WS-6409_24177_CA_MRP_20230802

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

August 2, 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 27699-1646

Subject: Groundwater Monitoring Report
Farrar’s Store
397 Farrar Store Road
Stokesdale, Rockingham County, North Carolina
NCDEQ Incident No. 24177

Dear Ms. Blalock:

ATC Associates of North Carolina, P.C. (ATC) is submitting the enclosed Groundwater Monitoring Report for
the Farrar’s Store site. The report presents investigative procedures, field activities, and laboratory analytical
results for a groundwater sampling event conducted in June 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.
Project Scientist Senior Project Manager
Direct Line: 919-573-1198 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 27699-1646

GROUNDWATER MONITORING REPORT
Farrar’s Store
397 Farrar Store Road
Stokesdale, Rockingham County, North Carolina
Incident #24177

ATC Project No. STL2417701

Prepared by:

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

Nicholas Kramer
Project Scientist
Direct Line: 919-573-1198
Email: [e-mail]

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

August 2, 2023

Farrar’s Store
August 2, 2023
Page i

ATC Project No. STL2417701 NCDEQ State Lead Program
Table of Contents
1.0 SITE IDENTIFICATION .......................................................................................................................... 1
2.0 EXECUTIVE SUMMARY ........................................................................................................................ 2
3.0 SITE HISTORY AND CHARACTERIZATION ...................................................................................... 2
3.1 SITE CHARACTERIZATION .................................................................................................................................... 2
3.2 SITE HISTORY ................................................................................................................................................... 3
4.0 GROUNDWATER ASSESSMENT ACTIVITIES .................................................................................. 5
4.1 GROUNDWATER LEVELS ............................................................................................................................................. 5
4.2 GROUNDWATER ANALYTICAL RESULTS .................................................................................................................. 5
4.3 WATER SUPPLY WELL SAMPLING ......................................................................................................................... 6
5.0 CONCLUSIONS AND RECOMMENDATIONS .................................................................................... 6

TABLES:
Table 1 – Water Supply Well Information
Table 2 – Well Construction and Groundwater Elevation Data
Table 3 – Field Parameters
Table 4 – Groundwater Analytical Data
Table 5 – Historical Groundwater Analytical Data
Table 6 – Historical Water Supply Well Analytical Data

FIGURES:
Figure 1 – Topographic Map
Figure 2 – Site Map
Figure 3 – Potential Receptor Map
Figure 4 – Groundwater Elevation Contour Map
Figure 5 – Dissolved Benzene Isoconcentration Map
Figure 6 – Dissolved 1,2-Dibromoethane Isoconcentration Map
Figure 7 – Additional Chemicals of Concern in Groundwater

APPENDICES:
Appendix A – Conceptual Site Model
Appendix B – Site Photographs
Appendix C – Field Notes
Appendix D – GSI Mann-Kendall Toolkit
Appendix E – Laboratory Analytical Results

Farrar’s Store
August 2, 2023
Page 2 of 6

ATC Project No. STL2417701 NCDEQ State Lead Program
2.0 EXECUTIVE SUMMARY

ATC Associates of North Carolina, P.C. (ATC) has completed a Groundwater Monitoring Report for the
Farrar’s Store site. This report documents groundwater assessment activities conducted at the site in June
2023. The activities were performed based on the May 12, 2023, Task Authorization (TA-01) by the Trust
Fund Branch of the Underground Storage Tank (UST) Section, Division of Waste Management (DWM),
North Carolina Department of Environmental Quality (NCDEQ). The work is being performed as part of
State Lead Contract #N70522-B between NCDEQ and ATC.

The Farrar’s Store site is located at 397 Farrar Store Road in Stokesdale, Rockingham County, North
Carolina. The site is currently developed with one single-story building that is currently vacant. Five
monitoring wells (MW-1, MW-2, MW-3, MW-4, and MW-1D) are associated with the site. The UST system
formerly located on the property consisted of two 575-gallon gasoline USTs (UST-1 and UST-2) and one
300-gallon gasoline UST (UST-3). The two 575-gallon gasoline USTs were installed in 1926 and removed
on September 22, 2004 and the one 300-gallon gasoline UST was installed in 1926 and removed on April
7, 2015. There are twenty-one water supply wells within 1,000 feet of the site. Twenty water supply wells
are active, and one well is inactive. Sixteen of the active water supply wells (WSW-2(new), WSW-3, WSW-
5, WSW-6, WSW-8 through WSW-18, and WSW-21) do not have an active municipal account and are
assumed potable wells.

On June 12, 2023, ATC mobilized to the site to collect groundwater samples from MW-1, MW-2, MW-3,
MW-4, and MW-1D. Based on the data, groundwater flows to the east across the site. Light non-aqueous
phase liquid (LNAPL) was not detected. 1,2-Dibromoethane was detected above the Gross Contaminant
Level (GCL) in MW-3. Multiple petroleum constituents were detected above the 15A NCAC 02L. 0202
Groundwater Quality Standards (2L Standards) in monitoring wells MW-1, MW-2, MW-3, and MW-4. ATC
also collected samples from WSW-2 and WSW-3 which are located within 500 feet of the site and are
considered to be crossgradient of the site. WSW-2 and WSW-3 exhibited concentrations of 1,2-
dichloroethane below the applicable 2L Standard. Tetrachloroethylene was also detected in WSW-3 at a
concentration exceeding the 2L Standard which is comparable to historical data.

Based on the groundwater analytical results, the extent of the petroleum groundwater impact is horizontally
delineated to the south. Additionally, although well MW-1D did not indicate concentrations above 2L
Standards, the well is located upgradient of the most impacted well on the property, MW-3. Therefore, the
vertical plume is not adequately delineated. Additional groundwater monitoring is required to determine if
the vertical extent of the groundwater impacts have been adequately delineated. ATC recommends
conducting a comprehensive groundwater sampling event including the sampling of select potable wells
within 500 feet of the site in December 2023 to confirm groundwater concentrations, particularly for MW-3
and MW-4. Following the December 2023 sampling event, ATC recommends installing additional
monitoring wells in order to adequately delineate the groundwater contaminant plume.

3.0 SITE HISTORY AND CHARACTERIZATION

3.1 SITE CHARACTERIZATION

The Farrar’s Store site is located at 397 Farrar Store Road in Stokesdale, North Carolina. The site is
currently developed with a single-story building, which is vacant and utilized for storage. Five monitoring
wells (MW-1 through MW-4 and MW-1D) are associated with the site. The UST system formerly located on
the property consisted of two 575-gallon gasoline USTs and one 300-gallon gasoline UST. The two 575-
gallon gasoline USTs were installed in 1926 and removed on September 22, 2004, and the one 300-gallon
gasoline UST was installed in 1926 and removed on April 7, 2015.

The site is bound to the north by NC Highway 65, to the southwest and southeast by Farrar Store Road.
Municipal water is available to the site and vicinity. There are twenty-one water supply wells within 1,000
feet of the site. Twenty water supply wells are active, and one well is inactive. Sixteen of the active water
supply wells (WSW-2(new), WSW-3, WSW-5, WSW-6, WSW-8 through WSW-18, and WSW-21) do not
have an active municipal account and are assumed potable wells. Water supply well ownership information
Farrar’s Store
August 2, 2023
Page 3 of 6

ATC Project No. STL2417701 NCDEQ State Lead Program
is included in Table 1. A site topographic map is included as Figure 1 and a site map depicting monitoring
well locations and other pertinent site features is included as Figure 2. A map showing water supply well
locations is included as Figure 3. A conceptual site model is included as Appendix A. Site photographs
are included as Appendix B.

3.2 SITE HISTORY

On April 3, 2002, the DWM UST section received a Health Risk Evaluation report and lab result of a water
supply well sample, SW-1(old), collected by the Rockingham County Health Department. On the same day,
bottled water service was requested for the Farrar’s residence.

On November 18, 2002 the DWM UST section sent a Notice of Regulatory Requirements to responsible
party.

In May 2003, a carbon filter was installed at the Farrar residence on water supply well WSW-1(old).

The UST Closure Report submitted by Pyramid Environmental & Engineering, P.C. (Pyramid) on October
29, 2004, documented the removal of two 575-gallon gasoline USTs (UST-1 and UST-2) in September
2004. Observations made during the UST removal suggested that there had been a release from the UST
system. Based on these observations, 71.66 tons of petroleum contaminated soil was excavated and taken
off-site for disposal. Results of the soil sampling, around UST-2, indicated exceedances to the Maximum
Soil Contamination Concentrations (MSCCs) for multiple volatile organic compounds (VOCs), volatile
petroleum hydrocarbons (VPHs), and extractable petroleum hydrocarbons (EPHs).

On November 17, 2006, Pyramid performed a Limited Site Assessment (LSA) at the site property. A direct-
push soil boring was installed in the suspected area of an underground anomaly identified with a metal
detector during the UST closure activities in 2004. Approximately six inches below ground surface (bgs) a
metal tank was discovered. Pyramid estimated that UST-3 has a capacity of 300-gallons. Pyramid also
installed one Type II monitoring well (MW-1) in the source area. A soil sample was collected from the MW-
1 boring at 18-20 feet bgs. Results of the soil sampling indicated exceedances to the MSCCs for multiple
VOCs and VPHs.

On February 21 through 23, 2011, Pyramid supervised a geophysical survey utilizing electromagnetic
resistivity and ground-penetrating radar to determine the exact location of UST-3. Pyramid also conducted
an updated receptor survey, supervised the installation of 10 soil borings (B1 through B10), sampled
monitoring well MW-1, and sampled water supply wells WSW-1(new), WSW-1(old), WSW-2(new), WSW-
2(old), WSW-3, WSW-5, WSW-6, and WSW-7. Results of the groundwater analytical data indicated
exceedances to the 2L standards in MW-1 for benzene and 1,2-dibromoethane. The concentration of 1,2-
dibromoethane also exceeded its representative GCL. Results of the soil sampling indicated contamination
that exceeds the Residential MSCCs below the former 575-gallon USTs that extends to the groundwater
table. Results of the water supply well sampling indicated exceedances to the 2L Standards in WSW-1(new)
for benzene, 1,2-dichloroethane, 1,2-dichloropropane, and naphthalene. Water supply wells WSW-1(new)
and WSW-3 also exceeded the 2L Standards for tetrachloroethylene.

On October 28, 2011, Pyramid collected samples from the groundwater monitoring well MW-1 and water
supply wells WSW-1(new), WSW-1(old), WSW-2(new), WSW-2(old), WSW-3, WSW-5, WSW-6, and
WSW-7. Results of the groundwater analytical data indicated exceedances to the 2L Standards in MW-1
for benzene, toluene, total xylenes, 1,2-dibromethane, and1,2-dichloroethane. Results of the water supply
well sampling indicated exceedances to the 2L Standards in WSW-1 (new) for benzene, 1,2-dichloroethane,
1,2-dichloropropane, and naphthalene. Water supply well WSW-3 also exceeded the 2L Standards for
tetrachloroethylene.

On April 7, 2015, ECS Carolinas, LLP (ECS) mobilized to the site and removed a 500-gallon UST (UST-3).
ECS oversaw the removal contaminated soil underneath UST-3 and in the former UST-2 area. Soil was
then backfilled on August 4, 2015 with 70.64 tons of clean imported soil. A report documenting closure
Farrar’s Store
August 2, 2023
Page 4 of 6

ATC Project No. STL2417701 NCDEQ State Lead Program
activities was not available for ATC’s review; therefore, ATC cannot determine the exact amount of soil
removed during the April 2015 activities. The dates for the UST removal and clean soil tonnage were
derived from invoices from 2015.

On May 2, 2018, ECS collected a groundwater sample from monitoring well MW-1 and from water supply
wells WSW-1 (old), WSW-1 (new), and WSW-3. Results of the groundwater analytical data indicated
exceedances to the 2L Standards for benzene, total xylenes, naphthalene, and 1,2-dibromoethane for MW-
1. Results of the water supply well samples indicated an exceedance to the 2L Standards in WSW-3 for
tetrachloroethylene.

