underground storage tank system replacement report

Underground Storage TankSystem Replacement Report

7-Eleven Store No. 23020

1522 East Madison Street

Seattle, Washington

Cleanup Site ID No.: 6488

Facility/Site No.: 66434231

VCP No. NW1911

Prepared for:

7-Eleven Inc.

P.O. Box 711

Dallas, TX 75221-0711

Prepared by:

Stantec Consulting Services Inc.

11130 NE 33rd Place, Suite 200

Bellevue, Washington 98004

May 30, 2014

UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT

TABLE OF CONTENTS

i

Table of Contents

ABBREVIATIONS......................................................................................................................... I

1.0 INTRODUCTION ...........................................................................................................1.1

1.1 PURPOSE AND SCOPE OF WORK ................................................................................. 1.1

1.2 SITE BACKGROUND........................................................................................................ 1.2

1.3 REGULATORY STATUS ..................................................................................................... 1.3

2.0 FACILITY DESCRIPTION................................................................................................2.1

2.1 SITE LOCATION ............................................................................................................... 2.1

2.2 SITE DESCRIPTION ........................................................................................................... 2.1

2.3 SURROUNDING LAND USE ............................................................................................. 2.1

2.4 REGIONAL GEOLOGY ................................................................................................... 2.1

2.5 REGIONAL HYDROGEOLOGY....................................................................................... 2.1

3.0 FIELD ACTIVITIES ..........................................................................................................3.2

3.1 WELL DECOMMISSIONING ACTIVITIES ......................................................................... 3.2

3.2 GROUNDWATER MONITORING AND SAMPLING ACTIVITIES..................................... 3.23.2.1 Groundwater Flow Direction and Gradient ............................................ 3.23.2.2 Groundwater Analytical Methods ............................................................ 3.23.2.3 Groundwater Analytical Results ................................................................ 3.3

3.3 UST REMOVAL ACTIVITIES .............................................................................................. 3.3

3.4 FIELD SCREENING AND SOIL SAMPLING ACTIVITIES ................................................... 3.43.4.1 Field Screening............................................................................................. 3.43.4.2 Soil Sampling Activities................................................................................ 3.43.4.3 Soil Analytical Methods .............................................................................. 3.53.4.4 Soil Analytical Results .................................................................................. 3.5

3.5 UST INSTALLATION ACTIVITIES ........................................................................................ 3.6

3.6 SOIL BACKFILLING .......................................................................................................... 3.6

4.0 REMEDIAL ACTIONS ....................................................................................................4.1

4.1 EXCAVATION AND SOIL DISPOSAL .............................................................................. 4.1

5.0 SUMMARY AND CONCLUSIONS.................................................................................5.2

6.0 REFERENCES.................................................................................................................6.1


TABLE OF CONTENTS

ii

LIST OF TABLES

Table 1A Soil Analytical Results

Table 1B Additional Soil Analytical Results

Table 2 Groundwater Monitoring and Analytical Results

LIST OF FIGURES

Figure 1 Site Location Map

Figure 2 Site Plan with Soil Analytical Results, March 2014

Figure 3 Site Plan with New Tank Configuration

Figure 4 Groundwater Elevation Contour Map – February 24-25, 2014

Figure 5 Groundwater Analytical Results – February 24-25, 2014

LIST OF APPENDICES

Appendix A Stantec Monitoring Well Purging and Sampling Procedures

Appendix B Groundwater Monitoring Field Notes

Appendix C Laboratory Reports and Chain-of-Custody Documentation

Appendix D Department of Ecology UST Notices and Checklists

Appendix E Waste Documentation


TABLE OF CONTENTS

i

Abbreviations

7-Eleven

bgs

BTEX

Cascade

COC

CUL

DNS

DPE

DPS

Ecology

EDB

EDC

EPA

ESN

ERTS

ft/ft

Fremont

GTI

HASP

ID

lbs./day

LUST

MSL

MTBE

MTCA

MW

NWTPH-Dx

NWTPH-Gx

ORPH

PID

PL

ppm

Sabyr

SEPA

SP

SS

Stantec

SV

7-Eleven, Inc.

Below ground surface

Benzene, toluene, ethyl benzene, and total xylenes

Cascade Drilling Inc.

Chain-of-Custody

Cleanup Level

Determination of Non-Significance

Dual Phase Extraction

Dispenser – south location

Washington State Department of Ecology

1,2-Dibromoethane

1,2-Dichloroethane

Environmental Protection Agency

Environmental Services Network Northwest

Environmental Report Tracking System

Vertical Feet per Horizontal Foot

Fremont Analytical, Inc. Laboratory

Groundwater Technology, Inc.

Health and Safety Plan

Identification

Pounds per Day

Leaking Underground Storage Tank

Mean Sea Level

Methyl tertiary butyl ether

Model Toxics Control Act

Monitoring Well

Northwest Total Petroleum Hydrocarbons as Diesel

Northwest Total Petroleum Hydrocarbons as Gasoline

1,500-gallon Orphan UST

Photoionization detector

Product Line

Parts Per Million

Sabyr Contractors Inc.

Washington State Environmental Policy Act

Stockpile

Soil Sample

Stantec Consulting Services Inc.

Soil Vapor


TABLE OF CONTENTS

ii

TOC

TPH-D

TPH-G

TPH-O

UST

VCP

WAC

Top of Casing

Total petroleum hydrocarbons as diesel

Total petroleum hydrocarbons as gasoline

Total petroleum hydrocarbons as oil

Underground Storage Tank

Voluntary Cleanup Program

Washington Administrative Code


INTRODUCTION

May 30, 2014

1.1

1.0 INTRODUCTION

Stantec Consulting Services Inc. (Stantec) was retained by 7-Eleven, Inc. (7-Eleven) to provide

documentation of the underground storage tank (UST) system removal and replacement at 7-Eleven Store

Number 23020 (the Site). The Site is located at 1522 East Madison Street, Seattle, Washington (Figures

1 and 2). The work was conducted on March 4 through March 14, 2014 in accordance with the

Washington Department of Ecology (Ecology) document: “Guidance for Site Checks and Site Assessments

for Underground Storage Tanks” [Ecology, February 1991 (revised April 2003)]. Site assessment activities

were performed by a certified Washington State Site Assessor (#8012337-U7) as required by Washington

Administrative Code (WAC) 173-360-610.

1.1 PURPOSE AND SCOPE OF WORK

Stantec supervised and observed the removal of three 12,000-gallon single-wall metal USTs, one 1,500-

gallon single-wall metal orphan UST (previously closed-in-place in 2009), two dispensers, associated

product piping, and vent risers at the Site. Following the UST system removal, a new 20,000-gallon

fiberglass dual-compartment double-wall UST (regular and premium gasoline), new dispensers, and

associated piping were installed at the Site (Figure 3). Stantec collected UST closure soil samples to

assess subsurface conditions adjacent and beneath the former USTs, dispensers, and product piping.

Stantec’s scope of work consisted of the following tasks:

Preparation of a Site-specific Health and Safety Plan (HASP);

Notification to 7-Eleven 10-business days in advance of construction activities;

Notification to Ecology 30 days prior to UST removal;

Decommissioning of monitoring well MW-4 due to its location in the future tank pit area;

Observation and documentation of the dispenser island, product piping, and UST

decommissioning activities;

Inspection of the condition of the USTs and product piping upon removal;

Collection of groundwater samples from existing wells;

Collection of soil samples from the UST excavation, stockpiles, and beneath the product lines and

former dispensers for the purposes of logging subsurface conditions, field screening soil samples

for organic vapors using a photoionization detector (PID), and submitting selected soil samples

for laboratory analysis of total petroleum hydrocarbons characterized as gasoline (TPH-G), diesel

(TPH-D), oil (TPH-O), benzene, toluene, ethyl benzene, and total xylenes (BTEX); 1, 2 –

dibromoethane (EDB), 1, 2 - dichloroethane (EDC); methyl tertiary butyl ether (MTBE),

naphthalenes, and total lead;


INTRODUCTION

May 30, 2014

1.2

Removal and disposal of petroleum contaminated soil;

Preparation of this report documenting UST removal, replacement, and Site restoration.

1.2 SITE BACKGROUND

Reviews of historical records indicate that the Site has been used as a retail petroleum facility since circa

1934. General Petroleum Corporation of California (now Exxon Mobile) operated a retail fuel facility,

service station, and car wash from the 1930’s to the late 1960’s. During the 1970’s, the Site was operated

by a small business owner that continued retail gasoline sales and also operated a car wash.

Historical records indicate that two 1,500-gallon USTs were located in the central portion of the Site in

circa 1952 and a third 1,500-gallon UST was added in circa 1966 (first generation USTs). Two 8,000-

gallon USTs were installed in the eastern portion of the Site in 1968 and a 4,000-gallon UST which

reportedly contained unleaded gasoline was installed in 1976 (second generation USTs). With the

exception of a 1,500-gallon metal UST closed-in-place in 2007, removal of the first two generations of

USTs has not been documented. 7-Eleven leased the property in 1980 and constructed the current

convenience store and installed three 12,000-gallon USTs for gasoline in 1981 (third generation USTs).

The initial release was reported for the Site in October 2007, under leaking underground storage tank

(LUST) notification number 6316, from soil samples collected during construction activities conducted at

the adjacent southwestern property; located at 1500 East Madison Street. The Site was subsequently

entered into the Ecology’s Voluntary Cleanup Program (VCP) as NW1911. From 2007 to 2010, Stantec

installed a network of ground water monitoring wells and soil vapor wells that provided data to

characterize the lateral and vertical extent of the petroleum impacted media and evaluated risk to

potential receptors. Forensic testing of petroleum product found in a perched aquifer beneath the Site

indicated that the product was leaded gasoline. Based on the conceptual site model developed from

previous investigations and information documented in this report, the primary source of the release

appears to be centered under the 7-Eleven convenience Store with a dissolved and liquid phase

hydrocarbon plume at 30- to 35-feet below ground surface (bgs) extending southwest across East

Madison St. A dual-phase extraction (DPE) remediation system was installed at the Site began operation

on June 20, 2012 and continues to operate at the time of this report. Remediation progress analytical

results and a detailed historical background of environmental activities conducted at the Site are

documented in the semi-annual remediation progress reports.

Historic groundwater quality data is documented for the Site in quarterly groundwater monitoring and

sampling reports. Site investigation activities are documented in the following reports:

Groundwater Technology, Inc. 1995. Restore Letter Report, 7-Eleven Store Number 23020, 1522

East Madison Street, Seattle, Washington. November 16, 1995.

Environmental Associates, Inc. 2005. Phase I Environmental Site Assessment Report, 7-Eleven

Store Number 23020, 1522 East Madison Street, Seattle, Washington. September 8, 2005.

Groundwater Technology, Inc. 2005. Phase II Environmental Site Assessment Report, 7-Eleven

Store Number 23020, 1522 East Madison Street, Seattle, Washington. November 3, 2005.


INTRODUCTION

May 30, 2014

1.3

SECOR International, Inc. 2007. Groundwater Monitoring Well Installation Report, 7-Eleven

Store Number 23020, 1522 East Madison Street, Seattle, Washington. January 17, 2007.

SECOR International, Inc. 2008. Groundwater Monitoring Well Installation Site Assessment

Report, 7-Eleven Store Number 23020, 1522 East Madison Street, Seattle, Washington. January

17, 2008.

Stantec Consulting Corporation. 2009. UST Closure Report, 7-Eleven Facility Number 23020,

1522 East Madison Street, Seattle, Washington. June 11, 2009.

Stantec Consulting Corporation. 2009. Additional Site Assessment Report 7-Eleven Facility

Number 23020, 1522 East Madison Street, Seattle, Washington. August 4, 2009.

Stantec Consulting Corporation. 2010. Soil Vapor Survey Report, 7-Eleven Facility Number

23020, 1522 East Madison Street, Seattle, Washington. September 30, 2010.

Stantec Consulting Corporation. 2010. Additional Site Assessment and Fourth Quarter 2009

Groundwater Monitoring Report, 7-Eleven Facility Number 23020, 1522 East Madison Street,

Seattle, Washington. October 19, 2010.

Stantec Consulting Services, Inc. 2013. Dual-Phase Extraction System Installation Report, 7-

Eleven Facility No. 23020, 1522 E Madison Street, Seattle, Washington. April 26, 2013.

Stantec Consulting Services, Inc. 2013. Soil Vapor Intrusion Assessment Report, 7-Eleven Store

No. 23020, 1522 E Madison Street, Seattle, Washington. October 21, 2013.

1.3 REGULATORY STATUS

Stantec reviewed Ecology’s electronic databases regarding the regulatory status of the Site. As of April

2014, the Site is included in Ecology’s Leaking Underground Storage Tank (LUST) list. Ecology

identification numbers for the Site are summarized below.

Facility Number: 66434231 UST Site ID: 8662 Cleanup Site ID: 6488 LUST Release ID: 6316 (October 12, 2007) Environmental Report Tracking System (ERTS) No.: 562371

VCP ID: NW1911


FACILITY DESCRIPTION

May 30, 2014

2.1

2.0 FACILITY DESCRIPTION

2.1 SITE LOCATION

The Site is located on the west corner of East Pine Street and East Madison Street in Seattle, Washington

(Figures 1 and 2).

2.2 SITE DESCRIPTION

The property is operated by 7-Eleven and is occupied by a 7-Eleven convenience store with retail sales of

gasoline. Three 12,000-gallon, single-wall metal gasoline USTs were removed from the Site on March 6

and 7, 2014 and replaced with a new UST system. The new UST system consists of a 20,000-gallon, dual-

compartment double-wall fiberglass UST, dispenser island, and ancillary equipment. The dispensers and

canopy remain in the same configuration. The land surface is covered predominantly with asphalt and

concrete with several small landscaped areas. Surface topography in the vicinity slopes moderately to the

west along East Madison Street.

2.3 SURROUNDING LAND USE

The Site is located in a wedge of land west of the intersection of East Pine Street and East Madison Street

in Seattle, Washington. Land use in the immediate area consists primarily of multi-family residences

mixed with a few commercial properties. The Site is bound to the north by East Pine Street followed by an

apartment complex; to the east and south by East Madison Street followed to the east by a grocery store

and the Olympian Apartments and followed to the south by another apartment complex; and, to the west

by another multi-story apartment building (Figures 2 and 3).

2.4 REGIONAL GEOLOGY

The Site is located on the west facing side of Capitol Hill with surface elevations ranging from

approximately 388-feet above mean sea level (MSL) to 409-feet above MSL. Subsurface geology in the

vicinity of the Site consists of sand interspersed with layers of silt, sand, and small gravels extending from

the ground surface to approximately 33-feet bgs. A confining layer of very dense silt is present beneath the

Site at a depth of approximately 33- to 40-feet bgs depending on location. This silt layer divides

groundwater into two distinct zones (upper and lower aquifer zones) and generally dips to the west like

the surface but at a lower grade. Historical site assessments indicate that source area soil impacts appear

to be predominately located between 16- and 35-feet bgs. The highest impacted soil location was

identified at MW-5 at approximately 30-feet bgs.

2.5 REGIONAL HYDROGEOLOGY

Groundwater generally flows to the southwest, although minor perturbations in flow direction have been

measured in the immediate vicinity of the current 7-Eleven store building and dispenser island.


FIELD ACTIVITIES

May 30, 2014

3.2

3.0 FIELD ACTIVITIES

3.1 WELL DECOMMISSIONING ACTIVITIES

Due to the size of the replacement UST, the former groundwater monitoring well MW-4 was

decommissioned due to its location in the future tank pit area. On February 25, 2014, Stantec supervised

Environmental Services Network Northwest (ESN) of Olympia, Washington decommission MW-4 by over

drilling the well casing using a hollow-stem auger and backfilling with bentonite chips in accordance with

Ecology Abandonment Procedures WAC 332-17-310. The well monument was removed and the hole was

patched to match the existing surface. A well decommissioning report for MW-4 will be included in the

upcoming semi-annual groundwater report.

3.2 GROUNDWATER MONITORING AND SAMPLING ACTIVITIES

In accordance with Section 5.3 of Guidance for Site Checks and Site Assessments for Underground

Storage Tanks, groundwater samples must be collected during a site assessment when existing monitoring

wells are already located on the Site. Monitoring wells were selected to allow for the collection of

representative groundwater samples to assess current groundwater conditions.

3.2.1 Groundwater Flow Direction and Gradient

The first quarter 2014 groundwater monitoring and sampling event was conducted at the Site on February

24 and 25, 2014. The approximate depth to groundwater encountered in the upper aquifer zone during

the event ranged from approximately 21.53 feet below top of casing (TOC) in monitoring well MW-13 to

38.36 feet below TOC in monitoring well MW-11. During the monitoring and sampling event, the

groundwater flow direction in the upper aquifer zone was generally to the southwest with an average

hydraulic gradient of approximately 0.048 vertical feet per horizontal foot (ft/ft). Deeper groundwater

associated with the lower aquifer zone has historically been level and was not calculated. An upper

aquifer groundwater contour map and a rose diagram representing the historical groundwater flow

direction is also included on Figure 4.

3.2.2 Groundwater Analytical Methods

Groundwater samples were collected from eight monitoring wells (MW-4, MW-5, MW-6, MW-9, MW-10,

MW-11, MW-13, and EW-6) on February 25, 2014. Groundwater was bailed from the wells by using

plastic bailers and then poured directly into uniquely identified, laboratory prepared sample containers.

The sample containers were immediately placed into an iced cooler pending transport to the analytical

laboratory. Environmental Protection Agency (EPA)-recommended protocols for sample management,

including chain-of-custody documentation, were observed during sampling activities. Stantec’s purging

and sampling procedures are provide in Appendix A. Groundwater monitoring and sampling field data

sheets are included in Appendix B. Eight groundwater samples collected during the sampling event

were submitted to Fremont Analytical, Inc. laboratory (Fremont) on February 28, 2014 for analysis of

BTEX by Method 8260, EDB by EPA Method 8011, TPH-G by EPA Method Northwest Total Petroleum


FIELD ACTIVITIES

May 30, 2014

3.3

Hydrocarbons as Gasoline (NWTPH-Gx), TPH-D&O by Method NWTPH-Dx, and total and dissolved lead

by EPA Method 200.8. Laboratory analytical results are provided in Appendix C.

3.2.3 Groundwater Analytical Results

Laboratory results from samples collected from existing monitoring wells indicated that dissolved

concentrations of petroleum hydrocarbon constituents exceeded Model Toxics Control Act (MTCA)

Method A cleanup levels (CULs) in several groundwater samples. The following analytes were exceeded

in groundwater samples collected from the following list of wells:

Benzene: MW-6, MW-10

Toluene: MW-10

Ethyl benzene: MW-10

Total Xylenes: MW-10

TPH-G: MW-5, MW-6, MW-9, and MW-10

TPH-D: MW-5, MW-6, MW-9, and MW-10

TPH-O: None

Total Lead: MW-5 and MW-6

3.3 UST REMOVAL ACTIVITIES

Sabyr Contractors, Inc. (Sabyr) of Tacoma, Washington was contracted to remove one previously closed-

in-place (controlled density fill) 1,500-gallon single-wall metal orphan UST and three 12,000-gallon

single-wall metal USTs and ancillary equipment at the Site. Prior to the initiation of tank removal

activities, the following tasks were completed:

A 30 day notice of UST closure was completed by Stantec and submitted to Ecology on

January 3, 2014 (Appendix D);

A Washington State Environmental Policy Act (SEPA) Notice was submitted to Ecology;

A Determination of Non-Significance (DNS) decision was granted on November 18, 2013;

The three 12,000-gallon USTs were emptied by 7-Eleven;

One Call was contacted to determine the presence of underground utilities; and,

Electrical service to the dispenser island and USTs was isolated and removed by a certified

electrician.

A site-specific HASP was prepared for the Site as part of the project. The HASP identified potential

physical and chemical hazards associated with the proposed field activities and established personal

protection standards and mandatory safety practices. The HASP also included information on suspected

chemical compounds to be encountered, a list of monitoring equipment, the required protective clothing


FIELD ACTIVITIES

May 30, 2014

3.4

and equipment, a map and directions to the nearest hospital, and a list of emergency telephone numbers.

The HASP was available on Site during the field activities. Stantec personnel and subcontractors working

on Site were required to review, sign, and comply with the provisions set forth in the HASP.

On March 3, 2014, the remaining product was removed and the USTs were triple-rinsed. The rinse water

was transported to a permitted hazardous waste treatment and disposal facility. Waste manifests are

provided in Appendix E. Following rinsing, the USTs were rendered inert by venting using compressed

carbon dioxide gas. A Washington State certified marine chemist from Sound Testing, Inc. of Seattle,

Washington confirmed the organic vapor levels in the tanks with a combustible gas meter prior to removal

(Appendix E).

