underground storage tank system replacement report
TRANSCRIPT
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
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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;
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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
1522 East Madison StreetSeattle, Washington
All Concentrations Reported in Milligrams per Kilogram (mg/kg)
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
MTCA Method A Cleanup Levels forUnrestricted Land Use
= 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
1522 East Madison StreetSeattle, Washington
All Concentrations Reported in Milligrams per Kilogram (mg/kg)
Total
Naphthalenes 1
SampleID
EDBMTBE EDCDate
SampledDepth
(feet bgs)USCS
PID(ppm)
Table 1B
MTCA Method A Cleanup Levels forUnrestricted Land Use
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
7-Eleven Store No. 23020
GroundwaterElevation
(feet MSL)1
Seattle, Washington
Depth toGroundwater
(feet btoc)
Groundwater Concentrations(µg/L)
1522 East Madison Street
TotalLead
(µg/L)
Sample ID& Zone
Depth toProduct
(feet btoc)
ProductThickness
(feet)
All Concentrations Reported in Micrograms per Liter ( µg/L)
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)
TABLE 2
Groundwater Monitoring and Analytical Results
Date7
7-Eleven Store No. 23020
GroundwaterElevation
(feet MSL)1
Seattle, Washington
Depth toGroundwater
(feet btoc)
Groundwater Concentrations(µg/L)
1522 East Madison Street
TotalLead
(µg/L)
Sample ID& Zone
Depth toProduct
(feet btoc)
ProductThickness
(feet)
All Concentrations Reported in Micrograms per Liter ( µg/L)
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
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)
TABLE 2
Groundwater Monitoring and Analytical Results
Date7
7-Eleven Store No. 23020
GroundwaterElevation
(feet MSL)1
Seattle, Washington
Depth toGroundwater
(feet btoc)
Groundwater Concentrations(µg/L)
1522 East Madison Street
TotalLead
(µg/L)
Sample ID& Zone
Depth toProduct
(feet btoc)
ProductThickness
(feet)
All Concentrations Reported in Micrograms per Liter ( µg/L)
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
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)
TABLE 2
Groundwater Monitoring and Analytical Results
Date7
7-Eleven Store No. 23020
GroundwaterElevation
(feet MSL)1
Seattle, Washington
Depth toGroundwater
(feet btoc)
Groundwater Concentrations(µg/L)
1522 East Madison Street
TotalLead
(µg/L)
Sample ID& Zone
Depth toProduct
(feet btoc)
ProductThickness
(feet)
All Concentrations Reported in Micrograms per Liter ( µg/L)
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 = 0.22 feetLNAPL = 0.46 feet
LNAPL = 0.61 feet
LNAPL = 0.05 feetLNAPL = 0.06 feet
LNAPL = 0.02 feet
MTCA Method A CUL
MW-12(upper)
MW-10(upper)
MW-11(upper)
LNAPL = 0.90 feet
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)
TABLE 2
Groundwater Monitoring and Analytical Results
Date7
7-Eleven Store No. 23020
GroundwaterElevation
(feet MSL)1
Seattle, Washington
Depth toGroundwater
(feet btoc)
Groundwater Concentrations(µg/L)
1522 East Madison Street
TotalLead
(µg/L)
Sample ID& Zone
Depth toProduct
(feet btoc)
ProductThickness
(feet)
All Concentrations Reported in Micrograms per Liter ( µg/L)
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
23020 UST Replacement Report Tables.xlsx Stantec Consulting Services Inc.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
FIGURES
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
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.
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
APPENDIX BGROUNDWATER MONITORING FIELD NOTES
UNDERGROUND STORAGE SYSTEM REPLACEMENT REPORT7-Eleven Store No. 23020
Stantec Project No. 185750203
May 30, 2014
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
APPENDIX CLABORATORY REPORTS AND CHAIN-OF-CUSTODY DOCUMENTATION
UNDERGROUND STORAGE SYSTEM REPLACEMENT REPORT7-Eleven Store No. 23020
Stantec Project No. 185750189
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
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
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
Project: 7-Eleven Store 23030 Orphan UST Removal
Client Sample ID: ORPH-2@10'
Collection Date: 3/4/2014 1:45:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403066-002
Analyses Result Qual Units Date AnalyzedDFRL
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.
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Analyst: PHBatch ID: 6839
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 by NWTPH-Gx Analyst: GHBatch ID: R12945
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).
