Ecological Risk Assessment for
French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
May 2002
Prepared by:
U.S. Environmental Protection Agency
Region 8
999 18th Street, Suite 500
Denver, Colorado 80202
With Technical Assistance From:
Syracuse Research Corporation
Environmental Science Center
999 18th Street, Suite 1975
Denver, Colorado 80202
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
TABLE OF CONTENTS
1.0 INTRODUCTION 1 - 1
1.1 Purpose 1-1
1.2 Approach 1-1
1.3 Organization 1-2
2.0 SITE CHARACTERIZATION 2J.
2.1 Site Location 2-1
2.2 Site Description 2-1
2.3 Site Environmental Setting 2-2
2.3.1 Topography 2-2
2.3.2 Geology and Hydrogeology 2-3
2.3.3 Ecological Setting 2-5
2.3.3.1 Aquatic Setting 2-5
2.3.3.2 Terrestrial Wildlife and Habitat 2-7
2.3.3.3 Rare, Endangered and Threatened Species 2-9
2.4 Site History 2-11
2.4.1 Sampling Activities and Investigations 2-11
2.4.2 Regulatory Actions 2-14
3.0 DATA SUMMARY AND EVALUATION 3-1
3.1 Data on Source Media 3-1
3.1.1 Tailings, Waste Pile, and Roaster Fine Areas 3-1
3.1.2 Wellington-Oro Mine Pool 3-1
3.1.3 Acid Mine Discharges 3-2
3.2 Surface Water Data 3-2
3.2.1 Breckenridge Sanitation District 3-2
3.2.2 CDPHE and EPA French Gulch Non-Point Source Program 3-2
3.2.3 Northwest Colorado Council of Governments (NWCCOG) 3-3
3.2.4 USGS NAWQA Program Data 3-3
3.2.5 AdrianBrown Consultants 3-3
3.3 Sediment Data 3-4
3.3.1 Deacon and Driver (1999) 3-4
3.3.2 AdrianBrown (1999b) 3-4
3.4 Biological Tissue Data 3-4
3.5 Soil Data 3-5
3.6 Data Organization and Evaluation 3-5
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
4.0 PROBLEM FORMULATION 4J,
4.1 Site Conceptual Model 4-1
4.1.1 Sources 4-2
4.1.2 Release Mechanism 4-2
4.1.3 Exposure Media and Exposed Receptors 4-3
4.1.3.1 Surface Water 4-3
4.1.3.2 Sediment 4-3
4.1.3.3 Aquatic Prey (Food Chain) 4-4
4.1.3.4 Surface Soil 4-4
4.1.3.5 Terrestrial Prey Items (Food Chain) 4-5
4.1.3.6 Groundwater Seeps/Discharges 4-5
4.1.3.7 Summary of Exposure Pathways Selected for Quantitative
Evaluation 4-5
4.2 Selection of Chemicals of Potential Concern 4-6
4.3 Identification of Goals and Endpoints 4-7
4.3.1 Ecological Management Goals 4-7
4.3.2 Identification of Assessment and Measurement Endpoints 4-8
5.0 ECOLOGICAL EXPOSURE ASSESSMENT 5J.
5.1 Exposure of Aquatic Receptors 5-1
5.1.1 Direct Contact with Surface Water 5-1
5.1.2 Direct Contact with Sediment 5-1
5.1.3 Fish Tissue Burdens 5-2
5.2 Exposure of Terrestrial Wildlife 5-2
5.2.1 Identification of Representative Wildlife Species 5-2
5.2.2 Method for Estimating Dose 5-3
5.2.3 Ingested Dose from Surface Water 5-4
5.2.3 Ingested Dose from Sediments 5-5
5.2.4 Ingested Dose from Aquatic Prey 5-5
6.0 ECOLOGICAL EFFECTS ASSESSMENT 6J,
6.1 Aquatic Receptors 6-1
6.1.1 Toxicity Benchmarks for Surface Water 6-1
6.1.2 Toxicity Benchmarks for Sediment 6-2
6.1.3 Toxicity Benchmarks for Fish Tissue 6-4
6.2 Wildlife Toxicity Reference Values (TRVs) 6-5
7.0 RISK CHARACTERIZATION 7J,
7.1 Results of the SERA and Identification of Goals for ERA 7-1
7.2 Risk Characterization for Aquatic Receptors 7-2
7.2.1 Risks from Surface Water 7-2
7.2.1.1 Hazard Quotients Based on AWQC Values 7-3
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
7.2.1.2 Comparison of Species/Genus Mean TRVs to Surface Water
Concentrations 7-5
7.2.1.3 Surface Water Toxicity Testing 7-6
7.2.1.4 Benthic Macroinvertebrate Communities 7-9
7.2.1.5 Fish Communities 7-14
7.2.1.6 Aquatic Habitat Analysis 7-15
7.2.1.7 Weight of Evidence Evaluation for Surface Water 7-17
7.2.2 Risks from Sediment 7-18
7.2.2.1 Hazard Quotients 7-18
7.2.2.2 Mean Probable Effect Concentration Ratio 7-19
7.2.2.3 Weight of Evidence Evaluation for Sediment 7-20
7.2.3 Risks Based on Fish Tissue Burdens 7-21
7.3 Risks to Wildlife 7-21
7.4 Summary of Findings 7-23
8.0 UNCERTAINTIES 8J.
8.1 Uncertainties in the Aquatic Risk Evaluation 8-1
8.1.1 Uncertainty Due to Exposure Pathways Omitted 8-1
8.1.2 Uncertainty in Surface Water and Sediment Concentrations 8-1
8.1.3 Uncertainty in Aquatic TRVs 8-2
8.1.4 Overall Uncertainty in Aquatic Risk Assessment 8-3
8.2 Uncertainties in the Terrestrial Risk Evaluation 8-3
8.2.1 Uncertainty in Indicator Species 8-3
8.2.2 Uncertainty Due to Exposure Pathways Omitted 8-3
8.2.3 Selection of Chemicals of Potential Concern (COPCs) 8-3
8.2.4 Uncertainty in Wildlife Exposure Factors and Dose Levels 8-4
8.2.5 Uncertainty in Wildlife Toxicity Benchmarks 8-4
8.2.6 Overall Uncertainty in Terrestrial Risk Assessment 8-5
8.3 Uncertainties in Habitat Assessment 8-5
9.0 REFERENCES 9-1
in
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
LIST OF FIGURES
Figure 1-1 Location of the French Gulch/Wellington-Oro Mine Site
Figure 1-2 The Eight-Step Ecological Risk Assessment Process Recommended
Ecological Risk Assessment
Figure 2-1 Sampling Location Map
Figure 2-2 Abandoned Mine Site
Figure 2-3 Floating Dredge Remains and Removed Material
Figure 2-4 Current Topography of French Gulch and the Blue River
Figure 2-5 French Gulch
Figure 2-6 The Blue River
Figure 2-7 Benthic Macroinvertebrate Sampling Locations (Clements, 1995)
Figure 3-1 Sediment Sampling Locations
Figure 4-1 Ecological Site Conceptual Model
Figure 4-2 COPC Selection Procedure
Figure 6-1 Relationship Between the Mean PEC Quotient and the Incidence of
Toxicity in Freshwater Sediments
Figure 7-la HQs for Aquatic Receptors for Mean Dissolved Aluminum
Figure 7-lb HQs for Aquatic Receptors for Mean Dissolved Cadmium
Figure 7-lc HQs for Aquatic Receptors for Mean Dissolved Copper
Figure 7-Id HQs for Aquatic Receptors for Mean Dissolved Iron
Figure 7-le HQs for Aquatic Receptors for Mean Dissolved Lead
Figure 7-lf HQs for Aquatic Receptors for Mean Dissolved Nickel
Figure 7-lg HQs for Aquatic Receptors for Mean Dissolved Silver
Figure 7-lh HQs for Aquatic Receptors for Mean Dissolved Zinc
Figure 7-2a Comparison of Cadmium Concentrations with Acute and Chronic Toxicity
Values for Fish and Benthic Invertebrates
Figure 7-2b Comparison of Zinc Concentrations with Acute and Chronic Toxicity
Values for Fish and Benthic Invertebrates
Figure 7-3 a Relative Abundance of Dominant Taxa
Figure 7-3 a Composition of Benthic Invertebrate Community
Figure 7-4 Sediment Hazard Quotients for Benthic Invertebrates
Figure 7-5 HQ Values Based on COPC Levels in Fish Tissues
Figure 7-6 Summary of Wildlife Hazard Quotients
IV
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
LIST OF TABLES
Table 2-1 Timeline of Mining Activities in the French Gulch Area
Table 2-2 Benthic Invertebrate Species Identified from French Gulch and the Blue River
Table 2-3 Fish Species Identified from French Gulch and the Blue River
Table 2-4 Birds Found in Summit County, Colorado
Table 2-5 Mammals Found in Summit County, Colorado
Table 2-6 Timeline of Sampling Activities in the French Gulch Area
Table 3-1 Historic and Current Sampling Stations and Descriptions
Table 4-1 Summary of Surface Water COPCs
Table 4-2 Summary of Sediment COPCs
Table 5-la Summary Statistics for Surface Water for Aluminum
Table 5-lb Summary Statistics for Surface Water for Cadmium
Table 5-lc Summary Statistics for Surface Water for Copper
Table 5-ld Summary Statistics for Surface Water for Iron
Table 5-le Summary Statistics for Surface Water for Lead
Table 5-lf Summary Statistics for Surface Water for Mercury
Table 5-lg Summary Statistics for Surface Water for Nickel
Table 5-lh Summary Statistics for Surface Water for Silver
Table 5-li Summary Statistics for Surface Water for Zinc
Table 5-2 Summary of Sediment Data
Table 5-3 Summary of Fish Tissue Data
Table 5-4 Surface Water Exposures for Wildlife
Table 5-5 Sediment Exposures for Wildlife
Table 5-6 Fish Tissue Exposures for Wildlife
Table 6-1 Ambient Water Quality Criteria (AWQC) for Aquatic Receptors
Table 6-2 Reliability of Individual Consensus-Based Sediment Quality Guidelines
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
LIST OF APPENDICES
Appendix A Electronic Database - electronic files available on request
Appendix B Evaluation of Surface Water Data for Outliers
Appendix C Selection of Chemicals of Potential Concern
Appendix D Wildlife Exposure Parameters
Appendix E Derivation of Tissue-based TRVs for Fish
Appendix F Derivation of Oral TRVs for Wildlife
Appendix G Detailed Calculations of HQ Values
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
LIST OF ACRONYMS & ABBREVIATIONS
AD Adult
AGS American Geological Services, Inc.
AUF Area Use Factor
AWQC Ambient Water Quality Criteria
BCC Bioaccumulative chemical of concern
BR Blue River
BSD Breckenridge Sanitation District
BW Body Weight
CBMA Country Boy Mine Adit
CDMG Colorado Division of Minerals and Geology
CDOW Colorado Division of Wildlife
CDPHE Colorado Department of Public Health and the Environment
CERCLA Comprehensive Environmental Response, Compensation, and Liability
Act
CERCLIS Comprehensive Environmental Response, Compensation, and Liability
Information System
CF Conversion Factor
COC Chemical of Concern
COPC Chemical of Potential Concern
DQO Data Quality Objective
DW Dry Weight
EMB Embryo
EPT Ephemeroptera, Plecoptera and Tricoptera
ERA Ecological Risk Assessment
ERAGS Ecological Risk Assessment Guidance for Superfund
ERL Effects Range Low
ERM Effects Range Median
EPC Exposure Point Concentration
FC French Creek
FG French Gulch
FROG French Gulch Remediation Opportunities Group
GIS Geographic Information System
GLWQG Great Lakes Water Quality Guidance
HI Hazard Index
HQ Hazard Quotient
IR Ingestion Rate
JV Juvenile
KDS Kenny Dog Springs
LOAEL Lowest-Observed-Adverse-Effect-Level
MGB Magnum Brown Drive
NAWQA National Water Quality Assessment
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
NEC No Effect Concentration
NWCCOG Northwest Colorado Council of Governments
NDIS Natural Diversity Information Source
NOAA National Oceanic and Atmospheric Administration
NOAEL No-Observed-Adverse-Effect-Level
NFS Non-point Source
PEC Probable Effect Concentration
PEL Probable Effects Level
QAPP Quality Assurance Project Plan
QA/QC Quality Assurance/Quality Control
RAS Radon Abatement Services Inc.
RBP Rapid Bioassessment Protocol
RLCVT Reliance Drive Culvert
SAP Sampling and Analysis Plan
SCM Site Conceptual Model
SCoP System for Conservation Planning
SEC Sediment Effects Concentration
SERA Screening Ecological Risk Assessment
SET Severe Effects Threshold
SQG Sediment Quality Guidelines
SRC Syracuse Research Corporation
START Superfund Technical Assessment and Response Team
TEC Threshold Effect Concentration
TEL Threshold Effects Level
TRV Toxicity Reference Value
TVS Table Value Standards
UF Uncertainty Factor
URS URS Operating Services, Inc.
UOS URS Operating Services, Inc.
USBOR United States Bureau of Reclamation
USEPA United States Environmental Protection Agency
USGS United States Geological Survey
W-O Wellington-Oro
WP Waste Pile
WQCC Water Quality Control Commission
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
1.0 INTRODUCTION
1.1 Purpose
This document is an ecological risk assessment for the French Gulch/Wellington-Oro Mine Site
(French Gulch) near Breckenridge, Colorado (Figure 1-1). Reasons for potential ecological
concern at the site include historic releases of solid waste materials from mining, milling and
smelting activities that occurred in the area, as well as on-going releases of contaminated
groundwater and surface water.
The purpose of an ecological risk assessment (ERA) is to describe the likelihood, nature, and
extent of adverse effects which environmental chemical contamination may be having on the
ecological receptors at the site. This information, along with other relevant information, is used
by risk managers to make decisions whether remedial actions are needed to protect the
environment. If remediation is warranted, an investigation is performed to evaluate the relative
merits of a range of alternatives remedial actions which might be undertaken to achieve risk
management goals at the site.
1.2 Approach
This ERA is completed in accordance with current United States Environmental Protection
Agency (USEPA) guidance for performing ecological risk assessments (USEPA 1992a, 1997,
1998a). The general sequence of steps used to carry out an ERA at a Superfund site is illustrated
in Figure 1-2 (USEPA, 1997). It is important to realize that the eight steps shown in Figure 1-2
are not intended to represent a linear sequence of mandatory tasks. Rather, some tasks may
proceed in parallel, some tasks may be performed in a phased or iterative fashion, and some
tasks may be judged to be unnecessary at certain sites.
At this site, the ecological risk assessment process was initiated by performing a screening-level
ecological risk assessment (SERA) in April of 2001 (SRC, 2001). Because a SERA normally
uses a number of simplifying assumptions and approaches and is intentionally conservative, the
SERA was not intended to support any final quantitative conclusions about the magnitude of the
potential ecological risks. Rather, the SERA provided preliminary information on the potential
for adverse effects to aquatic receptors (including benthic invertebrates and fish) exposed via
direct contact to chemicals of potential concern (COPCs) in surface water and sediments; to
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
terrestrial plants exposed via direct contact to soils; to terrestrial soil invertebrates exposed via
direct contact to soils; and to terrestrial wildlife receptors exposed via ingestion of surface water,
sediments, soils, fish, benthic invertebrates, terrestrial plants and soil invertebrates. The SERA
identified data needed for the completion of a more detailed evaluation and made
recommendations for the collection of these data.
Following completion of the SERA, the USEPA undertook further data collection efforts to
support a more detailed and thorough evaluation of ecological impacts at the site. These efforts
included collection of additional surface water, data, site-specific surface water toxicity testing
(Lockheed Martin, 2000), and an analysis of the aquatic habitat quality in French Gulch and the
Blue River.
The current report utilizes the new data along with the historical data to provide an updated and
refined ecological risk evaluation for the site.
1.3 Organization
In addition to this introduction, the ERA report is organized into the following main sections.
Section 2 - This section details the location, description, environmental setting, and
history of the French Gulch Site.
Section 3 - This section discusses the available data for the French Gulch Site including a
description of the nature and extent of heavy metal contamination present in surface
water, sediment, fish tissue and surface soil.
Section 4 - This section presents the ecological problem formulation, including the site
conceptual model, the chemicals of concern, and the presentation of assessment and
measurement endpoints.
Section 5 - This section presents the ecological exposure assessment for all aquatic and
terrestrial receptors of concern.
Section 6 - This section presents the ecological effects assessment, including descriptions
of toxicity benchmarks for aquatic receptors (benthic invertebrates, fish), terrestrial
1 -2
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
receptors (plants, soil invertebrates), and amphibians, as well as wildlife toxicity
reference values (TRVs).
Section 7 - This section presents the ecological risk characterization for all aquatic and
terrestrial receptors of concern.
Section 8 - This section presents the uncertainties associated with the ERA and the
potential impact of these uncertainties on risk estimates.
Section 9 - This section provides citations for all data, methods, studies, and reports
utilized in the BRA.
1 -
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
2.0 SITE CHARACTERIZATION
2.1 Site Location
The French Gulch/Wellington-Oro Site (French Gulch Site) is located in Summit County,
Colorado, approximately 80 miles west of Denver, near the town of Breckenridge (Figure 1-1).
2.2 Site Description
French Gulch is an east-west trending valley located on the western slope of the continental
divide. Surface water drainage through the French Gulch valley flows from east to west,
discharging to the Blue River. The Blue River then flows north (except for a segment where it
disappears one mile downstream of the confluence with French Gulch) for 10 miles, discharging
to the Dillon Reservoir near the town of Frisco. A schematic map of the site layout is provided
in Figure 2-1.
Mining History
The French Gulch valley includes several abandoned mine and mill sites (Figure 2-1, Figure 2-
2). A timeline of specific mining activities within the French Gulch valley is provided in Table
2-1.
The Wellington-Oro (W-O) mining complex was the largest lode mining operation in French
Gulch. Originally operating separately, the Oro mine was combined with the Wellington mine in
1907. The majority of mining activities occurred from the 1880's until the 1930's, with some
mining continuing until the 1970's. During this time, lead, zinc, copper, silver, and gold ores
were removed from over 12 miles of tunnels, adits, drifts, slopes, and crosscuts (AGS, 1999). In
1908, a 100-ton gravity mill was built at the W-O mine complex to concentrate lead, zinc, and
pyrite. The gravity mill was in operation until 1929. A 50-ton roaster and magnetic separation
plant was constructed in 1912 to remove iron and sulfur from the zinc ores (AGS, 1999). In
1927, the roaster and magnetic separation plant was replaced by a more economical flotation
mill.
Beginning in the late 1850's, the French Gulch valley floor and the Blue River were extensively
mined using placer mining techniques, including the operation of floating placer dredges.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Dredging operations ceased in the 1940's (AGS, 1999). Placer mining activities completely
altered the topography of the valley floor and rerouted the flows of French Gulch and the Blue
River. The dredge boats removed the alluvial valley material, leaving behind 40 to 50 foot piles
of boulders, cobbles, and gravel (Figure 2-3). Currently, the resulting dredged material covers
the French Gulch valley floor for approximately 3.5 miles from the confluence of French Gulch
with the Blue River (Richard, 1997). In addition, much of the Blue River bottom is covered with
the dredged material (Figure 2-4).
Current Impacts of Mine Waste on the Environment
Currently, French Gulch and the Blue River receive metal loadings from the mine and mill sites
from both surface and groundwater sources. Surface sources consist of mill tailings, roaster
fines, and mine waste rock (Morrissey, 1995). Groundwater contamination is associated with
drainage from flooded underground mine workings and seepage of leachate from surface tailings
and mine waste piles. A hydrogeological investigation completed in 1994 by the Colorado
Division of Minerals and Geology (CDMG) and USEPA (Morrissey, 1995) concluded that
significant metals loading into French Gulch occurs from the shale bedrock and that metals are
transported via groundwater pathways to French Gulch. Conflicting information exists regarding
the relative contribution of surface leaching of metals from the mine waste rock, roaster fines,
and mill tailings. Using radioisotope techniques, Radon Abatement Systems, Inc. (RAS) (1996)
considered the increase of metals in French Gulch from surface wastes to be minimal. However,
AdrianBrown (1997) calculated that approximately 30 percent of the total zinc in French Gulch
originated from surface waste associated with the Wellington-Oro mining complex.
2.3 Site Environmental Setting
2.3.1 Topography
French Gulch is the primary drainage in the French Gulch system, originating near Mount
Guyot, which is located west of the Continental Divide. French Gulch flows west to its
confluence with the Blue River, near Breckenridge (Figure 2-5). The Blue River originates in
the watershed near Hoosier Pass and meanders adjacent to State Highway 9 through
Breckenridge and eventually empties into the Dillon Reservoir (Figure 2-6).
Because of concerns over impacts of mine waste on French Gulch, the flow of French Gulch was
modified in 1993 by the CDMG. This project diverted the upgradient, relatively clean main
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
branch of French Gulch southward around site areas of dredged material, forming the South
Branch of French Gulch. The purpose of the diversion was to segregate clean stream water prior
to flowing across contaminated areas, lessening the amount of metals being carried away in the
water (AdrianBrown, 1999b). The original stream course, for which a limited flow remains and
continues through the mining site area, is now referred to as the North Branch of French Gulch.
The divided northern and southern branches of French Gulch re-join at Dead Elk Pond (Figure
2-1). Sampling station FG-8 is located on the South Branch at the inlet into Dead Elk Pond,
while FG-7 is located on the North Branch at the inlet into Dead Elk Pond. The FG-9A and
FG-9 sampling locations are located downstream of Dead Elk Pond and represent the
combination of the two branches of French Gulch (AdrianBrown, 1999b).
The South Branch receives minimal drainage from the W-O mine site while the North Branch
receives the majority of mine water drainage. For most of the year, the majority of surface water
flow in French Gulch travels below the W-O mine site through the South Branch. During peak
high flow conditions, the North Branch of French Gulch may be breached with the flow reaching
the South Branch. The water sources for the North Branch are believed to occur via alluvial
groundwater discharge and subsurface flow in the placer tailings that originate from losing
stream reaches.
2.3.2 Geology and Hydrogeology
Lovering (1934) described the geology of the Breckenridge Mining District, including the
geology in the W-O mine area. Sedimentary cretaceous bedrock in the W-O mining complex are
represented by the Pierre Shale (dark shale), Neobrara Formation (black shale and limestone),
Benton Shale (black shale), and Dakota Quarzite (quartzite and black shale). The Morrison
formation that consists of sandstone and red, gray and black shale represent Jurassic bedrock.
Carboniferous formations include the Maroon formation, which is comprised of shale and
conglomerate, and possibly the Weber formation (Pennsylvanian), which may be present in some
areas. Tertiary igneous formations include quartz monzonite porphyry, intermediate quartz
monzonite porphyry, and monzonite porphyry. Granite, gneiss, and schist represent
Pre-Cambrian metamorphic formations in the W-O mine area. The mineralized veins and
metamorphic replacement deposits related to the contact-metamorphosed Jurassic and
Cretaceous sediments and the Tertiary monzonite porphyry bodies are associated with historical
lode mining operations in the W-O area (AdrianBrown, 1999a; AGS, 1999). Quaternary glacial
material consisting of alluvium and colluvium cover the valley floor to a depth of up to 50 feet
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
deep. Alluvial material in French Gulch ranges in width from approximately 1000 feet to over
0.25 miles; however, a significant amount of the alluvial material has been disturbed by placer
dredging activities.
Several north to northeast trending faults cut through the sedimentary and igneous intrusions in
the W-O mine area. Sedimentary strata are faulted and folded into a large graben
(down-dropped fault block) and syncline structural feature, which is the Oro Fault Block. The
Wellington Fault Block is located to the east of the Great Northern and " J" Faults. The Oro Fault
Block is bounded by the Bullhide Fault on the west and the Great Northern Fault and " J" Faults
on the east (AdrianBrown, 1999a). The 11-10 Fault is a splay from the Bullhide Fault (AGS,
1999). The Oro and #3 Mine shafts and their associated workings were developed within the
graben and syncline features. The Wellington Mine was developed within both the downthrown
Oro Fault block and the upthrown Wellington Fault block (AGS, 1999). Ore veins are often
associated with fault zones and mine slopes sometimes followed the faults (AdrianBrown,
1999a; AGS, 1999).
Vertical displacement on the Bullhide Fault is 880 feet and the dip-slip movement of
approximately 900 feet (Lovering, 1934). Similar displacement is observed for the Great
Northern and "J" Faults. In addition, there is also evidence of horizontal movement in the
Bullhide, "J", and Great Northern Faults. The 11-10 Fault has a net slip of 110 feet, a vertical
displacement of up to 50 feet, and a significant strike slip component of approximately 45-50
feet (AGS, 1999).
At the western limit of the mine, the water level in the mine is above the level of French Gulch.
As a result, water discharges from the mine to the valley. Discharge to French Gulch from the
mine occurs mainly in a diffuse manner. Some discharge occurs through faults and fractures that
discharge to the alluvium. Some of the mine-pool discharge flows down French Gulch as
shallow alluvial groundwater flow. At sampling station FG-6C (Figure 2-1), mine water
discharges from the mine in the form of a series of springs approximately 200 feet down-gradient
of the Oro shaft. This series of springs discharge mine-pool water all year round. Other
intermittent springs are located in the piles of dredge tailings that line the valley floor.
AdrianBrown (1999c) completed an average annual mine pool water balance flow that
concluded the following:
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
• The mine pool receives inputs of water from infiltration of snowmelt and rain (79
gallons per minute, gpm), infiltration of upstream flow (51 gpm) and inflow from
regional groundwater (less than 1 gpm).
The mine pool discharges to French Gulch at an approximate rate of 145 gpm and
to regional groundwater at less than 1 gpm.
• Flow from the mine pool into French Gulch is occurs both by surface water (127
gpm) and by groundwater recharge (18 gpm).
The estimated average dissolved zinc load at sampling station FG-9 near Dead Elk Pond is
estimated at 152 pounds per day. The estimated average dissolved zinc load directly down
gradient of the mine is about 270 pounds per day, indicating that about 44% of the dissolved zinc
load that enters French Gulch is attenuated between the mine and station FG-9 (AdrianBrown,
1999b).
2.3.3 Ecological Setting
French Gulch, the Blue River, and associated riparian and upland areas provide possible habitat
for fish, aquatic invertebrates, terrestrial plants, terrestrial soil invertebrates, mammals, birds,
reptiles and amphibians. Specific species that may reside within the French Gulch Site are
identified in the following subsections based on historical data and reported ranges within the
state of Colorado. These specific species are referred to as potential ecological receptors of
concern as they may be exposed to mine related metals contamination in surface water,
sediment, soil and the aquatic and terrestrial food chain.
2.3.3.1 Aquatic Setting
Absent impacts from mining operations and other anthropogenic influences and stressors,
mountain streams and rivers in Colorado generally provide good habitat for a variety of trout and
other coldwater fish and benthic invertebrates. Studies on the identity and abundance of fish and
benthic macroinvertebrates species in and around French Gulch and the Blue River are
summarized below.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Benthic Invertebrates
Currently, there are three available studies of benthic macroinvertebrate communities in the
French Gulch Site area. These three studies are described below, and the species of invertebrates
identified at each sampling station are summarized in Table 2-2.
Clements (1995). In May and October of 1995, the benthic invertebrate community was
sampled at three stations in the French Gulch site area, including two stations in French Gulch
and one station in the Blue River (see Figure 2-7). Station FC-1 is a reference station for French
Gulch, station FC-2 is located downstream of tailings, and Station BR-4 is located in the Blue
River, downstream of its confluence with French Gulch (Figure 2-7). Benthic invertebrates were
quantitatively sampled using a Hess sampler (three replicates per site) from shallow (less than
0.5 m) riffle areas at each station. The study also measured the dissolved and total
concentrations of zinc in surface water samples, the acute (48 hour) toxicity of surface water
samples to the cladoceran Ceriodaphnia dubia, and water quality parameters (conductivity, pH,
hardness, alkalinity).
USGS (1996). In August 1996, benthic macroinvertebrate samples were collected as part of the
USGS Upper Colorado River Basin National Water Quality Assessment (NAWQA) (USGS,
1996). Samples were collected at two sampling stations, one located in French Gulch just
upstream of the confluence with the Blue River, and the other located in the Blue River
approximately Vi mile downstream of the confluence with French Gulch (Figure 2-7).
CDOW (2001). Aquatic macroinvertebrates were collected at 3 locations in French Gulch
(FG-1, FG-8 and FG-9) and at 4 locations in the Blue River (BR-1, BR-2, BR-3, and BR-5) in
conjunction with the aquatic habitat analysis conducted by CDOW in May 2000 (Figure 2-1).
Three USEPA Rapid Bioassessment Protocol (RBP) metrics were selected for invertebrate
evaluation in the habitat analysis: the number of Ephemeroptera, Plecoptera and Tricoptera
(EPT) taxa present, the percent Ephemeroptera taxa compared to the total number of organisms
collected, and the number of mayfly taxa present. The aquatic habitat analyses is discussed
further as part of Section 7.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Fish
Several studies are available that contain information on the fish species found in French Gulch
and the Blue River. These studies are described below, and the fish species identified during
each study are listed in Table 2-3.
CDPHE & USEPA (1989V In September of 1989, the CDPHE and the USEPA sampled fish
from seven locations (FGO, FG1, FG2, FG4, FG6A, FG8 and FG9) in French Gulch and three
sampling locations (BR1, BR2, and BR3) in the Blue River (CDPHE & USEPA, 1989). These
stations are shown in Figure 2-1. One protected fish species - the Colorado River cutthroat trout
(Oncorhynchus clarki pleuriticus) - was identified in the headwaters of French Gulch.
Deacon & Mize (1997). In 1996, the USGS sampled fish communities throughout the Upper
Colorado River Basin, as part of the NAWQA program (Deacon and Mize, 1997). One sampling
station on the Blue River (near BR-1) and one sampling station on French Gulch (near FG-9)
were included in this study. Two brown and 36 brook trout were observed on the Blue River
near BR-1. No fish were observed in French Gulch near FG-9.
USGS & USEPA (1997V In 1997, the USGS and USEPA collected trout from two sampling
stations (BR-1 and BR-2) on the Blue River for tissue analysis (USGS & USEPA, 1997). Both
brook and brown trout were collected from BR-2, however, only brown trout were collected
from BR-1.
CDOW (2001V As a part of the aquatic habitat analysis conducted by CDOW in May of 2000,
fish were collected from two reaches in French Gulch and two reaches in the Blue River (Figure
2-1). This evaluation confirmed that Colorado River cutthroat trout inhabited the upper
headwaters of French Gulch and that no fish are present in the lower French Gulch reaches prior
to its confluence with the Blue River.
2.3.3.2 Terrestrial Wildlife and Habitat
Information on terrestrial wildlife and habitats in the vicinity of the site is available from several
sources, including Andrews and Righter (1992), Fitzgerald et al. (1994), Natural Diversity
Information Source (NDIS) (1999), Colorado Department of Wildlife (CDOW) (1999), and the
National Audubon Society (2000).
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Vegetative Cover
The NDIS System for Conservation Planning provides a Geographic Information System (GIS)
database of the vegetation structure with a 30-m by 30-m resolution for Summit County,
Colorado (NDIS, 1999). The vegetation types in French Gulch consist of grass-forb and
willow-dominated (Salix spp.) communities with stands of conifer and conifer/aspen vegetation
types on the adjacent slopes. Conifers in the area include lodgepole pine (Pinus contorta),
Engelmann spruce (Picea engelmannii), blue spruce (Piceapungens), sub-alpine fir (Abies
lasiocarpd) and Douglas fir (Pseudotsuga menziesif). The grass, forb, and willow-dominated
communities are intermixed with barren piles of the dredged river rock, which dominate the
majority of the valley floor.
Amphibians and Reptiles
Potential habitat for the boreal toad (Bufo boreas boreas) can be found intermittently along
certain sections of the Blue River. Boreal toads are found in wetlands, streams, and shallow
ponds and lakes at elevations between 7,000 and 12,900 feet (NDIS, 1999). A reproducing
population of boreal toads is located in Cucumber Gulch, which drains into the Blue River from
the west, just downstream of the confluence of the Blue River and French Gulch. The boreal
toad population in Cucumber Gulch is one of four known populations in Colorado. NDIS (1999)
also identifies the Northern leopard frog (Ranapipiens) as a potential resident within the French
Gulch Site. The leopard frog is a State Species of Special Concern (CDOW, 1999). The only
other amphibians and reptiles known to occur in Summit County are the tiger salamander
(Ambystoma tigrinum), chorus frog (Pseudacris triseriata), and the western terrestrial garter
snake (Thamnophis elegans).
Birds
In areas that are not heavily disturbed by mining, the riparian zones along French Gulch and the
Blue River are characterized by a willow scrub habitat that provides potential habitat for many
songbirds. In addition, this riparian habitat provides an important source of prey for raptors in
the area. Piscivorus birds such as the osprey (Pandion haliaetus) or the bald eagle (Haliaeetus
leucocephalus) could potentially ingest fish from French Gulch and the Blue River. Table 2-4
provides a list of the bird species that have been observed in Summit County and that could
potentially use the French Gulch Site area.
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Mammals
Elk (Cervus elaphus) are known to concentrate in the French Gulch and Blue River areas in the
summer (NDIS, 1999). Mule deer (Odocoileus hemionus\ bighorn sheep (Ovis canadensis\
mountain lion (Felis concolor) and black bear (Ursus americanus) are other large mammals
found in the area. The corridor along Highway 9 from Breckenridge to Frisco has been
designated a potential human/bear conflict area. Other medium and small mammals in the area
include Lepus, Sylvilagus, Spermophilus, and Tamias species and Microtine rodents. The
abundance of mines and tunnels in the French Gulch area provide excellent habitat for
Townsend's big-eared bat (Plecotus towmendiipallescens). Townsend's big-eared bat could
potentially roost in the abandoned mining areas and feed on insects that concentrate around
water bodies such as Dead Elk Pond or slow moving pools of water. Table 2-5 provides a list of
the mammals in Summit County that could potentially inhabit the French Gulch area.
2.3.3.3 Rare, Endangered and Threatened Species
Information on protected avian and mammalian species potentially inhabiting the French Gulch
area and Summit County, Colorado were obtained from Fitzgerald et al. (1994) and Andrews and
Righter (1992). Information on the listing of these wildlife species as endangered, threatened, or
imperiled was obtained from the NDIS (1999), CDOW (1999), and the National Audubon
Society (2000). The NDIS website lists species that are considered as candidate, sensitive,
unique or rare by the Colorado Natural Heritage Program for Summit County. This website also
lists species that the CDOW consider to be declining in Colorado. The CDOW website lists
species, which are considered threatened and endangered in Colorado at a State and Federal
level. In addition, the National Audubon Society provides a "Watchlist" of breeding bird species
for each state. These Watchlists identify bird species that are experiencing declines in
population size, breeding and wintering habitat, and/or a decline in breeding and wintering
ranges.
The CDOW (1999) lists the whooping crane (Grus americana), lynx (Lynx lynx), the northern
river otter (Lutra canadensis\ and the boreal toad (Bufo boreas boreas) as Federally and/or State
endangered species that maybe in the county area. The whooping crane, considered a rare
migrant to Summit County, is known from only one record. A whooping crane was observed on
October 8, 1989, on Dillon Reservoir. A population of northern river otters has been
reintroduced into Summit County; however, the otters require a relatively high water quality and
a food base of abundant fish and crustaceans (Fitzgerald et al., 1994). Lynx have been
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
reintroduced to several areas in Colorado, but no sightings of lynx have been reported in the
French Gulch area.
Federal and State threatened species include the bald eagle (Haliaeetus leucocephalus), spotted
owl (Strix occidentalis), and the greenback cutthroat trout (Oncorhynchus clarki stomias). A
native population of Colorado River greenback cutthroat trout {Oncorhynchus clarkipleuriticus)
is a species of special concern, as identified by CDOW, and is known to populate French Gulch
upstream of the W-O mine complex and have been captured at sampling stations FG-0, FG-1,
and FG-2 (CDPHE and USEPA, 1989). State Species of Special Concern include Barrow's
goldeneye (Bucephala islandica), the peregrine falcon (Falcoperegrinns), and the sage grouse
(Centrocercus urophasianus). Other State listed Species of Concern include the northern
leopard frog (Ranapipiens) and the bluehead sucker (Catostomus discobolus). In addition to
many of the species listed above, the CDOW has identified other species of interest that are
exhibiting declines in population size and/or distribution (NDIS, 1999). These declining species
include the flammulated owl (Otus flammeolus\ horned lark (Eremophila alpestris\ lark bunting
(Calamospiza melanocorys), rufous hummingbird (Selasphorous rufus\ Swainson's hawk (Buteo
swainsoni), and the three-toed woodpecker (Picoides tridactylus).
Avian species known to occur in Summit County and considered to be imperiled by the Colorado
Natural Heritage Program include the American redstart (Setophaga ruticilla), bald eagle,
Barrow's goldeneye, black-crowned night-heron (Nycticorax nycticorax), boreal owl (Aegolius
funereus\ eared grebe (Podiceps nigricollis), great blue heron (Ardea herodias\ merlin (Falco
columbarius), northern goshawk (Accipiter gentilis), northern harrier (Circus cyaneus\ osprey
(Pandion haliaetus\ peregrine falcon, red-headed woodpecker (Melanerpes erythrocephalus),
ring-billed gull (Larus delawarensis), spotted owl, whooping crane, and willet (Catoptrophorus
semipalmatus). Imperiled mammalian species in Summit County include the bushy-tailed
woodrat (Neotoma cinerea rupicola), dwarf shrew (Sorex nanus), golden-mantled ground
squirrel (Spermophilus lateralis), least chipmunk (Tamias minimus), lynx, meadow vole
(Microtuspennsylvanicus), northern pocket gopher (Thomomys talpoides), pygmy shrew (Sorex
hoyi), and Townsend's big-eared bat (Plecotus townsendii pallescens). In addition to the
CDOW's declining species such as the flammulated owl, lark bunting, sage grouse, and
Swainson's hawk, the National Audubon Society includes Franklin's gull (Laruspipixscan) and
the prairie falcon (Falco mexicanus) on its Watchlist for Colorado.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
2.4 Site History
2.4.1 Sampling Activities and Investigations
The first studies of chemical concentrations in the French Gulch area were conducted by Moran
and Wentz in 1972 (Moran and Wentz, 1974). Moran and Wentz (1974) collected surface water
from several streams across the state of Colorado potentially impacted by mining operations in
Colorado. Two of the sampling stations in this study were located on French Gulch. The first
French Gulch sampling station was located upstream of tailings and the second was located just
downstream of Dead Elk Pond. Three sampling stations were located on the Blue River. The
first was located upstream of confluence with French Gulch near BR-Adams. The second was
located just downstream of the confluence near BR-2 and the third downstream of the confluence
of the Blue River near BR-4. Elevated concentrations of lead, zinc, manganese, and iron were
observed in the lower reaches (below the W-O mine complex) of French Gulch compared to the
upper reach sample. Elevated metal concentrations were also observed in the Blue River below
its confluence with French Gulch.
McConnell observed similar elevated concentrations in 1979 (AGS, 1999). However, full-scale
investigations into the metal contamination of French Gulch and the Blue River were not
initiated until the late 1980's after observed fish kills of newly stocked fingerlings in the Blue
River. The subsequent investigations were completed by multiple parties examining the source
and fate of the metals contamination.
A chronology of sampling activities and programs in the French Gulch area is provided in Table
2-6. The more recent studies that are most relevant to the baseline ERA are summarized in the
following subsections. Figure 2-1 depicts the current and historic sampling locations in French
Gulch and the Blue River.
French Gulch NFS Project
The French Gulch Non-Point Source (NFS) Project was initiated in 1990 by the State of
Colorado to address non-point source discharges from the W-O mine and mill site into French
Gulch. The project was jointly conducted by the Colorado Division of Minerals and Geology
(CDMG) and the USEPA Region VIII Water Management Division (Morrissey, 1995). NFS
programs are authorized by Section 319 of the Federal Clean Water Act. The USEPA
administers Section 319 NFS provisions by providing grants to state agencies. The CDPHE
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Water Quality Control Division is the responsible agency for administering Colorado's non-point
source program. CDMG was designated as the "operating agency" for the French Gulch NFS
Project (Morrissey, 1995). CDPHE and EPA collected surface water samples from several
locations on French Gulch (FG-0 to FG-9) and the Blue River (BR-1 to BR-3) on eight separate
occasions from May of 1989 to July of 1996.
Breckenridge Sanitation District (BSD)
From 1986 to 1994, the BSD collected surface water from three sampling stations on the Blue
River for the purpose of assessing the potential impacts of wastewater sludge land application
(BSD, 1997). The sampling stations included:
Near the Recreation Center bridge (located approximately 600 feet downstream of
the Blue River's confluence with French Gulch),
Near Cemetery Road (approximately 440 feet downstream of the Recreation
Center Bridge sampling station); and
• Near County Road 3 (5,460 feet downstream of the Cemetery Road sampling
station).
United States Bureau of Reclamation (USBOR)
In 1989, the USBOR identified several locations where acidic mine discharges flowed into
French Gulch (Stover, 1989). In 1991, the USBOR delineated the mill tailings and mine waste
areas around the W-O mine complex and identified mill tailings, roaster fines, and mine water as
potential sources of contaminated surface waters in French Gulch (Stover, 1991). In addition,
ground water monitoring wells were installed to evaluate the hydrology of the mine site. In
1992, the USEPA continued surface water sampling efforts in the area. Surface water samples
were collected intermittently in French Gulch and the Blue River until 1996.
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French Gulch Remediation Opportunities Group (FROG)
In the mid-1990's, the State of Colorado requested that the Northwest Colorado Council of
Governments (NWCCOG) establish a community group in the Breckenridge area to address the
problems in French Gulch. The NWCCOG formed the French Gulch Remediation Opportunities
Group (FROG) and invited individuals living in the area or with an interest in the area to attend
meetings to discuss the clean-up and remediation of French Gulch. Once the FROG became
organized, the Keystone Center replaced the NWCCOG as the facilitator.
The FROG Monitoring and Remediation subcommittee initiated a surface water sampling study
in 1997 to further characterize the extent of the contamination of the Blue River. The NWCCOG
agreed to collect the surface water samples that were analyzed by the CDOW River Watch
Program's Laboratory in Fort Collins, Colorado.
Five sampling stations were established by NWCCOG along the Blue River. These stations are
shown on Figure 2-1. Station 654 is located north of the town of Breckenridge to the south and
station 655 is located near the Park Avenue Bridge. These two stations are located on the Blue
River, above its confluence with French Gulch. Station 656 is located on the Blue River just
downstream of the confluence near the Recreation Center Bridge. Station 643 is located further
downstream near County Road 3, while Station 657 is located just before the Swan River
confluence.
Surface water was sampled roughly every two weeks from April to September and monthly from
October to December from April 24, 1997 to September 23, 1998. The CDOW lab analyzed the
samples for total and dissolved concentrations of cadmium, copper, iron, lead, manganese, and
zinc.
USGS National Ambient Water Quality Assessment
The USGS initiated the NAWQA program in 1991 to characterize the current conditions and
trends in the water quality of streams and rivers in the United States. The Blue River and French
Gulch were included in this study as part of the Upper Colorado River Basin Study Unit. The
USGS collected surface water samples from several stations along French Gulch and the Blue
River (Figure 2-1) during September 1992, October 1993, November 1993, June 1996, and July
1996.
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AdrianBrown Consultants
In September 1998, AdrianBrown initiated a surface water-sampling program scheduled to
collect monthly surface water samples from March to November each year. Currently, there are
10 sampling stations (FG-5, FG-5.5, FG-6C, PT-1, FG-7, FG-8, FG-9, BR-1, BR-2, BR-3) along
French Gulch and the Blue River (Figure 2-1) (AdrianBrown, 1999a). At the present time,
AdrianBrown continues to collect surface water data.
2.4.2 Regulatory Actions
During the mid 1980's, the City of Breckenridge reclaimed and improved the Blue River from
south of town to a few miles downstream of French Gulch. The reclamation involved dredging
and removing the old placer tailings, reconstructing the stream channel and revegetating the
stream banks (SAIC, 1994, as cited in AGS, 1999). Subsequent to the reclamation, the CDOW
initiated a stocking program to re-establish a trout population in the Blue River. As a result of
this stocking, the acutely toxic conditions associated with French Gulch were first observed
(AGS, 1999).
French Gulch Diversion Project
In May of 1993, the CDMG diverted the upgradient, relatively clean main branch of French
Gulch around the mill tailings south of French Gulch road forming the South Branch of French
Gulch (Figure 2-1). The original stream course, for which a limited flow remains and continues
through the mining site area, is now referred to as the North Branch of French Gulch. The
objective of this diversion project was to allow spring high flow to bypass the mill tailings
reducing ponding and the groundwater table in the south mill tailings area. The diversion
eliminated most of the ponding, but did not significantly lower the groundwater table. There
were no noticeable improvements in downgradient stream and groundwater quality as a result of
this project (AGS, 1999; SAIC, 1994).
Blue River Water Quality Classification
For the purposes of classifying water quality, the Blue River has been divided into two sections
from its headwaters to the Dillon Reservoir. Section 1 of the Blue River encompasses all of the
Blue River from its source to the Dillon Reservoir with the exception of Segment 2. Segment 2
of the Blue River begins at its confluence with French Gulch and extends to a point one mile
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
above its confluence with the Swan River. Segments 1 and 2 of the Blue River have been given
an Aquatic Life Cold Water I and a Recreation I classification (WQCC, 1999). The aquatic life
classification indicates that the waters are capable of supporting cold water biota or could
potentially support cold water biota if adverse water quality conditions were corrected. Water
quality criteria are calculated using Table Value Standards (TVS), which are water hardness
dependent equations used to calculate acute and chronic toxicity thresholds. However, Segment
2 has temporary modifications for cadmium and zinc concentrations. Instead of the TVSs for
cadmium and zinc that are used in the Aquatic Life Cold Water I designated streams, chronic
cadmium and zinc concentrations of 4 and 1,700 ug/L, respectively, have been temporarily
assigned to Segment 2 (WQCC, 1999). This temporary modification to the water quality
standards expired on December 31, 1998, but was extended to December 31, 2002.
French Gulch Water Quality Classification
French Gulch has also been divided into two segments, designated Blue River Segment 10 and
Blue River Segment 11. Segment 10 consists of all tributaries, wetlands, lakes, and reservoirs in
the headwaters section of French Gulch from its source to a point about 1.5 miles east of
Breckenridge. Segment 11 includes the mainstem of French Gulch from the point 1.5 miles east
of Breckenridge to its confluence with the Blue River. Segments 10 and 11 have been classified
as Aquatic Life Coldwater I waters (WQCC, 1999). Segment 10 has also been designated as a
Recreation I stream. Segment 11 has been designated as a Recreation II stream and qualifies for
a use-protection (UP) designation based on the present classification (WQCC, 1999). In
addition, chronic concentrations of cadmium, lead, and zinc have been temporarily modified for
Segment 11. Chronic concentrations of'7.7, 6, and 4000 ug/L have been temporarily assigned
for cadmium, lead, and zinc, respectively (WQCC, 1999). This temporary modification expires
on December 31,2002.
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3.0 DATA SUMMARY AND EVALUATION
Previous investigations of French Gulch and the Blue River described above (Section 2.4) were
reviewed for the availability of reliable and relevant analytical and biological data that could be
used in the baseline ERA. This section summarizes the data that were selected for use in the
baseline ERA. Sections 3.1 to 3.4 review the available data for waste sources, surface water,
sediment, and biological tissue, respectively.
3.1 Data on Source Media
3.1.1 Tailings, Waste Pile, and Roaster Fine Areas
Samples of tailings, waste piles and roaster fines were collected from the W-O Mining Complex
area by USBOR (1997). Samples were analyzed for a suite of 26 parameters including arsenic,
cadmium, copper, lead, and zinc. Much of this surface material was covered with clean soil in
the fall of 1998 (AGS, 1999). Therefore, these samples do not represent the present condition of
surface contamination in the W-O Mining complex area and were not evaluated in the baseline
ERA.
3.1.2 Wellington-Oro Mine Pool
A number of groundwater studies have been conducted in the W-O mine complex area. The
results of these studies indicate that the W-O Mine Pool is the primary source of metal
contamination in French Gulch and the Blue River. The slopes in the mine and the fractured
bedrock and faults provide the major pathways from the mine pool to French Gulch. In
particular, the 11-10 and Bullhide Faults and their associated fault block have been identified as
the primary conduits of metal discharge into French Gulch (RAS, 1996; RAS, 1997a; Kimball,
1997; Kimball et al., 1999). Snowmelt in the upper elevations of the French Gulch watershed
recharge the regional bedrock groundwater table, resulting in a corresponding rise in the W-O
Mine Pool. This, in turn, leads to an increase in the flow of metals into French Gulch via the
slopes and faults in the W-O mine complex area (RAS, 1996; RAS, 1997b; AGS, 1999).
However, because ecological receptors are not directly exposed to groundwater, these data are
not utilized in the risk assessment.
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3.1.3 Acid Mine Discharges
In 1989, the USBOR identified several locations where acidic mine discharges flowed into
French Gulch (Stover, 1989). In 1996, samples were collected from discharges such as the
Country Boy Mine Adit Discharge, Kenny Dog Springs (this location had been previously
sampled in 1994), Magnum Brown Drive seep, the Reliance Drive culvert drainage, and seeps
originating from the waste pile north of French Gulch Road. Samples were analyzed for
dissolved and total recoverable metals and water quality parameters. These discharge points
represent locations where some types of ecological receptors may be exposed, and these data are
utilized in the risk assessment.
3.2 Surface Water Data
Since 1986, the CDPHE, USEPA, BSD, USGS, NWCCOG, and Adrian Brown have collected
surface water samples from French Gulch and the Blue River. Each of these sampling events is
described in the following subsections. Sampling locations from these studies are summarized in
Table 3-1 and are shown in Figure 2-1.
3.2.1 Breckenridge Sanitation District
From 1986 to 1994, the BSD collected surface water from three sampling stations on the Blue
River. These samples were analyzed for ammonia, nitrate, organic nitrogen, total nitrogen pH,
total phosphorous, and dissolved aluminum, cadmium, copper, lead, nickel, and zinc (BSD,
1997). This study was conducted with the purpose of assessing the potential impacts of a
wastewater sludge land application program on the Blue River. With the exception of zinc, the
detection limits for the dissolved metals measured in surface water are higher than previously
measured metals concentrations in the Blue River. Therefore, surface water data from these
station are not comparable with more recent studies and have been excluded from the baseline
ERA.
3.2.2 CDPHE and EPA French Gulch Non-Point Source Program
The French Gulch Non-Point Source (NFS) Project was initiated in 1990 by the State of
Colorado to address non-point source discharges from the W-O mine and mill site into French
Gulch. The project was jointly conducted by the CDPHE and the USEPA under Section 319 of
the Federal Clean Water Act. CDPHE and EPA collected surface water samples from several
O O
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
locations on French Gulch (FG-0 to FG-9) and the Blue River(BR-l to BR-3) (Figure 2-1).
Sampling events occurred in May 1989, September 1989, and August 1994.
Samples were analyzed for dissolved and total recoverable metals and water quality parameters.
These data are available from a CDPHE and EPA as an unpublished data set (CDPHE and
USEPA, 1989). This data set is included within Appendix A and is utilized in the ERA.
3.2.3 Northwest Colorado Council of Governments (NWCCOG)
The NWCCOG collected surface water samples from the Blue River in 1997 and 1998 to better
characterize the water quality of the Blue River. The surface water samples were analyzed for
total and dissolved cadmium, copper, iron, lead, manganese, and zinc by the CDOW laboratory.
These sampling stations are designated as 654 and 655 on the Blue River upstream of French
Gulch, 643, 656, and 657 on the Blue River downstream of French Gulch. This data set is
included within Appendix A and is utilized in the ERA.
3.2.4 USGS NAWQA Program Data
The USGS initiated the NAWQA program in 1991 to characterize the current conditions and
trends in the water quality of streams and rivers in the United States. The Blue River and French
Gulch were included in this study as part of the Upper Colorado River Basin Study Unit. The
USGS collected surface water samples from five stations along French Gulch, three stations on
the Blue River and one station on the Swan River (Figure 2-1) during September 1992, October
1993, November 1993, June 1996, and July 1996.
The surface water samples collected were analyzed for dissolved and recoverable metals and
water quality. These data are included as an unpublished data set in Appendix A, and are
utilized in the ERA.
3.2.5 AdrianBrown Consultants
In September 1998, AdrianBrown initiated a surface water-sampling program scheduled to
collect monthly surface water samples from March to November each year. Currently, there are
10 sampling stations (FG-5, FG-5.5, FG-6C, PT-1, FG-7, FG-8, FG-9, BR-1, BR-2, BR-3) along
French Gulch and the Blue River (Figure 2-1) (AdrianBrown, 1999a). Locations FG-7 and FG-8
were added to the surface water sampling location list in June, 1999. FG-5.5, which is located
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
on the southern branch of French Gulch, directly south of FG-6C, was added in August 1999
(AdrianBrown, 2000). These samples are analyzed for dissolved cadmium, iron, lead,
manganese, and zinc as well as water quality parameters. At the present time, AdrianBrown
continues to collect surface water data. These data are utilized in the ERA.
3.3 Sediment Data
3.3.1 Deacon and Driver (1999)
Deacon and Driver (1999), working in conjunction with the USGS, collected sediment samples
from French Gulch and the Blue River as part of the USGS NAWQA program. Sediment sample
analytical results are available for aluminum, arsenic, cadmium, chromium, copper, iron,
mercury, molybdenum, nickel, lead, selenium, silver, and zinc. Sediment samples were collected
in October 1995 from three locations on the Blue River (BR-Adams, BR-BFG, and BR-Dillon)
and one sampling location on French Gulch (FG-1). In September 1996, additional sediment
samples were collected at FG-0, TS-3, TS-4, FG-7, FG-9A, and FG-9 sampling stations (see
Table 3-1 and Figure 2-1 for locations). These data are utilized in the ERA.
3.3.2 AdrianBrown (1999b)
In the fall of 1998, AdrianBrown collected "stream" sediment samples from the South Branch of
French Gulch and pond sediments from Dead Elk Pond (Figure 3-1) (AdrianBrown, 1999b).
Two "bank" sediment samples were also collected. It is not clear whether these bank sediments
are actually riparian soils. The sediment samples were analyzed for arsenic, lead, cadmium, iron,
silver, zinc and gold. The data are presented and discussed further in the ecological exposure
assessment (Section 5.1.2).
3.4 Biological Tissue Data
Under current water quality conditions, fish are not present in French Gulch downstream from
the mined area to the mouth of the stream (as cited in Deacon and Mize, 1997). Therefore, no
data are available on the tissue concentrations of metals in fish from the mining-impacted reach
of French Gulch.
On July 16 and 17, 1997, the USGS collected trout from the BR-1 and BR-2 sampling sites in
the Blue River (Figure 2-1). Electroshocking methods were employed in the collection of the
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
trout. Brook and brown trout were collected from the BR-2 site (below French Gulch
confluence); however, only brown trout were observed from the BR-1 site (above French Gulch
confluence). The trout collected from the BR-2 site were not collected from the main channel,
but from inflows and tributaries into the Blue River from an inflow area of "cleaner" water, near
the BR-2 site (personal communication with Bill Schroeder, EPA).
Tissue samples analyzed from these trout included fillet, gonad, kidney and liver. These tissues
were analyzed for arsenic, cadmium, copper, manganese, lead, and zinc (USGS, 1997).
Information regarding the reported weight basis is not available, so concentrations were assumed
to be reported as dry weight. These data are presented in Table 5-3 and are used in the risk
assessment.
3.5 Soil Data
The USBOR (1999) examined the geologic properties and analyzed the mine waste rock, mill
tailings, and roaster fines for metals. Samples of these materials were collected in French Gulch,
around the W-O Mining Complex from the Extenuate, Lower Tailings, Upper Tailings, Mill
Tailings, and Roaster Fines areas between October 8 and 24, 1996. Samples were collected
using ten hollow stem auger drill holes, ten backhoe-excavated test pits, four in-place density
tests in four test pits, and 131 surface and near-surface samples. Because surface samples were
collected specifically in areas where tailings and roaster fines were located, the samples
collected may not be representative of the overall French Gulch area and measured
concentrations may be biased high.
In a separate study conducted by URS Operating Services, Inc. (URS), soil samples were
collected from several locations along French Gulch Road. These samples were collected near
an area characterized by dead trees, up slope and east of the Extenuate Pile, at a residence west
of the Union Mill, and in the area near Country Boy Mine. Arsenic and cadmium concentrations
were reported to correlate with relative lead concentrations (USEPA, 1998b).
3.6 Data Organization and Evaluation
Site Database
All relevant and reliable data for the site were assembled into an electronic database (Appendix
A). This database is available upon request from USEPA Region 8.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Duplicate Records
Duplicate records contained in the database were identified by comparing individual analysis
results for a parameter at a sampling station for a specific date (and time, if available). For
example, two entries with the same value (11.2 mg/L), date, time, and laboratory sample number
were present for the concentration of zinc in surface water at sampling station FG-7. In order to
avoid double-counting, only one of these values was retained in the project database and the
other was excluded. A summary of all duplicate records excluded in the project database is
found in Appendix A.
Data Outliers
A preliminary review of the available data was performed to identify any potential outliers. One
or more analytical values that appeared to be unusual compared to others in the data set were
noted in several cases. For example, in the South Branch of French Gulch, a total of 42 samples
of surface water were collected an analyzed. For lead, 41 of these samples had values between
0.1 and 17 ug/L, with an average of 7.2 ug/L. However, one sample had a value of 360 ug/L.
The basis for such potential outliers is not known. Some outliers might be attributable to errors
during sampling, analysis, or data entry, while others may be authentic but non-representative
samples. In order to identify analytical results that were outliers, the statistical approach
(Rosner's test) recommended by Gilbert (1987) was used. This test examines the most extreme
value in a data set (i.e., the value furthest removed from the mean), and calculates the probability
that the value is drawn from the same population as the other values in the data set. The test is
two-tailed (i.e., both unusually low and unusually high values are evaluated). Because the test
assumes the data are distributed normally, while most environmental data sets are distributed
approximately lognormally, the test was performed using the log-transformed data.
In accord with the recommendation of Gilbert (1987), the test was only performed on datasets
that had at least 25 measurements. This precluded the ability to perform the test on sediment or
fish tissue, so all values in these media were retained. For surface water, sufficient data were
available to perform the test on data grouped into the following sets: South Branch French
Gulch, French Gulch (downstream of Dead Elk Pond), French Gulch Reference (upstream of the
mine impacts), Blue River (downstream of the confluence with French Gulch), and Blue River
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Reference (upstream of the confluence with French Gulch). The test was not applied to samples
from mine discharge areas or the North Branch of French Gulch, since these locations are very
heterogeneous and very large variation between samples and locations is possible in this type of
sample.
A total of 47 surface water analytical measurements out of a total of 6570 values (0.7%) were
identified as outliers by Rosner's test. Of these, 10 were identified as being unexpectedly low,
and 37 were unexpectedly high. These data points are indicated graphically in data plots
provided in Appendix B. Samples retained for analysis are indicated by black diamonds, while
outliers are shown by pink squares.
Treatment of Non-Detects
In accord with standard USEPA guidance for data usability, any sample result that was assigned
a laboratory or data validation flag of "U" (non-detect) was evaluated by assuming a numeric
value equal to l/2 the reported detection limit.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
4.0 PROBLEM FORMULATION
A screening level Problem Formulation was completed as part of the SERA in accordance with
USEPA guidelines for performing ecological risk assessments (USEPA, 1992a, 1997, 1998a).
The problem formulation presented in this section is based on that presented in the SERA, but
incorporates the findings of the SERA screening risk characterization and identification of data
gaps.
4.1 Site Conceptual Model
Figure 4-1 presents a site conceptual model (SCM) that summarizes pathways by which
mining-related chemical contaminants may be released to and migrate through the environment,
along with exposure pathways by which ecological receptors may be exposed to those
contaminants. However, as indicated in the diagram, not all exposure pathways are likely to be
of equal concern. For the purposes of this risk assessment, each exposure pathway has been
classified as follows:
The pathway is incomplete (i.e., there is no contact between the contaminated
medium and the receptor). These cases are indicated by an open box.
• The pathway is complete and is considered to be of potential concern, and
sufficient data exist to support a quantitative risk evaluation. These cases are
indicated by boxes containing a solid circle. These pathways are the primary
focus of this risk assessment.
The pathway is complete and is considered to be of potential concern, but
available data are too limited to support a reliable quantitative risk evaluation.
These cases are shown by boxes with an open circle.
• The pathway is complete, but the risk posed by the pathway is likely to be minor,
either on an absolute basis and/or in comparison to other exposure pathways that
affect the same receptor. These cases are indicated by boxes with an "X".
Because these pathways are judged to be of minor concern, they are not evaluated
quantitatively in the ERA.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
The following sections present a more detailed description of migration pathways and exposure
pathways for ecological receptors at the French Gulch Site, along with the rationale for including
or excluding a pathway for quantitative evaluation. Those exposure pathways identified as
complete, but not selected for quantitative evaluation, are further evaluated qualitatively in the
uncertainty analyses (Section 8.0).
4.1.1 Sources
As discussed in Section 3.0, the primary sources of contamination at the site include various
types of mining-related solid wastes (waste rock, tailings, roaster fines, etc.) as well as
groundwater which has accumulated in mine shafts and adits (the mine pool). In some cases,
ecological receptors may be exposed directly to these source materials, while other exposures
occur as a result of contaminant migration through the environment to secondary media. These
migration pathways are discussed below.
4.1.2 Release Mechanism
Several mechanisms exist by which chemicals that have entered the environment as a result of
historic mining activities may be release into other environmental media at the site. These are
summarized below.
Wind-born Transport
Under dry conditions, particles of solid waste or contaminated soil can be eroded by wind and
transported to adjacent areas. Depending on the nature of the source materials and soils and on
the meteorological conditions, this transport pathway is usually minor.
Transport in Surface Water Runoff
Flowing water can suspend particles of solid waste or contaminated soil and carry them with the
water. This can result in contamination of surface soils near source areas (e.g., waste piles or
tailings deposits), as well as transport of the particles into surface water bodies (e.g., streams and
rivers). In addition, chemicals may be dissolved in surface water runoff and be transported in a
dissolved rather than a particulate form.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Infiltration and Leaching to Groundwater
Chemicals dissolved in water may migrate downward under the force of gravity and enter
groundwater. Dissolved chemicals in groundwater tend to move with the groundwater, and
hence may be transported to surface water as recharge of streams or rivers, or may be released to
the surface at seeps and springs.
4.1.3 Exposure Media and Exposed Receptors
Ecological receptors may be potentially exposed to chemical contamination in one or more of
five exposure media (Figure 4-1), including surface water, sediment, aquatic prey items (food
chain), surface soil, and terrestrial prey items (food chain). The potential for contact between
ecological receptors and each of these exposure media is discussed in the following subsections.
4.1.3.1 Surface Water
Exposure of ecological receptors to contaminated surface water is the primary concern at this
site. This includes direct contact offish, benthic macroinvertebrates, reptiles and amphibians
with surface water, as well as ingestion of surface water by terrestrial species (birds, mammals).
These exposure pathways are evaluated quantitatively for fish and benthic macroinvertebrates,
but were not evaluated for reptiles and amphibians due to lack of adequate toxicity data for these
receptors.
4.1.3.2 Sediment
Benthic macroinvertebrates live in direct contact with sediment, and this exposure pathway is
evaluated quantitatively in the risk assessment. Some benthic macroinvertebrates may also
ingest fine particles of sediment while feeding, but this is likely to be a minor source of exposure
compared to direct contact with the sediments. Likewise, some fish may occasionally ingest
small amounts of sediment while feeding, but it is considered likely that this exposure pathway is
minor compared to direct contact with surface water. Therefore, ingestion of sediments by
aquatic receptors is not evaluated quantitatively.
Some terrestrial receptors that prey on aquatic food items may ingest sediment along with the
prey item. In some cases, the dose of chemical ingested from the sediment can be significant
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
compared to the dose ingested in the tissues of the y prey item, so this exposure pathway is
evaluated quantitatively.
4.1.3.3 Aquatic Prey (Food Chain)
Most metals have a moderate tendency to accumulate in tissues of aquatic species, and some
metals (e.g., mercury, lead) may tend to biomagnify. Fish are exposed to food web contaminants
mainly by ingestion of benthic macroinvertebrates. However, the dose to fish from ingestion of
chemicals in prey is usually thought to be minor compared to the direct exposure pathway.
Similarly, some benthic macroinvertebrates are predatory and may be exposed by ingestion of
other macroinvertebrates, but this exposure pathway is also likely to be minor compared to the
direct exposure pathway. Thus, ingestion exposure offish and benthic macroinvertebrates from
ingestion of aquatic prey items is not evaluated quantitatively in this assessment.
For terrestrial organisms that do not reside directly in contaminated water or sediment, ingestion
of contaminated aquatic prey items may be a significant source (at least on a relative basis) of
exposure, so ingestion offish and other aquatic prey by birds and mammals is evaluated
quantitatively.
4.1.3.4 Surface Soil
Terrestrial plants and soil invertebrates that reside in soils that have been impacted by mine
wastes are exposed by direct contact, and this pathway is likely to be significant in at least some
locations. Likewise, some terrestrial receptors may ingest soil while feeding, and this pathway
may also be potentially significant. However, this risk assessment does not attempt to quantify
the risks from these soil-related pathways, for two reasons. First, the riparian zones along both
French Gulch and the Blue River are extensively disturbed and substantial areas are covered with
piles of river cobble (e.g., see Figure 2-3 and 2-4). These piles of excavated material severely
limit plant cover and habitat use by wildlife. Second, data on the concentration of metals in
riparian zone soils are mainly restricted to areas of highest contamination and greatest
disturbance (i.e., the areas least likely to be utilized as habitat), and there are insufficient data
from areas with lesser disturbance or contamination (i.e., the areas most likely to be utilized as
habitat) to support a reliable quantitative risk evaluation. Thus, while there is little doubt that
riparian soils are contain contaminants that could be above a level of potential concern to
terrestrial receptors in some places, exposures or terrestrial receptors to soils are not evaluated
quantitatively.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Terrestrial receptors may be exposed to soils not only by ingestion but also by dermal contact or
inhalation of suspended particles. As noted above, data are too limited to support a reliable
quantification of these pathways, but this is not thought to be a significant limitation, since
dermal exposure and inhalation exposure are usually minor compared to oral exposure.
4.1.3.5 Terrestrial Prey Items (Food Chain)
Receptors feeding on terrestrial prey items (plants, small mammals, birds, etc) that reside in the
contaminated riparian zone may be exposed to mine related contaminants, and this exposure
pathway could be significant in some cases. However, for the same reasons as described above
(habitat for prey species is limited, and environmental data are available only from the areas least
likely to be used as habitat), exposure of terrestrial receptors from ingestion of terrestrial prey
items is not evaluated quantitatively.
4.1.3.6 Groundwater Seeps/Discharges
Ecological receptors are not exposed to contaminated groundwater except at locations where the
groundwater is released at the surface in springs or seeps. Because such areas are not usually
diluted by flowing water (as are streams or rivers that are recharged with contaminated
groundwater), exposure concentrations may be relatively high and exposures may be significant.
For these reasons, exposure of terrestrial receptors (both bird and mammals) by ingestion of
groundwater at seep areas is evaluated quantitatively. Exposure of reptiles and amphibians by
direct contact with seep water could be of concern, but was not evaluated quantitatively due to
lack of adequate toxicity data for these receptors.
4.1.3.7 Summary of Exposure Pathways Selected for Quantitative Evaluation
In summary, the following pathways are evaluated quantitatively in this risk assessment:
Medium
Surface water
Sediment
Aquatic prey items
Groundwater seeps
Pathway and Receptor
Direct contact offish and benthic macroinvertebrates
Ingestion by birds and mammals
Direct contact by benthic macroinvertebrates
Ingestion by terrestrial birds and mammals
Ingestion by mammals and birds
Ingestion by terrestrial birds and mammals
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
4.2 Selection of Chemicals of Potential Concern
Chemicals of Potential Concern (COPCs) are chemicals which exist in the environment at
concentrations that might be of potential concern to ecological receptors, and which are derived,
at least in part, from site-related sources.
The procedure used to select COPCs for this ERA is presented schematically in Figure 4-2. The
selection procedure was similar for aquatic and wildlife receptors, except that risks from
beneficial minerals such as sodium, potassium, iron and calcium were not considered for wildlife
receptors (since wildlife receptors have efficient homeostatic mechanisms to control the
absorption of these minerals), but were considered for aquatic receptors.
The screening procedure was applied to surface water and sediment for each of the exposure
scenarios of concern, as described in the site conceptual model (above). In brief, if there was no
toxicity information to evaluate the potential effects of the chemical, the chemical was assigned
to the Qualitative COPC category (Type 1). Chemicals that have an appropriate TRY but were
detected in less than 5% of the samples from a medium (surface water, sediment) were usually
excluded from further consideration, since chemicals that are rarely detected at a site are not
likely to be site-related. However, if the detection limit for a chemical was too high to expect
detection of the chemical if it were present at a level of concern, the chemical was assigned to
the Qualitative COPC category (Type 2). If a TRV was available for a chemical and the
maximum detected value of the (from anywhere on the site) was less than the TRV, it was
concluded that the chemical does not occur at a level of potential concern and was not evaluated
as a COPC. If the maximum detected value did exceed the TRV, then the chemical was
evaluated quantitatively. It should be noted that this selection procedure is intended to be
conservative: that is, the selection procedure is intended to eliminate only those chemicals that
are clearly not of potential ecological concern, and to carry forward those chemicals that might
be of concern.
For surface water, the concentration values evaluated included measurements of both total and
dissolved metals. The TRVs used to evaluate surface water and sediment are described in
Section 6. In brief, surface water risks to aquatic receptors were evaluated using the chronic
Ambient Water Quality Criteria (AWQC) established by EPA. In cases where the chronic
AWQC is hardness dependent (as it is for most metals), a hardness of 50 mg/L was assumed,
since most values measured at the site are at or above this level. Surface water risks to wildlife
were evaluated using water benchmark values established by Sample et al. (1996). Sediment
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
risks to aquatic receptors were evaluated using the sediment quality criteria established by
McDonald et al. (2000) or by Ingersoll et al. (1996), and sediment risks to wildlife from
sediment ingestion were evaluated using the dietary benchmarks established by Sample et al.
(1996). The results of the COPC selection procedure are detailed in Appendix C and are
summarized in Table 4-1 (surface water) and Table 4-2 (sediment).
4.3 Identification of Goals and Endpoints
4.3.1 Ecological Management Goals
The overall management goal for ecological health at the French Gulch Site established by EPA
in consultation with other stakeholders at the site is as follows:
Ensure adequate protection of ecological systems within the impacted areas of the
French Gulch Site by protecting them from the deleterious effects of acute and chronic
exposures to site-related chemicals of concern.
The specific objectives of the ecological risk assessment for the French Gulch Site established by
USEPA Region 8 at the time of the SERA were as follows:
Identify the receptors (species) at potential risk, the contaminants of concern and
the potential exposure pathways.
• Estimate the exposure levels and the adverse effect of these exposure levels for
each receptor for each contaminant of concern.
Identify any State or Federally listed endangered species.
Identify if any wetland or riparian habitat are potentially affected.
• For French Gulch and the Blue River identify what the potential aquatic
community would be, given the existing aquatic habitat and stream flow, if the
source of contamination from the mine pool was removed.
• Identify if habitat of French Gulch and the Blue River is limiting use by fish
species or if use is limited only by extent of metal contamination.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
• Given the existing habitat and flow in French Gulch and the Blue River, what
reduction in the contaminants of concern is needed to allow for a reproducing
brown trout fishery, reproducing brook trout fishery and others.
Given the existing riparian and wetland habitat, is a reduction in the contaminants
of concern in surface water, sediments, soil or food needed to allow for protection
of growth, reproduction and survival for wildlife species? For survival of
terrestrial plants and soil invertebrates?
Based on the results of the SERA, the objectives of this ERA are revised to include the following
specific goals:
Utilize new site data to refine and confirm risk estimates for aquatic and
terrestrial receptors
Utilize site-specific toxicity testing to confirm calculated risk estimates and to
help identify a preliminary remediation goal for surface water in the Blue River
downstream of the confluence with French Gulch
• Refine the evaluation of habitat suitability in order to determine if French Gulch
would support a viable trout population absent significant metals toxicity
4.3.2 Identification of Assessment and Measurement Endpoints
Assessment endpoints are explicit statements of the characteristics of the ecological system that
are to be protected. Assessment endpoints are either measured directly or are evaluated through
indirect measures. Measurement endpoints represent quantifiable ecological characteristics that
can be measured, interpreted, and related to the valued ecological components chosen as the
assessment endpoints (USEPA, 1992a and USEPA, 1997).
The following assessment and measurement endpoints are used to interpret potential ecological
risks for the French Gulch Site. In some cases, more than one measurement endpoint is
identified for a particular assessment endpoint. These instances permit a weight-of-evidence
approach to be used in risk characterization. In other cases, a measurement endpoint may be
relevant to more than one assessment endpoint.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Assessment and Associated Measurement Endpoints
Assessment Endpoint
Protection of aquatic invertebrates and fish from
adverse effects related to exposure to COPCs in
the aquatic food chain.
Protection of aquatic invertebrates and fish from
adverse effects related to exposure to COPCs in
surface water and sediment.
Protection of terrestrial wildlife from adverse
effects to growth, reproduction or survival related
to exposure to COPCs in surface water, sediment,
and food.
Habitat suitability
Measurement Endpoint
Comparison of detected COPC concentrations in
fish tissue with toxicity benchmarks for fish tissue
residues.
Comparison of COPC concentrations in surface
water and sediment to aquatic toxicity
benchmarks.
Toxicity testing of surface water to identify
dilution (reduction of metals) necessary to allow
for survival and growth offish.
Identify fish and aquatic invertebrate species that
should be resident given the habitat parameters
present.
Comparison of the predicted average daily doses
of COPCs from surface water, sediment and diet
to toxicity reference values.
Use measured habitat parameters to quantify and
compare habitat suitability at several locations
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
5.0 ECOLOGICAL EXPOSURE ASSESSMENT
The method used to characterize the exposure of ecological receptors depends upon the receptor
being evaluated and the exposure pathway of potential concern. In most cases, exposures of
aquatic (fish, benthic macroinvertebrates) or semi-aquatic (amphibians, reptiles) receptors to
contaminants in the aquatic environment are characterized in terms of the concentration of
contaminant in the direct contact media (surface water and sediment). Alternatively, exposure of
aquatic receptors may be characterized in terms of the concentration of COPC in the tissues of
the receptor. For terrestrial receptors (birds, mammals) that are exposed by ingestion of water,
sediment or prey items, exposure is usually characterized in terms of ingested dose.