The Ecology Underground Storage Tank Closure and Site Assessment Notice and Underground Storage

Tank Site Check/Site Assessment Checklist are included in Appendix D.

3.4 FIELD SCREENING AND SOIL SAMPLING ACTIVITIES

3.4.1 Field Screening

Field screening consisted of visual observations of potential hydrocarbon contamination and headspace

analysis of volatile organic vapors. Backfill material removed from the UST and dispenser island

excavation was screened for organic vapors with a MiniRae, Inc., Organic Vapor Meter PID. A sample of

soil matrix was placed in a re-sealable plastic bag and allowed to equilibrate for approximately 10

minutes. The probe of the PID was used to pierce the plastic and was extended into the headspace above

the soil surface. The highest vapor reading obtained during the next 60 seconds was then recorded. Prior

to use, the PID was calibrated to a known concentration of isobutylene, in accordance with the

manufacturer’s specifications.

Headspace vapor measurements for all soil sample locations collected at the Site are summarized in

Tables 1A and 1B. Elevated PID readings, hydrocarbon odors, and staining were encountered in the

UST excavation and in the vicinity of the dispenser (Figure 2). PID readings above 100 parts per million

(ppm) were observed in the native soils underneath the 1,500-gallon single-wall metal orphan UST

(ORPH-1@8’ and ORPH-2@10’), underneath the east 12,000-gallon single-wall metal UST (SS-4@13’),

dispenser – south location ([email protected]’, and [email protected]’FD), product line (PL-1@3’), in the area

excavated for placement of the new 20,000-gallon fiberglass UST (SS-6@14’) near decommissioned well

MW-4, and in one stockpile (SP-8). The highest PID measurement (1,478 ppm) was collected from a

stockpile sample (SP-8) on March 10, 2014. This soil sample was collected from excavated soil that was

formerly located by the decommissioned well MW-4 in the western portion of the excavation at 14-feet

bgs in a gray silty layer. Material with elevated PID readings or visible staining was stockpiled on

visqueen and sampled before final disposal.

3.4.2 Soil Sampling Activities

During excavation activities, Stantec personnel collected soil samples from beneath the 1,500-gallon

single-wall metal orphan UST and from the excavation sidewalls, and beneath the dispenser island and


FIELD ACTIVITIES

May 30, 2014

3.5

product lines of the three 12,000-gallon single-wall metal USTs, in accordance with published EPA and

Ecology guidelines. Sampling was conducted at locations with the following criteria: visual evidence of

soil staining, noticeable odors, and elevated headspace vapor concentration measurements. Samples

collected from the sidewalls and base of the excavation were taken on an approximate 10-foot vertical by

10-foot horizontal grid, when possible. Soil samples from the UST excavation were collected from the

excavator bucket due to safety concerns.

Soil samples submitted for laboratory analysis were collected in accordance with United States EPA

Method 5035A; using a syringe-type sampler to obtain approximately 5 grams of soil from the desired

sample location. The samples were then placed directly into pre-weighed, methanol preserved, 40-

milliliter vials (supplied by the analytical laboratory). Additional soil was collected by hand and placed

directly into a clean 4-ounce glass jar. A clean, disposable glove was used for each sample. Care was

taken to obtain representative soil samples and to place the soils quickly and directly into the sample

container to minimize loss of volatile constituents. Each jar was completely filled to minimize headspace

and sealed with a Teflon-lined screw cap. Each sample was then labeled and placed on ice in a cooler.

3.4.3 Soil Analytical Methods

The soil samples were collected from the UST excavation, product piping lines, stockpiles, and beneath

the dispenser island were delivered under chain-of-custody (COC) to Fremont. Two sample locations

were selected from the 1,500-gallon single-wall metal orphan UST and eleven sample locations were

selected from the UST basin for laboratory analysis based on PID readings, soil staining, and location.

Twelve additional soil samples were taken from the stockpiled soil and were delivered under COC to

Fremont. Samples were analyzed for BTEX, TPH-G, and total lead. Nine soil samples, [email protected]’, DPS-

[email protected]’FD, ORPH-1@8’, ORPH-2@10’, PL-1@3’, SS-1@14’, SS-2@15’, SS-4@13’, SS-6@14’, were also

analyzed for EDB, EDC, MTBE, naphthalenes, TPH-D, and TPH-O. Five stockpile samples, SP-8, SP-9,

SP-10, SP-11, and SP-12, were also analyzed for TPH-D and TPH-O.

3.4.4 Soil Analytical Results

Concentrations of TPH-G in samples ORPH-1@8’, ORPH-2@10’, [email protected]’, [email protected]’FD, PL-1@3’,

SP-8, SP-12, SS-4@13’, and SS-6@14’ exceeded the MTCA Method A CUL. Concentrations of benzene in

sample SS-1@14’ exceeded the MTCA Method A CUL. Concentrations of naphthalene in samples DPS-

[email protected]’FD and ORPH-2@10’ exceeded the MTCA Method A CUL. All other concentrations of BTEX, TPH-

G, TPH-D, TPH-O, MTBE, EDB, EDC, naphthalenes, and total lead were either reported below their

respective MTCA Method A CULs or reported not exceeding laboratory reporting limits in all submitted

soil samples.

Analytical results for the submitted soil samples are summarized in Tables 1A and 1B. Complete

laboratory results and chain-of-custody documentation are included in Appendix C.


FIELD ACTIVITIES

May 30, 2014

3.6

3.5 UST INSTALLATION ACTIVITIES

Following removal of the previously closed-in-place 1,500-gallon single-wall metal orphan UST and three

12,000-gallon single-wall metal USTs in the tank excavation, Sabyr supervised the installation of one new

20,000-gallon double-wall dual compartment fiberglass UST. The dual compartment UST is designed to

store 12,000 gallons of regular unleaded gasoline and 8,000 gallons of premium unleaded gasoline. The

tank excavation was extended approximately 20-feet to the west due to the larger size of the new 20,000-

gallon UST. The new UST was set in place on March 13, 2014. The layout of the newly installed UST is

presented in Figure 3.

3.6 SOIL BACKFILLING

All of the soil excavated from the tank pit and vicinity of the dispensers was removed and disposed off-Site

as described in section 4.1. Upon completion of compliance soil sampling and the placement of the new

UST, the tank excavation pit was backfilled with clean imported pea gravel to near the surface. The area

above the tank and around the dispensers was then resurfaced with concrete. Asphalt was used to

resurface the remaining area.


REMEDIAL ACTIONS

May 30, 2014

4.1

4.0 REMEDIAL ACTIONS

4.1 EXCAVATION AND SOIL DISPOSAL

Approximately 1,033 tons of petroleum impacted soil was removed from and around the tank excavation

and disposed of at CEMEX Everett Soil Plant located in Everett, Washington. Soil disposal receipts are

provided in Appendix E.


SUMMARY AND CONCLUSIONS

May 30, 2014

5.2

5.0 SUMMARY AND CONCLUSIONS

Three 12,000-gallon, single-wall metal USTs, one 1,500 gallon previously closed-in-place single-wall

metal orphan UST, dispenser island, and associated product piping were removed from the Site between

March 4 and March 14, 2014. Following the UST system removal, a new 20,000-gallon fiberglass dual-

compartment double-wall UST (premium gasoline and regular gasoline), new dispensers, and associated

piping were installed at the Site (Figure 3). Based on the field observations and analytical data, Stantec

concludes the following:

Upon exposure and visual inspection, the three 12,000-gallon metal UST’s appeared to be in

overall good condition, and no apparent failures were observed;

The formerly closed-in-place 1,500-gallon metal orphan UST was removed from the subsurface;

Petroleum hydrocarbon constituents were detected above their respective MTCA Method A CULs

in ten soil samples submitted for laboratory analysis. All of the soil sample locations collected

during this assessment were removed from the Site during excavation activities;

Groundwater was not encountered during excavation. Based on monitoring well elevations

measured before this investigation, groundwater appeared to flow to the southwest with an

average local hydraulic gradient of approximately 0.048 ft/ft. Laboratory results from samples

collected from existing monitoring wells indicated that dissolved concentrations of petroleum

hydrocarbon constituents were above their respective Ecology MTCA Method A CULs;

A total of approximately 1,033 tons of petroleum impacted soil was removed from the Site and

disposed of at the CEMEX Soil Plant in Everett, Washington; and,

Petroleum impacted soil was encountered in 3 areas during this investigation: beneath the 1,500

gallon closed-in-place single-wall metal orphan first generation UST, in a silt layer encountered

between 15- and 20-feet bgs, and in isolated pockets beneath the dispenser island.

Based on the conceptual site model developed for the Site during previous investigations, soil samples

collected during this investigation, and visual inspection of the excavated USTs removed from the

Site, the primary source of the reported release is not likely from the third generation USTs that 7-

Eleven installed in 1981 and removed during this investigation. Stantec recommends continued

remediation and assessment activities at the Site.


REFERENCES

May 30, 2014

6.1

6.0 REFERENCES

Groundwater Technology, Inc. (GTI), 1995. Restore Letter Report, 7-Eleven Facility Number 23020, 1522

East Madison Avenue, Seattle, Washington. November 16.

G-Logics, Inc. 2007. Cleanup Action Report, 1500 East Madison Property and Affected Portion of 1522

East Madison Street, Seattle, Washington. November 2.

SECOR International, Inc. 2007. Groundwater Monitoring Well Installation Report, 7-Eleven Store

Number 23020, 1522 East Madison Street, Seattle, Washington. September 7.

SECOR International, Inc. 2008. Groundwater Monitoring Well Installation Site Assessment Report, 7-

Eleven Store Number 23020, 1522 East Madison Street, Seattle, Washington. January 17.

Stantec Consulting Corporation. 2009a. UST Closure Report 7-Eleven Facility Number 23020, 1522

East Madison Street, Seattle, Washington. June 11.

Stantec Consulting Corporation. 2009b. Additional Site Assessment Report 7-Eleven Facility Number

23020, 1522 East Madison Street, Seattle, Washington. August 4.

Stantec Consulting Corporation. 2009c. First Quarter 2009 Quarterly Report 7-Eleven Facility Number

23020, 1522 East Madison Street, Seattle, Washington. August 26.

Stantec Consulting Corporation. 2009d. Second Quarter 2009 Quarterly Report 7-Eleven Facility

Number 23020, 1522 East Madison Street, Seattle, Washington. October 4.

Stantec Consulting Corporation. 2010. Third Quarter 2009 Quarterly Report 7-Eleven Facility Number

23020, 1522 East Madison Street, Seattle, Washington. April 4.

Stantec Consulting Corporation. 2011. Dual Phase Extraction Pilot Test Report, 7-Eleven Facility Number

23020, 1522 East Madison Street, Seattle, Washington. June 15.

Stantec Consulting Services, Inc. 2013. Dual-Phase Extraction System Installation Report, 7-Eleven

Facility No. 23020, 1522 E Madison Street, Seattle, Washington. April 26.

Stantec Consulting Services, Inc. 2013. Semi-Annual Remediation Progress Report – First and Second

Quarter 2013, 7-Eleven Store No. 23020, 1522 E Madison Street, Seattle, Washington. September 11.

Stantec Consulting Services, Inc. 2013. Soil Vapor Intrusion Assessment Report, 7-Eleven Store No.

23020, 1522 E Madison Street, Seattle, Washington. October 21.

Stantec Consulting Services, Inc. 2014. Semi-Annual Remediation Progress Report – Third and Fourth

Quarter 2013, 7-Eleven Store No. 23020, 1522 E Madison Street, Seattle, Washington. March 18.


REFERENCES

May 30, 2014

6.2

State of Washington Department of Ecology. 2011. Guidance for Remediation of Petroleum

Contaminated Sites, Toxics Cleanup Program, Publication No. 10-09-057 – September 2011. September

2011.

Underground Storage Tank (UST) and Leaking Underground Storage Tank (LUST) List available from:

https//fortress.wa.gov/ecytcpwebreporting/reports.aspx [Accessed November 12, 2013].

Washington State Department of Ecology, 2007. Model Toxics Control Act Cleanup Regulation, Chapter

173-340 WAC. January 1996, revised November 2007.


TABLES

SampleLocation

06/12/07 14 SP 2.1 <0.020 <0.056 <0.056 <0.112 <5.6 -- -- --

06/12/07 19 SP 6.8 <0.020 <0.064 <0.064 <0.128 <6.4 -- -- --

06/12/07 24 SP 2.6 0.046 0.12 <0.059 0.12 <5.9 -- -- --

06/12/07 29 SM 220 15 9.6 13 48.5 1,300 -- -- --

06/12/07 19 SP 1.0 <0.020 <0.052 <0.052 <0.104 <5.2 -- -- --

06/12/07 24 SP 3.0 <0.020 <0.061 <0.061 <0.122 <6.1 -- -- --

06/12/07 29 SM 9.6 <0.020 <0.060 <0.060 <0.120 <6.0 -- -- --

09/17/07 15 SM 0.0 <0.020 <0.050 <0.050 <0.100 <5.0 -- -- --

09/17/07 30 SM 0.0 <0.020 <0.055 <0.055 <0.110 <5.5 -- -- --

09/17/07 15 SM 200 <0.0111

<0.541

<1.11

<1.21 480 -- -- --

09/17/07 20 SM 30 <0.020 <0.048 0.11 <0.481 290 -- -- --

09/17/07 10 SW 0.0 <0.020 <0.048 <0.048 <0.096 <4.8 -- -- --

09/17/07 15 SP 200 <0.021 <0.11 <0.11 <0.22 <11 -- -- --

09/17/07 25 SM 2.0 <0.020 <0.054 <0.054 0.076 <5.4 -- -- --

09/17/07 30 SM 1,400 45 1502

1702

8002 9,500 -- -- --

09/17/07 20 SM 3.0 <0.020 <0.049 <0.049 <0.098 <4.9 -- -- --

09/17/07 30 SM 1,300 0.29 0.59 0.76 4.7 410 -- -- --

09/18/07 25 SP 0.0 <0.020 <0.075 <0.075 <0.150 <7.5 -- -- --

09/18/07 35 ML 0.0 <0.020 <0.056 <0.056 <0.112 <5.6 -- -- --

09/18/07 10 SW 0.0 <0.020 <0.046 <0.046 <0.092 <4.6 -- -- --

09/18/07 25 SP 0.0 <0.020 <0.054 <0.054 <0.108 <5.4 -- -- --

08/07/08 10 SW 12.5 <0.020 <0.058 <0.058 <0.116 <5.8 <28 <56 --

08/07/08 30 SP 1,000 17 28 18 93 870 82 <60 --

08/07/08 20 SM 1,400 5.6 13 22 152 1,100 <30 <60 --

08/07/08 30 SM 1,900 8.2 27 18 94 820 <27 <53 --

SW-S South Side Wall 11/05/08 6 SW 0.0 <0.020 <0.057 <0.057 <0.114 <5.7 -- --6.9

SW-N North Side Wall 11/04/08 6 SW 0.0 <0.020 <0.052 <0.052 <0.104 <5.2 -- --8.7

SW-E East Side Wall 11/04/08 3 SW 600 0.065 0.26 0.16 0.91 15 -- -- 27

B-E3 Bottom 11/05/08 10 SW 9,999 0.086 <0.50 5.6 5.20 1,800 <32 <64 15

SP-1 Stockpile 11/05/08 -- SW 0 <0.020 <0.055 <0.055 0.110 10 <28 160 --

09/16/09 30 SM 887 0.70 6.3 9.0 51 850 -- -- <5.4

09/16/09 35 ML 395 1.1 <0.16 0.72 2.12 <16 -- -- <6.6

11/04/09 15 GM 35 <0.020 <0.061 <0.061 <0.122 <6.1 -- -- <5.4

11/04/09 30 ML 18.5 <0.020 <0.080 <0.080 <0.160 <8.0 -- -- <6.4

11/04/09 31.5 SM 0.0 <0.020 <0.054 <0.054 <0.108 <5.4 -- -- <5.4

11/04/09 34.5 SM 2.3 <0.020 <0.060 <0.060 <0.120 <6.0 -- -- <5.5

11/04/09 37.5 SM 0.0 <0.020 <0.069 <0.069 <0.138 <6.9 -- -- <6.1

MW-13 MW-13 11/03/09 20 SM 0.0 <0.020 <0.065 <0.065 <0.130 <6.5 -- -- <5.9

11/03/09 10 SP 1.9 <0.020 <0.055 <0.055 <0.110 <5.5 -- -- <5.3

11/03/09 25 SP 0.0 <0.020 <0.064 <0.064 <0.128 <6.4 -- -- --

05/24/11 15 SP 0.0 <0.02 <0.02 <0.02 <0.06 <2 -- -- --

05/25/11 25 SP 0.0 <0.02 <0.02 <0.02 <0.06 <2 -- -- --

10/30/13 22 ML 118 <0.4 2.3 2.0 10 510 -- -- 8.62

10/30/13 37 SP 716 <0.2 <0.2 <0.2 9.9 830 <50 <250 4.55

10/30/13 41 ML 18.4 0.049 0.024 0.30 <0.06 4.0 -- -- 5.44

ORPH-1@8' 03/04/14 8 SP 894 <0.0223 <0.0223 <0.0335 <0.0446 117 5 -- -- 3.74

ORPH-2@10' 03/04/14 10 SP 1,464 <0.0214 <0.0214 0.0744 <0.0428 345 6 213 5 <59.9 3.62

SP-1 03/07/14 -- SP 0.0 <0.0116 0.0198 <0.0174 0.0564 10.8 -- -- 18.2

SP-2 03/07/14 -- SP 0.0 <0.0177 <0.0177 <0.0266 <0.0354 <4.43 -- -- 22.4

SP-3 03/07/14 -- SP 0.0 <0.0136 <0.0136 0.387 5.49 27.3 5 -- -- 23.6

SP-4 03/07/14 -- SP 0.0 <0.0141 <0.0141 <0.0212 0.0150 <3.53 -- -- 23.5SP-5 03/07/14 -- SP 0.0 <0.0151 <0.0151 <0.0226 <0.0302 5.66 -- -- 23.4

SP-6 03/07/14 -- SP 0.0 <0.0128 <0.0128 <0.0192 <0.0256 <3.20 -- -- 20.0SP-7 03/07/14 -- SP 0.0 <0.0122 <0.0122 <0.0183 <0.0244 <3.06 -- -- 21.1

SP-8 03/10/14 -- SP 1,478 0.0167 <0.0112 4.74 4.274 603 160 7 <60.1 3.54

SP-9 03/14/14 -- SP 19.4 <0.0125 <0.0125 <0.0187 <0.0250 24.8 <21.9 <54.7 11.3SP-10 03/14/14 -- SP 13.2 <0.0114 <0.0114 <0.0170 <0.0228 29.4 <22.2 <55.6 11.0SP-11 03/14/14 -- SP 51.6 <0.00856 <0.00856 <0.0128 <0.01712 25.8 <22.4 <56.0 12.3SP-12 03/14/14 -- SP 43.9 <0.0128 <0.0128 <0.0191 <0.0256 31.5 <21.7 <54.1 9.96

-- -- -- 0.03 7 6 9 304 2,000 2,000 250

MW-11

MW-12

MW-14

EW-1

EW-6

MW-11

MW-12

MW-14

Groundwater Monitoring Well Installation- November 2009

Monitoring and Extraction Well Installation - May 2011

1st Generation Orphan UST Removal - March 2014

UST Removal - March 2014

SidewallSamples

StockpileSamples

MW-15 MW-15

EW-6

Additional Extraction Well Installation - October 2013

MW-7

MW-8

MW-9

MW-10

EW-1

MW-10

Extraction Well Installation - September 2009

TotalLead

MW-6

SampleID

Depth(feet bgs)

USCSPID

(ppm)Date

Sampled

MW-1

MW-2

MW-3

MW-4

MW-5

EthylBenzene

TotalXylenes

MW-3

MW-4

MW-5

MW-6

MW-7

Table 1A

7-Eleven Store No. 23020Soil Analytical Results

1522 East Madison StreetSeattle, Washington

All Concentrations Reported in Milligrams per Kilogram (mg/kg)

Groundwater Monitoring Well Installation - June 2007

Groundwater Monitoring Well Installation - September 2007

Groundwater Monitoring Well Installation - August 2008

1st Generation Orphan UST Closure In-Place- November 2008

MW-1

MW-2

TPH-G TPH-D TPH-O

MW-8

MW-9

Benzene Toluene

MTCA Method A Cleanup Levels forUnrestricted Land Use

23020 UST System Replacement Report.xlsx Stantec Consulting Services Inc.

SampleLocation

TotalLead

SampleID

Depth(feet bgs)

USCSPID

(ppm)Date

SampledEthyl

BenzeneTotal

Xylenes

Table 1A

7-Eleven Store No. 23020Soil Analytical Results



Groundwater Monitoring Well Installation - June 2007

TPH-G TPH-D TPH-OBenzene Toluene

PL-1@3' Product Line 03/14/14 2 ML 1,312 <0.0104 <0.0104 1.17 1.7339 780 331 <54.6 3.12

[email protected]' 03/14/14 3.5ML

1,364 <0.0108 <0.0108 1.31 1.4977 635 22.8 <55.3 18.1

[email protected]'FD 03/14/14 3.5 ML 1,364 <0.0168 <0.0168 4.45 4.809 2,020 1057 <61.4 12.6

DPN-1@3' 03/14/14 3 SP 4.6 <0.0115 <0.0115 <0.0173 <0.0230 <2.88 -- -- 15.1SS-1@14' 03/07/14 14 SP 76.1 0.0549 0.221 <0.0206 0.0423 <3.43 <21.2 <53.0 27.6SS-2@15' 03/07/14 15 SP 20.3 <0.0189 <0.0189 <0.0284 <0.0378 <4.73 <19.8 <49.4 2.42SS-3@15' 03/07/14 15 SP 0.0 <0.0190 <0.0190 <0.0284 <0.0380 <4.74 -- -- 2.02

SS-4@13' 03/07/14 13 SP 1,157 <0.0142 0.0461 <0.0213 <0.0284 851 1497 <53.8 5.37

SS-5@15' 03/07/14 15 SP 0.0 <0.0130 <0.0130 <0.0194 <0.0260 <3.24 -- -- 1.87SS-6@14' 03/10/14 14 SM/SP 1,355 <0.0132 <0.0132 0.106 0.0803 294 <22.5 <56.3 3.31SS-7@10' 03/14/14 10 SP 8.0 <0.0116 <0.0116 <0.0174 <0.0232 4.75 -- -- 6.19

-- -- -- 0.03 7 6 9 304 2,000 2,000 250

-- = not analyzed / not applicablebgs

BTEX

mg/kgPID

ppmTPH-G = Total petroleum hydrocarbons as gasoline

TPH-DTPH-O

USCS

1

2

3

4

5

6

7

Bold

Explanation of Abbreviations


= analytical result exceeds the specified MTCA Method A Cleanup Level

Notes:

= The practical quantitation limit is elevated due to interferences present in the sample.

