Fox Island Former Underground Storage Tank Site VCP# SW1022

JUNE 2012 TABLE OF CONTENTS

i

Table of Contents

SECTION 1 – INTRODUCTION ........................................................................................................................................ 1-1

1.1 Background .................................................................................................................................. 1-1

SECTION 2 – SITE INVESTIGATION CHRONOLOGY .......................................................................................................... 2-1

2.1 Other Relevant Events ................................................................................................................. 2-1

SECTION 3 – SITE CHARACTERIZATION ......................................................................................................................... 3-1

3.1 Soil ............................................................................................................................................... 3-1

3.2 Groundwater................................................................................................................................. 3-1

3.3 Comparison to cleanup levels ...................................................................................................... 3-2

3.4 Exclusion from Terrestrial Ecological Evaluation .......................................................................... 3-3

SECTION 4 – SOIL AND GROUNDWATER REMEDIATION .................................................................................................. 4-1

4.1 Soil Remediation .......................................................................................................................... 4-1

4.2 Groundwater Remediation ........................................................................................................... 4-1

SECTION 5 – CONCLUSIONS ......................................................................................................................................... 5-1

5.1 Soil ............................................................................................................................................... 5-1

5.2 Groundwater................................................................................................................................. 5-1

SECTION 6 – REFERENCES ........................................................................................................................................... 6-1

Tables

Table 2-1: Site Investigation and Remediation Chronology

Table 3-1: Statistical Summary of Soil Data Collected at the Fox Island Former UST Site

Table 3-2: Soil Data Collected at the Fox Island Former UST Site

Table 3-3: Statistical Summary of Groundwater Data Collected at the Fox Island Former UST Site

Table 3-4: Groundwater Data Collected at the Fox Island Former UST Site

Figures

Figure 1-1: Site Location

Figure 2-1: Tank and Soil Removal Areas

Figure 3-1: Soil Sample Locations

Figure 3-2: Groundwater Sample Locations

Figure 3-3: Terrestrial Ecological Evaluation Exclusion #3 Detail

Appendices

Appendix A: 2012 Confirmation Sampling Field Notes and Boring Logs

Appendix B: 2012 Confirmation Sampling Analytical Data

Appendix C: Terrestrial Ecological Evaluation Process - Primary Exclusions Form


JUNE 2012 ACRONYMS AND ABBREVIATIONS

ii

Acronyms and Abbreviations

Acronym Explanation

bgs Below ground surface

CUL Cleanup level

DRO Diesel Range Organics

Ecology Washington State Department of Ecology

EMS Environmental Management Services, Inc.

ETS Environmental Tank Service

ft Feet

Golder Golder Associates

GW Groundwater

Langseth Langseth Environmental Services, Inc.

MTCA Model Toxics Control Act

NFA No Further Action

PCS Petroleum-containing soil

PIONEER PIONEER Technologies Corporation

ROW Right-of-way

Site Fox Island Former UST Site

UST Underground storage tank

VCP Voluntary Cleanup Program

WAC Washington Administrative Code


JUNE 2012 SECTION 1 – INTRODUCTION

1-1

SECTION 1 – INTRODUCTION

PIONEER Technologies Corporation (PIONEER) has prepared this report on behalf of Scott and Tonya

Barker (the Barkers), to summarize and conclude the soil and groundwater investigations conducted at the

former underground storage tank (UST) site located at 612 9th Avenue FI, Fox Island, Washington (Site).

This report presents a chronological summary of the activities conducted at the Site, soil and groundwater

sampling results, and a comparison to cleanup levels. The purpose of this report is to provide the basis

for the Washington State Department of Ecology (Ecology) to determine that No Further Action (NFA) is

required at the Site.

1.1 Background

The Site is located on Fox Island, situated west of Tacoma, in Puget Sound, Washington (See Figure 1-1).

The Site is the location of a former convenience store and fueling station which operated between

approximately 1930 and 1980 (EMS 2010). The convenience store and fueling station had four USTs

located at the Site, all of which have been removed.

The potential for contamination at the Site was identified circa 1992 when the owner, Carl Forsbeck,

determined that USTs were likely still present in subsurface soils at the Site. The Site entered into

Ecology's Voluntary Cleanup Program (VCP) as the Barker Property Service Station, Site #SW1022 and

facility #4769939, in April 2009 under the direction of Environmental Management Services, Inc., (EMS)

and current owner Tonya Barker.

A variety of environmental investigation and removal activities have occurred at the Site since its

discovery, including removal of USTs, soil, and groundwater, multiple subsurface soil and groundwater

investigations, and multiple rounds of post-remediation groundwater monitoring.

PROJECT:

FIGURE NO.:

DWN:

DATE:

Corporate Remediation GroupAn Alliance between

DuPont and URS Diamond140 Cypress Station Drive

Houston, Texas 77090

0 0.50.25 Miles

June 2012

Site LocationFox Island Former Underground Storage Tank Site VCP# SW1022

Fox Island, Pierce County, Washington1-1

SM

Fox Island

Nisqually

Barker Property

Fox Island

Joint BaseLewis-McChord

Tacoma

Carr Inlet

Hale Passage


JUNE 2012 SECTION 2 – SITE INVESTIGATION CHRONOLOGY

2-1

SECTION 2 – SITE INVESTIGATION CHRONOLOGY

PIONEER obtained copies of relevant reports and documents from the Barkers prior to conducting a soil

and groundwater confirmation sampling investigation at the Site. Historical reports and maps were

reviewed in order to understand the Site history. A Site investigation/remediation timeline was

determined, as shown below. The media sampled is in parentheses following the name of each

investigation.

Notes:

ETS=Environmental Tank Service. ROW=Right-of-way. EMS = Environmental Management Services. GW=Groundwater

A chronological account of the investigations and removal actions conducted at the Site, the purpose of

each investigation, the media sampled, and the number of samples is presented in Table 2-1. Figure 2-1

presents the areas of the Site where removal actions were conducted. In addition, other events relevant to

the Site investigation and remediation are described in the following section.

2.1 Other Relevant Events

December, 2001 - After the Langseth Environmental (Langseth) report was issued, Mr. Carl

Forsbeck (property owner at the time) informed Ecology that he deeded the ROW over to Pierce

County and was not inclined to pursue further cleanup in the roadway (Ecology 2008).

February/March, 2004 - Pierce County Department of Public Works Transportation Services

contracted Golder Associates (Golder) to address the potential for contamination in the Pierce

County ROW. During a Site meeting, Ecology informed Mr. Forsbeck of the need to remove a

hydraulic hoist in the northwest corner of the Site. Ecology also coordinated with Golder

regarding the subsurface investigations planned in the Pierce County ROW (Ecology 2008).

June-September, 2005 - Ownership of the Site changed twice. Mr. Forsbeck sold the Site to


JUNE 2012 SECTION 2 – SITE INVESTIGATION CHRONOLOGY

2-2

realtor Michael Diaz. Mr. Diaz then sold the property to the Barkers. Following the property sale

from Mr. Diaz, Ecology contacted the Barkers to notify them that Site cleanup and remediation

efforts should be continued. The Barkers were unaware of contamination being present at the

Site, stating that such information was not included in the disclosure statement during the

property sale from Mr. Diaz (Ecology 2008). Ecology then provided the Barkers with copies of

the Don Golden, Langseth Environmental, and Golder Associates reports.

March, 2006 - Mr. Diaz had EMS provide a soil remediation work plan to Ecology which

described excavation of petroleum-containing soil (PCS) in the northwest corner of the Site and

dewatering petroleum-impacted groundwater (Ecology 2008).

July/August, 2006 - EMS verbally communicated to Ecology that approximately 212 tons of PCS

were excavated and removed from the northwest corner of the Site. EMS described the

excavation as being 30’ wide by 50’ long, and of variable depth. An outline of the soil

excavation is presented in the 2009 EMS Subsurface Investigation report (EMS 2009). A 500-

gallon UST was unexpectedly encountered and removed along with the PCS. Approximately 500

gallons of petroleum-impacted groundwater was pumped and removed from the northwest corner

of the Site following the remedial excavation. Future monitoring was proposed for the three on-

Site groundwater monitoring wells (MW-2, MW-3, and MW-41) which were installed following

the excavation activities (Ecology 2008). The soil and groundwater remediation activities were

documented in a report prepared for Mr. Diaz. Mr. Diaz has not made the report available to

Ecology or the Barkers.

1 Following the January and November 2007 monitoring events, the on-site well names were revised. MW1 became MW3,

MW2 became MW4, and MW3 became MW2 (EMS 2010). This report identifies the wells using the updated names. MW4 was

installed by EMS in August, 2010, in the center of the 2006 remediation area.

PROJECT:

FIGURE NO.:

DWN:

DATE:




0 5025 Feet

June 2012

Tank and Soil Removal AreasFox Island Former Underground Storage Tank Site VCP# SW1022


SM

LegendBarker Property Boundary

Excavation Boundaries2004 Hoist Removal Area2006 Excavation2009 Confirmation Excavation

Fox Island

Nisqually

Notes:

Excavation boundaries are approximate.

Location data was unavailable or insufficient for the 1992 Don Golden Co UST removal. Therefore, it is not included on this figure.