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6814
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
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 5 of 16
Project: 7-Eleven Store 23030 Orphan UST Removal
Client Sample ID: ORPH-2@10'
Collection Date: 3/4/2014 1:45:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403066-002
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403066
Date Reported:WO#:
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6814
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
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 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
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: LCSS
RunNo: 12952
SeqNo: 259283
LCSSampType:
Lead 71.80 89.2 84.3 1160.200 064.0
Sample ID: 1403080-001ADUP
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-dry
RL
Client ID: BATCH
RunNo: 12952
SeqNo: 259292
DUPSampType:
Lead 300.184 12.45 29.79.23
Sample ID: 1403080-001AMS
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-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
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-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
Project: 7-Eleven Store 23030 Orphan UST RemovCLIENT: Stantec Consulting CorporationWork Order: 1403066 QC SUMMARY REPORT
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext.
3/22/2014Date:
Sample ID: 1403146-001ADUP
Batch ID: 6888 Analysis Date: 3/18/2014
Prep Date: 3/17/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6888 Analysis Date: 3/18/2014
Prep Date: 3/17/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6888 Analysis Date: 3/18/2014
Prep Date: 3/17/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 8 of 16
Project: 7-Eleven Store 23030 Orphan UST RemovCLIENT: Stantec Consulting CorporationWork Order: 1403066 QC SUMMARY REPORT
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM)
3/22/2014Date:
Sample ID: MB-6839
Batch ID: 6839 Analysis Date: 3/12/2014
Prep Date: 3/12/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6839 Analysis Date: 3/12/2014
Prep Date: 3/12/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Sample ID: 1403066-001ADUP
Batch ID: 6839 Analysis Date: 3/12/2014
Prep Date: 3/12/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 9 of 16
Project: 7-Eleven Store 23030 Orphan UST RemovCLIENT: Stantec Consulting CorporationWork Order: 1403066 QC SUMMARY REPORT
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM)
3/22/2014Date:
Sample ID: 1403066-001AMS
Batch ID: 6839 Analysis Date: 3/12/2014
Prep Date: 3/12/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: µg/Kg-dry
RL
Client ID: ORPH-1@8'
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
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 10 of 16
Project: 7-Eleven Store 23030 Orphan UST RemovCLIENT: Stantec Consulting CorporationWork Order: 1403066 QC SUMMARY REPORT
Gasoline by NWTPH-Gx
3/22/2014Date:
Sample ID: 1403066-001BDUP
Batch ID: R12945 Analysis Date: 3/8/2014
Prep Date: 3/7/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg-dry
RL
Client ID: ORPH-1@8'
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
Batch ID: R12945 Analysis Date: 3/8/2014
Prep Date: 3/8/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: R12945 Analysis Date: 3/8/2014
Prep Date: 3/8/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 11 of 16
Project: 7-Eleven Store 23030 Orphan UST RemovCLIENT: Stantec Consulting CorporationWork Order: 1403066 QC SUMMARY REPORT
Volatile Organic Compounds by EPA Method 8260
3/22/2014Date:
Sample ID: 1403066-001BDUP
Batch ID: 6814 Analysis Date: 3/8/2014
Prep Date: 3/7/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg-dry
RL
Client ID: ORPH-1@8'
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
Batch ID: 6814 Analysis Date: 3/8/2014
Prep Date: 3/7/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg-dry
RL
Client ID: ORPH-2@10'
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
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 12 of 16
Project: 7-Eleven Store 23030 Orphan UST RemovCLIENT: Stantec Consulting CorporationWork Order: 1403066 QC SUMMARY REPORT
Volatile Organic Compounds by EPA Method 8260
3/22/2014Date:
Sample ID: LCS-6814
Batch ID: 6814 Analysis Date: 3/8/2014
Prep Date: 3/7/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6814 Analysis Date: 3/8/2014
Prep Date: 3/7/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 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
Page 15 of 16
Page 16 of 16
March 22, 2014
Stantec Consulting CorporationPaul Fairbairn
Attention Paul Fairbairn:
RE: 7-Eleven Store 23020 UST ReplacementLab ID: 1403175
11130 NE 33rd Pl, Suite 200Bellevue, WA 98004
3600 Fremont Ave. N.Seattle, WA 98103
T: (206) 352-3790F: (206) 352-7178
Fremont Analytical, Inc. received 14 sample(s) on 3/14/2014 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 33
03/22/2014Date:
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting Corporation
Lab Order: 1403175
Work Order Sample Summary
Lab Sample ID Client Sample ID Date/Time ReceivedDate/Time Collected
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
Note: If no "Time Collected" is supplied, a default of 12:00AM is assigned
Page 2 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting Corporation
3/22/2014
Case Narrative1403175
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 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
Client: Stantec Consulting Corporation
Lab ID: 1403175-001
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6906
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
