Response Action Contract
For Remedial Response, Enforcement Oversight, and Non-Time-Critical
Removal Activities at Sites of Release or Threatened Release of
Hazardous Substances in EPA Region VIII
U.S. EPA Contract No. EP-W-05-049
Field Oversight Report
U.S. Moorings Substantial Product Investigation
Gasco Sediments Site, Portland, Oregon
Work Assignment No.: 336-VOEE-lOEW
Gasco/Siltronics
EPA RPM: Sean Sheldrake
CDM Smith Project Manager: Lance Peterson
February 5, 2014
Prepared for:
U.S. Environmental Protection Agency
Region 10
1200 Sixth Avenue, Suite 900
Seattle, Washington 98101
Prepared by:
CDM Federal Programs Corporation
555 17th Street, Suite 1100
Denver, Colorado 80202
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Table of Contents
Acronyms and Abbreviations iii
Section 1 Introduction 1-1
1.1 Project Background 1-1
1.2 Substantial Product Definition 1-3
1.3 Investigation Summary 1-4
1.3.1 NW Natural U.S. Moorings Substantial Product Investigation 1-4
1.3.2 USACE U.S. Moorings Substantial Product Investigation 1-5
Section 2 Objectives and Scope of Field Oversight 2-1
2.1 Governing Documents 2-1
2.2 Objectives of Field Oversight 2-1
2.3 Field Investigation Schedule 2-2
2.4 Oversight Personnel 2-2
2.5 Field Documentation 2-2
2.6 Photographic Documentation 2-2
Section 3 Observations 3-1
3.1 Summary of Work Performed 3-1
3.1.1 NW Natural Sediment Core Collection and Processing 3-1
3.1.2 USACE Sediment Core Processing 3-5
3.1.3 Sediment Core Summary 3-9
3.2 Health and Safety Program 3-10
3.2.1 Health and Safety Meetings 3-10
3.2.2 Use of Personal Protective Equipment 3-11
3.2.3 Slip, Trip, and Fall Hazards 3-11
3.2.4 Weather Hazards 3-11
Section 4 Deviations 4-1
4.1 Summary of Deviations and Field Change Requests 4-1
Section 5 References 5-1
Figures
Figure 1 Anchor QEA - U.S. Moorings Sample Locations
Figure 2 USACE - U.S. Moorings Sample Locations
Appendices
Appendix A Field Notes
Appendix B Field Oversight Photographs
Appendix C Health and Safety Inspection Reports
Appendix D Field Change Requests
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Acronyms and Abbreviations
AOC Administrative Settlement Agreement and Order on Consent for Removal Action
BLRA Baseline Risk Assessment
bml below mudline
BNSF Burlington Northern Santa Fe
CDM Smith CDM Federal Programs Corporation
EE/CA Engineering Evaluation/Cost Estimate
EPA U.S. Environmental Protection Agency
FCR Field Change Request
ft feet
HASP health and safety plan
LOE line of evidence
NAPL non-aqueous phase liquid
PAH polycyclic aromatic hydrocarbon
PCE probable effects concentrations
PID photoionization detector
PPE personal protective equipment
RAO removal action objective
RI Remedial Investigation
RM river mile
RPM Remedial Project Manager
Site Gasco/Siltronic site
SOW Statement of Work
TZW transition zone water
USACE U.S. Army Corps of Engineers
U.S. Moorings U.S. Government Moorings site
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Section 1
Introduction
Under Work Assignment 336-VOEE-lOEW from U.S. Environmental Protection Agency (EPA], under
EPA Region 8, Remedial Action Contract 2 No. EP-W-05-049, CDM Federal Programs Corporation
(CDM Smith] was assigned to conduct oversight of field investigation activities at the U.S. Government
Moorings site (U.S. Moorings] offshore area adjacent to the Gasco/Siltronic site (Site] located in
Portland, Oregon.
CDM Smith provided technical field oversight of activities conducted by NW Natural in the U.S.
Moorings offshore area as described in the Study Design for Sediment Characterization Adjacent to U.S.
Moorings Site Required by EPA - Addendum 1 to the Project Area Identification Report Quality Assurance
Project Plan (Anchor QEA 2013], CDM Smith also observed the processing of sediment cores collected
by the U.S. Army Corps of Engineers (USACE] as part of a geotechnical and environmental
investigation conducted around the U.S. Moorings dock in preparation for dock replacement. The
objective of NW Natural's investigation and the environmental portion of the USACE's investigation
was to identify the presence of substantial product as defined in Appendix A of the Gasco Sediments
Site September 9, 2009 Administrative Settlement Agreement and Order on Consent for Removal
Action (AOC; Docket No. CERCLA 10-2009-0255],
Sediment core sampling was conducted by Anchor QEA, LLC (Anchor QEA] on behalf of NW Natural
from September 28 through September 29, 2013, and November 1, 2013. During this work, CDM
Smith conducted oversight on the boat collecting the sediment cores to monitor health and safety
compliance. CDM Smith also conducted oversight at the onshore processing area located on the Gasco
site to provide an independent verification of the sediment characterization.
Sediment core sampling was conducted by Shannon & Wilson, Inc. (Shannon and Wilson] on behalf of
USACE from September 29, 2013 through November 1, 2013. CDM Smith observed sediment core
processing at the processing area located on the U.S. Moorings site to provide an independent
verification of the sediment characterization.
This report summarizes the field oversight activities, field observations, photo documentation, and
includes a discussion of deviations from the Study Design for Sediment Characterization Adjacent to
U.S. Moorings Site Required by EPA - Addendum 1 to the Project Area Identification Report Quality
Assurance Project Plan.
1.1 Project Background
The Gasco Sediments Site is located on the southwest bank of the lower Willamette River generally
between river miles (RMs] 6 and 7, immediately downstream of the Burlington Northern Santa Fe
(BNSF] railroad bridge. The U.S. Moorings offshore area is located downriver and adjacent to the
Gasco Site. The Gasco and U.S. Moorings sites are located within Portland Harbor, which was
designated a federal Superfund site by EPA in 2000 based on sediment contamination.
The Gasco Sediments Site 2009 AOC Statement of Work (SOW] identifies the process that is to be used
to delineate the Gasco Sediment Sites interim project area. Section 3.6.2 of the SOW identifies nine
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Section 1 • Introduction
risk criteria that are to be used to delineate the interim project area. These nine risk criteria or lines
of evidence (LOEs] include:
1. Substantial Presence of Product
2. Benthic Toxicity Bioassays
3. Benthic Toxicity Models
4. Human Health Shellfish Consumption
5. Human Health Direct Sediment Exposures
6. Sediment Probable Effects Concentrations (PECs]
7. Portland Harbor "Baseline" Polycyclic Aromatic Hydrocarbon (PAH] Levels
8. Groundwater Plume Concentrations (i.e., Transition Zone Water [TZW]]
9. Other Potential LOEs (based on the Portland Harbor Baseline Risk Assessments]
In May 2012, NWNatural submitted a draft Engineering Evaluation/Cost Estimate (EE/CA] (Anchor
QEA 2012] for the Gasco Sediments Cleanup Site to EPA for review. Consistent with the AOC, Removal
Action Objectives (RAOs] presented in the EE/CA include a preference to remove "sediments
containing substantial amounts of product that may serve as potential future source of risk material,
unless it can be shown that the costs of such removal are clearly disproportionate to the degree of risk
reduction to be attained through physical removal as compared to other remedial options for the
same material." Section 2.5.3 of the EE/CA provides a summary of substantial product observations
within the Gasco Sediments Site Area of Interest. The Gasco Sediments Site Area of Interest contains a
portion of the U.S. Moorings offshore area including the U.S. Moorings dock. No substantial product
was identified in the U.S. Moorings offshore area by NW Natural in the draft EE/CA.
The USACE was provided a copy of the draft EE/CA for review. The USACE submitted a letter dated
August 14, 2012, to EPA (USACE 2012] in which USACE presented their own evaluation of substantial
product in the U.S. Moorings offshore area using core data collected during the U.S. Moorings 2008
Remedial Investigation (RI] and 2008/2009 supplemental investigation and challenged the draft
EE/CA conclusions. USACE identified nine core locations they believed met the definition of
substantial product as defined in the Gasco 2009 AOC SOW.
Due to the critical nature of the substantial product LOE in defining the Gasco Sediments Site Project
Area and evaluating removal action alternatives in the EE/CA, EPA directed their contractor, CDM
Smith, to review core logs for sediment cores collected within the U.S. Moorings offshore area to
determine whether substantial product was present consistent with the definition provided in Section
3.6.2.1 of the Gasco 2009 AOC SOW. A total of 24 core logs were reviewed to evaluate the presence of
substantial product in the U.S. Moorings offshore area using the sediment descriptions provided on
the logs.
Based on CDM Smith's review of the logs, three core locations were identified as potentially containing
substantial product based on the sediment descriptions contained within the logs. Two other
locations were identified as potentially containing substantial product based on the depth to which
future maintenance dredging outside the navigation channel is anticipated to occur. The following
CDM..
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Section 1 • Introduction
core locations were identified as potentially containing substantial product as a result of the review of
the U.S. Moorings core logs:
¦ 50-BG
¦ GS-01
¦ SDDA-18
¦ 20-BF
¦ C528
EPA provided the evaluation to NW Natural (EPA 2012] and indicated that NW Natural could either
accept the substantial product findings of the evaluation or re-sample the five identified sediment
locations to verify the presence of substantial product During a January 29, 2013 meeting between
EPA, NW Natural, and Siltronic Corporation, NW Natural indicated they planned to pursue re-
investigation of the five core locations.
1.2 Substantial Product Definition
RAOs presented in Section 3.2 of the Gasco 2009 AOC SOW requires "removal of sediments containing
substantial amounts of product (e.g., solid "tar" and/or NAPL [non-aqueous phase liquid]] that may
serve as potential future source of risk material, unless it can be shown that the costs of such removal
are clearly disproportionate to the degree of risk reduction to be attained through physical removal as
compared to other remedial options for the same material."