On January 2, 2019, ECS installed Enviro-Bac in monitoring well MW-1. On January 31, 2019 and March
11, 2019, ECS mobilized to the site to collect a groundwater sample from MW-1. ECS also collected
samples from water supply wells WSW-1 (old), WSW-1 (new), and WSW-3 on March 11, 2019. Monitoring
well MW-1 indicated exceedances to the 2L Standards for 1,2-dibromoethane during both sampling events.
Additional constituents were detected above the laboratory reporting limit, but below their representative
2L Standards. Results of the water supply well samples indicated an exceedance to the 2L Standards in
WSW-3 for tetrachloroethylene.

On November 14, 2019, ECS collected a groundwater sample from monitoring well MW-1. Results of the
groundwater analytical data indicated exceedances of the 2L Standards for benzene, total xylenes, methyl
butyl ketone, naphthalene, and 1,2-dibromoethane.

On January 2, 2020, ECS collected a groundwater sample from monitoring well MW-1. Results of the
groundwater analytical data indicated exceedances of the 2L Standards for benzene, total xylenes, methyl
butyl ketone, naphthalene, 1,2-dibromoethane, and 1,1,2-trichloroethane.

On March 29 and 31, 2021, SAEDACCO, Inc. mobilized to the site to abandon water supply wells WSW-1
(old) and WSW-1 (new), located approximately 240 feet from the site property. The property associated
with both wells was connected to municipal water prior to the abandonment.

On June 24, 2021, ATC conducted a groundwater sampling event on monitoring well MW-1. The laboratory
analytical results indicated benzene, total xylenes, naphthalene, 1,2-dibromoethane, 1,2-dichloroethane,
and 1,2,4-trimethylbenzene exceeded their respective 2L Standards.

On November 12, 2021, ATC performed visual reconnaissance for an updated receptor survey. Based on
ATC’s findings, there are twenty-one water supply wells located within 1,000 feet of the site. Sixteen of
those wells appear to be used for drinking purposes, four are used for irrigation, and one is inactive. Public
water is available within 1,000 feet of the site.

On January 3, 2023, ATC submitted a Groundwater Monitoring Report documenting the installation of three
Type II monitoring wells (MW-2, MW-3, and MW-4) and one Type III monitoring well (MW-1D) to delineate
the groundwater impacts. On October 19, 2022, ATC mobilized to the site to collect groundwater samples
from MW-1 through MW-4 and MW-1D. Based on the data, groundwater flows to the southeast across the
site. LNAPL was not detected. 1,2-Dibromoethane was detected above the GCLs in MW-4. Multiple
constituents were detected above 2L Standards in monitoring wells MW-1, MW-1D, MW-2, MW-3, and MW-
4. Based on the groundwater analytical results, it was determined that the extent of the petroleum
groundwater impact was delineated to the southwest and the vertical extent of the groundwater impacts
were not delineated.

Farrar’s Store
August 2, 2023
Page 5 of 6

ATC Project No. STL2417701 NCDEQ State Lead Program
4.0 GROUNDWATER ASSESSMENT ACTIVITIES

4.1 GROUNDWATER LEVELS

On June 12, 2023, ATC mobilized to the site to collect groundwater samples from all existing monitoring
wells (MW-1, MW-2, MW-3, MW-4, and MW-1D) and water supply wells WSW-2 and WSW-3. LNAPL was
not detected during the event. Depth to water in the wells ranged from 36.11 feet bgs in MW-2 to 58.25 feet
bgs in MW-1D. Based on the June 2023 groundwater gauging event, groundwater flows to the east across
the site. Monitoring well construction details and groundwater elevation data are summarized in Table 2.
Field parameter data, including temperature, dissolved oxygen, conductivity, pH, and oxygen reduction
potential, were recorded during the sampling event and are included in Table 3. A groundwater elevation
contour map is included as Figure 4. Photographs of the monitoring well locations are included in Appendix
B. Field notes from the sampling event are included in Appendix C.

4.2 GROUNDWATER ANALYTICAL RESULTS

The groundwater samples were placed in laboratory-supplied containers, entered into chain-of-custody
control, placed on ice, and shipped to Pace Analytical in Mount Juliet, Tennessee for analysis by Standard
Method 6200B. Field notes from the sampling event are included in Appendix C.

The laboratory analytical results exhibited numerous compounds above 2L Standards:
 Benzene: MW-1, MW-3
 Total Xylenes: MW-1, MW-3
 Naphthalene: MW-1, MW-3
 Bromodichloromethane: MW-3
 1,2-Dibromoethane: MW-1, MW-3, MW-4
 1,2-Dichloroethane: MW-1
 Tetrachloroethylene: MW-2
 1,2,4-Trimethylbenzene: MW-3

1,2-Dibromoethane was detected at a concentration exceeding the applicable GCL. No additional
compounds were detected above the respective GCLs. A summary of the laboratory analytical results from
the June 2023 event are included in Table 4. Historical groundwater analytical results are included in Table
5. An isoconcentration contour map for dissolved benzene and 1,2-dibromoethane are included as Figure
5 and Figure 6, respectively. A map depicting additional chemicals of concern in groundwater is included
as Figure 7.

ATC reviewed groundwater concentrations trends for key compounds in wells MW-1 using a GSI Mann-
Kendall Toolkit. Based on the results, naphthalene and 1,2,4-trimethylbenzene concentrations indicate an
increasing trend. No statistical trends were identified for benzene, total xylenes, 1,2-dibromoethane, and
1,2-dichloroethane. The GSI Mann-Kendall Toolkit for MW-1 is included as Appendix D.

It should be noted that based on the recent groundwater analytical data, it appears samples MW-3 and
MW-4 were inadvertently switched during the October 2022 sampling event. Due to the downgradient
location of MW-3 compared to the upgradient location of MW-4, and both well locations in respect to the
former UST system location, ATC believes it is more probable for well MW-3 to be more highly impacted.

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. The samples were analyzed within the correct
holding times. A field blank sample was also analyzed for the site, which indicated detections of 2-butanone
and methylene chloride at estimated concentrations. Methylene chloride is a common laboratory
contaminant and is likely associated with the laboratory. 2-Butanone is commonly associated with
petroleum sites and is potentially the result of cross-contamination during field sampling activities. However,
the concentration was flagged with a “J” qualifier denoting that the concentration value is an estimate. The
Farrar’s Store
August 2, 2023
Page 6 of 6

ATC Project No. STL2417701 NCDEQ State Lead Program
chain of custody was properly completed by all parties. The laboratory QC report shows an internal blank
was analyzed for each method that was used for the original samples. The laboratory fortified blank and
laboratory control sample data results were also provided for each analytical method. Refer to the laboratory
report in Appendix E 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 WELL SAMPLING

On June 12, 2023, ATC collected samples from WSW-2 and WSW-3 which are located within 500 feet of
the site and are considered to be crossgradient of the site. Water supply well information is included in
Table 1. Water supply well locations are shown on Figure 3. The samples were collected in laboratory-
supplied containers and shipped to Pace Analytical in Mount Juliet, Tennessee for analysis of volatile
organic compounds by Method 6200B.

The water supply well analytical results were compared to the 2L Standards and GCLs. WSW-2 and WSW-
3 exhibited concentrations of 1,2-dichloroethane below the applicable 2L Standard. Tetrachloroethylene
was also detected in WSW-3 at a concentration exceeding the 2L Standard which is comparable to
historical data. No additional compounds were detected which exceeded the applicable laboratory detection
limits. Water supply analytical results are included as Table 6. Field notes from the sampling event are
included as Appendix B.

5.0 CONCLUSIONS AND RECOMMENDATIONS

On behalf of the Trust Fund Branch of the UST Section, ATC has completed a Groundwater Monitoring
Report documenting the June 2023 groundwater sampling activities at the Farrar’s Store site located at 397
Farrar Store Road in Stokesdale, Rockingham County, North Carolina.

On June 12, 2023, ATC mobilized to the site to collect groundwater samples from MW-1, MW-2, MW-3,
MW-4, and MW-1D. Based on the data, groundwater flows to the east across the site. LNAPL was not
detected. 1,2-Dibromoethane was detected above the GCL in MW-3. Multiple petroleum constituents were
detected above 2L Standards in monitoring wells MW-1, MW-2, MW-3, and MW-4. Based on the
groundwater analytical results, the extent of the petroleum groundwater impact is horizontally delineated to
the south. Although well MW-1D did not indicate concentrations above 2L Standards, the well is located
upgradient of the most impacted well on the property, MW-3. Therefore, the vertical plume is not adequately
delineated. Additional groundwater monitoring is required to determine if the vertical extent of the
groundwater impacts have adequately delineated.

ATC recommends conducting a comprehensive groundwater sampling event including the sampling of
select potable wells within 500 feet of the site in December 2023 to confirm groundwater concentrations,
particularly for MW-3 and MW-4. Following the December 2023 sampling event, ATC recommends the
installation of additional monitoring wells in order to adequately horizontally delineate the groundwater
contaminant plume.