5.1 Exposure of Aquatic Receptors
5.1.1 Direct Contact with Surface Water
Aquatic invertebrates and fish are potentially exposed to COPCs in surface water via direct
contact. Because concentrations of COPCs in surface water can vary significantly over time and
location (sampling station), exposure is best characterized as a distribution of values at each
location of concern. Summary statistics showing the detection frequency and the minimum,
mean, and maximum concentration value for dissolved and total recoverable levels of each
COPC at each surface water sampling station are presented in Tables 5-l(a) to 5-l(m). In
general, risks to aquatic receptors are better predicted by the concentration of dissolved metals
than total metals (Prothro, 1993), while risks to terrestrial receptors are related to total
recoverable.
5.1.2 Direct Contact with Sediment
Benthic invertebrates are potentially exposed to COPCs in sediment via direct contact. Although
concentrations of COPCs in sediment are usually not as time-variable as concentrations in
surface water, concentrations do fluctuate as contaminated material is added or removed by
surface water flow. In addition, there may be significant small scale variability in sediment
concentrations at any specific sampling station. Therefore, exposure to sediments is also best
characterized as a distribution of values at a specific location. However, in this case, there is
only one measurement of sediment concentration available per sampling location, so exposure
must be approximated as a single concentration value. These data are summarized in Table 5-2.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
5.1.3 Fish Tissue Burdens
Fish are exposed to COPCs in surface water by direct contact, ingestion, and to COPCs in
sediment and food by ingestion. These exposures result in accumulation of COPCs in fish
tissues, and the level of COPC in the tissue is a direct indicator of the total exposure from all
routes. Data on the level of arsenic, cadmium, copper, manganese, lead and zinc in fillet, gonad,
liver, and kidney tissues were reported by USGS (1997) for trout collected from BR-1 and BR-2
in the Blue River. The tissues levels measured in this study are summarized in Table 5-3. It
should be noted that the trout collected from the BR-2 site were not collected from the main
channel, but from inflows and tributaries into the Blue River near the BR-2 site (personal
communication with Bill Schroeder, EPA). As such, these fish may not be full-time residents in
the Blue River, and so the tissue levels in these fish may not reflect the levels that occur in fish
that reside in mining-impacted waters.
5.2 Exposure of Terrestrial Wildlife
Wildlife species may be exposed to COPCs by ingestion of surface water, sediment, soil, and
aquatic and terrestrial food chain items. The following subsections describe the selection of
specific wildlife species to use as representative receptors, along with the methods used to
estimate intakes (doses) for these representative wildlife species for each exposure medium.
5.2.1 Identification of Representative Wildlife Species
It is not feasible to evaluate exposures and risks for each avian and mammalian species
potentially present within the study area. For this reason, specific wildlife species are identified
as representative wildlife species for the purpose of estimating quantitative exposures (doses) in
the ERA. Selection criteria for representative wildlife species include trophic level, feeding
habits, and other availability of life history information. At this site, the species selected for
evaluation of wildlife exposures via ingestion of surface water, sediment and the aquatic food
chain include:
Mink (Mustela vison)
The mink is selected to represent mammalian piscivores exposed by ingestion of aquatic
prey items as well as by ingestion of surface water and by incidental ingestion of
sediment
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Great Blue Heron (Ardea herodias)
The heron is selected to represent avian piscivores exposed by ingestion of aquatic prey
items as well as by ingestion of surface water and by incidental ingestion of sediment
Each of these species have been documented in Summit County (see Tables 2-4 and 2-5).
As noted above, exposure of wildlife from ingestion of soil and terrestrial food web items was
not evaluated due to lack of data on soil contamination levels in areas that are likely to be
serving as habitat for terrestrial wildlife.
5.2.2 Method for Estimating Dose
Exposure of terrestrial receptors from ingestion of contaminated media is usually characterized
in terms of dose. Dose is not easily measurable in the field, but rather is calculated using an
equation of the form:
Dose (mg/kg-day) = Cone, (mg/unit medium) "Intake (units of medium per day) / Body weight (kg)
Because terrestrial receptors are able to move about and are likely to receive exposures over a
range of locations, the best predictor of exposure is the arithmetic mean concentration over the
area where the receptor roams. However, because the true mean concentration cannot be
calculated from a limited set of data, the 95% upper confidence limit (UCL) of the mean
concentration is generally used as a conservative estimate of the concentration term. When the
95% UCL exceeds the highest detected concentration, the maximum value is used. The final
value (the 95% UCL or the maximum, whichever is lower) is referred to as the Exposure Point
Concentration (EPC).
Information on body weight, ingestion rates, and dietary composition for the great blue heron
and the mink are available in the Wildlife Exposure Factors Handbook (USEPA, 1993a; USEPA,
1993b). These exposure factors are detailed in Appendix D and are summarized below:
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Wildlife Exposure Factors
Species
Great Blue Heron
(Ardea herodias)
Mink
(Mustela vison)
Water
Ingestion Rate
(L/day)
0.1
0.058
Food
Ingestion Rate
(kg/day)
0.411
0.089
Sediment
Ingestion Rate
(kg/day)
1E-03
2E-4
Body
Weight
(kg)
2.34
0.556
The fraction of the total daily food and water intake that occurs in an area of contamination is
characterized by the Area Use Factor (AUF). That is, if a receptor spends about 50% of its time
in the contaminated area (AUF = 0.5), it is assumed that about 50% of the daily food and water
is ingested in the contaminated area. In order to be conservative, an AUF of 1.0 (100%) was
assumed for both mink and heron. Assumption of a factor of 1.0 will tend to overestimate
exposure and risk in the case where the receptor migrates between different locations and ingests
food and water at locations that are not contaminated.
5.2.3 Ingested Dose from Surface Water
Exposure from ingestion of surface water is quantified using the following equation:
IR,.
water
BW
AUF
where:
Dosewater
EPC
J-'-1 '-'water
AUF
BW
Daily intake of COPC (mg/kg-d)
Exposure Point Concentration of COPCs in surface water (mg/L)
Ingestion rate of water (L/day)
Area Use Factor (unitless)
Body weight (kg)
Table 5-4 presents the estimated exposure point concentrations and the associated doses for each
COPC for each of semi-aquatic wildlife receptor from ingestion of surface water at each
exposure area.
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_ Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
5.2.3 Ingested Dose from Sediments
Exposures to COPCs in sediment are quantified based on the following equation:
7D
— r sed
sed —
where:
Dosesed = Daily intake of COPC from sediment (mg/kg-d)
IR^d = Ingestion rate of sediment (kg dry weight/day)
Csed = Exposure Point Concentration (EPC) (95th upper confidence limit
on the arithmetic mean or the maximum whichever is lower) of
COPCs in sediment (mg/kg dry weight)
AUF = Area Use Factor (unitless)
BW = Body weight of the receptor of interest (kg wet weight).
Table 5-5 presents the estimated exposure point concentrations and associated doses for each
representative wildlife species resulting from exposure to COPCs in sediment.
5.2.4 Ingested Dose from Aquatic Prey
The dietary intake of a COPC for each representative terrestrial wildlife species is estimated by
the following equation:
where:
Dosediet = Daily dietary intake
IRfood = Ingestion rate of food
Cfoodi = Concentration of COPC in food type "i" (aquatic invertebrate, fish,
plant or soil invertebrate; mg/kg wet weight);
df; = Dietary fraction (proportion in the diet) of food type "i" (unitless)
BW = Body weight (kg).
For the ERA, the diet for the two semiaquatic wildlife species is assumed to be composed of
100% fish (dffish), since this is the only aquatic prey type for which analytical data are available.
The assumption that 100% of the diet is fish is not likely to result is a significant error in the
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
estimation of ingested dose for either heron or mink, since the heron does ingest mainly fish, and
other types of aquatic prey ingested by mink (crustaceans, benthic invertebrates) are likely to
have tissues concentrations that are generally similar to fish.
Dry weight concentrations of COPCs in fish tissue (see Table 5-3) were converted to wet weight
concentrations by multiplying by a wet weight-dry weight ratio of 0.24 (USFWS, 1998). The
calculation of the EPC for fish is complicated by the fact that the available data are not for whole
fish (as would be ingested by the heron and mink), but for several different types of tissues
(fillet, liver, kidney, gonads). In order to estimate the approximate whole body concentration,
the tissue-weighted average concentration was calculated as:
whole body
W,)/I/,
where
C,
f«
Concentration in tissue type "t"
Whole body mass fraction of tissue type "t"
Representative values of ft for trout are summarized below:
Tissue
Fillet (muscle)
Liver
Kidney
Gonads (non-breeding)
ft
67%
1.3%
0.8%
1%
Source
a
a
a
b
(a) Nichols etal. (1990)
(b) J. Nichols (personal communication)
Resulting EPCs for fish tissue are shown in Table 5-6, along with the estimated dietary in take
by heron and mink. Note that the evaluation of this exposure pathway is completed only for two
locations in the Blue River, because fish tissue data are not available for French Gulch.
5-6
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
6.0 ECOLOGICAL EFFECTS ASSESSMENT
The effects of a chemical contaminant on an ecological receptor are characterized by an
exposure-response curve. The shape and location of the exposure response curve generally
depends on the chemical, the receptor, the toxicological response, the exposure route, and the
exposure duration. Key points on an exposure response curve that are often used to characterize
the effects of a chemical may include the no-observed adverse effect level (NOAEL) or
concentration (NOEC), the lowest observed adverse effect level (LOAEL) or concentration
(LOEC), or the exposure level that causes a response in some specified fraction of the test
animals (e.g., LD50, LC50, EC20, etc). These key points on an exposure response curve are
usually referred to as Toxicity Reference Values (TRVs) or as toxicity benchmarks. When
characterizing risks to environmental receptors, estimates of the NOAEL or NOEC are usually
preferred, although estimates of the LOAEL or LOEC may also be informative. The following
sections identify the best available TRVs or toxicity benchmarks for each COPC and each
ecological receptor.
6.1 Aquatic Receptors
6.1.1 Toxicity Benchmarks for Surface Water
The USEPA (USEPA, 1995; USEPA, 1996b) has established acute and chronic Ambient Water
Quality Criteria (AWQC) values for each of the COPCs selected for evaluation in surface water.
The acute AWQC is intended to protect against short-term (48-96 hour) lethality, while the
chronic AWQC is intended to protect against long-term effects on growth, reproduction, and
survival. AWQC values are not species-specific, but are designed to protect at least 95% of the
aquatic species for which toxicity data are available. Therefore, these AWQC values were
selected as the toxicity benchmarks for evaluating direct risks to the aquatic community from
direct contact with surface water.
For the COPCs at this site (metals), many of the AWQC values are dependent on the hardness of
the water, so the precise value of the acute and chronic AWQC that applies to a sample depends
on the hardness of that sample. EPA provides separate equations for calculating the AWQC
depending on whether the site values are measured as dissolved or as total recoverable metals.
There is general consensus that toxicity to aquatic receptors is dominated by the level of
dissolved metals (Prothro 1993), so all exposure and risk calculations in this ERA are based on
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
dissolved metals. The equations used to calculated the acute and chronic AWQC values for
dissolved metals are presented in Table 6-1. Table 6-1 also lists the highest hardness tested in
the dataset used to derive the AWQC equations. Because extrapolation beyond these values is
uncertain, the maximum tested hardness was used as a conservative value in calculating AWQC
values for samples with higher hardness values.
6.1.2 Toxicity Benchmarks for Sediment
Toxicity benchmarks for benthic invertebrates for exposure to COPCs in sediment were
identified based on a review of sediment quality guidelines published in the literature. Several
sets of sediment quality guidelines are available. The National Oceanic and Atmospheric
Administration (NOAA) compiled a set of Effects Range Low (ERL) and Effects Range Median
(ERM) levels for constituents in sediment (Long and Morgan, 1991). The Ontario Ministry of
Environment has identified a set of Severe Effects Threshold (SET) values (Persaud et al., 1993).
MacDonald Environmental Sciences Ltd. (1994) expanded on the work of Long and Morgan
(1991) and developed a set of guidelines including threshold effects levels (TELs) and probable
effects levels (PELs). These sediment quality guidelines are derived based on data primarily
from marine environments.
Ingersoll et al. (1996) compiled freshwater sediment toxicity data from nine different sites in the
United States and identified a series of sediment effect concentrations (SECs) for a series of
metals in sediment. The SECs are defined as the concentrations of individual contaminants in
sediment below which toxicity is rarely observed and above which toxicity is frequently
observed. The database was compiled to classify toxicity data for Great Lakes sediment
samples. Ingersoll et al.(1996) derived five different SECs according to the methodology of
Long and Morgan (1990), Persaud et al. (1993) and MacDonald Environmental Sciences Ltd.
(1994). The SECs include an ERL, ERM, TEL, PEL and no effect concentration (NEC).
Ingersoll et al (1996) calculated these freshwater ERL, ERM, TEL and PEL values using the
same procedures as NOAA and MacDonald Environmental Sciences Ltd. (1994).
NOAA ERL and ERM Values. The NOAA ERL represents the 10th percentile of values sorted
in ascending order reported to be associated with an adverse effect. The NOAA ERM is the
median value in the ranking. An ERL is defined by Long and Morgan (1990) and Long et al.
(1995) as the concentration of a chemical in sediment below which adverse effects are rarely
observed or predicted among sensitive species. An ERM is defined by Ingersoll et al (1996) as
the concentration of a chemical above, which effects are frequently or always observed or
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
predicted among most species. The ERLs calculated by Ingersoll et al. (1996) use the 15th
percentile.
State of Florida TEL and PEL Values. MacDonald Environmental Sciences Ltd. (MES 1994)
calculated TELs and PELs using an expanded database of Long and Morgan (1991). Freshwater
data were excluded from the analyses. Sediment concentrations associated with an adverse
effect were sorted in ascending order and an ERL (15th percentile) and ERM (50th percentile)
were identified. The concentrations associated with no adverse effect were also sorted and a no
effect range high (85th percentile) and no effect range median (50th percentile) were identified.
The TEL is equal to the geometric mean of the ERL and no effect range median. The PEL is
equal to the geometric mean of the ERM and the no effect range high. Although similar, the TEL
and PEL values are lower than the ERL and ERM values. The values are lower because they are
calculated using both "effect" and "no-effect" data; whereas, the ERL and ERM use only "effect"
data. The NEC is the maximum concentration of a chemical in sediment that does not
significantly adversely affect the particular response when compared to the control.
Consensus-Based Sediment Quality Guidelines (SQGs). In an effort to focus on agreement
among the various sediment quality guidelines (previously discussed), MacDonald et al. (2000)
issued consensus-based SQGs for 28 chemicals of concern. For each chemical of concern, a
threshold effect concentration (TEC) and a probable effect concentration (PEC) were identified.
The predictive reliability of these values was also evaluated. The criteria for establishing
reliability of the consensus-based PECs was based on Long et al. (1998). This predictive ability
analyses was focused on the ability of each SQG when applied alone to classify samples as either
toxic or non-toxic. These criteria are intended to evaluate the narrative intent of the values.
Sediment toxicity should be observed only rarely below the TEC and should be frequently
observed above the PEC. Individual TECs were considered reliable if more than 75% of the
sediment samples were correctly predicted to be non-toxic. Similarly, the individual PEC was
considered reliable if greater than 75% of the sediment samples were correctly predicted to be
toxic. Therefore the target levels of both false positives (samples incorrectly classified as toxic)
and false negatives (samples incorrectly classified as non toxic) was 25% using the TEC and
PEC. The SQGs were considered to be reliable only if a minimum of 20 samples were included
in the predictive ability evaluation (MacDonald et al., 2000). The results of the reliability
analyses are summarized in Table 6-2.
Because field collected sediments contain a mixture of chemicals, a second analyses was
completed to investigate whether the toxicity of a sediment could be predicted based on the
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
average of the PEC ratios for the sediment, using only the PEC values that were found to be
reliable. It was found that 92% of sediment samples with a mean PEC quotient > 1.0 were toxic
to one or more species of aquatic organisms. The relationship between the mean PEC quotient
and incidence of toxicity is depicted in Figure 6-1. As seen, the mean PEC quotient was found
to be highly correlated with incidence of toxicity (R2 = 0.98) (MacDonald et al., 2000).
For this ERA, the consensus-based SQG TEC and PEC values from MacDonald et al. (2000) are
used as a range of toxicity benchmarks for sediments. These values are summarized in Table 6-
3. Consensus values are not available for aluminum, iron, manganese, molybdenum or silver.
For silver, sediment toxicity benchmarks are the range of values reported by NOAA (ERL and
ERM) (Long and Morgan, 1995) and the state of Florida (MacDonald Environmental Sciences
Ltd., 1994). For aluminum, iron and manganese, sediment toxicity benchmarks are the lowest
and highest SEC values from Ingersoll et al. (1996). Sediment toxicity benchmarks for could
not be identified for molybdenum. Although some sediment benchmarks exist for selenium,
these are based on protection of wildlife species (e.g., birds) rather than benthic organisms. In
general, selenium is much less toxic to invertebrate than vertebrates animals (USDOI 1998).
The lowest and highest benchmarks for each COPC in sediment are used to calculate a range of
hazard quotients in Section 7.
6.1.3 Toxicity Benchmarks for Fish Tissue
Tissues levels of COPCs can sometimes be used as direct indicator of the potential for toxic
effects. Jarvinen et al. (1999) provide a compilation of studies summarizing tissue residues of
organic and inorganic chemicals in fish tissues and whether the tissues levels were or were not
associated with the occurrence of adverse effects to the organism. Appendix E provides detailed
summaries of the studies which provide information on the tissue levels associated with toxicity
of each COPC, and the tissue-concentrations selected to serve as TRVs for each COPC are
summarized in Table 6-4. All of the values shown are intended to represent no-effect
concentrations. Tissue concentrations are converted from wet weight to dry weight using a
conversion factor (CF) of 0.2 (Jarvinen and Ankley, 1999).
6-4
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
6.2 Wildlife Toxicity Reference Values (TRVs)
The TRVs selected to characterize risks to wildlife species are based on NOAEL and LOAEL for
long-term effects on growth, reproduction and survival. This range of TRVs is used because the
true threshold for adverse effects is presumed to occur somewhere in the interval between the
NOAEL and the LOAEL, and the range provides an indication of the uncertainty in the true
threshold for adverse effects.
Oral NOAEL and LOAEL TRVs for mink and heron were developed based on a critical review
of published toxicity data. Three secondary sources (Opresko et al., 1995; Sample et al., 1996;
and PRC, 1997) were used to identify key toxicological studies for each of the COCs. The
studies were obtained and reviewed independently to determine the relevance and reliability of
the study results for derivation of a TRV.
Separate TRVs (both NOAEL-based and LOAEL-based) were developed for exposure via water
and the diet. This distinction is based on the observation that the absorption (and hence the
toxicity) of metals in the diet is usually lower than metals dissolved in water. Both water and
dietary TRVs are based on published toxicity data wherever possible. If toxicity data are
available for only one of these media (water or food, but not both), a relative absorption factor of
50% was assumed to extrapolate to the other medium:
TRV(water)= TRV(food) x 0.50
TRV(food) = TRV(water) 70.50
This adjustment factor of 50% is based on professional judgement, but is supported by evidence
that metals in water typically exist in a readily bioavailable form, and that dietary materials
(proteins, carbohydrates, and other minerals) tend to bind metals and/or compete for uptake sites,
hence reducing their bioavailability. This concept has been used previously by the USEPA in
the derivation of food- and water-based reference doses for cadmium (IRIS, 1998). TRVs for
food were also used for exposure via ingestion of soil and sediment.
When reliable toxicity data could not be located for a representative species, it was necessary to
extrapolate toxicity data from studies using another species. In some cases, available toxicity
data were too limited to allow precise definition of NOAEL and LOAEL values for relevant
endpoints. To account for these data gaps, each TRV was derived from the study dose level
identified as the NOAEL or LOAEL by dividing by an Uncertainty Factor (UF) as follows:
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
TRY = Study Dose /UF
The value of UF was calculated as the product of a series of sub-factors (listed in Table 6-5). In
general, EPA Region VIII recommends that HQ values be calculated only in cases where the
total UF used to derive a TRY is less than 100.
The detailed derivation of the TRVs for mink and heron are presented in Appendix F, and the
resulting values are summarized in Table 6-6.
6-6
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
7.0 RISK CHARACTERIZATION
7.1 Results of the SERA and Identification of Goals for ERA
The screening-level risk characterization (SRC, 2001) identified the following risks to ecological
receptors at the site:
• Dissolved metals concentrations in French Gulch surface water downstream of the W-O
Mine complex to the confluence of the Blue River are above the range associated with
acute and chronic toxicity to aquatic receptors. These concentrations were judged to be
sufficient to account for the observed absence of trout populations (and other fish
species) and limited benthic invertebrate communities in French Gulch.
• Dissolved metals concentrations in Blue River surface water downstream to BR-2 below
the confluence with French Gulch are above the range associated with acute and chronic
toxicity to aquatic receptors. These levels were judged to be sufficient to account for the
relatively low trout populations and limited benthic invertebrate communities in this
reach.
• The metals concentrations measured in French Gulch sediment (aluminum, arsenic,
cadmium, copper, chromium, lead, manganese, mercury, nickel, silver and zinc) are
above concentrations associated with toxicity to benthic invertebrates.
Maximum concentrations of metals (cadmium, copper and zinc) measured in fish
collected from BR-1 and BR-2 are within the range associated with adverse effects to the
fish (growth, survival or reproduction).
• If wildlife species (great blue heron and mink) were to consume fish with tissue
concentrations of cadmium, copper and zinc similar to the maximum concentrations
measured in the tissues offish from BR-2, then adverse effects are possible.
The metals concentrations measured in French Gulch and Blue River surface water
(aluminum, cadmium, lead, manganese and zinc) and sediments (aluminum and lead) are
above those associated with adverse effects to wildlife (great blue heron and mink)
resulting from ingestion.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
The risk characterization presented in this Section represents an update of the information
presented in the SERA, with the following additions and changes:
• Toxicity testing of surface water samples from four locations in French Gulch and one
location in the Blue River was performed by EPA. These data were added to the risk
characterization for aquatic receptors. The data were used to identify the necessary
reduction of zinc concentrations to allow for the survival offish.
• Several sets of surface water samples have been analyzed in the interim from the data
used in the ERA to the present report. These data were added to the calculations in
Section 5 for exposure and in this section for calculation of risks (hazard quotients) for
aquatic receptors and terrestrial wildlife.
• The Colorado Division of Wildlife (CDOW) collected information on the quality of the
habitat present in French Gulch and the Blue River for the support of benthic invertebrate
and fish communities. This information is added to the risk characterization for aquatic
receptors.
• More realistic calculations of exposure to birds and mammals from ingestion offish,
using estimated whole body concentrations rather than maximum tissue levels.
Improved characterization of risks to aquatic receptors from surface water by using the
distribution of surface water values at a station rather than only the average and
maximum values.
7.2 Risk Characterization for Aquatic Receptors
7.2.1 Risks from Surface Water
Potential risks for aquatic receptors to COPCs in surface water were evaluated by six alternative
approaches:
Comparison of surface water concentrations of COPCs with AWQCs
• Comparison of surface water concentrations with genus/species mean acute and
chronic toxicity values.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
• Evaluation of existing surface water toxicity testing data for French Gulch and the
Blue River. Comparison of toxicity observed to that observed for upstream
(reference) surface water samples.
Evaluation of existing data on the status of benthic macroinvertebrate
communities in French Gulch and the Blue River. Comparison of upstream
(reference) community structure with the downstream (metal-exposed)
communities.
• Evaluation of existing data on the status of fish populations in French Gulch and
the Blue River. Comparison of upstream (reference) populations with the
downstream (metal-exposed) populations.
Evaluation of existing data on the quality of habitat present in French Gulch and
the Blue River for the support of benthic invertebrate and fish populations.
The individual results are provided below in Sections 7.2.1.1 to 7.2.1.6, with an overall
weight-of-evidence evaluation in Section 7'.2.1.7'.
7.2.1.1 Hazard Quotients Based on AWQC Values
The first portion of the risk evaluation for aquatic receptors (aquatic invertebrates and fish) for
exposure to COPCs in surface water is based on the Hazard Quotient (HQ) approach. The HQ is
defined as the ratio of the exposure point concentration to the appropriate toxicity reference
value:
HQ = Concentration / TRY
If the HQ is less than or equal to one, it is believed that no unacceptable risks will occur in the
exposed aquatic population. If the value of HQ exceeds one, then unacceptable risks may occur,
with the probability and/or severity of the adverse effect tending to increase as the value of HQ
increases.
Because the toxicity of COPCs in surface water to aquatic receptors is usually dependant on the
length of exposure time, the HQ is calculated both for short-term (acute) and long-term (chronic)
exposure conditions, using EPA's acute and chronic AWQC values as the TRV. As noted above,
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
because risks from metals in surface water are best predicted from the concentration of dissolved
metals, all HQ results are based on the dissolved concentration. In cases where the acute and
chronic AWQCs are hardness-dependent, any sample where hardness was not reported was not
included in the HQ distribution.
The detailed calculations of HQ values for each COPC in each sample are presented in electronic
format in Appendix G. The results are summarized graphically in Figures 7-1 a to 7-1 h. A figure
is not presented for mercury, since mercury was not detected in any water sample collected from
French Gulch or the Blue River, with the only detect occurring at Station WP-1.
Note that the results in these figures are plotted on a log-scale, so large differences between HQ
values are somewhat compressed. In each figure, the upper panel reflects risks of acute toxicity
from short-term exposures, while the lower panel reflects risks of chronic effects on growth or
reproduction due to longer-term exposure. The bar for each station reflects the variability in
concentration (and hence risk) between different samples of surface water from the station.
Inspection of Figures 7-la to 7-lh reveals the following main conclusions:
• HQ values are largely below a level of concern (HQ<1E+00) for aluminum, copper,
nickel, and silver. Further, HQ values show relatively little spatial pattern, suggesting
that these chemicals are not likely to be primarily attributable to releases from mine
wastes.
• HQ values for iron are largely above a level of concern is samples from the North Branch
of French Gulch, but are below a level of concern in other reaches, including the South
Branch and below.
• Acute HQ values for lead are below a level of concern in nearly all locations, but chronic
HQ values exceed a value of 1E+00 in some (but not all) samples from the North Branch
of French Gulch. Chronic HQ values for lead are largely below a level of concern in the
South Branch and in the Blue River.
Acute HQ values for cadmium are above a level of concern in the North Branch, but are
mainly below a level of concern elsewhere except after the North Branch rejoins the
south Branch at FG-9. However, chronic HQ values for cadmium are above a level of
concern over nearly all of the French Gulch (from FG-6 to FG-9) and even into the Blue
7-4
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
River. Chronic HQ values for cadmium are not above a level of concern in the upstream
(reference) portions of French Gulch or the Blue River.
• HQ values for zinc are well above a level of concern for both acute and chronic toxicity
at nearly all non-reference locations. Highest values are observed in samples from the
North Branch, and HQ values increase in a clear spatial pattern from upstream to
downstream along the South Branch. Values are well above a level of concern in the
Blue River just downstream of the confluence with French Gulch, and do not drop below
a level of concern until Station BR-3 and beyond.
In summary, these HQ calculations predict that surface waters from French Gulch and in the
Blue River downstream of the confluence with French Gulch have high acute and chronic
toxicity to aquatic receptors, with a large majority of the hazard being attributable to zinc.
Cadmium, lead, and iron may contribute some incremental risk in some stations (mainly in the
North Branch).
7.2.1.2 Comparison of Species/Genus Mean TRVs to Surface Water Concentrations
Evaluation of concentration data by comparison to AWQC values is useful in assessing risks to
the aquatic community as a whole, but does not provide information on which species may be
most at risk. Figure 7-2 compares the distributions of surface water concentrations for cadmium
(Figure 7-2a) and zinc (Figure 7-2b) to TRVs derived for a number of different species and age
groups offish and benthic receptors. In both figures, TRVs for fish are shown on the left side,
while TRVs for benthic organisms are shown on the right side. All of the TRVs for fish and
benthic invertebrates are derived from the corresponding AWQC Documents prepared by EPA
(1985b-e, 1987, 1996), as follows:
Acute TRV = Species or genus mean LC50 / 2
Chronic TRV = Species or genus mean chronic value
Because the toxicity of most of the contaminants of concern depends on water hardness, all of
the data (both the toxicity values and the concentration values) were normalized to a hardness of
60 mg/L, since this is approximately the average hardness of water in the reference portion of
French Gulch (stations FG-0, FG-1, FG-2, FG-3) and in the Blue River upstream of the
confluence with French Gulch (stations 654, 655, BR-1 and BR-Adams St). This normalization
is achieved using the following equation:
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
C(60) = C(H) x TRV(60) / TRV(H)
where:
C(60) = normalized concentration
C(H) = original concentration (hardness = H)
TRV(60) = Acute AWQC (dissolved) at a hardness of 60 mg/L
TRV(H) = Acute AWQC (dissolved) at hardness = H
In the case of cadmium (Figure 7-2a), it may be seen that most concentrations in the North
Branch of French Gulch approach or exceed reported acute and/or chronic TRVs values for
brook, brown, and rainbow trout. In the South Branch, cadmium concentrations would be not be
expected to cause effects at Stations FG-4 or FG-5, but would be expected to cause effects at
Stations FG-5.5 to FG-10. Cadmium concentrations at most locations in French Gulch
downstream from the W-O complex also enter a range of chronic concern for Daphnia spp. and
snails, but would not be expected to cause effects on most other invertebrates.
In the case of zinc (Figure 7-2b), concentrations in French Gulch and the Blue River approach or
exceed reported acute and/or chronic TRVs for most species offish, including brook and
rainbow trout. Zinc concentrations at all locations, with the exception of the reference locations,
are also frequently in a range of acute toxicity for most invertebrates, including Daphnia spp.,
Tubificid worms, caddisflies, and Gammarus spp.
These graphs illustrate that zinc and cadmium are expected to have adverse effects on a number
of different species of both fish and invertebrates in the aquatic community, and that severe
community level effects are likely to exist due to the toxicity of these COPCs.
7.2.1.3 Surface Water Toxicity Testing
Exposure of aquatic test organisms in the laboratory to samples of surface water collected from
the site provides a direct measurement of the response to contaminants present in the water.
EPA has developed standard aquatic toxicity testing procedures for the testing of effluents and
site waters (USEPA, 1988;USEPA, 1989b; and USEPA, 1993c). The standard routine
freshwater aquatic toxicity tests (acute and chronic) use two common laboratory test organisms:
the fathead minnow (Pimephalespromelas) and the cladoceran (water flea) (Ceriodaphnia
dubia) (USEPA, 1993c and USEPA, 1989b).
7-6
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Two studies are available that provide information on the acute toxicity of surface water samples
from French Gulch and the Blue River. The first was completed by Clements (1995) and the
second by Lockheed Martin (2000). These studies are described below.
Clements (1995)
Clements (1995) collected surface water samples from two sampling stations in French Gulch
(FC1 and FC2, as shown on Figure 2-7) and one sampling station from the Blue River (BR4, as
shown on Figure 2-7) in may and October of 1995. Acute (48 hour) toxicity tests were
completed using Ceriodaphnia dubia. For each station, neonates of C. dubia were exposed to
100%, 50%, 25%, 12.5%, 6.25% and 0% of the site sample. Cache la Poudre River water was
used for the controls and diluent water. The results are reported as follows:
Percent Mortality of Ceriodaphnia dubia Exposed to Water Collected from
French Gulch and the Blue River (Clements, 1995)
Station
FC1
FC2
BR4
Date
May
October
May
October
May
October
Percentage Site Surface Water
0%
0
0
0
0
0
0
6.25%
0
0
100
100
0
0
12.5%
0
0
100
100
0
0
25%
0
0
100
100
0
0
50%
0
0
100
100
0
25
100%
15
0
100
100
100
100
As shown, water collected from stations FC2 and BR4 were acutely toxic to C. dubia. Water
from FC2 was acutely toxic at the lowest dilution tested (6.25%). Acute toxicity was also
observed in the samples collected from BR4, with 25% mortality observed in the 50% dilution
from the October sampling event. Based on comparison of the toxicity testing results with
measured dissolved zinc concentrations, the authors concluded that the observed toxicity was
associated with exposures to zinc.
Lockheed Martin (2000)
In March, 2000, USEPA Region 8 field personnel collected surface water samples and
performed 48-hr static renewal toxicity tests using Ceriodaphnia dubia and fathead minnow
(Pimephalespromelas) in accord with the protocols described in USEPA (1993). A summary of
the study and its findings are presented below.
7-7
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Water samples were collected at five stations on French Gulch (FG-1, FG-6A, FG-7, FG-8, and
FG-9) and three locations on the Blue River (BR-1, BR2 and BR-3). In most cases, the site
water was tested at a number of dilutions, using moderately hard reconstituted water (MHRW) as
the diluent. Because waters from FG-1 and BR-3 were expected to be essentially non-toxic,
samples from those sites were not serially diluted and were tested only at 100%. The observed
mortality for these samples and the estimated LC50 values are summarized below:
Sampling
Station
FG-1
FG-6A
FG-7
FG-8
FG-9
BR-1
BR-2
BR-3
Percent Mortality in 100% Site Water
C. dubia
5%
100% (a)
100% (a)
100%
100% (a)
0%
100%(a)
9.5%
P. promelas
5%
100% (a)
100% (a)
100%
100% (a)
0%
100% (a)
0%
Estimated LC50 (% Site Water)
C. dubia
>100%
<1%
2%
9%
2%
>100%
5%
>100%
P. promelas
>100%
<1%
5%
54%
29%
>100%
23%
>100%
(a) 100% lethality observed at concentrations lower than 100%; 100% not tested
As seen, water from the headwaters of French Gulch (FG-1) have low toxicity for both species,
causing less than 5% mortality in 100% site water. However, samples from the portion of
French Gulch that is impacted by mining (FG-6A to FG9) are all severely toxic, with 100%
mortality in both species at site water concentrations of 100% or less. Water in the Blue River
above the confluence with French Gulch (BR-1) does not cause lethality, while water from the
Blue River directly downstream from the confluence (BR-2) is highly toxic. This acute lethality
is reduced but not completely eliminated several miles downstream at BR-3.
Because the waters from French Gulch and the Blue River near the confluence with French
Gulch are so severely toxic, it is not possible to draw conclusions as to whether there are any
site-specific factors in the water which significantly influence the toxicity of the metals
compared to what is expected based on studies in laboratory water. This is because the site
waters must be diluted so extensively to obtain useful dose-response data that the data reflect the
toxicity in the diluent water rather than the site water. However, the data do support the
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
conclusion that the acute toxicity observed in site waters is attributable mainly to zinc. This may
be demonstrated by comparing the concentration of zinc and cadmium in site waters diluted to
the estimated LC50 for site water to LC50 values reported in the Aquatic Toxicity Information
Retrieval (AQUIRE) database for larval fathead minnows and neonatal C. daphnia.
COPC
Zinc
Cadmium
Receptor
Fathead minnow
Ceriodaphnia dubia
Fathead minnow
Ceriodaphnia dubia
Concentration in site waters at
LC50 Dilution (ug/L)
GM
557
83
0.94
0.14
Range
453-706
43-177
0.15-2.0
0.01-0.33
Reported LC50 values
from AQUIRE (ug/L)
GM
577
111
67
71
Range
240-2160
65-153
5-323
17-560
As seen, the geometric mean concentrations of zinc at the LC50 dilutions for fathead minnow
and C. dubia in site water are both quite close to the value expected from published literature
studies that are entered into AQUIRE. In contrast, concentrations of cadmium at the LC50
dilutions are 50-70 fold lower than the expected values for both fathead minnow and C. dubia,
indicating that cadmium is contributing only a small amount (perhaps a few percent) of the acute
toxicity at the LC50 dilution.
Summary of Surface Water Toxicity Testing
Both studies of surface water toxicity from the site provide very clear evidence that surface
waters of French Gulch both North and South Branches downstream of FG-5 to the confluence
with the Blue River are acutely toxic to aquatic life, and that surface water of the Blue River
below the confluence with French Gulch is also toxic at least downstream to BR2 and possibly
beyond. Both studies also support the conclusion that dissolved zinc is the primary source of the
surface water toxicity.
7.2.1.4 Benthic Macroinvertebrate Communities
Benthic invertebrates have been used to monitor effects of heavy metals on streams since the
early 1900's (Carpenter, 1924). Benthic communities are directly exposed to varying water
quality conditions and therefore integrate effects of contaminants over time (Voshell et al.,
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
1989), and the abundance and diversity of benthic macroinvertebrate communities is an index of
the relative degree of degradation from contaminants (Cairns and Pratt, 1993). It should be
noted that concentrations of metals in surface water are often used as the primary index of
habitat degradation, but metal concentrations in sediment may also be important.
Invertebrate community composition is assessed by identification of indicator species
assemblages (Cairns and Pratt, 1993) and the use of benthic community metrics determined
using rapid bioassessment protocols (Plafkin et al. 1989 and Resh and Jackson, 1993). The
rationale for several of the recommended metrics is based on the observation that some
Ephemeroptera, Plecoptera and Tricoptera (EPT) are sensitive to contaminants, whereas
Chironomidae are generally tolerant. These generalizations, however, are based on organism
tolerance of organic enrichment. Therefore, caution is required in application of these indices to
assess effects of contaminants.
Clements (1995) suggests that the abundance and species richness of mayflies are the best
indicators of water quality in metal-polluted streams in the Rocky Mountain ecoregion. Previous
studies have shown that mayflies are sensitive to heavy metals and are usually the first group
eliminated from metal-contaminated streams (Clements, 1994; Clements and Kiffney, 1995).
Clements further concludes that total abundance and species richness of mayflies and abundance
of Heptageniidae (Rhithrogena hageni, Epeorus longimanus, E. deceptivurs and Cinygmula sp.)
are the most reliable indicators of metal pollution. In its simplest form, comparisons of mayfly
abundance (or scarcity) between impacted stations and reference can be the most useful indicator
of stream integrity.
Two studies are available that provide information on the status and health of benthic
invertebrate communities in French Gulch and the Blue River. The first was completed by
Clements in 1995 (Clements, 1995) and the second by the USGS in 1996 (USGS, 1996). These
studies are described below.
Clements (1995)
Clements (1995) sampled the benthic invertebrate community at two stations in French Gulch
and one station in the Blue River as depicted on Figure 2-7. Station FC-1 is a reference station
for French Gulch, Station FC-2 is located downstream of tailings and Station BR4 is located in
the Blue River downstream of its confluence with French Gulch (Figure 2-7). Benthic
invertebrates were quantitatively sampled in May and October 1995 using a Hess sampler from
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
shallow (<0.5 m) riffle areas with three replicates per site. Also measured concurrently during
the study were the dissolved and total concentrations of zinc in surface water samples, the acute
(48 hour) toxicity of surface water samples to Ceriodaphnia dubia and water quality parameters
(conductivity, pH, hardness, alkalinity). The results of the study are summarized in Figures 7-3.
Figure 7-3a shows the relative abundance of dominant taxa including stoneflies, dipterans,
mayflies and caddisflies. Figure 7-3b shows the composition of the benthic invertebrate
community and the total number of individuals and number of taxa.
The mayfly community at the upstream reference location (FC-1) is diverse and considered
healthy. The mayfly community at FC-2, however, is absent. At BR-4, mayflies were abundant
(mean = 205 to 361 per sample) comprising 23 to 50% of the total benthic community. The
mayfly community at BR-4 is, however, less diverse compared to that at FC-1 and is dominated
by two to three species (Clements, 1995).
Previous studies have shown that mayflies are sensitive to heavy metals and are usually the first
group eliminated from metal-contaminated streams (Clements and Kiffney, 1995; Clements,
1994). Therefore, Clements (1995) concludes that the metals observed in surface water have
eliminated the mayfly community at FC-2. Clements (1995) further concludes based on these
results and other studies that the most reliable indicator of adverse effects to the benthic
macroinvertebrate community associated with metals is the total abundance and species richness
of mayflies and the abundance of Heptageniidae (Thithrogena hageni, Epeorus longimanus, E.
deceptivus and Cinygmula sp.). The Heptageniidae mayflies are absent at FC-2 and greatly
reduced at BR4 in comparison to FC-1, suggesting metals-related impacts to the benthic
invertebrate community in French Gulch and the Blue River.
Stoneflies were absent at FC-2 during the May sampling event and showed some indication of
recovery in October. There were, however, fewer individuals and taxa observed at FC-2 and
BR-4 than the reference (FC-1) during both sampling events. Previous studies have shown that
stoneflies are moderately tolerant to low levels of metals and are often one of the earlier groups
to recover. Clements (1995) suggests that these results indicate moderate toxicity associated
with metals.
The orthoclad chironomids were abundant at station BR4 and dominated the sparse benthic
community at station FC2. Previous research has shown that orthoclad chironomids are highly
tolerant of heavy metals and are common in metal-polluted streams. Clements (1994) concludes
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
that the observed dominance of this group is likely to be associated with elevated metal
exposures, and this conclusion is consistent with toxicity testing studies concurrently completed
at the site.
USGS (1996)
Benthic macroinvertebrate samples were collected in August 1996 as part of the USGS NAWQA
program. Samples were collected from two stations. One station is located at the mouth of
French Gulch just upstream from the Blue River (USGS French Gulch sampling station). The
other station is located approximately Vi mile downstream of the mouth of French Gulch on the
Blue River (USGS Blue River sampling station). These sampling stations are shown on Figure
2-7 and are located in between the sampling stations of Clements (1995). The USGS French
Gulch station is located downstream of Clements FC-2 and the USGS Blue River station is
located upstream of Clements BR-4. Benthic macroinvertebrate samples were collected at these
stations using standard NAWQA protocols with collected organisms identified to the lowest
taxonomic level and reported as total number of individuals and total number of taxa.
The available results from this study confirm those of Clements (1995). The USGS observed the
following:
Mayflies and stoneflies are present in each sample, however, only two to three
species are found for each group at the French Gulch Site. The sample collected
from French Gulch contain fewer species and numbers compared to the downstream
sample from the Blue River.
• Caddisflies are present in each sample, however, only one genus is represented.
Fewer numbers are found in the French Gulch station compared to the Blue River
station. The caddisflies present are identified as typically found in streams with
known metals loading
• Chironomids compose 75 percent of the benthic community at the French Gulch
station and 79% of the benthic community at the Blue River station. These
percentages are consistent with those found by Clements (1995) of 62% at FC-2
and 70% at BR-4.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
CDOW(2001)
Benthic invertebrates were collected by CDOW at 3 locations in French Gulch (FG-1, -8 and -9)
and at 4 locations in the Blue River (BR-1, -2, -3, and -5) in May 2000 (Figure 2-1).
Macroinvertebrates were collected by kick netting, preserved in 70% ethyl alcohol and identified
in the laboratory to the lowest practical level. The total number of taxa and total number of
individuals per taxa were determined for each sample by Aquatics Associates of Fort Collins,
Colorado. Three USEPA Rapid Bioassessment Protocol (RBP) metrics were selected by CDOW
to evaluate changes in the aquatic macroinvertebrate community along French Gulch and the
Blue River. These metrics included the number of Ephemeroptera (E), Plecoptera (P) and
Tricoptera (T) taxa, the percent Ephemeroptera (the number of mayflies relative to the total
number of organisms) and the number of Ephemeroptera (mayfly) taxa. The results of the
benthic invertebrate sampling and analyses are summarized in the following table:
Benthic Invertebrate Community Sam
Sample site
French Gulch 1
French Gulch 8
French Gulch 9
Blue River 1
Blue River 2
Blue River 3
Location
ID
FG-1
FG-8
FG-9
BR-1
BR-2
BR-3
Total
number of
taxa
50
30
12
30
26
51
Total
number of
organisms
1,417
812
654
410
318
959
pled by CDOW in May 2001
Number of
EPT taxa
23
17
5
8
14
22
Percent
Ephemeroptera
67.8
39.3
20.5
1.2
39
50
Number of
Ephemeroptera
taxa
7
5
3
3
1
8
As seen, the benthic invertebrate community in the headwaters of French Gulch upstream of the
mine (FG-1) was dominated by EPT (Ephemeroptera, Plecoptera and Tricoptera) taxa (46% of
total taxa). The total number of taxa and number of organisms decreased with distance
downstream in French Gulch as will as the number of EPT taxa and percent Ephemeroptera.
Most of the mayflies in the lower reach of French Gulch (FG-8 and FG-9) were one species
(Baetis bicaudatus).
The benthic invertebrate community of the Blue River upstream of French Gulch was also
dominated by EPT taxa (53%). In the Blue River downstream of French Gulch several mayfly
taxa disappeared, including members of the mayfly family Hepatageniidae and the genus
Rhithrogena sp. which are sensitive to metal concentrations.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
7.2.1.5 Fish Communities
Fish communities have a high degree of natural variability, but can be useful indicators of stream
health (Moyle, 1994; USEPA 1989b). A fish community is defined as a group offish that
inhabit the same area of a stream and interact with each other. The structure of a fish community
is determined by the species present, the relative abundance of the species, the distribution of life
stages and distributions in space and time (Deacon & Mize, 1997). Studies on fish communities
in French Gulch Site and the Blue River are described below.
CDPHE & USEPA (1989)
Preliminary fish electroshocking data are available for French Gulch and the Blue River from
CDPHE and USEPA (CDPHE & USEPA, 1989). CDPHE and USEPA sampled fish from seven
locations in French Gulch (FGO, FG1, FG2, FG4, FG6A, FG8 and FG9) and three sampling
locations in the Blue River (BR1, BR2, BR3) in September of 1989 (CDPHE & USEPA, 1989).
Native Colorado River cutthroat trout (Oncorhynchus clarkif) were captured at FG-0, FG-1, and
FG-2 (Figure 2-1). No fish were observed at FG-4, FG-6A, FG-8, or FG-9. One brown (Salmo
trutta) and one brook (Salvelinus fontinalis) trout were collected from BR-1, while only one
rainbow trout was captured near the BR-2 sampling station. Fish populations recovered near
BR-3 producing 118 brown trout, 26 brook trout and 1 sculpin (CDPHE and USEPA, 1989).
Deacon & Mize (1997)
In 1996, the USGS sampled fish communities throughout the Upper Colorado River Basin as
part of the National Water-Quality Assessment (NAWQA) program (Deacon and Mize, 1997).
Within this sampling program, one sampling station was located on the Blue River (near BR-1)
and one sampling station was located in French Gulch (near FG-9). Two sites were selected as
background conditions and are considered to be unaffected by human activities. Fish were
collected by electroshocking a stream reach 450 to 650 feet in length at wadeable sites and 1,500
to 3,000 feet in length at non-wadeable sites. Fish were identified, measured and then released.
Type, trophic class and relative abundance of native and nonnative fish species were recorded
(Deacon and Mize, 1997).
For the French Gulch sampling station, no fish were collected. For the Blue River sampling
station (near the BR-1 reference upstream of the confluence with French Gulch), two brown trout
and 36 brook trout were collected.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
CDOW(2001)
Fish were collected by CDOW at two locations in French Gulch (FG-1 and FG-9) and two
locations in the Blue River (BR-1 and BR-2). One collection pass was made at each sampling
site using a pulsed, direct current backpack electrofishing unit.
A total of 12 Colorado River cutthroat trout (Oncorhynchus clarkii pleuriticus) were collected
from the upper reach of French Gulch (FG-1). The smallest fish was five inches in length and
the largest was 12.4 inches. The wide range in size indicates a naturally reproducing population.
No fish of any type were collected at FG-9. Only 3-5 fish (brook trout and brown trout) were
collected in the Blue River at BR-1 and BR-2, just upstream and downstream of the French
Gulch confluence, respectively. The CDOW concluded that the numbers of trout in the Blue
River at Breckenridge were depressed in comparison to other Colorado trout streams. For
example, the Eagle River at Redcliff is similar in size to the Blue River in Breckenridge
(although at a lower elevation), and the CDOW collected 49 to 79 brown trout per year in a 279
foot long reach of the Eagle River during 12 annual sampling events from 1990 through 2001.
Summary of Fish Community Surveys
The results of these studies support the following conclusions concerning fish populations and
communities in French Gulch and the Blue River.
• In French Gulch, fish are present upstream of FG-4 but are absent downstream to
the Blue River confluence.
• In the Blue River, fish are present upstream of the confluence with French Gulch
at BR-1, but fish density is reduced at locations downstream of the confluence to
BR-2.
7.2.1.6 Aquatic Habitat Analysis
In 2001, the CDOW completed a study to determine if the existing physical habitat limits the
numbers of adult trout present in the Blue River near the confluence with French Gulch. Brown
trout were chosen as the test species because this fish often inhabits Colorado mountain streams
contaminated by metals.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Stream habitat quality parameters were collected in May of 2001 at five locations in French
Gulch (FG-0, FG-1, FG-5.5, FG-8 and FG-9), four locations in the Blue River (BR-1, BR-2,
BR-3 and BR-5), and two sites on Clear Creek (these were chosen as reference locations). The
CDOW used these data to calculate the percent of stream substrate with usable resting habitat for
adult brown trout at five of these stations. Observations of habitat parameters were made at
multiple points across multiple transects at each sampling location. The distance between each
sample point on across a transect was less than 10% of the total width of the transect. Depths,
water flow velocity at the water column/substrate interface and water flow velocity at 0.6 of the
water column depth was measured at each sample point across the transect. These data were
entered into a computer database and analyzed using RHABSIM (Thomas Paynr and Associates,
Arcata, California). This program determined a weighted usable area of habitat for each transect
for brown trout. The highest value was given to a point where depth was greater than 1.5 feet
and velocity less than 6 inches per second. The lowest value was given to points where depth
was less than six inches and water velocity exceeded 6 inches per second. Intermediate values
were based on the interaction of other depths and velocities. The number of square feet of
weighted usable habitat per thousand feet of stream was calculated by the computer program for
each transect and each sample location. The amount of usable habitat was expressed as a
percentage of the total amount of stream substrate present at each site. These percentages were
used to assess the suitability of habitat at each sample site to support brown trout populations, as
follows:
Physical habitat summary information for French Gulch, Blue River and Clear Creek
Sample Site
French Gulch 1
Blue River 1
Blue River 2
Clear Creek Site 1
Clear Creek Site 2
Stream substrate with usable
habitat for resting adult brown
trout (%)
21
14
16
22
24
Amount of weighted usable resting
habitat for adult brown trout
(ft2/ 1000 linear feet)
5,272
3,046
3,500
6,262
7,569
As seen, the model predicts that about 21% of the French Gulch headwaters (reference) provide
adequate resting habitat for adult brown trout. Similar values (22% to 24%) are obtained at the
two reference locations on Clear Creek. In contrast, the physical habitat at both Blue River
sampling stations (BR-1 and BR-2) is of lower quality for trout (14%-16% resting habitat),
having been impacted as a result of mining activity and channelization (CDOW, personal
communication). Based on the results of the habitat study, CDOW (2001) concluded that habitat
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
(rather than zinc concentrations) in the main limiting factor for trout numbers at the Blue River
sampling stations (BR-1 and BR-2). That is, even if zinc concentrations from French Gulch
were reduced so that there was no potential toxicity at BR-2, the numbers of trout would likely
remain reduced. This is because the habitat present is channelized and does not include cover
and shelter from fast flowing waters necessary to sustain an abundant, self-sustaining trout
population.
7.2.1.7 Weight of Evidence Evaluation for Surface Water
The weight-of-evidence evaluation is composed of multiple lines of evidence as previously
discussed. Each of the elements is examined to compose the overall conclusions. The
individual lines of evidence are summarized in the following text table:
Lines of Evidence for Risk Characterization for Aquatic Receptors and Surface Water
Element
Hazard Quotients
(HQs)
Surface Water
Toxicity Testing
Benthic
Invertebrate
Community
Fish Populations
and Communities
Method
Comparison of toxicity
benchmarks to surface water
concentrations of metals
Acute toxicity testing of surface
water samples from French Gulch
using two species.
Sampling and evaluation of the
"health" of benthic invertebrate
communities in French Gulch and
the Blue River
Sampling offish populations in
French Gulch and the Blue River
Results
Acute toxicity associated primarily with
cadmium and zinc predicted in French
Gulch from the North Branch downstream
to BR-2 in the Blue River.
Acute toxicity observed in North and
South Branches of French Gulch
downstream to BR-2 in the Blue River.
Response of organisms associated with
zinc and cadmium.
Benthic communities are impacted in
French Gulch and the Blue River. Impacts
associated with zinc and cadmium.
Fish are absent in French Gulch
downstream of FG-5. Fish are absent or
limited in the Blue River downstream of
French Gulch downstream to BR-3 .
All of these lines of evidence are strongly consistent with the conclusion that mining-related
chemicals (primarily zinc and cadmium) present in surface waters cause severe toxicity to
aquatic receptors (both fish and benthic organisms) in the middle and lower reaches of French
Gulch, and that the impact of contaminants in French Gulch adversely impact the Blue River
beginning at the confluence and extending several miles downstream.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
7.2.2 Risks from Sediment
Potential risks for aquatic receptors (benthic macroinvertebrates) from COPCs in sediment may
be evaluated by two separate measures:
Calculation of Hazard Quotients that compare sediment concentrations of COPCs
(metals) to sediment toxicity benchmarks.
Calculation of a mean probable effect concentration ratio for each sediment
sampling location to predict the incidence (probability) of observing toxicity in site
sediments.
The individual results are provided as sections with the overall results examined collectively in a
weight-of-evidence evaluation.
7.2.2.1 Hazard Quotients
HQ values for aquatic receptors (benthic invertebrates) due to contact with COPCs in sediment
are calculated according to the following equation:
r
Z_7/O sed
H(2sed ~ — ; ;—
Benchmarksed
where:
Csed = Concentration of COPC in sediment (mg/kg dry weight)
Benchmarksed = Sediment screening benchmark (mg/kg dry weight)
Figure 7-4 (Panels A to L) summarize the estimated HQ values for sediment. As noted
previously (Section 5), only one sample of sediment has been analyzed at each sampling station,
so the results shown in the figures are based on only a single concentration value. As discussed
in Section 6, there are a range of alternative benchmarks available for most of the COPCs, so the
HQs are calculated using both a low-end and a high-end estimate of the TRY. Thus, the height
of the bars shown in the figures represents a range of alternative HQ estimates based on
uncertainty in the true threshold effect level in sediment. Inspection of Figure 7-4 yields the
following main conclusions:
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
• Predicted HQ values for sediment are generally below a level of concern for
chromium, iron, nickel and mercury.
• HQ values for aluminum exceed a level of concern based on the lowest TRV but
not the highest. Also, there is little spatial pattern in aluminum concentrations,
suggesting that mining releases are not substantially influencing aluminum
concentrations in sediment.
• HQ values for arsenic, cadmium, copper, lead, manganese, silver and zinc all
approach or exceed a level of concern (HQ > 1E+00) based on either the low or the
high estimate of the sediment TRV. HQ values well above 1E+00 occur at most
locations in French Gulch and/or the Blue River, and the spatial pattern of values
(high in the North Branch and South Branch of French Gulch and in the Blue River
near the confluence) is consistent with a mining-related release. Highest HQ values
are due to zinc.
These results indicate that contaminants in sediment are likely to have an adverse effect on the
diversity and abundance of the benthic community at nearly all locations along French Gulch
downstream of the W-O complex.
7.2.2.2 Mean Probable Effect Concentration Ratio
As described earlier in Section 6.1.3, MacDonald et al. (2000) found that the toxicity of sediment
samples containing multiple chemicals could be reliably predicted from the mean PEC quotient
(i.e., the average HQ for each metal for which a reliable PEC was available to serve as the TRV).
The equation recommended by McDonald et al. (200) was:
Incidence of Toxicity (%) = 101*^1-0.36X) where x = mean PEC ratio
The following table summarizes the calculated mean PEC values for sediment samples at this
site, along with the predicted incidence of toxicity from the sediment.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Calculation of the Mean PEC Quotient by Sampling Location and
Predicted Incidence of Observing Sediment Toxicity (MacDonald et al., 2000)
Location
BR-Adams
BR-BFG
BR-Dillon
FG-0
FG-1
FG-7
FG-9
FG-9A
TS-3
TS-4
Type
Reference
Blue River
Blue River
Reference
Reference
French Gulch-North Branch
French Gulch
French Gulch
French Gulch-North Branch
French Gulch-North Branch
Mean PEC Quotient
0.64
2.3
1.81
0.91
1.24
12.98
6.9
11.43
25.51
10.75
Predicted Incidence of Toxicity
49%
92%
85%
61%
73%
100%
100%
100%
100%
100%
McDonald et al. (2000) identified a mean PEC quotient of 0.5 as the threshold value for
identifying toxic sediments. As seen above, at this site mean PEC quotients exceed a value of
0.5 at all locations, including reference stations. This suggests that at least some of the PECs
used in the calculations may be too low, since healthy benthic communities do reside in the
reference areas. However, it is clear that, on a relative basis, sediments in French Gulch are
expected to have much higher toxicity than in the reference areas, and these calculations are fully
consistent with direct observations of benthic community health (see Section 7.2.1.4, above).
7.2.2.3 Weight of Evidence Evaluation for Sediment
The following table summarizes the lines of evidence for the risk characterization for sediment.
Lines of Evidence for Screening Risk Characterization for Aquatic Receptors and Sediment
Element
Hazard Quotients (HQs)
Mean PEC Ratio
Method
Comparison of toxicity
benchmarks to sediment
concentrations of COPCs
(metals).
Calculation of mean PEC
quotient for each sampling
location to predict probability of
toxicity.
Results
Toxicity is predicted to be associated
with metals in French Gulch and the
Blue River.
Probability of sediment toxicity at
100% for all French Gulch sampling
locations. Probability lower (predicted
incidence) at Blue River stations.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
As seen, both lines of evidence strongly support the conclusion that COPCs in sediments of
French Gulch are likely to cause toxicity in exposed benthic macroinvertebrates, resulting in
reduction of density and/or diversity of the community.
7.2.3 Risks Based on Fish Tissue Burdens
Figure 7-5 compares the distribution of COPC detected in four tissue types (fillet, liver, kidney
and gonads) and in whole body (calculated from the tissue-specific measurements) to estimated
threshold levels that cause adverse effects in fish. Because TRVs are not available for every
COPC for every tissue type, some parts of the figures are left blank.
As seen, some fish had tissue levels of cadmium, copper, and zinc that were above the
corresponding tissue-specific TRVs. For example, cadmium , copper, and zinc tended to be
above a level of concern in kidneys of trout from BR-2 but not BR-1. These results suggest that
fish that reside in the Blue River downstream of the confluence with French Gulch are exposed
to levels of several metals that may have adverse effects on the ability of the fish to grow and
reproduce.
In considering these results, it is important to remember that fish from BR-2 may have had only
limited exposure to the waters of the Blue River, since they were collected in the vicinity of
inflowing tributaries. Thus, tissue levels of COPCs and risks of adverse effects may be
somewhat higher in fish that do not have access to such refugia.
7.3 Risks to Wildlife
Potential risks to wildlife receptors from exposure to COPCs in surface water, sediment, and/or
food are characterized by the ratio of the dose due to ingestion of COPCS (see Section 5.2) to the
appropriate dose-based TRV (see Section 6.2):
HQ = Dose / TRV
When a receptor may be exposed to the same chemical by more than one pathway, the combined
risks may be estimated by summing the HQ values for each pathway. The sum of the HQ values
is referred to as the Hazard Index (HI). If the HQ or HI value is less than or equal to one, it is
believed that no unacceptable risks will occur in the exposed wildlife receptor. If the value
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
exceeds one, then potential risks may occur, with the expected severity and/or incidence of
effects tending to increase as HQ or HI increases.
The detailed calculation of HQ and HI values for each COPC by ingestion of each medium
(surface water, sediment, aquatic prey items) is presented in Appendix G. The results are
summarized graphically in Figure 7-6 (Panels A to K). In each figure, the upper panel presents
the predicted risks to mink, while the lower panel presents the predicted risk to the Great Blue
Heron. As discussed in Section 6.2, the TRVs selected for use in characterizing potential risks to
wildlife receptors include both the NOAEL and LOAEL. Thus, each risk estimate is presented
as a range that reflects the uncertainty in the true threshold dose that causes adverse effects in the
exposed receptor.
Inspection of Figure 7-6 yields the following main conclusions:
• Predicted HQ and HI values are below a level of concern for both mink and heron
for most COPCs, including arsenic, cadmium, chromium, copper, manganese,
mercury, molybdenum, selenium, and zinc.
• Ingestion of aluminum in sediment is predicted to be of potential concern to the
mink. However, the level of risk is similar in reference areas and mining-impacted
areas, suggesting that the range of NOAEL-LOAEL TRVs for aluminum for
mammals may be somewhat too conservative.
Ingestion of lead in sediment along French Gulch is predicted to be of moderate
concern to the mink (HQ = 1 to 7) and the Great Blue Heron (HQ = 1 to 3). These
values are higher than at reference areas.
• Data on COPCs levels in fish tissue are available only for the Blue River, and only
for some COPCs. Thus, risks to wildlife from ingestion of aquatic prey items is not
well characterized. However, at present, this pathway is not complete, since fish
are not present in the mining-impacted reach French Gulch.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
7.4 Summary of Findings
Risks to Aquatic Receptors from Surface Water
Dissolved metals in surface water in French Gulch downstream of the W-O Mine complex are
acutely toxic to fish and invertebrates. Toxic levels also exist in the Blue River downstream of
the confluence with French Gulch. These conclusions are supported by multiple lines of
evidence, including: a) calculated HQ values, b) direct toxicity testing, c) tissue levels of metals
in fish, and d) site-specific observations on fish and benthic invertebrates populations. Under
current conditions, the metals concentrations in French Gulch surface water downstream of the
W-O mine site prevent the survival of trout populations and other fish species, and restrict the
diversity and abundance of benthic invertebrate communities.
In the absence of any site-specific data to the contrary, target levels of contaminants in surface
water that would be needed to allow fish and benthic communities to return to French Gulch may
be estimated either using the AWQC values for cadmium and zinc, or by choosing alternative
(higher) values that would provide protection to a sub-set of species judged to be of greatest risk
management concern at the site. Inspection of Figure 7-2a and 7-2b allows a preliminary
estimate of the target levels that would be needed to protect species of potential risk management
concern at this site.
Risks to Aquatic Invertebrates from Exposure to Sediment
Concentrations of several COPCs (arsenic, cadmium, copper, lead, manganese, silver and zinc)
all approach or exceed the benchmark levels that have been associated with toxicity to benthic
invertebrates. Predicted risks from sediments are highest in French Gulch, with lower (but still
elevated) risks in the Blue River. Highest HQ values are due to zinc. Three separate studies
indicate that benthic invertebrate communities in French Gulch and the Blue River are adversely
impacted by the metals contamination in surface water and/or sediments, with reductions in
density and diversity of multiple taxa, especially metal-sensitive species .
Risks to Wildlife from Surface Water, Sediment and Fish
Based on modeled estimates of exposure, risks to wildlife (mink, heron) from ingestion of
COPCs in surface water are not likely to be of concern. Ingestion of lead in sediment may be of
concern to both mammals and birds along French Gulch. Ingestion offish from the Blue River
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
near the confluence with French Gulch do not appear to be of concern. Hazards associated with
ingestion offish items from French Gulch might be higher, but at present this pathway cannot be
evaluated and is not complete since no fish are present in French Gulch.
Habitat Quality and Use Attainability
A quantitative habitat quality evaluation performed by CDOW indicated that three streams with
good fish populations (the upstream portion of French Gulch and two reference sites in Clear
Creek) have 21-24% usable resting habitat for brown trout, while the Blue River (stations BR-1
and BR-2) has about 14-16% usable resting habitat. CDOW interpreted these model results to
indicate that habitat in the Blue River near the confluence with French Gulch is sufficiently
altered that even if zinc concentrations were reduced to non-toxic concentrations, the numbers of
trout present in this reach would still remain reduced compared to streams with higher quality
habitat.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
8.0 UNCERTAINTIES
The HQ values presented in this risk assessment should not be interpreted as highly precise
estimates of actual risk of ecological effects. Quantitative evaluation of ecological risks is
limited by uncertainty (lack of knowledge) regarding a number of important data, exposure,
toxicity, and risk factors. This lack of knowledge is usually addressed by making estimates
based on whatever limited data are available, or by making assumptions based on professional
judgement when no reliable data are available. Because of these assumptions and estimates, the
results of the risk calculations are themselves uncertain, and it is important for risk managers and
the public to keep this in mind when interpreting the results of an ERA.
8.1 Uncertainties in the Aquatic Risk Evaluation
8.1.1 Uncertainty Due to Exposure Pathways Omitted
Risks to aquatic receptors (fish, benthic macroinvertebrates) from contaminants in the aquatic
ecosystem were evaluated for direct contact exposure pathways, but not for ingestion of aquatic
prey items. This will lead to an underestimation of risk. The magnitude of this underestimation
is not known, but it is considered likely that the direct contact pathway is more important than
the ingestion pathway and that the magnitude of the error is relatively small.
8.1.2 Uncertainty in Surface Water and Sediment Concentrations
Analyzed samples of surface water and sediment may not fully characterize the spatial and
temporal variability in actual levels of COPCs at the site. For example, short term peaks in
surface water concentrations might occur in French Gulch during times of surface water runoff,
or higher-than-average recharge from groundwater. If these peaks are not well represented in the
set of surface water samples collected to date, risks of acute toxicity may be higher (either more
severe and/or more frequent) than estimated. Conversely, some samples of surface water,
sediment and soils were collected from areas suspected of being maximally impacted by mine
wastes, so some of the data used to characterize risk may tend to be biased high.
In addition, systematic or random errors in sampling or chemical analyses may yield erroneous
data. For example, about 0.7% of the total surface water analyses available were judged to be
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
"outliers". These types of sampling and analysis errors are generally only a small source of
uncertainty, except when risk estimates are driven by the maximum values.
Finally, it is important to recognize that the toxicity of COPCs in surface water to aquatic
receptors depends on the duration of exposure time, and that available TRVs are based on
exposures of 48-96 hours (acute) or for 60-90 days or longer (chronic). Thus, concentration
values used to calculate the HQ values would ideally reflect the average concentration over the
time interval appropriate for the TRY. However, the available data on the concentration of
metals in surface water samples are all "grab" samples that represent instantaneous measures of
concentration. Hence, these values do not reflect either short-term or long-term variability in
concentration over time. Thus, use of grab sample data to calculate acuate and chronic HQ
values is a source of uncertainty, and might either underestimate or overestimate actual risks.
8.1.3 Uncertainty in Aquatic TRVs
Risks to aquatic receptors (fish, benthic organisms) from surface water were characterized
mainly by used of EPA's AWQC values. These values are based on the distribution of toxicity
data for a wide variety of aquatic species, including many that do not reside in the coldwater
steams of the Rocky Mountain west. In addition, some of the AWQC values are based on data
sets that have not been significantly updated in a number of years. Thus, these AWQC values
may not be fully predictive of risks to aquatic receptors that are present at this site. In addition,
most AWQC values are based on data sets that have only limited information of the sensitivities
of reptiles and amphibians compared to fish and invertebrates, so risks to these organisms cannot
be characterize with any certainty.
Likewise, risks to benthic organisms from exposure to sediments are based on a series of non-
site specific studies of sediment toxicity to laboratory test species. However, the toxicity of a
contaminant in sediment may be a complex function of the sediment properties (organic carbon
content, pH, temperature, as well as the chemical and physical state of the contaminant in the
sediment. Thus, studies at other sites may yield sediment benchmarks that are not highly
accurate for this site.
Finally, TRVs or benchmarks are not available for a number of inorganic chemicals that were
detected in surface water and/or sediment (see Tables 4-1 and 4-2). Thus, potential risks from
these chemicals could not be assessed, and the lack of these benchmarks may result in the
underestimation of potential risks.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
8.1.4 Overall Uncertainty in Aquatic Risk Assessment
Despite the numerous sources of uncertainty noted above, there is essentially no uncertainty in
the conclusion that the aquatic ecosystem of French Gulch and the Blue River has been severely
impacted by mining-related chemicals. This conclusion is strongly supported by the agreement
between multiple lines of evidence, including high calculated HQ values for cadmium and zinc,
high toxicity observed in two site-specific toxicity tests, and direct observations of flow or
absent ish and invertebrates communities in French Gulch and the Blue River.
8.2 Uncertainties in the Terrestrial Risk Evaluation
8.2.1 Uncertainty in Indicator Species
Risks to terrestrial receptors were assessed using data for only two of the many species likely to
be present in the French Gulch and Blue River area. The representative species selected for
quantitative evaluation (mink, heron) are intended to represent a range of taxonomic groups and
life history types, and to represent the full range of possible exposures present in the area.
However, in the absence of reliable toxicity data on all species present, it is possible that other
mammalian and avian species might be either more sensitive or less sensitive.
8.2.2 Uncertainty Due to Exposure Pathways Omitted
The exposure pathways selected for quantitative evaluation in the ERA do not include all
potential exposure pathways for terrestrial receptors. In most cases, the pathways not evaluated
(e.g., inhalation and dermal exposure of wildlife to soil, ingestion of sediment and dietary items
by fish) are believed to be minor and to contribute little to overall exposure and risk, so
exclusion of these pathways is not of significant concern. In other cases (e.g., ingestion of soil,
terrestrial food web items, or water from groundwater seeps by wildlife), pathways were not
evaluated because data limitations preclude reliable quantification. Exclusion of these pathways
could result in underestimation of total risk to some receptors, but the magnitude of the
underestimation cannot be quantified.
8.2.3 Selection of Chemicals of Potential Concern (COPCs)
Risks to wildlife were quantified only for a subset of chemicals detected in surface water and
sediment at the site, and exclusion of some chemicals might lead to an underestimation of total
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
risk. This is especially true for chemicals that were assigned to the "qualitative COPC"
category, either because no toxicity data are available (Type 1), or because the analytical
detection limits were too high to reliably detect the chemical if it were present at a level of
concern (Type 2). The magnitude of the underestimation of risk from these excluded chemicals
cannot be quantified, but because risks from the chemicals which were retained are so large
(especially for cadmium and zinc), this uncertainty is not important in the overall risk
characterization for the site.
8.2.4 Uncertainty in Wildlife Exposure Factors and Dose Levels
Ingestion-related exposure assumptions for wildlife are based on literature-derived information
concerning average body sizes, diet compositions, consumption rates, and metabolic rates.
Much of this information is derived from laboratory-reared animals and may not be
representative of wild organisms. Moreover, the actual diet composition of an organism will
vary daily and seasonally. These uncertainties could either under- or overestimate the actual
exposures of wildlife to COPCs in water, sediment, soil, and diet.
Estimates of wildlife exposure due to incidental sediment ingestion conservatively assume that
100% of the metals present are biologically available (100% will be ingested and absorbed in the
gut). This assumption may overestimate chemical doses to wildlife doses, as absorption
efficiencies for most metals are less than 100%.
It is also assumed in the calculation of chemical doses for wildlife that chemicals present in
sediments have the same bioavailability as constituents in laboratory media. This assumption is
conservative because laboratory testing purposely includes dosing regimes (method of
administration and chemical form) to insure a uniform and maximum uptake of chemicals.
8.2.5 Uncertainty in Wildlife Toxicity Benchmarks
Information on the toxic effects on wildlife species is limited for many chemicals.
Consequently, there are varying degrees of uncertainty associated with the wildlife toxicity
reference values. These uncertainties may result in either an over- or underestimate of risk. The
largest source of uncertainty associated with toxicity values is lack of knowledge on how best to
extrapolate available toxicity data across species, endpoint, and durations. In addition, there is
lack of knowledge on how to account for interactions (synergy, antagonism) between different
chemicals when exposure to more than one chemical occurs simultaneously.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
The method used to account for these uncertainties in the derivation of a TRV is, in general,
intended to be conservative. The NOAEL and LOAEL TRVs are estimated based on: 1) a
toxicity value selected from the available scientific literature; and 2) a series of uncertainty
factors that account for extrapolation from the laboratory study result (for the toxicity value) to a
TRV for a specific representative wildlife species. The process results in an inherently
conservative TRV, as the toxicity values selected are the lowest from the reported range.
8.2.6 Overall Uncertainty in Terrestrial Risk Assessment
Based on the numerous uncertainties outlined above, risk estimates for terrestrial receptors
(mink, heron) should not be considered certain. In particular, risks might be higher than
estimated, and the finding that risks from ingestion of surface water and fish are not of apparent
concern should be viewed as tentative.
8.3 Uncertainties in Habitat Assessment
Assessing the suitability and use attainability of any specified reach of aquatic habitat is usually
difficult because habitat usage by fish and other aquatic receptors is a complex function of many
independent variables. This includes, for example, channel width, water depth, water
temperature, water oxygen levels, stream flow velocities, relative amounts of reaches, runs,
pools and riffles, in-stream and bank cover, food availability, substrate suitability for spawning,
interspecies competition, predator pressure (both wildlife and human), and upstream and
downstream conditions. Also note that many of these parameters above are time-variable (e.g.,
flow, temperature, oxygen), and habitat suitability depends not only on the value of each
parameter at any one moment, but on the average and extreme values (minimum and maximum)
over time. While most fish have preferences for optimal values of these variables, most habitats
are not optimal for all (or even any) of the key variables. Rather, habitat usability is determined
by the combination of the many independent factors. At this site, data were collected on a
number of important stream habitat variables, but quantitative assessment of aquatic habitat
usability was based mainly on a consideration of available resting habitat, calculated from flow
velocity and depth data (CDOW 2001). While resting habitat is one key determinant of habitat
quality and a valuable indicator of use attainability, other factors not included in the quantitative
evaluation may also be important. Thus, while there is little uncertainty in the conclusion that
the habitat of the Blue River near French Gulch is not entirely optimal for trout, the exact
population level that would exist in the absence of chemical stressors French Gulch is difficult to
predict.
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Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
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Biomonitoring and Benthic Macroinvertebrates. Chapman and Hall, New York.
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enzyme activities and accumulation of the metal in tissues and organs of rainbow and brown
-------
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
trout (Salmo gairdneri, Richardson and Salmo truttafario L.). Comp Biochem Physiol 62C: 135-
140. (cited in Jarvinen et al.,1999).
Richard, Gigi A. 1997. Evaluation of proposed surface waste remediation alternatives, French
Gulch, Colorado. Submitted to the Northwest Colorado Council of Governments, Silverthorne,
Colorado.
SAIC, 1994. French Gulch Nonpoint Source Project, Final Draft, Unpublished report (cited in
AGS, 1999).
Sample, B.E., D.M. Opresko, and G.W. Suter II. 1996. Toxicological Benchmarks for Wildlife:
1996 Revision. Prepared for the U.S. Department of Energy, Office of Environmental
Management by Lockheed Martin Energy Systems, Inc. managing the Oak Ridge National
Laboratory (ORNL). ORNL publication. ES/ER/TM-86/R3, June.
Stover, B. 1991. Interim Report of Site Characterization, French Gulch NFS Project. State of
Colorado, Mined Land Reclamation Division, Department of Natural Resources (DNR).
Unpublished. Cited in AdrianBrown, 1999c.
Stover, B. 1989. Reconnaissance Report, Mine Drainage Problems and Hydrology of French
Gulch, Breckenridge Mining District. State of Colorado, Mined Land Reclamation Division,
Department of Natural Resources. Unpublished. Cited in AdrianBrown, 1999c.
Syracuse Research Corporation (SRC). 2001. Screening Ecological Risk Assessment for French
Gulch/Wellington-Oro Mine, Breckenridge, Colorado. SRC Final Report, March, 2001.
United States Bureau of Reclamation (USBOR). 1999. ICP Scan of Oro-Wellington Samples.