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Analyst: PHBatch ID: 6905
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 by NWTPH-Gx Analyst: GHBatch ID: R13158
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
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 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
Client: Stantec Consulting Corporation
Lab ID: 1403175-001
Analyses Result Qual Units Date AnalyzedDFRL
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
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 5 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SS-2@15'
Collection Date: 3/7/2014 10:40:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-002
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6906
Diesel (Fuel Oil) 3/19/2014 1:40:00 AM19.8 mg/Kg-dry 1NDHeavy Oil 3/19/2014 1:40:00 AM49.4 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/19/2014 1:40:00 AM50-150 %REC 1116 Surr: o-Terphenyl 3/19/2014 1:40:00 AM50-150 %REC 1113
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Analyst: PHBatch ID: 6905
Naphthalene 3/19/2014 1:42:00 PM44.7 µg/Kg-dry 1ND2-Methylnaphthalene 3/19/2014 1:42:00 PM44.7 µg/Kg-dry 1ND1-Methylnaphthalene 3/19/2014 1:42:00 PM44.7 µg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/19/2014 1:42:00 PM50.4-142 %REC 170.6 Surr: Terphenyl-d14 (surr) 3/19/2014 1:42:00 PM48.8-157 %REC 195.4
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
Gasoline 3/19/2014 6:56:00 PM4.73 mg/Kg-dry 1ND Surr: 4-Bromofluorobenzene 3/19/2014 6:56:00 PM65-135 %REC 1114 Surr: Toluene-d8 3/19/2014 6:56:00 PM65-135 %REC 198.7
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
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 6 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SS-2@15'
Collection Date: 3/7/2014 10:40:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-002
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 2:47:10 AM0.161 mg/Kg-dry 12.42
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 16.70
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 7 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SS-3@15'
Collection Date: 3/7/2014 11:05:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-003
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
Gasoline 3/19/2014 7:52:00 PM4.74 mg/Kg-dry 1ND Surr: 4-Bromofluorobenzene 3/19/2014 7:52:00 PM65-135 %REC 1114 Surr: Toluene-d8 3/19/2014 7:52:00 PM65-135 %REC 198.1
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 2:58:15 AM0.167 mg/Kg-dry 12.02
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 18.14
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 8 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SS-4@13'
Collection Date: 3/7/2014 11:30:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-004
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6906
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).
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Analyst: PHBatch ID: 6905
Naphthalene 3/19/2014 3:25:00 PM49.1 µg/Kg-dry 1ND2-Methylnaphthalene 3/19/2014 3:25:00 PM49.1 µg/Kg-dry 1ND1-Methylnaphthalene 3/19/2014 3:25:00 PM49.1 µg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/19/2014 3:25:00 PM50.4-142 %REC 184.8 Surr: Terphenyl-d14 (surr) 3/19/2014 3:25:00 PM48.8-157 %REC 198.8
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
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 9 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SS-4@13'
Collection Date: 3/7/2014 11:30:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-004
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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).
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 3:09:21 AM0.177 mg/Kg-dry 15.37
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 113.2
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 10 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SS-5@15'
Collection Date: 3/7/2014 11:35:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-005
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
Gasoline 3/20/2014 10:14:00 PM3.24 mg/Kg-dry 1ND Surr: 4-Bromofluorobenzene 3/20/2014 10:14:00 PM65-135 %REC 1105 Surr: Toluene-d8 3/20/2014 10:14:00 PM65-135 %REC 197.2
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 3:59:15 AM0.176 mg/Kg-dry 11.87
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 113.9
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 11 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SP-1
Collection Date: 3/7/2014 12:50:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-006
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 4:10:21 AM0.169 mg/Kg-dry 118.2
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 19.83
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 12 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SP-2
Collection Date: 3/7/2014 12:55:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-007
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
Gasoline 3/19/2014 10:10:00 PM4.43 mg/Kg-dry 1ND Surr: 4-Bromofluorobenzene 3/19/2014 10:10:00 PM65-135 %REC 1104 Surr: Toluene-d8 3/19/2014 10:10:00 PM65-135 %REC 197.6
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 4:21:27 AM0.143 mg/Kg-dry 122.4
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 19.33
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 13 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SP-3
Collection Date: 3/7/2014 1:30:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-008
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
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).