The working definition of substantial product is provided in Section 3.6.2.1 of the Gasco 2009 AOC
SOW. Direct text taken from the SOW regarding the definition of substantial product is provided
below for reference:
3.6.2.1 Substantial Presence of Product
Areas with substantial presence of product in sediments is a line of evidence related to potential
mobility of chemicals in the future, and thus related to risks identified in the BLRA [Draft Baseline
Risk Assessment], Visual observations in sediment cores shall be the primary parameter used for this
line of evidence. As noted above, the term "substantial" product is intended to 1) target product that
is related to potential future mobility and 2) indicate a preference for removal as defined by RAO #1.
The definition of substantial product does not include every incidence of product observation at the
site. Based on core observations, the working definition of "substantial presence of product" is those
sediments that meet the following criteria:
1. Bands of product, layers of product, "saturated" sediments, "stained" sediments, and/or
seams of product that are greater than 2 inches thick.
2. Any layer or seam of product, regardless of thickness, that is clearly defined as liquid NAPL
that is also mobile (i.e., "oozes" or "drips" out of the core during core observations).
Modifying factors to this definition are:
3. If top 5 ft of core has no substantial product under Criteria #1, then deeper product should
be judged as "not substantial", even if relatively thick layers of product exist at greater
depths.
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Section 1 • Introduction
4. If there are any seams of mobile liquid NAPL (not solid or semisolid tar) per Criteria #2 then
this is substantial product regardless of depth and the characteristics of overlying sediments.
The following is NOT substantial product:
¦ Any layers of non-mobile product (i.e., bands, layers, saturated sediments, stained sediments)
that are less than 2 inches thick.
¦ Petroleum odors that are not associated with visual evidence of product beyond sheens and
blebs.
¦ Sheens that are not associated with more substantial visuals of product.
¦ Isolated product blebs or spots not associated with more substantial visuals of product.
Criteria #3 shall consider whether the 5 feet of overlying relatively clean material includes any
sediment that would be expected to be removed as part of Army Corps maintenance dredging in the
navigation channel. If so, the 5 ft depth requirement should be judged from the depth to which
maintenance dredging would occur. The edges of the area with "substantial presence of product"
shall be defined by cores which do not contain substantial product.
1.3 Investigation Summary
1.3.1 NW Natural U.S. Moorings Substantial Product Investigation
A Study Design for Sediment Characterization Adjacent to U.S. Moorings Site Required by EPA -
Addendum 1 to the Project Area Identification Report Quality Assurance Project Plan was prepared by
Anchor QEA (2013] on behalf of NW Natural to provide a work plan for the additional investigation in
the U.S. Moorings offshore area. The objective of this investigation was to substantiate the presence of
substantial product at the five core locations identified in EPA's November 2012 evaluation, as well as
collect and archive sediment samples from select intervals for potential future chemical analyses.
CDM Smith personnel were present during the sediment core sampling and processing on behalf of
EPA to provide oversight of health and safety and the technical aspects of the substantial product
investigation.
A total of five sediment cores were collected by Anchor QEA on behalf of NW Natural from the five
EPA-identified sediment core locations. Sediment core sample locations are shown on Figure 1. The
cores were visually inspected for the presence of substantial product, and sediment from select
intervals was archived for potential future chemical analyses. The five sediment cores were
designated:
¦ 50-BG-AQ
¦ GS-01-AQ
¦ SDDA-18-AQ
¦ 20-BF-AQ
¦ C528-AQ
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Section 1 • Introduction
1.3.2 USACE U.S. Moorings Substantial Product Investigation
USACE notified EPA in August 2013 of their intent to conduct a geotechnical and environmental
investigation around the existing U.S. Moorings dock in anticipation of demolishing the existing dock
and constructing a new dock. USACE indicated they planned to collect eight environmental sediment
cores for the express purpose of visually observing the cores for substantial product.
CDM Smith personnel were present on behalf of EPA during the processing of the environmental
sediment cores to observe activities and visually inspect the cores to provide an independent
verification of the presence of substantial product.
A total of eight sediment cores were collected by Shannon & Wilson on behalf of USACE at locations
around the perimeter of the existing dock and footprint of proposed new dock. Sediment core sample
locations are shown on Figure 2. The cores were visually inspected for the presence of substantial
product. The eight sediment cores were designated:
¦ SD-101
¦ SD-102
¦ SD-103
¦ SD-104
¦ SD-106
¦ SD-107
¦ SD-108
¦ SD-109
CDM..
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Section 2
Objectives and Scope of Field Oversight
2.1 Governing Documents
Investigation activities completed by NW Natural at the U.S. Moorings site were conducted in
accordance with the following documents:
¦ Anchor QEA, LLC. 2013. Memorandum from Mr. Ryan Barth and Ms. Joy Dunay to Mr. Sean
Sheldrake, U.S. Environmental Protection Agency, re: Study Design for Sediment
Characterization Adjacent to U.S. Moorings Site Required by EPA - Addendum 1 to the Project
Area Identification Report Quality Assurance Project Plan. July 18, 2013.
¦ Anchor QEA, LLC. 2010. Data Gaps QAPP/FSP (Appendix A to the Project Area Identification
Report), Gasco Sediments Cleanup Action. Prepared for NW Natural. July 2010.
¦ U.S. Environmental Protection Agency. 2013a. Letter from Mr. Sean Sheldrake to Mr. Bob
Wyatt, NW Natural, and Mr. Myron Burr, Siltronic Corporation, re: Review of Study Design for
Sediment Characterization Adjacent to U.S. Moorings Site, Addendum 1 to the Project Area
Identification Report Quality Assurance Project Plan, Gasco Sediments Site. August 15, 2013.
This letter provided EPA's conditional approval of Anchor QEA's July 18, 2013 Study Design
Memorandum for the U.S. Moorings investigation, which included some scope of work
modifications.
¦ U.S. Environmental Protection Agency. 2013b. Letter from Mr. Sean Sheldrake to Mr. Bob
Wyatt, NW Natural, and Mr. Myron Burr, Siltronic Corporation, re: EPA's Response to NW
Natural's Response to EPA's Review of Study Design for Sediment Characterization Adjacent to
U.S. Moorings Site, Addendum 1 to the Project Area Identification Report Quality Assurance
Project Plan, Gasco Sediments Site. September 9, 2013.
This letter provided additional clarification on the conditional approval granted by EPA in EPA'
August 15, 2013 letter for the July 18, 2013 Study Design Memorandum.
Investigation activities completed by USACE at the U.S. Moorings site were conducted in accordance
with the following document:
¦ Shannon & Wilson, Inc. 2013. Sediment Investigation Work Plan, Geotechnical and Sediment
Investigation, U.S. Government Moorings, Portland, Oregon. Prepared for U.S. Army Corps of
Engineers, Seattle District. October 11, 2013.
2.2 Objectives of Field Oversight
The main objectives of the field oversight were to 1] observe NW Natural field activities for
compliance with the governing documents listed in Section 2.1, and 2] provide an independent
verification of the presence of substantial product in sediment cores collected by NW Natural and
USACE. All sediment cores collected from the U.S. Moorings offshore area during NW Natural's and
CDIVI
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Section 2 • Objectives and Scope of Field Oversight
USACE's investigations were visually inspected by a representative from EPA, NW Natural, and
USACE. CDM Smith's presence, as a representative of EPA, provided an independent evaluation from
the assessments made by NW Natural and USACE.
Through daily reporting of field observations made by CDM Smith, the EPA Remedial Project Manager
(RPM) was informed of the detailed status of the substantial product investigation work.
Furthermore, oversight personnel provided the RPM with timely notification of issues that developed
during the course of the investigation work, including possible deviations from the governing
documents. This information was important because it assisted the RPM in making decisions
regarding any necessary changes in the data collection effort.
2.3 Field Investigation Schedule
Sediment core sampling and processing was conducted by Anchor QEA on behalf of NW Natural
from September 28 through September 29, 2013, and on November 1, 2013. Sediment core
sampling and processing was conducted by Shannon & Wilson on behalf of USACE from
September 29, 2013 through November 1, 2013. Both Anchor QEA (NW Natural) and Shannon &
Wilson (USACE) utilized the same sediment coring subcontractor, Marine Sampling Services, for
their respective investigations such that NW Natural's cores were collected first followed by
USACE's cores.
2.4 Oversight Personnel
Oversight was conducted by the following CDM Smith personnel:
¦ Lance Peterson, Project Manager/field team support
¦ Jeanette Mullin, Field Team Lead - sediment core processing
¦ Shawn Oliveira, Health and Safety Lead - sediment core sampling/processing
2.5 Field Documentation
Information and notations were recorded as required in a field logbook in accordance with CDM
Smith Technical Standard Operating Procedure 4-1, Revision 7 Field Logbook Content and
Control. Field documentation consisted of an accounting of activities that occurred during the
U.S. Moorings substantial product investigations, noting any problems or deviations from
governing documents described in Section 2.1.
The field team lead maintained the field logbook and submitted it to the CDM Smith Project
Manager for review, used it for preparing field reports, and filed it in the project files. Field notes
are provided in Appendix A.
2.6 Photographic Documentation
Photographs were taken during field oversight in accordance with CDM Smith Technical Standard
Operating Procedure 4-2, Revision 8 Photographic Documentation of Field Activities. Photo-
documentation by the CDM Smith field oversight team included taking photos of field activities
(especially where visual contamination was noted), field quality assurance/quality control
^mlth 2-2
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Section 2 • Objectives and Scope of Field Oversight
procedures, health and safety compliance procedures, and any other activities determined necessary.
Photographs taken during field oversight are provided by date in Appendix B.
CSrn!th 2-3
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Section 3
Observations
3.1 Summary of Work Performed
On October 24, 2013, before mobilizing to the Gasco Sediments Site, a field-planning meeting was
conducted by the CDM Smith Project Manager and attended by the CDM Smith field staff. During the
meeting, CDM Smith field staff were provided information about the Site, health and safety issues, the
objectives and scope of field activities, governing documents for the field work and required quality
control measures, the roles and responsibilities of staff involved, equipment and training needs,
communication requirements, and schedule. CDM Smith field staff obtained the required field
supplies, including personal protective equipment (PPE], and reviewed health and safety plans
(HASPs] to determine health and safety protocols for performing site work. The daily descriptions
provided below present a general overview of activities performed during the substantial product
investigation fieldwork with a focus on health and safety compliance, compliance with sampling and
processing protocols, notation of field evidence of contamination (sheen, odors, elevated
photoionization detector [PID] readings, discoloration] observed in the sediment cores, and whether
the evidence of contamination met the criteria for substantial product.