Farrar’s Store

ATC Project No. STL2417701 NCDEQ State Lead Program
TABLES
TABLE 1
WATER SUPPLY WELL INFORMATION
FARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #24177
Water Supply Well Property Owner(s)Property Address Owner's Address Distance from
Source (feet)Usage Additional
Information
WSW-1 (old)240 E Abandoned --
WSW-1 (new)200 SE Abandoned --
WSW-2 (old)200 SW Inactive --
WSW-2 (new)280 SW Potable Depth: 365 ft
Year Installed: 1985
WSW-3 Susan Hyatt Barham
[phone]
358 Farrar Store Road
Stokesdale, NC 27357
358 Farrar Store Road
Stokesdale, NC 27357 445 SW Potable Depth: 383 ft
Year Installed: 2000
WSW-4 Glennie Goins 9120 NC Highway 65
Stokesdale, NC 27357
1285 Webb Loop
Madison, NC 27025 300 E Irrigation --
WSW-5 Robert Yates, Sr.9157 NC Highway 65
Stokesdale, NC 27357
8885 Belews Creek Rd
Belews Creek, NC
27009
180 N Potable --
WSW-6 Ross McSurdy 131 Classic Lane
Stokesdale, NC 27357
131 Classic Lane
Stokesdale, NC 27357 415 N Potable --
WSW-7 Tommy & Vanessa
Barham
9123 NC Highway 65
Stokesdale, NC 27357
9123 NC Highway 65
Stokesdale, NC 27357 300 NE Irrigation --
WSW-8 Terry & Kathelene
Shelton
110 Classic Lane
Stokesdale, NC 27357
736 Lemons Road
Stokesdale, NC 27357 390 NW Potable --
WSW-9 Rosemarie Berger 120 Classic Lane
Stokesdale, NC 27357
701 Fairidge Drive
Jamestown, NC 27282 440 NW Potable --
WSW-10 Albert & Barbara Hicks 140 Classic Lane
Stokesdale, NC 27357
140 Classic Lane
Stokesdale, NC 27357 560 NW Potable --
WSW-11 John & Mary Johnson 160 Classic Lane
Stokesdale, NC 27357
160 Classic Lane
Stokesdale, NC 27357 750 NW Potable --
WSW-12 Charles & Rhonda Ray
[phone]
178 Classic Lane
Stokesdale, NC 27357
178 Classic Lane
Stokesdale, NC 27357 880 NW Potable Depth: Unknown
Year Installed: 1991
Andrew & Julie Oakley 9136 NC Highway 65
Stokesdale, NC 27357
250 Harrison
Crossroad Loop
Reidsville, NC 27320
Bobbie R. Barham
[phone]
378 Farrar Store Road
Stokesdale, NC 27357
358 Farrar Store Road
Stokesdale, NC 27357
Page 1 of 2
TABLE 1
WATER SUPPLY WELL INFORMATION
FARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #24177
Water Supply Well Property Owner(s)Property Address Owner's Address Distance from
Source (feet)Usage Additional
Information
WSW-13 Richard & Corinne
Cunningham
175 Classic Lane
Stokesdale, NC 27357
175 Classic Lane
Stokesdale, NC 27357 900 N Potable --
WSW-14 William & Deborah
Burgess
160 Red Oak Dr.
Stokesdale, NC 27357
160 Red Oak Dr.
Stokesdale, NC 27357 750 NW Potable --
WSW-15 Robert & Joanne
Burgess
140 Red Oak Dr.
Stokesdale, NC 27357
140 Red Oak Dr.
Stokesdale, NC 27357 700 NW Potable --
WSW-16 James & Rebecca
Wilson
9065 NC Highway 65
Stokesdale, NC 27357
9065 NC Highway 65
Stokesdale, NC 27357 815 E Potable --
WSW-17 G W Moore, Jr 9104 NC Highway 65
Stokesdale, NC 27357
9104 NC Highway 65
Stokesdale, NC 27357 600 E Potable --
WSW-18 Sample & Edna
Anderson
345 Farrar Store Rd
Stokesdale, NC 27357
345 Farrar Store Rd
Stokesdale, NC 27357 530 S Potable --
WSW-19 Lea & Garrett Phillips 348 Farrar Store Rd
Stokedale, NC 27357
348 Farrar Store Rd
Stokesdale, NC 27357 600 S Irrigation --
WSW-20 Robert Yates, Sr.9220 NC Highway 65
Stokesdale, NC 27357
8885 Belews Creek Rd
Belews Creek, NC
27009
890 SW Irrigation --
WSW-21 Lori and Bradford Vernon 9077 NC Highway 65
Stokesdale, NC 27357
9077 NC Highway 65
Stokesdale, NC 27357 650 E Potable --
Notes:
1. Property owner information obtained from Rockingham County GIS website (https://www.webgis.net/nc/Rockingham/).
2. Water supply well and municipal water information obtained Rockingham County Water Deparment, Town of Stokesdale Water Department, Aqua,
and visual reconnaissance.
Page 2 of 2
TABLE 2
WELL CONSTRUCTION AND
GROUNDWATER ELEVATION DATA
FARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #24177
Well ID Date
Installed
Well
Diameter
(inches)
Total
Depth
(feet)
Screen
Interval
(feet)
TOC
Elevation
(Feet)
Date
Measured
Depth to
Groundwater
(feet)
Depth to
LNAPL (feet)
LNAPL
Thickness
(feet)
Groundwater
Elevation (feet)
11/14/2019 35.93 ----64.07
1/2/2020 36.31 ----63.69
6/24/2021 34.07 ----65.93
10/19/2022 37.21 ----62.79
6/12/2023 36.68 ----63.32
10/19/2022 36.82 ----62.53
6/12/2023 36.11 ----63.24
10/19/2022 37.25 ----62.55
6/12/2023 36.73 ----63.07
10/19/2022 37.16 ----62.85
6/12/2023 36.41 ----63.60
10/19/2022 79.55 ----20.28
6/12/2023 58.25 ----41.58
Notes:
1. TOC = Top of casing.
2. -- = LNAPL not detected.
3. Formula for determining groundwater elevation when LNAPL has been detected: TOC Elevation - Depth to Groundwater + [0.8581*LNAPL Thickness].
4. Well construction information was obtained from previous consultants reports.
5. Top-of-casing elevation has not been surveyed.
6. LNAPL = Light non-aqueous phase liquid.
100.01
MW-1D 10/14/2022 2 80 70-80 99.83
MW-4 10/14/2022 2 45 30-45
99.35
MW-3 10/14/2022 2 45 30-45 99.80
MW-2 10/14/2022 2 44 29-44
100.00MW-1 11/17/2006 2 55 25-55
Page 1 of 1
TABLE 3
FIELD PARAMETERS
FARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #24177
11/14/2019 17 5.12 NM 148 5.40 NM
1/20/2020 NM NM NM NM NM NM
6/24/2021 20.73 0.74 307 283 6.39 92.9
10/19/2022 15.7 2.62 941 773 5.99 172.8
6/12/2023 22.78 2.16 393 377 5.22 63.7
10/19/2022 16.3 4.74 276.3 230.3 5.99 181.2
6/12/2023 22.44 2.04 293 279 5.50 46.4
10/19/2022 15.8 2.00 102.9 84.7 5.77 167.9
6/12/2023 22.01 1.75 304 287 5.91 30.3
10/19/2022 15.1 4.65 281.6 227.8 6.14 164.0
6/12/2023 22.52 2.31 128 122 5.23 48.7
10/19/2022
6/12/2023 22.19 1.41 1,855 1,756 11.51 -136.9
Notes:
1. mg/L = Milligrams per Liter.
2. °C = Degrees Celcius.
3. µS/cm = MicroSiemens per Centimeter.
4. mV = Millivolts.
5. SU = Standard Units.
6. NM = Not measured.
Conductivity
(µS/cm)
Oxygen
Reduction
Potential
(mV)
pH
(SU)WELL I.D.DATE
SAMPLED
Temperature
(°C)
Dissolved
Oxygen
(µg/L)
Specific
Conductivity
(µS/cm)
MW-1
MW-2
MW-3
MW-4
MW-1D Not enough water for YSI reading.
TABLE 4
GROUNDWATER ANALYTICAL DATA
FARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #24177
Benzene Toluene Ethylbenzene Total Xylenes Naphthalene Acetone Bromodichloromethane sec-Butylbenzene Chloroethane Chloroform 1,2-Dibromoethane 1,2-Dichloroethane Isopropylbenzene p-Isopropyltoluene 2-Butanone (MEK) Methyl isobutyl ketone n-Propylbenzene Tetrachloroethylene 1,2,4-Trimethylbenzene 1,3,5-TrimethylbenzeneMW-1 06/12/2023 1.01 J 135 109 622 10.7 14.3 J <1.00 1.16 <5.00 <5.00 3.88 0.479 J 5.36 <1.00 <10.0 4.64 J 22.3 0.548 J 138 53.3
MW-2 06/12/2023 0.255 J <1.00 0.167 J 11.504 J <5.00 <50.0 <1.00 <1.00 <5.00 <5.00 <1.00 <1.00 0.141 J <1.00 <10.0 <10.0 0.115 J 3.16 0.635 J 2.59
MW-3 06/12/2023 413 <5.00 442 3,420 57.7 74.7 J 1.03 J <5.00 <25.0 <25.0 52.8 <5.00 12.7 5.15 55.5 74.8 53.7 <5.00 527 168
MW-4 06/12/2023 0.125 J 13.9 12.5 88.3 <5.00 <50.0 <1.00 <1.00 <5.00 <5.00 1.25 0.225 J 0.726 J 0.357 J <10.0 <10.0 2.23 0.385 J 11.2 8.90
MW-1D 06/12/2023 0.155 J <1.00 0.321 J 2.288 J <5.00 2,600 <1.00 <1.00 0.215 J 0.206 J <1.00 <1.00 0.125 J <1.00 7.66 J 0.872 J 0.193 J <1.00 0.663 J 1.24
1 600 600 500 6 6,000 0.6 70 NE 70 0.02 0.4 70 25 4,000 100 70 0.7 400 400
5,000 260,000 80,000 50,000 6,000 6,000,000 NE 8,800 NE 70,000 50 400 30,500 11,700 4,000,000 100,000 26,100 700 28,500 24,100
Notes:
1. "<" or ND = Not Detected at or above the reporting limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb).
5. GCL = Gross Contamination Level.
6. J = Reported value is an estimate.
7. NE = Not established.
4. Concentrations in Italics print equal or exceed the GCLs.
GCL
Method 6200B
3. Concentrations in BOLD print equal or exceed the NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).
Monitoring
Well Date
2L Standard
Page 1 of 1
TABLE 5
HISTORICAL GROUNDWATER ANALYTICAL DATA
FARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #24177
Benzene Toluene Ethylbenzene Total Xylenes Naphthalene Acrolein Bromodichloromethane 1,2-Dibromo-3-Chloropropane 1,2-Dibromoethane 1,2-Dichloroethane 1,2-Dichloropropane 2-Hexanone Methyl Isobutly Ketone n-Propylbenzene Tetrachloroethylene 1,1,2-Trichloroethane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene5/2/2018 3.5 220 99 730 6.5 NR NR NR 7.4 0.70 NR 7.7 3.9 19 <0.5 <0.5 97 48
1/2/2019
1/31/2019 <0.5 17.3 10.7 114.8 2.9 NA <0.50 <1.0 1.3 <0.5 <0.50 NA NA <0.5 <0.5 <0.5 55 24.6
3/11/2019 <0.5 15.5 6.5 90.4 2.6 NA <0.50 <1.0 <0.2 <0.5 <0.50 NA NA <0.5 <0.5 <0.5 34.8 16.1
11/14/2019 2.8 72 90 520 30 NA <2.0 NA 16 <4.0 <2.0 98 48 10 <2.0 <2.0 110 62
1/2/2020 4.4 280 200 980 30 NA <1.0 NA 23 3.0 <1.0 100 68 29 0.64J 1.3 250 130
6/24/2021 7.25 J 356 333 3,080 59.5 J <2,500 <50.0 <250 44.0 J 7.30 J <50.0 NA 49.9 J 40.9 J <50.0 <50.0 548 205
10/19/2022 1.46 178 308 2,029 79.8 4.91 J <1.00 <5.00 12.6 1.74 0.590 J NA 31.9 51.2 0.633 J <1.00 510 222
6/12/2023 1.01 J 135 109 622 10.7 <50.0 <1.00 <5.00 3.88 0.479 J <1.00 NA 4.64 J 22.3 0.548 J <1.00 138 53.3
10/19/2022 0.190 J <1.00 0.256 J 6.901 J <5.00 <50.0 <1.00 0.946 J <1.00 0.135 J <1.00 NA <10.0 0.221 J 3.13 0.322 J 0.733 J 1.35
6/12/2023 0.255 J <1.00 0.167 J 11.504 J <5.00 <50.0 <1.00 <5.00 <1.00 <1.00 <1.00 NA <10.0 0.115 J 3.16 <1.00 0.635 J 2.59
10/19/2022 0.110 J 2.37 1.12 29.5 <5.00 <50.0 0.731 J <5.00 0.646 J 0.267 J <1.00 NA 1.30 J 0.312 J 0.420 J 0.521 J 3.36 4.69
6/12/2023 413 <5.00 442 3,420 57.7 <250 <5.00 <25.0 52.8 <5.00 <5.00 NA 74.8 53.7 <5.00 <5.00 527 168
10/19/2022 1,390 11,600 1,150 8,860 203 <50.0 <1.00 <5.00 164 <1.00 5.95 NA 239 121 0.635 J <1.00 1,450 502
6/12/2023 0.125 J 13.9 12.5 88.3 <5.00 <50.0 <1.00 <5.00 1.25 0.225 J <1.00 NA <10.0 2.23 0.385 J <1.00 11.2 8.90
10/19/2022 0.116J 7.72 0.631 J 6.42 1.41 J <50.0 <1.00 <5.00 0.312 J <1.00 <1.00 NA 5.79 J 0.564 J <1.00 0.282 J 4.39 1.56
6/12/2023 0.155 J <1.00 0.321 J 2.288 J <5.00 <50.0 <1.00 <5.00 <1.00 <1.00 <1.00 NA 0.872 J 0.193 J <1.00 <1.00 0.663 J 1.24
1 600 600 500 6 4 0.6 0.04 0.02 0.4 0.6 40 100 70 0.7 0.6 400 400
5,000 260,000 80,000 50,000 6,000 NE NE NE 50 400 600 40,000 100,000 26,100 700 600 28,500 24,100
Notes:
1. "<" or ND = Not Detected at or above the reporting limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb).
5. GCL = Gross Contamination Level.
6. J = Reported value is an estimate.
7. NE = Not established.
8. NA = Not analyzed.
9. NR = Not reported.
GCL
3. Concentrations in BOLD print equal or exceed the NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).
4. Concentrations in Italics print equal or exceed the GCLs.
Monitoring
Well Date
Method 6200B
Enviro-Bac Installed
2L Standard
MW-1
MW-2
MW-3
MW-4
MW-1D
Page 1 of 1
TABLE 6
WATER SUPPLY WELL ANALYTICAL DATA
FARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #24177
Benzene Toluene Ethylbenzene Total Xylenes Naphthalene 1,2-Dichloroethane Tetrachloroethylene5/2/2018 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
3/11/2019 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
5/2/2018 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
3/11/2019 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
WSW-2 6/12/2023 <1.00 <1.00 <1.00 <2.00 <5.00 0.194 J <1.00
5/2/2018 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 2.6
3/11/2019 <0.5 <0.5 <0.5 <0.5 <0.5 0.37J 2.0
6/12/2023 <1.00 <1.00 <1.00 <2.00 <5.00 0.238 J 1.92
1 600 600 500 6 0.4 0.7
5,000 260,000 80,000 50,000 6,000 400 700
Notes:
1. "<" or ND = Not Detected at or above the reporting limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb).
5. GCL = Gross Contamination Level.
6. J = Reported value is an estimate.
7. NE = Not established.
8. NA = Not analyzed.
4. Concentrations in Italics print equal or exceed the GCLs.
Monitoring
Well Date
Method 6200B
WSW-1
(Old)
WSW-1
(New)
2L Standard
GCL
3. Concentrations in BOLD print equal or exceed the NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).
WSW-3
Page 1 of 1
Farrar’s Store

