WS-7700_37041_CA_MRP_20230327

2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
Telephone [phone]
www.atcgroupservices.com

March 27, 2023

Ms. Linda Blalock
North Carolina Department of Environmental Quality
Division of Waste Management – Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699

Subject: Groundwater Monitoring Report
Jeff’s Grocery
2996 NC Highway 268
Pinnacle, Stokes County, North Carolina
NCDEQ Incident No. 37041
ATC Project No.: SLC3704103

Dear Ms. Blalock:

ATC Associates of North Carolina, P.C. (ATC) is submitting the enclosed Groundwater Monitoring Report for
the Jeff’s Grocery site. The report presents investigative procedures, field activities, and laboratory analytical
results for a groundwater sampling event conducted in February 2023.

If you have any questions or require additional information, please contact our office at [phone].

Sincerely,
ATC Associates of North Carolina, P.C.

Nicholas Kramer Ashley M.W. Offer, P.G.
Staff Scientist Senior Project Manager
Direct Line: 919-820-7051 Direct Line: 919-573-1206
Email: [e-mail] Email: [e-mail]

Attachments:
1. Groundwater Monitoring Report

Prepared for:

North Carolina Department of Environmental Quality
Division of Waste Management – Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699

GROUNDWATER MONITORING REPORT
JEFF’S GROCERY
2996 NC HIGHWAY 268
PINNACLE, STOKES COUNTY, NORTH CAROLINA

ATC Project No. SLC3704103

Prepared by:

ATC Associates of North Carolina, P.C.
2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina 27604
Telephone [phone]

Nicholas Kramer
Staff Scientist
Direct Line: 919-820-7051
Email: [e-mail]

Ashley M.W. Offer, P.G.
Senior Project Manager
Direct Line: 919-573-1206
Email: [e-mail]

March 27, 2023

Jeff’s Grocery
March 27, 2023
Page i

ATC Project No. SLC3704103 NCDEQ State Lead Program
Table of Contents
1.0 SITE IDENTIFICATION .......................................................................................................................... 1
2.0 EXECUTIVE SUMMARY ........................................................................................................................ 2
3.0 SITE DESCRIPTION .............................................................................................................................. 2
3.1 SITE CHARACTERIZATION .................................................................................................................................... 2
3.2 SITE BACKGROUND ............................................................................................................................................ 2
4.0 GROUNDWATER ASSESSMENT ACTIVITIES .................................................................................. 4
4.1 GROUNDWATER LEVELS...................................................................................................................................... 4
4.2 GROUNDWATER QUALITY ................................................................................................................................... 4
4.3 WATER SUPPLY WELLS ....................................................................................................................................... 5
5.0 CONCLUSIONS AND RECOMMENDATIONS .................................................................................... 5

TABLES:
Table 1 – Water Supply Well Information
Table 2 – Water Supply Well Analytical Results
Table 3 – Monitoring Well Construction and Groundwater Elevation Data
Table 4 – Groundwater Analytical Results
Table 5 – Field Parameters

FIGURES:
Figure 1 – Site Topographic Map
Figure 2 – Site Plan
Figure 3 – Potential Receptor Map
Figure 4 – Groundwater Elevation Contour Map
Figure 5 – Dissolved MTBE Isoconcentration Map

APPENDICES:
Appendix A – Site Photographs
Appendix B – Field Notes
Appendix C – Laboratory Analytical Report
Jeff’s Grocery
March 27, 2023
Page 2 of 5

ATC Project No. SLC3704103 NCDEQ State Lead Program
2.0 EXECUTIVE SUMMARY

ATC Associates of North Carolina, P.C. (ATC) has completed a Groundwater Monitoring Report for the
Jeff’s Grocery site. This report documents groundwater sampling activities conducted at the site in
February 2023. The activities were performed based on a December 21, 2022, Task Authorization (TA-03)
by the Trust Fund Branch of the Underground Storage Tank (UST) Section, Division of Waste Management,
North Carolina Department of Environmental Quality (NCDEQ). The work is being performed as part of
State Lead Contract #N122019A between NCDEQ and ATC.

The former Jeff’s Grocery site is located at 2996 NC Highway 268 in Pinnacle, Stokes County, North
Carolina. The site is developed with one single-story brick building and is currently occupied by Cornerstone
Market, a convenience store. Three monitoring wells are located at the site. Eight potable water supply
wells are located within 1,000 feet of the site, one of which is located on the site property. Municipal water
is not available to the site or vicinity.

On February 14, 2023, ATC personnel mobilized to the site collect groundwater samples from monitoring
wells MW-1, MW-2, and MW-3 and on-site water supply well WSW-1. Laboratory results indicate methyl
tert-butyl ether (MTBE) above the North Carolina Groundwater Quality Standard (2L Standard), but below
the Gross Contaminant Level (GCL) in MW-1. No other contaminants of concern were detected above 2L
Standards. The sample collected from water supply well WSW-1 yielded a concentration of
trichloroethylene (TCE) which exceeded the laboratory method detection limit but did not exceed the
laboratory reported detection limit or 2L Standard. Based on the sampling results collected to date, the
plume is limited to the area around the former dispenser island and MW-1.

The site is not a candidate for closure due to the presence of potable water supply wells within 1,000 feet
of the site, most notably WSW-1 located on the source property. ATC recommends groundwater and water
supply well sampling on an annual basis. If funding is available, ATC recommends delineating the horizontal
and vertical extent of the groundwater plume.

3.0 SITE DESCRIPTION

3.1 SITE CHARACTERIZATION

The Jeff’s Grocery site formerly operated as a convenience store and petroleum retail facility. Currently,
the site is occupied by Cornerstone Market, a convenience store. The former UST system consisted of two
3,000-gallon gasoline USTs located at the southwestern corner of the onsite building. The USTs were in
operation from 1984 until March 2008 when they were removed from the site. Three monitoring wells (MW-
1 through MW-3) are associated with the site and one potable water supply well (WSW-1) is located on the
site property.

Properties surrounding the site are used for residential and agricultural purposes or are undeveloped. A
site topographic map is included as Figure 1. Eight water supply wells are located within 1,000 feet of the
site. Water supply well ownership information is included in Table 1. A site map depicting monitoring well
locations and other pertinent site features is included as Figure 2. A potential receptor map is included as
Figure 3. Site photographs are included as Appendix A.

3.2 SITE BACKGROUND

In August 2007, ECS Carolina, LLP, submitted a Report of Environmental Services documenting soil and
groundwater assessment activities performed at the site at the request of property owner, Mr. Chad Lynch.
During the assessment, soil borings GP-1 through GP-10 were advanced around the UST system and a
groundwater sample was collected directly downgradient of the USTs. Soil samples collected from borings
GP-7 through GP-10 contained levels of total petroleum hydrocarbons (TPH) gasoline range organics
(GRO) and/or diesel range organics (DRO) above the NCDEQ Action Level. The groundwater sample did
not contain petroleum compounds above laboratory detection limit.
Jeff’s Grocery
March 27, 2023
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ATC Project No. SLC3704103 NCDEQ State Lead Program
On March 26, 2008, Geological & Environmental Services submitted a UST Closure Report for the site.
During the closure, two 3,000-gallon gasoline USTs were removed from the site. Soil samples collected
from beneath the USTs and dispenser did not contain petroleum hydrocarbons above the respective
standards; however, the soil directly beneath the product lines indicated impact. Over excavation was
performed in the vicinity of the product lines. Following over excavation activities, samples were collected
from beneath the product lines at approximately 8 feet below ground surface (bgs) and contained soil
impacts above Soil-to-Groundwater Maximum Soil Contaminant Concentrations (MSCCs). Approximately
50 tons of soil was removed from the site during the UST Closure.

On April 29, 2011, Terraquest Environmental Consultants, P.C. submitted a Receptor Survey and Water
Supply Well Sampling Report. Based on the results of the receptor survey, nine active water supply wells
were located within 1,000 feet of the site. In November 2019, the owner of WSW-2 previously indicated
there is no water supply well at this location; however, he does plan on installing a water supply well in the
future. Water supply wells WSW-1 through WSW-6 were sampled in March and April 2011. Lead was
detected in water supply wells WSW-5 and WSW-6 above the 2L Standard. Based on a 2-step, first draw
method of sampling, it was determined the source of lead for WSW-5 was from the home supply line while
the source of lead for WSW-6 was the groundwater. No other compounds were detected in the samples.

On June 18, 2015, ATC submitted a Letter Report documenting a water supply well sampling event. During
the event, samples were collected from water supply wells WSW-1, WSW-3, WSW-5, and WSW-6.
Chloromethane was detected in water supply well WSW-6 at a concentration of 0.36 micrograms per liter
(g/L), which is below the laboratory reporting limit as well as the 2L Standard. No other compounds were
detected is the water supply well samples. Water supply well information is included in Table 1 and historical
water supply well data is included as Table 2. ATC recommended completion of a soil assessment around
historical soil borings GP-7, GP-8, GP-9, and GP-10 to determine current soil impacts at the site.

On October 8, 2015, ATC submitted a Soil Assessment Report documenting the collection of four soil
samples (SB-1 through SB-4). The soil borings were placed in the vicinity of former soil borings GP-7
through GP-10 to determine current soil concentrations at the site. Based on the laboratory results, it
appears compounds are attenuating in the soil. ATC recommended installing one monitoring well in the
vicinity of the former product lines to determine impacts to groundwater.

On June 3, 2016, ATC submitted a Groundwater Monitoring Report documenting the installation and
sampling of monitoring well MW-1. The sample collected from MW-1 indicated MTBE above the 2L
Standard. ATC recommended installing two additional monitoring wells to determine groundwater flow
direction, placement of O-SOX in monitoring well MW-1, and performing a water supply well sampling event.

On August 27, 2016, ATC submitted a Water Supply Well Sampling Letter Report documenting the
sampling of water supply wells WSW-1, WSW-3, WSW-4, and WSW-5. No compounds were detected. The
report also documented the placement of O-SOX in monitoring well MW-1. ATC recommended sampling
monitoring well MW-1 in January 2017.

On May 11, 2017, ATC submitted a Groundwater Sampling Letter Report documenting the sampling of
monitoring well MW-1 and water supply well WSW-1. Monitoring well MW-1 indicated MTBE and
naphthalene above the 2L Standards. No compounds were detected in water supply well WSW-1. ATC
recommended placement of O-SOX in monitoring well MW-1 with sampling of MW-1 three months later.

On May 14, 2018, ATC submitted a Groundwater Sampling Letter Report documenting the sampling of
water supply wells WSW-1, WSW-3, WSW-4, and WSW-5. Monitoring well MW-1 indicated MTBE above
the 2L Standard. No compounds were detected in water supply wells WSW-1, WSW-3, WSW-4, or WSW-
5. ATC recommended placement of O-SOX in monitoring well MW-1 with sampling of MW-1 three months
later.