3.1.1 NW Natural Sediment Core Collection and Processing
Sediment core collection and processing work initially occurred over a two-day period from
October 28through 29, 2013. However, a sedimentcore could not be collected at the planned GS-01
location by the core collection boat as the river water level was too low. NW Natural's consultant
returned to the GS-01 location on Friday, November 1, 2013, during an extremely low tide when the
location was dry to collect a sediment core using manual methods.
The following field teams were onsite to conduct and/or observe NW Natural's substantial product
investigation in the U.S. Moorings offshore area:
Anchor QEA - Northwest Natural's consultant
Marine Sampling Services - Boat operation and sampling
CDM Smith - Field oversight on behalf of EPA
USACE - Observe core processing
Shannon & Wilson - USACE's consultant/observe core processing
CDM Smith's field team monitored the offshore core collection and onshore core processing conducted
on October 28 through 29, 2013, and on November 1, 2013, to provide oversight of these efforts.
Following is a summary of CDM Smith's observations.
October 28, 2013
In the early afternoon on October 28, 2013, the Anchor QEA sediment processing core crew conducted
a kick-off meeting to discuss the scope of sediment core processing and logging sample collection for
archiving purposes, and health and safety issues - including exclusion zone protocols, potential trip
*ymSth 3-i
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Section 3 • Observations
hazards, and hazards associated with saw cutting to open aluminum core barrels (noise hazard and
flying debris]. In addition to Anchor QEA and CDM Smith staff, the following USACE representatives
were present at the sediment core processing area. A representative of USACE's consultant, Shannon
& Wilson, was also present to observe core processing operations.
Four cores were collected on October 28, 2013 from the U.S. Moorings offshore area: 50-BG-AQ,
SDDA-18-AQ, 20-BF-AQ, and C528-AQ (Figure 1], A sediment core was not able to be collected by the
core collection boat at the GS-01 location due to low water conditions near the shore where the core
location was situated. Anchor QEA notified EPA regarding the GS-01 core location situation.
Cores SDDA-18-AQ and C528-AQ were processed on October 28th at a core processing station set up
adjacent to the Anchor QEA field trailer on the Gasco uplands. Core SDDA-18-AQ was processed
starting at 1:00 pm, and Core C528-AQ was processed starting at 3:00 pm. Anchor archived sediment
from each core from the following intervals: 0-1 feet, 1-4 feet, 4-8 feet, and 8-12 feet. Following are
observations of field evidence of contamination observed within SDDA-18-AQ and C528-AQ and
findings with respect to the presence of substantial product
SDDA-18-AQ No substantial product identified.
Recovery: 89% from 0 to 12.3 feet below mudline (ftbml].
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
3.7 ft bml: Black band, 1-inch thick
4.5-4.7 ftbml: Black band that appeared to be approximately 2-inches thick.
Further investigation revealed the band to be separated into
two bands by a very thin sediment layer. No sheen observed
within band. A slight hydrocarbon odor noted in this interval.
Organics such as wood fragments and roots were present in
the black band.
Anchor QEA collected a sample from the band(s] at 4.5 to 4.7 ft bml to archive for potential future
laboratory analysis.
C528-AQ No substantial product identified.
Recovery: 75% from 0 to 9.3 ftbml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
5.8 ft bml: Black band, 1-inch thick, no sheen observed, slight
hydrocarbon odor
7.8 ft bml: Thin, discontinuous black seam (appears pebbly] less than 1
inch in thickness with no odor
October 29, 2013
At 8:35 am, the sediment core processing crew conducted a health and safety briefing prior to the
start of core processing. USACE representatives were present at the site in addition to Anchor QEA
and CDM Smith staff.
Cores 20-BF-AQ and 50-BG-AQ were processed on October 29th at the core processing station located
on the Gasco uplands. The cores had been collected on October 28th and were kept chilled overnight.
Core 20-BF-AQ was processed starting at 9:00 am, and Core 50-BG-AQ was processed starting at 10:30
CDWI
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Section 3 • Observations
am. Anchor QEA archived sediment from each core from the following intervals: 0-1 feet, 1-4 feet, 4-8
feet, 8-12 feet, and 12 feet to the core end depth. Following are observations of field evidence of
contamination observed within 20-BF-AQ and 50-BG-AQ and findings with respect to the presence of
substantial product.
20-BF-AQ No substantial product identified.
Recovery: 94% from 0 to 13.1 ftbml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
10.12 -10.2 ft bml: Thin black band approximately 1 inch thick, no odor, no sheen
10.89 - 10.95 ft bml: Thin black band less than 1 inch thick, no odor, no sheen
11.7 - 11.8 ftbml: Thin black band approximately 1 inch thick, hydrocarbon
odor, no sheen
The 50-BG-AQ core location is situated on the upriver side of the U.S. Moorings dock adjacent to the
Gasco uplands. This area of the river is not scheduled for maintenance dredging unlike the SDDA-18-
AQ, C528-AQ, and 20-BF-AQ core locations. As a result, the substantial product definition, as it relates
to "bands of product' versus NAPL, indicates any 2-inch thick (or greater] product band observed
within the sediment core must be located within the upper 5 feet to meet the substantial product
definition. Any 2-inch thick product band observed below the upper 5 feet of sediment does not meet
the substantial product definition. Product bands greater than 2-inches thick were observed in the
50-BG-AQ sediment core but all bands were located below the 5-foot threshold. The field evidence of
contamination observed in 50-BG-AQ is noted below.
50-BG-AQ No substantial product identified.
Recovery: 99% from 0 to 13.9 ftbml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
5.7 - 5.95 ft bml: Dark black band approximately 3 inches thick, strong
hydrocarbon odor
7.7 - 7.95 ft bml: Dark black band approximately 3 inches thick, strong
hydrocarbon odor, slight sheen
8.25 - 8.4 ftbml: Wood waste layer containing visible sheen, hydrocarbon odor
8.85 - 9.05 ft bml: Dark black band approximately 2.4 inches thick, hydrocarbon
odor
10.15 - 10.35 ftbml: Dark black band approximately 2.4 inches thick, hydrocarbon
odor, slight sheen
12.9 - 13.05 ft bml: Black band approximately 1 inch thick
13.55 - 13.61 ft bml: Black band less than 1 inch thick
November 1, 2013
On October 31, 2013, Anchor QEA submitted a Field Change Request (FCR] Form to EPA to modify the
collection method for the sediment core planned for the GS-01 location. The river water level had
been too low on October 28, 2013 for the core collection boat to access the GS-01 location as originally
planned. Anchor QEA proposed collecting a sediment core at this location using a hand-driven coring
device during an extremely low tide to occur around 10:30 am to noon on November 1, 2013, in which
it was anticipated the GS-01 location would be dry (i.e., above the water line], EPA approved the FCR.
CDNI
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Section 3 • Observations
The GS-01 location was observed to be dry at around 10:30 am on November 1, 2013. At 10:35 am,
the core collection crew, CDM Smith, and representatives from USACE arrived at the GS-01 location.
The former 2006 GS-01 core location had been marked by Anchor QEA previously for surveying
purposes and the marker was still present (tubing and a water bottle anchored at the former boring
location].
The core collection crew used a hand-driven coring device to attempt to collect a core near the GS-01
location. The target was the upper 2 feet of sediment as the original 2006 GS-01 log indicated "black
staining 0 to 2.0 feet." The core collection crew intended to drive the core tube to a depth of 3 feet and
then extract the tube containing the sediment core. The core collection crew made three separate
attempts to collect a sediment core at the GS-01 location but they experienced difficulties due to large
cobbles in the subsurface that deflected and deformed the polycarbonate core tube and difficulties
associated with removing the tubes from the subsurface without losing the sediment core contained
within as it was pulled up from the subsurface.
During the first coring attempt, the core collection crew removed approximately five inches of cobbles
by hand from the surface of a small area near the GS-01 marker and then drove a 4-foot long
polycarbonate core tube 3.5 ft into the subsurface. Prior to retrieval of the first core, the core
collection crew attempted to collect a second core at a slightly different location. Another 4-foot long
polycarbonate core tube was driven approximately one foot into the subsurface when refusal was
encountered. Approximately 10 inches of sediment was measured within the second core tube.
However, this material was lost during extraction and the end of the tube was damaged by an impact
with a rock in the subsurface.
A third attempt was then made to collect a sediment core. The core collection crew removed some of
the large cobbles (i.e., rip rap] on the surface and removed approximately six inches of reddish course-
grained sand and rocks until the gray sediment beneath was uncovered. The core tube was driven
three feet into the subsurface during the third attempt. Approximately 1.5 feet of material was
measured in the core tube prior to removal. The core collection crew attempted to remove the core
tube by excavating around it using a shovel. A dark gray silty sand was observed in the sidewall of the
excavation. No black staining was observed along the sidewall, which reached a maximum depth of
2.5 ft bml. A slight sheen was observed on the surface of the water within the hole but no odor was
noted. The core collection crew was unable to dig deeper due to sloughing and influx of water. The
sediment contained within the core tube was lost during extraction, and the base of the tube was
deformed by a rock impact and was not able to be re-used for another attempt.
Ultimately, the first core attempt was the only one in which sediment was able to be recovered. The
core collection crew used a shovel to excavate around this core tube in order to remove it from the
subsurface. Close observations were made of the excavation sidewalls around this core tube as it
became clear that excavating to depth may be the only way to observe the upper 2 feet of interest
based on the lack of recovery experienced with the second and third attempt core tubes (note: the
second and third attempt core tubes were removed from the subsurface prior to removal of the core
tube driven in the first attempt].
The excavation around the first attempt core reached a maximum measured depth of 2 feet 7 inches
bml (which includes the 5 inches of cobbles removed prior to advancing the core tube] before the
sidewalls began to slough due to the influx of water. No black staining was observed along the
sidewalls and no odor was noted. A sheen was observed on the surface of the water within the hole.