ATC Project No. STL2417701 NCDEQ State Lead Program
FIGURES
Project Number:
Date:Scale:
Drn. By:
Ckd. By:H:\2021\OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\FARRAR'S STORE\SLC2417702-VIC.DWG, FIG107/14/2023
FARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 24177
STL2417701 DH
JR
1
1:2,000TOPOGRAPHIC MAP
N
NC 65FARRAR STORE ROADLEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINESCALE: 1" = 20'05101520NF
A
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D SITEBUILDINGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGUST-1UST-3PORCHUST-2GGGAS LINEAPPROXIMATE AREAOF EXCAVATIONMW-1MW-1SHALLOW MONITORING WELLWell IdentificationGG
G
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EEEEE E E MW-4MW-3MW-2MW-1DEEUNDERGROUND ELECTRICMW-1DDEEP MONITORING WELLWell IdentificationFigure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2023\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\FARRAH'S STORE\STL2417701-SITE.DWG, FIG2
SITE MAP07/14/2023SEE LOWER LEFTFARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 24177
STL2417701AS SHOWNDH
JR2NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
50SCALE: 1" = 200'0100150200NNC 65RED OAK DRIVECLASSIC LANEFARRAR STORE ROADINTERSTATE 220SPARKLE LANETHRUSH ROADWILDFLOWER DRIVESITELEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEWSW-3POTABLE WATER SUPPLY WELLWell Identification500 FT.RADIUS1,000 FT.RADIUSWSW-12WSW-13WSW-11WSW-14WSW-15WSW-10WSW-9WSW-8WSW-6WSW-5WSW-7WSW-16WSW-2(OLD)WSW-2(NEW)WSW-1(NEW)WSW-1(OLD)WSW-4WSW-17WSW-18WSW-19WSW-20WSW-3WSW-1ABANDONED WATER SUPPLY WELLWell IdentificationWSW-17INACTIVE WATER SUPPLY WELLWell IdentificationFigure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2021\OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\FARRAR'S STORE\SLC2417702-WSW.DWG, FIG3
POTENTIAL RECEPTOR MAP07/14/2023SEE LOWER LEFTFARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 24177
STL2417701AS SHOWNDH
JR3NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET NON-POTABLE WATER SUPPLY WELLWell IdentificationWSW-19WSW-21
NC 65FARRAR STORE ROADLEGEND:SITE PROPERTY LINEPARCEL LINESCALE: 1" = 20'05101520NF
A
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D SITEBUILDINGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGUST-1UST-3PORCHUST-2GGGAS LINEAPPROXIMATE AREAOF EXCAVATIONMW-1GG
G
G GGGGG
G
G
G
G
GG
EEEEE E E MW-4MW-3MW-2MW-1DEEUNDERGROUND ELECTRICMW-1DDEEP MONITORING WELLWell IdentificationNOTE: ALL LOCATIONS ARE APPROXIMATE62.70GROUNDWATER ELEVATION CONTOUR(DASHED WHERE INFERRED) (ft)GROUNDWATER FLOW DIRECTIONMW-162.79SHALLOW MONITORING WELLWell IdentificationRelative Groundwater Elevation (ft)63.2463.0763.32*41.5863.6063.163.263.363.463.5Figure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2023\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\FARRAH'S STORE\STL2417701-POT.DWG, FIG3
GROUNDWATER ELEVATION CONTOUR MAP07/07/2023SEE LOWER LEFTFARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 24177
STL2417701AS SHOWNDH
JR4NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater elevations measured on June 12, 2023.
3.* MW-1D was not used to construct contours.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
NC 65FARRAR STORE ROADLEGEND:SITE PROPERTY LINEPARCEL LINESCALE: 1" = 20'05101520NF
A
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D SITEBUILDINGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGUST-1UST-3PORCHUST-2GGGAS LINEAPPROXIMATE AREAOF EXCAVATIONMW-1GG
G
G GGGGG
G
G
G
G
GG
EEEEE E E MW-4MW-3MW-2MW-1DEEUNDERGROUND ELECTRICMW-1DDEEP MONITORING WELLWell IdentificationNOTE: ALL LOCATIONS ARE APPROXIMATE100BENZENE ISOCONCENTRATION CONTOUR(DASHED WHERE INFERRED) (µg/L)MW-11.01SHALLOW MONITORING WELLWell IdentificationBenzene Concentration (µg/L)0.255J4131.01 J*0.155J0.125J11
0
100Figure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2023\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\FARRAH'S STORE\STL2417701-BENZ.DWG, FIG4
DISSOLVED BENZENE
ISOCONCENTRATION MAP07/07/2023SEE LOWER LEFTFARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 24177
STL2417701AS SHOWNDH
JR5NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater samples collected on June 12, 2023.
3.* MW-1D was not used to construct contours.
4.J = reported value is an estimate.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
NC 65FARRAR STORE ROADLEGEND:SITE PROPERTY LINEPARCEL LINESCALE: 1" = 20'05101520NF
A
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D SITEBUILDINGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGUST-1UST-3PORCHUST-2GGGAS LINEAPPROXIMATE AREAOF EXCAVATIONMW-1GG
G
G GGGGG
G
G
G
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GG
EEEEE E E MW-4MW-3MW-2MW-1DEEUNDERGROUND ELECTRICMW-1DDEEP MONITORING WELLWell IdentificationNOTE: ALL LOCATIONS ARE APPROXIMATE201,2-DIBROMOETHANE ISOCONCENTRATIONCONTOUR (DASHED WHERE INFERRED) (µg/L)MW-11.25SHALLOW MONITORING WELLWell Identification1,2-Dibromoethane Concentration (µg/L)<1.0052.83.88<1.001.25202.00.20.02Figure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2023\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\FARRAH'S STORE\STL2417701-12D.DWG, FIG5
DISSOLVED 1,2-DIBROMOETHANE
ISOCONCENTRATION MAP07/07/2023SEE LOWER LEFTFARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 24177
STL2417701AS SHOWNDH
JR6NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater samples collected on June 12, 2023.
3.* MW-1D was not used to construct contours.
4.J = reported value is an estimate.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
NC 65FARRAR STORE ROADLEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINESCALE: 1" = 20'05101520NF
A
R
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D SITEBUILDINGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGUST-1UST-3PORCHUST-2GGGAS LINEAPPROXIMATE AREAOF EXCAVATIONMW-1MW-1SHALLOW MONITORING WELLWell IdentificationGG
G
G GGGGG
G
G
G
G
GG
EEEEE E E MW-4MW-3MW-2MW-1DEEUNDERGROUND ELECTRICMW-1DDEEP MONITORING WELLWell IdentificationFigure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2023\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\FARRAH'S STORE\STL2417701-GW.DWG, FIG6
ADDITIONAL CHEMICALS OF CONCERN
IN GROUNDWATER07/07/2023SEE LOWER LEFTFARRAR'S STORE
397 FARRAR STORE ROAD
STOKESDALE, ROCKINGHAM COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 24177
STL2417701AS SHOWNDH
JR7NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater samples collected on June 12, 2023.
3.Groundwater is measured in micrograms per liter (µg/L).
4.J = Reported value is an estimate.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
Farrar’s Store

ATC Project No. STL2417701 NCDEQ State Lead Program
APPENDIX A

CONCEPTUAL SITE MODEL
Site Name: Farrars's Store Date: 07/14/2023
Property Owner: Greg Westmoreland Last Field Event Date:6/12/2023
Site Name:Farrar's Store Release Discovery Date:9/24/2004
NCDEQ UST Incident No.:24177 Source of Release:UST System
Facility ID No.:Unregistered Estimated Volume of Release:Unknown
Risk Classification:High
Risk Rank:Unknown Gasoline (leaded)Unknown
Site Address:397 Farrar Store Road Gasoline (unleaded)Unknown
Site City, ST ZIP:Stokesdale, NC 27357 Gasoline (ethanol blend)Unknown
Site County:Rockingham Diesel No
NCDEQ Regional Office:Winston-Salem Kerosene No
Active UST Facility:No Heating Oil (#2)No
USTs Present:No Heating Oil (>#2)No
Motor Oil No
Hydraulic Oil No
Major Soil Type:sand, clay, silt Used Oil No
Surface Cover over impacted soil:No
Utilities within plume (Y/N/U):Unknown
>S-W MSCCs (Y/N/U):Yes
>Residential MSCCs (Y/N/U):Yes Site (Current):Vacant
>Comm/Ind MSCCs (Y/N/U):No Site (Future):Unknown
North Adjacent:Residential
East Adjacent:Residential
Litho-Tectonic Zone Piemont South Adjacent:Residential
Geologic Formation Charlotte and Milton Belts West Adjacent:Residential
Rock Type Metamorphic
Depth to Bedrock (ft bgs)44 Municipal Water (Y/N/U):Yes
Active Potable Wells <1000 ft (#/U):Yes (16 total)
Active Potable Wells <500 ft (#/U):Yes (6 total)
Depth to water (ft-bgs)
Type II Well Network:
34.07-37.25 ft bgs
Type III Well Network:
58.25-79.55 ft bgs
Impacted Wells (Y/N/U):Yes
Gradient (ft/ft):0.00512 Any wells <250 ft (Y/N/U):Yes
Direction (N E S W combo):East
Hydraulic Conductivity (ft/day):Unknown <500 ft (Y/N):No
Total Porosity (%):Unknown Type of Surface Water:N/A
Effective Porosity (%):Unknown Name of Nearest Stream:
Unnamed stream located approximately
900 feet south-southeast of the site which
connects a freshwater pond to a wetland.
Flow Rate (ft/year):Unknown Stream Classification:R4SBC (R - Riverine; 4 - intermittent; SB -
streambed; C - seasonally flooded)
COCs >2L (Y/N/U):Yes Impacted Surface Water (Y/N/U): - -
COCs >2L Extent Defined (Y/N):No
COCs >GCLs (Y/N/U):Yes
COCs >GCLs (Wells):MW-3 >LEL in Structures:No
COCs >GCLs Extent Defined (Y/N):No Vapors in Buildings:No
COCs >2B Standards by 10X (Y/N/U):N/A Slab-on-grade or Crawlspace:No
LNAPL (Y/N/U):N/A Dissolved VOCs <5 ft of Structures:No
LNAPL (Max Thickness ft):N/A LNAPL <15 ft of Structures:No
LNAPL (Wells):N/A Basement <30 ft of Dissolved COCs:No
LNAPL Extent Defined (Y/N):N/A
LNAPL (<5 ft beneath buildings/U):N/A
Utilities within plume (Y/N/U):Unknown
Alternative Water Source:Yes - connect at risk properties with
water supply wells to municipal water
NORP: - -
Site Remediation: - -
Soil Excavation: - -
AFVR: - -
MMPE: - -
SVE/AS: - -
Other:Need to delineate GCL impacts prior to
determining a pathway to closure.
Additional Support Documentation Available / Data Gaps:
In Febraury 2011, ten soil borings were installed at the site which resulted in
detections of contaminants of concern at concentrations which exceeded the
applicable soil-to-groundwater and residential maximum soil contaminant
concentrations. Source removal activities were completed in August 2015 which
resulted in the removal of UST-3 and contaminated soils from within the former UST
basins. Approximately 70.64 tons of imported fill was brought to the site following
the UST and source removal. However, a report documenting UST closure and
source removal activities was not available for review. Therefore, it is unknown
whether or not soil impacts remain the the site and to what extent.
Approach (general discussion):
(1) Reduce risk classification by
reducing receptors (abandoning water
supply wells and connecting properties
to municipal water).
(2) Reduce impacted groundwater
concentrations below GCLs.
Surface Water
Land Use / Zoning
Site is currently vacant.
CONCEPTUAL SITE MODEL
Soil Information
Possible Path(s) to Closure
Site Information Release Information
Petroleum Type Released
Geologic Information
Groundwater Information
Comments:
Receptor Information
Water Supply
Vapor
Page 1 of 1
Farrar’s Store