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 4:32:32 AM0.141 mg/Kg-dry 123.6
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 19.96
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 14 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SP-4
Collection Date: 3/7/2014 1:35:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-009
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
Gasoline 3/19/2014 11:06:00 PM3.53 mg/Kg-dry 1ND Surr: 4-Bromofluorobenzene 3/19/2014 11:06:00 PM65-135 %REC 1106 Surr: Toluene-d8 3/19/2014 11:06:00 PM65-135 %REC 198.0
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 4:43:38 AM0.155 mg/Kg-dry 123.5
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 19.62
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 15 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SP-5
Collection Date: 3/7/2014 1:40:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-010
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
Gasoline 3/19/2014 11:34:00 PM3.77 mg/Kg-dry 15.66 Surr: 4-Bromofluorobenzene 3/19/2014 11:34:00 PM65-135 %REC 1108 Surr: Toluene-d8 3/19/2014 11:34:00 PM65-135 %REC 198.9
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 4:54:43 AM0.172 mg/Kg-dry 123.4
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 18.61
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 16 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SP-6
Collection Date: 3/7/2014 1:45:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-011
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 5:05:49 AM0.141 mg/Kg-dry 120.0
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 17.66
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 17 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SP-7
Collection Date: 3/7/2014 1:50:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-012
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13158
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 5:16:54 AM0.139 mg/Kg-dry 121.1
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 112.0
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 18 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SP-8
Collection Date: 3/10/2014 12:00:00 PM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-013
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6906
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 by NWTPH-Gx Analyst: GHBatch ID: R13158
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 5:28:00 AM0.177 mg/Kg-dry 13.54
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 119.1
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 19 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SS-6@14'
Collection Date: 3/10/2014 11:30:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-014
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6906
Diesel (Fuel Oil) 3/19/2014 3:04:00 AM22.5 mg/Kg-dry 1NDHeavy Oil 3/19/2014 3:04:00 AM56.3 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/19/2014 3:04:00 AM50-150 %REC 1138 Surr: o-Terphenyl 3/19/2014 3:04:00 AM50-150 %REC 1133
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Analyst: PHBatch ID: 6905
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 by NWTPH-Gx Analyst: GHBatch ID: R13158
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6920
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
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 20 of 33
Project: 7-Eleven Store 23020 UST Replacement
Client Sample ID: SS-6@14'
Collection Date: 3/10/2014 11:30:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403175-014
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403175
Date Reported:WO#:
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6897
Lead 3/21/2014 5:39:06 AM0.164 mg/Kg-dry 13.31
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 114.3
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 21 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT
Total Metals by EPA Method 6020
3/22/2014Date:
Sample ID: MB-6897
Batch ID: 6897 Analysis Date: 3/21/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg
RL
Client ID: MBLKS
RunNo: 13171
SeqNo: 264922
MBLKSampType:
Lead 0.200ND
Sample ID: LCS-6897
Batch ID: 6897 Analysis Date: 3/21/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg
RL
Client ID: LCSS
RunNo: 13171
SeqNo: 264925
LCSSampType:
Lead 71.80 92.7 84.3 1160.200 066.5
Sample ID: 1403175-001ADUP
Batch ID: 6897 Analysis Date: 3/21/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg-dry
RL
Client ID: SS-1@14'
RunNo: 13171
SeqNo: 264927
DUPSampType:
Lead 300.174 27.62 4.3026.5
Sample ID: 1403175-001AMS
Batch ID: 6897 Analysis Date: 3/21/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Sample ID: 1403175-001AMSD
Batch ID: 6897 Analysis Date: 3/21/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 22 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT
Total Metals by EPA Method 6020
3/22/2014Date:
Sample ID: 1403175-001AMSD
Batch ID: 6897 Analysis Date: 3/21/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg-dry
RL
Client ID: SS-1@14'
RunNo: 13171
SeqNo: 264930
MSDSampType:
NOTES:S - Outlying spike recovery observed.
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 23 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext.