= The value reported exceeds the quantitation range and is an estimate.

= BTEX as analyzed by EPA Method 5035A for Volatile Petroleum Hydrocarbons (VPH)

= gasoline mixtures without benzene and where the total of ethylbenzene, toluene, and xylene are less than 1% of the gasoline mixture

have a cleanup level of 100 mg/Kg; all other mixtures are 30 mg/Kg

= below ground surface

= parts per million

= benzene, toluene, ethylbenzene, and total xylenes

= milligrams per kilogram

= Indicates the presence of unresolved compounds eluting from dodecane through tetracosane (C12-C24). Chromatogram suggests an unresolvable gasoline compound.

= Indicates the presence of unresolved compounds eluting from dodecane through tetracosane (C12-C24).

DispenserIsland

Samples

Sidewall

Samples

= Indicates the presence of unresolved compounds eluting from toluene to dodecane (~C7->C12).

= total petroleum hydrocarbons in the oil range

= Unified Soil Classification System

= total petroleum hydrocarbons in the diesel range

= photoionization detector

23020 UST System Replacement Report.xlsx Stantec Consulting Services Inc.

Sample

SW-SSouth Side

Wall11/05/08 6 SW 0.0

-- -- -- --

SW-NNorth Side

Wall11/04/08 6 SW 0.0

-- -- -- --

SW-E East Side Wall 11/04/08 3 SW 600 -- -- -- --

B-E3 Bottom 11/05/08 10 SW 9,999 <0.50 <0.068 <0.068 --

SP-1 Stock Pile 11/05/08 Stockpile SW 0 -- -- -- --

09/16/09 30 SM 887 <0.052 <0.052 <0.052 --

09/16/09 35 ML 395 <0.0012 0.011 <0.0012 --

10/30/13 22 ML 118 -- -- -- --10/30/13 37 SP 716 <0.05 <0.05 <0.005 0.195

10/30/13 41 ML 18.4 -- -- -- --

ORPH-1@8' 03/04/14 8 SP 894 <0.0558 <0.0335 <0.00558 <0.224

ORPH-2@10' 03/04/14 10 SP 1,464 <0.0535 <0.0321 <0.00535 14.740

PL-1@3' Product Line 03/14/14 2 ML 1,312 <0.0260 <0.0156 <0.00260 [email protected]' 03/14/14 3.5 ML 1,364 <0.0269 <0.0161 <0.00269 1.496

[email protected]'FD 03/14/14 3.5 ML 1,364 <0.0420 <0.0252 <0.00420 11.660SS-1@14' 03/07/14 14 SP 76.1 <0.0343 <0.0206 <0.00343 <0.151SS-2@15' 03/07/14 15 SP 20.3 <0.0473 <0.0284 <0.00473 <0.134SS-4@13' 03/07/14 13 SP 1,157 <0.0355 <0.0213 <0.00355 <0.147SS-6@14' 03/10/14 14 SM/SP 1,355 <0.0331 <0.0198 <0.00331 0.1727

-- -- -- 0.1 NR 0.005 5 1

Notes:1 = Total naphthalenes include naphthalene, 2-methylnaphthalene, and 1-methylnaphthalene

Explanation of Abbreviations

bgs = below ground surface

EDB = 1,2-DibromoethaneEDC = 1,2-Dichloroethane

mg/kg = milligrams per kilogramMTCA = Model Toxics Control Act

NR = not researchedPID = photoionization detectorppm = parts per million

USCS = Unified Soil Classification System

Bold = analytical result exceeds the specified MTCA Method A Cleanup Level



Total

Naphthalenes 1

SampleID

EDBMTBE EDCDate

SampledDepth

(feet bgs)USCS

PID(ppm)

Table 1B


SidewallSamples

1st Generation Orphan UST Removal - March 2014

UST Removal - March 2014

1st Generation Orphan UST Closure In-Place- November 2008

Extraction Well Installation - September 2009

Additional Extraction Well Installation - October 2013

DispenserIsland

Side WallSamples

EW-1

EW-6

EW-1

EW-6

Additional Soil Analytical Results7-Eleven Store No. 23020

23020 UST Replacement Report Tables.xlsx Stantec Consulting Services Inc.

MTBE EDB EDC

Benzene TolueneEthyl

BenzeneTotal

XylenesTPH-G TPH-D TPH-O (µg/L) (µg/L) (µg/L)

06/14/07 2,000 26 120 290 1,600 -- -- -- -- -- -- -- 36.05 -- 363.9009/26/07 2,200 110 480 1,650 7,600 -- -- -- -- -- -- -- 36.45 -- 363.5011/19/07 -- -- -- -- -- -- -- -- -- -- -- -- 36.75 -- 363.2012/11/07 2,000 190 810 1,970 11,000 -- -- -- -- -- -- -- 36.65 -- 363.30

03/05/08 2,100 99 840 2,180 12,000 -- -- -- -- -- -- -- 36.81 -- 363.1406/23/08 1,800 59 790 2,090 11,000 650 570 -- -- -- -- -- 37.04 -- 362.9108/08/08

09/23/08 2,500 4,000 1,100 5,900 44,000 -- -- -- -- -- -- -- 30.80 -- 369.1512/08/08 2,500 2,000 1,200 4,300 31,000 -- -- -- -- -- -- -- 29.78 -- 370.1703/10/09 2,600 2,700 1,400 5,900 37,000 -- -- -- -- -- -- -- 31.02 -- 368.9306/11/09 1,400 140 530 1,850 11,000 <400 <440 -- -- -- -- -- 28.96 -- 370.9906/25/09 -- -- -- -- -- -- -- -- -- -- -- -- 31.00 -- 368.9509/16/09 220 54 110 327 2,800 -- -- 36 -- -- -- -- 31.00 -- 368.9512/01/09 750 46 640 1,340 17,000 -- -- -- -- -- -- -- 31.07 -- 368.8801/14/10 -- -- -- -- -- -- -- -- -- -- -- -- 30.31 -- 369.6401/21/10 -- -- -- -- -- -- -- -- -- -- -- -- 30.29 -- 369.6601/28/10 -- -- -- -- -- -- -- -- -- -- -- -- 31.31 -- 368.6403/11/10 1,000 250 980 2,900 31,000 -- -- -- -- -- -- -- 30.61 -- 369.3406/16/10 760 630 880 2,520 28,000 -- -- -- -- -- -- -- 30.29 -- 369.6609/19/10 840 890 910 2,500 22,000 -- -- -- -- -- -- -- 30.34 -- 369.6112/15/10 590 120 620 1,700 20,000 -- -- -- -- -- -- -- 30.55 -- 369.4003/07/11 310 47 570 670 11,000 -- -- -- -- -- -- -- 30.04 -- 369.9106/23/11 250 170 470 1,500 12,000 -- -- -- -- -- -- -- 29.69 -- 370.2609/20/11 86 76 310 1,600 6,900 -- -- -- -- -- -- -- 29.82 -- 370.1312/07/11 310 150 380 1,400 9,200 -- -- -- -- -- -- -- 30.26 -- 369.6902/29/12 310 72 260 860 6,300 -- -- -- -- -- -- -- 30.42 -- 369.53

06/07/12 240 200 350 1,100 8,400 -- -- 1.57 <1 <0.01 6.8 -- 30.20 -- 369.75

06/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 30.20 -- 369.75

06/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 30.20 -- 369.75

08/23/12 3.7 1.1 5.7 23 290 -- -- 2.31 <1 <0.01 8.2 -- 31.83 -- 368.12

11/08/12 4.9 23 12 100 390 -- -- -- <1 <0.01 1.1 -- 31.65 -- 368.30

02/08/13 <0.35 <1 <1 <3 <100 -- -- -- <1 <0.01 1.2 -- 31.86 -- 368.09

05/08/13 0.52 <1 <1 <3 <100 130 x <250 29.4 <1 <0.00993 3.5 -- 31.50 -- 368.45

08/20/13 <1 <1 <1 <3 <100 <50 s <250 s 7.58 -- -- -- -- 31.38 -- 368.57

11/26/13 <1 <1 <1 <3 <100 -- -- 10.0 -- -- -- -- 31.88 -- 368.07

02/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 32.07 -- 367.88

02/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 31.75 -- 368.20

09/23/08 17 1.8 <1.0 7.9 <100 -- -- -- -- -- -- -- 36.98 -- 363.0312/08/08 7.4 35 3.7 19.5 190 -- -- -- -- -- -- -- 31.82 -- 368.1903/10/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.40 -- 362.6106/11/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.27 -- 362.7406/25/09 -- -- -- -- -- -- -- -- -- -- -- -- 37.30 -- 362.7109/16/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- 10 -- -- -- -- 37.35 -- 362.6612/01/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.45 -- 362.5603/11/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.15 -- 362.8609/19/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 36.76 -- 363.2512/15/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 37.06 -- 362.9503/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 36.54 -- 363.4706/23/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.80 -- 364.2109/20/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.73 -- 364.2812/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 36.08 -- 363.9303/01/12 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 36.34 -- 363.67

06/06/12 <1 <1 <1 <3 <100 -- -- 2.12 <1 <0.01 67 -- 36.22 -- 363.79

08/22/12 <1 <1 <1 <3 <100 -- -- -- <1 <0.01 120 -- 36.25 -- 363.76

11/07/12 <0.35 <1 <1 <3 <100 -- -- 2.23 <1 <0.01 110 -- 36.54 -- 363.47

02/07/13 <0.35 <1 <1 <3 <100 -- -- 6.44 <1 <0.01 37 -- 36.32 -- 363.69

05/08/13 <0.35 <1 <1 <3 <100 <50 <250 4.83 <1 <0.01 97 -- 36.05 -- 363.96

08/20/13 <1 <1 <1 <3 <100 -- -- 5.85 <1 <0.01 pc 150 -- 36.05 -- 363.96

02/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 36.89 -- 363.12

02/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 36.85 -- 363.16

06/14/07 6.9 2.9 <1.0 4.5 <100 -- -- -- -- -- -- -- 36.10 -- 363.90

09/26/07 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 39.89 -- 360.11

11/19/07 -- -- -- -- -- -- -- -- -- -- -- -- 36.73 -- 363.27

12/11/07 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 36.66 -- 363.34

03/05/08 4.4 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 36.79 -- 363.21

06/23/08 1.5 <1.0 <1.0 <2.0 <100 <250 <400 -- -- -- -- -- 37.07 -- 362.93

09/23/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.12 -- 362.88

12/08/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 36.20 -- 363.80

03/10/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.52 -- 362.48

06/11/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.42 -- 362.58

09/16/09 -- -- -- -- -- -- -- -- -- -- -- -- 37.45 -- 362.55

12/01/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.49 -- 362.51

03/11/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.30 -- 362.70

12/07/11 -- -- -- -- -- -- -- -- -- -- -- -- 36.09 -- 363.91

05/08/13 <0.35 <1 <1 <3 <100 <50 <250 3.30 <1 <0.00999 27 -- 36.01 -- 363.99

08/20/13 <1 <1 <1 <3 <100 -- -- 3.81 <1 <0.01 14 -- 36.24 -- 363.76

02/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 37.04 -- 362.96

02/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 37.00 -- 363.00

5 1,000 700 1,000 800/1,0004 500 500 15 20 0.01 5

MW-1A(upper)

MW-1B(lower)

Well Abandoned

MW-1(lower)

MW-2(lower)

MTCA Method A CUL

TABLE 2

Groundwater Monitoring and Analytical Results

Date7


GroundwaterElevation

(feet MSL)1

Seattle, Washington

Depth toGroundwater

(feet btoc)

Groundwater Concentrations(µg/L)


TotalLead

(µg/L)

Sample ID& Zone

Depth toProduct

(feet btoc)

ProductThickness

(feet)

All Concentrations Reported in Micrograms per Liter ( µg/L)


MTBE EDB EDC


BenzeneTotal


TABLE 2


Date7



(feet MSL)1

Seattle, Washington

Depth toGroundwater

(feet btoc)



TotalLead

(µg/L)

Sample ID& Zone

Depth toProduct

(feet btoc)

ProductThickness

(feet)


11/19/07 -- -- -- -- -- -- -- -- -- -- -- -- 36.45 -- 363.33

12/11/07 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 36.41 -- 363.37

03/05/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 36.42 -- 363.36

06/23/08 <1.0 <1.0 <1.0 <2.0 <100 <250 <400 -- -- -- -- -- 36.56 -- 363.22

09/23/08 NR NR NR NR NR -- -- -- -- -- -- -- 36.77 -- 363.01

12/08/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 35.67 -- 364.11

03/10/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 23.63 -- 376.15

06/11/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.04 -- 362.74

06/25/09 -- -- -- -- -- -- -- -- -- -- -- -- 37.12 -- 362.66

09/16/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- 27 -- -- -- -- 37.16 -- 362.62

12/01/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.09 -- 362.69

03/11/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.00 -- 362.78

09/19/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 36.56 -- 363.22

12/15/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 36.88 -- 362.90

03/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 36.34 -- 363.44

06/24/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.59 -- 364.19

09/20/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.46 -- 364.32

12/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.83 -- 363.95

03/01/12 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 36.15 -- 363.63

06/06/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 36.04 -- 363.74

08/22/12 <1 <1 <1 <3 <100 -- -- 2.35 <1 <0.01 <1 -- 36.12 -- 363.66

11/07/12 <0.35 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 36.36 -- 363.42

02/07/13 -- -- -- -- -- -- -- -- -- -- -- -- 36.12 -- 363.66

05/08/13 -- -- -- -- -- -- -- -- -- -- -- -- 35.86 -- 363.92

02/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 36.71 -- 363.07

02/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 36.67 -- 363.11

09/26/07 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 28.19 -- 369.10

11/19/07 -- -- -- -- -- -- -- -- -- -- -- -- 28.32 -- 368.97

12/11/07 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 27.95 -- 369.34

03/05/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 28.05 -- 369.24

06/23/08 <1.0 <1.0 <1.0 <2.0 <100 260 450 -- -- -- -- -- 28.40 -- 368.89

09/22/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 28.60 -- 368.69

12/08/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 27.31 -- 369.98

03/10/09 -- -- -- -- -- -- -- -- -- -- -- -- 16.30 -- 380.99

06/25/09 -- -- -- -- -- -- -- -- -- -- -- -- 28.73 -- 368.56

09/16/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- 31 -- -- -- -- 28.80 -- 368.49

12/01/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 28.93 -- 368.36

03/11/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 28.18 -- 369.11

06/16/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 27.98 -- 369.31

09/19/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 28.15 -- 369.14

12/15/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 28.37 -- 368.92

03/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 27.61 -- 369.68

06/24/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 27.29 -- 370.00

09/20/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 27.74 -- 369.55

12/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 28.10 -- 369.19

02/29/12 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 28.25 -- 369.04

06/06/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 28.00 -- 369.29

08/22/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 28.65 --

12/6/20126 <1 <1 <1 <3 <100 -- -- 11.90 <1 <0.01 <1 -- 29.04 -- 368.25

02/07/13 <0.35 <1 <1 <3 <100 -- -- 8.00 <1 <0.01 <1 -- 28.55 -- 368.74

05/08/13 <0.35 <1 <1 <3 <100 <50 <250 20.7 <1 <0.00987 <1 -- 28.55 -- 368.74

08/20/13 <1 <1 <1 <3 <100 -- -- 17.9 -- -- -- -- 28.82 -- 368.47

11/26/13 <1 <1 <1 <3 <100 -- -- 98.5 -- -- -- -- 29.24 -- 368.05

02/25/14 <1.00 <1.00 <1.00 <2.00 <50.0 -- -- 28.2 -- -- -- -- 29.41 -- 367.88

02/28/14

09/26/07 1,200 3,400 1,500 7,200 38,000 -- -- -- -- -- -- -- 31.54 -- 369.75

11/19/07 -- -- -- -- -- -- -- -- -- -- -- -- 31.67 -- 369.62

12/11/07 2,700 1,200 1,400 5,400 32,000 -- -- -- -- -- -- -- 31.49 -- 369.80

03/05/08 1,900 2,100 1,300 5,200 33,000 -- -- -- -- -- -- -- 31.23 -- 370.06

06/23/08 2,200 930 1,400 4,100 27,000 <250 <400 -- -- -- -- -- 31.81 -- 369.48

09/23/08 2,400 1,500 890 2,800 19,000 -- -- -- -- -- -- -- 31.94 -- 369.35

12/08/08 2,900 1,100 1,700 5,000 31,000 -- -- -- -- -- -- -- 30.82 -- 370.47

03/10/09 3,700 2,200 2,300 8,900 52,000 -- -- -- -- -- -- -- 32.20 -- 369.09

06/11/09 -- -- -- -- -- -- 32.15 32.38 0.23 369.08

06/25/09 -- -- -- -- -- -- 32.16 32.39 0.23 369.07

09/16/09 -- -- -- -- -- -- 32.10 32.61 0.51 369.0601/14/10 -- -- -- -- -- -- 32.30 32.40 0.10 368.9601/21/10 -- -- -- -- -- -- 32.33 32.38 0.05 368.9501/28/10 -- -- -- -- -- -- 31.80 32.15 0.35 369.40

03/11/10 -- -- -- -- -- -- 31.95 32.08 0.13 369.31

09/19/10 -- -- -- -- -- -- 31.38 31.61 0.23 369.85

12/15/10 -- -- -- -- -- -- 31.58 31.72 0.14 369.67

03/07/11 31.08 31.30 0.22 370.15

06/24/11 850 3,100 1,700 13,000 92,000 -- -- -- -- -- -- -- 30.89 -- 370.40

09/20/11 840 1,200 2,000 11,000 15,000 -- -- -- -- -- -- -- 31.02 -- 370.27

12/07/11 790 250 1,300 6,800 130,000 -- -- -- -- -- -- -- 31.34 -- 369.95

02/29/12 610 74 770 2,500 19,000 -- -- -- -- -- -- -- 31.52 -- 369.77

06/07/12 1,200 150 1,100 3,000 24,000 -- -- 3.60 <1 0.81ve 32 -- 31.33 -- 369.96

06/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 31.33 -- 369.96

06/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 31.33 -- 369.96

08/23/12 630 380 1,400 6,400 59,000 -- -- 585 <1 <0.01 8.5 -- 32.18 -- 369.11

11/08/12 180 <100 800 4,900 33,000 -- -- 53.2 <1 <0.01 <1 -- 32.49 -- 368.80

02/07/13 21 7.9 950 8 3,560 8 37,000 -- -- 338 <1 <0.01 <1 -- 32.68 -- 368.61

05/08/13 4.0 1.2 180 8 910 8 20,000 120,000 x 1,200 x 79.4 <1 <0.00993 <1 -- 32.33 -- 368.96