On June 25, 2019, ATC submitted a Groundwater Monitoring Report documenting the sampling of water
supply wells WSW-1, WSW-3, WSW-4, and WSW-5. Monitoring well MW-1 indicated MTBE above the 2L
Jeff’s Grocery
March 27, 2023
Page 4 of 5

ATC Project No. SLC3704103 NCDEQ State Lead Program
Standard. No compounds were detected in the water supply wells. ATC recommended installing and
sampling two additional monitoring wells at the site to delineate groundwater impact and to determine
groundwater flow direction.

On February 7, 2020, ATC submitted a Groundwater Monitoring Report documenting the installation of
monitoring wells MW-2 and MW-3 and the sampling of monitoring wells MW-1, MW-2, and MW-3 and water
supply wells WSW-1, WSW-3, WSW-4, and WSW-5. Monitoring well MW-1 indicated MTBE above the
corresponding 2L Standard. Monitoring wells MW-2 and MW-3 did not contain compounds exceeding the
2L Standards. No compounds were detected in the water supply wells.

On January 28, 2021, ATC submitted a Groundwater Monitoring Report documenting the sampling of
monitoring wells MW-1, MW-2, and MW-3 and water supply wells WSW-1, WSW-3, and WSW-5. Monitoring
well MW-1 indicated MTBE above the 2L Standard. No compounds were detected in water supply wells
WSW-1, WSW-3, or WSW-5. ATC recommended groundwater and water supply well sampling on an
annual basis.

On February 19, 2022, ATC submitted a Groundwater Monitoring Report documenting the sampling of
monitoring wells MW-1, MW-2, and MW-3 and water supply well WSW-1. Monitoring well MW-1 indicated
MTBE above the 2L Standard. No compounds were detected in water supply well WSW-1. ATC
recommended groundwater and water supply well sampling on an annual basis.

This report documents the groundwater and water supply well sampling event on February 14, 2023.

4.0 GROUNDWATER ASSESSMENT ACTIVITIES

4.1 GROUNDWATER LEVELS

On February 14, 2023, groundwater level measurements and samples were collected from monitoring wells
MW-1, MW-2, and MW-3. Monitoring well construction details and groundwater elevation data are
summarized in Table 3. Light non-aqueous phase liquid (LNAPL) was not observed in any of the monitoring
wells that were gauged. Depth to groundwater measurements ranged from 26.85 feet bgs in MW-2 to 32.11
feet bgs in MW-3. A groundwater elevation contour map generated using the February 2023 groundwater
elevation data is included as Figure 4. This figure indicates that the direction of groundwater flow at the
site is to the east, which is consistent with historical data. Field notes from the sampling event are included
in Appendix B.

4.2 GROUNDWATER QUALITY

On February 14, 2023, groundwater samples were collected from monitoring wells MW-1, MW-2, and MW-
3. Samples were collected in laboratory-approved containers, packed in ice and delivered under chain of
custody protocol to Pace Analytical in Mount Juliet, Tennessee (Pace) for analyses. Groundwater samples
were analyzed for volatile organic compounds (VOCs) by Standard Method 6200B.

The analytical results were compared to the 2L Standards and GCLs. MTBE was detected in MW-1 at 53.1
µg/l, exceeding the 2L Standard but below the respective GCL. No compounds were detected above the
2L Standard in wells MW-2 and MW-3. A comparison of the current analytical results (February 14, 2023)
to the results of the previous sampling event (January 12, 2022) indicates a slight increase in MTBE
concentrations in MW-1. A review of all historical data exhibits an overall decreasing trend for MTBE
concentrations in MW-1. Monitoring well analytical results are included in Table 4. Measured field
parameters are summarized in Table 5. A MTBE isoconcentration contour map is included as Figure 5.
The laboratory analytical report and chain-of-custody forms are included in Appendix C.

As part of ATC’s quality assurance and quality control (QA and QC) measures, a data review of the
laboratory report was conducted. During the review, it was concluded that samples were received by the
laboratory in acceptable condition and properly preserved. Samples were analyzed within the correct
Jeff’s Grocery
March 27, 2023
Page 5 of 5

ATC Project No. SLC3704103 NCDEQ State Lead Program
holding times, and the chain of custody was properly completed by all parties. ATC collected a field blank
and laboratory analysis of the field blank (FB-1) yielded concentrations of acetone, 2-butanone, and
methylene chloride which exceeded the laboratory detection limit but did not exceed the laboratory reported
detection limit. These compounds are typically associated with laboratory contaminants and are not likely
associated with the release. The laboratory QC report shows an internal blank was analyzed for each
method that was used for the original samples. The laboratory fortified blank (LFB) and laboratory control
sample (LCS) data results were also provided for each analytical method. Refer to the laboratory report in
Appendix C for details regarding QA results for the laboratory samples and any noted exceptions. Overall,
ATC concludes that the laboratory results are usable and any exceptions do not significantly impact the
conclusions presented in this report.

4.3 WATER SUPPLY WELLS

Eight active water supply wells are located within 1,000 feet of the site. Municipal water is not available in
the vicinity of the site. Table 1 presents the water supply well ownership information and Figure 3 depicts
the water supply well locations.

ATC collected a groundwater sample from onsite water supply well WSW-1 during the February 14, 2023,
sampling event. The sample was collected in laboratory-approved containers, packed in ice and delivered
under chain of custody protocol to Pace for analyses. The sample was analyzed for VOCs by Standard
Method 6200B. The sample yielded a concentration of TCE, which exceeded the laboratory method
detection limit but did not exceed the laboratory reported detection limit or the 2L Standard. Concentrations
of TCE have not been historically detected in WSW-1. The water supply well analytical results are
summarized in Table 2. The QA and QC measures and conditions applicable to the monitoring well
sampling also apply to the water supply well sampling. The laboratory analytical report and chain-of-custody
forms are included in Appendix C.

5.0 CONCLUSIONS AND RECOMMENDATIONS

On behalf of the Trust Fund Branch of the UST Section, ATC completed a Groundwater Monitoring Report
documenting the February 2023 groundwater sampling activities at the Jeff’s Grocery property located at
2996 NC Highway 268 in Pinnacle, Stokes County, North Carolina. Groundwater samples were collected
from monitoring wells MW-1, MW-2, and MW-3 and water supply well WSW-1.

Results from the monitoring event indicated MTBE above 2L Standard but below the GCL in monitoring
well MW-1. No compounds were detected above the 2L Standard in wells MW-2 and MW-3. Water supply
well sample WSW-1 contained a concentration of TCE exceeding the laboratory detection limit, but below
the laboratory reporting limit and 2L Standard.

The site is not a candidate for closure due to the presence of potable water supply wells within 1,000 feet
of the site, most notably WSW-1 located on the source property. ATC recommends groundwater and water
supply well sampling on an annual basis. If funding is available, ATC recommends delineating the horizontal
and vertical extent of the groundwater plume.