3/22/2014Date:
Sample ID: 1403175-001ADUP
Batch ID: 6906 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6906 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6906 Analysis Date: 3/18/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg
RL
Client ID: MBLKS
RunNo: 13117
SeqNo: 263274
MBLKSampType:
Diesel (Fuel Oil) 20.0NDHeavy Oil 50.0ND Surr: 2-Fluorobiphenyl 20.00 133 50 15026.6 Surr: o-Terphenyl 20.00 131 50 15026.2
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 24 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM)
3/22/2014Date:
Sample ID: MB-6905
Batch ID: 6905 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: µg/Kg
RL
Client ID: MBLKS
RunNo: 13136
SeqNo: 263871
MBLKSampType:
Naphthalene 50.0ND2-Methylnaphthalene 50.0ND1-Methylnaphthalene 50.0ND Surr: 2-Fluorobiphenyl 500.0 81.5 50.4 142407 Surr: Terphenyl-d14 (surr) 500.0 92.9 48.8 157465
Sample ID: LCS-6905
Batch ID: 6905 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: µg/Kg
RL
Client ID: LCSS
RunNo: 13136
SeqNo: 263872
LCSSampType:
Naphthalene 1,000 82.7 61.6 12550.0 08272-Methylnaphthalene 1,000 85.9 58.2 12950.0 08591-Methylnaphthalene 1,000 79.3 56.4 13250.0 0793 Surr: 2-Fluorobiphenyl 500.0 78.4 50.4 142392 Surr: Terphenyl-d14 (surr) 500.0 87.2 48.8 157436
Sample ID: 1403175-002ADUP
Batch ID: 6905 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 25 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM)
3/22/2014Date:
Sample ID: 1403175-002AMS
Batch ID: 6905 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 26 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT
Gasoline by NWTPH-Gx
3/22/2014Date:
Sample ID: 1403175-001BDUP
Batch ID: R13158 Analysis Date: 3/19/2014
Prep Date: 3/19/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Sample ID: LCS-R13158
Batch ID: R13158 Analysis Date: 3/19/2014
Prep Date: 3/19/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Sample ID: MB-R13158
Batch ID: R13158 Analysis Date: 3/19/2014
Prep Date: 3/19/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 27 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT
Volatile Organic Compounds by EPA Method 8260
3/22/2014Date:
Sample ID: 1403175-001BDUP
Batch ID: 6920 Analysis Date: 3/19/2014
Prep Date: 3/19/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Sample ID: 1403175-002BMS
Batch ID: 6920 Analysis Date: 3/19/2014
Prep Date: 3/19/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 28 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT
Volatile Organic Compounds by EPA Method 8260
3/22/2014Date:
Sample ID: LCS-6920
Batch ID: 6920 Analysis Date: 3/19/2014
Prep Date: 3/19/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6920 Analysis Date: 3/19/2014
Prep Date: 3/19/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 29 of 33
Project: 7-Eleven Store 23020 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403175 QC SUMMARY REPORT
Volatile Organic Compounds by EPA Method 8260
3/22/2014Date:
Sample ID: CCV-6920C
Batch ID: 6920 Analysis Date: 3/21/2014
Prep Date: 3/21/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 30 of 33
Date Received: 3/14/2014 3:46:00 PM
Client Name: STANTEC Work Order Number: 1403175
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 7.2 GoodCooler 2 5.0 GoodSample 1 7.9 GoodSample 2 6.3 Good
Page 1 of 1 Page 31 of 33
Page 32 of 33
Page 33 of 33
March 22, 2014
Stantec Consulting CorporationPaul Fairbairn
Attention Paul Fairbairn:
RE: 7-Eleven 23030 UST ReplacementLab ID: 1403174
11130 NE 33rd Pl, Suite 200Bellevue, WA 98004
3600 Fremont Ave. N.Seattle, WA 98103
T: (206) 352-3790F: (206) 352-7178
Fremont Analytical, Inc. received 9 sample(s) on 3/14/2014 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 26
03/22/2014Date:
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting Corporation
Lab Order: 1403174
Work Order Sample Summary
Lab Sample ID Client Sample ID Date/Time ReceivedDate/Time Collected
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
Note: If no "Time Collected" is supplied, a default of 12:00AM is assigned
Page 2 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting Corporation
3/22/2014
Case Narrative1403174
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 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: SP-9
Collection Date: 3/14/2014 8:45:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-001
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6888
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 by NWTPH-Gx Analyst: GHBatch ID: R13114
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6896
Lead 3/20/2014 9:10:32 AM0.176 mg/Kg-dry 111.3
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 111.9
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 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: SP-10
Collection Date: 3/14/2014 9:00:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-002
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6888
Diesel (Fuel Oil) 3/18/2014 6:38:00 PM22.2 mg/Kg-dry 1NDHeavy Oil 3/18/2014 6:38:00 PM55.6 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/18/2014 6:38:00 PM50-150 %REC 1120 Surr: o-Terphenyl 3/18/2014 6:38:00 PM50-150 %REC 1115
