FOURTH-YEAR REVIEW REPORT FOR
MASON CITY COAL GASIFICATION PLANT SUPERFUND SITE
CERRO GORDO COUNTY, IOWA
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Prepared by
U.S. Environmental Protection Agency
Region 7
Lenexa, Kansas
Digitally signed by ROBERT
ROBERTJURGENS JURGENS
Date: 2023.04.05 11:53:09 -05'00'
Robert D. Jurgens, Director
Superfund and Emergency Management Division
30821142
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Table of Contents
LIST 01 ABBREVIATIONS & ACRONYMS iii
I. INTRODUCTION 1
FIVE-YEAR REVIEW SUMMARY FORM 3
II. RESPONSE ACTION SUMMARY 3
Basis for Taking Action 3
Response Actions 6
Status of Implementation 8
IC Summary Table 8
Systems Operations/Operation & Maintenance 9
III. PROGRESS SINCE THE LAST REVIEW 10
IV. FIVE-YEAR REVIEW PROCESS 11
Community Notification and Involvement 11
Data Review 11
Site Inspection 16
V. TECHNICAL ASSESSMENT 16
QUESTION A: Is the remedy functioning as intended by the decision documents? 16
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels, and RAOs used
at the time of the remedy selection still valid? 18
QUESTION C: Has any other information come to light that could call into question the
protectiveness of the remedy? 20
VI. ISSUES/RECOMMENDATIONS 20
OTHER FINDINGS 21
VII. PROTECTIVENESS STATEMENT 22
VIII. NEXT REVIEW 22
FIGURE 1: Site Area
FIGURE 2: Site Layout
FIGURES 3-1 Through 3-4: Water Table Aquifer Potentiometric Contours
FIGURE 4: Willow Creek Sampling Locations Site Inspection Photos (34)
APPENDIX A - LIST OF DOCUMENTS REVIEWED
APPENDIX B - GROUNDWATER SAMPLING RESULTS AND STATISTICAL TRENDS TABLES
APPENDIX C - SITE INSPECTION FORM
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LIST OF ABBREVIATIONS & ACRONYMS
AOC
Administrative Order on Consent
BTEX
Benzene, Toluene, Ethylbenzene and Xylenes
CFR
Code of Federal Regulations
CD
Consent Decree
COCs
Contaminants of Concern
DNAPL
Dense Nonaqueous Phase Liquid
EPA
United States Environmental Protection Agency
ESD
Explanation of Significant Differences
ESVs
Ecological Screening Values
FYR
Five-Year Review
ICs
Institutional Controls
IPL
Interstate Power and Light Company
IDNR
Iowa Department of Natural Resources
KCP&L
Kansas City Power and Light
MCL
Maximum Contaminant Level
MNA
Monitored Natural Attenuation
NPL
National Priorities List
OU
Operable Unit
O&M
Operation and Maintenance
OLS
Ordinary Least Squares
ORC®
Oxygen Release Compound®
PAH
Polynuclear Aromatic Hydrocarbon
PRP
Potentially Responsible Party
PEC
Probable Effect Concentration
RME
Reasonable Maximum Exposure
RSL
Regional Screening Level
RAOs
Remedial Action Objectives
RI/FS
Remedial Investigation/Feasibility Study
ROD
Record of Decision
TEC
Thresholds Effect Concentration
VOC
Volatile Organic Compound
l-ig/kg
Microgram per Kilogram
^g/L
Microgram per Liter
111
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I. INTRODUCTION
The purpose of a five-year review (FYR) is to evaluate the implementation and performance of a remedy
to determine whether the remedy is and will continue to be protective of human health and the
environment. The methods, findings and conclusions of reviews are documented in FYR reports such as
this one. In addition, FYR reports identify issues found during the review, if any, and document
recommendations to address them.
The U.S. Environmental Protection Agency (EPA) is preparing this FYR report pursuant to the
Comprehensive Environmental Response, Compensation, and Liability Act Section 121, consistent with
the National Oil and Hazardous Substances Pollution Contingency Plan (40 CFR Section
300.430(f)(4)(ii)) and considering EPA policy.
This is the fourth FYR for the Mason City Coal Gasification Plant Superfund Site. The triggering action
for this statutory review is the completion date of the previous FYR on April 3, 2018. The FYR has been
prepared because hazardous substances, pollutants or contaminants remain at the Site above levels that
allow for unlimited use and unrestricted exposure. The Site consists of one operable unit, OUOl, that
will be addressed in this FYR.
The Mason City Coal Gasification Plant Superfund Site FYR was led by Amer Safadi, Remedial Project
Manager with the EPA. Participants included Andrew Jennings, EPA hydrogeologist; Ann Jacobs, EPA
human health risk assessor; Venessa Madden, EPA ecological risk assessor; Pamela Houston, EPA
community engagement specialist; Daniel Lyskowski, EPA attorney, and Matt Culp, Iowa Department
of Natural Resources, or IDNR. The review began on April 3, 2022; Jill Stevens, Senior Manager-
Strategic Projects, Alliant Energy Corporation, and Randy Kroneman, Contractor at Stantec were
notified of the initiation of the FYR on that date. Appendix A is a list of documents reviewed during this
FYR.
Site Background
The Site is located near the center of Mason City, Iowa. Beginning in the early 1900's, the site was the
location of a manufactured gas plant which generated "town gas" for lighting and heating purposes in
the Mason City area. Following the availability of natural gas, the plant was decommissioned and
subsequently demolished. Residues from the gas manufacturing processes, commonly referred to as coal
tar, were left on-site and resulted in soil and groundwater contamination. The Site is bounded on three
sides by city streets: South Pennsylvania Avenue to the east, 5th Street Southeast to the south, and South
Delaware Avenue to the west. The northern edge of the site is bounded by a concrete retaining wall that
forms the southern boundary of Willow Creek. Surface water from the site flows into Willow Creek.
The level of Willow Creek is controlled by a low-head dam at the downstream boundary of the site
where South Pennsylvania Avenue passes over the creek. The dam is typically in the down position but
can be raised and lowered by city personnel. Willow Creek enters the Winnebago River approximately
2.25 miles downstream from the site. The Winnebago River is used for recreational fishing. Figure 1 is a
map showing the location of the Site. Figure 2 shows the site layout and the location of all monitoring
wells.
The majority of the site is owned by Interstate Power and Light Company (IPL), a subsidiary of Alliant
Energy Corporation. A narrow strip of land on the north side of the site, adjacent to the Willow Creek
retaining wall, is owned by the city of Mason City and is the location of a sanitary sewer line. The site is
fenced and is accessible through a locked gate. It is approximately two acres in size and is vacant except
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for a power substation that occupies the southwest portion of the site and a small garage on the western
edge of the site. IPL sometimes parks vehicles or stores equipment on the property. The public does not
have access to the site.
The north and south boundaries of Willow Creek are concrete retaining walls in the vicinity of the site.
On the opposite side of Willow Creek, to the north of the site, is a small city park. The property directly
to the west of the site is a vacant gravel lot. The other surrounding properties are retail businesses and
residences. It is possible that there will be further commercial and residential development in areas
outside of the site. Groundwater impacted by the site is not being used. Residents are connected to a
municipal water supply.
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FIVE-YEAR REVIEW SUMMARY FORM
SITE IDENTIFICATION
Site Name: Mason City Coal Gasification Plant
EPA ID: IAD980969190
Region: 7
NPL Status: Final
State: IA
City/County: Mason City/Cerro Gordo
SITE STATUS
Multiple OUs?
No
Has the site achieved construction completion?
Yes
Lead agency: EPA
[If "Other Federal Agency", enter Agency name]'.
Author name (Federal or State Project Manager): Amer Safadi
Author affiliation: EPA
Review period: 4/3/2022 - 4/3/2023
Date of site inspection: 7/6/2022
Type of review: Statutory
Review number: 4
Triggering action date: 4/3/2018
Due date (fiveyears after triggering action date): 4/3/2023
II. RESPONSE ACTION SUMMARY
Basis for Taking Action
The baseline risk assessment was prepared prior to completion of a non-time-critical removal action to
address contaminated soil and source material. Both were conducted in 1994. The contaminants of
concern (COCs) are listed, by media, in Table A. They are categorized as volatile organic compounds
(VOCs), polynuclear aromatic hydrocarbons (PAHs), and metals.
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Table A
Contaminants of Concern by Media
Baseline Risk Assessment
Groundwater
Soil
Willow Creek Sediment
Willow Creek
Surface Water
VOCs
Benzene
Benzene
Bromodichloromethane
Vinyl chloride
Ethylbenzene
Toluene
Xylenes
\ o n-ca rc i n o«en ic P. \ 11 s
Naphthalene
Naphthalene
Acenaphthylene
Acenaphthylene
Acenaphthene
Phenanthrene
Fluorene
Fluorene
Phenanthrene
Pyrene
Anthracene
Benzo(g,h,i)perylene
Fluoranthene
Pyrene
Benzo(g,h,i)perylene
Carcinogenic PA lis
B enzo(k)fl uoranthene
Benzo(k)fluoranthene
13enzo(kjiluoranlhene
Benzol a)an ill racene
B enzo( a)anthracene
B enzo( a)anthracene
B enzo( a)anthracene
Chrysene
Chrysene
Chrysene
Benzo(b)fluoranthene
Benzo(b)fluoranthene
Benzo(b)fluoranthene
Benzo(a)pyrene
Benzo(a)pyrene
Benzo(a)pyrene
lndeno( 1,2,3 -cd)pyrene
Indeno( 1,2,3 -cd)pyrene
Indeno( 1,2,3 -cd)pyrene
Dihenzfa. h )a nth ra cen c
Dihenzfa.h (anthracene
Dibenzfa.h (anthracene
Phcnanlhivnc
M dills
Lead
Lead
Arsenic
Source: Record of Decision 2001
Four "reasonable maximum exposure" (RME) scenarios were developed during the baseline human
health risk assessment.
RME Scenario 1
Current land use for a child trespasser on the site who is also a recreational user of Willow Creek:
• Ingestion of contaminants in surface soil, subsurface soil (trenches), the waste pile and Willow
Creek sediment.
• Inhalation of contaminants in surface soil, subsurface soil (trenches) and the waste pile.
• Dermal absorption of contaminants in surface soil, subsurface soil (trenches) and the waste pile.
RME Scenario 2
Current land use for an on-site worker (adult) who is also a recreational user of Willow Creek:
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• Ingestion of contaminants in surface soil and Willow Creek sediment.
• Inhalation of contaminants from surface soil.
• Dermal absorption of contaminants in surface soil.
• Ingestion of fish from Willow Creek.
RME Scenario 3
Future land use for a child trespasser on the site who is also an off-site resident and recreational user of
Willow Creek:
• Ingestion of contaminants in surface soil, subsurface soil (trenches), the waste pile, Willow
Creek sediment and groundwater.
• Inhalation of contaminants in surface soil, subsurface soil (trenches), the waste pile and
groundwater.
• Dermal absorption of contaminants in surface soil, subsurface soil (trenches), the waste pile and
groundwater.
RME Scenario 4
Future on-site construction worker (adult) who is also an off-site resident and recreational user of
Willow Creek:
• Ingestion of contaminants in surface soil, subsurface soil, the waste pile, Willow Creek sediment
and groundwater.
• Inhalation of contaminants in surface soil, subsurface soil, the waste pile, and groundwater.
• Dermal absorption of contaminants in surface soil, subsurface soil, the waste pile, and
groundwater
• Ingestion of fish from Willow Creek.
The non-time critical removal action involved excavation and thermal treatment of contaminated soil
and a waste pile. Following completion of the removal action, the only exposure pathways which
continued to pose potential risks, were those involving exposure to groundwater, sediment, and
consumption of fish from Willow Creek. The risk levels were recalculated for each RME scenario for
the post-removal exposure pathways. At the time the remedy was selected, RME Scenarios 1,3, and 4
presented unacceptable levels of cancer risk, and none of the RME Scenarios presented an unacceptable
level of noncancer health effects. Table B shows a comparison of the pre- and post-removal action
cancer risk levels.
Table B
Excess Cancer Risks for RME Scenarios
rmi:
hv-RemoN al
Posi-RemoN al
Cancer Risk
Cancer Risk
Scenario 1
7.2 x 10"3
1.3 x 10"6
Scenario 2
7.4 x 10"6
1.1 x 10"7
Scenario 3
8.9 x 10"3
1.7 x 10"3
Scenario 4
8.0 x 10"3
8.0 x 10"3
The baseline risk assessment also included an ecological risk assessment. Potential ecological risks were
identified for organisms living in Willow Creek. The uncertainties of any such risks were considered
high due to the limited amount of data collected from the creek, the number of off-site sources of the
same contaminants that could be entering Willow Creek on a continuing basis via runoff, and storm
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sewers emptying into the creek upstream of the site. The concentrations of PAHs were higher adjacent
to the site than upstream, and significantly higher near the sewer outfall at South Pennsylvania Avenue.
It was speculated that the impacts at the sewer outfall might be due to upstream sources flowing into the
creek through the sewer. Also, the sewer crosses the site in areas of soil contamination which may be
contributing to the creek impacts. However, it was determined that no further ecological assessment
would be conducted, and no ecological targets were identified.
Response Actions
In 1986, following the discovery of coal tar during the installation of a sewer line, IPL entered into an
Administrative Order on Consent (AOC) and conducted three phases of field investigation and
preliminary assessment of the site. In 1991, IPL entered into a second AOC with the EPA to conduct a
remedial investigation and feasibility study (RI/FS). The RI was conducted in phases and concluded in
September 1994. The FS was completed in November 1994 and an addendum to the FS was completed
in July 2000. The site was placed on the National Priorities List (NPL) in December 1994.
Following completion of the RI/FS, a decision was made by the EPA that a non-time-critical removal
action should be performed to address the contaminated soil and waste pile, which were source
materials. A Removal Action Decision Document was signed by the EPA on March 20, 1995. In June
1995, IPL; Kansas City Power & Light Company (KCP&L); the city of Mason City, Iowa; Bob
McKiness Grading & Excavating, Inc.; and the EPA entered a AOC to conduct a removal action.
The removal actions implemented at the site included the following:
• Excavation and off-site treatment by thermal desorption of 21,000 tons of soil and waste pile
materials to below industrial/commercial use risk-based cleanup levels.
• Placement of treated soil back into the area of excavation.
• Groundwater monitoring.
The removal action was completed in 1996. Areas were identified in the subsurface where the levels of
contamination exceeded the cleanup levels, but the soil was inaccessible for excavation. These areas
were near the base of the power substation, beneath the sewer line that traverses the site, and beneath
some subsurface concrete structures in the northwest corner of the site. Semi-annual groundwater
monitoring was conducted for two years following completion of the soil removal to assess the impact
of the removal of the source material on groundwater contamination levels and to evaluate the potential
for intrinsic biodegradation of the contaminants in groundwater.
The EPA issued a Proposed Plan on July 19, 2000. The Record of Decision (ROD) was signed on
September 19, 2000. The remedial action objectives (RAOs) were:
• Prevent exposure to groundwater containing contaminants that represent an unacceptable risk to
human health or the environment.
• Limit or prevent the migration of the contaminated groundwater plume.
• Restore the groundwater to drinking water quality.
• Maintain site conditions which prevent exposure to residual soil contaminants that could pose an
unacceptable risk to human health or the environment.
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The action levels for groundwater listed below in Table C were determined based upon the following
hierarchy: (1) the maximum contaminant level (MCL) pursuant to the Safe Drinking Water Act; (2) for
contaminants without an MCL, the action levels were calculated based on an excess lifetime cancer risk
of lxlO"6; and (3) when the calculated risk-based action level was below the laboratory detection limit,
the detection limit was used as the action level, provided it fell within the acceptable cancer risk range of
lxlO"4 to lxlO"6. There are MCLs for two of the COCs at this site, benzene and benzo(a)pyrene. The
action levels for the other contaminants were developed using the process described and the resulting
action levels represented lifetime excess cancer risks of lxlO"5 to 8xl0"5, which are within the acceptable
cancer risk range and are protective of human health.
On September 3, 2008, an Explanation of Significant Differences (ESD) was signed which modified the
ROD. The modifications made included changing the groundwater action level for
dibenz(a,h)anthracene from 0.3 |ig/L to 0.033|ig/L; adding naphthalene and 2-methylnaphthalene as
COCs in groundwater and establishing action levels of 1.4 |ig/L for naphthalene and 63 |ig/L for 2-
methylnaphthalene; and adding limitations to the institutional controls (ICs) to prevent exposure to
potential vapor intrusion into buildings. The ESD changed the groundwater Action levels for COCs in
Table C but did not change them for the other COCs, which remained unchanged in the ROD.
Table C
Groundwater Action Levels
in micrograms per liter (jig/L)
Conuiminanl
Action 1 ,c\ els
Benzene
5.0
Benzo(a)pyrene
0.2
B enzo(k)fluoranthene
0.2
Benzo(a)anthracene
0.1
Chrysene
0.2
Benzo(b)fluoranthene
0.2
Indeno( 1,2,3 -cd)pyrene
0.4
Dib enz(a, h)anthracene
0.033
2-Methylnapthalene
63
Naphthalene
1.4
Source: Base Line Risk Assessment
Specific soil cleanup criteria were not established in the ROD because the removal action had eliminated
exposure to soil exceeding the threshold for carcinogenic risk or noncarcinogenic health effects,
provided the property is not used for residential purposes.
The selected remedy is monitored natural attenuation (MNA) of groundwater with ICs. A contingency
remedy was selected to be prepared if the monitoring data indicated MNA of groundwater was no longer
effective in remediating the groundwater contaminants at the site. The contingency remedy is
groundwater pumping and treatment with discharge to the sanitary sewer and implementation of ICs.
The ICs identified in the ROD were:
• The placement of restrictions on the site, including no residential development; no basements in
any buildings constructed on the site; and no water supply wells for municipal, industrial, or
domestic purposes.
• An environmental easement providing the EPA access to the site.
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• Continued listing of the site on the Registry of Hazardous Waste or Hazardous Substance
Disposal sites pursuant to Iowa Administrative Code 455B.426.
Status of Implementation
On July 29, 2002, IPL and KCP&L entered a Consent Decree (CD) with the United States, agreeing to
perform the remedial design and remedial action. The remedial design was approved by the EPA on
January 8, 2003.
The major components of the remedial action, as stated in the ROD, include the following:
• Implementation of an IC in the form of restrictions on the site property which will prohibit future
residential development; prohibit the construction of basements in any nonresidential buildings
which might be constructed on the site in the future; and prohibit the installation of any water
supply wells on the site which might be used for municipal, industrial, or domestic purposes.
• Continued listing of the site on the Registry of Hazardous Waste or Hazardous Substance
Disposal sites pursuant to Iowa Administrative Code 455B.426.
• The development and implementation of a groundwater monitoring and maintenance plan;
groundwater monitoring to be conducted at least twice per year for the first five years and no less
than annually until the cleanup levels have been met.
The ROD and CD state that the EPA will consider natural attenuation to be occurring at this site in an
acceptable manner and rate if:
• An examination of the groundwater chemistry identifies conditions that are favorable for the
occurrence of biodegradation.
• A reduction in the concentrations of PAHs and benzene, toluene, ethylbenzene and xylenes
(BTEX) along the flow path downgradient of the former source area occurs.
• Monitoring and modeling results indicate that natural attenuation is occurring at a rate sufficient
to prevent the spread of the contaminant plume.
If these conditions are not being met, the contingency remedy would be implemented.
A Declaration of Restrictive Covenants for the site was recorded on August 27, 2003, but was later
terminated and replaced by the Environmental Covenants listed in Table D. The site was listed on the
Iowa Registry of Hazardous Waste or Hazardous Substance Disposal Sites, but in 2017, IDNR removed
the site due to implementation of the Environmental Covenants. The ICs past and present have been
implemented in accordance with the ROD.
IC Summary Table D
Medi;i (h;il do mil support
h.ised on ciirivnl
conditions
ICs
ICs
Ke(|iiired
Impiieled
IC
Tilled!'IC
Instrument ;ind
Diile Implemented
Needed
b\ Decision
Documents
Piireells)
()h.jeeli\e
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Soil and groundwater
Yes
Yes
Site property
owned by
the Interstate
Power and
Light
Restrict installation of
groundwater wells and
groundwater use; restrict
residential use; and
prevent potential vapor
intrusion.
Environmental
Covenant, Doc. #
2008-7559,
10/23/2008
Soil and groundwater
Yes
Yes
Site property
owned by
the city
Mason City
Restrict installation of
groundwater wells and
groundwater use; restrict
residential use; and
prevent potential vapor
intrusion.
Environmental
Covenant, Doc. #
2009-2974,
4/24/2009
'Unrestricted Use/Unlimited Exposure
Systems Operations/Operation & Maintenance
Groundwater monitoring began in March 2003 and was conducted quarterly through 2007. Since 2008,
groundwater monitoring has been conducted annually in September of each year and the results reported
in annual progress reports. Annual progress reports for 2018 through 2021 have been reviewed for this
FYR. These reports include a summary of all field activities conducted at the site during the year and all
groundwater monitoring data since the beginning of the remedial action, as well as one round of
groundwater monitoring data collected prior to the removal of the contaminated soil and source material.
Collection of MNA parameters and natural attenuation modeling was discontinued in 2013 when it was
demonstrated that the concentrations of contaminants along the flow path had decreased to such low
levels that they limited the predictive capability of the model. Contaminant concentration trends are
analyzed statistically using ordinary least squares (OLS) regression analysis, and the Mann-Kendall and
Theil-Sen tests. The most recent results of these analyses will be discussed later in the Data Review
section of this report. See Figures 3-1 through 3-4 for Water Table Contours, and Appendix B for
Groundwater Sampling Results Tables.
Dense non-aqueous phase liquid (DNAPL) has been found in MW-38 since its installation in 1999. The
DNAPL associated with the site is composed primarily of PAHs and is residual coal tar. Since 2003,
DNAPL has been removed from MW-38 periodically by manually bailing it from the well and
accumulating it for disposal. In March 2012, an automatic DNAPL recovery system began operation in
MW-39, with the pump operating one minute per week to minimize the amount of water in the DNAPL
storage tank and in the conveyance lines. DNAPL removal is not directly addressed in the ROD, but the
ROD does state that the presence of DNAPL may be considered a principal threat waste and can be a
trigger for a Technical Impracticability (TI) waiver, which is currently being considered.
The site has been mowed and foliage has been trimmed/removed to maintain safe and ready access to
the on-site monitoring wells during this FYR period. Six new monitoring wells (MW-40, MW-41,
MW-42, MW-43, MW-44 & MW-45) were installed between 2019 and 2021 to delineate the extent of
benzene contamination in the intermediate zone. One DNAPL extraction well (MW-46) was installed in
the intermediate zone (Stantec, 2022). Monitoring wells MW-6 and MW-8 were replaced due to damage
and corrosion with MW-6R and MW-8R, respectively as recommend during the last FYR (Stantec,
2019). In 2018 and 2019, monitoring wells MW-13 and MW-36 were unable to be inspected due to
construction-related activities on site. The 2020 site inspection was able to inspect these wells, and they
were found in good repair. In the September 2021 annual site inspection, the following issues were
noted:
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• Monitoring wells MW-4, MW-9, and MW-10 only have one bolt securing their lids.
• MW-22 concrete patch is beginning to weather along the edges, but the concrete near the well
vault is still intact and secure.
• MW-36 is approximately four inches below grade due to surface build up. Concrete pad and
well vault are still in good condition.
Exceedances of the groundwater performance standards associated with the 2021 annual monitoring
were noted only at MW-42 and MW-43. At MW-42, benzene exceeded the groundwater performance
standard of 5 jag/1 with a concentration of 102 j_ig/l, and at a concentration of 15,400 j_ig/l at MW-43.
Reported PAH concentrations in the intermediate zone in excess of groundwater performance standards
included naphthalene at MW-42 and benzo(a)anthracene, benzo(b)pyrene, benzo(b)fluoranthene,
benzo(k)fluoranthene, chrysene, dibenzo(a,h)anthracene, 2-methynaphthalene, and naphthalene at MW-
43. No groundwater performance standard exceedances occurred at MW-8R, MW-10, MW-41, MW-
44, or MW-45.
III. PROGRESS SINCE THE LAST REVIEW
This section includes Tables El and E2, which include the protectiveness determinations and statements
from the most recent FYR as well as the recommendations from the most recent FYR and the current
status of those recommendations.
Table El: Protectiveness Determinations/Statements from the 2018 FYR
ou#
Protectiveness
Determination
Protectiveness Statement
OU1
Deferred
- Cannot be made until further information is obtained.
Further information will be obtained by sampling
Willow Creek to determine if the site is impacting
sediment and receptors in this area.
Sitewide
Deferred
- Cannot be made until further information is obtained.
Further information will be obtained by sampling
Willow Creek to determine if the site is impacting
sediment and receptors in this area.
Table E2: Status of Recommendations from the 2018 FYR
OU
#
Issue
Recommendations
Current
Status
Current Implementation
Status Description*
Completion
Date (if
applicable)
OU1
Uncertain
whether
groundwater has
contaminated
sediment in
Willow Creek.
Conduct sampling
in Willow Creek
Completed
Completed - From 2018
Through 2021 Sampling
Events.
2021
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OU1
MW-6 and MW-
8 are corroded at
the joints in the
wells.
abandon and
replace MW-6 and
MW-8.
Completed
Completed - October 23-25,
2018
October 2018
OU1
Extent of
intermediate
zone benzene
contamination
has not been
delineated.
develop and
execute plan to
delineate the
extent of benzene
contamination in
the intermediate
zone.
Completed
Completed 2018-2021
2021
IV. FIVE-YEAR REVIEW PROCESS
Community Notification and Involvement
A public notice was made available by a display ad in the Globe Gazette newspaper on April 2023
stating that a FYR was taking place and inviting the public to submit any comments to the EPA.
No comments were received. The results of the review and the report will be made available to the
public using the following link:
https://usepa.sharepoint.com/sites/OSWER Work/SFCEF/Lists/DraftSiteContent/CEF.aspx?SiteID=070
0337
Data Review
Since the last FYR dated April 3, 2018, four years of annual groundwater sampling for COCs has been
conducted at the site during the fall of each year (2018-2021). Along with groundwater sampling,
general site maintenance and well replacement has occurred as needed. Five new intermediate zone
aquifer monitoring wells and one DNAPL extraction well were installed and are detailed below. During
each annual sampling event, groundwater elevations were collected from existing monitoring wells and
from three locations along Willow Creek to determine the direction of groundwater flow.
During this FYR period, groundwater direction typically flowed from the southwest onto the site, where
it was diverted by a retaining wall along the northern site boundary and then an easterly flow.
Groundwater flow is influenced at the water table by the water level in Willow Creek, which is
controlled by the position of the low-head dam at the downstream boundary of the site. The dam only
has two positions, up and down. The dam has been down during all sampling events occurring in this
FYR period. As of October 2021, eight monitoring wells were screened and sampled for analysis in the
water table aquifer. Additionally, eight monitoring wells were screened and sampled for analysis in the
intermediate zone aquifer. Two DNAPL extraction wells were installed in the intermediate zone and one
monitoring well was screened in the shallow bedrock. Remaining monitoring wells on site were not
sampled but they were used to collect groundwater elevation date and groundwater flow direction.
The MNA performance is considered acceptable if: A review of the groundwater chemistry identifies
conditions that are favorable for biodegradation, concentrations of PAHs and BTEX are reduced along
the flow paths downgradient of the former source areas, and monitoring results indicates that natural
attenuation is occurring at a rate sufficient to prevent the spread contaminant plume. The October 1999
Technical Memorandum No. 15 provided a conceptual site model and evaluation of MNA process at the
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site. The results indicated intrinsic bioremediation is occurring at the site and the aggregate natural
attenuation processes are sufficient to cause stable or shrinking groundwater plume. Additionally,
concentrations of PAHs and BTEX are also evaluated following each monitoring event and statistically
based trends are identified. Results of these evaluations for wells in the water table aquifer with
sufficient data for evaluation (MW-2R and MW-23RR) have been stable or declining concentration
trends.
Water Table Aquifer
During this FYR period, the following water table aquifer monitoring wells did not have detected
groundwater concentrations exceeding the groundwater cleanup levels:
• MW-2R
o In 2014, ORC® Advanced was injected in the northwestern part of the site near MW-2R
as a pilot test to support biodegradation of persistent benzene concentrations. ORC®
Advanced is generally intended to support aerobic biodegradation for up to 12 months;
however, in 2021, the dissolved oxygen (DO) and oxygen reducing potential (ORP)
decreased to levels at or below observed levels prior to injection. Benzene has not been
detected at concentrations exceeding groundwater cleanup levels since 2015.
o This well has met the performance standards laid out in the Consent Decree (CD), but it
was recommended to continue sampling to serve as an upgradient well for groundwater
flow onto the site from the northwest.
• MW-6R
o This well has met the performance standards laid out in the CD, but it was
recommended to continue sampling to serve as an upgradient well for groundwater flow
onto the site from the southwest.
• MW-13, MW-14RR, and MW-3 6
o The 2019 annual report recommended that these wells no longer be sampled for analysis
because groundwater concentrations were compliant with the performance standard laid
out in the CD.
o The following water table aquifer monitoring wells had detected groundwater
concentrations exceeding groundwater cleanup levels.
o MW-4Groundwater from MW-4 was not sampled in 2018, and samples for
polyaromatic hydrocarbons (PAHs) were not collected in 2020. Prior to 2018, MW-4
was last sampled in 2012, and volatile organic compounds (VOCs)/PAHs were not
detected above laboratory reporting limits (RL). However, in 2021, naphthalene was
detected in the groundwater sample at a concentration of 4.41 [j,g/L exceeding its
groundwater cleanup level of 1.4 (J,g/L. Prior to the 2021 sampling event, naphthalene
last exceeded its groundwater cleanup level in 2006.
• MW-23RR
o Benzo(a)anthracene was the only exceedance of groundwater cleanup levels during this
FYR period in MW-23RR. Benzo(a)anthracene was J coded in 2018 at a concentration
of 0.154 |ig/L. In 2019, it was detected at a concentration of 0.182 |ig/L. In 2020,
benzo(a)anthracene was J coded at a concentration of 0.0779 |ig/L. Finally, in 2021,
benzo(a)anthracene was detected at a concentration of 0.237 |ig/L. The above detections
all exceed the groundwater cleanup standard for benzo(a)anthracene of 0.1 |ig/L. Based
on groundwater analytical data used from 2010 through 2021, in the EPA Groundwater
Statistics tool it appears there is an increasing trend in benzo(a)anthracene
concentration.
• MW-3 7
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o In 2018, the benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene,
benzo(k)fluoranthene, and dibenzo(a,h)anthracene were all detected above their
respective groundwater cleanup levels. Table F depicts the concentrations detected
exceeding the groundwater cleanup levels. VOCs and PAHs were not detected above
their respective RL in 2019, 2020, or 2021.
Table F: 2018 MW-37 Groundwater Cleanup Level Exceedances
Contaminant
Concentration (ng/L)
Groundwater Cleanup Level (ng/L)
Benzo(a)anthracene
0.120 J
0.1
Benzo(a)pyrene
0.257
0.2
B enzo(b)fluoranthene
0.270
0.2
B enzo(k)fluoranthene
0.259
0.2
Dib enzo( a,h)anthracene
0.313
0.033
* J = analyte detected at level less than reporting limit but greater than or equal to method detection limit
yellow cells indicate concentrations exceeding groundwater cleanup levels.
Intermediate Zone
During this FYR period, the following intermediate zone monitoring wells did not have detected
groundwater concentrations exceeding the groundwater cleanup levels:
• MW-10
o VOCs and PAHs have not been detected at concentrations exceeding groundwater
protection levels.
• MW-44
o This well was installed in 2021, and only groundwater two samples have been collected.
VOCs and PAHs were not detected above their respective RL.
• MW-45
o This well was installed in 2021, and only two groundwater samples have been collected.
VOCs and PAHs were not detected above their respective RL.
The following intermediate zone monitoring wells had detected groundwater concentrations exceeding
groundwater cleanup levels or had DNAPL present:
• MW-8R
o Benzene and naphthalene both exceeded their respective groundwater cleanup levels
during this FYR period.
o In 2018, benzene was detected at concentrations of 22.1 [j,g/L in November 2018 and
71.2 [j,g/L in December 2018. In 2019 and 2020, benzene was detected at concentrations
of 55.0 and 73.6 (J,g/L, respectively. Benzene was not detected above its RL in 2021.
o In 2018, naphthalene was detected at a concentration of 13.0 (J,g/L. In 2019, it was
detected at a concentration of 2.0 (J,g/L. Naphthalene was not detected above its RL in
2020 or 2021.
o There appears to be a statistically significant increasing trend for benzene. There does
not appear to be a statistically significant trend for naphthalene; however, naphthalene
concentrations have increased above historic detection levels. Additional data may
reveal a statistically significant increasing trend.
o MW-38
o DNAPL is present in this monitoring well, and manual extraction methods are
conducted during the annual sampling events. Since 2018, approximately three gallons
of DNAPL has reportedly been recovered (Stantec 2018-2021).
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• MW-39
o DNAPL is present in this extraction well, and automated extraction methods were
ongoing during this FYR period. Since 2018, approximately 46.5 gallons of DNAPL has
reportedly been recovered from the automated system (Stantec 2018-2021).
• MW-40
o DNAPL is present in this monitoring well, and manual extraction methods are
conducted during the annual sampling events. Since 2018, approximately 9.5 gallons of
DNAPL has reportedly been recovered (Stantec 2018-2021).
• MW-41
o Naphthalene was detected at concentrations of 1.80 [j,g/L in November 2018 and 2.56
[j,g/L in December 2018. These detections both exceed the groundwater cleanup level of
1.4 ng
o MW-42
o This well was installed in 2020, and only three groundwater samples have been
collected. Benzene and naphthalene have exceeded their respective groundwater
protection standard in each sample collected. Benzene was detected at concentrations of
96.6 [j,g/L (June 2020), 126 [j,g/L (September 2020), and 102 [j,g/L (September 2021).
Naphthalene was detected at concentrations of 1,050 [j,g/L (June 2020), 1,190 [j,g/L
(September 2020), and 1,260 |ig/L (September 2021).
o MW-43
o This well was installed in 2020, and only three groundwater samples have been
collected. Table G depicts concentrations exceeding groundwater cleanup levels from
the three collected groundwater samples. Analytes not listed did not exceed groundwater
cleanup standards.
o
Table G: MW-43 Groundwater Cleanup Level Exceedances
Sample Date
Benzene
Benzo(a)
anthracene
Benzo(a)pyrene
Benzo(b)
fluoranthene
Benzo(k)
fluoranthene
June 2020
16,100
0.427 U
0.375 U
0.760 U
0.594 U
September 2020
14,000
0.458 J
0.409 J
0.384 U
0.300 U
September 2021
15,400
0.984
0.749
0.488
0.225
GWCL
5.0
0.1
0.2
0.2
0.2
Sample Date
Chrysene
Dibenzo(a,h)
anthracene
2-Methylnaphthalene
Naphthalene
lod detection
June 2020
0.708 U
0.583 11
408
8,550
September 2020
0.358 U
0.295 U
380
6,470
September 2021
0.688
0.0858 J
288
3,070
GWCL
0.2
0.033
63
1.4
* J = analyte detected at level less than reporting limit but greater than or equal to met
limit U = analyte not detected at or above the value report GWCL = Groundwater Cleanup Level. All
concentrations reported in (J,g/L. Italicized text indicates the reporting limit exceeding GWCL likely
due to dilution factor from high benzene levels. Yellow cells indicate concentrations exceeding
groundwater cleanup standards.
• MW-46
o This well was installed in 2021 and will utilize an automated DNAPL recovery system.
Shallow Bedrock
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Monitoring well MW-9 is the only monitoring well screened within the shallow bedrock and was
sampled during each annual event. During this FYR period, VOCs were not detected above RL.
Benzo(a)anthracene was detected at a concentration of 0.133 [j,g/L in 2021. The 2021 detection exceeded
the groundwater cleanup level of 0.1 (J,g/L. During the 2018, 2019, and 2020 sampling events,
benzo(a)anthracene was not detected above RL. The remaining PAHs were not detected at
concentrations above their respective groundwater cleanup levels. There does not appear to be enough
evidence to identify a statistically significant trend.
Extraction Wells
Operation of an automated DNAPL recovery system in MW-39 has occurred since 2012. Since initial
startup of the system, approximately 180 gallons of DNAPL and water have been removed from MW-
39. Due to decreased recovery in MW-39, the automated recovery system will be removed and
reinstalled in the newly installed MW-46 DNAPL extraction well. Manual DNAPL recovery will
continue in monitoring wells MW-38, MW-39, and MW-40.
Willow Creek
The potential contamination of sediment in Willow Creek from groundwater interaction with the
creek bed was raised as a potential issue in the last FYR. To address this issue, pore water and
sediment samples were collected on October 28, and 29, 2020 from six locations (WC1 to WC6) in
Willow Creek that were positioned adjacent to the Site, upstream, and downstream.
Overall reporting limits were adequate for PAHs and VOCs in the analytical report, except for
acenaphthene, acenaphthylene, anthracene, dibenzo(a,h)anthracene, ethylbenzene and total xylenes in
sediment, and anthracene, benzo(a)pyrene, benzo(g,h,i)perylene, benzo(k)fluoranthene,
dibenzo(a,h)anthracene and indeno(l,2,3-cd) pyrene in pore water. However, the reporting limits for
pore water were below the Refined Screening Levels (RSVs) (EPA, 2018), which are applicable for
Five Year Review data.
Analytical results for the creek sediment samples collected in 2020 indicated PAH concentrations
were less than the reporting limits at downstream sample locations WC1, WC2, and WC3, and at
upstream sample location WC5. At upstream sample location WC6, the only PAHs detected above
the reporting limits were fluoranthene at 0.0672 mg/kg and pyrene at 0.0578 mg/kg, both of which
were below the Consensus-Based Threshold Effect Concentration (TEC) (MacDonald et al., 2000)
for fluoranthene (0.423 mg/kg) and for pyrene (0.195 mg/kg). The sediment sample at WC4 located
immediately upstream of the dam had detected concentrations of eleven of the sixteen PAH
compounds analyzed. Of the detected PAHs at WC4, anthracene, benzo(a)anthracene,
benzo(a)pyrene, chrysene, fluoranthene, phenanthrene, and pyrene concentrations exceeded the
respective TEC but not the Consensus-Based Probable Effect Concentration (PEC). The detected
concentration of indeno(l,2,3-cd)pyrene (0.146mg/kg) at WC4 was below the TEC. The calculated
total PAH concentration for the sediment sample from WC4 of 2.865 mg/kg exceeded the TEC (1.61
mg/kg) but not the PEC (22.8 mg/kg).
Detected concentrations of benzo(b)fluoranthene (0.374 mg/kg), benzo(g,h,i)perylene (0.164 mg/kg),
and benzo(k)fluoranthene (0.123 mg/kg) were reported for WC-4. No TEC or PEC values have been
established for these PAHs; however, EPA Region 4 Ecological Screening Values (ESVs) are
available. The concentration of benzo(b)fluoranthene exceeds the ESV (0.190 mg/kg), whereas the
other two PAH concentrations did not exceed ESVs. VOC concentrations in the creek sediment
samples from WC1 to WC6 in 2020 were less than the reporting limits.
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Analytical results for the creek water samples at WC1 to WC6 collected in 2020 indicated PAH
concentrations were less than the laboratory analytical reporting limits. The VOC results for creek
water samples from WC1 to WC6 in 2020 were below the reporting limits except for detected toluene
concentrations in the samples from locations WC1 (1.37 |ig/L) and WC2 (1.80 |ig/L), downstream of
the storm sewer outfall. However, these concentrations were below the ESV (62 |ig/L).
Site Inspection
The inspection of the Site was conducted on July 6, 2022. In attendance were Amer Safadi, EPA
Remedial Project Manager; Dan Cook, IDNR; Jill Stevens, Senior Manager-Strategic Projects, Alliant
Energy; and Randy Kroneman, Project Manager, Stantec. The purpose of the inspection was to assess
the protectiveness of the remedy. The Site Inspection Form is in Appendix C.