ATC Project No. STL2417701 NCDEQ State Lead Program
APPENDIX B

SITE PHOTOGRAPHS

Photo 1: Site status Photo 2: View of MW-1.
Site Photographs
Farrar’s Store - Incident #24177

397 Farrar Store Road
Stokesdale, Rockingham County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Justin Jones Site ID: Incident #24177 ATC Project No.: STL2417701

Photo 3: View of MW-2. Photo 4: View of MW-3.
Site Photographs

Farrar’s Store - Incident #24177

397 Farrar Store Road
Stokesdale, Rockingham County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Justin Jones Site ID: Incident #24177 ATC Project No.: STL2417701

Photo 5: View of MW-4. Photo 6: View of MW-1D.
Site Photographs

Farrar’s Store - Incident #24177

397 Farrar Store Road
Stokesdale, Rockingham County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Justin Jones Site ID: Incident #24177 ATC Project No.: STL2417701

Photo 7: View of WSW-2. Photo 8: View of WSW-3.
Site Photographs

Farrar’s Store - Incident #24177

397 Farrar Store Road
Stokesdale, Rockingham County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Justin Jones Site ID: Incident #24177 ATC Project No.: STL2417701
Farrar’s Store

ATC Project No. STL2417701 NCDEQ State Lead Program
APPENDIX C

FIELD NOTES
Farrar’s Store

ATC Project No. STL2417701 NCDEQ State Lead Program
APPENDIX D

GSI MANN-KENDALL TOOLKIT
Evaluation Date:Job ID:
Facility Name:Constituent:
Conducted By:Concentration Units:µg/L
Sampling Point ID:Benzene Total Xylenes Naphthalene EDB 1,2-DCE 1,2,4-TMB
Sampling Sampling
Event Date
1 05/02/18 3.5 730 6.5 7.4 0.7 97
2 01/31/19 0.25 114.8 2.9 1.3 0.25 55
3 03/11/19 0.25 90.4 2.6 0.1 0.25 34.8
4 11/14/19 2.8 520 30 16 0.2 110
5 01/02/20 4.4 980 30 23 3 250
6 06/24/21 7.25 3080 59.5 44 7.3 548
7 10/19/22 1.46 2029 79.8 12.6 1.74 510
8 06/12/23 1.01 622 10.7 3.88 0.479 138
9
10
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:0.92 1.01 1.03 1.08 1.41 0.93
Mann-Kendall Statistic (S):3 10 13 6 5 14
Confidence Factor:59.4%86.2%92.9%72.6%68.3%94.6%
Concentration Trend:No Trend No Trend Prob. Increasing No Trend No Trend Prob. Increasing
Notes:
1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable.
3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI Environmental Inc., www.gsi-net.com
MW-1 CONCENTRATION (µg/L)
7/14/2023
Farrar's Store MW-1
GSI MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
ATC Associates of North Carolina, P.C.
Incident #24177
0.1
1
10
100
1000
10000
09/17 02/19 06/20 10/21 03/23 07/24Concentration (µg/L)Sampling Date
Benzene
Total Xylenes
Naphthalene
EDB
1,2-DCE
1,2,4-TMB
Farrar’s Store