Some black mottling was observed in some of the sediment removed from the excavation, but these
CDWI
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Section 3 • Observations
were few and sporadic, and no odor was noted from these black pockets. The black coloring appeared
to be related to organics.
The core tube was able to be removed from the subsurface and approximately 1.6 feet of sediment
was recovered from the first attempt core. The core tube was transported to a core processing station
set up adjacent to the Anchor QEA field trailer on the Gasco uplands. Sediment removed from the
excavation around the core tube was placed on aluminum foil and then set into a bucket for transport
to the core processing area for further inspection along with the sediment core.
Observations from the first core and the excavation around the first core were used to make decisions
regarding the presence or lack thereof of substantial product at the GS-01 location. Observations are
summarized below:
GS-01-AQ No substantial product identified.
Sediment Core Recovery: 1.6 feet
Maximum Excavation Sidewall Depth Observed: 2.6 ftbml
Field Evidence of Contamination Observed in Core or Sidewall:
No field evidence of substantial product observed. No black bands or layers
observed. No odors noted in core or excavation. Slight sheen observed on water in
excavation hole.
3.1.2 USACE Sediment Core Processing
Sediment core collection occurred over a two-day period from October 29 through 30, 2013, and
sediment core processing work occurred over a three-day period from October 30, 2013 through
November 1, 2013. The following field teams were onsite to conduct and/or observe USACE's
substantial product investigation in the U.S. Moorings offshore area:
Shannon & Wilson - USACE's consultant
Marine Sampling Services - Boat operation and sampling
EHS Inc. - Shannon & Wilson's subcontractor/provide health and safety air monitoring
CDM Smith - Observe core processing on behalf of EPA
USACE - Observe core processing
Anchor QEA -Observe core processing on behalf of NW Natural
CDM Smith's field team observed the onshore core processing conducted October 30 through
November 1, 2013. USACE provided permission for CDM Smith to photo-document the sediment
cores collected through their investigation during observations. Following is a summary of the CDM
Smith field team's observations.
October 30, 2013
In the early morning on October 30, 2013, a health and safety briefing was presented by the U.S.
Moorings facility Health and Safety Officer to discuss health and safety issues associated with the
overall site. A project-specific health and safety briefing was conducted later adjacent to the core
processing area by Shannon & Wilson. The core processing area was set up in a garage within a
building on the U.S. Moorings upland area.
CDNI
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Section 3 • Observations
USACE informed the other field team representatives that five cores had been collected on Tuesday,
October 29, 2013: SD-101, SD-102, SD-103, SD-106, and SD-109 (SD-109 was collected in lieu of core
SD-105, as this location was inaccessible to the core collection boat due to low water conditions].
Location SD-105 was located near the GS-01 position that Anchor QEAhad been unable to reach on
Monday, October 28, 2013 during their coring collection effort. Core SD-109 is reportedly located
central to the inner dock area of the U.S. Moorings dock. Approximate sediment core sample locations
are shown on Figure 2. USACE collected 14-foot cores at each of these locations.
Cores SD-101, SD-102, and SD-106 were processed on October 30th at the core processing station
located within one of the U.S. Moorings buildings. Core SD-101 was processed starting at 9:40 am,
Core SD-102 was processed starting at 1:05 pm, and Core SD-106 was processed starting at 3:10 pm.
Following are observations of field evidence of contamination observed within SD-101, SD-102, and
SD-106, and findings with respect to the presence of substantial product.
SD-101 No substantial product identified.
Recovery: 80% from 0 to 11.1 ftbml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
9.05 - 9.4 ft blm: Black layer/band approximately 4 inches thick.
Hydrocarbon/creosote-type odor. No sheen visible in core,
no sheen generated during sheen test (i.e., place aliquot of soil
in bowl of water]. Woody debris noted in this layer. Shannon
& Wilson logged the odor as hydrogen sulfide and faint wood
preservative.
Besides the black color and the odor (that field staff did not readily identify as product], no other
evidence of product saturation was identified in the 9.05 to 9.4 ft bml layer in SD-101. The odor in
woody debris present in the shoe of the core (at 11.1 ftbml] was much stronger and creosote-like, and
was similar to the odor in the 9.05 to 9.4-foot interval black layer.
SD-102 No substantial product identified.
Recovery: 90% from 0 to 12.6 ftbml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
2.65 ftbml: Dark black thin band approximately 1/4 inch thick
7.1 - 7.4 ftbml: Black banding that is mottled and not continuous, wood
fragments noted throughout
7.8 - 8 ftbml: Slight dark banding/interbedded thin layers
8.2 -8.8 ftbml: Layers of black mottling with wood fragments
9.2 - 10.25 ft bml: Black mottling with numerous wood fragments, hydrogen
sulfide odor
10.4 - 12.1 ft bml Black mottling with wood fragments, hydrogen
sulfide/creosote odor
The SD-106 core location is situated on the upriver side of the U.S. Moorings dock adjacent to the
Gasco uplands. This area of the river is not scheduled for maintenance dredging. As a result, the
substantial product definition, as it relates to "bands of product' versus NAPL, indicates any 2-inch
thick (or greater] product band observed within the sediment core must be located within the upper 5
CDWI
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Section 3 • Observations
feet to meet the substantial product definition. Any 2-inch thick product band observed below the
upper 5 feet of sediment does not meet the substantial product definition. Product bands greater than
2-inches thick were observed in the SD-106 sediment core but all bands were located below the 5-foot
threshold. The field evidence of contamination observed in SD-106 is noted below.
SD-106 No substantial product identified.
Recovery: 100% from 0 to 14.1 ftbml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
5.0 - 5.2 ft bml: Black band approximately 2.4 inches thick, hydrocarbon odor,
sheen, wood fragments
9.0-9.25 ftbml: Black band approximately 3 inches thick, sheen
13.1-13.35 ft bml: Black band approximately 3 inches thick, slight hydrocarbon
odor
No substantial product was identified by CDM Smith in this core. Upon initial inspection, a dark black
layer approximately 3-inches thick was observed from approximately 4.55 to 4.8 feet bml. CDM
Smith's more detailed inspection of this layer identified a solid band from 4.58 to 4.71 ft bml
(approximately 1.5 inches thick] but outside of these limits there were fine layers of dark brown
sediment separating the "larger" layer into separate bands. The layer from 4.58 to 4.71 ft bml
contained a hydrocarbon odor and sheen but was less than 2 inches thick.
October 31, 2013
In the early morning on October 31, 2013, Shannon & Wilson conducted a project-specific health and
safety briefing adjacent to the core processing area. USACE informed the other field team
representatives thatthree cores had been collected on Wednesday, October 30, 2013: SD-104, SD-
107, and SD-108. USACE collected 14-foot cores at SD-104 and SD-107, and a 20-foot core at SD-108.
Cores SD-103, SD-109, SD-107, and SD-104 were processed on October 31st at the core processing
station located within one of the U.S. Moorings buildings. Core SD-103 was processed starting at 8:15
am, Core SD-109 was processed starting at 9:40 am, Core SD-107 was processed starting at 11:55 am,
and Core SD-104 was processed starting at 2:25 pm. Following are observations of field evidence of
contamination observed within SD-103, SD-109, SD-107, and SD-104, and findings with respect to the
presence of substantial product.
SD-103 No substantial product identified.
Recovery: 98% from 0 to 13.7 ftbml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
13.1 to 13.3 ftbml: Black band approximately 2.4 inches thick, hydrocarbon odor
but no sheen observed, no sheen produced from sheen test.
Layer did not appear to be saturated with product.
SD-109 No substantial product identified.
Recovery: 99% from 0 to 13.9 ftbml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
CDNI
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Section 3 • Observations
8.9 -9.05 ft bml:
Black band approximately 1.9 to 2 inches thick, hydrocarbon
odor, no sheen, broken sheen (tiny specks] produced from a
sheen test
While the layer from 8.9 to 9.05 ft bml appeared saturated/ stained, no sheen was visible in the
sediment layer and the hydrocarbon odor was not very strong. A broken sheen (tiny specks] was
produced with a sheen test No blobs or product were visible. The layer appeared to be exactly 2-
inches and therefore did not meet the "greater than 2 inches thick" substantial product criteria even if
maintenance dredging were to occur in this area such that the layer is within the upper 5 feet of the
new dredge surface.
SD-107
No substantial product identified.
Recovery: 75% from 0 to 10.5 ft bml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
5.4 - 5.44 ft bml:
7.7-7.83 ft bml:
8.32 -8.4 ft bml:
8.6-8.75 ft bml:
9.0-9.1 ft bml:
9.36-9.42 ft bml:
Dark black thin band approximately 0.5 inch thick, slight
hydrocarbon odor, with organic debris
Black band approximately 1.5 inches thick, slight
hydrocarbon odor, no sheen, no sheen produced with sheen
test
Black band approximately 1 inch thick, hydrocarbon odor, no
sheen, not continuous through core, sheen specks observed
during sheen test
Black band approximately 1.8 inches thick, wood material
present, slight creosote-like odor, cobble embedded in this
interval
Black, medium-grained sand layer approximately 1 inch thick
containing wood fragments, visible sheen, creosote and
hydrocarbon-like odors, silt observed on one side of core tube
so layer is not continuous, broken sheen (sheen specks]
produced with sheen test but only on the sand and not the silt
Black layer approximately 0.7 inch thick with sheen
USACE indicated Core SD-107 was re-located from its original planned position because Marine
Sampling Services hit refusal during several attempts to collect the core at the proposed location. The
position was moved approximately 5 feet further offshore (Figure 2],
SD-104
No substantial product identified.
Recovery: 86% from 0 to 11.98 ft bml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
1.25 - 1.28 ft bml: Dark black band approximately 0.4 inch thick, slight
hydrocarbon odor, no sheen, no sheen produced with sheen
test
1.65 - 1.7 ft bml: Dark black band approximately 0.5 inch thick, band thins
through core, slight hydrocarbon odor, no sheen, no sheen
produced with sheen test
CDWI
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Section 3 • Observations
2.13-2.23 ft bml: Dark black band approximately 0.1 inch thick, slight
hydrocarbon odor, no sheen, broken sheen (few specks]
produced with sheen test
November 1, 2013
In the early morning on November 1, 2013, Shannon & Wilson conducted a project-specific health and
safety briefing adjacent to the core processing area. The last core collected by USACE, Core SD-108,
was processed on November 1st at the core processing station located within one of the U.S. Moorings
buildings. Core SD-108 was processed starting at 9:00 am. Following are observations of field
evidence of contamination observed within SD-108 and findings with respect to the presence of
substantial product.