USBOR Reference # D8240970109-1.
United States Bureau of Reclamation (USBOR). 1997. Geologic Investigations for Conceptual
Evaluation of Surface Waste Cleanup, Wellington-Oro Mine Complex, Breckenridge, Colorado.
USBOR Report, July, 1997.
United States Department of the Interior (USDOI). 1998. Guidelines for Interpretation of the
Biological Effects of Selected Constituents in Biota, Water and Sediment. National Irrigation
Water Quality Program Information Report No. 3. November 1998.
United States Environmental Protection Agency (USEPA). 1988. Short-Term Methods for
Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine
Organisms. Environmental Monitoring Systems Laboratory, Cincinnati, OH.
EPA/600/4-87/028. May.
9-7
-------
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
United States Environmental Protection Agency (USEPA). 1989a. Risk Assessment Guidance
for Superfund, Volume I. Office of Emergency and Remedial Response, Washington, D.C.
United States Environmental Protection Agency (USEPA). 1989b. Short-Term Methods for
Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms.
Environmental Monitoring Systems Laboratory, Cincinnati, OH. EPA/600/4-89/001. March.
United States Environmental Protection Agency (USEPA). 1992a. Framework for Ecological
Risk Assessment. Risk Assessment Forum. EPA/630/R-92/001.
United States Environmental Protection Agency (USEPA). 1992b. Unpublished data.
United States Environmental Protection Agency (USEPA). 1993a. Wildlife Exposure Factors
Handbook. Volume I. U.S. Environmental Protection Agency, Office of Research and
Development. EPA/600/R-93/187a. December 1993.
United States Environmental Protection Agency (USEPA). 1993b. Wildlife Exposure Factors
Handbook. Volume II. U.S. Environmental Protection Agency, Office of Research and
Development. EPA/600/R-93/187a. December 1993.
United States Environmental Protection Agency (USEPA). 1993c Methods for Measuring the
Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms. Fourth
Edition. Office of Research and Development. EPA/600/4-90/027F. August.
United States Environmental Protection Agency (USEPA). 1995. Water Quality Standards;
Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliance - Revision
of Metals Criteria. 40 CRF 131 (60) pp 22228-22237. May 4, 1995.
United States Environmental Protection Agency (USEPA). 1996a. Sampling Activities Report.
Prepared by URS Operating Services, Inc. Contract No. 68-W5-0031, TDD No. 9604-0011.
February 12, 1996.
United States Environmental Protection Agency (USEPA). 1996b. 1995 Updates: Water
Quality Criteria Documents for the Protection of Aquatic Life in Ambient Water. U.S.
Environmental Protection Agency, Office of Water. September, 1996. EPA-820-B-96-001.
United States Environmental Protection Agency (USEPA). 1997. Ecological Risk Assessment
Guidance for Superfund: Process for Designing and Conducting Ecological Risk Assessments.
Interim Final. U.S. Environmental Protection Agency, Environmental response Team (Edison,
NJ). June 5, 1997.
United States Environmental Protection Agency (USEPA). 1998a. Guidelines for Ecological
Risk Assessment. EPA/630/R-95/002F. April, 1998.
-------
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
United States Environmental Protection Agency (USEPA). 1998b. Air and Soil Sampling
Activities Report. Prepared by URS Operating Services, Inc. Contract No. 68-W5-0031, TDD
No. 9604-0011. January 16, 1998.
United States Fish and Wildlife Service (USFWS). 1998. Unpublished data on wet-weight to
dry-weight ratios for fish, benthic invertebrates and aquatic plants collected in Montana. Data
provided in letter from Kemper M. McMaster (USFWS) to Scott Brown (USEPA), dated June
30, 1998.
United States Geological Survey (USGS). 1996. Unpublished data. U.S. Geological Survey
Macroinvertebrate Results from French Gulch and Blue River Sampling Sites. Collected as part
of the Upper Colorado River Basin National Water-Quality Assessment (NAWQA) program.
United States Geological Survey (USGS) and United States Environmental Protection Agency
(USEPA). 1997. Raw data for fish tissue analyses from the Blue River - July 16-17, 1997. EPA
Records Doc #516969.
Voshell, JR, Jr. RJ Layton, and SW Hiner. 1989. Field Techniques for Determining the Effects
of Toxic Substances on Benthic Macroinvertebrates in Rocky-Bottomed Streams, p. 134-155.
In: UM Cowgill and LR Williams (eds.) Aquatic Toxicology and Hazard Assessment. Vol. 12
ASTM STP 1027. American Society for Testing and Materials, Philadelphia, PA.
Witschi H., JA Last. 1987. Handbook of Toxicology, T.J. Haley and W.O. Berndt, Editors;
Washington, D.C., Hemisphere Publishing Corporation, pages 112-156.
Woodling, J. and A. Widmer. 2000. Annual biological assessment of the Eagle Mine Superfund
Site, Eagle County, Colorado. Colorado Department of Natural Resources. Denver, Colo. 79 pp.
Woodling, J., M.S. Gasaway and J.M. Dominguez. 1998. Clear Creek Biological Monitoring
Program. Colorado Department of Natural Resources.
Woodward-Clyde Consultants. 1975. Geohydrologic Investigation, Wellington-Oro Mine
Property, Near Breckenridge, Colorado (as cited in AdrianBrown, 1999b).
WQCC, 1999. Colorado Department of Public Health and the Environment, Water Quality
Control Commission. Regulation No. 33. Classification and Numeric Standards for Upper
Colorado River Basin and North Platte River (Planning Region 12) (5 CCR 1002-33). Effective:
November 30, 1999.
Zelikoff, JT, D Bowser, KS Squibb, and K Frenkel. 1995. Immunotoxicity of low level
cadmium exposure in fish: an alternative animal model for immunotoxicological studies. J
Toxicol Environ Health 45: 235-248.
9-9
-------
Figures
-------
This page intentionally left blank.
-------
r,
-------
:i §
x '-3
w g
-
a
o
U
O
Jin
'o
O
03
•s
Q
STEP1: SCREENING LEVEL
• Site Visit
• Problem Formulation
• Toxicity Evaluation
STEP 2: SCREENING LEVEL
• Exposure Estimate
• Risk Characterization
STEP 3: PROBLEM FORMULATION
Toxicity Evaluation
1
r
Assessment
Endpoints
ir
Conceptual
Model
Questions/Hypotheses
STEP 4: STUDY DESIGN AND DQOs
• Lines of Evidence
• Measurement Endpoints
Work Plan and Sampling and Analysis Plan (SAP)
STEP 5: VERIFICATION OF FIELD
SAMPLING DESIGN
STEP 6: SITE INVESTIGATION
AND DATA ANALYSIS
STEP 7: RISK CHARACTERIZATION
Risk
Assessor
and Risk
Manager
STEPS: RISKMANAGAMENT
Figure 1-2 Eight Step Process Recommended in Ecological Risk Assessment
Guidance for Superfund (ERAGs) (USEPA, 1997)
SMDP = Scientific Management Decision Point
-------
Map not to scale
Dillon
Reservoir
Expanded View of North Branch
KDS/
FG-6A
TS-4
North Branch
Extenuate
Site
Wellington-pro \
Mine -^
McLeod
Tunnel
FG-3
FG-2
South Branch
Mt. Guyot
Figure 2-1
Sampling Location Map
Ecological Risk Assessment
French Gulch Wellington-Oro Mine Site,
Breckenridge, Colorado
-------
Wellington-Oro Mine Complex
Union Mine and Mill
Figure 2-2
Abandoned Mine Sites
Ecological Risk Assessment for the
French Gulch/ Wellington-Oro Mine Site
Breckenridge, Colorado
-------
Floating Dredge Remains
Piles of Alluvial Valley Material
Figure 2-3
Floating Dredge Remains and Removed
Material
Ecological Risk Assessment for the
French Gulch/ Wellington-Oro Mine Site
Breckenridge, Colorado
-------
French Gulch Topography
Blue River Topography
Figure 2-4
Current Topography of French Gulch and the Blue River
Ecological Risk Assessment for
the French Gulch/ Wellington-Oro Mine Site
Breckenridge, Colorado
-------
Figure 2-5
French Gulch
Ecological Risk Assessment for
the French Gulch/ Wellington-Oro Mine Site
Breckenridge, Colorado
-------
Figure 2-6
The Blue River
Ecological Risk Assessment for
the French Gulch/ Wellington-Oro Mine Site
Breckenridge, Colorado
-------
Dillon Reservlor
USGS Blue River
USGS French Gulch
10 km
Figure 2-7 Benthic Macroinvertebrate Sampling Locations
(modifiedfrom Clements, 1995}
-------
Southern Branch \ t] Stream 6
French Gulch
Dead Elk Pond
Dead Elk 1
Dead Elk 2
Flow from
Wellington-Oro
Northern Branch
French Gulch
Figure 3-1
Sediment Sampling Locations
Ecological Risk Assessment for the French Gulch/
Wellington -Oro Mine Site
Breckenridge, Colorado
Source: Adrian Brown 1999b
Figure 3-1 Sediment Sampling Map: ABrownmap, 5/7/2002
-------
Figure 4-1. Ecological Site Conceptual Model
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Ecological Receptors
Sources
Release
Mechanism
Secondary
Source
Medium
Exposure Media
Exposure Route
Birds,
Fish BMI Mammals
Reptiles/
Amphibians
Plants &
Soil Inverts
send:
Tailings
Roaster Fines
Waste Rock
Mine Pool
Wind Erosion
Run Off
Leaching
Suspended
Soil/Dust
,
1 r
L
Surface Soil
Sediment
i '
I I
Surface Water
t
L
Groundwater
,
L
k
Suspended Soil/Dust
Surface Soil
Terrestrial food
chain
Sediment
•
Aquatic food chain
t
Surface Water
j
L
Seeps/Discharges
I
1
->
->
*
Inhalation
X
X
Direct Contact
Ingestion
Ingestion
X
o
o
o
o
o
o
Ingestion
X
X
•
o
Direct Contact
•
X
X
Ingestion
X
X
•
X
Ingestion
X
X
•
o
Direct Contact
•
•
X
o
Ingestion
•
o
Direct Contact
X
o
o
Pathway not complete; no evaluation
Pathway complete, but not selected for evaluation; considered to be minor in comparison with other pathways
Pathway complete and potentially significant; selected for quantitative evaluation
Pathway complete and potentially significant; however, data are lacking to complete quantitative evaluation; qualitative evaluation only
-------
Figure 4-2. COPC Selection Procedure
Ecological Risk Assessment for the French Gulch/Wellington-Oro Min Site
Breckenridge, Colorado
Aquatic Receptors
Does compound have a
TRY?
Type 1
no
Qualitative evaluation
yes
Type 2
no
Is detection frequency >
no
Is Mean DL < TRY?
yes
yes
Is maximum detected
concentration > TRY?
no
yes
COPC (Quantitative
Evaluation)
Not a COPC
Wildlife Receptors
Is comppound a
beneficial nutrient?
no
Does compound have a
TRY?
yes
Type 1
no
Qualitative evaluation
yes
Type 2
no
Is detection frequency >
no
Is Mean DL < TRY?
yes
yes
Is maximum detected
concentration > TRY?
no
yes
COPC (Quantitative
Evaluation)
Not a COPC
COPC Screen Flowchart: COPC Screen
5/7/2002
-------
Figure 6-1
Relationship Between the Mean PEC Quotient and the Incidence of Toxicity in Freshwater Sediments
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
100 -
j£ 80 -
u
*x
r eo H
g
®
13
1
40 -i
20 -j
Source:
MacDonaldetal.,2000
= 0.98
Y*101.48(1-0.36X)
2 3 4
Mean PEC-Q
Figure 6-1 PEC Relationship.wpd
-------
Figure 7-la Summary of Surface Water Hazard Quotients for Aquatic Receptors
ALUMINUM
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a
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Revised Aquatic Risk_SWwo Discharge: Pivot Summary_Graph
5/7/2002
-------
Figure 7-lb Summary of Surface Water Hazard Quotients for Aquatic Receptors
CADMIUM
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a
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5/7/2002
-------
Figure 7-lc Summary of Surface Water Hazard Quotients for Aquatic Receptors
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-------
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-------
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1E+02 -
a
•* 1E+01 -
s
"f 1E+00 -
u
<~ 1E-01 -
1E-02 -
1E-03 -
I
9
O
i
6
•
Ol
6
5
6
1
H
O
|
French Gulch Reference
T
OT *0
H Q5
™
rh
6
5
rh
[T
H
0
i
s
i
6
North Branch French Gulch
6
6
3
6
South Branch
French Gulch
<^
ffl
s
S
s
m
Pi
m
S
pi
m
pi
m
pi
m
Blue River
Revised Aquatic Risk_SWwo Discharge: Pivot Summary_Graph
5/7/2002
-------
Figure 7-lg Summary of Surface Water Hazard Quotients for Aquatic Receptors
SILVER
1E+03 -
1E+02 -
a
* 1E+01 -
jg 1E+00 -
u
<~ 1E-01 -
3
1E-02 -
1E-03 -
HQs Based on Acute AWQC
I
O
6
i
6
1
OJ
6
5
m
6
1
H
8
^
French Gulch Reference
•
rn
H
•
%
•
m
^
rt
•
6
!
<
rt
'
H
|
OJ
i
6
North Branch French Gulch
I
6
5
6
IT)
rh
J
CO
6
South Branch
French Gulch
( 1
6
rh
o
6
French Gulch
' 1
s
m
fi
1
3
m
8
2
Blue River
Reference
s
^
m
r>1
ID
<0
!-• — 1
(N
s
'
rn
s
•
S
i
3
i
1
m
Blue River
HQs Based on Chronic AWQC
1E+03 -
1E+02 -
a
•* 1E+01 -
Q
^ 1E+00 -
•~ 1E-01 -
1E-02 -
1E-03 -
1E-04 -
I
9
O
f
6
I
6
I
6
o
1
French Gulch Reference
•
3
•
$
6
•
®
o
•
6
!
6
•
H
0
S
S
5
o
6
North Branch French Gulch
f
6
I
6
6
I
6
South Branch
French Gulch
I .
6
6
0
6
French Gulch
' I
8
1
m
8
m
Blue River
Reference
* I . ' I *
1
m
8
n
s
m
pi
m
8
m
m
B
pi
m
Blue River
Revised Aquatic Risk_SWwo Discharge: Pivot Summary_Graph
5/7/2002
-------
Figure 7-lh Summary of Surface Water Hazard Quotients for Aquatic Receptors
ZINC
1E+03 -
1E+02 -
a
* 1E+01 -
jg 1E+00 -
u
<~ 1E-01 -
3
1E-02 -
1E-03 -
HQs Based on Acute AWQC
O
6
i
6
s
OJ
6
•
m
6
1
H
8
^
French Gulch Reference
*
*
•
•
m
!
3
^
S
6
^
S
|
s
S
North Branch French Gulch
i 5
!
6
I
6
IT)
rh
CO
6
South Branch
French Gulch
i
1
6
$
O
6
French Gulch
i
s
«
m
1
1
3
m
f
8
i— • — i
2
Blue River
Reference
s
fe
m
n^
m
I
\0
I
ry
s
T
i
rn
I
s
•
S
I
s
i
1
m
Blue River
HQs Based on Chronic AWQC
1E+03 -
1E+02 -
a
•* 1E+01 -
0
^ 1E+00 -
«2 1E-01 -
1E-02 -
1E-03 -
, ! !'
6 6 6 6 I
H
O
^
French Gulch Reference
i
.
•
•
^
f
£
I
™
g
3
i
1
S
g
North Branch French Gulch
!
6
i
6
S
1
i
6
South Branch
French Gulch
I
•
6
1
0
6
French Gulch
5
8
•
Uiams St
A
m
f
s
1 • 1
m
Blue River
Reference
1
ffl
*
8
j
*
^
S
m
pi
m
8
•
m
I
m
i
B
m
Blue River
Revised Aquatic Risk_SWwo Discharge: Pivot Summary_Graph
5/7/2002
-------
Figure 7-2a
Comparison of Cadmium Concentrations with Acute and Chronic Toxicity Values for Fish and Benthic Invertebrates
1E+05 -
1E+04 -
1E+03 -
Sf 1E+02 -
o
«
| 1E+01 -
U
1E+00 -
1E-01 -
IE 02
H —
IB]
\Cf]
^^~
Si.
Fish TRVs
<
i <
o
—————— —|———— ————— ————— ————--•
1
[~i
H (N m T!
O O O O §
H
-d
o
|
French Gulch (Ref)
0
T T • * T
T T 1 * T
* 1 L[
AWQC acute
* 1.23 ug/L
AWQC chronic
0.18 ug/L
mUm^><^°~r-
fe fe £n
North Branch French Gulch
I
; f
1- f\ ft 00
66^6
h h g ^
South Branch
French Gulch
i
z
•
.
i
^ ^ 0 ^. ^ ^ ^
ga\ *-?
^ s
French
Gulch
ij"i •'•' i/
^
m
3 g
3
Blue River (Ref)
•_U-
1
rh yD CM m n
fe s g s S
m
iU"
., p. ^ ^ a
1 s i i 1
ffl
Blue River
_s
=i
[LT1
• [E~|
[F]
^
n~n
I"m
Benthic
Invertebrate
TRVs
- 1E+05
- 1E+04
- 1E+03
- 1E+02 Sf
o
X
- 1E+01 |
U
- 1E+00
- 1E-01
IE 02
FISH TRVs (ug/L)
A
B
C
D
E
F
G
H
I
J
K
L
5,148
20.02
8.62
7.48
6.69
3.22
2.59
1.73
1.45
1.30
1.24
1.08
W. Sucker (MR), acute
Fathead Minnow (larvae), acute
W. sucker (NR), chronic
Rainbow (larvae), acute
Brown (KR), chronic
Colo. Squawfish (larva/juv), acute
Brook (NR), chronic
Bull (adult), acute
Rainbow (adult), chronic
Rainbow (adult), acute
Brook (NR), acute
Brown (NR), acute
LEGEND
1
— Maximum Concentration
> Average Concentration
— Minimum Concentration
BENTFflC TRVs (ug/L)
All measured concentrations and TRVs normalized to a hardness of 60 mg/L.
A
B
C
D
E
F
G
H
I
56,285
1,732
1,323
59
46
18.2
14.5
5.18
0.39
Midge, acute
Tubificid Worm, acute
Mayfly, acute
Snail, acute
Amphipod (Gammarus sp.), acute
Cenodaphnia, acute
Daphma, acute
Snail, chronic
Daphnia, chronic
SW Thermometer Graphs Rev: Cd Graph
5/7/2002
-------
Figure 7-2b
Comparison of Zinc Concentrations with Acute and Chronic Toxicity Values for Fish and Benthic Invertebrates
1E+05
1E+04 -
|1E+03-
s
C
o
1
C
U 1E+02 -
1E+01 -
1E+00
B
D-E
F-G
El
m
^=
^™
^^^~
Fish TRVs
i • •
n
(
' * J
i
•
AWQC acute & chronic 1
[ ^ 76 ug/L [ i
1
ll'
f ^
o .— i
-------
Figure 7-3a
Relative Abundance of Dominant Taxa (Clements, 1995)
Abundance of Dominant Stoneflies
201
rj
*
a is
^H
o
L.
Q, 1"
FCl-May FCl-Oct FC2-May FC2-Oct BR4-May BR4-Oct
D Taenionema
IZapada DSweltza Dlsoperla
Abundance of Dominant Dipterans
I
I
6001
500-
400
300
200-
100-
0-
FCl-May FCl-Oct FC2-May FC2-Oct BR4-May BR4-Oct
D Orthocladiinae
I Tany tarsini D Other Diptera
Abundance of Dominant Mayflies and Caddisflies
400 -i
£i 350-
s;
S
5 250-
|_ 200-
53 150-
S 100
Z 50-
0
FCl-May FCl-Oct FC2-May FC2-Oct BR4-May BR4-Oct
I Baetis • Ephemerellidae D Heptageniidae D Rhyacophillidae • Total number
Benthic Community: Figure 7-3a, 5/7/2002
Page 1 of 1
-------
Figure 7-3b
Composition of Benthic Invertebrate Community (Clements, 1995)
Proportion Abundance of Dominant Groups
100%!
g 5 40%-
20%-
FCl-Mav FCl-Oct FC2-Mav FC2-Oct BR4-Mav BR4-Oct
D Ephemeroptera
D Chironomids
I Plecoptera
I Coleoptera
D Trichoptera
D Non-Insects
Total Number of Individuals and Number of Taxa
FCl-May FCl-Oct FC2-May FC2-Oct BR4-May BR4-Oct
D Number of Individuals
1 Number of Taxa
Benthic Community: Figure 7- 3b, 5/7/2002
Page 1 of 1
-------
Figure 7-4
Summary of Sediment Hazard Quotients for Benthic Invertebrates
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
PANEL A: ALUMINUM
1E+03 -,
1E+02 -
&
W 1E+01 -
"a
| 1E+00 -
1E-01 -
1E-02 -
D-D-
o ^H
6 6
CM CM
French
Gulch
(Ref)
rmn
U U LI
Axxxxxxxxxo
tLnHHP3P3C/3^C/3^^O
North Branch South Branch French Gulch
French Gulch
n.n-D-D-DI
1 | j | 1 I 1 I 1 — I j
D •— i
-------
Figure 7-4
Summary of Sediment Hazard Quotients for Benthic Invertebrates
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
PANEL C: CADMIUM
1E+03 -,
1E+02 -
O>
W 1E+01 -
1E+00 -
1E-01 -
1E-02
.a
French
Gulch (Ref)
North Branch
French Gulch
South Branch French Gulch
-n-
French
Gulch
<;
Blue
River
(Ref)
Blue River
PANEL D: CHROMIUM
1E+03 -i
1E+02 -
Of
M 1E+01 -
-t^
a
o>
=3 1E+00 -
1E-01 -
1E-0
French
Gulch (Ref)
North Branch
French Gulch
South Branch French Gulch
French
Gulch
<
Blue
River
(Ref)
Q
Blue River
LEGEND
HQ based on Low
Benchmark Value
. HQ based on High
Benchmark Value
Range of values shown
represents uncertainty
in the toxicity threshold
Revised Aquatic Risk_Sed: Graph
5/7/2002
Page 2 of 6
-------
Figure 7-4
Summary of Sediment Hazard Quotients for Benthic Invertebrates
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
PANEL E: COPPER
1E+03 -i
1E+02 -
a IE+OI -
1
=3 1E+00 -
1E-01 -
1E-02 -
. . 1 1 —
no
O^t^fl^t'^CN'^fN
French North Branch South Bi
Gulch (Ref) French Gulch
0.0.^.
D
C/3 C/3 C/3 C/3 PL] PL] Lu C^"T3^
Q Q fe
-------
Figure 7-4
Summary of Sediment Hazard Quotients for Benthic Invertebrates
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
PANEL G: LEAD
1E+03 -,
1E+02 -
1E+01 -
=3 1E+00 -
1E-01 -
1E-02
French
Gulch (Ref)
.a
North Branch
French Gulch
South Branch French Gulch
French
Gulch
Blue
River
(Ref)
8
m
3
Blue River
PANEL H: MANGANESE
1E+03 -,
1E+02 -
a IE+OI -
§
'•$ 1E+00 -
1E-01 -
1E-02 -
n n
D"[| 0-0 0-U.g.g.
fcfcfcHHmmcocococococoWWfcg-o
French North Branch South Branch French Gulch French Blue Blue
Gulch (Ref) French Gulch Gulch River
(Ref)
D
5
River
LEGEND
HQ based on Low
Benchmark Value
. HQ based on High
Benchmark Value
Range of values shown
represents uncertainty in
the toxicity threshold
Revised Aquatic Risk_Sed: Graph
5/7/2002
Page 4 of 6
-------
Figure 7-4
Summary of Sediment Hazard Quotients for Benthic Invertebrates
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
PANEL I: MERCURY
1E+03 -,
1E+02 -
a IE+OI -
G
'•3 1E+00 -
1E-01 -
mf!9
n"DTjnT] D'D"
u
OOO^^^^^^^^^^^^OS1
tLHtLHtLnHHP3P3C/3C/3C/3C/3C/3C/3WWtLHrn
Q Q fe
French North Branch South Branch French Gulch French
Gulch (Ref) French Gulch Gulch
n
j.
Blue
River
(Ref)
DD
8 1
P3 r^
Blue River
PANEL J: NICKEL
1E+03 -,
1E+02 -
E 1E+01 -
-W
'•$ 1E+00 -
1E-01 -
1E-02 -
D
0
8
n n
,__,
8
French
Gulch (Ref)
^
8
n
m
"
n
^.
s
North Branch
French Gulch
^H
ffl
(N
ffl
^H
GO
GO
(N
GO
GO
r^
GO
GO
^
GO
GO
^
GO
GO
^0
GO
GO
,__,
GO
Q
n
(N
w
Q
South Branch French Gulch
a\
8
n n
n-
^
6
French
Gulch
»
|S
Blue
River
(Ref)
o
m
Blue
n
c
Q
River
LEGEND
HQ based on Low
Benchmark Value
. HQ based on High
Benchmark Value
Range of values shown
represents uncertainty in
the toxicity threshold
Revised Aquatic Risk_Sed: Graph
5/7/2002
Page 5 of 6
-------
Figure 7-4
Summary of Sediment Hazard Quotients for Benthic Invertebrates
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
PANEL K: SILVER
1E+03 -|
1E+02 -
a IE+OI -
=3 1E+00 -
1E-01 -
1E-02
French
Gulch (Ref)
-0-
.D.
North Branch
French Gulch
South Branch French Gulch
a
French
Gulch
Blue
River
(Ref)
Blue River
PANEL L: ZINC
1E+03 -,
1E+02 -
1E+01 H
i1E+00 -
1E-01 -
1E-02
French
Gulch (Ref)
North Branch
French Gulch
-D-
w
Q
w
Q
South Branch French Gulch
<:
c\
6
French
Gulch
Blue
River
(Ref)
m
Blue River
LEGEND
HQ based on Low
Benchmark Value
. HQ based on High
Benchmark Value
Range of values shown
represents uncertainty in
the toxicity threshold
Revised Aquatic Risk_Sed: Graph
5/7/2002
Page 6 of 6
-------
Figure 7-5
HQ Values Based on COPC Levels in Fish Tissues
ARSENIC
1 T7+09 -,
a IE+OI -
K
| 1E+00 -
« 1E-01 -
0
3
^ 1E-02 -
| 1E-03 -
m(\A -
Fillet
Gonad
Kidney
BR-1
Liver
5
Whole
Body
Fillet
Gonad
Kidney
BR-2
Liver
!-• — 1
Whole
Body
CADMIUM
1E+02 -i
a IE+OI -
B
S 1E+00 -
"S
I 1E'01 "
s
jl 1E-02 -
1 1E-03 -
1E-04 -
i
Fillet
Gonad
Kidney
BR-1
Liver
Whole
Body
i
Fillet
Gonad
Kidney
T
I
Liver
Whole
Body
BR-2
COPPER
1 17^09 -.
6- IE+OI -
a
S 1E+00 -
•-
& 1E-01 -
=
•S 1E-02 -
x
E 1E-03 -
mn/i
i i
i ' !
Fillet Gonad Kidney Liver Whole
Body
BR-1
T " T
11
5 1
x
Fillet Gonad Kidney Liver Whole
Body
BR-2
Fish Risk_Tissue Burden: Summary & Graph
5/7/2002
Page 1 of 2
-------
Figure 7-5
HQ Values Based on COPC Levels in Fish Tissues
LEAD
1E+02 -|
a IE+OI -
K
| 1E+00 -
« 1E-01 -
| 1E-02 -
| 1E-03 -
1E-04 -
! I
Fillet
Gonad
Kidney
BR-1
Liver
Whole
Body
Fillet
Gonad
(
1
Kidney
1 • 1
Liver
Whole
Body
BR-2
ZINC
1E+01 -
a
S 1E+00 -
« 1E-01 -
P 1E-02 -
g 1E-03 -
Fillet
Gonad
s
Kidney
BR-1
I
Liver
Whole
Body
Fillet
Gonad
1
"— i —
Kidney
BR-2
t
Liver
Whole
Body
Fish Risk_Tissue Burden: Summary & Graph
5/7/2002
Page 2 of 2
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL A: ALUMINUM
1 In -I-HO
1E+01 -
§ 1E+00 -
o
=
O' 1E-01 -
•a
03
| 1E-02 -
1E-03 -
IT? nzi
D D
D
>£ "5 -S 3
GO c« £ o
French Gulch
Reference
D D
D
^> ^i 'M 3
GO GO £ 0
North Branch
French Gulch
Mink
D D
^ ^i ^ 3
GO GO £ 0
South Branch
French Gulch
D D
n
>£ "S ^ 3
French Gulch
D D
D
^ •s -a 3
GO GO ^ 0
Blue River
D D
D
^ "S "M 3
GO GO ^ 0
Blue River
Reference
Great Blue Heron
1E+01 -,
1E+00 -
1 1E-01 -
o
=
01 1E-02 -
•a
03
« 1E-03 -
1E-04 -
IE-OS -
n n
u u
g
^ "S ^ 3
French Gulch
Reference
|-| pi
U U
Q
;£• "S •% 3
GO GO j£ O
H
North Branch
French Gulch
D D
>s "u -M 3
South Branch
French Gulch
n n
u u
D
fS "o "M 3
French Gulch
n n
^ "u "M 3
Blue River
n n
u u
£ "8 ^ 3
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL B: ARSENIC
1 In-l-HI
1E+00 -
=
o>
o
=
% 1E-01 "
03
03
1E-02 -
IT? n"?
D D
>£ "5 -si 3
GO en £ o
French Gulch
Reference
n n
U U
^ 1?3 ^ 'erf
[U* QJ W J"j
North Branch
French Gulch
Mink
U U
>£ "S ^ 3
South Branch
French Gulch
n n
u u
>£ "S ^ 3
French Gulch
1 1
D
1 1 - 1
Blue River
n D
U
^ "S "M 3
GO GO ^ 0
Blue River
Reference
Great Blue Heron
1E+01 -,
1E+00 -
"a
o
'•§ 1E-01 -
•a
« 1E-02 -
03
1E-03 -
1E-04 -
D D
^ "S ^ 3
French Gulch
Reference
U U
>£ "S "S 3
GO GO j£ O
H
North Branch
French Gulch
U U
>s "u -M 3
South Branch
French Gulch
D D
fS "o "M 3
French Gulch
D D
U
fS "o "M 3
Blue River
M
'*$• "u -M 3
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL C: CADMIUM
1 In-l-HI
1E+00 -
| 1E-01 -
o
=
O' 1E-02 -
•a
03
| 1E-03 -
1E-04 -
IT? ns
n n
U
^ "o "at 3
GO GO £ O
French Gulch
Reference
n n
D
^> ^i 'M 3
GO GO £ 0
North Branch
French Gulch
Mink
n n
n
^ ^i ^ 3
GO GO £ 0
South Branch
French Gulch
n n
n
>£ "S •% 3
GO GO £ 0
French Gulch
n n
n
£ "S ^ 3
Blue River
n
n
fS "o "M 3
GO GO ^ 0
Blue River
Reference
Great Blue Heron
1E+01 -,
1E+00 -
•g 1E-01 -
.-
| 1E-02 -
O>
1 1E-°3 "
03
W 1E-04 -
IE-OS -
IT? nfi
D D
-
£ "S -S 3
GO GO £ 0
French Gulch
Reference
QDD
>£ "S "S 3
GO GO j£ O
H
North Branch
French Gulch
D D
£ •s -a 3
GO GO £ 0
South Branch
French Gulch
D D
1 I
£ "S -S 3
GO GO g 0
French Gulch
DD
£ 'S -S
GO GO g
a
3
H
Blue River
a
~i
y
^ •«
GO GO
i—i
^
PH
3
H
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL D: CHROMIUM
1 In-l-HI
1E+00 -
•g 1E-01 -
01
§ 1E-02 -
O>
1 1E-°3 -
N
03
W 1E-04 -
IE-OS -
IF nfi
D D
>£ "8 "^ 3
GO GO £ 0
French Gulch
Reference
D D
£ "8 -S 3
GO GO £ 0
North Branch
French Gulch
Mink
£ "8 -S 3
GO GO £ 0
South Branch
French Gulch
D D
£ "8 -S 3
GO GO £ 0
French Gulch
D D
£ -8 -a 3
GO GO £ 0
Blue River
D D
^ "8 "M 3
GO GO ^ 0
Blue River
Reference
Great Blue Heron
1E+01 -,
1 1E+00 -
o
•a
03
« 1E-01 -
1E-02 -
GO
-
"8
GO
1
-
1
French Gulch
Reference
GO
—
"8
GO
E
—
1
North Branch
French Gulch
GO
"8
GO
^
3
South Branch
French
Gulch
GO
—
"8
GO
E
—
3
French Gulch
GO
-
"8
GO
E
-
1
Blue River
GO
-
"8
GO
E
-
1
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL E: COPPER
1E+00 -
=
o>
o
=
% 1E-01 "
03
03
1E-02 -
IF n"?
n n
>£ "5 -S 3
c« en £ o
French Gulch
Reference
n n
>£ "S ^ 3
North Branch
French Gulch
Mink
>£ "S ^ 3
South Branch
French Gulch
n n
w 1 - 1
French Gulch
nn
n
1 1 - 1
Blue River
n n
n
fS "o "M 3
GO GO ^ 0
Blue River
Reference
Great Blue Heron
1E+01 -i
1E+00 -
"3
.-
o
=
01 1E-01 -
•a
03
03
n
1E-02 -
IF n"?
1H-U J
n n
||^3
H
French Gulch
Reference
n n
>£ "S "S 3
GO GO j£ O
H
North Branch
French Gulch
>s "u -M 3
C/D C/D r"^ O
H
South Branch
French Gulch
n n
>s "o "M 3
GO GO '£ O
H
French Gulch
n n
n
^ "u "M 3
C/D C/D r"^ O
H
Blue River
n n
n
>s "u -M 3
C/D C/D r"^ O
H
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL F: LEAD
1E+01 -,
1E+00 -
"3
01
'•§ 1E-01 -
=
•a
os 1E-02 -
03
1E-03 -
IF nzi
D D
n
>£ "5 -S 3
GO en £ o
French Gulch
Reference
pj jjj
D
^ ""$ ^ *crf
[U* qj w J"j
North Branch
French Gulch
Mink
D D
^ ^i ^ 3
GO GO £ 0
South Branch
French Gulch
D D
n
>£ "S ^ 3
French Gulch
n
£ "S ^ 3
Blue River
D D
D
°
^ "S "M 3
GO GO ^ 0
Blue River
Reference
Great Blue Heron
1E+01 -,
1E+00 -
1 1E-01 -
o
=
01 1E-02 -
•a
03
« 1E-03 -
1E-04 -
n n
n
>£ "S •% 3
C/D C/D r"^ O
H
French Gulch
Reference
....a a
a
>£ "S "S 3
GO GO j£ O
H
North Branch
French Gulch
•• • o n
n
>s "u -M 3
GO GO '£ O
H
South Branch
French Gulch
n n
n
>s "o "M 3
GO GO '£ O
H
French Gulch
n n
n
n
fS "o "M 3
C/D C/D r"^ O
H
Blue River
n n
n
n
^ "S -S 3
GO GO j£ O
H
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL G: MANGANESE
1 In-l-HI
1E+00 -
§ 1E-01 -
o
=
O' 1E-02 -
•a
03
| 1E-03 -
1E-04 -
IT? ns
n n
U u
D
;£• "5 •$ 3
GO en £ o
French Gulch
Reference
H D
D
>£ "S ^ 3
North Branch
French Gulch
Mink
D D
>£ "S ^ 3
South Branch
French Gulch
D D
rn
>£ "S ^ 3
French Gulch
n n
D D
£ "S ^ 3
Blue River
n n
U U
D
D
^ "S "M 3
GO GO ^ 0
Blue River
Reference
Great Blue Heron
1E+01 -,
1E+00 -
1 1E-01 -
o
=
01 1E-02 -
•a
03
« 1E-03 -
1E-04 -
IE-OS -
D D
°
||^3
French Gulch
Reference
D
°
^ "S •% 3
GO GO j£ O
H
North Branch
French Gulch
D D
>s "u -M 3
South Branch
French Gulch
D D
D
>s "o "M 3
GO GO '£ O
H
French Gulch
D D
D U
fS "o "M 3
Blue River
D D
D
n
^ "S -S 3
GO GO j£ O
H
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL H: MERCURY
1E+00 -
•g 1E-01 -
01
§ 1E-02 -
O>
1 1E-°3 -
03
W 1E-04 -
IE-OS -
IF nfi
n D
n
>£ "5 -S 3
GO c« £ o
French Gulch
Reference
n n
n
^ ""$ ^ *crf
[U* qj w J"j
North Branch
French Gulch
Mink
^ ^i ^ 3
GO GO £ 0
South Branch
French Gulch
n n
>£ "S ^ 3
French Gulch
n n
£ "S ^ 3
Blue River
n n
fS "o "M 3
GO GO ^ 0
Blue River
Reference
1E+01 -i
1E+00 -
1 1E-01 -
o
=
01 1E-02 -
•a
03
« 1E-03 -
1E-04 -
IE-OS -
Great Blue Heron
n n
n
||^3
French Gulch
Reference
n n
n
>£ "S ^ 3
North Branch
French Gulch
>s "u -M 3
South Branch
French Gulch
n n
fS "o "M 3
French Gulch
n n
fS "o "M 3
Blue River
n n
^ "S -S 3
GO GO j£ O
H
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL I: MOLYBDENUM
1E+01 -,
1E+00 -
=
o>
o
=
% 1E-01 "
03
03
1E-02 -
1E-03 -
|— 1 |— |
GO
-
13
£
%
-
3
0
H
French Gulch
Reference
i— i
r-i
GO
13
1)
GO
%
3
0
H
North Branch
French Gulch
Mink
GO
13
U
GO
%
3
0
H
South Branch
French
Gulch
GO
13
1)
GO
%
3
0
H
French Gulch
GO
-
-
13
1)
GO
%
-
-
0
H
Blue River
GO
-
13
'•§ 1E-01 -
•a
« 1E-02 -
03
1E-03 -
1E-04 -
D D
>£ "S •% 3
GO GO j£ O
H
French Gulch
Reference
^ "S •% 3
GO GO '£ O
H
North Branch
French Gulch
>s "u -M 3
GO GO '£ O
H
South Branch
French Gulch
U U
>s "o "M 3
GO GO '£ O
H
French Gulch
D D
fS "o "M 3
GO GO j£ O
H
Blue River
D D
^ "S -S 3
GO GO '£ O
H
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL J: SELENIUM
1E+00 -
=
o>
o
=
% 1E-01 "
03
03
1E-02 -
1 In H"?
D D
>£ "5 -S 3
GO en £ o
French Gulch
Reference
D D
^ ^i 'M 3
GO GO £ 0
North Branch
French Gulch
Mink
>£ "S ^ 3
South Branch
French Gulch
D D
>£ "S •% 3
GO GO ^ 0
French Gulch
D D
^ -g -a 3
GO GO ^ 0
Blue River
D D
^ "S "M 3
GO GO ^ 0
Blue River
Reference
Great Blue Heron
1E+01 -i
1E+00 -
"a
o
'•§ 1E-01 -
o-
•a
« 1E-02 -
03
1E-03 -
1E-04 -
D D
||^3
French Gulch
Reference
^ "S -S 3
GO GO j£ O
H
North Branch
French Gulch
>s "u -M 3
South Branch
French Gulch
D D
^ "o "M 3
French Gulch
D D
^ "u "M 3
Blue River
D D
^ "S -S 3
GO GO j£ O
H
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Figure 7-6
Summary of Wildlife Hazard Quotients
PANEL K: ZINC
1E+01 -,
1E+00 -
•g 1E-01 -
01
§ 1E-02 -
O>
1 1E-°3 -
03
W 1E-04 -
IE-OS -
IT? nfi
n n
u i— i
PI
>£ "5 -S 3
GO c« £ o
French Gulch
Reference
H D
1=1
^ ^i 'M 3
GO GO £ 0
North Branch
French Gulch
Mink
D D
rj
^ "S ^ 3
South Branch
French Gulch
D D
n
w 1 - 1
French Gulch
n
n 0
LJ
£ -g -a 3
GO GO £ 0
Blue River
n H
°
^ "S "M 3
GO GO ^ 0
Blue River
Reference
Great Blue Heron
1E+01 -,
1E+00 -
1 1E-01 -
o
=
01 1E-02 -
•a
03
« 1E-03 -
1E-04 -
IE-OS -
D D
D
||^3
French Gulch
Reference
n n D
U
>£ "S •% 3
GO GO j£ O
H
North Branch
French Gulch
D D
>s "u -M 3
South Branch
French Gulch
D D
D
>£ "S ^ 3
French Gulch
DDD
D
£ "S ^ 3
Blue River
0°°
D
^ "S -S 3
GO GO '£ O
H
Blue River
Reference
LEGEND
HQ based on NOAEL TRY
HQ based on LOAEL TRY
Range of values shown represents
uncertainty in the toxicity
threshold
Wildlife HQ Summary: HQ Summary
5/7/2002
-------
Tables
-------
This page intentionally left blank.
-------
Table 2-1
Timeline of Mining Activities in the French Gulch Area
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Date
1859
1880's-1930's
1889
1890
1900's-1940's
1907
1908
1912
1920's
1919-1921
1927
1928
1929
1930's-1940's
1940's
Late 1940's-
early 1950's
1940's-
early 1970's
Mid 1950's-
early 1960's
1950's-1960's
Early 1960's
1961
1962
1962
Early 1963
1968-
early 1970's
1970
Early 1970's
Early 1970's
1980's
Mid-1980's
1989
1991
March, 1992
May, 1993
Fall 1993
Fall 1994
Fall, 1998
Summary of Activity
Placer Mining in French Creek begins including small gravity separation operations, hydraulic mining
and booming.
Wellington mine and Oro mine operations (W-O complex) at peak production of lead, zinc, copper, silver, and
gold
Country Boy mine begins mining zinc, lead, silver, and gold.
Detroit Mine upstream from W-O complex begins lode mining of gold, lead, and silver.
Dredging operations in French Creek at its peak with a total of 9 dredges were in operation.
Wellington and Oro mines consolidated.
A 100-ton gravity mill constructed at the W-O complex to produce lead, zinc, and pyrite concentrates.
A 50-ton roaster and magnetic separation plant constructed to remove iron and sulfur from zinc byproducts.
Roaster fines and mill tailings discarded on site.
Over 12 miles of tunnels, adits, drifts, slopes, and crosscuts compose the W-O complex.
300-350 gallons/minute pumped from mines to maintain water levels below mining activities.
The 50-ton roaster and magnetic separation plant replaced with more economical flotation mill.
The 8th level of the Oro Shaft, the deepest level of the W-O complex, developed.
Production of lead, zinc and pyrite concentrates ceased from the gravity mill.
Minimal mining activity at W-O complex.
B&B Mines and several affiliated companies acquire the W-O properties.
W-O complex leased and mined at depths requiring the removal of 250 feet of water from the mine.
Sporadic mining and mill operations at W-O complex by lessees of B&B Mines.
Former partners of Mr. Davenport, Horn and Burger, acquire the W-O lease and mine the site.
Gravity and flotation mill tailings and roaster fines buried by waste rock and tailings from mining operations.
Some tailings discarded into French Creek.
Consolidated Pamett/Wellington Mine Association extensively mine the W-O complex.
The Oro Shaft dewatered to decrease water levels by 200 feet (350 gallons/minute), in order to develop and
maintain a new 230 foot level.
The old 4th level of Wellington workings intersected causing a mine blowout and flood.
Fire destroyed the W-O mill.
Consolidated Pamett/Wellington Mine Association rebuilt the mill handling up to 1 50 tons of ore/day. North and
south mill tailing ponds and a significant portion of the waste rock pile develop.
Gilmore/Wellington Mining Company lease and mine the W-O complex producing 500 tons of ore/month.
Ore production ceases.
Gilmore develops drifts and crosscuts from Oro's 5th level requiring dewatering of 600-1000 gallons/minute to
lower the water level to the 6th Oro level and 500-600 gallons/minute to maintain water levels.
Gilmore is bankrupt.
The only mining related activities involve B&B issuing exploration leases for W-O complex.
The City of Breckenridge reclaim a section of the Blue River.
Colorado Department of Public Health and Environment (CDPHE) and Colorado Division of Minerals and
Geology (CDMG) observe trout fingerling kills in the Blue River below French Creek and propose a Non-Point
Source (NPS) 319 project in French Gulch.
CDMG installs groundwater monitoring wells near the #3 Mine shaft and mill tailings in the W-O Mine Complex
area.
CDMG grout seals #3 Mine shaft under the hypothesis that the #3 Mine shaft was the point source of
contamination into French Creek. A relief well was installed to characterize water quality and subsurface flows.
Metal concentrations in French Creek did not significantly decrease indicating other sources and groundwater
pathways.
CDMG diverted French Creek around the mill tailings south of French Gulch Road attempting to reroute spring
runoffs around the tailings and reduce ponding and the level of the groundwater table in the south mill tailings
area. Ponding was eliminated, however, groundwater levels were not significantly lowered. No noticeable
improvements in surface water quality were observed.
CDMG drills additional ground-water monitoring wells including the 11-10 Fault well (MW-14).
More groundwater wells were installed to determine that mine water with elevated concentrations of metals was
seeping into the bedrock and alluvium through fractures, subsidence zones above mine slopes, and possibly faults.
Roaster fines moved to nearby repository and capped.
Source: AGS (1999)
Table 2-1 Timeline_Mining.wpd
-------
Table 2-2
Benthic Invertebrate Species Identified from French Gulch and the Blue River
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Order
Ephemeroptera
(mayflies)
Plecoptera
(stoneflies)
Trichoptera
(caddisflies)
Coleoptera
(beetles)
Diptera
(flies)
Oligochaeta
Turbellaria
Nematoda
Hydrachnidia
Family
Baetidae
Ephemerellidae
Heptageniidae
Siphlonuridae
Chloroperlidae
Leuctridae
Nemouridae
Perlodidae
Pteronarcyidae
Taeniopterygidae
Glo s so somatidae
Rhyacophilidae
Elmidae
Dytiscidae
Chironomidae
Chironomidae
Orthocladiinae
Chironomidae
Tanytarsini
Empididae
Muscidae
Simuliidae
Unspecified
Unspecified
Unspecified
Unspecified
Genus/Species
Unspecified
Baetis sp.
Baetis bicaudatus
Baetis tricaudatus
Acentrella turbida
Unspecified
Drunella doddsi
Serratella tibialis
Unspecified
Cinygmula sp.
Epeorus albertae
Epeorus longimanus
Siphlonurus sp.
Unspecified
Suwallia sp.
Swwallia sp. (Adult)
Sweltsa sp.
Paraleuctra sp.
Unspecified
Zapada sp.
Unspecified
Cultus sp.
hoperla sp.
Skwala sp.
Unspecified
Pteronarcella sp.
Taenionema sp.
Glossosoma sp.
Unspecified
Rhyacophilia acropedes
Rhyacophilia alberta
Rhyacophilia angelita
Heterlimnius corpulentus
(Adult)
Heterlimnius sp.
Unspecified
Unspecified
Unspecified - larval
Unspecified - pupae
Unspecified - adult
Unspecified
Unspecified
Clinocera sp.
Unspecified
Unspecified
Unspecified
Unspecified
Unspecified
Unspecified
USGS (1996)
August
FG
8
85
1
4
1
1
1
1
4
2
1
2
1
1
511
43
29
37
4
1
28
2
16
BR
457
16
1650
1
25
32
97
18
57
5
1
2
1
103
2
16
1
5
18
1
4568
19
2
6
1
129
19
1
1
Clements (1995)
May
FC-1
X
X
X
X
X
X
X
X
X
X
X
X
FC-2
X
BR-4
X
X
X
X
X
X
X
X
X
X
Clements (1995)
October
FC-1
X
X
X
X
X
X
X
X
X
X
X
X
FC-2
X
X
BR-4
X
X
X
X
X
X
X
X
Table 2-2 Benthic Species.wpd
-------
Table 2-3
Fish Species Identified from French Gulch and the Blue River
Number of Individuals Collected by Station
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Common Name
Colorado Cutthroat Trout
(Oncorhynchus clarki
pleuriticus )
Brown trout
(Salmo tmtta)
Brook trout
(Salvelinus fontinalis)
Sculpin
(Coitus bairdi)
Rainbow trout
(Onchorhychus mykiss)
Sampling Location
FGO
4b
Ob
Ob
ob
ob
FG1
2
12d
Ob
Ob
ob
ob
FG2
5b
Ob
Ob
ob
ob
FG4
Ob
ob
ob
ob
ob
FG6A
Ob
ob
ob
ob
ob
FG8
Ob
ob
ob
ob
ob
FG9
Qa,d
Oa'd
Qa,d
Qa,d
Oa,d
BR1
Oa
2a
lb
6C
2d
36a
lb
ld
Oa
Oa
BR2
Ob
Ob
6C
3d
Ob
6C
2d
Ob
lb
BR3
Ob
118b
26 b
lb
Ob
a Deacon and Mize (1997); Table 2
"CDPHE & USEPA (1989); Table 6
CUSGS&USEPA(1997)
d CDOW(2001)
Table 2-3 Fish Species.wpd
-------
Table 2-4
Birds Found in Summit County, Colorado
Ecological Risk Assessment of the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Common Name
American Coot
American Crow
American Dipper
American Kestrel
American Pipit
American Redstart7
American Robin
American Tree Sparrow
American Wigeon
Bald Eagle2'3-6-7
Band-tailed Pigeon
Barn Swallow
Barrow's Goldeneye1'6'7
Belted Kingfisher
Black-and-white Warbler
Black-billed Magpie
Black-capped Chickadee
Black-crowned Night-heron7
Black-headed Grosbeak
Blue Grouse
Blue Jay
Blue-winged Teal
Bohemian Waxwing
Boreal Owl7
Brewer's Blackbird
Broad-tailed Hummingbird
Brown Creeper
Brown-headed Cowbird
California Gull
Calliope Hummingbird
Cassin's Finch
Chipping Sparrow
Cinnamon Teal
Clark's Nutcracker
Cliff Swallow
Common Goldeneye
Common Crackle
Common Merganser
Common Nighthawk
Common Raven
Common Redpoll
Common Snipe
Cooper's Hawk
Cordilleran Flycatcher
Curve-billed Thrasher
Dark-eyed Junco
Dusky Flycatcher
Eared Grebe7
European Starling
Genus/Species
Fulica americana
Corvus brachyrhynchos
Cinclus mexicanus
Falco sparverius
Anihus rubescens
Setophaga mticilla
Turdus migratorius
Spizella arborea
Anas americana
Haliaeetus leucocephalus
Columbafasciata
Hirundo rustica
Bucephala islandica
Ceryle alcyon
Mniotilta varia
Pica pica
Parus atricapillus
Nycticorax nycticorax
Pheucticus melanocephalus
Dendragapus obscurus
Cyanocitta cristata
Anas discors
Bombycilla garrulus
Aegolius funereus
Euphagus cyanocephalus
Selasphorus platycercus
Certhia americana
Molothrus ater
Lams californicus
Stellula calliope
Carpodacus cassinii
Spizella passerina
Anas cyanoptera
Nucifraga columbiana
Hirundo pyrrhonota
Bucephala clangula
Quiscalus quisicula
Mergus merganser
Chordeiles minor
Corvus cor ax
Carduelis flammea
Gallinago gallinago
Accipiter cooperii
Empidonax occidentalis
Toxostoma curvirostre
Junco hyemalis
Empidonax oberholseri
Podiceps nigricollis
Sturnus vulgaris
Table 2-4 Bird Species.wpd
Page Iof4
-------
Table 2-4 (continued)
Birds Found in Summit County, Colorado
Ecological Risk Assessment of the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Common Name
Evening Grosbeak
Flammulated Owl6'8
Fox Sparrow
Franklin's Gull8
Gadwall
Golden-crowned Kinglet
Golden-crowned Sparrow
Golden Eagle
Gray Jay
Great Blue Heron7
Great Horned Owl
Greater Yellowlegs
Green-tailed Towhee
Green-winged Teal
Hairy Woodpecker
Hammond's Flycatcher
Hermit Thrush
Horned Lark6
House Finch
House Sparrow
House Wren
Killdeer
Lapland Longspur
Lark Bunting6'8
Lazuli Bunting
Lesser Sandhill Crane
Lesser Scaup
Lewis' Woodpecker
Lincoln's Sparrow
Loggerhead Shrike1'7
MacGillivray's Warbler
Mallard
Merlin7
Mountain Bluebird
Mountain Chickadee
Mourning Dove
Nashville Warbler
Northern Flicker
Northern Goshawk7
Northern Harrier7
Northern Pintail
Northern Pygmy -owl
Northern Saw-whet Owl
Northern Shoveler
Northern Shrike
Olive-sided Flycatcher
Orange-crowned Warbler
Osprey7
Palm Warbler
Genus/Species
Coccothraustes vespertinus
Otus flammeolus
Passerella iliaca schistacea
Lams pipixcan
Anas strepera
Regulus satrapa
Zonotrichia atricapilla
Aquila chrysaetos
Perisoreus canadensis
Ardea herodias
Bubo virginianus
Tringa melanoleuca
Pipilo chlomms
Anas crecca
Picoides villosus
Empidonax hammondii
Catharus guttatus
Eremophila alpestris
Carpodacus mexicanus
Passer domesticus
Troglodytes aedon
Charadrius vociferus
Calcarius lapponicus
Calamospiza melanocorys
Passerina amoena
Grus canadensis canadensis
Aythya affmis
Melanerpes lewis
Melospiza lincolnii
Lanius ludovicianus
Oporornis tolmiei
Anas platyrhynchos
Falco columbarius
Sialia currucoides
Parus gambeli
Zenaida macroura
Vermivora ruficapilla
Colaptes auratus
Accipiter gentilis
Circus cyaneus
Anas acuta
Glaucidium gnoma
Aegolius acadicus
Anas clypeata
Lanius excubitor
Contopus borealis
Vermivora celata
Pandion haliaetus
Dendroica palmarum
Table 2-4 Bird Species.wpd
Page 2 of 4
-------
Table 2-4 (continued)
Birds Found in Summit County, Colorado
Ecological Risk Assessment of the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Common Name
Pied-billed Grebe
Peregrine Falcon1'6
Pine Grosbeak
Pine Siskin
Pinyon Jay
Prairie Falcon8
Pygmy Nuthatch
Red-breasted Nuthatch
Red Crossbill
Redhead
Red-headed Woodpecker6'7
Red-naped Sapsucker
Red-tailed Hawk
Red-winged Blackbird
Ring-billed Gull7
Ring-necked Duck
Rock Dove
Rock Wren
Rose-breasted Grosbeak
Rosy Finch
Rough-legged Hawk
Ruby -crowned Kinglet
Ruddy Duck
Rufous Hummingbird6
Sage Grouse1'6
Sage Thrasher
Savannah Sparrow
Sharp-shinned Hawk
Snowy Owl
Solitary Sandpiper
Song Sparrow
Sora
Spotted Owl2'3'6'7
Spotted Sandpiper
Steller's Jay
Swainson's Hawk6'8
Swainson's Thrush
Tennessee Warbler
Three-toed Woodpecker6
Townsend's Solitaire
Townsend's Warbler
Tree Swallow
Varied Thrush
Veery
Vesper Sparrow
Violet-green Swallow
Warbling Vireo
Western Kingbird
Western Meadowlark
Genus/Species
Podilymbus podiceps
Falco peregrinus
Pinicola enucleator
Car due Us pinus
Gymnorhinus cyanocephalus
Falco mexicanus
Sitta pygmaea
Sitta canadensis
Loxia curvirostra
Aythya americana
Melanerpes erythrocephalus
Sphyrapicus nuchalis
Buteo jamaicensis
Agelaius phoeniceus
Lams delawrensis
Aythya collaris
Columba livia
Salpinctes obsoletus
Pheucticus ludovicianus
Leucosticte arctoa
Buteo lagopus
Regulus calendula
Oxyura jamaicensis
Selasphorous rufus
Centrocercus urophasianus
Oreoscoptes montanus
Passerculus sandwichensis
Accipiter striatus
Nyctea scandiaca
Tringa solitaria
Melospiza melodia
Porzana Carolina
Strix occidentalis
Actitis macularia
Cyanocitta stelleri
Buteo swainsoni
Catharus ustulatus
Vermivora peregrina
Picoides tridactylus
Myadestes townsendi
Dendroica townsendi
Tachycineta bicolor
Ixoreus naevius
Catharus fuscescens
Pooecetes gramineus
Tachycineta thalassina
Vireo gilvus
Tyrannus verticalis
Sturnella neglecta
Table 2-4 Bird Species.wpd
Page 3 of 4
-------
Table 2-4 (continued)
Birds Found in Summit County, Colorado
Ecological Risk Assessment of the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Common Name
Western Tanager
Western Wood-pewee
White-breasted Nuthatch
White-crowned Sparrow
Whooping Crane4'5'6'7
Willet7
Willow Flycatcher
Wilson's Warbler
Wood Duck
Yellow-rumped Warbler
Yellow Warbler
Genus/Species
Piranga ludoviciana
Contopus sordidulus
Sitta carolinensis
Zonotrichia leucophrys
Grus americana
Catoptrophorus semipalmatus
Empidonax traillii
Wilsonia pusilla
Aix sponsa
Dendroica coronata
Dendroica petechia
1 Listed as a Species of State Special Concern
2 Listed as a State Threatened Species
3 Listed as Federally Threatened
4 Listed as a State Endangered Species
5 Listed as Federally Endangered
6 Listed as a Declining Species by the CDOW
7 Listed as an Imperiled Species by the Colorado Natural Heritage Program
8 Listed on the National Audubon Society 's State Watchlist
Source: Andrews andRighter (1992), CDOW (1999), Audubon Society (2000), NDIS
(1999)
Table 2-4 Bird Species.wpd
Page 4 of 4
-------
Table 2-5
Mammals Found in Summit County, Colorado
Ecological Risk Assessment for the French Gulch/Wellington-Oro Site
Breckenridge, Colorado
Common Name
Abert's Squirrel
American Badger
American Beaver
American Elk
American Marten
American Pika
Big Brown Bat
Bighorn Sheep
Black Bear
Bobcat
Bushy-tailed Woodrat3
Common Muskrat
Common Porcupine
Coyote
Deer Mouse
Dwarf Shrew3
Golden-mantled Ground Squirrel3
Heather Vole
Hoary Bat
House Mouse
Least Chipmunk3
Little Brown Myotis
Long-legged Myotis
Long-tailed Vole
Long-tailed Weasel
Lynx2'3'4
Masked Shrew
Meadow Vole3
Mink
Montane Shrew
Montane Vole
Moose
Mountain Cottontail
Mountain Goat
Mountain Lion
Mule Deer
Northern Pocket Gopher3
Northern River Otter1'2
Pine Squirrel
Pronghorn
Pygmy Shrew
Raccoon
Red Fox
Ringtail
Short-tailed Weasel
Silver-haired Bat
Genus/Species
Sciurus aberti
Taxidea taxus
Castor canadensis
Cervus elaphus
Martes americana
Ochotona princeps
Eptesicus fuscus
Ovis canadensis
Ursus americanus
Lynx rufus
Neotoma cinerea rupicola
Ondatra zibethicus
Erethizon dorsatum
Canis latrans
Peromyscus maniculatus
Sorex nanus
Spermophilus lateralis
Phenacomys intermedius
Lasiurus cinereus
Mus musculus
Tamias minimus
Myotis lucifugus
Myotis volans
Microtus longicaudus
Mustela frenata
Lynx lynx canadensis
Sorex cinereus
Microtus pennsylvanicus
Mustela vison
Sorex monticolus
Microtus montanus
A Ices alces shirasi
Sylvilagus nuttallii
Oreamnos americanus
Felis concolor
Odocoileus hemionus
Thomomys talpoides
Lutra canadensis
Tamiasciurus hudsonicus
Antilocapra americana
Sorex hoyi
Procyon lotor
Vulpes vulpes
Bassariscus astutus
Mustela erminea
Lasionycteris noctivagans
Table 2-5 Mammal Species.wpd
Page Iof2
-------
Table 2-5 (continued)
Mammals Found in Summit County, Colorado
Ecological Risk Assessment for the French Gulch/Wellington-Oro Site
Breckenridge, Colorado
Common Name
Snowshoe Hare
Southern Red-backed Vole
Striped Skunk
Townsend's Big-eared Bat1'3
Uinta Chipmunk
Water Shrew
Western Jumping Mouse
White-tailed Jackrabbit
Wyoming Ground Squirrel
Yellow-bellied Marmot
Genus/Species
Lepus americanus
Clethrionomys gapperi
Mephitus mephitus
Plecotus townsendii pallescens
Tamias umbrinus
Sorex palustris
Zapus princeps
Lepus townsendii
Spermophilus elegans
Marmota flaviventris
1 Listed as a Declining Species by the CDOW
2 Listed as a State Endangered Species
3 Listed as an Imperiled Species by the Colorado Natural Heritage Program Service
4 Listed as a Federal Threatened Species
Source: Fitzgerald et al. (1994), NDIS (1999), CDOW (1999)
Table 2-5 Mammal Species.wpd
Page 2 of 2
-------
Table 2-6
Timeline of Sampling Activities in the French Gulch Area
Baseline Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Date
1934
1972
1975
1986-
1994
1989
1989-
1990
1991
1992-
1996
1993
1995
1995
1995
1996-
1997
1996-
1997
1997
1997
1997
1997
1997
1997
1998
1998
1999
Reference
Levering (1934)
Moran and Wentz
(1974)
Woodward-Clyde
Consultants (1975)
Breckenridge
Sanitation District
(BSD) (BSD, 1997)
USBOR (Stover,
1989)
CDPHE and USEPA
(CDPHE,
unpublished)
USBOR (Stover,
1991)
CDPHE and USEPA
(CDPHE,
unpublished)
USBOM (AGS,
1999)
Morrissey
(Morrissey, 1995).
Clements (Clements,
1995)
Ecology and
Environment Inc.
(E&E, 1995)
Radon Abatement
Services (RAS, 1996;
RAS, 1997)
CDPHE (CDPHE,
1996 and 1997)
USGS
NWCCG
USGS (Kimball,
1997).
USGS (Kimball et
al, 1997; Kimball et
al. 1999)).
Radon Abatement
Services (RAS,
1997).
USBOR (USBOR,
1997)
American Geological
Services (AGS,
1998)
URS (USEPA,
1996a).
AdrianBrown
(Adrian Brown,
1999)
Summary of Activity
Details the geology and mineralogy of the Breckenridge mining district including the
W-O Mining Complex
Provides results of surface water samples from French Gulch and the Blue River
analyzed for zinc, iron, manganese, lead, and other metal concentrations.
Evaluates the relationship between groundwater in abandoned mine workings and the
surface water of the Blue River catchment evaluated.
Provides the results of ground water and Blue River surface water samples near the
confluence with French Gulch.
Identifies and evaluates acid mine drainage issued from collapsed and intact portals
from the W-O Mine flowing adjacent to French Gulch Road.
Provides results of the analyses of surface water samples and acute toxicity tests. The
results identify the W-O Mine Complex as the source of metal concentrations in French
Gulch and Blue River surface water
Maps mine waste areas and provides results of samples from monitoring wells in the
W-O Mine Complex area
Provides results of analyses of surface water samples from French Gulch and the Blue
River.
Provides results of geophysical surveys searching for subsurface locations of the 11-10
fault zone
Characterizes groundwater chemistry and flow in the W-O Mine area
Provides results of sampling of aquatic macroinvertebrate communities from French
Gulch and the Blue River. Conduct aquatic toxicity tests from the same sampling sites
during high and low flow conditions.
Preliminary assessment to identify potentially hazardous waste at the W-O Mine and to
assess threats to human health and the environment
Provides baseline isotope studies to characterize groundwater, surface water, and snow
in the W-O Mine area
Provides results of analyses of samples from domestic water wells in the lower French
Gulch area.
Provides data on water quality in 15 streams in the Upper Colorado system including
waters in French Gulch and the Blue River as part of the National Water-Quality
Assessment (NAWQA) program.
The Northwest Colorado Council of Governments (NWCCG) collect water quality data
for the Blue River
Evaluates colloidial properties of metals in water samples collected during snowmelt
Provides lithium chloride, sodium bromide, and sodium chloride tracer studies in the
W-O Mine area and French Gulch
Provides results of geophysical logging, water quality, and stable isotope studies of the
Oro Shaft and monitoring wells in the W-O Mine area
Provides the results of analyses of samples of mine tailings, roaster fines, and mine
waste areas in the W-O Mine Complex
Provides the results of analyses of mine pool water samples, soil borings, and snow.
Provides the results of analyses of soil samples and air along French Gulch road for
arsenic, cadmium, and lead
Provides results of samples of groundwater from the W-O Mine Complex and French
Gulch and the Blue River surface water. Sampling completed monthly.
Table 2-6 Timeline_Sampling.wpd
-------
Table 3-1
Historic and Current Sampling Stations and Descriptions
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Historic and Current Sampling Stations and Descriptions
Location
French Gulch
Reference
South Branch
French Gulch
North Branch
French Gulch
(includes
groundwater
seeps)
Sampling ID
FG-0
FG-1
FG-2
FG-3
FG-4
FG-5
FG-5.5
FG-8
FG-9A
FG-9
TS-3
FG-6B
Study
CDPHE & EPA
USGS 392838105572900
CDPHE & EPA
USGS 39208105583600
CDPHE & EPA
USGS
CDPHE & EPA
USGS
CDPHE & EPA
USGS
CDPHE & EPA
USGS
AdrianBrown
AdrianBrown
CDPHE & EPA
USGS
USGS
CDPHE & EPA
USGS 9046530
AdrianBrown
USGS
392855106005200
CDPHE & EPA
USGS
Description
French Gulch upstream of Farncomb Hill
French Gulch near Wire Patch Mine; upstream of
McLeod Tunnel
French Gulch downstream of McLeod Tunnel
French Gulch downstream of Mineral Hill Mine,
upstream of Extenuate Pile
French Gulch downstream from Extenuate Pile
French Gulch
Located on southern branch of French Gulch,
directly south of FG-6C
French Gulch upstream of Dead Elk Pond within
the South Branch
French Gulch 450 ft. downstream of Dead Elk Pond
French Gulch 50 m upstream of confluence with
Blue River
French Gulch at Country Boy Mine just below road
to Country Boy
Seep at culvert downstream of MW-7 and MW-20
well road
I:\French Gulch\Baseline ERA\Report\Tables\Section 3 - Data Summary\table3-l.wpd
Page 1 of 3
-------
Table 3-1 (continued)
Historic and Current Sampling Stations and Descriptions
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Historic and Current Sampling Stations and Descriptions
Location
North Branch
French Gulch
(includes
groundwater
seeps)
Discharges to
French Gulch
Sampling ID
FG-6C
FG-6
FG-6A
TS-4
1140
1121
FG-7
CBMA-1
WP-1
KDS
MGB-1
RLCVT-1
Study
uses
AdrianBrown
CDPHE & EPA
USGS
CDPHE & EPA
USGS
USGS
392849106011500
USGS
USGS
CDPHE & EPA
USGS
392907106013900
USGS
USGS
CDPHE & EPA
USGS
USGS
USGS
Description
Seep near French Gulch Road upstream at Dead
Man's Curve
Seep on south side of French Gulch Road; Culvert
draining Wellington Mine tailings
Seep on south side of French Gulch Road;
French Gulch below Ford Gulch approx. 0.25 miles
downstream of W-O mine site
Seep at base of placer tailings piles that flows
directly to French Gulch (USGS NAWQA)
Seep at base of placer tailings piles that flows into
French Gulch (USGS NAWQA sample ) (ACS,
1999)
North Branch of French Gulch, upstream of Dead
Elk Pond; NAWQA site is approx. 100 m upstream
of EPA site.
Country Boy Mine Adit discharge at tour area
Seep at the base of mine waste pile on north side of
French Gulch Road
Kenny Dog Spring
Seep originating in the middle of Magnum Brown
Drive
Culvert drainage under Reliance Dr. upstream of
French Gulch
I:\French Gulch\Baseline ERA\Report\Tables\Section 3 - Data Summary\table3-l.wpd
Page 2 of 3
-------
Table 3-1 (continued)
Historic and Current Sampling Stations and Descriptions
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Historic and Current Sampling Stations and Descriptions
Location
Blue River
Reference
Blue River
Reference
Blue River
Sampling ID
BR-Adams
654
BR-1
655
BR-2
BR-BFG
BR-3
BR-4
656
643
657
BR-5
BR-Dillon
Study
USGS
NWCCOG
CDPHE & EPA
USGS
AdrianBrown
NWCCOG
CDPHE & EPA
USGS
AdrianBrown
USGS
CDPHE & EPA
USGS
AdrianBrown
USGS
NWCCOG
NWCCOG
NWCCOG
USGS
USGS
9046600
Description
Blue River at Adams St.
Blue River south of Breckenridge below Goose
pasture Tarn
Blue River 15 meters upstream from confluence
with French Gulch
Blue River at Park Avenue Bridge and south of
BR-1.