08/20/13 <1 36 19 80 15,000 7,200 x, s <250 s 12.1 <1 <0.01 <1 -- 32.09 -- 369.20

11/26/13 <5 80 67 110 23,000 -- -- 26.9 -- -- -- -- 32.63 -- 368.66

02/25/14 <1.00 <1.00 30.5 36.2 84,600 12,100 x 138 195 -- -- -- -- 31.75 -- 369.54

02/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 32.46 -- 368.83

5 1,000 700 1,000 800/1,0004 500 500 15 20 0.01 5

MW-3(lower)

LNAPL = 0.14 feet

LNAPL = 0.05 feet

LNAPL = 0.23 feet

MW-4(upper)

Well Abandoned

LNAPL = 0.35 feet

LNAPL = 0.23 feet

LNAPL = 0.51 feet

LNAPL = 0.23 feet

MTCA Method A CUL

MW-51

(upper)

LNAPL = 0.13 feet

LNAPL = 0.10 feet

LNAPL = 0.22 feet


MTBE EDB EDC


BenzeneTotal


TABLE 2


Date7



(feet MSL)1

Seattle, Washington

Depth toGroundwater

(feet btoc)



TotalLead

(µg/L)

Sample ID& Zone

Depth toProduct

(feet btoc)

ProductThickness

(feet)


09/26/07 15,000 42,000 4,200 25,400 230,000 -- -- -- -- -- -- -- 31.08 -- 370.53

11/19/07 -- -- -- -- -- -- -- -- -- -- -- -- 31.24 -- 370.37

12/11/07 16,000 44,000 5,200 37,700 250,000 -- -- -- -- -- -- -- 31.18 -- 370.43

03/05/08 15,000 38,000 4,100 23,100 210,000 -- -- -- -- -- -- -- 31.21 -- 370.40

06/23/08 12,000 33,000 4,400 25,600 150,000 24,000 1,100 -- -- -- -- -- 31.45 -- 370.16

09/23/08 1,700 2,600 970 4,300 31,000 -- -- -- -- -- -- -- 29.98 -- 371.63

12/08/08 NR NR NR NR NR -- -- -- -- -- -- -- 27.79 -- 373.82

03/10/09 -- -- -- -- -- -- 31.30 33.55 2.25 369.72

06/25/09 -- -- -- -- -- -- 31.31 33.25 1.94 369.79

09/16/09 -- -- -- -- -- -- 31.28 33.25 1.97 369.81

03/11/10 -- -- -- -- -- -- 31.42 33.55 2.13 366.48

09/19/10 -- -- -- -- -- -- 31.04 31.60 0.56 369.59

12/15/10 -- -- -- -- -- -- 31.17 31.51 0.34 369.85

03/07/11 30.00 30.12 0.12 371.40

06/23/11 3,800 19,000 2,400 19,000 130,000 -- -- -- -- -- -- -- 30.70 -- 370.91

09/20/11 7,500 17,000 2,900 24,000 140,000 -- -- -- -- -- -- -- 30.45 -- 371.16

12/07/11 7,400 25,000 2,900 24,000 290,000 -- -- -- -- -- -- -- 30.72 -- 370.89

02/29/12 7,900 22,000 2,400 19,000 120,000 -- -- -- -- -- -- -- 30.99 -- 370.62

06/07/12 5,100 11,000 <1,000 15,000 110,000 -- -- 58.7 -- -- -- -- 30.96 -- 370.65

06/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 30.96 -- 370.65

06/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 30.96 -- 370.65

08/23/12 8,200 28,000 3,000 23,000 170,000 -- -- 58.8 <1 <0.01 15 -- 31.15 -- 370.46

11/08/12 2,400 26,000 8,600 89,000 740,000 -- -- 198 <1,000 25ve <1,000 -- 31.97 -- 369.64

02/08/13 580 4,100 <1,000 22,800 120,000 -- -- -- <1,000 14ve <1,000 -- 32.53 -- 369.08

05/08/13 68 180 140 5,700 77,000 140,000 x 2,100 x 117 <100 1.14 <100 -- 31.69 -- 369.92

08/20/13 5.6 19 32 650 24,000 7,900 x, s <250 s 14.1 <1 0.11 jr <1 -- 31.13 -- 370.48

11/26/13 85 22 51 450 15,000 -- -- 53.6 -- -- -- -- 31.71 -- 369.90

02/25/14 564 19.5 110 691 11,800 16,400 x 477 69.1 -- -- -- -- 31.74 -- 369.87

02/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 32.44 -- 369.17

09/26/07 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.71 -- 363.53

11/19/07 -- -- -- -- -- -- -- -- -- -- -- -- 37.95 -- 363.29

12/11/07 <4.0 <4.0 <4.0 <8.0 <400 -- -- -- -- -- -- -- 37.85 -- 363.39

03/05/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.93 -- 363.31

06/23/08 <1.0 <1.0 <1.0 <2.0 <100 <250 440 -- -- -- -- -- 38.11 -- 363.13

09/22/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 38.22 -- 363.02

12/08/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.12 -- 364.12

03/10/09 -- -- -- -- -- -- -- -- -- -- -- -- 38.55 -- 362.69

05/13/10 -- -- -- -- -- -- -- -- -- -- -- -- 38.02 -- 363.22

06/25/09 -- -- -- -- -- -- -- -- -- -- -- -- 38.55 -- 362.69

12/01/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 38.48 -- 362.76

06/16/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 37.98 -- 363.26

12/07/11 -- -- -- -- -- -- -- -- -- -- -- -- 37.35 -- 363.89

05/08/13 <0.35 <1 <1 <3 <100 <50 <250 4.38 <1 <0.00990 <1 -- 37.29 -- 363.95

02/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 37.99 -- 363.25

02/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 38.11 -- 363.13

09/26/07 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 29.80 -- 368.88

11/19/07 -- -- -- -- -- -- -- -- -- -- -- -- 29.86 -- 368.82

12/11/07 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 29.27 -- 369.41

03/05/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 29.67 -- 369.01

06/23/08 <1.0 <1.0 <1.0 <2.0 <100 <250 <400 -- -- -- -- -- 30.05 -- 368.63

09/23/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 30.20 -- 368.48

12/09/08 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 29.19 -- 369.49

03/10/09 -- -- -- -- -- -- -- -- -- -- -- -- 30.45 -- 368.23

06/25/09 -- -- -- -- -- -- -- -- -- -- -- -- 30.37 -- 368.31

09/16/09 <1.0 2.5 1.1 7.2 <100 -- -- <1.1 -- -- -- -- 30.43 -- 368.25

12/01/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 30.51 -- 368.17

03/11/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 29.95 -- 368.73

09/19/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 29.82 -- 368.86

12/15/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 30.02 -- 368.66

03/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 29.35 -- 369.33

06/24/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 29.05 -- 369.63

09/20/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 29.39 -- 369.29

12/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 29.69 -- 368.99

03/01/12 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 29.86 -- 368.82

06/06/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 1.5 -- 29.58 -- 369.10

08/22/12 <1 <1 <1 <3 <100 -- -- 2.15 <1 <0.01 2.4 -- 30.34 -- 368.34

11/07/12 <0.35 <1 <1 <3 <100 -- -- 2.10 <1 <0.01 <1 -- 30.70 -- 367.98

02/07/13 -- -- -- -- -- -- -- -- -- -- -- -- 30.40 -- 368.28

05/08/13 -- -- -- -- -- -- -- -- -- -- -- -- 30.38 -- 368.30

08/20/13 -- -- -- -- -- -- -- -- -- -- -- -- 30.54 -- 368.14

11/26/13 -- -- -- -- -- -- -- -- -- -- -- -- 30.92 -- 367.76

02/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 31.09 -- 367.59

02/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 31.00 -- 367.68

5 1,000 700 1,000 800/1,0004 500 500 15 20 0.01 5

LNAPL = 1.97 feet

MW-61

(upper)

LNAPL = 1.94 feet

LNAPL = 2.25 feet

MTCA Method A CUL

MW-8(upper)

LNAPL = 2.13 feet

MW-7(lower)

LNAPL = 0.56 feet

LNAPL = 0.12 feet

LNAPL = 0.34 feet


MTBE EDB EDC


BenzeneTotal


TABLE 2


Date7



(feet MSL)1

Seattle, Washington

Depth toGroundwater

(feet btoc)



TotalLead

(µg/L)

Sample ID& Zone

Depth toProduct

(feet btoc)

ProductThickness

(feet)


09/22/08 15,000 1,400 1,800 6,400 36,000 -- -- -- -- -- -- -- 30.19 -- 369.6012/09/08 13,000 520 1,500 4,020 24,000 -- -- -- -- -- -- -- 29.21 -- 370.5803/10/09 13,000 1,400 2,100 8,000 42,000 <250 <400 -- -- -- -- -- 30.43 -- 369.3606/11/09 9,400 520 1,600 5,900 34,000 <1,300 <400 -- -- -- -- -- 30.40 -- 369.3906/25/09 -- -- -- -- -- -- -- -- -- -- -- -- 30.31 -- 369.4809/16/09 1,200 410 1,800 6,100 33,000 -- -- 16 -- -- -- -- 30.40 -- 369.3912/01/09 13,000 2,100 2,800 13,800 65,000 -- -- -- -- -- -- -- 30.48 -- 369.3103/11/10 15,000 970 3,100 12,100 60,000 -- -- -- -- -- -- -- 30.20 -- 369.5906/16/10 -- -- -- -- -- -- 29.74 30.35 0.61 369.8909/19/10 -- -- -- -- -- -- 29.69 30.30 0.61 369.9412/15/10 -- -- -- -- -- -- 29.91 30.41 0.50 369.7503/07/11 -- -- -- -- -- -- 29.55 30.10 0.55 370.1006/23/11 -- -- -- -- -- -- 29.35 29.45 0.10 370.4109/20/11 -- -- -- -- -- -- 29.17 29.39 0.22 370.5612/07/11 -- -- -- -- -- -- 29.42 29.64 0.22 370.3102/29/12 -- -- -- -- -- -- 29.59 30.05 0.46 370.0806/06/12 540 11,000 3,700 43,000 330,000 -- -- 188,000 -- -- -- -- 29.46 -- 370.3306/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 29.46 -- 370.3306/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 29.46 -- 370.3308/22/12 -- -- -- -- -- -- 31.10 31.67 0.57 368.5411/08/12 830 860 1,400 9,300 53,000 -- -- 6.44 <1 0.44ve 86 -- 32.19 -- 367.6002/07/13 53 13 150 430 32,000 -- -- -- -- -- -- -- 32.46 -- 367.3305/08/13 13 5.5 53 130 2,400 1,400 x <250 10.9 <1 <0.00993 19 -- 31.91 -- 367.8808/20/13 <1 6.6 <1 3.4 500 4000 x,s <250 s 11.2 <1 <0.01 13 -- 31.80 -- 367.9911/26/13 2.5 4.6 3.5 6.2 570 -- -- 12.5 -- -- -- -- 32.00 -- 367.7902/25/14 2.16 <1.00 4.64 8.67 887 3,650 x <100 26.2 -- -- -- -- 32.94 -- 366.8502/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 33.65 -- 366.14

09/22/08 10,000 14,000 3,800 19,000 130,000 -- -- -- -- -- -- -- 34.75 -- 369.9512/09/08 8,600 10,000 3,000 14,200 92,000 -- -- -- -- -- -- -- 32.11 -- 372.5903/10/09 9,000 15,000 3,100 16,000 110,000 <400 600 -- -- -- -- -- 34.53 -- 370.1706/11/09 6,000 6,800 1,900 9,500 68,000 -- -- -- -- -- -- -- 34.64 -- 370.0606/25/09 -- -- -- -- -- -- -- -- -- -- -- -- 34.64 -- 370.0609/16/09 9,100 14,000 3,100 16,200 110,000 -- -- 170 -- -- -- -- 34.56 -- 370.1412/01/09 7,400 13,000 2,600 14,000 89,000 -- -- -- -- -- -- -- 34.60 -- 370.1003/11/10 9,900 22,000 5,300 29,600 290,000 -- -- -- -- -- -- -- 34.48 -- 370.2206/16/10 -- -- -- -- -- -- 33.90 34.80 0.90 370.5709/19/10 -- -- -- -- -- -- 33.96 34.01 0.05 370.7312/15/10 -- -- -- -- -- -- 33.95 34.01 0.06 370.7303/07/11 -- -- -- 33.79 33.89 0.10 370.8806/23/11 3,800 12,000 2,300 15,000 120,000 -- -- -- -- -- -- -- 33.58 -- 371.1209/20/11 -- -- -- -- -- -- 33.27 33.47 0.20 371.3812/07/11 -- -- -- -- -- -- 33.56 33.58 0.02 371.1302/29/12 4,200 16,000 2,500 19,000 97,000 -- -- -- -- -- -- -- 33.84 -- 370.8606/06/12 2,300 14,000 1,900 23,000 140,000 -- -- 52.9 -- -- -- -- 33.91 -- 370.7906/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 33.91 -- 370.7906/20/12 -- -- -- -- -- -- -- -- -- -- -- -- 33.91 -- 370.7908/23/12 4,400 9,700 2,600 15,000 100,000 -- -- 32.2 <1 <0.01 7.1 -- 33.62 -- 371.0811/08/12 6,000 40,000 17,000 125,000 97,000 -- -- 35.5 <2,000 2.2ve <2,000 -- 34.35 -- 370.3502/07/13 4,000 23,000 9,600 52,000 190,000 -- -- 23.3 <1000 0.73ve <1000 -- 34.24 -- 370.46

05/08/13 2,800 12,000 3,200 20,000 120,000 33,000 x 320 x 11.8 <200 1.49 <200 -- 34.09 -- 370.61

08/20/13 2,200 7,000 2,800 15,000 120,000 32,000 x,s <250 s 5.01 <1 1.5 jr 47 -- 33.70 -- 371.00

11/26/13 2,200 3,700 1,900 10,000 75,000 -- -- 4.28 -- -- -- -- 34.11 -- 370.5902/25/14 2,180 2,510 2,360 9,550 51,200 20,000 x 452 7.74 -- -- -- -- 34.16 -- 370.5402/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 34.19 -- 370.51

12/01/09 15 <4.0 44 21 3,800 -- -- -- -- -- -- -- 39.12 -- 369.7103/12/10 4.9 <1.0 7.6 2.2 900 -- -- -- -- -- -- -- 38.81 -- 370.0206/22/10 1.3 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 38.13 -- 370.7009/19/10 1.1 0.50 1.2 0.95 <250 -- -- -- -- -- -- -- 38.17 -- 370.6612/15/10 1.2 <0.50 3.5 <0.50 420 -- -- -- -- -- -- -- 38.55 -- 370.2803/07/11 <0.50 <0.50 <0.50 2.70 <250 -- -- -- -- -- -- -- 38.02 -- 370.8106/23/11 0.72 <0.50 1.6 <0.50 <250 -- -- -- -- -- -- -- 37.15 -- 371.6809/20/11 0.93 1.0 2.8 3.1 320 -- -- -- -- -- -- -- 37.42 -- 371.4112/08/11 1.6 <0.50 13 4.8 710 -- -- -- -- -- -- -- 37.87 -- 370.9603/01/12 0.53 <0.50 3.0 0.80 <250 -- -- -- -- -- -- -- 38.25 -- 370.5806/07/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 37.88 -- 370.9508/23/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 36.19 -- 372.6411/08/12 <0.35 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 37.37 -- 371.4602/07/13 <0.35 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 37.20 -- 371.6305/08/13 <0.35 <1 <1 <3 <100 <50 <250 <1 <1 <0.00999 <1 -- 37.09 -- 371.7408/20/13 -- -- -- -- -- -- -- -- -- -- -- -- 37.44 -- 371.3911/26/13 -- -- -- -- -- -- -- -- -- -- -- -- 38.00 -- 370.8302/25/14 <1.00 <1.00 <1.00 <2.00 <50.0 -- -- 10.5 -- -- -- -- 38.36 -- 370.4702/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 38.40 -- 370.43

12/01/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 36.30 -- 370.1203/12/10 3.7 <1.0 6.1 2.3 660 -- -- -- -- -- -- -- 35.75 -- 370.6705/13/10 -- -- -- -- -- -- -- -- -- -- -- -- 35.44 -- 370.9806/22/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 35.36 -- 371.0609/19/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.26 -- 371.1612/15/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.84 -- 370.5803/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.20 -- 371.2206/24/11 <0.50 <0.50 <0.50 0.79 <250 -- -- -- -- -- -- -- 34.38 -- 372.0409/21/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 34.72 -- 371.7012/08/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.13 -- 371.2903/01/12 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 35.54 -- 370.8806/07/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 35.36 -- 371.0608/22/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 35.03 -- 371.3911/07/12 <0.35 <1 <1 <3 <100 -- -- 1.41 <1 <0.01 <1 35.32 -- 371.1002/07/13 -- -- -- -- -- -- -- -- -- -- -- -- 34.98 -- 371.4405/08/13 <0.35 <1 <1 <3 <100 <50 <250 3.72 <1 <0.00992 <1 -- 34.70 -- 371.7208/20/13 <1 <1 <1 <3 <100 -- -- 1.07 -- -- -- -- 34.94 -- 371.4811/26/13 -- -- -- -- -- -- -- -- -- -- -- -- 35.47 -- 370.9502/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 35.89 -- 370.5302/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 35.98 -- 370.44

5 1,000 700 1,000 800/1,0004 500 500 15 20 0.01 5

LNAPL = 0.55 feet

LNAPL = 0.61 feet

MW-91

(upper)

LNAPL = 0.57 feet

LNAPL = 0.10 feet

LNAPL = 0.20 feet

LNAPL = 0.22 feetLNAPL = 0.10 feet

LNAPL = 0.50 feet


LNAPL = 0.61 feet


LNAPL = 0.02 feet

MTCA Method A CUL

MW-12(upper)

MW-10(upper)

MW-11(upper)

LNAPL = 0.90 feet


MTBE EDB EDC


BenzeneTotal


TABLE 2


Date7



(feet MSL)1

Seattle, Washington

Depth toGroundwater

(feet btoc)



TotalLead

(µg/L)

Sample ID& Zone

Depth toProduct

(feet btoc)

ProductThickness

(feet)


12/01/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 22.06 -- 365.3703/12/10 1.4 <1.0 1.9 1.1 260 -- -- -- -- -- -- -- 21.46 -- 365.9706/22/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 21.11 -- 366.3209/19/10 <0.50 5.7 4.4 30 <250 -- -- -- -- -- -- -- 20.98 -- 366.4512/15/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 21.52 -- 365.9103/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 20.94 -- 366.4906/24/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 20.39 -- 367.0409/21/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 21.38 -- 366.0512/08/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 19.83 -- 367.6002/29/12 <0.50 0.56 <0.50 0.71 <250 -- -- -- -- -- -- -- 20.13 -- 367.3006/07/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 10 -- 20.12 -- 367.3108/22/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 15 -- 21.05 -- 366.3811/08/12 <0.35j <5 <5 <15 <100 -- -- <1 <5 <0.01 17 -- 20.18 -- 367.2502/14/13 <0.35 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- -- -- --05/08/13 <0.35 <1 <1 <3 <100 290 x <250 1.17 <1 <0.00993 6.4 -- 20.77 -- 366.6608/20/13 <1 <1 <1 <3 <100 <50 s <250 s <1 <1 <0.01 13 -- 21.27 -- 366.1611/26/13 <1 <1 <1 <3 <100 -- -- 1.36 -- -- -- -- 21.51 -- 365.9202/25/14 <1.00 <1.00 <1.00 <2.00 <50.0 -- -- 6.59 <1.00 <0.00977 8.59 -- 21.53 -- 365.9002/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 21.70 -- 365.73

12/01/09 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- -- 26.70 -- 370.33

03/12/10 3.4 <1.0 5.6 1.7 590 -- -- -- -- -- -- -- 25.80 -- 371.2306/22/10 <1.0 <1.0 <1.0 <2.0 <100 -- -- -- -- -- -- 25.47 -- 371.5609/19/10 <0.5 1.0 3.3 26 <250 -- -- -- -- -- -- -- 25.59 -- 371.4412/15/10 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 26.08 -- 370.9503/07/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 25.00 -- 372.0306/24/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 24.47 -- 372.5609/21/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 25.07 -- 371.9612/08/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 25.46 -- 371.5703/01/12 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 25.80 -- 371.2306/07/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 25.45 -- 371.5808/02/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 25.43 -- 371.6011/07/12 <0.35 <1 <1 <3 <100 -- -- 2.20 <1 <0.01 <1 -- 25.81 -- 371.2202/07/13 -- -- -- -- -- -- -- -- -- -- -- -- 25.30 -- 371.7305/08/13 <0.35 <1 <1 <3 <100 <50 <250 10.3 <1 <0.00995 <1 -- 25.02 -- 372.0108/20/13 -- -- -- -- -- -- -- -- -- -- -- -- 25.30 -- 371.7311/26/13 -- -- -- -- -- -- -- -- -- -- -- -- 25.87 -- 371.1602/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 26.38 -- 370.6502/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 26.43 -- 370.60