SD-108 No substantial product identified.
Recovery: 72% from 0 to 14.3 ft bml.
Field Evidence of Contamination Observed in Core:
(noted field evidence does not meet definition of substantial product]
2.54 - 2.59 ft bml: Thin black band less than 0.5 inch thick, slight hydrocarbon
odor, no sheen, broken sheen (few specks] produced with
sheen test
3.13 - 3.15 ft bml: Thin black band less than 0.5 inch thick, very faint
hydrocarbon odor, no sheen
6.1 - 6.15 ft bml: Black band approximately 0.5 inch thick, no odor, no sheen,
no sheen produced with sheen test
7.23 - 7.33 ft bml: Black band approximately 1 inch thick, slight hydrocarbon
odor, no sheen, broken sheen (few specks] produced with
sheen test
3.1.3 Sediment Core Summary
Table 3-1 summarizes sample core recovery percentages, recovered lengths, and determination of the
presence of substantial product for all sediment cores collected during NW Natural's and USACE's U.S.
Moorings substantial product investigations.
CDNI
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Section 3 • Observations
Table 3-1. Sediment Core Details
Sediment Core Processing Details
Sediment Core
Collected By
Percent
Recovery
Total Length of
Core to Process
(feet)
Intervals that
Appear to Meet
Substantial Product
Criteria
SDDA-18-AQ
Anchor QEA
89%
12.3
None
C528-AQ
Anchor QEA
75%
9.4
None
20-BF-AQ
Anchor QEA
94%
13.1
None
50-BG-AQ
Anchor QEA
99%
13.9
None
GS-01-AQ
Anchor QEA
53%
1.6
None
SD-101
USACE
80%
11.1
None
SD-102
USACE
90%
12.6
None
SD-106
USACE
100%
14.1
None
SD-103
USACE
98%
13.7
None
SD-109
USACE
99%
13.9
None
SD-107
USACE
75%
10.5
None
SD-104
USACE
86%
11.98
None
SD-108
USACE
72%
14.3
None
3.2 Health and Safety Program
Oversight of health and safety during implementation of the substantial product investigation by NW
Natural in the U.S. Moorings offshore area was carried out by a CDM Smith employee who is a Certified
Industrial Hygienist and Certified Safety Professional. Additional health and safety observations were
made by CDM Smith field staff conducting oversight/observations during NW Natural's and USACE's
investigations. This section provides a summary of health and safety observations.
During comprehensive health and safety assessments conducted by CDM Smith's Health and Safety
Lead on October 28, 2013, field operations for the NW Natural substantial product investigation had
some issues that were identified. After the issues were addressed, the work activities were found to
be in compliance with the requirements as defined in the project HASPs and Federal Occupational
Safety and Health Administration standards (see Appendix C],
3.2.1 Health and Safety Meetings
A detailed health and safety meeting was held at the Gasco site on October 28, 2013, before the start of
NW Natural's investigation fieldwork (sediment core collection and processing]. Anchor QEA held a
second activity-specific health and safety meeting in the early afternoon of October 28, 2013 prior to
the start of core processing at the core processing station situated on the Gasco uplands. Anchor QEA
lead a health and safety briefing each morning prior to the start of fieldwork activities.
The U.S. Moorings facility Health and Safety Officer led a detailed general health and safety briefing on
the morning of October 30, 2013 to discuss health and safety related to operating on the U.S. Moorings
property. A detailed project-specific health and safety briefing was led by Shannon & Wilson on
October 30, 2013 at the core processing station set up within a garage in one of the U.S. Moorings
buildings. Shannon & Wilson led health and safety briefings each morning prior to the start of core
processing activities.
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Section 3 • Observations
3.2.2 Use of Personal Protective Equipment
In accordance with the Anchor QEA HASP, proper PPE for the NW Natural investigation fieldwork was
modified Level D, requiring Tyvek (or rain gear made of heavy material with long sleeves and long
pants], hard hat, safety glasses, nitrile gloves and heavy work gloves (when handling heavy drilling
equipment], steel-toed boots, and hearing protection when needed. In addition, a personal floatation
device was required to be worn at all times on or over water. Used PPE was properly disposed of
within the exclusion zone as investigation derived waste. Overall, CDM Smith saw no substantive
deficiencies in PPE use.
In accordance with the Shannon & Wilson HASP, proper PPE for the USACE investigation fieldwork
was modified Level D, requiring hard hat, safety glasses, nitrile gloves and heavy work gloves (when
handling sediment core tubes], chemically protective safety boots, and hearing protection when
needed. The U.S. Moorings Health and Safety Officer made wearing a hard hat within the core
processing station optional since the work was carried out indoors (i.e., within a garage] minimizing
the potential for overhead hazards. The use of Tyvek was also optional depending on the type of work
being completed and the potential for splashing of contaminated soil or water.
Air monitoring was conducted by EHS Inc., a subcontractor to Shannon & Wilson, during core
processing activities. Air monitoring was conducted within the interior of the garage in which the
core processing station was located. The garage bay door was left open as were several windows
during core processing to allow adequate ventilation.
3.2.3 Slip, Trip, and Fall Hazards
No slip, trip or fall hazards occurred during field activities.
A health and safety incident occurred on October 31, 2013 at 2:40 pm when a Shannon & Wilson field
team member cut his thumb with a box cutter that slipped while he was using it to open the end caps
off Core SD-104. The U.S. Moorings facility Health and Safety Officer was notified and a report was to
be completed and filed. The cut was taken care of with minimal first aid at the site (i.e., Band-Aid],
3.2.4 Weather Hazards
No significant weather hazards were present during the NW Natural and USACE investigations,
primarily because the work was performed during decent weather at the end of October and early
November 2013.
CDNI
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Section 4
Deviations
4.1 Summary of Deviations and Field Change Requests
On October 28, 2013, Anchor QEA attempted to obtain a sediment core at the GS-01 location as
proposed in their Study Design for Sediment Characterization Adjacent to U.S. Moorings Site Required by
EPA - Addendum 1 to the Project Area Identification Report Quality Assurance Project Plan (Anchor QEA
2013], However, the river water level was too low for the core collection boat to access this location
near the shoreline during the investigation. Anchor QEA discussed the issue in the field with CDM
Smith and by phone with EPA. Anchor QEA submitted a FCR to EPA for approval on October 31, 2013
to document a proposed deviation to the sediment core collection method for this core. Anchor QEA
proposed collecting the sediment core at the GS-01 location using a hand-driven coring device while
the location was dry during an extremely low tide to occur around noon on November 1, 2013. EPA
approved the FCR and a copy is provided in Appendix D.
As described in the November 1, 2013 description in Section 3.1.1, Anchor QEA experienced
difficulties obtaining a sediment core to the targeted depth of 3 feet bml at the GS-01 location using
the hand-driven coring device due to the rocky substrate and due to difficulties recovering sediment
within the core tubes during extraction. Anchor QEA discussed the situation with EPA by phone. As a
result, Anchor QEA submitted a second FCR to EPA for approval on November 5, 2013 to document a
revised sampling approach to allow visual observations during excavation of the core tube from the
subsurface using a hand shovel and visual logging of material in the sidewalls to attain the targeted
depth. EPA approved the FCR and a copy is provided in Appendix D.
CDIVI
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Section 5
References
Anchor QEA, LLC. 2012. Draft Engineering Evaluation/Cost Estimate, Gasco Sediments Cleanup Site.
Prepared for U.S. Environmental Protection Agency Region 10 on behalf of NW Natural. May 2012.
Anchor QEA, LLC. 2013. Memorandum from Mr. Ryan Barth and Ms. Joy Dunay to Mr. Sean Sheldrake,
U.S. Environmental Protection Agency, re: Study Design for Sediment Characterization Adjacent to U.S.
Moorings Site Required by EPA - Addendum 1 to the Project Area Identification Report Quality
Assurance Project Plan. July 18, 2013.
Shannon & Wilson, Inc. 2013. Sediment Investigation WorkPlan, Geotechnical and Sediment
Investigation, U.S. Government Moorings, Portland, Oregon. Prepared for U.S. Army Corps of Engineers,
Seattle District. October 11, 2013.
U.S. Army Corps of Engineers. 2012. Letter from Ms. Christine Budai, Planning Programs and Project
Management Division, to Mr. Sean Sheldrake, U.S. Environmental Protection Agency Region 10, re:
Summary of Substantial Product in Sediment Cores, U.S. Government Moorings. August 14, 2012.
U.S. Environmental Protection Agency. 2012. Letter from Mr. Sean Sheldrake to Mr. Bob Wyatt, NW
Natural, and Mr. Tom McCue, Siltronic Corporation, re: Substantial Project Evaluation at U.S. Moorings
Site, Gasco Sediments Site. November 29, 2012.
U.S. Environmental Protection Agency. 2013a. Letter from Mr. Sean Sheldrake to Mr. Bob Wyatt, NW
Natural, and Mr. Myron Burr, Siltronic Corporation, re: Review of Study Design for Sediment
Characterization Adjacent to U.S. Moorings Site, Addendum 1 to the Project Area Identification Report
Quality Assurance Project Plan, Gasco Sediments Site. August 15, 2013.
U.S. Environmental Protection Agency. 2013b. Letter from Mr. Sean Sheldrake to Mr. Bob Wyatt, NW
Natural, and Mr. Myron Burr, Siltronic Corporation, re: EPA's Response to NW Natural's Response to
EPA's Review of Study Design for Sediment Characterization Adjacent to U.S. Moorings Site,
Addendum 1 to the Project Area Identification Report Quality Assurance Project Plan, Gasco
Sediments Site. September 9, 2013.