Blue River 50 meters downstream of confluence
with French Gulch
Blue River below French Gulch
Blue River 3.25 miles downstream of confluence
with French Gulch at Tiger Run Resort at parking
lot entry
Blue River approx. 65 feet upstream of the
confluence with the Swan River
Blue River immediately north of the confluence
with French Gulch
Blue River located between BR-2 and BR-3
Blue River located between BR-3 and BR-4, just
south of the confluence with the Swan River
Blue River at gauging station downstream of
confluence with the Swan River
Blue River near Swan Mountain Road before it
flows into Dillon reservoir
I:\French Gulch\Baseline ERA\Report\Tables\Section 3 - Data Summary\table3-l.wpd
Page 3 of 3
-------
Table 4-1
Summary of Surface Water COPCs
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Parameters
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Calcium
Chromium
Cobalt
Copper
Iron
Lead
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Potassium
Selenium
Silicone
Silver
Sodium
Thallium
Uranium
Zinc
Total
Aquatic Receptors
Qual
Type 1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
14
Qual
Type 2
0
Quant
COPC
X
X
X
X
X
X
X
X
X
9
Not a
COPC
X
X
X
3
Wildlife Receptors
Qual
Type 1
X
X
X
X
X
X
6
Qual
Type 2
X
X
X
X
4
Quant
COPC
X
X
X
X
X
X
6
Not a
COPC
X
X
X
X
X
X
X
X
X
X
10
Revised SW COPC Screen: COPC Summary
5/7/2002
-------
Table 4-2
Summary of Sediment COPCs
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Parameters
Aluminum
Arsenic
Cadmium
Chromium
Copper
Gold
Iron
Lead
Manganese
Mercury
Molybdenum
Nickel
Selenium
Silver
Zinc
Total
Aquatic Receptors
Qual
Type 1
X
X
X
3
Qual
Type 2
0
Quant
COPC
X
X
X
X
X
X
X
X
X
X
X
X
12
Not a
COPC
0
Wildlife Receptors
Qual
Type 1
X
X
X
3
Qual
Type 2
0
Quant
COPC
X
X
X
X
X
X
X
X
X
X
X
11
Not a
COPC
X
1
Revised Sed COPC Screen: COPC Summary
5/7/2002
-------
Table 5-la
Summary Statistics for Surface Water
ALUMINUM
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
0/1
2/2
1/1
0/1
1/1
0/1
1/3
0/1
na
2/3
na
2/2
1/1
1/1
5/5
3/3
5/8
0/2
2/12
na
na
0/1
1/9
2/6
2/8
na
6/12
2/4
na
na
na
4/10
7/9
0/1
1/2
na
na
na
na
6/12
na
Min (ug/L)
na
2.2E+02
1.9E+02
na
1.1E+05
na
3.6E+02
na
na
4.3E+01
na
5.9E+01
7.2E+02
3.0E+03
7.1E+01
5.1E+01
1.1E+02
na
3.0E+01
na
na
na
3.0E+01
3.0E+01
3.0E+01
na
3.0E+01
2.4E+02
na
na
na
4.0E+01
3.0E+01
na
1.2E+02
na
na
na
na
4.0E+01
na
Mean
(ug/L)
na
3.4E+02
1.9E+02
na
1.1E+05
na
3.6E+02
na
na
1.5E+02
na
7.7E+01
7.2E+02
3.0E+03
3.0E+02
2.2E+02
2.5E+02
na
1.5E+02
na
na
na
3.0E+01
3.0E+01
4.3E+01
na
8.0E+01
2.4E+02
na
na
na
l.OE+02
2.8E+02
na
1.2E+02
na
na
na
na
1.3E+02
na
Max (ug/L)
na
4.5E+02
1.9E+02
na
1.1E+05
na
3.6E+02
na
na
2.5E+02
na
9.4E+01
7.2E+02
3.0E+03
7.1E+02
3.2E+02
5.9E+02
na
2.7E+02
na
na
na
3.0E+01
3.0E+01
5.5E+01
na
1.8E+02
2.5E+02
na
na
na
2.3E+02
1.3E+03
na
1.2E+02
na
na
na
na
4.0E+02
na
Dissolved
Detection
Frequency
0/1
2/2
0/1
0/1
1/1
1/2
3/5
0/1
na
0/3
na
1/2
1/1
1/1
1/6
1/2
6/13
na
4/13
1/1
2/2
0/1
0/9
4/10
0/9
na
20/29
0/3
na
na
na
5/15
4/13
0/1
0/3
2/2
1/1
na
na
4/16
2/2
Min (ug/L)
na
4.2E+01
na
na
9.6E+04
9.0E+00
2.0E+00
na
na
na
na
8.1E+01
6.8E+02
2.2E+03
4.6E+01
5.9E+01
8.1E+01
na
l.OE+01
6.0E+00
l.OE+01
na
na
1.4E+01
na
na
4.0E+00
na
na
na
na
1.7E+01
1.6E+01
na
na
5.0E+00
7.0E+00
na
na
7.6E+01
5.0E+00
Mean
(ug/L)
na
l.OE+02
na
na
9.6E+04
9.0E+00
5.2E+01
na
na
na
na
8.1E+01
6.8E+02
2.2E+03
4.6E+01
5.9E+01
2.3E+02
na
5.2E+01
6.0E+00
1.5E+01
na
na
2.0E+01
na
na
9.5E+00
na
na
na
na
4.9E+01
2.9E+01
na
na
7.5E+00
7.0E+00
na
na
4.3E+02
7.5E+00
Max (ug/L)
na
1.6E+02
na
na
9.6E+04
9.0E+00
1.5E+02
na
na
na
na
8.1E+01
6.8E+02
2.2E+03
4.6E+01
5.9E+01
3.7E+02
na
1.6E+02
6.0E+00
2.0E+01
na
na
3.1E+01
na
na
2.0E+01
na
na
na
na
9.6E+01
4.3E+01
na
na
l.OE+01
7.0E+00
na
na
1.4E+03
l.OE+01
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/8/2002
-------
Table 5-lb
Summary Statistics for Surface Water
CADMIUM
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
1/1
2/2
1/1
1/1
1/1
1/2
0/4
0/3
0/1
0/4
1/1
2/2
1/1
2/2
8/8
3/3
12/12
2/2
16/16
na
na
1/2
5/13
11/11
15/15
1/1
18/18
4/4
5/5
21/21
20/20
16/16
14/15
1/1
1/2
na
na
1/22
9/20
4/17
na
Min (ug/L)
3.0E+00
6.1E+00
6.0E+00
6.0E+00
2.3E+04
6.0E-01
na
na
na
na
1.2E+00
3.6E+01
9.0E+01
6.1E+01
1.5E+01
6.1E+01
5.4E+01
7.8E+00
5.3E+00
na
na
5.0E-01
3.0E-01
1.1E+00
1.6E+00
2.6E+00
2.6E+00
6.1E+00
6.6E-01
8.9E-01
4.2E-01
1.3E+00
4.0E-01
8.0E-01
l.OE+00
na
na
1.3E-01
1.2E-01
2.0E-01
na
Mean
(ug/L)
3.0E+00
1.2E+01
6.0E+00
6.0E+00
2.3E+04
6.0E-01
na
na
na
na
1.2E+00
8.6E+01
9.0E+01
1.8E+02
4.0E+01
9.0E+01
1.1E+02
9.1E+00
1.1E+01
na
na
5.0E-01
3.8E-01
1.7E+00
2.8E+00
2.6E+00
5.3E+00
6.7E+00
7.8E-01
2.8E+00
6.1E-01
3.8E+00
6.6E-01
8.0E-01
l.OE+00
na
na
1.3E-01
2.4E-01
4.6E-01
na
Max (ug/L)
3.0E+00
1.7E+01
6.0E+00
6.0E+00
2.3E+04
6.0E-01
na
na
na
na
1.2E+00
1.4E+02
9.0E+01
3.1E+02
l.OE+02
1.1E+02
3.7E+02
l.OE+01
1.8E+01
na
na
5.0E-01
6.0E-01
2.0E+00
4.9E+00
2.6E+00
8.4E+00
7.6E+00
9.4E-01
8.6E+00
1.1E+00
7.2E+00
9.0E-01
8.0E-01
l.OE+00
na
na
1.3E-01
5.7E-01
6.0E-01
na
Dissolved
Detection
Frequency
1/1
1/2
1/1
1/1
1/1
0/3
0/6
0/3
na
1/3
na
2/2
1/1
1/1
8/8
2/2
22/22
na
22/22
0/1
2/2
0/2
5/16
11/11
17/17
1/1
48/48
4/4
4/5
23/23
21/21
26/26
20/24
0/1
1/3
2/2
0/2
1/23
5/21
4/23
0/2
Min (ug/L)
2.0E+00
1.8E+01
5.0E+00
6.0E+00
2.0E+04
na
na
na
na
5.0E-01
na
3.8E+01
9.5E+01
3.1E+02
1.5E+01
6.0E+01
1.6E+01
na
5.0E+00
na
5.0E+00
na
l.OE-01
1.1E+00
1.2E+00
3.0E+00
2.8E+00
4.2E+00
6.4E-01
7.7E-01
3.9E-01
6.0E-01
4.0E-01
na
7.0E-01
2.0E+00
na
5.0E-02
1.1E-01
l.OE-01
na
Mean
(ug/L)
2.0E+00
1.8E+01
5.0E+00
6.0E+00
2.0E+04
na
na
na
na
5.0E-01
na
8.7E+01
9.5E+01
3.1E+02
4.0E+01
8.7E+01
7.9E+01
na
1.2E+01
na
5.5E+00
na
2.4E-01
2.0E+00
2.9E+00
3.0E+00
6.1E+00
6.5E+00
6.8E-01
2.6E+00
5.7E-01
4.3E+00
5.9E-01
na
7.0E-01
3.0E+00
na
5.0E-02
2.2E-01
1.5E-01
na
Max (ug/L)
2.0E+00
1.8E+01
5.0E+00
6.0E+00
2.0E+04
na
na
na
na
5.0E-01
na
1.4E+02
9.5E+01
3.1E+02
l.OE+02
1.1E+02
3.8E+02
na
2.0E+01
na
6.0E+00
na
3.0E-01
2.5E+00
7.5E+00
3.0E+00
1.1E+01
8.9E+00
7.5E-01
6.7E+00
8.0E-01
8.2E+00
9.0E-01
na
7.0E-01
4.0E+00
na
5.0E-02
3.0E-01
3.0E-01
na
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/7/2002
-------
Table 5-lc
Summary Statistics for Surface Water
COPPER
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
0/1
2/2
1/1
0/1
1/1
0/2
1/4
0/3
0/1
0/4
0/1
2/2
1/1
1/2
5/8
2/3
11/12
2/2
11/16
na
na
1/2
5/13
9/11
8/15
0/1
12/18
4/4
5/5
18/21
18/19
10/16
6/15
1/1
0/2
na
na
12/21
17/20
8/17
na
Min (ug/L)
na
5.7E+00
l.OE+00
na
9.6E+03
na
1.4E+00
na
na
na
na
8.5E+00
4.7E+01
2.2E+02
4.2E+00
1.1E+01
8.9E+00
1.3E+00
l.OE+00
na
na
1.1E+00
l.OE+00
l.OE+00
l.OE+00
na
l.OE+00
1.3E+00
1.1E+00
l.OE+00
1.1E+00
l.OE+00
l.OE+00
1.7E+00
na
na
na
l.OE+00
l.OE+00
l.OE+00
na
Mean
(ug/L)
na
8.6E+00
l.OE+00
na
9.6E+03
na
1.4E+00
na
na
na
na
1.3E+01
4.7E+01
2.2E+02
1.7E+01
1.4E+01
4.5E+01
1.9E+00
5.2E+00
na
na
1.1E+00
2.4E+00
1.1E+00
2.3E+00
na
2.4E+00
2.4E+00
1.5E+00
1.4E+01
9.4E+00
2.1E+00
2.0E+00
1.7E+00
na
na
na
8.3E+00
7.3E+00
2.5E+00
na
Max (ug/L)
na
1.1E+01
l.OE+00
na
9.6E+03
na
1.4E+00
na
na
na
na
1.7E+01
4.7E+01
2.2E+02
4.9E+01
1.6E+01
9.4E+01
2.5E+00
1.1E+01
na
na
1.1E+00
6.0E+00
2.0E+00
5.0E+00
na
5.9E+00
3.3E+00
2.4E+00
6.9E+01
6.8E+01
5.1E+00
4.6E+00
1.7E+00
na
na
na
2.3E+01
2.9E+01
6.0E+00
na
Dissolved
Detection
Frequency
0/1
1/2
0/1
0/1
1/1
1/3
2/6
0/3
na
1/3
na
2/2
1/1
1/1
4/8
1/2
11/12
na
11/17
0/1
2/2
0/2
2/12
11/11
7/15
1/1
23/35
2/3
4/5
14/19
16/20
10/16
7/15
0/1
0/3
1/2
1/2
11/21
14/18
6/17
1/2
Min (ug/L)
na
6.7E+00
na
na
8.4E+03
l.OE+00
1.4E+00
na
na
9.0E-01
na
5.0E+00
4.0E+01
1.9E+02
2.3E+00
4.2E+00
6.7E+00
na
2.0E+00
na
2.0E+00
na
1.1E+00
7.0E-01
1.1E+00
2.0E+00
l.OE+00
1.1E+00
l.OE+00
l.OE+00
1.2E+00
l.OE+00
l.OE+00
na
na
2.0E+00
2.0E+00
1.2E+00
1.1E+00
6.0E-01
2.0E+00
Mean
(ug/L)
na
6.7E+00
na
na
8.4E+03
l.OE+00
1.5E+00
na
na
9.0E-01
na
l.OE+01
4.0E+01
1.9E+02
l.OE+01
4.2E+00
4.3E+01
na
5.1E+00
na
2.5E+00
na
1.5E+00
1.4E+00
2.9E+00
2.0E+00
2.8E+00
1.6E+00
1.5E+00
5.3E+00
4.2E+00
1.8E+00
1.3E+00
na
na
2.0E+00
2.0E+00
7.1E+00
5.9E+00
2.3E+00
2.0E+00
Max (ug/L)
na
6.7E+00
na
na
8.4E+03
l.OE+00
1.5E+00
na
na
9.0E-01
na
1.5E+01
4.0E+01
1.9E+02
2.1E+01
4.2E+00
9.3E+01
na
9.0E+00
na
3.0E+00
na
1.8E+00
2.0E+00
l.OE+01
2.0E+00
1.3E+01
2.1E+00
2.3E+00
2.7E+01
9.5E+00
3.0E+00
2.4E+00
na
na
2.0E+00
2.0E+00
1.9E+01
1.7E+01
7.0E+00
2.0E+00
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/7/2002
-------
Table 5-ld
Summary Statistics for Surface Water
IRON
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
1/1
2/2
1/1
1/1
1/1
1/2
3/4
1/3
0/1
3/4
1/1
2/2
1/1
2/2
8/8
3/3
13/13
2/2
16/16
na
na
1/2
10/12
11/11
13/15
1/1
19/19
4/4
2/5
11/22
10/20
16/16
13/15
1/1
2/2
na
na
16/22
15/20
16/17
na
Min (ug/L)
1.1E+03
1.8E+03
3.0E+02
4.7E+01
8.4E+05
2.2E+01
4.1E+01
8.1E+01
na
3.3E+01
2.7E+03
4.2E+02
3.6E+04
3.7E+03
2.8E+04
1.1E+05
7.0E+04
2.7E+03
1.2E+02
na
na
7.8E+01
l.OE+01
l.OE+01
l.OE+01
6.0E+01
3.0E+01
7.5E+01
1.7E+02
1.1E+02
l.OE+02
2.0E+01
2.0E+01
4.5E+01
4.6E+01
na
na
5.1E+01
1.1E+02
4.0E+01
na
Mean
(ug/L)
1.1E+03
2.9E+03
3.0E+02
4.7E+01
8.4E+05
2.2E+01
1.8E+02
8.1E+01
na
1.1E+02
2.7E+03
7.5E+02
3.6E+04
8.8E+04
6.4E+04
1.7E+05
1.5E+05
5.5E+03
4.2E+02
na
na
7.8E+01
5.7E+01
2.9E+01
8.6E+01
6.0E+01
1.5E+02
3.7E+02
1.8E+02
3.8E+02
2.5E+02
1.2E+02
1.7E+02
4.5E+01
8.1E+01
na
na
1.5E+02
2.7E+02
1.8E+02
na
Max (ug/L)
1.1E+03
3.9E+03
3.0E+02
4.7E+01
8.4E+05
2.2E+01
4.5E+02
8.1E+01
na
2.6E+02
2.7E+03
1.1E+03
3.6E+04
1.7E+05
1.1E+05
2.4E+05
3.6E+05
8.3E+03
1.2E+03
na
na
7.8E+01
1.5E+02
5.0E+01
2.8E+02
6.0E+01
4.7E+02
6.7E+02
1.8E+02
1.8E+03
5.8E+02
2.8E+02
1.3E+03
4.5E+01
1.2E+02
na
na
2.8E+02
6.9E+02
7.7E+02
na
Dissolved
Detection
Frequency
1/1
2/2
0/1
0/1
1/1
1/2
5/5
1/1
na
2/3
na
2/2
1/1
1/1
6/6
2/2
23/23
na
21/21
1/1
2/2
1/1
11/15
5/11
9/15
0/1
33/43
4/4
0/5
0/23
0/21
14/24
7/22
0/1
0/3
2/2
1/2
0/23
0/20
21/21
2/2
Min (ug/L)
5.3E+02
1.9E+02
na
na
6.9E+05
l.OE+01
3.0E+00
2.8E+01
na
7.3E+00
na
1.2E+02
3.4E+04
1.6E+05
3.9E+04
1.6E+05
1.9E+04
na
l.OE+01
l.OE+01
7.4E+01
1.3E+01
l.OE+01
2.0E+01
5.6E+00
na
4.0E+00
2.0E+01
na
na
na
l.OE+01
6.8E+00
na
na
8.0E+00
2.2E+01
na
na
l.OE+01
2.4E+01
Mean
(ug/L)
5.3E+02
8.5E+02
na
na
6.9E+05
l.OE+01
5.1E+01
2.8E+01
na
1.1E+01
na
3.2E+02
3.4E+04
1.6E+05
6.5E+04
2.2E+05
1.2E+05
na
1.7E+02
l.OE+01
1.1E+02
1.3E+01
2.4E+01
2.6E+01
2.3E+01
na
4.0E+01
5.2E+01
na
na
na
2.1E+01
3.9E+01
na
na
2.8E+01
2.2E+01
na
na
2.4E+01
3.2E+01
Max (ug/L)
5.3E+02
1.5E+03
na
na
6.9E+05
l.OE+01
1.9E+02
2.8E+01
na
1.4E+01
na
5.2E+02
3.4E+04
1.6E+05
9.5E+04
2.8E+05
3.4E+05
na
5.2E+02
l.OE+01
1.5E+02
1.3E+01
8.0E+01
3.0E+01
5.1E+01
na
3.7E+02
1.4E+02
na
na
na
5.0E+01
1.3E+02
na
na
4.8E+01
2.2E+01
na
na
4.5E+01
4.0E+01
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/7/2002
-------
Table 5-le
Summary Statistics for Surface Water
LEAD
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
1/1
2/2
1/1
1/1
1/1
0/2
1/4
0/3
0/1
2/4
1/1
2/2
1/1
2/2
8/8
3/3
11/11
0/2
15/16
na
na
1/2
8/13
11/11
10/15
1/1
16/17
4/4
2/5
20/22
6/20
15/16
12/15
1/1
1/2
na
na
1/22
5/20
13/16
na
Min (ug/L)
2.0E+00
2.2E+00
5.0E+00
l.OE+00
5.5E+03
na
4.2E+00
na
na
3.7E+00
1.8E+01
9.9E+00
8.2E+01
1.9E+02
3.3E+01
1.8E+02
1.1E+02
na
1.7E+00
na
na
3.3E+00
3.0E-01
4.0E-01
8.0E-01
3.2E+00
4.1E+00
2.7E+00
2.5E+00
1.6E+00
l.OE+00
1.1E+00
2.0E-01
3.6E+00
3.8E+00
na
na
1.2E+00
1.4E+00
2.0E-01
na
Mean
(ug/L)
2.0E+00
1.3E+01
5.0E+00
l.OE+00
5.5E+03
na
4.2E+00
na
na
3.9E+00
1.8E+01
2.8E+01
8.2E+01
2.3E+02
8.1E+01
2.1E+02
1.9E+02
na
5.2E+00
na
na
3.3E+00
3.4E+00
5.9E-01
3.3E+00
3.2E+00
8.3E+00
9.3E+00
3.6E+00
7.6E+00
2.5E+00
6.4E+00
1.2E+00
3.6E+00
3.8E+00
na
na
1.2E+00
2.4E+00
l.OE+00
na
Max (ug/L)
2.0E+00
2.5E+01
5.0E+00
l.OE+00
5.5E+03
na
4.2E+00
na
na
4.0E+00
1.8E+01
4.6E+01
8.2E+01
2.7E+02
1.4E+02
2.3E+02
4.6E+02
na
2.0E+01
na
na
3.3E+00
1.7E+01
7.0E-01
8.4E+00
3.2E+00
2.6E+01
1.6E+01
4.6E+00
6.2E+01
6.5E+00
2.6E+01
4.5E+00
3.6E+00
3.8E+00
na
na
1.2E+00
5.1E+00
3.7E+00
na
Dissolved
Detection
Frequency
0/1
0/2
0/1
0/1
1/1
0/3
1/6
0/3
na
0/3
na
1/2
1/1
1/1
5/8
2/2
27/29
na
14/22
0/1
0/2
0/2
2/16
15/19
11/17
1/1
46/51
1/4
1/5
6/23
0/21
27/33
10/32
0/1
0/3
2/2
0/2
0/23
0/21
7/27
0/2
Min (ug/L)
na
na
na
na
7.4E+02
na
3.6E+00
na
na
na
na
2.4E+01
5.7E+01
6.5E+01
1.1E+00
1.3E+01
5.0E-01
na
l.OE-01
na
na
na
3.0E-01
l.OE-01
3.0E-01
5.0E-01
1.3E+00
3.5E+00
1.8E+00
l.OE+00
na
3.0E-01
3.0E-01
na
na
l.OE+00
na
na
na
2.0E-01
na
Mean
(ug/L)
na
na
na
na
7.4E+02
na
3.6E+00
na
na
na
na
2.4E+01
5.7E+01
6.5E+01
3.1E+00
4.5E+01
5.4E+01
na
1.2E+00
na
na
na
3.0E-01
6.4E-01
1.4E+00
5.0E-01
5.5E+00
3.5E+00
1.8E+00
1.6E+00
na
2.6E+00
7.4E-01
na
na
1.5E+00
na
na
na
1.2E+00
na
Max (ug/L)
na
na
na
na
7.4E+02
na
3.6E+00
na
na
na
na
2.4E+01
5.7E+01
6.5E+01
6.0E+00
7.8E+01
2.6E+02
na
4.1E+00
na
na
na
3.0E-01
1.7E+00
9.0E+00
5.0E-01
5.1E+01
3.5E+00
1.8E+00
2.6E+00
na
9.4E+00
1.8E+00
na
na
2.0E+00
na
na
na
4.7E+00
na
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/7/2002
-------
Table 5-lf
Summary Statistics for Surface Water
MERCURY
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
na
na
na
na
1/1
na
0/1
na
na
na
na
na
na
0/1
0/1
na
0/1
na
0/1
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Min (ug/L)
na
na
na
na
4.0E+02
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Mean
(ug/L)
na
na
na
na
4.0E+02
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Max (ug/L)
na
na
na
na
4.0E+02
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Dissolved
Detection
Frequency
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Min (ug/L)
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Mean
(ug/L)
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Max (ug/L)
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/7/2002
-------
Table 5-lg
Summary Statistics for Surface Water
NICKEL
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
0/1
2/2
0/1
0/1
1/1
0/1
0/3
0/1
na
0/3
na
2/2
1/1
1/1
5/5
3/3
11/11
1/2
6/15
na
na
na
0/11
0/11
0/12
0/1
0/15
0/4
na
na
na
0/14
0/13
0/1
0/2
na
na
na
na
0/15
na
Min (ug/L)
na
2.1E+01
na
na
1.7E+03
na
na
na
na
na
na
1.4E+01
8.0E+01
1.2E+02
6.1E+01
1.2E+02
9.0E+01
1.8E+01
l.OE+01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Mean
(ug/L)
na
3.0E+01
na
na
1.7E+03
na
na
na
na
na
na
2.8E+01
8.0E+01
1.2E+02
8.0E+01
1.5E+02
1.6E+02
1.8E+01
1.2E+01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Max (ug/L)
na
3.8E+01
na
na
1.7E+03
na
na
na
na
na
na
4.3E+01
8.0E+01
1.2E+02
1.1E+02
1.8E+02
3.7E+02
1.8E+01
2.0E+01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Dissolved
Detection
Frequency
0/1
1/2
0/1
0/1
1/1
0/2
0/5
0/1
na
0/3
na
2/2
1/1
1/1
6/6
2/2
11/11
na
8/16
0/1
0/2
na
0/10
0/11
0/12
0/1
17/29
0/3
na
na
na
0/14
0/13
0/1
0/3
1/2
0/2
na
na
0/15
0/2
Min (ug/L)
na
4.1E+01
na
na
1.4E+03
na
na
na
na
na
na
1.6E+01
8.1E+01
1.2E+02
3.8E+01
1.7E+02
l.OE+02
na
2.0E+00
na
na
na
na
na
na
na
2.0E+00
na
na
na
na
na
na
na
na
l.OE+00
na
na
na
na
na
Mean
(ug/L)
na
4.1E+01
na
na
1.4E+03
na
na
na
na
na
na
3.7E+01
8.1E+01
1.2E+02
7.4E+01
1.7E+02
1.5E+02
na
9.3E+00
na
na
na
na
na
na
na
3.3E+00
na
na
na
na
na
na
na
na
l.OE+00
na
na
na
na
na
Max (ug/L)
na
4.1E+01
na
na
1.4E+03
na
na
na
na
na
na
5.8E+01
8.1E+01
1.2E+02
1.2E+02
1.7E+02
3.6E+02
na
2.0E+01
na
na
na
na
na
na
na
5.0E+00
na
na
na
na
na
na
na
na
l.OE+00
na
na
na
na
na
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/7/2002
-------
Table 5-lg
Summary Statistics for Surface Water
NICKEL
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
0/1
2/2
0/1
0/1
1/1
0/1
0/3
0/1
na
0/3
na
2/2
1/1
1/1
5/5
3/3
11/11
1/2
6/15
na
na
na
0/11
0/11
0/12
0/1
0/15
0/4
na
na
na
0/14
0/13
0/1
0/2
na
na
na
na
0/15
na
Min (ug/L)
na
2.1E+01
na
na
1.7E+03
na
na
na
na
na
na
1.4E+01
8.0E+01
1.2E+02
6.1E+01
1.2E+02
9.0E+01
1.8E+01
l.OE+01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Mean
(ug/L)
na
3.0E+01
na
na
1.7E+03
na
na
na
na
na
na
2.8E+01
8.0E+01
1.2E+02
8.0E+01
1.5E+02
1.6E+02
1.8E+01
1.2E+01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Max (ug/L)
na
3.8E+01
na
na
1.7E+03
na
na
na
na
na
na
4.3E+01
8.0E+01
1.2E+02
1.1E+02
1.8E+02
3.7E+02
1.8E+01
2.0E+01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Dissolved
Detection
Frequency
0/1
1/2
0/1
0/1
1/1
0/2
0/5
0/1
na
0/3
na
2/2
1/1
1/1
6/6
2/2
11/11
na
8/16
0/1
0/2
na
0/10
0/11
0/12
0/1
17/29
0/3
na
na
na
0/14
0/13
0/1
0/3
1/2
0/2
na
na
0/15
0/2
Min (ug/L)
na
4.1E+01
na
na
1.4E+03
na
na
na
na
na
na
1.6E+01
8.1E+01
1.2E+02
3.8E+01
1.7E+02
l.OE+02
na
2.0E+00
na
na
na
na
na
na
na
2.0E+00
na
na
na
na
na
na
na
na
l.OE+00
na
na
na
na
na
Mean
(ug/L)
na
4.1E+01
na
na
1.4E+03
na
na
na
na
na
na
3.7E+01
8.1E+01
1.2E+02
7.4E+01
1.7E+02
1.5E+02
na
9.3E+00
na
na
na
na
na
na
na
3.3E+00
na
na
na
na
na
na
na
na
l.OE+00
na
na
na
na
na
Max (ug/L)
na
4.1E+01
na
na
1.4E+03
na
na
na
na
na
na
5.8E+01
8.1E+01
1.2E+02
1.2E+02
1.7E+02
3.6E+02
na
2.0E+01
na
na
na
na
na
na
na
5.0E+00
na
na
na
na
na
na
na
na
l.OE+00
na
na
na
na
na
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/7/2002
-------
Table 5-lh
Summary Statistics for Surface Water
SILVER
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
0/1
0/2
0/1
0/1
1/1
0/2
0/4
0/3
na
0/4
0/1
1/2
0/1
1/2
2/8
0/3
0/2
0/2
1/9
na
na
0/3
0/8
na
0/8
na
0/10
0/4
na
na
na
0/8
0/7
0/1
0/2
na
na
na
na
0/8
na
Min (ug/L)
na
na
na
na
2.5E+01
na
na
na
na
na
na
2.0E-01
na
3.4E-01
3.3E-01
na
na
na
3.0E-01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Mean
(ug/L)
na
na
na
na
2.5E+01
na
na
na
na
na
na
2.0E-01
na
3.4E-01
l.OE+00
na
na
na
3.0E-01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Max (ug/L)
na
na
na
na
2.5E+01
na
na
na
na
na
na
2.0E-01
na
3.4E-01
1.7E+00
na
na
na
3.0E-01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Dissolved
Detection
Frequency
0/1
0/2
0/1
0/1
1/1
0/3
0/6
0/3
na
0/3
na
0/2
0/1
0/1
2/8
0/2
0/2
na
0/9
0/1
0/2
0/2
0/7
na
0/8
na
0/27
0/3
na
na
na
0/8
0/7
0/1
0/3
0/2
0/2
na
na
0/8
0/2
Min (ug/L)
na
na
na
na
l.OE+00
na
na
na
na
na
na
na
na
na
3.0E-01
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Mean
(ug/L)
na
na
na
na
l.OE+00
na
na
na
na
na
na
na
na
na
1.6E+00
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
Max (ug/L)
na
na
na
na
l.OE+00
na
na
na
na
na
na
na
na
na
2.9E+00
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/7/2002
-------
Table 5-li
Summary Statistics for Surface Water
ZINC
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Discharge
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
French Gulch
Blue River
Blue River Reference
Station ID
CBMA-1
KDS
MGB-1
RLCVT-1
WP-1
FG-0
FG-1
FG-2
FG-2 spring
FG-3
Mcleod Tunnel
1121
1140
FG-6
FG-6A
FG-6B
FG-6C
FG-6D
FG-7
TS-3
TS-4
FG-4
FG-5
FG-5.5
FG-8
FG-10
FG-9
FG-9A
643
656
657
BR-2
BR-3
BR-4
BR-5
BR-BFG
BR-Dillon
654
655
BR-1
BR- Adams St
Total
Detection
Frequency
1/1
2/2
1/1
1/1
1/1
1/2
3/4
2/3
1/2
4/4
1/1
2/2
1/1
2/2
8/8
3/3
15/15
2/2
16/16
na
na
2/3
12/13
12/12
15/15
1/1
20/20
4/4
5/5
22/22
20/20
17/17
15/15
1/1
2/2
na
na
0/21
16/20
17/17
na
Min (ug/L)
3.0E+03
5.4E+03
1.6E+03
2.1E+03
3.5E+06
1.2E+01
7.0E+00
l.OE+01
l.OE+01
8.4E+00
4.9E+02
1.8E+04
7.9E+04
1.7E+04
4.3E+04
1.2E+05
8.5E+04
6.5E+03
2.3E+03
na
na
3.4E+01
1.5E+01
3.5E+02
4.5E+02
7.1E+02
9.2E+02
2.3E+03
1.9E+02
3.2E+02
8.0E+01
4.2E+02
7.0E+01
7.4E+01
4.4E+01
na
na
na
l.OE+01
8.8E+00
na
Mean
(ug/L)
3.0E+03
7.6E+03
1.6E+03
2.1E+03
3.5E+06
1.2E+01
1.4E+01
1.9E+01
l.OE+01
1.7E+01
4.9E+02
3.4E+04
7.9E+04
7.4E+04
6.8E+04
1.4E+05
1.4E+05
1.3E+04
7.5E+03
na
na
4.8E+03
4.4E+01
5.0E+02
7.5E+02
7.1E+02
2.2E+03
2.6E+03
2.2E+02
1.3E+03
1.3E+02
1.6E+03
1.1E+02
7.4E+01
7.9E+01
na
na
na
2.8E+01
3.1E+01
na
Max (ug/L)
3.0E+03
9.8E+03
1.6E+03
2.1E+03
3.5E+06
1.2E+01
1.9E+01
2.8E+01
l.OE+01
2.6E+01
4.9E+02
5.1E+04
7.9E+04
1.3E+05
1.1E+05
1.5E+05
3.1E+05
1.9E+04
1.4E+04
na
na
9.6E+03
1.2E+02
6.7E+02
1.5E+03
7.1E+02
4.4E+03
3.4E+03
2.7E+02
3.6E+03
2.1E+02
4.3E+03
2.7E+02
7.4E+01
1.1E+02
na
na
na
l.OE+02
1.1E+02
na
Dissolved
Detection
Frequency
1/1
2/2
1/1
1/1
1/1
1/3
5/6
2/3
na
3/3
0/1
2/2
1/1
1/1
8/8
2/2
24/24
na
22/22
1/1
2/2
1/2
15/16
11/11
17/17
na
45/45
3/3
4/4
22/22
21/21
26/26
24/24
1/1
3/3
2/2
2/2
1/23
14/19
23/24
2/2
Min (ug/L)
2.8E+03
4.1E+03
1.5E+03
2.0E+03
3.1E+06
2.0E+00
7.0E+00
l.OE+01
na
l.OE+01
na
1.8E+04
8.4E+04
1.3E+05
7.0E+03
1.5E+05
2.8E+04
na
l.OE+03
3.0E+01
l.OE+03
1.4E+01
l.OE+01
3.8E+02
3.0E+02
na
1.1E+03
2.2E+03
1.9E+02
3.1E+02
7.9E+01
3.3E+02
5.0E+01
5.3E+01
3.1E+01
5.4E+02
6.9E+01
l.OE+01
l.OE+01
7.0E+00
2.2E+01
Mean
(ug/L)
2.8E+03
7.3E+03
1.5E+03
2.0E+03
3.1E+06
2.0E+00
1.2E+01
1.3E+01
na
1.3E+01
na
3.4E+04
8.4E+04
1.3E+05
6.0E+04
1.6E+05
1.3E+05
na
7.3E+03
3.0E+01
1.1E+03
1.4E+01
4.0E+01
5.0E+02
7.1E+02
na
2.6E+03
2.6E+03
2.1E+02
1.3E+03
1.2E+02
2.0E+03
l.OE+02
5.3E+01
7.6E+01
l.OE+03
9.5E+01
l.OE+01
2.2E+01
1.8E+01
2.6E+01
Max (ug/L)
2.8E+03
l.OE+04
1.5E+03
2.0E+03
3.1E+06
2.0E+00
2.0E+01
1.5E+01
na
1.6E+01
na
5.0E+04
8.4E+04
1.3E+05
l.OE+05
1.7E+05
3.0E+05
na
1.6E+04
3.0E+01
1.1E+03
1.4E+01
1.1E+02
6.6E+02
1.5E+03
na
4.5E+03
3.3E+03
2.5E+02
3.8E+03
2.0E+02
4.2E+03
2.4E+02
5.3E+01
9.9E+01
1.5E+03
1.2E+02
l.OE+01
5.1E+01
6.0E+01
2.9E+01
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Surface Water Summary: Data Summary
5/7/2002
-------
Table 5-2
Summary of Sediment Data
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
General Location
Blue River
Blue River Reference
French Gulch
French Gulch Reference
North Branch French Gulch
South Branch French Gulch
Station ID
BR-BFG
BR-Dillon
BR-Adams St
FG-9
FG-9A
FG-0
FG-1
FG-7
TS-3
TS-4
Bank Sed. 1
Bank Sed. 2
Dead Elk Sed. 1
Dead Elk Sed. 2
Stream Sed. 1
Stream Sed. 2
Stream Sed. 3
Stream Sed. 4
Stream Sed. 5
Stream Sed. 6
Concentration (mg/kg)
Aluminum
7.6E+04
8.3E+04
7.8E+04
7.3E+04
5.8E+04
7.5E+04
8.0E+04
6.0E+04
6.0E+04
6.6E+04
na
na
na
na
na
na
na
na
na
na
u
'5
2.3E+01
2.4E+01
1.3E+01
3.6E+01
1.2E+02
5.9E+01
6.2E+01
1.1E+02
1.8E+02
1.1E+02
7.2E+01
1.1E+02
5.8E+01
l.OE+02
2.0E+02
1.4E+02
1.6E+02
2.2E+02
1.1E+02
l.OE+02
Cadmium
1.1E+01
1.5E+01
2.8E+00
5.7E+01
8.2E+01
5.8E+00
6.1E+00
1.1E+02
2.1E+02
9.1E+01
5.2E+01
4.4E+01
4.2E+01
7.7E+01
1.5E+02
6.9E+01
1.1E+02
1.1E+02
3.5E+01
5.4E+01
Chromium
7.5E+01
8.2E+01
6.3E+01
5.3E+01
3.5E+01
5.4E+01
5.0E+01
3.4E+01
3.4E+01
4.0E+01
na
na
na
na
na
na
na
na
na
na
1
B.
3
1.1E+02
6.8E+01
4.5E+01
2.1E+02
3.2E+02
4.6E+01
6.6E+01
3.1E+02
4.9E+02
2.8E+02
na
na
na
na
na
na
na
na
na
na
c
4.6E+04
4.4E+04
3.6E+04
4.9E+04
1.2E+05
3.9E+04
3.8E+04
1.1E+05
6.3E+04
7.1E+04
4.3E+04
5.6E+04
6.0E+04
1.5E+05
5.0E+04
9.3E+04
5.6E+04
1.3E+05
6.0E+04
5.5E+04
•o
«
J
6.4E+02
3.2E+02
1.6E+02
1.8E+03
2.3E+03
1.5E+02
3.8E+02
1.9E+03
6.5E+03
1.8E+03
8.2E+02
1.4E+03
1.6E+03
2.0E+03
3.8E+03
3.5E+03
2.6E+03
3.4E+03
l.OE+03
1.2E+03
Manganese
1.6E+03
1.3E+03
1.3E+03
4.4E+03
9.1E+03
1.3E+03
7.7E+02
1.2E+04
3.6E+03
3.3E+03
na
na
na
na
na
na
na
na
na
na
|>
1
Oi
2.5E-01
2.2E-01
l.OE-01
2.5E-01
2.9E-01
5.0E-02
2.7E-01
2.8E-01
3.5E-01
2.9E-01
na
na
na
na
na
na
na
na
na
na
1
u
Z
3.2E+01
3.3E+01
2.7E+01
2.8E+01
3.1E+01
3.0E+01
2.7E+01
3.2E+01
2.3E+01
2.7E+01
na
na
na
na
na
na
na
na
na
na
£.
aj
_£
5i
3.7E+00
1.9E+00
1.3E+00
6.7E+00
1.9E+01
1.1E+00
2.1E+00
1.8E+01
3.0E+01
1.7E+01
4.2E+00
7.6E+00
9.7E+00
9.0E+01
3.4E+01
2.2E+01
2.9E+01
2.4E+01
5.5E+00
6.8E+00
u
C
N
3.0E+03
2.3E+03
6.0E+02
9.0E+03
1.8E+04
6.3E+02
7.8E+02
2.2E+04
3.5E+04
1.7E+04
7.2E+03
5.5E+03
6.4E+03
1.6E+04
2.5E+04
1.2E+04
1.8E+04
1.9E+04
4.8E+03
6.3E+03
na = not analyzed
Values presented are the measured concentration at a station; non-detects were evaluated at 1/2 the detection limit.
Sediment Summary: Data Summary
5/7/2002
-------
Table 5-3
Summary of Fish Tissue Data
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Parameter
Arsenic
Cadmium
Copper
Station ID
BR-1
BR-2
BR-1
BR-2
BR-1
BR-2
Species
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Sample ID
BR-1-1
BR-1-2
BR-1-3
BR-1-4
BR-1-5
BR-1-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-1-1
BR-1-2
BR-1-3
BR-1-4
BR-1-5
BR-1-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-1-1
BR-1-2
BR-1-3
BR-1-4
BR-1-5
BR-1-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
Concentration (mg/kg dw)
Fillet
6.5E-01
1.4E+00
5.6E-01
4.6E-01
1.1E+00
3.4E-01
l.OE-02
1.2E-02
1.2E-02
7.9E-03
9.8E-03
l.OE-02
9.2E-03
1.1E-02
1.1E-02
1.1E-02
5.6E-02
9.7E-02
7.3E-03
4.5E-03
4.7E-03
4.9E-03
4.3E-03
3.6E-03
2.3E-02
1.2E-02
l.OE-02
2.0E-02
4.3E-02
1.8E-02
3.2E-02
3.9E-02
4.3E-02
2.4E-02
1.6E-02
2.8E-02
2.7E-01
2.7E-01
3.1E-01
2.9E-01
2.2E-01
4.6E-01
3.1E-01
3.4E-01
3.1E-01
6.7E-01
4.2E-01
3.9E-01
7.0E-01
3.1E-01
5.1E-01
4.5E-01
2.5E-01
3.6E-01
Gonad
3.1E-02
2.1E-01
l.OE-02
8.9E-03
1.4E-01
9.3E-03
8.6E-03
8.9E-03
1.5E-02
9.8E-03
1.4E-01
2.1E-01
1.2E-02
3.2E-02
1.1E-02
3.2E-02
6.9E-02
1.1E-02
1.3E-01
1.1E+00
2.9E-02
1.9E-02
3.7E-01
2.9E-02
1.6E-01
9.0E-02
3.4E-01
6.7E-02
2.1E-01
2.8E-01
1.8E+00
2.3E+00
1.9E-01
2.7E-01
4.1E-01
2.4E-01
l.OE+00
2.7E+00
7.1E+00
4.2E+00
1.9E+00
l.OE+01
4.1E-01
8.8E+00
1.1E+00
7.4E+00
1.2E+01
2.6E+00
l.OE+00
1.2E+00
4.8E+00
4.3E+00
2.2E+00
5.3E+00
Kidney
1.3E-02
2.2E-02
2.6E-02
1.9E-02
1.6E-02
3.2E-02
1.1E-02
7.2E-02
6.2E-02
1.5E-02
2.1E-01
4.2E-01
1.1E-02
1.8E-02
2.8E-02
5.9E-02
1.2E-02
1.6E-02
1.9E+00
l.OE+01
3.5E+00
1.7E+00
3.8E+00
2.8E+00
1.1E+01
5.1E+01
2.1E+01
4.1E+00
2.4E+01
1.6E+02
3.0E+01
5.8E+01
6.4E+01
4.1E+01
1.4E+01
1.9E+01
1.5E+00
3.4E+00
3.6E+00
2.1E+00
2.3E+00
3.3E+00
2.0E+00
3.2E+01
1.9E+01
4.2E+01
8.2E+00
1.1E+02
8.3E+00
l.OE+01
1.3E+01
1.3E+01
9.5E+00
7.5E+00
Liver
l.OE-02
l.OE-02
1.1E-02
1.1E-02
1.8E-02
3.2E-02
2.3E-02
1.8E-02
3.5E-02
3.1E-02
7.9E-02
8.9E-02
1.2E-02
2.4E-02
1.2E-02
3.2E-02
1.1E-02
1.3E-02
1.4E+00
1.9E+00
1.2E+00
7.8E-01
1.9E+00
1.7E+00
5.8E+00
2.0E+00
2.4E+00
2.3E+01
4.6E+00
3.2E+00
8.5E+00
9.3E+00
6.7E+00
4.3E+00
2.4E+00
3.5E+00
2.8E+02
3.0E+02
1.5E+02
1.4E+02
5.2E+02
6.2E+02
4.4E+01
2.2E+01
8.5E+01
6.5E+00
4.2E+01
l.OE+02
6.8E+01
3.3E+02
8.8E+01
7.5E+01
2.7E+02
2.1E+01
Fish Tissue Summary: Data Summary
5/8/2002
-------
Table 5-3 (continued)
Summary of Fish Tissue Data
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Parameter
Lead
Manganese
Zinc
Station ID
BR-1
BR-2
BR-1
BR-2
BR-1
BR-2
Species
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Sample ID
BR-1-1
BR-1 -2
BR-1 -3
BR-1 -4
BR-1 -5
BR-1 -6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-1-1
BR-1 -2
BR-1 -3
BR-1 -4
BR-1 -5
BR-1 -6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-1-1
BR-1 -2
BR-1 -3
BR-1 -4
BR-1 -5
BR-1 -6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
Concentration (mg/kg dw)
Fillet
2.3E-02
1.1E-02
1.2E-02
6.1E-02
1.1E-02
2.6E-02
2.3E-02
1.2E-02
1.2E-02
6.8E-02
2.5E-02
l.OE-02
9.2E-03
7.7E-02
2.7E-02
4.2E-02
2.6E-02
6.4E-02
2.1E-01
1.5E-01
9.8E-02
l.OE+00
9.3E-01
2.6E-01
1.6E-01
1.4E-01
1.4E-01
4.6E-01
2.7E-01
9.2E-02
l.OE-01
4.9E-01
2.0E-01
2.0E-01
1.4E-01
3.3E-01
5.1E+00
4.9E+00
3.6E+00
7.9E+00
5.2E+00
6.3E+00
6.7E+00
8.5E+00
6.0E+00
8.3E+00
9.9E+00
7.6E+00
5.0E+00
7.3E+00
5.4E+00
9.0E+00
9.4E+00
7.8E+00
Gonad
6.7E-02
2.1E-01
4.8E-02
2.6E-02
1.4E-01
9.3E-03
2.9E-02
2.6E-02
1.5E-02
4.8E-02
1.4E-01
2.1E-01
2.7E-02
3.2E-02
3.0E-02
3.2E-02
1.7E-01
4.1E-02
5.6E-01
1.6E+00
1.2E+01
8.9E+00
1.1E+00
1.4E+01
3.3E-01
1.5E+00
2.7E-01
1.9E+00
4.0E+00
7.6E-01
3.8E-01
4.7E-01
2.0E+00
4.8E-01
1.1E+00
2.4E+00
3.2E+01
2.4E+02
8.7E+01
5.9E+01
1.7E+02
6.0E+01
1.9E+01
7.0E+01
2.3E+01
7.8E+01
l.OE+02
5.5E+01
1.3E+02
1.2E+02
7.3E+01
3.3E+01
1.9E+02
9.7E+01
Kidney
7.3E-01
7.3E-01
4.9E-01
7.1E-01
2.6E-01
2.8E-01
1.2E+00
1.2E+00
4.7E-01
1.3E-01
6.2E-01
3.1E+00
1.8E+00
2.8E+00
1.7E+00
1.9E+00
1.7E+00
7.0E-01
l.OE+00
2.9E+00
1.6E+00
1.5E+00
1.6E+00
1.8E+00
9.0E-01
1.8E+00
1.5E+00
2.8E+00
2.3E+00
8.6E+00
9.2E-01
1.3E+00
1.2E+00
2.0E+00
1.6E+00
1.2E+00
2.3E+01
4.3E+01
3.9E+01
2.9E+01
2.9E+01
4.0E+01
6.8E+01
1.7E+02
7.9E+01
9.6E+01
2.7E+02
5.9E+02
1.1E+02
1.2E+02
1.1E+02
1.1E+02
6.3E+01
5.2E+01
Liver
9.8E-02
5.2E-02
4.6E-02
1.7E-01
7.7E-02
3.2E-02
3.2E-01
1.4E-01
1.4E-01
7.3E-01
4.1E-01
8.9E-02
1.2E-01
1.8E-01
l.OE-01
l.OE-01
9.8E-02
9.8E-02
1.8E+00
2.0E+00
2.7E+00
3.2E+00
2.4E+00
3.7E+00
2.2E+00
3.1E+00
2.3E+00
2.0E+00
3.3E+00
3.9E+00
1.8E+00
2.9E+00
1.9E+00
2.5E+00
1.4E+00
2.2E+00
2.3E+01
2.5E+01
2.5E+01
2.4E+01
3.7E+01
4.0E+01
8.6E+01
1.1E+02
8.2E+01
7.5E+01
1.5E+02
1.5E+02
3.8E+01
5.3E+01
3.5E+01
4.2E+01
3.5E+01
4.1E+01
Non-detects were evaluated at 1/2 the detection limit.
All values shown to two significant figures.
Fish Tissue Summary: Data Summary
5/7/2002
Page 2 of2
-------
Table 5-4
Surface Water Exposures for Wildlife
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Panel A: Exposure Point Concentrations
COPCs
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Exposure Point Concentration (EPC) in Surface Water (ug/L)
French Gulch
Reference
356
0.42
6.4
198
0.10
95
Discharge
114,510
22,500
5,490
1,276,690
400
3,538,000
North Branch
French Gulch
463
87
463
74,510
0.10
177,294
South Branch
French Gulch
25
2.8
2.9
61
na
2,359
French Gulch
140
6.3
10
736
na
2,539
Blue River
Reference
184
0.16
1.0
22
na
24
Blue River
222
2.2
5.3
77
na
1,075
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Panel B: Dose to Mink
COPCs
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Dose (mg/kg BW/day)
French Gulch
Reference
3.7E-02
4.4E-05
6.7E-04
2.1E-02
l.OE-05
l.OE-02
Discharge
1.2E+01
2.4E+00
5.8E-01
1.3E+02
4.2E-02
3.7E+02
North Branch
French Gulch
4.9E-02
9.2E-03
4.9E-02
7.8E+00
l.OE-05
1.9E+01
South Branch
French Gulch
2.6E-03
2.9E-04
3.0E-04
6.4E-03
na
2.5E-01
French Gulch
1.5E-02
6.7E-04
1.1E-03
7.7E-02
na
2.7E-01
Blue River
Reference
1.9E-02
1.7E-05
1.1E-04
2.3E-03
na
2.5E-03
Blue River
2.3E-02
2.3E-04
5.5E-04
8.1E-03
na
1.1E-01
Panel C: Dose to Great Blue Heron
COPCs
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Dose (mg/kg BW/day)
French Gulch
Reference
1.6E-02
1.9E-05
2.8E-04
8.8E-03
4.5E-06
4.2E-03
Discharge
5.1E+00
l.OE+00
2.4E-01
5.7E+01
1.8E-02
1.6E+02
North Branch
French Gulch
2.1E-02
3.9E-03
2.1E-02
3.3E+00
4.5E-06
7.9E+00
South Branch
French Gulch
1.1E-03
1.3E-04
1.3E-04
2.7E-03
na
1.1E-01
French Gulch
6.2E-03
2.8E-04
4.6E-04
3.3E-02
na
1.1E-01
Blue River
Reference
8.2E-03
7.2E-06
4.5E-05
9.9E-04
na
1.1E-03
Blue River
9.9E-03
9.9E-05
2.3E-04
3.4E-03
na
4.8E-02
Dose = EPC * Intake Rate / Body Weight
SW EPCs for Wildlife: Exposure Table
5/7/2002
-------
Table 5-5
Sediment Exposures for Wildlife
Ecological Risk Assessment for the French Gulch/WeMngton-Oro Mine Site
Breckenridge, Colorado
Panel A: Exposure Point Concentrations
COPCs
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Exposure Point Concentration (EPC) in Sediment (mg/kg)
French Gulch
Reference
80,000
62
6.1
54
66
380
1,300
0.27
6.0
2.0
780
North Branch
French Gulch
66,000
180
210
40
490
6,500
12,000
0.35
16
2.3
35,000
South Branch
French Gulch
na
171
107
na
na
3,389
na
na
na
na
19,704
French Gulch
73,000
120
82
53
320
2,300
9,100
0.29
10
2.1
18,000
Blue River
Reference
78,000
13
2.8
63
45
160
1,300
0.10
5.0
0.40
600
Blue River
83,000
24
15
82
110
640
1,600
0.25
7.0
1.1
3,000
na = not analyzed
Non-detects were evaluated at 1/2 the detection limit.
Panel B: Dose to Mink
COPCs
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Dose (mg/kg BW/day)
French Gulch
Reference
2.8E+01
2.2E-02
2.1E-03
1.9E-02
2.3E-02
1.3E-01
4.6E-01
9.5E-05
2.1E-03
7.0E-04
2.7E-01
North Branch
French Gulch
2.3E+01
6.3E-02
7.4E-02
1.4E-02
1.7E-01
2.3E+00
4.2E+00
1.2E-04
5.6E-03
8.1E-04
1.2E+01
South Branch
French Gulch
na
6.0E-02
3.8E-02
na
na
1.2E+00
na
na
na
na
6.9E+00
French Gulch
2.6E+01
4.2E-02
2.9E-02
1.9E-02
1.1E-01
8.1E-01
3.2E+00
l.OE-04
3.5E-03
7.4E-04
6.3E+00
Blue River
Reference
2.7E+01
4.6E-03
9.9E-04
2.2E-02
1.6E-02
5.6E-02
4.6E-01
3.5E-05
1.8E-03
1.4E-04
2.1E-01
Blue River
2.9E+01
8.5E-03
5.3E-03
2.9E-02
3.9E-02
2.3E-01
5.6E-01
8.8E-05
2.5E-03
3.9E-04
1.1E+00
Panel C: Dose to Great Blue Heron
COPCs
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Dose (mg/kg BW/day)
French Gulch
Reference
3.4E+01
2.6E-02
2.6E-03
2.3E-02
2.8E-02
1.6E-01
5.5E-01
1.1E-04
2.5E-03
8.4E-04
3.3E-01
North Branch
French Gulch
2.8E+01
7.6E-02
8.9E-02
1.7E-02
2.1E-01
2.7E+00
5.1E+00
1.5E-04
6.8E-03
9.7E-04
1.5E+01
South Branch
French Gulch
na
7.2E-02
4.5E-02
na
na
1.4E+00
na
na
na
na
8.3E+00
French Gulch
3.1E+01
5.1E-02
3.5E-02
2.2E-02
1.4E-01
9.7E-01
3.8E+00
1.2E-04
4.2E-03
8.9E-04
7.6E+00
Blue River
Reference
3.3E+01
5.5E-03
1.2E-03
2.7E-02
1.9E-02
6.8E-02
5.5E-01
4.2E-05
2.1E-03
1.7E-04
2.5E-01
Blue River
3.5E+01
l.OE-02
6.3E-03
3.5E-02
4.6E-02
2.7E-01
6.8E-01
1.1E-04
3.0E-03
4.6E-04
1.3E+00
Dose = EPC * Intake Rate / Body Weight
Sed EPCs for Wildlife: Exposure Table
5/7/2002
-------
Table 5-6
Fish Tissue Exposures for Wildlife
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Panel A: Exposure Point Concentrations
COPCs
Arsenic
Cadmium
Copper
Lead
Manganese
Zinc
Exposure Point Concentration (EPC) in Fish Tissue
(mg/kg ww)
Blue River Reference
(BR-1)
0.311
0.032
2.28
0.013
0.29
2.37
Blue River (BR-2)
0.009
0.221
0.75
0.017
0.09
3 22
Non-detects were evaluated at 1/2 the detection limit.
Based on estimated whole body concentrations.
Panel B: Dose to Mink
COPCs
Arsenic
Cadmium
Copper
Lead
Manganese
Zinc
Dose (mg/kg BW/day)
Blue River Reference
(BR-1)
5.0E-02
5.2E-03
3.7E-01
2.2E-03
4.7E-02
3.8E-01
Blue River (BR-2)
1.4E-03
3.5E-02
1.2E-01
2.8E-03
1.5E-02
5.2E-01
Panel C: Dose to Great Blue Heron
COPCs
Arsenic
Cadmium
Copper
Lead
Manganese
Zinc
Dose (mg/kg BW/day)
Blue River Reference
(BR-1)
5.5E-02
5.7E-03
4.0E-01
2.4E-03
5.2E-02
4.2E-01
Blue River (BR-2)
1.5E-03
3.9E-02
1.3E-01
3.0E-03
1.7E-02
5.7E-01
Dose = EPC * Intake Rate / Body Weight
Fish Tissue EPCs for Wildlife: Exposure Table
5/8/2002
-------
Table 6-1
Ambient Water Quality Criteria (AWQC) for Aquatic Receptors
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Basic Equation for Hardness-Dependant COPCs:
AWQC Dissolved = exp[a*ln(Hardness)+b] * [m-n*ln(Hardness)]
COPC
Aluminum
Cadmium
Copper
Iron
Lead
Mercury
Nickel
Silver
Zinc
Acute
a
na
1.0166
0.9422
na
1.273
na
0.8460
1.72
0.8473
b
na
-3.924
-1.700
na
-1.460
na
2.255
-6.52
0.8840
m
1.0
1.137
0.960
1.0
1.462
0.850
0.998
0.850
0.978
n
0
0.0418
0
0
0.1457
0
0
0
0
Chronic
a
na
0.7409
0.8545
na
1.273
na
0.8460
na
0.8473
b
na
-4.719
-1.702
na
-4.705
na
0.0584
na
0.8840
m
1.0
1.102
0.960
1.0
1.462
0.850
0.997
0.850
0.986
n
0
0.0418
0
0
0.1457
0
0
0
0
AWQC Upper Hardness
Limits (mg/L as CaCO3)
Acute
na
360
400
na
360
na
360
350
500
Chronic
na
209
211
na
151
na
210
350
211
AWQC Dissolved (ug/L) at
Hardness = 100
Acute
750
2.01
13
2000
64.6
1.19
468
3.4
117
Chronic
87
0.26
9
1000
2.5
0.6545
52
1.7
117
na = not hardness dependant
AWQC Source: EPA (1999)
Cadmium AWQC Source: EPA (2001)
Iron AWQC is not available for acute toxicity; assumed to be chronic * 2.
Silver AWQC is not available for chronic toxicity; assumed to be acute / 2.
Silver conversion factors (m,n) for total to dissolved and an upper hardness limit are not available for chronic toxicity; assumed to be equal to acute.
If measured station hardness is above the specified upper hardness limit, the applicable upper hardness limit is used to calculate the AWQC.
Revised Aquatic Risk_SW: AWQCs
5/7/2002
-------
Table 6-2
Reliability of Individual Consensus-Based Sediment Quality Guidelines
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
COPC
Arsenic
Cadmium
Chromium
Copper
Lead
Mercury
Nickel
Zinc
% of Samples
Correctly Predicted
to Be Non-Toxic
based on TEC
74%
80%
72%
82%
82%
34%
72%
82%
TEC
Reliable?
No
Yes
No
Yes
Yes
No
No
Yes
% of Samples
Correctly Predicted
to Be Toxic based on
PEC
77%
94%
92%
92%
90%
100%
91%
90%
PEC
Reliable?
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Source: MacDonald et al. (2000)
6.2 - SQG Reliability.wpd
-------
Table 6-3
Sediment Toxicity Benchmarks for Benthic Invertebrates
Baseline Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
COPC
Aluminum
Arsenic
Cadmium
Chromium
Copper
Iron
Lead
Manganese
Mercury
Nickel
Silver
Zinc
Selected Sediment Toxicity
Benchmark (mg/kg)
Low
13,500
9.79
0.99
93.4
31.6
188,400
35.8
631
0.18
22.7
0.73
121
High
73,160
33
4.98
111
149
289,900
128
4,460
1.06
48.6
3.7
459
Source
Ingersoll et al., 1996
MacDonald et al., 2000
MacDonald et al., 2000
MacDonald et al., 2000
MacDonald et al., 2000
Ingersoll et al., 1996
MacDonald et al., 2000
Ingersoll et al., 1996
MacDonald et al., 2000
MacDonald et al., 2000
MES, 1994 (Low); Long and
Morgan, 1995 (High)
MacDonald et al., 2000
MacDonald et al. (2000) ~ based on consensus-based TEC and PEC values.
Ingersoll et al. (1996) ~ based on the minimum and maximum reported values for 28 dayffyalella
azteca.
Long and Morgan (1995) ~ based on NOAA EPvM values.
MacDonald Environmental Sciences (MES) (1994) ~ based on Florida TEL value.
Revised Aquatic Risk_Sed: Sed Tox
5/7/2002
-------
Table 6-4
Summary of Selected Fish Tissue Burden TRVs
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
COPC
Arsenic
Cadmium
Copper
Lead
Zinc
Test Species
Rainbow Trout
Brook Trout
Rainbow Trout
Brook Trout
Rainbow Trout
Brook Trout
Brook Trout
Tissue Type
Whole Body
Kidney
Liver
Muscle
Egg
Kidney
Liver
Muscle
Kidney
Liver
Kidney
Liver
No-Effect Level
(mg/kg dw)
10
16
18.75
0.45
7
16.5
239
2.5
700
100
184.5
300
Source: Jarvinen and Ankley (1999).
See Appendix E for further details
Fish Tissue Burden TRVs: Summary
5/7/2002
-------
Table 6-5
Uncertainty Factors Used in Deriving Wildlife TRVs
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Category
A
B
C
D
Basis for
Uncertainty
Inter-taxon
Extrapolation
Exposure
Duration
Toxicological
Endpoint
Modifying
Factors
Description
Same species
Same genus, different species
Same family, different genus
Same order, different family
Same class, different order
Same phylum, different class
Chronic study, approximately steady-state
Subchronic studies, steady state not achieved
Subacute studies (7-29 days for terrestrial)
Acute studies (1-3 days for aquatic)
Peracute studies (less than 1 day, single dose)
NOEL for non-lethal sensitive endpoint
NOEL for lethality or severe endpoint
NOAEL for non-lethal sensitive endpoint
NOAEL for lethality or severe endpoint
LOEL for non-lethal sensitive endpoint
LOEL for lethality or severe endpoint
LOAEL for non-lethal sensitive endpoint
LOAEL for lethality or severe endpoint
PEL for non-lethal sensitive endpoint
PEL for lethality or severe endpoint
Endangered species
Threatened species
Listed species
Relevance of toxicological endpoint to assessment endpoints
Extrapolation from test conditions to site conditions
Relevance of exposure medium and co-contaminants
Relevance of mechanism to receptor of concern
Sensitivity of test species compared to receptor of concern
Reliability of methods used to estimate tissue levels
Differences in age, gender, development
Other factors
Uncertainty
Factor
1
2
3
4
5
Do not use
1
3
5
10
15
0.75 to 1
2
Ito2
3
2 to 3
5
3 to 5
10
5 to 10
15
2
1.5
1.25
Ito2
0.5 to 2
0.5 to 2
Ito2
0.5 to 2
Ito2
Ito2
0.5 to 2
TRY = Study Dose / Total UCF
Total UCF = A • B • C • D, where A = ai-a2-a3- -an
Table 6-5 Uncertainty Factors
-------
Table 6-6
Summary of TRVs for Wildlife Receptors
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Chemical
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
TRY
NOAEL
LOAEL
NOAEL
LOAEL
NOAEL
LOAEL
NOAEL
LOAEL
NOAEL
LOAEL
NOAEL
LOAEL
NOAEL
LOAEL
NOAEL
LOAEL
NOAEL
LOAEL
NOAEL
LOAEL
NOAEL
LOAEL
Mink
Diet
2.3
11.0
0.2
0.5
0.5
1.0
800
2400
9
13
0.31
0.61
18
57
1.4
4.1
0.01
0.26
0.08
0.13
311
933
Water
1.1
5.5
0.3
0.8
0.2
0.5
400
1200
18
26
0.16
0.31
8.8
28
0.7
2.1
0.02
0.52
0.04
0.07
156
467
Great Blue Heron
Diet
35
175
0.8
7.1
0.09
2.4
0.2
1.0
4.0
6.0
0.9
1.8
65
195
0.09
0.18
2.4
7.1
0.10
0.20
26
79
Water
18
88
0.41
3.5
0.04
1.2
0.1
0.5
2.0
3.0
0.4
0.9
33
98
0.05
0.09
1.2
3.5
0.05
0.10
13
39
All units in mg/kg BW/day
Wildlife TRVs: TRV Summary
5/7/2002
-------
Appendix A
Electronic Database - electronic files available on request
-------
This page intentionally left blank.
-------
Appendix B
Evaluation of Surface Water Data for Outliers
-------
This page intentionally left blank.
-------
47 Confirmed Outliers via Rosner Outlier Test*
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River
Blue River
Blue River
Blue River
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
Station ID
BR-1
BR-1
655
BR-1
BR-1
BR-1
BR-1
654
BR-Dillon
BR-2
BR-3
BR-2
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-10
FG-5.5
FG-8
FG-8
FG-8
FG-5
FG-8
FG-5
FG-5
FG-4
FG-4
FG-5
FG-4
FG-4
FG-4
FG-4
FG-5
FG-8
FG-4
FG-5
FG-8
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Total
Total
Dissolved
Dissolved
Dissolved
Total
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Dissolved
Dissolved
Dissolved
Total
Total
Total
Parameter
Cadmium
Iron
Iron
Lead
Lead
Lead
Lead
Zinc
Aluminum
Arsenic
Chromium
Manganese
Aluminum
Aluminum
Aluminum
Arsenic
Arsenic
Arsenic
Arsenic
Chromium
Chromium
Nickel
Nickel
Nickel
Sodium
Zinc
Zinc
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Arsenic
Arsenic
Arsenic
Cadmium
Copper
Iron
Iron
Lead
Manganese
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Concentration
(ug/L)
1.5
5
70
7.98
15.4
20
8
605
1
1.1
143
15000
80
111
634
0.25
0.25
0.4
0.4
30
90
15
21
85
4200
30
670
0.1
55
130
174
888
0.4
1.2
1.9
72
70
953.1
16000
360
1400
15
15
15
15
15
15
Outlier
Type
High
Low
High
High
High
High
High
High
Low
High
High
High
High
High
High
Low
Low
Low
Low
High
High
High
High
High
High
Low
Low
Low
High
High
High
High
Low
High
High
High
High
High
High
High
High
High
High
High
High
High
High
*Discharge and North Branch French Gulch measurements were retained due to high variability in source materials.
Total Outliers
High Outliers
Low Outliers
47
37
10
outlier graphs_table: Outliers
5/8/2002
-------
Measured Aluminum Concentrations (Total) in Surface Water
i nnnnnn
100000 -
j? 10000 -
o
U 1000 -
—
10 -
1
o
o
00
o
Discharge
o
^o
o o°
French
Gulch
O
0 0
AW O
Blue
River
O
o
000 °
Blue
River
Ref
%
O
& ^^ o
French
Gulch
Ref
ij.r»r»r»r»
iLT\J\J\J\J
120000 -
1* 100000 -
u
o 80000 -
S 60000 -
| 40000 -
J
20000 -
0 -
O
/s, /s^y^
~>^ Wr
Discharge
^^^_^^^^^^^
~^iPB^BHi^v~
N. Branch
French
Gulch
«**mm>
S. Branch
French
Gulch
WWM^VW7~
French
Gulch
/Ma^fc/S^fcA
^H^VPSMF^^~
Blue
River
>MKVMV^1flS
>JWAJI^>3V
Blue
River
Ref
/S /Kv /M^
S7 ^Rr VV
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Aluminum Concentrations (Dissolved) in Surface Water
100000 -,
10000 -
d
jf 1000 -
o
U 100 -
—
13
o
hJ
1 -
0.1 -
o
ooo o
O
o
xv^OOO
o o
o
'*
•
______ A
.*.
^m
N. Branch S. Branch
Discharge French French French
Gulch Gulch Gulch
0 g
Blue
River
O
o
Blue
River
Ref
O
00
o
French
Gulch
Ref
i
O
o
OJ
100000 -
80000 -
60000 -
40000 -
20000 -
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Antimony Concentrations (Total) in Surface Water
1 -,
i
o
U 0.1 -
13
o
o
-J
0.01 -
O
o o
o o
OO3>O
oooo
o
o
-------
Measured Antimony Concentrations (Dissolved) in Surface Water
1 -,
i
o
U 0.1 -
13
o
o
-J
0.01 -
OOO
o o
o o
0 0
oo oo
00
ooo o
<»»
o
oo o
4M&090*
O
O
o
o o
N. Branch S. Branch
Discharge French French French
Gulch Gulch Gulch
oo o o
o o
o
0400
o oo
Blue
River
oo
o o
o
o o oo
Blue
River
Ref
OOO
French
Gulch
Ref
07
0.6 -
I? 0.5 -
1 0.4-
0)
S 0.3 -
I °'2 '
J
0.1 -
Discharge
OOO
0 0
0° °0
00 00
N. Branch
French
Gulch
OO
oo o
o o
o
oo o
S. Branch
French
Gulch
«»coo»
0
o
o
o o
French
Gulch
OO O O
o o
o
ooso
o oo
Blue
River
OO
o o
o
O O 00
Blue
River
Ref
OOO
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Arsenic Concentrations (Total) in Surface Water
100 -,
1 10-
=
u
13
o
M !-
o
-J
0.1 -
V
0 0
o
ooo
o
c^ *o
^6 O
oV°
-
«.,
-w
N. Branch S. Branch
Discharge French French French Blue
Gulch Gulch Gulch Rlver
^^O 4B&O
Blue
River
Ref
O
French
Gulch
Ref
120
100 -
u 80 -
o
^ 60 H
=
J
40 -
20 -
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Arsenic Concentrations (Dissolved) in Surface Water
,00,
I 10-
o
0
u
—
13
o
5/5 1 -
M
O
hJ
0 1
V7. 1
O
o«»
o
0<> o<*>
o
o
o
o
oo
o
^ 4lfipO®&
Ovv v*
o
N.
o
^•Hae^
o o
Branch S. Br
OflMfM^
••
inch
B
<»
Discharge
0* 0
N. Branch
French
Gulch
4MdfeO&
S. Branch
French
Gulch
AOMHMA^
^^*^^n
French
Gulch
0MO|K^dP
Blue
River
ooo^
Blue
River
Ref
A^V O
^'^'"^
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Barium Concentrations (Dissolved) in Surface Water
,00
I
o
=
U 10 -
13
o
o
-J
1
1
O
o o o
N.
Branch S. Br
O
inch
0
O 0
o
0 °
0° 0
Discharge F h F h French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
50 -
S
^40-
o
=
0
a 30 "
o
c3 20 -
_a
J 10 -
Discharge
0 0°0
N. Branch
French
Gulch
S. Branch
French
Gulch
000 g
^ °
$
&.
0°
French
Gulch
O
0 0
o
Blue
River
O
0
Blue
River
Ref
& O
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Beryllium Concentrations (Dissolved) in Surface Water
1 -,
i
o
0
U
at
cS
o
O
-J
0.1 -
OO
OO OO
N. Branch S. Branch
Discharge French French French Blue
Gulch Gulch Gulch Rlver
O O
Blue
River
Ref
OO O
French
Gulch
Ref
Of.
.O
0.5 -
S
&OA-
O
=
0
^ 0.3 -
o
c3 °-2 -
_a
J o.i -
Discharge
OO
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
OO OO
Blue
River
O O
Blue
River
Ref
OO O
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Cadmium Concentrations (Total) in Surface Water
o
U
—
13
10000 -
1000 -
100 -
1 -
0.1 -
0.01 -
o oo
o
O O
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
25000 -,
3 20000 -
a 15000 -
O
U
Jj 10000 -
•_
a
nJ 5000 -
0 -
O
N. Branch S. Branch
Discharge French French French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Cadmium Concentrations (Dissolved) in Surface Water
o
U
o
M
O
hJ
10000 -
1000 -
100 -
0.1 -
0.01
o
o o
o
Ott O
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
25000 -,
3 20000 -
a 15000 -
O
U
Jj 10000 -
•_
a
nJ 5000 -
0 -
O
N. Branch S. Branch
Discharge French French French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Calcium Concentrations (Dissolved) in Surface Water
d
o
o
U
cS
o
o
-J
100000 -
10000 -
1000
100
10
1
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
500000 -
S
& 400000 -
=
o
^ 300000 -
0
£ 200000 -
a
"j
100000 -
o -1
O
O .A.
O
O
o
0
o
0 X^fev
£&>*
O4>
o
OA ^ 00
6v oS^
._...,.
$P0WPv
^toi^o
9B^v&
^^^
^KVtl^
<&<>OOjf»
O ^0^(9
1 1 1 1 1 1
N. Branch S. Branch
Discharge French French French Blue Blue French
~ , , ^11 Gulch River River Gulch
Gulch Gulch
Ref Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Chromium Concentrations (Total) in Surface Water
100-
f
=
0
U 1 -
—
13
o
£*
3 0.1 -
0 01
VJ.V7 1
O
<>o
o$o3&c^
*3>
Q CW^ >v
oxr
o
N. E
#2>0£
>v >v jfa
0 <>xv
__ 0
^ 00
o
ranch S. Bra
o
o
0
0 00
nch
Q O00DX^
O
^ A
o oo
o o
o o £
O ^/
0 °
0
o
o «t
ooo
Discharge French French French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
I20-
a 15 -
o
U
—
1 10 -
=
3 5 -
f\
\J
O
°0 0»
Discharge
0>0^^
/v ^iafc^. /v
T-T "HM^V V
N. Branch
French
Gulch
*?*<#
<3B& 0
/S Aft/s
v ^w
French
Gulch
O OOfiD^O
^O4|
^^" ** ^F
Blue
River
o o £
o ov
o o^ A^
Blue
River
Ref
O
O <»
000
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Chromium Concentrations (Dissolved) in Surface Water
i
o
U
o
-J
100 -
10 -
0.1 -
0.01
$0000
o o
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
1^f»
1OU
140 -
§ 12°-
^a,
¥ 10° "
0
^ 80 "
| 60-
.1 40 -
J
20 -
0 -
0000 O
Discharge
4tt^b&Mfr
^^^wwi^^^^^
N. Branch
French
Gulch
dJjrflgBlflft
S. Branch
French
Gulch
•
•
v^Dw^^B^^r
French
Gulch
•
4«fc**^
Blue
River
#%>qfe»
Blue
River
Ref
^ ^**^V^'"^
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Cobalt Concentrations (Dissolved) in Surface Water
10 -,
i
o
1 1-
0)
cs
o
o
-J
0.1 -
4» O O
o
o
ooo» «no
OOO
N. Branch S. Branch
Discharge French French French Blue
Gulch Gulch Gulch Rlver
o o
Blue
River
Ref
OOO
French
Gulch
Ref
"1 ^
^ 2 -
s
*'•>-
U
"3
u 1 -
•_
=
H-l 0.5 -
Discharge
«» o o
N. Branch
French
Gulch
S. Branch
French
Gulch
O
o
oooot «oo
French
Gulch
OOO
Blue
River
O O
Blue
River
Ref
OOO
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Copper Concentrations (Total) in Surface Water
1 f»f»f»f» •*•
1UUUU ~~i
1000 -
i
^s,
tT 100 -
o
u
0)
3 10 -
o
J 1 -
0 1
V7. 1
O
o
oo o
o
Ao o
o oo o
00°
**38?
oo^ o
o
oooco
N. Br<
B
0 00
O. AO
*«a»4»o
gpooooooo
nch S. Bran
<*> o
<°^ ^i
ojo^
.A.O.M.O
V V
OO O
o
*Jso$
A^^o
°
«k%%°
^^ ^^k. .^F
^^oo v^^^
Xr
Discharge F h F h French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
10000 -
S
^ 8000 -
o
=
0
^ 6000 -
o
£ 4000 -
_a
^ 2000 -
O
Discharg
N. Brand
3 French
Gulch
i S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Copper Concentrations (Dissolved) in Surface Water
10000
i
o
U
—
13
o
1000 -
100 -
10 -
0.1
O
ooo
e
o
<$*><**#
00
OOO
0 .0
o o
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
8000 -
S 7000 -
<£- 6000 -
o
£ 5000 -
| 4000 -
£ 3000 -
•J 2000 -
1000 -
O
Discharg
N. Branc
e French
Gulch
i S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Iron Concentrations (Total) in Surface Water
i
o
o
U
—
13
100000
10000
1000
10 -
o
o
$
o
o
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
900000 -,
800000 -
S 700000 -
<£- 600000 -
o
£ 500000 -
| 400000 -
£ 300000 -
0)
•J 200000 -
100000 -
O
O
o
o
0 0
&*
N. Branch S. Branch
Discharge French French French Blue Blue French
~ , , ^11 Gulch River River Gulch
Gulch Gulch
Ref Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Iron Concentrations (Dissolved) in Surface Water
100000 -
d
js 10000 -
o
=
U 1000 -
—
o
5/5 inn
^
10 -
i
i
O
o
o
o
o o
Discharg
oo o
$$$9fc
0 0
o
<*»
OA-^ XK/U^
VPRr ^*jO^
O
o o
N. Branc
e T- i
French
Gulch
o
^**
O^DOflfco
o
h S. Branch
French
Gulch
O
.0
^Y^TVv
$j$p
. v >yv
2?*t
4MO4BOO
O O
o
Blue
River
g
o o ooo
1
Blue
River
Ref
O
0 0
0 00 £
o
o o
French
Gulch
Ref
800000 -,
700000 -
^ 600000 -
« 500000 -
0
^ 400000 -
<% 300000 -
.1 200000 -
J
100000 -
0 -
o
O
0°
*
^JH
N. Branch S. Branch
Discharge French French French Blue Blue French
^ , , ^11 Gulch River River Gulch
Gulch Gulch
Ref Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Lead Concentrations (Total) in Surface Water
i
o
U
3
1000 -
100 -
10 -
0.1
o
o
0 0
oo
0 0
O
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
^f»f»f»
\J\J\J\J
^ 5000 -
^ 4000 -
0
^j 3000 -
£ 2000 -
_a
J 1000 -
0 -
o
y\ /^^ /S/S
~^^ S«r W
Discharg
^A 0
^WBBBQiR^v^
N. Branc
e French
Gulch
•
i S. Branch
French
Gulch
f\
-------
Measured Lead Concentrations (Dissolved) in Surface Water
1000
i
0
u
0)
o
-J
100 -
10 -
0.1 -
0.01
O O
oo
4» 00
O <» OO
O O
ooo
OfrO 0
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
Qf\f\
Q\J\J
700 -
§600-
¥ 50° "
0
^j 400 -
o
™ 300 -
c3
.1 200 -
J
100 -
~
O
Discharg
o
o
. §jf$ 0
i.o^f
-------
Measured Magnesium Concentrations (Dissolved) in Surface Water
d
o
U
cS
O
100000 -
10000 -
1000
100
10 -
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
1200000
1000000 -
^ 800000 -
o
^ 600000
=
J
400000 -
200000 -
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Manganese Concentrations (Total) in Surface Water
o
o
U
1000000 -
100000 -
10000 -
1000 -
100 -
10 -
1 -
Discharge
000 0
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
1400000 -,
1200000 -
1* 1000000 -
o
o 800000 -
S 600000 -
| 400000 -
J
200000 -
0 -
O
^ A^
O
^
V>P O~| ^MKMM>WV | •
N. Branch S. Branch
Discharge Prpnrh FrPnrh
_ /^^•MMMBMk-
~v^HKnJVBV~
French
dM»
Blue
«••«
Blue
/MMOCWMyMV
SMBOCA^Knllr
French
Gulch' Gulch' Gulch Rlver Rlver Gulch
Ref Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Manganese Concentrations (Dissolved) in Surface Water
10000000
1000000 -
jj 100000 -
^ 10000 -
=
o
U 1000 -
OJ
Jrt
5 100 -
VI
6X
5 10 -
1
0 1
\J . 1
o
0 °
o ^^^
o ^ft?^
o ^<^
>v O v5o
O C"'
o
0 0
o o
^S^i^^
ff ^|r^4dk
^
ooco ^
A^
J ^^ >JWC >V /^^
^09^ o
O^y^S A /^& O?