06/24/11 <0.50 <0.50 0.61 2.6 <250 -- -- -- -- -- -- -- 30.28 -- 370.5709/21/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 30.72 -- 370.1312/08/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 31.09 -- 369.7603/01/12 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 31.32 -- 369.5306/06/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 31.08 -- 369.7708/23/12 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 31.69 -- 369.16

12/6/20126 <1 <1 <1 <3 <100 -- -- <1 <1 <0.01 <1 -- 32.09 -- 368.76

05/08/13 <0.35 <1 <1 <3 <100 <50 <250 32.4 <1 <0.0100 <1 -- 31.61 -- 369.24

08/20/13 <1 <1 <1 <3 <100 -- -- 27.7 -- -- -- -- 31.73 -- 369.12

11/26/13 -- -- -- -- -- -- -- -- -- -- -- -- 32.25 -- 368.60

02/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 32.45 -- 368.40

02/28/14 -- -- -- -- -- -- -- -- -- -- -- -- 32.27 -- 368.58

12/08/11 <0.50 <0.50 <0.50 <0.50 <250 -- -- -- -- -- -- -- 37.28 -- --05/08/13 <0.35 <1 <1 <3 <100 <50 <250 4.69 <1 <0.00997 <1 -- 38.85 -- --08/20/13 -- -- -- -- -- -- -- -- -- -- -- -- 37.07 -- --02/24/14 -- -- -- -- -- -- -- -- -- -- -- -- 38.07 -- --

0T-1 2,3 11/05/08 5,100 19,000 2,000 13,100 93,000 <250 <400 18 -- -- -- -- -- -- --

11/26/13 63 440 <5 830 5,300 12,000 <250 73.6 <1 <0.01 <1 -- 37.90 -- --02/25/14 <1.00 <1.00 1.64 <2.00 191 -- -- 58.6 -- -- -- -- 38.15 -- --

5 1,000 700 1,000 800/1,0004 500 500 15 20 0.01 5

µg/LTPH-G MW-1A 33 23 to 33 399.95TPH-D MW-1B 43 38 to 43 400.01TPH-O MW-2 45 40 to 45 400.00

btoc MW-3 40 36.5 to 41.5 399.78MW-4 32 12 to 32 397.29

LNAPL = Light Non-Aqueous Phase Liquid (product) MW-5 34 14 to 34 401.29MSL MW-6 34 14 to 34 401.61NR MW-7 43 38 to 43 401.24< MW-8 32 12 to 32 398.68

MTCA MW-9 34 24 to 34 399.79CUL MW-10 35 25 to 35 404.70

ve = estimated concentration calculated for an analyte response above the valid instrument calibration range. Dilution is required to obtain MW-11 42 32 to 42 408.83MW-12 42 32 to 42 406.42

j = the result is below normal reporting limits. The value reported is an estimate. MW-13 27 16.5 to 26.5 387.43x = The sample chromatographic pattern does not resemble the fuel standard used for quantitation. MW-14 31 21 to 31 397.03s = sample extracts passed through silica gel column prior to analysis MW-15 35 25 to 35 400.85

pc =The sample was received in a container not approved by the method. The value reported should be considered an estimate. EW-1 35 25 to 35 401.22jr = The relative percent difference result in the laboratory control sample associated with the analyte is out of control limits. The value reported EW-2 34 24 to 34 NS

should be considered an estimate. EW-3 34 24 to 34 NSNotes:

1 EW-4 34 24 to 34 NSEW-5 33 23 to 33 NS

2 EW-6 40 27.5 to 40 NS3

4

5

6 = Monitoring wells MW-4 and MW-15 were resampled on 12/6/12 due to sampling error. Groundwater elevation is reading recorded on 11/7/12.7 = Groundwater samples were collected by bailer until the 1st quarter 2012. A submersible low flow pump was used to collect groundwater samples from 1st through 4th quarter 2012.

8 = Diluted concentrations were used to report ethylbenzene and total xylenes at MW-5 on 2/7/13 and 5/08/13 due to the estimated concentrations obtained for these analytes in the undiluted sample.NS = Not Surveyed

Bold = analytical result exceeds the specified MTCA Method A CUL

ScreenedInterval

(feet bgs)

TOCElevation

(feet)

Total WellDepth

(feet bgs)

MW-165

Well No.= micrograms per liter

MW-13(upper)

MTCA Method A CUL

MW-14(upper)

MW-15(upper)

EW-6

= total petroleum hydrocarbons in the diesel range

= analyte not reported above the specified laboratory practical quantitation limit

= total petroleum hydrocarbons in the gasoline range

= When LNAPL is present, GW elevation is corrected using casing elevation - [DTW-(product thickness*Specific Gravity)], where Specific Gravity (SpG) = 0.739,

= sample collected from inside an orphan UST= the following was also reported in OT-1:dissolved lead at 6.6 mg/L.

Groundwater sample collection returned to bailers in the 1st quarter 2013.

Explanation of Abbreviations:

= total petroleum hydrocarbons in the oil and grease range= below top of casing (top of casing elevations are relative to a

City of Seattle benchmark)

= not reported, suspect results likely due to samplng or laboratory error

= the TPH-G CUL is reduced from 1,000 µg/L to 800 µg/L if benzene is present in the sample= well installed by Exxon-Mobile consultant.

= Cleanup Level

an accurate quantification of the analyte.

= Model Toxics Control Act

SpG based on published average value for unleaded gasoline.

= mean sea level



FIGURES


APPENDIX ASTANTEC MONITORING WELL PURGING AND SAMPLING PROCEDURES

UNDERGROUND STORAGE SYSTEM REPLACEMENT REPORT7-Eleven Store No. 23020

Stantec Project No. 185750189

May 30, 2014

STANTEC MONITORING WELL PURGING AND SAMPLING PROCEDURES

Monitoring well purging and sampling was conducted using U.S. Environmental Protection Agency (EPA)approved low-flow sampling techniques.

Purging Procedures

A. Using a decontaminated instrument (i.e., tape measure, continuity meter, or interface probe) measurethe depth to groundwater in reference to the measuring point at the top of the casing. Measure the totaldepth of the well to calculate the height and volume of water in the borehole.

B. Based on previously obtained data, if a monitoring well is suspected of containing LPH concentrations,lower a transparent bailer into the well to evaluate the presence of a hydrocarbon sheen on the watertable.

C. Decontaminate the purge pump and/or PVC bailers by scrubbing in Alconox detergent solution,followed by a tap water rinse and then a deionized water rinse.

D. Purge, by low-flow pumping (less than 0.5 liters per minute) for approximately five minutes. If low-flowpurging is not possible and bailing is used to purge the well, then a minimum of three well volumes willbe removed. If the well goes dry, the procedure listed in step E2 (below) should be followed.Parameters should be measured after each ½-casing volume is removed.

E. Conduct field measurements (i.e., pH, specific conductivity, temperature, and oxidation-reductionpotential) note clarity, color, turbidity, and odor of purge water, and measure depth to groundwater.

1. If the well has not been purged dry, continue to pump and conduct field measurements(including depth to water) again every five minutes during purging.

a) If the first through third series of measurements vary by less than 10 percent, the wellhas been adequately purged. Allow the well to recover to 80 percent of its staticcondition and begin the sampling procedure.

b) If the measurements vary by 10 percent or greater, repeat Step E1 above.

c) If a minimum of three parameters cannot be measured during purging, remove threewell volumes prior to sampling.

2. If the wells has been purged dry, measure the water level and allow the well to recharge to 80percent, or for two hours, whichever occurs first. Calculate the percent recovery, and begin thesampling procedure.

Sampling Procedures

Use the pump to collect the groundwater sample.

Transfer the groundwater sample into the appropriate container(s). Where applicable, some containersare completely filled to achieve zero headspace. Label the samples according to location and date ofcollection.

Enter the samples into Chain-of-Custody and preserve on ice until delivery to the analytical laboratory.Complete the Well Development or Purging/Sampling Log to be stored in the project file.

When requested by the client, collect a bailer rinse blank of deionized water to check decontaminationprocedure. In addition, trip blanks prepared by the laboratory and kept with the samples may be included tocheck for cross contamination of samples within the cooler. Additional and/or alternate QA/QC samples canbe collected and analyzed upon client request.


APPENDIX BGROUNDWATER MONITORING FIELD NOTES



May 30, 2014


APPENDIX CLABORATORY REPORTS AND CHAIN-OF-CUSTODY DOCUMENTATION



May 30, 2014

March 22, 2014

Stantec Consulting CorporationPaul Fairbairn

Attention Paul Fairbairn:

RE: 7-Eleven Store 23030 Orphan UST RemovalLab ID: 1403066

11130 NE 33rd Pl, Suite 200Bellevue, WA 98004

3600 Fremont Ave. N.Seattle, WA 98103

T: (206) 352-3790F: (206) 352-7178

[email protected]

Fremont Analytical, Inc. received 2 sample(s) on 3/6/2014 for the analyses presented in the following report.

Michael Dee

This report consists of the following:

- Case Narrative - Analytical Results - Applicable Quality Control Summary Reports - Chain of Custody

All analyses were performed consistent with the Quality Assurance program of Fremont Analytical, Inc. Please contact the laboratory if you should have any questions about the results.

Thank you for using Fremont Analytical.

Sincerely,

Sr. Chemist / Principal

Diesel and Heavy Oil by NWTPH-Dx/Dx Ext.Gasoline by NWTPH-GxPolyaromatic Hydrocarbons by EPA Method 8270 (SIM)Sample Moisture (Percent Moisture)Total Metals by EPA Method 6020Volatile Organic Compounds by EPA Method 8260

www.fremontanalytical.com

Page 1 of 16

mailto:[email protected]

http://www.fremontanalytical.com

03/22/2014Date:

Project: 7-Eleven Store 23030 Orphan UST RemovCLIENT: Stantec Consulting Corporation

Lab Order: 1403066

Work Order Sample Summary

Lab Sample ID Client Sample ID Date/Time ReceivedDate/Time Collected

1403066-001 ORPH-1@8' 03/04/2014 12:15 PM 03/06/2014 5:28 PM1403066-002 ORPH-2@10' 03/04/2014 1:45 PM 03/06/2014 5:28 PM

Note: If no "Time Collected" is supplied, a default of 12:00AM is assigned

Page 2 of 16

Project: 7-Eleven Store 23030 Orphan UST RemovCLIENT: Stantec Consulting Corporation

3/22/2014

Case Narrative1403066

Date:WO#:

I. SAMPLE RECEIPT:Samples receipt information is recorded on the attached Sample Receipt Checklist.

II. GENERAL REPORTING COMMENTS:Results are reported on a wet weight basis unless dry-weight correction is denoted in the units field on the analytical report ("mg/kg-dry" or "ug/kg-dry").

Matrix Spike (MS) and MS Duplicate (MSD) samples are tested from an analytical batch of "like" matrix to check for possible matrix effect. The MS and MSD will provide site specific matrix data only for those samples which are spiked by the laboratory. The sample chosen for spike purposes may or may not have been a sample submitted in this sample delivery group. The validity of the analytical procedures for which data is reported in this analytical report is determined by the Laboratory Control Sample (LCS) and the Method Blank (MB). The LCS and the MB are processed with the samples and the MS/MSD to ensure method criteria are achieved throughout the entire analytical process.

III. ANALYSES AND EXCEPTIONS:Exceptions associated with this report will be footnoted in the analytical results page(s) or the quality control summary page(s) and/or noted below.

Page 3 of 16

Project: 7-Eleven Store 23030 Orphan UST Removal

Client Sample ID: ORPH-1@8'

Collection Date: 3/4/2014 12:15:00 PM

Matrix: Soil

Client: Stantec Consulting Corporation

Lab ID: 1403066-001

Analyses Result Qual Units Date AnalyzedDFRL

Analytical Report

3/22/20141403066

Date Reported:WO#:

Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Analyst: PHBatch ID: 6839

Naphthalene 3/12/2014 1:40:00 PM57.9 µg/Kg-dry 1ND2-Methylnaphthalene 3/12/2014 1:40:00 PM57.9 µg/Kg-dry 1ND1-Methylnaphthalene 3/12/2014 1:40:00 PM57.9 µg/Kg-dry 1108 Surr: 2-Fluorobiphenyl 3/12/2014 1:40:00 PM50.4-142 %REC 1104 Surr: Terphenyl-d14 (surr) 3/12/2014 1:40:00 PM48.8-157 %REC 1111

Gasoline by NWTPH-Gx Analyst: GHBatch ID: R12945

Gasoline Range Organics C6-C12 D 3/10/2014 8:05:00 PM55.8 mg/Kg-dry 10117 Surr: 4-Bromofluorobenzene 3/8/2014 6:31:00 AM65-135 %REC 1133 Surr: Toluene-d8 3/8/2014 6:31:00 AM65-135 %REC 1102NOTES:GRO - Indicates the presence of unresolved compounds eluting from toluene to dodecane (~C7->C12).

Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6814

Methyl tert-butyl ether (MTBE) 3/8/2014 6:31:00 AM0.0558 mg/Kg-dry 1ND1,2-Dichloroethane 3/8/2014 6:31:00 AM0.0335 mg/Kg-dry 1NDBenzene 3/8/2014 6:31:00 AM0.0223 mg/Kg-dry 1NDToluene 3/8/2014 6:31:00 AM0.0223 mg/Kg-dry 1ND1,2-Dibromoethane (EDB) 3/8/2014 6:31:00 AM0.00558 mg/Kg-dry 1NDEthylbenzene 3/8/2014 6:31:00 AM0.0335 mg/Kg-dry 1NDm,p-Xylene 3/8/2014 6:31:00 AM0.0223 mg/Kg-dry 1NDo-Xylene 3/8/2014 6:31:00 AM0.0223 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/8/2014 6:31:00 AM63.7-129 %REC 196.1 Surr: Toluene-d8 3/8/2014 6:31:00 AM61.4-128 %REC 199.9 Surr: 1-Bromo-4-fluorobenzene 3/8/2014 6:31:00 AM63.1-141 %REC 1107

Total Metals by EPA Method 6020 Analyst: BRBatch ID: 6824

Lead 3/10/2014 6:09:31 PM0.164 mg/Kg-dry 13.74

Sample Moisture (Percent Moisture) Analyst: PHBatch ID: R12949

Percent Moisture 3/10/2014 2:04:00 PMwt% 115.5

Qualifiers: B Analyte detected in the associated Method Blank D Dilution was requiredE Value above quantitation range H Holding times for preparation or analysis exceededJ Analyte detected below quantitation limits ND Not detected at the Reporting Limit

RL Reporting Limit S Spike recovery outside accepted recovery limits

Page 4 of 16




Matrix: Soil


Lab ID: 1403066-002


Analytical Report

3/22/20141403066

Date Reported:WO#:

Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6888

Diesel Range Organics (C12-C24) 3/18/2014 12:04:00 PM24.0 mg/Kg-dry 1213Heavy Oil 3/18/2014 12:04:00 PM59.9 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/18/2014 12:04:00 PM50-150 %REC 1124 Surr: o-Terphenyl 3/18/2014 12:04:00 PM50-150 %REC 1116NOTES:DRO - Indicates the presence of unresolved compounds eluting from dodecane through tetracosane (C12-C24). Chromatogram suggests an unresolvable gasoline compound.


Naphthalene 3/12/2014 3:00:00 PM57.3 µg/Kg-dry 13,5602-Methylnaphthalene 3/12/2014 3:00:00 PM57.3 µg/Kg-dry 17,1501-Methylnaphthalene 3/12/2014 3:00:00 PM57.3 µg/Kg-dry 14,030 Surr: 2-Fluorobiphenyl 3/12/2014 3:00:00 PM50.4-142 %REC 198.9 Surr: Terphenyl-d14 (surr) 3/12/2014 3:00:00 PM48.8-157 %REC 1107


Gasoline Range Organics C6-C12 D 3/10/2014 8:34:00 PM107 mg/Kg-dry 20345 Surr: 4-Bromofluorobenzene D 3/10/2014 8:34:00 PM65-135 %REC 20125 Surr: Toluene-d8 3/8/2014 7:31:00 AM65-135 %REC 199.4NOTES:GRO - Indicates the presence of unresolved compounds eluting from toluene to dodecane (~C7->C12).


Methyl tert-butyl ether (MTBE) 3/8/2014 7:31:00 AM0.0535 mg/Kg-dry 1ND1,2-Dichloroethane 3/8/2014 7:31:00 AM0.0321 mg/Kg-dry 1NDBenzene 3/8/2014 7:31:00 AM0.0214 mg/Kg-dry 1NDToluene 3/8/2014 7:31:00 AM0.0214 mg/Kg-dry 1ND1,2-Dibromoethane (EDB) 3/8/2014 7:31:00 AM0.00535 mg/Kg-dry 1NDEthylbenzene 3/8/2014 7:31:00 AM0.0321 mg/Kg-dry 10.0744m,p-Xylene 3/8/2014 7:31:00 AM0.0214 mg/Kg-dry 1NDo-Xylene 3/8/2014 7:31:00 AM0.0214 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/8/2014 7:31:00 AM63.7-129 %REC 194.5



Page 5 of 16




Matrix: Soil


Lab ID: 1403066-002


Analytical Report

3/22/20141403066

Date Reported:WO#:


Surr: Toluene-d8 3/8/2014 7:31:00 AM61.4-128 %REC 1100 Surr: 1-Bromo-4-fluorobenzene 3/8/2014 7:31:00 AM63.1-141 %REC 1108

Total Metals by EPA Method 6020 Analyst: BRBatch ID: 6824

Lead 3/10/2014 6:19:55 PM0.167 mg/Kg-dry 13.62

Sample Moisture (Percent Moisture) Analyst: PHBatch ID: R12949

Percent Moisture 3/10/2014 2:04:00 PMwt% 118.1



Page 6 of 16

Project: 7-Eleven Store 23030 Orphan UST RemovCLIENT: Stantec Consulting CorporationWork Order: 1403066 QC SUMMARY REPORT

Total Metals by EPA Method 6020

3/22/2014Date:

Sample ID: MB-6824

Batch ID: 6824 Analysis Date: 3/10/2014

Prep Date: 3/10/2014

Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual

Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 12952

SeqNo: 259282

MBLKSampType:

Lead 0.200ND

Sample ID: LCS-6824




Units: mg/Kg

RL

Client ID: LCSS

RunNo: 12952

SeqNo: 259283

LCSSampType:

Lead 71.80 89.2 84.3 1160.200 064.0

Sample ID: 1403080-001ADUP




Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 12952

SeqNo: 259292

DUPSampType:

Lead 300.184 12.45 29.79.23

Sample ID: 1403080-001AMS




Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 12952

SeqNo: 259525

MSSampType:

Lead 22.28 96.4 75 1250.178 12.4533.9

Sample ID: 1403080-001AMSD




Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 12952

SeqNo: 259526

MSDSampType:

Lead 24.44 83.7 75 125 300.196 12.45 33.93 3.0932.9

Qualifiers: B Analyte detected in the associated Method Blank D Dilution was required E Value above quantitation range

H Holding times for preparation or analysis exceeded J Analyte detected below quantitation limits ND Not detected at the Reporting Limit

R RPD outside accepted recovery limits RL Reporting Limit S Spike recovery outside accepted recovery limits

Page 7 of 16


Diesel and Heavy Oil by NWTPH-Dx/Dx Ext.