Jeff’s Grocery

ATC Project No. SLC3704103 NCDEQ State Lead Program
TABLES
TABLE 1
WATER SUPPLY WELL INFORMATION
JEFF'S GROCERY
2996 NC HIGHWAY 268
PINNACLE, STOKES COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #37041
Well ID Well Owner/Address Well Address Telephone Number Well Use Distance from Source
Area (ft.)
Up or Down
Gradient Comments
WSW-1
WSW LLC
522 Tom Cook Road
Mount Airy, NC 27030
2996 NC Highway 268 336-406-4970 Drinking 75 feet Northeast Site Parcel # 25533
WSW-2
Danny L. Segraves
1048 Osborne Joyce Road
Pinnacle, NC 27043
1048 Osborne Joyce Road 336-351-5193
Owner indicated well
no longer present on
property
435 feet North-
northwest Upgradient Parcel # 25528
WSW-3
Jason M. and Jessica L McLeod
1012 Oscar Frye Road
Pinnacle, NC 27043
1012 Oscar Frye Road Unknown Drinking 250 feet South Cross-gradient Parcel # 25538
WSW-4
Dalmar M. and Dennis A. Collins
1026 Oscar Frye Road
Pinnacle, NC 27043
1026 Oscar Frye Road 336-351-3451 Drinking 360 feet South Cross-gradient Parcel # 25539
WSW-5
Teresa Sue Jackson
1040 Oscar Frye Road
Pinnacle, NC 27043
1040 Oscar Frye Road Unknown Drinking 490 feet South Cross-gradient Parcel # 25534
WSW-6
Anthony Kriegel and Mary Manor
1050 Oscar Frye Road
Pinnacle, NC 27043
1050 Oscar Frye Road Unknown Drinking 625 feet South Cross-gradient Parcel # 25535
WSW-7
Todd and Betty Rasmussen
1062 Oscar Frye Road
Pinnacle, NC 27043
1062 Oscar Frye Road Unknown Drinking 785 feet South Cross-gradient Parcel # 25536
WSW-8
Rochelle Martin Tuttle
129 Travis Hill Road
Monks Corner, SC 29461
1080 Oscar Frye Road Unknown Drinking 930 feet South Cross-gradient Parcel # 25537
WSW-12
Kenny Hill and Jessica Stevens
1020 Booga Booga Lane
Pinnacle, NC 27043
1020 Booga Booga Lane Unknown Drinking 975 feet Northeast Downgradient Parcel # 32258
1. Information obtained from the April 29, 2011 Terraquest Environmental Consultants, P.C. Receptor Survey and Water Supply Well Sampling.
2. Only water supply wells located within 1,000 feet of the site are included.
3. Ownership information verified using Stokes County Geographic Information System website, updated February 28, 2023.
Page 1 of 1
TABLE 2
WATER SUPPLY WELL ANALYTICAL RESULTS
JEFF'S GROCERY
2996 NC HIGHWAY 268
PINNACLE, STOKES COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #37041
6020 A
Trichloroethylene9/10/2007 <0.25 <0.25 <0.25 <0.75 <0.25 NA <0.25 <0.25 <0.25 <0.50 --NA
3/17/2011 <0.054 <0.057 <0.054 <0.17 <0.056 <0.042 <0.038 <0.038 <0.0042 NA --<0.73
5/12/2015 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.18 <0.10 <0.089 <0.32 --NA
7/7/2016 <0.12 <0.17 <0.13 <0.26 <0.090 <0.18 <0.18 <0.13 <0.15 <0.55 --NA
4/12/2017 <0.12 <0.17 <0.13 <0.26 <0.090 <0.18 <0.18 <0.13 <0.15 <0.55 --NA
3/22/2018 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.1 <0.2 --NA
5/24/2019 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 --NA
11/20/2019 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA --NA
12/9/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA --NA
1/12/2022 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 --NA
2/14/2023 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <1.00 <1.00 <1.00 <2.50 0.485 J NA
WSW-2 3/17/2011 <0.054 <0.057 <0.054 <0.17 <0.056 <0.042 <0.038 <0.038 <0.0042 NA --<0.73
3/17/2011 <0.054 <0.057 <0.054 <0.17 <0.056 <0.042 <0.038 <0.038 <0.0042 NA --<0.73
5/12/2015 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.18 <0.10 <0.089 NA --NA
7/7/2016 <0.12 <0.17 <0.13 <0.26 <0.090 <0.18 <0.18 <0.13 <0.15 <0.55 --NA
3/22/2018 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.1 <0.2 --NA
5/24/2019 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 --NA
11/20/2019 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA --NA
12/9/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA --NA
3/17/2011 <0.054 <0.057 <0.054 <0.17 <0.056 <0.042 <0.038 <0.038 <0.0042 <0.32 --<0.73
3/22/2018 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.1 <0.2 --<0.73
5/24/2019 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 --NA
11/20/2019 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 NA NA --NA
3/17/2011 <0.054 <0.057 <0.054 <0.17 <0.056 <0.042 <0.038 <0.038 <0.0042 NA --29
4/21/11 A NA NA NA NA NA NA NA NA NA NA --7.9
4/21/11 B NA NA NA NA NA NA NA NA NA NA --<0.73
5/12/2015 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.18 <0.10 <0.089 <0.32 --NA
7/7/2016 <0.12 <0.17 <0.13 <0.26 <0.090 <0.18 <0.18 <0.13 <0.15 <0.55 --NA
3/22/2018 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.1 <0.2 --NA
5/24/2019 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 --NA
11/20/2019 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 NA --NA
12/9/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA --NA
3/17/2011 <0.054 <0.057 <0.054 <0.17 <0.056 <0.042 <0.038 <0.038 <0.0042 NA --87
4/21/11 A NA NA NA NA NA NA NA NA NA NA --28
4/21/11 B NA NA NA NA NA NA NA NA NA NA --31
5/12/2015 <0.079 <0.090 <0.092 <0.29 <0.090 <0.18 <0.18 <0.10 <0.089 0.36 J --<0.22
1 600 600 500 20 70 400 400 0.02 3 3 15
5,000 260,000 80,000 50,000 20,000 70,000 28,500 24,100 50 3,000 3,000 15,000
Notes:
1. MTBE = Methyl Tertiary Butyl Ether.
2. IPE = Isopropyl Ether.
3. EDB = 1,2-Dibromoethane
4. "<" = Not detected at or above the laboratory reporting limit.
5. Concentrations are reported in micrograms per liter (mg/l) = parts per billion (ppb).
6. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard).
7. GCL = Gross Contamination Limit.
8. NA = Not Analyzed.LeadEthylbenzene2L Standard (µg/L)
WSW-3
WSW-5 BenzeneChloromethane WSW-1
GCL (µg/L)
ANALYTICAL METHOD
Toluene1,2,4-TrimethylbenzeneXylenes (Total)6200B
10. -- = Not previously detected or reported.
9. J = Indicates constituent was detected above laboratory detection limit but below laboratory reporting limit.MTBE1,3,5-TrimethylbenzeneEDBWSW-6
WSW-4
WELL ID Date
Collected
IPEPage 1 of 1
TABLE 3
MONITORING WELL CONSTRUCTION AND GROUNDWATER ELEVATION DATA
JEFF'S GROCERY
2996 NC HIGHWAY 268
PINNACLE, STOKES COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #37041
Well ID Date Installed Screened
Interval (ft bgs)
Depth of Well
(feet bgs)
Top of Casing
Elevation (ft.)
Date Water
Level
Measured
Depth to Water Groundwater
Elevation
3/17/2016 29.00 71.00
4/12/2017 31.99 68.01
3/22/2018 31.43 68.57
5/24/2019 29.87 70.13
11/20/2019 29.66 70.34
12/9/2020 28.96 71.04
1/12/2022 29.74 70.26
2/14/2023 29.70 70.30
11/20/2019 26.73 71.88
12/9/2020 25.07 73.54
1/12/2022 26.79 71.82
2/14/2023 26.85 71.76
11/20/2019 32.02 68.44
12/9/2020 31.80 68.66
1/12/2022 32.07 68.39
2/14/2023 32.11 68.35
Notes:
1. TOC = Top of casing.
2. TOC Elevations for monitoring well MW-1, MW-2, and MW-3 were surveyed by ATC on November 19, 2019.
MW-1 3/3/16 15-35 35 100.00
98.613520-3511/19/19MW-2
MW-3 11/19/19 20-35 35 100.46
Page 1 of 1
TABLE 4
GROUNDWATER ANALYTICAL RESULTS
JEFF'S GROCERY
2996 NC HIGHWAY 268
PINNACLE, STOKES COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #37041
504.1 3030C/
6020A
GW-1 7/26/2007 BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL BQL NA BQL BQL NA NA NA
3/17/2016 <0.12 15 13 80 76 1 <0.12 5.2 26 13 0.34J 1.3 0.19J 1.2 3.5 NA <0.02 13 140 <100 250
4/12/2017 <2.0 17 13 71 220 2.9 <2.0 6.7 9.1 5.7 <2.0 0.76J <2.0 1.3J 2.8 NA NA NA NA NA NA
3/22/2018 <0.5 2.4 2 15.9 82.5 0.79 <0.1 <0.5 <0.5 1.4 <0.5 <0.5 <0.5 <0.5 0.6 NA NA NA NA NA NA
5/24/2019 <0.5 <0.5 <0.5 <0.5 75.1 0.85 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 NA NA NA NA NA NA
11/20/2019 <0.50 1.3 1.4 6.8 67.4 0.74 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.65 <0.50 NA NA NA NA NA
12/9/2020 <0.50 2.3 5.9 82.1 100 1.4 <0.50 1.7 19.7 19.4 <0.50 <0.50 <0.50 1.4 2.9 <0.50 NA NA NA NA NA
1/12/2022 <1.00 0.750 J 3.1 32.5 36.9 0.353 J <1.00 2.01 J 9.39 9.57 0.126 J <1.00 0.631 J 0.490 J 1.19 <5.00 NA NA NA NA NA
2/14/2023 <1.00 <1.00 0.299 J 8.36 53.1 0.584 J <1.00 <5.00 1.69 8.33 <1.00 <1.00 0.318 J <1.00 0.119 J <5.00 NA NA NA NA NA
11/20/2019 <0.50 <0.50 0.54 4.3 11.8 <0.50 <0.50 <0.50 1.5 1.3 <0.50 <0.50 <0.50 <0.50 <0.50 0.86 NA NA NA NA NA
12/9/2020 <0.50 <0.50 <0.50 <0.50 15.5 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.96 NA NA NA NA NA
1/12/2022 <1.00 <1.00 <1.00 0.710 J 4.91 <1.00 <1.00 <5.00 <1.00 0.61 <1.00 <1.00 <1.00 <1.00 <1.00 0.162 J NA NA NA NA NA
2/14/2023 <1.00 <1.00 <1.00 <3.00 3.84 <1.00 <1.00 <5.00 <1.00 0.248 J <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 NA NA NA NA NA
11/20/2019 <0.50 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA NA
12/9/2020 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA NA NA NA
1/12/2022 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 NA NA NA NA NA
2/14/2023 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 NA NA NA NA NA
1 600 600 500 20 70 0.02 6 400 400 70 70 25 70 70 70 0.02 15 400 700 200
5,000 260,000 80,000 50,000 20,000 70,000 50 6,000 28,500 24,100 8,800 5,900 11,700 30,500 26,100 70,000 50 15,000 NE NE NE
Notes:
1. MTBE = Methyl Tertiary Butyl Ether.
2. IPE = Isopropyl Ether.
3. EDB = 1,2-Dibromoethane
4. "<" or BQL = Not detected at or above the laboratory reporting limit or laboratory reporting limit.
5. Concentrations are reported in micrograms per liter (mg/l) = parts per billion (ppb).
6. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard).
7. GCL = Gross Contamination Level.
8. NE = Not established.
10. NA = Not Analyzed.
11. C9-C18 Aliphatic concentrations equal C9-C12 aliphatic concentrations reported in the laboratory report.
12. C9-C22 Aromatic concentrations equal C9-C10 aromatic concentrations reported in the laboratory report.Leadn-Butylbenzenep-IsopropyltolueneEthylbenzeneMW-3
9. J = Indicates constituent was detected above laboratory detection limit but below laboratory reporting limit.1,2,4-TrimethylbenzeneMW-2
MW-1 Xylenes (Total)NaphthaleneGCL
2L Standard
MADEP VPH
WELL ID Date
Collected
BenzeneTolueneC9-C18 AliphaticsC5-C8 Aliphatics1,3,5-TrimethylbenzeneIPEC9-C22 AromaticsEDBn-Propylbenzenesec-ButylbenzeneIsopropylbenzeneChloroformANALYTICAL METHOD
MTBEEDB6200B
Page 1 of 1
TABLE 5
FIELD PARAMETERS
JEFF'S GROCERY
2996 NC HIGHWAY 268
PINNACLE, STOKES COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #37041
11/20/2019 17.1 7.87 152.6 6.70 -118.2
12/9/2020 16.8 7.53 68.7 5.50 122.5
1/12/2022
2/14/2023 18.9 5.05 35.8 5.63 242.2
11/20/2019 16.9 8.42 77.5 5.47 -98.9
12/9/2020 16.7 7.58 99.7 5.21 174.3
1/12/2022 13.5 NM NM 5.06 185.7
2/14/2023 17.5 5.53 84.6 4.77 283.1
11/20/2019 17.3 6.83 37.4 6.02 -109.4
12/9/2020 16.8 6.94 64.3 4.27 167.2
1/12/2022 11.8 NM NM 5.76 143.2
2/14/2023 18.2 6.16 31.3 5.26 234.7
Notes:
1. oC = Degrees Celsius.
2. mg/L = milligrams per liter.
3. µs/cm = micro Siemens per centimeter.
4. SU = Standard Units.
5. ORP = Oxidation Reduction Potential.
6. mV = Millivolts.
7. NM = Not measured.
8. Due to calibration issues dissolved oxygen concentrations could not be recorded on 1/12/2022.
9. Conductivity was not measured on 1/12/2022. Specific conductivity was mistakenly recorded.
MW-2
NM - Petroleum Odor PresentMW-1
MW-3 ORP (mV)WELL ID Date
Collected
Temperature (oC)Dissolved Oxygen (mg/L)Conductivity (us/cm)pH (SU)Page 1 of 1
Jeff’s Grocery

ATC Project No. SLC3704103 NCDEQ State Lead Program
FIGURES
2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
[phone]
FIGURE 1
SITE TOPOGRAPHIC MAP
PROJECT NO: SLC3740103
REVIEWED BY: AW SCALE: 1:24 000 DATE: 03/10/2022
JEFF’S GROCERY –INCIDENT #37041
2996 NC HIGHWAY 268
PINNACLE, NORTH CAROLINA
N
SITE
Quadrangle: Pilot Mountain, North Carolina USGS 2013 Topographic Map available at http://store.usgs.gov/
2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
[phone]
FIGURE 3
POTENTIAL RECEPTOR MAP
PROJECT NO: SLC3740103
REVIEWED BY: AW SCALE: 1” = 275’DATE: 03/10/2022
JEFF’S GROCERY –INCIDENT #37041
2996 NC HIGHWAY 268
PINNACLE, NORTH CAROLINA
Source: Stokes County NC GIS
500 Foot Radius
1,000 Foot Radius
Destroyed Water Supply Well
Water Supply Well
Parcel/Well Identification
GIS Address Marker
WSW-5
N
SITE
WSW-12
WSW-1
WSW-2
WSW-3
WSW-5
WSW-6
WSW-7
WSW-16
WSW-4
WSW-8
20
Jeff’s Grocery