Barker Property


Tacoma

Fox Drive FI

Puget Sound

FormerFerry Dock

Pierce CountyRight-of-Way

9th Ave FI

Table 2-1: Site Investigation and Remediation Chronology

Activity Category Purpose Media Sampled Samples Soil GW

1992

Don Golden Underground Storage

Tank Removal

Remediation and Characterization

Two underground storage tanks (USTs) were removed from the site. A 1,000-gallon tank in

northwest corner of the site was suspected to contain gasoline and a 550-gallon tank was

suspected to contain waste oil or fuel oil.

Soil

7 soil samples collected:

-6 collected from property boundary

perimeter.

-1 collected from excavated soil stockpile.

7 0

2001

Langseth Environmental Service

Subsurface Investigation

CharacterizationFour direct-push borings were advanced to sample soil and groundwater to determine the

post-excavation soil constituent concentrations. Soil and Groundwater

4 direct-push borings advanced, soil and groundwater

collected from each boring:

-4 soil samples collected from northwest

corner of site.

-4 groundwater samples collected from

northwest corner of site.

4 4

2004

Environmental Tank Service Hydraulic

Hoist Removal


The hydraulic hoist and hydraulic fluid UST located in the northwest corner of the site,

proximate to the former gasoline underground storage tank, were removed. Soil and

groundwater samples were collected to determine post-excavation constituent

concentrations.

Soil and Groundwater

1 soil and 1 groundwater sample collected:

-1 soil sample collected from bottom of

excavation footprint.

-1 groundwater sample collected from water

present in bottom of excavation footprint.

1 1

2005

Golder Associates Pierce County Right-

of-Way Subsurface Investigation.

CharacterizationSubsurface investigation in area hydraulically downgradient of the site in Pierce County Right-

of-Way to assess the posibility of off-property constituent migration from the site. Soil and Groundwater

6 hollow-stem auger borings advanced:

-9 soil samples collected from the 6 borings

-MW1, MW2B, and MW3 installed as

monitoring wells, and sampled for groundwater.

6 direct-push borings advanced:

-13 soil samples collected from the 6 borings.

-3 groundwater samples collected from 3 of

the borings.

22 6

2005

Environmental Management Services

(EMS) Subsurface Investigation

CharacterizationSubsurface investigation consisting of 6 test pits was conducted in northwest corner of site to

characterize constituents in soil related to former underground storage tanks.Soil and Groundwater

6 test pits dug in northwest corner of site:

-6 soil samples collected from 4 of the test pits.

-2 groundwater samples collected from 2 of

the test pits.

6 2

2006

EMS Soil Excavation and Groundwater

Removal


212 tons of petroleum-containing soils were excavated and removed from the northwest

corner of the site. A fourth UST was encountered and removed. 500 gallons of petroleum-

containing groundwater were pumped and removed from the northwest corner of the site.

2007

EMS Groundwater MonitoringCharacterization

On-site groundwater monitoring wells were installed in the northwest corner of the site, in and

around the area excavated in 2006. Wells were sampled in January 2007 and November

2007.

Groundwater

6 groundwater samples collected:

-3 groundwater samples collected from on-site

monitoring wells MW-2, MW-3, and

MW-4 sampled in January 2007.

-3 groundwater samples collected from on-site

monitoring wells MW-2, MW-3, and

MW-4 sampled in November 2007.

0 6

2009

EMS Subsurface Investigation and

Remediation


Test-pits were excavated to straddle the 2006 excavation boundary, and to confirm that

constituents in soil were removed during 2006 excavation. An additional 20 cubic yards of

petroleum-containing soil was excavated and disposed of at Land Recovery, Inc.

Soil

6 test pits dug in northwest corner of site:

-10 soil confirmation samples collected from

test pit walls and bottoms following 2006

excavation.

-2 soil confirmation samples collected from

over-excavated area.

12 0

2010

EMS Groundwater MonitoringCharacterization

On-site groundwater monitoring wells are located in the northwest corner of the site, in and

around the area excavated in 2006.Groundwater


-On-site monitoring wells MW-2, MW-3, and

MW-4 sampled in November 2010.

0 3

2012

PIONEER Technologies Corporation

Confirmation Sampling

CharacterizationDowngradient monitoring wells were sampled to assess the potential for off-property

migration. Soil samples were collected to confirm that soil removal activities were adequate.Soil and Groundwater


-Off-site monitoring wells in Pierce County

Right-of-Way (MW1, MW2B, MW3) sampled.

4 soil samples collected:

-Confirmation samples collected from locations

in northwest corner of site where historical

constituent exceedances were observed.

4 3

Details unavailable.

Fox Island Former Underground Storage Tank Site VCP#SW1022

Page 1 of 1


JUNE 2012 SECTION 3 – SITE CHARACTERIZATION

3-1

SECTION 3 – SITE CHARACTERIZATION

3.1 Soil

Soil samples have been collected from test pits, geoprobe borings, hollow-stem auger borings, and

discrete grab samples at the Site and in the adjacent Pierce County ROW. Figure 3-1 presents the sample

locations and Table 3-1 summarizes the constituents analyzed, the number of samples, and the minimum

and maximum concentrations. Table 3-2 presents analytical results for all samples collected at the Site.

Historical maps did not present a reference scale; therefore sample locations were incorporated into

Figure 3-1 using GIS georeferencing techniques. All historical locations presented are approximate. The

following subsections provide physical and chemical characteristics of soils at the Site.

3.1.1 Physical Characterization

3.1.1.1 Native Soil

Soils encountered at the Site and in the adjoining Pierce County ROW generally consisted of a shallow

sand unit extending from 3 to 5 feet (ft) below ground surface (bgs). From 5 to 9 ft bgs, a sandy, silty

plastic clay unit with intermixed sand and gravel layers was observed. Beneath the deeper clay unit,

compacted sand and gravel (glacial till) was observed (Langseth 2001; Golder 2005; EMS 2005).

3.1.1.2 Fill Soil

Soils encountered at the Site in areas which underwent historic excavation and fill consisted of generally

uniform fine to medium light brown to grey sands, with small amounts of intermixed gravel and clay

(EMS 2009; PIONEER 2012). Boring logs from the 2012 PIONEER sampling event are presented in

Appendix A.

3.1.2 Chemical Characterization

Table 3-1 presents a statistical summary of the soil data collected at the Site. As shown in the table,

benzene, diesel, ethylbenzene, gasoline, heavy oil, lead, toluene, and xylenes have been detected in soil at

the Site. All other constituents sampled were not detected. The types of constituents detected in soil, the

general depth at which those constituents were detected (2-6 ft bgs), and the location of the detections is

consistent with a release of petroleum products to soil from leaking underground storage tanks.

3.2 Groundwater

Groundwater samples have been collected during investigations at the Site from test pits, temporary

monitoring wells in direct-push borings, and groundwater monitoring wells. Figure 3-2, Table 3-3, and

Table 3-4 present the locations and analytical data for the historical groundwater test-pit and monitoring

well sampling locations. Historical maps did not present a reference scale; therefore sample locations

were incorporated into Figure 3-2 using GIS georeferencing techniques. All historical locations presented

are approximate.

The following subsections provide physical and chemical characteristics of groundwater at the Site.



3-2

3.2.1 Physical Characterization

Groundwater at the Site is relatively shallow and varies in depth across the Site and in the Pierce County

ROW. Depth to groundwater observed in monitoring wells is generally in the 10-20 ft bgs range,

although groundwater around MW1 is likely a perched layer at 2-6 ft bgs (Golder 2005; EMS 2010;

PIONEER 2012).

Low-flow groundwater sampling of the Pierce County ROW wells and on-Site wells showed that most of

the wells exhibit slow recharge rates (EMS 2010, PIONEER 2012).

Groundwater flow is presumed to be in a northeasterly direction, based on the water levels observed in the

3 groundwater monitoring wells in the Pierce County ROW (Golder 2005). This is consistent with

expected Site groundwater flow direction toward the Puget Sound, approximately 150 ft to the northeast.

3.2.2 Chemical Characterization

Table 3-3 presents a statistical summary of the groundwater data collected at the Site. As shown in the

table, gasoline, diesel, heavy oil, benzene, toluene, ethylbenzene, xylenes, lead, barium and chromium

have been detected in groundwater at the Site. All other constituents sampled were not detected.

3.3 Comparison to cleanup levels

3.3.1 Soil

Washington's Model Toxics Control Act (MTCA) identifies soil Cleanup Levels (CULs) based on

different types of land use. Use of MTCA Method A Soil CULs is appropriate at the Site since; (1) the

types of common chemicals detected are expected based on the Site's history and former presence of

USTs; (2) land use at and surrounding the Site is mixed residential (i.e., unrestricted), and; (3) the Site

cleanup actions are consistent with Ecology's definition of a "routine cleanup action" as described in

Washington Administrative Code (WAC) 173-340-200 (Ecology 2007).

Table 3-2 presents soil data collected at the Site compared to MTCA Method A Soil CULs. Samples

which detected constituents at concentrations above MTCA soil CULs are highlighted in yellow.

Gasoline, benzene, toluene, and xylenes were detected in at least one sample at concentrations exceeding

MTCA Method A Soil CULs. Ethylbenzene, diesel, heavy oil and lead, were detected but, the maximum

concentration was below Method A CULs. Site activities conducted to address MTCA Method A Soil

CUL exceedances are described in Section 4.