Land use on the Site and in areas surrounding the Site does not appear to have changed in the past five
years. There was nothing observed that is inconsistent with any of the activity and use limitations in the
two environmental covenants on the site property. The fence and gate surrounding the Site are in good
condition and the enclosure for the DNAPL recovery system was secure. All monitoring wells observed
were in fair condition. The vegetation/grass is high and could use additional care.
The Operations and Maintenance Manager for the city of Mason City confirmed that there are no
changes planned to the low-head dam at South Pennsylvania Avenue or Willow Creek in the vicinity of
the Site.
In the Figures Section, see the Site Inspection Photos taken during this Site visit.
V. TECHNICAL ASSESSMENT
QUESTION A: Is the remedy functioning as intended by the decision documents?
Question A Summary
The remedy is continuing to function as intended by the ROD and as modified by the ESD. The soil
removal action eliminated exposure to contaminated soil and minimized the ongoing contribution to
groundwater contamination. Some residual soil contamination remains on Site because it was
inaccessible during the removal action. This residual soil contamination may still contribute to
groundwater contamination. DNAPL is present in several monitoring/extraction wells and will
continue to leach contamination into the groundwater until it is removed. Based on the limited data
available, the new monitoring wells appear to have laterally delineated the DNAPL extent; however,
additional monitoring is needed. Currently, groundwater monitoring at the site indicates two
monitoring wells have increasing contaminant trends, while the remaining monitoring wells without
DNAPL present are indicating decreasing or stable trends or no detections of COCs above
groundwater cleanup levels. These trend analyses demonstrate natural attenuation is occurring for a
majority of the site in an acceptable manner and rate consistent with the RAO established in the
ROD.
MNA is limiting the migration of the contaminated groundwater plume off-site while slowly restoring
groundwater to contaminant levels that do not pose an unacceptable risk. The activity and use
limitations in the Environmental Covenants prevent exposure to contaminated groundwater in the
meantime. Environmental Covenants are enacted on the site property, but they do not appear to protect
16
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against the newly delineated area of contamination (e.g., newly installed monitoring wells MW-42 and
MW-43) located west of the site. These wells have COCs at concentrations above groundwater
cleanup levels established in the ROD and ESD. A review of the Environmental Covenants should be
conducted to ensure the remedy remains protective of human health.
Elevated levels of COCs and DNAPL still persist near the northwestern portion of the site where
residual soil contamination remains. A new DNAPL extraction well has been installed in this area to
continue to address the DNAPL on site. With the installation of this new well, additional data
should be collected and evaluated to determine if the remedy will restore the aquifer within a
reasonable timeframe.
Remedial Action Performance
After the installation of the new monitoring wells, benzene contamination in the intermediate zone
has been delineated as recommended during the last FYR. Manual DNAPL recovery is ongoing in
monitoring wells MW-38 and MW-40. The new DNAPL extraction well MW-46 will use the
automated recovery system after the decline in DNAPL recovery from MW-39. Currently, there are
two wells, MW-8R and MW-23RR, with increasing contaminant trends. Both wells are located
downgradient relative to groundwater flow direction of the DNAPL and residual soil contamination.
Based on data obtained from annual monitoring reports, benzene concentrations detected in MW-8R
have an increasing trend (Stantec, 2022). MW-8R is located hydraulically downgradient of MW-40,
which contains DNAPL, and an area of residual soil contamination. The DNAPL and residual soil
contamination may be causing the increasing trend of benzene in MW-8R, but additional
investigation should be conducted to determine the cause of the increasing trend.
In MW-23RR, the concentration of benzo(a)anthracene has an increasing trend, but prior to 2018 had
not exceeded groundwater cleanup standards (Stantec, 2022). MW-23RR is located downgradient
relative to groundwater flow direction of MW-38 and MW-39, both of which have DNAPL present.
The DNAPL may also be causing the increasing benzo(a)anthracene trend in MW-23RR. Additional
investigation of the cause of the increasing trend should be considered at MW-23RR.
Monitoring well MW-4 is located on the downgradient edge of the site and is screened in the water
table aquifer. VOCs and PAHs had not been detected above their respective groundwater cleanup
standards since 2006; however, naphthalene was detected at a concentration above the groundwater
cleanup standard in the 2021 annual groundwater sampling event.
The newly installed monitoring wells MW-42 and MW-43 have numerous analytes that exceed their
respective groundwater cleanup standards. These elevated detects are likely attributed to the close
proximity of the monitoring wells to the location of known DNAPL presence.
Remaining monitoring wells not listed have stable or decreasing concentration trends or no detections
of COCs above groundwater cleanup levels.
Implementation of Institutional Controls and Other Measures
The Environmental Covenants that are in place on the site include a requirement that groundwater
underlying the property not be used, there not be any residential use on site, and any structure
constructed on the Site be engineered to address vapor intrusion unless it can be demonstrated that
17
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vapor intrusion would not present a health risk to building occupants. Although not a requirement of
the remedy, the site is fenced on all sides, and access is restricted. The 2021 annual site inspection
noted the fence, gate, and locks were in good condition (Stantec, 2022).
Monitoring wells MW-42 and MW-43 appear to be located outside of the area protected by the
Environmental Covenants. Contaminants of concern have been detected in these monitoring wells at
levels exceeding groundwater protection levels. The Environmental Covenants should be reviewed
near monitoring wells MW-42 and MW-43 to ensure the remedy remains protective of human health.
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels, and remedial action
objectives (RAOs) used at the time of the remedy selection still valid?
Question B Summary:
Changes in Standards and TBCs
There have been no changes to the exposure assumptions, the groundwater cleanup levels, or
remedial action objectives since the last FYR that would call into question the protectiveness of the
remedy.
Changes in Toxicity and Other Contaminant Characteristics
Table H is a comparison of the Action Levels for the site with regional screening levels (RSLs) as
published in the EPA's risk-based regional screening tables in November 2017 from the previous FYR
and the May 2022 RSLs which are the most current screening levels at the time of writing this FYR.
Since then, the RSL for naphthalene has decreased from 0.17 to 0.11 |ig/L. The RSL for 2-
Methylnaphthalene has decreased from the ESD concentration of 63 |ig/L to 36 |ig/L. The difference
between the Action Level and the current RSL for 2-methylnaphthalene results in an unacceptable
non-cancer hazard quotient (HQ) of 1.75 to a child resident. The changes in toxicity values since the
ROD or ESD do not call into question the effectiveness of the remedy. Although, some current EPA
RSLs for tap water are lower than the Action Levels in the ROD or as modified by the ESD, with the
exception of the Action Level for 2-methylnaphthalene, the Action Levels are still within the EPA's
acceptable risk range. The remaining Action Levels continue to be protective. The remedy continues
to be protective in the short-term because institutional controls prohibit potable use of the
groundwater.
Table H: Comparison of Action Levels and RSLs in jig/L.
Contaminant ROD or ESD November 2017
Action Level RSLs
May 2022
RSLs
Benzene
Benzo(a)pyrene
Benzo(k)fluoranthene
Benzo(a)anthracene
Chrysene
Benzo(b)fluoranthene
Indeno(l,2,3-cd)pyrene
Dibenz(a,h)anthracene
Naphthalene
5.0
0.2
0.2
0.1
0.2
0.2
0.4
0.3
1.4
5.0
0.2
2.5
0.03
25
0.25
0.25
0.25
0.17
5.0
0.2
2.5
0.03
25
0.25
0.25
0.025
0.11
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*Bold indicates Action Level outside acceptable risk range for non-cancer health
effects.
Changes in Risk Assessment Methods
There have been changes in the human health risk assessment methods since the baseline risk
assessment was completed with respect to dermal risk assessment guidance and risks via the
inhalation pathway that differ from the methods used in the baseline risk assessment; however, no
changes to risk assessment methods have occurred since the last FYR. Despite changes from the
original base-line risk assessment, they do not have a significant impact on the conclusions of the risk
assessment and do not affect the protectiveness of the remedy.
Changes in Exposure Pathways
There have been no changes in land use since the last FYR that would alter exposure pathways for
human receptors; however, detections of site contaminants at MW-42 and MW-43 may indicate
migration of contaminants off-site and potential future exposures outside the areas protected by the
current Environmental Covenants. The Environmental Covenants need evaluation to determine if
they sufficiently cover the areas impacted by the plume to prevent future exposures.
The Environmental Covenants that are in place on the Site include a requirement that groundwater
underlying the property not be used, there not be any residential use, and any structure constructed on
the Site be engineered to address vapor intrusion unless it can be demonstrated that vapor intrusion
would not present a health risk to building occupants. No activities were observed that violate these
restrictions. Although not a requirement of the remedy, the Site is fenced on all sides and access is
restricted.
The vapor intrusion pathway was not evaluated during the baseline risk assessment, and
contaminants with sufficient volatility exist that could potentially contribute to vapor intrusion risk if
the pathway were complete. Naphthalene, benzo(a)anthracene and benzene are sufficiently volatile
and toxic to warrant concerns about potential vapor intrusion. The garage currently on the site is not
occupied by people for longer than the brief amount of time needed to park a vehicle or unload
materials into the building for storage, therefore there is no need to evaluate the vapor intrusion
pathway for that building. If buildings were constructed on the site in the future, this pathway would
be a concern. The Environmental Covenants for the site include use limitations to address this
pathway and prevent future exposure.
Overall, the PAH concentrations reported for the 2020 creek sediment samples were less than the
historical maximum concentrations, indicating that PAH concentrations in creek sediment adjacent to
and downstream from the site are decreasing over time.
A relatively small area of sediment contamination exceeds the TECs, but not the PECs, at location WC-
4 (located behind the dam), with a general trend towards decreasing sediment concentrations over time.
Moreover, pore water concentrations are below ESVs (and reporting limits are below ESVs/RSVs).
Various lines of evidence indicate that the overall ecological risk in Willow Creek is likely to be limited.
No further action is needed as a result of the sediment investigation.
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QUESTION C: Has any other information come to light that could call into question the protectiveness
of the remedy?
Question C Summary:
During this FYR period, two new monitoring wells MW-42 and MW-43 were installed west of the site.
Contaminants of concern were detected at concentrations exceeding their respective groundwater
cleanup levels. Environmental Covenants do not appear to protect the property around monitoring
wells MW-42 and MW-43 and should be reviewed to ensure the remedy remains protective of human
health. To the best of our knowledge, during the FYR period no impacts from climate change have
occurred that affect the protectiveness of the remedy. Potentially, future increases in precipitation
could elevate groundwater levels to contact residual contaminated soils or affect transport of impacted
groundwater. Future flooding could cause damage to the monitoring wells and the automated DNAPL
recovery system.
VI. ISSUES/RECOMMENDATIONS
Issues/Recommendations
Ql (s) without Issues/Recommendations Identified in the l-ive-Year Review:
None
Issues and Recommendations Idenlilled in the Five-Year Review:
OU(s): 01
Issue Category: Remedy Performance
Issue: Benzene was not detected in the 2021 groundwater sample collected
from MW-8R, but concentrations in the three sampling events prior
exceeded the groundwater cleanup standard by more than an order of
magnitude.
Recommendation: Due to the significant concentration fluctuations in
MW-8/MW-8R, additional source control measures or ORC® Advanced
injections should be considered to prevent further benzene migration and to
decrease benzene concentrations over time.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight
Party
Milestone Date
No
Yes
PRP
EPA
12/31/2023
OU(s): 01
Issue Category: Remedy Performance
Issue: DNAPL extraction efforts appear to be limited in their ability to
control continuing contaminant contributions to groundwater, and do not
appear to be sufficient to support MNA achievement of groundwater
cleanup levels.
Recommendation: DNAPL destruction should be considered to further
limit these contributions and expedite the MNA remedy to achieve
20
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groundwater cleanup standards. Additional data collection is needed to
assess the current DNAPL extraction configuration. And continued
groundwater monitoring is necessary until all samples meet the
groundwater cleanup standards defined in the CD. Develop a plan to
address these issues per the milestone date listed below.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight
Party
Mile|s]tone Date
No
Yes
PRP
EPA
12/31/2023
OU(s): 01
Issue Category: Remedy Performance
Issue: The action level for 2-methylnaphthalene poses an unacceptable
non-cancer hazard quotient (HQ) of 1.75 to a child resident. An MCL is
not available for this compound.
Recommendation: The 2-methylnapthalene action level should be revised
to ensure long-term protectiveness of the remedy.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight
Party
Mile|s]tone Date
No
Yes
PRP
EPA
12/31/2023
OTHER FINDINGS
In addition, the following recommendations were identified during the FYR but do not affect current
and/or future protectiveness:
• ORC® Advanced was used in a pilot study around MW-2R and was very effective at supporting
biodegradation of benzene concentrations to below RLs. However, 2021 was the first year since
the injection which DO and ORP were detected at levels at or below the levels observed prior to
injection (Stantec, 2022). Recommendation is to continue to monitor MW-2R for potential
benzene rebound now.
• Naphthalene was detected in MW-4 which is located on the downgradient edge of the site and
should be closely monitored to ensure contamination is not migrating off-site.
• Repair monitoring wells MW-4, MW-9, and MW-10 to ensure they are properly secured. Closely
monitor the concrete pad at monitoring well MW-22 to ensure it does not compromise the
integrity of the well. Remove surface build up near MW-36 to ensure it does not become buried
and lost.
• Monitoring wells MW-13, MW-14RR, and MW-36 were recommended to no longer be sampled
after 2019 because they were found to be compliant with the CD. Recommendation is to
continue collecting groundwater elevation data to determine groundwater flow conditions.
VII. PROTECTIVENESS STATEMENT
Protectiveness Statement(s)
21
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Operable Unit:
Protectiveness Determination: Planned Addendum Completion Date:
01
Protective
NA
Protectiveness Statement: The remedy at the Mason City Coal Gasification site is currently
protective of human health and the environment.
Protectiveness Determination:
Protective
Planned Addendum Completion Date:
NA
Protectiveness Statement: The remedy at the Mason City Coal Gasification site is currently
protective of human health and the environment.
VIII. NEXT REVIEW
The next five-year review report for the Mason City Coal Gasification Plant Superfund Site is required
five years from the completion date of this review.
22
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FIGURES
Figure 1: Site Area
Figure 2: Site Layout
Figures 3-1 Through 3-4: Water Table Aquifer Potentiometric Contours
Figure 4: Willow Creek Sampling Locations
Site Inspection Photos (34)
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II.4KMM
l^fir
¦ •-v * ' j,
- *¦
w &,
sj^v -V. ^
>- >,--*<• r;h s^*-
;-e.
... '»
" ^i>x< V
¦S' ' ,
.. « VlitrV-
•" m
«*-- TJ -
«f „s»
Mil-Is
-------
MW-43
-------
MV-14RR
-------
-------
MV-39
-------
VIEW NW FROM MW-23RR
-------
MV-23RR
-------
MV-41
-------
VIEW NE FROM MW-5
-------
Ml¥-5
-------
MlV-24
-------
VIEW SOUTH FROMMV-4
-------
VIEW WEST FROMMW-4
-------
¦BWB£9Efc&
MV-10
-------
MV-9
-------
Mil- I
-------
MV-37
-------
KBV-8R
-------
VIEW NW CORNER OF SITE
-------
WILLOW CREEK UPSTREM1
-------
M il!.() W CREEK DO WNSTREM1
-------
MV-3R
-------
Mil -2 R
-------
Mil- in
-------
Mil-16
-------
APPENDICES
-------
APPENDIX A
List of Documents Reviewed
Stantec, 2022. 2021 Annual Progress Report and Monitored Natural Attenuation Activities. Former
Manufactured Gas Plant Site, Mason City, Iowa. SEMS ID: IAD980969190.
Stantec, 2021. 2020 Annual Progress Report and Monitored Natural Attenuation Activities. Former
Manufactured Gas Plant Site, Mason City, Iowa. SEMS ID: IAD980969190.
Stantec, 2020. 2019 Annual Progress Report and Monitored Natural Attenuation Activities. Former
Manufactured Gas Plant Site, Mason City, Iowa. SEMS ID: IAD980969190.
Stantec, 2019. 2018 Annual Progress Report and Monitored Natural Attenuation Activities. Former
Manufactured Gas Plant Site, Mason City, Iowa. SEMS ID: IAD980969190.
Stantec, 2018. 2017 Annual Progress Report and Monitored Natural Attenuation Activities. Former
Manufactured Gas Plant Site, Mason City, Iowa. SEMS ID: IAD980969190.
EPA, 2001. Comprehensive Five-Year Review Guidance. Office of Emergency and Remedial Response
(5204G), EPA 540-R-01-007, OSWERNo. 9355.7-03B-P.
EPA. 2008. Explanation of Significant Differences in the Record of Decision for the Mason City,
Gasification Plant Site, Mason City, Iowa. September 2008.
EPA, 2018. Region 4 Ecological Risk Assessment Supplemental Guidance. March 2018 Update.
Scientific Support Section. Superfund Division. EPA Region 4.
EPA. 2022. Regional Screening Levels Updated May 2022.
EPA, 1999. Use of Monitored Natural Attenuation at Superfund, RCRA Corrective Action, and
Underground Storage Tanks Sites. Office of Solid Waste and Emergency Response (5203G), OSWER
No. 9200.4-17P.
Macdonald, D., Ingersoll, C.G., and Berger, T.A. 2000. Development and Evaluation of Consensus-
Based Sediment Quality Guidelines for Freshwater Systems. Archives of environmental contamination
and toxicology. 39. 20-31. 10.1007/s002440010075.
-------
APPENDIX B
GROUNDWATER SAMPLING RESULTS
AND STATISTICAL TRENDS TABLES
-------
TABLE 1-1
EXISTING WELL CONSTRUCTION SUMMARY
Top of Bottom of
TOC Well Screen Well Well/ Screened Screened Aquifer
Well Elevation TD* Length Diameter Screen Interval Interval Designation
(feet NAVD) (BTOC) (feet) (inches) Materials (feet NAVD) (feet NAVD)
Existing Wells
MW-2R
1107.83
14.20
9.0
2
PVC/SS
1102.6
1093.6
WaterTable
MW-3R
ll 07.63
12.50
8.0
2
LCS/SS
1103.1
1095.1
Water Table
MW-4
ll 06.93
14.40
5.0
2
LCS/SS
1097.5
1092.5
WaterTable
MW-5
1114.84
22.90
5.0
2
LCS/SS
1096.9
1091.9
WaterTable
MW-6R
111 2.61
25.46
10.0
2
PVC/PVC
1097.2
1087.2
WaterTable
MW-8R
1107.37
35.60
5.0
2
PVC/PVC
1076.8
1071.8
Intermediate Zone
MW-9
1106.81
25.19
5.0
2
LCS/SS
1086.6
1081.6
Shallow Bedrock
MW-IO
1106.99
35.43
5.0
2
LCS/SS
1076.6
1071.6
Intermediate Zone
MW-13
1110.40
18.32
10.0
2
LCS/SS
1102.1
1092.1
WaterTable
MW-14RR
1110.10
13.38
10.0
2
PVC/PVC
1106.7
1096.7
WaterTable
MW-20
11 22.34
39.40
10.0
2
LCS/SS
1092.9
1082.9
WaterTable
MW-22
1116.17
54.03
5.0
2
LCS/SS
1067.1
1062.1
Intermediate Zone
MW-23RR
1111.09
16.91
10.0
2
PVC/PVC
1104.2
1094.2
WaterTable
MW-24R
111 2.85
16.95
10.0
2
PVC/SS
1105.9
1095.9
WaterTable
MW-36
1108.73
15.76
10.0
2
PVC/SS
1103.0
1093.0
WaterTable
MW-37
1110.03
16.38
10.0
2
PVC/SS
1103.7
1093.7
WaterTable
MW-38
1108.84
35.06
5.0
2
PVC/SS
1078.8
1073.8
Intermediate Zone
MW-39
1111.01
42.52
5.0
4
PVC/SS
1077.5
1072.5
Intermediate Zone
MW-40
1107.35
35.48
5.0
2
PVC/PVC
1076.9
1071.9
Intermediate Zone
MW-41
1111.37
39.58
5.0
2
PVC/PVC
1076.8
1071.8
Intermediate Zone
MW-42
1109.04
35.50
5.0
2
PVC/PVC
1078.5
1073.5
Intermediate Zone
MW-43
1111.46
36.80
5.0
2
PVC/PVC
1079.7
1074.7
Intermediate Zone
MW-44
1110.57
38.17
5.0
2
PVC/PVC
1077.4
1072.4
Intermediate Zone
MW-45
1111.26
36.96
5.0
2
PVC/PVC
1079.3
1074.3
Intermediate Zone
MW-46
1111.72
41.20
5.0
4
PVC/PVC
1075.5
1070.5
Intermediate Zone
Notes
* Original well total depth (TD) following final well construction and well development.
BTOC = Below top of casing
LCS = Low carbon steel
NAVD - North American Vertical Datum 1988
PVC = Polyvinyl chloride
SS = Stainless steel
TOC = Top of casing
-------
TABLE 1-2
GROUNDWATER PERFORMANCE STANDARDS
Compound Performance Standard (|jg/L)
Volatile Organic Compounds
Benzene 5.0
Polynuclear Aromatic Hydrocarbons
Benzo (a) anthracene
0.1
Benzo(b)fluoranthene
0.2
Benzo (k)fluoranthene
0.2
Benzo(a)pyrene
0.2
Chrysene
0.2
Dibenzo (a, h) anthracene
0.033'
lndeno(l ,2,3-cd)pyrene
0.4
2-Methylnaphthalene
63.0°
Naphthalene
1.4°
Notes:
a = Revised or added in the September 2008 Explanation of Significant
Differences.
|jg/L= Microgram(s) per liter.
-------
TABLE 2-1
WATER LEVEL AND WELL MEASUREMENT DATA
Date:
9/27/2021
11/9/2021
Dam Position:
Down
Down
Top-of-Casing
Constructed
Screen
Depth to
Water
Measured
Screen
Depth to
Water
Measured
Screen
Elevation
Total Depth
Length
Water
Elevation
Total Depth
Occlusion
Water
Elevation
Total Depth
Occlusion
Location
(feet NGVD)
(feet)
(feet)
(feet)
(feet NGVD)
(feet)
(%)
(feet)
(feet NGVD)
(feet)
(%)
MW-2R
1107.83
14.20
9.0
9.00
1,098.83
14.13
0.8%
8.97
1,098.86
NM
NA
MW-3R
1107.63
12.50
8.0
8.80
1,098.83
12.45
0.6%
8.74
1,098.89
NM
NA
MW-4
1106.93
14.40
5.0
8.42
1,098.51
14.35
1.0%
8.65
1,098.28
NM
NA
MW-5
1114.84
22.90
5.0
16.31
1,098.53
22.54
7.2%
16.48
1,098.36
NM
NA
MW-6R
1112.61
25.46
10.0
13.80
1,098.81
25.43
0.3%
13.82
1,098.79
NM
NA
MW-8R
1107.37
35.60
5.0
9.00
1,098.37
35.56
0.8%
9.00
1,098.37
NM
NA
MW-9
1106.81
25.19
5.0
9.72
1,097.09
25.16
0.6%
9.64
1,097.17
NM
NA
MW-10
1106.99
35.93
5.0
11.99
1,095.00
35.85
1.6%
11.83
1,095.16
NM
NA
MW-13
1110.40
18.32
10.0
11.59
1,098.81
18.29
0.3%
11.48
1,098.92
NM
NA
MW-14RR
1110.10
13.38
10.0
11.33
1,098.77
13.35
0.3%
11.32
1,098.78
NM
NA
MW-20
1122.34
39.40
10.0
26.12
1,096.22
39.29
1.1%
26.12
1,096.22
NM
NA
MW-22
1116.17
54.03
5.0
20.74
1,095.43
53.97
1.2%
20.97
1,095.20
NM
NA
MW-23RR
1111.09
16.91
10.0
12.12
1,098.97
17.00
-0.9%
12.30
1,098.79
NM
NA
MW-24R
1112.85
16.95
10.0
13.79
1,099.06
16.92
0.3%
14.17
1,098.68
NM
NA
MW-36
1108.73
15.76
10.0
9.94
1,098.79
15.71
0.5%
9.94
1,098.79
NM
NA
MW-37
1110.03
16.38
10.0
11.18
1,098.85
16.30
0.8%
11.36
1,098.67
NM
NA
MW-38
1108.84
35.06
5.0
NM
NA
NM
NA
NM
NA
NM
NA
MW-39
1111.01
42.52
5.0
11.65
1,099.36
NM
NA
NM
NA
NM
NA
MW-40
1107.35
35.48
5.0
8.33
1,099.02
NM
NA
8.46
1,098.89
NM
NA
MW-41
1111.37
39.58
5.0
12.52
1,098.85
39.53
1.0%
12.66
1,098.71
NM
NA
MW-42
1109.04
35.50
5.0
10.41
1,098.63
35.38
2.4%
10.40
1,098.64
NM
NA
MW-43
1111.46
36.80
5.0
12.68
1,098.78
36.74
1.2%
12.55
1,098.91
NM
NA
MW-44
1110.57
38.17
5.0
Nl
Nl
Nl
NA
9.35
1,101.22
38.17
0.0%
MW-45
1111.26
36.96
5.0
Nl
Nl
Nl
NA
13.40
1,097.86
36.96
0.0%
Willow Creek
WC-01
1,119.75
NA
NA
20.76
1,098.99
NA
NA
20.71
1,099.04
NA
NA
Above Dam
1,108.78
NA
NA
9.97
1,098.81
NA
NA
9.89
1,098.89
NA
NA
Below Dam
1,108.69
NA
NA
12.08
1,096.61
NA
NA
11.99
1,096.70
NA
NA
Notes:
NGVD = National Geodetic Vertical Datum.
NA = Not applicable.
Nl = Well not installed yet.
NM = Not measured.
-------
TABLE 2-2
VERTICAL HYDRAULIC GRADIENT SUMMARY
Vertical
Gradient
Well Pairs
Aquifer
Designation
TOC
Elevation
(feet NAVD)
Top of
Screened
Interval
(feet NAVD)
Bottom of
Screened
Interval
(feet NAVD)
Midpoint of Screen
Screen" Length
(feet NAVD) (feet)
Groundwater Vertical Groundwater Vertical
Elevation Hydraulic Elevation Hydraulic
9/27/2021 Gradient15 11/9/2021 Gradient15
(feet NAVD) (ft/ft) (feet NAVD) (ft/ft)
MW-3R
MW-8R
Water Table
Intermediate Zone
1107.63
1107.37
1103.1
1076.8
1095.1
1071.8
1099.1
1074.3
8.0
5.0
1098.83
1098.37
-0.020
1098.89
1098.37
-0.023
MW-4
MW-10
Water Table
Intermediate Zone
1106.93
1106.99
1097.5
1076.5
1092.5
1071.5
1095.0
1074.0
5.0
5.0
1098.51
1095.00
-0.163
1098.28
1095.16
-0.146
MW-2R
MW-40
Water Table
Intermediate Zone
1107.83
1107.35
1102.6
1076.9
1093.6
1071.9
1098.1
1074.4
5.0
5.0
1098.83
1099.02
0.009
1098.86
1098.89
0.001
MW-23RR
MW-41
Water Table
Intermediate Zone
1111.09
1111.37
1104.2
1076.8
1094.2
1071.8
1099.2
1074.3
10.0
5.0
1098.97
1098.85
-0.005
1098.79
1098.71
-0.004
MW-36
MW-42
Water Table
Intermediate Zone
1108.73
1109.04
1103.0
1078.5
1093.0
1073.5
1098.0
1076.0
10.0
5.0
1098.79
1098.63
-0.008
1098.79
1098.64
-0.008
MW-13
MW-43
Water Table
Intermediate Zone
1110.40
1111.46
1102.1
1079.7
1092.1
1074.7
1097.1
1077.2
10.0
5.0
1098.81
1098.78
-0.002
1098.92
1098.91
-0.001
Notes
Deep Well Water Elevation - Shallow Well Water Elevation
Vertical Gradient Shallow Well Saturated Mid-Screen Elevation - Deep Well Mid-Screen Elevation
Column values denote midpoint of the full screen. Hydraulic gradient calculations were based on the midpoint of the wetted portion
of the screen of the water table wells.
Negative vertical gradients indicate downward flow potential; positive vertical gradients indicate upward flow potential,
ft/ft = Foot per foot of feet per foot.
NAVD - North American Vertical Datum 1988
TOC = Top of casing
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Well No.
Date
Temperature
(°C)
Specific
Conductance
(mS/cm)
pH
Oxidation-
Reduction
Potential
(mV)
Dissolved
Oxygen
(mg/L)
Turbidity
(NTU)
MW-2R
3/26/2003
8.0
0.793
8.12
21.0
1.48
0.03
6/23/2003
13.1
3.584
7.86
-79.8
1.29
2.22
9/16/2003
20.0
1.922
8.13
-175
1.03
0.74
12/2/2003
12.8
0.672
7.79
-136
2.69
6.36
3/23/2004
8.2
0.736
7.95
-162
1.53
2.73
6/17/2004
11.8
2.242
7.41
224
2.44
0.88
9/16/2004
14.7
1.710
7.89
-111
0.11
0.68
12/28/2004
11.7
0.930
7.84
-156
0.12
2.11
3/22/2005
6.6
0.773
7.86
-185
0.39
1.87
6/15/2005
10.7
1.113
7.63
-64.3
0.23
0.71
9/14/2005
16.2
1.063
7.61
-153
0.26
0.81
12/9/2005
12.5
0.737
8.50
-128
0.31
3.15
3/7/2006
6.5
0.602
8.62
-152
0.48
4.12
6/16/2006
11.5
0.966
7.37
18.8
0.59
1.55
9/6/2006
14.8
0.715
7.80
26.3
0.06
0.95
12/5/2006
11.7
0.685
7.93
-192
0.11
5.86
3/27/2007
6.5
0.802
7.93
-192
0.13
1.04
6/12/2007
11.3
0.828
10.31
-98.3
0.11
0.83
9/5/2007
17.1
1.601
7.72
-111
0.27
0.95
11/27/2007
13.4
0.764
7.94
-210
0.34
1.31
9/16/2008
14.7
1.040
7.58
-90.9
0.31
1.26
9/16/2009
14.3
1.326
8.47
-114
-
0.76
9/8/2010
15.4
1.309
7.43
-211
0.47
1.08
9/27/2011
15.2
1.182
7.88
-109
0.67
0.92
9/12/2012
15.9
1.709
8.70
-68.5
0.46
0.71
9/10/2013
15.0
1.824
7.70
-166
0.14
0.63
9/23/2014
14.5
1.673
7.06
-47.6
0.47
2.44
9/16/2015
15.2
2.493
7.00
110
0.53
1.76
9/20/2016
16.1
2.260
7.64
33.9
1.18
3.24
9/7/2017
13.7
2.086
7.42
-54.3
1.77
1.86
11/8/2018
13.1
1.313
7.49
-33.6
1.26
1.82
10/23/2019
14.2
1.607
7.36
-165
2.72
1.63
9/29/2020
15.2
1.361
7.44
-38.2
0.62
1.89
9/28/2021
16.9
1.359
7.39
-56.2
0.15
0.84
Page 1 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Oxidation-
Specific Reduction Dissolved
Temperature Conductance Potential Oxygen Turbidity
Well No. Date (°C) (mS/cm) pH (mV) (mg/L) (NTU)
3/26/2003
10.1
0.759
8.01
60.5
3.08
36.7
6/23/2003
15.7
2.241
9.13
-240
0.06
270
9/1 6/2003
16.1
1.622
7.53
-134
1.31
4.31
12/1/2003
14.0
0.757
7.68
-84.8
2.74
20.4
3/22/2004
10.1
0.551
8.00
219
0.94
118
6/15/2004
12.6
1.119
7.30
-122
2.40
26.8
9/14/2004
15.6
1.950
7.56
-180
0.67
14.7
12/20/2004
12.0
1.780
7.00
-141
0.76
10.6
3/21/2005
9.6
1.323
7.90
-240
3.37
113
6/13/2005
12.2
1.482
7.00
-119
3.37
33.4
9/12/2005
16.7
1.703
7.12
-157
0.84
19.9
12/8/2005
13.1
1.585
7.97
-33.2
0.88
59.4
3/7/2006
9.0
0.795
7.68
87
1.09
56.2
6/15/2006
12.0
1.342
7.33
-157
1.07
2.22
9/5/2006
15.2
1.230
7.34
41.5
1.18
2.94
12/4/2006
13.1
0.935
7.66
-127
1.02
16.8
3/26/2007
10.2
0.727
7.81
-154
3.87
27.6
6/11/2007
12.4
1.002
8.98
-142
1.94
17.1
9/4/2007
17.0
1.183
8.09
-156
1.40
7.10
11/26/2007
14.4
1.133
7.39
-137
1.31
5.41
9/15/2008
15.1
1.447
7.69
-107
1.73
11.8
9/15/2009a
15.4
1.441
9.05
-148
1.03
4.40
9/8/2010a
13.7
2.195
7.11
7.0
1.01
1.21
9/26/201 la
14.5
1.781
7.54
-122
2.10
12.5
9/12/2012a
15.1
2.064
6.51
84.7
2.45
8.90
9/10/2013
NS
NS
NS
NS
NS
NS
9/22/2014
NS
NS
NS
NS
NS
NS
9/15/2015
NS
NS
NS
NS
NS
NS
9/19/2016
NS
NS
NS
NS
NS
NS
9/7/2017
NS
NS
NS
NS
NS
NS
11/7/2018
NS
NS
NS
NS
NS
NS
10/22/2019
12.7
1.522
7.13
-297
0.39
156
9/29/2020
13.4
1.468
7.44
-27.1
2.49
120
9/28/2021
15.1
1.006
7.63
84.2
1.12
32.0
Page 2 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Well No.
Date
Temperature
(°C)
Specific
Conductance
(mS/cm)
pH
Oxidation-
Reduction
Potential
(mV)
Dissolved
Oxygen
(mg/L)
Turbidity
(NTU)
MW-6/MW-6R
3/25/2003
10.2
0.960
6.83
58.8
0.41
0.11
6/24/2003
14.6
5.829
8.44
-1.30
0.31
29.8
9/1 7/2003
16.5
2.491
6.77
-26.6
0.28
5.24
12/3/2003
12.8
0.980
6.65
10.9
4.37
2.94
3/23/2004
10.7
0.850
6.84
-74.8
0.67
13.9
6/15/2004
12.7
2.792
6.34
18.3
1.94
24.1
9/14/2004
15.0
1.410
6.69
-52.7
0.25
3.46
12/20/2004
12.3
1.890
6.46
27.7
0.89
20.1
3/21/2005
9.9
1.493
6.83
-244
0.16
9.69
6/13/2005
12.6
2.109
6.51
-13.2
0.70
18.2
9/13/2005
16.3
1.253
6.63
-36.3
0.16
5.60
12/8/2005
13.1
1.553
7.46
-19.3
1.76
6.02
3/7/2006
10.2
1.192
6.93
15.2
0.96
8.21
6/15/2006
12.0
3.262
6.32
20.8
1.48
14.3
9/5/2006
14.5
2.724
6.64
182
0.23
27.7
12/4/2006
12.7
1.946
6.50
53.0
0.09
6.71
3/27/2007
9.7
2.754
6.42
6.80
0.95
9.37
6/11/2007
12.7
3.271
7.78
-38.6
0.51
117
9/4/2007
16.2
2.573
7.14
-71.4
0.39
41.1
11/26/2007
14.1
1.880
9.46
-253
0.20
46.6
9/15/2008
15.3
2.648
6.79
-42.1
0.95
93.5
9/1 6/2009
14.3
2.117
7.04
13.4
0.54
248
9/9/2010
15.0
1.892
6.48
63.3
1.33
42.0
9/27/2011
14.9
1.997
6.94
-34.0
0.52
297
9/13/2012
14.7
2.304
8.02
87.6
0.29
84.3
9/10/2013
14.4
2.046
6.46
-62.6
0.99
31.7
9/22/2014
13.6
2.025
6.37
17.3
0.71
96.3
9/15/2015
13.2
2.507
6.65
70.9
0.29
8.40
9/19/2016
15.9
2.002
6.66
-27.0
0.38
7.73
9/6/2017
13.7
2.115
6.26
-90.2
1.53
36.5
11/7/2018
12.4
1.667
6.77
54.6
3.35
170
10/22/2019
12.9
1.357
6.47
-250
0.78
145
9/30/2020
14.4
1.715
6.60
101
1.56
109
9/29/2021
16.0
1.181
6.69
44.3
0.11
67.2
Page 3 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Well No.
Date
Temperature
(°C)
Specific
Conductance
(mS/cm)
pH
Oxidation-
Reduction
Potential
(mV)
Dissolved
Oxygen
(mg/L)
Turbidity
(NTU)
MW-8/MW-8R
3/26/2003
11.0
0.573
7.86
-28.2
1.66
0.18
6/23/2003
13.2
2.423
9.06
-177
0.01
9.20
9/16/2003
--
2.216
7.46
-176
0.05
1.99
12/2/2003
12.9
0.559
7.16
-144
3.33
3.23
3/23/2004
11.0
0.580
7.25
-130
0.23
19.0
6/17/2004
12.0
0.721
7.14
-114
0.91
4.56
9/16/2004
12.6
0.460
7.87
-164
0.15
3.14
12/28/2004
12.7
0.550
7.63
-236
0.10
12.9
3/22/2005
10.7
0.652
7.47
-186
0.05
10.7
6/14/2005
12.0
0.646
7.25
-154
0.22
6.31
9/14/2005
13.5
0.663
7.08
-169
0.21
1.88
12/12/2005
12.9
0.587
8.08
-130
0.08
4.34
3/7/2006
10.3
0.528
7.91
-125
0.53
42.5
6/16/2006
11.5
0.701
6.93
-125
0.64
5.23
9/6/2006
12.6
0.660
7.21
49.3
0.10
2.13
12/5/2006
12.4
0.630
7.21
-191
0.12
14.6
3/27/2007
10.5
0.625
6.91
-89.0
0.26
44.4
6/12/2007
11.6
0.624
10.69
-142
0.10
3.34
9/5/2007
14.6
0.649
7.77
-180
0.19
2.15
11 /27/2007
12.9
0.676
7.18
-170
0.12
3.25
9/16/2008
12.6
0.686
7.35
-109
0.37
14.8
9/16/2009
13.1
0.660
7.88
-108
0.28
3.62
9/8/2010
13.2
0.625
6.97
-211
0.40
2.64
9/27/2011
13.1
0.625
7.38
-89.4
0.47
4.63
9/12/2012
14.0
0.647
7.92
-14.2
0.23
7.68
9/10/2013
13.8
0.663
7.54
-221
0.09
25.2
9/23/2014
12.4
0.658
6.80
-130
0.33
19.5
9/16/2015
13.3
0.676
6.91
-13.5
0.19
3.29
9/20/2016
12.9
0.683
6.98
CO
o
CO
0.75
1.21
9/7/2017
12.0
0.860
6.74
-116
0.68
2.32
11/8/2018
11.7
2.285
6.85
76.7
3.07
3.20
12/11/2018
11.4
2.641
6.82
135
1.73
1.90
10/23/2019
12.7
1.491
6.70
-154
1.32
2.04
9/29/2020
12.9
1.720
7.07
-99.4
0.65
12.0
9/28/2021
17.0
1.438
7.24
-166
0.48
5.50
Page 4 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Oxidation-
Specific
Reduction
Dissolved
Temperature
Conductance
Potential
Oxygen
Turbidity
Well No.