ATC Project No. SLC3704103 NCDEQ State Lead Program
APPENDIX A

SITE PHOTOGRAPHS
Photo #1: A view of the current Jeff’s Grocery site (facing north).
Photo #2: An additional view of the current Jeff’s Grocery site (facing northeast).
ATC Associates of North Carolina, P.C.
2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
[phone]
SITE PHOTOGRAPHS
ATC PROJECT NO: SLC3704103
REVIEWED BY: AO DATE: 03/27/23 PHOTOS BY: NK
JEFF'S GROCERY
2996 NC HIGHWAY 268
PINNACLE, STOKES COUNTY, NORTH CAROLINA
UST INCIDENT #37041
Photo #3: A view of monitoring well MW-1.
Photo #4: A view of monitoring well MW-2.
ATC Associates of North Carolina, P.C.
2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
[phone]
SITE PHOTOGRAPHS
ATC PROJECT NO: SLC3704103
REVIEWED BY: AO DATE: 03/27/23 PHOTOS BY: NK
JEFF'S GROCERY
2996 NC HIGHWAY 268
PINNACLE, STOKES COUNTY, NORTH CAROLINA
UST INCIDENT #37041
Photo #5: A view of monitoring well MW-3.
Photo #6: A view of the water supply well WSW-1 sampling location.
ATC Associates of North Carolina, P.C.
2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
[phone]
SITE PHOTOGRAPHS
ATC PROJECT NO: SLC3704103
REVIEWED BY: AO DATE: 03/27/23 PHOTOS BY: NK
JEFF'S GROCERY
2996 NC HIGHWAY 268
PINNACLE, STOKES COUNTY, NORTH CAROLINA
UST INCIDENT #37041
Jeff’s Grocery