ATC Project No. STL2417701 NCDEQ State Lead Program
APPENDIX E

LABORATORY ANALYTICAL RESULTS
ANALYTICAL REPORT
June 22, 2023
ATC Group Services LLC
Sample Delivery Group:L1625719
Samples Received:06/14/2023
Project Number:
Description:Farrar's Store
Report To:Nicholas Kramer
2725 E. Millbrook Road, Ste 121
Raleigh, NC 27604
Entire Report Reviewed By:
June 22, 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
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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June 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 L1625719-01 5
MW-2 L1625719-02 7
MW-3 L1625719-03 9
MW-4 L1625719-04 11
MW-1D L1625719-05 13
FB-1 L1625719-06 15
WSW-2 L1625719-07 17
WSW-3 L1625719-08 19
Qc: Quality Control Summary 21
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 21
Gl: Glossary of Terms 34
Al: Accreditations & Locations 35
Sc: Sample Chain of Custody 36
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 L1625719-01 GW Justin Jones 06/12/23 11:25 06/14/23 09:05
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2079572 1 06/17/23 11:36 06/17/23 11:36 JAH Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2081057 10 06/21/23 12:45 06/21/23 12:45 TJJ Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-2 L1625719-02 GW Justin Jones 06/12/23 12:15 06/14/23 09:05
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2080288 1 06/19/23 12:15 06/19/23 12:15 JBE Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2081917 1 06/21/23 16:22 06/21/23 16:22 JHH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-3 L1625719-03 GW Justin Jones 06/12/23 12:25 06/14/23 09:05
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2080288 5 06/19/23 12:35 06/19/23 12:35 JBE Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2081917 100 06/21/23 20:50 06/21/23 20:50 DYW Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-4 L1625719-04 GW Justin Jones 06/12/23 13:00 06/14/23 09:05
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2080288 1 06/19/23 12:56 06/19/23 12:56 JBE Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-1D L1625719-05 GW Justin Jones 06/12/23 11:00 06/14/23 09:05
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2080288 1 06/19/23 13:17 06/19/23 13:17 JBE Mt. Juliet, TN
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2081917 5 06/21/23 21:10 06/21/23 21:10 DYW Mt. Juliet, TN
Collected by Collected date/time Received date/time
FB-1 L1625719-06 GW Justin Jones 06/12/23 13:10 06/14/23 09:05
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2081917 1 06/21/23 17:03 06/21/23 17:03 DYW Mt. Juliet, TN
Collected by Collected date/time Received date/time
WSW-2 L1625719-07 GW Justin Jones 06/12/23 13:30 06/14/23 09:05
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2080288 1 06/19/23 13:37 06/19/23 13:37 JBE Mt. Juliet, TN
Collected by Collected date/time Received date/time
WSW-3 L1625719-08 GW Justin Jones 06/12/23 13:50 06/14/23 09:05
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2080288 1 06/19/23 13:58 06/19/23 13:58 JBE 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
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Heather J Wagner
Project Manager
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SAMPLE RESULTS - 01
L1625719
MW-1
Collected date/time: 06/12/23 11:25
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 14.3 J 11.3 50.0 1 06/17/2023 11:36 WG2079572
Acrolein U 2.54 50.0 1 06/17/2023 11:36 WG2079572
Acrylonitrile U 0.671 10.0 1 06/17/2023 11:36 WG2079572
Benzene 1.01 J 0.941 10.0 10 06/21/2023 12:45 WG2081057
Bromobenzene U 0.118 1.00 1 06/17/2023 11:36 WG2079572
Bromodichloromethane U 0.136 1.00 1 06/17/2023 11:36 WG2079572
Bromoform U 0.129 1.00 1 06/17/2023 11:36 WG2079572
Bromomethane U 0.605 5.00 1 06/17/2023 11:36 WG2079572
n-Butylbenzene U 0.157 1.00 1 06/17/2023 11:36 WG2079572
sec-Butylbenzene 1.16 0.125 1.00 1 06/17/2023 11:36 WG2079572
tert-Butylbenzene U 0.127 1.00 1 06/17/2023 11:36 WG2079572
Carbon tetrachloride U 0.128 1.00 1 06/17/2023 11:36 WG2079572
Chlorobenzene U 0.116 1.00 1 06/17/2023 11:36 WG2079572
Chlorodibromomethane U 0.140 1.00 1 06/17/2023 11:36 WG2079572
Chloroethane U 0.192 5.00 1 06/17/2023 11:36 WG2079572
Chloroform U 0.111 5.00 1 06/17/2023 11:36 WG2079572
Chloromethane U 0.960 2.50 1 06/17/2023 11:36 WG2079572
2-Chlorotoluene U 0.106 1.00 1 06/17/2023 11:36 WG2079572
4-Chlorotoluene U 0.114 1.00 1 06/17/2023 11:36 WG2079572
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/17/2023 11:36 WG2079572
1,2-Dibromoethane 3.88 0.126 1.00 1 06/17/2023 11:36 WG2079572
Dibromomethane U 0.122 1.00 1 06/17/2023 11:36 WG2079572
1,2-Dichlorobenzene U 0.107 1.00 1 06/17/2023 11:36 WG2079572
1,3-Dichlorobenzene U 0.110 1.00 1 06/17/2023 11:36 WG2079572
1,4-Dichlorobenzene U 0.120 1.00 1 06/17/2023 11:36 WG2079572
Dichlorodifluoromethane U 0.374 5.00 1 06/17/2023 11:36 WG2079572
1,1-Dichloroethane U 0.100 1.00 1 06/17/2023 11:36 WG2079572
1,2-Dichloroethane 0.479 J 0.0819 1.00 1 06/17/2023 11:36 WG2079572
1,1-Dichloroethene U 0.188 1.00 1 06/17/2023 11:36 WG2079572
cis-1,2-Dichloroethene U 0.126 1.00 1 06/17/2023 11:36 WG2079572
trans-1,2-Dichloroethene U 0.149 1.00 1 06/17/2023 11:36 WG2079572
1,2-Dichloropropane U 0.149 1.00 1 06/17/2023 11:36 WG2079572
1,1-Dichloropropene U 0.142 1.00 1 06/17/2023 11:36 WG2079572
1,3-Dichloropropane U 0.110 1.00 1 06/17/2023 11:36 WG2079572
2,2-Dichloropropane U 0.161 1.00 1 06/17/2023 11:36 WG2079572
Di-isopropyl ether U 0.105 1.00 1 06/17/2023 11:36 WG2079572
Ethylbenzene 109 0.137 1.00 1 06/17/2023 11:36 WG2079572
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/17/2023 11:36 WG2079572
Isopropylbenzene 5.36 0.105 1.00 1 06/17/2023 11:36 WG2079572
p-Isopropyltoluene U 0.120 1.00 1 06/17/2023 11:36 WG2079572
2-Butanone (MEK)U 1.19 10.0 1 06/17/2023 11:36 WG2079572
Methylene Chloride U 0.430 5.00 1 06/17/2023 11:36 WG2079572
4-Methyl-2-pentanone (MIBK)4.64 J 0.478 10.0 1 06/17/2023 11:36 WG2079572
Methyl tert-butyl ether U 0.101 1.00 1 06/17/2023 11:36 WG2079572
Naphthalene 10.7 1.00 5.00 1 06/17/2023 11:36 WG2079572
n-Propylbenzene 22.3 0.0993 1.00 1 06/17/2023 11:36 WG2079572
Styrene U 0.118 1.00 1 06/17/2023 11:36 WG2079572
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/17/2023 11:36 WG2079572
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/17/2023 11:36 WG2079572
Tetrachloroethene 0.548 J 0.300 1.00 1 06/17/2023 11:36 WG2079572
Toluene 135 0.278 1.00 1 06/17/2023 11:36 WG2079572
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/17/2023 11:36 WG2079572
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/17/2023 11:36 WG2079572
1,1,1-Trichloroethane U 0.149 1.00 1 06/17/2023 11:36 WG2079572
1,1,2-Trichloroethane U 0.158 1.00 1 06/17/2023 11:36 WG2079572
Trichloroethene U 0.190 1.00 1 06/17/2023 11:36 WG2079572
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 01
L1625719
MW-1
Collected date/time: 06/12/23 11:25
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 06/17/2023 11:36 WG2079572
1,2,3-Trichloropropane U 0.237 2.50 1 06/17/2023 11:36 WG2079572
1,2,4-Trimethylbenzene 138 0.322 1.00 1 06/17/2023 11:36 WG2079572
1,3,5-Trimethylbenzene 53.3 0.104 1.00 1 06/17/2023 11:36 WG2079572
Vinyl chloride U 0.234 1.00 1 06/17/2023 11:36 WG2079572
o-Xylene 198 1.74 10.0 10 06/21/2023 12:45 WG2081057
m&p-Xylenes 424 4.30 20.0 10 06/21/2023 12:45 WG2081057
(S) Toluene-d8 115 80.0-120 06/17/2023 11:36 WG2079572
(S) Toluene-d8 100 80.0-120 06/21/2023 12:45 WG2081057
(S) 4-Bromofluorobenzene 111 77.0-126 06/17/2023 11:36 WG2079572
(S) 4-Bromofluorobenzene 96.9 77.0-126 06/21/2023 12:45 WG2081057
(S) 1,2-Dichloroethane-d4 103 70.0-130 06/17/2023 11:36 WG2079572
(S) 1,2-Dichloroethane-d4 107 70.0-130 06/21/2023 12:45 WG2081057
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 02
L1625719
MW-2
Collected date/time: 06/12/23 12:15
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 06/19/2023 12:15 WG2080288
Acrolein U 2.54 50.0 1 06/19/2023 12:15 WG2080288
Acrylonitrile U 0.671 10.0 1 06/19/2023 12:15 WG2080288
Benzene 0.255 J 0.0941 1.00 1 06/19/2023 12:15 WG2080288
Bromobenzene U 0.118 1.00 1 06/21/2023 16:22 WG2081917
Bromodichloromethane U 0.136 1.00 1 06/19/2023 12:15 WG2080288
Bromoform U 0.129 1.00 1 06/21/2023 16:22 WG2081917
Bromomethane U 0.605 5.00 1 06/19/2023 12:15 WG2080288
n-Butylbenzene U 0.157 1.00 1 06/21/2023 16:22 WG2081917
sec-Butylbenzene U 0.125 1.00 1 06/21/2023 16:22 WG2081917
tert-Butylbenzene U 0.127 1.00 1 06/21/2023 16:22 WG2081917
Carbon tetrachloride U 0.128 1.00 1 06/19/2023 12:15 WG2080288
Chlorobenzene U 0.116 1.00 1 06/21/2023 16:22 WG2081917
Chlorodibromomethane U 0.140 1.00 1 06/21/2023 16:22 WG2081917
Chloroethane U 0.192 5.00 1 06/19/2023 12:15 WG2080288
Chloroform U 0.111 5.00 1 06/19/2023 12:15 WG2080288
Chloromethane U 0.960 2.50 1 06/19/2023 12:15 WG2080288
2-Chlorotoluene U 0.106 1.00 1 06/21/2023 16:22 WG2081917
4-Chlorotoluene U 0.114 1.00 1 06/21/2023 16:22 WG2081917
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/21/2023 16:22 WG2081917
1,2-Dibromoethane U 0.126 1.00 1 06/21/2023 16:22 WG2081917
Dibromomethane U 0.122 1.00 1 06/19/2023 12:15 WG2080288
1,2-Dichlorobenzene U 0.107 1.00 1 06/21/2023 16:22 WG2081917
1,3-Dichlorobenzene U 0.110 1.00 1 06/21/2023 16:22 WG2081917
1,4-Dichlorobenzene U 0.120 1.00 1 06/21/2023 16:22 WG2081917
Dichlorodifluoromethane U 0.374 5.00 1 06/19/2023 12:15 WG2080288
1,1-Dichloroethane U 0.100 1.00 1 06/19/2023 12:15 WG2080288
1,2-Dichloroethane U 0.0819 1.00 1 06/19/2023 12:15 WG2080288
1,1-Dichloroethene U 0.188 1.00 1 06/19/2023 12:15 WG2080288
cis-1,2-Dichloroethene U 0.126 1.00 1 06/19/2023 12:15 WG2080288
trans-1,2-Dichloroethene U 0.149 1.00 1 06/19/2023 12:15 WG2080288
1,2-Dichloropropane U 0.149 1.00 1 06/19/2023 12:15 WG2080288
1,1-Dichloropropene U 0.142 1.00 1 06/19/2023 12:15 WG2080288
1,3-Dichloropropane U 0.110 1.00 1 06/21/2023 16:22 WG2081917
2,2-Dichloropropane U 0.161 1.00 1 06/19/2023 12:15 WG2080288
Di-isopropyl ether U 0.105 1.00 1 06/19/2023 12:15 WG2080288
Ethylbenzene 0.167 J 0.137 1.00 1 06/21/2023 16:22 WG2081917
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/21/2023 16:22 WG2081917
Isopropylbenzene 0.141 J 0.105 1.00 1 06/21/2023 16:22 WG2081917
p-Isopropyltoluene U 0.120 1.00 1 06/21/2023 16:22 WG2081917
2-Butanone (MEK)U 1.19 10.0 1 06/19/2023 12:15 WG2080288
Methylene Chloride U 0.430 5.00 1 06/19/2023 12:15 WG2080288
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 06/19/2023 12:15 WG2080288
Methyl tert-butyl ether U 0.101 1.00 1 06/19/2023 12:15 WG2080288
Naphthalene U 1.00 5.00 1 06/21/2023 16:22 WG2081917