3.3.2 Groundwater

MTCA Method A Groundwater CULs have been used previously by other investigators to evaluate Site

data. Use of Method A Groundwater CULs is based on the assumption that groundwater at the Site is

potable and will be used as a drinking water source. Potable groundwater is defined under WAC 173-

340-720(2) as being a source or potential source for drinking water and/or a beneficial use. An alternative

groundwater CUL would be more appropriate than Method A CULs, since (1) groundwater at the Site

does not serve as a current drinking water source; (2) groundwater yield at the Site is not sufficient to



3-3

satisfy the well construction requirements in WAC 173-160-161(3), and; (3) the Site is proximate to

surface water that is not suitable as a domestic water supply (WAC 173-340-720(2)(d)) (Puget Sound).

However, groundwater constituent concentrations were compared to the default Method A CULs to

complete a preliminary evaluation.

Table 3-4 presents groundwater data collected at the Site compared to MTCA Method A Groundwater

CULs. Samples which detected constituents above MTCA Method A Groundwater CULs are highlighted

in yellow. Benzene, diesel, gasoline, and heavy oil were detected in at least one sample at concentrations

exceeding MTCA Method A Groundwater CULs. Barium, chromium, ethylbenzene, lead, toluene, and

xylenes were detected in groundwater but, at concentrations less than Method A CULs.

Site activities conducted to address MTCA Method A Groundwater CUL exceedances are described in

Section 4.

3.4 Exclusion from Terrestrial Ecological Evaluation

The Terrestrial Ecological Evaluation (TEE) process is not applicable since there is not at least 1.5 acres

of contiguous undeveloped land (suitable habitat) within 500 feet of the Site and no constituents listed on

the hazardous substances listed in WAC 173-340-7491(1)(c)(ii) are present. The TEE Primary Exclusion

Evaluation form is presented in Appendix C and described below.

As shown in Figure 3-3, the Site is located in a well-developed residential area of Fox Island. Small,

isolated, undeveloped land parcels are present within 500 feet of the Site. However, the small, isolated,

undeveloped land parcels are not contiguous and total less than 1.5 acres satisfying part 1 of Exclusion #3

as described in WAC 173-340-7491(1)(c)(i).

Cleanup Sites in Ecology's Facility/Site database were queried to locate adjacent Sites which may have

contaminants present on the Hazardous Substances list. The closest Site was approximately 1,000 feet

from the subject Site, outside of the 500 foot buffer. Constituents present on the Hazardous Substances

list are not within 500 feet of the Site and satisfy part 2 of Exclusion #3.

B4

B3

B2

B1

S9S8

S7

S6

S5

S4S3

S2

S1

B2B1

S12

S11

S10

TP4

TP3

TP2TP1

MW3

MW1MW2

GP6

GP5

GP4

GP3

GP2

GP1

S-2

TP-3

TP-2

S-1

PROJECT:

FIGURE NO.:

DWN:

DATE:




0 2010Feet

June 2012

Soil Sample LocationsFox Island Former Underground Storage Tank Site VCP# SW1022


SM


Soil Sample LocationsLangseth 2001Golder 2005EMS 2005EMS 2009PIONEER 2012


Fox Island

Nisqually

Notes:EMS: Environmental Management ServicesGolder: Golder AssociatesLangseth: Langseth Environmental ServicesPIONEER: PIONEER Technologies Corporation

Sample locations and excavation boundaries are approximate. PIONEER 2012 samples werelocated using a GPS.

Location data was unavailable or insufficient for the 1992 Don Golden Co UST removal soil samples (Sample #1 through Sample #7), and the 2004 Environmental Tank Service hydraulic hoist removal soil sample (S1-Hyd-2.0'). Therefore, they are notincluded on this figure.

Barker Property


Tacoma

Fox Drive FI

B4B3

B2

B1

TP4

TP1

GP4

GP3

GP2

MW-4

MW-3

MW-2

MW3

MW1 MW2B

PROJECT:

FIGURE NO.:

DWN:

DATE:




0 5025 Feet

June 2012

Groundwater Sample LocationsFox Island Former Underground Storage Tank Site VCP# SW1022


SM


Groundwater Sample LocationsLangseth 2001Golder 2005EMS 2005

Monitoring WellsGolder 2005, PIONEER 2012EMS 2007, 2010


Fox Island

Nisqually

Notes:EMS: Environmental Management ServicesGolder: Golder AssociatesLangseth: Langseth Environmental ServicesPIONEER: PIONEER Technologies Corporation

Sample locations and excavation boundaries are approximate. PIONEER 2012 samples werelocated using a GPS.

Location data was unavailable or insufficient for the 2004 Environmental Tank Service hydraulic hoist removal groundwater sample (S2-SW). Therefore,it is not included on this figure.

Barker Property


Tacoma

Fox Drive FI

GroundwaterFlow Direction

Puget Sound

0.4 Acres

0.2 Acres

0.1 Acres

PROJECT:

FIGURE NO.:

DWN:

DATE:




0 200100Feet

June 2012

Terrestrial Ecological Evaluation Exclusion #3 DetailFox Island Former Underground Storage Tank Site VCP# SW1022


SM

LegendBarker Property Boundary500 Ft BufferUndeveloped Land

Fox Island

Nisqually

Notes:

Terrestrial Ecological Evaluation Exclusion #3criteria is described in WAC 173-340-7491(1)(c).

BarkerProperty


Tacoma

Fox Drive FI

500 ft Buffer

Nearest cleanup site: 1,000 ft south

Table 3-1: Satistical Summary of Soil Data Collected at the Fox Island Former UST Site

Constituent

Number of

Samples

Number of

Detects

Frequency of

Detection

(%)

Minimum

Detect

(mg/kg)

Maximum

Detect

(mg/kg)

Benzene 42 6 14% 0.026 1.4

Diesel 39 4 10% 31 190

Ethylbenzene 42 9 21% 0.053 4.1

Gasoline 53 11 21% 6.0 605

Heavy Oil 39 5 13% 120 190

Lead 9 7 78% 1.5 6.5

Methyl tert-butyl ether 2 0 0% -- --

Mineral Oil 2 0 0% -- --

Toluene 42 8 19% 0.080 9.1

Xylenes (Total) 42 10 24% 0.050 9.5

Notes:

--: No Value

mg/kg: milligrams per kilogram


Page 1 of 1


Metals

Gasoline

(mg/kg)

Diesel

(mg/kg)

Heavy Oil

(mg/kg)

Mineral Oil

(mg/kg)

Benzene

(mg/kg)

Toluene

(mg/kg)

Ethylbenzene

(mg/kg)

Xylenes

(Total)

(mg/kg)

Methyl tert-

butyl ether

(mg/kg)

Lead

(mg/kg)

Sample #1 8 Characterization N/A 23 -- -- -- 0.050 U 0.24 0.18 0.92 -- 1.6

Sample #2 6 Characterization N/A 1.0 U -- -- -- 0.050 U 0.050 U 0.050 U 0.050 U -- 4.7




Sample #6 7 Characterization N/A 160 E -- -- -- 0.050 U 0.19 0.050 U 0.64 -- 6.5

Sample #7 0 Soil Stockpile N/A 380 E -- -- -- 0.050 U 0.21 0.25 0.74 -- 4.4

TP1 @ 2'-3' 2-3 Characterization B1 20 25 U 100 U -- 0.050 U 0.080 0.050 U 0.050 U 0.050 U --

TP2 @ 2'-3' 2-3 Characterization B2 10 U 20 U 40 U 40 U 0.020 U 0.050 U 0.050 U 0.050 U -- --

TP3 @ 9' 9 Characterization B3 6.0 -- -- -- 0.050 U 0.050 U 0.050 U 0.050 U 0.050 U 4.0 U

TP4 @ 4' 4 Characterization B4 10 U 20 U 40 U 40 U 0.020 U 0.050 U 0.050 U 0.050 U -- 5.0 U

S1-Hyd-2.0' 2 Characterization N/A -- -- -- -- -- -- -- --

MW1S1 3 Characterization MW1 16 31 120 -- 0.026 0.050 U 0.053 0.050 -- --

MW1S2 5-6.5 Characterization MW1 14 30 U 120 -- 0.032 0.048 U 0.12 0.17 -- --

MW1S3 6.5-8 Characterization MW1 5.6 U 34 58 U -- 0.020 U 0.056 U 0.056 U 0.056 U -- --

B2S2 6.5-8 Characterization B2 5.6 U 29 U 58 U -- 0.020 U 0.056 U 0.056 U 0.056 U -- --



B1S10 14 Characterization B1 5.6 U 30 U 60 U -- 0.020 U 0.056 U 0.056 U 0.056 U -- --

MW2S5 10-11.5 Characterization MW2 4.8 U 28 U 55 U -- 0.020 U 0.048 U 0.048 U 0.048 U -- --

MW3S13 19-20.5 Characterization MW3 6.3 U 29 U 59 U -- 0.020 U 0.055 U 0.055 U 0.055 U -- --