ATC Project No. SLC3704103 NCDEQ State Lead Program
APPENDIX B

FIELD NOTES

Jeff’s Grocery

ATC Project No. SLC3704103 NCDEQ State Lead Program
APPENDIX C

LABORATORY ANALYTICAL RESULTS
ANALYTICAL REPORT
February 23, 2023
ATC Group Services LLC
Sample Delivery Group:L1586419
Samples Received:02/16/2023
Project Number:
Description:Jeff's Grocery
Report To:Ashley Winkelman
2725 E. Millbrook Road, Ste 121
Raleigh, NC 27604
Entire Report Reviewed By:
February 23, 2023
[Preliminary Report]
Heather J Wagner
Project Manager
Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received.
Pace Analytical National
12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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February 23, 2023
Heather J Wagner
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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TABLE OF CONTENTS
Cp: Cover Page 1
Tc: Table of Contents 2
Ss: Sample Summary 3
Cn: Case Narrative 4
Sr: Sample Results 5
MW-1 L1586419-01 5
MW-2 L1586419-02 7
MW-3 L1586419-03 9
WSW-1 L1586419-04 11
FB-1 L1586419-05 13
Qc: Quality Control Summary 15
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 15
Gl: Glossary of Terms 23
Al: Accreditations & Locations 24
Sc: Sample Chain of Custody 25
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-1 L1586419-01 GW N.Kramer 02/14/23 11:20 02/16/23 09:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2010790 1 02/23/23 12:37 02/23/23 12:37 JBE Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-2 L1586419-02 GW N.Kramer 02/14/23 10:50 02/16/23 09:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2010790 1 02/23/23 12:58 02/23/23 12:58 JBE Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-3 L1586419-03 GW N.Kramer 02/14/23 11:10 02/16/23 09:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2010790 1 02/23/23 13:18 02/23/23 13:18 JBE Mt. Juliet, TN
Collected by Collected date/time Received date/time
WSW-1 L1586419-04 GW N.Kramer 02/14/23 11:40 02/16/23 09:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2008116 1 02/17/23 18:09 02/17/23 18:09 JHH Mt. Juliet, TN
Collected by Collected date/time Received date/time
FB-1 L1586419-05 GW N.Kramer 02/14/23 11:45 02/16/23 09:45
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2008116 1 02/17/23 14:45 02/17/23 14:45 JHH Mt. Juliet, TN
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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CASE NARRATIVE
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Heather J Wagner
Project Manager
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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Heather J Wagner
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 01
L1586419
MW-1
Collected date/time: 02/14/23 11:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/23/2023 12:37 WG2010790
Acrolein U 2.54 50.0 1 02/23/2023 12:37 WG2010790
Acrylonitrile U 0.671 10.0 1 02/23/2023 12:37 WG2010790
Benzene U 0.0941 1.00 1 02/23/2023 12:37 WG2010790
Bromobenzene U 0.118 1.00 1 02/23/2023 12:37 WG2010790
Bromodichloromethane U 0.136 1.00 1 02/23/2023 12:37 WG2010790
Bromoform U 0.129 1.00 1 02/23/2023 12:37 WG2010790
Bromomethane U 0.605 5.00 1 02/23/2023 12:37 WG2010790
n-Butylbenzene U 0.157 1.00 1 02/23/2023 12:37 WG2010790
sec-Butylbenzene U J4 0.125 1.00 1 02/23/2023 12:37 WG2010790
tert-Butylbenzene U 0.127 1.00 1 02/23/2023 12:37 WG2010790
Carbon tetrachloride U 0.128 1.00 1 02/23/2023 12:37 WG2010790
Chlorobenzene U 0.116 1.00 1 02/23/2023 12:37 WG2010790
Chlorodibromomethane U 0.140 1.00 1 02/23/2023 12:37 WG2010790
Chloroethane U 0.192 5.00 1 02/23/2023 12:37 WG2010790
Chloroform U 0.111 5.00 1 02/23/2023 12:37 WG2010790
Chloromethane U 0.960 2.50 1 02/23/2023 12:37 WG2010790
2-Chlorotoluene U 0.106 1.00 1 02/23/2023 12:37 WG2010790
4-Chlorotoluene U 0.114 1.00 1 02/23/2023 12:37 WG2010790
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/23/2023 12:37 WG2010790
1,2-Dibromoethane U 0.126 1.00 1 02/23/2023 12:37 WG2010790
Dibromomethane U 0.122 1.00 1 02/23/2023 12:37 WG2010790
1,2-Dichlorobenzene U 0.107 1.00 1 02/23/2023 12:37 WG2010790
1,3-Dichlorobenzene U 0.110 1.00 1 02/23/2023 12:37 WG2010790
1,4-Dichlorobenzene U 0.120 1.00 1 02/23/2023 12:37 WG2010790
Dichlorodifluoromethane U 0.374 5.00 1 02/23/2023 12:37 WG2010790
1,1-Dichloroethane U 0.100 1.00 1 02/23/2023 12:37 WG2010790
1,2-Dichloroethane U 0.0819 1.00 1 02/23/2023 12:37 WG2010790
1,1-Dichloroethene U 0.188 1.00 1 02/23/2023 12:37 WG2010790
cis-1,2-Dichloroethene U 0.126 1.00 1 02/23/2023 12:37 WG2010790
trans-1,2-Dichloroethene U 0.149 1.00 1 02/23/2023 12:37 WG2010790
1,2-Dichloropropane U 0.149 1.00 1 02/23/2023 12:37 WG2010790
1,1-Dichloropropene U 0.142 1.00 1 02/23/2023 12:37 WG2010790
1,3-Dichloropropane U 0.110 1.00 1 02/23/2023 12:37 WG2010790
2,2-Dichloropropane U 0.161 1.00 1 02/23/2023 12:37 WG2010790
Di-isopropyl ether 0.584 J 0.105 1.00 1 02/23/2023 12:37 WG2010790
Ethylbenzene 0.299 J 0.137 1.00 1 02/23/2023 12:37 WG2010790
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/23/2023 12:37 WG2010790
Isopropylbenzene U 0.105 1.00 1 02/23/2023 12:37 WG2010790
p-Isopropyltoluene 0.318 J 0.120 1.00 1 02/23/2023 12:37 WG2010790
2-Butanone (MEK)U 1.19 10.0 1 02/23/2023 12:37 WG2010790
Methylene Chloride U 0.430 5.00 1 02/23/2023 12:37 WG2010790
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/23/2023 12:37 WG2010790
Methyl tert-butyl ether 53.1 0.101 1.00 1 02/23/2023 12:37 WG2010790
Naphthalene U 1.00 5.00 1 02/23/2023 12:37 WG2010790
n-Propylbenzene 0.119 J 0.0993 1.00 1 02/23/2023 12:37 WG2010790
Styrene U 0.118 1.00 1 02/23/2023 12:37 WG2010790
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/23/2023 12:37 WG2010790
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/23/2023 12:37 WG2010790
Tetrachloroethene U 0.300 1.00 1 02/23/2023 12:37 WG2010790
Toluene U 0.278 1.00 1 02/23/2023 12:37 WG2010790
1,2,3-Trichlorobenzene U J3 0.230 1.00 1 02/23/2023 12:37 WG2010790
1,2,4-Trichlorobenzene U J3 0.481 1.00 1 02/23/2023 12:37 WG2010790
1,1,1-Trichloroethane U 0.149 1.00 1 02/23/2023 12:37 WG2010790
1,1,2-Trichloroethane U 0.158 1.00 1 02/23/2023 12:37 WG2010790
Trichloroethene U 0.190 1.00 1 02/23/2023 12:37 WG2010790
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 01
L1586419
MW-1
Collected date/time: 02/14/23 11:20
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/23/2023 12:37 WG2010790
1,2,3-Trichloropropane U 0.237 2.50 1 02/23/2023 12:37 WG2010790
1,2,4-Trimethylbenzene 1.69 0.322 1.00 1 02/23/2023 12:37 WG2010790
1,3,5-Trimethylbenzene 8.33 0.104 1.00 1 02/23/2023 12:37 WG2010790
Vinyl chloride U 0.234 1.00 1 02/23/2023 12:37 WG2010790
o-Xylene 6.16 0.174 1.00 1 02/23/2023 12:37 WG2010790
m&p-Xylenes 2.20 0.430 2.00 1 02/23/2023 12:37 WG2010790
(S) Toluene-d8 109 80.0-120 02/23/2023 12:37 WG2010790
(S) 4-Bromofluorobenzene 101 77.0-126 02/23/2023 12:37 WG2010790
(S) 1,2-Dichloroethane-d4 98.9 70.0-130 02/23/2023 12:37 WG2010790
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 02
L1586419
MW-2
Collected date/time: 02/14/23 10:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/23/2023 12:58 WG2010790
Acrolein U 2.54 50.0 1 02/23/2023 12:58 WG2010790
Acrylonitrile U 0.671 10.0 1 02/23/2023 12:58 WG2010790
Benzene U 0.0941 1.00 1 02/23/2023 12:58 WG2010790
Bromobenzene U 0.118 1.00 1 02/23/2023 12:58 WG2010790
Bromodichloromethane U 0.136 1.00 1 02/23/2023 12:58 WG2010790
Bromoform U 0.129 1.00 1 02/23/2023 12:58 WG2010790
Bromomethane U 0.605 5.00 1 02/23/2023 12:58 WG2010790
n-Butylbenzene U 0.157 1.00 1 02/23/2023 12:58 WG2010790
sec-Butylbenzene U J4 0.125 1.00 1 02/23/2023 12:58 WG2010790
tert-Butylbenzene U 0.127 1.00 1 02/23/2023 12:58 WG2010790
Carbon tetrachloride U 0.128 1.00 1 02/23/2023 12:58 WG2010790
Chlorobenzene U 0.116 1.00 1 02/23/2023 12:58 WG2010790
Chlorodibromomethane U 0.140 1.00 1 02/23/2023 12:58 WG2010790
Chloroethane U 0.192 5.00 1 02/23/2023 12:58 WG2010790
Chloroform U 0.111 5.00 1 02/23/2023 12:58 WG2010790
Chloromethane U 0.960 2.50 1 02/23/2023 12:58 WG2010790
2-Chlorotoluene U 0.106 1.00 1 02/23/2023 12:58 WG2010790
4-Chlorotoluene U 0.114 1.00 1 02/23/2023 12:58 WG2010790
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/23/2023 12:58 WG2010790
1,2-Dibromoethane U 0.126 1.00 1 02/23/2023 12:58 WG2010790
Dibromomethane U 0.122 1.00 1 02/23/2023 12:58 WG2010790
1,2-Dichlorobenzene U 0.107 1.00 1 02/23/2023 12:58 WG2010790
1,3-Dichlorobenzene U 0.110 1.00 1 02/23/2023 12:58 WG2010790
1,4-Dichlorobenzene U 0.120 1.00 1 02/23/2023 12:58 WG2010790
Dichlorodifluoromethane U 0.374 5.00 1 02/23/2023 12:58 WG2010790
1,1-Dichloroethane U 0.100 1.00 1 02/23/2023 12:58 WG2010790
1,2-Dichloroethane U 0.0819 1.00 1 02/23/2023 12:58 WG2010790
1,1-Dichloroethene U 0.188 1.00 1 02/23/2023 12:58 WG2010790
cis-1,2-Dichloroethene U 0.126 1.00 1 02/23/2023 12:58 WG2010790
trans-1,2-Dichloroethene U 0.149 1.00 1 02/23/2023 12:58 WG2010790
1,2-Dichloropropane U 0.149 1.00 1 02/23/2023 12:58 WG2010790
1,1-Dichloropropene U 0.142 1.00 1 02/23/2023 12:58 WG2010790
1,3-Dichloropropane U 0.110 1.00 1 02/23/2023 12:58 WG2010790
2,2-Dichloropropane U 0.161 1.00 1 02/23/2023 12:58 WG2010790
Di-isopropyl ether U 0.105 1.00 1 02/23/2023 12:58 WG2010790
Ethylbenzene U 0.137 1.00 1 02/23/2023 12:58 WG2010790
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/23/2023 12:58 WG2010790
Isopropylbenzene U 0.105 1.00 1 02/23/2023 12:58 WG2010790
p-Isopropyltoluene U 0.120 1.00 1 02/23/2023 12:58 WG2010790
2-Butanone (MEK)U 1.19 10.0 1 02/23/2023 12:58 WG2010790
Methylene Chloride U 0.430 5.00 1 02/23/2023 12:58 WG2010790
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/23/2023 12:58 WG2010790
Methyl tert-butyl ether 3.84 0.101 1.00 1 02/23/2023 12:58 WG2010790
Naphthalene U 1.00 5.00 1 02/23/2023 12:58 WG2010790
n-Propylbenzene U 0.0993 1.00 1 02/23/2023 12:58 WG2010790
Styrene U 0.118 1.00 1 02/23/2023 12:58 WG2010790
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/23/2023 12:58 WG2010790
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/23/2023 12:58 WG2010790
Tetrachloroethene U 0.300 1.00 1 02/23/2023 12:58 WG2010790
Toluene U 0.278 1.00 1 02/23/2023 12:58 WG2010790
1,2,3-Trichlorobenzene U J3 0.230 1.00 1 02/23/2023 12:58 WG2010790