n-Propylbenzene 0.115 J 0.0993 1.00 1 06/21/2023 16:22 WG2081917
Styrene U 0.118 1.00 1 06/21/2023 16:22 WG2081917
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/21/2023 16:22 WG2081917
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/21/2023 16:22 WG2081917
Tetrachloroethene 3.16 0.300 1.00 1 06/21/2023 16:22 WG2081917
Toluene U 0.278 1.00 1 06/21/2023 16:22 WG2081917
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/21/2023 16:22 WG2081917
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/21/2023 16:22 WG2081917
1,1,1-Trichloroethane U 0.149 1.00 1 06/19/2023 12:15 WG2080288
1,1,2-Trichloroethane U 0.158 1.00 1 06/21/2023 16:22 WG2081917
Trichloroethene U 0.190 1.00 1 06/19/2023 12:15 WG2080288
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 7 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 7 of 36
SAMPLE RESULTS - 02
L1625719
MW-2
Collected date/time: 06/12/23 12:15
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 06/19/2023 12:15 WG2080288
1,2,3-Trichloropropane U 0.237 2.50 1 06/21/2023 16:22 WG2081917
1,2,4-Trimethylbenzene 0.635 J 0.322 1.00 1 06/21/2023 16:22 WG2081917
1,3,5-Trimethylbenzene 2.59 0.104 1.00 1 06/21/2023 16:22 WG2081917
Vinyl chloride U 0.234 1.00 1 06/19/2023 12:15 WG2080288
o-Xylene 10.6 0.174 1.00 1 06/21/2023 16:22 WG2081917
m&p-Xylenes 0.904 J 0.430 2.00 1 06/21/2023 16:22 WG2081917
(S) Toluene-d8 107 80.0-120 06/19/2023 12:15 WG2080288
(S) Toluene-d8 115 80.0-120 06/21/2023 16:22 WG2081917
(S) 4-Bromofluorobenzene 103 77.0-126 06/19/2023 12:15 WG2080288
(S) 4-Bromofluorobenzene 96.0 77.0-126 06/21/2023 16:22 WG2081917
(S) 1,2-Dichloroethane-d4 88.9 70.0-130 06/19/2023 12:15 WG2080288
(S) 1,2-Dichloroethane-d4 120 70.0-130 06/21/2023 16:22 WG2081917
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 8 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 8 of 36
SAMPLE RESULTS - 03
L1625719
MW-3
Collected date/time: 06/12/23 12:25
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 74.7 J 56.5 250 5 06/19/2023 12:35 WG2080288
Acrolein U 12.7 250 5 06/19/2023 12:35 WG2080288
Acrylonitrile U 3.36 50.0 5 06/19/2023 12:35 WG2080288
Benzene 413 0.471 5.00 5 06/19/2023 12:35 WG2080288
Bromobenzene U 0.590 5.00 5 06/19/2023 12:35 WG2080288
Bromodichloromethane 1.03 J 0.680 5.00 5 06/19/2023 12:35 WG2080288
Bromoform U 0.645 5.00 5 06/19/2023 12:35 WG2080288
Bromomethane U 3.03 25.0 5 06/19/2023 12:35 WG2080288
n-Butylbenzene U 0.785 5.00 5 06/19/2023 12:35 WG2080288
sec-Butylbenzene U 0.625 5.00 5 06/19/2023 12:35 WG2080288
tert-Butylbenzene U 0.635 5.00 5 06/19/2023 12:35 WG2080288
Carbon tetrachloride U 0.640 5.00 5 06/19/2023 12:35 WG2080288
Chlorobenzene U 0.580 5.00 5 06/19/2023 12:35 WG2080288
Chlorodibromomethane U 0.700 5.00 5 06/19/2023 12:35 WG2080288
Chloroethane U 0.960 25.0 5 06/19/2023 12:35 WG2080288
Chloroform U 0.555 25.0 5 06/19/2023 12:35 WG2080288
Chloromethane U 4.80 12.5 5 06/19/2023 12:35 WG2080288
2-Chlorotoluene U 0.530 5.00 5 06/19/2023 12:35 WG2080288
4-Chlorotoluene U 0.570 5.00 5 06/19/2023 12:35 WG2080288
1,2-Dibromo-3-Chloropropane U 1.38 25.0 5 06/19/2023 12:35 WG2080288
1,2-Dibromoethane 52.8 0.630 5.00 5 06/19/2023 12:35 WG2080288
Dibromomethane U 0.610 5.00 5 06/19/2023 12:35 WG2080288
1,2-Dichlorobenzene U 0.535 5.00 5 06/19/2023 12:35 WG2080288
1,3-Dichlorobenzene U 0.550 5.00 5 06/19/2023 12:35 WG2080288
1,4-Dichlorobenzene U 0.600 5.00 5 06/19/2023 12:35 WG2080288
Dichlorodifluoromethane U 1.87 25.0 5 06/19/2023 12:35 WG2080288
1,1-Dichloroethane U 0.500 5.00 5 06/19/2023 12:35 WG2080288
1,2-Dichloroethane U 0.409 5.00 5 06/19/2023 12:35 WG2080288
1,1-Dichloroethene U 0.940 5.00 5 06/19/2023 12:35 WG2080288
cis-1,2-Dichloroethene U 0.630 5.00 5 06/19/2023 12:35 WG2080288
trans-1,2-Dichloroethene U 0.745 5.00 5 06/19/2023 12:35 WG2080288
1,2-Dichloropropane U 0.745 5.00 5 06/19/2023 12:35 WG2080288
1,1-Dichloropropene U 0.710 5.00 5 06/19/2023 12:35 WG2080288
1,3-Dichloropropane U 0.550 5.00 5 06/19/2023 12:35 WG2080288
2,2-Dichloropropane U 0.805 5.00 5 06/19/2023 12:35 WG2080288
Di-isopropyl ether U 0.525 5.00 5 06/19/2023 12:35 WG2080288
Ethylbenzene 442 0.685 5.00 5 06/19/2023 12:35 WG2080288
Hexachloro-1,3-butadiene U 1.69 5.00 5 06/19/2023 12:35 WG2080288
Isopropylbenzene 12.7 0.525 5.00 5 06/19/2023 12:35 WG2080288
p-Isopropyltoluene 5.15 0.600 5.00 5 06/19/2023 12:35 WG2080288
2-Butanone (MEK)55.5 5.95 50.0 5 06/19/2023 12:35 WG2080288
Methylene Chloride U 2.15 25.0 5 06/19/2023 12:35 WG2080288
4-Methyl-2-pentanone (MIBK)74.8 2.39 50.0 5 06/19/2023 12:35 WG2080288
Methyl tert-butyl ether U 0.505 5.00 5 06/19/2023 12:35 WG2080288
Naphthalene 57.7 5.00 25.0 5 06/19/2023 12:35 WG2080288
n-Propylbenzene 53.7 0.497 5.00 5 06/19/2023 12:35 WG2080288
Styrene U 0.590 5.00 5 06/19/2023 12:35 WG2080288
1,1,1,2-Tetrachloroethane U 0.735 5.00 5 06/19/2023 12:35 WG2080288
1,1,2,2-Tetrachloroethane U 0.665 5.00 5 06/19/2023 12:35 WG2080288
Tetrachloroethene U 1.50 5.00 5 06/19/2023 12:35 WG2080288
Toluene U 1.39 5.00 5 06/19/2023 12:35 WG2080288
1,2,3-Trichlorobenzene U 1.15 5.00 5 06/19/2023 12:35 WG2080288
1,2,4-Trichlorobenzene U 2.41 5.00 5 06/19/2023 12:35 WG2080288
1,1,1-Trichloroethane U 0.745 5.00 5 06/19/2023 12:35 WG2080288
1,1,2-Trichloroethane U 0.790 5.00 5 06/19/2023 12:35 WG2080288
Trichloroethene U 0.950 5.00 5 06/19/2023 12:35 WG2080288
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 9 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 9 of 36
SAMPLE RESULTS - 03
L1625719
MW-3
Collected date/time: 06/12/23 12:25
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 0.800 25.0 5 06/19/2023 12:35 WG2080288
1,2,3-Trichloropropane U 1.19 12.5 5 06/19/2023 12:35 WG2080288
1,2,4-Trimethylbenzene 527 1.61 5.00 5 06/19/2023 12:35 WG2080288
1,3,5-Trimethylbenzene 168 0.520 5.00 5 06/19/2023 12:35 WG2080288
Vinyl chloride U 1.17 5.00 5 06/19/2023 12:35 WG2080288
o-Xylene 1120 17.4 100 100 06/21/2023 20:50 WG2081917
m&p-Xylenes 2300 43.0 200 100 06/21/2023 20:50 WG2081917
(S) Toluene-d8 89.7 80.0-120 06/19/2023 12:35 WG2080288
(S) Toluene-d8 113 80.0-120 06/21/2023 20:50 WG2081917
(S) 4-Bromofluorobenzene 103 77.0-126 06/19/2023 12:35 WG2080288
(S) 4-Bromofluorobenzene 94.4 77.0-126 06/21/2023 20:50 WG2081917
(S) 1,2-Dichloroethane-d4 92.4 70.0-130 06/19/2023 12:35 WG2080288
(S) 1,2-Dichloroethane-d4 122 70.0-130 06/21/2023 20:50 WG2081917
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 10 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 10 of 36
SAMPLE RESULTS - 04
L1625719
MW-4
Collected date/time: 06/12/23 13:00
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 06/19/2023 12:56 WG2080288
Acrolein U 2.54 50.0 1 06/19/2023 12:56 WG2080288
Acrylonitrile U 0.671 10.0 1 06/19/2023 12:56 WG2080288
Benzene 0.125 J 0.0941 1.00 1 06/19/2023 12:56 WG2080288
Bromobenzene U 0.118 1.00 1 06/19/2023 12:56 WG2080288
Bromodichloromethane U 0.136 1.00 1 06/19/2023 12:56 WG2080288
Bromoform U 0.129 1.00 1 06/19/2023 12:56 WG2080288
Bromomethane U 0.605 5.00 1 06/19/2023 12:56 WG2080288
n-Butylbenzene U 0.157 1.00 1 06/19/2023 12:56 WG2080288
sec-Butylbenzene U 0.125 1.00 1 06/19/2023 12:56 WG2080288
tert-Butylbenzene U 0.127 1.00 1 06/19/2023 12:56 WG2080288
Carbon tetrachloride U 0.128 1.00 1 06/19/2023 12:56 WG2080288
Chlorobenzene U 0.116 1.00 1 06/19/2023 12:56 WG2080288
Chlorodibromomethane U 0.140 1.00 1 06/19/2023 12:56 WG2080288
Chloroethane U 0.192 5.00 1 06/19/2023 12:56 WG2080288
Chloroform U 0.111 5.00 1 06/19/2023 12:56 WG2080288
Chloromethane U 0.960 2.50 1 06/19/2023 12:56 WG2080288
2-Chlorotoluene U 0.106 1.00 1 06/19/2023 12:56 WG2080288
4-Chlorotoluene U 0.114 1.00 1 06/19/2023 12:56 WG2080288
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/19/2023 12:56 WG2080288
1,2-Dibromoethane 1.25 0.126 1.00 1 06/19/2023 12:56 WG2080288
Dibromomethane U 0.122 1.00 1 06/19/2023 12:56 WG2080288
1,2-Dichlorobenzene U 0.107 1.00 1 06/19/2023 12:56 WG2080288
1,3-Dichlorobenzene U 0.110 1.00 1 06/19/2023 12:56 WG2080288
1,4-Dichlorobenzene U 0.120 1.00 1 06/19/2023 12:56 WG2080288
Dichlorodifluoromethane U 0.374 5.00 1 06/19/2023 12:56 WG2080288
1,1-Dichloroethane U 0.100 1.00 1 06/19/2023 12:56 WG2080288
1,2-Dichloroethane 0.225 J 0.0819 1.00 1 06/19/2023 12:56 WG2080288
1,1-Dichloroethene U 0.188 1.00 1 06/19/2023 12:56 WG2080288
cis-1,2-Dichloroethene U 0.126 1.00 1 06/19/2023 12:56 WG2080288
trans-1,2-Dichloroethene U 0.149 1.00 1 06/19/2023 12:56 WG2080288
1,2-Dichloropropane U 0.149 1.00 1 06/19/2023 12:56 WG2080288
1,1-Dichloropropene U 0.142 1.00 1 06/19/2023 12:56 WG2080288
1,3-Dichloropropane U 0.110 1.00 1 06/19/2023 12:56 WG2080288
2,2-Dichloropropane U 0.161 1.00 1 06/19/2023 12:56 WG2080288
Di-isopropyl ether U 0.105 1.00 1 06/19/2023 12:56 WG2080288
Ethylbenzene 12.5 0.137 1.00 1 06/19/2023 12:56 WG2080288
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/19/2023 12:56 WG2080288
Isopropylbenzene 0.726 J 0.105 1.00 1 06/19/2023 12:56 WG2080288
p-Isopropyltoluene 0.357 J 0.120 1.00 1 06/19/2023 12:56 WG2080288
2-Butanone (MEK)U 1.19 10.0 1 06/19/2023 12:56 WG2080288
Methylene Chloride U 0.430 5.00 1 06/19/2023 12:56 WG2080288
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 06/19/2023 12:56 WG2080288
Methyl tert-butyl ether U 0.101 1.00 1 06/19/2023 12:56 WG2080288
Naphthalene U 1.00 5.00 1 06/19/2023 12:56 WG2080288
n-Propylbenzene 2.23 0.0993 1.00 1 06/19/2023 12:56 WG2080288
Styrene U 0.118 1.00 1 06/19/2023 12:56 WG2080288
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/19/2023 12:56 WG2080288
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/19/2023 12:56 WG2080288
Tetrachloroethene 0.385 J 0.300 1.00 1 06/19/2023 12:56 WG2080288
Toluene 13.9 0.278 1.00 1 06/19/2023 12:56 WG2080288
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/19/2023 12:56 WG2080288
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/19/2023 12:56 WG2080288
1,1,1-Trichloroethane U 0.149 1.00 1 06/19/2023 12:56 WG2080288
1,1,2-Trichloroethane U 0.158 1.00 1 06/19/2023 12:56 WG2080288
Trichloroethene U 0.190 1.00 1 06/19/2023 12:56 WG2080288
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 11 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 11 of 36
SAMPLE RESULTS - 04
L1625719
MW-4
Collected date/time: 06/12/23 13:00
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 06/19/2023 12:56 WG2080288
1,2,3-Trichloropropane U 0.237 2.50 1 06/19/2023 12:56 WG2080288
1,2,4-Trimethylbenzene 11.2 0.322 1.00 1 06/19/2023 12:56 WG2080288
1,3,5-Trimethylbenzene 8.90 0.104 1.00 1 06/19/2023 12:56 WG2080288
Vinyl chloride U 0.234 1.00 1 06/19/2023 12:56 WG2080288
o-Xylene 32.4 0.174 1.00 1 06/19/2023 12:56 WG2080288