A V Tifcrm> WMK^DvSoL
^S^wC O ^ySflfflS8^
2^ ^> 4|MH»
^teo<^l^
O
N. Branch S. Branch
>v
/sycQ^^A
^P"W
$ Ofe
o
\°
o *S
0
Discharge French French French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
12«,000
1000000 -
S
<£- 800000 -
o
=
0
^j 600000 -
o
£ 400000 -
_a
^ 200000 -
o -1
O
/sQ/v A
V V V"
O
o
jd^^^^MMS^tf^
W^^BfF^
•••iiri
«••••»
«••••»
«8»O
N. Branch S. Branch
Discharge French French French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Molybdenum Concentrations (Dissolved) in Surface Water
10 -,
i
o
1 1-
0)
cs
o
o
-J
0.1 -
O OO
o
o
OMMMHMO
OOO O
N. Branch S. Branch
Discharge French French French Blue
Gulch Gulch Gulch Rlver
O O
Blue
River
Ref
O OO
French
Gulch
Ref
in
9 -
! «-
^ _
CS
CS -5
^ J
a
nJ 2 -
1
Discharge
O OO
N. Branch
French
Gulch
S. Branch
French
Gulch
O
o
«00«K»00
French
Gulch
OOO O
Blue
River
O O
Blue
River
Ref
O OO
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Nickel Concentrations (Total) in Surface Water
,0000-
jj 1000 -
^3,
o
U 100 -
—
13
o
C/5
6X
j 10 -
1
1
O
0
o
oo o
o ^
o
o
&s2&£
o
oooooo6b
o <»o
o ^& o
Discharge French French French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
u
1800
1600 H
1400
1200 -
1000 -
800 -
600 -
400 -
200 -
0
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Nickel Concentrations (Dissolved) in Surface Water
1000 -
1
tT 100 -
=
0
u
3 10 -
V
^^
o
-J
1 -
0 1
\J. 1
O
o
ooo
o
0 0
&>o%>
iQ^S ^r
O
°00«£
^oo§
00
ooo
N. Ere
• •
Ull^&lf
"•
nch S. Branch
o oo
^HSO&bfr
o
00 O
o
oooa°o°>
o o
ooo
ooo
o oo
Discharge French French French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Phosphorus Concentrations (Total) in Surface Water
100 -,
i
o
U 10 -
0)
cs
o
o
-J
1 -
O O
o o&
o
o
o
*<****>
o oo
N. Branch S. Branch
Discharge French French French Blue
Gulch Gulch Gulch Rlver
o
Blue
River
Ref
O O
French
Gulch
Ref
70 -
§60-
¥ 50 "
0
^ 40 "
o
<£ 30 -
.1 20 -
J
10 -
fl
\J
Discharge
o o
o
N. Branch
French
Gulch
S. Branch
French
Gulch
O
o
o
04MOMDO
French
Gulch
O 4)0
Blue
River
O
Blue
River
Ref
O O
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Phosphorus Concentrations (Dissolved) in Surface Water
100 -,
i
o
U 10 -
0)
c5
o
o
-J
1 -
O
0
4>
o
COOMMO&O
-------
Measured Potassium Concentrations (Total) in Surface Water
10000 -,
jj 1000 -
^
o
U 100 -
0)
cS
o
!/5
M
3 10-
1 -
V
oo^o
o
000
<*> <0
«»004>
o
0000 0
N. Branch S. Branch
Discharge French French French
Gulch Gulch Gulch
0<> 0
0000 «X>
Blue
River
o
«» oo
Blue
River
Ref
OO O
French
Gulch
Ref
5000 -
S
<£- 4000 -
o
0
^ 3000 -
o
£ 2000 -
J 1000 -
Discharg
o
o
o
$°
o
o o o
N. Branc
e French
Gulch
O
oo
i S. Branch
French
Gulch
O
oooo o
French
Gulch
<>o °
oooo ooo
Blue
River
o
^^ OO
Blue
River
Ref
OO O
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Potassium Concentrations (Dissolved) in Surface Water
10000 -,
jj 1000 -
^
o
U 100 -
0)
cS
o
!/5
M
3 10-
1 -
o
0°
%*>**»
a o*o<>
°0oo
*»
*»
N. Branch S. Branch
Discharge French French French
Gulch Gulch Gulch
<*%***
Blue
River
0O OA^A
Blue
River
Ref
0 $
French
Gulch
Ref
&f»f»f»
*
i S. Branch
French
Gulch
&&J$8&
~^ar^
French
Gulch
OC&rfS£g
Blue
River
O OA.^
o§x%
Blue
River
Ref
O O^
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Selenium Concentrations (Total) in Surface Water
10 -,
i
o
1 1-
0)
cs
o
o
-J
0.1 -
O
<*<**>
e«**oo
oooo
N. Branch
French
Gulch
O OOO
S. Branch
French
Gulch
OOOO
French
Gulch
OOMtt O
Blue
River
00&O0
Blue
River
Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Selenium Concentrations (Dissolved) in Surface Water
1 -,
i
o
0
U
at
cS
o
!/5
M
O
hJ
0.1 -
>v >v
000
N. Branch
French
Gulch
O ^
S. Branch
French
Gulch
4MNMOBO
French
Gulch
O O
4»0«0
Blue
River
oo ooo
Blue
River
Ref
00 O
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Silicone Concentrations (Dissolved) in Surface Water
10000 -,
jj 1000 -
o
U 100 -
0)
cS
o
5 10 -
1 -
00 oO
N. Branch S. Branch
Discharge French French French
Gulch Gulch Gulch
o <£&
Blue
River
O O
Blue
River
Ref
<0 0
French
Gulch
Ref
10000 -
S
& 8000 -
o
0
^j 6000 -
o
£ 4000 -
_a
^ 2000 -
Discharg
o° o
o
N. Brand
3 French
Gulch
i S. Branch
French
Gulch
o <>o
o o
o
French
Gulch
o °<>
o
Blue
River
o o
Blue
River
Ref
0 0
o
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Silver Concentrations (Total) in Surface Water
inn
1UU H
1 10-
o
=
0
U
—
13
o
Cfl 1 -
M
O
hJ
0 1
V7. 1
0
O OO
o
A
o
o
t»
OOOOOOO&
njjnfiTfc 4KWS
^^ ^W/V
N.
o
^^o
^ft/v yv dtv A
MCV V Vlr %^^
3 ranch S. Br
o
OO O O
»> A AA
' V V V
inch
O OO
o o
0» rfvys /KV
' ^PW W
o
o *
A A ^V%
O OO
A <"^fc ilfMlTk
Discharge French French French Blue Blue French
~ , , /^ i i Gulch River River Gulch
Gulch Gulch
Ref Ref
S
25 -
u
o
=
J
20 -
5 -
0
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Silver Concentrations (Dissolved) in Surface Water
10 -,
i
o
1 1-
0)
cS
o
o
-J
0.1 -
0
OO O
o
©,
O
ooo o o
o
o
o o
OOflfr O OO&O
A A^UB.A M^. | -A. -A. **••
ooo«M8«»
oo o
^^. >V -Jk.
O OXOO
0*0 0
-*• •"*• AA A rtft
N. Branch S. Branch
Discharge French French French Blue
Gulch Gulch Gulch Rlver
oo o
o «&
1 /% It^t
V ^^^"
Blue
River
Ref
o o»<»
French
Gulch
Ref
3 -
I1 2.5 -
o
S 1.5 -
CS i
o> 1 -
J
0.5 -
O
$° 0°
Discharge
o
oooo o
&<&»?<&>
N. Branch
French
Gulch
O O
§§o
S. Branch
French
Gulch
OOOOMMtt
oo^oo o
French
Gulch
O OXOO
ttttooofe
Blue
River
OO O
o #>«o
Blue
River
Ref
0 0»<»
OOOO 00
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Sodium Concentrations (Dissolved) in Surface Water
100000
i
o
U
0)
10000 -
1000 -
100 -
10 -
French
Gulch
Ref
90000 -,
80000 -
S 70000 -
<£- 60000 -
£ 50000 -
| 40000 -
£ 30000 -
•J 20000 -
10000 -
0 -
O
o o
Discharg
o
OO o
^rw !
N. Branch S. Branch
French French
Gulch Gulch
.j^A^^t— ^1
«•*»»
French
Gulch
^^L^^^Q
^KQHKK
Blue
River
«dfco
Blue
River
Ref
«*>«*»
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Thallium Concentrations (Total) in Surface Water
1 -,
i
o
U 0.1 -
13
o
o
-J
0.01 -
O
o
o
o
OOO OO
«ooooo»
OO OO
N. Branch S. Branch
Discharge French French French
Gulch Gulch Gulch
O4»«OO
Blue
River
& 4&
Blue
River
Ref
French
Gulch
Ref
Of.
.O
0.5 -
S
&OA-
o
=
0
U
« 0.3 -
13
o
c3 °-2 -
=
J
0.1 -
Discharge
0
OO
0
o
o
o
OOO OO
N. Branch
French
Gulch
-------
Measured Thallium Concentrations (Dissolved) in Surface Water
1 -,
i
o
U 0.1 -
13
o
o
-J
0.01 -
O
o o o
o o
o
o oo
o
o o
«£>OOO
o o oo
o o
o o
N. Branch S. Branch
Discharge French French French
Gulch Gulch Gulch
o
o coo
o o
Blue
River
oooo
ooo
Blue
River
Ref
French
Gulch
Ref
0.25 -
S
<£- 0.2 -
o
=
0
U
2 0.15 -
o
c3 O-1 -
^ 0.05 -
r»
\j
Discharge
o
ooo
o o
o
o oo
o
N. Branch
French
Gulch
O O
o
S. Branch
French
Gulch
O O
o o
French
Gulch
O O&
o o
Blue
River
OOOO
ooo
Blue
River
Ref
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Uranium Concentrations (Dissolved) in Surface Water
1 -,
i
o
0
U
at
cS
o
!/5
M
O
hJ
0.1 -
O
OOOO
N. Branch S. Branch
Discharge French French French Blue
Gulch Gulch Gulch Rlver
O O
Blue
River
Ref
O O
French
Gulch
Ref
Of.
.0
0.5 -
S
&OA-
o
=
0
^ 0.3 -
o
c3 °-2 -
_a
J o.i -
Discharge
O O^&
N. Branch
French
Gulch
S. Branch
French
Gulch
OttMdOO«&
French
Gulch
OOOO
Blue
River
O O
Blue
River
Ref
O O
French
Gulch
Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Measured Zinc Concentrations (Total) in Surface Water
a
0
U
1000000 -
100000 -
10000 -
1000 -
100 -
10 -
1 -
o o
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
4000000 -,
3500000 -
^ 3000000 -
^s,
^ 2500000 -
0
^j 2000000 -
<% 1500000 -
.1 1000000 -
-J
500000 -
o -1
O
^ >W /v
V V NT
A
~^^HBWI^^y^
_4MCM9BflMMtt&-
~^IOCraMHBHMIr~
«••••»
4HMBBO
J^%
-------
Measured Zinc Concentrations (Dissolved) in Surface Water
o
o
U
1000000 -
100000 -
10000 -
1000 -
100 -
10 -
1 -
oo
0 %>
o o
Discharge
N. Branch
French
Gulch
S. Branch
French
Gulch
French
Gulch
Blue
River
Blue
River
Ref
French
Gulch
Ref
3500000 -,
3000000 -
1* 2500000 -
o 2000000 -
0)
S 1500000 -
•_
| 1000000 -
J
500000 -
o -1
O
/v /yv £±
V W ^r
<4>
WMJ£6_
~^i^^^^^^^9
••MUM
vmmmm
mmmmm
/mj^/v /mk
^JBVSr^JBV
N. Branch S. Branch
Discharge French French French Blue Blue French
~ , , ~ , , Gulch River River Gulch
Gulch Gulch
Ref Ref
Sampling measurement (not detects are presented as 1/2 the detection limit)
Confirmed as an outlier via Rosner outlier test and excluded from dataset
outliergraphs_table.xls: Figure
5/8/2002
-------
Appendix C
Selection of Chemicals of Potential Concern
-------
This page intentionally left blank.
-------
Appendix Cl
Selection of Surface Water COPCs for Aquatic Receptors
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Parameter
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Calcium
Chromium
Cobalt
Copper
Iron
Lead
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Potassium
Selenium
Silicone
Silver
Sodium
Thallium
Uranium
Zinc
Analysis
Type
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Number of
Detections
57
67
15
32
18
16
0
32
0
0
201
259
0
204
33
52
0
2
174
170
223
182
179
182
0
199
228
264
1
0
0
2
33
51
5
3
20
131
0
2
0
32
6
3
0
205
6
8
0
0
248
317
Number of
Samples
122
172
52
84
112
138
0
32
0
32
270
357
0
204
136
159
0
32
268
287
272
335
268
394
0
199
271
335
6
0
0
32
153
177
34
33
54
132
52
65
0
32
108
129
0
218
52
52
0
32
279
352
Detection
Frequency
(DF)
47%
39%
29%
38%
16%
12%
na
100%
na
0%
74%
73%
na
100%
24%
33%
na
6%
65%
59%
82%
54%
67%
46%
na
100%
84%
79%
17%
na
na
6%
22%
29%
15%
9%
37%
99%
0%
3%
na
100%
6%
2%
na
94%
12%
15%
na
0%
89%
90%
Mean
Detected
Cone
(ug/L)
2,246
1,542
0.2
0.3
9
6.3
na
23
na
na
127.4
91
na
58,953
0.5
0.8
na
2
65.2
57.0
18,098
24,333
57
16
na
19,922
10,729
9,768
400
na
na
6.0
142.9
84.3
32.00
16.67
2,070.0
1,078
na
1
na
7,894
5
i
na
3,200.7
0.3
0
na
na
28,985
24,180
Maximum
Detected
Cone (ug/L)
114,510
95,854
0.3
0.6
96
39
na
55
na
na
22,500.0
19,800
na
477,400
4.4
6.2
na
2
9,575.0
8,393.0
837,588
694,200
5,490
744
na
968,900
1,276,690
1,136,130
400
na
na
9.0
1,675.0
1,377.0
70.00
20.00
5,700.0
7,000
na
1
na
9,900
25
3
na
77,000.0
0.5
0
na
na
3,538,000
3,105,000
Mean Non-
Detected
Cone (ug/L)
22
21
0.1
0.3
1
0.5
na
na
na
1
0.1
0
na
na
2.1
1.9
na
1
1.0
0.9
31
17
1
1
na
na
13
7
0
na
na
0.5
6.4
5.8
5.00
5.00
500.0
500
1
1
na
na
0
0
na
1,500.0
0.1
0
na
0.5
5
5
Maximum Non
Detected Cone
(ug/L)
100
100
0.1
0.5
1
1
na
na
na
1
0.3
2
na
na
20.0
3.0
na
1
5.0
5.0
50
25
3
40
na
na
25
10
0
na
na
0.5
15.0
15.0
5.00
5.00
500.0
500
3
1
na
na
1
1
na
1,500.0
0.1
0
na
0.5
5
5
AWQC
Chronic
Benchmark
(ug/L)
87
87
na
na
150
150
na
na
na
na
0.2
0.2
na
na
49
42
na
na
5
5
1000
1000
1
1
na
na
na
na
1
1
na
na
29
29
na
na
na
na
5
5
na
na
1
1
na
na
na
na
na
na
67
66
Does cmpd
have an
TRY?
yes
yes
no
no
yes
yes
no
no
no
no
yes
yes
no
no
yes
yes
no
no
yes
yes
yes
yes
yes
yes
no
no
no
no
yes
yes
no
no
yes
yes
no
no
no
no
yes
yes
no
no
yes
yes
no
no
no
no
no
no
yes
yes
IsDF>
5%?
yes
yes
yes
yes
yes
yes
no
yes
no
no
yes
yes
no
yes
yes
yes
no
yes
yes
yes
yes
yes
yes
yes
no
yes
yes
yes
yes
no
no
yes
yes
yes
yes
yes
yes
yes
no
no
no
yes
yes
no
no
yes
yes
yes
no
no
yes
yes
Is Mean DL <
Benchmark?
yes
yes
yes
yes
yes
yes
no
no
no
yes
yes
no
no
no
yes
yes
no
yes
yes
yes
yes
yes
yes
yes
no
no
yes
yes
yes
no
no
yes
yes
yes
yes
yes
yes
yes
yes
yes
no
no
yes
yes
no
yes
yes
yes
no
yes
yes
yes
Is Max Detect >
Benchmark?
yes
yes
no
no
no
no
no
no
no
no
yes
yes
no
no
no
no
no
no
yes
yes
yes
yes
yes
yes
no
no
no
no
yes
yes
no
no
yes
yes
no
no
no
no
yes
no
no
no
yes
yes
no
no
no
no
no
no
yes
yes
Qual
Typel
0
1
0
1
1
0
1
0
1
0
0
0
1
1
0
1
0
1
1
0
1
0
1
1
1
0
Qual
Type 2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Quant
COPC
1
0
0
0
0
1
0
0
0
1
1
1
0
0
1
0
1
0
0
0
0
1
0
0
0
1
Not a
COPC
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
Revised SW COPC Screen: Aquatic_SW, 5/8/2002
-------
Appendix Cl
Selection of Surface Water COPCs for Wildlife Receptors
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Parameter
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Calcium
Chromium
Cobalt
Copper
Iron
Lead
Magnesium
Manganese
Mercury
Molybdenum
Nickel
Phosphorus
Potassium
Selenium
Silicone
Silver
Sodium
Thallium
Uranium
Zinc
Analysis
Type
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Total
Dissolved
Number of
Detections
57
67
15
32
18
16
0
32
0
0
201
259
0
204
33
52
0
2
174
170
223
182
179
182
0
199
228
264
1
0
0
2
33
51
5
3
20
131
0
2
0
32
6
3
0
205
6
8
0
0
248
317
Number of
Samples
122
172
52
84
112
138
0
32
0
32
270
357
0
204
136
159
0
32
268
287
272
335
268
394
0
199
271
335
6
0
0
32
153
177
34
33
54
132
52
65
0
32
108
129
0
218
52
52
0
32
279
352
Detection
Frequency
(DF)
47%
39%
29%
38%
16%
12%
na
100%
na
0%
74%
73%
na
100%
24%
33%
na
6%
65%
59%
82%
54%
67%
46%
na
100%
84%
79%
17%
na
na
6%
22%
29%
15%
9%
37%
99%
0%
3%
na
100%
6%
2%
na
94%
12%
15%
na
0%
89%
90%
Mean
Detected
Cone
(ug/L)
2,246
1,542
0.2
0.3
9
6.3
na
23
na
na
127.4
91
na
58,953
0.5
0.8
na
2
65.2
57.0
18,098
24,333
57
16
na
19,922
10,729
9,768
400
na
na
6.0
142.9
84.3
32.00
16.67
2,070.0
1,078
na
1
na
7,894
5
1
na
3,200.7
0.3
0
na
na
28,985
24,180
Maximum
Detected
Cone (ug/L)
114,510
95,854
0.3
0.6
96
39
na
55
na
na
22,500.0
19,800
na
477,400
4.4
6.2
na
2
9,575.0
8,393.0
837,588
694,200
5,490
744
na
968,900
1,276,690
1,136,130
400
na
na
9.0
1,675.0
1,377.0
70.00
20.00
5,700.0
7,000
na
1
na
9,900
25
3
na
77,000.0
0.5
0
na
na
3,538,000
3,105,000
Mean Non-
Detected
Cone (ug/L)
22
21
0.1
0.3
1
0.5
na
na
na
1
0.1
0
na
na
2.1
1.9
na
1
1.0
0.9
31
17
1
1
na
na
13
7
0
na
na
0.5
6.4
5.8
5.00
5.00
500.0
500
1
1
na
na
0
0
na
1,500.0
0.1
0
na
0.5
5
5
Maximum Non
Detected Cone
(ug/L)
100
100
0.1
0.5
1
1
na
na
na
1
0.3
2
na
na
20.0
3.0
na
1
5.0
5.0
50
25
3
40
na
na
25
10
0
na
na
0.5
15.0
15.0
5.00
5.00
500.0
500
3
1
na
na
1
1
na
1,500.0
0.1
0
na
0.5
5
5
Wildlife
Ingestion
Benchmark
(ug/L)
4474
4474
na
na
292
292
23100
23100
na
na
4132.0
4132.0
na
na
4300
4300
7670.00
7670.00
65200
65200
na
na
4860
4860
na
na
377000
377000
28
28
600.0
600.0
171360
171360
na
na
na
na
857
857
na
na
na
na
na
na
32
32
6995.0
6995.0
62300
62300
Is cmpd
essential
nutrient? "
no
no
no
no
no
no
no
no
no
no
no
no
yes
yes
no
no
no
no
no
no
no
no
no
no
yes
yes
no
no
no
no
no
no
no
no
no
no
yes
yes
no
no
no
no
no
no
yes
yes
no
no
no
no
no
no
Does cmpd
have an
TRY?
yes
yes
no
no
yes
yes
yes
yes
no
no
yes
yes
no
no
yes
yes
yes
yes
yes
yes
no
no
yes
yes
no
no
yes
yes
yes
yes
yes
yes
yes
yes
no
no
no
no
yes
yes
no
no
no
no
no
no
yes
yes
yes
yes
yes
yes
IsDF>
5%?
yes
yes
yes
yes
yes
yes
no
yes
no
no
yes
yes
no
yes
yes
yes
no
yes
yes
yes
yes
yes
yes
yes
no
yes
yes
yes
yes
no
no
yes
yes
yes
yes
yes
yes
yes
no
no
no
yes
yes
no
no
yes
yes
yes
no
no
yes
yes
Is Mean DL <
Benchmark?
yes
yes
yes
yes
yes
yes
no
no
no
yes
yes
yes
no
no
yes
yes
no
yes
yes
yes
yes
yes
yes
yes
no
no
yes
yes
yes
no
no
yes
yes
yes
yes
yes
yes
yes
yes
yes
no
no
yes
yes
no
yes
yes
yes
no
yes
yes
yes
Is Max Detect >
Benchmark?
yes
yes
no
no
no
no
yes
no
no
no
yes
yes
no
no
no
no
yes
no
no
no
no
no
yes
no
no
no
yes
yes
yes
yes
yes
no
no
no
no
no
no
no
yes
no
no
no
no
no
no
no
no
no
yes
yes
yes
yes
Qual
Typel
0
1
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
1
1
0
0
0
0
Qual
Type 2
0
0
0
1
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
0
Quant
COPC
1
0
0
0
0
1
0
0
0
0
0
1
0
1
1
0
0
0
0
0
0
0
0
0
0
1
Not a
COPC
0
0
1
0
0
0
1
1
0
1
0
0
1
0
0
0
1
0
1
1
0
0
1
1
0
0
a Essential nutrients are defined as: calcium, magnesium, potassium, and sodium (including dissolved state).
Revised SW COPC Screen: Wildlife_SW, 5/8/2002
-------
Appendix C2
Selection of Sediment COPCs for Aquatic Receptors
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Parameter
Aluminum
Arsenic
Cadmium
Chromium
Copper
Gold
Iron
Lead
Manganese
Mercury
Molybdenum
Nickel
Selenium
Silver
Zinc
Number of
Detections
10
20
20
10
10
7
20
20
10
10
10
10
10
20
20
Number of
Samples
10
20
20
10
10
10
20
20
10
10
10
10
10
20
20
Detection
Frequency
(DF)
100%
100%
100%
100%
100%
70%
100%
100%
100%
100%
100%
100%
100%
100%
100%
Mean
Detected
Cone
(mg/kg)
70,900
100.2
67
52.0
195
1.1
68,560
1,865.5
3,867
0.2
8
29
2
17
11,420
Maximum
Detected
Cone (mg/kg)
83,000
216.0
210
82.0
490
4.4
151,000
6,500.0
12,000
0.4
16
33
2
90
35,000
Mean Non-
Detected
Cone (mg/kg)
na
na
na
na
na
0.04
na
na
na
na
na
na
na
na
na
Maximum Non
Detected Cone
(mg/kg)
na
na
na
na
na
0.05
na
na
na
na
na
na
na
na
na
Aquatic
Benchmark
(mg/kg)
14000
10
1.0
43
32
na
19000
36
630
0.18
na
23
na
0.73
121
Does cmpd
have an
TRV?
yes
yes
yes
yes
yes
no
yes
yes
yes
yes
no
yes
no
yes
yes
IsDF>
5%?
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
Is Mean DL <
Benchmark?
no
no
no
no
no
yes
no
no
no
no
no
no
no
no
no
Is Max Detect >
Benchmark?
yes
yes
yes
yes
yes
no
yes
yes
yes
yes
no
yes
no
yes
yes
Qual
Typel
0
0
0
0
0
1
0
0
0
0
1
0
1
0
0
Qual
Typel
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Quant
COPC
1
1
1
1
1
0
1
1
1
1
0
1
0
1
1
Not a
COPC
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Total
12
Revised Sed COPC Screen: Aquatic_Sed, 5/8/2002
-------
Appendix C2
Selection of Sediment COPCs for Wildlife Receptors
Ecological Risk Assessment for the French Gulch/Wellington-Oro Mine Site
Breckenridge, Colorado
Parameter
Aluminum
Arsenic
Cadmium
Chromium
Copper
Gold
Iron
Lead
Manganese
Mercury
Molybdenum
Nickel
Selenium
Silver
Zinc
Number of
Detections
10
20
20
10
10
7
20
20
10
10
10
10
10
20
20
Number of
Samples
10
20
20
10
10
10
20
20
10
10
10
10
10
20
20
Detection
Frequency
(DF)
100%
100%
100%
100%
100%
70%
100%
100%
100%
100%
100%
100%
100%
100%
100%
Mean
Detected
Cone
(mg/kg)
70,900
100.2
67
52.0
195
1.1
68,560
1,865.5
3,867
0.2
8
29
2
17
11,420
Maximum
Detected
Cone (mg/kg)
83,000
216.0
210
82.0
490
4.4
151,000
6,500.0
12,000
0.4
16
33
2
90
35,000
Mean Non-
Detected
Cone (mg/kg)
na
na
na
na
na
0.04
na
na
na
na
na
na
na
na
na
Maximum Non-
Detected Cone
(mg/kg)
na
na
na
na
na
0.05
na
na
na
na
na
na
na
na
na
Wildlife
Benchmark
(mg/kg)
3.8
0.3
1.2
0.8
38.9
na
na
0.9
322
0.01
0.5
64.1
0.3
na
12.0
Is cmpd
essential
nutrient? a
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
Does cmpd
have an
TRY?
yes
yes
yes
yes
yes
no
no
yes
yes
yes
yes
yes
yes
no
yes
IsDF>
5%?
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
Is Mean DL <
Benchmark?
no
no
no
no
no
yes
no
no
no
no
no
no
no
no
no
Is Max Detect >
Benchmark?
yes
yes
yes
yes
yes
no
no
yes
yes
yes
yes
no
yes
no
yes
Qual
Typel
0
0
0
0
0
1
1
0
0
0
0
0
0
1
0
Qual
Type 2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Quant
COPC
1
1
1
1
1
0
0
1
1
1
1
0
1
0
1
Not a
COPC
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
a Essential nutrients are defined as: calcium, magnesium, potassium, and sodium (including dissolved state).
Total
11
Revised Sed COPC Screen: Wildlife Sed, 5/8/2002
-------
Appendix D
Wildlife Exposure Parameters
-------
This page intentionally left blank.
-------
EXPOSURE FACTORS FOR WILDLIFE RECEPTORS OF CONCERN
Mammalian
Semi-aquatic
Avian Aquatic
Receptor
Mink
Great Blue Heron
Genus species
Mustela vison
Ardea herodias
Body
Weight
(kg wet
weight)
0.556
2.34
Food
Ingestion
Rate
(kg wet
weight/day)
0.089
0.411
Water
Ingestion
Rate
(L/day)
0.058
0.10
Sediment
Ingestion
Rate
(kg dry
weight/day)
0.0002
0.0010
Home
Range
Size
(ha)
14.1
3.1
Wildlife Exposure Factors:
Factor Summary
5/7/2002
-------
Great Blue Heron
Ardea herodias
Parameter
Habitat
Body Weight
(kg wet weight)
Food Ingestion Rate
(kg wet weight/day)
Water Ingestion Rate
(L/day)
Sediment Ingestion
Rate
(kg dry weight/day)
Dietary Composition
(fraction wet volume)
Home Range Size
(ha)
Foraging Distance
(km)
Seasonal Use
Symbol
BW
IRfood
IRwater
IRsed
df
HR
Reported Values
Freshwater lakes, rivers, wetlands, brackish marshes and mangroves
where small fish are plentiful in shallow areas.
Forage in shallow shores of ponds, lakes, streams, wet meadows,
wooded swamps, bays and marshes. Uses trees for rookery sites. In
absence of trees will use rock ledges, cliffs and artificial structures.
2.229 - Mean - both sexes
2.204 - Mean - adult females
2.576 - Mean - adult males
Species specific values are not available.
Can be estimated based on following equation:
log IRfood = (0.966*(log BW) - 0.640) / 1000
Where: BW is in grams
Values not reported.
Estimated based on following equation:
IRwater =0.059*BW°67
Ingestion of sediment (Jed) as percentage of food intake (kg sediment
dry weight/kg food dry weight) is not available. Assumed to be equa
to 1%.
Diet is predominantly fish but may include crustaceans, insects, snail
amphibians, reptiles, birds and mammals.
Approximately 73% offish eaten were smaller than 1/3 of beak
length, 19% about Vz beak length, 7% longer than beak.
0.6 - Mean feeding territory - both sexes - fal
8.4 - Mean feeding territory - both sexes - winte
3.1- Mean - both sexes - South Dakota - summe
7 to 8 - Mean - both sexes - North Carolina - summe
Migratory in northern portion of range. Leave breeding grounds by
late October returning in mid-February.
References
USEPA, 1993
Sample & Suter,
1994
USEPA, 1993
Kushlan, 1978
USEPA, 1993
Assumption
i, USEPA, 1993;
Sample & Suter,
1994
USEPA, 1993
USEPA, 1993
USEPA, 1993
Values Identified for SER4
Mean of reported means:
2.34
Estimated from equation:
0.411
Estimated from equation:
0.10
IRsea = IRfood*0. 24 *Ised Where 0.24 (kg food
dry weight /kg food wet weight) = wet
weight to dry weight conversion factor for
food assuming 24% dry matter in food:
0.0010
Fraction fish = dfSsh= 1
Mean value for fall
0.6
Mean value for South Dakota:
3.1
Wildlife Exposure Factors:
Great Blue Heron
5/7/2002
-------
Mink
Mustela vison
Parameter
Habitat
Body Weight
(kg wet weight)
Food Ingestion Rate
(kg wet weight/day)
Water Ingestion Rate
(L/day)
Sediment or Soil
Ingestion Rate
(kg dry weight/day)
Dietary Composition
(fraction wet volume)
Home Range Size
(ha)
Seasonal Use
Symbol
BW
IRfood
•L^water
-'--^sediment
df
HR
Reported Values
Mink are associated with aquatic habitats including rivers, streams,
lakes, ditches, swamps, marshes and backwater areas. They prefer
irregular shorelines and brushy or wooded cover adjacent to the water.
1 .04 - Mean - adult male - summer - Montana
1.233- Mean - adult male - fall - Montana
0.550 - Mean - adult female- summer - Montana
0.586 - Mean - adult female - fall - Montana
0.777 - Mean - juvenile male - summer - Montana
0.533 - Mean - juvenile female - summer - Montana
0.13 g/g-day - Mean - captive males = 0.15 kg/day (using 1 . 14 kg BW)
0.12 g/g-day - Mean - farm raised males = 0.14 kg/day
0.16 g/g-day - Mean - farm raised females = 0.089 kg/day (0.556 BW)
0.028 g/g-day = 0.022 L/day - Mean for farm raised mink.
Ingestion of sediment (L,ed) or soil (Isoil) as percentage of food intake (kg
dry weight/kg food dry weight) is not available. Assumed to be equal to
1%.
Mink are opportunistic feeders taking whatever prey is abundant. In
many parts of its range mammals are the most important prey but mink
hunt aquatic prey as well depending on the season.
In mink stomachs the frequency of occurrence was: 11.5% fish, and
7.2% mammals.
Range size and shape depends on habitat. Shape is linear along streams
and circular in marshes.
Montana /riverine:
7.8 - Female mink in heavy vegetation
20.4 - Female mink in sparse vegetation
Mink are nocturnal and active year round.
References
USEPA, 1993
USEPA, 1993
USEPA, 1993
USEPA, 1993
USEPA, 1993
USEPA, 1993
USEPA, 1993
Values Identified for SERA
Mean of means for females:
0.556
Mean of means for females:
0.089
Reported mean selected:
0.058
IRsed (or IR^u) = IRfood*0.22*Ised/soll Where 0.22
(kg food dry weight /kg food wet weight) = wet
weight to dry weight conversion factor for food
assuming 22% dry matter in food:
0.00020
Fraction fish= dffish =1.0
Mean of reported values for females:
14.1
Wildlife Exposure Factors:
Mink
5/7/2002
-------
References for Wildlife Exposure Factors
Kushlan, J.A. 1978. Feeding ecology of wading birds. In: Sprunt, A., IV, J.C. Ogden,
and S. Winckler (eds.). Wading Birds. Research Report No. 7 of the National
Audubon Society. National Audubon Society, New York, NY. Pages 249-296.
Sample, B. E. and G. W. Suter. 1994. Estimating Exposure of Terrestrial Wildlife to
Contaminants. Environmental Sciences Division, Oak Ridge National
Laboratory, Oak Ridge, Tennessee. ES/ER/TM-125
USEPA. 1993. Wildlife Exposure Factors Handbook. Volume 1 and 2. Office of
Research and Development, U.S. Environmental Protection Agency, EPA/600/R-
93/187a and b. Washington, D.C.
-------
Appendix E
Derivation of Tissue-based TRVs for Fish
-------
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-------
Appendix E
Tissue Residues of Arsenic associated with Adverse Effects to Survival and Growth of Rainbow Trout
Arsenic
Note TRV indicated by bold and shading
Test
Species
Rainbow
Trout
Tissue
Type
Whole
Body
Exposure Form
Sodium arsenate
Sodium arsenate
Sodium arsenate
Sodium arsenate
Arsenic trioxide
Sodium arsenate
Sodium arsenate
Sodium arsenate
Sodium arsenate
Sodium arsenate
Sodium arsenate
Sodium arsenate
Exposure
Cone
(mg/L)
120
120
240
60
2.95
36
36
18
36
18
36
18
Exposure
Duration
(days)
7
7
7
7
21
77
77
77
77
77
77
77
Age,
Weight*
FG, 1.5g
FG, 1.5g
FG, 1.5g
FG, 1.5g
JV
FG, 5.7g
FG, 5.7g
FG, 5.7g
FG, 5.7g
FG, 5.7g
FG, 5.7g
FG, 5.7g
Residue
(mg/kg dw)
5
5
10
15
15
17
23.5
27
40.5
43
43
67.5
Effect
No Effect Survival
No Effect Growth
No Effect Survival
Reduced Survival by 50%
Reduced Growth
No Effect Survival
No Effect Survival/Growth
Reduced Survival/Death
Reduced Survival by 50%
Reduced Survival by 50%
Reduced Survival by 50%
Reduced Survival by 50%
Source
Citation
1
1
1
1
1
1
2
1
3
3
3
3
* FG = Fingerling; JV = Juvenile
1 - McGeachy and Dixon, 1990
2 - Dixon and Sprague, 1981
3 - McGeachy and Dixon, 1992
Source: Jarvinen andAnkley (1999). Linkages of Effects to Tissue Residues: Development of a
Comprehensive Database for Aquatic Organisms Exposed to Inorganic and Organic Chemicals.
Fish Tissue Burden TRVs: Arsenic
5/8/2002
-------
Cadmium
Appendix E
Tissue Residues of Cadmium associated with Adverse Effects to Survival and Growth of Rainbow Trout
Note TRV indicated by bold and shading
DRAFT
Test
Species
Brook
Trout
Brown
Trout
Rainbow
Trout
Tissue
Type
Kidney
Liver
Kidney
Liver
Kidney
Liver
Mucus
Muscle
Exposure Form
Cadmium chloride
Cadmium chloride
Cadmium chloride
Cadmium chloride
Cadmium chloride
Cadmium chloride
Cadmium chloride
Cadmium chloride
Cadmium sulfate
Cadmium sulfate
Cadmium sulfate
Cadmium sulfate
Cadmium chloride
Cadmium sulfate
Cadmium sulfate
Cadmium
Cadmium chloride
Cadmium sulfate
Cadmium
Cadmium chloride
Cadmium chloride
Cadmium sulfate
Cadmium sulfate
Cadmium
Cadmium sulfate
Cadmium chloride
Cadmium chloride
Cadmium sulfate
Cadmium
Cadmium sulfate
Cadmium sulfate
Cadmium chloride
Cadmium sulfate
Cadmium
Cadmium
Cadmium sulfate
Cadmium sulfate
Cadmium sulfate
Exposure
Cone
(mg/L)
0.0005
0.0005
0.0034
0.0034
0.0005
0.0034
0.0034
0.0034
0.027
0.0093
0.027
0.0093
0.01
0.01
0.00047
0.001
0.2
0.0018
0.0048
0.01
0.01
0.01
0.00047
0.001
2.3
0.002
0.2
0.0018
0.0048
0.0055
2.3
0.01
2.3
0.001
0.0048
0.00047
0.0018
0.0055
Exposure
Duration
(days)
266
266
266
266
266
266
735
735
90
630
90
630
180(90)
90
455
210
120
455
210
180(90)
180(90)
90
455
210
0.33 (2.67)
30
120
455
210
455
0.33 (2.67)
180(90)
0.33 (2.67)
210
210
455
455
455
Age,
Weight*
YR
YR
YR
YR
YR
YR
EMB
EMB
YR
AD
YR
AD
150-200g
YR
AD
3.1
JV
AD
3.1
150-200g
150-200g
YR
AD
3.1
138 g
AD
JV
AD
3.1
AD
138 g
150-200g
138 g
3.1
3.1
AD
AD
AD
Residue
(mg/kg dw)
2.5
4
4.7
8
16
50
65
9
5.3
277
5.7
91
1.9
7.5
8
25.5
36.5
82
100
331.5
1.9
5.2
5.5
8
15
15
18.75
29
36.5
56.5
4
0.1
0.4
0.45
0.6
2
3
14
Effect
No Effect Survival
No Effect Survival
Reduced Survival
Reduced Survival
No Effect Survival
Reduced Survival
No Effect Survival/Growth
No Effect Survival/Growth
No Effect Growth
No Effect Survival/Growth
No Effect Growth
No Effect Survival/Growth
No Effect Survival
No Effect Growth
No Effect Reproduction
No Effect Growth
No Effect Growth
Reduced Reproduction
Reduced Growth
No Effect Survival/Growth
No Effect Survival
No Effect Growth
No Effect Reproduction
No Effect Growth
No Effect Survival
No Effect Growth
No Effect Growth
Reduced Reproduction
Reduced Growth
No Effect Survival/Growth
No Effect Survival
No Effect Survival
No Effect Survival
No Effect Growth
Reduced Growth
No Effect Reproduction
Reduced Reproduction
No Effect Survival/Growth
Source
Citation
1
1
1
1
1
1
1
1
2
3
2
3
4
2
3
5
7
3
5
4
4
2
3
5
6
8
7
3
5
3
6
4
6
5
5
3
3
3
* YR = Yearling; EMB = Embryo; AD = Adult; JV = Juvenile
1 -Benoitetal., 1976
2 - Roberts et al., 1979
3-Brownetal., 1994
4-Calamarietal., 1982
5 - Kumada et al., 1973
6 - Handy, 1992
7-Olssonetal., 1989
8-Zelikoffetal., 1995
Source: Jarvinen andAnkley (1999). Linkages of Effects to Tissue Residues: Development of a
Comprehensive Database for Aquatic Organisms Exposed to Inorganic and Organic Chemicals.
Fish Tissue Burden TRVs: Cadmium
5/8/2002
-------
Appendix E
Tissue Residues of Copper associated with Adverse Effects to Survival and Growth of Rainbow Trout
Note TRVindicated by bold and shading
Test
Species
Brook
Trout
Rainbow
Trout
Tissue
Type
Egg
Kidney
Liver
Muscle
Liver
Muscle
Exposure Form
Copper sulfate
Copper sulfate
Copper sulfate
Copper sulfate
Copper sulfate
Copper
Copper sulfate
Copper
Copper sulfate
Copper sulfate
exposure
Cone
(mg/L)
0.0094
0.0094
0.0094
0.0094
0.6
NA
0.1
NA
0.6
0.1
exposure
Duration
(days)
720
720
720
720
0.33 (6.67)
360
0.33 (6.67)
360
0.33 (6.67)
0.33 (6.67)
Age, Weight*
EMB, JV, AD
EMB, JV, AD
EMB, JV, AD
EMB, JV, AD
138 g
2y
138 g
2y
138 g
138 g
Residue
(mg/kg dw)
7
16.5
239
17
360
500
865
1155
2.5
2.5
Effect
No Effect Survival/ Growth/Reproduction
No Effect Survival/ Growth/Reproduction
No Effect Survival/ Growth/Reproduction
No Effect Survival/ Growth/Reproduction
Reduced Survival by 63%
No Effect Survival
No Effect Survival
No Effect Survival
Reduced Survival by 63%
No Effect Survival
Source
Citation
1
1
1
1
2
2
3
3
2
2
EMB = Embryo; JV
1 - McKim and Benoit
2 - Handy, 1992
3 - Ollson et al., 1987
= Juvenile; AD = Adult
1971; 1974
Source: Jarvinen andAnkley (1999). Linkages of Effects to Tissue Residues: Development of a
Comprehensive Database for Aquatic Organisms Exposed to Inorganic and Organic Chemicals.
Fish Tissue Burden TRVs: Copper
5/8/2002
-------
Lead
Appendix E
Tissue Residues of Lead associated with Adverse Effects to Survival and Growth of Rainbow Trout
Note TRV indicated by bold and shading
Test
Species
Brook
Trout
Rainbow
Trout
Tissue
Type
Kidney
Liver
Kidney
Liver
Exposure
Form
Lead nitrate
Lead nitrate
Lead nitrate
Lead nitrate
Lead nitrate
Lead nitrate
Lead nitrate
Lead nitrate
Exposure
Cone
(mg/L)
0.119
0.235
0.47
0.119
0.235
0.47
0.06
0.06
Exposure
Duration
(days)
735
735
266
735
735
266
224
224
Age,
Weight*
EMB, AD
EMB, AD
YR, AD
EMB, AD
EMB, AD
YR,AD
UYR, 6.5g
UYR, 6.5g
Residue
(mg/kg
dw)
175
326
700
49
100
134
40
10
Effect
No Effect Survival/ Growth/Reproduction
Reduced Survival/ Growth/Reproduction
No Effect Survival/ Growth/Reproduction
No Effect Survival/ Growth/Reproduction
No Effect Survival/ Growth/Reproduction
Reduced Survival/ Growth/Reproduction
No Effect Survival
No Effect Survival
Source
Citation
1
1
1
1
1
1
2
2
EMB = Embryo; YR = Yearling; UYR = Under-yearling; AD = Adult
1 - Holcombe et al., 1976
2 - Hodson et al., 1978
Source: Jarvinen andAnkley (1999). Linkages of Effects to Tissue Residues:
Development of a Comprehensive Database for Aquatic Organisms Exposed to
Fish Tissue Burden TRVs: Lead
5/8/2002
-------
Appendix E
Tissue Residues of Zinc associated with Adverse Effects to Survival and Growth of Rainbow Trout
Zinc
Note TRV indicated by bold and shading
Test
Species
Brook
Trout
Rainbow
Trout
Tissue
Type
Kidney
Liver
Liver
Exposure
Form
Zinc sulfate
Zinc sulfate
Zinc sulfate
Zinc sulfate
Zinc sulfate
Zinc sulfate
Zinc sulfate
Zinc
Exposure
Cone
(mg/L)
1.36
1.36
0.534
0.534
1.36
1.36
0.15
NA
Exposure
Duration
(days)
140
140
168
168
140
140
60
360
Age,
Weight*
YR, AD
YR,AD
YR, AD
YR,AD
YR, AD
YR,AD
JV
2y
Residue
(ing/kg dw)
184.5
184.5
195
300
331.5
331.5
75
134
Effect
No Effect Survival/Growth
Reduced Reproduction
No Effect Survival/ Growth/Reproduction
No Effect Survival/ Growth/Reproduction
No Effect Survival/Growth
Reduced Reproduction
No Effect Survival
No Effect Survival
Source
Citation
1
1
1
1
1
1
2
3
* YR = Yearling; JV = Juvenile; AD = Adult
1 - Holcombe et al., 1979
2 - Hogstrand et al., 1994
3-Ollsonetal, 1987
Source: Jarvinen andAnkley (1999). Linkages of Effects to Tissue Residues:
Development of a Comprehensive Database for Aquatic Organisms Exposed to
Fish Tissue Burden TRVs: Zinc
5/8/2002
-------
Appendix F
Derivation of Oral TRVs for Wildlife
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-------
NOAEL & LOAEL TRVs - ALUMINUM
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Golubetal., 1987
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Sparling, 1990
Chemical
Aluminum
lactate
Aluminum
sulphate
Route
Oral
Diet
Oral
Diet
Study Test
Species
Rat
Mallard
Study Factors
Duration
Chronic
Chronic; 10
weeks
N
Doses
Endpoint
Reproduction,
Growth
Reproduction,
Growth
NOAEL study
cone (ppm)
85
200.0
LOAEL study
cone (ppm)
413
1,000
Conversion Factor
(kg food/ kg
BW/day)
Source
0.08
ORNL 1996
0.175
Camardeseetal.,
1990
NOAEL dose
(mg/kg-day)
6.8
35.00
LOAEL dose
(mg/kg-day) 1
33.04
175.0
Uncertainty Factors (UF)
Inter-
species
3
1
Duration
1
1
End
NOAEL
1
1
point
LOAEL
1
1
Other
1
1
Total UF5
NOAEL
3
1
LOAEL
3
1
NOAEL TRY
(mg/kg-day)
1.13
2.27
17.50
35.00
LOAEL TRY
(mg/kg-day)
5.5
11.01
87.5
175.0
If no study is available to establish a LOAEL TRY, the LOAEL is set to equal 3 x NOAEL
3 TRV(food) = TRV(water) / 0.50
Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar; and laboratory rodents are often more sensitive than wild species due to genetic heterogeneity of natural populations.
4 TRV(water or capsule) = TRV(food) * 0.50
5 TRY = Study Dose/UF
SMF = Study Modifying Factor
NA=Not Available
UF = Uncertainty Factor
NOAEL =No observed adverse effect level
LOAEL = Lowest observed adverse effect level
BW = body weight
TRY = Toxicity Reference Value
Wildlife TRVs: Alum
-------
NOAEL & LOAEL TRVs - ARSENIC
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
Schroeder&Mitchener, 1971
Byron etal., 1967
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Stanley etal., 1994
Chemical
Arsenite salt
Sodium arsenite
Sodium arsenate
Route
Oral
Water
Oral
Diet
Oral
Diet
Study Test
Species
Charles
River CD
Mice3
Beagle
Mallard
Study Factors
Duration
Chronic; 3
generations
2 years
Chronic; 8
weeks
N
10 animals in
each generation
6 animals per
dose group
12 pairs (24
ducks) per diet
Doses
1 dose of 5.06ppm
(5 ppm water + 0.06
ppm diet)
4 doses each of
arsenate or arsenite
5, 25, 50, 125 ppm
4 doses of 0, 25, 100,
400 ppm
(MeanatlOO&400
= 93 & 403 ppm)
Endpoint
Reproduction,
Growth,
Longevity
Growth,
Mortality
Reproduction,
Growth
NOAEL study
cone (ppm)
5.06
50
93
LOAEL study
cone (ppm)
403
Conversion Factor
(kg food/ kg
BW/day)
Source
0.25
ORNL 1996
0.024
ORNL 1996
0.175
Camardese etal.,
1990
NOAEL dose
(mg/kg-day)
1.27
1.2
16
LOAEL dose
(mg/kg-day) 1
NA
NA
71
Uncertainty Factors (UF)
Inter-
species
5
4
5
Duration
1
1
1
End
NOAEL
1
1
2
point
LOAEL
1
1
1
Other
1
2
Unknown
Effect
Level
2
SMF
Total UF5
NOAEL
5
8
20
LOAEL
5
8
10
NOAEL TRY
(mg/kg-day)
2.5E-01
1.5E-01
4.1E-01
8.1E-01
LOAEL TRY
(mg/kg-day)
7.6E-01
4.5E-01
3.5E+00
7.1E+00
If no study is available to establish a LOAEL TRY, the LOAEL is set to equal 3 xNOAEL
2 TRV(food) = TRV(water) / 0.50
3 Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar; and laboratory rodents are ofter
4 TRV(water or capsule) = TRV(food) * 0.50
5 TRY = Study Dose / UF
sitive than wild species due to genetic heterogeneity of natural populatio
SMF = Study Modifying Factor
NA= Not Available
UF = Uncertainty Factor
NOAEL =No observed adverse effect level
LOAEL = Lowest observed adverse effect level
BW = body weight
TRY = Toxicity Reference Value
Wildlife TRVs: Arse
-------
NOAEL & LOAEL TRVs - CADMIUM
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
Schroeder&Mitchener, 1971
Wilson etal., 1941
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
White &Finley, 1978
Chemical
Soluble
cadmium salts
Cadmium
chloride
Cadmium
chloride
Route
Oral
Water
Oral
Diet
Oral
Diet
Study Test
Species
Charles
River CD
Mice
Albino rats
Mallard
Study Factors
Duration
Chronic; 3
generations
Chronic;
100 days
Chronic; 90
days
N
10 animals per
dose group
4 to 6 animals
per dose group
20 animals per
dose group
Doses
1 expsoure of 10
mg/L
(0. 1 ppm in diet)
6 exposures
(0 control, 31,62,
125, 250, 500 ppm)
4 exposure groups
(0 control, 20, 200,
2000 ppm wet
weight)
Endpoint
Reproduction
Growth
Reproduction
NOAEL study
cone (ppm)
31
17.3
LOAEL study
cone (ppm)
10
62
239
Conversion Factor
(kg food/ kg
BW/day)
Source
0.25
ORNL 1996
0.08
ORNL 1996
0.1
Measured in study
NOAEL dose
(mg/kg-day)
NA
2.48
1.73
LOAEL dose
(mg/kg-day) 1
2.5
4.96
23.9
Uncertainty Factors (UF)
Inter-
species
5
5
5
Duration
1
1
1
End
NOAEL
1
1
2
point
LOAEL
1
1
1
Other
1
1
2
SMF
Total UF5
NOAEL
5
5
20
LOAEL
5
5
10
NOAEL TRY
(mg/kg-day)
0.17
0.50
0.04
0.09
LOAEL TRY
(mg/kg-day)
0.50
0.99
1.2
2.4
If no study is available to establish a LOAEL TRY, the LOAEL is set to equal 3 x NOAEL
3 TRV(food) = TRV(water) / 0.50
Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar; and laboratory rodents are often more sensitive than wild species due to genetic heterogeneity of natural populations.
4 TRV(water or capsule) = TRV(food) * 0.50
5 TRY = Study Dose/UF
SMF = Study Modifying Factor
NA=Not Available
UF = Uncertainty Factor
NOAEL =No observed adverse effect level
LOAEL = Lowest observed adverse effect level
BW = body weight
TRY = Toxicity Reference Value
Wildlife TRVs: Cadmium
-------
NOAEL&LOAELTRVs - CHROMIUM
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
No Reliable TRY Establishing
Study
Derive from dietary TRY
Ivankovic and Preussmann
1975
No Reliable TRY Establishing
Study
Derive from dietary TRY
Haseltine et al. 1985
Chemical
Chromium oxide
Cr*3
Chromium
potassium sulfate
Cr+3
Route
Oral
Diet
Oral
Diet
Study Test
Species
Rat
Black duck
Study Factors
Duration
90 days & 2
years
Chronic
10 months
Critical
lifestage
N
Doses
3 exposures
1%, 2%, 5%
2 exposures
10 & 50 ppm
Endpoint
Reproduction;
Longevity
Reproduction
NOAEL study
cone (ppm)
50000
10
LOAEL study
cone (ppm)
50
Conversion Factor
(kg food/ kg
BW/day)
Source
0.08
BW&FCNS-EPA
1988a
0.1
BW - Dunning
1984; FCNS -Heinz
et all 989
NOAEL dose
(mg/kg-day)
4000
1.0
LOAEL dose
(mg/kg-day) 1
NA
5.0
Uncertainty Factors (UF)
Inter-
species
5
5
Duration
1
1
End
NOAEL
1
1
point
LOAEL
1
1
Other
1
1
Total UF5
NOAEL
5
5
LOAEL
5
5
NOAEL TRY
(mg/kg-day)
4.0E+02
8.0E+02
l.OE-01
2.0E-01
LOAEL TRY
(mg/kg-day)
1.2E+03
2.4E+03
5.0E-01
l.OE+00
If no study is available to establish a LOAEL TRY, the LOAEL is set to equal 3 x NOAEL
2 TRV(food) = TRV(water) / 0.50
3 Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar, and laboratory rodents are often more sensitive than wild species due to genetic heterogeneity of natural populations.
4 TRV(water or capsule) =TRV(food) * 0.50
5 TRY = Study Dose/UF
SMF = Study Modifying Factor
NA=NotAvailable
UF = Uncertainty Factor
NOAEL = No observed adverse effect level
LOAEL = Lowest observed adverse effect level
BW= body weight
TRY = Toxicity Reference Value
Wildlife TRVs: Chrc
-------
NOAEL&LOAELTRVs - COPPER
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
Aulerichetal., 1982
No Reliable TRY Establishing
Studies Found
Derive from Water TRV2
No Reliable TRY Establishing
Studies Found
Derive from Dietary TRY1
Jackson & Stevenson, 1981
Chemical
Copper sulfate
Copper oxide
Route
Oral
Water
Oral
Diet
Study Test
Species
Mink
Chicken
Study Factors
Duration
Chronic; 357
days
Chronic; 40
weeks
N
24animalsper
dose group
22 animals per
dose group
Doses
5 exposures
(60.5 control, 25, 50,
100, 200mg/kg)
6 exposures
(0 control, 150, 300,
450, 600, 750 ppm)
Enclpoint
Reproduction
(Reproductive
success)
Reproduction
NOAEL study
cone (ppm)
110.5
300
LOAEL study
cone (ppm)
160.5
450
Conversion Factor
(kg food/ kg
BW/day)
Source
0.16
USEPA, 1993
0.067
Measured in study
NOAEL dose
(mg/kg-day)
17.7
20.1
LOAEL dose
(mg/kg-day) '
25.7
30.2
Uncertainty Factors (UF)
Inter-
species
1
5
Duration
1
1
End
NOAEL
1
1
point
LOAEL
1
1
Other
1
1
Total UF5
NOAEL
1
5
LOAEL
1
5
NOAEL TRY
(mg/kg-day)
1.8E+01
8.8E+00
2.0E+00
4.0E+00
LOAEL TRV
(mg/kg-day)
2.6E+01
1.3E+01
3.0E+00
6.0E+00
If no study is available to establish a LOAEL TRV, the LOAEL is set to equal 3 x NOAEL
2 TRV(food) = TRV(water) / 0.50
3 Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar, and laboratory rodents are often more sensitive than wild species due to genetic heterogeneity of natural populations.
4 TRV(water or capsule) =TRV(food) * 0.50
5 TRV = Study Dose/UF
SMF = Study Modifying Factor
NA=NotAvailable
UF = Uncertainty Factor
NOAEL = No observed adverse effect level
LOAEL = Lowest observed adverse effect level
BW= body weight
TRV = Toxicity Reference Value
Wildlife TRVs: Copper
-------
NOAEL & LOAEL TRVs - LEAD
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Horwitt & Cowgill, 1938
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Edens & Garlich, 1983
Chemical
Lead acetate
Lead acetate
Route
Oral
Diet
Oral
Diet
Study Test
Species
Dogs
Leghorn
hens
Study Factors
Duration
Chronic;
prenatal + 7
months
Chronic; 10
weeks
(during
repro-
duction)
N
2 to 4 animals
per dose group
20 or 40
animals per
dose group
Doses
4 exposures
(2 control, 25, 50,
lOOppm)
3 or 5 exposures
Exp 1- 0, 25, 50ppm;
Exp 2 - 0, 50, 100,
200, 400 ppm
Endpoint
Reproduction,
Growth
Reproduction
(Egg
production)
NOAEL study
cone (ppm)
52
25
LOAEL study
cone (ppm)
102
50
Conversion Factor
(kg food/ kg
BW/day)
Source
0.024
ORNL, 1996
0.175
Sax & Lewis, 1989
NOAEL dose
(mg/kg-day)
1.25
4.38
LOAEL dose
(mg/kg-day) 1
2.45
8.75
Uncertainty Factors (UF)
Inter-
species
4
5
Duration
1
1
End
NOAEL
1
1
point
LOAEL
1
1
Other
1
1
Total UF5
NOAEL
4
5
LOAEL
4
5
NOAEL TRY
(mg/kg-day)
1.6E-01
3.1E-01
4.4E-01
8.8E-01
LOAEL TRY
(mg/kg-day)
3.1E-01
6.1E-01
8.8E-01
1.8E+00
If no study is available to establish a LOAEL TRY, the LOAEL is set to equal 3 xNOAEL
2 TRV(food) = TRY (water) / 0.50
3 Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar; and laboratory rodents are often more sensitive than wild species due to genetic heterogeneity of natural populations.
4 TRV(water or capsule) = TRV(food) * 0.50
5 TRY = Study Dose/UF
SMF = Study Modifying Factor
NA= Not Available
UF = Uncertainty Factor
NOAEL =No observed adverse effect level
LOAEL = Lowest observed adverse effect level
BW = body weight
TRY = Toxicity Reference Value
Wildlife TRVs: Lead
-------
NOAEL & LOAEL TRVs - MANGANESE
Receptor
Mink (water)
Mink (diet)
Great Blue Heron
(water)
Great Blue Heron
(diet)
Study
No Reliable TRY Establishing
Study
Derive from dietaiy TRY
Laskey etal 1982
No Reliable TRY Establishing
Study
Derive from dietary TRY
Laskey and Edens 1985
Chemical
Manganese
oxide
Manganese
oxide
Route
Oral
Diet
Oral
Diet
Study Test
Species
Rat
Japanese
quail
Study Factors
Duration
224 days
(through
gestation)
Critical
lifestage
75 days
Chronic
exposure
N
Doses
3 exposures
350, 1050, 3500 ppm(+
50 ppm basal diet)
1 exposure
5000 ppm (+56 ppm
basal diet)
Endpoint
Reproduction
Growth;
Aggressive
behavior
NOAEL study
cone (ppm)
1100
LOAEL study
cone (ppm)
3550
Conversion Factor
(kg food/ kg
BW/day)
Source
0.08
BW & FCNS - EPA
1988a
1
None required
NOAEL dose
(mg/kg-day)
88
NA
LOAEL dose
(mg^g-day) '
284
977
Reported in
study
Uncertainty Factors (UF)
Inter-
species
5
5
Duration
1
1
End
NOAEL
1
1
point
LOAEL
1
1
Other
1
1
Total UFS
NOAEL
5
5
LOAEL
5
5
NOAEL TRY
(mg/kg-day)
8.8E+00
1.8E+01
3.3E+01
6.5E+01
LOAEL TRY
(mg/kg-day)
2.8E+01
5.7E+01
9.8E+01
2.0E+02
1 If no study is available to establish aLOAEL TRY, the LOAEL is s<
2 TRVffood) = TRV(water) / 0.50
3 Test species uncertainty factor equals 1 since both Old World andNi
4 TRY (water or capsule) = TRY (food)* 0.50
5 TRY = Study Dose/UF
SMF = Study Modifying Factor
NA = Not Available
UF = Uncertainty Factor
NOAEL = No observed adverse effect level
LOAEL = Lowest observed adverse effect level
BW = body weight
TRY = Toxicity Reference Value
et to equal 3 x NOAEL
ew World mice are physiologically si
and laboratory rodents are often
nsitive than wild species due to genetic heterogeneity of natural populations.
Wildlife TRVs: Manganese
-------
NOAEL & LOAEL TRVs - INORGANIC MERCURY
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Aulerichetal., 1974
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Hill & Schaffner, 1976
Chemical
Mercuric
chloride
Mercuric
chloride
Route
Oral
Diet
Oral
Diet
Species
Mink
Japanese
quail
Study Factors
Duration
Sub chronic;
6 month
Critical life
stage (kit
develop.)
Chronic; 1
year
Critical life
stage
(hatchling)
N
15 animals per
dose group
Doses
1 exposure
(lOppm)
5 exposures
(2,4,8, 16, 32ppm)
Endpoint
Reproduction,
Developmental
Reproduction,
Developmental
cone (ppm)
10
4
cone (ppm)
8
Conversion Factor
(kg food/ kg
BW/day)
Source
0.137
Bleavins &
Aulerich, 1981
0.113
ORNL, 1996
(mg/kg-day)
1.4
0.45
(mg/kg-day) 1
NA
0.90
Uncertainty Factors (UF)
species
1
5
Duration
1
1
End
NOAEL
1
1
point
LOAEL
1
1
Other
1
1
Total UF5
NOAEL
1
5
LOAEL
1
5
(mg/kg-day)
0.69
1.4
0.05
0.09
(mg/kg-day)
2.1
4.1
0.1
0.18
If no study is available to establish a LOAEL TRY, the LOAEL is set to equal 3 x NOAEL
2 TRV(food) = TRV(water) / 0.50
3 Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar; and laboratory rodents are often more sensitive than wild species due to genetic heterogeneity of natural populations.
4 TRV(water or capsule) = TRV(food) * 0.50
5 TRY = Study Dose/UF
SMF = Study Modifying Factor
NA=Not Available
Wildlife TRVs: Mercury
-------
NOAEL & LOAEL TRVs - MOLYBDENUM
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
Schroeder & Mitchener,
1971
No Reliable TRY
Establishing Studies Found
Derive from Water TRY2
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Lepore& Miller, 1965
Chemical
Molybdate
(Mo04)
Sodium
Molybdate
Route
Oral
Water
Oral
Diet
Study Test
Species
Mouse
Chicken
Study Factors
Duration
Chronic; 3
generations
21 days thru
reproduction
Critical life
stage
N
10 animals per
dose group
Doses
1 expsoureof 10
mg/L
(0.45 ppm in diet)
3 exposures
(500, 1000, 2000 ppm
in diet)
Endpoint
Reproduction
Reproduction
NOAEL study
cone (ppm)
0.45
LOAEL study
cone (ppm)
10.45
500
Conversion Factor
(kg food/ kg
BW/day)
Source
0.25
BW & WCNS -
EPA 1988a
0.071
BW&FCNS-
EPA 1988a
NOAEL dose
(mg/kg-day)
0.1125
NA
LOAEL dose
(mg/kg-day) 1
2.6
35.33
Uncertainty Factors (UF)
Inter-
species
5
5
Duration
1
1
End
NOAEL
1
1
point
LOAEL
1
1
Other
1
1
Total UF5
NOAEL
5
5
LOAEL
5
5
NOAEL TRY
(mg/kg-day)
0.02
0.01
1.18
2.36
LOAEL TRY
(mg/kg-day)
0.52
0.26
3.53
7.07
If no study is available to establish a LOAEL TRY, the LOAEL is set to equal 3 xNOAEL
2 TRV(food) = TRV(water) / 0.50
3 Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar; and laboratory rodents are often more sensitive than wild species due to genetic heterogeneity of natural populations.
4 TRV(water or capsule) = TRV(food) * 0.50
5 TRY = Study Dose / UF
SMF = Study Modifying Factor
NA= Not Available
Wildlife TRVs: Molybder
-------
NOAEL&LOAELTRVs - SELENIUM
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
Rosenfeld&Beathl954
No Reliable TRY Establishing
Study
Derive from water TRV
No Reliable TRV Establishing
Study
Derive from dietary TRV
Heinz etal 1987
Chemical
Potassium
selenate
Sodium selenite
Route
Oral
Water
Oral
Diet
Study Test
Species
Rat
Mallard
Study Factors
Duration
1 year (2
generations)
Critical lifestage
78 days
Critical lifestage
N
Doses
3 exposures
1.5, 2.5, 7.5 mg/L
5 exposures
1,5, 10,25, 100 ppm
Endpoint
Reproduction
Reproduction
NOAEL study
cone (ppm)
1.5
5
LOAEL study
cone (ppm)
2.5
10
Conversion Factor
(kg food/ kg
BW/day)
Source
0.13
BW&WCNS-
EPA 1988a
0.10
Measured in study
NOAEL dose
(mg/kg-day)
0.20
0.5
LOAEL dose
(mg/kg-day) 1
0.33
1.0
Uncertainty Factors (UF)
Inter-
species
5
5
Duration
1
1
End
NOAEL
1
1
point
LOAEL
1
1
Other
1
1
Total UF5
NOAEL
5
5
LOAEL
5
5
NOAEL TRV
(mg/kg-day)
3.9E-02
7.9E-02
5.0E-02
l.OE-01
LOAEL TRV
(mg/kg-day)
6.6E-02
1.3E-01
l.OE-01
2.0E-01
If no study is available to establish a LOAEL TRV, the LOAEL is set to equal 3 x NOAEL
2 TRV(food) = TRV(water) / 0.50
3 Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar, and laboratory rodents are often more sensitive than wild species due to genetic heterogeneity of natural populations.
4 TRV(water or capsule) =TRV(food) * 0.50
5 TRV = Study Dose / UF
SMF = Study Modifying Factor
NA=NotAvailable
UF = Uncertainty Factor
NOAEL = No observed adverse effect level
LOAEL = Lowest observed adverse effect level
BW= body weight
TRV = Toxicity Reference Value
Wildlife TRVs: Seler
-------
NOAEL & LOAEL TRVs - ZINC
Receptor
Mink (water)
Mink (diet)
Great Blue
Heron (water)
Great Blue
Heron (diet)
Study
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Aulerichetal., 1991
No Reliable TRY
Establishing Studies Found
Derive from Dietary TRY4
Stahletal., 1989
Chemical
Zinc sulfate
Zinc sulfate
Route
Oral
Diet
Oral
Diet
Species
Mink
White
leghorn hen
Study Factors
Duration
Chronic
Chronic; 44
weeks
Critical life
stage
N
12 animals per
dose group
Doses
4 exposures
(0, 500, 1000, 1500
ppm)
3 exposures
(28 control, 20, 200,
2000 ppm)
Endpoint
Survivability,
Growth
Reproduction
cone (ppm)
2,028
cone (ppm)
Conversion Factor
(kg food/ kg
BW/day)
Source
1
None required
0.0646
Measured in study
(NOAEL group)
(mg/kg-day)
311
ave. of male &
female kits
131
(mg/kg-day) 1
NA
NA
Uncertainty Factors (UF)
species
1
5
Duration
1
1
End
NOAEL
1
1
point
LOAEL
1
1
Other
1
1
Total UF5
NOAEL
1
5
LOAEL
1
5
(mg/kg-day)
155.5
311
13
26
(mg/kg-day)
466.5
933
39
79
If no study is available to establish a LOAEL TRY, the LOAEL is set to equal 3 x NOAEL
2 TRV(food) = TRV(water) / 0.50
3 Test species uncertainty factor equals 1 since both Old World and New World mice are physiologically similar; and laboratory i
4 TRV(water or capsule) = TRV(food) * 0.50
5 TRY = Study Dose / UF
isitive than wild species due to genetic heterogeneity of natural populatio
SMF = Study Modifying Factor
NA=Not Available
Wildlife TRVs: Zini
-------
References for Wildlife Toxicity Reference Values (TRVs)
Aulerich, R.J., R.K. Ringer, and J. Iwamoto. 1974. Effects of Dietary Mercury on Mink.
Arch. Environ. Contam. Toxicol. 2:43-51.
Aulerich, R.L., R.K. Ringer, M.R. Bleavins, and A. Napolitano. 1982. Effects of
supplemental dietary copper on growth, reproductive performance, and kit
survival of standard dark mink and the acute toxicity of copper and mink.
Journal of Animal Science. 55(2):337-343.
Aulerich, R.J., S.J. Bursian, R.H. Poppenga, W.E. Braselton, and T.P. Mullaney. 1991.
Toleration of high concentrations of dietary zinc by mink. Journal of Veterinary
Diagnostic Investigations 3:232-237.
Bleavins, M.R. and RJ. Aulerich. 1981. Feed consumption and food passage time in
mink (Mustela vison) and European ferrets (Mustela putorius furo). Lab. Anim.
Sci. 31:268-269.
Byron, W.R., G.W. Bierbower, J.B. Brouwer, and W.H. Hansen. 1967. Pathologic
changes in rats and dogs from two-year feeding of sodium arsenite or sodium
arsenate. Toxicology and AppliedPharmacology 10: 132-147.
Camardese, M.B., DJ. Hoffman, LJ.LeCaptain, and G.W. Pendleton. 1990. Effect of
arsenate on growth and physiology in mallard ducklings. Environmental
Toxicology and Chemistry 9:785-795.
Domingo, J.L., J.L. Paternain, J.M. Llobet, and J. Corbella. 1986. Effects of vanadium
on reproduction, gestation, parturition and lactation rats upon oral administration.
Life Sci. 39:819-824.
Dunning, J.B. Jr. 1993. CRC Handbook of Avian Body Masses. CRC Press, FL.
Edens, F.W. and J.D. Garlich. 1983. Lead-induced egg production decrease in Leghorn
and Japanese Quail hens. Poultry Science 62:1757-1763.
Golub, M.S., M.E. Gershwin, J.M. Donald, S. Negri, and C.L. Keen. 1987. Maternal
and Developmental Toxicity of Chronic Aluminum Exposure in Mice.
Fundamental and Applied Toxicology. 8: 346-357.
Haseltine, S.D.,.L. Sileo, D.J. Hoffman, andB.D. Mulhern. 1985. Effects of chromium
on reproduction and growth on black ducks.
Heinz, G.H., D.J. Hoffman, A.J. Krynitsky, and D.M.G. Weller. 1987. Reproduction in
mallards fed selenium. Environ. Toxicol. Chem. 6:423-433.
-------
Heinz, G.H., DJ. Hoffman, and L.G. Gold. 1989. Impaired reproduction of mallards fed
an organic form of selenium. J. Wildl. Mgmt. 53:418-428.
Hill, E.F. and C.S. Shaffner. 1976. Sexual maturation and productivity of Japanese quail
fed graded concentrations of mercuric chloride. Poultry Science. 55: 1449-1459.
Horwitt, M.K. and G.R. Cowgill. 1938. The effects of ingested lead on the organism .
Studies on the rat. Journal of Pharmacology and Experimental Therapy
66:300-310.
Ivankovic, S. and R. Preussmann. 1975. Absence of toxic and carcinogenic effects after
administration of high doses of chromic oxide pigment in subacute and long-term
feeding experiments in rats. Fd. Cosmet. Toxicol. 13:347-351.
Jackson, N. andM.H. Stevenson. 1981. Identification if the component responsible for
the effects of added dietary copper sulfate in the female domestic fowl. Journal
of the Science of Food and Agriculture 32:1047-1056.
Johnson, D., Jr., A.L. Mehring, Jr., and H.W. Titus. 1960. Tolerance of chickens for
barium. Proc. Soc. Exp. Biol. Med. 104:436-438.
Lepore, P.D. and R.F. Miller. 1965. Embryonic viability as influenced by excess
molybdenum in chicken breeder diets. Proc. Soc. Exp. Biol. Med. 118:155-157.
Laskey, J. W., G.L. Rehnberg, J. F. Hein, and S.d. Carter. 1982. Effects of chronic
manganese (MnsO^ exposure on selected reproductive parameters in rats. J.
Toxicol. Environ. Health. 9:677-687.
Laskey, J.W., and F.W. Edens. 1985. Effects of chronic high-level manganese exposure
on male behavior in the Japanese Quail (Cotirnix coturnix japonica). Poultry Sci.
64:579-584.
ORNL, 1996. Opresko, D.M., B.E. Sample, and G.W. Suter II. Toxicological
Benchmarks for Wildlife: 1996 Revision. Oak Ridge National Laboratory, Oak
Ridge, TN. Es/ER/TM-86/R3.
Perry, H.M., E.F. Perry, M.N. Eranger, and S.J. Kopp. 1983. Cardiovascular effects of
chronic barium ingestion. In: Proc. 17th Ann. Conf. Trace Substances in Enviro
Health, vol. 17. U. of Missouri Press, Columbia, MO.
Rosenfeld, I. And O.A. Beath. 1954. Effect of selenium on reproduction in rats. Proc.
Soc. Exp. Biol. Med. 87:295-297.
7th
Sax, I. and R. Lewis. 1989. Dangerous Properties of Industrial Materials. 1 ed., Vol.
Ill, Van Nostrand Reinhold, NY.
-------
Schroeder, H.A. and M. Mitchener. 1971. Toxic effects of trace elements on the
reproduction of mice and rats. Archives of Environmental Health 23:102-106.
Sparling, D.W. 1990. Acid Precipitation and Food Quality: Inhibition of Growth and
Survival in Black Ducks and Mallards by Dietary Aluminum, Calcium and
Phosphorus. Archives of Environmental Contamination and Toxicology. 19: 457-
463.
Stahl, J.L., M.E. Cook, M.L. Sunde, and J.L. Greger. 1989. Enhanced humoral
immunity in progeny chicks fed practical diets supplemented with zinc. Applied
Agricultural Research 4:86-89.
Stanley, T.R., Jr., J.W. Spann, GJ. Smith, and R. Rosscoe. 1994. Main and interactive
effects of arsenic and selenium on mallard reproduction and duckling growth and
survival. Archives of Environmental Contamination and Toxicology 26:444-451.
United States Environmental Protection Agency (USEP A). 1988. Recommendations for
and documentation of biological values for use in risk assessment. Environmental
Criteria and Assessment Office, Cincinnati, OH. EPA/600/6-87/008.
United States Environmental Protection Agency (USEPA). 1993a. Wildlife Exposure
Factors Handbook. Volume I. U.S. Environmental Protection Agency, Office of
Research and Development. EPA/600/R-93/187a. December 1993.
United States Environmental Protection Agency (USEPA). 1993b. Wildlife Exposure
Factors Handbook. Volume II. U.S. Environmental Protection Agency, Office of
Research and Development. EPA/600/R-93/187a. December 1993.
White, D.H. and M.T. Finley. 1978. Uptake and retention of dietary cadmium in mallard
ducks. Environmental Research 17:53-59.
Wilson, R.H., F. Deeds, and AJ. Cox, Jr. 1941. Effects of continued cadmium feeding.
Journal of Pharmacology and Experimental Therapy 71:222-23 5.
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Appendix G
Detailed Calculations of HQ Values
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This page intentionally left blank.