Date
fC)
(mS/cm)
pH
(mV)
(mg/L)
(NTU)
MW-9
9/7/20l7
13.1
1.801
6.88
-120
0.50
29.6
ll/8/2018
12.7
1.879
6.97
-127
0.41
20.8
10/23/2019
12.6
1.564
6.86
-187
0.11
73.5
9/29/2020
12.6
1.343
7.62
-109
0.35
21.0
9/28/2021
14.2
1.265
7.13
-235
0.04
12.2
MW-IO
11/8/2018
11.8
0.875
7.42
-126.6
0.54
21.2
12/11/2018
10.9
0.953
7.47
-96.4
0.38
7.30
10/23/2019
11.9
0.796
7.01
-172
0.07
13.6
9/29/2020
11.7
0.730
7.38
-141
0.41
28.0
9/28/2021
13.3
0.580
7.88
-251
0.07
22.5
Page 5 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Oxidation-
Specific Reduction Dissolved
Temperature Conductance Potential Oxygen Turbidity
Well No. Date (°C) (mS/cm) pH (mV) (mg/L) (NTU)
3/27/2003
8.3
1.408
8.40
253
1.66
0.08
6/24/2003
15.5
2.369
8.46
-51.7
0.37
7.56
9/1 6/2003
--
0.912
7.59
-5.00
0.15
0.96
12/3/2003
12.9
0.847
7.80
-30.8
5.68
5.37
3/24/2004
8.2
1.022
8.02
226
0.53
5.72
6/1 6/2004
14.2
1.208
7.73
-18.0
1.12
5.22
9/15/2004
17.6
0.830
8.09
-47.1
2.22
21.9
12/27/2004
12.7
0.990
7.92
-119
0.33
6.48
3/22/2005
3.2
0.872
7.58
-84.8
9.01
2.38
6/13/2005
14.0
1.164
7.78
-90.5
1.30
5.38
9/13/2005
19.1
1.019
7.53
-36.7
0.38
2.68
12/8/2005
3.9
0.909
7.62
159
5.63
0.51
3/8/2006
2.3
0.647
7.98
85.2
9.09
0.69
6/15/2006
12.9
1.085
7.61
36.9
0.93
12.6
9/6/2006
19.0
0.739
7.38
125
0.35
1.22
12/4/2006
6.8
0.734
7.45
39.2
2.21
0.57
3/26/2007
7.1
0.828
8.69
-113
5.26
1.90
6/12/2007
13.1
0.991
10.62
-123
0.73
3.13
9/5/2007
18.8
1.013
7.67
-101
0.25
2.03
11/27/2007
8.3
0.799
7.54
165
1.99
0.83
9/15/2008
17.9
1.303
7.64
-58.1
0.54
4.11
9/1 6/2009
17.8
1.060
7.75
-9.8
0.24
3.75
9/8/2010
18.8
1.221
7.57
-84.7
0.46
11.3
9/28/2011
18.4
1.494
7.74
44.5
0.65
16.1
9/12/2012
20.0
2.309
8.11
-15.5
0.29
2.57
9/10/2013
17.1
1.647
6.42
-268
0.17
2.00
9/22/2014
16.2
1.498
7.05
-106
0.22
2.39
9/15/2015
16.1
1.224
7.28
-86.5
-
2.01
9/19/2016
17.9
1.124
7.09
-25.6
1.11
0.99
9/6/2017
16.1
1.257
7.14
-135
0.79
2.62
11/7/2018
NS
NS
NS
NS
NS
NS
10/22/2019
15.2
1.461
7.13
-214
2.45
2.20
Page 6 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Oxidation-
Specific Reduction Dissolved
Temperature Conductance Potential Oxygen Turbidity
Well No. Date (°C) (mS/cm) pH (mV) (mg/L) (NTU)
MW-14R/ 3/27/2003 10.6 1.164
MW-14RR 6/25/2003 13.4 7.943
9/16/2003 -- 1.359
12/3/2003 15.3 1.088
3/23/2004 12.1 1.055
6/16/2004 13.5 1.868
9/15/2004 15.8 1.710
12/27/2004 14.4 1.710
3/21/2005 9.8 0.846
6/13/2005 12.9 1.234
9/13/2005 1 6.7 1.438
12/12/2005 14.9 1.007
3/8/2006 8.7 0.666
6/15/2006 11.7 1.273
9/6/2006 15.5 1.198
12/5/2006 14.4 0.830
3/26/2007 11.0 0.853
6/12/2007 12.4 1.391
9/4/2007 16.6 1.667
11/27/2007 15.5 0.845
9/15/2008 15.4 1.840
9/16/2009 15.9 1.622
9/8/2010 15.7 1.545
9/28/2011° 16.1 2.574
9/12/2012
9/10/2013 17.1 2.355
9/23/2014 14.3 2.666
9/16/2015 17.1 2.884
9/19/2016 16.6 2.308
9/6/2017 15.4 1.889
11/7/2018 13.7 2.499
10/22/2019 15.2 2.191
7.57
239
0.68
0.02
8.03
27.8
0.34
5.20
7.20
2.60
0.37
4.36
6.91
30.2
5.38
5.17
7.00
-36.4
0.33
2.35
6.84
-43.7
1.29
6.35
7.24
-99.0
0.10
12.7
7.00
-81.6
0.26
8.53
7.48
-171
2.34
15.2
7.13
-67.1
0.60
4.78
6.95
-29.1
0.20
6.24
7.82
79.6
0.13
7.33
7.53
62.8
1.71
12.8
6.86
56.1
0.56
11.0
7.04
189
0.14
10.4
7.21
-29.0
0.61
3.36
7.66
-168
0.67
14.7
9.65
-81.0
0.10
8.49
7.34
-87.2
0.29
12.0
7.24
31.4
0.85
57.5
7.15
-51.6
0.33
43.2
7.31
1.4
0.12
1.58
6.92
-165
0.48
2.06
7.26
86.2
4.30
>1000
7.07
-61.9
2.25
64.9
6.65
-32.4
1.41
34.0
7.08
24.1
-
11.6
6.70
-1.9
0.27
2.38
6.59
-95.0
-
19.8
6.79
-39.0
1.77
3.2
6.80
-320
0.19
0.7
Page 7 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Oxidation-
Specific Reduction Dissolved
Temperature Conductance Potential Oxygen Turbidity
Well No. Date (°C) (mS/cm) pH (mV) (mg/L) (NTU)
MW-23R/ 3/26/2003 10.2 1.457
MW-23RR 6/24/2003 13.1 3.657
9/16/2003 -- 2.939
12/3/2003 12.3 1.673
3/23/2004 10.5 1.296
6/16/2004 11.8 2.072
9/15/2004 13.8 1.420
12/28/2004 11.8 1.510
3/22/2005 10.2 1.913
6/14/2005 11.4 2.298
9/14/2005 14.4 2.168
12/9/2005 12.0 1.856
3/7/2006 10.2 1.326
6/15/2006 11.9 2.335
9/6/2006 13.0 2.180
12/5/2006 12.7 1.878
3/27/2007 10.8 2.148
6/12/2007 12.1 2.138
9/5/2007 15.3 2.095
11/27/2007 13.0 2.008
9/16/2008 14.6 2.282
9/17/2009 13.9 2.024
9/8/2010 15.0 1.865
9/27/2011 14.2 1.885
9/12/2012 14.7 1.889
9/10/2013 14.3 2.239
9/23/2014 12.2 2.032
9/15/2015 13.3 2.064
9/19/2016 15.1 1.915
9/6/2017 13.1 1.984
11/7/2018 12.5 1.777
10/22/2019 13.0 1.750
9/29/2020 14.5 1.552
9/28/2021 16.3 1.515
7.29
-69.1
0.86
0.15
8.25
-98.4
0.16
7.18
7.21
-140
0.03
5.57
6.86
-86.3
4.18
0.91
7.02
-141
0.34
4.23
6.66
-76.2
1.39
8.91
7.13
-149
0.09
4.85
6.88
-144
0.16
4.54
7.60
-145
0.31
15.1
6.61
-104
0.48
4.79
6.84
-148
0.34
4.74
8.59
-112
0.09
3.46
7.60
-99.2
0.60
11.6
6.25
-69.5
0.93
5.54
6.92
53.3
0.31
9.32
7.03
-122
0.13
9.17
7.41
-154
0.17
35.0
9.48
-91.5
0.12
10.5
6.78
-62.8
0.23
7.36
7.04
-112
0.21
10.2
7.02
-52.0
0.33
3.04
7.66
-47.1
0.09
1.29
6.58
-62.5
0.65
1.63
6.98
-63.9
0.69
2.96
7.78
-11.5
0.44
2.18
6.57
-74.7
0.13
2.81
6.54
-93.7
0.39
9.32
6.85
-98.3
0.55
7.24
6.58
-41.9
0.23
5.89
6.36
-80.3
0.60
2.06
6.55
0.5
0.58
15.9
6.57
-338
0.20
7.71
6.63
-37.7
0.69
5.58
6.72
-158
0.02
9.40
Page 8 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Well No.
Date
Temperature
(°C)
Specific
Conductance
(mS/cm)
pH
Oxidation-
Reduction
Potential
(mV)
Dissolved
Oxygen
(mg/L)
Turbidity
(NTU)
MW-36
3/25/2003
9.4
1.014
6.85
107
0.91
0.05
6/24/2003
14.7
2.887
8.40
131
0.47
1.50
9/18/2003
17.4
1.992
6.99
-28.3
0.37
0.41
12/3/2003
12.8
0.904
6.78
114
6.26
1.33
3/24/2004
9.2
1.002
6.81
23.4
0.79
6.89
6/1 6/2004
12.2
1.241
6.70
42.2
1.43
12.3
9/14/2004
15.3
1.010
6.86
-11.2
1.17
5.75
12/21/2004
12.0
1.250
6.76
77.3
0.27
9.40
3/21/2005
9.4
1.028
7.08
-147
0.60
2.83
6/13/2005
12.7
1.165
6.84
-31.5
0.98
3.82
9/13/2005
16.5
1.022
6.52
40.1
0.31
1.38
12/8/2005
12.9
0.951
7.58
52.5
0.21
2.28
3/7/2006
9.2
0.702
7.29
38.1
0.77
-
6/15/2006
12.5
0.986
6.60
168
1.23
5.15
9/5/2006
15.4
0.951
6.87
211
0.31
3.11
12/4/2006
12.9
0.851
7.00
79.2
0.36
3.04
3/26/2007
10.7
0.933
7.84
-182
1.39
7.36
6/12/2007
12.2
1.151
11.01
-131
0.27
4.54
9/5/2007
16.3
1.176
6.97
32.2
0.34
1.50
11/26/2007
14.2
0.942
9.14
-206
0.25
2.17
9/15/2008
15.3
1.135
7.25
-40.5
0.74
1.11
9/1 6/2009
15.3
1.221
7.03
52.3
0.20
0.44
9/9/2010
15.2
1.072
6.57
218
0.53
0.86
9/27/2011
15.2
1.392
7.05
56.7
0.78
3.69
9/13/2012
16.0
1.198
8.09
274
0.28
0.55
9/10/2013
15.0
1.210
6.05
-79.2
0.21
0.90
9/22/2014
14.0
1.147
6.21
82.1
0.34
2.06
9/15/2015
14.0
1.298
6.79
168
0.12
2.10
9/19/2016
15.8
1.157
6.36
110
0.36
4.86
9/6/2017
14.8
1.361
6.40
-83.8
0.67
13.0
11/8/2018
NS
NS
NS
NS
NS
NS
10/22/2019
13.7
2.158
6.73
-310
0.19
39.4
Page 9 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Oxidation-
Specific Reduction Dissolved
Temperature Conductance Potential Oxygen Turbidity
Well No. Date (°C) (mS/cm) pH (mV) (mg/L) (NTU)
3/26/2003
9.9
1.920
7.44
-48.2
0.96
0.62
6/23/2003
12.5
3.903
8.08
-138
0.02
3.20
9/16/2003
--
1.162
7.31
-134
0.18
3.58
12/2/2003
13.8
0.902
7.14
-86.9
3.52
1.52
3/23/2004
10.5
1.175
7.14
-133
0.29
1.17
6/17/2004
11.5
2.604
6.97
-104
1.58
3.12
9/15/2004
13.6
2.040
7.39
-155
0.57
2.28
12/28/2004
12.6
1.970
7.14
-183
0.17
1.64
3/22/2005
10.3
1.342
6.62
-122
0.18
0.72
6/14/2005
11.3
2.297
6.92
-137
0.14
1.35
9/14/2005
14.3
2.424
7.03
-162
0.39
2.42
12/9/2005
13.0
1.742
7.78
-143
0.08
1.81
3/7/2006
10.4
0.828
7.70
-117
0.40
3.74
6/16/2006
11.3
2.106
6.64
-106
1.20
1.42
9/6/2006
13.6
1.725
7.01
71.9
0.16
2.43
12/5/2006
12.7
1.090
7.21
-164
0.12
6.38
3/27/2007
10.5
0.932
7.04
-153
0.44
28.2
6/12/2007
11.3
2.156
11.14
-146
0.15
3.41
9/5/2007
15.3
2.523
7.41
-134
0.15
11.8
11/27/2007
13.3
1.597
7.19
-143
0.18
12.4
9/16/2008
13.1
2.486
6.87
-96.8
0.47
3.77
9/17/2009
12.9
2.387
7.91
-87.5
0.07
0.74
9/8/2010
13.3
2.310
6.74
-107
0.40
1.51
9/27/2011
13.0
2.226
7.15
-93.9
0.68
1.96
9/12/2012
13.5
2.129
7.00
4.3
1.08
0.62
9/10/2013
13.2
2.769
7.06
-149
0.17
1.54
9/23/2014
11.8
2.617
6.55
-78.6
0.29
41.0
9/16/2015
13.4
2.367
7.03
46.9
0.39
7.95
9/20/2016
13.5
2.196
6.71
-58.2
1.09
16.3
9/6/2017
11.8
2.090
6.40
-87.4
0.33
15.0
11/8/2018
12.2
2.997
6.72
-67.1
0.45
29.1
10/23/2019
12.4
2.213
6.41
-147
0.12
45.2
9/29/2020
12.3
2.069
6.85
-102
0.84
6.00
9/28/2021
13.6
1.939
6.80
-156
0.08
6.14
Page 10 of 11
-------
TABLE 3-1
WELL STABILIZATION SUMMARY
Oxidation-
Specific
Reduction
Dissolved
Temperature
Conductance
Potential
Oxygen
Turbidity
Well No.
Date
fc)
(mS/cm)
pH
(mV)
(mg/L)
(NTU)
MW-40
11/7/2018
NS
NS
NS
NS
NS
NS
12/12/2018
NS
NS
NS
NS
NS
NS
10/23/2019
NS
NS
NS
NS
NS
NS
9/30/2020
NS
NS
NS
NS
NS
NS
9/29/2021
NS
NS
NS
NS
NS
NS
MW-41
11/7/2018
10.9
1.854
6.68
-57.4
0.40
27.3
12/12/2018
9.8
1.920
6.70
-50.2
0.88
9.6
10/23/2019
11.0
1.780
6.21
-220
0.13
22.9
9/29/2020
11.9
1.752
6.69
-41.1
0.51
8.05
9/28/2021
13.7
1.481
6.75
-158
0.11
22.6
MW-42
9/30/2020
12.3
1.316
6.89
-289
0.49
6.09
9/29/2021
14.0
1.206
6.99
-437
0.00
14.9
MW-43
9/30/2020
14.9
0.983
6.98
-223
0.68
352
9/29/2021
16.8
0.807
7.16
-382
0.01
32.4
MW-44
11/9/2021
12.8
1.554
6.88
-4.7
0.02
7.31
12/9/2021
12.4
1.393
6.98
-111
0.03
6.60
MW-45
11/10/2021
12.0
1.422
7.01
-27.6
0.34
7.45
12/9/2021
11.9
1.264
7.04
-158
0.03
5.89
Notes:
= Based on a single reading and not likely representative of stable conditions. mg/L = Milligram (s) per liter.
°C = Degrees Celsius. mV = Millivolt(s). mS/cm = MilliSiemens per centimeter.
NTU = Nephelometric turbidity units. NS = Not sampled. - = Indicates parameter not measured.
Page 11 of 11
-------
TABLE 3-2
GROUNDWATER ANALYTICAL RESULTS
Sample ID:
Date:
MW02R-GW-043
Sep-21
MW04-GW-043
Sep-21
MW06 R-GW-043
Sep-21
MW08R-GW-043
Sep-21
MW09-GW-043
Sep-21
MW10-GW-043
Sep-21
MW23RR-GW-043
Sep-21
MW37-GW-043
Sep-21
MW40-GW-043
Sep-21
Performance
Como/iance Parameters
Units
Standard
Benzene
mq/l
5.0
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
NS
Ethylbenzene
mq/l
NE
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
NS
Toluene
mq/l
NE
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
NS
Xylenes
mq/l
NE
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
NS
Acenaphthene
mq/l
NE
2.90
0.0667 U
0.0379 J
61.7
53.7
0.0371 J
3.51
0.293
NS
Acenaphthylene
M9/L
NE
1.08
0.139 J
0.0292 U
14.5
4.26
0.0289 U
1.74
0.0622 J
NS
Anthracene
mq/l
NE
0.0846 J
0.0733 U
0.0344 U
0.475
0.158
0.0340 U
0.979
0.0340 U
NS
Benzo(a)anthracene
mq/l
0.1
0.0323 U
0.0667 U
0.0313 U
0.0744 J
0.133
0.0309 U
0.237
0.0309 U
NS
Benzo(a)pyrene
mq/l
0.2
0.0344 U
0.0711 U
0.0333 U
0.0775 J
0.0337 U
0.0330 U
0.0604 J
0.0330 U
NS
Benzo(b)fluoranthene
mq/l
0.2
0.0409 U
0.0844 U
0.0396 U
0.0548 J
0.0400 U
0.0392 U
0.0498 J
0.0392 U
NS
Benzo(g,hj) perylene
mq/l
NE
0.051 6 U
0.107 U
0.0500 U
0.0505 U
0.0505 U
0.0495 U
0.0500 U
0.0495 U
NS
Benzo(k)fluoranthene
mq/l
0.2
0.0430 U
0.0889 U
0.041 7 U
0.0421 U
0.0421 U
0.0412 U
0.0417 U
0.0412 U
NS
Chrysene
mq/l
0.2
0.0484 U
0.100 U
0.0469 U
0.0474 U
0.0735 J
0.0464 U
0.168
0.0464 U
NS
Dibenzo(a,h)anthracene
mq/l
0.033
0.0430 U
0.0889 U
0.041 7 U
0.0421 U
0.0421 U
0.0412 U
0.0417 U
0.0412 U
NS
Fluoranthene
mq/l
NE
0.181
0.0711 U
0.0333 U
0.266
2.11
0.0330 U
1.58
0.0330 U
NS
Fluorene
mq/l
NE
0.400
0.0667 U
0.0313 U
6.62
1.00
0.0309 U
0.316
0.0309 U
NS
lndeno(1,2,3-cd)pyrene
mq/l
0.4
0.051 6 U
0.107 U
0.0500 U
0.0505 U
0.0505 U
0.0495 U
0.0500 U
0.0495 U
NS
2-Methylnaphthalene
mq/l
63.0
0.0430 U
0.275
0.041 7 U
0.0831 J
0.0421 U
0.0412 U
0.0417 U
0.0412 U
NS
Naphthalene
mq/l
1.4
0.247 J
4.41
0.536
1.30
0.211 U
0.206 U
0.394 J
0.206 U
NS
Phenanthrene
mq/l
NE
0.0600 J
0.0889 U
0.041 7 U
0.519
0.0801 J
0.0412 U
0.933
0.0412 U
NS
Pyrene
mq/l
NE
0.215
0.0733
0.0344 U
0.308
2.46
0.0340 U
2.00
0.0778 J
NS
Page 1 of 2
-------
TABLE 3-2
GROUNDWATER ANALYTICAL RESULTS
MW41-GW-043 MW42-GW-043 MW43-GW-043 MW44-GW-043A MW44-GW-043B MW45-GW-043A MW45-GW-043B
Sep-21 Sep-21 Sep-21 Nov-21 Dec-21 Nov-21 Dec-21
Compliance Parameters Units
Benzene
mq/l
0.500 U
102
15,400
0.500 U
0.500 U
1.25
0.500 U
Ethylbenzene
mq/l
1.00 u
855
1,900
1.00 U
1.00 U
1.74
1.00 U
Toluene
mq/l
1.00 u
101
6,960
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
3.00 U
508
2,220
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
4.57
141
9.49
0.134
0.0667 J
1.00
0.281
Acenaphthylene
mq/l
1.05
30.3
141
0.0286 U
0.0280 U
0.0853 J
0.0286 U
Anthracene
M9/L
0.0330 U
4.13
4.59
0.0337 U
0.0330 U
0.0340 U
0.0337 U
Benzo(a)anthracene
M9/L
0.0300 U
0.0575 J
0.984
0.0306 U
0.0300 U
0.0309 U
0.0306 U
Benzo(a)pyrene
M9/L
0.0320 U
0.0333 U
0.741
0.0327 U
0.0320 U
0.0330 U
0.0327 U
Benzo(b)fluoranthene
M9/L
0.0380 U
0.0396 U
0.488
0.0388 U
0.0380 U
0.0392 U
0.0388 U
Benzo(g,h,i) perylene
M9/L
0.0484 U
0.0500 U
0.344
0.0490 U
0.0480 U
0.0495 U
0.0490 U
Benzo(k)fluoranthene
M9/L
0.0400 U
0.0417 U
0.225
0.0408 U
0.0400 U
0.0412 U
0.0408 U
Chrysene
M9/L
0.0450 U
0.0469 U
0.688
0.0459 U
0.0450 U
0.0464 U
0.0459 U
Dibenzo (a, h) anthracene
M9/L
0.0400 U
0.0417 U
0.0858 J
0.0408 U
0.0400 U
0.0412 U
0.0408 U
Fluoranthene
M9/L
0.0320 U
1.18
3.02
0.0327 U
0.0320 U
0.0373 J
0.0327 U
Fluorene
M9/L
0.178
52.9
23.1
0.0306 U
0.0300 U
0.0610 J
0.0306 U
lndeno(1,2,3-cd) pyrene
M9/L
0.0480 U
0.0500 U
0.249
0.0490 U
0.0480 U
0.0495 U
0.0490 U
2-Methylnaphthalene
M9/L
0.0400 U
7.52
288
0.0408 U
0.0400 U
0.0412 U
0.0408 U
Naphthalene
M9/L
0.313 J
1,260
3,070
0.204 U
0.200 U
0.206 U
0.204 U
Phenanthrene
M9/L
0.0400 U
40.8
22.2
0.0408 U
0.0400 U
0.0816 J
0.0408 U
Pyrene
M9/L
0.0627 J
1.13
3.95
0.0337 U
0.0330 U
0.0340 U
0.0337 U
Notes:
Data in blue indicate concentrations exceeding the respective groundwater protection standard. Nondetect values above the
groundwater protection standards are not highlighted.
a Suspected carcinogenic polynuclear aromatic hydrocarbon.
|jg/L = Microgram(s) per liter.
J = Analyte detected at a level less than the reporting limit but greater than or equal to the method detection limit. Concentrations
within this range are estimated.
NE = Not established.
NS = Not sampled.
U = Compound not detected at or above the value reported.
Page 2 of 2
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW02-GW-004
MW02R-GW-005
MW02R-GW-006
MW02R-GW-007
MW02R-GW-008
MW02R-GW-NA1
MW02R-GW-00?
MW02R-GW-010
MW02R-GW-011
Date:
Aug-95
Dec-96
May-97
Nov- 97
May-98
Jul-??
Nov-01
Mar-03
Jun-03
Dam Position:
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.1305
0.0050 U
0.0228
0.1584
0.0149
NA
0.0040 U
0.0040 U
0.0040 U
Benzene
mq/l
1,320
1,410
621
406
148
144
22?
152
262
Ethylbenzene
mq/l
332
446
458
268
139
140
40
242
139
Toluene
mq/l
122
267
230
94
28.7
28
212
29.4
24.4
Xylenes
mq/l
459
862
842
480
232
219
203
184
162
Acenaphthene
mq/l
120
59
92.9
70
11.1
20. U
55.1
63.6
32.6
Acenaphthylene
mq/l
10 U
12.3
2.1 U
73.2
7.5
2. U
67.2
17
34.2
Anthracene
mq/l
38
6.21
9.47
12.5
1.82
5.2
6.61
5.3
2.4
Benzo(a) anthracene
mq/l
4.7
0.6
0.86 U
2.57
1.08
0.4
0.53
0.73 U
0.13 U
Benzo(a) pyrene
mq/l
3.2
0.38
2.2 U
0.714
0.056 U
0.3
0.37
1.1 U
0.19 U
Benzo(b)fluoranthene
M9/L
1.3
0.15 U
0.3? U
0.725
0.056 U
0.1
0.10 u
0.56 U
0.10 U
Benzo(g,h,i)perylene
M9/L
1.2
0.23
1.6 U
1.48
0.056 U
0.1 u
0.2
0.56 U
0.10 U
Benzo(k)fluoranthene
M9/L
0.63
0.12 U
0.63 U
0.054 U
0.3
0.1
0.10 U
0.56 U
0.10 U
Chrysene
M9/L
4.3
0.34
0.57 U
5.43
0.553
0.7
0.27
0.56 U
0.10 u
Dibenzo(a,h) anthracene
M9/L
0.3 U
0.13 U
0.52 U
0.054 U
0.056 U
0.1 U
0.10 U
0.56 U
0.10 u
Fluoranthene
M9/L
19
4.07
3.9
9.04
5.55
2. U
2.21
3
0.19 U
Fluorene
M9/L
100
34.6
36.4
54.7
7.8
2.1
33.5
31.8
16.6
lndeno(1,2,3-cd) pyrene
M9/L
1.1
0.13
1.4 U
1
0.056 U
0.1 U
0.10 U
0.56 U
0.10 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
10 U
4.3
1,330
898
35
2. U
1.03
3.?
613
Phenanthrene
M9/L
130
3.13
42.4
52.7
6.11
1.7
32
18.3
11.4
Pyrene
M9/L
5.5
2.76
2.9 U
6.71
2.37
6.6
0.49
1.9
1.9
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NA
NA
0.007 U
0.010 U
0.008 U
Ethane
mg/L
NS
NS
NS
NS
NA
NA
0.007 U
0.010 U
0.008 U
Methane
mg/L
NS
NS
NS
NS
0.58
0.008 U
0.38
0.273
0.3
Alkalinity
mg/L
NS
NS
NS
NS
161
46
209
243
147
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
1.35
1.11
1.0 U
1.0 U
0.77
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
10 U
1.93
10 U
10 U
1.09
Orthophosphate
mg/L
NS
NS
NS
NS
0.1 U
0.3 U
0.51
0.69
0.92
Sulfide, Total
mg/L
NS
NS
NS
NS
0.1 U
0.1 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
NS
NS
NS
NS
5.6
3.3
4.7
4.4
4
Chloride
mg/L
NS
NS
NS
NS
93
19
26.1
37.5
27.8
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
0.1 U
0.2
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
0.1 U
1.7
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
NS
NS
NS
NS
359
803
172
106
440
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
0.114
0.18
0.168
0.16
Page 1 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW02R-GW-012
MW02R-GW-013
MW02R-GW-014
MW02R-GW-015
MW02R-GW-01A
MW02R-GW-017
MW02R-GW-018
MW02R-GW-01?
MW02R-GW-020
Date:
Sep-03
Dec-03
Mar-04
Jun-04
Sep-04
Dec-04
Mar-05
Jun-05
Sep-05
Dam Position:
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.0015 U
0.0015 U
0.00151 B
0.00050 U
0.00050 U
0.00050 U
0.0016 U
NS
NS
Benzene
mq/l
203
18?
187
51.3
182
15?
183
152
248
Ethylbenzene
mq/l
294
304
298
57
162
177
327
140
212
Toluene
mq/l
40.4
41.9
43.9
7.32
22.4
24.2
46.5
19.4
30.3
Xylenes
mq/l
250
239
237
52.5
146
142
246
149
196
Acenaphthene
mq/l
52.4
127
91.6
4.94
37.8
72.1
81
53.1
42.2
Acenaphthylene
mq/l
35.6
119
53
0.12 U
40.3
72.3
0.18 U
0.17 U
0.18 U
Anthracene
mq/l
5.58
14.7
12
0.044
2.87
6.16
8.74
4.98
5.15
Benzo(a) anthracene
mq/l
0.234
1.1
0.282
0.034 U
0.34 U
0.34 U
0.1 ?8
0.127
0.125
Benzo (a) pyren e
mq/l
0.050 U
0. ?83
0.029 U
0.030 U
0.30 U
0.30 U
0.020 U
0.019 U
0.048
Benzo(b)fluoranthene
mq/l
0.035 U
0.454
0.038 U
0.039 U
0.40 U
0.3? U
0.038 U
0.038 U
0.038 U
Benzo(g, h,i) perylene
mq/l
0.035 U
0.719
0.036 U
0.037 U
0.37 U
0.37 U
0.033 U
0.033 U
0.033 U
Benzo(k)fluoranthene
mq/l
0.038 U
0.311
0.14 U
0.14 U
1.5 U
1.4 U
0.024 U
0.023 U
0.024 U
Chrysene
mq/l
0.09
0.?3
0.175
0.031 U
0.31 U
0.31 U
0.021 U
0.069
0.11
Dibenzo(a,h) anthracene
mq/l
0.03? U
0.0?7
0.025 U
0.026 U
0.26 U
0.26 U
0.034 U
0.034 U
0.034 U
Fluoranthene
mq/l
5.23
0.049 U
6.8
0.27
0.70 U
0.68 U
5.74
3.27
4.32
Fluorene
mq/l
42.3
70.8
62.6
0.027 U
24
31
45.7
34.1
27.8
lndeno(l,2,3-cd) pyrene
mq/l
0.034 U
0.562
0.038 U
0.039 U
0.40 U
0.39 U
0.040 U
0.039 U
0.039 U
2-Methylnaphthalene
mq/l
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
mq/l
32.2
2,430
1,840
0.043 U
?84
1,240
1,880
0.10 U
0.10 U
Phenanthrene
mq/l
39.8
66.9
53.4
0.019 U
16
32.5
42.2
21.6
21.8
Pyrene
mq/l
2.45
6.06
2.73
0.2
1.1 U
2.35
0.037 U
10.6
10.5
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
Methane
mg/L
0.714
0.522
0.384
0.047
0.227
0.204
0.64
0.265
0.3
Alkalinity
mg/L
296
264
244
75
136
254
NA
155
205
Nitrogen, Ammonia
mg/L
0.92
1.02
0.9
0.45
0.7
0.63
0.66
0.55
0.67
Nitrogen, Total Kjeldahl
mg/L
1.09
2.34
1.26
0.69
0.9
0.98
0.98
0.86
1.04
Orthophosphate
mg/L
0.67
0.57
0.47
0.30 U
0.46
0.43
0.71
0.30 U
0.6
Sulfide, Total
mg/L
0.10 U
0.10 U
0.010 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
4.7
3.3
3.3
2.8
3.9
4.3
4.4
3.2
4.65
Chloride
mg/L
32.6
34
47.6
14.2
19.5
27.9
41.5
27.7
21.3
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
69.2
74.5
104
1,080
842
258
74.2
535
330
Iron, Dissolved
mg/L
0.169
0.229
0.256
0.100 U
0.322
0.213
0.14
0.127
0.306
Page 2 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW02R-GW-021
MW02R-GW-022
MW02R-GW-023
MW02R-GW-024
MW02R-GW-025
MW02R-GW-026
MW02R-GW-027
MW02R-GW-028
MW02R-GW-02?
Date:
Dec-05
Mar-06
Jun-06
Sep-06
Dec-06
Mar-07
Jun-07
Sep-07
Nov-07
Dam Position:
Dam Up
Dam Up
Dam Down
Dam Down
Dam Up
Dam Up
Dam Down
Dam Down
Dam Up
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
186
208
190
243
157
134
121
145
158
Ethylbenzene
mq/l
217
320
158
328
279
270
112
87.4
216
Toluene
mq/l
33.1
36.6
19.6
34.1
34.4
22.6
13.2
20.0 U HI
26.4
Xylenes
mq/l
181
244
155
218
183
169
122
94.8
153
Acenaphthene
mq/l
80.4
89.7
25.4
68.3
99.6
60.5
47.9
34.0
76.9
Acenaphthylene
mq/l
16
0.1 70 U
0.0580 U
68.2
0.0850 U
8.62
0.0850 U
6.41
0.0850 U
Anthracene
mq/l
8.73
7.29
0.0100 U
7.77
11.2
5.92
4.27
2.11
7.51
Benzo(a) anthracene
mq/l
0.138
0.121 U
0.0631 J
0.13?
0.231
0.0886 J
0.0923 J
0.0602 J
0.134
Benzo(a) pyrene
mq/l
0.0370 U
0.0370 U
0.119
0.0320 U
0.0930 J
0.0320 U
0.0544 J
0.0320 U
0.0660 J
Benzo(b)fluoranthene
M9/L
0.0230 U
0.0230 U
0.0130 U
0.0130 U
0.0748 J
0.0130 U
0.0394 J
0.0130 U
0.0130 U
Benzo(g,h,i) perylene
M9/L
0.0535
0.0295
0.0178 J
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
Benzo(k)fluoranthene
M9/L
0.0320 U
0.0320 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
Chrysene
M9/L
0.164
0.139
0.0697 J
0.141
0.158
0.0777 J
0.106
0.0748 J
0.153
Dibenzo(a,h) anthracene
M9/L
0.0330 U
0.0330 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Fluoranthene
M9/L
4.43
4.22
1.68
4.11
6.34
3.70
3.36
1.97
4.93
Fluorene
M9/L
53
48.9
4.06
47.3
71.1
37.8
31.8
19.8
64.9
lndeno(1,2,3-cd) pyrene
M9/L
0.0380 U
0.0380 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.0250 J
2-Methylnaphthalene
M9/L
5.28
170
0.291
170
142
4.61
47
2.26
130
Naphthalene
M9/L
2.46
387
0.831
1,500
250
1.05
121
0.698
1,530
Phenanthrene
M9/L
37.3
37.2
0.00700 U
37.4
52.7
25.5
15.7
7.36
47.4
Pyrene
M9/L
15.3
0.0360 U
1.77
14.7
21.4
10.3
7.74
3.67
2.86
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.013 U
0.010 U
0.007 U
0.008 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.013 U
0.010 U
0.007 U
0.008 U
Methane
mg/L
0.551
0.862
0.346
0.568
0.902
0.549
0.212
0.206
0.713
Alkalinity
mg/L
297
254
182
302
291
225
180
152
326
Nitrogen, Ammonia
mg/L
0.65
0.86
0.64
0.92
1.06
0.72
0.58
0.40
0.77
Nitrogen, Total Kjeldahl
mg/L
1.15
1.32
0.89
1.33
1.42
1.24
1.05
1.04
1.42
Orthophosphate
mg/L
0.56
0.59
0.31
0.72
0.67
0.51
0.36
0.33
0.69
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
5.41
6.67
2.86
4.97
3.87
3.06
3.62
4.26
4.37
Chloride
mg/L
29
35.0
26.7
30.6
32.1
47.0
36.6
20.7
28.1
Nitrogen, Nitrate
mg/L
0.1 U
0.4
0.5 U
0.1 U
0.1 U
0.3
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.5 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
95.1
57.8
306
45.4
33.4
130
295
660
54.3
Iron, Dissolved
mg/L
0.189
0.253
0.089
0.266
0.268
0.198
0.048
0.100 U
0.305
Page 3 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW02R-GW-030
MW02R-GW-031
MW02R-GW-032
MW02R-GW-033
MW02R-GW-034
MW02R-GW-035
MW02R-GW-036
MW02R-GW-037
MW02R-GW-038
Date:
Sep-08
Sep-09
Sep-10
Sep-11
Sep-12
Sep-13
Sep-14
Sep-15
Sep-16
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
114
257
850
297
1170
164
10.2
1.58
0.500 U
Ethyl benzene
mq/l
125
166
273
105
184 C9
46.5
2.48
1.00 U
1.00 U
Toluene
mq/l
10.0 U
20.0 U
11.5
10.0 U
8.33
3.02
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
81.0
125.0
158
45
50.3 C9
11.9
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
65.4
51.3
58.5
67.0
43.1
17.9 B
6.20
1.87
0.944
Acenaphthylene
mq/l
0.0850 U
0.0870 U
2.50
0.0870 U
15.0
4.29
1.31
0.666
0.435
Anthracene
mq/l
4.50
4.26
6.16
6.92
3.69
0.882 B
0.413
0.154
0.0423 J
Benzo(a) anthracene
mq/l
0.130
0.102
0.0881 J
0.0667 J
0.0331 J
0.0583 J, B
0.0585 J,B
0.0908 J
0.0140 U
Benzo(a) pyrene
mq/l
0.0658 J
0.0809 J
0.124
0.0661 J
0.0470 J
0.0236 J, B
0.0308 J
0.178
0.0140 U
Benzo(b)fluoranthene
M9/L
0.0130 U
0.0280 U
0.0973 J
0.0280 U
0.0280 U
0.0194 J, B
0.0278 J,B
0.123
0.0147 U
Benzo(g,h,i)perylene
M9/L
0.00900 U
0.0246 J
0.0690 J
0.00800 U
0.00800 U
0.0157 J, B
0.0279 J,B
0.123
0.0111 J
Benzo(k)fluoranthene
M9/L
0.0150 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.0136 J, B
0.0139 U
0.0510 J
0.0110 U
Chrysene
M9/L
0.177
0.133
0.132
0.0783 J
0.0449 J
0.0299 J, B
0.0200 J,B
0.0918 J
0.0118 U
Dibenzo(a,h) anthracene
M9/L
0.0100 U
0.0100 U
0.0293 J
0.0100 U
0.0100 U
0.01 16 U
0.0180 J,B
0.0205 J
0.00956 U
Fluoranthene
M9/L
3.67
3.03
2.57
2.77
1.64
0.380 B
0.309
0.221
0.0390 J
Fluorene
M9/L
47.8
41.3
40.5
45.4
26.1
6.66 B
1.45
0.214
0.175
lndeno(1,2,3-cd) pyrene
M9/L
0.00700 U
0.0194 J
0.0867 J
0.00600 U
0.00600 U
0.0152 U
0.0231 J,B
0.0797 J
0.0125 U
2-Methylnaphthalene
M9/L
5.70
2.18
0.0250 U
7.57 B
3.48
0.0555 J, B
0.0481 J
0.0367 J
0.0351 J
Naphthalene
M9/L
0.0540 U
0.933
0.0460 U
620 B
555
0.134 J, B
0.128 J
0.186 J
0.0493 J
Phenanthrene
M9/L
21.1
19.1
0.00500 U
31.6
21.8
3.31 B
1.28
0.292
0.106
Pyrene
M9/L
2.52
2.24
1.64
1.82
1.02
0.483 B
0.481
0.356
0.0492 J
MNA Parameters
Ethylene
mg/L
0.007 U
0.015 U
0.010 U
0.006 U
0.008 U
NS
NS
NS
NS
Ethane
mg/L
0.007 U
0.015 U
0.010 U
0.006 U
0.008 U
NS
NS
NS
NS
Methane
mg/L
0.233
0.424
0.266
0.202
0.521
NS
NS
NS
NS
Alkalinity
mg/L
226
251
292
331
354
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
0.71
1.13
0.69
0.65
1.04
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
1.12
0.50 U
0.78
0.79
0.79
NS
NS
NS
NS
Orthophosphate
mg/L
0.51
0.55
0.64
0.36
0.54
NS
NS
NS
NS
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
NS
NS
NS
NS
Total Organic Carbon
mg/L
4.41
5.60
5.90
4.33
7.12
NS
NS
NS
NS
Chloride
mg/L
27.2
18.1
10.6
9.7
20.9
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
NS
NS
NS
NS
Sulfate
mg/L
260
494
514
469
537
NS
NS
NS
NS
Iron, Dissolved
mg/L
0.215
0.756
0.763
0.495
1.31
NS
NS
NS
NS
Page 4 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW02R-GW-039
MW02R-GW-040
MW02R-GW-041
MW02R-GW-042
MW02R-GW-043
MW03-GW-004
MW03R-GW-005
MW03R-GW-006
Date:
Sep-17
Nov-18
Oct-19
Sep-20
Sep-21
Aug-95
Dec-96
May-97
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
0.0212
0.0164
0.1565
Benzene
mq/l
1.18
0.500 U
0.500 U
0.500 U
0.500 U
7.3
0.9
0.5 U
Ethylbenzene
mq/l
1.70
1.00 U
1.00 U
1.00 U
1.00 U
14.2
3.2
1.0 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.2
1.0 U
1.0 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
8
3.4
3.0 U
Acenaphthene
mq/l
5.35
0.324
0.111
1.60
2.90
18 U
24
0.48
Acenaphthylene
mq/l
1.63
0.281
0.0426 U
1.07
1.08
10 U
21.3
0.082 U
Anthracene
mq/l
0.0989 J
0.0259 U
0.0294 U
0.0305 U
0.0846 J
8
1.57
0.066
Benzo(a) anthracene
mq/l
0.0664 J
0.0696 U
0.0416 U
0.0432 U
0.0323 U
3.4
0.3
0.1
Benzo(a)pyrene
mq/l
0.150
0.0723 U
0.0365 U
0.0379 U
0.0344 U
2.8
0.21
0.12
Benzo(b)fluoranthene
M9/L
0.123
0.0946 U
0.0741 U
0.0768 U
0.0409 U
1.7
0.15 U
0.015 U
Benzo(g,h,i) perylene
M9/L
0.0954 J
0.0795 U
0.0487 U
0.0505 U
0.0516 U
1.1
0.18 U
0.1
Benzo(k)fluoranthene
M9/L
0.0390 J
0.0679 U
0.0579 U
0.0600 U
0.0430 U
1.2
0.12 U
0.024 U
Chrysene
M9/L
0.0510 J
0.0723 U
0.0690 U
0.0716 U
0.0484 U
1.5 U
0.19
0.05
Dibenzo(a,h) anthracene
M9/L
0.0190 J
0.100 U
0.0569 U
0.0589 U
0.0430 U
0.3 U
0.13 U
0.1
Fluoranthene
M9/L
0.160
0.0777 U
0.0640 U
0.0663 U
0.181
9.6
1.0 U
0.050 U
Fluorene
M9/L
0.943
0.320
0.0434 J
0.130
0.400
5.8
23.2
0.12 U
1 n den o (1,2,3- cd) pyre n e
M9/L
0.0888 J
0.113 U
0.0487 U
0.0505 U
0.0516 U
0.43 U
0.13 U
0.052 U
2-Methylnaphthalene
M9/L
0.0409 J
0.0768 U
0.0772 U
0.0800 U
0.0430 U
NA
NA
NA
Naphthalene
M9/L
0.809
0.175 U
0.396 U
0.411 U
0.247 J
10 U
7.14
0.24
Phenanthrene
M9/L
0.279
0.0830 U
0.0406 U
0.0421 U
0.0600 J
6.4 U
8.44
0.26
Pyrene
M9/L
0.253
0.0589 U
0.0447 U
0.0463 U
0.215
10
0.66
0.11 U
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Ethane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Methane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Chloride
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Page 5 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW03R-GW-007
MW03R-GW-008
MW03R-GW-NA1
MW03R-GW-00?