GP1S2 4-7 Characterization GP1 23 U 58 U 120 U -- -- -- -- -- -- --


GP2S4 12-14.5 Characterization GP2 24 U 60 U 120 U -- -- -- -- -- -- --

GP3S2 4.5-5 Characterization GP3 26 U 120 240 -- -- -- -- -- -- --


GP4S3 4-6 Characterization GP4 5.3 U 29 U 59 U -- 0.020 U 0.053 U 0.053 U 0.053 U -- --


GP5S1 0.5-1.5 Characterization GP5 23 U 28 U 160 -- -- -- -- -- -- --


GP5S4 8-9 Characterization GP5 5.7 U -- -- -- 0.020 U 0.057 U 0.057 U 0.057 U -- --

GP5S5 9-10 Characterization GP5 5.6 U -- -- -- 0.020 U 0.056 U 0.056 U 0.069 -- --

GP6S1 0.5-2.5 Characterization GP6 23 U 58 U 120 U -- -- -- -- -- -- --GP6S3 4-5 Characterization GP6 5.5 U -- -- -- 0.020 U 0.055 U 0.055 U 0.055 U -- --

TP1-12-18 1-1.5 Characterization TP1 20 U 50 U 100 U -- -- -- -- -- -- --

TP2-24-30 2-2.5 Characterization TP2 20 U 50 U 100 U -- -- -- -- -- -- --

TP2-48-50 4-4.25 Characterization TP2 605 50 U 100 U -- 0.61 9.1 4.1 9.5 -- --

TP3-24-30 2-2.5 Characterization TP3 568 50 U 100 U -- 1.4 6.0 3.2 7.1 -- --

TP3-70 6 Characterization TP3 20 U 50 U 100 U -- -- -- -- -- -- --

TP4-40 3.25 Characterization TP4 20 U 50 U 100 U -- -- -- -- -- -- --

2001

Langseth Environmental

Petroleum Hydrocarbons

190

2005

Golder Associates Pierce

County ROW Subsurface

Investigation

2005

EMS Subsurface Test Pit

Investigation

Sample IDReport Sample Type

Sample

Depth

(ft bgs)

2004

Environmental Tank Service

Soil removal associated with hydraulic lift removal(1)

1992

Don Golden Co UST Removal

Soil removal associated with UST removal(1)

Volatile Organic Compounds

Map ID


Page 1 of 2


Metals

Gasoline

(mg/kg)

Diesel

(mg/kg)

Heavy Oil

(mg/kg)

Mineral Oil

(mg/kg)

Benzene

(mg/kg)

Toluene

(mg/kg)

Ethylbenzene

(mg/kg)

Xylenes

(Total)

(mg/kg)

Methyl tert-

butyl ether

(mg/kg)

Lead

(mg/kg)

Petroleum Hydrocarbons

Sample IDReport Sample Type

Sample

Depth

(ft bgs)

1992

Don Golden Co UST Removal

Soil removal associated with UST removal(1)

Volatile Organic Compounds

Map ID

S1 4.5 Post Ex-Confirmation S1 94 50 U 250 U -- 0.090 0.65 1.0 4.9 -- --

S2 6-7 Post Ex-Confirmation S2 15 50 U 250 U -- 0.060 0.24 0.56 0.64 -- --

S3 3-4 Post Ex-Confirmation S3 2.0 U 50 U 250 U -- 0.020 U 0.020 U 0.020 U 0.060 U -- --

S4 4.5-5.5 Post Ex-Confirmation S4 2.0 U 50 U 250 U -- 0.020 U 0.020 U 0.020 U 0.060 U -- --







S11 7-8 Post Ex-Confirmation S11 -- -- -- -- 0.020 U 0.020 U 0.030 0.060 U -- --

S12 7-8 Post Ex-Confirmation S12 -- -- -- -- 0.020 U 0.020 U 0.020 U 0.060 U -- --

TP-2 4.25 Post Ex-Confirmation TP-2 6.4 U -- -- -- 0.0031 U 0.0031 U 0.0031 U 0.0092 U -- --

TP-3 2.5 Post Ex-Confirmation TP-3 4.9 U -- -- -- 0.0027 U 0.0027 U 0.0027 U 0.0082 U -- --

S-1 5 Post Ex-Confirmation S-1 6.0 U -- -- -- 0.0029 U 0.0029 U 0.0029 U 0.0087 U -- --

S-2 7.5 Post Ex-Confirmation S-2 6.1 U -- -- -- 0.0030 U 0.0030 U 0.0030 U 0.0091 U -- --

30/100 2,000 2,000 4,000 0.03 7 6 9 0.1 250

Yes No No No Yes Yes No Yes No No

Notes:

: Analyte was detected and is below MTCA Method A Soil Cleanup Level

: Analyte was detected and is above MTCA Method A Soil Cleanup Level

: Soil and/or groundwater removal event

--: Sample was not analzyed for this analyte

ft bgs: feet below ground surface

mg/kg: miligrams per kilogram

N/A: Analytical report and/or sample map not available for review.

ROW: Right-of-way

U: Analyte was non-detect in sample

All results are presented as two significant figures, unless result is greater than 100

(3): From Washington Administrative Code (WAC) 173-340-740

(1): It is unclear whether or not soil removal events were conducted during these two reports, although it is possible.

MTCA Method A Soil Cleanup Level(2)

2012

PIONEER Subsurface

Characterization

2009

EMS Subsurface Test Pit

Investigation

2006 EMS Soil Excavation and Groundwater Removal Event - 212 tons of petroleum-containing soil excavated and removed from northwest corner of site. 500 gallons of groundwater pumped and removed.

2009 EMS Follow-up Soil Excavation and Removal Event - To address the exceedances in samples S1 and S2, 20 cubic yards of soil was removed. Samples S11 and S12 were collected from the follow-up

soil excavation sidewalls.

Is Maximum Detect Above MTCA Method A Soil Cleanup Level?


Page 2 of 2

Table 3-3: Satistical Summary of Groundwater Data Collected at the Fox Island Former UST Site

Constituent

Number of

Samples

Number of

Detects

Frequency of

Detection

(%)

Minimum Detect

(µg/L)

Maximum Detect

(µg/L)

Arsenic 1 0 0% -- --

Barium 1 1 100% 0.096 0.096

Benzene 22 4 18% 6.2 60

Cadmium 1 0 0% -- --

Chromium 1 1 100% 0.030 0.030

Diesel 20 7 35% 71 11,000

Ethylbenzene 22 3 14% 3.8 190

Ethylene dibromide 4 0 0% -- --

Ethylene dichloride 4 0 0% -- --

Gasoline 24 5 21% 93 6,900

Heavy Oil 14 1 7% 11,000 11,000

Lead 8 3 38% 0.0025 0.032

Mercury 1 0 0% -- --

Methyl tert-butyl ether 4 0 0% -- --

Mineral Oil 7 0 0% -- --

Selenium 1 0 0% -- --

Silver 1 0 0% -- --

Toluene 22 4 18% 1.2 53

Xylenes (Total) 22 3 14% 10.0 600

Notes:

--: No Value

µg/L: micrograms per liter


Page 1 of 1

Table 3-4: Groundwater Data Collected at the Fox Island Former UST Site

Gasoline

(µg/L)

Diesel

(µg/L)

Heavy Oil

(µg/L)

Mineral Oil

(µg/L)

Benzene

(µg/L)

Toluene

(µg/L)

Ethyl

benzene

(µg/L)

Xylenes

(Total)

(µg/L)

Methyl tert-

butyl ether

(µg/L)

Ethylene

dichloride

(µg/L)

Ethylene

dibromide

(µg/L)

Lead

(µg/L)

Arsenic

(µg/L)

Cadmium

(µg/L)

Mercury

(µg/L)

Barium

(µg/L)

Chromium

(µg/L)

Selenium

(µg/L)

Silver

(µg/L)

[email protected]'(2)

Test Pit B1 100 U 200 U 400 U 400 U 1.0 U 11 1.0 U 1.0 U -- -- -- 0.00050 U -- -- -- -- -- -- --

[email protected]' Test Pit B2 100 U 200 U 400 U 400 U 1.0 U 1.0 U 1.0 U 1.0 U -- -- -- 0.0044 0.0050 U 0.0010 U 0.00020 U 0.096 0.030 0.050 U 0.05 U

[email protected]' Test Pit B3 100 U -- -- -- 1.0 U 1.0 U 1.0 U 1.0 U -- -- -- 0.032 -- -- -- -- -- -- --

TP4-GW@4' Test Pit B4 6,400 -- -- -- 60 53 190 600 -- -- -- 0.0025 -- -- -- -- -- -- --

S2-SW Test Pit N/A -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

MW1GW1(2)

Monitoring Well MW1 2,950 260 U 410 U -- 6.2 6.4 41 85 0.20 U 0.20 U 0.0095 U 1.0 U -- -- -- -- -- -- --

MW2GW1 Monitoring Well MW2B 100 U 260 U 410 U -- 1.0 U 1.0 U 1.0 U 1.0 U -- -- -- -- -- -- -- -- -- -- --

MW3GW1 Monitoring Well MW3 100 U 260 U 410 U -- 1.0 U 1.0 U 1.0 U 1.0 U -- -- -- -- -- -- -- -- -- -- --

GP2GW1 Direct-Push GP2 100 U 250 U 400 U -- 1.0 U 1.0 U 1.0 U 1.0 U -- -- -- -- -- -- -- -- -- -- --