1,2,4-Trichlorobenzene U J3 0.481 1.00 1 02/23/2023 12:58 WG2010790
1,1,1-Trichloroethane U 0.149 1.00 1 02/23/2023 12:58 WG2010790
1,1,2-Trichloroethane U 0.158 1.00 1 02/23/2023 12:58 WG2010790
Trichloroethene U 0.190 1.00 1 02/23/2023 12:58 WG2010790
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 15:59 7 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 16:17 7 of 25
SAMPLE RESULTS - 02
L1586419
MW-2
Collected date/time: 02/14/23 10:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/23/2023 12:58 WG2010790
1,2,3-Trichloropropane U 0.237 2.50 1 02/23/2023 12:58 WG2010790
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/23/2023 12:58 WG2010790
1,3,5-Trimethylbenzene 0.248 J 0.104 1.00 1 02/23/2023 12:58 WG2010790
Vinyl chloride U 0.234 1.00 1 02/23/2023 12:58 WG2010790
o-Xylene U 0.174 1.00 1 02/23/2023 12:58 WG2010790
m&p-Xylenes U 0.430 2.00 1 02/23/2023 12:58 WG2010790
(S) Toluene-d8 115 80.0-120 02/23/2023 12:58 WG2010790
(S) 4-Bromofluorobenzene 111 77.0-126 02/23/2023 12:58 WG2010790
(S) 1,2-Dichloroethane-d4 101 70.0-130 02/23/2023 12:58 WG2010790
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 15:59 8 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 16:17 8 of 25
SAMPLE RESULTS - 03
L1586419
MW-3
Collected date/time: 02/14/23 11:10
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/23/2023 13:18 WG2010790
Acrolein U 2.54 50.0 1 02/23/2023 13:18 WG2010790
Acrylonitrile U 0.671 10.0 1 02/23/2023 13:18 WG2010790
Benzene U 0.0941 1.00 1 02/23/2023 13:18 WG2010790
Bromobenzene U 0.118 1.00 1 02/23/2023 13:18 WG2010790
Bromodichloromethane U 0.136 1.00 1 02/23/2023 13:18 WG2010790
Bromoform U 0.129 1.00 1 02/23/2023 13:18 WG2010790
Bromomethane U 0.605 5.00 1 02/23/2023 13:18 WG2010790
n-Butylbenzene U 0.157 1.00 1 02/23/2023 13:18 WG2010790
sec-Butylbenzene U J4 0.125 1.00 1 02/23/2023 13:18 WG2010790
tert-Butylbenzene U 0.127 1.00 1 02/23/2023 13:18 WG2010790
Carbon tetrachloride U 0.128 1.00 1 02/23/2023 13:18 WG2010790
Chlorobenzene U 0.116 1.00 1 02/23/2023 13:18 WG2010790
Chlorodibromomethane U 0.140 1.00 1 02/23/2023 13:18 WG2010790
Chloroethane U 0.192 5.00 1 02/23/2023 13:18 WG2010790
Chloroform U 0.111 5.00 1 02/23/2023 13:18 WG2010790
Chloromethane U 0.960 2.50 1 02/23/2023 13:18 WG2010790
2-Chlorotoluene U 0.106 1.00 1 02/23/2023 13:18 WG2010790
4-Chlorotoluene U 0.114 1.00 1 02/23/2023 13:18 WG2010790
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/23/2023 13:18 WG2010790
1,2-Dibromoethane U 0.126 1.00 1 02/23/2023 13:18 WG2010790
Dibromomethane U 0.122 1.00 1 02/23/2023 13:18 WG2010790
1,2-Dichlorobenzene U 0.107 1.00 1 02/23/2023 13:18 WG2010790
1,3-Dichlorobenzene U 0.110 1.00 1 02/23/2023 13:18 WG2010790
1,4-Dichlorobenzene U 0.120 1.00 1 02/23/2023 13:18 WG2010790
Dichlorodifluoromethane U 0.374 5.00 1 02/23/2023 13:18 WG2010790
1,1-Dichloroethane U 0.100 1.00 1 02/23/2023 13:18 WG2010790
1,2-Dichloroethane U 0.0819 1.00 1 02/23/2023 13:18 WG2010790
1,1-Dichloroethene U 0.188 1.00 1 02/23/2023 13:18 WG2010790
cis-1,2-Dichloroethene U 0.126 1.00 1 02/23/2023 13:18 WG2010790
trans-1,2-Dichloroethene U 0.149 1.00 1 02/23/2023 13:18 WG2010790
1,2-Dichloropropane U 0.149 1.00 1 02/23/2023 13:18 WG2010790
1,1-Dichloropropene U 0.142 1.00 1 02/23/2023 13:18 WG2010790
1,3-Dichloropropane U 0.110 1.00 1 02/23/2023 13:18 WG2010790
2,2-Dichloropropane U 0.161 1.00 1 02/23/2023 13:18 WG2010790
Di-isopropyl ether U 0.105 1.00 1 02/23/2023 13:18 WG2010790
Ethylbenzene U 0.137 1.00 1 02/23/2023 13:18 WG2010790
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/23/2023 13:18 WG2010790
Isopropylbenzene U 0.105 1.00 1 02/23/2023 13:18 WG2010790
p-Isopropyltoluene U 0.120 1.00 1 02/23/2023 13:18 WG2010790
2-Butanone (MEK)U 1.19 10.0 1 02/23/2023 13:18 WG2010790
Methylene Chloride U 0.430 5.00 1 02/23/2023 13:18 WG2010790
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/23/2023 13:18 WG2010790
Methyl tert-butyl ether U 0.101 1.00 1 02/23/2023 13:18 WG2010790
Naphthalene U 1.00 5.00 1 02/23/2023 13:18 WG2010790
n-Propylbenzene U 0.0993 1.00 1 02/23/2023 13:18 WG2010790
Styrene U 0.118 1.00 1 02/23/2023 13:18 WG2010790
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/23/2023 13:18 WG2010790
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/23/2023 13:18 WG2010790
Tetrachloroethene U 0.300 1.00 1 02/23/2023 13:18 WG2010790
Toluene U 0.278 1.00 1 02/23/2023 13:18 WG2010790
1,2,3-Trichlorobenzene U J3 0.230 1.00 1 02/23/2023 13:18 WG2010790
1,2,4-Trichlorobenzene U J3 0.481 1.00 1 02/23/2023 13:18 WG2010790
1,1,1-Trichloroethane U 0.149 1.00 1 02/23/2023 13:18 WG2010790
1,1,2-Trichloroethane U 0.158 1.00 1 02/23/2023 13:18 WG2010790
Trichloroethene U 0.190 1.00 1 02/23/2023 13:18 WG2010790
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 15:59 9 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 16:17 9 of 25
SAMPLE RESULTS - 03
L1586419
MW-3
Collected date/time: 02/14/23 11:10
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/23/2023 13:18 WG2010790
1,2,3-Trichloropropane U 0.237 2.50 1 02/23/2023 13:18 WG2010790
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/23/2023 13:18 WG2010790
1,3,5-Trimethylbenzene U 0.104 1.00 1 02/23/2023 13:18 WG2010790
Vinyl chloride U 0.234 1.00 1 02/23/2023 13:18 WG2010790
o-Xylene U 0.174 1.00 1 02/23/2023 13:18 WG2010790
m&p-Xylenes U 0.430 2.00 1 02/23/2023 13:18 WG2010790
(S) Toluene-d8 111 80.0-120 02/23/2023 13:18 WG2010790
(S) 4-Bromofluorobenzene 104 77.0-126 02/23/2023 13:18 WG2010790
(S) 1,2-Dichloroethane-d4 104 70.0-130 02/23/2023 13:18 WG2010790
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 15:59 10 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 16:17 10 of 25
SAMPLE RESULTS - 04
L1586419
WSW-1
Collected date/time: 02/14/23 11:40
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 02/17/2023 18:09 WG2008116
Acrolein U 2.54 50.0 1 02/17/2023 18:09 WG2008116
Acrylonitrile U 0.671 10.0 1 02/17/2023 18:09 WG2008116
Benzene U 0.0941 1.00 1 02/17/2023 18:09 WG2008116
Bromobenzene U 0.118 1.00 1 02/17/2023 18:09 WG2008116
Bromodichloromethane U 0.136 1.00 1 02/17/2023 18:09 WG2008116
Bromoform U 0.129 1.00 1 02/17/2023 18:09 WG2008116
Bromomethane U 0.605 5.00 1 02/17/2023 18:09 WG2008116
n-Butylbenzene U 0.157 1.00 1 02/17/2023 18:09 WG2008116
sec-Butylbenzene U 0.125 1.00 1 02/17/2023 18:09 WG2008116
tert-Butylbenzene U 0.127 1.00 1 02/17/2023 18:09 WG2008116
Carbon tetrachloride U 0.128 1.00 1 02/17/2023 18:09 WG2008116
Chlorobenzene U 0.116 1.00 1 02/17/2023 18:09 WG2008116
Chlorodibromomethane U 0.140 1.00 1 02/17/2023 18:09 WG2008116
Chloroethane U 0.192 5.00 1 02/17/2023 18:09 WG2008116
Chloroform U 0.111 5.00 1 02/17/2023 18:09 WG2008116
Chloromethane U 0.960 2.50 1 02/17/2023 18:09 WG2008116
2-Chlorotoluene U 0.106 1.00 1 02/17/2023 18:09 WG2008116
4-Chlorotoluene U 0.114 1.00 1 02/17/2023 18:09 WG2008116
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/17/2023 18:09 WG2008116
1,2-Dibromoethane U 0.126 1.00 1 02/17/2023 18:09 WG2008116
Dibromomethane U 0.122 1.00 1 02/17/2023 18:09 WG2008116
1,2-Dichlorobenzene U 0.107 1.00 1 02/17/2023 18:09 WG2008116
1,3-Dichlorobenzene U 0.110 1.00 1 02/17/2023 18:09 WG2008116
1,4-Dichlorobenzene U 0.120 1.00 1 02/17/2023 18:09 WG2008116
Dichlorodifluoromethane U 0.374 5.00 1 02/17/2023 18:09 WG2008116
1,1-Dichloroethane U 0.100 1.00 1 02/17/2023 18:09 WG2008116
1,2-Dichloroethane U 0.0819 1.00 1 02/17/2023 18:09 WG2008116
1,1-Dichloroethene U 0.188 1.00 1 02/17/2023 18:09 WG2008116
cis-1,2-Dichloroethene U 0.126 1.00 1 02/17/2023 18:09 WG2008116
trans-1,2-Dichloroethene U 0.149 1.00 1 02/17/2023 18:09 WG2008116
1,2-Dichloropropane U 0.149 1.00 1 02/17/2023 18:09 WG2008116
1,1-Dichloropropene U 0.142 1.00 1 02/17/2023 18:09 WG2008116
1,3-Dichloropropane U 0.110 1.00 1 02/17/2023 18:09 WG2008116
2,2-Dichloropropane U 0.161 1.00 1 02/17/2023 18:09 WG2008116
Di-isopropyl ether U 0.105 1.00 1 02/17/2023 18:09 WG2008116
Ethylbenzene U 0.137 1.00 1 02/17/2023 18:09 WG2008116
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/17/2023 18:09 WG2008116
Isopropylbenzene U 0.105 1.00 1 02/17/2023 18:09 WG2008116
p-Isopropyltoluene U 0.120 1.00 1 02/17/2023 18:09 WG2008116
2-Butanone (MEK)U 1.19 10.0 1 02/17/2023 18:09 WG2008116
Methylene Chloride U 0.430 5.00 1 02/17/2023 18:09 WG2008116
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/17/2023 18:09 WG2008116
Methyl tert-butyl ether U 0.101 1.00 1 02/17/2023 18:09 WG2008116
Naphthalene U 1.00 5.00 1 02/17/2023 18:09 WG2008116
n-Propylbenzene U 0.0993 1.00 1 02/17/2023 18:09 WG2008116
Styrene U 0.118 1.00 1 02/17/2023 18:09 WG2008116
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/17/2023 18:09 WG2008116
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/17/2023 18:09 WG2008116
Tetrachloroethene U 0.300 1.00 1 02/17/2023 18:09 WG2008116
Toluene U 0.278 1.00 1 02/17/2023 18:09 WG2008116
1,2,3-Trichlorobenzene U 0.230 1.00 1 02/17/2023 18:09 WG2008116
1,2,4-Trichlorobenzene U 0.481 1.00 1 02/17/2023 18:09 WG2008116
1,1,1-Trichloroethane U 0.149 1.00 1 02/17/2023 18:09 WG2008116
1,1,2-Trichloroethane U 0.158 1.00 1 02/17/2023 18:09 WG2008116
Trichloroethene 0.485 J 0.190 1.00 1 02/17/2023 18:09 WG2008116
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 15:59 11 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 16:17 11 of 25
SAMPLE RESULTS - 04
L1586419
WSW-1
Collected date/time: 02/14/23 11:40
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/17/2023 18:09 WG2008116
1,2,3-Trichloropropane U 0.237 2.50 1 02/17/2023 18:09 WG2008116
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/17/2023 18:09 WG2008116
1,3,5-Trimethylbenzene U 0.104 1.00 1 02/17/2023 18:09 WG2008116
Vinyl chloride U 0.234 1.00 1 02/17/2023 18:09 WG2008116
o-Xylene U 0.174 1.00 1 02/17/2023 18:09 WG2008116
m&p-Xylenes U 0.430 2.00 1 02/17/2023 18:09 WG2008116
(S) Toluene-d8 103 80.0-120 02/17/2023 18:09 WG2008116
(S) 4-Bromofluorobenzene 93.1 77.0-126 02/17/2023 18:09 WG2008116
(S) 1,2-Dichloroethane-d4 105 70.0-130 02/17/2023 18:09 WG2008116
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 15:59 12 of 25
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1586419 02/23/23 16:17 12 of 25
SAMPLE RESULTS - 05
L1586419
FB-1