MW03R-GW-010
MW03R-GW-011
MW03R-GW-012
MW03R-GW-013
MW03R-GW-014
Date:
Nov- 97
May-98
Jul-??
Nov-01
Mar-03
Jun-03
Sep-03
Dec-03
Mar-04
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.1293
0.511
NA
0.0040 U
0.0040 U
0.0040 U
0.0015 U
0.0015 U
0.00091 B
Benzene
mq/l
0.5 U
0.5 U
1. U
1.0 U
0.5
0.5 U
0.25 U
0.25 U
0.25 U
Ethylbenzene
mq/l
1.0 U
1.0 U
1. U
1.0 U
1.0 U
1.0 U
0.43 U
0.43 U
0.43 U
Toluene
mq/l
1.0 U
1.0 U
1. U
1.0 U
1.0 U
1.0 U
0.25 U
0.25 U
1.6
Xylenes
mq/l
3.0 U
3.0 U
1. U
3.0 U
3.0 U
3.0 U
0.38 U
0.52
0.38 U
Acenaphthene
mq/l
0.535
0.239
2. U
1.71
0.91
0.19 U
0.031 U
1.88
0.297
Acenaphthylene
mq/l
0.14 U
0.14 U
2. U
2.82
0.61
0.19 U
0.055 U
1.71
0.663
Anthracene
mq/l
0.056 U
0.142
0.5 U
0.13
0.19 U
0.19 U
0.024 U
0.062
0.065
Benzo(a) anthracene
mq/l
0.111
0.081
0.1 U
0.10 U
0.13 U
0.13 U
0.028 U
0.028 U
0.033 U
Benzo(a)pyrene
mq/l
0.056 U
0.088
0.2
0.10 U
0.19 U
0.19 U
0.050 U
0.050 U
0.029 U
Benzo(b)fluoranthene
M9/L
0.056 U
0.056 U
0.1
0.10 U
0.10 U
0.10 U
0.035 U
0.035 U
0.038 U
Benzo(g, h,i) perylene
M9/L
0.069
0.072
0.2
0.10 U
0.10 U
0.10 U
0.035 U
0.035 U
0.036 U
Benzo(k)fluoranthene
M9/L
0.056 U
0.056 U
0.1 U
0.10 U
0.10 u
0.10 u
0.038 U
0.038 U
0.14 U
Chrysene
M9/L
0.056 U
0.056 U
0.1 U
0.10 U
0.10 u
0.10 u
0.032 U
0.032 U
0.030 U
Dibenzo(a,h) anthracene
M9/L
0.056 U
0.056 U
0.1 U
0.10 u
0.10 u
0.10 u
0.039 U
0.039 U
0.025 U
Fluoranthene
M9/L
0.064
0.166
0.2 U
0.10 u
0.19 U
0.19 U
0.049 U
0.049 U
0.067 U
Fluorene
M9/L
0.306
0.345
0.5 U
0.19 U
0.19 U
0.19 U
0.042 U
0.042 U
0.026 U
lndeno(l ,2,3-cd) pyrene
M9/L
0.056 U
0.056 U
0.1 U
0.10 u
0.10 U
0.10 U
0.034 U
0.034 U
0.038 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
0.669
4.01
2. U
1.56
0.72
0.42
0.054 U
1.6
0.173
Phenanthrene
M9/L
0.193
0.498
0.5 U
0.65
0.2
0.10 U
0.035 U
0.364
0.018 U
Pyrene
M9/L
0.14 U
0.142
0.2 U
0.19 U
0.19 U
0.19 U
0.099 U
0.099 U
0.11 U
MNA Parameters
Ethylene
mg/L
NS
NS
NA
0.007 U
0.010 U
0.010 U
0.007 U
0.010 U
0.010 U
Ethane
mg/L
NS
NS
NA
0.007 U
0.010 U
0.010 U
0.007 U
0.010 U
0.010 U
Methane
mg/L
NS
NS
0.007 U
0.165
0.064
0.012
0.005 U
0.012
0.007 U
Alkalinity
mg/L
NS
NS
38
93
147
46
210
126
105
Nitrogen, Ammonia
mg/L
NS
NS
1.04
1.0 U
1.0 U
0.2
0.14
0.29
0.25
Nitrogen, Total Kjeldahl
mg/L
NS
NS
0.704
10 U
10 U
0.64
0.31
0.4
0.38
Orthophosphate
mg/L
NS
NS
0.3 U
0.30 U
0.33
0.30 U
0.66
0.30 U
0.30 U
Sulfide, Total
mg/L
NS
NS
0.1 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
NS
NS
1.1
1.4
2
0.9
1.2
1.4
0.8
Chloride
mg/L
NS
NS
15
20.2
32.4
23.6
34.7
32.2
22.5
Nitrogen, Nitrate
mg/L
NS
NS
3
0.1 U
0.1 U
0.7
0.9
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
NS
NS
1.5
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
NS
NS
476
409
114
911
99.4
148
170
Iron, Dissolved
mg/L
NS
NS
0.03 U
0.030 U
0.030 U
0.030 U
0.030 U
0.030 U
0.030 U
Page 6 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW03R-GW-015
MW03R-GW-0U
MW03R-GW-017
MW03R-GW-018
MW03R-GW-019
MW03R-GW-020
MW03R-GW-021
MW03R-GW-022
MW03R-GW-023
Date:
Jun-04
Sep-04
Dec-04
Mar-05
Jun-05
Sep-05
Dec-05
Mar-06
Jun-06
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Dam Up
Dam Up
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.00050 U
0.0050 U
0.00050 U
0.0016 U
NS
NS
NS
NS
NS
Benzene
mq/l
0.25 U
0.25 U
0.59
0.25 U
0.170 U
0.10 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
0.43 U
0.43 U
0.74
0.43 U
0.63 U
0.44 U
1.00 U
1.00 U
1.00 U
Toluene
mq/l
0.25 U
0.25 U
0.25 U
0.25 U
0.09 U
0.09 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
0.38 U
0.38 U
0.64
0.38 U
0.93 U
0.24 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.076 U
0.166
0.89
0.13 U
0.13 U
0.13 U
0.130 U
0.130 U
0.0490 U
Acenaphthylene
mq/l
0.13 U
0.12 U
1.19
0.17 U
0.17 U
0.18 U
0.170 U
0.1 70 U
0.0850 U
Anthracene
mq/l
0.025 U
0.25 U
0.033
0.0094 U
0.0095 U
0.0096 U
0.00930 U
0.00930 U
0.0100 U
Benzo(a) anthracene
mq/l
0.034 U
0.034 U
0.034 U
0.019 U
0.019 U
0.020 U
0.0190 U
0.0190 U
0.00300 U
Benzo(a)pyrene
mq/l
0.030 U
0.030 U
0.030 U
0.019 U
0.019 U
0.020 U
0.0370 U
0.0370 U
0.0320 U
Benzo(b)fluoranthene
M9/L
0.040 U
0.040 U
0.039 U
0.037 U
0.038 U
0.038 U
0.0230 U
0.0230 U
0.0130 U
Benzo(g,h,i) perylene
M9/L
0.038 U
0.037 U
0.037 U
0.032 U
0.033 U
0.033 U
0.0190 U
0.0190 U
0.00900 U
Benzo(k)fluoranthene
M9/L
0.15 U
0.15 U
0.14 U
0.023 U
0.023 U
0.024 U
0.0320 U
0.0320 U
0.0150 U
Chrysene
M9/L
0.031 U
0.031 U
0.031 U
0.020 U
0.020 U
0.021 U
0.0200 U
0.0200 U
0.00500 U
Dibenzo(a,h) anthracene
M9/L
0.026 U
0.026 U
0.026 U
0.033 U
0.034 U
0.034 U
0.0330 U
0.0330 U
0.0100 U
Fluoranthene
M9/L
0.070 U
0.070 U
0.069 U
0.032 U
0.033 U
0.033 U
0.0320 U
0.0320 U
0.0100 U
Fluorene
M9/L
0.027 U
0.027 U
0.027 U
0.029 U
0.030 U
0.030 U
0.0290 U
0.0290 U
0.0100 u
1 n den o (1,2,3- cd) pyre n e
M9/L
0.040 U
0.040 U
0.039 U
0.038 U
0.039 U
0.039 U
0.0380 U
0.0380 U
0.00700 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
0.122 U
0.120 U
0.520 U
Naphthalene
M9/L
0.044 U
0.111
0.99
0.10 U
0.10 U
0.10 U
0.100 U
0.100 U
0.157 J
Phenanthrene
M9/L
0.019 U
0.019 U
0.17
0.015 U
0.015 U
0.015 U
0.0150 U
0.0150 U
0.0185 J
Pyrene
M9/L
0.11 U
0.11 U
0.11 U
0.036 U
0.037 U
0.037 U
0.0360 U
0.0360 U
0.0190 U
MNA Parameters
Ethylene
mg/L
0.008 U
0.010 U
0.010 U
0.008 U
0.008 U
0.010 U
0.016 U
0.010 U
0.013 U
Ethane
mg/L
0.008 U
0.010 U
0.010 U
0.008 U
0.008 U
0.010 U
0.016 U
0.010 U
0.013 U
Methane
mg/L
0.006 U
0.007
0.045
0.006 U
0.007
0.007 U
0.011 U
0.007 U
0.009 U
Alkalinity
mg/L
94
49
129
NA
71
107
230
224
96
Nitrogen, Ammonia
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
Nitrogen, Total Kjeldahl
mg/L
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
Orthophosphate
mg/L
0.30 U
0.30 U
0.30 U
0.30
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
1.4
1.4
1.7
1.0
0.9
1.24
1.02
0.95
0.89
Chloride
mg/L
11.4
10.3
13
38
22.9
15.6
28.8
38.0
32.9
Nitrogen, Nitrate
mg/L
1.6
0.2
0.1 U
4.3
1.3
0.2
6.9
5.9
2.9
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.8
0.1
0.1 U
0.1 U
0.4
Sulfate
mg/L
1,250
1,870
1,100
116
451
53.7
138
51.0
327
Iron, Dissolved
mg/L
0.100 U
0.030 U
0.044
0.030 U
0.030 U
0.030 U
0.030 U
0.030 U
0.030 U
Page 7 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW03R-GW-024
MW03R-GW-025
MW03R-GW-026
MW03R-GW-027
MW03R-GW-028
MW03R-GW-02?
MW04-GW-004
MW04-GW-005
Date:
Sep-06
Dec-06
Mar-07
Jun-07
Sep-07
Nov-07
Aug-95
Dec-96
Dam Position:
Dam Down
Dam Up
Dam Up
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
0.0050 U
0.0050 U
Benzene
mq/l
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
8.6
3.4
Ethylbenzene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.0 U
1.0 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.0 u
1.0 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
1.0 u
3.0 U
Acenaphthene
mq/l
0.137 J
0.0490 U
0.0490 U
0.0490 U
0.0490 U
0.0490 U
18 U
0.50 U
Acenaphthylene
mq/l
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
10 U
2.34
Anthracene
mq/l
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
6.6 U
0.30 U
Benzo(a) anthracene
mq/l
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.13 U
0.055 U
Benzo(a)pyrene
mq/l
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.23 U
0.10 U
Benzo(b)fluoranthene
M9/L
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.18 U
0.15 U
Benzo(g,h,i) perylene
M9/L
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.76 U
0.18 U
Benzo(k)fluoranthene
M9/L
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.17 U
0.12 U
Chrysene
M9/L
0.00500 U
0.00500 U
0.00500 U
0.00500 U
0.00500 U
0.00500 U
1.5 U
0.060 U
Dibenzo(a,h) anthracene
M9/L
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.3 U
0.13 U
Fluoranthene
M9/L
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
2.1 U
0.10 u
Fluorene
M9/L
0.0627 J
0.0100 u
0.0100 u
0.0100 u
0.0100 u
0.0100 u
2.1 U
0.75
lndeno(1,2,3-cd) pyrene
M9/L
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.43 U
0.13 U
2-Methylnaphthalene
M9/L
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
NA
NA
Naphthalene
M9/L
0.0890 J
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
10 U
0.38 U
Phenanthrene
M9/L
0.0384 J
0.00982 J
0.00700 U
0.00700 U
0.00700 U
0.00700 U
6.4 U
0.060 U
Pyrene
M9/L
0.0190 U
0.0190 U
0.0190 U
0.0190 U
0.0190 U
0.0190 U
2.7 U
0.084 U
MNA Parameters
Ethylene
mg/L
0.015 U
0.010 U
0.010 U
0.007 U
0.010 U
0.010 U
NS
NS
Ethane
mg/L
0.015 U
0.010 U
0.010 U
0.007 U
0.010 U
0.010 U
NS
NS
Methane
mg/L
0.013
0.007 U
0.007 U
0.005 U
0.007 U
0.007 U
NS
NS
Alkalinity
mg/L
177
226
229
120
82
277
NS
NS
Nitrogen, Ammonia
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
NS
NS
Nitrogen, Total Kjeldahl
mg/L
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.66
NS
NS
Orthophosphate
mg/L
0.30 U
0.30 U
0.30 U
0.17
0.10 U
0.16
NS
NS
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
NS
NS
Total Organic Carbon
mg/L
1.26
0.78
0.92
1.41
1.41
1.19
NS
NS
Chloride
mg/L
30.9
35.7
40.5
30.6
22.6
23.4
NS
NS
Nitrogen, Nitrate
mg/L
0.3
2.4
5.5
2.8
1.2
4.2
NS
NS
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.6
1.0
0.1 U
NS
NS
Sulfate
mg/L
122
76.9
86.0
395.0
553.0
85.3
NS
NS
Iron, Dissolved
mg/L
0.030 U
0.030 U
0.030 U
0.030 U
0.100 U
0.100 U
NS
NS
Page 8 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW04-GW-006
MW04-GW-007
MW04-GW-008
MW04-GW-NA1
MW04-GW-00?
MW04-GW-010
MW04-GW-011
MW04-GW-012
MW04-GW-013
Date:
May- 97
Nov-97
May-98
Jul-??
Nov-01
Mar-03
Jun-03
Sep-03
Dec-03
Dam Position:
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.0050 U
0.0053
0.0040 U
NA
0.0040 U
0.0040 U
0.0040 U
0.0015 U
0.0015 U
Benzene
mq/l
1.4
1.2
1
1. U
1.0 U
0.5 U
0.5 U
0.25 U
0.25 U
Ethylbenzene
mq/l
1.0 U
1.0 U
1.0 U
1. U
1.0 U
1.0 U
1.0 U
0.43 U
0.43 U
Toluene
mq/l
1.0 U
1.0 U
1.0 U
1. U
1.0 U
1.0 U
1.0 U
0.25 U
0.25 U
Xylenes
mq/l
3.0 U
3.0 U
3.0 U
1. U
3.0 U
3.0 U
3
0.38 U
0.38 U
Acenaphthene
mq/l
1.6
0.14 U
2.72
6
0.19 U
0.19 U
0.19 U
0.709
0.354
Acenaphthylene
mq/l
0.089 U
0.14 U
0.14 U
2. U
0.19 U
0.19 U
0.19 U
0.055 U
0.055 U
Anthracene
mq/l
0.063 U
0.056 U
0.056 U
0.5 U
0.10 U
0.19 U
0.19 U
0.024 U
0.024 U
Benzo (a) a nthracene
mq/l
0.036 U
0.056 U
0.056 U
0.1 U
0.10 U
0.13 U
0.13 U
0.028 U
0.028 U
Benzo(a) pyrene
mq/l
0.094 U
0.056 U
0.056 U
0.1 U
0.10 U
0.19 U
0.19 U
0.050 U
0.050 U
Benzo(b)fluoranthene
M9/L
0.016 U
0.056 U
0.056 U
0.1 U
0.10 U
0.10 U
0.10 U
0.035 U
0.035 U
Benzo (g, h,i) pery lene
M9/L
0.069 U
0.056 U
0.056 U
0.1 U
0.10 u
0.10 U
0.18
0.035 U
0.035 U
Benzo(k)fluoranthene
M9/L
0.026 U
0.056 U
0.056 U
0.1 U
0.10 u
0.10 u
0.10 U
0.038 U
0.038 U
Chrysene
M9/L
0.024 U
0.056 U
0.056 U
0.1 U
0.10 u
0.10 u
0.10 U
0.032 U
0.032 U
Dibenzo(a,h) anthracene
M9/L
0.022 U
0.056 U
0.056 U
0.1 u
0.10 u
0.10 u
0.14
0.03? U
0.03? U
Fluoranthene
M9/L
0.054 U
0.056 U
0.056 U
0.5
0.10 u
0.19 U
0.19 U
0.049 U
0.049 U
Fluorene
M9/L
0.13 U
0.11 U
0.11 U
0.5 U
0.19 U
0.19 U
0.19 U
0.042 U
0.042 U
In deno (1,2,3-cd) pyren e
M9/L
0.057 U
0.056 U
0.056 U
0.1 U
0.10 u
0.10 U
0.10 U
0.034 U
0.034 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
0.22
0.056 U
0.056 U
2. U
0.10 U
0.10 U
0.10 U
0.054 U
0.054 U
Phenanthrene
M9/L
0.061 U
0.056 U
0.056 U
0.5 U
0.10 u
0.10 U
0.10 U
0.035 U
0.035 U
Pyrene
M9/L
0.12 U
0.14 U
0.14 U
0.7
0.19 U
0.19 U
0.19 U
0.099 U
0.145
MNA Parameters
Ethylene
mg/L
NS
NS
NA
NA
0.007 U
NS
0.010 U
0.008 U
0.010 U
Ethane
mg/L
NS
NS
NA
NA
0.007 U
NS
0.010 U
0.008 U
0.010 U
Methane
mg/L
NS
NS
0.05
0.007 U
0.024
NS
0.007 U
0.006
0.008
Alkalinity
mg/L
NS
NS
351
342
369
NS
376
286
364
Nitrogen, Ammonia
mg/L
NS
NS
1.29
1.06
1.0 U
NS
0.8
0.71
0.89
Nitrogen, Total Kjeldahl
mg/L
NS
NS
10 U
1.66
10 U
NS
1.15
0.87
0.94
Orthophosphate
mg/L
NS
NS
0.1 U
0.39
0.30 U
NS
1.48
0.78
0.62
Sulfide, Total
mg/L
NS
NS
0.13
0.14
0.42
NS
0.10 U
0.1
0.10 U
Total Organic Carbon
mg/L
NS
NS
14.7
3.6
4.7
NS
5
4.1
3.1
Chloride
mg/L
NS
NS
45.7
22
23
NS
29.4
29.6
31.3
Nitrogen, Nitrate
mg/L
NS
NS
0.1 U
0.1 U
0.1 U
NS
0.1 U
0.1
0.1 U
Nitrogen, Nitrite
mg/L
NS
NS
0.1 U
0.1 U
0.1 U
NS
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
NS
NS
105
133
104
NS
174
91.9
35.3
Iron, Dissolved
mg/L
NS
NS
NS
0.071
0.683
NS
0.931
0.08
0.030 U
Page 9 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW04-GW-014
MW04-GW-015
MW04-GW-0U
MW04-GW-017
MW04-GW-018
MW04-GW-019
MW04-GW-020
MW04-GW-021
MW04-GW-022
Date:
Mar-04
Jun-04
Sep-04
Dec-04
Mar-05
Jun-05
Sep-05
Dec-05
Mar-06
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Dam Up
Dam Up
Comoliance Parameters
Units
Lead
mg/L
0.00128 B
0.00050 U
0.0050 U
0.00050 U
0.0016 U
NS
NS
NS
NS
Benzene
mq/l
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.170 U
0.17
0.500 U
0.500 U
Ethyl benzene
mq/l
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
0.63 U
0.44 U
1.00 U
1.00 U
Toluene
mq/l
1
0.25 U
0.39
0.25 U
0.25 U
0.09 U
0.09 U
1.00 U
1.00 U
Xylenes
mq/l
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
0.93 U
0.24 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.205
0.672
0.387
0.073 U
0.257
1.46
0.13 U
0.798
0.911
Acenaphthylene
mq/l
0.12 U
0.12 U
0.12 U
0.12 U
0.17 U
0.17 U
0.18 U
0.175 U
0.170 U
Anthracene
mq/l
0.024 U
0.024 U
0.056
0.024 U
0.0095 U
0.201
0.0096 U
0.00959 U
0.00930 U
Benzo(a) anthracene
mq/l
0.033 U
0.033 U
0.034 U
0.033 U
0.019 U
0.019 U
0.020 U
0.0196 U
0.0190 U
Benzo(a)pyrene
mq/l
0.029 U
0.029 U
0.030 U
0.029 U
0.019 U
0.019 U
0.020 U
0.0381 U
0.0370 U
Benzo(b)fluoranthene
M9/L
0.038 U
0.038 U
0.039 U
0.038 U
0.038 U
0.037 U
0.038 U
0.0237 U
0.0230 U
Benzo(g, h,i) perylene
M9/L
0.036 U
0.036 U
0.037 U
0.036 U
0.033 U
0.032 U
0.033 U
0.0196 U
0.0190 U
Benzo(k)fluoranthene
M9/L
0.14 U
0.14 U
0.14 U
0.14 U
0.023 U
0.023 U
0.024 U
0.0330 U
0.0320 U
Chrysene
M9/L
0.030 U
0.030 U
0.031 U
0.030 U
0.020 U
0.020 U
0.021 U
0.0206 U
0.0200 U
Dibenzo(a,h) anthracene
M9/L
0.025 U
0.025 U
0.026 U
0.025 U
0.034 U
0.033 U
0.034 U
0.0340 U
0.0330 U
Fluoranthene
M9/L
0.067 U
0.067 U
0.069 U
0.067 U
0.033 U
0.032 U
0.033 U
0.0330 U
0.0320 U
Fluorene
M9/L
0.026 U
0.155
0.027 U
0.026 U
0.030 U
1.18
0.030 U
0.0299 U
0.511
lndeno(l,2,3-cd) pyrene
M9/L
0.038 U
0.038 U
0.039 U
0.038 U
0.039 U
0.038 U
0.039 U
0.0392 U
0.0380 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
0.124 U
0.120 U
Naphthalene
M9/L
0.042 U
0.042 U
0.043 U
0.042 U
0.10 U
0.10 U
0.10 U
0.103 U
0.253
Phenanthrene
M9/L
0.018 U
0.018 U
0.019 U
0.018 U
0.015 U
0.174
0.015 U
0.0155 U
0.0150 U
Pyrene
M9/L
0.11 U
0.11 U
0.166
0.11 U
0.037 U
0.649
0.037 U
0.277
0.0360 U
MNA Parameters
Ethylene
mg/L
0.058 U
0.008 U
0.008 U
0.010 U
0.010 U
0.007 U
0.014 U
0.008 U
0.008 U
Ethane
mg/L
0.058 U
0.008 U
0.008 U
0.010 U
0.010 U
0.007 U
0.014 U
0.008 U
0.008 U
Methane
mg/L
0.06
0.039
0.019
0.007 U
0.007 U
0.014
0.010 U
0.006
0.006
Alkalinity
mg/L
347
458
546
486
NA
488
516
515
407
Nitrogen, Ammonia
mg/L
0.45
0.9
1.05
0.34
0.69
0.91
0.54
1.01
0.47
Nitrogen, Total Kjeldahl
mg/L
0.79
1.48
1.47
0.84
0.95
1.27
1.04
1.42
0.82
Orthophosphate
mg/L
0.30 U
0.35
0.34
0.30 U
0.51
0.51
0.75
0.30 U
0.52
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
3.9
5.2
4.9
4.1
5.5
4.8
5.74
5.35
11.3
Chloride
mg/L
38.1
33.2
26.4
20.4
21.4
28.8
25.9
21.9
34.6
Nitrogen, Nitrate
mg/L
0.1
0.1 U
0.1 U
0.2
0.1
0.1 U
0.6
0.2
0.2
Nitrogen, Nitrite
mg/L
0.1
0.1 U
0.1 U
0.6
0.1 U
0.1 U
0.5
0.1 U
0.1 U
Sulfate
mg/L
93.8
513
511
490
159
391
334
501
91.4
Iron, Dissolved
mg/L
0.030 U
3.32
1.05
0.061
0.258
0.451
0.105
0.214
0.060
Page 10 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
Date:
Dam Position:
MW04-GW-023
Jun-06
Dam Down
MW04-GW-024
Sep-06
Dam Down
MW04-GW-025
Dec-06
Dam Up
MW04-GW-026
Mar-07
Dam Up
MW04-GW-027
Jun-07
Dam Down
MW04-GW-028
Sep-07
Dam Down
MW04-GW-02?
Nov-07
Dam Up
MW04-GW-030
Sep-08
Dam Down
MW04-GW-031
Sep-09
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.700
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
NS
Ethylbenzene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
NS
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
NS
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
NS
Acenaphthene
mq/l
0.442
0.600
0.945
0.592
0.803
0.506
0.794
0.165 J
NS
Acenaphthylene
mq/l
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.106 U
NS
Anthracene
mq/l
0.0100 U
0.0912 J
0.399
0.145
0.0100 U
0.0730 J
0.0100 U
0.0125 U
NS
Benzo (a) a nthracene
mq/l
0.00300 U
0.00300 U
0.128
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.00375 U
NS
Benzo(a) pyrene
mq/l
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0400 U
NS
Benzo(b)fluoranthene
M9/L
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.01 62 U
NS
Benzo (g, h,i) pery lene
M9/L
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.01 12 U
NS
Benzo(k)fluoranthene
M9/L
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0188 U
NS
Chrysene
M9/L
0.00500 U
0.00500 U
0.121
0.00500 U
0.00500 U
0.00500 U
0.0291 J
0.00625 U
NS
Dibenzo(a,h) anthracene
M9/L
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0125 U
NS
Fluoranthene
M9/L
0.0100 U
0.0100 U
0.798
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0125 U
NS
Fluorene
M9/L
0.0100 u
0.230
0.780
1.18
0.945
0.827
0.814
0.0125 U
NS
In deno (1,2,3-cd) pyren e
M9/L
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00875 U
NS
2-Methylnaphthalene
M9/L
0.0520 U
0.0520 U
0.629
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0650 U
NS
Naphthalene
M9/L
0.0540 U
0.0540 U
2.37
0.0540 U
0.0540 U
0.0571 J
0.0540 U
0.0675 U
NS
Phenanthrene
M9/L
0.124
0.159
1.08
0.158
0.197
0.194
0.264
0.106 J
NS
Pyrene
M9/L
0.246
0.123
1.99
0.412
0.266
0.153
0.179
0.0238 U
NS
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.008 U
0.007 U
0.010 U
0.010 U
0.010 U
NS
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.008 U
0.007 U
0.010 U
0.010 U
0.010 U
NS
Methane
mg/L
0.007 U
0.007 U
0.007
0.005 U
0.025
0.007 U
0.007 U
0.007 U
NS
Alkalinity
mg/L
430
416
366
310
421
435
449
457
NS
Nitrogen, Ammonia
mg/L
0.93
0.37
0.59
0.62
0.79
0.89
0.52
0.57
NS
Nitrogen, Total Kjeldahl
mg/L
1.39
0.86
1.32
0.94
1.45
1.10
1.11
1.13
NS
Orthophosphate
mg/L
0.60
0.34
0.40
0.38
0.29
0.51
0.29
0.56
NS
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
NS
Total Organic Carbon
mg/L
4.05
4.20
3.65
2.86
4.45
4.80
4.32
4.97
NS
Chloride
mg/L
33.7
30.0
33.5
41.8
32.4
28.5
25.1
24.3
NS
Nitrogen, Nitrate
mg/L
1.5
0.5
0.3
0.4
0.5
0.2
0.3
0.3
NS
Nitrogen, Nitrite
mg/L
0.5
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
NS
Sulfate
mg/L
334
122
73.4
66.3
358
158
182
369
NS
Iron, Dissolved
mg/L
0.099
0.180
0.100
0.072
0.071
0.172
0.088
0.030 U
NS
Page 11 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
Date:
Dam Position:
MW04-GW-032
Sep-10
Dam Down
MW04-GW-033
Sep-11
Dam Down
MW04-GW-034R
Sep-12
Dam Down
MW04-GW-035
Sep-13
Dam Down
MW04-GW-036
Sep-14
Dam Down
MW04-GW-037
Sep-15
Dam Down
MW04-GW-038
Sep-16
Dam Down
MW04-GW-03?
Sep-17
Dam Down
MW04-GW-040
Nov-18
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
NS
0.500 U
0.500 U
NS
NS
NS
NS
NS
NS
Ethyl benzene
mq/l
NS
1.00 U
1.00 U
NS
NS
NS
NS
NS
NS
Toluene
mq/l
NS
1.00 U
1.00 U
NS
NS
NS
NS
NS
NS
Xylenes
mq/l
NS
3.00 U
3.00 U
NS
NS
NS
NS
NS
NS
Acenaphthene
mq/l
NS
NS
0.0220 U
NS
NS
NS
NS
NS
NS
Acenaphthylene
mq/l
NS
NS
0.0870 U
NS
NS
NS
NS
NS
NS
Anthracene
mq/l
NS
NS
0.0100 U
NS
NS
NS
NS
NS
NS
Benzo(a) anthracene
mq/l
NS
NS
0.0200 U
NS
NS
NS
NS
NS
NS
Benzo(a)pyrene
mq/l
NS
NS
0.00800 U
NS
NS
NS
NS
NS
NS
Benzo(b)fluoranthene
M9/L
NS
NS
0.0280 U
NS
NS
NS
NS
NS
NS
Benzo(g,h,i)perylene
M9/L
NS
NS
0.00800 U
NS
NS
NS
NS
NS
NS
Benzo(k)fluoranthene
M9/L
NS
NS
0.00700 U
NS
NS
NS
NS
NS
NS
Chrysene
M9/L
NS
NS
0.00800 U
NS
NS
NS
NS
NS
NS
Dibenzo(a,h) anthracene
M9/L
NS
NS
0.0100 U
NS
NS
NS
NS
NS
NS
Fluoranthene
M9/L
NS
NS
0.0100 u
NS
NS
NS
NS
NS
NS
Fluorene
M9/L
NS
NS
0.0160 U
NS
NS
NS
NS
NS
NS
lndeno(1,2,3-cd) pyrene
M9/L
NS
NS
0.00600 U
NS
NS
NS
NS
NS
NS
2-Methylnaphthalene
M9/L
NS
NS
0.100 U
NS
NS
NS
NS
NS
NS
Naphthalene
M9/L
NS
NS
0.0460 U
NS
NS
NS
NS
NS
NS
Phenanthrene
M9/L
NS
NS
0.00500 U
NS
NS
NS
NS
NS
NS
Pyrene
M9/L
NS
NS
0.0170 U
NS
NS
NS
NS
NS
NS
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Ethane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Methane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Chloride
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Page 12 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW04-GW-041
MW04-GW-042
MW04-GW-043
MW06-GW-004
MW06-GW-005
MW06-GW-006
MW06-GW-007
MW06-GW-008
Date:
Oct-19
Sep-20
Sep-21
Aug-95
Dec-96
May-97
Nov-97
May-98
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
0.0209
0.0050 U
0.0050 U
0.0509
0.0091
Benzene
mq/l
0.500 U
0.500 U
0.500 U
1.0 U
0.5 U
0.5 U
0.5 U
0.5 U
Ethyl benzene
mq/l
1.00 U
1.00 U
1.00 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
1.0 U
3.0 U
3.0 U
3.0 U
3.0 U
Acenaphthene
mq/l
0.312 J
NS
0.0667 U
18 U
0.50 U
0.078 U
0.14 U
0.14 U
Acenaphthylene
mq/l
0.0452 U
NS
0.139 J
10 U
1.60 U
0.084 U
0.14 U
0.14 U
Anthracene
mq/l
0.0312 U
NS
0.0733 U
6.6 U
0.030 U
0.060 U
0.055 U
0.056 U
Benzo(a) anthracene
mq/l
0.0441 U
NS
0.0667 U
0.13 U
0.055 U
0.034 U
0.055 U
0.056 U
Benzo(a)pyrene
mq/l
0.0387 U
NS
0.0711 U
0.23 U
0.10 U
0.088 U
0.055 U
0.056 U
Benzo(b)fluoranthene
M9/L
0.0785 U
NS
0.0844 U
0.18 U
0.15 U
0.015 U
0.055 U
0.056 U
Benzo(g,h,i)perylene
M9/L
0.0516 U
NS
0.107 U
0.76 U
0.18 U
0.065 U
0.055 U
0.056 U
Benzo(k)fluoranthene
M9/L
0.0613 U
NS
0.0889 U
0.17 U
0.12 U
0.025 U
0.055 U
0.056 U
Chrysene
M9/L
0.0731 U
NS
0.100 U
1.5 U
0.060 U
0.023 U
0.055 U
0.056 U
Dibenzo(a,h) anthracene
M9/L
0.0602 U
NS
0.0889 U
0.3 U
0.13 U
0.021 U
0.055 U
0.056 U
Fluoranthene
M9/L
0.0677 U
NS
0.0711 U
2.1 U
0.10 u
0.052 U
0.055 U
0.056 U
Fluorene
M9/L
0.0204 U
NS
0.0667 U
2.1 U
0.082 U
0.12 U
0.11 U
0.11 U
lndeno(1,2,3-cd) pyrene
M9/L
0.0516 U
NS
0.107 U
0.43 U
0.13 U
0.054 U
0.055 U
0.056 U
2-Methylnaphthalene
M9/L
0.0817 U
NS
0.275
NA
NA
NA
NA
NA
Naphthalene
M9/L
0.419 U
NS
4.41
10 U
3.38
0.038 U
0.055 U
0.056 U
Phenanthrene
M9/L
0.0430 U
NS
0.0889 U
6.4 U
0.060 U
0.058 U
0.055 U
0.056 U
Pyrene
M9/L
0.0473 U
NS
0.0733
2.7 U
0.084 U
0.11 U
0.14 U
0.14 U
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NS
NS
NA
Ethane
mg/L
NS
NS
NS
NS
NS
NS
NS
NA
Methane
mg/L
NS
NS
NS
NS
NS
NS
NS
0.02 U
Alkalinity
mg/L
NS
NS
NS
NS
NS
NS
NS
428
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
NS
NS
1 U
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
NS
NS
10 U
Orthophosphate
mg/L
NS
NS
NS
NS
NS
NS
NS
0.1 U
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
NS
NS
0.1 U
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
NS
NS
1.5
Chloride
mg/L
NS
NS
NS
NS
NS
NS
NS
169
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
NS
NS
0.7
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
NS
NS
0.1 U
Sulfate
mg/L
NS
NS
NS
NS
NS
NS
NS
661
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Page 13 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
Date:
Dam Position:
MW06-GW-NA1
Jul-??
Dam Down
MW06-GW-00?