GP3GW1 Direct-Push GP3 100 U 250 U 400 U -- 1.0 U 1.0 U 1.0 U 1.0 U - -- -- -- -- -- -- -- -- -- --

GP4GW1 Direct-Push GP4 100 U 260 U 410 U -- 1.0 U 1.0 U 1.0 U 1.0 U -- -- -- -- -- -- -- -- -- -- --

TP1-W Test Pit TP1 200 U 200 U 400 U 400 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

TP4-W Test Pit TP4 200 U 6,240 40 U 40 U -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

MW-2 Monitoring Well MW-2 N/A 630 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A

MW-3 Monitoring Well MW-3 6,900 1,300 N/A N/A 58 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A



MW-3 Monitoring Well MW-3 93 760 N/A N/A 13 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A

MW-4 Monitoring Well MW-4 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A

MW-2 Monitoring Well MW-2 50 U 50 U 100 U 50 U 1.0 U 1.0 U 1.0 U 2.0 U -- -- -- -- -- -- -- -- -- -- --



FI_MW1 Monitoring Well MW1 410 -- -- -- 1.0 U 1.2 3.8 10 1.0 U 1.0 U 0.0098 U 10 U -- -- -- -- -- -- --

FI_MW2B Monitoring Well MW2B 50 U -- -- -- 1.0 U 1.0 U 1.0 U 3.0 U 1.0 U 1.0 U 0.0099 U 10 U -- -- -- -- -- -- --

FI_MW3 Monitoring Well MW3 50 U -- -- -- 1.0 U 1.0 U 1.0 U 3.0 U 1.0 U 1.0 U 0.0097 U 10 U -- -- -- -- -- -- --

800/1,000 500 500 500 5 1,000 700 1,000 20 5 0.01 15 5 5 2 No Value 50 No Value No Value

Yes Yes Yes No Yes No No No No No No No No No No No No No No

Notes:

: Analyte was detected and is below MTCA Method A Groundwater Cleanup Level

: Analyte was detected and is above MTCA Method A Groundwater Cleanup Level

: Soil and/or groundwater removal event

--: Sample was not analzyed for this analyte

N/A: Analytical report and/or sample map not available for review.

ROW: Right-of-way

µg/L: micrograms per liter

U: Analyte was non-detect in sample

All results are presented as two significant figures, unless result is greater than 100

(4): From Washington Administrative Code (WAC) 173-340-720

(2): A field duplicate was collected for this sample. Results shown for this sample are a combination of the sample and the field duplicate. If both samples were non-detect, the lower reporting limit is shown. If one sample was detected, detected value is

shown. If both samples were detected, the average is shown.

2007 - Jan

EMS Groundwater

Monitoring Event(3)

2007 - Nov

EMS Groundwater

Monitoring Event(3)

(3): Data from the January and November 2007 EMS groundwater monitoring events is only presented in the text of the November 2010 EMS groundwater monitoring event report (EMS 2010). All values presented in the 2010 report are also presented in

this table. The report also states that all other analytes analzyed were non-detect below the laboratory's reporting limits, although it unknown which analytes were analyzed.

2010

EMS Groundwater

Monitoring Event

(1): It is unclear whether or not soil removal events were conducted during these two reports, although it is possible.

MTCA Method A Groundwater Cleanup Level(4)

2012

PIONEER GW

Monitoring Event

2009 EMS Follow-up Soil Excavation and Removal Event - To address the exceedances in samples S1 and S2, 20 cubic yards of soil was removed. Samples S11 and S12 were collected from the follow-up soil excavation sidewalls.

Is Maximum Detect Above MTCA Method A Groundwater Cleanup

Level?

2001

Langseth

Environmental

Soil removal associated with 1992 UST removal(1)

2004

Environmental Tank

Service

Soil removal associated with hydraulic lift removal(1)

2006 EMS Soil Excavation and Groundwater Removal Event - 212 tons of petroleum-containing soil excavated and removed from northwest corner of site. 500 gallons of groundwater pumped and removed.

11,000

2005

Golder Associates

Pierce County ROW

Subsurface

Investigation

2005

EMS Subsurface

Test Pit Investigation

Metals

Report Sample ID

Petroleum Hydrocarbons Volatile Organic Compounds

Sample Type Map ID


Page 1 of 1


JUNE 2012 SECTION 4 – SOIL AND GROUNDWATER REMEDIATION

4-1

SECTION 4 – SOIL AND GROUNDWATER REMEDIATION

4.1 Soil Remediation

MTCA Method A Soil CUL exceedances were observed at the Site. Four separate remedial actions were

undertaken to address these locations.

4.1.1 Don Golden UST Removal, 1992

Don Golden removed two USTs from the site in 1992. The larger 1,000 gallon tank was located in the

northwest corner of the Site and was suspected to contain gasoline. The smaller 550 gallon tank was

located near the former service station building, southeast of the 1,000 gallon tank. It was suspected to

contain heating or waste oil. Soil may have been removed with the tanks, although the amount is

unknown.

4.1.2 Environmental Tank Service Hydraulic Hoist Removal, 2004

ETS removed the hydraulic hoist and an associated hydraulic fluid UST from the northwest corner of the

Site. Soil may have been removed with the tanks, although the amount is unknown.

4.1.3 Environmental Management Services, 2006

EMS excavated and removed 212 tons of PCS from the northwest corner of the Site in 2006. This

excavation was designed to address impacted soils in the area where the 1,000 gallon gasoline UST and

hydraulic fluid UST were located. A 500-gallon UST was unexpectedly encountered and removed from

the excavation. Soil samples TP2 and TP3 (EMS 2005) had constituent concentrations above MTCA

Method A Soil CULs and were removed during this 2006 excavation work. Soils were transported off-

Site to Land Recovery, Inc. In 2012, confirmation samples were collected at locations TP2 and TP3 and

constituents were not detected confirming the adequacy of the soil removal activities.

4.1.4 Environmental Management Services, 2009

EMS conducted a sampling event in 2009 to confirm the effectiveness of the 2006 excavation and

removal action in the northwest corner of the Site. All samples collected from the perimeter of, and

within, the excavation boundary were below MTCA Method A Soil CULs, except for samples S1 and S2.

The area around samples S1 and S2 was over-excavated and the resulting 20 cubic yards of PCS was

transported off-Site to Land Recovery, Inc. Confirmation samples collected from the excavation

sidewalls were below MTCA Method A Soil CULS. In 2012, additional confirmation samples were

collected at locations S1 and S2 and constituents were not detected further confirming the adequacy of the

soil removal activities.

4.2 Groundwater Remediation

MTCA Method A Groundwater exceedances were observed in groundwater at the site. One remedial

action was undertaken by EMS to address groundwater at the Site. EMS informed Ecology that


JUNE 2012 SECTION 4 – SOIL AND GROUNDWATER REMEDIATION

4-2

approximately 500 gallons of contaminated groundwater was pumped from the northwest corner of the

Site in 2006 (See Section 2). It is expected that further information regarding this event is contained

within the 2006 EMS report.


JUNE 2012 SECTION 5 – CONCLUSIONS

5-1

SECTION 5 – CONCLUSIONS

The Site has been adequately characterized based on soil and groundwater data collected over the past

twenty years (1992 through 2012) (See Sections 2 and 3). Releases of constituents to soil occurred within

the northwestern corner of the Site, in the area where the four USTs were formerly located. Detected soil

and groundwater concentrations were greater than MTCA Method A CULs.

5.1 Soil

Detected soil constituents have historically exceeded MTCA Method A Soil CULs for benzene, gasoline,

toluene, and xylenes. These exceedances have been addressed by soil removal events conducted by EMS

in 2006 and 2009. In addition, possible soil removal actions occurred during the 1992 Don Golden UST

removal and the 2004 ETS hydraulic hoist removal. Post-excavation samples collected by EMS and

PIONEER demonstrate that residual concentrations are less than MTCA Method A Soil CULs.

Therefore, no further action is needed for soils at the Site.

5.2 Groundwater

Detected groundwater constituents have historically exceeded MTCA Method A Groundwater CULs for

benzene, diesel, gasoline, and heavy oil. During the 2006 soil removal event, 500 gallons of constituent-

impacted groundwater was pumped and removed from the Site (Ecology 2008). This event likely resulted

in decreased constituent concentrations in groundwater.

During the most recent groundwater monitoring conducted at the three on-Site groundwater monitoring

wells, constituents sampled were not detected. During the most recent groundwater monitoring

conducted at the three down gradient off-Site groundwater monitoring wells, constituents were detected

only in MW-1, immediately down gradient of the historic soil source area, and all constituent

concentrations were below MTCA Method A Groundwater CULs.

Although Ecology usually requires four quarters of groundwater monitoring before issuing a NFA

opinion for a Site, this Site should qualify for a NFA opinion based on;

1. the 2006 and 2009 soil remediation events which completely addressed the chemical source area;

2. the duration of time that has passed since the 2006 soil remediation event that has allowed natural

attenuation to decrease chemical concentrations;

3. groundwater ingestion is an incomplete exposure pathway at the Site since a drinking water well

could never be installed down gradient of the Site due to the Site's groundwater characteristics

and proximity to Puget Sound; and

4. Site groundwater is likely to be heavily influenced by the predominant surface water body (Puget

Sound) immediately adjacent to the Site, and groundwater flow direction is highly unlikely to

deviate from its observed northeasterly flow direction. Thusly, the most recent groundwater

monitoring events at the on-Site and down gradient wells should suffice for Site groundwater

characterization.