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Appendix G
Risk Calculations to Fish Based on Tissue Burdens
WB = sum(Ki * Ci) / sum(Ki)
Hazard Quotients
Parameter
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Station ID
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Species
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Sample ID
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-1-1
BR-1-2
BR-1-3
BR-1-4
BR-1-5
BR-1-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-1-1
BR-1-2
BR-1-3
BR-1-4
BR-1-5
BR-1-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-1-1
BR-1-2
Fillet
(mg/kg dw)
l.OE-02
1.2E-02
1.2E-02
7.9E-03
9.8E-03
l.OE-02
9.2E-03
1.1E-02
1.1E-02
1.1E-02
5.6E-02
9.7E-02
6.5E-01
1.4E+00
5.6E-01
4.6E-01
1.1E+00
3.4E-01
2.3E-02
1.2E-02
l.OE-02
2.0E-02
4.3E-02
1.8E-02
3.2E-02
3.9E-02
4.3E-02
2.4E-02
1.6E-02
2.8E-02
7.3E-03
4.5E-03
4.7E-03
4.9E-03
4.3E-03
3.6E-03
3.1E-01
3.4E-01
3.1E-01
6.7E-01
4.2E-01
3.9E-01
7.0E-01
3.1E-01
5.1E-01
4.5E-01
2.5E-01
3.6E-01
2.7E-01
2.7E-01
Gonad
(mg/kg dw)
8.6E-03
8.9E-03
1.5E-02
9.8E-03
1.4E-01
2.1E-01
1.2E-02
3.2E-02
1.1E-02
3.2E-02
6.9E-02
1.1E-02
3.1E-02
2.1E-01
l.OE-02
8.9E-03
1.4E-01
9.3E-03
1.6E-01
9.0E-02
3.4E-01
6.7E-02
2.1E-01
2.8E-01
1.8E+00
2.3E+00
1.9E-01
2.7E-01
4.1E-01
2.4E-01
1.3E-01
1.1E+00
2.9E-02
1.9E-02
3.7E-01
2.9E-02
4.1E-01
8.8E+00
1.1E+00
7.4E+00
1.2E+01
2.6E+00
l.OE+00
1.2E+00
4.8E+00
4.3E+00
2.2E+00
5.3E+00
l.OE+00
2.7E+00
Kidney
(mg/kg dw)
1.1E-02
7.2E-02
6.2E-02
1.5E-02
2.1E-01
4.2E-01
1.1E-02
1.8E-02
2.8E-02
5.9E-02
1.2E-02
1.6E-02
1.3E-02
2.2E-02
2.6E-02
1.9E-02
1.6E-02
3.2E-02
1.1E+01
5.1E+01
2.1E+01
4.1E+00
2.4E+01
1.6E+02
3.0E+01
5.8E+01
6.4E+01
4.1E+01
1.4E+01
1.9E+01
1.9E+00
l.OE+01
3.5E+00
1.7E+00
3.8E+00
2.8E+00
2.0E+00
3.2E+01
1.9E+01
4.2E+01
8.2E+00
1.1E+02
8.3E+00
l.OE+01
1.3E+01
1.3E+01
9.5E+00
7.5E+00
1.5E+00
3.4E+00
Liver
(mg/kg dw)
2.3E-02
1.8E-02
3.5E-02
3.1E-02
7.9E-02
8.9E-02
1.2E-02
2.4E-02
1.2E-02
3.2E-02
1.1E-02
1.3E-02
l.OE-02
l.OE-02
1.1E-02
1.1E-02
1.8E-02
3.2E-02
5.8E+00
2.0E+00
2.4E+00
2.3E+01
4.6E+00
3.2E+00
8.5E+00
9.3E+00
6.7E+00
4.3E+00
2.4E+00
3.5E+00
1.4E+00
1.9E+00
1.2E+00
7.8E-01
1.9E+00
1.7E+00
4.4E+01
2.2E+01
8.5E+01
6.5E+00
4.2E+01
l.OE+02
6.8E+01
3.3E+02
8.8E+01
7.5E+01
2.7E+02
2.1E+01
2.8E+02
3.0E+02
Estimated Whole Body
(mg/kg dw)
1.1E-02
1.2E-02
1.3E-02
8.3E-03
1.5E-02
2.0E-02
9.3E-03
1.1E-02
1.1E-02
1.2E-02
5.5E-02
9.3E-02
6.2E-01
1.3E+00
5.3E-01
4.4E-01
1.1E+00
3.3E-01
2.3E-01
6.2E-01
2.9E-01
3.9E-01
3.8E-01
1.9E+00
5.3E-01
8.8E-01
8.7E-01
5.6E-01
2.1E-01
3.0E-01
5.1E-02
1.6E-01
6.2E-02
3.6E-02
8.1E-02
6.1E-02
9.6E-01
1.2E+00
1.7E+00
1.4E+00
1.3E+00
3.2E+00
1.7E+00
5.1E+00
2.0E+00
1.7E+00
4.3E+00
8.3E-01
4.3E+00
4.6E+00
Fillet
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
5.0E-02
2.6E-02
2.2E-02
4.5E-02
9.4E-02
4.0E-02
7.1E-02
8.7E-02
9.6E-02
5.3E-02
3.6E-02
6.2E-02
1.6E-02
9.9E-03
l.OE-02
1.1E-02
9.4E-03
8.0E-03
1.2E-01
1.4E-01
1.2E-01
2.7E-01
1.7E-01
1.6E-01
2.8E-01
1.3E-01
2.0E-01
1.8E-01
l.OE-01
1.5E-01
1.1E-01
1.1E-01
Gonad
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
5.8E-02
1.3E+00
1.6E-01
1.1E+00
1.7E+00
3.8E-01
1.4E-01
1.8E-01
6.9E-01
6.2E-01
3.1E-01
7.6E-01
1.5E-01
3.8E-01
Kidney
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
6.6E-01
3.2E+00
1.3E+00
2.6E-01
1.5E+00
l.OE+01
1.9E+00
3.6E+00
4.0E+00
2.6E+00
8.5E-01
1.2E+00
1.2E-01
6.2E-01
2.2E-01
1.1E-01
2.4E-01
1.7E-01
1.2E-01
1.9E+00
1.1E+00
2.6E+00
5.0E-01
6.9E+00
5.0E-01
6.2E-01
7.7E-01
7.9E-01
5.8E-01
4.6E-01
9.2E-02
2.0E-01
Liver
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
3.1E-01
1.1E-01
1.3E-01
1.2E+00
2.5E-01
1.7E-01
4.5E-01
5.0E-01
3.6E-01
2.3E-01
1.3E-01
1.9E-01
7.6E-02
l.OE-01
6.3E-02
4.2E-02
l.OE-01
9.3E-02
1.8E-01
9.4E-02
3.5E-01
2.7E-02
1.8E-01
4.3E-01
2.8E-01
1.4E+00
3.7E-01
3.2E-01
1.1E+00
8.6E-02
1.2E+00
1.2E+00
Whole
Body
1.1E-03
1.2E-03
1.3E-03
8.3E-04
1.5E-03
2.0E-03
9.3E-04
1.1E-03
1.1E-03
1.2E-03
5.5E-03
9.3E-03
6.2E-02
1.3E-01
5.3E-02
4.4E-02
1.1E-01
3.3E-02
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Fish Risk_Tissue Burden:
5/8/2002
Page 1 of 3
-------
Appendix G
Risk Calculations to Fish Based on Tissue Burdens
WB = sum(Ki * Ci) / sum(Ki)
Hazard Quotients
Parameter
Copper
Copper
Copper
Copper
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Station ID
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Blue River (BR-2)
Species
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brook Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Sample ID
BR-1-3
BR-1-4
BR-1-5
BR-1-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-1-1
BR-1-2
BR-1-3
BR-1-4
BR-1-5
BR-1-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-1-1
BR-1-2
BR-1-3
BR-1-4
BR-1-5
BR-1-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
BR-2-5
BR-2-6
BR-2-1
BR-2-2
BR-2-3
BR-2-4
Fillet
(mg/kg dw)
3.1E-01
2.9E-01
2.2E-01
4.6E-01
2.3E-02
1.2E-02
1.2E-02
6.8E-02
2.5E-02
l.OE-02
9.2E-03
7.7E-02
2.7E-02
4.2E-02
2.6E-02
6.4E-02
2.3E-02
1.1E-02
1.2E-02
6.1E-02
1.1E-02
2.6E-02
1.6E-01
1.4E-01
1.4E-01
4.6E-01
2.7E-01
9.2E-02
l.OE-01
4.9E-01
2.0E-01
2.0E-01
1.4E-01
3.3E-01
2.1E-01
1.5E-01
9.8E-02
l.OE+00
9.3E-01
2.6E-01
6.7E+00
8.5E+00
6.0E+00
8.3E+00
9.9E+00
7.6E+00
5.0E+00
7.3E+00
5.4E+00
9.0E+00
Gonad
(mg/kg dw)
7.1E+00
4.2E+00
1.9E+00
l.OE+01
2.9E-02
2.6E-02
1.5E-02
4.8E-02
1.4E-01
2.1E-01
2.7E-02
3.2E-02
3.0E-02
3.2E-02
1.7E-01
4.1E-02
6.7E-02
2.1E-01
4.8E-02
2.6E-02
1.4E-01
9.3E-03
3.3E-01
1.5E+00
2.7E-01
1.9E+00
4.0E+00
7.6E-01
3.8E-01
4.7E-01
2.0E+00
4.8E-01
1.1E+00
2.4E+00
5.6E-01
1.6E+00
1.2E+01
8.9E+00
1.1E+00
1.4E+01
1.9E+01
7.0E+01
2.3E+01
7.8E+01
l.OE+02
5.5E+01
1.3E+02
1.2E+02
7.3E+01
3.3E+01
Kidney
(mg/kg dw)
3.6E+00
2.1E+00
2.3E+00
3.3E+00
1.2E+00
1.2E+00
4.7E-01
1.3E-01
6.2E-01
3.1E+00
1.8E+00
2.8E+00
1.7E+00
1.9E+00
1.7E+00
7.0E-01
7.3E-01
7.3E-01
4.9E-01
7.1E-01
2.6E-01
2.8E-01
9.0E-01
1.8E+00
1.5E+00
2.8E+00
2.3E+00
8.6E+00
9.2E-01
1.3E+00
1.2E+00
2.0E+00
1.6E+00
1.2E+00
l.OE+00
2.9E+00
1.6E+00
1.5E+00
1.6E+00
1.8E+00
6.8E+01
1.7E+02
7.9E+01
9.6E+01
2.7E+02
5.9E+02
1.1E+02
1.2E+02
1.1E+02
1.1E+02
Liver
(mg/kg dw)
1.5E+02
1.4E+02
5.2E+02
6.2E+02
3.2E-01
1.4E-01
1.4E-01
7.3E-01
4.1E-01
8.9E-02
1.2E-01
1.8E-01
l.OE-01
l.OE-01
9.8E-02
9.8E-02
9.8E-02
5.2E-02
4.6E-02
1.7E-01
7.7E-02
3.2E-02
2.2E+00
3.1E+00
2.3E+00
2.0E+00
3.3E+00
3.9E+00
1.8E+00
2.9E+00
1.9E+00
2.5E+00
1.4E+00
2.2E+00
1.8E+00
2.0E+00
2.7E+00
3.2E+00
2.4E+00
3.7E+00
8.6E+01
1.1E+02
8.2E+01
7.5E+01
1.5E+02
1.5E+02
3.8E+01
5.3E+01
3.5E+01
4.2E+01
Estimated Whole Body
(mg/kg dw)
2.6E+00
2.3E+00
7.6E+00
9.5E+00
4.1E-02
2.7E-02
1.9E-02
7.8E-02
3.9E-02
5.0E-02
3.2E-02
1.1E-01
4.7E-02
6.3E-02
4.9E-02
7.2E-02
3.3E-02
2.4E-02
1.8E-02
6.9E-02
1.7E-02
2.9E-02
2.0E-01
2.2E-01
1.8E-01
5.4E-01
4.0E-01
2.6E-01
1.4E-01
5.3E-01
2.7E-01
2.6E-01
1.9E-01
4.1E-01
2.5E-01
2.4E-01
3.7E-01
1.2E+00
9.7E-01
5.9E-01
8.8E+00
1.3E+01
8.3E+00
1.2E+01
1.7E+01
1.7E+01
9.0E+00
1.1E+01
8.3E+00
1.1E+01
Fillet
1.2E-01
1.1E-01
8.6E-02
1.8E-01
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Gonad
l.OE+00
6.0E-01
2.8E-01
1.4E+00
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Kidney
2.2E-01
1.2E-01
1.4E-01
2.0E-01
1.8E-03
1.7E-03
6.6E-04
1.8E-04
8.9E-04
4.4E-03
2.6E-03
4.0E-03
2.4E-03
2.6E-03
2.5E-03
9.9E-04
l.OE-03
l.OE-03
7.1E-04
l.OE-03
3.6E-04
3.9E-04
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
3.7E-01
9.4E-01
4.3E-01
5.2E-01
1.5E+00
3.2E+00
5.7E-01
6.7E-01
6.1E-01
5.7E-01
Liver
6.2E-01
5.7E-01
2.2E+00
2.6E+00
3.2E-03
1.4E-03
1.4E-03
7.3E-03
4.1E-03
8.9E-04
1.2E-03
1.8E-03
l.OE-03
l.OE-03
9.8E-04
9.8E-04
9.8E-04
5.2E-04
4.6E-04
1.7E-03
7.7E-04
3.2E-04
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
2.9E-01
3.7E-01
2.7E-01
2.5E-01
4.9E-01
4.9E-01
1.3E-01
1.8E-01
1.2E-01
1.4E-01
Whole
Body
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Fish Risk_Tissue Burden:
5/8/2002
Page 2 of 3
-------
Appendix G
Risk Calculations to Fish Based on Tissue Burdens
WB = sum(Ki * Ci) / sum(Ki)
Hazard Quotients
Parameter
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Station ID
Blue River (BR-2)
Blue River (BR-2)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Blue River Reference (BR-1)
Species
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Brown Trout
Sample ID
BR-2-5
BR-2-6
BR-1-1
BR-1-2
BR-1-3
BR-1-4
BR-1-5
BR-1-6
Fillet
(mg/kg dw)
9.4E+00
7.8E+00
5.1E+00
4.9E+00
3.6E+00
7.9E+00
5.2E+00
6.3E+00
Gonad
(mg/kg dw)
1.9E+02
9.7E+01
3.2E+01
2.4E+02
8.7E+01
5.9E+01
1.7E+02
6.0E+01
Kidney
(mg/kg dw)
6.3E+01
5.2E+01
2.3E+01
4.3E+01
3.9E+01
2.9E+01
2.9E+01
4.0E+01
Liver
(mg/kg dw)
3.5E+01
4.1E+01
2.3E+01
2.5E+01
2.5E+01
2.4E+01
3.7E+01
4.0E+01
Estimated Whole Body
(m (./!<.(. d»)
1.4E+01
l.OE+01
6.1E+00
l.OE+01
5.8E+00
9.3E+00
8.9E+00
8.1E+00
Fillet
NC
NC
NC
NC
NC
NC
NC
NC
Gonad
NC
NC
NC
NC
NC
NC
NC
NC
Kidney
3.4E-01
2.8E-01
1.2E-01
2.3E-01
2.1E-01
1.6E-01
1.6E-01
2.2E-01
Liver
1.2E-01
1.4E-01
7.8E-02
8.4E-02
8.4E-02
8.0E-02
1.2E-01
1.3E-01
Whole
Body
NC
NC
NC
NC
NC
NC
NC
NC
Non-detects are evaluated at 1/2 the detection limit.
Fish Risk_Tissue Burden: Data & HQs
5/8/2002
Page 3 of 3
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Sediment
COPCs
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Arsenic
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
General Location
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
Station ID
BR-Dillon
BR-BFG
BR- Adams St
FG-9
FG-9A
FG-1
FG-0
TS-4
FG-7
TS-3
BR-BFG
BR-Dillon
BR- Adams St
FG-9A
FG-9
FG-1
FG-0
TS-3
FG-7
TS-4
Stream Sed. 3
Stream Sed. 5
Stream Sed. 4
Stream Sed. 2
Bank Sed. 2
Stream Sed. 6
Bank Sed. 1
Dead Elk Sed. 1
Stream Sed. 1
Dead Elk Sed. 2
BR-Dillon
BR-BFG
BR-Adams St
FG-9A
FG-9
FG-1
FG-0
TS-4
FG-7
TS-3
Dead Elk Sed. 2
Stream Sed. 3
Stream Sed. 4
Stream Sed. 2
Stream Sed. 5
Stream Sed. 1
Stream Sed. 6
Bank Sed. 1
Analysis Type
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Adj Units
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
ND Adj Cone
83000
76000
78000
73000
58000
80000
75000
66000
60000
60000
23
24
13
120
36
62
59
180
110
110
160
107
216
138
109
102
72
58
200
104
15
11
2.8
82
57
6.1
5.8
91
110
210
76.5
109
110
69.1
35.3
151
54.3
51.7
Low
Benchmark
13500
13500
13500
13500
13500
13500
13500
13500
13500
13500
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
9.79
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
0.99
High Benchmark
73160
73160
73160
73160
73160
73160
73160
73160
73160
73160
33
33
33
33
33
33
33
33
33
33
33
33
33
33
33
33
33
33
33
33
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
HQlow
6E+00
6E+00
6E+00
5E+00
4E+00
6E+00
6E+00
5E+00
4E+00
4E+00
2E+00
2E+00
1E+00
1E+01
4E+00
6E+00
6E+00
2E+01
1E+01
1E+01
2E+01
1E+01
2E+01
1E+01
1E+01
1E+01
7E+00
6E+00
2E+01
1E+01
2E+01
1E+01
3E+00
8E+01
6E+01
6E+00
6E+00
9E+01
1E+02
2E+02
8E+01
1E+02
1E+02
7E+01
4E+01
2E+02
5E+01
5E+01
HQ high
1E+00
1E+00
1E+00
1E+00
8E-01
1E+00
1E+00
9E-01
8E-01
8E-01
7E-01
7E-01
4E-01
4E+00
1E+00
2E+00
2E+00
5E+00
3E+00
3E+00
5E+00
3E+00
7E+00
4E+00
3E+00
3E+00
2E+00
2E+00
6E+00
3E+00
3E+00
2E+00
6E-01
2E+01
1E+01
1E+00
1E+00
2E+01
2E+01
4E+01
2E+01
2E+01
2E+01
1E+01
7E+00
3E+01
1E+01
1E+01
Revised Aquatic Risk_Sed: HQ Calcs
5/8/2002
Page 1 of 4
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Sediment
COPCs
Cadmium
Cadmium
Chromium
Chromium
Chromium
Chromium
Chromium
Chromium
Chromium
Chromium
Chromium
Chromium
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Lead
Lead
Lead
Lead
Lead
Lead
General Location
South Branch French Gulch - AB
South Branch French Gulch - AB
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
Station ID
Dead Elk Sed. 1
Bank Sed. 2
BR-Dillon
BR-BFG
BR- Adams St
FG-9
FG-9A
FG-0
FG-1
TS-4
TS-3
FG-7
BR-Dillon
BR-BFG
BR- Adams St
FG-9A
FG-9
FG-1
FG-0
TS-3
FG-7
TS-4
BR-BFG
BR-Dillon
BR-Adams St
FG-9A
FG-9
FG-1
FG-0
FG-7
TS-4
TS-3
Dead Elk Sed. 1
Bank Sed. 1
Stream Sed. 4
Stream Sed. 2
Dead Elk Sed. 2
Stream Sed. 5
Bank Sed. 2
Stream Sed. 1
Stream Sed. 6
Stream Sed. 3
BR-BFG
BR-Dillon
BR-Adams St
FG-9
FG-9A
FG-0
Analysis Type
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Adj Units
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
ND Adj Cone
42.1
43.6
82
75
63
53
35
54
50
40
34
34
68
110
45
320
210
66
46
490
310
280
46000
44000
36000
122000
49000
38000
39000
106000
71000
63000
59500
43000
133000
93300
151000
60400
56000
50400
54800
55800
640
320
160
1800
2300
150
Low
Benchmark
0.99
0.99
93.4
93.4
93.4
93.4
93.4
93.4
93.4
93.4
93.4
93.4
31.6
31.6
31.6
31.6
31.6
31.6
31.6
31.6
31.6
31.6
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
188400
35.8
35.8
35.8
35.8
35.8
35.8
High Benchmark
4.98
4.98
111
111
111
111
111
111
111
111
111
111
149
149
149
149
149
149
149
149
149
149
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
289900
128
128
128
128
128
128
HQlow
4E+01
4E+01
9E-01
8E-01
7E-01
6E-01
4E-01
6E-01
5E-01
4E-01
4E-01
4E-01
2E+00
3E+00
1E+00
1E+01
7E+00
2E+00
1E+00
2E+01
1E+01
9E+00
2E-01
2E-01
2E-01
6E-01
3E-01
2E-01
2E-01
6E-01
4E-01
3E-01
3E-01
2E-01
7E-01
5E-01
8E-01
3E-01
3E-01
3E-01
3E-01
3E-01
2E+01
9E+00
4E+00
5E+01
6E+01
4E+00
HQ high
8E+00
9E+00
7E-01
7E-01
6E-01
5E-01
3E-01
5E-01
5E-01
4E-01
3E-01
3E-01
5E-01
7E-01
3E-01
2E+00
1E+00
4E-01
3E-01
3E+00
2E+00
2E+00
2E-01
2E-01
1E-01
4E-01
2E-01
1E-01
1E-01
4E-01
2E-01
2E-01
2E-01
1E-01
5E-01
3E-01
5E-01
2E-01
2E-01
2E-01
2E-01
2E-01
5E+00
3E+00
1E+00
1E+01
2E+01
1E+00
Revised Aquatic Risk_Sed: HQ Calcs
5/8/2002
Page 2 of 4
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Sediment
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Manganese
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Silver
Silver
Silver
Silver
General Location
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Blue River
Blue River
Blue River Reference
French Gulch
Station ID
FG-1
FG-7
TS-4
TS-3
Bank Sed. 2
Dead Elk Sed. 1
Stream Sed. 3
Stream Sed. 6
Stream Sed. 5
Bank Sed. 1
Stream Sed. 4
Stream Sed. 2
Stream Sed. 1
Dead Elk Sed. 2
BR-Dillon
BR-BFG
BR-Adams St
FG-9A
FG-9
FG-0
FG-1
FG-7
TS-3
TS-4
BR-BFG
BR-Dillon
BR-Adams St
FG-9
FG-9A
FG-0
FG-1
TS-3
TS-4
FG-7
BR-Dillon
BR-BFG
BR-Adams St
FG-9A
FG-9
FG-1
FG-0
TS-4
FG-7
TS-3
BR-BFG
BR-Dillon
BR-Adams St
FG-9A
Analysis Type
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Adj Units
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
ND Adj Cone
380
1900
1800
6500
1380
1570
2640
1150
1020
819
3410
3510
3840
2020
1300
1600
1300
9100
4400
1300
770
12000
3600
3300
0.25
0.22
0.1
0.25
0.29
0.05
0.27
0.35
0.29
0.28
33
32
27
31
28
27
30
27
32
23
3.7
1.9
1.3
18.6
Low
Benchmark
35.8
35.8
35.8
35.8
35.8
35.8
35.8
35.8
35.8
35.8
35.8
35.8
35.8
35.8
631
631
631
631
631
631
631
631
631
631
0.18
0.18
0.18
0.18
0.18
0.18
0.18
0.18
0.18
0.18
22.7
22.7
22.7
22.7
22.7
22.7
22.7
22.7
22.7
22.7
0.73
0.73
0.73
0.73
High Benchmark
128
128
128
128
128
128
128
128
128
128
128
128
128
128
4460
4460
4460
4460
4460
4460
4460
4460
4460
4460
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1.06
48.6
48.6
48.6
48.6
48.6
48.6
48.6
48.6
48.6
48.6
3.7
3.7
3.7
3.7
HQlow
1E+01
5E+01
5E+01
2E+02
4E+01
4E+01
7E+01
3E+01
3E+01
2E+01
1E+02
1E+02
1E+02
6E+01
2E+00
3E+00
2E+00
1E+01
7E+00
2E+00
1E+00
2E+01
6E+00
5E+00
1E+00
1E+00
6E-01
1E+00
2E+00
3E-01
2E+00
2E+00
2E+00
2E+00
1E+00
1E+00
1E+00
1E+00
1E+00
1E+00
1E+00
1E+00
1E+00
1E+00
5E+00
3E+00
2E+00
3E+01
HQ high
3E+00
1E+01
1E+01
5E+01
1E+01
1E+01
2E+01
9E+00
8E+00
6E+00
3E+01
3E+01
3E+01
2E+01
3E-01
4E-01
3E-01
2E+00
1E+00
3E-01
2E-01
3E+00
8E-01
7E-01
2E-01
2E-01
9E-02
2E-01
3E-01
5E-02
3E-01
3E-01
3E-01
3E-01
7E-01
7E-01
6E-01
6E-01
6E-01
6E-01
6E-01
6E-01
7E-01
5E-01
1E+00
5E-01
4E-01
5E+00
Revised Aquatic Risk_Sed: HQ Calcs
5/8/2002
Page 3 of 4
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Sediment
COPCs
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
General Location
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
Blue River
Blue River
Blue River Reference
French Gulch
French Gulch
French Gulch Reference
French Gulch Reference
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
South Branch French Gulch - AB
Station ID
FG-9
FG-1
FG-0
TS-4
TS-3
FG-7
Dead Elk Sed. 2
Stream Sed. 1
Stream Sed. 3
Stream Sed. 4
Stream Sed. 2
Bank Sed. 2
Stream Sed. 6
Stream Sed. 5
Bank Sed. 1
Dead Elk Sed. 1
BR-BFG
BR-Dillon
BR- Adams St
FG-9A
FG-9
FG-1
FG-0
FG-7
TS-4
TS-3
Bank Sed. 2
Stream Sed. 1
Stream Sed. 4
Stream Sed. 3
Dead Elk Sed. 2
Stream Sed. 2
Bank Sed. 1
Stream Sed. 6
Stream Sed. 5
Dead Elk Sed. 1
Analysis Type
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Total
Adj Units
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
mg/kg
ND Adj Cone
6.7
2.1
1.1
17.2
30
17.9
90
33.7
28.5
24
22
7.6
6.8
5.5
4.2
9.7
3000
2300
600
18000
9000
780
630
22000
17000
35000
5500
25400
18600
18000
15900
12000
7220
6320
4790
6360
Low
Benchmark
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
121
High Benchmark
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
3.7
459
459
459
459
459
459
459
459
459
459
459
459
459
459
459
459
459
459
459
459
HQlow
9E+00
3E+00
2E+00
2E+01
4E+01
2E+01
1E+02
5E+01
4E+01
3E+01
3E+01
1E+01
9E+00
8E+00
6E+00
1E+01
2E+01
2E+01
5E+00
1E+02
7E+01
6E+00
5E+00
2E+02
1E+02
3E+02
5E+01
2E+02
2E+02
1E+02
1E+02
1E+02
6E+01
5E+01
4E+01
5E+01
HQ high
2E+00
6E-01
3E-01
5E+00
8E+00
5E+00
2E+01
9E+00
8E+00
6E+00
6E+00
2E+00
2E+00
1E+00
1E+00
3E+00
7E+00
5E+00
1E+00
4E+01
2E+01
2E+00
1E+00
5E+01
4E+01
8E+01
1E+01
6E+01
4E+01
4E+01
3E+01
3E+01
2E+01
1E+01
1E+01
1E+01
Revised Aquatic Risk_Sed: HQ Calcs
5/8/2002
Page 4 of 4
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
General Location
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
FG-4
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
1121
1121
1140
FG-6
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6B
FG-6B
FG-6C
FG-6C
FG-6C
FG-6C
Sample Date
22-Sep-92
23-Sep-99
22-Jul-96
ll-Jun-96
23-Aug-94
19-Aug-99
05-Sep-99
16-Nov-93
21-Oct-93
22-Sep-92
17-Nov-99
23-Sep-99
13-Apr-OO
10-May-OO
21-Jun-OO
13-Sep-OO
05-Sep-99
19-Aug-99
23-Sep-99
05-Sep-99
05-Sep-99
23-Sep-99
21-Oct-93
22-Sep-92
19-Aug-99
23-Aug-94
ll-Jun-96
16-Nov-93
17-Nov-99
13-Jun-96
23-Jul-96
13-Jun-96
ll-Jun-96
22-Sep-92
16-Nov-93
ll-Jun-96
21-Oct-93
22-Jul-96
23-Aug-94
22-Jul-96
23-Aug-94
22-Jul-99
05-Sep-99
05-Sep-99
ll-Jun-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
25
15
20
20
15
15
15
20
20
25
15
15
20.9
15.2
31.4
14.1
15
15
15
15
15
15
20
25
15
15
20
20
15
20
81
679
2241
25
20
20
20
46
15
20
59
15
30
100
371
Hardness (mg/L)
61
64
46
37
54
54
52
65
66
62
84
75
-
-
—
-
64
65
75
64
66
76
109
95
66
97
55
109
89
215
446
728
1070
440
625
722
679
908
699
1230
1362
742
882
882
2020
AWQC acute
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
AWQC chronic
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
HQ acute
3E-02
2E-02
3E-02
3E-02
2E-02
2E-02
2E-02
3E-02
3E-02
3E-02
2E-02
2E-02
3E-02
2E-02
4E-02
2E-02
2E-02
2E-02
2E-02
2E-02
2E-02
2E-02
3E-02
3E-02
2E-02
2E-02
3E-02
3E-02
2E-02
3E-02
1E-01
9E-01
3E+00
3E-02
3E-02
3E-02
3E-02
6E-02
2E-02
3E-02
8E-02
2E-02
4E-02
1E-01
5E-01
HQ chronic
3E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
3E-01
2E-01
2E-01
2E-01
2E-01
4E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
3E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
9E-01
8E+00
3E+01
3E-01
2E-01
2E-01
2E-01
5E-01
2E-01
2E-01
7E-01
2E-01
3E-01
1E+00
4E+00
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 1 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
General Location
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Station ID
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
TS-3
TS-4
TS-4
FG-0
FG-0
FG-1
FG-1
FG-1
FG-1
FG-1
FG-2
FG-3
FG-3
FG-3
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
Sample Date
22-Jul-96
05-Sep-99
19-Aug-99
17-Nov-99
23-Sep-99
13-Apr-OO
10-May-OO
21-Jun-OO
19-Jul-OO
22-Jul-96
ll-Jun-96
16-Nov-93
21-Oct-93
22-Sep-92
25-May-96
05-Jun-96
05-Jun-96
23-Aug-94
17-Nov-99
23-Sep-99
05-Sep-99
19-Aug-99
23-May-96
25-May-96
06-Jun-96
22-Sep-92
23-May-96
22-Jul-96
12-Jun-96
22-Sep-92
25-Oct-95
23-May-96
22-Sep-92
12-Jun-96
22-Sep-92
22-Jul-96
16-May-96
26-May-96
17-Apr-96
22-Feb-96
21-Jun-96
25-Jun-96
13-Dec-96
21-Nov-95
16-Jan-97
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
118
100
30
30
30
193
81
339
281
156
20
20
20
25
20
10
20
15
15
15
15
15
6
20
10
25
9
20
146
25
2
8
25
20
25
20
20
20
20
7
7
7
7
8
8
Hardness (mg/L)
1720
882
659
972
1010
-
-
-
—
96
68
120
123
102
-
58
58
93
201
201
184
196
46
47
53
47
34
41
37
53
48
34
55
39
62
46
82
62
160
150
62
65
140
120
140
AWQC acute
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
AWQC chronic
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
HQ acute
2E-01
1E-01
4E-02
4E-02
4E-02
3E-01
1E-01
5E-01
4E-01
2E-01
3E-02
3E-02
3E-02
3E-02
3E-02
1E-02
3E-02
2E-02
2E-02
2E-02
2E-02
2E-02
8E-03
3E-02
1E-02
3E-02
1E-02
3E-02
2E-01
3E-02
3E-03
1E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
9E-03
9E-03
9E-03
9E-03
1E-02
1E-02
HQ chronic
1E+00
1E+00
3E-01
3E-01
3E-01
2E+00
9E-01
4E+00
3E+00
2E+00
2E-01
2E-01
2E-01
3E-01
2E-01
1E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
7E-02
2E-01
1E-01
3E-01
1E-01
2E-01
2E+00
3E-01
2E-02
9E-02
3E-01
2E-01
3E-01
2E-01
2E-01
2E-01
2E-01
8E-02
8E-02
8E-02
8E-02
9E-02
9E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 2 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
General Location
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Discharge
Discharge
Discharge
Discharge
Discharge
Discharge
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Station ID
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-9A
FG-9A
CBMA-1
KDS
KDS
MGB-1
RLCVT-1
WP-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
Sample Date
10-Jun-96
16-Nov-93
23-Oct-95
19-Jan-96
22-May-96
05-Sep-99
17-Nov-99
23-Sep-99
23-Aug-94
19-Aug-99
21-Feb-97
21-Mar-96
09-Sep-96
22-Sep-92
18-Jul-96
15-Aug-96
21-Oct-93
13-Nov-96
08-Oct-96
21-Jun-OO
23-Aug-94
22-Jul-96
ll-Jun-96
23-Jul-96
13-Jun-96
24-Aug-94
23-Jul-96
23-Jul-96
12-Jun-96
16-Nov-93
21-Oct-93
10-Jun-96
13-Sep-OO
21-Jun-OO
13-Apr-OO
10-May-OO
22-Sep-92
17-Nov-99
19-Aug-99
23-Sep-99
05-Sep-99
17-Nov-99
23-Sep-99
23-Jul-96
23-Aug-94
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
20
20
10
10
10
15
15
15
15
15
6
4
5
25
5
5
20
6
5
19.1
15
20
20
40
163
42
40
40
95854
20
20
20
75.5
118
171
1360
25
15
15
15
15
15
15
20
15
Hardness (mg/L)
65
125
110
150
75
85
113
102
102
87
160
140
110
103
18
99
121
120
110
-
96
85
65
224
296
222
82
86
4980
67
71
54
—
-
-
-
66
69
61
71
60
70
72
42
61
AWQC acute
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
AWQC chronic
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
HQ acute
3E-02
3E-02
1E-02
1E-02
1E-02
2E-02
2E-02
2E-02
2E-02
2E-02
8E-03
5E-03
7E-03
3E-02
7E-03
7E-03
3E-02
8E-03
7E-03
3E-02
2E-02
3E-02
3E-02
5E-02
2E-01
6E-02
5E-02
5E-02
1E+02
3E-02
3E-02
3E-02
1E-01
2E-01
2E-01
2E+00
3E-02
2E-02
2E-02
2E-02
2E-02
2E-02
2E-02
3E-02
2E-02
HQ chronic
2E-01
2E-01
1E-01
1E-01
1E-01
2E-01
2E-01
2E-01
2E-01
2E-01
7E-02
5E-02
6E-02
3E-01
6E-02
6E-02
2E-01
7E-02
6E-02
2E-01
2E-01
2E-01
2E-01
5E-01
2E+00
5E-01
5E-01
5E-01
1E+03
2E-01
2E-01
2E-01
9E-01
1E+00
2E+00
2E+01
3E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 3 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
General Location
Blue River Reference
Blue River Reference
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
Station ID
BR-Adams St
BR-Adams St
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-4
BR-5
BR-5
BR-5
BR-BFG
BR-BFG
BR-Dillon
FG-4
FG-4
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
Sample Date
24-Oct-95
21-May-96
05-Sep-99
16-Nov-93
22-Aug-94
23-Jul-96
10-Jun-96
19-Aug-99
22-Sep-92
21-Oct-93
17-Nov-99
13-Apr-OO
23-Sep-99
10-May-OO
21-Jun-OO
19-Jul-OO
13-Sep-OO
17-Nov-99
10-May-OO
13-Apr-OO
21-Oct-93
10-Jun-96
19-Aug-99
16-Nov-93
13-Sep-OO
23-Jul-96
21-Jun-OO
22-Aug-94
23-Sep-99
05-Sep-99
22-Sep-92
23-Jul-96
23-Jul-96
22-Sep-92
25-Oct-95
22-May-96
24-May-96
22-Sep-92
21-Sep-89
03-Nov-98
22-Sep-98
22-Sep-92
21-Oct-93
16-Nov-93
ll-Jun-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
5
10
15
20
15
20
20
15
25
20
15
95.5
15
32.8
66.2
17
31.9
15
42.7
16.3
20
20
15
20
19.6
20
36.7
15
15
15
25
20
20
25
5
10
7
0.25
0.15
0.2
0.2
0.25
0.25
0.25
0.25
Hardness (mg/L)
68
57
81
126
76
49
58
75
102
121
103
-
93
-
-
-
—
70
-
-
76
54
65
75
—
50
-
70
72
63
73
52
52
72
86
59
47
61
58
-
—
62
66
65
37
AWQC acute
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
7.5E+02
1.2E+00
1.2E+00
nc
nc
1.3E+00
1.3E+00
1.3E+00
7.7E-01
AWQC chronic
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
8.7E+01
1.7E-01
1.7E-01
nc
nc
1.8E-01
1.8E-01
1.8E-01
1.2E-01
HQ acute
7E-03
1E-02
2E-02
3E-02
2E-02
3E-02
3E-02
2E-02
3E-02
3E-02
2E-02
1E-01
2E-02
4E-02
9E-02
2E-02
4E-02
2E-02
6E-02
2E-02
3E-02
3E-02
2E-02
3E-02
3E-02
3E-02
5E-02
2E-02
2E-02
2E-02
3E-02
3E-02
3E-02
3E-02
7E-03
1E-02
9E-03
2E-01
1E-01
nc
nc
2E-01
2E-01
2E-01
3E-01
HQ chronic
6E-02
1E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
3E-01
2E-01
2E-01
1E+00
2E-01
4E-01
8E-01
2E-01
4E-01
2E-01
5E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
2E-01
4E-01
2E-01
2E-01
2E-01
3E-01
2E-01
2E-01
3E-01
6E-02
1E-01
8E-02
1E+00
9E-01
nc
nc
1E+00
1E+00
1E+00
2E+00
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 4 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
General Location
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
1121
1121
1140
FG-6
FG-6A
FG-6A
FG-6A
Sample Date
22-Jul-96
23-Aug-94
10-Jun-99
14-Jul-99
08-Oct-99
19-Aug-99
23-Sep-99
05-Sep-99
13-Sep-99
04-May-89
23-Sep-99
05-Sep-99
19-Aug-99
13-Sep-99
13-Sep-99
07-Oct-99
05-Sep-99
17-Nov-99
Ol-Nov-99
07-Oct-99
23-Sep-99
23-Sep-99
14-Sep-99
17-Nov-99
02-Nov-99
08-Oct-99
22-Sep-92
21-Sep-89
04-May-89
05-Sep-99
19-Aug-99
14-Jul-99
21-Oct-93
10-Jun-99
23-Aug-94
22-Jul-96
ll-Jun-96
16-Nov-93
13-Jun-96
23-Jul-96
13-Jun-96
ll-Jun-96
23-Aug-94
21-Oct-93
22-Jul-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.25
0.25
0.3
0.1
0.2
0.1
0.1
0.3
0.3
0.15
2.1
2.4
2.5
2.3
2.3
1.8
2.4
1.5
1.1
1.8
2.1
2.2
2.3
3.1
2.7
2.4
4.6
1.9
1.8
2.1
2.4
2.2
7.5
1.2
3.2
3
2.8
4.6
37.6
136
95.3
309
20
24
71
Hardness (mg/L)
46
54
-
-
63
54
64
52
60
84
75
64
65
71
71
76
64
84
82
76
75
76
71
89
86
73
95
92
97
66
66
-
109
-
97
64
55
109
215
446
728
1070
699
679
908
AWQC acute
9.5E-01
1.1E+00
nc
nc
1.3E+00
1.1E+00
1.3E+00
1.1E+00
1.2E+00
1.7E+00
1.5E+00
1.3E+00
1.3E+00
1.4E+00
1.4E+00
1.5E+00
1.3E+00
1.7E+00
1.7E+00
1.5E+00
1.5E+00
1.5E+00
1.4E+00
1.8E+00
1.7E+00
1.5E+00
1.9E+00
1.9E+00
2.0E+00
1.3E+00
1.3E+00
nc
2.2E+00
nc
1.9E+00
1.3E+00
1.1E+00
2.2E+00
4.2E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
AWQC chronic
1.4E-01
1.6E-01
nc
nc
1.8E-01
1.6E-01
1.8E-01
1.6E-01
1.7E-01
2.2E-01
2.0E-01
1.8E-01
1.8E-01
1.9E-01
1.9E-01
2.0E-01
1.8E-01
2.2E-01
2.1E-01
2.0E-01
2.0E-01
2.0E-01
1.9E-01
2.3E-01
2.2E-01
2.0E-01
2.4E-01
2.3E-01
2.4E-01
1.8E-01
1.8E-01
nc
2.6E-01
nc
2.4E-01
1.8E-01
1.6E-01
2.6E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
HQ acute
3E-01
2E-01
nc
nc
2E-01
9E-02
8E-02
3E-01
2E-01
9E-02
1E+00
2E+00
2E+00
2E+00
2E+00
1E+00
2E+00
9E-01
7E-01
1E+00
1E+00
1E+00
2E+00
2E+00
2E+00
2E+00
2E+00
1E+00
9E-01
2E+00
2E+00
nc
3E+00
nc
2E+00
2E+00
2E+00
2E+00
9E+00
2E+01
1E+01
4E+01
3E+00
3E+00
1E+01
HQ chronic
2E+00
2E+00
nc
nc
1E+00
6E-01
6E-01
2E+00
2E+00
7E-01
1E+01
1E+01
1E+01
1E+01
1E+01
9E+00
1E+01
7E+00
5E+00
9E+00
1E+01
1E+01
1E+01
1E+01
1E+01
1E+01
2E+01
8E+00
7E+00
1E+01
1E+01
nc
3E+01
nc
1E+01
2E+01
2E+01
2E+01
9E+01
3E+02
2E+02
8E+02
5E+01
6E+01
2E+02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 5 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
General Location
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6B
FG-6B
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
Sample Date
ll-Jun-96
16-Nov-93
22-Sep-92
21-Sep-89
04-May-89
23-Aug-94
22-Jul-96
21-Jun-OO
14-Jul-99
22-Sep-98
07-May-99
22-Jul-96
ll-Jun-96
07-Apr-99
03-Nov-98
02-Dec-98
03-Mar-99
04-Feb-99
22-Jul-99
10-Jun-99
23-Sep-99
17-Nov-99
07-Oct-99
13-Sep-99
05-Sep-99
05-Sep-99
05-Sep-99
19-Aug-99
02-Nov-99
17-Nov-99
Ol-Nov-99
07-Oct-99
22-Sep-92
04-May-89
05-Jun-96
05-Jun-96
23-Sep-99
10-Jun-99
14-Sep-99
05-Sep-99
19-Aug-99
14-Jul-99
21-Oct-93
10-Jun-99
16-Nov-93
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
102
21.6
14.9
43
25
60.1
114
50
66.3
41
44.2
281
381
36
42.3
23
37
39.9
71
15.9
65.1
55.3
65.5
71.9
71.4
72.9
72.9
73.5
64.8
20.2
17.8
16.3
6.3
12
7
6
16.7
20.1
17.8
17.2
17.3
16.7
7.4
20.4
9.5
Hardness (mg/L)
722
625
440
656
580
1362
1230
-
—
-
956
1720
2020
-
-
-
—
997
742
-
1010
972
957
839
882
882
882
659
996
201
203
182
102
200
58
58
201
-
189
184
196
-
123
-
120
AWQC acute
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
nc
nc
nc
7.0E+00
7.0E+00
7.0E+00
nc
nc
nc
nc
7.0E+00
7.0E+00
nc
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
7.0E+00
4.0E+00
4.0E+00
3.6E+00
2.0E+00
3.9E+00
1.2E+00
1.2E+00
4.0E+00
nc
3.7E+00
3.6E+00
3.9E+00
nc
2.5E+00
nc
2.4E+00
AWQC chronic
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
nc
nc
nc
4.1E-01
4.1E-01
4.1E-01
nc
nc
nc
nc
4.1E-01
4.1E-01
nc
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.1E-01
4.0E-01
4.0E-01
3.7E-01
2.5E-01
4.0E-01
1.7E-01
1.7E-01
4.0E-01
nc
3.8E-01
3.8E-01
3.9E-01
nc
2.8E-01
nc
2.8E-01
HQ acute
1E+01
3E+00
2E+00
6E+00
4E+00
9E+00
2E+01
nc
nc
nc
6E+00
4E+01
5E+01
nc
nc
nc
nc
6E+00
1E+01
nc
9E+00
8E+00
9E+00
1E+01
1E+01
1E+01
1E+01
1E+01
9E+00
5E+00
4E+00
5E+00
3E+00
3E+00
6E+00
5E+00
4E+00
nc
5E+00
5E+00
4E+00
nc
3E+00
nc
4E+00
HQ chronic
2E+02
5E+01
4E+01
1E+02
6E+01
1E+02
3E+02
nc
nc
nc
1E+02
7E+02
9E+02
nc
nc
nc
nc
1E+02
2E+02
nc
2E+02
1E+02
2E+02
2E+02
2E+02
2E+02
2E+02
2E+02
2E+02
5E+01
4E+01
4E+01
3E+01
3E+01
4E+01
4E+01
4E+01
nc
5E+01
5E+01
4E+01
nc
3E+01
nc
3E+01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 6 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
General Location
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Station ID
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
TS-3
TS-4
TS-4
FG-0
FG-0
FG-0
FG-1
FG-1
FG-1
FG-1
FG-1
FG-1
FG-2
FG-2
FG-2
FG-3
FG-3
FG-3
FG-10
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
Sample Date
25-May-96
25-May-96
25-May-96
23-Aug-94
22-Jul-96
ll-Jun-96
23-May-96
25-May-96
06-Jun-96
21-Sep-89
22-Sep-92
23-May-96
04-May-89
25-Oct-95
23-May-96
22-Sep-92
12-Jun-96
22-Jul-96
04-May-89
22-Sep-92
21-Sep-89
22-Sep-92
12-Jun-96
22-Jul-96
02-Nov-99
19-Jan-96
16-May-96
21-Feb-97
08-Oct-96
21-Sep-89
21-Jun-96
21-Jun-OO
25-Jun-96
08-Dec-OO
13-Sep-OO
23-Aug-OO
18-Jul-96
19-Jul-OO
15-Aug-96
23-Oct-95
09-Sep-96
13-Nov-96
04-May-89
21-Nov-95
22-Feb-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
8
6
5
5.2
11.9
8.1
0.5
5
6
0.15
0.25
0.5
0.15
0.5
0.5
0.25
0.25
0.25
0.15
0.25
0.15
0.25
0.5
0.25
3
9
9
9
7
4.3
6
2.8
6
5.5
4.2
3.6
6
3.2
6
7
7
7
7.1
8
8
Hardness (mg/L)
47
62
58
93
96
68
46
47
53
58
47
34
69
48
34
53
37
41
67
55
60
62
39
46
85
150
82
160
110
102
62
-
65
-
-
-
18
-
99
110
110
120
140
120
150
AWQC acute
9.7E-01
1.3E+00
1.2E+00
1.9E+00
1.9E+00
1.4E+00
9.5E-01
9.7E-01
1.1E+00
1.2E+00
9.7E-01
7.0E-01
1.4E+00
9.9E-01
7.0E-01
1.1E+00
7.7E-01
8.4E-01
1.4E+00
1.1E+00
1.2E+00
1.3E+00
8.0E-01
9.5E-01
1.7E+00
3.0E+00
1.7E+00
3.2E+00
2.2E+00
2.1E+00
1.3E+00
nc
1.3E+00
nc
nc
nc
3.8E-01
nc
2.0E+00
2.2E+00
2.2E+00
2.4E+00
2.8E+00
2.4E+00
3.0E+00
AWQC chronic
1.5E-01
1.8E-01
1.7E-01
2.3E-01
2.4E-01
1.9E-01
1.4E-01
1.5E-01
1.6E-01
1.7E-01
1.5E-01
1.2E-01
1.9E-01
1.5E-01
1.2E-01
1.6E-01
1.2E-01
1.3E-01
1.9E-01
1.6E-01
1.7E-01
1.8E-01
1.3E-01
1.4E-01
2.2E-01
3.3E-01
2.1E-01
3.4E-01
2.6E-01
2.5E-01
1.8E-01
nc
1.8E-01
nc
nc
nc
7.4E-02
nc
2.4E-01
2.6E-01
2.6E-01
2.8E-01
3.1E-01
2.8E-01
3.3E-01
HQ acute
8E+00
5E+00
4E+00
3E+00
6E+00
6E+00
5E-01
5E+00
6E+00
1E-01
3E-01
7E-01
1E-01
5E-01
7E-01
2E-01
3E-01
3E-01
1E-01
2E-01
1E-01
2E-01
6E-01
3E-01
2E+00
3E+00
5E+00
3E+00
3E+00
2E+00
5E+00
nc
5E+00
nc
nc
nc
2E+01
nc
3E+00
3E+00
3E+00
3E+00
3E+00
3E+00
3E+00
HQ chronic
5E+01
3E+01
3E+01
2E+01
5E+01
4E+01
3E+00
3E+01
4E+01
9E-01
2E+00
4E+00
8E-01
3E+00
4E+00
2E+00
2E+00
2E+00
8E-01
2E+00
9E-01
1E+00
4E+00
2E+00
1E+01
3E+01
4E+01
3E+01
3E+01
2E+01
3E+01
nc
3E+01
nc
nc
nc
8E+01
nc
2E+01
3E+01
3E+01
3E+01
2E+01
3E+01
2E+01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 7 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
General Location
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Discharge
Discharge
Discharge
Discharge
Discharge
Discharge
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Station ID
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-9A
FG-9A
FG-9A
CBMA-1
KDS
KDS
MGB-1
RLCVT-1
WP-1
654
654
654
654
654
654
654
Sample Date
22-May-96
26-May-96
13-Dec-96
16-Jan-97
21-Mar-96
17-Apr-96
17-Nov-99
16-Nov-93
21-Oct-93
22-Sep-92
10-Jun-96
24-Sep-98
03-Nov-98
02-Dec-98
03-Mar-99
04-Feb-99
07-Apr-99
14-Jul-99
02-Nov-99
08-Oct-99
23-Sep-99
13-Sep-99
05-Sep-99
19-Aug-99
10-Jun-99
07-May-99
23-Aug-94
22-Jul-96
22-Sep-98
22-Jul-96
ll-Jun-96
23-Aug-94
23-Jul-96
13-Jun-96
24-Aug-94
23-Jul-96
23-Jul-96
12-Jun-96
22-Jul-98
16-May-97
07-Aug-98
10-Sep-97
08-May-97
09-Sep-98
21-May-97
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ND Adj Cone
8
8
8
8
7
11
5.3
7.4
6.6
6
5.7
4.2
5.1
4
7.3
7.7
7.3
2.8
5.5
4
4.1
3.8
3.8
3.4
4.1
7.9
5.4
5.6
4.2
8.9
7.1
5.7
2
17.7
0.5
5
6
19800
0.05
0.05
0.05
0.05
0.05
0.05
0.05
Hardness (mg/L)
75
62
140
140
140
160
113
125
121
103
65
-
—
-
-
175
—
-
108
95
102
92
85
87
—
172
102
84
—
85
65
96
224
296
222
82
86
4980
-
72
—
60
78
-
66
AWQC acute
1.5E+00
1.3E+00
2.8E+00
2.8E+00
2.8E+00
3.2E+00
2.3E+00
2.5E+00
2.4E+00
2.1E+00
1.3E+00
nc
nc
nc
nc
3.5E+00
nc
nc
2.2E+00
1.9E+00
2.1E+00
1.9E+00
1.7E+00
1.8E+00
nc
3.4E+00
2.0E+00
1.7E+00
nc
1.7E+00
1.3E+00
1.9E+00
4.4E+00
5.8E+00
4.4E+00
1.7E+00
1.7E+00
7.0E+00
nc
1.5E+00
nc
1.2E+00
1.6E+00
nc
1.3E+00
AWQC chronic
2.0E-01
1.8E-01
3.1E-01
3.1E-01
3.1E-01
3.4E-01
2.7E-01
2.9E-01
2.8E-01
2.5E-01
1.8E-01
nc
nc
nc
nc
3.6E-01
nc
nc
2.6E-01
2.4E-01
2.5E-01
2.3E-01
2.2E-01
2.2E-01
nc
3.6E-01
2.5E-01
2.2E-01
nc
2.2E-01
1.8E-01
2.4E-01
4.1E-01
4.1E-01
4.1E-01
2.1E-01
2.2E-01
4.1E-01
nc
2.0E-01
nc
1.7E-01
2.1E-01
nc
1.8E-01
HQ acute
5E+00
6E+00
3E+00
3E+00
3E+00
3E+00
2E+00
3E+00
3E+00
3E+00
4E+00
nc
nc
nc
nc
2E+00
nc
nc
3E+00
2E+00
2E+00
2E+00
2E+00
2E+00
nc
2E+00
3E+00
3E+00
nc
5E+00
5E+00
3E+00
5E-01
3E+00
1E-01
3E+00
3E+00
3E+03
nc
3E-02
nc
4E-02
3E-02
nc
4E-02
HQ chronic
4E+01
5E+01
3E+01
3E+01
2E+01
3E+01
2E+01
3E+01
2E+01
2E+01
3E+01
nc
nc
nc
nc
2E+01
nc
nc
2E+01
2E+01
2E+01
2E+01
2E+01
2E+01
nc
2E+01
2E+01
3E+01
nc
4E+01
4E+01
2E+01
5E+00
4E+01
1E+00
2E+01
3E+01
5E+04
nc
3E-01
nc
3E-01
2E-01
nc
3E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 8 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Station ID
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
Sample Date
04-Jun-97
18-Jun-97
10-Oct-97
19-Nov-97
07-Dec-97
23-Sep-98
Ol-Apr-98
05-May-98
24-Sep-97
21-Aug-98
Ol-Jul-98
02-Jul-97
16-Jul-97
21-Aug-97
02-Sep-97
24-Apr-97
18-Jun-97
02-Jul-97
16-Jul-97
05-May-98
21-May-97
02-Sep-97
24-Sep-97
10-Oct-97
07-Dec-97
21-Aug-97
09-Sep-98
23-Sep-98
07-Aug-98
04-Jun-97
24-Apr-97
08-May-97
Ol-Jul-98
10-Sep-97
16-May-97
22-Jul-98
21-Aug-98
23-Aug-94
05-Sep-99
10-Jun-96
23-Jul-96
14-Sep-99
05-May-99
10-Jun-99
10-Jun-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.26
0.05
0.05
0.05
0.05
0.05
0.05
0.11
0.05
0.05
0.2
0.25
0.05
0.05
0.3
0.05
0.05
0.25
0.1
0.25
0.25
0.1
0.2
0.05
0.1
Hardness (mg/L)
62
60
72
96
84
-
100
76
56
-
-
40
60
52
56
86
52
42
44
72
60
52
52
60
—
44
-
60
48
54
84
74
—
44
62
58
50
61
60
54
42
63
95
-
-
AWQC acute
1.3E+00
1.2E+00
1.5E+00
1.9E+00
1.7E+00
nc
2.0E+00
1.5E+00
1.1E+00
nc
nc
8.3E-01
1.2E+00
1.1E+00
1.1E+00
1.7E+00
1.1E+00
8.7E-01
9.1E-01
1.5E+00
1.2E+00
1.1E+00
1.1E+00
1.2E+00
nc
9.1E-01
nc
1.2E+00
9.9E-01
1.1E+00
1.7E+00
1.5E+00
nc
9.1E-01
1.3E+00
1.2E+00
l.OE+00
1.2E+00
1.2E+00
1.1E+00
8.6E-01
1.3E+00
1.9E+00
nc
nc
AWQC chronic
1.8E-01
1.7E-01
2.0E-01
2.4E-01
2.2E-01
nc
2.5E-01
2.0E-01
1.6E-01
nc
nc
1.3E-01
1.7E-01
1.6E-01
1.6E-01
2.2E-01
1.6E-01
1.3E-01
1.4E-01
2.0E-01
1.7E-01
1.6E-01
1.6E-01
1.7E-01
nc
1.4E-01
nc
1.7E-01
1.5E-01
1.6E-01
2.2E-01
2.0E-01
nc
1.4E-01
1.8E-01
1.7E-01
1.5E-01
1.7E-01
1.7E-01
1.6E-01
1.3E-01
1.8E-01
2.4E-01
nc
nc
HQ acute
4E-02
4E-02
3E-02
3E-02
3E-02
nc
2E-02
3E-02
4E-02
nc
nc
6E-02
4E-02
5E-02
4E-02
3E-02
5E-02
6E-02
6E-02
3E-02
2E-01
5E-02
5E-02
4E-02
nc
6E-02
nc
9E-02
5E-02
5E-02
1E-01
2E-01
nc
6E-02
2E-01
4E-02
5E-02
2E-01
8E-02
2E-01
3E-01
8E-02
1E-01
nc
nc
HQ chronic
3E-01
3E-01
3E-01
2E-01
2E-01
nc
2E-01
2E-01
3E-01
nc
nc
4E-01
3E-01
3E-01
3E-01
2E-01
3E-01
4E-01
4E-01
3E-01
2E+00
3E-01
3E-01
3E-01
nc
4E-01
nc
6E-01
3E-01
3E-01
9E-01
1E+00
nc
4E-01
2E+00
3E-01
3E-01
1E+00
6E-01
2E+00
2E+00
6E-01
8E-01
nc
nc
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 9 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-Adams St
BR-Adams St
643
643
643
643
643
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
Sample Date
19-Aug-99
14-Jul-99
17-Nov-99
17-Nov-99
04-May-89
21-Sep-89
16-Nov-93
03-Nov-98
07-Oct-99
23-Sep-98
23-Sep-99
22-Sep-92
23-Sep-99
21-Oct-93
Ol-Nov-99
24-Oct-95
21-May-96
28-Dec-99
09-Sep-98
21-Aug-98
22-Jul-98
07-Aug-98
08-May-97
Ol-Jul-98
05-May-98
09-Sep-98
24-Apr-97
18-Jun-97
23-Sep-98
04-Jun-97
22-Jul-98
07-Aug-98
10-Sep-97
16-May-97
21-Aug-98
21-May-97
24-Sep-97
02-Sep-97
07-Dec-97
21-Aug-97
16-Jul-97
10-Oct-97
02-Jul-97
Ol-Apr-98
19-Nov-97
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ND Adj Cone
0.1
0.1
0.05
0.1
0.3
0.15
0.25
0.2
0.1
0.2
0.1
0.25
0.1
0.25
0.1
0.5
0.5
0.66
0.67
0.64
0.75
0.05
2.35
1.91
3.65
2.43
4.12
1.36
3.41
1.89
2.39
1.15
2.25
1.83
1.95
1.87
2.27
1.13
6.66
0.99
0.77
2.68
0.99
5.29
5.94
Hardness (mg/L)
61
-
69
70
67
58
67
-
71
-
72
66
71
71
71
68
57
-
-
-
—
-
106
-
120
90
124
58
94
60
78
-
76
80
-
68
76
64
136
42
—
100
44
164
128
AWQC acute
1.2E+00
nc
1.4E+00
1.4E+00
1.4E+00
1.2E+00
1.4E+00
nc
1.4E+00
nc
1.5E+00
1.3E+00
1.4E+00
1.4E+00
1.4E+00
1.4E+00
1.2E+00
nc
nc
nc
nc
nc
2.1E+00
nc
2.4E+00
1.8E+00
2.5E+00
1.2E+00
1.9E+00
1.2E+00
1.6E+00
nc
1.5E+00
1.6E+00
nc
1.4E+00
1.5E+00
1.3E+00
2.7E+00
8.7E-01
nc
2.0E+00
9.1E-01
3.3E+00
2.6E+00
AWQC chronic
1.7E-01
nc
1.9E-01
1.9E-01
1.9E-01
1.7E-01
1.9E-01
nc
1.9E-01
nc
2.0E-01
1.8E-01
1.9E-01
1.9E-01
1.9E-01
1.9E-01
1.7E-01
nc
nc
nc
nc
nc
2.6E-01
nc
2.8E-01
2.3E-01
2.9E-01
1.7E-01
2.4E-01
1.7E-01
2.1E-01
nc
2.0E-01
2.1E-01
nc
1.9E-01
2.0E-01
1.8E-01
3.0E-01
1.3E-01
nc
2.5E-01
1.4E-01
3.5E-01
2.9E-01
HQ acute
8E-02
nc
4E-02
7E-02
2E-01
1E-01
2E-01
nc
7E-02
nc
7E-02
2E-01
7E-02
2E-01
7E-02
4E-01
4E-01
nc
nc
nc
nc
nc
1E+00
nc
2E+00
1E+00
2E+00
1E+00
2E+00
2E+00
2E+00
nc
1E+00
1E+00
nc
1E+00
1E+00
9E-01
2E+00
1E+00
nc
1E+00
1E+00
2E+00
2E+00
HQ chronic
6E-01
nc
3E-01
5E-01
2E+00
9E-01
1E+00
nc
5E-01
nc
5E-01
1E+00
5E-01
1E+00
5E-01
3E+00
3E+00
nc
nc
nc
nc
nc
9E+00
nc
1E+01
1E+01
1E+01
8E+00
1E+01
1E+01
1E+01
nc
1E+01
9E+00
nc
1E+01
1E+01
6E+00
2E+01
7E+00
nc
1E+01
7E+00
2E+01
2E+01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 10 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
Sample Date
04-Jun-97
22-Jul-98
07-Aug-98
24-Sep-97
05-May-98
21-Aug-98
02-Sep-97
21-Aug-97
16-Jul-97
18-Jun-97
21-May-97
16-May-97
08-May-97
09-Sep-98
Ol-Jul-98
19-Nov-97
07-Dec-97
Ol-Apr-98
02-Jul-97
24-Apr-97
23-Sep-98
02-Nov-99
17-Nov-99
03-Nov-98
02-Dec-98
03-Mar-99
04-Feb-99
07-Apr-99
23-Sep-99
07-Apr-99
04-May-89
21-Sep-89
22-Aug-94
14-Sep-99
14-Sep-99
05-Sep-99
19-Aug-99
14-Jul-99
10-Jun-99
23-Sep-98
05-May-99
23-Jul-96
10-Jun-96
16-Nov-93
21-Oct-93
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.64
0.58
0.51
0.59
0.66
0.61
0.53
0.53
0.47
0.8
0.77
0.68
0.61
0.56
0.43
0.46
0.44
0.39
0.54
0.6
0.54
5.1
4.1
4.3
4
7.2
7.6
7.2
3.1
7.5
6
4.3
1.7
3.5
3.3
2.8
1.9
0.6
1.4
3.4
8.2
1.1
1.5
6.8
6.7
Hardness (mg/L)
58
-
-
72
76
-
64
52
48
54
64
72
78
-
-
68
68
84
46
88
—
108
103
-
—
-
174
-
93
-
140
108
76
89
88
81
75
-
-
-
159
49
58
126
121
AWQC acute
1.2E+00
nc
nc
1.5E+00
1.5E+00
nc
1.3E+00
1.1E+00
9.9E-01
1.1E+00
1.3E+00
1.5E+00
1.6E+00
nc
nc
1.4E+00
1.4E+00
1.7E+00
9.5E-01
1.8E+00
nc
2.2E+00
2.1E+00
nc
nc
nc
3.4E+00
nc
1.9E+00
nc
2.8E+00
2.2E+00
1.5E+00
1.8E+00
1.8E+00
1.6E+00
1.5E+00
nc
nc
nc
3.2E+00
l.OE+00
1.2E+00
2.5E+00
2.4E+00
AWQC chronic
1.7E-01
nc
nc
2.0E-01
2.0E-01
nc
1.8E-01
1.6E-01
1.5E-01
1.6E-01
1.8E-01
2.0E-01
2.1E-01
nc
nc
1.9E-01
1.9E-01
2.2E-01
1.4E-01
2.3E-01
nc
2.6E-01
2.5E-01
nc
nc
nc
3.6E-01
nc
2.3E-01
nc
3.1E-01
2.6E-01
2.0E-01
2.3E-01
2.3E-01
2.1E-01
2.0E-01
nc
nc
nc
3.4E-01
1.5E-01
1.7E-01
2.9E-01
2.8E-01
HQ acute
5E-01
nc
nc
4E-01
4E-01
nc
4E-01
5E-01
5E-01
7E-01
6E-01
5E-01
4E-01
nc
nc
3E-01
3E-01
2E-01
6E-01
3E-01
nc
2E+00
2E+00
nc
nc
nc
2E+00
nc
2E+00
nc
2E+00
2E+00
1E+00
2E+00
2E+00
2E+00
1E+00
nc
nc
nc
3E+00
1E+00
1E+00
3E+00
3E+00
HQ chronic
4E+00
nc
nc
3E+00
3E+00
nc
3E+00
3E+00
3E+00
5E+00
4E+00
3E+00
3E+00
nc
nc
2E+00
2E+00
2E+00
4E+00
3E+00
nc
2E+01
2E+01
nc
nc
nc
2E+01
nc
1E+01
nc
2E+01
2E+01
8E+00
2E+01
1E+01
1E+01
9E+00
nc
nc
nc
2E+01
7E+00
9E+00
2E+01
2E+01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 11 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Cadmium
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
Station ID
BR-2
BR-2
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-4
BR-5
BR-5
BR-5
BR-BFG
BR-BFG
BR-Dillon
BR-Dillon
FG-4
FG-4
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
Sample Date
22-Sep-92
07-Oct-99
04-Feb-99
03-Mar-99
07-Apr-99
21-Sep-89
04-May-89
05-May-99
10-Jun-99
14-Jul-99
19-Aug-99
05-Sep-99
14-Sep-99
02-Dec-98
03-Nov-98
23-Sep-98
22-Aug-94
16-Nov-93
10-Jun-96
23-Jul-96
21-Oct-93
23-Sep-99
07-Oct-99
Ol-Nov-99
17-Nov-99
07-Oct-99
22-Sep-92
22-Sep-92
23-Jul-96
23-Jul-96
22-May-96
25-Oct-95
26-Oct-95
24-May-96
22-Sep-92
21-Sep-89
04-May-89
ll-Jun-96
16-Nov-93
22-Sep-92
21-Oct-93
05-Sep-99
13-Sep-99
19-Aug-99
23-Sep-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
5.1
3
0.6
0.2
0.5
0.4
0.4
0.6
0.6
0.5
0.7
0.6
0.4
1.5
0.5
0.7
0.5
0.25
0.9
0.5
0.25
0.8
0.7
0.5
0.5
0.8
0.25
0.25
0.25
0.7
2
4
0.5
0.5
0.5
2.5
2.5
1.8
0.5
0.5
0.5
0.5
0.5
1.1
0.5
Hardness (mg/L)
102
91
85
-
—
68
80
89
—
-
65
63
69
-
-
-
70
75
54
50
76
72
60
74
70
73
73
72
52
52
59
86
66
47
61
58
84
37
65
62
66
52
60
54
64
AWQC acute
2.1E+00
1.8E+00
1.7E+00
nc
nc
1.4E+00
1.6E+00
1.8E+00
nc
nc
1.3E+00
1.3E+00
1.4E+00
nc
nc
nc
1.4E+00
1.5E+00
1.1E+00
l.OE+00
1.5E+00
1.5E+00
1.2E+00
1.5E+00
1.4E+00
1.5E+00
1.5E+00
1.5E+00
1.1E+00
1.1E+00
1.2E+00
1.7E+00
1.3E+00
9.7E-01
8.4E+00
8.0E+00
1.1E+01
5.3E+00
9.0E+00
8.6E+00
9.1E+00
7.3E+00
8.3E+00
7.5E+00
8.8E+00
AWQC chronic
2.5E-01
2.3E-01
2.2E-01
nc
nc
1.9E-01
2.1E-01
2.3E-01
nc
nc
1.8E-01
1.8E-01
1.9E-01
nc
nc
nc
1.9E-01
2.0E-01
1.6E-01
1.5E-01
2.0E-01
2.0E-01
1.7E-01
2.0E-01
1.9E-01
2.0E-01
2.0E-01
2.0E-01
1.6E-01
1.6E-01
1.7E-01
2.2E-01
1.8E-01
1.5E-01
5.8E+00
5.6E+00
7.7E+00
3.9E+00
6.2E+00
6.0E+00
6.3E+00
5.1E+00
5.8E+00
5.3E+00
6.1E+00
HQ acute
2E+00
2E+00
3E-01
nc
nc
3E-01
2E-01
3E-01
nc
nc
5E-01
5E-01
3E-01
nc
nc
nc
4E-01
2E-01
8E-01
5E-01
2E-01
5E-01
6E-01
3E-01
4E-01
5E-01
2E-01
2E-01
2E-01
7E-01
2E+00
2E+00
4E-01
5E-01
6E-02
3E-01
2E-01
3E-01
6E-02
6E-02
6E-02
7E-02
6E-02
1E-01
6E-02
HQ chronic
2E+01
1E+01
3E+00
nc
nc
2E+00
2E+00
3E+00
nc
nc
4E+00
3E+00
2E+00
nc
nc
nc
3E+00
1E+00
6E+00
3E+00
1E+00
4E+00
4E+00
3E+00
3E+00
4E+00
1E+00
1E+00
2E+00
5E+00
1E+01
2E+01
3E+00
3E+00
9E-02
4E-01
3E-01
5E-01
8E-02
8E-02
8E-02
1E-01
9E-02
2E-01
8E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 12 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
General Location
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
FG-5
FG-5
FG-5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
1121
1121
1140
FG-6
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6B
FG-6B
FG-6C
FG-6C
Sample Date
08-Oct-99
23-Aug-94
22-Jul-96
23-Sep-99
07-Oct-99
19-Aug-99
05-Sep-99
13-Sep-99
05-Sep-99
13-Sep-99
23-Sep-99
07-Oct-99
Ol-Nov-99
17-Nov-99
17-Nov-99
23-Sep-99
08-Oct-99
14-Sep-99
02-Nov-99
21-Oct-93
19-Aug-99
22-Sep-92
23-Aug-94
22-Jul-96
16-Nov-93
ll-Jun-96
21-Sep-89
04-May-89
05-Sep-99
13-Jun-96
23-Jul-96
13-Jun-96
ll-Jun-96
22-Jul-96
23-Aug-94
22-Sep-92
21-Sep-89
04-May-89
ll-Jun-96
21-Oct-93
16-Nov-93
22-Jul-96
23-Aug-94
21-Jun-OO
ll-Jun-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.5
0.5
0.4
1
1
2
2
2
2
2
1
1
1
0.7
1.1
0.5
3
0.5
2
0.5
1.8
0.5
1.1
0.4
0.5
1.6
2.5
2.5
10
5
15
40.1
193
2.3
0.5
0.5
2.5
11
20.5
6
3
4.2
0.5
5
6.7
Hardness (mg/L)
63
54
46
75
76
65
64
71
64
71
75
76
82
84
89
76
73
71
86
109
66
95
97
64
109
55
92
97
66
215
446
728
1070
908
699
440
656
580
722
679
625
1230
1362
-
2020
AWQC acute
8.7E+00
7.5E+00
6.5E+00
l.OE+01
l.OE+01
9.0E+00
8.8E+00
9.7E+00
8.8E+00
9.7E+00
l.OE+01
l.OE+01
1.1E+01
1.1E+01
1.2E+01
l.OE+01
l.OE+01
9.7E+00
1.2E+01
1.5E+01
9.1E+00
1.3E+01
1.3E+01
8.8E+00
1.5E+01
7.7E+00
1.2E+01
1.3E+01
9.1E+00
2.8E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
nc
5.0E+01
AWQC chronic
6.0E+00
5.3E+00
4.6E+00
7.0E+00
7.1E+00
6.2E+00
6.1E+00
6.7E+00
6.1E+00
6.7E+00
7.0E+00
7.1E+00
7.6E+00
7.7E+00
8.1E+00
7.1E+00
6.8E+00
6.7E+00
7.9E+00
9.7E+00
6.3E+00
8.5E+00
8.7E+00
6.1E+00
9.7E+00
5.4E+00
8.3E+00
8.7E+00
6.3E+00
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
nc
1.7E+01
HQ acute
6E-02
7E-02
6E-02
1E-01
1E-01
2E-01
2E-01
2E-01
2E-01
2E-01
1E-01
1E-01
9E-02
6E-02
9E-02
5E-02
3E-01
5E-02
2E-01
3E-02
2E-01
4E-02
8E-02
5E-02
3E-02
2E-01
2E-01
2E-01
1E+00
2E-01
3E-01
8E-01
4E+00
5E-02
1E-02
1E-02
5E-02
2E-01
4E-01
1E-01
6E-02
8E-02
1E-02
nc
1E-01
HQ chronic
8E-02
9E-02
9E-02
1E-01
1E-01
3E-01
3E-01
3E-01
3E-01
3E-01
1E-01
1E-01
1E-01
9E-02
1E-01
7E-02
4E-01
7E-02
3E-01
5E-02
3E-01
6E-02
1E-01
7E-02
5E-02
3E-01
3E-01
3E-01
2E+00
3E-01
9E-01
2E+00
1E+01
1E-01
3E-02
3E-02
1E-01
6E-01
1E+00
4E-01
2E-01
2E-01
3E-02
nc
4E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 13 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
General Location
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
Station ID
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