Nov-01
Dam Down
MW06-GW-010
Mar-03
Dam Down
MW06-GW-011
Jun-03
Dam Down
MW06-GW-012
Sep-03
Dam Up
MW06-GW-013
Dec-03
Dam Down
MW06-GW-014
Mar-04
Dam Down
MW06-GW-015
Jun-04
Dam Down
MW06-GW-016
Sep-04
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NA
0.0040 U
0.0040 U
0.0040 U
0.0015 U
0.0016
0.00182 B
0.00050 U
0.00050 U
Benzene
mq/l
5. U
1.0 U
0.5 U
0.5 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
Ethylbenzene
mq/l
5. U
1.0 U
1.0 U
1.0 U
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
Toluene
mq/l
5. U
1.0 U
1.0 U
1.0 U
0.25 U
0.25 U
1.71
0.25 U
0.25 U
Xylenes
mq/l
5. U
3.0 U
3.0 U
3.0 U
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
Acenaphthene
mq/l
2. U
0.19 U
0.19 U
0.19 U
0.031 U
0.031 U
0.073 U
0.073 U
0.073 U
Acenaphthylene
mq/l
2. U
0.19 U
0.19 U
0.19 U
0.055 U
0.055 U
0.12 U
0.12 U
0.12 U
Anthracene
mq/l
0.5 U
0.10 U
0.19 U
0.19 U
0.024 U
0.024 U
0.024
0.024 U
0.024 U
Benzo(a) anthracene
mq/l
0.1 U
0.10 U
0.13 U
0.13 U
0.028 U
0.028 U
0.033 U
0.033 U
0.033 U
Benzo(a)pyrene
mq/l
0.1 U
0.10 U
0.19 U
0.19 U
0.050 U
0.050 U
0.029 U
0.029 U
0.029 U
Benzo(b)fluoranthene
M9/L
0.1 U
0.10 U
0.10 U
0.10 U
0.035 U
0.035 U
0.038 U
0.038 U
0.038 U
Benzo(g, h,i) perylene
M9/L
0.1 U
0.10 u
0.10 U
0.10 U
0.035 U
0.035 U
0.036 U
0.036 U
0.036 U
Benzo(k)fluoranthene
M9/L
0.1 U
0.10 u
0.10 u
0.10 u
0.038 U
0.038 U
0.14 U
0.14 U
0.14 U
Chrysene
M9/L
0.1 U
0.10 u
0.10 u
0.10 u
0.032 U
0.032 U
0.030 U
0.030 U
0.030 U
Dibenzo(a,h) anthracene
M9/L
0.1 u
0.10 u
0.10 u
0.10 u
0.03? U
0.03? U
0.025 U
0.025 U
0.025 U
Fluoranthene
M9/L
0.2 U
0.10 u
0.19 U
0.19 U
0.049 U
0.049 U
0.067 U
0.067 U
0.067 U
Fluorene
M9/L
0.5 U
0.19 U
0.19 U
0.19 U
0.042 U
0.042 U
0.026 U
0.026 U
0.026 U
lndeno(l ,2,3-cd) pyrene
M9/L
0.1 U
0.10 u
0.10 U
0.10 U
0.034 U
0.034 U
0.038 U
0.038 U
0.038 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
2. U
0.10 U
0.10 U
0.10 U
0.054 U
0.054 U
0.042 U
0.042 U
0.042 U
Phenanthrene
M9/L
0.5 U
0.10 u
0.10 U
0.10 U
0.035 U
0.035 U
0.018 U
0.018 U
0.018 U
Pyrene
M9/L
0.2 U
0.19 U
0.19 U
0.19 U
0.099 U
0.099 U
0.11 U
0.11 U
0.11 U
MNA Parameters
Ethylene
mg/L
NA
0.007 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
0.010 U
Ethane
mg/L
NA
0.007 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
0.010 U
Methane
mg/L
0.007 U
0.01
0.005 U
0.007 U
0.021
0.018
0.008
0.006 U
0.007 U
Alkalinity
mg/L
422
426
324
457
361
325
309
418
459
Nitrogen, Ammonia
mg/L
0.273
1.0 U
1.0 U
0.10 U
0.35
0.28
0.32
0.30 U
0.30 U
Nitrogen, Total Kjeldahl
mg/L
0.865
10 U
10 U
0.25
0.49
0.38
0.47
0.60 U
0.60 U
Orthophosphate
mg/L
0.3 U
0.49
0.82
0.84
0.46
0.30 U
0.30 U
0.30 U
0.30 U
Sulfide, Total
mg/L
0.1 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
2.1
1.5
1.3
1.2
1.6
1.4
1.2
1.2
1
Chloride
mg/L
54
42.2
16.2
89.5
26
30
20.5
305
95.1
Nitrogen, Nitrate
mg/L
0.3
0.3
0.1 U
5.8
0.1 U
0.1 U
0.2
9.3
5
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.5 U
0.1 U
Sulfate
mg/L
408
256
167
318
219
203
152
350
208
Iron, Dissolved
mg/L
0.763
3.34
0.876
0.211
0.21
0.566
1.38
0.446
0.145
Page 14 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
Date:
Dam Position:
MW06-GW-017
Dec-04
Dam Down
MW06-GW-018
Mar-05
Dam Up
MW06-GW-01?
Jun-05
Dam Down
MW06-GW-020
Sep-05
Dam Down
MW06-GW-021
Dec-05
Dam Up
MW06-GW-022
Mar-06
Dam Up
MW06-GW-023
Jun-06
Dam Down
MW06-GW-024
Sep-06
Dam Down
MW06-GW-025
Dec-06
Dam Up
Comoliance Parameters
Units
Lead
mg/L
0.00093
0.0016 U
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.25 U
5.76
0.170 U
0.10 U
0.500 U
40.1 / 54.1
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
0.43 U
0.43 U
0.63 U
0.44 U
1.00 U
1.00 U / 1.00 u
1.00 U
1.00 U
1.00 U
Toluene
mq/l
0.25 U
0.25 U
0.09 U
0.09 U
1.00 U
1.00 U / 1.00 u
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
0.38 U
0.38 U
0.93 U
0.24 U
3.00 U
3.00 U / 3.77
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.074 U
0.341
0.13 U
0.13 U
0.133 U
3.37
0.0490 U
0.0490 U
0.0490 U
Acenaphthylene
mq/l
0.12 U
0.17 U
0.17 U
0.18 U
0.1 73 U
0.170 U
0.0850 U
0.0850 U
0.0850 U
Anthracene
mq/l
0.024 U
0.0095 U
0.0093 U
0.0096 U
0.00949 U
0.00930 U
0.0100 U
0.0100 U
0.0100 U
Benzo (a) a nthracene
mq/l
0.033 U
0.019 U
0.019 U
0.020 U
0.0194 U
0.0190 U
0.00300 U
0.00300 U
0.00300 U
Benzo(a) pyrene
mq/l
0.029 U
0.019 U
0.019 U
0.020 U
0.0378 U
0.0370 U
0.0320 U
0.0320 U
0.0320 U
Benzo(b)fluoranthene
M9/L
0.038 U
0.038 U
0.037 U
0.038 U
0.0235 U
0.0230 U
0.0130 U
0.0130 U
0.0130 U
Benzo (g, h,i) pery lene
M9/L
0.036 U
0.033 U
0.032 U
0.033 U
0.0194 U
0.0190 U
0.00900 U
0.00900 U
0.00900 U
Benzo(k)fluoranthene
M9/L
0.14 U
0.023 U
0.023 U
0.024 U
0.0327 U
0.0320 U
0.0150 U
0.0150 U
0.0150 U
Chrysene
M9/L
0.030 U
0.020 U
0.020 U
0.021 U
0.204 U
0.0200 U
0.00500 U
0.00500 U
0.00500 U
Dibenzo(a,h) anthracene
M9/L
0.025 U
0.034 U
0.033 U
0.034 U
0.0337 U
0.0330 U
0.0100 U
0.0100 U
0.0100 U
Fluoranthene
M9/L
0.068 U
0.033 U
0.032 U
0.033 U
0.0327 U
0.0320 U
0.0100 U
0.0100 U
0.0100 U
Fluorene
M9/L
0.026 U
0.030 U
0.029 U
0.030 U
0.0296 U
0.0290 U
0.0100 u
0.0100 u
0.0100 u
In deno (1,2,3-cd) pyren e
M9/L
0.038 U
0.039 U
0.038 U
0.039 U
0.0388 U
0.0380 U
0.00700 U
0.00700 U
0.00700 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
0.122 U
0.120 U
0.520 U
0.0520 U
0.0520 U
Naphthalene
M9/L
0.042 U
0.10 U
0.10 U
0.10 U
0.102 U
2.94
0.0540 U
0.0540 U
0.0540 U
Phenanthrene
M9/L
0.018 U
0.015 U
0.015 U
0.015 U
0.0153 U
0.0150 U
0.00700 U
0.00700 U
0.00700 U
Pyrene
M9/L
0.11 U
0.037 U
0.036 U
0.037 U
0.0367 U
0.0360 U
0.0190 U
0.0190 U
0.0190 U
MNA Parameters
Ethylene
mg/L
0.007 U
0.013 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
Ethane
mg/L
0.007 U
0.013 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
Methane
mg/L
0.005 U
0.032
0.007 U
0.006 U
0.007 U
0.016
0.007 U
0.007 U
0.009
Alkalinity
mg/L
443
NA
431
497
442
385
362
386
415
Nitrogen, Ammonia
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30
0.30 U
0.30 U
0.30 U
Nitrogen, Total Kjeldahl
mg/L
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
Orthophosphate
mg/L
0.31
0.30 U
0.30 U
0.39
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
1
1.5
1
1.84
1.65
2.17
1.15
0.8
1.59
Chloride
mg/L
200
46.8
314
31.4
80.9
36.0
571
457
155
Nitrogen, Nitrate
mg/L
5.4
0.3
9
7.2
1.3
0.1 U
7.3
6.6
0.9
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
292
288
302
123
424
383
390
337
475
Iron, Dissolved
mg/L
0.198
0.073
0.536
0.083
0.436
0.572
0.409
0.186
0.046
Page 15 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
Date:
Dam Position:
MW06-GW-026
Mar-07
Dam Up
MW06-GW-027
Jun-07
Dam Down
MW06-GW-028
Sep-07
Dam Down
MW06-GW-02?
Nov-07
Dam Up
MW06-GW-030
Sep-08
Dam Down
MW06-GW-031
Sep-09
Dam Down
MW06-GW-032
Sep-10
Dam Down
MW06-GW-033
Sep-11
Dam Down
MW06-GW-034R
Sep-12
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.0490 U
0.0490 U
0.0490 U
0.0490 U
0.0490 U
0.0220 U
0.0220 U
0.0220 U
0.0220 U
Acenaphthylene
mq/l
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0870 U
0.0870 U
0.0870 U
0.0870 U
Anthracene
mq/l
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Benzo (a) a nthracene
mq/l
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.00500 U
0.0134 J
0.0200 U
0.0200 U
Benzo(a) pyrene
mq/l
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.00800 U
0.00800 U
0.00800 U
0.00800 U
Benzo(b)fluoranthene
M9/L
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0280 U
0.0280 U
0.0280 U
0.0280 U
Benzo (g, h,i) pery lene
M9/L
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00800 U
0.00800 U
0.00800 U
0.00800 U
Benzo(k)fluoranthene
M9/L
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
Chrysene
M9/L
0.00500 U
0.00500 U
0.00500 U
0.00500 U
0.00500 U
0.00800 U
0.0336 J
0.00800 U
0.00800 U
Dibenzo(a,h) anthracene
M9/L
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0412 J
0.0100 U
0.0100 U
Fluoranthene
M9/L
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 u
0.0100 u
0.0100 u
0.0100 u
Fluorene
M9/L
0.0100 u
0.0100 u
0.0100 u
0.0100 u
0.0100 u
0.01 60 U
0.0160 U
0.0160 U
0.0160 U
In deno (1,2,3-cd) pyren e
M9/L
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00600 U
0.00600 U
0.00600 U
0.00600 U
2-Methylnaphthalene
M9/L
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0691 J
0.0250 U
0.100 U
0.100 U
Naphthalene
M9/L
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0601 J
0.0460 U
0.0514 J, B, LI
0.0460 U
Phenanthrene
M9/L
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.0165 J
0.00500 U
0.00500 U
0.00500 U
Pyrene
M9/L
0.0190 U
0.0190 U
0.0190 U
0.0190 U
0.0190 U
0.01 70 U
0.0170 U
0.0170 U
0.0170 U
MNA Parameters
Ethylene
mg/L
0.010 U
0.013 U
0.010 U
0.010 U
0.008 U
0.010 U
0.007 U
0.010 U
0.007 U
Ethane
mg/L
0.010 U
0.013 U
0.010 U
0.010 U
0.008 U
0.010 U
0.007 U
0.010 U
0.007 U
Methane
mg/L
0.007 U
0.009 U
0.007 U
0.007 U
0.006 U
0.007 U
0.005 U
0.007 U
0.005 U
Alkalinity
mg/L
388
346
393
427
369
384
361
372
450
Nitrogen, Ammonia
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.31
0.32
Nitrogen, Total Kjeldahl
mg/L
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.50 U
0.54
0.50 U
0.50 U
Orthophosphate
mg/L
0.30 U
0.15
0.21
0.15
0.28
0.20
0.38
0.14
0.16
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.1
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
0.86
1.1
1.38
1.58
0.69
0.36
0.29
0.30
0.39
Chloride
mg/L
566
762
432
147
1.0 U
359
278
64.7
395
Nitrogen, Nitrate
mg/L
6.0
8.9
5.1
0.4
5.2
5.0
5.6
4.8
7.3
Nitrogen, Nitrite
mg/L
0.1 U
2.5 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
237
293
223
505
216
199
152
345
121
Iron, Dissolved
mg/L
0.184
0.126
0.573
0.100 U
0.547
0.269
0.333
0.746
0.100 U
Page 16 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
Date:
Dam Position:
MW06-GW-035
Sep-13
Dam Down
MW06-GW-036
Sep-14
Dam Down
MW06-GW-037
Sep-15
Dam Down
MW06-GW-038
Sep-16
Dam Down
MW06-GW-03?
Sep-17
Dam Down
MW06R-GW-040
Nov-18
Dam Down
MW06R-GW-041
Oct-19
Dam Down
MW06 R-GW-042
Sep-20
Dam Down
MW06R-GW-043
Sep-21
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
Mg/L
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
Mg/L
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
Mg/L
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
Mg/L
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
Mg/L
0.0313 U
0.0324 U
0.0324 U
0.0257 U
0.0122 U
3.88
0.736
0.0696 J
0.0379 J
Acenaphthylene
Mg/L
0.0321 U
0.0333 U
0.0333 U
0.0278 J
0.0102 U
0.146 J
0.0422 U
0.0442 U
0.0292 U
Anthracene
Mg/L
0.0179 U
0.0185 U
0.0185 U
0.0147 U
0.0296 U
0.0259 U
0.0291 U
0.0305 U
0.0344 U
Benzo (a) anthracene
Mg/L
0.0294 J, B
0.0302 J,B
0.0176 U
0.0140 U
0.0122 U
0.0696 U
0.0412 U
0.0432 U
0.0313 U
Benzo(a) pyrene
Mg/L
0.0170 U
0.0176 U
0.0176 U
0.0140 U
0.0143 U
0.0723 U
0.0362 U
0.0379 U
0.0333 U
Benzo (b)fluoranthene
Mg/L
0.0179 U
0.0185 U
0.0185 U
0.0147 U
0.0276 U
0.0946 U
0.0734 U
0.0768 U
0.0396 U
Benzo (g ,h,i) perylene
Mg/L
0.0116 U
0.0120 U
0.0364 J
0.00956 U
0.0173 U
0.0795 U
0.0482 U
0.0505 U
0.0500 U
Benzo (k) f luora nthene
Mg/L
0.0134 U
0.0139 U
0.0139 U
0.01 10 U
0.0184 U
0.0679 U
0.0573 U
0.0600 U
0.0417 U
Chrysene
Mg/L
0.0143 U
0.0148 U
0.0148 U
0.01 18 U
0.01 12 U
0.0723 U
0.0683 U
0.0716 U
0.0469 U
Dibenzo(a,h) anthracene
Mg/L
0.0116 U
0.0120 U
0.0378 J
0.00956 U
0.0173 U
0.100 U
0.0563 U
0.0589 U
0.0417 U
Fluoranthene
Mg/L
0.0143 U
0.0148 U
0.0148 U
0.01 18 U
0.0500 U
0.0777 U
0.0633 U
0.0663 U
0.0333 U
Fluorene
Mg/L
0.0205 U
0.0213 U
0.0213 U
0.0169 U
0.0122 U
0.0290 J
0.0191 U
0.0200 U
0.0313 U
lndeno(l ,2,3-cd) pyrene
Mg/L
0.0152 U
0.0157 U
0.0360 J
0.0125 U
0.0173 U
0.113 U
0.0482 U
0.0505 U
0.0500 U
2-Methylnaphthalene
Mg/L
0.0330 U
0.0343 U
0.0343 U
0.0324 J
0.0102 U
0.0768 U
0.0764 U
0.0800 U
0.0417 U
Naphthalene
Mg/L
0.0339 U
0.0352 U
0.0352 U
0.130 J
0.01 12 U
0.175 U
0.392 U
0.41 1 U
0.536
Phenanthrene
Mg/L
0.0232 U
0.0245 J
0.0241 U
0.0191 U
0.0327 U
0.0830 U
0.0402 U
0.0421 U
0.0417 U
Pyrene
Mg/L
0.0125 U
0.0130 U
0.0130 U
0.0103 U
0.0561 U
0.0589 U
0.0442 U
0.0463 U
0.0344 U
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Ethane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Methane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Chloride
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Page 17 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW13-GW-004
MW13-GW-005
MW13-GW-006
MW13-GW-007
MW13-GW-008
MW13-GW-NA1
MW13-GW-00?
MW13-GW-010
Date:
Aug-95
Dec-96
May-97
Nov- 97
May-98
Jul-??
Nov-01
Mar-03
Dam Position:
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.862
0.137
0.0099
0.49
0.015
NA
0.1005
0.0071
Benzene
mq/l
1.0 U
0.5 U
0.5 U
0.5 U
0.5 U
1. U
1.0 U
0.5 U
Ethylbenzene
mq/l
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1. U
1.0 U
1.0 U
Toluene
mq/l
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1. U
1.0 U
1.0 U
Xylenes
mq/l
1.0 U
3.0 U
3.0 U
3.0 U
3.0 U
1. U
3.0 U
3.0 U
Acenaphthene
mq/l
18 U
0.050 U
0.076 U
0.14 U
0.14 U
2. U
0.19 U
0.19 U
Acenaphthylene
mq/l
10 U
1.6 U
0.082 U
0.14 U
0.14 U
2. U
0.19 U
0.19 U
Anthracene
mq/l
6.6
0.030 U
0.058 U
0.058 U
0.102
0.5 U
0.15
0.19 U
Benzo(a) anthracene
mq/l
0.21 U
0.26
0.033 U
0.112
0.155
0.1 U
0.25
0.13 U
Benzo(a)pyrene
mq/l
0.23 U
0.25
0.086 U
0.083
0.165
0.1 U
0.28
0.19 U
Benzo(b)fluoranthene
M9/L
0.18 U
0.15 U
0.015 U
0.058 U
0.062
0.1 U
0.12
0.10 U
Benzo(g,h,i)perylene
M9/L
0.76 U
0.23
0.063 U
0.105
0.139
0.1 U
0.17
0.10 U
Benzo(k)fluoranthene
M9/L
0.17 U
0.12 U
0.024 U
0.058 U
0.091
0.1 U
0.10 U
0.10 u
Chrysene
M9/L
1.5 U
0.060 U
0.022 U
0.092
0.104
0.1 U
0.19
0.10 u
Dibenzo(a,h) anthracene
M9/L
0.3 U
0.18 U
0.020 U
0.058 U
0.058 U
0.1 u
0.10 u
0.10 u
Fluoranthene
M9/L
2.1 U
0.55
0.050 U
0.279
0.365
0.2
0.47
0.22
Fluorene
M9/L
2.1 U
0.082 U
0.12 U
0.12 U
0.12 U
0.5 U
0.19 U
0.19 U
lndeno( 1,2,3-cd) pyrene
M9/L
0.43 U
0.13 U
0.052 U
0.077
0.105
0.1 U
0.13
0.10 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
10 U
0.38 U
0.037 U
0.058 U
0.058 U
2. U
0.10 U
0.10 U
Phenanthrene
M9/L
6.4 U
0.19
0.056 U
0.125
0.265
0.5 U
0.33
0.12
Pyrene
M9/L
2.7 U
0.63
0.11 U
0.315
0.393
0.2
0.74
0.19 U
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NA
0.007 U
0.010 U
Ethane
mg/L
NS
NS
NS
NS
NS
NA
0.007 U
0.010 U
Methane
mg/L
NS
NS
NS
NS
NS
0.0083
0.061
0.017
Alkalinity
mg/L
NS
NS
NS
NS
NS
152
97
92
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
0.692
1.0 U
1.0 U
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
1.83
10 U
10 U
Orthophosphate
mg/L
NS
NS
NS
NS
NS
0.54
0.6
0.83
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
0.1 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
4
4.8
4.8
Chloride
mg/L
NS
NS
NS
NS
NS
24
28.7
37.1
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
2.5
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
0.3
0.1 U
0.1 U
Sulfate
mg/L
NS
NS
NS
NS
NS
325
329
655
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
0.034
0.031
0.030 U
Page 18 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW13-GW-011
MW13-GW-012
MW13-GW-013
MW13-GW-014
MW13-GW-015
MW13-GW-0U
MW13-GW-017
MW13-GW-018
MW13-GW-019
Date:
Jun-03
Sep-03
Dec-03
Mar-04
Jun-04
Sep-04
Dec-04
Mar-05
Jun-05
Dam Position:
Dam Down
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.0040 U
0.0015 U
0.0015 U
0.00372 B
0.00098
0.00368
0.0015
0.0016 U
NS
Benzene
mq/l
0.5 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.1 70 U
Ethyl benzene
mq/l
1.0 U
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
0.63 U
Toluene
mq/l
1.0 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.09 U
Xylenes
mq/l
3.0 U
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
0.93 U
Acenaphthene
mq/l
0.19 U
0.031 U
0.073 U
0.073 U
0.073 U
0.076 U
0.076 U
0.13 U
0.13 U
Acenaphthylene
mq/l
0.19 U
0.055 U
0.12 U
0.12 U
0.12 U
0.12 U
0.12 U
0.17 U
0.17 U
Anthracene
mq/l
0.19 U
0.024 U
0.024 U
0.036
0.029
0.154
0.025 U
0.0095 U
0.057
Benzo(a) anthracene
mq/l
0.13 U
0.028 U
0.033 U
0.033 U
0.046
0.046
0.034 U
0.019 U
0.069
Benzo(a)pyrene
mq/l
0.19 U
0.050 U
0.029 U
0.029 U
0.029 U
0.030 U
0.030 U
0.019 U
0.173
Benzo(b)fluoranthene
M9/L
0.10 U
0.035 U
0.038 U
0.038 U
0.038 U
0.040 U
0.040 U
0.038 U
0.083
Benzo(g,h,i)perylene
M9/L
0.10 U
0.035 U
0.036 U
0.036 U
0.036 U
0.037 U
0.037 U
0.033 U
0.037
Benzo(k)fluoranthene
M9/L
0.10 u
0.038 U
0.14 U
0.14 U
0.14 U
0.15 U
0.15 U
0.023 U
0.04
Chrysene
M9/L
0.10 u
0.032 U
0.030 U
0.040 U
0.046
0.031 U
0.031 U
0.020 U
0.059
Dibenzo(a,h) anthracene
M9/L
0.10 u
0.03? U
0.025 U
0.025 U
0.025 U
0.026 U
0.026 U
0.034 U
0.034 U
Fluoranthene
M9/L
0.19 U
0.049 U
0.067 U
0.067 U
0.067 U
0.070 U
0.070 U
0.033 U
0.219
Fluorene
M9/L
0.19 U
0.042 U
0.026 U
0.026 U
0.026 U
0.027 U
0.027 U
0.030 U
0.030 U
lndeno(1,2,3-cd) pyrene
M9/L
0.10 U
0.034 U
0.038 U
0.038 U
0.038 U
0.040 U
0.040 U
0.039 U
0.039 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
0.10 U
0.154
0.042 U
0.042 U
0.042 U
0.612
0.044 U
0.265
0.10 U
Phenanthrene
M9/L
0.10 U
0.035 U
0.018 U
0.018 U
0.075
0.521
0.019 U
0.015 U
0.063
Pyrene
M9/L
0.19
0.099 U
0.11 U
0.11 U
0.134
0.11 U
0.11 U
0.037 U
0.312
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
Methane
mg/L
0.024
0.007 U
0.046
0.007
0.005 U
0.041
0.04
0.007 U
0.017
Alkalinity
mg/L
121
241
128
109
123
140
110
NA
140
Nitrogen, Ammonia
mg/L
0.55
0.12
0.47
0.21
0.37
0.30 U
0.62
0.30 U
0.48
Nitrogen, Total Kjeldahl
mg/L
0.83
0.31
0.7
0.64
0.72
0.63
1.16
0.60 U
0.95
Orthophosphate
mg/L
1.06
0.78
0.59
0.49
0.54
0.46
0.53
0.5
0.67
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
4.5
2.8
3.5
3.8
3.2
3.8
4
4.1
3.6
Chloride
mg/L
36.4
32.2
36
74.6
54.2
33.3
49.6
62.3
62.7
Nitrogen, Nitrate
mg/L
0.2
0.2
0.1 U
0.1 U
0.3
0.5
0.1 U
4.6
0.2
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
400
73.4
300
363
355
168
392
119
391
Iron, Dissolved
mg/L
0.030 U
0.030 U
0.030 U
0.030 U
0.100 U
0.030 U
0.030 U
0.030 U
0.030 U
Page 19 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW13-GW-020
MW13-GW-021
MW13-GW-022
MW13-GW-023
MW13-GW-024
MW13-GW-025
MW13-GW-026
MW13-GW-027
MW13-GW-028
Date:
Sep-05
Dec-05
Mar-06
Jun-06
Sep-06
Dec-06
Mar-07
Jun-07
Sep-07
Dam Position:
Dam Down
Dam Up
Dam Up
Dam Down
Dam Down
Dam Up
Dam Up
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.10 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
0.44 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
mq/l
0.09 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
0.24 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.13 U
0.134 U
0.130 U
0.0490 U
0.0490 U
0.0490 U
0.0490 U
0.0544 U
0.0490 U
Acenaphthylene
mq/l
0.17 U
0.1 75 U
0.1 70 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0944 U
0.0850 U
Anthracene
mq/l
0.04
0.00959 U
0.00930 U
0.0327 J
0.0100 U
0.0100 U
0.0100 U
0.0356 J
0.0304 J
Benzo(a) anthracene
mq/l
0.026
0.0196 U
0.0190 U
0.0609 J
0.00311 J
0.00300 U
0.00300 U
0.0453 J
0.0446 J
Benzo(a) pyrene
mq/l
0.051
0.0381 U
0.0370 U
0.0623 J
0.0320 U
0.0320 U
0.0320 U
0.0356 U
0.0508 J
Benzo(b)fluoranthene
M9/L
0.038 U
0.0237 U
0.0230 U
0.0625 J
0.0130 U
0.0130 U
0.0130 U
0.0144 U
0.0416 J
Benzo(g,h,i) perylene
M9/L
0.075
0.0196 U
0.0190 U
0.0455 J
0.00900 U
0.00900 U
0.00900 U
0.0100 U
0.00969 J
Benzo(k)fluoranthene
M9/L
0.023 U
0.0330 U
0.0320 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0167 U
0.0224 J
Chrysene
M9/L
0.020 U
0.0206 U
0.0200 U
0.0594 J
0.00500 U
0.00500 U
0.00500 U
0.0500 U
0.0399 J
Dibenzo(a,h) anthracene
M9/L
0.057
0.0340 U
0.0330 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0111 U
0.0100 U
Fluoranthene
M9/L
0.043
0.0330 U
0.0320 U
0.154
0.0100 U
0.0100 U
0.0100 U
0.123
0.133
Fluorene
M9/L
0.030 U
0.0299 U
0.0290 U
0.0100 U
0.0100 u
0.0100 u
0.0100 u
0.0111 U
0.0100 U
lndeno(1,2,3-cd) pyrene
M9/L
0.074
0.0392 U
0.0380 U
0.0426 J
0.00700 U
0.00700 U
0.00700 U
0.00778 U
0.0397 J
2-Methylnaphthalene
M9/L
NA
0.124 U
0.120 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0578 U
0.0520 U
Naphthalene
M9/L
0.10 U
0.103 U
0.100 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0600 U
0.0540 U
Phenanthrene
M9/L
0.015 U
0.0155 U
0.0150 U
0.0661 J
0.00780 J
0.00700 U
0.00700 U
0.0969 J
0.0686 J
Pyrene
M9/L
0.161
0.0371 U
0.0360 U
0.266
0.0190 U
0.0190 U
0.0190 U
0.265
0.243
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.006 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.006 U
Methane
mg/L
0.052
0.007 U
0.007 U
0.007
0.052
0.007 U
0.007 U
0.021
0.029
Alkalinity
mg/L
143
125
232
191
242
250
207
196
170
Nitrogen, Ammonia
mg/L
0.94
0.30 U
0.30 U
0.55
0.30 U
0.30 U
0.30 U
0.4
0.30 U
Nitrogen, Total Kjeldahl
mg/L
1.33
0.60 U
0.60 U
1.01
0.60 U
0.60 U
0.60 U
0.85
1.19
Orthophosphate
mg/L
0.91
0.46
0.34
0.59
0.60
0.33
0.30 U
0.54
0.50
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
5.09
3.15
2.83
3.67
3.24
2.19
6.19
4.15
4.39
Chloride
mg/L
48.1
36.7
52.5
39.8
31.5
38.5
30.1
44.7
44.5
Nitrogen, Nitrate
mg/L
0.1 U
8.3
4.9
0.2
0.1 U
3.7
8.8
0.1
0.1 U
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
378
177
66.0
311
82
70.7
163
374
313
Iron, Dissolved
mg/L
0.063
0.030 U
0.030 U
0.032
0.030 U
0.030 U
0.030 U
0.381
0.279
Page 20 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW13-GW-029
MW13-GW-030
MW13-GW-031
MW13-GW-032
MW13-GW-033
MW13-GW-034
MW13-GW-035
MW13-GW-036
MW13-GW-037
Date:
Nov-07
Sep-08
Sep-09
Sep-10
Sep-11
Sep-12
Sep-13
Sep-14
Sep-15
Dam Position:
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.0490 U
0.0490 U
0.0220 U
0.0220 U
0.0948 J
0.0220 U
0.0324 U
0.155
0.0324 U
Acenaphthylene
mq/l
0.0850 U
0.234
0.0870 U
0.0870 U
0.0870 U
0.0870 U
0.0333 U
0.575
0.0333 U
Anthracene
mq/l
0.0462 J
0.0100 U
0.0100 U
0.0268 J
0.178
0.0103 J
0.0185 U
0.0483 J
0.0185 U
Benzo(a) anthracene
mq/l
0.216
0.0222 J
0.0323 J
0.12?
0.91?
0.0200 U
0.0441 J, B
0.0393 J,B
0.0176 U
Benzo(a)pyrene
mq/l
0.234
0.0320 U
0.0353 J
0.157
l.U
0.00800 U
0.0176 U
0.0176 U
0.0176 U
Benzo(b)fluoranthene
M9/L
0.233
0.0276 J
0.0280 U
0.153
1.05
0.0280 U
0.0185 U
0.0185 U
0.0185 U
Benzo(g,h,i)perylene
M9/L
0.318
0.00900 U
0.0196 J
0.0963 J
0.777
0.00800 U
0.0169 J, B
0.0120 U
0.0120 U
Benzo(k)fluoranthene
M9/L
0.163
0.0157 J
0.0167 J
0.0777 J
0.503
0.00700 U
0.0139 U
0.0139 U
0.0139 U
Chrysene
M9/L
0.235
0.0317 J
0.0263 J
0.170
1.230
0.00800 U
0.0184 J, B
0.0148 U
0.0148 U
Dibenzo(a,h) anthracene
M9/L
0.0100 u
0.0100 U
0.0100 U
0.0100 U
0.112
0.0100 U
0.0122 J, B
0.0120 U
0.0120 U
Fluoranthene
M9/L
0.485
0.107
0.0682 J
0.258
1.56
0.0653 J
0.0335 J, B
0.0327 J
0.0155 J
Fluorene
M9/L
0.0607 J
0.0470 J
0.0160 U
0.0259 J
0.0822 J
0.0160 J
0.0213 U
0.207
0.0213 U
lndeno( 1,2,3-cd) pyrene
M9/L
0.0975 J
0.0152 J
0.0153 J
0.107
0.771
0.00600 U
0.0157 U
0.0157 U
0.0157 U
2-Methylnaphthalene
M9/L
0.0815 J
0.0949 J
0.0756 J
0.0250 U
0.100 u
0.100 U
0.0343 U
0.262 J
0.0343 U
Naphthalene
M9/L
0.774
0.0540 U
0.0567 J
0.0460 U
0.0921 J, B, LI
0.0846 J
0.0352 U
2.43
0.0352 U
Phenanthrene
M9/L
0.296
0.0390 J
0.0229 J
0.136
0.638
0.0442 J
0.0424 J, B
0.195
0.0305 J
Pyrene
M9/L
0.569
0.219
0.206
0.433
2.20
0.0710 J
0.0631 J, B
0.0998
0.0264 J
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008U
NS
NS
NS
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
NS
NS
NS
Methane
mg/L
0.007 U
0.055
0.048
0.057
0.019
0.005 U
NS
NS
NS
Alkalinity
mg/L
282
181
213
226
250
478
NS
NS
NS
Nitrogen, Ammonia
mg/L
0.30 U
0.69
0.94
0.72
1.17
0.30 U
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
0.60 U
2.02
1.20
1.37
1.34
0.50 U
NS
NS
NS
Orthophosphate
mg/L
0.33
0.34
1.99
0.71
0.27
0.69
NS
NS
NS
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
NS
NS
NS
Total Organic Carbon
mg/L
2.55
5.34
3.62
3.41
3.60
4.91
NS
NS
NS
Chloride
mg/L
28.5
42.1
42.4
58.3
74.1
72.6
NS
NS
NS
Nitrogen, Nitrate
mg/L
3.7
0.1 U
0.1 U
0.2
0.1 U
0.1 U
NS
NS
NS
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
1.0
0.1 U
0.1 U
NS
NS
NS
Sulfate
mg/L
73
381
265
247
560
545
NS
NS
NS
Iron, Dissolved
mg/L
0.100 U
0.030 U
0.030 U
0.100 U
0.100 U
0.850
NS
NS
NS
Page 21 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW13-GW-038
MW13-GW-039
MW13-GW-040
MW13-GW-041
MW14-GW-004
MW14R-GW-005
MW14R-GW-006
MW14R-GW-007
Date:
Sep-16
Sep-17
Nov-18
Oct-19
Aug-95
Dec-96
May-97
Nov-97
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
1.1
0.998
0.452
17
Benzene
Mg/L
0.500 U
0.500 U
NS
0.500 U
2.8
19.6
1.5
2.1
Ethylbenzene
Mg/L
1.00 U
1.00 U
NS
1.00 U
1.6
68.6
2.5
46.5
Toluene
Mg/L
1.00 U
1.00 U
NS
1.00 U
1.0 U
10.4
1.0 U
2.5
Xylenes
Mg/L
3.00 U
3.00 U
NS
3.00 U
1.0 U
148
14.1
58.4
Acenaphthene
Mg/L
0.0257 U
0.0122 U
NS
0.0231 U
18 U
75.3
21.4
74.5
Acenaphthylene
Mg/L
0.0265 U
0.0100 U
NS
0.0422 U
10 U
257
34
231
Anthracene
Mg/L
0.0147 U
0.0296 U
NS
0.0291 U
6.6 U
18.8
9.47
17.2
Benzo (a) anthracene
Mg/L
0.0140 U
0.0122 U
NS
0.0412 U
1.7
1.4 U
0.67
1.6
Benzo(a) pyrene
Mg/L
0.0140 U
0.0143 U
NS
0.0362 U
1.2
2.5 U
0.44 U
0.058 U
Benzo (b)fluoranthene
Mg/L
0.0147 U
0.0276 U
NS
0.0734 U
0.62
3.8 U
0.076 U
0.058 U
Benzo (g ,h,i) perylene
Mg/L
0.0187 J
0.0173 U
NS
0.0482 U
0.76 U
4.5 U
0.32 U
0.058 U
Benzo (k) f luora nthene
Mg/L
0.0110 U
0.0184 U
NS
0.0573 U
0.51
3.0 U
0.12 U
0.058 U
Chrysene
Mg/L
0.0118 U
0.0112 U
NS
0.0683 U
1.5 U
1.5 U
0.37
0.881
Dibenzo(a,h) anthracene
Mg/L
0.0165 J
0.0173 U
NS
0.0563 U
0.3 U
3.3U
0.10 U
0.058 U
Fluoranthene
Mg/L
0.0118 U
0.0500 U
NS
0.0633 U
7.8
13.4
8.17
7.57
Fluorene
Mg/L
0.0169 U
0.0122 U
NS
0.0191 U
2.1 U
176
0.61 U
154
lndeno(l ,2,3-cd) pyrene
Mg/L
0.0160 J
0.0173 U
NS
0.0482 U
0.57
3.3 U
0.26 U
0.058 U
2-Methylnaphthalene
Mg/L
0.0272 U
0.0102 U
NS
0.0764 U
NA
NA
NA
NA
Naphthalene
Mg/L
0.0797 J
0.0122 U
NS
0.392 U
10 U
459
0.19 U
552
Phenanthrene
Mg/L
0.0191 U
0.0327 U
NS
0.0402 U
6.4 U
90
27.4
76.3
Pyrene
Mg/L
0.0159 J
0.0561 U
NS
0.0442 U
7.4
8.75
10.1
5.51
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Ethane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Methane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Chloride
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Page 22 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW14R-GW-008
MW14R-GW-NA1
MW14R-GW-00?
MW14R-GW-010
MW14R-GW-011
MW14R-GW-012
MW14R-GW-013
MW14R-GW-014
MW14R-GW-015
Date:
May-98
Jul-??
Nov-01
Mar-03
Jun-03
Sep-03
Dec-03
Mar-04
Jun-04
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.904
NA
0.61
0.0040 U
0.0040 U
0.0026
0.0015 U
0.00200 B
0.00064
Benzene
mq/l
10
7.3
3.4
0.9
12
2.33
5.?4
8.13
18.8
Ethylbenzene
mq/l
40.6
2.9
1.0 U
1.0 U
17.8
0.43 U
4.46
4.86
24.2
Toluene
mq/l
1.6
1. U
6.3
1.0 U
1.0 U
0.25 U
0.47
1.84
1.24
Xylenes
mq/l
55.8
9.3
31.2
18.6
26.5
2.3
15.8
19.3
42.4
Acenaphthene
mq/l
111
20. U
36.7
21.3
23.6
2.87
27.5
24.2
32.6
Acenaphthylene
mq/l
138
124
139
61
74.9
0.055 U
81.9
69.8
105
Anthracene
mq/l
17.7
10.7
18.4
3.4
3.6
1.38
6.5
5.16
7.32
Benzo(a) anthracene
mq/l
0.86
0.?
3.06
0.16
0.34
0.268
0.366
0.368
0.28
Benzo(a)pyrene
mq/l
0.056 U
0.4
1.82
0.19 U
0.19 U
0.050 U
0.16
0.231
0.029 U
Benzo(b)fluoranthene
M9/L
0.056 U
0.2
0.10 u
0.10 U
0.10 U
0.035 U
0.035 U
0.099
0.038 U
Benzo(g,h,i) perylene
M9/L
0.146
0.3
0.82
0.10 U
0.10 U
0.141
0.087
0.145
0.036 U
Benzo(k)fluoranthene
M9/L
0.056 U
0.2
0.52
0.10 U
0.10 U
0.038 U
0.062
0.14 U
0.14 U
Chrysene
M9/L
0.056 U
0.?
1.56
0.10 u
0.2
0.20?
0.234
0.235
0.124
Dibenzo (a, h) anthracene
M9/L
0.056 U
0.1 u
0.12
0.10 u
0.10 u
0.03? U
0.03? U
0.025 U
0.025 U
Fluoranthene
M9/L
9.5
2. U
10 u
2.9
4.6
1.92
5.05
8.67
4.93
Fluorene
M9/L
108
23.4
54.9
0.19 U
0.19 U
0.042 U
0.042 U
11.2
0.26 U
lndeno( 1,2,3-cd) pyrene
M9/L
0.056 U
0.1
0.56
0.10 U
0.10 U
0.034 U
0.083
0.132
0.038 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
160
2?
15.?
1.?