3/22/2014Date:





Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 13122

SeqNo: 263403

DUPSampType:

Diesel (Fuel Oil) 3026.2 0NDHeavy Oil 3065.6 92.10 21.074.6 Surr: 2-Fluorobiphenyl 26.23 119 50 150 031.2 Surr: o-Terphenyl 26.23 115 50 150 030.2

Sample ID: LCS-6888




Units: mg/Kg

RL

Client ID: LCSS

RunNo: 13122

SeqNo: 263426

LCSSampType:

Diesel (Fuel Oil) 500.0 107 65 13520.0 0537 Surr: 2-Fluorobiphenyl 20.00 114 50 15022.9 Surr: o-Terphenyl 20.00 111 50 15022.3

Sample ID: MB-6888




Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 13122

SeqNo: 263427

MBLKSampType:

Diesel (Fuel Oil) 20.0NDHeavy Oil 50.0ND Surr: 2-Fluorobiphenyl 20.00 117 50 15023.4 Surr: o-Terphenyl 20.00 113 50 15022.7




Page 8 of 16


Polyaromatic Hydrocarbons by EPA Method 8270 (SIM)

3/22/2014Date:

Sample ID: MB-6839




Units: µg/Kg

RL

Client ID: MBLKS

RunNo: 13018

SeqNo: 260668

MBLKSampType:

Naphthalene 50.0ND2-Methylnaphthalene 50.0ND1-Methylnaphthalene 50.0ND Surr: 2-Fluorobiphenyl 500.0 94.8 50.4 142474 Surr: Terphenyl-d14 (surr) 500.0 99.3 48.8 157496

Sample ID: LCS-6839




Units: µg/Kg

RL

Client ID: LCSS

RunNo: 13018

SeqNo: 260669

LCSSampType:

Naphthalene 1,000 96.2 61.6 12550.0 09622-Methylnaphthalene 1,000 92.4 58.2 12950.0 09241-Methylnaphthalene 1,000 99.7 56.4 13250.0 0997 Surr: 2-Fluorobiphenyl 500.0 98.0 50.4 142490 Surr: Terphenyl-d14 (surr) 500.0 94.4 48.8 157472





Units: µg/Kg-dry

RL

Client ID: ORPH-1@8'

RunNo: 13018

SeqNo: 260671

DUPSampType:

Naphthalene 3059.2 0ND2-Methylnaphthalene 3059.2 0ND1-Methylnaphthalene 3059.2 108.0 39.4161 Surr: 2-Fluorobiphenyl 592.0 99.0 50.4 142 0586 Surr: Terphenyl-d14 (surr) 592.0 107 48.8 157 0636




Page 9 of 16



3/22/2014Date:





Units: µg/Kg-dry

RL


RunNo: 13018

SeqNo: 260672

MSSampType:

Naphthalene 1,119 76.1 42.9 13856.0 23.288752-Methylnaphthalene 1,119 115 42.8 15156.0 01,2901-Methylnaphthalene 1,119 84.5 41.6 14856.0 108.01,050 Surr: 2-Fluorobiphenyl 559.5 87.6 50.4 142490 Surr: Terphenyl-d14 (surr) 559.5 93.5 48.8 157523




Page 10 of 16


Gasoline by NWTPH-Gx

3/22/2014Date:

Sample ID: 1403066-001BDUP

Batch ID: R12945 Analysis Date: 3/8/2014

Prep Date: 3/7/2014


Units: mg/Kg-dry

RL


RunNo: 12945

SeqNo: 259143

DUPSampType:

Gasoline Range Organics C6-C12 30 E5.58 227.4 1.47231 Surr: Toluene-d8 2.788 102 65 135 02.85 Surr: 4-Bromofluorobenzene 2.788 129 65 135 03.58

Sample ID: LCS-R12945


Prep Date: 3/8/2014


Units: mg/Kg

RL

Client ID: LCSS

RunNo: 12945

SeqNo: 259147

LCSSampType:

Gasoline 25.00 109 65 1355.00 027.2 Surr: Toluene-d8 2.500 104 65 1352.61 Surr: 4-Bromofluorobenzene 2.500 127 65 1353.18

Sample ID: MB-R12945


Prep Date: 3/8/2014


Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 12945

SeqNo: 259148

MBLKSampType:

Gasoline 5.00ND Surr: Toluene-d8 2.500 105 65 1352.63 Surr: 4-Bromofluorobenzene 2.500 127 65 1353.16




Page 11 of 16


Volatile Organic Compounds by EPA Method 8260

3/22/2014Date:



Prep Date: 3/7/2014


Units: mg/Kg-dry

RL


RunNo: 12943

SeqNo: 259118

DUPSampType:

Methyl tert-butyl ether (MTBE) 300.0558 0ND1,2-Dichloroethane 300.0335 0NDBenzene 300.0223 0NDToluene 300.0223 0ND1,2-Dibromoethane (EDB) 300.00558 0NDEthylbenzene 300.0335 0NDm,p-Xylene 300.0223 0NDo-Xylene 300.0223 0ND Surr: 1-Bromo-4-fluorobenzene 2.788 103 63.1 141 02.87 Surr: Dibromofluoromethane 2.788 97.8 63.7 129 02.73 Surr: Toluene-d8 2.788 100 61.4 128 02.79

Sample ID: 1403066-002BMS


Prep Date: 3/7/2014


Units: mg/Kg-dry

RL


RunNo: 12943

SeqNo: 259120

MSSampType:

Methyl tert-butyl ether (MTBE) 1.070 98.2 54.4 1320.0535 01.051,2-Dichloroethane 1.070 97.7 51.3 1390.0321 01.05Benzene 1.070 99.0 63.5 1330.0214 01.06Toluene 1.070 103 63.4 1320.0214 01.111,2-Dibromoethane (EDB) 1.070 99.9 50.4 1360.00535 01.07Ethylbenzene 1.070 102 54.5 1340.0321 0.074381.17m,p-Xylene 2.140 105 53.1 1320.0214 02.25o-Xylene 1.070 105 53.3 1390.0214 01.12 Surr: 1-Bromo-4-fluorobenzene 2.675 107 63.1 1412.86 Surr: Dibromofluoromethane 2.675 93.7 63.7 1292.51 Surr: Toluene-d8 2.675 99.1 61.4 1282.65




Page 12 of 16



3/22/2014Date:

Sample ID: LCS-6814


Prep Date: 3/7/2014


Units: mg/Kg

RL

Client ID: LCSS

RunNo: 12943

SeqNo: 259125

LCSSampType:

Methyl tert-butyl ether (MTBE) 1.000 96.1 59.1 1380.0500 00.9611,2-Dichloroethane 1.000 98.8 61.9 1360.0300 00.988Benzene 1.000 97.9 74.6 1240.0200 00.979Toluene 1.000 96.9 80.9 1240.0200 00.9691,2-Dibromoethane (EDB) 1.000 96.1 70 1300.00500 00.961Ethylbenzene 1.000 95.3 74 1290.0300 00.953m,p-Xylene 2.000 95.4 79.8 1280.0200 01.91o-Xylene 1.000 97.8 72.7 1240.0200 00.978 Surr: 1-Bromo-4-fluorobenzene 2.500 100 63.1 1412.50 Surr: Dibromofluoromethane 2.500 97.1 63.7 1292.43 Surr: Toluene-d8 2.500 101 61.4 1282.52

Sample ID: MB-6814


Prep Date: 3/7/2014


Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 12943

SeqNo: 259126

MBLKSampType:

Methyl tert-butyl ether (MTBE) 0.0500ND1,2-Dichloroethane 0.0300NDBenzene 0.0200NDToluene 0.0200ND1,2-Dibromoethane (EDB) 0.00500NDEthylbenzene 0.0300NDm,p-Xylene 0.0200NDo-Xylene 0.0200ND Surr: 1-Bromo-4-fluorobenzene 2.500 102 63.1 1412.54 Surr: Dibromofluoromethane 2.500 98.4 63.7 1292.46 Surr: Toluene-d8 2.500 101 61.4 1282.52




Page 13 of 16

Date Received: 3/6/2014 5:28:00 PM

Client Name: STANTEC Work Order Number: 1403066

Sample Log-In Check List

Chelsea WardLogged by:

Item Information

How was the sample delivered? Client

Is Chain of Custody complete? Yes No Not Present

Was an attempt made to cool the samples? Yes No NA

Are samples properly preserved? Yes No

Was preservative added to bottles? Yes No NA

Did all samples containers arrive in good condition(unbroken)? Yes No

Does paperwork match bottle labels? Yes No

Are matrices correctly identified on Chain of Custody? Yes No

Is it clear what analyses were requested? Yes No

Is the headspace in the VOA vials? Yes No NA

1.2.

6.

10.11.

12.13.14.

15.16.17. Were all holding times able to be met? Yes No

Chain of Custody

Log In

7. Were all coolers received at a temperature of >0°C to 10.0°C Yes No NA

8. Sample(s) in proper container(s)? Yes No

9. Sufficient sample volume for indicated test(s)? Yes No

Special Handling (if applicable)

18.

19.

Was client notified of all discrepancies with this order? Yes No NA

Person Notified: Date:

Regarding:

Via: eMail Phone Fax In Person

Additional remarks:

Client Instructions:

By Whom:

Coolers are present? Yes No NA3.

Shipping container/cooler in good condition? Yes No4.Custody seals intact on shipping container/cooler? Yes No Not Required5.

Item # Temp ºC ConditionCooler 1 6.5 GoodCooler 2 7.4 GoodCooler 3 4.8 GoodSample 1 8.1 GoodSample 2 6.9 GoodSample 3 5.3 Good

Page 1 of 1 Page 14 of 16

March 22, 2014



RE: 7-Eleven Store 23020 UST ReplacementLab ID: 1403175



T: (206) 352-3790F: (206) 352-7178

[email protected]


Michael Dee





Sincerely,




Page 1 of 33



03/22/2014Date:

Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting Corporation

Lab Order: 1403175



1403175-001 SS-1@14' 03/07/2014 10:10 AM 03/14/2014 3:46 PM1403175-002 SS-2@15' 03/07/2014 10:40 AM 03/14/2014 3:46 PM1403175-003 SS-3@15' 03/07/2014 11:05 AM 03/14/2014 3:46 PM1403175-004 SS-4@13' 03/07/2014 11:30 AM 03/14/2014 3:46 PM1403175-005 SS-5@15' 03/07/2014 11:35 AM 03/14/2014 3:46 PM1403175-006 SP-1 03/07/2014 12:50 PM 03/14/2014 3:46 PM1403175-007 SP-2 03/07/2014 12:55 PM 03/14/2014 3:46 PM1403175-008 SP-3 03/07/2014 1:30 PM 03/14/2014 3:46 PM1403175-009 SP-4 03/07/2014 1:35 PM 03/14/2014 3:46 PM1403175-010 SP-5 03/07/2014 1:40 PM 03/14/2014 3:46 PM1403175-011 SP-6 03/07/2014 1:45 PM 03/14/2014 3:46 PM1403175-012 SP-7 03/07/2014 1:50 PM 03/14/2014 3:46 PM1403175-013 SP-8 03/10/2014 12:00 PM 03/14/2014 3:46 PM1403175-014 SS-6@14' 03/10/2014 11:30 AM 03/14/2014 3:46 PM


Page 2 of 33

Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting Corporation

3/22/2014


Date:WO#:





Page 3 of 33

Project: 7-Eleven Store 23020 UST Replacement

Client Sample ID: SS-1@14'

Collection Date: 3/7/2014 10:10:00 AM

Matrix: Soil


Lab ID: 1403175-001


Analytical Report

3/22/20141403175

Date Reported:WO#:


Diesel (Fuel Oil) 3/19/2014 12:43:00 AM21.2 mg/Kg-dry 1NDHeavy Oil 3/19/2014 12:43:00 AM53.0 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/19/2014 12:43:00 AM50-150 %REC 1140 Surr: o-Terphenyl 3/19/2014 12:43:00 AM50-150 %REC 1137


Naphthalene 3/19/2014 1:17:00 PM50.2 µg/Kg-dry 1ND2-Methylnaphthalene 3/19/2014 1:17:00 PM50.2 µg/Kg-dry 1ND1-Methylnaphthalene 3/19/2014 1:17:00 PM50.2 µg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/19/2014 1:17:00 PM50.4-142 %REC 177.1 Surr: Terphenyl-d14 (surr) 3/19/2014 1:17:00 PM48.8-157 %REC 193.7


Gasoline 3/19/2014 6:02:00 PM3.43 mg/Kg-dry 1ND Surr: 4-Bromofluorobenzene 3/19/2014 6:02:00 PM65-135 %REC 1109 Surr: Toluene-d8 3/19/2014 6:02:00 PM65-135 %REC 199.0


Methyl tert-butyl ether (MTBE) 3/19/2014 6:02:00 PM0.0343 mg/Kg-dry 1ND1,2-Dichloroethane 3/19/2014 6:02:00 PM0.0206 mg/Kg-dry 1NDBenzene 3/19/2014 6:02:00 PM0.0137 mg/Kg-dry 10.0549Toluene 3/19/2014 6:02:00 PM0.0137 mg/Kg-dry 10.2211,2-Dibromoethane (EDB) 3/19/2014 6:02:00 PM0.00343 mg/Kg-dry 1NDEthylbenzene 3/19/2014 6:02:00 PM0.0206 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 6:02:00 PM0.0137 mg/Kg-dry 10.0423o-Xylene 3/19/2014 6:02:00 PM0.0137 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 6:02:00 PM63.7-129 %REC 190.8 Surr: Toluene-d8 3/19/2014 6:02:00 PM61.4-128 %REC 1100 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 6:02:00 PM63.1-141 %REC 198.2



Page 4 of 33




Matrix: Soil


Lab ID: 1403175-001


Analytical Report

3/22/20141403175

Date Reported:WO#:

Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897

Lead 3/21/2014 1:23:57 AM0.178 mg/Kg-dry 127.6

Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070

Percent Moisture 3/17/2014 9:42:52 AMwt% 112.3



Page 5 of 33




Matrix: Soil


Lab ID: 1403175-002


Analytical Report

3/22/20141403175

Date Reported:WO#:








Methyl tert-butyl ether (MTBE) 3/19/2014 6:56:00 PM0.0473 mg/Kg-dry 1ND1,2-Dichloroethane 3/19/2014 6:56:00 PM0.0284 mg/Kg-dry 1NDBenzene 3/19/2014 6:56:00 PM0.0189 mg/Kg-dry 1NDToluene 3/19/2014 6:56:00 PM0.0189 mg/Kg-dry 1ND1,2-Dibromoethane (EDB) 3/19/2014 6:56:00 PM0.00473 mg/Kg-dry 1NDEthylbenzene 3/19/2014 6:56:00 PM0.0284 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 6:56:00 PM0.0189 mg/Kg-dry 1NDo-Xylene 3/19/2014 6:56:00 PM0.0189 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 6:56:00 PM63.7-129 %REC 193.0 Surr: Toluene-d8 3/19/2014 6:56:00 PM61.4-128 %REC 1102 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 6:56:00 PM63.1-141 %REC 1104



Page 6 of 33




Matrix: Soil


Lab ID: 1403175-002


Analytical Report

3/22/20141403175

Date Reported:WO#:


Lead 3/21/2014 2:47:10 AM0.161 mg/Kg-dry 12.42





Page 7 of 33




Matrix: Soil


Lab ID: 1403175-003


Analytical Report

3/22/20141403175

Date Reported:WO#:




Benzene 3/19/2014 7:52:00 PM0.0190 mg/Kg-dry 1NDToluene 3/19/2014 7:52:00 PM0.0190 mg/Kg-dry 1NDEthylbenzene 3/19/2014 7:52:00 PM0.0284 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 7:52:00 PM0.0190 mg/Kg-dry 1NDo-Xylene 3/19/2014 7:52:00 PM0.0190 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 7:52:00 PM63.7-129 %REC 193.2 Surr: Toluene-d8 3/19/2014 7:52:00 PM61.4-128 %REC 1101 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 7:52:00 PM63.1-141 %REC 1105


Lead 3/21/2014 2:58:15 AM0.167 mg/Kg-dry 12.02





Page 8 of 33




Matrix: Soil


Lab ID: 1403175-004


Analytical Report

3/22/20141403175

Date Reported:WO#:


Diesel Range Organics (C12-C24) 3/19/2014 2:08:00 AM21.5 mg/Kg-dry 1149Heavy Oil 3/19/2014 2:08:00 AM53.8 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/19/2014 2:08:00 AM50-150 %REC 1144 Surr: o-Terphenyl 3/19/2014 2:08:00 AM50-150 %REC 1139NOTES:DRO - Indicates the presence of unresolved compounds eluting from dodecane through tetracosane (C12-C24).




Gasoline D 3/21/2014 12:03:00 AM355 mg/Kg-dry 100851 Surr: 4-Bromofluorobenzene D 3/21/2014 12:03:00 AM65-135 %REC 100105 Surr: Toluene-d8 3/19/2014 8:19:00 PM65-135 %REC 1132


Methyl tert-butyl ether (MTBE) 3/19/2014 8:19:00 PM0.0355 mg/Kg-dry 1ND1,2-Dichloroethane 3/19/2014 8:19:00 PM0.0213 mg/Kg-dry 1NDBenzene 3/19/2014 8:19:00 PM0.0142 mg/Kg-dry 1NDToluene 3/19/2014 8:19:00 PM0.0142 mg/Kg-dry 10.04611,2-Dibromoethane (EDB) 3/19/2014 8:19:00 PM0.00355 mg/Kg-dry 1NDEthylbenzene 3/19/2014 8:19:00 PM0.0213 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 8:19:00 PM0.0142 mg/Kg-dry 1NDo-Xylene 3/19/2014 8:19:00 PM0.0142 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 8:19:00 PM63.7-129 %REC 190.5 Surr: Toluene-d8 3/19/2014 8:19:00 PM61.4-128 %REC 1110 Surr: 1-Bromo-4-fluorobenzene S 3/19/2014 8:19:00 PM63.1-141 %REC 1173



Page 9 of 33




Matrix: Soil


Lab ID: 1403175-004


Analytical Report

3/22/20141403175

Date Reported:WO#:


NOTES:S - High surrogate recovery attributed to TPH interference. The method is in control as indicated by the Method Blank (MB) & Laboratory Control Sample (LCS).


Lead 3/21/2014 3:09:21 AM0.177 mg/Kg-dry 15.37





Page 10 of 33




Matrix: Soil


Lab ID: 1403175-005


Analytical Report

3/22/20141403175

Date Reported:WO#:




Benzene 3/19/2014 9:15:00 PM0.0130 mg/Kg-dry 1NDToluene 3/19/2014 9:15:00 PM0.0130 mg/Kg-dry 1NDEthylbenzene 3/19/2014 9:15:00 PM0.0194 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 9:15:00 PM0.0130 mg/Kg-dry 1NDo-Xylene 3/19/2014 9:15:00 PM0.0130 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 9:15:00 PM63.7-129 %REC 192.8 Surr: Toluene-d8 3/19/2014 9:15:00 PM61.4-128 %REC 199.6 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 9:15:00 PM63.1-141 %REC 197.7


Lead 3/21/2014 3:59:15 AM0.176 mg/Kg-dry 11.87





Page 11 of 33


Client Sample ID: SP-1


Matrix: Soil


Lab ID: 1403175-006


Analytical Report

3/22/20141403175

Date Reported:WO#:


Gasoline 3/19/2014 9:43:00 PM2.90 mg/Kg-dry 110.8 Surr: 4-Bromofluorobenzene 3/19/2014 9:43:00 PM65-135 %REC 1112 Surr: Toluene-d8 3/19/2014 9:43:00 PM65-135 %REC 199.5


Benzene 3/19/2014 9:43:00 PM0.0116 mg/Kg-dry 1NDToluene 3/19/2014 9:43:00 PM0.0116 mg/Kg-dry 10.0198Ethylbenzene 3/19/2014 9:43:00 PM0.0174 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 9:43:00 PM0.0116 mg/Kg-dry 10.0384o-Xylene 3/19/2014 9:43:00 PM0.0116 mg/Kg-dry 10.0180 Surr: Dibromofluoromethane 3/19/2014 9:43:00 PM63.7-129 %REC 192.7 Surr: Toluene-d8 3/19/2014 9:43:00 PM61.4-128 %REC 1101 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 9:43:00 PM63.1-141 %REC 1104


Lead 3/21/2014 4:10:21 AM0.169 mg/Kg-dry 118.2





Page 12 of 33




Matrix: Soil


Lab ID: 1403175-007


Analytical Report

3/22/20141403175

Date Reported:WO#:




Benzene 3/19/2014 10:10:00 PM0.0177 mg/Kg-dry 1NDToluene 3/19/2014 10:10:00 PM0.0177 mg/Kg-dry 1NDEthylbenzene 3/19/2014 10:10:00 PM0.0266 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 10:10:00 PM0.0177 mg/Kg-dry 1NDo-Xylene 3/19/2014 10:10:00 PM0.0177 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 10:10:00 PM63.7-129 %REC 193.6 Surr: Toluene-d8 3/19/2014 10:10:00 PM61.4-128 %REC 1101 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 10:10:00 PM63.1-141 %REC 194.3


Lead 3/21/2014 4:21:27 AM0.143 mg/Kg-dry 122.4





Page 13 of 33




Matrix: Soil


Lab ID: 1403175-008


Analytical Report

3/22/20141403175

Date Reported:WO#:


Gasoline Range Organics C6-C12 3/19/2014 10:38:00 PM3.41 mg/Kg-dry 127.3 Surr: 4-Bromofluorobenzene 3/19/2014 10:38:00 PM65-135 %REC 1108 Surr: Toluene-d8 3/19/2014 10:38:00 PM65-135 %REC 1100NOTES:GRO - Indicates the presence of unresolved compounds eluting from toluene to dodecane (~C7->C12).