TS-3
TS-4
TS-4
FG-0
FG-0
FG-0
FG-1
FG-1
FG-1
FG-1
FG-1
FG-1
FG-2
FG-2
FG-2
FG-3
FG-3
FG-3
Sample Date
05-Sep-99
13-Sep-99
23-Sep-99
07-Oct-99
19-Aug-99
05-Sep-99
05-Sep-99
22-Jul-96
17-Nov-99
02-Nov-99
04-May-89
22-Sep-92
05-Sep-99
07-Oct-99
23-Sep-99
14-Sep-99
22-Jul-96
25-May-96
23-Aug-94
19-Aug-99
16-Nov-93
ll-Jun-96
Ol-Nov-99
05-Jun-96
17-Nov-99
05-Jun-96
21-Oct-93
23-May-96
25-May-96
06-Jun-96
22-Sep-92
23-May-96
21-Sep-89
23-May-96
25-Oct-95
04-May-89
22-Sep-92
22-Jul-96
12-Jun-96
21-Sep-89
04-May-89
22-Sep-92
22-Jul-96
12-Jun-96
22-Sep-92
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
45
66.8
31.6
93.1
32.6
44
44
8
21.9
76
2.5
0.5
6
9
6.2
7
0.4
3
0.5
4.1
0.5
2.3
9
3
4.6
2
0.5
0.5
3
2
0.5
1
2.5
0.5
0.5
2.5
0.5
1.5
1.4
2.5
2.5
0.5
0.4
0.9
0.5
Hardness (mg/L)
882
839
1010
957
659
882
882
1720
972
996
200
102
184
182
201
189
96
-
93
196
120
68
203
58
201
58
123
46
47
53
47
34
58
34
48
69
53
41
37
60
67
55
46
39
62
AWQC acute
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
5.0E+01
2.6E+01
1.4E+01
2.4E+01
2.4E+01
2.6E+01
2.4E+01
1.3E+01
nc
1.3E+01
2.5E+01
1.6E+01
9.3E+00
2.6E+01
8.0E+00
2.6E+01
8.0E+00
1.6E+01
6.5E+00
6.6E+00
7.4E+00
6.6E+00
4.9E+00
8.0E+00
4.9E+00
6.7E+00
9.5E+00
7.4E+00
5.7E+00
5.3E+00
8.3E+00
9.2E+00
7.6E+00
6.5E+00
5.5E+00
8.5E+00
AWQC chronic
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.7E+01
1.6E+01
9.1E+00
1.5E+01
1.5E+01
1.6E+01
1.5E+01
8.7E+00
nc
8.4E+00
1.6E+01
l.OE+01
6.4E+00
1.6E+01
5.6E+00
1.6E+01
5.6E+00
1.1E+01
4.6E+00
4.7E+00
5.2E+00
4.7E+00
3.6E+00
5.6E+00
3.6E+00
4.8E+00
6.5E+00
5.2E+00
4.1E+00
3.8E+00
5.8E+00
6.4E+00
5.3E+00
4.6E+00
4.0E+00
5.9E+00
HQ acute
9E-01
1E+00
6E-01
2E+00
7E-01
9E-01
9E-01
2E-01
4E-01
2E+00
1E-01
4E-02
3E-01
4E-01
2E-01
3E-01
3E-02
nc
4E-02
2E-01
3E-02
2E-01
3E-01
4E-01
2E-01
2E-01
3E-02
8E-02
5E-01
3E-01
8E-02
2E-01
3E-01
1E-01
7E-02
3E-01
7E-02
3E-01
3E-01
3E-01
3E-01
7E-02
6E-02
2E-01
6E-02
HQ chronic
3E+00
4E+00
2E+00
5E+00
2E+00
3E+00
3E+00
5E-01
1E+00
4E+00
2E-01
6E-02
4E-01
6E-01
4E-01
5E-01
5E-02
nc
6E-02
3E-01
5E-02
4E-01
5E-01
5E-01
3E-01
4E-01
5E-02
1E-01
6E-01
4E-01
1E-01
3E-01
4E-01
1E-01
1E-01
4E-01
1E-01
4E-01
4E-01
4E-01
4E-01
9E-02
9E-02
2E-01
8E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 14 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
General Location
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Discharge
Discharge
Discharge
Discharge
Discharge
Discharge
Station ID
FG-10
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-9A
FG-9A
CBMA-1
KDS
KDS
MGB-1
RLCVT-1
WP-1
Sample Date
02-Nov-99
21-Jun-OO
02-Nov-99
17-Nov-99
08-Oct-99
05-Sep-99
19-Aug-99
23-Sep-99
13-Sep-99
23-Oct-95
09-Sep-96
08-Oct-96
17-Apr-96
18-Jul-96
16-May-96
21-Sep-89
04-May-89
26-May-96
15-Aug-96
19-Jan-96
21-Nov-95
25-Jun-96
21-Jun-96
21-Mar-96
22-Feb-96
21-Feb-97
16-Jan-97
13-Dec-96
13-Nov-96
22-May-96
22-Jul-96
23-Aug-94
16-Nov-93
10-Jun-96
21-Oct-93
22-Sep-92
22-Jul-96
ll-Jun-96
23-Aug-94
23-Jul-96
24-Aug-94
13-Jun-96
23-Jul-96
23-Jul-96
12-Jun-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
2
5
3
1.7
2
2
3.5
2
2
1
1
0.5
3
13
5
2.5
2.5
3
1
3
3
2
2
2
2
0.5
0.5
0.5
0.5
3
0.4
1
0.5
2.7
0.5
0.5
0.4
2.1
1.1
0.8
0.5
6.7
0.8
0.8
8393
Hardness (mg/L)
85
-
108
113
95
85
87
102
92
110
110
110
160
18
82
102
140
62
99
150
120
65
62
140
150
160
140
140
120
75
84
102
125
65
121
103
85
65
96
224
222
296
82
86
4980
AWQC acute
1.2E+01
nc
1.4E+01
1.5E+01
1.3E+01
1.2E+01
1.2E+01
1.4E+01
1.2E+01
1.5E+01
1.5E+01
1.5E+01
2.1E+01
2.7E+00
1.1E+01
1.4E+01
1.8E+01
8.6E+00
1.3E+01
2.0E+01
1.6E+01
9.0E+00
8.6E+00
1.8E+01
2.0E+01
2.1E+01
1.8E+01
1.8E+01
1.6E+01
l.OE+01
1.1E+01
1.4E+01
1.7E+01
9.0E+00
1.6E+01
1.4E+01
1.1E+01
9.0E+00
1.3E+01
2.9E+01
2.8E+01
3.7E+01
1.1E+01
1.2E+01
5.0E+01
AWQC chronic
7.8E+00
nc
9.6E+00
9.9E+00
8.6E+00
7.8E+00
8.0E+00
9.1E+00
8.3E+00
9.7E+00
9.7E+00
9.7E+00
1.3E+01
2.1E+00
7.6E+00
9.1E+00
1.2E+01
6.0E+00
8.9E+00
1.3E+01
l.OE+01
6.2E+00
6.0E+00
1.2E+01
1.3E+01
1.3E+01
1.2E+01
1.2E+01
l.OE+01
7.0E+00
7.7E+00
9.1E+00
1.1E+01
6.2E+00
1.1E+01
9.2E+00
7.8E+00
6.2E+00
8.6E+00
1.7E+01
1.7E+01
1.7E+01
7.6E+00
7.9E+00
1.7E+01
HQ acute
2E-01
nc
2E-01
1E-01
2E-01
2E-01
3E-01
1E-01
2E-01
7E-02
7E-02
3E-02
1E-01
5E+00
4E-01
2E-01
1E-01
4E-01
8E-02
2E-01
2E-01
2E-01
2E-01
1E-01
1E-01
2E-02
3E-02
3E-02
3E-02
3E-01
4E-02
7E-02
3E-02
3E-01
3E-02
4E-02
3E-02
2E-01
9E-02
3E-02
2E-02
2E-01
7E-02
7E-02
2E+02
HQ chronic
3E-01
nc
3E-01
2E-01
2E-01
3E-01
4E-01
2E-01
2E-01
1E-01
1E-01
5E-02
2E-01
6E+00
7E-01
3E-01
2E-01
5E-01
1E-01
2E-01
3E-01
3E-01
3E-01
2E-01
2E-01
4E-02
4E-02
4E-02
5E-02
4E-01
5E-02
1E-01
5E-02
4E-01
5E-02
5E-02
5E-02
3E-01
1E-01
5E-02
3E-02
4E-01
1E-01
1E-01
5E+02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 15 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Station ID
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
Sample Date
24-Apr-97
02-Sep-97
09-Sep-98
21-May-97
16-May-97
22-Jul-98
23-Sep-98
Ol-Jul-98
21-Aug-98
24-Sep-97
21-Aug-97
16-Jul-97
02-Jul-97
18-Jun-97
08-May-97
07-Aug-98
05-May-98
19-Nov-97
10-Oct-97
Ol-Apr-98
07-Dec-97
22-Jul-98
16-May-97
24-Sep-97
16-Jul-97
02-Jul-97
18-Jun-97
Ol-Jul-98
05-May-98
07-Dec-97
10-Oct-97
07-Aug-98
21-May-97
08-May-97
09-Sep-98
04-Jun-97
24-Apr-97
23-Sep-98
21-Aug-98
21-Sep-89
Ol-Nov-99
04-May-89
17-Nov-99
17-Nov-99
23-Sep-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
5.7
16.4
0.5
1.2
4.2
0.5
0.5
0.5
1.2
0.5
13.2
3.5
10.2
18.5
2.8
0.5
0.5
0.5
1.4
0.5
0.5
1.6
10.9
0.5
16.5
5.7
8.6
0.5
0.5
1.1
2.8
1.9
9.3
2.5
0.5
16
2.5
1.3
1.2
2.5
0.5
7
0.6
0.8
0.5
Hardness (mg/L)
86
56
-
66
72
-
-
-
—
56
52
60
40
60
78
-
76
96
72
100
84
58
62
52
44
42
52
-
72
-
60
48
60
74
-
54
84
60
50
58
71
67
69
70
71
AWQC acute
1.2E+01
7.8E+00
nc
9.1E+00
9.9E+00
nc
nc
nc
nc
7.8E+00
7.3E+00
8.3E+00
5.7E+00
8.3E+00
1.1E+01
nc
l.OE+01
1.3E+01
9.9E+00
1.3E+01
1.1E+01
8.0E+00
8.6E+00
7.3E+00
6.2E+00
5.9E+00
7.3E+00
nc
9.9E+00
nc
8.3E+00
6.7E+00
8.3E+00
l.OE+01
nc
7.5E+00
1.1E+01
8.3E+00
7.0E+00
8.0E+00
9.7E+00
9.2E+00
9.5E+00
9.6E+00
9.7E+00
AWQC chronic
7.9E+00
5.5E+00
nc
6.3E+00
6.8E+00
nc
nc
nc
nc
5.5E+00
5.1E+00
5.8E+00
4.1E+00
5.8E+00
7.2E+00
nc
7.1E+00
8.6E+00
6.8E+00
9.0E+00
7.7E+00
5.6E+00
6.0E+00
5.1E+00
4.4E+00
4.3E+00
5.1E+00
nc
6.8E+00
nc
5.8E+00
4.8E+00
5.8E+00
6.9E+00
nc
5.3E+00
7.7E+00
5.8E+00
5.0E+00
5.6E+00
6.7E+00
6.4E+00
6.5E+00
6.6E+00
6.7E+00
HQ acute
5E-01
2E+00
nc
1E-01
4E-01
nc
nc
nc
nc
6E-02
2E+00
4E-01
2E+00
2E+00
3E-01
nc
5E-02
4E-02
1E-01
4E-02
4E-02
2E-01
1E+00
7E-02
3E+00
1E+00
1E+00
nc
5E-02
nc
3E-01
3E-01
1E+00
2E-01
nc
2E+00
2E-01
2E-01
2E-01
3E-01
5E-02
8E-01
6E-02
8E-02
5E-02
HQ chronic
7E-01
3E+00
nc
2E-01
6E-01
nc
nc
nc
nc
9E-02
3E+00
6E-01
2E+00
3E+00
4E-01
nc
7E-02
6E-02
2E-01
6E-02
6E-02
3E-01
2E+00
1E-01
4E+00
1E+00
2E+00
nc
7E-02
nc
5E-01
4E-01
2E+00
4E-01
nc
3E+00
3E-01
2E-01
2E-01
4E-01
7E-02
1E+00
9E-02
1E-01
7E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 16 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-Adams St
BR-Adams St
643
643
643
643
643
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
657
657
657
657
657
657
657
657
Sample Date
23-Jul-96
21-Oct-93
22-Sep-92
14-Sep-99
23-Aug-94
05-Sep-99
16-Nov-93
19-Aug-99
10-Jun-96
07-Oct-99
23-Sep-99
24-Oct-95
21-May-96
21-Aug-98
28-Dec-99
09-Sep-98
07-Aug-98
22-Jul-98
10-Oct-97
07-Dec-97
19-Nov-97
08-May-97
02-Sep-97
02-Jul-97
18-Jun-97
24-Sep-97
04-Jun-97
16-May-97
23-Sep-98
21-May-97
09-Sep-98
Ol-Apr-98
05-May-98
Ol-Jul-98
07-Aug-98
21-Aug-98
22-Jul-98
02-Jul-97
18-Jun-97
24-Sep-97
09-Sep-98
04-Jun-97
21-Aug-98
02-Sep-97
21-Aug-97
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ND Adj Cone
0.4
0.5
0.5
0.5
2.1
0.5
0.5
1.7
1.3
0.5
0.5
0.5
2
1.2
1
0.5
1.6
2.3
0.5
1.1
2.3
2.6
27.4
8.4
8.3
0.5
10.8
2.7
1
2.6
0.5
1.5
0.5
0.5
1.1
1.8
3.1
7.2
9.3
1.2
0.5
8.4
1.2
7.7
5.9
Hardness (mg/L)
42
71
66
63
61
60
67
61
54
71
72
68
57
-
-
-
—
-
100
136
128
106
64
44
58
76
60
80
94
68
90
164
120
-
-
-
78
46
54
72
—
58
-
64
52
AWQC acute
5.9E+00
9.7E+00
9.0E+00
8.7E+00
8.5E+00
8.3E+00
9.2E+00
8.4E+00
7.5E+00
9.7E+00
9.9E+00
9.3E+00
7.9E+00
nc
nc
nc
nc
nc
1.3E+01
1.8E+01
1.7E+01
1.4E+01
8.8E+00
6.2E+00
8.0E+00
l.OE+01
8.3E+00
1.1E+01
1.3E+01
9.3E+00
1.2E+01
2.1E+01
1.6E+01
nc
nc
nc
1.1E+01
6.5E+00
7.5E+00
9.9E+00
nc
8.0E+00
nc
8.8E+00
7.3E+00
AWQC chronic
4.2E+00
6.6E+00
6.3E+00
6.0E+00
5.9E+00
5.8E+00
6.4E+00
5.9E+00
5.3E+00
6.7E+00
6.8E+00
6.4E+00
5.5E+00
nc
nc
nc
nc
nc
9.0E+00
1.2E+01
1.1E+01
9.4E+00
6.1E+00
4.4E+00
5.6E+00
7.1E+00
5.8E+00
7.4E+00
8.5E+00
6.4E+00
8.2E+00
1.4E+01
l.OE+01
nc
nc
nc
7.2E+00
4.6E+00
5.3E+00
6.8E+00
nc
5.6E+00
nc
6.1E+00
5.1E+00
HQ acute
7E-02
5E-02
6E-02
6E-02
2E-01
6E-02
5E-02
2E-01
2E-01
5E-02
5E-02
5E-02
3E-01
nc
nc
nc
nc
nc
4E-02
6E-02
1E-01
2E-01
3E+00
1E+00
1E+00
5E-02
1E+00
2E-01
8E-02
3E-01
4E-02
7E-02
3E-02
nc
nc
nc
3E-01
1E+00
1E+00
1E-01
nc
1E+00
nc
9E-01
8E-01
HQ chronic
9E-02
8E-02
8E-02
8E-02
4E-01
9E-02
8E-02
3E-01
2E-01
7E-02
7E-02
8E-02
4E-01
nc
nc
nc
nc
nc
6E-02
9E-02
2E-01
3E-01
4E+00
2E+00
1E+00
7E-02
2E+00
4E-01
1E-01
4E-01
6E-02
1E-01
5E-02
nc
nc
nc
4E-01
2E+00
2E+00
2E-01
nc
1E+00
nc
1E+00
1E+00
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 17 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
Copper
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
657
657
657
657
657
657
657
657
657
657
657
657
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-4
BR-5
Sample Date
07-Aug-98
21-May-97
16-May-97
08-May-97
24-Apr-97
23-Sep-98
19-Nov-97
07-Dec-97
Ol-Apr-98
05-May-98
Ol-Jul-98
22-Jul-98
22-Sep-92
07-Oct-99
17-Nov-99
02-Nov-99
04-May-89
21-Sep-89
23-Sep-99
22-Aug-94
23-Jul-96
10-Jun-96
16-Nov-93
21-Oct-93
14-Sep-99
14-Sep-99
05-Sep-99
19-Aug-99
04-May-89
21-Sep-89
23-Sep-99
22-Aug-94
14-Sep-99
Ol-Nov-99
10-Jun-96
23-Jul-96
17-Nov-99
16-Nov-93
07-Oct-99
21-Oct-93
07-Oct-99
19-Aug-99
05-Sep-99
22-Sep-92
23-Jul-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.5
1.7
9.5
2.7
2.8
0.5
1.3
0.5
2
3.5
1.4
1.6
0.5
2
1.4
3
2.5
2.5
2
0.5
0.4
1.8
0.5
1
2
2
1
1.9
2.5
2.5
0.5
1.4
0.5
1
2.4
0.4
1
0.5
1
0.5
0.5
1
1
0.5
0.4
Hardness (mg/L)
—
64
72
78
88
-
68
68
84
76
-
-
102
91
103
108
140
108
93
76
49
58
126
121
89
88
81
75
80
68
72
70
69
74
54
50
70
75
60
76
73
65
63
73
52
AWQC acute
nc
8.8E+00
9.9E+00
1.1E+01
1.2E+01
nc
9.3E+00
9.3E+00
1.1E+01
l.OE+01
nc
nc
1.4E+01
1.2E+01
1.4E+01
1.4E+01
1.8E+01
1.4E+01
1.3E+01
l.OE+01
6.8E+00
8.0E+00
1.7E+01
1.6E+01
1.2E+01
1.2E+01
1.1E+01
l.OE+01
1.1E+01
9.3E+00
9.9E+00
9.5E+00
9.5E+00
l.OE+01
7.5E+00
7.0E+00
9.6E+00
l.OE+01
8.3E+00
l.OE+01
l.OE+01
9.0E+00
8.7E+00
l.OE+01
7.3E+00
AWQC chronic
nc
6.1E+00
6.8E+00
7.2E+00
8.0E+00
nc
6.4E+00
6.4E+00
7.7E+00
7.1E+00
nc
nc
9.1E+00
8.3E+00
9.2E+00
9.6E+00
1.2E+01
9.6E+00
8.4E+00
7.1E+00
4.9E+00
5.6E+00
1.1E+01
1.1E+01
8.1E+00
8.0E+00
7.5E+00
7.0E+00
7.4E+00
6.4E+00
6.8E+00
6.6E+00
6.5E+00
6.9E+00
5.3E+00
5.0E+00
6.6E+00
7.0E+00
5.8E+00
7.1E+00
6.8E+00
6.2E+00
6.0E+00
6.8E+00
5.1E+00
HQ acute
nc
2E-01
1E+00
3E-01
2E-01
nc
1E-01
5E-02
2E-01
3E-01
nc
nc
4E-02
2E-01
1E-01
2E-01
1E-01
2E-01
2E-01
5E-02
6E-02
2E-01
3E-02
6E-02
2E-01
2E-01
9E-02
2E-01
2E-01
3E-01
5E-02
1E-01
5E-02
1E-01
3E-01
6E-02
1E-01
5E-02
1E-01
5E-02
5E-02
1E-01
1E-01
5E-02
5E-02
HQ chronic
nc
3E-01
1E+00
4E-01
3E-01
nc
2E-01
8E-02
3E-01
5E-01
nc
nc
5E-02
2E-01
2E-01
3E-01
2E-01
3E-01
2E-01
7E-02
8E-02
3E-01
5E-02
9E-02
2E-01
2E-01
1E-01
3E-01
3E-01
4E-01
7E-02
2E-01
8E-02
1E-01
5E-01
8E-02
2E-01
7E-02
2E-01
7E-02
7E-02
2E-01
2E-01
7E-02
8E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 18 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Copper
Copper
Copper
Copper
Copper
Copper
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
Station ID
BR-5
BR-5
BR-BFG
BR-BFG
BR-Dillon
BR-Dillon
FG-4
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
Sample Date
23-Jul-96
22-Sep-92
22-May-96
25-Oct-95
26-Oct-95
24-May-96
22-Sep-92
19-Aug-99
05-Sep-99
13-Sep-99
16-Nov-93
22-Jul-96
ll-Jun-96
21-Oct-93
22-Sep-92
23-Aug-94
22-Sep-98
03-Nov-98
10-Jun-99
23-Sep-99
08-Oct-99
14-Jul-99
Ol-Nov-99
17-Nov-99
19-Aug-99
05-Sep-99
23-Sep-99
07-Oct-99
13-Sep-99
23-Sep-99
07-Oct-99
05-Sep-99
13-Sep-99
ll-Jun-96
22-Jul-96
21-Oct-93
22-Sep-92
16-Nov-93
10-Jun-99
19-Aug-99
14-Jul-99
17-Nov-99
02-Nov-99
23-Sep-99
14-Sep-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.4
0.5
2
0.5
0.5
2
13
5
5
80
37
18.1
19.1
15
5
17
10
20
10
5
20
20
5
30
5
5
5
20
30
5
20
5
30
50.8
5.6
21
30
2.5
40
5
5
5
5
10
5
Hardness (mg/L)
52
72
59
86
66
47
61
54
52
60
65
46
37
66
62
54
—
-
-
64
63
-
82
84
65
64
75
76
71
75
76
64
71
55
64
109
95
109
-
66
—
89
86
76
71
AWQC acute
7.2E+00
9.8E+00
8.2E+00
1.2E+01
9.1E+00
6.6E+00
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
AWQC chronic
5.1E+00
6.7E+00
5.7E+00
7.9E+00
6.3E+00
4.7E+00
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
HQ acute
6E-02
5E-02
2E-01
4E-02
6E-02
3E-01
7E-03
3E-03
3E-03
4E-02
2E-02
9E-03
1E-02
8E-03
3E-03
9E-03
5E-03
1E-02
5E-03
3E-03
1E-02
1E-02
3E-03
2E-02
3E-03
3E-03
3E-03
1E-02
2E-02
3E-03
1E-02
3E-03
2E-02
3E-02
3E-03
1E-02
2E-02
1E-03
2E-02
3E-03
3E-03
3E-03
3E-03
5E-03
3E-03
HQ chronic
8E-02
7E-02
4E-01
6E-02
8E-02
4E-01
1E-02
5E-03
5E-03
8E-02
4E-02
2E-02
2E-02
2E-02
5E-03
2E-02
1E-02
2E-02
1E-02
5E-03
2E-02
2E-02
5E-03
3E-02
5E-03
5E-03
5E-03
2E-02
3E-02
5E-03
2E-02
5E-03
3E-02
5E-02
6E-03
2E-02
3E-02
3E-03
4E-02
5E-03
5E-03
5E-03
5E-03
1E-02
5E-03
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 19 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
General Location
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
FG-8
FG-8
FG-8
1121
1121
1140
FG-6
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6B
FG-6B
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
Sample Date
05-Sep-99
08-Oct-99
23-Aug-94
23-Jul-96
13-Jun-96
13-Jun-96
ll-Jun-96
ll-Jun-96
22-Jul-96
21-Oct-93
16-Nov-93
22-Sep-92
23-Aug-94
22-Jul-96
23-Aug-94
10-Jun-99
14-Jul-99
22-Jul-99
19-Aug-99
02-Dec-98
03-Nov-98
22-Sep-98
07-May-99
ll-Jun-96
22-Jul-96
13-Sep-99
17-Nov-99
23-Sep-99
07-Oct-99
02-Nov-99
05-Sep-99
05-Sep-99
05-Sep-99
07-Apr-99
04-Feb-99
13-Apr-OO
21-Jun-OO
03-Mar-99
10-Jun-99
17-Nov-99
10-Jun-99
14-Jul-99
25-May-96
25-May-96
25-May-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
20
10
16
117
519.5
34111.9
155972
73377.2
95411
62570
58400
38540
63998
163200
276000
18700
81300
85700
81200
119000
107000
100000
106000
299948
339140
100000
113000
107810
115690
1 12000
117000
117000
109000
94300
120000
82000
78900
97800
520
70
520
160
120
240
150
Hardness (mg/L)
66
73
97
446
215
728
1070
722
908
679
625
440
699
1230
1362
-
—
742
659
-
—
-
956
2020
1720
839
972
1010
957
996
882
882
882
-
997
-
—
-
-
201
—
-
58
47
62
AWQC acute
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
AWQC chronic
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
HQ acute
1E-02
5E-03
8E-03
6E-02
3E-01
2E+01
8E+01
4E+01
5E+01
3E+01
3E+01
2E+01
3E+01
8E+01
1E+02
9E+00
4E+01
4E+01
4E+01
6E+01
5E+01
5E+01
5E+01
1E+02
2E+02
5E+01
6E+01
5E+01
6E+01
6E+01
6E+01
6E+01
5E+01
5E+01
6E+01
4E+01
4E+01
5E+01
3E-01
4E-02
3E-01
8E-02
6E-02
1E-01
8E-02
HQ chronic
2E-02
1E-02
2E-02
1E-01
5E-01
3E+01
2E+02
7E+01
1E+02
6E+01
6E+01
4E+01
6E+01
2E+02
3E+02
2E+01
8E+01
9E+01
8E+01
1E+02
1E+02
1E+02
1E+02
3E+02
3E+02
1E+02
1E+02
1E+02
1E+02
1E+02
1E+02
1E+02
1E+02
9E+01
1E+02
8E+01
8E+01
1E+02
5E-01
7E-02
5E-01
2E-01
1E-01
2E-01
2E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 20 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
General Location
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Station ID
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
TS-3
TS-4
TS-4
FG-0
FG-0
FG-1
FG-1
FG-1
FG-1
FG-1
FG-2
FG-3
FG-3
FG-3
FG-10
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
Sample Date
14-Sep-99
07-Oct-99
23-Sep-99
19-Aug-99
Ol-Nov-99
05-Sep-99
22-Sep-92
16-Nov-93
21-Oct-93
05-Jun-96
05-Jun-96
22-Jul-96
ll-Jun-96
23-Aug-94
23-May-96
25-May-96
06-Jun-96
23-May-96
22-Sep-92
22-Jul-96
12-Jun-96
22-Sep-92
23-May-96
25-Oct-95
22-Sep-92
22-Sep-92
12-Jun-96
22-Jul-96
02-Nov-99
23-Oct-95
18-Jul-96
21-Oct-93
21-Jun-96
17-Apr-96
13-Dec-96
13-Nov-96
15-Aug-96
25-Jun-96
16-Jan-97
21-Nov-95
21-Feb-97
19-Jan-96
04-Feb-99
03-Mar-99
02-Dec-98
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
180
260
80
130
170
190
27
56
10
240
78
96.8
166
22
10
150
74
10
5
14
193.3
33
12
3
28
14
7.3
2.5
5
13
13
14
28
54
71
12
13
27
15
16
16
19
20
40
20
Hardness (mg/L)
189
182
201
196
203
184
102
120
123
58
58
96
68
93
46
47
53
34
47
41
37
53
34
48
55
62
39
46
85
110
18
121
62
160
140
120
99
65
140
120
160
150
175
-
-
AWQC acute
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
AWQC chronic
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
HQ acute
9E-02
1E-01
4E-02
7E-02
9E-02
1E-01
1E-02
3E-02
5E-03
1E-01
4E-02
5E-02
8E-02
1E-02
5E-03
8E-02
4E-02
5E-03
3E-03
7E-03
1E-01
2E-02
6E-03
2E-03
1E-02
7E-03
4E-03
1E-03
3E-03
7E-03
7E-03
7E-03
1E-02
3E-02
4E-02
6E-03
7E-03
1E-02
8E-03
8E-03
8E-03
1E-02
1E-02
2E-02
1E-02
HQ chronic
2E-01
3E-01
8E-02
1E-01
2E-01
2E-01
3E-02
6E-02
1E-02
2E-01
8E-02
1E-01
2E-01
2E-02
1E-02
2E-01
7E-02
1E-02
5E-03
1E-02
2E-01
3E-02
1E-02
3E-03
3E-02
1E-02
7E-03
3E-03
5E-03
1E-02
1E-02
1E-02
3E-02
5E-02
7E-02
1E-02
1E-02
3E-02
2E-02
2E-02
2E-02
2E-02
2E-02
4E-02
2E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 21 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
General Location
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Discharge
Discharge
Discharge
Discharge
Discharge
Discharge
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Station ID
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-9A
FG-9A
FG-9A
CBMA-1
KDS
KDS
MGB-1
RLCVT-1
WP-1
654
654
654
654
654
654
654
654
Sample Date
03-Nov-98
09-Sep-96
16-May-96
21-Mar-96
26-May-96
22-Feb-96
22-Sep-92
07-Apr-99
08-Oct-96
24-Sep-98
22-May-96
23-Sep-99
22-Jul-96
02-Nov-99
08-Oct-99
10-Jun-99
19-Aug-99
07-May-99
14-Jul-99
23-Aug-94
13-Sep-99
05-Sep-99
17-Nov-99
21-Jun-OO
16-Nov-93
13-Apr-OO
10-Jun-96
22-Jul-96
23-Aug-94
22-Sep-98
ll-Jun-96
23-Jul-96
13-Jun-96
24-Aug-94
23-Jul-96
23-Jul-96
12-Jun-96
16-May-97
23-Sep-98
22-Jul-98
08-May-97
21-May-97
07-Aug-98
10-Sep-97
10-Oct-97
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ND Adj Cone
10
11
370
1.5
4
12
5
20
12
60
91
20
38.2
5
5
50
5
80
5
23
5
20
5
5
2.5
40
83.5
28.6
26
20
135
527
1508
191
5
5
694200
25
25
25
25
25
25
25
25
Hardness (mg/L)
—
110
82
140
62
150
103
-
110
-
75
102
84
108
95
-
87
172
-
102
92
85
113
-
125
-
65
85
96
-
65
224
296
222
82
86
4980
72
-
-
78
66
-
60
72
AWQC acute
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
AWQC chronic
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
HQ acute
5E-03
6E-03
2E-01
8E-04
2E-03
6E-03
3E-03
1E-02
6E-03
3E-02
5E-02
1E-02
2E-02
3E-03
3E-03
3E-02
3E-03
4E-02
3E-03
1E-02
3E-03
1E-02
3E-03
3E-03
1E-03
2E-02
4E-02
1E-02
1E-02
1E-02
7E-02
3E-01
8E-01
1E-01
3E-03
3E-03
3E+02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
HQ chronic
1E-02
1E-02
4E-01
2E-03
4E-03
1E-02
5E-03
2E-02
1E-02
6E-02
9E-02
2E-02
4E-02
5E-03
5E-03
5E-02
5E-03
8E-02
5E-03
2E-02
5E-03
2E-02
5E-03
5E-03
3E-03
4E-02
8E-02
3E-02
3E-02
2E-02
1E-01
5E-01
2E+00
2E-01
5E-03
5E-03
7E+02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 22 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Station ID
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
Sample Date
24-Sep-97
21-Aug-98
19-Nov-97
07-Dec-97
05-May-98
Ol-Apr-98
Ol-Jul-98
09-Sep-98
21-Aug-97
02-Sep-97
02-Jul-97
16-Jul-97
24-Apr-97
04-Jun-97
18-Jun-97
10-Sep-97
07-Dec-97
Ol-Jul-98
05-May-98
02-Sep-97
21-Aug-97
16-Jul-97
02-Jul-97
18-Jun-97
24-Sep-97
10-Oct-97
22-Jul-98
16-May-97
23-Sep-98
04-Jun-97
07-Aug-98
21-May-97
24-Apr-97
09-Sep-98
21-Aug-98
14-Jul-99
10-Jun-96
23-Aug-94
10-Jun-99
05-May-99
19-Aug-99
23-Jul-96
10-Jun-99
17-Nov-99
14-Sep-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
40
20.5
45
30
10
30
20.6
40
10
20
Hardness (mg/L)
56
-
96
84
76
100
-
-
52
56
40
60
86
62
60
44
—
-
72
52
44
44
42
52
52
60
58
62
60
54
48
60
84
-
50
-
54
61
-
95
61
42
-
69
63
AWQC acute
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
AWQC chronic
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
HQ acute
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
2E-02
1E-02
2E-02
2E-02
5E-03
2E-02
1E-02
2E-02
5E-03
1E-02
HQ chronic
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
4E-02
2E-02
5E-02
3E-02
1E-02
3E-02
2E-02
4E-02
1E-02
2E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 23 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-Adams St
BR-Adams St
643
643
643
643
643
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
656
657
657
657
657
Sample Date
21-Oct-93
Ol-Nov-99
23-Sep-98
02-Dec-98
07-Oct-99
03-Nov-98
22-Sep-92
23-Sep-99
17-Nov-99
16-Nov-93
05-Sep-99
21-May-96
24-Oct-95
07-Aug-98
22-Jul-98
28-Dec-99
09-Sep-98
21-Aug-98
23-Sep-98
05-May-98
Ol-Jul-98
10-Oct-97
19-Nov-97
24-Sep-97
21-May-97
Ol-Apr-98
07-Dec-97
09-Sep-98
21-Aug-98
16-May-97
24-Apr-97
21-Aug-97
16-Jul-97
02-Jul-97
08-May-97
02-Sep-97
18-Jun-97
04-Jun-97
07-Aug-98
22-Jul-98
10-Sep-97
24-Apr-97
23-Sep-98
02-Jul-97
09-Sep-98
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ND Adj Cone
18
20
30
20
30
20
30
10
10
11
30
40
24
25
25
5
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Hardness (mg/L)
71
71
-
-
71
-
66
71
70
67
60
57
68
-
-
-
—
-
94
120
—
100
128
76
68
164
136
90
—
80
124
42
—
44
106
64
58
60
-
78
76
88
-
46
-
AWQC acute
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
AWQC chronic
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
HQ acute
9E-03
1E-02
2E-02
1E-02
2E-02
1E-02
2E-02
5E-03
5E-03
6E-03
2E-02
2E-02
1E-02
1E-02
1E-02
3E-03
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
HQ chronic
2E-02
2E-02
3E-02
2E-02
3E-02
2E-02
3E-02
1E-02
1E-02
1E-02
3E-02
4E-02
2E-02
3E-02
3E-02
5E-03
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 24 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-3
BR-3
BR-3
BR-3
Sample Date
04-Jun-97
21-Aug-98
02-Sep-97
08-May-97
21-Aug-97
18-Jun-97
16-Jul-97
21-May-97
16-May-97
22-Jul-98
Ol-Apr-98
05-May-98
07-Dec-97
Ol-Jul-98
07-Aug-98
24-Sep-97
19-Nov-97
14-Sep-99
14-Sep-99
05-May-99
22-Aug-94
10-Jun-99
05-Sep-99
19-Aug-99
14-Jul-99
23-Sep-99
23-Jul-96
17-Nov-99
02-Nov-99
10-Jun-96
07-Apr-99
23-Sep-98
04-Feb-99
21-Oct-93
03-Nov-98
03-Mar-99
16-Nov-93
02-Dec-98
07-Oct-99
22-Sep-92
07-Apr-99
07-Oct-99
07-Oct-99
10-Jun-96
Ol-Nov-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
5
5
5
32
50
10
20
20
5
20.2
5
5
37.9
5
10
10
14
10
10
34
5
10
5
5
5
20
27.9
5
Hardness (mg/L)
58
-
64
78
52
54
48
64
72
-
84
76
68
-
-
72
68
89
88
159
76
-
81
75
—
93
49
103
108
58
-
-
174
121
-
-
126
-
91
102
—
73
60
54
74
AWQC acute
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
AWQC chronic
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
HQ acute
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
3E-03
3E-03
3E-03
2E-02
3E-02
5E-03
1E-02
1E-02
3E-03
1E-02
3E-03
3E-03
2E-02
3E-03
5E-03
5E-03
7E-03
5E-03
5E-03
2E-02
3E-03
5E-03
3E-03
3E-03
3E-03
1E-02
1E-02
3E-03
HQ chronic
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
3E-02
5E-03
5E-03
5E-03
3E-02
5E-02
1E-02
2E-02
2E-02
5E-03
2E-02
5E-03
5E-03
4E-02
5E-03
1E-02
1E-02
1E-02
1E-02
1E-02
3E-02
5E-03
1E-02
5E-03
5E-03
5E-03
2E-02
3E-02
5E-03
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 25 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Iron
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
Station ID
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-4
BR-5
BR-5
BR-5
BR-BFG
BR-BFG
BR-Dillon
BR-Dillon
FG-4
FG-4
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5. 5
Sample Date
14-Sep-99
10-Jun-99
19-Aug-99
05-May-99
22-Aug-94
05-Sep-99
14-Jul-99
23-Sep-99
23-Jul-96
23-Sep-98
21-Oct-93
07-Apr-99
03-Mar-99
04-Feb-99
03-Nov-98
02-Dec-98
16-Nov-93
17-Nov-99
22-Sep-92
23-Jul-96
22-Sep-92
23-Jul-96
22-May-96
25-Oct-95
24-May-96
26-Oct-95
21-Sep-89
22-Sep-92
05-Sep-99
19-Aug-99
14-Jul-99
22-Jul-96
ll-Jun-96
21-Oct-93
23-Aug-94
10-Jun-99
22-Sep-98
22-Sep-92
16-Nov-93
04-May-89
03-Nov-98
23-Sep-99
08-Oct-99
13-Sep-99
23-Sep-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
5
30
5
5
2.5
5
5
5
6.8
5
22
5
40
5
5
5
127
5
5
2.5
5
2.5
48
8
22
1.5
2.5
1.5
0.1
0.05
0.3
0.4
0.4
0.5
0.5
0.3
0.2
1.5
0.5
2.5
0.2
0.1
0.1
0.1
0.4
Hardness (mg/L)
69
-
65
89
70
63
-
72
50
-
76
-
—
85
-
-
75
70
73
52
72
52
59
86
47
66
58
61
52
54
-
46
37
66
54
-
—
62
65
84
—
64
63
60
75
AWQC acute
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
2.0E+03
3.6E+01
3.7E+01
3.1E+01
3.3E+01
nc
2.8E+01
2.2E+01
4.1E+01
3.3E+01
nc
nc
3.9E+01
4.1E+01
5.3E+01
nc
4.0E+01
3.9E+01
3.7E+01
4.7E+01
AWQC chronic
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
l.OE+03
1.4E+00
1.5E+00
1.2E+00
1.3E+00
nc
1.1E+00
8.5E-01
1.6E+00
1.3E+00
nc
nc
1.5E+00
1.6E+00
2.1E+00
nc
1.5E+00
1.5E+00
1.4E+00
1.8E+00
HQ acute
3E-03
2E-02
3E-03
3E-03
1E-03
3E-03
3E-03
3E-03
3E-03
3E-03
1E-02
3E-03
2E-02
3E-03
3E-03
3E-03
6E-02
3E-03
3E-03
IE-OS
3E-03
1E-03
2E-02
4E-03
1E-02
8E-04
7E-02
4E-02
3E-03
2E-03
nc
1E-02
2E-02
1E-02
2E-02
nc
nc
4E-02
1E-02
5E-02
nc
3E-03
3E-03
3E-03
8E-03
HQ chronic
5E-03
3E-02
5E-03
5E-03
3E-03
5E-03
5E-03
5E-03
7E-03
5E-03
2E-02
5E-03
4E-02
5E-03
5E-03
5E-03
1E-01
5E-03
5E-03
3E-03
5E-03
3E-03
5E-02
8E-03
2E-02
2E-03
2E+00
1E+00
8E-02
4E-02
nc
4E-01
5E-01
3E-01
4E-01
nc
nc
1E+00
3E-01
1E+00
nc
6E-02
7E-02
7E-02
2E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 26 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
General Location
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-5.5
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
1121
1121
1140
FG-6
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
Sample Date
07-Oct-99
Ol-Nov-99
05-Sep-99
13-Sep-99
17-Nov-99
19-Aug-99
05-Sep-99
13-Sep-99
07-Oct-99
23-Aug-OO
23-Sep-99
19-Jul-OO
08-Dec-OO
13-Sep-OO
13-Apr-OO
10-May-OO
21-Jun-OO
09-Jan-OO
17-Nov-99
02-Nov-99
16-Nov-93
14-Jul-99
19-Aug-99
ll-Jun-96
08-Oct-99
23-Aug-94
05-Sep-99
10-Jun-99
22-Jul-96
21-Sep-89
22-Sep-92
23-Sep-99
04-May-89
21-Oct-93
14-Sep-99
13-Jun-96
23-Jul-96
13-Jun-96
ll-Jun-96
22-Jul-96
23-Aug-94
ll-Jun-96
04-May-89
22-Sep-92
21-Sep-89
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.1
0.1
0.2
0.2
0.05
0.1
0.2
0.2
0.1
0.78
0.4
0.53
0.66
0.85
0.76
1.73
1.66
0.9
0.4
0.4
0.5
1.2
0.9
0.9
0.4
0.5
0.8
0.8
0.4
2.5
1.5
0.5
2.5
9
0.3
0.4
24
56.7
65.4
1.1
0.5
1.3
2.5
3.6
2.5
Hardness (mg/L)
76
82
64
71
84
65
64
71
76
-
75
-
—
-
-
-
—
-
89
86
109
-
66
55
73
97
66
-
64
92
95
76
97
109
71
215
446
728
1070
908
699
722
580
440
656
AWQC acute
4.8E+01
5.2E+01
4.0E+01
4.4E+01
5.3E+01
4.0E+01
4.0E+01
4.4E+01
4.8E+01
nc
4.7E+01
nc
nc
nc
nc
nc
nc
nc
5.7E+01
5.5E+01
7.1E+01
nc
4.1E+01
3.4E+01
4.6E+01
6.2E+01
4.1E+01
nc
3.9E+01
5.9E+01
6.1E+01
4.8E+01
6.2E+01
7.1E+01
4.4E+01
1.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
AWQC chronic
1.9E+00
2.0E+00
1.5E+00
1.7E+00
2.1E+00
1.6E+00
1.5E+00
1.7E+00
1.9E+00
nc
1.8E+00
nc
nc
nc
nc
nc
nc
nc
2.2E+00
2.1E+00
2.8E+00
nc
1.6E+00
1.3E+00
1.8E+00
2.4E+00
1.6E+00
nc
1.5E+00
2.3E+00
2.4E+00
1.9E+00
2.4E+00
2.8E+00
1.7E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
HQ acute
2E-03
2E-03
5E-03
5E-03
9E-04
2E-03
5E-03
5E-03
2E-03
nc
8E-03
nc
nc
nc
nc
nc
nc
nc
7E-03
7E-03
7E-03
nc
2E-02
3E-02
9E-03
8E-03
2E-02
nc
1E-02
4E-02
2E-02
1E-02
4E-02
1E-01
7E-03
3E-03
1E-01
2E-01
3E-01
4E-03
2E-03
5E-03
1E-02
1E-02
1E-02
HQ chronic
5E-02
5E-02
1E-01
1E-01
2E-02
6E-02
1E-01
1E-01
5E-02
nc
2E-01
nc
nc
nc
nc
nc
nc
nc
2E-01
2E-01
2E-01
nc
6E-01
7E-01
2E-01
2E-01
5E-01
nc
3E-01
1E+00
6E-01
3E-01
1E+00
3E+00
2E-01
1E-01
6E+00
1E+01
2E+01
3E-01
1E-01
3E-01
6E-01
9E-01
6E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 27 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
General Location
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
FG-6A
FG-6A
FG-6B
FG-6B
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
Sample Date
16-Nov-93
21-Oct-93
22-Jul-96
23-Aug-94
05-Sep-99
19-Aug-99
05-Sep-99
22-Jul-99
05-Sep-99
14-Jul-99
04-Feb-99
07-Apr-99
03-Mar-99
02-Dec-98
21-Jun-OO
09-Jan-OO
10-May-OO
19-Jul-OO
23-Aug-OO
13-Sep-OO
08-Dec-OO
13-Apr-OO
10-Jun-99
03-Nov-98
22-Sep-98
ll-Jun-96
22-Jul-96
07-May-99
02-Nov-99
17-Nov-99
13-Sep-99
23-Sep-99
07-Oct-99
17-Nov-99
07-Oct-99
Ol-Nov-99
23-Sep-99
25-May-96
22-Sep-92
19-Aug-99
25-May-96
21-Oct-93
14-Jul-99
25-May-96
10-Jun-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
6
3.3
12.8
77.7
17.2
2.2
17.2
3
17.5
37.3
1.1
0.8
0.5
40
109
93.6
118
110
130
108
96.3
163
0.5
89.6
7
255.3
59
5.9
0.6
0.7
0.7
1.4
2.2
0.4
0.6
0.1
0.1
4
1.5
0.1
0.5
0.5
0.4
2
0.4
Hardness (mg/L)
625
679
1230
1362
882
659
882
742
882
-
997
-
—
-
-
-
—
-
-
-
—
-
-
-
—
2020
1720
956
996
972
839
1010
957
201
182
203
201
58
102
196
47
123
-
62
-
AWQC acute
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
nc
2.5E+02
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
2.5E+02
1.4E+02
1.2E+02
1.4E+02
1.4E+02
3.6E+01
6.6E+01
1.3E+02
2.8E+01
8.1E+01
nc
3.8E+01
nc
AWQC chronic
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
nc
3.9E+00
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
3.9E+00
1.4E+00
2.6E+00
3.9E+00
1.1E+00
3.1E+00
nc
1.5E+00
nc
HQ acute
2E-02
1E-02
5E-02
3E-01
7E-02
9E-03
7E-02
1E-02
7E-02
nc
4E-03
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
1E+00
2E-01
2E-02
2E-03
3E-03
3E-03
6E-03
9E-03
3E-03
5E-03
7E-04
7E-04
1E-01
2E-02
8E-04
2E-02
6E-03
nc
5E-02
nc
HQ chronic
2E+00
8E-01
3E+00
2E+01
4E+00
6E-01
4E+00
8E-01
4E+00
nc
3E-01
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
nc
6E+01
2E+01
2E+00
2E-01
2E-01
2E-01
4E-01
6E-01
1E-01
2E-01
3E-02
3E-02
3E+00
6E-01
3E-02
5E-01
2E-01
nc
1E+00
nc
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 28 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
General Location
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Station ID
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
TS-3
TS-4
TS-4
FG-0
FG-0
FG-0
FG-1
FG-1
FG-1
FG-1
FG-1
FG-1
FG-2
FG-2
FG-2
FG-3
FG-3
FG-3
FG-10
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
Sample Date
04-May-89
05-Jun-96
05-Jun-96
10-Jun-99
23-Aug-94
ll-Jun-96
14-Sep-99
22-Jul-96
16-Nov-93
05-Sep-99
23-May-96
06-Jun-96
25-May-96
22-Sep-92
21-Sep-89
23-May-96
25-Oct-95
23-May-96
04-May-89
12-Jun-96
22-Sep-92
22-Jul-96
04-May-89
21-Sep-89
22-Sep-92
12-Jun-96
22-Sep-92
22-Jul-96
02-Nov-99
21-Jun-OO
10-Jun-96
09-Jan-OO
13-Apr-OO
19-Jul-OO
22-Jul-96
10-May-OO
21-Jun-96
16-Nov-93
22-May-96
17-Apr-96
25-Jun-96
18-Jul-96
23-Aug-OO
13-Sep-OO
16-May-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
2.5
2
1
0.3
0.5
4.1
0.3
0.9
0.5
0.3
0.5
0.5
0.5
1.5
2.5
0.5
0.5
0.5
2.5
3.6
1.5
0.4
2.5
2.5
1.5
0.4
1.5
0.4
0.5
4.72
4.1
10.4
10.8
3.74
3.4
51.2
2
1.6
3
2
3
3
6.13
6.74
2
Hardness (mg/L)
200
58
58
-
93
68
189
96
120
184
46
53
47
47
58
34
48
34
69
37
53
41
67
60
55
39
62
46
85
-
65
-
—
-
84
-
62
125
75
160
65
18
-
-
82
AWQC acute
1.4E+02
3.6E+01
3.6E+01
nc
6.0E+01
4.2E+01
1.3E+02
6.2E+01
7.9E+01
1.2E+02
2.7E+01
3.2E+01
2.8E+01
2.8E+01
3.6E+01
2.0E+01
2.9E+01
2.0E+01
4.3E+01
2.2E+01
3.2E+01
2.4E+01
4.2E+01
3.7E+01
3.3E+01
2.3E+01
3.8E+01
2.8E+01
5.4E+01
nc
4.0E+01
nc
nc
nc
5.3E+01
nc
3.8E+01
8.2E+01
4.7E+01
1.1E+02
4.0E+01
9.6E+00
nc
nc
5.2E+01
AWQC chronic
3.9E+00
1.4E+00
1.4E+00
nc
2.3E+00
1.6E+00
3.9E+00
2.4E+00
3.1E+00
3.9E+00
1.1E+00
1.3E+00
1.1E+00
1.1E+00
1.4E+00
7.6E-01
1.1E+00
7.6E-01
1.7E+00
8.4E-01
1.3E+00
9.3E-01
1.6E+00
1.4E+00
1.3E+00
8.8E-01
1.5E+00
1.1E+00
2.1E+00
nc
1.6E+00
nc
nc
nc
2.1E+00
nc
1.5E+00
3.2E+00
1.8E+00
3.9E+00
1.6E+00
3.7E-01
nc
nc
2.0E+00
HQ acute
2E-02
6E-02
3E-02
nc
8E-03
1E-01
2E-03
1E-02
6E-03
2E-03
2E-02
2E-02
2E-02
5E-02
7E-02
3E-02
2E-02
3E-02
6E-02
2E-01
5E-02
2E-02
6E-02
7E-02
5E-02
2E-02
4E-02
1E-02
9E-03
nc
1E-01
nc
nc
nc
6E-02
nc
5E-02
2E-02
6E-02
2E-02
7E-02
3E-01
nc
nc
4E-02
HQ chronic
6E-01
1E+00
7E-01
nc
2E-01
3E+00
8E-02
4E-01
2E-01
8E-02
5E-01
4E-01
5E-01
1E+00
2E+00
7E-01
4E-01
7E-01
1E+00
4E+00
1E+00
4E-01
2E+00
2E+00
1E+00
5E-01
1E+00
4E-01
2E-01
nc
3E+00
nc
nc
nc
2E+00
nc
1E+00
5E-01
2E+00
5E-01
2E+00
8E+00
nc
nc
1E+00
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 29 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
General Location
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Discharge
Discharge
Discharge
Discharge
Discharge
Discharge
Station ID
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-9A
FG-9A
FG-9A
CBMA-1
KDS
KDS
MGB-1
RLCVT-1
WP-1
Sample Date
08-Oct-99
08-Dec-OO
21-Mar-96
02-Dec-98
13-Sep-99
02-Nov-99
05-Sep-99
23-Sep-99
07-Apr-99
07-May-99
23-Aug-94
17-Nov-99
19-Aug-99
14-Jul-99
10-Jun-99
24-Sep-98
03-Mar-99
03-Nov-98
21-Oct-93
21-Feb-97
16-Jan-97
19-Jan-96
13-Dec-96
21-Nov-95
23-Oct-95
13-Nov-96
08-Oct-96
09-Sep-96
15-Aug-96
21-Sep-89
04-May-89
26-May-96
22-Feb-96
04-Feb-99
22-Sep-92
22-Jul-96
23-Aug-94
ll-Jun-96
22-Sep-98
23-Jul-96
13-Jun-96
24-Aug-94
23-Jul-96
23-Jul-96
12-Jun-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
2.9
8.6
0.5
20
2.1
5.2
2.4
2.4
1.9
1.6
3.3
4.7
1.7
1.3
2.3
3.8
1.3
3.7
1.4
8
8
8
7
7
7
6
5
5
5
2.5
2.5
4
7
7
1.5
0.4
0.5
3.5
0.2
0.8
0.4
0.5
0.8
0.8
744
Hardness (mg/L)
95
-
140
-
92
108
85
102
—
172
102
113
87
-
-
-
—
-
121
160
140
150
140
120
110
120
110
110
99
102
140
62
150
175
103
85
96
65
-
224
296
222
82
86
4980
AWQC acute
6.1E+01
nc
9.3E+01
nc
5.9E+01
7.0E+01
5.4E+01
6.6E+01
nc
1.2E+02
6.6E+01
7.4E+01
5.5E+01
nc
nc
nc
nc
nc
7.9E+01
1.1E+02
9.3E+01
l.OE+02
9.3E+01
7.9E+01
7.2E+01
7.9E+01
7.2E+01
7.2E+01
6.4E+01
6.6E+01
9.3E+01
3.8E+01
l.OE+02
1.2E+02
6.7E+01
5.4E+01
6.2E+01
4.0E+01
nc
1.5E+02
2.1E+02
1.5E+02
5.2E+01
5.5E+01
2.5E+02
AWQC chronic
2.4E+00
nc
3.6E+00
nc
2.3E+00
2.7E+00
2.1E+00
2.6E+00
nc
3.9E+00
2.6E+00
2.9E+00
2.2E+00
nc
nc
nc
nc
nc
3.1E+00
3.9E+00
3.6E+00
3.9E+00
3.6E+00
3.1E+00
2.8E+00
3.1E+00
2.8E+00
2.8E+00
2.5E+00
2.6E+00
3.6E+00
1.5E+00
3.9E+00
3.9E+00
2.6E+00
2.1E+00
2.4E+00
1.6E+00
nc
3.9E+00
3.9E+00
3.9E+00
2.0E+00
2.1E+00
3.9E+00
HQ acute
5E-02
nc
5E-03
nc
4E-02
7E-02
4E-02
4E-02
nc
1E-02
5E-02
6E-02
3E-02
nc
nc
nc
nc
nc
2E-02
7E-02
9E-02
8E-02
8E-02
9E-02
1E-01
8E-02
7E-02
7E-02
8E-02
4E-02
3E-02
1E-01
7E-02
6E-02
2E-02
7E-03
8E-03
9E-02
nc
5E-03
2E-03
3E-03
2E-02
1E-02
3E+00
HQ chronic
1E+00
nc
1E-01
nc
9E-01
2E+00
1E+00
9E-01
nc
4E-01
1E+00
2E+00
8E-01
nc
nc
nc
nc
nc
5E-01
2E+00
2E+00
2E+00
2E+00
2E+00
3E+00
2E+00
2E+00
2E+00
2E+00
1E+00
7E-01
3E+00
2E+00
2E+00
6E-01
2E-01
2E-01
2E+00
nc
2E-01
1E-01
1E-01
4E-01
4E-01
2E+02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 30 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Station ID
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
BR-1
Sample Date
24-Apr-97
02-Sep-97
18-Jun-97
02-Jul-97
21-Aug-97
04-Jun-97
16-Jul-97
21-Aug-98
Ol-Apr-98
Ol-Jul-98
09-Sep-98
10-Oct-97
07-Dec-97
19-Nov-97
05-May-98
24-Sep-97
08-May-97
21-May-97
07-Aug-98
22-Jul-98
23-Sep-98
10-Sep-97
16-May-97
07-Dec-97
10-Oct-97
24-Sep-97
04-Jun-97
16-May-97
10-Sep-97
05-May-98
Ol-Jul-98
18-Jun-97
16-Jul-97
21-May-97
08-May-97
24-Apr-97
09-Sep-98
02-Jul-97
02-Sep-97
22-Jul-98
21-Aug-97
21-Aug-98
23-Sep-98
07-Aug-98
23-Aug-94
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/L
ND Adj Cone
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
Hardness (mg/L)
86
56
60
40
52
62
60
-
100
-
-
72
84
96
76
56
78
66
-
-
—
60
72
-
60
52
54
62
44
72
-
52
44
60
74
84
—
42
52
58
44
50
60
48
61
AWQC acute
5.5E+01
3.4E+01
3.7E+01
2.4E+01
3.1E+01
3.8E+01
3.7E+01
nc
6.5E+01
nc
nc
4.5E+01
5.3E+01
6.2E+01
4.8E+01
3.4E+01
4.9E+01
4.1E+01
nc
nc
nc
3.7E+01
4.5E+01
nc
3.7E+01
3.1E+01
3.3E+01
3.8E+01
2.6E+01
4.5E+01
nc
3.1E+01
2.6E+01
3.7E+01
4.6E+01
5.3E+01
nc
2.5E+01
3.1E+01
3.6E+01
2.6E+01
3.0E+01
3.7E+01
2.9E+01
3.8E+01
AWQC chronic
2.1E+00
1.3E+00
1.4E+00
9.2E-01
1.2E+00
1.5E+00
1.4E+00
nc
2.5E+00
nc
nc
1.8E+00
2.1E+00
2.4E+00
1.9E+00
1.3E+00
1.9E+00
1.6E+00
nc
nc
nc
1.4E+00
1.8E+00
nc
1.4E+00
1.2E+00
1.3E+00
1.5E+00
l.OE+00
1.8E+00
nc
1.2E+00
l.OE+00
1.4E+00
1.8E+00
2.1E+00
nc
9.7E-01
1.2E+00
1.4E+00
l.OE+00
1.2E+00
1.4E+00
1.1E+00
1.5E+00
HQ acute
9E-03
1E-02
1E-02
2E-02
2E-02
1E-02
1E-02
nc
8E-03
nc
nc
1E-02
9E-03
8E-03
1E-02
1E-02
1E-02
1E-02
nc
nc
nc
1E-02
1E-02
nc
1E-02
2E-02
2E-02
1E-02
2E-02
1E-02
nc
2E-02
2E-02
1E-02
1E-02
9E-03
nc
2E-02
2E-02
1E-02
2E-02
2E-02
1E-02
2E-02
1E-02
HQ chronic
2E-01
4E-01
3E-01
5E-01
4E-01
3E-01
3E-01
nc
2E-01
nc
nc
3E-01
2E-01
2E-01
3E-01
4E-01
3E-01
3E-01
nc
nc
nc
3E-01
3E-01
nc
3E-01
4E-01
4E-01
3E-01
5E-01
3E-01
nc
4E-01
5E-01
3E-01
3E-01
2E-01
nc
5E-01
4E-01
4E-01
5E-01
4E-01
3E-01
4E-01
3E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 31 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-Adams St
BR-Adams St
643
643
643
643
643
656
656
656
656
656
656
656
656
656
656
656
656
Sample Date
23-Sep-99
19-Jul-OO
23-Aug-OO
17-Nov-99
05-May-99
05-Sep-99
21-Jun-OO
13-Sep-OO
10-Jun-99
21-Sep-89
16-Nov-93
Ol-Nov-99
03-Nov-98
23-Sep-98
07-Oct-99
14-Jul-99
10-Jun-99
04-May-89
23-Sep-99
14-Sep-99
21-Oct-93
19-Aug-99
10-Jun-96
17-Nov-99
22-Sep-92
23-Jul-96
21-May-96
24-Oct-95
21-Aug-98
07-Aug-98
22-Jul-98
28-Dec-99
09-Sep-98
16-Jul-97
08-May-97
22-Jul-98
07-Aug-98
09-Sep-98
21-Aug-97
21-Aug-98
02-Sep-97
19-Nov-97
10-Oct-97
24-Sep-97
05-May-98
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ND Adj Cone
0.1
0.62
1.19
0.05
0.2
0.1
4.66
1.43
0.2
2.5
0.5
0.1
0.2
0.2
0.1
0.1
0.2
2.5
0.1
0.1
0.5
0.2
0.4
0.05
1.5
0.4
0.5
0.5
0.5
1.8
0.5
1.5
0.5
0.5
0.5
0.5
0.5
2.2
0.5
1.3
0.5
1
0.5
0.5
0.5
Hardness (mg/L)
71
-
-
70
95
60
-
-
—
58
67
71
—
-
71
-
—
67
72
63
71
61
54
69
66
42
57
68
—
-
-
-
—
-
106
78
—
90
42
-
64
128
100
76
120
AWQC acute
4.4E+01
nc
nc
4.4E+01
6.1E+01
3.7E+01
nc
nc
nc
3.6E+01
4.2E+01
4.4E+01
nc
nc
4.4E+01
nc
nc
4.2E+01
4.5E+01
3.9E+01
4.4E+01
3.8E+01
3.3E+01
4.3E+01
4.1E+01
2.5E+01
3.5E+01
4.2E+01
nc
nc
nc
nc
nc
nc
6.9E+01
4.9E+01
nc
5.8E+01
2.5E+01
nc
4.0E+01
8.4E+01
6.5E+01
4.8E+01
7.9E+01
AWQC chronic
1.7E+00
nc
nc
1.7E+00
2.4E+00
1.4E+00
nc
nc
nc
1.4E+00
1.6E+00
1.7E+00
nc
nc
1.7E+00
nc
nc
1.6E+00
1.8E+00
1.5E+00
1.7E+00
1.5E+00
1.3E+00
1.7E+00
1.6E+00
9.6E-01
1.4E+00
1.6E+00
nc
nc
nc
nc
nc
nc
2.7E+00
1.9E+00
nc
2.2E+00
9.7E-01
nc
1.5E+00
3.3E+00
2.5E+00
1.9E+00
3.1E+00
HQ acute
2E-03
nc
nc
1E-03
3E-03
3E-03
nc
nc
nc
7E-02
1E-02
2E-03
nc
nc
2E-03
nc
nc
6E-02
2E-03
3E-03
1E-02
5E-03
1E-02
1E-03
4E-02
2E-02
1E-02
1E-02
nc
nc
nc
nc
nc
nc
7E-03
1E-02
nc
4E-02
2E-02
nc
1E-02
1E-02
8E-03
1E-02
6E-03
HQ chronic
6E-02
nc
nc
3E-02
8E-02
7E-02
nc
nc
nc
2E+00
3E-01
6E-02
nc
nc
6E-02
nc
nc
2E+00
6E-02
7E-02
3E-01
1E-01
3E-01
3E-02
9E-01
4E-01
4E-01
3E-01
nc
nc
nc
nc
nc
nc
2E-01
3E-01
nc
1E+00
5E-01
nc
3E-01
3E-01
2E-01
3E-01
2E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 32 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
656
656
656
656
656
656
656
656
656
656
656
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
Sample Date
16-May-97
10-Sep-97
23-Sep-98
Ol-Apr-98
21-May-97
07-Dec-97
Ol-Jul-98
04-Jun-97
02-Jul-97
24-Apr-97
18-Jun-97
07-Aug-98
22-Jul-98
Ol-Jul-98
05-May-98
Ol-Apr-98
07-Dec-97
19-Nov-97
02-Jul-97
23-Sep-98
21-Aug-98
04-Jun-97
09-Sep-98
02-Sep-97
24-Sep-97
08-May-97
24-Apr-97
16-May-97
21-May-97
18-Jun-97
16-Jul-97
21-Aug-97
21-Oct-93
22-Sep-92
10-Jun-99
10-Jun-96
23-Jul-96
16-Nov-93
05-May-99
10-May-OO
22-Aug-94
19-Jul-OO
21-Jun-OO
23-Sep-99
07-Apr-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.5
0.5
1.4
0.5
0.5
2.6
0.5
1.1
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.8
1.5
0.8
0.4
0.4
1.9
0.6
2.5
1.4
1.34
3.55
2.1
1.7
Hardness (mg/L)
80
76
94
164
68
136
-
60
44
124
58
-
—
-
76
84
68
68
46
-
—
58
-
64
72
78
88
72
64
54
48
52
121
102
-
58
49
126
159
-
76
-
-
93
-
AWQC acute
5.1E+01
4.8E+01
6.0E+01
1.1E+02
4.2E+01
9.0E+01
nc
3.7E+01
2.6E+01
8.2E+01
3.6E+01
nc
nc
nc
4.8E+01
5.3E+01
4.2E+01
4.2E+01
2.7E+01
nc
nc
3.6E+01
nc
4.0E+01
4.5E+01
4.9E+01
5.6E+01
4.5E+01
4.0E+01
3.3E+01
2.9E+01
3.1E+01
8.0E+01
6.6E+01
nc
3.6E+01
2.9E+01
8.3E+01
1.1E+02
nc
4.8E+01
nc
nc
6.0E+01
nc
AWQC chronic
2.0E+00
1.9E+00
2.4E+00
3.9E+00
1.6E+00
3.5E+00
nc
1.4E+00
l.OE+00
3.2E+00
1.4E+00
nc
nc
nc
1.9E+00
2.1E+00
1.6E+00
1.6E+00
1.1E+00
nc
nc
1.4E+00
nc
1.5E+00
1.8E+00
1.9E+00
2.2E+00
1.8E+00
1.5E+00
1.3E+00
1.1E+00
1.2E+00
3.1E+00
2.6E+00
nc
1.4E+00
1.1E+00
3.2E+00
3.9E+00
nc
1.9E+00
nc
nc
2.3E+00
nc
HQ acute
1E-02
1E-02
2E-02
5E-03
1E-02
3E-02
nc
3E-02
2E-02
6E-03
1E-02
nc
nc
nc
1E-02
9E-03
1E-02
1E-02
2E-02
nc
nc
1E-02
nc
1E-02
1E-02
1E-02
9E-03
1E-02
1E-02
2E-02
2E-02
2E-02
2E-02
2E-02
nc
1E-02
1E-02
2E-02
6E-03
nc
3E-02
nc
nc
4E-02
nc
HQ chronic
3E-01
3E-01
6E-01
1E-01
3E-01
7E-01
nc
8E-01
5E-01
2E-01
4E-01
nc
nc
nc
3E-01
2E-01
3E-01
3E-01
5E-01
nc
nc
4E-01
nc
3E-01
3E-01
3E-01
2E-01
3E-01
3E-01
4E-01
4E-01
4E-01
6E-01
6E-01
nc
3E-01
3E-01
6E-01
2E-01
nc
7E-01
nc
nc
9E-01
nc
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 33 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
Sample Date
07-Apr-99
13-Apr-OO
17-Nov-99
14-Sep-99
07-Oct-99
21-Sep-89
23-Aug-OO
04-May-89
04-Feb-99
08-Dec-OO
14-Sep-99
02-Nov-99
13-Sep-OO
19-Aug-99
23-Sep-98
14-Jul-99
03-Mar-99
05-Sep-99
02-Dec-98
03-Nov-98
22-Aug-94
Ol-Nov-99
10-Jun-99
23-Aug-OO
19-Jul-OO
21-Jun-OO
05-Sep-99
04-Feb-99
07-Apr-99
05-May-99
17-Nov-99
08-Dec-OO
04-May-89
21-Sep-89
03-Mar-99
16-Nov-93
13-Sep-OO
19-Aug-99
10-Jun-96
23-Sep-99
09-Jan-OO
14-Jul-99
07-Oct-99
21-Oct-93
02-Dec-98
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
1.6
9.44
3.5
1.7
1.2
2.5
3.45
2.5
4.3
7.6
1.9
5.8
4.12
0.8
2.4
0.3
1
1.6
20
2.7
0.5
0.1
0.3
0.82
0.71
1.77
0.1
0.2
0.1
0.2
0.3
0.48
2.5
2.5
0.2
0.5
0.42
0.05
0.4
0.1
0.48
0.1
0.1
0.5
20
Hardness (mg/L)
—
-
103
88
91
108
-
140
174
-
89
108
—
75
-
-
—
81
-
-
70
74
-
-
—
-
63
85
—
89
70
-
80
68
-
75
—
65
54
72
—
-
60
76
-
AWQC acute
nc
nc
6.7E+01
5.6E+01
5.8E+01
7.0E+01
nc
9.3E+01
1.2E+02
nc
5.7E+01
7.0E+01
nc
4.7E+01
nc
nc
nc
5.1E+01
nc
nc
4.3E+01
4.6E+01
nc
nc
nc
nc
3.9E+01
5.4E+01
nc
5.7E+01
4.4E+01
nc
5.1E+01
4.2E+01
nc
4.7E+01
nc
4.0E+01
3.3E+01
4.5E+01
nc
nc
3.7E+01
4.8E+01
nc
AWQC chronic
nc
nc
2.6E+00
2.2E+00
2.3E+00
2.7E+00
nc
3.6E+00
3.9E+00
nc
2.2E+00
2.7E+00
nc
1.8E+00
nc
nc
nc
2.0E+00
nc
nc
1.7E+00
1.8E+00
nc
nc
nc
nc
1.5E+00
2.1E+00
nc
2.2E+00
1.7E+00
nc
2.0E+00
1.6E+00
nc
1.8E+00
nc
1.6E+00
1.3E+00
1.8E+00
nc
nc
1.4E+00
1.9E+00
nc
HQ acute
nc
nc
5E-02
3E-02
2E-02
4E-02
nc
3E-02
4E-02
nc
3E-02
8E-02
nc
2E-02
nc
nc
nc
3E-02
nc
nc
1E-02
2E-03
nc
nc
nc
nc
3E-03
4E-03
nc
4E-03
7E-03
nc
5E-02
6E-02
nc
1E-02
nc
1E-03
1E-02
2E-03
nc
nc
3E-03
1E-02
nc
HQ chronic
nc
nc
1E+00
8E-01
5E-01
9E-01
nc
7E-01
1E+00
nc
9E-01
2E+00
nc
4E-01
nc
nc
nc
8E-01
nc
nc
3E-01
6E-02
nc
nc
nc
nc
7E-02
9E-02
nc
9E-02
2E-01
nc
1E+00
2E+00
nc
3E-01
nc
3E-02
3E-01
6E-02
nc
nc
7E-02
3E-01
nc
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 34 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Lead
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
Station ID
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-4
BR-5
BR-5
BR-5
BR-BFG
BR-BFG
BR-Dillon
BR-Dillon
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
Sample Date
07-Oct-99
14-Sep-99
13-Apr-OO
10-May-OO
23-Sep-98
23-Jul-96
03-Nov-98
22-Sep-92
22-Sep-92
23-Jul-96
23-Jul-96
25-Oct-95
22-May-96
24-May-96
26-Oct-95
05-Sep-99
21-Oct-93
ll-Jun-96
22-Jul-96
23-Aug-94
08-Oct-99
16-Nov-93
23-Sep-99
19-Aug-99
13-Sep-99
23-Sep-99
05-Sep-99
13-Sep-99
07-Oct-99
23-Sep-99
13-Sep-99
05-Sep-99
19-Aug-99
07-Oct-99
Ol-Nov-99
17-Nov-99
02-Nov-99
17-Nov-99
22-Jul-96
23-Aug-94
ll-Jun-96
16-Nov-93
21-Oct-93
23-Sep-99
14-Sep-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.1
0.1
0.86
1.21
0.2
0.4
0.2
1.5
1.5
0.4
0.4
2
1
0.5
0.5
5
7.5
5
5
6
5
7.5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
6
5
7.5
7.5
5
5
Hardness (mg/L)
73
69
-
-
—
50
-
73
72
52
52
86
59
47
66
52
66
37
46
54
63
65
64
54
60
75
64
71
76
75
71
64
65
76
82
84
86
89
64
97
55
109
109
76
71
AWQC acute
4.6E+01
4.3E+01
nc
nc
nc
3.0E+01
nc
4.6E+01
4.5E+01
3.2E+01
3.1E+01
5.5E+01
3.6E+01
2.8E+01
4.1E+01
2.7E+02
3.3E+02
2.0E+02
2.4E+02
2.8E+02
3.2E+02
3.3E+02
3.2E+02
2.8E+02
3.0E+02
3.7E+02
3.2E+02
3.5E+02
3.7E+02
3.7E+02
3.5E+02
3.2E+02
3.3E+02
3.7E+02
4.0E+02
4.0E+02
4.1E+02
4.2E+02
3.2E+02
4.5E+02
2.8E+02
5.1E+02
5.0E+02
3.7E+02
3.5E+02
AWQC chronic
1.8E+00
1.7E+00
nc
nc
nc
1.2E+00
nc
1.8E+00
1.8E+00
1.2E+00
1.2E+00
2.1E+00
1.4E+00
1.1E+00
1.6E+00
3.0E+01
3.7E+01
2.3E+01
2.7E+01
3.1E+01
3.5E+01
3.6E+01
3.6E+01
3.1E+01
3.4E+01
4.1E+01
3.6E+01
3.9E+01
4.1E+01
4.1E+01
3.9E+01
3.6E+01
3.6E+01
4.1E+01
4.4E+01
4.5E+01
4.6E+01
4.7E+01
3.5E+01
5.0E+01
3.1E+01
5.6E+01
5.6E+01
4.1E+01
3.9E+01
HQ acute
2E-03
2E-03
nc
nc
nc
1E-02
nc
3E-02
3E-02
1E-02
1E-02
4E-02
3E-02
2E-02
1E-02
2E-02
2E-02
2E-02
2E-02
2E-02
2E-02
2E-02
2E-02
2E-02
2E-02
1E-02
2E-02
1E-02
1E-02
1E-02
1E-02
2E-02
2E-02
1E-02
1E-02
1E-02
1E-02
1E-02
2E-02
1E-02
2E-02
1E-02
1E-02
1E-02
1E-02
HQ chronic
6E-02
6E-02
nc
nc
nc
3E-01
nc
8E-01
9E-01
3E-01
3E-01
9E-01
7E-01
5E-01
3E-01
2E-01
2E-01
2E-01
2E-01
2E-01
1E-01
2E-01
1E-01
2E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
2E-01
1E-01
1E-01
1E-01
1E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 35 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
General Location
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
FG-8
FG-8
FG-8
1121
1121
1140
FG-6
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6B
FG-6B
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
TS-3
TS-4
TS-4
Sample Date
08-Oct-99
05-Sep-99
19-Aug-99
23-Jul-96
13-Jun-96
13-Jun-96
ll-Jun-96
22-Jul-96
21-Oct-93
23-Aug-94
22-Sep-92
16-Nov-93
ll-Jun-96
23-Aug-94
22-Jul-96
23-Sep-99
07-Oct-99
02-Nov-99
17-Nov-99
05-Sep-99
22-Jul-96
05-Sep-99
ll-Jun-96
19-Aug-99
13-Sep-99
05-Sep-99
05-Sep-99
19-Aug-99
16-Nov-93
23-Aug-94
21-Oct-93
22-Jul-96
05-Jun-96
25-May-96
22-Sep-92
25-May-96
07-Oct-99
Ol-Nov-99
17-Nov-99
14-Sep-99
23-Sep-99
ll-Jun-96
23-May-96
25-May-96
06-Jun-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
5
5
5
58
15.9
81.3
116.6
115.1
69
62
38
69
88.9
169
170.2
120
130
120
130
110
281.7
110
364.7
100
130
100
10
10
7.5
6
7.5
5
2
2
15
0.5
10
10
20
5
10
5
0.5
0.5