?.5
0.218
1.88
2.45
20.7
Phenanthrene
M9/L
77.7
18.3
75.3
0.91
26.3
0.342
19.4
10.9
25.4
Pyrene
M9/L
6.6
11.6
19 U
4
3.6
1.79
3.87
3.48
2.12
MNA Parameters
Ethylene
mg/L
NA
NA
0.007 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
Ethane
mg/L
NA
NA
0.007 U
0.010 U
0.010 U
0.101 U
0.010 U
0.010 U
0.008 U
Methane
mg/L
0.04
0.007 U
0.033
0.009
0.021
0.013
0.103
0.097
0.043
Alkalinity
mg/L
256
242
302
254
220
245
272
267
226
Nitrogen, Ammonia
mg/L
1 U
0.144
1.0 U
1.0 U
0.37
0.15
0.41
0.49
0.93
Nitrogen, Total Kjeldahl
mg/L
10 U
0.94
10 U
10 U
0.74
0.45
0.53
0.88
1.28
Orthophosphate
mg/L
0.1 U
0.3 U
0.46
0.54
0.51
0.46
0.30 U
0.30 U
0.30 U
Sulfide, Total
mg/L
0.1 U
0.1 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
2.9
3.3
3.4
3
3.5
2.7
2.7
2.6
2.9
Chloride
mg/L
33.9
25
26.9
36.8
31.5
33.5
36.1
35.8
43.5
Nitrogen, Nitrate
mg/L
1.3
1
0.1 U
0.1 U
0.1 U
6.7
0.1 U
0.1 U
0.4
Nitrogen, Nitrite
mg/L
0.3
0.3
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
82
149
429
319
362
210
326
345
649
Iron, Dissolved
mg/L
NS
0.03 U
0.274
0.123
0.063
0.030 U
0.142
0.463
1.2
Page 23 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW14R-GW-016
MW14R-GW-017
MW14R-GW-018
MW14R-GW-019
MW14R-GW-020
MW14R-GW-021
MW14 R-GW-022
MW14R-GW-023
MW14R-GW-024
Date:
Sep-04
Dec-04
Mar-05
Jun-05
Sep-05
Dec-05
Mar-06
Jun-06
Sep-06
Dam Position:
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Dam Up
Dam Up
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.00268
0.0025
0.0076
NS
NS
NS
NS
NS
NS
Benzene
mq/l
14
7.61
0.34
11
17.2
1.37
0.500 U
11.0
4.53
Ethylbenzene
mq/l
12.8
4.87
0.43 U
13.8
24.2
1.00 U
1.00 U
12.0
4.72
Toluene
mq/l
1.01
0.64
0.25 U
0.94
0.7
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
35.2
17.7
0.85
20.4
31.8
3.67
3.00 U
16.2
11.3
Acenaphthene
mq/l
25.5
34.3
8.12
33.6
33.5
20.4
2.56
14.7
20.1
Acenaphthylene
mq/l
116
121
18.5
74.1
80.2
52.7
6.4
38.5
48.2
Anthracene
mq/l
6.87
7.69
2.36
6.81
6.99
6.79
0.523
2.04
4.80
Benzo(a) anthracene
mq/l
0.35 U
0.44
0.206
0.422
0.26
0.244
0.29
0.117
0.199
Benzo(a)pyrene
mq/l
0.31 U
0.059 U
0.217
0.308
0.11
0.0370 U
0.195
0.0915 J
0.152
Benzo(b)fluoranthene
M9/L
0.40 U
0.078 U
0.12
0.142
0.038 U
0.0230 U
0.0859
0.0632 J
0.104
Benzo(g,h,i)perylene
M9/L
0.38 U
0.073 U
0.094
0.073
0.033 U
0.0781
0.308
0.0417 J
0.00900 U
Benzo(k)fluoranthene
M9/L
1.5 U
0.2? U
0.024 U
0.024 U
0.024 U
0.0320 U
0.149
0.0325 J
0.0393 J
Chrysene
M9/L
0.32 U
0.28 U
0.297
0.37
0.212
0.285
0.349
0.101
0.245
Dibenzo (a, h) anthracene
M9/L
0.26 U
0.051 U
0.034 U
0.034 U
0.034 U
0.0330 U
0.0330 U
0.0100 U
0.0100 u
Fluoranthene
M9/L
4.35
6
2.99
6.08
5.25
4.58
1.16
1.55
3.22
Fluorene
M9/L
0.28 U
0.053 U
0.030 U
0.030 U
0.030 U
14.1
0.828
8.65
14.3
lndeno( 1,2,3-cd) pyrene
M9/L
0.40 U
0.078 U
0.104
0.071
0.039 U
0.0380 U
0.111
0.0393 J
0.00700 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
2.19
0.395
0.952
3.02
Naphthalene
M9/L
4.69
4.12
0.38
7.16
5.82
1.14
0.173
2.88
11.9
Phenanthrene
M9/L
22.9
10.7
2.81
20.3
20.2
16.3
0.423
2.19
11.1
Pyrene
M9/L
1.2 U
5.6
2.35
15.1
13.4
13.1
1.03
3.37
8.27
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
Methane
mg/L
0.044
0.091
0.007 U
0.044
0.041
0.007 U
0.007 U
0.029
0.067
Alkalinity
mg/L
241
271
NA
139
243
267
243
244
272
Nitrogen, Ammonia
mg/L
0.92
0.92
0.30 U
0.4
0.57
0.30 U
0.30 U
0.30 U
0.30 U
Nitrogen, Total Kjeldahl
mg/L
1.17
1.22
0.60 U
0.67
0.79
0.60 U
0.60 U
0.61
0.76
Orthophosphate
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.44
0.30 U
0.30 U
0.30 U
0.30 U
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
3.5
3.8
3.7
3
3.64
3.16
2.52
2.81
2.84
Chloride
mg/L
50.5
51.4
62.7
39.8
33.6
44.5
48.6
40.2
35.0
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
3.1
0.1 U
0.1 U
3
4.5
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
726
761
120
346
558
267
88.1
423
367
Iron, Dissolved
mg/L
1.15
1.08
0.030 U
0.031
0.181
0.037
0.030 U
0.050
0.055
Page 24 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW14R-GW-025
MW14R-GW-026
MW14R-GW-027
MW14R-GW-028
MW14R-GW-02?
MW14R-GW-030
MW14R-GW-031
MW14R-GW-032
MW14RR-GW-033
Date:
Dec-06
Mar-07
Jun-07
Sep-07
Nov-07
Sep-08
Sep-0?
Sep-10
Sep-11
Dam Position:
Dam Up
Dam Up
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.500 U
1.05
10.2
10.6
0.500 U
21.?
4.90
4.19
0.500 U
Ethylbenzene
mq/l
1.00 U
1.00 U
14.1
20.0
1.00 U
5.65
1.87
2.91
1.00 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
3.00 U
3.00 U
14.3
22.7
3.00 U
23.6
16.7
16.9
3.00 U
Acenaphthene
mq/l
5.56
4.87
27.8
37.5
5.93
32.8
37.2
37.2
2.54
Acenaphthylene
mq/l
11.1
8.48
80.1
92.5
13.8
93.8
95.2
72.7
4.37
Anthracene
mq/l
2.43
0.707
4.61
6.43
3.00
5.93
7.31
6.89
0.550 J
Benzo (a) a nthracene
mq/l
0.16?
0.300
0.215
0.221
0.718
0.62?
0.1 ?5
0.14?
0.131
Benzo(a) pyrene
mq/l
0.110
0.366
0.162
0.152
0.8?1
0.546
0.102
0.0605 J
0.190
Benzo(b)fluoranthene
M9/L
0.0972 J
0.252
0.116
0.124
0.555
0.2?5
0.0571 J
0.0676 J
0.146
Benzo (g, h,i) pery lene
M9/L
0.00900 U
0.139 J
0.0365 J
0.0300 J
0.557
0.242
0.0312 J
0.00800 U
0.175 J
Benzo(k)fluoranthene
M9/L
0.0583 J
0.121
0.0495 J
0.0466 J
0.288
0.201
0.0323 J
0.00700 U
0.0690 J
Chrysene
M9/L
0.146
0.301
0.217
0.24?
0.72?
0.778
0.190
0.225
0.173
Dibenzo(a,h) anthracene
M9/L
0.0100 U
0.0181 J
0.0100 u
0.0100 u
0.0714 J
0.0357 J
0.0100 U
0.0100 u
0.0122 J
Fluoranthene
M9/L
3.11
2.06
3.35
4.38
3.64
5.06
4.40
3.41
0.283
Fluorene
M9/L
0.0100 U
0.0100 U
23.9
27.4
4.7
35.5
0.0160 U
0.0160 U
0.750
In deno (1,2,3-cd) pyren e
M9/L
0.00700 U
0.181
0.0435 J
0.0648 J
0.431
0.198
0.0299 J
0.00600 U
0.131
2-Methylnaphthalene
M9/L
0.696
0.0520 U
1.87
3.58
0.733
3.14
3.26
0.0250 U
0.148 J, B
Naphthalene
M9/L
0.603
0.0540 U
5.30
6.62
0.31
3.33
257
1.50
0.315 B, LI
Phenanthrene
M9/L
1.85
0.493
13.3
18.6
6.75
16.0
20.5
13.1
0.230
Pyrene
M9/L
4.58
2.24
7.35
11.4
2.76
3.51
3.18
2.21
0.307
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
NS
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
NS
Methane
mg/L
0.007 U
0.007 U
0.057
0.061
0.007 U
0.052
0.035
0.024
NS
Alkalinity
mg/L
267
225
216
217
292
204
211
250
NS
Nitrogen, Ammonia
mg/L
0.30 U
0.30 U
0.33
0.62
0.30 U
0.48
0.90
0.97
NS
Nitrogen, Total Kjeldahl
mg/L
0.63
0.60 U
0.67
0.98
4.58
1.38
0.50 U
0.84
NS
Orthophosphate
mg/L
0.30 U
0.30 U
0.11
0.10 U
0.12
0.25
0.12
0.26
NS
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
NS
Total Organic Carbon
mg/L
2.24
3.13
3.01
2.90
2.59
3.36
3.03
3.34
NS
Chloride
mg/L
38.6
42.5
38.7
28.2
26.7
23.0
27.0
25.2
NS
Nitrogen, Nitrate
mg/L
3.3
5.9
0.1 U
0.1 U
3.4
0.1 U
0.1 U
0.1 U
NS
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
NS
Sulfate
mg/L
103
119
733
700
115
834
693
591
NS
Iron, Dissolved
mg/L
0.030 U
0.030 U
0.125
0.421
0.100 U
0.579
0.714
0.800
NS
Page 25 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW14RR-GW-034
MW14RR-GW-035
MW14RR-GW-036
MW14RR-GW-037
MW14RR-GW-038
MW14RR-GW-03?
MW14RR-GW-040
MW14RR-GW-041
Date:
Sep-12
Sep-13
Sep-14
Sep-15
Sep-16
Sep-17
Nov-18
Oct-19
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
1.00 U
1.00 U
2.92
1.37
1.00 U
1.00 U
1.00 U
1.97 J+
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
3.00 U
3.00 U
10.5
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.473
0.0324 U
1.41
0.670
2.64
1.06
3.34
3.66
Acenaphthylene
mq/l
2.39
0.0361 J
10.3
4.47
14.3
6.16
12.6
16.4
Anthracene
mq/l
0.0947 J
0.0185 U
0.0529 J
0.0555 J
0.336
0.0470 J
0.111 J
0.362
Benzo(a) anthracene
mq/l
0.0200 U
0.0329 J, B
0.0305 J,B
0.0252 J
0.0140 U
0.0122 U
0.0750 U
0.0412 U
Benzo(a)pyrene
mq/l
0.0184 J
0.0176 U
0.0176 U
0.0307 J
0.0140 U
0.0143 U
0.0779 U
0.0362 U
Benzo(b)fluoranthene
M9/L
0.0280 U
0.0185 U
0.0185 U
0.0498 J
0.0147 U
0.0280 J
0.102 U
0.0734 U
Benzo(g,h,i) perylene
M9/L
0.00800 U
0.0130 J, B
0.0120 U
0.0244 J
0.00956 U
0.0173 U
0.0856 U
0.0482 U
Benzo(k)fluoranthene
M9/L
0.00700 U
0.0139 U
0.0139 U
0.0171 J
0.0110 U
0.0184 U
0.0731 U
0.0573 U
Chrysene
M9/L
0.0227 J
0.0148 U
0.0148 U
0.0407 J
0.0118 U
0.0122 U
0.0779 U
0.0683 U
Dibenzo(a,h) anthracene
M9/L
0.0100 U
0.0120 U
0.0120 U
0.0120 U
0.00956 U
0.0173 U
0.108 U
0.0563 U
Fluoranthene
M9/L
0.118
0.0148 U
0.0191 J
0.119
0.112
0.0500 U
0.0837 U
0.0780 J
Fluorene
M9/L
0.0160 U
0.0213 U
0.367
0.164
0.544
0.129
0.493
0.490
lndeno(1,2,3-cd) pyrene
M9/L
0.00600 U
0.0157 U
0.0157 U
0.0188 J
0.0125 U
0.0173 U
0.121 U
0.0482 U
2-Methylnaphthalene
M9/L
0.100 U
0.0343 U
0.0792 J
0.0437 J
0.0307 J
0.0180 J
0.0827 U
0.0764 U
Naphthalene
M9/L
0.0460 U
0.0352 U
5.22
^.66
0.224 J
0.37
0.413 J
0.774
Phenanthrene
M9/L
0.00500 U
0.0241 U
0.197
0.215
0.940
0.0799 J
0.214
0.464
Pyrene
M9/L
0.0799 J
0.0163 J, B
0.0274 J
0.114
0.133
0.0561 U
0.104 J
0.0909 J
MNA Parameters
Ethylene
mg/L
0.010 U
NS
NS
NS
NS
NS
NS
NS
Ethane
mg/L
0.010 U
NS
NS
NS
NS
NS
NS
NS
Methane
mg/L
0.007 U
NS
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
472
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
0.84
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
0.54
NS
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
0.73
NS
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
0.10 U
NS
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
2.52
NS
NS
NS
NS
NS
NS
NS
Chloride
mg/L
222
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
1.1
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
0.1 U
NS
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
1,050
NS
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
0.100 U
NS
NS
NS
NS
NS
NS
NS
Page 26 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW23-GW-004
MW23R-GW-005
MW23R-GW-006
MW23R-GW-007
MW23R-GW-008
MW23R-GW-NA1
MW23R-GW-009
MW23R-GW-010
MW23R-GW-011
Date:
Aug-95
Dec-96
May-97
Nov-97
May-98
Jul-99
Nov-01
Mar-03
Jun-03
Dam Position:
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.0050 U
0.0156
0.0322
0.842
0.316
NA
0.0040 U
0.0040 U
0.0040 U
Benzene
mq/l
6.7
6.9
17.5
1.4
0.5 U
25.2
1.8
1.2
0.65
Ethylbenzene
mq/l
18.2
1.0 U
8.2
1.0 U
1.0 U
10. U
1.0 U
1.0 U
1.0 U
Toluene
mq/l
1.0 U
1.0 u
1.0 U
1.0 U
1.0 U
10. u
1.0 U
1.0 U
1.0 U
Xylenes
mq/l
19.6
3.0 U
10.4
3.0 U
3.0 U
10. u
3.0 U
3.0 U
3.0 U
Acenaphthene
mq/l
52
11.4
44.3
16.4
15.1
123
28.8
37.8
20.3
Acenaphthylene
mq/l
90
10.1
65.1
20.1
13.1
134
27.9
40.4
10.7
Anthracene
mq/l
23
1.35
4.8
2.71
2.1
7.5
2.06
1.8
1.1
Benzo(a) anthracene
mq/l
0.13 U
0.17
0.16 U
0.328
0.59
0.1 U
0.10 U
0.13 U
0.13 U
Benzo(a)pyrene
mq/l
0.23 U
0.12
0.43 U
0.055 U
0.056 U
0.1 U
0.10 U
0.19 U
0.19 U
Benzo(b)fluoranthene
M9/L
0.18 U
0.15 U
0.075 U
0.055 U
0.056 U
0.1 U
0.10 U
0.10 U
0.10 U
Benzo(g,h,i) perylene
M9/L
0.76 U
0.18 U
0.32 U
0.055 U
0.056 U
0.1 U
0.10 U
0.10 U
0.10 U
Benzo(k)fluoranthene
M9/L
0.17 U
0.12 U
0.12 U
0.055 U
0.056 U
0.1 U
0.10 U
0.10 U
0.10 u
Chrysene
M9/L
1.5 U
0.12 U
0.11 U
0.244
0.356
0.1 U
0.10 U
0.10 u
0.10 u
Dibenzo (a, h) anthracene
M9/L
0.3 U
0.13 U
0.10 u
0.055 U
0.056 U
0.1 u
0.10 u
0.10 u
0.10 u
Fluoranthene
M9/L
6.4
0.9
3.25
2.2
2.18
2. U
0.10 u
2.4
1.8
Fluorene
M9/L
47
5.58
39.7
0.11 U
5.5
31
2.77
0.19 U
2.5
lndeno( 1,2,3-cd) pyrene
M9/L
0.43 U
0.13 U
0.26 U
0.055 U
0.056 U
0.1 U
0.10 U
0.10 U
0.10 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
210
1.88
24.2
0.738
0.056 U
16
0.37
0.72
1.3
Phenanthrene
M9/L
49
4.48
21.1
10.5
6.37
21.3
13.3
6.1
1.6
Pyrene
M9/L
4
0.73
0.55 U
1.44
2.83
2. U
0.19 U
3.2
2.3
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NA
NA
0.07 U
0.010 U
0.010 U
Ethane
mg/L
NS
NS
NS
NS
NA
NA
0.07 U
0.010 U
0.010 U
Methane
mg/L
NS
NS
NS
NS
0.08
0.0363
0.036
0.039
0.04
Alkalinity
mg/L
NS
NS
NS
NS
236
198
329
366
392
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
1 U
1.61
1.5
1.0 U
1.32
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
10 U
2.07
10 U
10 U
1.24
Orthophosphate
mg/L
NS
NS
NS
NS
0.1 U
0.3 U
0.30 U
0.67
0.78
Sulfide, Total
mg/L
NS
NS
NS
NS
0.1 U
0.1 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
NS
NS
NS
NS
3.6
3.3
3.8
4.1
6.6
Chloride
mg/L
NS
NS
NS
NS
110
55
16.7
17.6
15.2
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
NS
NS
NS
NS
1,050
1,140
548
395
652
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
7.13
17
15.2
12.9
Page 27 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW23R-GW-012
MW23R-GW-013
MW23R-GW-014
MW23R-GW-015
MW23R-GW-0U
MW23R-GW-017
MW23R-GW-018
MW23R-GW-01?
MW23R-GW-020
Date:
Sep-03
Dec-03
Mar-04
Jun-04
Sep-04
Dec-04
Mar-05
Jun-05
Sep-05
Dam Position:
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.0015 U
0.0015 U
0.0011 1 B
0.00050 U
0.00050 U
0.00050 U
0.0016 U
NS
NS
Benzene
Mg/L
43.8
4.39
1.62
0.25 U
1.04
0.45
66.6
2.27
3.64
Ethylbenzene
Mg/L
30.8
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
49
1.86
0.44 U
Toluene
Mg/L
1.33
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
2.29
0.12
0.21
Xylenes
Mg/L
13.4
2.19
1.5
0.38 U
0.6
0.38 U
45.2
1.41
2.9
Acenaphthene
Mg/L
42.5
46.3
47.8
21.7
29.3
26.6
40.9
23.6
27
Acenaphthylene
Mg/L
52.3
36.6
34.2
8.5
16.8
14.1
48
12.8
17.1
Anthracene
Mg/L
3.46
3.04
1.83
0.361
1.29
1.13
3.47
2.12
1.37
Benzo (a) anthracene
Mg/L
0.163
0.145
0.122
0.052
0.145
0.075
O.U?
0.019 U
0.046
Benzo(a) pyrene
Mg/L
0.050 U
0.050 U
0.029 U
0.029 U
0.030 U
0.030 U
0.019 U
0.020 U
0.020 U
Benzo (b)fluoranthene
Mg/L
0.035 U
0.035 U
0.038 U
0.038 U
0.040 U
0.039 U
0.038 U
0.037 U
0.038 U
Benzo (g ,h,i) perylene
Mg/L
0.035 U
0.035 U
0.036 U
0.036 U
0.038 U
0.037 U
0.033 U
0.032 U
0.033 U
Benzo (k) f luora nthene
Mg/L
0.038 U
0.038 U
0.14 U
0.14 U
0.15 U
0.14 U
0.023 U
0.023 U
0.024 U
Chrysene
Mg/L
0.076
0.064
0.059
0.054
0.059
0.05
0.094
0.034
0.026
Dibenzo(a,h) anthracene
Mg/L
0.03? U
0.03? U
0.025 U
0.025 U
0.026 U
0.026 U
0.034 U
0.033 U
0.034 U
Fluoranthene
Mg/L
2.87
0.049 U
0.067 U
1.69
2.36
2.25
3.72
2.63
3.03
Fluorene
Mg/L
17.7
0.042 U
0.026 U
2.12
0.027 U
0.027 U
0.030 U
0.029 U
0.030 U
lndeno(l ,2,3-cd) pyrene
Mg/L
0.034 U
0.034 U
0.038 U
0.038 U
0.040 U
0.039 U
0.039 U
0.038 U
0.039 U
2-Methylnaphthalene
Mg/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
Mg/L
20.?
0.375
0.622
0.042 U
0.304
0.48
32.2
0.544
0.529
Phenanthrene
Mg/L
15.1
11.9
11.7
0.018 U
0.591
0.35
13.9
7.67
4.73
Pyrene
Mg/L
0.5 U
1.56
1.29
0.702
0.439
0.81
0.779
7.64
5.5
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
Methane
mg/L
0.126
0.078
0.04
0.04
0.042
0.04
0.068
0.034
0.034
Alkalinity
mg/L
241
327
364
474
422
462
NA
412
367
Nitrogen, Ammonia
mg/L
1.26
1.62
1.42
1.23
1.02
1.1
1.24
0.88
1.55
Nitrogen, Total Kjeldahl
mg/L
1.32
1.95
1.71
1.67
1.31
1.44
1.43
1
1.83
Orthophosphate
mg/L
0.62
0.32
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.120 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
2.9
3.9
3.7
5.2
5.5
5.5
3.8
5.9
6.7
Chloride
mg/L
28.4
21
16.8
10.9
12.1
11.3
28.5
13.2
16.7
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
673
702
418
602
426
53.2
1,010
1,010
893
Iron, Dissolved
mg/L
8.24
13.1
13.9
9.88
9.79
12.1
12.1
10.3
16.6
Page 28 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW23R-GW-021
MW23R-GW-022
MW23R-GW-023
MW23R-GW-024
MW23R-GW-025
MW23R-GW-026
MW23R-GW-027
MW23R-GW-028
MW23R-GW-02?
Date:
Dec-05
Mar-06
Jun-06
Sep-06
Dec-06
Mar-07
Jun-07
Sep-07
Nov-07
Dam Position:
Dam Up
Dam Up
Dam Down
Dam Down
Dam Up
Dam Up
Dam Down
Dam Down
Dam Up
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
31.2
54.1
0.500 U
6.31
40.3
34.0
1.23
0.500 U
21.2
Ethylbenzene
mq/l
16.8
60.5
1.00 U
1.00 u
17.7
23.3
1.00 U
1.00 U
9.88
Toluene
mq/l
1.01
2.27
1.00 U
1.00 u
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
9.16
19.6
3.00 U
3.14
7.01
21.6
3.00 U
3.00 U
11.8
Acenaphthene
mq/l
33.6
42.6
17.0
30.9
41.5
41.7
24.2
16.1
39.1
Acenaphthylene
mq/l
30.3
0.850 U
9.00
20.8
31.0
30.6
15.6
9.29
31.60
Anthracene
mq/l
2.26
2.83
1.37
1.81
3.62
3.05
1.14
0.969
1.81
Benzo(a) anthracene
mq/l
0.0713
0.0736
0.0539 J
0.0532 J
0.0763 J
0.0828 J
0.0404 J
0.0510 J
0.0892 J
Benzo(a)pyrene
mq/l
0.0370 U
0.0370 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
Benzo(b)fluoranthene
M9/L
0.0230 U
0.0230 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
Benzo(g,h,i)perylene
M9/L
0.0190 U
0.0190 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
Benzo(k)fluoranthene
M9/L
0.0320 U
0.0320 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
Chrysene
M9/L
0.109
0.0964
0.0343 J
0.0733 J
0.0796 J
0.0665 J
0.0497 J
0.102
0.110
Dibenzo(a,h) anthracene
M9/L
0.0330 U
0.0330 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Fluoranthene
M9/L
3.37
3.04
2.14
1.77
4.20
3.51
2.65
2.71
3.32
Fluorene
M9/L
19.4
24.8
0.0100 U
14.1
23.4
21.1
0.0100 U
0.0100 U
23.2
lndeno( 1,2,3-cd) pyrene
M9/L
0.0380 U
0.0380 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
2-Methylnaphthalene
M9/L
0.768
0.120 U
0.0520 U
0.663
1.25
1.11
0.167 J
0.237
0.946
Naphthalene
M9/L
16.5
14.3
0.0540 U
0.607
3.52
3.88
0.22
0.0540 U
2.7?
Phenanthrene
M9/L
10.3
14.2
2.11
7.00
13.3
10.1
2.2
0.00700 U
8.40
Pyrene
M9/L
6.68
0.0360 U
4.65
6.24
9.43
7.30
2.54
1.91
2.04
MNA Parameters
Ethylene
mg/L
0.013 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.007 U
0.010 U
Ethane
mg/L
0.013 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.007 U
0.010 U
Methane
mg/L
0.058
0.080
0.047
0.037
0.054
0.044
0.027
0.018
0.044
Alkalinity
mg/L
333
243
405
264
263
184
336
494
267
Nitrogen, Ammonia
mg/L
1.34
0.95
0.65
1.46
1.12
0.69
0.65
0.62
0.75
Nitrogen, Total Kjeldahl
mg/L
1.66
1.25
1.05
1.72
1.24
0.98
1.26
1.01
1.13
Orthophosphate
mg/L
0.30 U
0.30 U
0.32
0.30 U
0.30 U
0.30 U
0.16
0.21
0.13
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
4.01
6.59
5.31
3.68
2.50
2.08
4.38
5.22
2.64
Chloride
mg/L
23.3
28.4
13.3
17.8
23.3
22.1
14.6
5.5
19.0
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
0.5 U
0.5 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.5 U
0.5 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
862
701
989
1,110
859
919
1,210
787
1,340
Iron, Dissolved
mg/L
13.2
8.52
9.26
15.7
11.9
9.66
8.18
7.45
10.3
Page 29 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW23R-GW-030
MW23R-GW-031
MW23R-GW-032
MW23R-GW-033
MW23R-GW-034
MW23R-GW-035
MW23R-GW-036
MW23R-GW-037
MW23R-GW-038
Date:
Sep-08
Sep-09
Sep-10
Sep-11
Sep-12
Sep-13
Sep-14
Sep-15
Sep-16
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U C9
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U C9
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
13.5
13.1
7.35
6.06
5.46
5.49 B
10.5
10.6
5.40
Acenaphthylene
mq/l
8.17
5.18
2.98
3.29
3.33
3.71
4.68
5.38
3.02
Anthracene
mq/l
0.497
0.361
0.0100 U
0.316
0.219
0.283 B
0.195
0.230
0.108
Benzo(a) anthracene
mq/l
0.0521 J
0.0664 J
0.0822 J
0.0765 J
0.0589 J
0.0592 J, B
0.0678 J,B
0.0490 J
0.0291 J
Benzo(a)pyrene
mq/l
0.0320 U
0.00800 U
0.00800 U
0.00800 U
0.00800 U
0.0170 U
0.0176 U
0.0176 U
0.0202 J
Benzo(b)fluoranthene
M9/L
0.0130 U
0.0280 U
0.0280 U
0.0280 U
0.0280 U
0.0179 U
0.0185 U
0.0185 U
0.0147 J
Benzo(g,h,i)perylene
M9/L
0.00900 U
0.00800 U
0.00800 U
0.00800 U
0.00800 U
0.01 16 U
0.0120 U
0.0120 U
0.0113 J
Benzo(k)fluoranthene
M9/L
0.0150 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.0134 U
0.0139 U
0.0139 U
0.0110 U
Chrysene
M9/L
0.0926 J
0.0683 J
0.111
0.0883 J
0.0732 J
0.0348 J, B
0.0383 J,B
0.0542 J
0.0271 J
Dibenzo(a,h) anthracene
M9/L
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.01 16 U
0.0120 U
0.0120 U
0.00956 U
Fluoranthene
M9/L
2.54
2.46
1.52
1.77
0.995
0.804 B
0.815
1.16
0.505
Fluorene
M9/L
0.0100 U
0.0160 U
0.814
0.0160 U
0.0160 U
0.409 B
0.546
0.466
0.210
lndeno( 1,2,3-cd) pyrene
M9/L
0.00700 U
0.00600 U
0.00600 U
0.00600 U
0.00600 U
0.0152 U
0.0157 U
0.0157 U
0.0125 U
2-Methylnaphthalene
M9/L
0.0520 U
0.0250 U
0.0250 U
0.100 U
0.131 J
0.0330 U
0.0343 U
0.0343 U
0.0272 U
Naphthalene
M9/L
0.0540 U
0.173 J
0.0460 U
0.280 B, LI
0.231
0.0580 J, B
0.121 J
0.0925 J
0.0651 J
Phenanthrene
M9/L
0.00700 U
0.00500 U
0.00500 U
0.43
0.00500 U
0.126 B
0.0542 J
0.0757 J
0.0259 J
Pyrene
M9/L
1.57
1.58
0.975
1.77
1.00
0.957 B
0.970
1.38
0.657
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
NS
NS
NS
NS
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
NS
NS
NS
NS
Methane
mg/L
0.054
0.051
0.029
0.024
0.049
NS
NS
NS
NS
Alkalinity
mg/L
413
416
486
431
494
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
0.89
1.36
0.99
1.15
1.11
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
1.08
0.66
1.44
0.88
0.66
NS
NS
NS
NS
Orthophosphate
mg/L
0.23
0.58
0.36
0.16
0.52
NS
NS
NS
NS
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
NS
NS
NS
NS
Total Organic Carbon
mg/L
5.19
5.29
4.88
2.85
2.71
NS
NS
NS
NS
Chloride
mg/L
43.9
24.3
46.5
293
106
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.2 U
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.6
0.1 U
0.2 U
NS
NS
NS
NS
Sulfate
mg/L
842
803
558
159
404
NS
NS
NS
NS
Iron, Dissolved
mg/L
8.27
14.2
11.3
12.1
17.5
NS
NS
NS
NS
Page 30 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW23R-GW-03?
MW23RR-GW-040
MW23RR-GW-041
MW23RR-GW-042
MW23RR-GW-043
MW36-GW-NA1
MW36-GW-00?
MW36-GW-010
Date:
Sep-17
Nov-18
Oct-19
Sep-20
Sep-21
Jul-??
Nov-01
Mar-03
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NA
0.0040 U
0.0040 U
Benzene
mq/l
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
1. U
1.0 U
0.5 U
Ethylbenzene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1. U
1.0 U
1.0 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1. U
1.0 U
1.0 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
1. U
3.0 U
3.0 U
Acenaphthene
mq/l
4.28
11.2
8.11
2.93
3.51
2. U
0.19 U
0.19 U
Acenaphthylene
mq/l
3.55
7.13
4.05
1.34
1.74
2. U
0.19 U
0.19 U
Anthracene
mq/l
0.165
4.34
2.58
0.972
0.979
0.5 U
0.10 U
0.19 U
Benzo (a) a nthracene
mq/l
0.0410 J
0.154 J
0.182
0.0779 J
0.237
0.1 U
0.10 U
0.13 U
Benzo(a) pyrene
mq/l
0.0140 U
0.0723 U
0.0364 U
0.0379 U
0.0604 J
0.1 U
0.10 U
0.19 U
Benzo(b)fluoranthene
M9/L
0.0270 U
0.0946 U
0.0737 U
0.0768 U
0.0498 J
0.1 U
0.10 U
0.10 U
Benzo (g, h,i) pery lene
M9/L
0.0170 U
0.0795 U
0.0485 U
0.0505 U
0.0500 U
0.1 U
0.10 u
0.10 U
Benzo(k)fluoranthene
M9/L
0.0180 U
0.0679 U
0.0576 U
0.0600 U
0.0417 U
0.1 U
0.10 u
0.10 u
Chrysene
M9/L
0.0485 J
0.127 J
0.152
0.0722 J
0.168
0.1 U
0.10 u
0.10 u
Dibenzo(a,h) anthracene
M9/L
0.0170 U
0.100 U
0.0566 U
0.0589 U
0.0417 U
0.1 u
0.10 u
0.10 u
Fluoranthene
M9/L
0.888
1.89
1.95
1.20
1.58
0.2 U
0.10 u
0.19 U
Fluorene
M9/L
0.302
10.7
2.31
0.378
0.316
0.5 U
0.19 U
0.19 U
In deno (1,2,3-cd) pyren e
M9/L
0.0170 U
0.113 U
0.0485 U
0.0505 U
0.0500 U
0.1 U
0.10 u
0.10 U
2-Methylnaphthalene
M9/L
0.0158 J
0.0768 U
0.0783 J
0.0800 U
0.0417 U
NA
NA
NA
Naphthalene
M9/L
0.0826 J
0.175 U
0.394 U
0.411 U
0.394 J
2. U
0.10 U
0.10 U
Phenanthrene
M9/L
0.0436 U
20.1
13.0
1.50
0.933
0.5 U
0.10 u
0.10 U
Pyrene
M9/L
1.06
2.34
2.32
1.59
2.00
0.2 U
0.19 U
0.19 U
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NA
0.006 U
0.10 U
Ethane
mg/L
NS
NS
NS
NS
NS
NA
0.006 U
0.10 U
Methane
mg/L
NS
NS
NS
NS
NS
0.009 U
0.005
0.061
Alkalinity
mg/L
NS
NS
NS
NS
NS
270
398
324
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
0.1 U
1.0 U
1.0 U
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
0.639
10 U
10 U
Orthophosphate
mg/L
NS
NS
NS
NS
NS
0.3 U
0.7
0.89
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
0.1 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
3.4
1.6
1.9
Chloride
mg/L
NS
NS
NS
NS
NS
33.0
28.0
45.2
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
6.2
3.1
0.8
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
NS
NS
NS
NS
NS
158
91
120
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
0.03 U
0.030 U
0.030 U
Page 31 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
Date:
Dam Position:
MW36-GW-011
Jun-03
Dam Down
MW36-GW-012
Sep-03
Dam Up
MW36-GW-013
Dec-03
Dam Down
MW36-GW-014
Mar-04
Dam Down
MW36-GW-015
Jun-04
Dam Down
MW36-GW-016
Sep-04
Dam Down
MW36-GW-017
Dec-04
Dam Down
MW36-GW-018
Mar-05
Dam Up
MW36-GW-01?
Jun-05
Dam Down
C.omnliance Parameters
Units
Lead
mg/L
0.0040 U
0.0015 U
0.0015 U
0.00120 B
0.00050 U
0.00050 U
0.00050 U
0.0016 U
NS
Benzene
mq/l
0.5 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.1 70 U
Ethyl benzene
mq/l
1.0 U
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
0.63 U
Toluene
mq/l
1.0 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
0.09 U
Xylenes
mq/l
3.0 U
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
0.93 U
Acenaphthene
mq/l
0.19 U
0.031 U
0.073 U
0.073 U
0.073 U
0.073 U
0.077 U
0.13 U
0.13 U
Acenaphthylene
mq/l
0.19 U
0.055 U
0.12 U
0.12 U
0.12 U
0.12 U
0.13 U
0.18 U
0.17 U
Anthracene
mq/l
0.19 U
0.024 U
0.024 U
0.024 U
0.024 U
0.024 U
0.025 U
0.0096 U
0.0095 U
Benzo(a) anthracene
mq/l
0.13 U
0.028 U
0.033 U
0.033 U
0.033 U
0.033 U
0.035 U
0.020 U
0.019 U
Benzo(a)pyrene
mq/l
0.19 U
0.050 U
0.029 U
0.029 U
0.029 U
0.029 U
0.030 U
0.020 U
0.019 U
Benzo(b)fluoranthene
M9/L
0.10 U
0.035 U
0.038 U
0.038 U
0.038 U
0.038 U
0.040 U
0.038 U
0.038 U
Benzo(g, h,i) perylene
M9/L
0.10 U
0.035 U
0.036 U
0.036 U
0.036 U
0.036 U
0.038 U
0.033 U
0.033 U
Benzo(k)fluoranthene
M9/L
0.10 u
0.136
0.14 U
0.14 U
0.14 U
0.14 U
0.15 U
0.024 U
0.023 U
Chrysene
M9/L
0.10 u
0.032 U
0.030 U
0.030 U
0.030 U
0.030 U
0.032 U
0.021 U
0.020 U
Dibenzo(a,h) anthracene
M9/L
0.10 u
0.03? U
0.025 U
0.025 U
0.025 U
0.025 U
0.026 U
0.034 U
0.034 U
Fluoranthene
M9/L
0.19 U
0.049 U
0.067 U
0.067 U
0.067 U
0.067 U
0.070 U
0.033 U
0.033 U
Fluorene
M9/L
0.19 U
0.042 U
0.026 U
0.026 U
0.026 U
0.026 U
0.027 U
0.030 U
0.030 U
lndeno(1,2,3-cd) pyrene
M9/L
0.10 U
0.034 U
0.038 U
0.038 U
0.038 U
0.038 U
0.040 U
0.039 U
0.039 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
0.10 U
0.054 U
0.042 U
0.084
0.042 U
0.042 U
0.71
0.10 U
0.10 U
Phenanthrene
M9/L
0.10 U
0.035 U
0.018 U
0.018 U
0.018 U
0.018 U
0.019 U
0.015 U
0.015 U
Pyrene
M9/L
0.19 U
0.099 U
0.11 U
0.11 U
0.11 U
0.11 U
0.12 U
0.037 U
0.037 U
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.008 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.008 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
Methane
mg/L
0.007
0.007 U
0.007 U
0.006 U
0.006 U
0.165
0.007 U
0.007 U
0.007 U
Alkalinity
mg/L
341
286
329
319
341
344
312
NA
290
Nitrogen, Ammonia
mg/L
0.12
0.13
0.18
0.16
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
Nitrogen, Total Kjeldahl
mg/L
0.27
0.3
0.33
0.41
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
Orthophosphate
mg/L
0.93
0.65
0.37
0.30 U
0.42
0.30 U
0.8
0.38
0.30 U
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.1 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
1.9
1.9
1.6
1.5
1.8
1.8
2.6
2.2
2
Chloride
mg/L
50.4
40.2
40.1
66.4
83.6
62.5
68.8
50.6
66.5
Nitrogen, Nitrate
mg/L
4.8
2.9
3.6
3.7
3.4
1.7
1.5
5.2
3.7
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
119
101
115
121
111
83.4
239
152
201
Iron, Dissolved
mg/L
0.030 U
0.030 U
0.30 U
0.030 U
0.100 U
0.030 U
0.030 U
0.030 U
0.030 U
Page 32 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
Date:
Dam Position:
MW36-GW-020
Sep-05
Dam Down
MW36-GW-021
Dec-05
Dam Up
MW36-GW-022
Mar-06
Dam Up
MW36-GW-023
Jun-06
Dam Down
MW36-GW-024
Sep-06
Dam Down
MW36-GW-025
Dec-06
Dam Up
MW36-GW-026
Mar-07
Dam Up
MW36-GW-027
Jun-07
Dam Down
MW36-GW-028
Sep-07
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.10 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
0.44 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
mq/l
0.09 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
0.24 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.13 U
0.133 U
0.130 U
0.0490 U
0.0490 U
0.0490 U
0.0490 U
0.0490 U
0.0490 U
Acenaphthylene
mq/l
0.18 U
0.1 73 U
0.170 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
Anthracene
mq/l
0.0096 U
0.00949 U
0.00930 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Benzo(a) anthracene
mq/l
0.020 U
0.0194 U
0.02
0.0184 J
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.00300 U
Benzo(a)pyrene
mq/l
0.020 U
0.0378 U
0.0370 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
Benzo(b)fluoranthene
M9/L
0.038 U
0.0235 U
0.0230 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
Benzo(g,h,i) perylene
M9/L
0.033 U
0.0194 U
0.0190 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
Benzo(k)fluoranthene
M9/L
0.024 U
0.0327 U
0.0413
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
Chrysene
M9/L
0.021 U
0.0204 U
0.0222
0.0649 J
0.00500 U
0.00500 U
0.00500 U
0.00500 U
0.00500 U
Dibenzo(a,h) anthracene
M9/L
0.034 U
0.0337 U
0.0330 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Fluoranthene
M9/L
0.033 U
0.0327 U
0.0320 U
0.0687 J
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Fluorene
M9/L
0.030 U
0.0296 U
0.0290 U
0.0100 U
0.0100 u
0.0100 u
0.0100 u
0.0100 u
0.0100 u
lndeno(1,2,3-cd) pyrene
M9/L
0.039 U
0.0388 U
0.0416
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
2-Methylnaphthalene
M9/L
NA
0.122 U
0.120 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
Naphthalene
M9/L
0.10 U
0.102 U
0.100 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
Phenanthrene
M9/L
0.015 U
0.0153 U
0.0150 U
0.0240 J
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
Pyrene
M9/L
0.037 U
0.0367 U
0.0360 U
0.0758 J
0.0190 U
0.0190 U
0.0195 J
0.0190 U
0.0190 U
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
Methane
mg/L
0.07
0.007 U
0.007 U
0.009
0.007 U
0.007 U
0.010
0.007 U
0.007 U
Alkalinity
mg/L
371
299
247
332
298
254
241
273
348
Nitrogen, Ammonia
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.34
0.30 U
0.30 U
Nitrogen, Total Kjeldahl
mg/L
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
Orthophosphate
mg/L
0.71
0.30 U
0.30 U
0.30 U
0.35
0.30 U
0.30 U
0.35
0.29
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
1.92
2.14
1.90
1.49
1.78
1.72
2.71
2.56
2.47
Chloride
mg/L
44.1
57.6
46.7
42.5
45.5
42.5
57.0
77.7
55.4
Nitrogen, Nitrate
mg/L
1.5
5.1
6.9
3.1
2.5
2.1
4.1
5.9
3.3
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
107
174
87.2
117
142
120
133
281
167
Iron, Dissolved
mg/L
0.030 U
0.030 U
0.030 U
0.030 U
0.030 U
0.030 U
0.030 U
0.030 U
0.100 U
Page 33 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW36-GW-02?