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13114
Gasoline 3/19/2014 9:45:00 AM2.84 mg/Kg-dry 129.4 Surr: 4-Bromofluorobenzene 3/19/2014 9:45:00 AM65-135 %REC 1108 Surr: Toluene-d8 3/19/2014 9:45:00 AM65-135 %REC 197.3
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
Benzene 3/19/2014 9:45:00 AM0.0114 mg/Kg-dry 1NDToluene 3/19/2014 9:45:00 AM0.0114 mg/Kg-dry 1NDEthylbenzene 3/19/2014 9:45:00 AM0.0170 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 9:45:00 AM0.0114 mg/Kg-dry 1NDo-Xylene 3/19/2014 9:45:00 AM0.0114 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 9:45:00 AM63.7-129 %REC 191.9 Surr: Toluene-d8 3/19/2014 9:45:00 AM61.4-128 %REC 198.5 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 9:45:00 AM63.1-141 %REC 198.8
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6896
Lead 3/20/2014 9:21:07 AM0.186 mg/Kg-dry 111.0
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 110.6
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 5 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: SP-11
Collection Date: 3/14/2014 9:10:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-003
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6888
Diesel (Fuel Oil) 3/18/2014 7:06:00 PM22.4 mg/Kg-dry 1NDHeavy Oil 3/18/2014 7:06:00 PM56.0 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/18/2014 7:06:00 PM50-150 %REC 1144 Surr: o-Terphenyl 3/18/2014 7:06:00 PM50-150 %REC 1141
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13114
Gasoline 3/19/2014 10:13:00 AM2.14 mg/Kg-dry 125.8 Surr: 4-Bromofluorobenzene 3/19/2014 10:13:00 AM65-135 %REC 1106 Surr: Toluene-d8 3/19/2014 10:13:00 AM65-135 %REC 196.9
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
Benzene 3/19/2014 10:13:00 AM0.00856 mg/Kg-dry 1NDToluene 3/19/2014 10:13:00 AM0.00856 mg/Kg-dry 1NDEthylbenzene 3/19/2014 10:13:00 AM0.0128 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 10:13:00 AM0.00856 mg/Kg-dry 1NDo-Xylene 3/19/2014 10:13:00 AM0.00856 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 10:13:00 AM63.7-129 %REC 194.5 Surr: Toluene-d8 3/19/2014 10:13:00 AM61.4-128 %REC 198.7 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 10:13:00 AM63.1-141 %REC 196.0
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6896
Lead 3/20/2014 9:31:42 AM0.175 mg/Kg-dry 112.3
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 112.6
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 6 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: SP-12
Collection Date: 3/14/2014 9:15:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-004
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6888
Diesel (Fuel Oil) 3/18/2014 7:34:00 PM21.7 mg/Kg-dry 1NDHeavy Oil 3/18/2014 7:34:00 PM54.1 mg/Kg-dry 1ND Surr: 2-Fluorobiphenyl 3/18/2014 7:34:00 PM50-150 %REC 1141 Surr: o-Terphenyl 3/18/2014 7:34:00 PM50-150 %REC 1138
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13114
Gasoline 3/19/2014 10:41:00 AM3.19 mg/Kg-dry 131.5 Surr: 4-Bromofluorobenzene 3/19/2014 10:41:00 AM65-135 %REC 1108 Surr: Toluene-d8 3/19/2014 10:41:00 AM65-135 %REC 196.7
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
Benzene 3/19/2014 10:41:00 AM0.0128 mg/Kg-dry 1NDToluene 3/19/2014 10:41:00 AM0.0128 mg/Kg-dry 1NDEthylbenzene 3/19/2014 10:41:00 AM0.0191 mg/Kg-dry 1NDm,p-Xylene 3/19/2014 10:41:00 AM0.0128 mg/Kg-dry 1NDo-Xylene 3/19/2014 10:41:00 AM0.0128 mg/Kg-dry 1ND Surr: Dibromofluoromethane 3/19/2014 10:41:00 AM63.7-129 %REC 189.6 Surr: Toluene-d8 3/19/2014 10:41:00 AM61.4-128 %REC 196.7 Surr: 1-Bromo-4-fluorobenzene 3/19/2014 10:41:00 AM63.1-141 %REC 197.5
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6896
Lead 3/20/2014 9:42:17 AM0.175 mg/Kg-dry 19.96
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 111.6
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 7 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: [email protected]'
Collection Date: 3/14/2014 9:20:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-005
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6888
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
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Analyst: PHBatch ID: 6905
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 by NWTPH-Gx Analyst: GHBatch ID: R13114
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
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
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 8 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: [email protected]'
Collection Date: 3/14/2014 9:20:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-005
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6896
Lead 3/20/2014 9:52:51 AM0.182 mg/Kg-dry 118.1
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 112.8
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 9 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: [email protected]'FD
Collection Date: 3/14/2014 9:25:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-006
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6888
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).