Benzene 3/19/2014 10:38:00 PM0.0136 mg/Kg-dry 1NDToluene 3/19/2014 10:38:00 PM0.0136 mg/Kg-dry 1NDEthylbenzene 3/19/2014 10:38:00 PM0.0205 mg/Kg-dry 10.387m,p-Xylene 3/19/2014 10:38:00 PM0.0136 mg/Kg-dry 12.53o-Xylene D 3/21/2014 12:06:00 PM0.136 mg/Kg-dry 102.96 Surr: Dibromofluoromethane 3/19/2014 10:38:00 PM63.7-129 %REC 189.6 Surr: Toluene-d8 3/19/2014 10:38:00 PM61.4-128 %REC 199.6 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 10:38:00 PM63.1-141 %REC 198.9


Lead 3/21/2014 4:32:32 AM0.141 mg/Kg-dry 123.6





Page 14 of 33




Matrix: Soil


Lab ID: 1403175-009


Analytical Report

3/22/20141403175

Date Reported:WO#:




Benzene 3/19/2014 11:06:00 PM0.0141 mg/Kg-dry 1NDToluene 3/19/2014 11:06:00 PM0.0141 mg/Kg-dry 1NDEthylbenzene 3/19/2014 11:06:00 PM0.0212 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 11:06:00 PM0.0141 mg/Kg-dry 10.0150o-Xylene 3/19/2014 11:06:00 PM0.0141 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 11:06:00 PM63.7-129 %REC 193.7 Surr: Toluene-d8 3/19/2014 11:06:00 PM61.4-128 %REC 1103 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 11:06:00 PM63.1-141 %REC 196.0


Lead 3/21/2014 4:43:38 AM0.155 mg/Kg-dry 123.5





Page 15 of 33




Matrix: Soil


Lab ID: 1403175-010


Analytical Report

3/22/20141403175

Date Reported:WO#:




Benzene 3/19/2014 11:34:00 PM0.0151 mg/Kg-dry 1NDToluene 3/19/2014 11:34:00 PM0.0151 mg/Kg-dry 1NDEthylbenzene 3/19/2014 11:34:00 PM0.0226 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 11:34:00 PM0.0151 mg/Kg-dry 1NDo-Xylene 3/19/2014 11:34:00 PM0.0151 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 11:34:00 PM63.7-129 %REC 192.7 Surr: Toluene-d8 3/19/2014 11:34:00 PM61.4-128 %REC 1102 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 11:34:00 PM63.1-141 %REC 197.7


Lead 3/21/2014 4:54:43 AM0.172 mg/Kg-dry 123.4





Page 16 of 33




Matrix: Soil


Lab ID: 1403175-011


Analytical Report

3/22/20141403175

Date Reported:WO#:


Gasoline 3/20/2014 12:02:00 AM3.20 mg/Kg-dry 1ND Surr: 4-Bromofluorobenzene 3/20/2014 12:02:00 AM65-135 %REC 1104 Surr: Toluene-d8 3/20/2014 12:02:00 AM65-135 %REC 197.5


Benzene 3/20/2014 12:02:00 AM0.0128 mg/Kg-dry 1NDToluene 3/20/2014 12:02:00 AM0.0128 mg/Kg-dry 1NDEthylbenzene 3/20/2014 12:02:00 AM0.0192 mg/Kg-dry 1NDm,p-Xylene 3/20/2014 12:02:00 AM0.0128 mg/Kg-dry 1NDo-Xylene 3/20/2014 12:02:00 AM0.0128 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/20/2014 12:02:00 AM63.7-129 %REC 191.9 Surr: Toluene-d8 3/20/2014 12:02:00 AM61.4-128 %REC 1101 Surr: 1-Bromo-4-fluorobenzene 3/20/2014 12:02:00 AM63.1-141 %REC 194.0


Lead 3/21/2014 5:05:49 AM0.141 mg/Kg-dry 120.0





Page 17 of 33




Matrix: Soil


Lab ID: 1403175-012


Analytical Report

3/22/20141403175

Date Reported:WO#:


Gasoline 3/20/2014 12:30:00 AM3.06 mg/Kg-dry 1ND Surr: 4-Bromofluorobenzene 3/20/2014 12:30:00 AM65-135 %REC 1108 Surr: Toluene-d8 3/20/2014 12:30:00 AM65-135 %REC 198.4


Benzene 3/20/2014 12:30:00 AM0.0122 mg/Kg-dry 1NDToluene 3/20/2014 12:30:00 AM0.0122 mg/Kg-dry 1NDEthylbenzene 3/20/2014 12:30:00 AM0.0183 mg/Kg-dry 1NDm,p-Xylene 3/20/2014 12:30:00 AM0.0122 mg/Kg-dry 1NDo-Xylene 3/20/2014 12:30:00 AM0.0122 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/20/2014 12:30:00 AM63.7-129 %REC 191.9 Surr: Toluene-d8 3/20/2014 12:30:00 AM61.4-128 %REC 1102 Surr: 1-Bromo-4-fluorobenzene 3/20/2014 12:30:00 AM63.1-141 %REC 197.6


Lead 3/21/2014 5:16:54 AM0.139 mg/Kg-dry 121.1





Page 18 of 33




Matrix: Soil


Lab ID: 1403175-013


Analytical Report

3/22/20141403175

Date Reported:WO#:


Diesel Range Organics (C12-C24) 3/19/2014 2:36:00 AM24.1 mg/Kg-dry 1160Heavy Oil 3/19/2014 2:36:00 AM60.1 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/19/2014 2:36:00 AM50-150 %REC 1143 Surr: o-Terphenyl 3/19/2014 2:36:00 AM50-150 %REC 1139NOTES:DRO - Indicates the presence of unresolved compounds eluting from dodecane through tetracosane (C12-C24).


Gasoline D 3/21/2014 12:30:00 AM280 mg/Kg-dry 100603 Surr: 4-Bromofluorobenzene D 3/21/2014 12:30:00 AM65-135 %REC 100101 Surr: Toluene-d8 D 3/21/2014 12:30:00 AM65-135 %REC 10098.3


Benzene 3/20/2014 12:57:00 AM0.0112 mg/Kg-dry 10.0167Toluene 3/20/2014 12:57:00 AM0.0112 mg/Kg-dry 1NDEthylbenzene D 3/21/2014 12:30:00 AM1.68 mg/Kg-dry 1004.74m,p-Xylene D 3/21/2014 12:30:00 AM1.12 mg/Kg-dry 1004.16o-Xylene 3/20/2014 12:57:00 AM0.0112 mg/Kg-dry 10.114 Surr: Dibromofluoromethane 3/20/2014 12:57:00 AM63.7-129 %REC 192.2 Surr: Toluene-d8 D 3/21/2014 12:30:00 AM61.4-128 %REC 10099.1 Surr: 1-Bromo-4-fluorobenzene 3/20/2014 12:57:00 AM63.1-141 %REC 1128


Lead 3/21/2014 5:28:00 AM0.177 mg/Kg-dry 13.54





Page 19 of 33




Matrix: Soil


Lab ID: 1403175-014


Analytical Report

3/22/20141403175

Date Reported:WO#:




Naphthalene 3/19/2014 3:51:00 PM51.2 µg/Kg-dry 159.72-Methylnaphthalene 3/19/2014 3:51:00 PM51.2 µg/Kg-dry 11131-Methylnaphthalene 3/19/2014 3:51:00 PM51.2 µg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/19/2014 3:51:00 PM50.4-142 %REC 172.0 Surr: Terphenyl-d14 (surr) 3/19/2014 3:51:00 PM48.8-157 %REC 1100


Gasoline D 3/21/2014 12:58:00 AM66.1 mg/Kg-dry 20294 Surr: 4-Bromofluorobenzene 3/20/2014 1:52:00 AM65-135 %REC 1124 Surr: Toluene-d8 3/20/2014 1:52:00 AM65-135 %REC 1107


Methyl tert-butyl ether (MTBE) 3/20/2014 1:52:00 AM0.0331 mg/Kg-dry 1ND1,2-Dichloroethane 3/20/2014 1:52:00 AM0.0198 mg/Kg-dry 1NDBenzene 3/20/2014 1:52:00 AM0.0132 mg/Kg-dry 1NDToluene 3/20/2014 1:52:00 AM0.0132 mg/Kg-dry 1ND1,2-Dibromoethane (EDB) 3/20/2014 1:52:00 AM0.00331 mg/Kg-dry 1NDEthylbenzene 3/20/2014 1:52:00 AM0.0198 mg/Kg-dry 10.106m,p-Xylene 3/20/2014 1:52:00 AM0.0132 mg/Kg-dry 10.0803o-Xylene 3/20/2014 1:52:00 AM0.0132 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/20/2014 1:52:00 AM63.7-129 %REC 190.0 Surr: Toluene-d8 3/20/2014 1:52:00 AM61.4-128 %REC 1105 Surr: 1-Bromo-4-fluorobenzene 3/20/2014 1:52:00 AM63.1-141 %REC 1114



Page 20 of 33




Matrix: Soil


Lab ID: 1403175-014


Analytical Report

3/22/20141403175

Date Reported:WO#:


Lead 3/21/2014 5:39:06 AM0.164 mg/Kg-dry 13.31





Page 21 of 33

Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT


3/22/2014Date:

Sample ID: MB-6897




Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 13171

SeqNo: 264922

MBLKSampType:

Lead 0.200ND

Sample ID: LCS-6897




Units: mg/Kg

RL

Client ID: LCSS

RunNo: 13171

SeqNo: 264925

LCSSampType:

Lead 71.80 92.7 84.3 1160.200 066.5





Units: mg/Kg-dry

RL

Client ID: SS-1@14'

RunNo: 13171

SeqNo: 264927

DUPSampType:

Lead 300.174 27.62 4.3026.5





Units: mg/Kg-dry

RL

Client ID: SS-1@14'

RunNo: 13171

SeqNo: 264929

MSSampType:

Lead 22.62 118 75 1250.181 27.6254.2





Units: mg/Kg-dry

RL

Client ID: SS-1@14'

RunNo: 13171

SeqNo: 264930

MSDSampType:

Lead 19.65 48.0 75 125 30 SR0.157 27.62 54.22 37.637.1




Page 22 of 33



3/22/2014Date:





Units: mg/Kg-dry

RL

Client ID: SS-1@14'

RunNo: 13171

SeqNo: 264930

MSDSampType:

NOTES:S - Outlying spike recovery observed.




Page 23 of 33



3/22/2014Date:





Units: mg/Kg-dry

RL

Client ID: SS-1@14'

RunNo: 13117

SeqNo: 263259

DUPSampType:

Diesel (Fuel Oil) 3021.8 0NDHeavy Oil 3054.5 0ND Surr: 2-Fluorobiphenyl 21.81 116 50 150 025.4 Surr: o-Terphenyl 21.81 113 50 150 024.8

Sample ID: LCS-6906




Units: mg/Kg

RL

Client ID: LCSS

RunNo: 13117

SeqNo: 263273

LCSSampType:

Diesel (Fuel Oil) 500.0 99.0 65 13520.0 0495 Surr: 2-Fluorobiphenyl 20.00 117 50 15023.4 Surr: o-Terphenyl 20.00 113 50 15022.6

Sample ID: MB-6906




Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 13117

SeqNo: 263274

MBLKSampType:





Page 24 of 33



3/22/2014Date:

Sample ID: MB-6905




Units: µg/Kg

RL

Client ID: MBLKS

RunNo: 13136

SeqNo: 263871

MBLKSampType:


Sample ID: LCS-6905




Units: µg/Kg

RL

Client ID: LCSS

RunNo: 13136

SeqNo: 263872

LCSSampType:






Units: µg/Kg-dry

RL

Client ID: SS-2@15'

RunNo: 13136

SeqNo: 263879

DUPSampType:

Naphthalene 3049.7 0ND2-Methylnaphthalene 3049.7 0ND1-Methylnaphthalene 3049.7 0ND Surr: 2-Fluorobiphenyl 497.1 77.8 50.4 142 0387 Surr: Terphenyl-d14 (surr) 497.1 94.4 48.8 157 0469




Page 25 of 33



3/22/2014Date:





Units: µg/Kg-dry

RL

Client ID: SS-2@15'

RunNo: 13136

SeqNo: 263880

MSSampType:

Naphthalene 947.3 66.6 42.9 13847.4 06312-Methylnaphthalene 947.3 78.0 42.8 15147.4 07391-Methylnaphthalene 947.3 72.7 41.6 14847.4 0689 Surr: 2-Fluorobiphenyl 473.6 72.6 50.4 142344 Surr: Terphenyl-d14 (surr) 473.6 87.5 48.8 157414




Page 26 of 33



3/22/2014Date:





Units: mg/Kg-dry

RL

Client ID: SS-1@14'

RunNo: 13158

SeqNo: 264446

DUPSampType:

Gasoline 303.43 0ND Surr: Toluene-d8 1.715 98.4 65 135 01.69 Surr: 4-Bromofluorobenzene 1.715 111 65 135 01.90





Units: mg/Kg

RL

Client ID: LCSS

RunNo: 13158

SeqNo: 264461

LCSSampType:

Gasoline 25.00 80.3 65 1355.00 020.1 Surr: Toluene-d8 2.500 96.4 65 1352.41 Surr: 4-Bromofluorobenzene 2.500 108 65 1352.71





Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 13158

SeqNo: 264462

MBLKSampType:

Gasoline 5.00ND Surr: Toluene-d8 2.500 97.6 65 1352.44 Surr: 4-Bromofluorobenzene 2.500 111 65 1352.78




Page 27 of 33



3/22/2014Date:





Units: mg/Kg-dry

RL

Client ID: SS-1@14'

RunNo: 13157

SeqNo: 264421

DUPSampType:

Methyl tert-butyl ether (MTBE) 300.0343 0ND1,2-Dichloroethane 300.0206 0NDBenzene 300.0137 0.05489 3.370.0531Toluene 300.0137 0.2210 0.8810.2231,2-Dibromoethane (EDB) 300.00343 0NDEthylbenzene 300.0206 0NDm,p-Xylene 300.0137 0.04227 3.800.0407o-Xylene 300.0137 0ND Surr: Dibromofluoromethane 1.715 91.3 63.7 129 01.57 Surr: Toluene-d8 1.715 101 61.4 128 01.74 Surr: 1-Bromo-4-fluorobenzene 1.715 101 63.1 141 01.73





Units: mg/Kg-dry

RL

Client ID: SS-2@15'

RunNo: 13157

SeqNo: 264423

MSSampType:

Methyl tert-butyl ether (MTBE) 0.9454 93.5 54.4 1320.0473 00.8841,2-Dichloroethane 0.9454 86.9 51.3 1390.0284 00.821Benzene 0.9454 106 63.5 1330.0189 01.00Toluene 0.9454 107 63.4 1320.0189 01.021,2-Dibromoethane (EDB) 0.9454 97.1 50.4 1360.00473 00.918Ethylbenzene 0.9454 111 54.5 1340.0284 01.05m,p-Xylene 1.891 107 53.1 1320.0189 02.03o-Xylene 0.9454 110 53.3 1390.0189 01.04 Surr: Dibromofluoromethane 2.363 89.1 63.7 1292.11 Surr: Toluene-d8 2.363 101 61.4 1282.38 Surr: 1-Bromo-4-fluorobenzene 2.363 96.7 63.1 1412.29




Page 28 of 33



3/22/2014Date:

Sample ID: LCS-6920




Units: mg/Kg

RL

Client ID: LCSS

RunNo: 13157

SeqNo: 264437

LCSSampType:

Methyl tert-butyl ether (MTBE) 1.000 99.2 59.1 1380.0500 00.9921,2-Dichloroethane 1.000 86.0 61.9 1360.0300 00.860Benzene 1.000 104 74.6 1240.0200 01.04Toluene 1.000 107 80.9 1240.0200 01.071,2-Dibromoethane (EDB) 1.000 95.8 70 1300.00500 00.958Ethylbenzene 1.000 104 74 1290.0300 01.04m,p-Xylene 2.000 102 79.8 1280.0200 02.04o-Xylene 1.000 101 72.7 1240.0200 01.01 Surr: Dibromofluoromethane 2.500 93.4 63.7 1292.34 Surr: Toluene-d8 2.500 103 61.4 1282.57 Surr: 1-Bromo-4-fluorobenzene 2.500 98.4 63.1 1412.46

Sample ID: MB-6920




Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 13157

SeqNo: 264438

MBLKSampType:

Methyl tert-butyl ether (MTBE) 0.0500ND1,2-Dichloroethane 0.0300NDBenzene 0.0200NDToluene 0.0200ND1,2-Dibromoethane (EDB) 0.00500NDEthylbenzene 0.0300NDm,p-Xylene 0.0200NDo-Xylene 0.0200ND Surr: Dibromofluoromethane 2.500 91.2 63.7 1292.28 Surr: Toluene-d8 2.500 99.5 61.4 1282.49 Surr: 1-Bromo-4-fluorobenzene 2.500 100 63.1 1412.51




Page 29 of 33



3/22/2014Date:

Sample ID: CCV-6920C




Units: µg/L

RL

Client ID: CCV

RunNo: 13157

SeqNo: 264986

CCVSampType:

o-Xylene 20.00 99.3 80 1200.0200 019.9 Surr: Dibromofluoromethane 50.00 97.4 63.7 12948.7 Surr: Toluene-d8 50.00 94.6 61.4 12847.3 Surr: 1-Bromo-4-fluorobenzene 50.00 98.8 63.1 14149.4




Page 30 of 33





Item Information











1.2.

6.

10.11.

12.13.14.


Chain of Custody

Log In





18.

19.



Regarding:


Additional remarks:


By Whom:



Item # Temp ºC ConditionCooler 1 7.2 GoodCooler 2 5.0 GoodSample 1 7.9 GoodSample 2 6.3 Good


March 22, 2014



RE: 7-Eleven 23030 UST ReplacementLab ID: 1403174



T: (206) 352-3790F: (206) 352-7178

[email protected]


Michael Dee





Sincerely,




Page 1 of 26



03/22/2014Date:

Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting Corporation

Lab Order: 1403174



1403174-001 SP-9 03/14/2014 8:45 AM 03/14/2014 3:46 PM1403174-002 SP-10 03/14/2014 9:00 AM 03/14/2014 3:46 PM1403174-003 SP-11 03/14/2014 9:10 AM 03/14/2014 3:46 PM1403174-004 SP-12 03/14/2014 9:15 AM 03/14/2014 3:46 PM1403174-005 [email protected]' 03/14/2014 9:20 AM 03/14/2014 3:46 PM1403174-006 [email protected]'FD 03/14/2014 9:25 AM 03/14/2014 3:46 PM1403174-007 PL-1@3' 03/14/2014 10:10 AM 03/14/2014 3:46 PM1403174-008 DPN-1@3' 03/14/2014 10:20 AM 03/14/2014 3:46 PM1403174-009 SS-7@10' 03/14/2014 10:35 AM 03/14/2014 3:46 PM


Page 2 of 26

Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting Corporation

3/22/2014


Date:WO#:





Page 3 of 26

Project: 7-Eleven 23030 UST Replacement



Matrix: Soil


Lab ID: 1403174-001


Analytical Report

3/22/20141403174

Date Reported:WO#:


Diesel (Fuel Oil) 3/18/2014 6:10:00 PM21.9 mg/Kg-dry 1NDHeavy Oil 3/18/2014 6:10:00 PM54.7 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/18/2014 6:10:00 PM50-150 %REC 1118 Surr: o-Terphenyl 3/18/2014 6:10:00 PM50-150 %REC 1114


Gasoline 3/19/2014 9:17:00 AM3.12 mg/Kg-dry 124.8 Surr: 4-Bromofluorobenzene 3/19/2014 9:17:00 AM65-135 %REC 1101 Surr: Toluene-d8 3/19/2014 9:17:00 AM65-135 %REC 196.8


Benzene 3/19/2014 9:17:00 AM0.0125 mg/Kg-dry 1NDToluene 3/19/2014 9:17:00 AM0.0125 mg/Kg-dry 1NDEthylbenzene 3/19/2014 9:17:00 AM0.0187 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 9:17:00 AM0.0125 mg/Kg-dry 1NDo-Xylene 3/19/2014 9:17:00 AM0.0125 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 9:17:00 AM63.7-129 %REC 192.8 Surr: Toluene-d8 3/19/2014 9:17:00 AM61.4-128 %REC 197.8 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 9:17:00 AM63.1-141 %REC 192.3


Lead 3/20/2014 9:10:32 AM0.176 mg/Kg-dry 111.3





Page 4 of 26




Matrix: Soil


Lab ID: 1403174-002


Analytical Report

3/22/20141403174

Date Reported:WO#:








Lead 3/20/2014 9:21:07 AM0.186 mg/Kg-dry 111.0





Page 5 of 26




Matrix: Soil


Lab ID: 1403174-003


Analytical Report

3/22/20141403174

Date Reported:WO#:








Lead 3/20/2014 9:31:42 AM0.175 mg/Kg-dry 112.3





Page 6 of 26




Matrix: Soil


Lab ID: 1403174-004


Analytical Report

3/22/20141403174

Date Reported:WO#:








Lead 3/20/2014 9:42:17 AM0.175 mg/Kg-dry 19.96





Page 7 of 26


Client Sample ID: [email protected]'


Matrix: Soil


Lab ID: 1403174-005


Analytical Report

3/22/20141403174

Date Reported:WO#:


Diesel (Fuel Oil) 3/18/2014 8:02:00 PM22.1 mg/Kg-dry 122.8Heavy Oil 3/18/2014 8:02:00 PM55.3 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/18/2014 8:02:00 PM50-150 %REC 1140 Surr: o-Terphenyl 3/18/2014 8:02:00 PM50-150 %REC 1136


Naphthalene 3/19/2014 11:34:00 AM50.0 µg/Kg-dry 18252-Methylnaphthalene 3/19/2014 11:34:00 AM50.0 µg/Kg-dry 14851-Methylnaphthalene 3/19/2014 11:34:00 AM50.0 µg/Kg-dry 1186 Surr: 2-Fluorobiphenyl 3/19/2014 11:34:00 AM50.4-142 %REC 183.6 Surr: Terphenyl-d14 (surr) 3/19/2014 11:34:00 AM48.8-157 %REC 1104


Gasoline D 3/20/2014 10:41:00 PM134 mg/Kg-dry 50635 Surr: 4-Bromofluorobenzene 3/19/2014 11:09:00 AM65-135 %REC 1114 Surr: Toluene-d8 D 3/20/2014 10:41:00 PM65-135 %REC 5097.4


Methyl tert-butyl ether (MTBE) 3/19/2014 11:09:00 AM0.0269 mg/Kg-dry 1ND1,2-Dichloroethane 3/19/2014 11:09:00 AM0.0161 mg/Kg-dry 1NDBenzene 3/19/2014 11:09:00 AM0.0108 mg/Kg-dry 1NDToluene 3/19/2014 11:09:00 AM0.0108 mg/Kg-dry 1ND1,2-Dibromoethane (EDB) 3/19/2014 11:09:00 AM0.00269 mg/Kg-dry 1NDEthylbenzene D 3/20/2014 10:41:00 PM0.807 mg/Kg-dry 501.31m,p-Xylene D 3/20/2014 10:41:00 PM0.538 mg/Kg-dry 501.46o-Xylene 3/19/2014 11:09:00 AM0.0108 mg/Kg-dry 10.0377 Surr: Dibromofluoromethane 3/19/2014 11:09:00 AM63.7-129 %REC 190.5 Surr: Toluene-d8 D 3/20/2014 10:41:00 PM61.4-128 %REC 5096.9 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 11:09:00 AM63.1-141 %REC 1103



Page 8 of 26


Client Sample ID: [email protected]'


Matrix: Soil


Lab ID: 1403174-005


Analytical Report

3/22/20141403174

Date Reported:WO#:


Lead 3/20/2014 9:52:51 AM0.182 mg/Kg-dry 118.1





Page 9 of 26


Client Sample ID: [email protected]'FD


Matrix: Soil


Lab ID: 1403174-006


Analytical Report

3/22/20141403174

Date Reported:WO#:


Diesel Range Organics (C12-C24) 3/18/2014 8:30:00 PM24.6 mg/Kg-dry 1105Heavy Oil 3/18/2014 8:30:00 PM61.4 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/18/2014 8:30:00 PM50-150 %REC 1126 Surr: o-Terphenyl 3/18/2014 8:30:00 PM50-150 %REC 1119NOTES:DRO - Indicates the presence of unresolved compounds eluting from dodecane through tetracosane (C12-C24).


Naphthalene D 3/19/2014 8:07:00 PM551 µg/Kg-dry 107,2402-Methylnaphthalene 3/19/2014 11:59:00 AM55.1 µg/Kg-dry 13,1701-Methylnaphthalene 3/19/2014 11:59:00 AM55.1 µg/Kg-dry 11,250 Surr: 2-Fluorobiphenyl 3/19/2014 11:59:00 AM50.4-142 %REC 192.6 Surr: Terphenyl-d14 (surr) 3/19/2014 11:59:00 AM48.8-157 %REC 1105


Gasoline D 3/20/2014 11:08:00 PM210 mg/Kg-dry 502,020 Surr: 4-Bromofluorobenzene 3/19/2014 12:04:00 PM65-135 %REC 1132 Surr: Toluene-d8 D 3/20/2014 11:08:00 PM65-135 %REC 50101


Methyl tert-butyl ether (MTBE) 3/19/2014 12:04:00 PM0.0420 mg/Kg-dry 1ND1,2-Dichloroethane 3/19/2014 12:04:00 PM0.0252 mg/Kg-dry 1NDBenzene 3/19/2014 12:04:00 PM0.0168 mg/Kg-dry 1NDToluene 3/19/2014 12:04:00 PM0.0168 mg/Kg-dry 1ND1,2-Dibromoethane (EDB) 3/19/2014 12:04:00 PM0.00420 mg/Kg-dry 1NDEthylbenzene D 3/20/2014 11:08:00 PM1.26 mg/Kg-dry 504.45m,p-Xylene D 3/20/2014 11:08:00 PM0.840 mg/Kg-dry 504.70o-Xylene 3/19/2014 12:04:00 PM0.0168 mg/Kg-dry 10.109 Surr: Dibromofluoromethane 3/19/2014 12:04:00 PM63.7-129 %REC 190.0 Surr: Toluene-d8 D 3/20/2014 11:08:00 PM61.4-128 %REC 5098.7 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 12:04:00 PM63.1-141 %REC 1120



Page 10 of 26


Client Sample ID: [email protected]'FD


Matrix: Soil


Lab ID: 1403174-006


Analytical Report

3/22/20141403174

Date Reported:WO#:


Lead 3/20/2014 10:03:26 AM0.216 mg/Kg-dry 112.6





Page 11 of 26


Client Sample ID: PL-1@3'


Matrix: Soil


Lab ID: 1403174-007


Analytical Report

3/22/20141403174

Date Reported:WO#:


Diesel Range Organics (C12-C24) 3/18/2014 8:58:00 PM21.8 mg/Kg-dry 1331Heavy Oil 3/18/2014 8:58:00 PM54.6 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/18/2014 8:58:00 PM50-150 %REC 1140 Surr: o-Terphenyl 3/18/2014 8:58:00 PM50-150 %REC 1136NOTES:DRO - Indicates the presence of unresolved compounds eluting from dodecane through tetracosane (C12-C24).


Naphthalene 3/19/2014 12:25:00 PM52.8 µg/Kg-dry 11,0602-Methylnaphthalene 3/19/2014 12:25:00 PM52.8 µg/Kg-dry 11,7701-Methylnaphthalene 3/19/2014 12:25:00 PM52.8 µg/Kg-dry 1737 Surr: 2-Fluorobiphenyl 3/19/2014 12:25:00 PM50.4-142 %REC 183.0 Surr: Terphenyl-d14 (surr) 3/19/2014 12:25:00 PM48.8-157 %REC 1102


Gasoline D 3/20/2014 11:36:00 PM130 mg/Kg-dry 50780 Surr: 4-Bromofluorobenzene 3/19/2014 1:00:00 PM65-135 %REC 1120 Surr: Toluene-d8 D 3/20/2014 11:36:00 PM65-135 %REC 5098.5


Methyl tert-butyl ether (MTBE) 3/19/2014 1:00:00 PM0.0260 mg/Kg-dry 1ND1,2-Dichloroethane 3/19/2014 1:00:00 PM0.0156 mg/Kg-dry 1NDBenzene 3/19/2014 1:00:00 PM0.0104 mg/Kg-dry 1NDToluene 3/19/2014 1:00:00 PM0.0104 mg/Kg-dry 1ND1,2-Dibromoethane (EDB) 3/19/2014 1:00:00 PM0.00260 mg/Kg-dry 1NDEthylbenzene 3/19/2014 1:00:00 PM0.0156 mg/Kg-dry 11.17m,p-Xylene 3/19/2014 1:00:00 PM0.0104 mg/Kg-dry 11.71o-Xylene 3/19/2014 1:00:00 PM0.0104 mg/Kg-dry 10.0239 Surr: Dibromofluoromethane 3/19/2014 1:00:00 PM63.7-129 %REC 191.0 Surr: Toluene-d8 S 3/19/2014 1:00:00 PM61.4-128 %REC 1166 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 1:00:00 PM63.1-141 %REC 1109



Page 12 of 26


Client Sample ID: PL-1@3'


Matrix: Soil


Lab ID: 1403174-007


Analytical Report

3/22/20141403174

Date Reported:WO#:


NOTES:S - High surrogate recovery attributed to TPH interference. The method is in control as indicated by the Method Blank (MB) & Laboratory Control Sample (LCS).


Lead 3/20/2014 10:14:01 AM0.182 mg/Kg-dry 13.12





Page 13 of 26


Client Sample ID: DPN-1@3'


Matrix: Soil


Lab ID: 1403174-008


Analytical Report

3/22/20141403174

Date Reported:WO#:




Benzene 3/19/2014 1:57:00 PM0.0115 mg/Kg-dry 1NDToluene 3/19/2014 1:57:00 PM0.0115 mg/Kg-dry 1NDEthylbenzene 3/19/2014 1:57:00 PM0.0173 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 1:57:00 PM0.0115 mg/Kg-dry 1NDo-Xylene 3/19/2014 1:57:00 PM0.0115 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 1:57:00 PM63.7-129 %REC 191.6 Surr: Toluene-d8 3/19/2014 1:57:00 PM61.4-128 %REC 199.4 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 1:57:00 PM63.1-141 %REC 1105


Lead 3/20/2014 10:24:36 AM0.186 mg/Kg-dry 115.1





Page 14 of 26




Matrix: Soil


Lab ID: 1403174-009


Analytical Report

3/22/20141403174

Date Reported:WO#:




Benzene 3/19/2014 2:51:00 PM0.0116 mg/Kg-dry 1NDToluene 3/19/2014 2:51:00 PM0.0116 mg/Kg-dry 1NDEthylbenzene 3/19/2014 2:51:00 PM0.0174 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 2:51:00 PM0.0116 mg/Kg-dry 1NDo-Xylene 3/19/2014 2:51:00 PM0.0116 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 2:51:00 PM63.7-129 %REC 190.8 Surr: Toluene-d8 3/19/2014 2:51:00 PM61.4-128 %REC 1101 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 2:51:00 PM63.1-141 %REC 1101


Lead 3/20/2014 10:35:10 AM0.203 mg/Kg-dry 16.19





Page 15 of 26

Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT


3/22/2014Date:

Sample ID: MB-6896




Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 13138

SeqNo: 264007

MBLKSampType:

Lead 0.200ND

Sample ID: LCS-6896




Units: mg/Kg

RL

Client ID: LCSS

RunNo: 13138

SeqNo: 264008

LCSSampType:

Lead 71.80 85.7 84.3 1160.200 061.6





Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 13138

SeqNo: 264011

DUPSampType:

Lead 300.158 2.793 11.72.49





Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 13138

SeqNo: 264013

MSSampType:

Lead 20.32 86.2 75 1250.163 2.79320.3





Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 13138

SeqNo: 264088

MSDSampType:

Lead 20.48 94.3 75 125 300.164 2.793 20.31 8.4622.1




Page 16 of 26



3/22/2014Date:





Units: mg/Kg-dry

RL

Client ID: PL-1@3'

RunNo: 13122

SeqNo: 263417

DUPSampType:

Diesel Range Organics (C12-C24) 3022.3 331.3 5.17315Heavy Oil 3055.8 0ND Surr: 2-Fluorobiphenyl 22.33 145 50 150 032.3 Surr: o-Terphenyl 22.33 144 50 150 032.1

NOTES:DRO - Indicates the presence of unresolved compounds eluting from dodecane through tetracosane (C12-C24).

Sample ID: LCS-6888




Units: mg/Kg

RL

Client ID: LCSS

RunNo: 13122

SeqNo: 263426

LCSSampType:

Diesel (Fuel Oil) 500.0 107 65 13520.0 0537 Surr: 2-Fluorobiphenyl 20.00 114 50 15022.9 Surr: o-Terphenyl 20.00 111 50 15022.3

Sample ID: MB-6888




Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 13122

SeqNo: 263427

MBLKSampType:





Page 17 of 26



3/22/2014Date:

Sample ID: MB-6905




Units: µg/Kg

RL

Client ID: MBLKS

RunNo: 13136

SeqNo: 263871

MBLKSampType:


Sample ID: LCS-6905




Units: µg/Kg

RL

Client ID: LCSS

RunNo: 13136

SeqNo: 263872

LCSSampType:






Units: µg/Kg-dry

RL

Client ID: BATCH

RunNo: 13136

SeqNo: 263879

DUPSampType:

Naphthalene 3049.7 0ND2-Methylnaphthalene 3049.7 0ND1-Methylnaphthalene 3049.7 0ND Surr: 2-Fluorobiphenyl 497.1 77.8 50.4 142 0387 Surr: Terphenyl-d14 (surr) 497.1 94.4 48.8 157 0469




Page 18 of 26



3/22/2014Date:





Units: µg/Kg-dry

RL

Client ID: BATCH

RunNo: 13136

SeqNo: 263880

MSSampType:

Naphthalene 947.3 66.6 42.9 13847.4 06312-Methylnaphthalene 947.3 78.0 42.8 15147.4 07391-Methylnaphthalene 947.3 72.7 41.6 14847.4 0689 Surr: 2-Fluorobiphenyl 473.6 72.6 50.4 142344 Surr: Terphenyl-d14 (surr) 473.6 87.5 48.8 157414




Page 19 of 26



3/22/2014Date:





Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 13114

SeqNo: 263218

DUPSampType:

Gasoline 305.34 0ND Surr: Toluene-d8 2.670 95.8 65 135 02.56 Surr: 4-Bromofluorobenzene 2.670 111 65 135 02.95





Units: mg/Kg

RL

Client ID: LCSS

RunNo: 13114

SeqNo: 263225

LCSSampType:

Gasoline 25.00 80.7 65 1355.00 020.2 Surr: Toluene-d8 2.500 96.7 65 1352.42 Surr: 4-Bromofluorobenzene 2.500 112 65 1352.80





Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 13114

SeqNo: 263226

MBLKSampType:

Gasoline 5.00ND Surr: Toluene-d8 2.500 96.4 65 1352.41 Surr: 4-Bromofluorobenzene 2.500 104 65 1352.60

Sample ID: CCV-R13114D




Units: mg/Kg

RL

Client ID: CCV

RunNo: 13114

SeqNo: 264969

CCVSampType:

Gasoline 500.0 81.0 80 1205.00 0405 Surr: Toluene-d8 50.00 95.9 65 13547.9 Surr: 4-Bromofluorobenzene 50.00 105 65 13552.5




Page 20 of 26



3/22/2014Date:

Sample ID: CCV-R13114D




Units: mg/Kg

RL

Client ID: CCV

RunNo: 13114

SeqNo: 264969

CCVSampType:




Page 21 of 26



3/22/2014Date:





Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 13113

SeqNo: 263199

DUPSampType:

Methyl tert-butyl ether (MTBE) 300.0534 0ND1,2-Dichloroethane 300.0320 0NDBenzene 300.0214 0NDToluene 300.0214 0ND1,2-Dibromoethane (EDB) 300.00534 0NDEthylbenzene 300.0320 0NDm,p-Xylene 300.0214 0NDo-Xylene 300.0214 0ND Surr: Dibromofluoromethane 2.670 95.3 63.7 129 02.55 Surr: Toluene-d8 2.670 98.6 61.4 128 02.63 Surr: 1-Bromo-4-fluorobenzene 2.670 102 63.1 141 02.71





Units: mg/Kg-dry

RL

Client ID: BATCH

RunNo: 13113

SeqNo: 263201

MSSampType:

Methyl tert-butyl ether (MTBE) 0.9648 107 54.4 1320.0482 01.031,2-Dichloroethane 0.9648 102 51.3 1390.0289 00.988Benzene 0.9648 117 63.5 1330.0193 01.13Toluene 0.9648 119 63.4 1320.0193 01.151,2-Dibromoethane (EDB) 0.9648 108 50.4 1360.00482 01.05Ethylbenzene 0.9648 118 54.5 1340.0289 01.14m,p-Xylene 1.930 116 53.1 1320.0193 02.23o-Xylene 0.9648 119 53.3 1390.0193 01.15 Surr: Dibromofluoromethane 2.412 93.4 63.7 1292.25 Surr: Toluene-d8 2.412 98.5 61.4 1282.38 Surr: 1-Bromo-4-fluorobenzene 2.412 98.3 63.1 1412.37




Page 22 of 26



3/22/2014Date:

Sample ID: LCS-6912




Units: mg/Kg

RL

Client ID: LCSS

RunNo: 13113

SeqNo: 263209

LCSSampType:

Methyl tert-butyl ether (MTBE) 1.000 97.4 59.1 1380.0500 00.9741,2-Dichloroethane 1.000 96.4 61.9 1360.0300 00.964Benzene 1.000 95.1 74.6 1240.0200 00.951Toluene 1.000 97.6 80.9 1240.0200 00.9761,2-Dibromoethane (EDB) 1.000 99.1 70 1300.00500 00.991Ethylbenzene 1.000 97.7 74 1290.0300 00.977m,p-Xylene 2.000 98.5 79.8 1280.0200 01.97o-Xylene 1.000 98.6 72.7 1240.0200 00.986 Surr: Dibromofluoromethane 2.500 98.4 63.7 1292.46 Surr: Toluene-d8 2.500 97.9 61.4 1282.45 Surr: 1-Bromo-4-fluorobenzene 2.500 99.0 63.1 1412.47

Sample ID: MB-6912




Units: mg/Kg

RL

Client ID: MBLKS

RunNo: 13113

SeqNo: 263210

MBLKSampType:

Methyl tert-butyl ether (MTBE) 0.0500ND1,2-Dichloroethane 0.0300NDBenzene 0.0200NDToluene 0.0200ND1,2-Dibromoethane (EDB) 0.00500NDEthylbenzene 0.0300NDm,p-Xylene 0.0200NDo-Xylene 0.0200ND Surr: Dibromofluoromethane 2.500 101 63.7 1292.52 Surr: Toluene-d8 2.500 98.7 61.4 1282.47 Surr: 1-Bromo-4-fluorobenzene 2.500 94.2 63.1 1412.35




Page 23 of 26



3/22/2014Date:

Sample ID: CCV-6912B




Units: µg/L

RL

Client ID: CCV

RunNo: 13113

SeqNo: 264965

CCVSampType:

Ethylbenzene 20.00 97.7 80 1200.0300 019.5m,p-Xylene 40.00 98.5 80 1200.0200 039.4 Surr: Dibromofluoromethane 50.00 96.8 63.7 12948.4 Surr: Toluene-d8 50.00 97.2 61.4 12848.6 Surr: 1-Bromo-4-fluorobenzene 50.00 96.7 63.1 14148.4




Page 24 of 26





Item Information











1.2.

6.

10.11.

12.13.14.


Chain of Custody

Log In





18.

19.



Regarding:


Additional remarks:


By Whom:



Item # Temp ºC ConditionCooler 1 7.2 GoodCooler 2 5.0 GoodSample 1 7.9 GoodSample 2 6.3 Good



APPENDIX DDEPARTMENT OF ECOLOGY NOTICES AND CHECKLISTS



May 30, 2014


APPENDIX EWASTE DOCUMENTATION



May 30, 2014

Certificate of Weight Issued under authority of City of Seattle Ord. 7.04.580

SEATTLE IRON&METALS (ORP. 601 South Myrtle Street Seattle, WA 98108 206-682-0040

Date 03 07 14 10:21 AM Weighed for: Ticket #

Commodity

Gross lbs.

Tare lbs.

Net lbs. 10010 In !

I, the undersigned, certify that the weig s i dicated hereon are true and correct.

Weighed by Licensed City i

ORIGINAL KS300 (4/10)


SEATTLE IRON&METALS (ORP. 601 South Myrtle Street Seattle, WA 98108 206-682-0040

Date 03 07 14 9:47 AM Weighed for: Ticket #

Commodity

1'70- Gross lbs.

Tare lbs.

Net lbs.

I, the undersigned, certify that the wei ts indicated hereon are true and correct.

Weighed by

ORIGINAL KS300 (4/10)


SEATTLE IROI\I&METAlS (ORP. 601 South Myrtle Street Seattle, WA 98108 206-682-0040

Date 03 ()7 "' i, i~~ 23 Pt1 .L'-[·

Weighed for: Ticket # 7S)2C}J~7

Commodity Price

5 70 -- Gross lbs. 4·5780 ib

Tare lbs. 36650 It Net lbs. 91JO ~l-

lU

I, the undersigned, certify that the e ghts indicated hereon are true and correct.

Weighed by License

KS300 (4/10)

underground storage tank system replacement report

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