CDIVI
Smith
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Figures
CDM ,
Smith
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50-BGAQ
lp Core Location
Navigation Channel
\2
ANCHOR
QEA
Figure 1
Core Locations
Sediment Characterization Adjacent to U.S. Moorings Site - Data Report
Gasco Sediments Cleanup Action
-------
Legend
© Proposed Geotech Borehole Location
• Proposed Sediment Core Location
Proposed New Dock Location
v
0
L
50 100 200 Feet
_l l I l l l I
Date: 9/17/2013
Proposed
Geotechnical Boring and
Sediment Core Locations
U.S. Government Moorings
Figure 2
-------
Appendix A
Field Notes
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Reference* Page Index
147 Error codes. Hazardous classifications. Container types
148 Sampling guidelines (Liquids)
149 Sampling guidelines (Solids)
150 Approximate Volume of Water in Casing or Hole. Ground Water Monitoring Well
151 PVC Pipe casing tables
152 Soil Classification
153 Soil Classification
154 Maximum Concentration of Contaminants for the Toxicity Characteristic
155 Conversions (Concentrations. Volume/Flow or Time, Velocity. Acceleration)
156 Conversions (Length. Weight. Volume. Temp, etc...)
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-------
Appendix B
Field Oversight Photographs
cs^th
P:\50993-336-GASCO Siltronic\US Moorings SP Eva I Fie Id work Oversight 2013\Field Oversight ReportGasco US Moorings SP Investigation.docx
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 28, 2013
Core SDDA-18-AQ: 0 to 3 feet below mudline [bml)
Core SDDA-18-AQ: 0 to 3 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 28, 2013
Core SDDA-18-AQ: 2 to 3 feetbml
r, a. 8,133., "
S01)IK-Aq
lo IZ Z 2
&<»SG5 Se4s
i .7, .81 afEEJi, a a a & a 7, .
Core SDDA-18-AQ: 4 to 5 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 28, 2013
Core SDDA-18-AQ: 6 to 7 feet bml
Core SDDA-18-AQ: 8 to 9 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 28, 2013
Core SDDA-18-AQ: 9 to 10 feetbml
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-28.doc
Core SDDA-18-AQ: 10 to 11 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 28, 2013
Core SDDA-18-AQ: 11 to 12 feetbml
Core C528-AQ: 0 to 1 foot bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 28, 2013
Core C528-AQ: 1.5 to 3 feet bml
Core C528-AQ: 3 to 5 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 28, 2013
Core C528-AQ: 3 to 5 feetbml
7 e B,!3/pi< aJL-O 6 7 0
OTPV 4*wm iw'W'i'y'iw'j'wrw^yyfy,^
Core C528-AQ: 4.5 to 6 feet bin!
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 28, 2013
Core C528-AQ: 5 to 6 feetbml
Core C528-AQ: 6 to 7.5 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 28, 2013
Core C528-AQ: 7.5 to 9,3 feet bml
Core C528-AQ: 8 to 9.3 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 20-BF-AQ: 0 to 1 footbml
Core 20-BF-AQ: 1 to 2 feetbml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 20-BF-AQ: 1 to 2 feetbml
Core 20-BF-AQ: 2 to 3 feetbml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 20-BF-AQ: 4 to 5 feetbml
Core 20-BF-AQ: 5 to 6 feetbml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 20-BF-AQ: 6 to 7 feetbml
Core 20-BF-AQ: 8 to 9 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
Core 20-BF-AQ: 9 to 10 feet bml
Core 20-BF-AQ: 11 to 12 feet bml
CSDrK!.h
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 2Q-BF-AQ: 12 to 13 feet bml
Core 20-BF-AQi Black band at 11.7 feet bml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 50-BG-AQ: 0 to 1 footbml
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
Core 50-BG-AQ: 1 to 2 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 50-BG-AQ: 3 to 4 feet bml
Core 50-BG-AQ: 5 feet bml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 50-BG-AQ: 6 to 7 feet bml
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
Core 50-BG-AQ: 8 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 50-BG-AQi 9 to 10 feetbml
Core 50-BG-AQ: 11 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 50-BG-AQ: 13 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 29, 2013
Core 50-BG-AQ: 13 feetbml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-29.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
U- S-
2. t- i- a. i %%o- oo^r
I/., aute: 3 0,
Core SD-101: 0 to 1 foot bml
3 ,4 -S -6 . r -7 , , SF j* V1
, » a ,5 -6 ;
! j 3 . »» -i. -%
a a 1F •-« ' "
0 io ft 'r 1
Core SD-101: 1 to 2 feet bml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-30.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-101: 4 to 5 feetbml
Core SD-101: 5 to 6 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-101: 7 to 8 feetbml
Core 20-BF-AQ: 9 to 10 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-101: 10 to 11,1 feetbml
Core SD-101: Black layer at 9.05 to 9.4 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-30.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-102: 0 to 1 foot bml
Core SD-102: 1 to 2 feet bml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-30.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-102: 3 to 4 feetbml
Core SD-102: 4 to 5 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-30.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-102: 6 to 7 feetbml
Core SD-102: 7 to 8 feetbml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-30.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-102: 9 feetbml
Core SD-102: 10 to 11 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-102: 11 to 12.1 feetbml
Core SD-106: 0 to 1 foot bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
(X- S• s
21-1- oo^r
L03 nrfc: Oc-Jro^e'- SLO ( 3
£ofeOc+oWr 2. 20f3
Core SD-106: 1 to 2 feetbml
j
(X • S-
X \ - I- \ OOl-
L»s Owfe: Oc-t-o *oer- 3k 0^ a.O J *5
Ot+oWr Q.
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-106: 3 to 4 feetbml
Core SD-106: 4 to 5 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-30.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
2.1- l- a. > g ?<3- oo^f J
| Lo3 3oy 2LO I 2
* ^;ve.T>*V. Oc-k.W 2.?, 5L«J<-2
5 r> - t 06
Core SD-106: 5 to 6 feetbml
(X • ^ CV\
2-1-1- a.» g «
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-106: 7 to 8 feetbml
Core SD-106: 8 to 9 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-106: 9 to 10 feet bml
Core SD-106: 10 to 11 feet bml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-30.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
1
a c. *°°r_ln¥
(4',, %0'OO^r
. o o 2LP 1 ^
5 i> - 1
1
Core SD-106: 11 to 12 feet bml
Core SD-106: 12 to 13 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
US- 7CXJC fAoor
2. I - <- a. i g: 0O-+
Core SD-106: 13 feetbml
Core SD-106: Black layer at 4.58 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 30, 2013
Core SD-106: Black layer at 4.58 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-103: 0 to 1 foot bml
Core SD-103: 1 to 2 feet bml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-103: 3 to 4 feetbml
Core SD-103: 5 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-103: 6 to 7 feetbml
Core SD-103: 7 to 8 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
ci B U IV1
i f P « T p! -a a
8 9 10 77 7 2 3 4 5
.5
y Sj
.6 .7
7 a
•- q r .1 .3 • ,3
IO 11 —» V i a ^
Core SD-103: 8 to 9 feetbml
Core SD-103: 9 to 10 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-103: 11 feetbml
Core SD-103: 12 to 13 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
Core SD-103: 13 to 13,9 feetbml
Core SD-109: 0 to 1 foot bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-109: 1 to 2 feetbml
ZL I - l~ \ %ZO - OO^
II U r 6
¦ •' I 0~3 I- 1%
c.r.^ D-cf«: to-3-1- ZLO!-^
I 6«re rP« .S* D— 1 Of
Core SD-109: 2 to 3 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
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FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-109: 3 to 4 feetbml
Core SD-109: 4 to 5 feetbml
^mlth 46
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-109: 6 to 7 foot bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-109: 7 to 8 feetbml
Core SD-109: 8 to 9 feetbml
^nSth 48
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-109: 9 to 10 feet bml
Core SD-109: 10 to 11 feet bml
^nSth 49
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
1
n f ~ f- if £ %0 - oo~?
f U C. Gs\)ccr\r*.e*\+ M
Gore TX>< £ D ~~ 10*?
V1*
Core SD-109: 11 to 12 feet bml
Core SD-109: 12 to 13 feet bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-109: 13 to 13,9 feetbml
ii (¦ szj ' ^ - Oo-tj
-°J3•" / ^rT>; S-p-109
-rof ^
¥ 10 o
5 .
J 4
\
I
GZA GeoEnvlronmental, Inc.
Engtneeii/Scleiillsls
^-600-7 bi aw V
wvrw.ttaxcxn V
"T- ni 11 Zl 1
I A
~~ ~ I
OZ
— « p i 8
I | 9
' 5 5 KWMW OQV 1
Core SD-109: Black layer from 8.9 to 9.05 feetbml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
r ^ 1 - S go - ooTJ
M t. ~- ^oarir>(. _
/ Ot33,^T>^ ; / 2 *
Cor.^ D; 5*1)— 7o?
-rot* - i
GZA GeoEnvironmental, Inc.
Eng/nee«t/Scienrtsu
Core SD-109: Black layer from 8.9 to 9.05 feetbml
Core SD-107: 0 to 1 foot bml
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-107: 1 to 2 feetbml
Core SD-107: 2 to 3 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
W- (• GtVtfVk****'*' /Peering j
cJL D: S~V " 10"?-
«*. -u .
-
f
p- i - "M' •
•' ¦ r - v -rnr 'i .-vet • .
1
%Z f •*.. Site
**' " " ' *7^ - . m
f'l
¦
N <• *
\ X-
,7 .8 sr •& - r .2 .3
9 TO 77 7 2 3 4
A
f 5
3F .5 j, .6 .7 .8 ^9 dr' T-ft—
6 7 a 9 AO A A *41" A «L
* l
Core SD-107: 3 to 4 feetbml
Core SD-107: 4 to 5 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-107: 5 to 6 feetbml
al- i-l'
Core SD-107: 6 to 7 feetbml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-107: 7 to 8 feetbml
Core SD-107: 8 to 9 feetbml
^mlth 56
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-107: 9 to 10 feet bml
Core SD-107: 10 to 10,5 feet bml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-104: 0 to 1 foot bml
Core SD-104: 1 to 2 feet bml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
1 —¦— —
3C stf bf -3 tf A zr .5 .6 zf .7 ir .8 aF .9 _ -
cr 1 J 2 • 3 2F 4 2F 5 6 V' 7 y 8 ZF 9 « 10 1,1
Core SD-104: 2 to 3 feetbml
a (- i- il Sffo - oo-?