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Analyst: PHBatch ID: 6905
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 by NWTPH-Gx Analyst: GHBatch ID: R13114
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
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
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 10 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: [email protected]'FD
Collection Date: 3/14/2014 9:25:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-006
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6896
Lead 3/20/2014 10:03:26 AM0.216 mg/Kg-dry 112.6
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 121.0
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 11 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: PL-1@3'
Collection Date: 3/14/2014 10:10:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-007
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext. Analyst: EMBatch ID: 6888
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).
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM) Analyst: PHBatch ID: 6905
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 by NWTPH-Gx Analyst: GHBatch ID: R13114
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
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
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
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 12 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: PL-1@3'
Collection Date: 3/14/2014 10:10:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-007
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
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).
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6896
Lead 3/20/2014 10:14:01 AM0.182 mg/Kg-dry 13.12
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 114.1
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 13 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: DPN-1@3'
Collection Date: 3/14/2014 10:20:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-008
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13114
Gasoline 3/19/2014 1:57:00 PM2.88 mg/Kg-dry 1ND Surr: 4-Bromofluorobenzene 3/19/2014 1:57:00 PM65-135 %REC 1115 Surr: Toluene-d8 3/19/2014 1:57:00 PM65-135 %REC 197.9
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6896
Lead 3/20/2014 10:24:36 AM0.186 mg/Kg-dry 115.1
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 111.0
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 14 of 26
Project: 7-Eleven 23030 UST Replacement
Client Sample ID: SS-7@10'
Collection Date: 3/14/2014 10:35:00 AM
Matrix: Soil
Client: Stantec Consulting Corporation
Lab ID: 1403174-009
Analyses Result Qual Units Date AnalyzedDFRL
Analytical Report
3/22/20141403174
Date Reported:WO#:
Gasoline by NWTPH-Gx Analyst: GHBatch ID: R13114
Gasoline 3/19/2014 2:51:00 PM2.89 mg/Kg-dry 14.75 Surr: 4-Bromofluorobenzene 3/19/2014 2:51:00 PM65-135 %REC 1111 Surr: Toluene-d8 3/19/2014 2:51:00 PM65-135 %REC 199.8
Volatile Organic Compounds by EPA Method 8260 Analyst: GHBatch ID: 6912
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
Total Metals by EPA Method 6020 Analyst: MCBatch ID: 6896
Lead 3/20/2014 10:35:10 AM0.203 mg/Kg-dry 16.19
Sample Moisture (Percent Moisture) Analyst: KZBatch ID: R13070
Percent Moisture 3/17/2014 9:42:52 AMwt% 115.3
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 15 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT
Total Metals by EPA Method 6020
3/22/2014Date:
Sample ID: MB-6896
Batch ID: 6896 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg
RL
Client ID: MBLKS
RunNo: 13138
SeqNo: 264007
MBLKSampType:
Lead 0.200ND
Sample ID: LCS-6896
Batch ID: 6896 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg
RL
Client ID: LCSS
RunNo: 13138
SeqNo: 264008
LCSSampType:
Lead 71.80 85.7 84.3 1160.200 061.6
Sample ID: 1403165-001ADUP
Batch ID: 6896 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg-dry
RL
Client ID: BATCH
RunNo: 13138
SeqNo: 264011
DUPSampType:
Lead 300.158 2.793 11.72.49
Sample ID: 1403165-001AMS
Batch ID: 6896 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg-dry
RL
Client ID: BATCH
RunNo: 13138
SeqNo: 264013
MSSampType:
Lead 20.32 86.2 75 1250.163 2.79320.3
Sample ID: 1403165-001AMSD
Batch ID: 6896 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 16 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT
Diesel and Heavy Oil by NWTPH-Dx/Dx Ext.