Collected date/time: 02/14/23 11:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone 15.3 J 11.3 50.0 1 02/17/2023 14:45 WG2008116
Acrolein U 2.54 50.0 1 02/17/2023 14:45 WG2008116
Acrylonitrile U 0.671 10.0 1 02/17/2023 14:45 WG2008116
Benzene U 0.0941 1.00 1 02/17/2023 14:45 WG2008116
Bromobenzene U 0.118 1.00 1 02/17/2023 14:45 WG2008116
Bromodichloromethane U 0.136 1.00 1 02/17/2023 14:45 WG2008116
Bromoform U 0.129 1.00 1 02/17/2023 14:45 WG2008116
Bromomethane U 0.605 5.00 1 02/17/2023 14:45 WG2008116
n-Butylbenzene U 0.157 1.00 1 02/17/2023 14:45 WG2008116
sec-Butylbenzene U 0.125 1.00 1 02/17/2023 14:45 WG2008116
tert-Butylbenzene U 0.127 1.00 1 02/17/2023 14:45 WG2008116
Carbon tetrachloride U 0.128 1.00 1 02/17/2023 14:45 WG2008116
Chlorobenzene U 0.116 1.00 1 02/17/2023 14:45 WG2008116
Chlorodibromomethane U 0.140 1.00 1 02/17/2023 14:45 WG2008116
Chloroethane U 0.192 5.00 1 02/17/2023 14:45 WG2008116
Chloroform U 0.111 5.00 1 02/17/2023 14:45 WG2008116
Chloromethane U 0.960 2.50 1 02/17/2023 14:45 WG2008116
2-Chlorotoluene U 0.106 1.00 1 02/17/2023 14:45 WG2008116
4-Chlorotoluene U 0.114 1.00 1 02/17/2023 14:45 WG2008116
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/17/2023 14:45 WG2008116
1,2-Dibromoethane U 0.126 1.00 1 02/17/2023 14:45 WG2008116
Dibromomethane U 0.122 1.00 1 02/17/2023 14:45 WG2008116
1,2-Dichlorobenzene U 0.107 1.00 1 02/17/2023 14:45 WG2008116
1,3-Dichlorobenzene U 0.110 1.00 1 02/17/2023 14:45 WG2008116
1,4-Dichlorobenzene U 0.120 1.00 1 02/17/2023 14:45 WG2008116
Dichlorodifluoromethane U 0.374 5.00 1 02/17/2023 14:45 WG2008116
1,1-Dichloroethane U 0.100 1.00 1 02/17/2023 14:45 WG2008116
1,2-Dichloroethane U 0.0819 1.00 1 02/17/2023 14:45 WG2008116
1,1-Dichloroethene U 0.188 1.00 1 02/17/2023 14:45 WG2008116
cis-1,2-Dichloroethene U 0.126 1.00 1 02/17/2023 14:45 WG2008116
trans-1,2-Dichloroethene U 0.149 1.00 1 02/17/2023 14:45 WG2008116
1,2-Dichloropropane U 0.149 1.00 1 02/17/2023 14:45 WG2008116
1,1-Dichloropropene U 0.142 1.00 1 02/17/2023 14:45 WG2008116
1,3-Dichloropropane U 0.110 1.00 1 02/17/2023 14:45 WG2008116
2,2-Dichloropropane U 0.161 1.00 1 02/17/2023 14:45 WG2008116
Di-isopropyl ether U 0.105 1.00 1 02/17/2023 14:45 WG2008116
Ethylbenzene U 0.137 1.00 1 02/17/2023 14:45 WG2008116
Hexachloro-1,3-butadiene U 0.337 1.00 1 02/17/2023 14:45 WG2008116
Isopropylbenzene U 0.105 1.00 1 02/17/2023 14:45 WG2008116
p-Isopropyltoluene U 0.120 1.00 1 02/17/2023 14:45 WG2008116
2-Butanone (MEK)1.64 J 1.19 10.0 1 02/17/2023 14:45 WG2008116
Methylene Chloride 3.03 J 0.430 5.00 1 02/17/2023 14:45 WG2008116
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/17/2023 14:45 WG2008116
Methyl tert-butyl ether U 0.101 1.00 1 02/17/2023 14:45 WG2008116
Naphthalene U 1.00 5.00 1 02/17/2023 14:45 WG2008116
n-Propylbenzene U 0.0993 1.00 1 02/17/2023 14:45 WG2008116
Styrene U 0.118 1.00 1 02/17/2023 14:45 WG2008116
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/17/2023 14:45 WG2008116
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/17/2023 14:45 WG2008116
Tetrachloroethene U 0.300 1.00 1 02/17/2023 14:45 WG2008116
Toluene U 0.278 1.00 1 02/17/2023 14:45 WG2008116
1,2,3-Trichlorobenzene U 0.230 1.00 1 02/17/2023 14:45 WG2008116
1,2,4-Trichlorobenzene U 0.481 1.00 1 02/17/2023 14:45 WG2008116
1,1,1-Trichloroethane U 0.149 1.00 1 02/17/2023 14:45 WG2008116
1,1,2-Trichloroethane U 0.158 1.00 1 02/17/2023 14:45 WG2008116
Trichloroethene U 0.190 1.00 1 02/17/2023 14:45 WG2008116
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 05
L1586419
FB-1
Collected date/time: 02/14/23 11:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 02/17/2023 14:45 WG2008116
1,2,3-Trichloropropane U 0.237 2.50 1 02/17/2023 14:45 WG2008116
1,2,4-Trimethylbenzene U 0.322 1.00 1 02/17/2023 14:45 WG2008116
1,3,5-Trimethylbenzene U 0.104 1.00 1 02/17/2023 14:45 WG2008116
Vinyl chloride U 0.234 1.00 1 02/17/2023 14:45 WG2008116
o-Xylene U 0.174 1.00 1 02/17/2023 14:45 WG2008116
m&p-Xylenes U 0.430 2.00 1 02/17/2023 14:45 WG2008116
(S) Toluene-d8 102 80.0-120 02/17/2023 14:45 WG2008116
(S) 4-Bromofluorobenzene 97.8 77.0-126 02/17/2023 14:45 WG2008116
(S) 1,2-Dichloroethane-d4 107 70.0-130 02/17/2023 14:45 WG2008116
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2008116
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1586419-04,05
Method Blank (MB)
(MB) R3893466-3 02/17/23 13:23
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrolein U 2.54 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2008116
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1586419-04,05
Method Blank (MB)
(MB) R3893466-3 02/17/23 13:23
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Butanone (MEK)U 1.19 10.0
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylene U 0.430 2.00
(S) Toluene-d8 104 80.0-120
(S) 4-Bromofluorobenzene 97.8 77.0-126
(S) 1,2-Dichloroethane-d4 109 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3893466-1 02/17/23 12:00 • (LCSD) R3893466-2 02/17/23 12:21
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acetone 25.0 28.1 30.8 112 123 19.0-160 9.17 27
Acrolein 25.0 23.1 28.7 92.4 115 10.0-160 21.6 26
Acrylonitrile 25.0 26.8 28.9 107 116 55.0-149 7.54 20
Benzene 5.00 5.43 5.68 109 114 70.0-123 4.50 20
Bromobenzene 5.00 5.48 5.68 110 114 73.0-121 3.58 20
Bromodichloromethane 5.00 5.37 5.51 107 110 75.0-120 2.57 20
Bromoform 5.00 4.93 5.07 98.6 101 68.0-132 2.80 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2008116
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1586419-04,05
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3893466-1 02/17/23 12:00 • (LCSD) R3893466-2 02/17/23 12:21
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Bromomethane 5.00 4.41 4.77 88.2 95.4 10.0-160 7.84 25
n-Butylbenzene 5.00 4.98 5.24 99.6 105 73.0-125 5.09 20
sec-Butylbenzene 5.00 5.02 5.20 100 104 75.0-125 3.52 20
tert-Butylbenzene 5.00 5.35 5.51 107 110 76.0-124 2.95 20
Carbon tetrachloride 5.00 5.30 5.68 106 114 68.0-126 6.92 20
Chlorobenzene 5.00 5.24 5.37 105 107 80.0-121 2.45 20
Chlorodibromomethane 5.00 5.15 5.24 103 105 77.0-125 1.73 20
Chloroethane 5.00 5.00 5.24 100 105 47.0-150 4.69 20
Chloroform 5.00 5.56 5.61 111 112 73.0-120 0.895 20
Chloromethane 5.00 4.26 4.35 85.2 87.0 41.0-142 2.09 20
2-Chlorotoluene 5.00 5.90 5.87 118 117 76.0-123 0.510 20
4-Chlorotoluene 5.00 5.39 5.51 108 110 75.0-122 2.20 20
1,2-Dibromo-3-Chloropropane 5.00 4.75 5.06 95.0 101 58.0-134 6.32 20
1,2-Dibromoethane 5.00 4.99 5.10 99.8 102 80.0-122 2.18 20
Dibromomethane 5.00 5.55 5.61 111 112 80.0-120 1.08 20
1,2-Dichlorobenzene 5.00 5.21 5.31 104 106 79.0-121 1.90 20
1,3-Dichlorobenzene 5.00 5.36 5.44 107 109 79.0-120 1.48 20
1,4-Dichlorobenzene 5.00 5.42 5.56 108 111 79.0-120 2.55 20
Dichlorodifluoromethane 5.00 4.69 5.09 93.8 102 51.0-149 8.18 20
1,1-Dichloroethane 5.00 5.46 5.48 109 110 70.0-126 0.366 20
1,2-Dichloroethane 5.00 5.60 5.75 112 115 70.0-128 2.64 20
1,1-Dichloroethene 5.00 5.11 5.29 102 106 71.0-124 3.46 20
cis-1,2-Dichloroethene 5.00 5.31 5.34 106 107 73.0-120 0.563 20
trans-1,2-Dichloroethene 5.00 5.41 5.52 108 110 73.0-120 2.01 20
1,2-Dichloropropane 5.00 5.54 5.67 111 113 77.0-125 2.32 20
1,1-Dichloropropene 5.00 5.08 5.33 102 107 74.0-126 4.80 20
1,3-Dichloropropane 5.00 5.13 5.31 103 106 80.0-120 3.45 20
2,2-Dichloropropane 5.00 5.26 5.97 105 119 58.0-130 12.6 20
Di-isopropyl ether 5.00 5.43 5.56 109 111 58.0-138 2.37 20
Ethylbenzene 5.00 5.10 5.26 102 105 79.0-123 3.09 20
Hexachloro-1,3-butadiene 5.00 4.77 4.79 95.4 95.8 54.0-138 0.418 20
Isopropylbenzene 5.00 5.08 5.16 102 103 76.0-127 1.56 20
p-Isopropyltoluene 5.00 5.10 5.36 102 107 76.0-125 4.97 20
2-Butanone (MEK)25.0 27.6 27.8 110 111 44.0-160 0.722 20
Methylene Chloride 5.00 5.36 5.36 107 107 67.0-120 0.000 20
4-Methyl-2-pentanone (MIBK)25.0 26.6 27.7 106 111 68.0-142 4.05 20
Methyl tert-butyl ether 5.00 5.39 5.50 108 110 68.0-125 2.02 20
Naphthalene 5.00 4.36 4.53 87.2 90.6 54.0-135 3.82 20
n-Propylbenzene 5.00 5.35 5.64 107 113 77.0-124 5.28 20
Styrene 5.00 5.04 5.17 101 103 73.0-130 2.55 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2008116
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1586419-04,05
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3893466-1 02/17/23 12:00 • (LCSD) R3893466-2 02/17/23 12:21
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
1,1,1,2-Tetrachloroethane 5.00 5.22 5.34 104 107 75.0-125 2.27 20
1,1,2,2-Tetrachloroethane 5.00 4.92 5.50 98.4 110 65.0-130 11.1 20
Tetrachloroethene 5.00 4.94 5.23 98.8 105 72.0-132 5.70 20
Toluene 5.00 5.12 5.24 102 105 79.0-120 2.32 20
1,2,3-Trichlorobenzene 5.00 4.54 4.62 90.8 92.4 50.0-138 1.75 20
1,2,4-Trichlorobenzene 5.00 4.69 4.69 93.8 93.8 57.0-137 0.000 20
1,1,1-Trichloroethane 5.00 5.25 5.37 105 107 73.0-124 2.26 20
1,1,2-Trichloroethane 5.00 5.13 5.30 103 106 80.0-120 3.26 20
Trichloroethene 5.00 5.47 5.40 109 108 78.0-124 1.29 20
Trichlorofluoromethane 5.00 5.18 5.52 104 110 59.0-147 6.36 20
1,2,3-Trichloropropane 5.00 5.50 5.55 110 111 73.0-130 0.905 20
1,2,4-Trimethylbenzene 5.00 5.31 5.49 106 110 76.0-121 3.33 20
1,3,5-Trimethylbenzene 5.00 5.48 5.72 110 114 76.0-122 4.29 20
Vinyl chloride 5.00 4.10 4.40 82.0 88.0 67.0-131 7.06 20
o-Xylene 5.00 5.16 5.20 103 104 80.0-122 0.772 20
m&p-Xylene 10.0 10.4 10.6 104 106 80.0-122 1.90 20
(S) Toluene-d8 103 103 80.0-120
(S) 4-Bromofluorobenzene 96.6 95.5 77.0-126
(S) 1,2-Dichloroethane-d4 110 109 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2010790
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1586419-01,02,03
Method Blank (MB)
(MB) R3894088-3 02/23/23 10:42
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Acetone U 11.3 50.0
Acrolein U 2.54 50.0
Acrylonitrile U 0.671 10.0
Benzene U 0.0941 1.00
Bromobenzene U 0.118 1.00
Bromodichloromethane U 0.136 1.00
Bromoform U 0.129 1.00
Bromomethane U 0.605 5.00
n-Butylbenzene U 0.157 1.00
sec-Butylbenzene U 0.125 1.00
tert-Butylbenzene U 0.127 1.00
Carbon tetrachloride U 0.128 1.00
Chlorobenzene U 0.116 1.00
Chlorodibromomethane U 0.140 1.00
Chloroethane U 0.192 5.00
Chloroform U 0.111 5.00
Chloromethane U 0.960 2.50
2-Chlorotoluene U 0.106 1.00
4-Chlorotoluene U 0.114 1.00
1,2-Dibromo-3-Chloropropane U 0.276 5.00
1,2-Dibromoethane U 0.126 1.00
Dibromomethane U 0.122 1.00