0.5
Hardness (mg/L)
73
66
66
446
215
728
1070
908
679
699
440
625
722
1362
1230
1010
957
996
972
882
1720
882
2020
659
839
882
184
196
120
93
123
96
58
62
102
58
182
203
201
189
201
68
46
47
53
AWQC acute
3.6E+02
3.3E+02
3.3E+02
1.4E+03
8.9E+02
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
1.4E+03
7.8E+02
8.3E+02
5.5E+02
4.4E+02
5.6E+02
4.5E+02
3.0E+02
3.1E+02
4.8E+02
3.0E+02
7.8E+02
8.5E+02
8.5E+02
8.0E+02
8.5E+02
3.4E+02
2.4E+02
2.5E+02
2.7E+02
AWQC chronic
4.0E+01
3.7E+01
3.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
9.7E+01
8.7E+01
9.2E+01
6.1E+01
4.9E+01
6.2E+01
5.0E+01
3.3E+01
3.5E+01
5.3E+01
3.3E+01
8.6E+01
9.5E+01
9.4E+01
8.9E+01
9.4E+01
3.7E+01
2.7E+01
2.7E+01
3.0E+01
HQ acute
1E-02
2E-02
2E-02
4E-02
2E-02
6E-02
8E-02
8E-02
5E-02
4E-02
3E-02
5E-02
6E-02
1E-01
1E-01
9E-02
9E-02
9E-02
9E-02
8E-02
2E-01
8E-02
3E-01
7E-02
9E-02
7E-02
1E-02
1E-02
1E-02
1E-02
1E-02
1E-02
7E-03
6E-03
3E-02
2E-03
1E-02
1E-02
2E-02
6E-03
1E-02
1E-02
2E-03
2E-03
2E-03
HQ chronic
1E-01
1E-01
1E-01
6E-01
2E-01
8E-01
1E+00
1E+00
7E-01
6E-01
4E-01
7E-01
9E-01
2E+00
2E+00
1E+00
1E+00
1E+00
1E+00
1E+00
3E+00
1E+00
4E+00
1E+00
1E+00
1E+00
1E-01
1E-01
1E-01
1E-01
1E-01
1E-01
6E-02
6E-02
3E-01
2E-02
1E-01
1E-01
2E-01
6E-02
1E-01
1E-01
2E-02
2E-02
2E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 36 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
General Location
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Discharge
Station ID
FG-0
FG-0
FG-1
FG-1
FG-1
FG-1
FG-1
FG-2
FG-3
FG-3
FG-3
FG-10
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-9A
FG-9A
CBMA-1
Sample Date
22-Sep-92
23-May-96
23-May-96
25-Oct-95
22-Jul-96
22-Sep-92
12-Jun-96
22-Sep-92
22-Sep-92
22-Jul-96
12-Jun-96
02-Nov-99
16-Nov-93
13-Sep-99
10-Jun-96
16-Jan-97
23-Sep-99
15-Aug-96
08-Oct-96
13-Nov-96
19-Jan-96
21-Oct-93
23-Aug-94
17-Apr-96
22-Feb-96
13-Dec-96
21-Feb-97
05-Sep-99
19-Aug-99
22-Jul-96
21-Mar-96
21-Jun-96
26-May-96
08-Oct-99
23-Oct-95
21-Nov-95
09-Sep-96
18-Jul-96
17-Nov-99
02-Nov-99
22-May-96
ll-Jun-96
22-Jul-96
23-Aug-94
23-Jul-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
15
0.5
0.5
0.5
5
15
5
15
15
5
5
5
7.5
5
5
4
5
3
3
3
4
7.5
6
5
5
5
4
5
5
5
4
2
2
5
2
2
2
3
5
5
3
5
5
6
10
Hardness (mg/L)
47
34
34
48
41
53
37
55
62
46
39
85
125
92
65
140
102
99
110
120
150
121
102
160
150
140
160
85
87
84
140
62
62
95
110
120
110
18
113
108
75
65
85
96
224
AWQC acute
2.5E+02
1.9E+02
1.9E+02
2.5E+02
2.2E+02
2.7E+02
2.0E+02
2.8E+02
3.1E+02
2.4E+02
2.1E+02
4.1E+02
5.6E+02
4.4E+02
3.3E+02
6.2E+02
4.8E+02
4.6E+02
5.1E+02
5.5E+02
6.6E+02
5.5E+02
4.7E+02
7.0E+02
6.6E+02
6.2E+02
7.0E+02
4.1E+02
4.2E+02
4.0E+02
6.2E+02
3.1E+02
3.1E+02
4.5E+02
5.1E+02
5.5E+02
5.1E+02
1.1E+02
5.2E+02
5.0E+02
3.7E+02
3.3E+02
4.1E+02
4.5E+02
9.3E+02
AWQC chronic
2.8E+01
2.1E+01
2.1E+01
2.8E+01
2.4E+01
3.0E+01
2.3E+01
3.1E+01
3.4E+01
2.7E+01
2.3E+01
4.5E+01
6.3E+01
4.8E+01
3.6E+01
6.9E+01
5.3E+01
5.2E+01
5.6E+01
6.1E+01
7.3E+01
6.1E+01
5.3E+01
7.7E+01
7.3E+01
6.9E+01
7.7E+01
4.5E+01
4.6E+01
4.5E+01
6.9E+01
3.5E+01
3.5E+01
5.0E+01
5.6E+01
6.1E+01
5.6E+01
1.2E+01
5.8E+01
5.6E+01
4.1E+01
3.6E+01
4.5E+01
5.0E+01
9.7E+01
HQ acute
6E-02
3E-03
3E-03
2E-03
2E-02
5E-02
2E-02
5E-02
5E-02
2E-02
2E-02
1E-02
1E-02
1E-02
2E-02
6E-03
1E-02
6E-03
6E-03
5E-03
6E-03
1E-02
1E-02
7E-03
8E-03
8E-03
6E-03
1E-02
1E-02
1E-02
6E-03
6E-03
6E-03
1E-02
4E-03
4E-03
4E-03
3E-02
1E-02
1E-02
8E-03
2E-02
1E-02
1E-02
1E-02
HQ chronic
5E-01
2E-02
2E-02
2E-02
2E-01
5E-01
2E-01
5E-01
4E-01
2E-01
2E-01
1E-01
1E-01
1E-01
1E-01
6E-02
9E-02
6E-02
5E-02
5E-02
5E-02
1E-01
1E-01
6E-02
7E-02
7E-02
5E-02
1E-01
1E-01
1E-01
6E-02
6E-02
6E-02
1E-01
4E-02
3E-02
4E-02
2E-01
9E-02
9E-02
7E-02
1E-01
1E-01
1E-01
1E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 37 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
General Location
Discharge
Discharge
Discharge
Discharge
Discharge
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
KDS
KDS
MGB-1
RLCVT-1
WP-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-Adams St
BR-Adams St
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
Sample Date
24-Aug-94
13-Jun-96
23-Jul-96
23-Jul-96
12-Jun-96
10-Jun-96
23-Jul-96
19-Aug-99
17-Nov-99
23-Sep-99
21-Oct-93
22-Sep-92
07-Oct-99
23-Sep-99
Ol-Nov-99
17-Nov-99
16-Nov-93
23-Aug-94
05-Sep-99
14-Sep-99
21-May-96
24-Oct-95
02-Nov-99
23-Jul-96
07-Oct-99
19-Aug-99
05-Sep-99
21-Oct-93
22-Sep-92
22-Aug-94
14-Sep-99
23-Sep-99
14-Sep-99
16-Nov-93
17-Nov-99
10-Jun-96
23-Sep-99
17-Nov-99
07-Oct-99
07-Oct-99
Ol-Nov-99
16-Nov-93
21-Oct-93
10-Jun-96
22-Aug-94
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
6
40.9
10
10
1377
5
5
5
5
5
7.5
15
5
5
5
5
7.5
6
5
5
0.5
0.5
5
5
5
5
5
7.5
15
6
5
5
5
7.5
5
5
5
5
5
5
5
7.5
7.5
5
6
Hardness (mg/L)
222
296
82
86
4980
54
42
61
69
71
71
66
71
72
71
70
67
61
60
63
57
68
108
49
91
75
81
121
102
76
89
93
88
126
103
58
72
70
60
73
74
75
76
54
70
AWQC acute
9.2E+02
1.2E+03
4.0E+02
4.1E+02
1.4E+03
2.8E+02
2.2E+02
3.1E+02
3.4E+02
3.5E+02
3.5E+02
3.3E+02
3.5E+02
3.5E+02
3.5E+02
3.5E+02
3.3E+02
3.1E+02
3.0E+02
3.2E+02
2.9E+02
3.4E+02
5.0E+02
2.6E+02
4.3E+02
3.7E+02
3.9E+02
5.5E+02
4.8E+02
3.7E+02
4.2E+02
4.4E+02
4.2E+02
5.7E+02
4.8E+02
3.0E+02
3.5E+02
3.5E+02
3.0E+02
3.6E+02
3.6E+02
3.7E+02
3.7E+02
2.8E+02
3.4E+02
AWQC chronic
9.7E+01
9.7E+01
4.4E+01
4.6E+01
9.7E+01
3.1E+01
2.5E+01
3.4E+01
3.8E+01
3.9E+01
3.9E+01
3.6E+01
3.9E+01
3.9E+01
3.9E+01
3.8E+01
3.7E+01
3.4E+01
3.4E+01
3.5E+01
3.2E+01
3.8E+01
5.6E+01
2.8E+01
4.8E+01
4.1E+01
4.4E+01
6.1E+01
5.3E+01
4.1E+01
4.7E+01
4.9E+01
4.7E+01
6.3E+01
5.3E+01
3.3E+01
3.9E+01
3.8E+01
3.4E+01
4.0E+01
4.0E+01
4.1E+01
4.1E+01
3.1E+01
3.8E+01
HQ acute
7E-03
3E-02
3E-02
2E-02
1E+00
2E-02
2E-02
2E-02
1E-02
1E-02
2E-02
5E-02
1E-02
1E-02
1E-02
1E-02
2E-02
2E-02
2E-02
2E-02
2E-03
1E-03
1E-02
2E-02
1E-02
1E-02
1E-02
1E-02
3E-02
2E-02
1E-02
1E-02
1E-02
1E-02
1E-02
2E-02
1E-02
1E-02
2E-02
1E-02
1E-02
2E-02
2E-02
2E-02
2E-02
HQ chronic
6E-02
4E-01
2E-01
2E-01
1E+01
2E-01
2E-01
1E-01
1E-01
1E-01
2E-01
4E-01
1E-01
1E-01
1E-01
1E-01
2E-01
2E-01
1E-01
1E-01
2E-02
1E-02
9E-02
2E-01
1E-01
1E-01
1E-01
1E-01
3E-01
1E-01
1E-01
1E-01
1E-01
1E-01
9E-02
2E-01
1E-01
1E-01
1E-01
1E-01
1E-01
2E-01
2E-01
2E-01
2E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 38 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Nickel
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
BR-3
BR-3
BR-3
BR-3
BR-4
BR-5
BR-5
BR-5
BR-BFG
BR-BFG
BR-Dillon
BR-Dillon
FG-4
FG-4
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
1121
1121
1140
FG-6
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6B
FG-6B
FG-6C
FG-6C
Sample Date
19-Aug-99
23-Jul-96
05-Sep-99
14-Sep-99
22-Sep-92
22-Sep-92
23-Jul-96
23-Jul-96
22-May-96
25-Oct-95
24-May-96
26-Oct-95
22-Sep-92
21-Sep-89
22-Sep-92
23-Aug-94
04-May-89
21-Oct-93
16-Nov-93
22-Jul-96
ll-Jun-96
23-Aug-94
21-Sep-89
22-Jul-96
16-Nov-93
ll-Jun-96
04-May-89
21-Oct-93
22-Sep-92
13-Jun-96
23-Jul-96
13-Jun-96
ll-Jun-96
21-Sep-89
21-Oct-93
22-Jul-96
ll-Jun-96
04-May-89
23-Aug-94
22-Sep-92
16-Nov-93
23-Aug-94
22-Jul-96
ll-Jun-96
22-Jul-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
5
5
5
5
15
15
5
5
0.5
1
0.5
0.5
0.5
0.1
0.5
0.15
0.1
0.15
0.15
0.1
0.1
0.15
0.1
0.1
0.15
0.1
0.1
0.15
0.5
0.1
0.2
0.1
0.1
0.1
0.15
0.1
0.1
0.3
0.15
2.9
0.15
0.15
0.1
0.1
0.1
Hardness (mg/L)
65
50
63
69
73
72
52
52
59
86
47
66
61
58
62
54
84
66
65
46
37
97
92
64
109
55
97
109
95
215
446
728
1070
656
679
908
722
580
699
440
625
1362
1230
2020
1720
AWQC acute
3.3E+02
2.6E+02
3.2E+02
3.4E+02
3.6E+02
3.5E+02
2.7E+02
2.7E+02
3.0E+02
4.1E+02
2.5E+02
3.3E+02
1.5E+00
1.4E+00
1.5E+00
1.2E+00
2.6E+00
1.7E+00
1.7E+00
9.1E-01
6.4E-01
3.2E+00
3.0E+00
1.6E+00
4.0E+00
1.2E+00
3.3E+00
4.0E+00
3.1E+00
1.3E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
3.0E+01
AWQC chronic
3.6E+01
2.9E+01
3.5E+01
3.8E+01
4.0E+01
3.9E+01
3.0E+01
3.0E+01
3.3E+01
4.6E+01
2.7E+01
3.7E+01
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
HQ acute
2E-02
2E-02
2E-02
1E-02
4E-02
4E-02
2E-02
2E-02
2E-03
2E-03
2E-03
2E-03
3E-01
7E-02
3E-01
1E-01
4E-02
9E-02
9E-02
1E-01
2E-01
5E-02
3E-02
6E-02
4E-02
8E-02
3E-02
4E-02
2E-01
8E-03
7E-03
3E-03
3E-03
3E-03
5E-03
3E-03
3E-03
1E-02
5E-03
1E-01
5E-03
5E-03
3E-03
3E-03
3E-03
HQ chronic
1E-01
2E-01
1E-01
1E-01
4E-01
4E-01
2E-01
2E-01
2E-02
2E-02
2E-02
1E-02
3E-01
6E-02
3E-01
9E-02
6E-02
9E-02
9E-02
6E-02
6E-02
9E-02
6E-02
6E-02
9E-02
6E-02
6E-02
9E-02
3E-01
6E-02
1E-01
6E-02
6E-02
6E-02
9E-02
6E-02
6E-02
2E-01
9E-02
2E+00
9E-02
9E-02
6E-02
6E-02
6E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 39 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
General Location
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Station ID
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
TS-3
TS-4
TS-4
FG-0
FG-0
FG-0
FG-1
FG-1
FG-1
FG-1
FG-1
FG-1
FG-2
FG-2
FG-2
FG-3
FG-3
FG-3
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
Sample Date
21-Oct-93
22-Sep-92
04-May-89
05-Jun-96
16-Nov-93
23-Aug-94
22-Jul-96
25-May-96
ll-Jun-96
23-May-96
25-May-96
06-Jun-96
22-Sep-92
23-May-96
21-Sep-89
04-May-89
22-Sep-92
22-Jul-96
25-Oct-95
12-Jun-96
23-May-96
21-Sep-89
22-Sep-92
04-May-89
12-Jun-96
22-Sep-92
22-Jul-96
23-Aug-94
16-Nov-93
10-Jun-96
22-Sep-92
22-Jul-96
21-Oct-93
18-Jul-96
25-Jun-96
21-Jun-96
26-May-96
16-May-96
16-Jan-97
22-May-96
13-Dec-96
13-Nov-96
21-Feb-97
08-Oct-96
09-Sep-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.15
0.5
0.1
0.5
0.15
0.15
0.1
0.5
0.1
0.5
0.5
0.5
0.5
0.5
0.1
0.1
0.5
0.1
0.5
0.1
0.5
0.1
0.5
0.1
0.1
0.5
0.1
0.15
0.15
0.1
0.5
0.1
0.15
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
Hardness (mg/L)
123
102
200
58
120
93
96
-
68
46
47
53
47
34
58
69
53
41
48
37
34
60
55
67
39
62
46
102
125
65
103
84
121
18
65
62
62
82
140
75
140
120
160
110
110
AWQC acute
4.9E+00
3.6E+00
1.1E+01
1.4E+00
4.7E+00
3.0E+00
3.2E+00
nc
1.8E+00
9.1E-01
9.4E-01
1.2E+00
9.5E-01
5.4E-01
1.4E+00
1.8E+00
1.2E+00
7.3E-01
9.8E-01
6.3E-01
5.4E-01
1.4E+00
1.2E+00
1.7E+00
6.7E-01
1.5E+00
9.2E-01
3.5E+00
5.0E+00
1.6E+00
3.7E+00
2.5E+00
4.8E+00
1.8E-01
1.6E+00
1.5E+00
1.5E+00
2.5E+00
6.2E+00
2.1E+00
6.2E+00
4.7E+00
7.7E+00
4.1E+00
4.1E+00
AWQC chronic
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
HQ acute
3E-02
1E-01
9E-03
4E-01
3E-02
5E-02
3E-02
nc
6E-02
6E-01
5E-01
4E-01
5E-01
9E-01
7E-02
5E-02
4E-01
1E-01
5E-01
2E-01
9E-01
7E-02
4E-01
6E-02
1E-01
3E-01
1E-01
4E-02
3E-02
6E-02
1E-01
4E-02
3E-02
3E+00
3E-01
3E-01
3E-01
2E-01
8E-02
2E-01
8E-02
1E-01
6E-02
1E-01
1E-01
HQ chronic
9E-02
3E-01
6E-02
3E-01
9E-02
9E-02
6E-02
3E-01
6E-02
3E-01
3E-01
3E-01
3E-01
3E-01
6E-02
6E-02
3E-01
6E-02
3E-01
6E-02
3E-01
6E-02
3E-01
6E-02
6E-02
3E-01
6E-02
9E-02
9E-02
6E-02
3E-01
6E-02
9E-02
3E-01
3E-01
3E-01
3E-01
3E-01
3E-01
3E-01
3E-01
3E-01
3E-01
3E-01
3E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 40 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
Silver
General Location
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Discharge
Discharge
Discharge
Discharge
Discharge
Discharge
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-9A
FG-9A
CBMA-1
KDS
KDS
MGB-1
RLCVT-1
WP-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-Adams St
BR-Adams St
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-4
BR-5
Sample Date
15-Aug-96
19-Jan-96
23-Oct-95
21-Nov-95
21-Sep-89
04-May-89
17-Apr-96
21-Mar-96
22-Feb-96
23-Aug-94
22-Jul-96
ll-Jun-96
23-Jul-96
24-Aug-94
13-Jun-96
23-Jul-96
23-Jul-96
12-Jun-96
23-Jul-96
16-Nov-93
04-May-89
21-Sep-89
21-Oct-93
22-Sep-92
10-Jun-96
23-Aug-94
24-Oct-95
21-May-96
16-Nov-93
21-Oct-93
21-Sep-89
04-May-89
10-Jun-96
23-Jul-96
22-Aug-94
22-Sep-92
21-Oct-93
16-Nov-93
10-Jun-96
22-Aug-94
23-Jul-96
21-Sep-89
04-May-89
22-Sep-92
23-Jul-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.5
0.5
0.5
0.5
0.1
0.1
0.5
0.5
0.5
0.15
0.1
0.1
0.2
0.15
0.1
0.2
0.2
1
0.1
0.15
0.1
0.1
0.15
0.5
0.1
0.15
0.5
0.5
0.15
0.15
0.1
0.1
0.1
0.1
0.15
0.5
0.15
0.15
0.1
0.15
0.1
0.1
0.1
0.5
0.1
Hardness (mg/L)
99
150
110
120
102
140
160
140
150
96
85
65
224
222
296
82
86
4980
42
67
67
58
71
66
54
61
68
57
126
121
108
140
58
49
76
102
76
75
54
70
50
68
80
73
52
AWQC acute
3.4E+00
6.9E+00
4.1E+00
4.7E+00
3.6E+00
6.2E+00
7.7E+00
6.2E+00
6.9E+00
3.2E+00
2.6E+00
1.6E+00
1.4E+01
1.4E+01
2.2E+01
2.5E+00
2.7E+00
3.0E+01
7.7E-01
1.7E+00
1.7E+00
1.4E+00
1.9E+00
1.7E+00
1.2E+00
1.5E+00
1.8E+00
1.3E+00
5.1E+00
4.8E+00
3.9E+00
6.2E+00
1.4E+00
l.OE+00
2.2E+00
3.6E+00
2.1E+00
2.1E+00
1.2E+00
1.8E+00
1.1E+00
1.8E+00
2.4E+00
2.0E+00
1.1E+00
AWQC chronic
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
HQ acute
1E-01
7E-02
1E-01
1E-01
3E-02
2E-02
6E-02
8E-02
7E-02
5E-02
4E-02
6E-02
1E-02
1E-02
4E-03
8E-02
8E-02
3E-02
1E-01
9E-02
6E-02
7E-02
8E-02
3E-01
8E-02
1E-01
3E-01
4E-01
3E-02
3E-02
3E-02
2E-02
7E-02
1E-01
7E-02
1E-01
7E-02
7E-02
8E-02
8E-02
1E-01
6E-02
4E-02
2E-01
9E-02
HQ chronic
3E-01
3E-01
3E-01
3E-01
6E-02
6E-02
3E-01
3E-01
3E-01
9E-02
6E-02
6E-02
1E-01
9E-02
6E-02
1E-01
1E-01
6E-01
6E-02
9E-02
6E-02
6E-02
9E-02
3E-01
6E-02
9E-02
3E-01
3E-01
9E-02
9E-02
6E-02
6E-02
6E-02
6E-02
9E-02
3E-01
9E-02
9E-02
6E-02
9E-02
6E-02
6E-02
6E-02
3E-01
6E-02
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 41 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Silver
Silver
Silver
Silver
Silver
Silver
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
Station ID
BR-5
BR-5
BR-BFG
BR-BFG
BR-Dillon
BR-Dillon
FG-4
FG-4
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-5. 5
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
Sample Date
22-Sep-92
23-Jul-96
25-Oct-95
22-May-96
26-Oct-95
24-May-96
22-Sep-92
21-Sep-89
22-Jul-96
ll-Jun-96
16-Nov-93
21-Oct-93
22-Sep-92
22-Sep-98
3-Nov-98
4-May-89
10-Jun-99
14-Jul-99
23-Aug-94
5-Sep-99
8-Oct-99
23-Sep-99
13-Sep-99
19-Aug-99
05-Sep-99
19-Aug-99
5-Sep-99
17-Nov-99
l-Nov-99
7-Oct-99
13-Sep-99
13-Sep-99
23-Sep-99
7-Oct-99
23-Sep-99
10-Jun-99
22-Jul-96
14-Jul-99
23-Aug-94
ll-Jun-96
16-Nov-93
21-Oct-93
22-Sep-92
04-May-89
14-Sep-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
0.5
0.1
0.5
0.5
0.5
0.5
14
5
32.6
23.4
109
27
84
20
40
10
10
30
37
5
80
20
70
10
520
660
520
400
380
450
570
570
490
450
490
300
658.7
500
941
753.5
1479
792
1516
650
540
Hardness (mg/L)
72
52
86
59
66
47
61
58
46
37
65
66
62
-
-
84
—
-
54
52
63
64
60
54
64
65
64
84
82
76
71
71
75
76
75
-
64
-
97
55
109
109
95
97
71
AWQC acute
2.0E+00
1.1E+00
2.7E+00
1.4E+00
1.7E+00
9.4E-01
7.7E+01
7.4E+01
6.1E+01
5.1E+01
8.2E+01
8.2E+01
7.9E+01
nc
nc
l.OE+02
nc
nc
6.9E+01
6.7E+01
7.9E+01
8.0E+01
7.6E+01
7.0E+01
8.0E+01
8.1E+01
8.0E+01
l.OE+02
9.9E+01
9.3E+01
8.8E+01
8.8E+01
9.2E+01
9.3E+01
9.2E+01
nc
8.0E+01
nc
1.1E+02
7.1E+01
1.3E+02
1.3E+02
1.1E+02
1.1E+02
8.8E+01
AWQC chronic
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
1.7E+00
7.7E+01
7.4E+01
6.1E+01
5.1E+01
8.2E+01
8.3E+01
7.9E+01
nc
nc
l.OE+02
nc
nc
7.0E+01
6.8E+01
8.0E+01
8.1E+01
7.7E+01
7.0E+01
8.1E+01
8.2E+01
8.1E+01
l.OE+02
l.OE+02
9.4E+01
8.8E+01
8.8E+01
9.3E+01
9.4E+01
9.3E+01
nc
8.1E+01
nc
1.1E+02
7.1E+01
1.3E+02
1.3E+02
1.1E+02
1.2E+02
8.8E+01
HQ acute
3E-01
9E-02
2E-01
4E-01
3E-01
5E-01
2E-01
7E-02
5E-01
5E-01
1E+00
3E-01
1E+00
nc
nc
1E-01
nc
nc
5E-01
7E-02
1E+00
2E-01
9E-01
1E-01
6E+00
8E+00
6E+00
4E+00
4E+00
5E+00
7E+00
7E+00
5E+00
5E+00
5E+00
nc
8E+00
nc
8E+00
1E+01
1E+01
6E+00
1E+01
6E+00
6E+00
HQ chronic
3E-01
6E-02
3E-01
3E-01
3E-01
3E-01
2E-01
7E-02
5E-01
5E-01
1E+00
3E-01
1E+00
nc
nc
1E-01
nc
nc
5E-01
7E-02
1E+00
2E-01
9E-01
1E-01
6E+00
8E+00
6E+00
4E+00
4E+00
5E+00
6E+00
6E+00
5E+00
5E+00
5E+00
nc
8E+00
nc
8E+00
1E+01
1E+01
6E+00
1E+01
6E+00
6E+00
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 42 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
General Location
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
South Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
Station ID
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
FG-8
1121
1121
1140
FG-6
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6A
FG-6B
FG-6B
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
FG-6C
Sample Date
21-Sep-89
19-Aug-99
05-Sep-99
17-Nov-99
02-Nov-99
08-Oct-99
23-Sep-99
23-Jul-96
13-Jun-96
13-Jun-96
ll-Jun-96
23-Aug-94
ll-Jun-96
21-Oct-93
22-Jul-96
21-Sep-89
04-May-89
16-Nov-93
22-Sep-92
22-Jul-96
23-Aug-94
21-Jun-OO
17-Nov-99
21-Jun-OO
02-Nov-99
13-Apr-OO
07-Apr-99
07-Oct-99
07-May-99
05-Sep-99
19-Aug-99
22-Jul-99
05-Sep-99
14-Jul-99
04-Feb-99
22-Jul-96
ll-Jun-96
05-Sep-99
22-Sep-98
03-Nov-98
13-Sep-99
02-Dec-98
03-Mar-99
23-Sep-99
10-Jun-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
460
550
500
720
660
480
490
50447
18183
83845
129150
63029
86202
69550
102530
7000
49000
60400
41260
149000
173000
105000
129000
100000
125000
117000
111000
126680
123000
123000
88200
110000
123000
99500
126000
244820
298190
123000
125000
132000
129000
130000
116000
128160
27900
Hardness (mg/L)
92
66
66
89
86
73
76
446
215
728
1070
699
722
679
908
656
580
625
440
1230
1362
-
972
-
996
-
-
957
956
882
659
742
882
-
997
1720
2020
882
-
-
839
-
-
1010
-
AWQC acute
1.1E+02
8.2E+01
8.2E+01
1.1E+02
l.OE+02
9.0E+01
9.3E+01
4.2E+02
2.2E+02
4.6E+02
4.6E+02
4.6E+02
4.6E+02
4.6E+02
4.6E+02
4.6E+02
4.6E+02
4.6E+02
4.1E+02
4.6E+02
4.6E+02
nc
4.6E+02
nc
4.6E+02
nc
nc
4.6E+02
4.6E+02
4.6E+02
4.6E+02
4.6E+02
4.6E+02
nc
4.6E+02
4.6E+02
4.6E+02
4.6E+02
nc
nc
4.6E+02
nc
nc
4.6E+02
nc
AWQC chronic
1.1E+02
8.3E+01
8.3E+01
1.1E+02
l.OE+02
9.0E+01
9.4E+01
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
nc
2.2E+02
nc
2.2E+02
nc
nc
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
2.2E+02
nc
2.2E+02
2.2E+02
2.2E+02
2.2E+02
nc
nc
2.2E+02
nc
nc
2.2E+02
nc
HQ acute
4E+00
7E+00
6E+00
7E+00
6E+00
5E+00
5E+00
1E+02
8E+01
2E+02
3E+02
1E+02
2E+02
2E+02
2E+02
2E+01
1E+02
1E+02
1E+02
3E+02
4E+02
nc
3E+02
nc
3E+02
nc
nc
3E+02
3E+02
3E+02
2E+02
2E+02
3E+02
nc
3E+02
5E+02
7E+02
3E+02
nc
nc
3E+02
nc
nc
3E+02
nc
HQ chronic
4E+00
7E+00
6E+00
7E+00
6E+00
5E+00
5E+00
2E+02
8E+01
4E+02
6E+02
3E+02
4E+02
3E+02
5E+02
3E+01
2E+02
3E+02
2E+02
7E+02
8E+02
nc
6E+02
nc
6E+02
nc
nc
6E+02
6E+02
6E+02
4E+02
5E+02
6E+02
nc
6E+02
1E+03
1E+03
6E+02
nc
nc
6E+02
nc
nc
6E+02
nc
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 43 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
General Location
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
North Branch French Gulch
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch Reference
French Gulch
French Gulch
French Gulch
French Gulch
Station ID
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
FG-7
TS-3
TS-4
TS-4
FG-0
FG-0
FG-0
FG-1
FG-1
FG-1
FG-1
FG-1
FG-1
FG-2
FG-2
FG-2
FG-3
FG-3
FG-3
Mcleod Tunnel
FG-9
FG-9
FG-9
FG-9
Sample Date
05-Jun-96
05-Jun-96
04-May-89
25-May-96
23-Aug-94
22-Sep-92
22-Jul-96
ll-Jun-96
16-Nov-93
21-Oct-93
Ol-Nov-99
17-Nov-99
07-Oct-99
23-Sep-99
14-Sep-99
05-Sep-99
19-Aug-99
14-Jul-99
10-Jun-99
10-Jun-99
25-May-96
25-May-96
23-May-96
06-Jun-96
25-May-96
22-Sep-92
21-Sep-89
23-May-96
22-Jul-96
12-Jun-96
22-Sep-92
4-May-89
23-May-96
25-Oct-95
22-Sep-92
21-Sep-89
4-May-89
12-Jun-96
22-Jul-96
22-Sep-92
04-May-89
22-Jul-96
10-Jun-96
16-Nov-93
21-Oct-93
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
1800
1700
9300
1000
2127
2827
4483.6
2681.4
4198
3254
12700
12500
10460
11530
11200
10600
11500
10700
15500
15500
2300
1800
30
1100
1000
4
5
2
19.6
14.6
10
5
8
7
15
5
10
10.4
15.6
13
5
2216.4
2072.8
3337
2872
Hardness (mg/L)
58
58
200
47
93
102
96
68
120
123
203
201
182
201
189
184
196
-
-
-
62
58
46
53
47
47
58
34
41
37
53
69
34
48
55
60
67
39
46
62
160
84
65
125
121
AWQC acute
7.4E+01
7.4E+01
2.1E+02
6.2E+01
1.1E+02
1.2E+02
1.1E+02
8.4E+01
1.4E+02
1.4E+02
2.1E+02
2.1E+02
1.9E+02
2.1E+02
2.0E+02
2.0E+02
2.1E+02
nc
nc
nc
7.8E+01
7.4E+01
6.1E+01
6.8E+01
6.2E+01
6.2E+01
7.4E+01
4.7E+01
5.5E+01
5.1E+01
6.8E+01
8.6E+01
4.7E+01
6.3E+01
7.0E+01
7.6E+01
8.3E+01
5.2E+01
6.1E+01
7.8E+01
1.7E+02
l.OE+02
8.1E+01
1.4E+02
1.4E+02
AWQC chronic
7.4E+01
7.4E+01
2.1E+02
6.2E+01
1.1E+02
1.2E+02
1.1E+02
8.5E+01
1.4E+02
1.4E+02
2.2E+02
2.1E+02
2.0E+02
2.1E+02
2.0E+02
2.0E+02
2.1E+02
nc
nc
nc
7.9E+01
7.4E+01
6.1E+01
6.9E+01
6.2E+01
6.3E+01
7.4E+01
4.7E+01
5.5E+01
5.1E+01
6.9E+01
8.6E+01
4.7E+01
6.3E+01
7.1E+01
7.7E+01
8.4E+01
5.3E+01
6.2E+01
7.8E+01
1.8E+02
l.OE+02
8.2E+01
1.4E+02
1.4E+02
HQ acute
2E+01
2E+01
4E+01
2E+01
2E+01
2E+01
4E+01
3E+01
3E+01
2E+01
6E+01
6E+01
5E+01
5E+01
6E+01
5E+01
6E+01
nc
nc
nc
3E+01
2E+01
5E-01
2E+01
2E+01
6E-02
7E-02
4E-02
4E-01
3E-01
1E-01
6E-02
2E-01
1E-01
2E-01
7E-02
1E-01
2E-01
3E-01
2E-01
3E-02
2E+01
3E+01
2E+01
2E+01
HQ chronic
2E+01
2E+01
4E+01
2E+01
2E+01
2E+01
4E+01
3E+01
3E+01
2E+01
6E+01
6E+01
5E+01
5E+01
6E+01
5E+01
6E+01
nc
nc
nc
3E+01
2E+01
5E-01
2E+01
2E+01
6E-02
7E-02
4E-02
4E-01
3E-01
1E-01
6E-02
2E-01
1E-01
2E-01
7E-02
1E-01
2E-01
3E-01
2E-01
3E-02
2E+01
3E+01
2E+01
2E+01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 44 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
General Location
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
French Gulch
Discharge
Station ID
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9
FG-9A
FG-9A
FG-9A
CBMA-1
Sample Date
22-Sep-92
24-Sep-98
03-Nov-98
07-May-99
10-Jun-99
02-Dec-98
03-Mar-99
04-Feb-99
07-Apr-99
21-Feb-97
04-May-89
17-Apr-96
16-Jan-97
19-Jan-96
23-Aug-94
13-Nov-96
17-Nov-99
02-Nov-99
08-Oct-99
23-Sep-99
13-Sep-99
05-Sep-99
19-Aug-99
14-Jul-99
13-Dec-96
25-Jun-96
23-Oct-95
21-Nov-95
21-Mar-96
16-May-96
15-Aug-96
08-Oct-96
09-Sep-96
26-May-96
18-Jul-96
21-Sep-89
21-Jun-96
21-Jun-OO
13-Apr-OO
22-Feb-96
22-May-96
ll-Jun-96
22-Jul-96
23-Aug-94
23-Jul-96
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
1830
2000
2490
3380
1650
2330
3620
4000
3490
4500
4500
4400
4100
3900
2199
3100
2190
2250
1790
1730
1590
1460
1550
1230
3700
2100
3100
3000
2900
2700
2500
2400
2400
2300
2200
1900
1800
1110
3370
3500
2300
2239.1
3304.1
2304
2796
Hardness (mg/L)
103
-
-
172
—
-
-
175
—
160
140
160
140
150
102
120
113
108
95
102
92
85
87
-
140
65
110
120
140
82
99
110
110
62
18
102
62
-
-
150
75
65
85
96
224
AWQC acute
1.2E+02
nc
nc
1.9E+02
nc
nc
nc
1.9E+02
nc
1.7E+02
1.6E+02
1.7E+02
1.6E+02
1.7E+02
1.2E+02
1.4E+02
1.3E+02
1.3E+02
1.1E+02
1.2E+02
1.1E+02
l.OE+02
l.OE+02
nc
1.6E+02
8.1E+01
1.3E+02
1.4E+02
1.6E+02
9.9E+01
1.2E+02
1.3E+02
1.3E+02
7.8E+01
2.7E+01
1.2E+02
7.8E+01
nc
nc
1.7E+02
9.2E+01
8.1E+01
l.OE+02
1.1E+02
2.3E+02
AWQC chronic
1.2E+02
nc
nc
1.9E+02
nc
nc
nc
1.9E+02
nc
1.8E+02
1.6E+02
1.8E+02
1.6E+02
1.7E+02
1.2E+02
1.4E+02
1.3E+02
1.3E+02
1.1E+02
1.2E+02
1.1E+02
l.OE+02
l.OE+02
nc
1.6E+02
8.2E+01
1.3E+02
1.4E+02
1.6E+02
l.OE+02
1.2E+02
1.3E+02
1.3E+02
7.9E+01
2.8E+01
1.2E+02
7.9E+01
nc
nc
1.7E+02
9.3E+01
8.2E+01
l.OE+02
1.1E+02
2.2E+02
HQ acute
2E+01
nc
nc
2E+01
nc
nc
nc
2E+01
nc
3E+01
3E+01
3E+01
3E+01
2E+01
2E+01
2E+01
2E+01
2E+01
2E+01
1E+01
1E+01
1E+01
1E+01
nc
2E+01
3E+01
2E+01
2E+01
2E+01
3E+01
2E+01
2E+01
2E+01
3E+01
8E+01
2E+01
2E+01
nc
nc
2E+01
3E+01
3E+01
3E+01
2E+01
1E+01
HQ chronic
2E+01
nc
nc
2E+01
nc
nc
nc
2E+01
nc
3E+01
3E+01
3E+01
3E+01
2E+01
2E+01
2E+01
2E+01
2E+01
2E+01
1E+01
1E+01
1E+01
1E+01
nc
2E+01
3E+01
2E+01
2E+01
2E+01
3E+01
2E+01
2E+01
2E+01
3E+01
8E+01
2E+01
2E+01
nc
nc
2E+01
2E+01
3E+01
3E+01
2E+01
1E+01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 45 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
General Location
Discharge
Discharge
Discharge
Discharge
Discharge
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Station ID
KDS
KDS
MGB-1
RLCVT-1
WP-1
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
654
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
655
Sample Date
13-Jun-96
24-Aug-94
23-Jul-96
23-Jul-96
12-Jun-96
09-Sep-98
23-Sep-98
Ol-Jul-98
16-May-97
10-Sep-97
07-Aug-98
22-Jul-98
10-Oct-97
19-Nov-97
21-Aug-98
07-Dec-97
Ol-Apr-98
05-May-98
24-Sep-97
08-May-97
4-Jun-97
18-Jun-97
2-Jul-97
16-Jul-97
21-Aug-97
2-Sep-97
24-Apr-97
21-May-97
21-Aug-98
9-Sep-98
7-Aug-98
10-Oct-97
22-Jul-98
16-May-97
10-Sep-97
7-Dec-97
24-Sep-97
2-Sep-97
21-Aug-97
16-Jul-97
2-Jul-97
18-Jun-97
21-May-97
8-May-97
24-Apr-97
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ND Adj Cone
10460
4051
1537
2012
3105000
5
5
5
5
5
5
5
5
5
5
5
5
10
5
5
5
5
5
5
5
5
5
5
11
5
5
12
10
42
5
16
15
11
11
5
5
16
39
51
38
Hardness (mg/L)
296
222
82
86
4980
-
-
-
72
60
-
-
72
96
-
84
100
76
56
78
62
60
40
60
52
56
86
66
50
-
48
60
58
62
44
-
52
52
44
44
42
52
60
74
84
AWQC acute
2.9E+02
2.3E+02
9.9E+01
l.OE+02
4.6E+02
nc
nc
nc
8.9E+01
7.6E+01
nc
nc
8.9E+01
1.1E+02
nc
l.OE+02
1.2E+02
9.3E+01
7.2E+01
9.5E+01
7.8E+01
7.6E+01
5.4E+01
7.6E+01
6.7E+01
7.2E+01
l.OE+02
8.2E+01
6.5E+01
nc
6.3E+01
7.6E+01
7.4E+01
7.8E+01
5.8E+01
nc
6.7E+01
6.7E+01
5.8E+01
5.8E+01
5.6E+01
6.7E+01
7.6E+01
9.1E+01
l.OE+02
AWQC chronic
2.2E+02
2.2E+02
l.OE+02
l.OE+02
2.2E+02
nc
nc
nc
8.9E+01
7.7E+01
nc
nc
8.9E+01
1.1E+02
nc
l.OE+02
1.2E+02
9.4E+01
7.2E+01
9.6E+01
7.9E+01
7.7E+01
5.4E+01
7.7E+01
6.8E+01
7.2E+01
l.OE+02
8.3E+01
6.6E+01
nc
6.3E+01
7.7E+01
7.4E+01
7.9E+01
5.9E+01
nc
6.8E+01
6.8E+01
5.9E+01
5.9E+01
5.7E+01
6.8E+01
7.7E+01
9.2E+01
l.OE+02
HQ acute
4E+01
2E+01
2E+01
2E+01
7E+03
nc
nc
nc
6E-02
7E-02
nc
nc
6E-02
4E-02
nc
5E-02
4E-02
1E-01
7E-02
5E-02
6E-02
7E-02
9E-02
7E-02
7E-02
7E-02
5E-02
6E-02
2E-01
nc
8E-02
2E-01
1E-01
5E-01
9E-02
nc
2E-01
2E-01
2E-01
9E-02
9E-02
2E-01
5E-01
6E-01
4E-01
HQ chronic
5E+01
2E+01
2E+01
2E+01
1E+04
nc
nc
nc
6E-02
7E-02
nc
nc
6E-02
4E-02
nc
5E-02
4E-02
1E-01
7E-02
5E-02
6E-02
7E-02
9E-02
7E-02
7E-02
7E-02
5E-02
6E-02
2E-01
nc
8E-02
2E-01
1E-01
5E-01
8E-02
nc
2E-01
2E-01
2E-01
8E-02
9E-02
2E-01
5E-01
6E-01
4E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 46 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
General Location
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River Reference
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
655
655
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-1
BR-Adams St
BR-Adams St
643
643
643
643
656
656
656
656
656
656
656
656
656
656
656
656
656
Sample Date
l-Jul-98
4-Jun-97
23-Sep-99
17-Nov-99
17-Nov-99
Ol-Nov-99
23-Sep-99
14-Sep-99
05-Sep-99
19-Aug-99
14-Jul-99
10-Jun-99
10-Jun-99
05-May-99
23-Aug-94
23-Jul-96
10-Jun-96
07-Oct-99
22-Sep-92
16-Nov-93
23-Sep-98
3-Nov-98
2-Dec-98
4-May-89
21-Sep-89
21-Oct-93
24-Oct-95
21-May-96
09-Sep-98
21-Aug-98
22-Jul-98
28-Dec-99
21-May-97
8-May-97
2-Sep-97
16-Jul-97
2-Jul-97
18-Jun-97
4-Jun-97
24-Apr-97
16-May-97
23-Sep-98
24-Sep-97
10-Oct-97
19-Nov-97
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ND Adj Cone
10
27
20
20
20
20
10
20
10
10
10
20
20
20
7
8.8
12.4
30
11
23
10
20
20
60
5
22
29
22
202
190
245
213
635
1280
506
313
326
432
596
1970
686
1405
1086
1488
3320
Hardness (mg/L)
—
54
71
69
70
71
72
63
60
61
-
-
—
95
61
42
54
71
66
67
—
-
-
67
58
71
68
57
—
-
-
-
68
106
64
-
44
58
60
124
80
94
76
100
128
AWQC acute
nc
7.0E+01
8.8E+01
8.6E+01
8.7E+01
8.8E+01
8.9E+01
7.9E+01
7.6E+01
7.7E+01
nc
nc
nc
1.1E+02
7.7E+01
5.6E+01
7.0E+01
8.8E+01
8.2E+01
8.3E+01
nc
nc
nc
8.3E+01
7.4E+01
8.7E+01
8.5E+01
7.3E+01
nc
nc
nc
nc
8.5E+01
1.2E+02
8.0E+01
nc
5.8E+01
7.4E+01
7.6E+01
1.4E+02
9.7E+01
1.1E+02
9.3E+01
1.2E+02
1.4E+02
AWQC chronic
nc
7.0E+01
8.8E+01
8.6E+01
8.7E+01
8.8E+01
8.9E+01
8.0E+01
7.7E+01
7.8E+01
nc
nc
nc
1.1E+02
7.8E+01
5.6E+01
7.0E+01
8.8E+01
8.3E+01
8.4E+01
nc
nc
nc
8.4E+01
7.4E+01
8.8E+01
8.5E+01
7.3E+01
nc
nc
nc
nc
8.5E+01
1.2E+02
8.1E+01
nc
5.9E+01
7.4E+01
7.7E+01
1.4E+02
9.8E+01
1.1E+02
9.4E+01
1.2E+02
1.5E+02
HQ acute
nc
4E-01
2E-01
2E-01
2E-01
2E-01
1E-01
3E-01
1E-01
1E-01
nc
nc
nc
2E-01
9E-02
2E-01
2E-01
3E-01
1E-01
3E-01
nc
nc
nc
7E-01
7E-02
3E-01
3E-01
3E-01
nc
nc
nc
nc
8E+00
1E+01
6E+00
nc
6E+00
6E+00
8E+00
1E+01
7E+00
1E+01
1E+01
1E+01
2E+01
HQ chronic
nc
4E-01
2E-01
2E-01
2E-01
2E-01
1E-01
3E-01
1E-01
1E-01
nc
nc
nc
2E-01
9E-02
2E-01
2E-01
3E-01
1E-01
3E-01
nc
nc
nc
7E-01
7E-02
3E-01
3E-01
3E-01
nc
nc
nc
nc
7E+00
1E+01
6E+00
nc
6E+00
6E+00
8E+00
1E+01
7E+00
1E+01
1E+01
1E+01
2E+01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 47 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
656
656
656
656
656
656
656
656
656
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
657
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
Sample Date
7-Dec-97
l-Apr-98
5-May-98
l-Jul-98
22-Jul-98
7-Aug-98
9-Sep-98
10-Sep-97
21-Aug-98
19-Nov-97
l-Apr-98
5-May-98
18-Jun-97
2-Jul-97
23-Sep-98
24-Apr-97
8-May-97
7-Dec-97
21-May-97
16-Jul-97
21-Aug-97
2-Sep-97
21-Aug-98
4-Jun-97
9-Sep-98
24-Sep-97
7-Aug-98
22-Jul-98
l-Jul-98
16-May-97
03-Mar-99
04-Feb-99
07-Apr-99
07-Apr-99
04-May-89
21-Sep-89
23-Sep-98
19-Aug-99
17-Nov-99
02-Nov-99
07-Oct-99
23-Sep-99
14-Sep-99
02-Dec-98
05-Sep-99
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/1
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
3400
3780
2094
717
1008
479
1229
944
1033
99
103
134
176
122
115
122
121
201
197
113
103
114
93
170
93
146
89
100
79
124
3340
4070
3460
3500
4200
1700
1610
830
1660
2230
1210
1290
1490
2360
1180
Hardness (mg/L)
136
164
120
-
78
-
90
76
—
68
84
76
54
46
-
88
78
68
64
48
52
64
-
58
—
72
-
-
—
72
-
174
—
-
140
108
—
75
103
108
91
93
89
-
81
AWQC acute
1.5E+02
1.8E+02
1.4E+02
nc
9.5E+01
nc
1.1E+02
9.3E+01
nc
8.5E+01
l.OE+02
9.3E+01
7.0E+01
6.1E+01
nc
1.1E+02
9.5E+01
8.5E+01
8.0E+01
6.3E+01
6.7E+01
8.0E+01
nc
7.4E+01
nc
8.9E+01
nc
nc
nc
8.9E+01
nc
1.9E+02
nc
nc
1.6E+02
1.3E+02
nc
9.2E+01
1.2E+02
1.3E+02
1.1E+02
1.1E+02
1.1E+02
nc
9.8E+01
AWQC chronic
1.5E+02
1.8E+02
1.4E+02
nc
9.6E+01
nc
1.1E+02
9.4E+01
nc
8.5E+01
l.OE+02
9.4E+01
7.0E+01
6.1E+01
nc
1.1E+02
9.6E+01
8.5E+01
8.1E+01
6.3E+01
6.8E+01
8.1E+01
nc
7.4E+01
nc
8.9E+01
nc
nc
nc
8.9E+01
nc
1.9E+02
nc
nc
1.6E+02
1.3E+02
nc
9.3E+01
1.2E+02
1.3E+02
1.1E+02
1.1E+02
1.1E+02
nc
9.9E+01
HQ acute
2E+01
2E+01
2E+01
nc
1E+01
nc
1E+01
1E+01
nc
1E+00
1E+00
1E+00
3E+00
2E+00
nc
1E+00
1E+00
2E+00
2E+00
2E+00
2E+00
1E+00
nc
2E+00
nc
2E+00
nc
nc
nc
1E+00
nc
2E+01
nc
nc
3E+01
1E+01
nc
9E+00
1E+01
2E+01
1E+01
1E+01
1E+01
nc
1E+01
HQ chronic
2E+01
2E+01
2E+01
nc
1E+01
nc
1E+01
1E+01
nc
1E+00
1E+00
1E+00
3E+00
2E+00
nc
1E+00
1E+00
2E+00
2E+00
2E+00
2E+00
1E+00
nc
2E+00
nc
2E+00
nc
nc
nc
1E+00
nc
2E+01
nc
nc
3E+01
1E+01
nc
9E+00
1E+01
2E+01
1E+01
1E+01
1E+01
nc
1E+01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 48 of 49
-------
Appendix G
Risk Calculations for Aquatic Receptors from Direct Contact with Surface Water
COPCs
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
Zinc
General Location
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Blue River
Station ID
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-2
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-3
BR-4
BR-5
BR-5
BR-5
BR-BFG
BR-BFG
BR-Dillon
BR-Dillon
Sample Date
03-Nov-98
14-Jul-99
10-Jun-99
5-May-99
22-Aug-94
23-Jul-96
10-Jun-96
16-Nov-93
21-Oct-93
22-Sep-92
14-Sep-99
04-Feb-99
07-Apr-99
04-May-89
21-Sep-89
16-Nov-93
21-Oct-93
23-Sep-98
3-Nov-98
2-Dec-98
3-Mar-99
23-Jul-96
22-Aug-94
17-Nov-99
10-Jun-96
l-Nov-99
7-Oct-99
7-Oct-99
23-Sep-99
14-Sep-99
5-Sep-99
19-Aug-99
14-Jul-99
10-Jun-99
5-May-99
22-Sep-92
23-Jul-96
23-Jul-96
22-Sep-92
25-Oct-95
22-May-96
24-May-96
26-Oct-95
Analysis Type
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Dissolved
Adj Units
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ND Adj Cone
2040
330
520
3410
590
376.7
589.4
2946
3077
1887
1480
100
70
80
50
60
71
110
80
70
70
131.2
70
80
242.7
90
110
100
120
110
110
130
100
170
90
53
99
98.7
31
1500
540
120
69
Hardness (mg/L)
—
-
-
159
76
49
58
126
121
102
88
85
—
80
68
75
76
-
-
-
—
50
70
70
54
74
73
60
72
69
63
65
—
-
89
73
52
52
72
86
59
47
66
AWQC acute
nc
nc
nc
1.7E+02
9.3E+01
6.4E+01
7.4E+01
1.4E+02
1.4E+02
1.2E+02
1.1E+02
l.OE+02
nc
9.7E+01
8.5E+01
9.1E+01
9.3E+01
nc
nc
nc
nc
6.5E+01
8.6E+01
8.7E+01
7.0E+01
9.1E+01
9.0E+01
7.6E+01
8.9E+01
8.6E+01
7.9E+01
8.1E+01
nc
nc
1.1E+02
9.0E+01
6.7E+01
6.8E+01
8.9E+01
l.OE+02
7.5E+01
6.2E+01
8.2E+01
AWQC chronic
nc
nc
nc
1.7E+02
9.4E+01
6.4E+01
7.4E+01
1.4E+02
1.4E+02
1.2E+02
1.1E+02
l.OE+02
nc
9.8E+01
8.5E+01
9.2E+01
9.3E+01
nc
nc
nc
nc
6.6E+01
8.7E+01
8.7E+01
7.0E+01
9.2E+01
9.0E+01
7.7E+01
8.9E+01
8.6E+01
8.0E+01
8.2E+01
nc
nc
1.1E+02
9.0E+01
6.7E+01
6.8E+01
8.9E+01
l.OE+02
7.6E+01
6.2E+01
8.3E+01
HQ acute
nc
nc
nc
2E+01
6E+00
6E+00
8E+00
2E+01
2E+01
2E+01
1E+01
1E+00
nc
8E-01
6E-01
7E-01
8E-01
nc
nc
nc
nc
2E+00
8E-01
9E-01
3E+00
1E+00
1E+00
1E+00
1E+00
1E+00
1E+00
2E+00
nc
nc
8E-01
6E-01
1E+00
1E+00
4E-01
1E+01
7E+00
2E+00
8E-01
HQ chronic
nc
nc
nc
2E+01
6E+00
6E+00
8E+00
2E+01
2E+01
2E+01
1E+01
1E+00
nc
8E-01
6E-01
7E-01
8E-01
nc
nc
nc
nc
2E+00
8E-01
9E-01
3E+00
1E+00
1E+00
1E+00
1E+00
1E+00
1E+00
2E+00
nc
nc
8E-01
6E-01
1E+00
1E+00
3E-01
1E+01
7E+00
2E+00
8E-01
Revised Aquatic Risk_SW wo Discharge: SW Diss Cone & HQs
Page 49 of 49
-------
Appendix G
Hazard Quotients for the Mink from Ingestion of Fish
Reach
Blue River
Reference
Blue River
COPCs
Arsenic
Cadmium
Copper
Lead
Manganese
Zinc
Arsenic
Cadmium
Copper
Lead
Manganese
Zinc
Fish Ingestion
Fish EPC
(mg/kg ww)
3.1E-01
3.2E-02
2.3E+00
1.3E-02
2.9E-01
2.4E+00
8.7E-03
2.2E-01
7.5E-01
1.7E-02
9.5E-02
3.2E+00
Dose (mg/kg
BW/day)
5.0E-02
5.2E-03
3.7E-01
2.2E-03
4.7E-02
3.8E-01
1.4E-03
3.5E-02
1.2E-01
2.8E-03
1.5E-02
5.2E-01
TRV (mg/kg BW/day)
NOAEL
1.5E-01
5.0E-01
8.8E+00
3.1E-01
1.8E+01
3.1E+02
1.5E-01
5.0E-01
8.8E+00
3.1E-01
1.8E+01
3.1E+02
LOAEL
4.5E-01
9.9E-01
1.3E+01
6.1E-01
5.7E+01
9.3E+02
4.5E-01
9.9E-01
1.3E+01
6.1E-01
5.7E+01
9.3E+02
HQ
NOAEL
3E-01
1E-02
4E-02
7E-03
3E-03
1E-03
9E-03
7E-02
1E-02
9E-03
9E-04
2E-03
LOAEL
1E-01
5E-03
3E-02
4E-03
8E-04
4E-04
3E-03
4E-02
9E-03
5E-03
3E-04
6E-04
Notes:
Dose = [Cone x Ingestion Rate] / BW
na = not available
NC = HQ can not be calculated
Wildlife Risk_Fish rev: Mink_Fish
5/8/2002
Page 1 of 1
-------
Appendix G
Hazard Quotients for the Great Blue Heron from Ingestion of Fish
Reach
Blue River
Reference
Blue River
COPCs
Arsenic
Cadmium
Copper
Lead
Manganese
Zinc
Arsenic
Cadmium
Copper
Lead
Manganese
Zinc
Fish Ingestion
Fish EPC
(mg/kg ww)
3.1E-01
3.2E-02
2.3E+00
1.3E-02
2.9E-01
2.4E+00
8.7E-03
2.2E-01
7.5E-01
1.7E-02
9.5E-02
3.2E+00
Dose (mg/kg
BW/day)
5.5E-02
5.7E-03
4.0E-01
2.4E-03
5.2E-02
4.2E-01
1.5E-03
3.9E-02
1.3E-01
3.0E-03
1.7E-02
5.7E-01
TRV (mg/kg BW/day)
NOAEL
8.1E-01
8.7E-02
4.0E+00
8.8E-01
6.5E+01
2.6E+01
8.1E-01
8.7E-02
4.0E+00
8.8E-01
6.5E+01
2.6E+01
LOAEL
7.1E+00
2.4E+00
6.0E+00
1.8E+00
2.0E+02
7.9E+01
7.1E+00
2.4E+00
6.0E+00
1.8E+00
2.0E+02
7.9E+01
HQ
NOAEL
7E-02
7E-02
1E-01
3E-03
8E-04
2E-02
2E-03
4E-01
3E-02
3E-03
3E-04
2E-02
LOAEL
8E-03
2E-03
7E-02
1E-03
3E-04
5E-03
2E-04
2E-02
2E-02
2E-03
9E-05
7E-03
Notes:
Dose = [Cone x Ingestion Rate] / BW
na = not available
NC = HQ can not be calculated
Wildlife Risk_Fish rev: GBH_Fish
5/8/2002
Page 1 of 1
-------
Appendix G
Hazard Quotients for the Mink from Incidental Ingestion of Sediment
Reach
French Gulch
Reference
North Branch
French Gulch
South Branch
French Gulch
French Gulch
Blue River
Blue River
Reference
COPCs
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Sediment Ingestion
Sed EPC
(mg/kg)
8.0E+04
6.2E+01
6.1E+00
5.4E+01
6.6E+01
3.8E+02
1.3E+03
2.7E-01
6.0E+00
2.0E+00
7.8E+02
6.6E+04
1.8E+02
2.1E+02
4.0E+01
4.9E+02
6.5E+03
1.2E+04
3.5E-01
1.6E+01
2.3E+00
3.5E+04
na
1.7E+02
1.1E+02
na
na
3.4E+03
na
na
na
na
2.0E+04
7.3E+04
1.2E+02
8.2E+01
5.3E+01
3.2E+02
2.3E+03
9.1E+03
2.9E-01
l.OE+01
2.1E+00
1.8E+04
8.3E+04
2.4E+01
1.5E+01
8.2E+01
1.1E+02
6.4E+02
1.6E+03
2.5E-01
7.0E+00
1.1E+00
3.0E+03
7.8E+04
1.3E+01
2.8E+00
6.3E+01
4.5E+01
1.6E+02
1.3E+03
l.OE-01
5.0E+00
4.0E-01
6.0E+02
Dose (mg/kg
BW/day)
2.8E+01
2.2E-02
2.1E-03
1.9E-02
2.3E-02
1.3E-01
4.6E-01
9.5E-05
2.1E-03
7.0E-04
2.7E-01
2.3E+01
6.3E-02
7.4E-02
1.4E-02
1.7E-01
2.3E+00
4.2E+00
1.2E-04
5.6E-03
8.1E-04
1.2E+01
na
6.0E-02
3.8E-02
na
na
1.2E+00
na
na
na
na
6.9E+00
2.6E+01
4.2E-02
2.9E-02
1.9E-02
1.1E-01
8.1E-01
3.2E+00
l.OE-04
3.5E-03
7.4E-04
6.3E+00
2.9E+01
8.5E-03
5.3E-03
2.9E-02
3.9E-02
2.3E-01
5.6E-01
8.8E-05
2.5E-03
3.9E-04
1.1E+00
2.7E+01
4.6E-03
9.9E-04
2.2E-02
1.6E-02
5.6E-02
4.6E-01
3.5E-05
1.8E-03
1.4E-04
2.1E-01
TRY (mg/kg BW/day)
NOAEL
2.3E+00
1.5E-01
5.0E-01
8.0E+02
8.8E+00
3.1E-01
1.8E+01
1.4E+00
1.1E-02
7.9E-02
3.1E+02
2.3E+00
1.5E-01
5.0E-01
8.0E+02
8.8E+00
3.1E-01
1.8E+01
1.4E+00
1.1E-02
7.9E-02
3.1E+02
2.3E+00
1.5E-01
5.0E-01
8.0E+02
8.8E+00
3.1E-01
1.8E+01
1.4E+00
1.1E-02
7.9E-02
3.1E+02
2.3E+00
1.5E-01
5.0E-01
8.0E+02
8.8E+00
3.1E-01
1.8E+01
1.4E+00
1.1E-02
7.9E-02
3.1E+02
2.3E+00
1.5E-01
5.0E-01
8.0E+02
8.8E+00
3.1E-01
1.8E+01
1.4E+00
1.1E-02
7.9E-02
3.1E+02
2.3E+00
1.5E-01
5.0E-01
8.0E+02
8.8E+00
3.1E-01
1.8E+01
1.4E+00
1.1E-02
7.9E-02
3.1E+02
LOAEL
1.1E+01
4.5E-01
9.9E-01
2.4E+03
1.3E+01
6.1E-01
5.7E+01
4.1E+00
2.6E-01
1.3E-01
9.3E+02
1.1E+01
4.5E-01
9.9E-01
2.4E+03
1.3E+01
6.1E-01
5.7E+01
4.1E+00
2.6E-01
1.3E-01
9.3E+02
1.1E+01
4.5E-01
9.9E-01
2.4E+03
1.3E+01
6.1E-01
5.7E+01
4.1E+00
2.6E-01
1.3E-01
9.3E+02
1.1E+01
4.5E-01
9.9E-01
2.4E+03
1.3E+01
6.1E-01
5.7E+01
4.1E+00
2.6E-01
1.3E-01
9.3E+02
1.1E+01
4.5E-01
9.9E-01
2.4E+03
1.3E+01
6.1E-01
5.7E+01
4.1E+00
2.6E-01
1.3E-01
9.3E+02
1.1E+01
4.5E-01
9.9E-01
2.4E+03
1.3E+01
6.1E-01
5.7E+01
4.1E+00
2.6E-01
1.3E-01
9.3E+02
HQ
NOAEL
1E+01
1E-01
4E-03
2E-05
3E-03
4E-01
3E-02
7E-05
2E-01
9E-03
9E-04
1E+01
4E-01
1E-01
2E-05
2E-02
7E+00
2E-01
9E-05
5E-01
1E-02
4E-02
NC
4E-01
8E-02
NC
NC
4E+00
NC
NC
NC
NC
2E-02
1E+01
3E-01
6E-02
2E-05
1E-02
3E+00
2E-01
7E-05
3E-01
9E-03
2E-02
1E+01
6E-02
1E-02
4E-05
4E-03
7E-01
3E-02
6E-05
2E-01
5E-03
3E-03
1E+01
3E-02
2E-03
3E-05
2E-03
2E-01
3E-02
3E-05
2E-01
2E-03
7E-04
LOAEL
3E+00
5E-02
2E-03
8E-06
2E-03
2E-01
8E-03
2E-05
8E-03
5E-03
3E-04
2E+00
1E-01
7E-02
6E-06
1E-02
4E+00
7E-02
3E-05
2E-02
6E-03
1E-02
NC
1E-01
4E-02
NC
NC
2E+00
NC
NC
NC
NC
7E-03
2E+00
9E-02
3E-02
8E-06
9E-03
1E+00
6E-02
2E-05
1E-02
6E-03
7E-03
3E+00
2E-02
5E-03
1E-05
3E-03
4E-01
1E-02
2E-05
9E-03
3E-03
1E-03
2E+00
1E-02
1E-03
9E-06
1E-03
9E-02
8E-03
9E-06
7E-03
1E-03
2E-04
Notes:
Dose = [Cone x Ingestion Rate] / BW
na = not available
NC = HQ can not be calculated
Wildlife Risk_Sed rev: Mink_Sed
5/8/2002
Page 1 of 1
-------
Appendix G
Hazard Quotients for the Great Blue Heron from Incidental Ingestion of Sediment
Reach
French Gulch
Reference
North Branch
French Gulch
South Branch
French Gulch
French Gulch
Blue River
Blue River
Reference
COPCs
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Aluminum
Arsenic
Cadmium
Chromium
Copper
Lead
Manganese
Mercury
Molybdenum
Selenium
Zinc
Sediment Ingestion
Sed EPC
(mg/kg)
8.0E+04
6.2E+01
6.1E+00
5.4E+01
6.6E+01
3.8E+02
1.3E+03
2.7E-01
6.0E+00
2.0E+00
7.8E+02
6.6E+04
1.8E+02
2.1E+02
4.0E+01
4.9E+02
6.5E+03
1.2E+04
3.5E-01
1.6E+01
2.3E+00
3.5E+04
na
1.7E+02
1.1E+02
na
na
3.4E+03
na
na
na
na
2.0E+04
7.3E+04
1.2E+02
8.2E+01
5.3E+01
3.2E+02
2.3E+03
9.1E+03
2.9E-01
l.OE+01
2.1E+00
1.8E+04
8.3E+04
2.4E+01
1.5E+01
8.2E+01
1.1E+02
6.4E+02
1.6E+03
2.5E-01
7.0E+00
1.1E+00
3.0E+03
7.8E+04
1.3E+01
2.8E+00
6.3E+01
4.5E+01
1.6E+02
1.3E+03
l.OE-01
5.0E+00
4.0E-01
6.0E+02
Dose (mg/kg
BW/day)
3.4E+01
2.6E-02
2.6E-03
2.3E-02
2.8E-02
1.6E-01
5.5E-01
1.1E-04
2.5E-03
8.4E-04
3.3E-01
2.8E+01
7.6E-02
8.9E-02
1.7E-02
2.1E-01
2.7E+00
5.1E+00
1.5E-04
6.8E-03
9.7E-04
1.5E+01
na
7.2E-02
4.5E-02
na
na
1.4E+00
na
na
na
na
8.3E+00
3.1E+01
5.1E-02
3.5E-02
2.2E-02
1.4E-01
9.7E-01
3.8E+00
1.2E-04
4.2E-03
8.9E-04
7.6E+00
3.5E+01
l.OE-02
6.3E-03
3.5E-02
4.6E-02
2.7E-01
6.8E-01
1.1E-04
3.0E-03
4.6E-04
1.3E+00
3.3E+01
5.5E-03
1.2E-03
2.7E-02
1.9E-02
6.8E-02
5.5E-01
4.2E-05
2.1E-03
1.7E-04
2.5E-01
TRY (mg/kg BW/day)
NOAEL
3.5E+01
8.1E-01
8.7E-02
2.0E-01
4.0E+00
8.8E-01
6.5E+01
9.0E-02
2.4E+00
l.OE-01
2.6E+01
3.5E+01
8.1E-01
8.7E-02
2.0E-01
4.0E+00
8.8E-01
6.5E+01
9.0E-02
2.4E+00
l.OE-01
2.6E+01
3.5E+01
8.1E-01
8.7E-02
2.0E-01
4.0E+00
8.8E-01
6.5E+01
9.0E-02
2.4E+00
l.OE-01
2.6E+01
3.5E+01
8.1E-01
8.7E-02
2.0E-01
4.0E+00
8.8E-01
6.5E+01
9.0E-02
2.4E+00
l.OE-01
2.6E+01
3.5E+01
8.1E-01
8.7E-02
2.0E-01
4.0E+00
8.8E-01
6.5E+01
9.0E-02
2.4E+00
l.OE-01
2.6E+01
3.5E+01
8.1E-01
8.7E-02
2.0E-01
4.0E+00
8.8E-01
6.5E+01
9.0E-02
2.4E+00
l.OE-01
2.6E+01
LOAEL
1.8E+02
7.1E+00
2.4E+00
l.OE+00
6.0E+00
1.8E+00
2.0E+02
1.8E-01
7.1E+00
2.0E-01
7.9E+01
1.8E+02
7.1E+00
2.4E+00
l.OE+00
6.0E+00
1.8E+00
2.0E+02
1.8E-01
7.1E+00
2.0E-01
7.9E+01
1.8E+02
7.1E+00
2.4E+00
l.OE+00
6.0E+00
1.8E+00
2.0E+02
1.8E-01
7.1E+00
2.0E-01
7.9E+01
1.8E+02
7.1E+00
2.4E+00
l.OE+00
6.0E+00
1.8E+00
2.0E+02
1.8E-01
7.1E+00
2.0E-01
7.9E+01
1.8E+02
7.1E+00
2.4E+00
l.OE+00
6.0E+00
1.8E+00
2.0E+02
1.8E-01
7.1E+00
2.0E-01
7.9E+01
1.8E+02
7.1E+00
2.4E+00
l.OE+00
6.0E+00
1.8E+00
2.0E+02
1.8E-01
7.1E+00
2.0E-01
7.9E+01
HQ
NOAEL
1E+00
3E-02
3E-02
1E-01
7E-03
2E-01
8E-03
1E-03
1E-03
8E-03
1E-02
8E-01
9E-02
1E+00
8E-02
5E-02
3E+00
8E-02
2E-03
3E-03
1E-02
6E-01
NC
9E-02
5E-01
NC
NC
2E+00
NC
NC
NC
NC
3E-01
9E-01
6E-02
4E-01
1E-01
3E-02
1E+00
6E-02
1E-03
2E-03
9E-03
3E-01
1E+00
1E-02
7E-02
2E-01
1E-02
3E-01
1E-02
1E-03
1E-03
5E-03
5E-02
9E-01
7E-03
1E-02
1E-01
5E-03
8E-02
8E-03
5E-04
9E-04
2E-03
1E-02
LOAEL
2E-01
4E-03
1E-03
2E-02
5E-03
9E-02
3E-03
6E-04
4E-04
4E-03
4E-03
2E-01
1E-02
4E-02
2E-02
3E-02
2E+00
3E-02
8E-04
1E-03
5E-03
2E-01
NC
1E-02
2E-02
NC
NC
8E-01
NC
NC
NC
NC
1E-01
2E-01
7E-03
1E-02
2E-02
2E-02
6E-01
2E-02
7E-04
6E-04
4E-03
1E-01
2E-01
1E-03
3E-03
3E-02
8E-03
2E-01
3E-03
6E-04
4E-04
2E-03
2E-02
2E-01
8E-04
5E-04
3E-02
3E-03
4E-02
3E-03
2E-04
3E-04
8E-04
3E-03
Notes:
Dose = [Cone x Ingestion Rate] / BW
na = not available
NC = HQ can not be calculated
Wildlife Risk_Sed rev: GBH_Sed
5/8/2002
Page 1 of 1
-------
Appendix G
Hazard Quotients for the Mink from Ingestion of Surface Water
Reach
French Gulch
Reference
Discharge
North Branch
French Gulch
South Branch
French Gulch
French Gulch
Blue River
Blue River
Reference
COPCs
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Surface Water Ingestion
SWEPC
(mg/L)
3.6E-01
4.2E-04
6.4E-03
2.0E-01
l.OE-04
9.5E-02
1.1E+02
2.3E+01
5.5E+00
1.3E+03
4.0E-01
3.5E+03
4.6E-01
8.7E-02
4.6E-01
7.5E+01
l.OE-04
1.8E+02
2.5E-02
2.8E-03
2.9E-03
6.1E-02
na
2.4E+00
1.4E-01
6.3E-03
l.OE-02
7.4E-01
na
2.5E+00
2.2E-01
2.2E-03
5.3E-03
7.7E-02
na
1.1E+00
1.8E-01
1.6E-04
l.OE-03
2.2E-02
na
2.4E-02
Dose (mg/kg
BW/day)
3.7E-02
4.4E-05
6.7E-04
2.1E-02
l.OE-05
l.OE-02
1.2E+01
2.4E+00
5.8E-01
1.3E+02
4.2E-02
3.7E+02
4.9E-02
9.2E-03
4.9E-02
7.8E+00
l.OE-05
1.9E+01
2.6E-03
2.9E-04
3.0E-04
6.4E-03
na
2.5E-01
1.5E-02
6.7E-04
1.1E-03
7.7E-02
na
2.7E-01
2.3E-02
2.3E-04
5.5E-04
8.1E-03
na
1.1E-01
1.9E-02
1.7E-05
1.1E-04
2.3E-03
na
2.5E-03
TRY (mg/kg BW/day)
NOAEL
1.1E+00
1.7E-01
1.6E-01
8.8E+00
6.9E-01
1.6E+02
1.1E+00
1.7E-01
1.6E-01
8.8E+00
6.9E-01
1.6E+02
1.1E+00
1.7E-01
1.6E-01
8.8E+00
6.9E-01
1.6E+02
1.1E+00
1.7E-01
1.6E-01
8.8E+00
6.9E-01
1.6E+02
1.1E+00
1.7E-01
1.6E-01
8.8E+00
6.9E-01
1.6E+02
1.1E+00
1.7E-01
1.6E-01
8.8E+00
6.9E-01
1.6E+02
1.1E+00
1.7E-01
1.6E-01
8.8E+00
6.9E-01
1.6E+02
LOAEL
5.5E+00
5.0E-01
3.1E-01
2.8E+01
2.1E+00
4.7E+02
5.5E+00
5.0E-01
3.1E-01
2.8E+01
2.1E+00
4.7E+02
5.5E+00
5.0E-01
3.1E-01
2.8E+01
2.1E+00
4.7E+02
5.5E+00
5.0E-01
3.1E-01
2.8E+01
2.1E+00
4.7E+02
5.5E+00
5.0E-01
3.1E-01
2.8E+01
2.1E+00
4.7E+02
5.5E+00
5.0E-01
3.1E-01
2.8E+01
2.1E+00
4.7E+02
5.5E+00
5.0E-01
3.1E-01
2.8E+01
2.1E+00
4.7E+02
HQ
NOAEL
3E-02
3E-04
4E-03
2E-03
2E-05
6E-05
1E+01
1E+01
4E+00
2E+01
6E-02
2E+00
4E-02
5E-02
3E-01
9E-01
2E-05
1E-01
2E-03
2E-03
2E-03
7E-04
NC
2E-03
1E-02
4E-03
7E-03
9E-03
NC
2E-03
2E-02
1E-03
4E-03
9E-04
NC
7E-04
2E-02
1E-04
7E-04
3E-04
NC
2E-05
LOAEL
7E-03
9E-05
2E-03
7E-04
5E-06
2E-05
2E+00
5E+00
2E+00
5E+00
2E-02
8E-01
9E-03
2E-02
2E-01
3E-01
5E-06
4E-02
5E-04
6E-04
1E-03
2E-04
NC
5E-04
3E-03
1E-03
4E-03
3E-03
NC
6E-04
4E-03
5E-04
2E-03
3E-04
NC
2E-04
4E-03
3E-05
3E-04
8E-05
NC
5E-06
Notes:
Dose = [Cone x Ingestion Rate] / BW
na = not available
NC = HQ can not be calculated
Wildlife Risk_SWrev: Mink_SW
5/8/2002
Page 1 of 1
-------
Appendix G
Hazard Quotients for the Great Blue Heron from Ingestion of Surface Water
Reach
French Gulch
Reference
Discharge
North Branch
French Gulch
South Branch
French Gulch
French Gulch
Blue River
Blue River
Reference
COPCs
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Aluminum
Cadmium
Lead
Manganese
Mercury
Zinc
Surface Water Ingestion
SWEPC
(mg/L)
3.6E-01
4.2E-04
6.4E-03
2.0E-01
l.OE-04
9.5E-02
1.1E+02
2.3E+01
5.5E+00
1.3E+03
4.0E-01
3.5E+03
4.6E-01
8.7E-02
4.6E-01
7.5E+01
l.OE-04
1.8E+02
2.5E-02
2.8E-03
2.9E-03
6.1E-02
na
2.4E+00
1.4E-01
6.3E-03
l.OE-02
7.4E-01
na
2.5E+00
2.2E-01
2.2E-03
5.3E-03
7.7E-02
na
1.1E+00
1.8E-01
1.6E-04
l.OE-03
2.2E-02
na
2.4E-02
Dose (mg/kg
BW/day)
1.6E-02
1.9E-05
2.8E-04
8.8E-03
4.5E-06
4.2E-03
5.1E+00
l.OE+00
2.4E-01
5.7E+01
1.8E-02
1.6E+02
2.1E-02
3.9E-03
2.1E-02
3.3E+00
4.5E-06
7.9E+00
1.1E-03
1.3E-04
1.3E-04
2.7E-03
na
1.1E-01
6.2E-03
2.8E-04
4.6E-04
3.3E-02
na
1.1E-01
9.9E-03
9.9E-05
2.3E-04
3.4E-03
na
4.8E-02
8.2E-03
7.2E-06
4.5E-05
9.9E-04
na
1.1E-03
TRY (mg/kg BW/day)
NOAEL
1.8E+01
4.3E-02
4.4E-01
3.3E+01
4.5E-02
1.3E+01
1.8E+01
4.3E-02
4.4E-01
3.3E+01
4.5E-02
1.3E+01
1.8E+01
4.3E-02
4.4E-01
3.3E+01
4.5E-02
1.3E+01
1.8E+01
4.3E-02
4.4E-01
3.3E+01
4.5E-02
1.3E+01
1.8E+01
4.3E-02
4.4E-01
3.3E+01
4.5E-02
1.3E+01
1.8E+01
4.3E-02
4.4E-01
3.3E+01
4.5E-02
1.3E+01
1.8E+01
4.3E-02
4.4E-01
3.3E+01
4.5E-02
1.3E+01
LOAEL
8.8E+01
1.2E+00
8.8E-01
9.8E+01
9.0E-02
3.9E+01
8.8E+01
1.2E+00
8.8E-01
9.8E+01
9.0E-02
3.9E+01
8.8E+01
1.2E+00
8.8E-01
9.8E+01
9.0E-02
3.9E+01
8.8E+01
1.2E+00
8.8E-01
9.8E+01
9.0E-02
3.9E+01
8.8E+01
1.2E+00
8.8E-01
9.8E+01
9.0E-02
3.9E+01
8.8E+01
1.2E+00
8.8E-01
9.8E+01
9.0E-02
3.9E+01
8.8E+01
1.2E+00
8.8E-01
9.8E+01
9.0E-02
3.9E+01
HQ
NOAEL
9E-04
4E-04
6E-04
3E-04
1E-04
3E-04
3E-01
2E+01
6E-01
2E+00
4E-01
1E+01
1E-03
9E-02
5E-02
1E-01
1E-04
6E-01
6E-05
3E-03
3E-04
8E-05
NC
8E-03
4E-04
7E-03
1E-03
1E-03
NC
9E-03
6E-04
2E-03
5E-04
1E-04
NC
4E-03
5E-04
2E-04
1E-04
3E-05
NC
8E-05
LOAEL
2E-04
2E-05
3E-04
9E-05
5E-05
1E-04
6E-02
8E-01
3E-01
6E-01
2E-01
4E+00
2E-04
3E-03
2E-02
3E-02
5E-05
2E-01
IE-OS
1E-04
1E-04
3E-05
NC
3E-03
7E-05
2E-04
5E-04
3E-04
NC
3E-03
1E-04
8E-05
3E-04
4E-05
NC
1E-03
9E-05
6E-06
5E-05
IE-OS
NC
3E-05
Notes:
Dose = [Cone x Ingestion Rate] / BW
na = not available
NC = HQ can not be calculated
Wildlife Risk_SWrev: GBH_SW
5/8/2002
Page 1 of 1
------- |