3/22/2014Date:
Sample ID: 1403174-007ADUP
Batch ID: 6888 Analysis Date: 3/18/2014
Prep Date: 3/17/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6888 Analysis Date: 3/18/2014
Prep Date: 3/17/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6888 Analysis Date: 3/18/2014
Prep Date: 3/17/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 17 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM)
3/22/2014Date:
Sample ID: MB-6905
Batch ID: 6905 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: µg/Kg
RL
Client ID: MBLKS
RunNo: 13136
SeqNo: 263871
MBLKSampType:
Naphthalene 50.0ND2-Methylnaphthalene 50.0ND1-Methylnaphthalene 50.0ND Surr: 2-Fluorobiphenyl 500.0 81.5 50.4 142407 Surr: Terphenyl-d14 (surr) 500.0 92.9 48.8 157465
Sample ID: LCS-6905
Batch ID: 6905 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: µg/Kg
RL
Client ID: LCSS
RunNo: 13136
SeqNo: 263872
LCSSampType:
Naphthalene 1,000 82.7 61.6 12550.0 08272-Methylnaphthalene 1,000 85.9 58.2 12950.0 08591-Methylnaphthalene 1,000 79.3 56.4 13250.0 0793 Surr: 2-Fluorobiphenyl 500.0 78.4 50.4 142392 Surr: Terphenyl-d14 (surr) 500.0 87.2 48.8 157436
Sample ID: 1403175-002ADUP
Batch ID: 6905 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 18 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT
Polyaromatic Hydrocarbons by EPA Method 8270 (SIM)
3/22/2014Date:
Sample ID: 1403175-002AMS
Batch ID: 6905 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 19 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT
Gasoline by NWTPH-Gx
3/22/2014Date:
Sample ID: 1403189-001BDUP
Batch ID: R13114 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Sample ID: LCS-R13114
Batch ID: R13114 Analysis Date: 3/19/2014
Prep Date: 3/19/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Sample ID: MB-R13114
Batch ID: R13114 Analysis Date: 3/18/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: R13114 Analysis Date: 3/20/2014
Prep Date: 3/20/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 20 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT
Gasoline by NWTPH-Gx
3/22/2014Date:
Sample ID: CCV-R13114D
Batch ID: R13114 Analysis Date: 3/20/2014
Prep Date: 3/20/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
Units: mg/Kg
RL
Client ID: CCV
RunNo: 13114
SeqNo: 264969
CCVSampType:
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 21 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT
Volatile Organic Compounds by EPA Method 8260
3/22/2014Date:
Sample ID: 1403189-001BDUP
Batch ID: 6912 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Sample ID: 1403189-002BMS
Batch ID: 6912 Analysis Date: 3/19/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 22 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT
Volatile Organic Compounds by EPA Method 8260
3/22/2014Date:
Sample ID: LCS-6912
Batch ID: 6912 Analysis Date: 3/18/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
Batch ID: 6912 Analysis Date: 3/18/2014
Prep Date: 3/18/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 23 of 26
Project: 7-Eleven 23030 UST ReplacementCLIENT: Stantec Consulting CorporationWork Order: 1403174 QC SUMMARY REPORT
Volatile Organic Compounds by EPA Method 8260
3/22/2014Date:
Sample ID: CCV-6912B
Batch ID: 6912 Analysis Date: 3/20/2014
Prep Date: 3/20/2014
Analyte Result SPK value SPK Ref Val %REC RPD Ref Val %RPDLowLimit HighLimit RPDLimit Qual
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
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 24 of 26
Date Received: 3/14/2014 3:46:00 PM
Client Name: STANTEC Work Order Number: 1403174
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 7.2 GoodCooler 2 5.0 GoodSample 1 7.9 GoodSample 2 6.3 Good
Page 1 of 1 Page 25 of 26
Page 26 of 26
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
APPENDIX DDEPARTMENT OF ECOLOGY NOTICES AND CHECKLISTS
UNDERGROUND STORAGE SYSTEM REPLACEMENT REPORT7-Eleven Store No. 23020
Stantec Project No. 185750189
May 30, 2014
UNDERGROUND STORAGE TANK SYSTEM REPLACEMENT REPORT
APPENDIX EWASTE DOCUMENTATION
UNDERGROUND STORAGE SYSTEM REPLACEMENT REPORT7-Eleven Store No. 23020
Stantec Project No. 185750189
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)
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 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)
Certificate of Weight Issued under authority of City of Seattle Ord. 7.04.580
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)