Core SD-104: 3 to 4 feetbml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-104: 4 to 5 feetbml
ll-l-Hg SO - qoy Wm
* ^ 1 0-~% 1- 2.0 /3
D; SV'lOf
1
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
a I - i- it QgQ - 007
V (• Mw'ng s
'_oU>'»}..W< : I 0 ' 2 J - I "3
f.«r.Vv t>
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-104: 8 to 9 feetbml
a ( - i-H 00-7
1 oivil-Vc 10-2 t-2-0 IS
AO*H-. 10 I0.2013
¦m
Core SD-104: 9 to 10 feet bml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-10-31.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
ai- i-at
1 ¦ 10 ~ 3) ~
~tAu 010- 30- 2Oil
oo^.Tt>: SV-lO^r
teg ill .!
to
%
. 1 —1"r
Core SD-104: 10 to 11 feet bml
a I - i-ilgfo-oo-7
,
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
October 31, 2013
Core SD-104: 12 to 12.15 feetbml
a I - (-21 8*0 - 99
i (. s
" <- Ti _ Y /7 <-r
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
Core SD-108: 0 to 1 foot bml
Core SD-108: 1 to 2 feet bml
^mlth 65
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-11-01.doc
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FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
Core SD-108: 2 to 3 feetbml
Core SD-108: 3 to 4 feetbml
^nSth 66
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-11-01.doc
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FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
'• y riooc*MS
T0V5#: J2I-I- 3-1 00~l
&r«W«: (0^30-3.oiS
txcte-: " - O ( - -2®(?
Xt: S"D - / 0%
Core SD-108: 4 to 5 feet bin I
Core SD-108: 5 to 6 feet bin I
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-11-01.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
Core SD-108: 6 to 7 feetbml
Core SD-108: 7 to 8 feetbml
^mlth 68
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-11-01.doc
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FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
Core SD-108: 8 to 9 feetbml
T«,v> #: al-l- 3-1 If-O-ooT-
W-•: jfrlf :5S'.i
ST>- 10?
Core SD-108: 9 to 10 feetbml
^nSth 69
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-11-01.doc
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FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
Cprt W<- {, -i»i 2
SV>- iog
.2 .3 v. A .5 .6 .7 -.b .6 .9 * ¦« -1 S
2 3 4 5 6 7 8 ' S 12 10 V. 11
*
Core SD-108: 10 to 11 feet bml
1
wf AW.™r
C«r< lO-^o-lot?
£«jtl -ot -ion
| iTort X fe." SD - I Og
T|§^
!
w*h B'W
mmtt
^ 1i 3 3 a «i
, „„»«»»* g 3 4
a*
Core SD-108: 11 to 12 feet bml
CSDrK!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-11-01.doc
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
Core SD-102: 12 to 13 feet bml
)
!f -V,
l" * L.
£ore | ] ^ ^
Core SD-108: 13 to 14.3 feet bml
CSDrR!.h
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-11-01.doc
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FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
GS-01 Location
GS-01 Location - Sheen on water in excavation hole (2nd attempted core location)
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
-------
FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
GS-01 Location - Sheen on water in excavation hole (1st attempted core location)
Core GS-01-AQi 0 to 1 foot bml
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FIELD PHOTOGRAPHY LOG SHEET
U.S. Moorings Substantial Product Investigation
November 1, 2013
Core GS-01-AQ: 1 to 1.6 feet bin I
CSDrK!.h
Core GS-01-AQ: Sediment removed during excavation to remove core from subsurface
P:\50993-336-GASCO Siltronic\US Moorings SP Eval Fieldwork Oversight 2013\Oversight ReporttAppendix B - Field Photos\Appendix B - US Mooring Field Photos_2013-11-01.doc
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Appendix C
Health and Safety Inspection Reports
cs^th
P:\50993-336-GASCO Siltronic\US Moorings SP Eva I Fie Id work Oversight 2013\Field Oversight ReportGasco US Moorings SP Investigation.docx
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment
Sampling: 10/28/13
Health and Safety Summary
Recorded by: Shawn Oliveira, Certified Industrial Hygienist and Certified Safety Professional
10/28/13:
0800 hrs: CDM Smith and Anchor QEA personnel meet at the Gasco site for initial health and
safety (H&S) kickoff meeting. Activities planned for October 28th included collection of 5
sediment cores adjacent to the U.S. Government Moorings (U.S. Moorings) property using a
boat with Vibracore sampling technology and onshore core processing. Topics discussed
include:
• Elements of Anchor QEA health and safety plan (HASP) (dated September 2010)
• Automated external defibrillator (AED) availability and operations
• Photoionization detector (PID) and Draeger tube monitoring of potential contaminants,
including action levels and corresponding activities
• Routes of potential exposure, expected hazards, and control measures
• Personal protective equipment (PPE) required during offshore and onshore operations,
including personal flotation devices (PFDs)
• Training certifications necessary for personnel
• Emergency response plans
0830 hrs: Arrive at Cathedral Park boat launch. Safety briefing held with Vibracore boat
operators Marine Sampling Systems, Inc. (MSS) of Port Orchard, Washington (Bill Jaworski,
vessel captain, and Dale Dickinson, deckhand). MSS personnel discuss vessel safety rules,
emergency response, boat operations, and expected hazards/controls when on the vessel.
Following safety briefing, crew prepares equipment/ vessel, launches, and proceeds to initial
core sample location.
0923 hrs: CDM Smith H&S performs comprehensive safety inspection of ongoing project
activities, and records no unsafe issues. Sampling and tasks are observed to be conducted in
accordance with the Anchor QEA HASP and project safety procedures.
Approx. 1200 hrs: Crew returns to shore for lunch break and core processing following
collection of two cores (SDDA-18-AQ and C528-AQ) using the Vibracore.
1300 hrs: Onshore core processing in progress. CDM Smith H&S performs comprehensive
safety inspection of ongoing project activities, and records the following safety issues:
• Unable to determine whether the electric tools used in processing are running off of a
ground fault circuit interrupter (GFCI) outlet. Markings were not present on the outlets
and cords. Ryan Barth of Anchor QEA stated that GFCIs were inherent to the terminal
wiring in use.
• A charged and inspected fire extinguisher was not in place initially during sample
processing. Anchor QEA personnel immediately placed a suitable, charged extinguisher
at the processing location.
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment
Sampling: 10/28/13
• A gas can, and 3-20 liter cans of hexane were observed to be stored in a nearby Connex
box (unrelated to oversight work). After bringing to the attention of Anchor QEA
personnel, this was removed and placed in a separate flammable storage area.
• An aluminum core cutting tool (circular saw) appeared to have been locally modified.
This was a tool constructed by MSS. The blade guard appeared to have been fixed in
place, and unable to determine if this is consistent with the manufacturer's
recommendations.
1419 hrs: Onshore core processing continues. CDM Smith H&S performs a comprehensive
safety inspection of activities and records the following safety issue:
• Employee 40-hour HAZWOPER and 8-hour HAZWOPER Refresher certificates are not
available onsite. It is noted that certain employees, such as the vessel deckhand, should
require 40-hour training, but CDM Smith is unable to confirm this completion. Anchor
QEA to provide these certificates and maintain onsite.
Overall Safety Summary
Based on a review of the Gasco/Moorings sample collection/processing performed by Anchor
QEA and the vessel subcontractor, all program elements are in place to the degree required by
the Occupational Safety and Health Administration (OSHA), applicable project HASPs, and
accepted industry safety protocol as documented in the safety review inspections.
-------
CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment
Sampling: 10/28/13
The following are select photos from the 10/28/2013 Gasco/Moorings sampling activities.
Photo 1: Setup of core processing location on the Gasco site upland.
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment
Sampling: 10/28/13
Photo 2:
Offshore sample collection and data recording on Vibracore vessel.
-------
CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment
Sampling: 10/28/13
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment
Sampling: 10/28/13
Photo 4:
Crew logs sample information. Volatile organic compound (VOC) monitor in
foreground.
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment
Sampling: 10/28/13
Photo 5 Anchor QEA personnel cutting sediment core tubes and processing core on the
Gasco site upland.
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment
Sampling: 10/28/13
SafetyNet Inspection Review
The SafetyNet system employs a user-friendly platform to quickly and efficiently record
observations of field activities. Checklists are accessed on a smartphone or tablet device and are
used by H&S personnel to evaluate work progress and compliance with the September 2010
Revised Final Anchor QEA Health and Safety Plan. Observations of activities are objectively
treated as either safe or unsafe. Safe observations are uploaded to the server and tracked
accordingly. Unsafe observations are treated as an open issue that must be corrected. Information
related to the unsafe observation, such as the type and severity of the hazard, recommended
corrective action, party responsible for implementing the corrective action, and the timeframe
required to complete the corrective action, must be entered. Unsafe observations (i.e., open issues)
remain open until a corrective action has been confirmed. The time duration of open issues is also
tracked.
The SafetyNet inspections allow for a comprehensive assessment of all program elements
required under the HASP.
The following tables provide a summary of the SafetyNet inspections performed by CDM Smith
H&S at the Gasco/Moorings sampling locations on 10/28/13.