JUNE 2012 SECTION 6 – REFERENCES

6-1

SECTION 6 – REFERENCES

Environmental Management Services, Inc. 2005. Subsurface Investigation. Project Location: 601 9th

Avenue Fox Island, WA 98333. November.

Environmental Management Services, Inc. 2009. Subsurface Investigation. 612 9th Avenue FI Fox

Island, Washington 98333. March.

Environmental Management Services, Inc. 2010. Ground Water Monitoring Report. Woodward-Diaz

Property 601 9th Avenue Fox Island, Washington. November.

Environmental Tank Service, Inc. 2004. Soil and Groundwater Analytical Results 614 9th Avenue, Fox

Island, WA 98333. April.

Golder Associates. 2005. Final Report - Environmental Investigation Report Fox Island Site. (Pierce

County Easement on the Former Forsbeck Property). Parcel No. 0120016007. May.

Langseth Environmental Servies, Inc. 2001. Phase II Site Investigation Report Soil Boring & Sampling

Project. November.

Sound Analytical Services, Inc. 1992. Project #2-113 Carl Forsbeck. Report On Analysis of Seven Soil

Samples. December.

PIONEER Technologies Corporation. 2012. Soil and Groundwater Sampling Investigation Results. 612

9th Avenue FI Fox Island WA. April.

Washington State Department of Ecology. 2007. Model Toxics Control Act Statute and Regulation.

Publication No. 94-06. November.

Washington State Department of Ecology. 2008. Environmental Report Tracking System # 549848.

ERTS S549848, Forsbeck/Woodard Property Chronology. April.

Washington State Department of Ecology. 2012. Cleanup Levels and Risk Calculation Database.

Queried May 18th 2012.

Appendix A

Fox Island Former UST SiteFox Island, WA

LOG OF TEST PIT S-1

Date Started : 3/29/12

Date Completed : 3/29/12

Method : Track Mount Excavator

Sampling Method : Grab

Logged By : S. Munson

Organization : PIONEER

Northing Coord. : 708856.257037

Easting Coord. : 1113683.34701

De

pth

in

Fe

et

0

1

2

3

4

5

6

7

8

9

10

DESCRIPTION

SAND - Moist silty sand with trace gravels, light brown to grey

More grey

Total Depth = 5 ft

GR

AP

HIC

Wa

ter

Le

ve

l

% R

eco

ve

ry

100

Sa

mp

le I

nte

rva

l

X

Contacts or GW?

No

Notes

No odors or sheen observed

Sampled for: NWTPH-Gx, BTEX


LOG OF TEST PIT S-2









De

pth

in

Fe

et

0

1

2

3

4

5

6

7

8

9

10

DESCRIPTION

GR

AP

HIC

Wa

ter

Le

ve

l

% R

eco

ve

ry

100

Sa

mp

le I

nte

rva

l

X

Contacts or GW?

No

Notes




More grey

More moist

Total Depth = 7.5 ft


LOG OF TEST PIT TP-2









De

pth

in

Fe

et

0

1

2

3

4

5

6

7

8

9

10

DESCRIPTION

GR

AP

HIC

Wa

ter

Le

ve

l



% R

eco

ve

ry

100S

am

ple

In

terv

al

X

Contacts or GW?

No

Notes




LOG OF TEST PIT TP-3









De

pth

in

Fe

et

0

1

2

3

4

5

6

7

8

9

10

DESCRIPTION

GR

AP

HIC

Wa

ter

Le

ve

l

% R

eco

ve

ry

100

Sa

mp

le I

nte

rva

l

X

Contacts or GW?

No

Notes




Faint yellow/white discoloration


Appendix B

April 18, 2012

LIMS USE: FR - STACY MUNSON

LIMS OBJECT ID: 2511452

2511452

Project:

Pace Project No.:

RE:

Stacy MunsonPioneer Technologies5205 Corporate Ctr. Ct. SE.Ste. ALacey, WA 98503

Fox Island

Dear Stacy Munson:

Enclosed are the analytical results for sample(s) received by the laboratory between March 29, 2012and April 06, 2012. The results relate only to the samples included in this report. Results reportedherein conform to the most current TNI standards and the laboratory's Quality Assurance Manual,where applicable, unless otherwise noted in the body of the report.

If you have any questions concerning this report, please feel free to contact me.

Sincerely,

Karen Jang

[email protected] Manager

Enclosures

cc: Brad Grimstead, Pioneer Technologies

REPORT OF LABORATORY ANALYSISThis report shall not be reproduced, except in full,

without the written consent of Pace Analytical Services, Inc..

Page 1 of 17

Pace Analytical Services, Inc.940 South Harney

Seattle, WA 98108

(206)767-5060

1 of 20

CERTIFICATIONS

Pace Project No.:

Project:

2511452

Fox Island

Washington Certification IDs940 South Harney Street, Seattle, WA 98108Alaska CS Certification #: UST-025Arizona Certification #: AZ0770California Certification #: 01153CA

Florida/NELAP Certification #: E87617Oregon Certification #: WA200007Washington Certification #: C555



Page 2 of 17


Seattle, WA 98108

(206)767-5060

2 of 20

SAMPLE ANALYTE COUNT

Pace Project No.:

Project:

2511452

Fox Island

Lab ID Sample ID MethodAnalytesReported LaboratoryAnalysts

2511452001 FI_S-2_032912 NWTPH-Gx 3 PASI-SCC

EPA 8260 8 PASI-SLPM

ASTM D2974-87 1 PASI-SCMM

2511452002 FI_TP-2_032912 NWTPH-Gx 3 PASI-SCC



2511452003 FI_S-1_032912 NWTPH-Gx 3 PASI-SCC



2511452004 F1_TP-3_032912 NWTPH-Gx 3 PASI-SCC



2511452005 F1_MW3_032912 EPA 8011 2 PASI-SAY1

EPA 5030B/8260 10 PASI-SCC

NWTPH-Gx 2 PASI-SCC

2511452006 F1_MW1_032912 EPA 8011 2 PASI-SAY1


NWTPH-Gx 2 PASI-SCC

2511452007 F1_MW2B_032912 EPA 8011 2 PASI-SAY1


NWTPH-Gx 2 PASI-SCC

2511452008 TRIP BLANK EPA 5030B/8260 10 PASI-SCC

NWTPH-Gx 2 PASI-SCC

2511452009 F1_MW3_040612 EPA 6010 1 PASI-SBGA

2511452010 F1_MW1_040612 EPA 6010 1 PASI-SBGA

2511452011 F1_MW2B_040612 EPA 6010 1 PASI-SBGA



Page 3 of 17


Seattle, WA 98108

(206)767-5060

3 of 20

ANALYTICAL RESULTS

Pace Project No.:

Project:

2511452

Fox Island

Sample: FI_S-2_032912 Lab ID: 2511452001 Collected: 03/29/12 08:15 Received: 03/29/12 16:20 Matrix: Solid

Results reported on a "dry-weight" basis

Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit

NWTPH-Gx GCV Analytical Method: NWTPH-Gx Preparation Method: NWTPH-Gx

Gasoline Range Organics ND mg/kg 1 04/04/12 21:5604/04/12 16:316.1

Surrogatesa,a,a-Trifluorotoluene (S) 131 % 1 04/04/12 21:56 98-08-804/04/12 16:3150-150

4-Bromofluorobenzene (S) 104 % 1 04/04/12 21:56 460-00-404/04/12 16:3150-150

8260/5035A Volatile Organics Analytical Method: EPA 8260

Benzene ND mg/kg 1 04/04/12 15:44 71-43-20.0030

Ethylbenzene ND mg/kg 1 04/04/12 15:44 100-41-40.0030

Toluene ND mg/kg 1 04/04/12 15:44 108-88-30.0030

Xylene (Total) ND mg/kg 1 04/04/12 15:44 1330-20-70.0091

SurrogatesDibromofluoromethane (S) 105 % 1 04/04/12 15:44 1868-53-774-126

Toluene-d8 (S) 92 % 1 04/04/12 15:44 2037-26-571-130

4-Bromofluorobenzene (S) 101 % 1 04/04/12 15:44 460-00-468-141

1,2-Dichloroethane-d4 (S) 110 % 1 04/04/12 15:44 17060-07-068-141

Percent Moisture Analytical Method: ASTM D2974-87

Percent Moisture 20.4 % 1 04/02/12 16:280.10

Sample: FI_TP-2_032912 Lab ID: 2511452002 Collected: 03/29/12 08:25 Received: 03/29/12 16:20 Matrix: Solid








Benzene ND mg/kg 1 04/04/12 18:08 71-43-20.0031


Toluene ND mg/kg 1 04/04/12 18:08 108-88-30.0031



Toluene-d8 (S) 93 % 1 04/04/12 18:08 2037-26-571-130







Date: 04/18/2012 12:30 PM Page 4 of 17


Seattle, WA 98108

(206)767-5060

4 of 20

ANALYTICAL RESULTS

Pace Project No.:

Project:

2511452

Fox Island

Sample: FI_S-1_032912 Lab ID: 2511452003 Collected: 03/29/12 08:35 Received: 03/29/12 16:20 Matrix: Solid








Benzene ND mg/kg 1 04/04/12 18:28 71-43-20.0029


Toluene ND mg/kg 1 04/04/12 18:28 108-88-30.0029



Toluene-d8 (S) 93 % 1 04/04/12 18:28 2037-26-571-130





Sample: F1_TP-3_032912 Lab ID: 2511452004 Collected: 03/29/12 08:45 Received: 03/29/12 16:20 Matrix: Solid








Benzene ND mg/kg 1 04/04/12 18:49 71-43-20.0027


Toluene ND mg/kg 1 04/04/12 18:49 108-88-30.0027



Toluene-d8 (S) 94 % 1 04/04/12 18:49 2037-26-571-130







Date: 04/18/2012 12:30 PM Page 5 of 17


Seattle, WA 98108

(206)767-5060

5 of 20

ANALYTICAL RESULTS

Pace Project No.:

Project:

2511452

Fox Island

Sample: F1_MW3_032912 Lab ID: 2511452005 Collected: 03/29/12 10:00 Received: 03/29/12 16:20 Matrix: Water


8011 GCS EDB and DBCP Analytical Method: EPA 8011 Preparation Method: EPA 8011

1,2-Dibromoethane (EDB) ND mg/L 1 04/05/12 19:09 106-93-404/05/12 17:000.0000097

Surrogates4-Bromofluorobenzene (S) 97 % 1 04/05/12 19:09 460-00-404/05/12 17:0069-145

8260 MSV Analytical Method: EPA 5030B/8260

1,2-Dichloroethane ND mg/L 1 04/03/12 05:00 107-06-20.0010

Benzene ND mg/L 1 04/03/12 05:00 71-43-20.0010

Ethylbenzene ND mg/L 1 04/03/12 05:00 100-41-40.0010

Methyl-tert-butyl ether ND mg/L 1 04/03/12 05:00 1634-04-40.0010

Toluene ND mg/L 1 04/03/12 05:00 108-88-30.0010

Xylene (Total) ND mg/L 1 04/03/12 05:00 1330-20-70.0030

Surrogates4-Bromofluorobenzene (S) 104 % 1 04/03/12 05:00 460-00-479-121

Dibromofluoromethane (S) 114 % 1 04/03/12 05:00 1868-53-781-119


Toluene-d8 (S) 104 % 1 04/03/12 05:00 2037-26-577-120

NWTPH-Gx MSV Analytical Method: NWTPH-Gx

Gasoline Range Organics ND mg/L 1 04/03/12 05:000.050









Benzene ND mg/L 1 04/03/12 05:19 71-43-20.0010

Ethylbenzene 0.0038 mg/L 1 04/03/12 05:19 100-41-40.0010


Toluene 0.0012 mg/L 1 04/03/12 05:19 108-88-30.0010

Xylene (Total) 0.010 mg/L 1 04/03/12 05:19 1330-20-70.0030




Toluene-d8 (S) 105 % 1 04/03/12 05:19 2037-26-577-120


Gasoline Range Organics 0.41 mg/L 1 04/03/12 05:190.050



Date: 04/18/2012 12:30 PM Page 6 of 17


Seattle, WA 98108

(206)767-5060

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ANALYTICAL RESULTS

Pace Project No.:

Project:

2511452

Fox Island





Sample: F1_MW2B_032912 Lab ID: 2511452007 Collected: 03/29/12 12:00 Received: 03/29/12 16:20 Matrix: Water







Benzene ND mg/L 1 04/03/12 05:37 71-43-20.0010



Toluene ND mg/L 1 04/03/12 05:37 108-88-30.0010





Toluene-d8 (S) 105 % 1 04/03/12 05:37 2037-26-577-120




Sample: TRIP BLANK Lab ID: 2511452008 Collected: 03/29/12 12:30 Received: 03/29/12 16:20 Matrix: Water




Benzene ND mg/L 1 04/03/12 04:05 71-43-20.0010



Toluene ND mg/L 1 04/03/12 04:05 108-88-30.0010







Date: 04/18/2012 12:30 PM Page 7 of 17


Seattle, WA 98108

(206)767-5060

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ANALYTICAL RESULTS

Pace Project No.:

Project:

2511452

Fox Island

Sample: TRIP BLANK Lab ID: 2511452008 Collected: 03/29/12 12:30 Received: 03/29/12 16:20 Matrix: Water



SurrogatesToluene-d8 (S) 106 % 1 04/03/12 04:05 2037-26-577-120






6010 MET ICP Analytical Method: EPA 6010 Preparation Method: EPA 3010

Lead ND mg/L 1 04/17/12 14:33 7439-92-104/13/12 10:390.010




Lead ND mg/L 1 04/17/12 14:37 7439-92-104/13/12 10:390.010

Sample: F1_MW2B_040612 Lab ID: 2511452011 Collected: 04/06/12 15:15 Received: 04/06/12 16:13 Matrix: Water



Lead ND mg/L 1 04/17/12 14:41 7439-92-104/13/12 10:390.010



Date: 04/18/2012 12:30 PM Page 8 of 17


Seattle, WA 98108

(206)767-5060

8 of 20

QUALITY CONTROL DATA

Pace Project No.:

Project:

2511452

Fox Island

QC Batch:

QC Batch Method:

Analysis Method:

Analysis Description:

GCV/2732

NWTPH-Gx

NWTPH-Gx

NWTPH-Gx Solid GCV

Associated Lab Samples: 2511452001, 2511452002, 2511452003, 2511452004

Parameter Units

Blank

Result

Reporting

Limit Qualifiers

METHOD BLANK: 109527


Matrix: Solid

Analyzed

Gasoline Range Organics mg/kg ND 5.0 04/04/12 19:09

4-Bromofluorobenzene (S) % 90 50-150 04/04/12 19:09

a,a,a-Trifluorotoluene (S) % 105 50-150 04/04/12 19:09

Parameter Units

LCS

Result

% Rec

Limits Qualifiers% RecConc.

109528LABORATORY CONTROL SAMPLE:

LCSSpike

Gasoline Range Organics mg/kg 10.812.5 86 63-140

4-Bromofluorobenzene (S) % 82 50-150

a,a,a-Trifluorotoluene (S) % 97 50-150

Parameter Units

Dup

Result QualifiersRPDResult

2511462003

109618SAMPLE DUPLICATE:

Gasoline Range Organics mg/kg NDND

4-Bromofluorobenzene (S) % 104 1392

a,a,a-Trifluorotoluene (S) % 134 5127



Date: 04/18/2012 12:30 PM Page 9 of 17


Seattle, WA 98108

(206)767-5060

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Pace Project No.:

Project:

2511452

Fox Island

QC Batch:

QC Batch Method:

Analysis Method:


MPRP/2949

EPA 3010

EPA 6010

6010 MET

Associated Lab Samples: 2511452009, 2511452010, 2511452011

Parameter Units

Blank

Result

Reporting

Limit Qualifiers



Matrix: Water

Analyzed

Lead mg/L ND 0.010 04/17/12 13:32

Parameter Units

LCS

Result

% Rec



LCSSpike

Lead mg/L 0.48.5 95 80-120

Parameter Units

MS

Result

% Rec

Limits Qual% RecConc.

110973MATRIX SPIKE & MATRIX SPIKE DUPLICATE:

MSSpike

Result

2511625001

110974

MSD

Result

MSD

% Rec RPD

MSDMS

Spike

Conc.

Lead mg/L .5 95 75-12594 1.5ND 0.48 0.47



Date: 04/18/2012 12:30 PM Page 10 of 17


Seattle, WA 98108

(206)767-5060

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Pace Project No.:

Project:

2511452

Fox Island

QC Batch:

QC Batch Method:

Analysis Method:


MSV/6725

EPA 5030B/8260

EPA 5030B/8260

8260 MSV Water 10 mL Purge


Parameter Units

Blank

Result

Reporting

Limit Qualifiers



Matrix: Water

Analyzed

1,2-Dichloroethane mg/L ND 0.0010 CU04/03/12 03:46

Benzene mg/L ND 0.0010 04/03/12 03:46

Ethylbenzene mg/L ND 0.0010 04/03/12 03:46

Methyl-tert-butyl ether mg/L ND 0.0010 04/03/12 03:46

Toluene mg/L ND 0.0010 04/03/12 03:46

Xylene (Total) mg/L ND 0.0030 04/03/12 03:46

1,2-Dichloroethane-d4 (S) % 116 72-127 04/03/12 03:46


Dibromofluoromethane (S) % 101 81-119 04/03/12 03:46

Toluene-d8 (S) % 106 77-120 04/03/12 03:46

Parameter Units

LCS

Result

% Rec



LCSSpike

1,2-Dichloroethane mg/L 0.023 CH.02 116 63-131

Benzene mg/L 0.018.02 89 66-123

Ethylbenzene mg/L 0.020.02 101 67-122

Methyl-tert-butyl ether mg/L 0.020.02 101 65-138

Toluene mg/L 0.019.02 93 64-118

Xylene (Total) mg/L 0.061.06 101 68-122

1,2-Dichloroethane-d4 (S) % 120 72-127


Dibromofluoromethane (S) % 114 81-119

Toluene-d8 (S) % 100 77-120

Parameter Units

MS

Result

% Rec



MSSpike

Result

2511469001

109164

MSD

Result

MSD

% Rec RPD

MSDMS

Spike

Conc.