MW36-GW-030
MW36-GW-031
MW36-GW-032
MW36-GW-033
MW36-GW-034
MW36-GW-035
MW36-GW-036
MW36-GW-037
Date:
Nov-07
Sep-08
Sep-09
Sep-10
Sep-11
Sep-12
Sep-13
Sep-14
Sep-15
Dam Position:
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethyl benzene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.0490 U
0.0490 U
0.0220 U
0.0220 U
0.0220 U
0.0220 U
0.0313 U
0.0324 U
0.0324 U
Acenaphthylene
mq/l
0.0850 U
0.0850 U
0.0870 U
0.0870 U
0.0870 U
0.0870 U
0.0321 U
0.0333 U
0.0333 U
Anthracene
mq/l
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0179 U
0.0185 U
0.0197 J
Benzo(a) anthracene
mq/l
0.00300 U
0.00300 U
0.00732 J
0.00500 U
0.0200 U
0.0200 U
0.0308 J, B
0.0301 J,B
0.0176 U
Benzo(a)pyrene
mq/l
0.0320 U
0.0320 U
0.0115 J
0.00800 U
0.00800 U
0.00800 U
0.0170 U
0.0176 U
0.0187 J
Benzo(b)fluoranthene
M9/L
0.0130 U
0.0130 U
0.0280 U
0.0280 U
0.0280 U
0.0280 U
0.0179 U
0.0185 U
0.0185 U
Benzo(g, h,i) perylene
M9/L
0.00900 U
0.00900 U
0.00800 U
0.00800 U
0.00800 U
0.00800 U
0.0116 U
0.0120 U
0.0120 U
Benzo(k)fluoranthene
M9/L
0.0150 U
0.0150 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.0134 U
0.0139 U
0.0139 U
Chrysene
M9/L
0.00500 U
0.00500 U
0.00800 U
0.00800 U
0.00800 U
0.00800 U
0.0143 U
0.0148 U
0.0213 J
Dibenzo(a,h) anthracene
M9/L
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0116 U
0.0120 U
0.0120 U
Fluoranthene
M9/L
0.0100 U
0.0100 U
0.0100 U
0.0100 u
0.0100 u
0.0100 u
0.0143 U
0.0148 U
0.0408 J
Fluorene
M9/L
0.0100 u
0.0100 u
0.01 60 U
0.0160 U
0.0160 U
0.0160 U
0.0205 U
0.0213 U
0.0213 U
lndeno(1,2,3-cd) pyrene
M9/L
0.00700 U
0.00700 U
0.00600 U
0.00600 U
0.00600 U
0.00600 U
0.0152 U
0.0157 U
0.0157 U
2-Methylnaphthalene
M9/L
0.0520 U
0.0520 U
0.0727 J
0.0250 U
0.100 U
0.100 U
0.0330 U
0.0403 J
0.0343 U
Naphthalene
M9/L
0.0540 U
0.0540 U
0.0565 J
0.0460 U
0.0460 U, LI
0.0460 U
0.0351 J, B
0.126 J
0.0352 U
Phenanthrene
M9/L
0.00700 U
0.00700 U
0.00627 J
0.00500 U
0.00500 U
0.00500 U
0.0232 U
0.0296 J
0.0648 J
Pyrene
M9/L
0.0190 U
0.0190 U
0.01 70 U
0.0170 U
0.0170 U
0.0170 U
0.0182 J, B
0.0162 J
0.0583 J
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.007 U
0.010 U
0.008 U
NS
NS
NS
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.007 U
0.010 U
0.008 U
NS
NS
NS
Methane
mg/L
0.007 U
0.038
0.098
0.035
0.007 U
0.006 U
NS
NS
NS
Alkalinity
mg/L
277
326
356
388
320
394
NS
NS
NS
Nitrogen, Ammonia
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.31
0.38
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
0.60 U
0.80
0.50 U
0.50 U
0.54
0.50 U
NS
NS
NS
Orthophosphate
mg/L
0.14
0.31
0.22
0.31
0.25
1.24
NS
NS
NS
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
NS
NS
NS
Total Organic Carbon
mg/L
2.06
2.37
1.80
1.59
1.93
1.56
NS
NS
NS
Chloride
mg/L
42.0
61.2
78.9
64.9
77.5
63.6
NS
NS
NS
Nitrogen, Nitrate
mg/L
3.7
2.8
2.5
1.7
3.0
2.3
NS
NS
NS
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
1.0
0.1 U
0.4
NS
NS
NS
Sulfate
mg/L
154
160
169
121
527
166
NS
NS
NS
Iron, Dissolved
mg/L
0.100 U
0.030 U
0.030 U
0.100 U
0.100 U
0.100 U
NS
NS
NS
Page 34 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW36-GW-038
MW36-GW-03?
MW36-GW-040
MW36-GW-041
MW37-GW-NA1
MW37-GW-00?
MW37-GW-010
MW37-GW-011
Date:
Sep-16
Sep-17
Nov-18
Oct-19
Jul-??
Nov-01
Mar-03
Jun-03
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NA
0.0040 U
0.0040 U
0.0040 U
Benzene
mq/l
0.500 U
0.500 U
NS
0.500 U
6.4
1.0 U
0.5 U
0.61
Ethylbenzene
mq/l
1.00 U
1.00 U
NS
1.00 U
1. U
1.0 U
1.0 U
1.0 U
Toluene
mq/l
1.00 U
1.00 U
NS
1.00 U
1. U
1.0 U
1.0 U
1.0 U
Xylenes
mq/l
3.00 U
3.00 U
NS
3.00 U
1. U
3.0 U
3.0 U
3.0 U
Acenaphthene
mq/l
0.0257 U
0.0122 U
NS
0.0460 U
33.9
1.4
1.4
3.4
Acenaphthylene
mq/l
0.0265 U
0.0100 U
NS
0.0840 U
20 U
0.19 U
0.19 U
0.19 U
Anthracene
mq/l
0.0278 J
0.0296 U
NS
0.0580 U
0.7
1.10 U
0.19 U
0.19 U
Benzo(a) anthracene
mq/l
0.0140 U
0.0122 U
NS
0.0820 U
0.1 U
0.10 U
0.13 U
0.13 U
Benzo(a)pyrene
mq/l
0.0140 U
0.0143 U
NS
0.0720 U
0.1 U
0.10 U
0.19 U
0.19 U
Benzo(b)fluoranthene
M9/L
0.0147 U
0.0276 U
NS
0.146 U
0.1 U
0.10 U
0.10 U
0.10 U
Benzo(g, h,i) perylene
M9/L
0.00956 U
0.0173 U
NS
0.0960 U
0.1 U
0.10 u
0.10 U
0.10 U
Benzo(k)fluoranthene
M9/L
0.0110 U
0.0184 U
NS
0.114 U
0.1 U
0.10 u
0.10 u
0.10 u
Chrysene
M9/L
0.0118 U
0.0112 U
NS
0.136 U
0.1 U
0.10 u
0.10 u
0.10 u
Dibenzo (a, h) anthracene
M9/L
0.00956 U
0.0173 U
NS
0.112 U
0.1 u
0.10 u
0.10 u
0.10 u
Fluoranthene
M9/L
0.0353 J
0.0500 U
NS
0.126 U
0.2 U
0.12
0.19 U
0.19 U
Fluorene
M9/L
0.0169 U
0.0122 U
NS
0.0380 U
5. U
0.19 U
0.19 U
0.39
lndeno( 1,2,3-cd) pyrene
M9/L
0.0125 U
0.0173 U
NS
0.0960 U
0.1 U
0.10 U
0.10 U
0.10 U
2-Methylnaphthalene
M9/L
0.0272 U
0.0102 U
NS
0.152 U
NA
NA
NA
NA
Naphthalene
M9/L
0.0279 U
0.0122 U
NS
0.780 U
2. U
0.10 U
0.10 U
0.10 U
Phenanthrene
M9/L
0.0834
0.0327 U
NS
0.0800 U
0.5 U
0.10 U
0.10 U
0.10 U
Pyrene
M9/L
0.0489 J
0.0561 U
NS
0.0880 U
0.2 U
0.19 U
0.19 U
0.19 U
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NA
0.007 U
0.007 U
0.010 U
Ethane
mg/L
NS
NS
NS
NS
NA
0.007 U
0.007 U
0.010 U
Methane
mg/L
NS
NS
NS
NS
0.0285
0.053
0.01
0.041
Alkalinity
mg/L
NS
NS
NS
NS
330
274
324
362
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
1.98
2.4
1.2
2.42
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
6.18
10 U
10 U
1.97
Orthophosphate
mg/L
NS
NS
NS
NS
0.3 U
0.30 U
0.54
1.13
Sulfide, Total
mg/L
NS
NS
NS
NS
0.8
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
NS
NS
NS
NS
7.3
4.1
3.8
4.9
Chloride
mg/L
NS
NS
NS
NS
41
23.8
23.1
26.1
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
0.1 U
0.1 U
0.1 U
0.2
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
NS
NS
NS
NS
454
982
770
886
Iron, Dissolved
mg/L
NS
NS
NS
NS
1.88
8.63
3.91
6.49
Page 35 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW37-GW-012
MW37-GW-013
MW37-GW-014
MW37-GW-015
MW37-GW-0U
MW37-GW-017
MW37-GW-018
MW37-GW-01?
MW37-GW-020
Date:
Sep-03
Dec-03
Mar-04
Jun-04
Sep-04
Dec-04
Mar-05
Jun-05
Sep-05
Dam Position:
Dam Up
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
0.0015 U
0.0015 U
0.00113 B
0.00050 U
0.00050 U
0.00050 U
0.0016 U
NS
NS
Benzene
mq/l
4.77
0.25 U
0.25 U
0.25 U
0.25 U
0.25 U
8.05
0.35
0.10 U
Ethylbenzene
mq/l
0.43 U
0.56
0.43 U
0.43 U
0.43 U
0.43 U
2.82
0.63 U
0.44 U
Toluene
mq/l
0.25 U
0.25 U
1.91
0.25 U
0.25 U
0.25 U
0.25 U
0.09 U
0.09 U
Xylenes
mq/l
1.28
0.53
0.38 U
0.38 U
0.38 U
0.38 U
0.69
0.22 U
0.24 U
Acenaphthene
mq/l
13.4
10.3
4.67
3.11
3.65
2.68
7.95
5.01
2.23
Acenaphthylene
mq/l
3.94
3.66
0.12 U
0.13 U
0.12 U
0.12 U
3.07
0.17 U
1.01
Anthracene
mq/l
0.024 U
0.024 U
0.024 U
0.025 U
0.131
0.025 U
0.0095 U
0.0095 U
0.057
Benzo(a) anthracene
mq/l
0.028 U
0.028 U
0.033 U
0.034 U
0.034 U
0.034 U
0.019 U
0.019 U
0.020 U
Benzo(a)pyrene
mq/l
0.050 U
0.050 U
0.029 U
0.030 U
0.030 U
0.030 U
0.019 U
0.019 U
0.020 U
Benzo(b)fluoranthene
M9/L
0.035 U
0.035 U
0.038 U
0.040 U
0.039 U
0.040 U
0.038 U
0.038 U
0.038 U
Benzo(g,h,i) perylene
M9/L
0.035 U
0.035 U
0.036 U
0.038 U
0.037 U
0.037 U
0.033 U
0.033 U
0.033 U
Benzo(k)fluoranthene
M9/L
0.038 U
0.038 U
0.14 U
0.15 U
0.14 U
0.15 U
0.023 U
0.023 U
0.024 U
Chrysene
M9/L
0.032 U
0.032 U
0.030 U
0.031 U
0.031 U
0.031 U
0.020 U
0.020 U
0.021 U
Dibenzo(a,h) anthracene
M9/L
0.09?
0.03? U
0.025 U
0.026 U
0.026 U
0.026 U
0.034 U
0.034 U
0.034 U
Fluoranthene
M9/L
0.049 U
0.049 U
0.067 U
0.070 U
0.068 U
0.070 U
0.033 U
0.033 U
0.033 U
Fluorene
M9/L
0.042 U
0.042 U
0.026 U
0.027 U
0.027 U
0.027 U
0.030 U
0.030 U
0.030 U
1 n den o (1,2,3- cd) pyre n e
M9/L
0.034 U
0.034 U
0.038 U
0.040 U
0.039 U
0.040 U
0.039 U
0.039 U
0.040 U
2-Methylnaphthalene
M9/L
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
M9/L
0.482
0.054 U
0.042 U
0.044 U
0.043 U
0.044 U
0.10 U
0.10 U
0.10 U
Phenanthrene
M9/L
0.035 U
0.035 U
0.018 U
0.019 U
0.018 U
0.019 U
0.015 U
0.015 U
0.016 U
Pyrene
M9/L
0.099 U
0.099 U
0.11 U
0.11 U
0.159
0.11 U
0.037 U
1.01
0.199
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
Methane
mg/L
0.207
0.235
0.156
0.028
0.075
0.069
0.092
0.041
0.031
Alkalinity
mg/L
294
323
351
433
445
475
NA
345
312
Nitrogen, Ammonia
mg/L
1.38
1.41
1.48
1.68
1.84
1.78
1.43
1.67
1.72
Nitrogen, Total Kjeldahl
mg/L
1.69
1.65
1.92
2.29
2.18
2
1.67
2.03
2.09
Orthophosphate
mg/L
0.99
0.54
0.55
1.04
0.68
0.42
0.34
0.68
0.43
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.1 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
3.5
2.7
3.5
6.4
5.6
5.1
4.5
4.7
4.38
Chloride
mg/L
29.1
32.7
29.6
21.9
16.5
13.6
38.3
25.8
19.3
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1
0.1 U
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
281
162
336
933
773
830
375
1,030
1,160
Iron, Dissolved
mg/L
4.65
3.57
5.35
2.81
6.73
7.69
5.91
4.03
11.8
Page 36 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW37-GW-021
MW37-GW-022
MW37-GW-023
MW37-GW-024
MW37-GW-025
MW37-GW-026
MW37-GW-027
MW37 - GW-028
MW37-GW-02?
Date:
Dec-05
Mar-06
Jun-06
Sep-06
Dec-06
Mar-07
Jun-07
Sep-07
Nov-07
Dam Position:
Dam Up
Dam Up
Dam Down
Dam Down
Dam Up
Dam Up
Dam Down
Dam Down
Dam Up
C.omnliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
4.14
0.820
0.500 U
0.500 U
2.50 U
0.500 U
0.500 U
2.50 U, HI
0.760
Ethyl benzene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
5.00 U
1.00 U
1.00 U
5.00 U, HI
1.00 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
5.00 U
1.00 U
1.00 U
5.00 U, HI
1.00 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
15.0 U
3.00 U
3.00 U
15.0 U, HI
3.00 U
Acenaphthene
mq/l
2.53
15.0
1.43
2.86
10.6
12.1
5.74
4.55
7.87
Acenaphthylene
mq/l
0.679
5.87
0.0850 U
0.793
2.35
0.0850 U
0.0850 U
0.0850 U
1.81
Anthracene
mq/l
0.00930 U
0.00930 U
0.0100 U
0.0598 J
0.108
0.0141 J
0.266
0.213
0.0313 J
Benzo(a) anthracene
mq/l
0.0190 U
0.0190 U
0.00300 U
0.00846 J
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.00300 U
Benzo(a)pyrene
mq/l
0.0370 U
0.0370 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
Benzo(b)fluoranthene
M9/L
0.0230 U
0.0230 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
Benzo(g, h,i) perylene
M9/L
0.0190 U
0.0190 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
Benzo(k)fluoranthene
M9/L
0.0320 U
0.0320 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
Chrysene
M9/L
0.0200 U
0.0200 U
0.00500 U
0.00754 J
0.00500 U
0.00500 U
0.00500 U
0.00500 U
0.00500 U
Dibenzo(a,h) anthracene
M9/L
0.0330 U
0.0330 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Fluoranthene
M9/L
0.0320 U
0.0320 U
0.0100 U
0.0100 U
0.0602 J
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Fluorene
M9/L
0.341
2.32
0.243
0.951
1.05
2.10
0.0100 u
0.0100 u
2.05
lndeno(1,2,3-cd) pyrene
M9/L
0.0380 U
0.0380 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
2-Methylnaphthalene
M9/L
0.120 U
0.120 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
Naphthalene
M9/L
0.100 U
0.100 U
0.187 J
0.0540 J
0.0681 J
0.0540 U
0.0540 U
0.0540 U
0.0540 U
Phenanthrene
M9/L
0.0150 U
0.0150 U
0.200
0.0962 J
0.186
0.00700 U
0.116
0.131
0.00700 U
Pyrene
M9/L
0.0360 U
0.0736
0.291
0.156
0.195
0.0190 U
0.763
0.641
0.0529 J
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.013 U
0.010 U
0.010 U
Ethane
mg/L
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.010 U
0.013 U
0.010 U
0.010 U
Methane
mg/L
0.096
0.042
0.024
0.048
0.101
0.054
0.063
0.026
0.074
Alkalinity
mg/L
356
292
348
365
307
320
344
373
342
Nitrogen, Ammonia
mg/L
1.41
1.27
1.54
1.46
1.36
1.22
1.56
1.70
1.17
Nitrogen, Total Kjeldahl
mg/L
1.76
1.43
1.89
1.72
1.58
1.86
1.66
2.30
1.79
Orthophosphate
mg/L
0.59
0.73
0.72
0.37
0.30 U
0.30 U
0.9
0.89
0.61
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
3.99
23.2
4.40
4.43
2.97
2.93
4.67
5.35
3.39
Chloride
mg/L
23.2
37.4
24.9
22.2
31.1
31.6
24.6
18.6
21.3
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
0.5
0.5 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.5 U
0.5 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
727
176
885
667
263
159
1,190
1,130
621
Iron, Dissolved
mg/L
9.23
4.74
3.21
7.03
5.28
4.60
3.29
2.36
7.03
Page 37 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW37-GW-030
MW37-GW-031
MW37-GW-032
MW37-GW-033
MW37-GW-034
MW37-GW-035
MW37-GW-036
MW37-GW-037
MW37-GW-038
Date:
Sep-08
Sep-09
Sep-10
Sep-11
Sep-12
Sep-13
Sep-14
Sep-15
Sep-16
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
Mg/L
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U C9
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
Mg/L
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U C9
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
Mg/L
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
Mg/L
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U C9
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
Mg/L
3.23
3.01
2.37
2.81
0.0220 U
0.742 B
0.484
0.640
0.737
Acenaphthylene
Mg/L
0.0850 U
0.0870 U
0.0870 U
0.558
0.0870 U
0.173
0.117
0.0434 J
0.0700 J
Anthracene
Mg/L
0.0441 J
0.0133 J
0.0100 U
0.0100 U
0.0100 U
0.0323 J, B
0.0227 J
0.0185 U
0.0147 U
Benzo (a) anthracene
Mg/L
0.00300 U
0.00500 U
0.00500 U
0.0200 U
0.0200 U
0.0338 J, B
0.0327 J,B
0.0176 U
0.0140 U
Benzo(a) pyrene
Mg/L
0.0320 U
0.00800 U
0.00800 U
0.00800 U
0.00800 U
0.01 70 U
0.0176 U
0.0176 U
0.0140 U
Benzo (b)fluoranthene
Mg/L
0.0130 U
0.0280 U
0.0280 U
0.0280 U
0.0280 U
0.0179 U
0.0185 U
0.0185 U
0.0147 U
Benzo (g ,h,i) perylene
Mg/L
0.00900 U
0.00800 U
0.00800 U
0.00800 U
0.00800 U
0.01 16 U
0.0120 U
0.0120 U
0.00956 U
Benzo (k) f luora nthene
Mg/L
0.0150 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.0134 U
0.0139 U
0.0139 U
0.01 10 U
Chrysene
Mg/L
0.00500 U
0.00800 U
0.00800 U
0.00800 U
0.00800 U
0.0143 U
0.0148 U
0.0148 U
0.01 18 U
Dibenzo(a,h) anthracene
Mg/L
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.01 16 U
0.0120 U
0.0120 U
0.00956 U
Fluoranthene
Mg/L
0.0100 U
0.0100 u
0.0100 u
0.0100 u
0.0100 u
0.0445 J, B
0.0148 J
0.0148 U
0.0132 J
Fluorene
Mg/L
1.05
0.871
0.615
0.396
0.0160 U
0.0205 U
0.0213 U
0.0213 U
0.0169 U
lndeno(l ,2,3-cd) pyrene
Mg/L
0.00700 U
0.00600 U
0.00600 U
0.00600 U
0.00600 U
0.0152 U
0.0157 U
0.0157 U
0.0125 U
2-Methylnaphthalene
Mg/L
0.0520 U
0.0697 J
0.0250 U
0.100 U
0.100 U
0.0330 U
0.0343 U
0.0343 U
0.0272 U
Naphthalene
Mg/L
0.0540 U
0.0672 J
0.0460 U
0.0840 J, B, LI
0.0460 U
0.0462 J, B
0.0352 U
0.0400 J
0.0388 J
Phenanthrene
Mg/L
0.0605 J
0.00500 U
0.00500 U
0.189
0.00500 U
0.0296 J, B
0.0241 U
0.0241 U
0.0191 U
Pyrene
Mg/L
0.240
0.0848 J
0.0835 J
0.285
0.119
0.166 B
0.0633 J
0.0406 J
0.0416 J
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.008 U
0.010 U
0.010 U
NS
NS
NS
NS
Ethane
mg/L
0.010 U
0.010 U
0.008 U
0.010 U
0.010 U
NS
NS
NS
NS
Methane
mg/L
0.047
0.044
0.038
0.027
0.078
NS
NS
NS
NS
Alkalinity
mg/L
343
434
505
477
570
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
1.43
1.50
1.60
1.72
1.43
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
1.82
1.09
2.49
1.88
1.15
NS
NS
NS
NS
Orthophosphate
mg/L
0.48
0.10 U
0.22
0.22
0.47
NS
NS
NS
NS
Sulfide, Total
mg/L
0.10 U
0.10 U
0.10 U
0.10 U
0.10 U
NS
NS
NS
NS
Total Organic Carbon
mg/L
4.91
4.34
5.05
3.68
3.50
NS
NS
NS
NS
Chloride
mg/L
17.3
21.1
27.8
72.2
88.5
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.2
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
NS
NS
NS
NS
Sulfate
mg/L
1,120
1,030
868
788
527
NS
NS
NS
NS
Iron, Dissolved
mg/L
8.49
11.7
10.7
12.3
15.9
NS
NS
NS
NS
Page 38 of 39
-------
TABLE 3-3
GROUNDWATER ANALYTICAL RESULT SUMMARY
WATER TABLE AQUIFER
Sample ID:
MW37-GW-03?
MW37-GW-040
MW37-GW-041
MW37-GW-042
MW37-GW-043
Date:
Sep-17
Nov-18
Oct-19
Sep-20
Sep-21
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
Benzene
mq/l
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
mq/l
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.358
0.531
0.488
0.174
0.293
Acenaphthylene
mq/l
0.0785 J
0.0712 J
0.0422 U
0.0429 U
0.0622 J
Anthracene
mq/l
0.0296 U
0.0479 J
0.0291 U
0.0296 U
0.0340 U
Benzo(a) anthracene
mq/l
0.0122 U
0.120 J
0.0412 U
0.0418 U
0.0309 U
Benzo(a)pyrene
mq/l
0.0143 U
0.257
0.0362 U
0.0367 U
0.0330 U
Benzo(b)fluoranthene
M9/L
0.0276 U
0.270
0.0734 U
0.0745 U
0.0392 U
Benzo(g,h,i)perylene
M9/L
0.0173 U
0.341
0.0482 U
0.0490 U
0.0495 U
Benzo(k)fluoranthene
M9/L
0.0184 U
0.25?
0.0573 U
0.0582 U
0.0412 U
Chrysene
M9/L
0.0122 U
0.124 J
0.0683 U
0.0694 U
0.0464 U
Dibenzo (a, h) anthracene
M9/L
0.0173 U
0.313
0.0563 U
0.0571 U
0.0412 U
Fluoranthene
M9/L
0.0500 U
0.0777 U
0.0633 U
0.0643 U
0.0330 U
Fluorene
M9/L
0.0122 U
0.0268 U
0.0191 U
0.0194 U
0.0309 U
lndeno( 1,2,3-cd) pyrene
M9/L
0.0173 U
0.333
0.0482 U
0.0490 U
0.0495 U
2-Methylnaphthalene
M9/L
0.0159 J
0.0768 U
0.0764 U
0.0776 U
0.0412 U
Naphthalene
M9/L
0.0260 J
0.175 U
0.392
0.398 U
0.206 U
Phenanthrene
M9/L
0.0327 U
0.0830 U
0.0402 U
0.0408 U
0.0412 U
Pyrene
M9/L
0.0614 J
0.154 J
0.0442 U
0.0449 U
0.0778 J
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
Ethane
mg/L
NS
NS
NS
NS
NS
Methane
mg/L
NS
NS
NS
NS
NS
Alkalinity
mg/L
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
Orthophosphate
mg/L
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
Chloride
mg/L
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
Sulfate
mg/L
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
Notes:
J = Analyte detected at a level less than the reporting limit but greater than or equal to the method detection limit
LI = Laboratory control sample and/or laboratory control sample duplicate recovery was outside control limits.
Data in blue indicate reported concentrations exceeding the respective groundwater protection standard.
Suspected carcinogenic polynuclear aromatic hydrocarbon.
B = Analyte was detected in the associated method blank.
HI = Reporting limit elevated due to hydrocarbon interference.
U = Compound not detected at or above the value reported.
Concentrations within this range are estimated.
mg/L = Milligram(s) per liter.
|jg/L = Microgram(s) per liter.
MNA = Monitored natural attenuation.
NA = Not analyzed. _ __ ...
. hi a , , Page 39 of 39
NS = Not sampled.
-------
TABLE 3-4
GROUNDWATER ANALYTICAL RESULT SUMMARY
INTERMEDIATE ZONE
Sample ID:
Date:
Dam Position:
MW08-GW-004
Aug-95
Dam Down
MW08-GW-005
Dec-96
Dam Down
MW08-GW-006
May-97
Dam Up
MW08-GW-007
Nov-97
Dam Down
MW08-GW-008
May-98
Dam Down
MW08-GW-NA1
Jul-99
Dam Down
MW08-GW-009
Nov-01
Dam Down
MW08-GW-010
Mar-03
Dam Down
MW08-GW-011
Jun-03
Dam Down
MW08-GW-012
Sep-03
Dam Up
Como/iance Parameters
Units
Lead
mg/L
0.0050 U
0.0050 U
0.0074
0.0040 U
0.0040 U
NA
0.0040 U
0.0040 U
0.0040 U
0.0015 U
Benzene
mq/l
101
90.7
148
135
123
263
123
0.5 U
0.5 U
0.29
Ethylbenzene
mq/l
1.0 u
1.0 u
1.0 U
1.0 U
1.0 U
2.4
1.0 U
1.0 U
1.0 U
0.43 U
Toluene
mq/l
1.0 u
1.0 u
1.0 u
1.0 u
1.0 u
2
1.0 u
1.0 U
1.0 U
0.25 U
Xylenes
mq/l
1.0 u
3.0 U
3.0 U
3.0 U
3.0 U
1.2
3.0 U
3.0 U
3.0 U
0.38 U
Acenaphthene
mq/l
18 U
0.50 U
0.078 U
0.14 U
0.14 U
2. U
0.19 U
0.19 U
0.19 U
0.185
Acenaphthylene
mq/l
10 U
1.6 U
0.084 U
0.14 U
0.14 U
2. U
0.19 U
0.19 U
0.19 U
0.055 U
Anthracene
mq/l
6.6 U
0.030 U
0.060 U
0.056 U
0.056 U
0.5 U
0.10 U
0.19 U
0.19 U
0.024 U
Benzo(a)anthracene
mq/l
0.13 U
0.055 U
0.034 U
0.056 U
0.056 U
0.1 U
0.10 U
0.13 U
0.13 U
0.028 U
Benzo(a)pyrene
mq/l
0.23 U
0.10 U
0.088 U
0.056 U
0.056 U
0.1 U
0.10 U
0.19 U
0.19 U
0.050 U
Benzo(b)fluoranthene
M9/l
0.18 U
0.15 U
0.015 U
0.056 U
0.056 U
0.1 U
0.10 U
0.10 U
0.10 U
0.035 U
Benzo (g,h,i) perylene
mq/l
0.76 U
0.18 U
0.065 U
0.056 U
0.056 U
0.1 U
0.10 u
0.10 U
0.10 U
0.035 U
Benzo(k)fluoranthene
mq/l
0.17 U
0.12 U
0.025 U
0.056 U
0.056 U
0.1 U
0.10 u
0.10 u
0.10 u
0.038 U
Chrysene
mq/l
1.5 U
0.060 U
0.023 U
0.056 U
0.056 U
0.1 U
0.10 u
0.10 u
0.10 u
0.032 U
Dibenzo(a,h)anthracene
mq/l
0.3 U
0.13 U
0.021 U
0.056 U
0.056 U
0.1 U
0.10 u
0.10 u
0.10 u
0.039 U
Fluoranthene
mq/l
2.1 U
0.10 U
0.052 U
0.056 U
0.056 U
0.2 U
0.10 u
0.19 U
0.19 U
0.049 U
Fluorene
mq/l
2.1 U
0.082 U
0.12 U
0.11 U
0.11 U
0.5 U
0.19 U
0.19 U
0.19 U
0.042 U
lndeno(l ,2,3-cd)pyrene
mq/l
0.43 U
0.13 U
0.054 U
0.056 U
0.056 U
0.1 U
0.10 u
0.10 U
0.10 U
0.034 U
2-Methylnaphthalene
mq/l
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
Naphthalene
mq/l
10 U
0.38 U
0.038 U
0.068
0.056 U
2. U
0.10 U
0.10 U
0.10 U
0.067
Phenanthrene
mq/l
6.4 U
0.060 U
0.058 U
0.056 U
0.056 U
0.5 U
0.2
0.10 U
0.10 U
0.035 U
Pyrene
mq/l
2.7 U
0.18
0.11 U
0.14 U
0.14 U
0.2 U
0.19 U
0.19 U
0.19 U
0.099 U
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NA
NA
0.007 U
0.010 U
0.013 U
0.01 U
Ethane
mg/L
NS
NS
NS
NS
NA
NA
0.007 U
0.010 U
0.013 U
0.01 U
Methane
mg/L
NS
NS
NS
NS
0.18
0.0987
0.165
0.132
0.221
0.339
Alkalinity
mg/L
NS
NS
NS
NS
285
290
93
339
269
263
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
1 U
0.23
1.0 U
1.0 U
0.31
0.26
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
10 U
1.02
10 U
10 U
0.63
0.32
Orthophosphate
mg/L
NS
NS
NS
NS
0.1 U
0.3 U
0.30 U
0.30 U
0.47
0.31
Sulfide, Total
mg/L
NS
NS
NS
NS
0.14
0.1 U
0.10 U
0.11
0.10 U
0.22
Total Organic Carbon
mg/L
NS
NS
NS
NS
0.8
0.9
1.4
1.4
1
1
Chloride
mg/L
NS
NS
NS
NS
33.7
32
30.2
36.7
35.3
35.3
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
0.1 U
0.1 U
0.1 U
0.1 U
0.1 u
0.1 u
Sulfate
mg/L
NS
NS
NS
NS
43.6
36
409
31.5
30
28.9
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
0.672
0.030 U
0.566
0.645
0.672
Page 1 of 8
-------
TABLE 3-4
GROUNDWATER ANALYTICAL RESULT SUMMARY
INTERMEDIATE ZONE
Sample ID:
MW08-GW-013
MW08-GW-014
MW08-GW-015
MW08-GW-016
MW08-GW-017
MW08-GW-018
MW08-GW-019
MW08-GW-020
MW08-GW-021
MW08-GW-022
Date:
Dec-03
Mar-04
Jun-04
Sep-04
Dec-04
Mar-OS
Jun-05
Sep-05
Dec-05
Mar-06
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Up
Dam Down
Dam Down
Dam Up
Dam Up
Como/iance Parameters
Units
Lead
mg/L
0.0015 U
0.00091 B
0.00050 U
0.00050 U
0.00050 U
0.0016 U
NS
NS
NS
NS
Benzene
mq/l
2.68
0.25 U
0.39
3.71
0.25 U
1.35
2.38
3.01
3.5
0.64
Ethylbenzene
mq/l
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
0.43 U
0.63 U
0.44 U
1.00 u
1.00 U
Toluene
mq/l
0.25 U
1.45
0.25 U
0.25 U
0.25 U
0.25 U
0.09 U
0.09 U
1.00 u
1.00 U
Xylenes
mq/l
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
0.38 U
0.93 U
0.24 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.05
0.073 U
0.076 U
0.077 U
0.077 U
0.13 U
0.13 U
0.13 U
0.130 U
0.130 U
Acenaphthylene
mq/l
0.055 U
0.12 U
0.13 U
0.17
0.13 U
0.17 U
0.17 U
0.17 U
0.170 U
0.1 70 U
Anthracene
mq/l
0.024 U
0.024 U
0.028
0.099
0.025 U
0.0095 U
0.0093 U
0.0095 U
0.00930 U
0.00930 U
Benzo(a)anthracene
mq/l
0.028 U
0.033 U
0.034 U
0.035 U
0.035 U
0.019 U
0.019 U
0.019 U
0.0190 U
0.0190 U
Benzo(a)pyrene
mq/l
0.050 U
0.029 U
0.030 U
0.030 U
0.030 U
0.019 U
0.019 U
0.019 U
0.0370 U
0.0370 U
Benzo(b)fluoranthene
M9/l
0.035 U
0.038 U
0.040 U
0.040 U
0.040 U
0.038 U
0.037 U
0.038 U
0.0230 U
0.0230 U
Benzo (g,h,i) perylene
mq/l
0.035 U
0.036 U
0.038 U
0.038 U
0.038 U
0.033 U
0.032 U
0.033 U
0.0190 U
0.0190 U
Benzo(k)fluoranthene
mq/l
0.038 U
0.14 U
0.15 U
0.15 U
0.15 U
0.023 U
0.023 U
0.023 U
0.0320 U
0.0320 U
Chrysene
mq/l
0.032 U
0.030 U
0.031 U
0.032 U
0.032 U
0.020 U
0.020 U
0.020 U
0.0200 U
0.0200 U
Dibenzo(a,h)anthracene
mq/l
0.039 U
0.025 U
0.026 U
0.026 U
0.026 U
0.034 U
0.033 U
0.034 U
0.0330 U
0.0330 U
Fluoranthene
mq/l
0.049 U
0.067 U
0.070 U
0.070 U
0.070 U
0.033 U
0.032 U
0.033 U
0.0320 U
0.0320 U
Fluorene
mq/l
0.042 U
0.026 U
0.027 U
0.027 U
0.027 U
0.030 U
0.029 U
0.030 U
0.0290 U
0.0290 U
lndeno(l ,2,3-cd)pyrene
mq/l
0.034 U
0.038 U
0.040 U
0.040 U
0.040 U
0.039 U
0.038 U
0.039 U
0.0380 U
0.0380 U
2-Methylnaphthalene
mq/l
NA
NA
NA
NA
NA
NA
NA
NA
0.120 U
0.120 U
Naphthalene
mq/l
0.054 U
0.042 U
0.044 U
0.268
0.044 U
0.10 U
0.10 U
0.10 U
0.100 U
0.113
Phenanthrene
mq/l
0.035 U
0.018 U
0.12
0.277
0.019 U
0.015 U
0.015 U
0.015 U
0.275
0.0150 U
Pyrene
mq/l
0.099 U
0.11 U
0.11 U
0.12 U
0.12 U
0.037 U
0.036 U
0.037 U
0.0360 U
0.0360 U
MNA Parameters
Ethylene
mg/L
0.010 U
0.014 U
0.010 U
0.010 U
0.010 U
0.010 U
0.005 U
0.010 U
0.010 U
0.010 U
Ethane
mg/L
0.010 U
0.014 U
0.010 U
0.010 U
0.010 U
0.010 U
0.005 U
0.010 U
0.010 U
0.010 U
Methane
mg/L
0.258
0.25
0.324
0.589
0.206
0.343
0.342
0.528
0.526
0.406
Alkalinity
mg/L
264
257
272
235
252
NA
283
288
287
266
Nitrogen, Ammonia
mg/L
0.10 U
0.10 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
Nitrogen, Total Kjeldahl
mg/L
0.44
0.4
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
0.60 U
Orthophosphate
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.32
0.30 U
0.30 U
0.30 U
0.30 U
Sulfide, Total
mg/L
0.16
0.15
0.12
0.10 U
0.4
0.2
0.17
0.23
0.2
0.25
Total Organic Carbon
mg/L
0.9
0.8
1.4
1.2
1
1
0.9
1.09
0.97
3.34
Chloride
mg/L
33.3
31.9
31.5
29.4
31
34.7
37.7
33.2
33
37.6
Nitrogen, Nitrate
mg/L
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
0.1 u
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 u
0.1 U
Sulfate
mg/L
41.8
32.4
28.9
17.7
24.7
33.4
31.8
28.5
27.8
23.7
Iron, Dissolved
mg/L
0.695
0.697
0.612
0.918
0.552
0.617
0.694
0.903
0.79
0.719
Page 2 of 8
-------
TABLE 3-4
GROUNDWATER ANALYTICAL RESULT SUMMARY
INTERMEDIATE ZONE
Sample ID:
Date:
Dam Position:
MW08-GW-023
Jun-06
Dam Down
MW08-GW-024
Sep-06
Dam Down
MW08-GW-025
Dec-06
Dam Up
MW08-GW-026
Mar-07
Dam Up
MW08-GW-027
Jun-07
Dam Down
MW08-GW-028
Sep-07
Dam Down
MW08-GW-029
Nov-07
Dam Up
MW08-GW-030
Sep-08
Dam Down
MW08-GW-031
Sep-09
Dam Down
MW08-GW-032
Sep-10
Dam Down
Como/iance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
5.72
4.72
3.52
1.27
5.35
1.37
22.8
8.35
11.6
14.9
Ethylbenzene
mq/l
1.00 u
1.00 U
1.00 U
1.00 U
1.00 u
1.00 U
1.00 u
1.00 u
1.00 u
1.00 u
Toluene
mq/l
1.00 u
1.00 U
1.00 U
1.00 U
1.00 u
1.00 U
1.00 u
1.00 u
1.00 u
1.00 u
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
0.0590 J
0.0517 J
0.0490 U
0.0490 U
0.0490 U
0.0490 U
0.0490 U
0.0490 U
0.0592 J
0.0311 J
Acenaphthylene
mq/l
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0850 U
0.0870 U
0.0870 U
Anthracene
mq/l
0.0100 U
0.0100 U
0.0666 J
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Benzo(a)anthracene
mq/l
0.00300 U
0.00300 U
0.0264 J
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.00300 U
0.00500 U
0.00500 U
Benzo(a)pyrene
mq/l
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.0320 U
0.00800 U
0.00800 U
Benzo(b)fluoranthene
M9/l
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0130 U
0.0280 U
0.0280 U
Benzo (g,h,i) perylene
mq/l
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00900 U
0.00800 U
0.00800 U
Benzo(k)fluoranthene
mq/l
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.0150 U
0.00700 U
0.00700 U
Chrysene
mq/l
0.00500 U
0.00500 U
0.0124 J
0.00500 U
0.00500 U
0.00500 U
0.00500 U
0.00500 U
0.00800 U
0.00800 U
Dibenzo(a,h)anthracene
mq/l
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
0.0100 U
Fluoranthene
mq/l
0.0100 U
0.0100 U
0.0921 J
0.0100 U
0.0100 u
0.0100 U
0.0100 u
0.0100 u
0.0100 u
0.0100 u
Fluorene
mq/l
0.0202 J
0.0100 u
0.123
0.0100 u
0.0100 u
0.0100 u
0.0100 u
0.0100 u
0.0160 U
0.0160 U
lndeno(l ,2,3-cd)pyrene
mq/l
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00700 U
0.00600 U
0.00600 U
2-Methylnaphthalene
mq/l
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0520 U
0.0677 J
0.0250 U
Naphthalene
mq/l
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0540 U
0.0624 J
0.0460 U
Phenanthrene
mq/l
0.0251 J
0.00700 U
0.28
0.00700 U
0.0342 J
0.00700 U
0.00700 U
0.00700 U
0.00583 J
0.00500 U
Pyrene
mq/l
0.0190 U
0.0190 U
0.428
0.0190 U
0.0278 J
0.0190 U
0.0190 U
0.0190 U
0.0170 U
0.0170 U
MNA Parameters
Ethylene
mg/L
0.010 U
0.010 U
0.007 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
0.007 U
Ethane
mg/L
0.010 U
0.010 U
0.007 U
0.010 U
0.008 U
0.010 U
0.010 U
0.010 U
0.010 U
0.007 U
Methane
mg/L
0.587
0.607
0.463
0.436
0.543
0.606
0.778
0.833
0.962
0.943
Alkalinity
mg/L
296
294
287
295
298
295
304
286
273
265
Nitrogen, Ammonia
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.30 U
0.33
0.30 U
Nitrogen, Total Kjeldahl
mg/L
0.60 U
0.60 U
0.82
0.64
0.60 U
0.76
0.72
0.94
0.50 U
0.50 U
Orthophosphate
mg/L
0.30 U
0.30 U
0.30 U
0.30 U
0.10 U
0.10 U
0.10 U
0.15
0.10 U
0.14
Sulfide, Total
mg/L
0.18
0.17
0.13
0.18
0.15
0.18
0.19
0.10 U
0.10 U
0.10 U
Total Organic Carbon
mg/L
0.88
1.00
0.84
0.81
1.33
1.31
1.09
1.63
0.81
0.95
Chloride
mg/L
32.2
33.8
31.8
32.9
36.1
34.0
31.2
32.6
34.5
31.8
Nitrogen, Nitrate
mg/L
0.5 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Nitrogen, Nitrite
mg/L
0.5 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
0.1 U
Sulfate
mg/L
29.4
29.6
22.4
20.1
29.1
24.9
28.4
27.1
35.5
25.9
Iron, Dissolved
mg/L
0.834
0.964
0.908
0.714
0.899
1.01
0.949
0.840
0.797
0.642
Page 3 of 8
-------
TABLE 3-4
GROUNDWATER ANALYTICAL RESULT SUMMARY
INTERMEDIATE ZONE
Sample ID:
Date:
Dam Position:
MW08-GW-033
Sep-11
Dam Down
MW08-GW-034
Sep-12
Dam Down
MW08-GW-035
Sep-13
Dam Down
MW08-GW-036
Sep-14
Dam Down
MW08-GW-037
Sep-15
Dam Down
MW08-GW-038
Sep-16
Dam Down
MW08-GW-039
Sep-17
Dam Down
MW08R-GW-040
Nov-18
Dam Down
MW08R-GW-040A
Dec-18
Dam Down
Comoliance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
24.4
42.2 C?
11.3
3.83
31.4
164
28.0
221
71.2
Ethylbenzene
mq/l
1.00 u
1.00 U C9
1.00 u
1.00 U
1.00 u
1.00 u
1.00 u
35.7
88.2
Toluene
mq/l
1.00 u
1.00 U
1.00 u
1.00 U
1.00 u
1.00 u
1.00 u
1.00 U
11.6
Xylenes
mq/l
3.00 U
3.00 U C9
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
4.09
16.9
Acenaphthene
mq/l
0.0512 J
0.0220 U
0.0624 J, B
0.0926
0.0593 J
0.0402 J
0.0636 J
0.0179 U
77.2
Acenaphthylene
mq/l
0.0870 U
0.0870 U
0.0333 U
0.0333 U
0.0333 U
0.0265 U
0.0101 J
0.0534 J
24.6
Anthracene
mq/l
0.0100 U
0.0100 U
0.0185 U
0.0185 U
0.0185 U
0.0147 U
0.0290 U
0.0259 U
0.533
Benzo(a)anthracene
mq/l
0.0200 J
0.0200 U
0.0335 J, B
0.0318 J,B
0.0176 U
0.0140 U
0.0120 U
0.0696 U
0.0696 U
Benzo(a)pyrene
mq/l
0.00800 U
0.00800 U
0.0176 U
0.0176 U
0.0176 U
0.0140 U
0.0140 U
0.0723 U
0.0723 U
Benzo(b)fluoranthene
M9/L
0.0280 U
0.0280 U
0.0185 U
0.0185 U
0.0185 U
0.0147 U
0.0270 U
0.0946 U
0.0946 U
Benzo(g,h,i) perylene
M9/L
0.00800 U
0.00800 U
0.0123 J, B
0.0920 J,B
0.0120 U
0.00956 U
0.0170 U
0.0795 U
0.0795 U
Benzo(k)fluoranthene
M9/L
0.00700 U
0.00700 U
0.0139 U
0.0139 U
0.0139 U
0.0110 U
0.0180 U
0.0679 U
0.0679 U
Chrysene
M9/L
0.00800 U
0.00800 U
0.0148 U
0.0148 U
0.0148 U
0.0118 U
0.0110 U
0.0723 U
0.0723 U
Dibenzo (a, h) anthracene
M9/L
0.0100 U
0.0100 U
0.0120 U
0.0782 J,B
0.0120 U
0.00956 U
0.0170 U
0.100 U
0.100 U
Fluoranthene
M9/L
0.0100 u
0.0100 u
0.0148 U
0.0148 U
0.0148 U
0.0118 U
0.0496 U
0.0777 U
0.447
Fluorene
M9/L
0.0160 U
0.0160 U
0.0213 U
0.0213 U
0.0213 U
0.0169 U
0.0120 U
0.0685 J
16.3
lndeno(l,2,3-cd)pyrene
M9/L
0.00600 U
0.00600 U
0.0157 U
0.0659 J,B
0.0157 U
0.0125 U
0.0170 U
0.113 U
0.113 U
2-Methylnaphthalene
M9/L
0.100 U
0.100 U
0.0343 U
0.0343 U
0.0343 U
0.0272 U
0.0100 U
0.0768 U
0.548
Naphthalene
M9/L
0.0698 J, B, LI
0.0560 J
0.0406 J, B
0.0352 U
0.0352 U
0.234 J
0.0984 J
0.175 U
13.0
Phenanthrene
M9/L
0.00500 U
0.00500 U
0.0241 U
0.0244 J
0.0255 J
0.0191 U
0.0320 U
0.0830 U
0.0830 U
Pyrene
M9/L
0.0170 U
0.0170 U
0.0133 J, B
0.0130 U
0.0130 U
0.0103 U
0.0550 U
0.0589 U
0.454
MNA Parameters
Ethylene
mg/L
0.008 U
0.010 U
NS
NS
NS
NS
NS
NS
NS
Ethane
mg/L
0.008 U
0.010 U
NS
NS
NS
NS
NS
NS
NS
Methane
mg/L
0.967
1.74
NS
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
302
344
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
0.38
0.35
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
0.50 U
0.50 U
NS
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
0.10 U
0.10 U
NS
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
0.10 U
0.10 U
NS
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
0.80
0.96
NS
NS
NS
NS
NS
NS
NS
Chloride
mg/L
27.7
33.0
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
0.1 U
0.1
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
0.1 U
0.1 U
NS
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
28.5
23.2
NS
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
0.729
0.737
NS
NS
NS
NS
NS
NS
NS
Page 4 of 8
-------
TABLE 3-4
GROUNDWATER ANALYTICAL RESULT SUMMARY
INTERMEDIATE ZON E
Sample ID:
MW08R-GW-041
MW08R-GW-042
MW08R-GW-043
MW10-GW-040
MW10-GW-040A
MW10-GW-041
MW10-GW-042
MW10-GW-043
Date:
Oct-19
Sep-20
Sep-21
Nov-18
Dec-18
Oct-19
Sep-20
Sep-21
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
ComoHance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
55.0
73.6
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
0.500 U
Ethylbenzene
mq/l
56.1
63.3
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
mq/l
2.99
2.33
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
10.8
6.11
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
5.31
60.7
61.7
0.0179 U
0.0190 J
0.0232 U
0.0242 U
0.0371 J
Acenaphthylene
mq/l
2.51
15.9
14.5
0.0357 U
0.0357 U
0.0424 U
0.0442 U
0.0289 U
Anthracene
mq/l
0.0380 J
1.12
0.475
0.0259 U
0.0259 U
0.0293 U
0.0305 U
0.0340 U
Benzo(a) anthracene
mq/l
0.0418 U
0.0432 U
0.0744 J
0.0696 U
0.0696 U
0.0414 U
0.0432 U
0.0309 U
Benzo(a)pyrene
mq/l
0.0367 U
0.0379 U
0.0775 J
0.0723 U
0.0723 U
0.0364 U
0.0379 U
0.0330 U
Benzo(b)fluoranthene
mq/l
0.0745 U
0.0768 U
0.0548 J
0.0946 U
0.0946 U
0.0737 U
0.0768 U
0.0392 U
Benzo(g,h,i)perylene
mq/l
0.0490 U
0.0505 U
0.0505 U
0.0795 U
0.0795 U
0.0485 U
0.0505 U
0.0495 U
Benzo(k)fluoranthene
mq/l
0.0582 U
0.0600 U
0.0421 U
0.0679 U
0.0679 U
0.0576 U
0.0600 U
0.0412 U
Chrysene
mq/l
0.0694 U
0.0716 U
0.0474 U
0.0723 U
0.0723 U
0.0687 U
0.0716 U
0.0464 U
Dibenzo(a,h)anthracene
mq/l
0.0571 U
0.0589 U
0.0421 U
0.100 U
0.100 U
0.0566 U
0.0589 U
0.0412 U
Fluoranthene
mq/l
0.0792 J
0.366
0.266
0.0777 U
0.0777 U
0.0636 U
0.0663 U
0.0330 U
Fluorene
mq/l
0.203
7.58
6.62
0.0268 U
0.0268 U
0.0192 U
0.0200 U
0.0309 U
lndeno(l,2,3-cd)pyrene
mq/l
0.0490 U
0.0505 U
0.0505 U
0.113 U
0.133 U
0.0485 U
0.0505 U
0.0495 U
2-Methylnaphthalene
mq/l
0.0776 U
0.0800 U
0.0831 J
0.0768 U
0.0768 U
0.0768 U
0.0800 U
0.0412 U
Naphthalene
mq/l
200
1.10
1.30
0.175 U
0.175 U
0.394 U
0.411 U
0.206 U
Phenanthrene
mq/l
0.0408 U
3.05
0.519
0.0830 U
0.0830 U
0.0404 U
0.0421 U
0.0412 U
Pyrene
mq/l
0.539 J
0.413
0.308
0.0589 U
0.0589 U
0.0444 U
0.0463 U
0.0340 U
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Ethane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Methane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Chloride
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Page 5 of 8
-------
TABLE 3-4
G RO U N DWAT E R AN A LYTICA L RES U LT S UMMA RY
INTERMEDIATE ZONE
Sample ID:
MW40-GW-040
MW40-GW-040A
MW40-GW-041
MW40-GW-042A
MW40-GW-042
MW40-GW-043
MW41-GW-040
MW41-GW-040A
Date:
Nov-18
Dec-18
Oct-19
Jun-20
Sep-20
Sep-21
Nov-18
Dec-18
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Como/iance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
NS
NS
NS
NS
NS
NS
0.500 U
0.500 U
Ethylbenzene
mq/l
NS
NS
NS
NS
NS
NS
1.00 U
1.00 U
Toluene
mq/l
NS
NS
NS
NS
NS
NS
1.00 U
1.00 U
Xylenes
mq/l
NS
NS
NS
NS
NS
NS
3.00 U
3.00 U
Acenaphthene
mq/l
NS
NS
NS
NS
NS
NS
7.90
7.88
Acenaphthylene
mq/l
NS
NS
NS
NS
NS
NS
2.34
2.48
Anthracene
mq/l
NS
NS
NS
NS
NS
NS
0.117 J
0.0923 J
Benzo(a)anthracene
mq/l
NS
NS
NS
NS
NS
NS
0.0696 U
0.0696 U
Benzo(a)pyrene
mq/l
NS
NS
NS
NS
NS
NS
0.0723 U
0.0723 U
Benzo(b)fluoranthene
M9/l
NS
NS
NS
NS
NS
NS
0.0946 U
0.0946 U
Benzo(g,h,i)perylene
mq/l
NS
NS
NS
NS
NS
NS
0.0795 U
0.0795 U
Benzo(k)fluoranthene
mq/l
NS
NS
NS
NS
NS
NS
0.0679 U
0.0679 U
Chrysene
mq/l
NS
NS
NS
NS
NS
NS
0.0723 U
0.0723 U
Dibenzo(a,h)anthracene
mq/l
NS
NS
NS
NS
NS
NS
0.100 U
0.100 U
Fluoranthene
mq/l
NS
NS
NS
NS
NS
NS
0.100 J
0.0777 U
Fluorene
mq/l
NS
NS
NS
NS
NS
NS
0.645
0.595
lndeno(l ,2,3-cd)pyrene
mq/l
NS
NS
NS
NS
NS
NS
0.113 U
0.113 U
2-Methylnaphthalene
mq/l
NS
NS
NS
NS
NS
NS
0.125 J
0.140 J
Naphthalene
mq/l
NS
NS
NS
NS
NS
NS
1.80
256
Phenanthrene
mq/l
NS
NS
NS
NS
NS
NS
0.418
0.387
Pyrene
mq/l
NS
NS
NS
NS
NS
NS
0.162 J
0.108 J
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Ethane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Methane
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Chloride
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
NS
NS
NS
Page 6 of 8
-------
TABLE 3-4
GROUN DWATER ANALYTICAL RESULT SUMMARY
INTERMEDIATE ZONE
Sample ID:
MW41-GW-041
MW41 -GW-042
MW41 -GW-043
MW42-GW-042A
MW42-GW-042
MW42-GW-043
MW43-GW-042A
Date:
Oct-19
Sep-20
Sep-21
Jun-20
Sep-20
Sep-21
Jun-20
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
ComoHance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
NS
Benzene
mq/l
0.500 U
0.500 U
0.500 U
96.6
126
102
16,100
Ethylbenzene
mq/l
1.00 U
1.00 U
1.00 U
909
1100
855
2,840
Toluene
mq/l
1.00 U
1.00 U
1.00 U
82.4
113
101
9,660
Xylenes
mq/l
3.00 U
3.00 U
3.00 U
452
534
508
3,180
Acenaphthene
mq/l
6.85
4.02
4.57
118
164
141
13.8
Acenaphthylene
mq/l
1.91
0.937
1.05
25.7
44.8
30.3
228
Anthracene
mq/l
0.113
0.0305 U
0.0330 U
3.15
4.41
4.13
4.49
Benzo (a) anthracene
mq/l
0.0412 U
0.0432 U
0.0300 U
0.216 U
0.0432 U
0.0575 J
0.427 U
Benzo (a)pyrene
mq/l
0.0362 U
0.0379 U
0.0320 U
0.189 U
0.0379 U
0.0333 U
0.375 U
Benzo (b)fluoranthene
mq/l
0.0734 U
0.0768 U
0.0380 U
0.384 U
0.0768 U
0.0396 U
0.760 U
Benzo (g, h,i) perylene
mq/l
0.0482 U
0.0505 U
0.0484 U
0.253 U
0.0505 U
0.0500 U
0.500 U
Benzo (k)fluoranthene
mq/l
0.0573 U
0.0600 U
0.0400 U
0.300 U
0.0600 U
0.0417 U
0.594 U
Chrysene
mq/l
0.0683 U
0.0716 U
0.0450 U
0.358 U
0.0716 U
0.0469 U
0.708 U
Dibenzo(a,h)anthracene
mq/l
0.0563 U
0.0589 U
0.0400 U
0.295 U
0.0589 U
0.0417 U
0.583 U
Fluoranthene
mq/l
0.0633 U
0.0663 U
0.0320 U
1.14
1.36
1.18
2.23
Fluorene
mq/l
0.289
0.103 J
0.178
45.2
65.1
52.9
34.2
Indeno (1,2,3-cd) pyrene
mq/l
0.0482 U
0.0505 U
0.0480 U
0.253 U
0.0505 U
0.0500 U
0.500 U
2-Methylnaphthalene
mq/l
0.0764 U
0.0800 U
0.0400 U
10.7
7.65
7.52
408
Naphthalene
mq/l
0.392 U
0.411 U
0.313 J
1,050
1,190
1,260
8,550
Phenanthrene
mq/l
0.352
0.0421 U
0.0400 U
42.2
47.4
40.8
28.4
Pyrene
mq/l
0.0977 J
0.0463 U
0.0627 J
1.09
1.25
1.13
2.74
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NS
NS
Ethane
mg/L
NS
NS
NS
NS
NS
NS
NS
Methane
mg/L
NS
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
NS
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
NS
NS
Chloride
mg/L
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
NS
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
NS
NS
Page 7 of 8
-------
TABLE 3-4
GROUNDWATER ANALYTICAL RESULT SUMMARY
INTERMEDIATE ZONE
Sample ID:
MW43-GW-042
MW43-GW-043
MW44-GW-043A
MW44-GW-043B
MW45-GW-043A
MW45-GW-043B
Date:
Sep-20
Sep-21
Nov-21
Dec-21
Nov-21
Dec-21
Dam Position:
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Dam Down
Como/iance Parameters
Units
Lead
mg/L
NS
NS
NS
NS
NS
NS
Benzene
mq/l
14,000
15,400
0.500 U
0.500 U
1.25
0.500 U
Ethylbenzene
mq/l
2,370
1,900
1.00 U
1.00 U
1.74
1.00 U
Toluene
mq/l
8,370
6,960
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
mq/l
2,710
2,220
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
mq/l
16.8
9.49
0.134
0.0667 J
1.00
0.281
Acenaphthylene
mq/l
202
141
0.0286 U
0.0280 U
0.0853 J
0.0286 U
Anthracene
mq/l
4.78
4.59
0.0337 U
0.0330 U
0.0340 U
0.0337 U
Benzo(a)anthracene
mq/l
0.458 J
0.984
0.0306 U
0.0300 U
0.0309 U
0.0306 U
Benzo(a)pyrene
mq/l
0.409 J
0.741
0.0327 U
0.0320 U
0.0330 U
0.0327 U
Benzo(b)fluoranthene
M9/l
0.384 U
0.488
0.0388 U
0.0380 U
0.0392 U
0.0388 U
Benzo(g,h,i)perylene
mq/l
0.253 U
0.344
0.0490 U
0.0480 U
0.0495 U
0.0490 U
Benzo(k)fluoranthene
mq/l
0.300 U
0.225
0.0408 U
0.0400 U
0.0412 U
0.0408 U
Chrysene
mq/l
0.358 U
0.688
0.0459 U
0.0450 U
0.0464 U
0.0459 U
Dibenzo(a,h)anthracene
mq/l
0.295 U
0.0858 J
0.0408 U
0.0400 U
0.0412 U
0.0408 U
Fluoranthene
mq/l
2.49
3.02
0.0327 U
0.0320 U
0.0373 J
0.0327 U
Fluorene
mq/l
33.1
23.1
0.0306 U
0.0300 U
0.0610 J
0.0306 U
lndeno(l ,2,3-cd)pyrene
mq/l
0.253 U
0.249
0.0490 U
0.0480 U
0.0495 U
0.0490 U
2-Methylnaphthalene
mq/l
380
288
0.0408 U
0.0400 U
0.0412 U
0.0408 U
Naphthalene
mq/l
6470
3,070
0.204 U
0.200 U
0.206 U
0.204 U
Phenanthrene
mq/l
26.8
22.2
0.0408 U
0.0400 U
0.0816 J
0.0408 U
Pyrene
mq/l
3.35
3.95
0.0337 U
0.0330 U
0.0340 U
0.0337 U
MNA Parameters
Ethylene
mg/L
NS
NS
NS
NS
NS
NS
Ethane
mg/L
NS
NS
NS
NS
NS
NS
Methane
mg/L
NS
NS
NS
NS
NS
NS
Alkalinity
mg/L
NS
NS
NS
NS
NS
NS
Nitrogen, Ammonia
mg/L
NS
NS
NS
NS
NS
NS
Nitrogen, Total Kjeldahl
mg/L
NS
NS
NS
NS
NS
NS
Orthophosphate
mg/L
NS
NS
NS
NS
NS
NS
Sulfide, Total
mg/L
NS
NS
NS
NS
NS
NS
Total Organic Carbon
mg/L
NS
NS
NS
NS
NS
NS
Chloride
mg/L
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrate
mg/L
NS
NS
NS
NS
NS
NS
Nitrogen, Nitrite
mg/L
NS
NS
NS
NS
NS
NS
Sulfate
mg/L
NS
NS
NS
NS
NS
NS
Iron, Dissolved
mg/L
NS
NS
NS
NS
NS
NS
Notes:
Data in blue indicate reported concentrations exceeding the respective cleanup goal. U = Compound not detected at or above the value reported.
B = Analyte was detected in the associated method blank. Suspected carcinogenic polynuclear aromatic hydrocarbon.
C9 = Calibration Verification recovery was outside the method control limits for this analyte. mg/L = Milligram(s) per liter.
The LCS for this analyte met CCV acceptance criteria, and was used to validate the batch. [jg/L = Microgram(s) per liter.
J = Analyte detected at a level less than the reporting limit but greater than or equal to MNA = Monitored natural attenuation.
the method detection limit. Concentrations within this range are estimated. NA = Not analyzed.
LI = Laboratory control sample and/or laboratory control sample duplicate recovery was NS = Not sampled,
outside control limits.
Page 8 of 8
-------
TABLE 3-5
ORC ADVANCED® EVALUATION SAMPLE RESULTS
Sample ID:
MW-2R
Baseline
July 2014
MW-2R
2 Months
September 2014
MW-2R
4 Months
November 2014
MW-2R
8 Months
March 2015
MW-2R
14 Months
MW-2R
26 Months
MW-2R
38 Months
September 2015 September 2016 September 2017
MW-2R
52 Months
November 2018
MW-2R
63 Months
October 201?
MW-2R
74 Months
MW-2R
86 Months
September 2020 September 2021
Field Measurements
Temperature °C 10.9
Specific Conductance mS/cm 1.918
pH andard un 6.71
ORP mV -117
Dissolved Oxygen mg/L 0.39
Turbidity NTU 0.45
14.5
1.673
7.06
-47.6
0.47
2.44
12.4
1.669
7.12
-220
0.63
1.20
7.3
1.479
7.12
128
0.33
0.80
15.2
2.493
7.00
110
0.53
1.76
16.1
2.260
7.64
33.9
1.18
3.24
13.7
2.086
7.42
-54.3
1.77
1.86
13.1
1.313
7.49
-33.6
1.26
1.82
14.2
1.607
6.62
-165
2.72
1.63
15.2
1.361
7.44
-38.2
0.62
1.89
16.9
1.359
7.39
-56.2
0.15
0.84
Laboratory Parameters
Benzene
Mg/L
162
10.2
17.7
12.?
1.58
0.500 U
1.18
0.500 U
0.500 U
0.500 U
0.500 U
Ethyl benzene
Mg/L
55.2
2.48
4.37
5.51
1.00 U
1.00 U
1.7
1.00 U
1.00 U
1.00 U
1.00 U
Toluene
Mg/L
2.32
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
1.00 U
Xylenes
Mg/L
14.2
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
3.00 U
Acenaphthene
Mg/L
16.3
6.20
5.55
3.86
1.87
0.944
5.35
0.324
0.111
1.60
2.90
Acenaphthylene
Mg/L
3.31
1.31
0.967
0.798
0.666
0.435
1.63
0.281
0.0426 U
1.07
1.08
Anthracene
Mg/L
0.602
0.413
0.326
0.205
0.154
0.0423 J
0.0989 J
0.0259 U
0.0294 U
0.0305 U
0.0846 J
Benzo(a)anthraceneb
Mg/L
0.0176 U
0.0585 J,B
0.0212 J
0.0176 U
0.0908 J
0.0140 U
0.0664 J
0.0696 U
0.0416 U
0.0432 U
0.0323 U
Benzo(a)pyreneb
Mg/L
0.0176 U
0.0308 J
0.0140 U
0.0176 U
0.178
0.0140 U
0.150
0.0723 U
0.0365 U
0.0379 U
0.0344 U
Benzo(b)fluorantheneb
Mg/L
0.0185 U
0.0278 J,B
0.0270 U
0.0185 U
0.123
0.0147 U
0.123
0.0946 U
0.0741 U
0.0768 U
0.0409 U
Benzo(g,h,i)perylene
Mg/L
0.0143 J
0.0279 J,B
0.0170 U
0.0120 U
0.123
0.0111 J
0.0954 J
0.0795 U
0.0487 U
0.0505 U
0.0516 U
Benzo(k)fluorantheneb
Mg/L
0.0139 U
0.0139 U
0.0180 U
0.0139 U
0.0510 J
0.0110 U
0.0390 J
0.0679 U
0.0579 U
0.0600 U
0.0430 U
Chryseneb
Mg/L
0.0195 J
0.0200 J,B
0.0180 J
0.0148 U
0.0918 J
0.0118 U
0.0510 J
0.0723 U
0.0690 U
0.0716 U
0.0484 U
Dibenzo(a,h)anthracene
Mg/L
0.0120 U
0.0180 J,B
0.0170 U
0.0120 U
0.0205 J
0.00956 U
0.0190 J
0.100 U
0.0569 U
0.0589 U
0.0430 U
Fluoranthene
Mg/L
0.150
0.309
0.224
0.114
0.221
0.0390 J
0.160
0.0777 U
0.0640 U
0.0663 U
0.181
Fluorene
Mg/L
5.88
1.45
0.429
0.900
0.214
0.175
0.943
0.320
0.0434 J
0.130
0.400
lndeno(l,2,3-cd)pyreneb
Mg/L
0.0157 U
0.0231 J,B
0.0170 U
0.0157 U
0.0797 J
0.0125 U
0.0888 J
0.113 U
0.0487 U
0.0505 U
0.0516 U
2-Methylnaphthalene
Mg/L
0.213 J
0.418 J
0.0194 J
0.0343 U
0.0367 J
0.0351 J
0.0409 J
0.0768 U
0.0772 U
0.0800 U
0.0430 U
Naphthalene
Mg/L
1.29 B
0.128 J
0.307
1.25 B
0.186 J
0.0493 J
0.809
0.175 U
0.396 U
0.411 U
0.247 J
Phenanthrene
Mg/L
1.70
1.28
0.564
0.806
0.292
0.106
0.279
0.0830 U
0.0406 U
0.0421 U
0.0600 J
Pyrene
Mg/L
0.222
0.481
0.414
0.148
0.356
0.0492 J
0.253
0.0589 U
0.0447 U
0.0463 U
0.215
Notes:
Data in blue indicate concentrations exceeding the respective cleanup goal.
a Collected during the annual groundwater monitoring event.
b Suspected carcinogenic polynuclear aromatic hydrocarbon.
oC = Degrees Celcius
mS/cm = MilliSiemens per centimeter.
mg/L = Milligram(s) per liter.
mV = Millivolt (s).
NTU = Nephelometric turbidity units.
ORP = Oxidation-Reduction Potential.
|jg/L = Microgram(s) per liter.
B = Analyte was detected in the associated method blank.
J = Analyte detected at a level less than the reporting limit but greater than or equal to the
method detection limit. Concentrations within this range are estimated.
U = Compound not detected at or above the value reported.
Page 1 of 1
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TABLE 4-1
STATISTICAL TREN D TEST SUMMARY
Mann-Kendall Theil-Sen OLS Regression
Monitoring Constituent Trend Test Trend Test Residuals
Well of Concern Identified Trend Identified Trend Slope Distribution
Benzene
Benzo(a)anthracene
2-Methylnaphthalene
Naphthalene
Insufficient Evidence
Insufficient Evidence
Insufficient Evidence
Not Normal ND during last 3 annual events
Normal ND during last 3 annual events
Not Normal ND during last 3 annual events
Normal ND during 3 of last 4 annual events
MW-8/8R Benzene
Benzo(a)anthracene
Dibenzo (a,h)anthracene
Naphthalene
Increasing Increasing NA Not Normal
Increasing Increasing 0.0038 Normal
Increasing Increasing NA Not Normal
Insufficient Evidence Insufficient Evidence NA Not Normal
Detected during 17 of last 18 annual events. ND in 2021.
ND during 4 of last 16 annual events. Identified trend resulting from increasing MDLs. Plume appears stable.
ND during last 7 annual events. Identified trend resulting from increasing MDLs. Plume appears stable.
Detected during 11 of last 18 annual events
MW-23R/RR
Benzene
Benzo(a)anthracene
Naphthalene
Insufficient Evidence Insufficient Evidence NA Not Normal
Insufficient Evidence Insufficient Evidence 0.0044 Normal
Insufficient Evidence Insufficient Evidence -0 0027 Normal
ND during last 15 annual events
Detected during last 18 annual events
Detected during 12 of last 18 annual events
Notes:
MDL = Method detection limit
NA = Not applicable because the distribution of OLS regression residuals is not normal
ND = Not detected
OLS = Ordinary least squares
1. Statistical trend tests are based on groundwater data from samples collected during annual monitoring events between 2004 and 2020.
2. Confidence level for each statistical test = 0.95.
3. Statistical trend test were conducted using ProUCL software (Version 5.1.002). ProUCL output sheets are provided in Appendices F through H of this 2021 Annual Report.
4. Concentration trend determinations presented in/ta//c font appear to be affected by nondetect results reported at elevated MDLs
Page 1 of 1
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TABLE 4-1
STATISTICAL TREND TEST SUMMARY
Mann-Kendall
Thell-Sen
Monitoring
Constiuent
Ordinary Least Squares
Trend Test
Trend Test
Well
ef Cencem
Regression Slope
Identified Trend
Identilied Trend
MW-2R
Benzene
-12.6451
Decreasing
Insufficient Evidence
Benzo(a)anthracene
Decreasing
Decreasing
2-MethylnaphthaSene
-6.7967
Decreasing
Decreasing
Naphthalene
-52.7512
Insufficient Evidence
Insufficient Evidence
MW-e
Benzene
5.4067
Increasing
Increasing
Benzo(o]anthracene
00018
Increasing
Increasing
Dibenzo(a,h)an1hracene
0.0015
insufficient Evidence
Insufficient Evidence
Naphthalene
-0.002-1
Insufficient Evidence
Insufficient Evidence
MW-13.
Benzene
Nol Detected
Nol Detected
Not Detected
Benzo{o}anthrocene
OjOOOS
Insufficient Evidence
Insufficient Evidence
Benzo(o)pyrene
-0.0003
Dsci'ecssrng
Dfti-rifiCiSingi
Benzo(b]fIuaranthene
-0.0057
Insufficient Evidence
Insufficient Evidence
Benza(k)fiuoranthene
•0JDO27
Insufficient Evidence
Insufficient Evidence
Chrysene
-0.0071
Insufficient Evidence
Insufficient Evidence
Kbenzo(o.h)onthracene
-0.0010
insufficient Evidence
Insufficient Evidence
lndeno(l,2,3-cd)pyfene
-0,0027
Insufficient Evidence
Insufficient Evidence
Naphthalene
o.oi a
Insufficient Evidence
insufficient Evidence
MW-Mk
Benzene
4.2K8
Decreasing
Decreaing
&anzo{a] anthracene
-0.0299
Decreasing
Decreasing
Eenzo(o)pyrene
•0,0195
Decreasing
Decreasing
Benzo(b]fluoranthene
-0.0140
Decreasing
Decreasing
Benza | k) f lucran thene
-0.0069
Insufficient Evidence
Insufficient Evidence
Chrysene
-0.0332
Decreasing
Decreasing
Dib enzo (a.h)anl hracene
•0.0003
Insufficient Evidence
Insufficient Evidence
Naphthalene
-0.5381
Decreasing
Decreasing
MW-23R
Benzene
-0.206-3
Decreeing
Insufficient F vide nee-
Benzol a)anth-racene
•0.D032
Insufficient Evidence
Insufficient Evidence
Naphthalene
-0.0257
Insufficient Evidence
insufficient Evidence-
Notes'.
1. Statistical tiend tests are based an groundwater data from sample} collected d jr'rg September monifer'ng
events between 2004 and 20! 7.
2. Confidence tevel for each statistical test - 0.95,
3. Statistical trend test were conducted using PralJCl software IVerVijn 5 1 no?|.
ProLICL output sheets are provided in Appendices C through G d# this 2017 Annual Report.
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APPENDIX C
Site Inspection Form
L SITE INFORMATION
Site name: Mason City Coal Gasification Plant
Date of inspection: July 6, 2022
Location and Region: Mason City, IA/Region 7
EPA ID: IAD980696190
Agency, office, or company leading the five-year
review: EPA-Region7
Weather/temperature: Mid-80s with clouds
Remedy Includes: (Check all that apply)
~ Landfill cover/containment
~ Access controls
X Institutional controls
~ Groundwater pump and treatment
~ Surface water collection and treatment
~ Other
X Monitored natural attenuation
~ Groundwater containment
~ Vertical barrier walls
II. INTERVIEWS (Check all that apply)
1. O&M site manager Jill Stevens Senior Manager - Strategic Projects 7-6-22
Name Title
Date
Interviewed X at site ~ at office ~ by phone: Phone no.
Problems, suggestions; ~ Report attached: Remedy functioning as expected. No issues or disturbances got
good handle on things related to the site and the public. DNAPL recovery completed. She'd like to see cleanup
completed and the site removed from the NPL.
2. O&M staff Randv Kroneman / Stantec
Name
Project Mgr.
Title
7-6-22
Date
Interviewed X at site ~ at office ~ by phone Phone no.
Problems, suggestions; ~ Report attached None
3. Local regulatory authorities and response agencies (i.e., State and Tribal offices, emergency response
office, police department, office of public health or environmental health, zoning office, recorder of
deeds, or other city and county offices, etc.) Fill in all that apply.
Agency Iowa Department of Natural Resources
Contact Dan Cook
Name
Title
7-6-22
Date
Problems; suggestions; ~ Report attached Well managed, no complaints, and well informed. No issues
to report.
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HI. ACCESS AND INSTITUTIONAL CONTROLS IE Applicable
~ N/A
A.
Fencing
1.
Fencing damased X Location shown on site man X Gates secured
~ N/A
Remarks
B.
Other Access Restrictions
1.
Signs and other security measures ~ Location shown on site map
Remarks
IX] N/A
C.
Institutional Controls (ICs)
1.
Implementation and enforcement
Site conditions imply ICs properly implemented X Yes ~ No
Site conditions imply ICs are being fully enforced X Yes ~ No
Tvpe of monitoring (e.e.. self-reporting, drive b\ ) self-reportine
~ N/A
~ N/A
Frequency Annually
Responsible partv/aeencv Alliant and citv of Mason Citv
Reporting is up-to-date X Yes
Reports are verified by the lead agency X Yes
Specific requirements in deed or decision documents have been met X Yes
Violations have been reported ~ Yes
Other problems or suggestions: ~ Report attached
None
~ No
~ No
~ No
~ No
~ N/A
~ N/A
~ N/A
IX] N/A
2.
Adequacy X ICs are adequate ~ ICs are inadequate
Remarks
~ N/A
D.
General
1.
Vandalism/trespassing ~ Location shown on site map X No vandalism evident
Remarks
2.
Land use changes on site IX] N/A
Remarks
3.
Land use changes off-site ~ N/A
Remarks None noted.
IV. GENERAL SITE CONDITIONS
A.
Roads ~ Applicable X N/A
1.
Roads damaged ~ Location shown on site map ~ Roads adequate
Remarks
~ N/A
B.
Other Site Conditions
Remarks Veeetation on site has become verv larse. This does not dosc a oroblem unless it affects access
to or condition of monitorine wells. Thev are aware of it and mows according to a scheduled sctim bv the
contractor.
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V. GROUNDWATER/SURFACE WATER REMEDIES IE Applicable ~ N/A
A.
DNAPL Extraction Wells, Pumps, and Pipelines IX] Applicable ~ N/A
1.
Pumps, Wellhead Plumbing, and Electrical
X Good condition X All required wells properly operating ~ Needs Maintenance ~ N/A
Remarks
2.
Extraction System Pipelines, Valves, Valve Boxes, and Other Appurtenances
X Good condition ~ Needs Maintenance
Remarks
3.
Spare Parts and Equipment
X Readily available ~ Good condition ~ Requires upgrade ~ Needs to be provided
Remarks
B. Surface Water Collection Structures, Pumps, and Pipelines ~ Applicable IX] N/A
C.
Treatment System ~ Applicable X N/A
D. Monitoring Data
1.
Monitoring Data
X Is routinely submitted on time X Is of acceptable quality
2.
Monitoring data suggests:
X Groundwater plume is effectively contained ~ Contaminant concentrations are declining
E.
Monitored Natural Attenuation
1.
Monitoring Wells (natural attenuation remedy)
X Properly secured/locked X Functioning X Routinely sampled X Good condition
X All required wells located ~ Needs Maintenance ~ N/A
Remarks
VL OVERALL OBSERVATIONS
A.
Implementation of the Remedy
Describe issues and observations relating to whether the remedy is effective and functioning as designed.
Begin with a brief statement of what the remedy is to accomplish (i.e., to contain contaminant plume,
minimize infiltration and gas emission, etc.).
Nothing was observed to indicate that the remedy is not functioning as designed. Recoverable DNAPL
remains dresent in the intermediate zone. The extent of DNAPL and dissolved ohasc impacts exceeding
the groundwater Dcrformancc standards in the intermediate zone has been defined.
B.
Adequacy of O&M
Describe issues and observations related to the implementation and scope of O&M procedures. In
particular, discuss their relationship to the current and long-term protectiveness of the remedy.
O&M an Dears to be sufficient to maintain long-term effectiveness of the remedy. Vegetation on site mav
need to be managed better so that wells remain accessible, and growth does not threaten integrity of
monitoring wells in the future. Contractor is aware of that.
-------
Early Indicators of Potential Remedy Problems
Describe issues and observations such as unexpected changes in the cost or scope of O&M or a high
frequency of unscheduled repairs that suggest that the protectiveness of the remedy may be compromised
in the future.
None
D. Opportunities for Optimization
Describe possible opportunities for optimization in monitoring tasks or the operation of the remedy.
None
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