1,2-Dichlorobenzene U 0.107 1.00
1,3-Dichlorobenzene U 0.110 1.00
1,4-Dichlorobenzene U 0.120 1.00
Dichlorodifluoromethane U 0.374 5.00
1,1-Dichloroethane U 0.100 1.00
1,2-Dichloroethane U 0.0819 1.00
1,1-Dichloroethene U 0.188 1.00
cis-1,2-Dichloroethene U 0.126 1.00
trans-1,2-Dichloroethene U 0.149 1.00
1,2-Dichloropropane U 0.149 1.00
1,1-Dichloropropene U 0.142 1.00
1,3-Dichloropropane U 0.110 1.00
2,2-Dichloropropane U 0.161 1.00
Di-isopropyl ether U 0.105 1.00
Ethylbenzene U 0.137 1.00
Hexachloro-1,3-butadiene U 0.337 1.00
Isopropylbenzene U 0.105 1.00
p-Isopropyltoluene U 0.120 1.00
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2010790
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1586419-01,02,03
Method Blank (MB)
(MB) R3894088-3 02/23/23 10:42
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
2-Butanone (MEK)U 1.19 10.0
Methylene Chloride U 0.430 5.00
4-Methyl-2-pentanone (MIBK)U 0.478 10.0
Methyl tert-butyl ether U 0.101 1.00
Naphthalene U 1.00 5.00
n-Propylbenzene U 0.0993 1.00
Styrene U 0.118 1.00
1,1,1,2-Tetrachloroethane U 0.147 1.00
1,1,2,2-Tetrachloroethane U 0.133 1.00
Tetrachloroethene U 0.300 1.00
Toluene U 0.278 1.00
1,2,3-Trichlorobenzene U 0.230 1.00
1,2,4-Trichlorobenzene U 0.481 1.00
1,1,1-Trichloroethane U 0.149 1.00
1,1,2-Trichloroethane U 0.158 1.00
Trichloroethene U 0.190 1.00
Trichlorofluoromethane U 0.160 5.00
1,2,3-Trichloropropane U 0.237 2.50
1,2,4-Trimethylbenzene U 0.322 1.00
1,3,5-Trimethylbenzene U 0.104 1.00
Vinyl chloride U 0.234 1.00
o-Xylene U 0.174 1.00
m&p-Xylene U 0.430 2.00
(S) Toluene-d8 114 80.0-120
(S) 4-Bromofluorobenzene 111 77.0-126
(S) 1,2-Dichloroethane-d4 94.4 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3894088-1 02/23/23 08:59 • (LCSD) R3894088-2 02/23/23 09:19
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Acetone 25.0 26.0 28.6 104 114 19.0-160 9.52 27
Acrolein 25.0 27.3 28.6 109 114 10.0-160 4.65 26
Acrylonitrile 25.0 25.0 28.5 100 114 55.0-149 13.1 20
Benzene 5.00 5.00 5.56 100 111 70.0-123 10.6 20
Bromobenzene 5.00 4.91 5.43 98.2 109 73.0-121 10.1 20
Bromodichloromethane 5.00 5.10 5.58 102 112 75.0-120 8.99 20
Bromoform 5.00 5.18 5.37 104 107 68.0-132 3.60 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2010790
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1586419-01,02,03
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3894088-1 02/23/23 08:59 • (LCSD) R3894088-2 02/23/23 09:19
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Bromomethane 5.00 6.32 7.02 126 140 10.0-160 10.5 25
n-Butylbenzene 5.00 5.27 6.02 105 120 73.0-125 13.3 20
sec-Butylbenzene 5.00 5.32 6.37 106 127 75.0-125 J4 18.0 20
tert-Butylbenzene 5.00 5.23 5.77 105 115 76.0-124 9.82 20
Carbon tetrachloride 5.00 5.64 5.98 113 120 68.0-126 5.85 20
Chlorobenzene 5.00 5.27 5.75 105 115 80.0-121 8.71 20
Chlorodibromomethane 5.00 5.24 5.86 105 117 77.0-125 11.2 20
Chloroethane 5.00 5.77 5.78 115 116 47.0-150 0.173 20
Chloroform 5.00 5.37 5.44 107 109 73.0-120 1.30 20
Chloromethane 5.00 5.08 5.54 102 111 41.0-142 8.66 20
2-Chlorotoluene 5.00 5.15 5.97 103 119 76.0-123 14.7 20
4-Chlorotoluene 5.00 5.04 5.82 101 116 75.0-122 14.4 20
1,2-Dibromo-3-Chloropropane 5.00 4.54 5.44 90.8 109 58.0-134 18.0 20
1,2-Dibromoethane 5.00 4.98 5.43 99.6 109 80.0-122 8.65 20
Dibromomethane 5.00 5.15 5.70 103 114 80.0-120 10.1 20
1,2-Dichlorobenzene 5.00 5.48 5.70 110 114 79.0-121 3.94 20
1,3-Dichlorobenzene 5.00 5.44 5.98 109 120 79.0-120 9.46 20
1,4-Dichlorobenzene 5.00 5.10 5.94 102 119 79.0-120 15.2 20
Dichlorodifluoromethane 5.00 5.00 5.73 100 115 51.0-149 13.6 20
1,1-Dichloroethane 5.00 5.03 5.55 101 111 70.0-126 9.83 20
1,2-Dichloroethane 5.00 5.21 5.57 104 111 70.0-128 6.68 20
1,1-Dichloroethene 5.00 4.72 5.19 94.4 104 71.0-124 9.49 20
cis-1,2-Dichloroethene 5.00 5.00 5.52 100 110 73.0-120 9.89 20
trans-1,2-Dichloroethene 5.00 5.34 5.68 107 114 73.0-120 6.17 20
1,2-Dichloropropane 5.00 5.07 5.14 101 103 77.0-125 1.37 20
1,1-Dichloropropene 5.00 5.29 5.76 106 115 74.0-126 8.51 20
1,3-Dichloropropane 5.00 5.10 5.38 102 108 80.0-120 5.34 20
2,2-Dichloropropane 5.00 6.09 6.26 122 125 58.0-130 2.75 20
Di-isopropyl ether 5.00 5.03 5.33 101 107 58.0-138 5.79 20
Ethylbenzene 5.00 5.39 6.09 108 122 79.0-123 12.2 20
Hexachloro-1,3-butadiene 5.00 5.95 5.47 119 109 54.0-138 8.41 20
Isopropylbenzene 5.00 5.29 5.81 106 116 76.0-127 9.37 20
p-Isopropyltoluene 5.00 5.24 6.07 105 121 76.0-125 14.7 20
2-Butanone (MEK)25.0 25.0 26.9 100 108 44.0-160 7.32 20
Methylene Chloride 5.00 5.42 5.55 108 111 67.0-120 2.37 20
4-Methyl-2-pentanone (MIBK)25.0 26.8 30.0 107 120 68.0-142 11.3 20
Methyl tert-butyl ether 5.00 5.07 5.38 101 108 68.0-125 5.93 20
Naphthalene 5.00 4.11 4.86 82.2 97.2 54.0-135 16.7 20
n-Propylbenzene 5.00 5.24 6.12 105 122 77.0-124 15.5 20
Styrene 5.00 5.10 5.59 102 112 73.0-130 9.17 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
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QUALITY CONTROL SUMMARYWG2010790
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1586419-01,02,03
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3894088-1 02/23/23 08:59 • (LCSD) R3894088-2 02/23/23 09:19
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
1,1,1,2-Tetrachloroethane 5.00 4.94 5.63 98.8 113 75.0-125 13.1 20
1,1,2,2-Tetrachloroethane 5.00 4.96 5.85 99.2 117 65.0-130 16.5 20
Tetrachloroethene 5.00 5.49 6.29 110 126 72.0-132 13.6 20
Toluene 5.00 5.01 5.72 100 114 79.0-120 13.2 20
1,2,3-Trichlorobenzene 5.00 4.57 5.99 91.4 120 50.0-138 J3 26.9 20
1,2,4-Trichlorobenzene 5.00 4.72 5.92 94.4 118 57.0-137 J3 22.6 20
1,1,1-Trichloroethane 5.00 5.59 5.83 112 117 73.0-124 4.20 20
1,1,2-Trichloroethane 5.00 5.13 5.46 103 109 80.0-120 6.23 20
Trichloroethene 5.00 5.45 5.40 109 108 78.0-124 0.922 20
Trichlorofluoromethane 5.00 5.44 5.85 109 117 59.0-147 7.26 20
1,2,3-Trichloropropane 5.00 5.34 5.60 107 112 73.0-130 4.75 20
1,2,4-Trimethylbenzene 5.00 5.32 5.81 106 116 76.0-121 8.81 20
1,3,5-Trimethylbenzene 5.00 5.26 6.06 105 121 76.0-122 14.1 20
Vinyl chloride 5.00 5.32 5.96 106 119 67.0-131 11.3 20
o-Xylene 5.00 5.24 5.94 105 119 80.0-122 12.5 20
m&p-Xylene 10.0 10.7 12.0 107 120 80.0-122 11.5 20
(S) Toluene-d8 108 109 80.0-120
(S) 4-Bromofluorobenzene 106 108 77.0-126
(S) 1,2-Dichloroethane-d4 106 103 70.0-130
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GLOSSARY OF TERMS
Guide to Reading and Understanding Your Laboratory Report
The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not
intended as a comprehensive explanation, and if you have additional questions please contact your project representative.
Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name,
Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and
Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received.
Abbreviations and Definitions
MDL Method Detection Limit.
RDL Reported Detection Limit.
Rec.Recovery.
RPD Relative Percent Difference.
SDG Sample Delivery Group.
(S)
Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and
Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be
detected in all environmental media.
U Not detected at the Reporting Limit (or MDL where applicable).
Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes
reported.
Dilution
If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the
standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the
laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the
result reported has already been corrected for this factor.
Limits
These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal
for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or
duplicated within these ranges.
Qualifier
This column provides a letter and/or number designation that corresponds to additional information concerning the result
reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and
potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable.
Result
The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was
no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL”
(Below Detectable Levels). The information in the results column should always be accompanied by either an MDL
(Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect
or report for this analyte.
Uncertainty
(Radiochemistry)Confidence level of 2 sigma.
Case Narrative (Cn)
A brief discussion about the included sample results, including a discussion of any non-conformances to protocol
observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will
be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report.
Quality Control
Summary (Qc)
This section of the report includes the results of the laboratory quality control analyses required by procedure or
analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not
being performed on your samples typically, but on laboratory generated material.
Sample Chain of
Custody (Sc)
This is the document created in the field when your samples were initially collected. This is used to verify the time and
date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This
chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the
samples from the time of collection until delivery to the laboratory for analysis.
Sample Results (Sr)
This section of your report will provide the results of all testing performed on your samples. These results are provided
by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for
each sample will provide the name and method number for the analysis reported.
Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and
times of preparation and/or analysis.
Qualifier Description
J The identification of the analyte is acceptable; the reported value is an estimate.
J3 The associated batch QC was outside the established quality control range for precision.
J4 The associated batch QC was outside the established quality control range for accuracy.
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
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ACCREDITATIONS & LOCATIONS

¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable
* Not all certifications held by the laboratory are applicable to the results reported in the attached report.
* Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical.
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