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment Sampling: 10/28/13
Inspection Type
Inspections
Observations
Unsafe Conditions
% Safe
Safety
3
168
5
97.00%
Gasco Moorings
Category
Sub-Category
Observations
Conditions
% Safe
Unsafe Conditions
Safe Conditions
Administration
Summary
25
0
25
100.00%
Document pre-const
2
0
2
100.00%
mtss
Emergency action olan
10
0
10
100.00%
Freq/res safety
1
0
1
100.00%
inspections
JHA/AHA submitted
1
0
1
100.00%
each trade
Safety manual
2
0
2
100.00%
Safety meetings
3
0
3
100.00%
State / Fed posters
1
0
1
100.00%
(Eng/Sp)
Visitor PPE available
2
0
2
100.00%
Visitor sign-in form
3
0
3
100.00%
Drilling Operations
Summary
1
0
1
100.00%
Containers
1
0
1
100.00%
labeled/stored
Electrical
Summary
9
1
8
88.90%
Cords in good condition
1
0
1
100.00%
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment Sampling: 10/28/13
Category
Sub-Category
Observations
Conditions
% Safe
Unsafe Conditions
Safe Conditions
Cords protected from
traffic
1
0
1
100.00%
Elect Hot Work
Procedures
1
0
1
100.00%
Electrical room
protected
1
0
1
100.00%
Energized parts
protected
1
0
1
100.00%
GFCI's used
1
1
50.00%
Proper use temp pwr
bxs
1
0
1
100.00%
Signage present
1
0
1
100.00%
Environmental
Summary
18
0
18
100.00%
Containers labeled
2
0
2
100.00%
Dust Control Adequate
2
0
2
100.00%
Haz material properly
stored
2
0
2
100.00%
Haz waste/RCRA
requirements
10
0
10
100.00%
Spill containment
adequate
2
0
2
100.00%
Fire Protection
Summary
5
2
3
60.00%
Ext charged and
inspected
2
1
1
50.00%
Fire suppression equip
avail
1
0
1
100.00%
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment Sampling: 10/28/13
Category
Sub-Category
Observations
Conditions
% Safe
Unsafe Conditions
Safe Conditions
Proper fuel containers
used
2
1
1
50.00%
Hand And Power Tools
Summary
16
1
15
93.80%
Cord in good condition
2
0
2
100.00%
Gauges working
properly
4
0
4
100.00%
Ground prong in place
1
0
1
100.00%
Guards in place
2
0
2
100.00%
Proper tool for the job
2
0
2
100.00%
Strain relief functioning
1
0
1
100.00%
Tool in good condition
4
1
3
75.00%
Hazard
Communications
Summary
8
1
7
87.50%
Copy of program
1
0
1
100.00%
Employees trained
5
1
4
80.00%
MSDS' (site specific)
1
0
1
100.00%
Readily available
1
0
1
100.00%
Housekeeping
Summary
15
0
15
100.00%
Clear access to bldg/site
2
0
2
100.00%
Designated employee
parking
2
0
2
100.00%
Impalement protection
1
0
1
100.00%
Proper material storage
2
0
2
100.00%
Roadway around proj
clear
2
0
2
100.00%
Slip, trip, fall hazards
2
0
2
100.00%
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CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment Sampling: 10/28/13
Category
Sub-Category
Observations
Conditions
% Safe
Unsafe Conditions
Safe Conditions
Trash in protected cont
2
0
2
100.00%
Walkways clear
2
0
2
100.00%
Medical / Emergency
Summary
16
0
16
100.00%
1st Aid/CPR on site
2
0
2
100.00%
1st aid kit
2
0
2
100.00%
Emergency action plan
2
0
2
100.00%
Emergency numbers
posted
2
0
2
100.00%
Emergency procs
supplies
2
0
2
100.00%
Eye wash
2
0
2
100.00%
Map to medical facility
2
0
2
100.00%
Team contact numbers
2
0
2
100.00%
P.P.E.
Summary
46
0
46
100.00%
Glasses / face shields
7
0
7
100.00%
Gloves
7
0
7
100.00%
Hard Hats
7
0
7
100.00%
Hearing protection
4
0
4
100.00%
Metatarsal protection
7
0
7
100.00%
Proper Clothing
7
0
7
100.00%
Work Boots
7
0
7
100.00%
Site / Public Protection
Summary
9
0
9
100.00%
Adequate break areas
4
0
4
100.00%
Adequate lighting
1
0
1
100.00%
Barricades installed
properly
1
0
1
100.00%
-------
CDM Smith Field Safety Report: Gasco/Moorings Offshore Sediment Sampling: 10/28/13
Category
Sub-Category
Observations
Conditions
% Safe
Unsafe Conditions
Safe Conditions
Company rep present
1
0
1
100.00%
Perimeter fences
1
0
1
100.00%
Public protection
signage
1
0
1
100.00%
OSHA Recordables/Lost Time:10/28/13 = 0 OSHA Recordables/Lost Time To Date = 0
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Appendix D
Field Change Requests
cs^th
P:\50993-336-GASCO Siltronic\US Moorings SP Eva I Fie Id work Oversight 2013\Field Oversight ReportGasco US Moorings SP Investigation.docx
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NW Natural and Siltronic Corporation
Gasco Sediments Cleanup Action
Field Change Request Form
Project Name:
Field Activity:
To:
Gasco Sediments Cleanup Action Subconsultant: Anchor QEA
Sediment Core Collection
Sean Sheldrake, EPA
Request Number: 1
Date: October 31, 2013
Field Change Request (FCR) Title:
Revised Core Collection Method - Insufficient Water Depth
Description:
NW Natural attempted to collect a single core from each of the five target stations identified
in the EPA-approved Study Design for Sediment Characterization Adjacent to U.S. Moorings Site Required by EPA
-Addendum 1 to the Project Area Identification Report Quality Assurance Plan, dated July 18, 2013. The river
water surface elevations were too shallow to facilitate core collection from a vessel at station GS-01.
Recommended Change:
NW Natural proposes collection of the core at station GS-01 using a hand-driven
core, accessed by personnel from the landside. The core will either be a 2-inch or 3-inch decontaminated,
Polycarbonate tube that is 3 to 4 feet in length, respectively. The diameter size will be selected based on the
nature of the encountered materials. Anchor QEA proposes collection at the target location on Friday November
1, 2013 between 12 and 1pm during the low tide. CDM Smith and USACE personnel will be present during
collection. Anchor QEA and CDM Smith personnel will perform the core processing at an upland core processing
area immediately following core collection to visually evaluate the presence of substantial product in the upper
0 to 2 foot interval. USACE personnel will be provided access to observe the core processing activities per EPA's
request.
Joy Dunay
6
Respondent Field Coordinator (or Designee)
Signature
October 31, 2013
Date
Approval:
Ryan Barth
Respondent Project Lead
Signature
October 31, 2013
Date
Distribution List:
Sean Sheldrake, EPA
Sheldrake.Sean@epamail.epa.gov; 206-553-1220
Lance Peterson, CDM Smith
PetersonLEfficdmsmith.com: 425-519-8300
James Peale, MFA
jpealeffimaulfoster.com: 503-501-5218
Carl Stivers, Anchor QEA
cstiversffianchorqea.com; 509-888-2070
-------
NW Natural and Siltronic Corporation
Gasco Sediments Cleanup Action
Field Change Request Form
Bob Wyatt, NW Natural
riw@nwnatural.com; 503-226-4211, ext. 5425
Patty Dost, Pearl Legal Group PC
pdost@ pearllegalgroup.com; 503-467-4675
Myron Burr, Siltronic
Myron.Burr@siltronic.com; (503) 219-7832
Ryan Barth, Anchor QEA
rbarth@anchorqea.com; 206-287-9130, ext. 334
Ben Hung, Anchor QEA
bhung@anchorqea.com; 503-688-5057
Alan Gladstone, Davis Rothwell Earle and Xochihua
agladstone@davisrothwell.com; 503-222-4422
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NW Natural and Siltronic Corporation
Gasco Sediments Cleanup Action
Field Change Request Form
Project Name: Gasco Sediments Cleanup Action Subconsultant: Anchor QEA
Field Activity: Sediment Core Collection Request Number: 2
To: Sean Sheldrake, EPA Date: November 5,2013
Field Change Request (FCR) Title: Revised Core Collection Method Amended Approach
Description: As discussed in Field Change Request Form #1 dated October 31, 2013, NW Natural proposed
the collection of a single hand-driven core at station GS-01 accessed from the landside. Anchor QEA, CDM
Smith, and USACE personnel accessed the station from the landside on November 1, 2013. The subsurface
substrate prevented the collection of a core to the target 3 feet below ground surface so Anchor QEA contacted
EPA to propose a revised sampling approach. EPA agreed with the revised approach (described below) and
provided verbal approval to proceed. The revised approach achieved the visual observations to the target
depth.
Recommended Change: Station GS-01 contained 10-inch cobble at the ground surface so Anchor QEA
field personnel removed the cobble to expose the underlying sandy surface. Anchor QEA attempted to hand
drive a decontaminated 3-foot polycarbonate core tube to 3 feet below ground surface (2 feet 2 inches
below sandy surface - accounts for removal of the overlying 10-inch layer of cobble). Several attempts were
made to reach this target depth without success due to rocky substrate below the sand layer. The deepest core
penetration was 3 feet 6 inches. Upon recovery of the core, only 1 foot 8 inches of material was recovered.
Therefore, Anchor QEA contacted EPA to describe the recovery issue and propose a revised sampling approach
that would allow visual observations of the remaining 6 inches below the core recovery depth. This approach
included digging using a hand shovel and visually logging the mixed materials in coordination with CDM Smith.
EPA approved this approach by telephone. Anchor QEA dug a hole to 3 feet below the cobble surface and placed
materials in buckets. Anchor QEA and CDM Smith logged the materials captured in the core tube and visually
logged the mixed material in the buckets. No material was identified that achieved the definition of substantial
product so this station was designated as containing no substantial product.
Joy Dunay
6
November 5, 2013
Respondent Field Coordinator (or Designee) Signature Date
Approval:
Ryan Barth J November 5,2013
Respondent Project Lead Signature Date
-------
NW Natural and Siltronic Corporation
Gasco Sediments Cleanup Action
Field Change Request Form
Distribution List:
Sean Sheldrake, EPA
Sheldrake.Seanffiepamail.epa.gov; 206-553-1220
Lance Peterson, CDM Smith
PetersonLE(Scdmsmith.com; 425-519-8300
Bob Wyatt, NW Natural
rjwPnwnatural.com; 503-226-4211, ext. 5425
Patty Dost, Pearl Legal Group PC
pdostffipearllegalgroup.com; 503-467-4675
Myron Burr, Siltronic
Myron.BurrPsiltronic.com; (503) 219-7832
James Peale, MFA
jpealeffimaulfoster.com; 503-501-5218
Carl Stivers, Anchor QEA
cstiversffianchorqea.com; 509-888-2070
Ryan Barth, Anchor QEA
rbarthPanchorqea.com; 206-287-9130, ext. 334
Ben Hung, Anchor QEA
bhungffianchorqea.com; 503-688-5057
Alan Gladstone, Davis Rothwell Earle and Xochihua
agladstonePdavisrothwell.com; 503-222-4422
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