1,2-Dichloroethane mg/L CH,M1.02 146 60-138124 16.02ND 0.029 0.025

Benzene mg/L .02 122 63-138107 14.02ND 0.024 0.021

Ethylbenzene mg/L .02 135 65-135119 12.02ND 0.027 0.024

Methyl-tert-butyl ether mg/L .02 122 59-143106 14.02ND 0.024 0.021

Toluene mg/L .02 127 64-128112 12.02ND 0.025 0.023

Xylene (Total) mg/L M1.06 134 65-133118 13.06ND 0.081 0.071




Toluene-d8 (S) % 102 77-120102



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Seattle, WA 98108

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Pace Project No.:

Project:

2511452

Fox Island

QC Batch:

QC Batch Method:

Analysis Method:


MSV/6729

EPA 8260

EPA 8260

8260 MSV 5035A Volatile Organics


Parameter Units

Blank

Result

Reporting

Limit Qualifiers



Matrix: Solid

Analyzed

Benzene mg/kg ND 0.0030 04/04/12 09:32

Ethylbenzene mg/kg ND 0.0030 04/04/12 09:32

Toluene mg/kg ND 0.0030 04/04/12 09:32

Xylene (Total) mg/kg ND 0.0090 04/04/12 09:32

1,2-Dichloroethane-d4 (S) % 103 68-141 04/04/12 09:32


Dibromofluoromethane (S) % 96 74-126 04/04/12 09:32

Toluene-d8 (S) % 96 71-130 04/04/12 09:32

Parameter Units

LCS

Result

% Rec



LCSSpike

Benzene mg/kg 0.018.02 90 67-133

Ethylbenzene mg/kg 0.020.02 102 70-124

Toluene mg/kg 0.016.02 82 67-129

Xylene (Total) mg/kg 0.062.06 103 68-127




Toluene-d8 (S) % 93 71-130

Parameter Units

MS

Result

% Rec



MSSpike

Result

2511452004

109601

MSD

Result

MSD

% Rec RPD

MSDMS

Spike

Conc.

Benzene mg/kg .02 107 40-14984 28.018ND 0.021 0.016

Ethylbenzene mg/kg .02 118 40-14695 26.018ND 0.023 0.018

Toluene mg/kg .02 91 40-14777 21.018ND 0.018 0.014

Xylene (Total) mg/kg .058 127 40-14297 31.055ND 0.074 0.054



Dibromofluoromethane (S) % IS83 74-12694

Toluene-d8 (S) % 96 71-13099



Date: 04/18/2012 12:30 PM Page 12 of 17


Seattle, WA 98108

(206)767-5060

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Pace Project No.:

Project:

2511452

Fox Island

QC Batch:

QC Batch Method:

Analysis Method:


MSV/6724

NWTPH-Gx

NWTPH-Gx

NWTPH-Gx MSV Water


Parameter Units

Blank

Result

Reporting

Limit Qualifiers



Matrix: Water

Analyzed

Gasoline Range Organics mg/L ND 0.050 04/03/12 03:46


Parameter Units

LCS

Result

% Rec



LCSSpike

Gasoline Range Organics mg/L 0.45.5 90 65-139


Parameter Units

MS

Result

% Rec



MSSpike

Result

2511469001

109160

MSD

Result

MSD

% Rec RPD

MSDMS

Spike

Conc.

Gasoline Range Organics mg/L .5 97 48-14798 1.5ND 0.49 0.49




Date: 04/18/2012 12:30 PM Page 13 of 17


Seattle, WA 98108

(206)767-5060

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Pace Project No.:

Project:

2511452

Fox Island

QC Batch:

QC Batch Method:

Analysis Method:


OEXT/5333

EPA 8011

EPA 8011

GCS 8011 EDB DBCP


Parameter Units

Blank

Result

Reporting

Limit Qualifiers



Matrix: Water

Analyzed

1,2-Dibromoethane (EDB) mg/L ND 0.000010 04/05/12 18:12


Parameter Units

LCS

Result

% Rec



LCSSpike

1,2-Dibromoethane (EDB) mg/L 0.00025.00025 98 68-124


Parameter Units

MS

Result

% Rec



MSSpike

Result

2511452007

109777

MSD

Result

MSD

% Rec RPD

MSDMS

Spike

Conc.

1,2-Dibromoethane (EDB) mg/L .00025 98 62-12998 1.00024ND 0.00024 0.00024




Date: 04/18/2012 12:30 PM Page 14 of 17


Seattle, WA 98108

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Pace Project No.:

Project:

2511452

Fox Island

QC Batch:

QC Batch Method:

Analysis Method:


PMST/2002

ASTM D2974-87

ASTM D2974-87

Dry Weight/Percent Moisture


Parameter Units

Dup

Result QualifiersRPDResult

2511452003

109146SAMPLE DUPLICATE:

Percent Moisture % 15.2 215.0



Date: 04/18/2012 12:30 PM Page 15 of 17


Seattle, WA 98108

(206)767-5060

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QUALIFIERS

Pace Project No.:

Project:

2511452

Fox Island

DEFINITIONS

DF - Dilution Factor, if reported, represents the factor applied to the reported data due to changes in sample preparation, dilution ofthe sample aliquot, or moisture content.

ND - Not Detected at or above adjusted reporting limit.

J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.

MDL - Adjusted Method Detection Limit.

S - Surrogate

1,2-Diphenylhydrazine (8270 listed analyte) decomposes to Azobenzene.

Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.

LCS(D) - Laboratory Control Sample (Duplicate)

MS(D) - Matrix Spike (Duplicate)

DUP - Sample Duplicate

RPD - Relative Percent Difference

NC - Not Calculable.

SG - Silica Gel Clean-Up

N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported foreach analyte is a combined concentration.

Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.

TNI - The NELAC Institute.

LABORATORIES

Pace Analytical Services - SeattlePASI-S

ANALYTE QUALIFIERSThe continuing calibration for this compound is outside of Pace Analytical acceptance limits. The results may be biasedhigh.

CH

The continuing calibration for this compound is outside of Pace Analytical acceptance limits. Analyte presence belowreporting limits in associated samples. Results unaffected by high bias.

CU

The internal standard response is below criteria. Results may be biased high.IS

Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1



Date: 04/18/2012 12:30 PM Page 16 of 17


Seattle, WA 98108

(206)767-5060

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QUALITY CONTROL DATA CROSS REFERENCE TABLE

Pace Project No.:

Project:

2511452

Fox Island

Lab ID Sample ID QC Batch Method QC Batch Analytical MethodAnalyticalBatch

2511452005 OEXT/5333 GCSV/3443F1_MW3_032912 EPA 8011 EPA 8011

2511452006 OEXT/5333 GCSV/3443F1_MW1_032912 EPA 8011 EPA 8011

2511452007 OEXT/5333 GCSV/3443F1_MW2B_032912 EPA 8011 EPA 8011

2511452001 GCV/2732 GCV/2733FI_S-2_032912 NWTPH-Gx NWTPH-Gx

2511452002 GCV/2732 GCV/2733FI_TP-2_032912 NWTPH-Gx NWTPH-Gx

2511452003 GCV/2732 GCV/2733FI_S-1_032912 NWTPH-Gx NWTPH-Gx

2511452004 GCV/2732 GCV/2733F1_TP-3_032912 NWTPH-Gx NWTPH-Gx

2511452009 MPRP/2949 ICP/2759F1_MW3_040612 EPA 3010 EPA 6010

2511452010 MPRP/2949 ICP/2759F1_MW1_040612 EPA 3010 EPA 6010

2511452011 MPRP/2949 ICP/2759F1_MW2B_040612 EPA 3010 EPA 6010

2511452005 MSV/6725F1_MW3_032912 EPA 5030B/8260

2511452006 MSV/6725F1_MW1_032912 EPA 5030B/8260

2511452007 MSV/6725F1_MW2B_032912 EPA 5030B/8260

2511452008 MSV/6725TRIP BLANK EPA 5030B/8260

2511452001 MSV/6729FI_S-2_032912 EPA 8260

2511452002 MSV/6729FI_TP-2_032912 EPA 8260

2511452003 MSV/6729FI_S-1_032912 EPA 8260

2511452004 MSV/6729F1_TP-3_032912 EPA 8260

2511452005 MSV/6724F1_MW3_032912 NWTPH-Gx

2511452006 MSV/6724F1_MW1_032912 NWTPH-Gx

2511452007 MSV/6724F1_MW2B_032912 NWTPH-Gx

2511452008 MSV/6724TRIP BLANK NWTPH-Gx

2511452001 PMST/2002FI_S-2_032912 ASTM D2974-87

2511452002 PMST/2002FI_TP-2_032912 ASTM D2974-87

2511452003 PMST/2002FI_S-1_032912 ASTM D2974-87

2511452004 PMST/2002F1_TP-3_032912 ASTM D2974-87



Date: 04/18/2012 12:30 PM Page 17 of 17


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Appendix C

fox island former underground storage tank site vcp# sw1022

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