m&p-Xylenes 55.9 0.430 2.00 1 06/19/2023 12:56 WG2080288
(S) Toluene-d8 104 80.0-120 06/19/2023 12:56 WG2080288
(S) 4-Bromofluorobenzene 102 77.0-126 06/19/2023 12:56 WG2080288
(S) 1,2-Dichloroethane-d4 95.1 70.0-130 06/19/2023 12:56 WG2080288
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 12 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 12 of 36
SAMPLE RESULTS - 05
L1625719
MW-1D
Collected date/time: 06/12/23 11:00
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 2600 56.5 250 5 06/21/2023 21:10 WG2081917
Acrolein U 2.54 50.0 1 06/19/2023 13:17 WG2080288
Acrylonitrile U 0.671 10.0 1 06/19/2023 13:17 WG2080288
Benzene 0.155 J 0.0941 1.00 1 06/19/2023 13:17 WG2080288
Bromobenzene U 0.118 1.00 1 06/19/2023 13:17 WG2080288
Bromodichloromethane U 0.136 1.00 1 06/19/2023 13:17 WG2080288
Bromoform U 0.129 1.00 1 06/19/2023 13:17 WG2080288
Bromomethane U 0.605 5.00 1 06/19/2023 13:17 WG2080288
n-Butylbenzene U 0.157 1.00 1 06/19/2023 13:17 WG2080288
sec-Butylbenzene U 0.125 1.00 1 06/19/2023 13:17 WG2080288
tert-Butylbenzene U 0.127 1.00 1 06/19/2023 13:17 WG2080288
Carbon tetrachloride U 0.128 1.00 1 06/19/2023 13:17 WG2080288
Chlorobenzene U 0.116 1.00 1 06/19/2023 13:17 WG2080288
Chlorodibromomethane U 0.140 1.00 1 06/19/2023 13:17 WG2080288
Chloroethane 0.215 J 0.192 5.00 1 06/19/2023 13:17 WG2080288
Chloroform 0.206 J 0.111 5.00 1 06/19/2023 13:17 WG2080288
Chloromethane U 0.960 2.50 1 06/19/2023 13:17 WG2080288
2-Chlorotoluene U 0.106 1.00 1 06/19/2023 13:17 WG2080288
4-Chlorotoluene U 0.114 1.00 1 06/19/2023 13:17 WG2080288
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/19/2023 13:17 WG2080288
1,2-Dibromoethane U 0.126 1.00 1 06/19/2023 13:17 WG2080288
Dibromomethane U 0.122 1.00 1 06/19/2023 13:17 WG2080288
1,2-Dichlorobenzene U 0.107 1.00 1 06/19/2023 13:17 WG2080288
1,3-Dichlorobenzene U 0.110 1.00 1 06/19/2023 13:17 WG2080288
1,4-Dichlorobenzene U 0.120 1.00 1 06/19/2023 13:17 WG2080288
Dichlorodifluoromethane U 0.374 5.00 1 06/19/2023 13:17 WG2080288
1,1-Dichloroethane U 0.100 1.00 1 06/19/2023 13:17 WG2080288
1,2-Dichloroethane U 0.0819 1.00 1 06/19/2023 13:17 WG2080288
1,1-Dichloroethene U 0.188 1.00 1 06/19/2023 13:17 WG2080288
cis-1,2-Dichloroethene U 0.126 1.00 1 06/19/2023 13:17 WG2080288
trans-1,2-Dichloroethene U 0.149 1.00 1 06/19/2023 13:17 WG2080288
1,2-Dichloropropane U 0.149 1.00 1 06/19/2023 13:17 WG2080288
1,1-Dichloropropene U 0.142 1.00 1 06/19/2023 13:17 WG2080288
1,3-Dichloropropane U 0.110 1.00 1 06/19/2023 13:17 WG2080288
2,2-Dichloropropane U 0.161 1.00 1 06/19/2023 13:17 WG2080288
Di-isopropyl ether U 0.105 1.00 1 06/19/2023 13:17 WG2080288
Ethylbenzene 0.321 J 0.137 1.00 1 06/19/2023 13:17 WG2080288
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/19/2023 13:17 WG2080288
Isopropylbenzene 0.125 J 0.105 1.00 1 06/19/2023 13:17 WG2080288
p-Isopropyltoluene U 0.120 1.00 1 06/19/2023 13:17 WG2080288
2-Butanone (MEK)7.66 J 1.19 10.0 1 06/19/2023 13:17 WG2080288
Methylene Chloride U 0.430 5.00 1 06/19/2023 13:17 WG2080288
4-Methyl-2-pentanone (MIBK)0.872 J 0.478 10.0 1 06/19/2023 13:17 WG2080288
Methyl tert-butyl ether U 0.101 1.00 1 06/19/2023 13:17 WG2080288
Naphthalene U 1.00 5.00 1 06/19/2023 13:17 WG2080288
n-Propylbenzene 0.193 J 0.0993 1.00 1 06/19/2023 13:17 WG2080288
Styrene U 0.118 1.00 1 06/19/2023 13:17 WG2080288
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/19/2023 13:17 WG2080288
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/19/2023 13:17 WG2080288
Tetrachloroethene U 0.300 1.00 1 06/19/2023 13:17 WG2080288
Toluene U 0.278 1.00 1 06/19/2023 13:17 WG2080288
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/19/2023 13:17 WG2080288
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/19/2023 13:17 WG2080288
1,1,1-Trichloroethane U 0.149 1.00 1 06/19/2023 13:17 WG2080288
1,1,2-Trichloroethane U 0.158 1.00 1 06/19/2023 13:17 WG2080288
Trichloroethene U 0.190 1.00 1 06/19/2023 13:17 WG2080288
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 13 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 13 of 36
SAMPLE RESULTS - 05
L1625719
MW-1D
Collected date/time: 06/12/23 11:00
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 06/19/2023 13:17 WG2080288
1,2,3-Trichloropropane U 0.237 2.50 1 06/19/2023 13:17 WG2080288
1,2,4-Trimethylbenzene 0.663 J 0.322 1.00 1 06/19/2023 13:17 WG2080288
1,3,5-Trimethylbenzene 1.24 0.104 1.00 1 06/19/2023 13:17 WG2080288
Vinyl chloride U 0.234 1.00 1 06/19/2023 13:17 WG2080288
o-Xylene 1.61 0.174 1.00 1 06/19/2023 13:17 WG2080288
m&p-Xylenes 0.678 J 0.430 2.00 1 06/19/2023 13:17 WG2080288
(S) Toluene-d8 104 80.0-120 06/19/2023 13:17 WG2080288
(S) Toluene-d8 116 80.0-120 06/21/2023 21:10 WG2081917
(S) 4-Bromofluorobenzene 104 77.0-126 06/19/2023 13:17 WG2080288
(S) 4-Bromofluorobenzene 92.4 77.0-126 06/21/2023 21:10 WG2081917
(S) 1,2-Dichloroethane-d4 94.5 70.0-130 06/19/2023 13:17 WG2080288
(S) 1,2-Dichloroethane-d4 118 70.0-130 06/21/2023 21:10 WG2081917
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 14 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 14 of 36
SAMPLE RESULTS - 06
L1625719
FB-1
Collected date/time: 06/12/23 13:10
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 06/21/2023 17:03 WG2081917
Acrolein U 2.54 50.0 1 06/21/2023 17:03 WG2081917
Acrylonitrile U 0.671 10.0 1 06/21/2023 17:03 WG2081917
Benzene U 0.0941 1.00 1 06/21/2023 17:03 WG2081917
Bromobenzene U 0.118 1.00 1 06/21/2023 17:03 WG2081917
Bromodichloromethane U 0.136 1.00 1 06/21/2023 17:03 WG2081917
Bromoform U 0.129 1.00 1 06/21/2023 17:03 WG2081917
Bromomethane U 0.605 5.00 1 06/21/2023 17:03 WG2081917
n-Butylbenzene U 0.157 1.00 1 06/21/2023 17:03 WG2081917
sec-Butylbenzene U 0.125 1.00 1 06/21/2023 17:03 WG2081917
tert-Butylbenzene U 0.127 1.00 1 06/21/2023 17:03 WG2081917
Carbon tetrachloride U 0.128 1.00 1 06/21/2023 17:03 WG2081917
Chlorobenzene U 0.116 1.00 1 06/21/2023 17:03 WG2081917
Chlorodibromomethane U 0.140 1.00 1 06/21/2023 17:03 WG2081917
Chloroethane U 0.192 5.00 1 06/21/2023 17:03 WG2081917
Chloroform U 0.111 5.00 1 06/21/2023 17:03 WG2081917
Chloromethane U 0.960 2.50 1 06/21/2023 17:03 WG2081917
2-Chlorotoluene U 0.106 1.00 1 06/21/2023 17:03 WG2081917
4-Chlorotoluene U 0.114 1.00 1 06/21/2023 17:03 WG2081917
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/21/2023 17:03 WG2081917
1,2-Dibromoethane U 0.126 1.00 1 06/21/2023 17:03 WG2081917
Dibromomethane U 0.122 1.00 1 06/21/2023 17:03 WG2081917
1,2-Dichlorobenzene U 0.107 1.00 1 06/21/2023 17:03 WG2081917
1,3-Dichlorobenzene U 0.110 1.00 1 06/21/2023 17:03 WG2081917
1,4-Dichlorobenzene U 0.120 1.00 1 06/21/2023 17:03 WG2081917
Dichlorodifluoromethane U 0.374 5.00 1 06/21/2023 17:03 WG2081917
1,1-Dichloroethane U J4 0.100 1.00 1 06/21/2023 17:03 WG2081917
1,2-Dichloroethane U 0.0819 1.00 1 06/21/2023 17:03 WG2081917
1,1-Dichloroethene U 0.188 1.00 1 06/21/2023 17:03 WG2081917
cis-1,2-Dichloroethene U 0.126 1.00 1 06/21/2023 17:03 WG2081917
trans-1,2-Dichloroethene U 0.149 1.00 1 06/21/2023 17:03 WG2081917
1,2-Dichloropropane U J4 0.149 1.00 1 06/21/2023 17:03 WG2081917
1,1-Dichloropropene U 0.142 1.00 1 06/21/2023 17:03 WG2081917
1,3-Dichloropropane U 0.110 1.00 1 06/21/2023 17:03 WG2081917
2,2-Dichloropropane U 0.161 1.00 1 06/21/2023 17:03 WG2081917
Di-isopropyl ether U 0.105 1.00 1 06/21/2023 17:03 WG2081917
Ethylbenzene U 0.137 1.00 1 06/21/2023 17:03 WG2081917
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/21/2023 17:03 WG2081917
Isopropylbenzene U 0.105 1.00 1 06/21/2023 17:03 WG2081917
p-Isopropyltoluene U 0.120 1.00 1 06/21/2023 17:03 WG2081917
2-Butanone (MEK)3.14 J 1.19 10.0 1 06/21/2023 17:03 WG2081917
Methylene Chloride 0.655 J 0.430 5.00 1 06/21/2023 17:03 WG2081917
4-Methyl-2-pentanone (MIBK)U J4 0.478 10.0 1 06/21/2023 17:03 WG2081917
Methyl tert-butyl ether U 0.101 1.00 1 06/21/2023 17:03 WG2081917
Naphthalene U 1.00 5.00 1 06/21/2023 17:03 WG2081917
n-Propylbenzene U 0.0993 1.00 1 06/21/2023 17:03 WG2081917
Styrene U 0.118 1.00 1 06/21/2023 17:03 WG2081917
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/21/2023 17:03 WG2081917
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/21/2023 17:03 WG2081917
Tetrachloroethene U 0.300 1.00 1 06/21/2023 17:03 WG2081917
Toluene U 0.278 1.00 1 06/21/2023 17:03 WG2081917
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/21/2023 17:03 WG2081917
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/21/2023 17:03 WG2081917
1,1,1-Trichloroethane U 0.149 1.00 1 06/21/2023 17:03 WG2081917
1,1,2-Trichloroethane U 0.158 1.00 1 06/21/2023 17:03 WG2081917
Trichloroethene U 0.190 1.00 1 06/21/2023 17:03 WG2081917
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 15 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 15 of 36
SAMPLE RESULTS - 06
L1625719
FB-1
Collected date/time: 06/12/23 13:10
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 06/21/2023 17:03 WG2081917
1,2,3-Trichloropropane U 0.237 2.50 1 06/21/2023 17:03 WG2081917
1,2,4-Trimethylbenzene U 0.322 1.00 1 06/21/2023 17:03 WG2081917
1,3,5-Trimethylbenzene U 0.104 1.00 1 06/21/2023 17:03 WG2081917
Vinyl chloride U 0.234 1.00 1 06/21/2023 17:03 WG2081917
o-Xylene U 0.174 1.00 1 06/21/2023 17:03 WG2081917
m&p-Xylenes U 0.430 2.00 1 06/21/2023 17:03 WG2081917
(S) Toluene-d8 118 80.0-120 06/21/2023 17:03 WG2081917
(S) 4-Bromofluorobenzene 91.4 77.0-126 06/21/2023 17:03 WG2081917
(S) 1,2-Dichloroethane-d4 125 70.0-130 06/21/2023 17:03 WG2081917
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 16 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 16 of 36
SAMPLE RESULTS - 07
L1625719
WSW-2
Collected date/time: 06/12/23 13:30
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 06/19/2023 13:37 WG2080288
Acrolein U 2.54 50.0 1 06/19/2023 13:37 WG2080288
Acrylonitrile U 0.671 10.0 1 06/19/2023 13:37 WG2080288
Benzene U 0.0941 1.00 1 06/19/2023 13:37 WG2080288
Bromobenzene U 0.118 1.00 1 06/19/2023 13:37 WG2080288
Bromodichloromethane U 0.136 1.00 1 06/19/2023 13:37 WG2080288
Bromoform U 0.129 1.00 1 06/19/2023 13:37 WG2080288
Bromomethane U 0.605 5.00 1 06/19/2023 13:37 WG2080288
n-Butylbenzene U 0.157 1.00 1 06/19/2023 13:37 WG2080288
sec-Butylbenzene U 0.125 1.00 1 06/19/2023 13:37 WG2080288
tert-Butylbenzene U 0.127 1.00 1 06/19/2023 13:37 WG2080288
Carbon tetrachloride U 0.128 1.00 1 06/19/2023 13:37 WG2080288
Chlorobenzene U 0.116 1.00 1 06/19/2023 13:37 WG2080288
Chlorodibromomethane U 0.140 1.00 1 06/19/2023 13:37 WG2080288
Chloroethane U 0.192 5.00 1 06/19/2023 13:37 WG2080288
Chloroform U 0.111 5.00 1 06/19/2023 13:37 WG2080288
Chloromethane U 0.960 2.50 1 06/19/2023 13:37 WG2080288
2-Chlorotoluene U 0.106 1.00 1 06/19/2023 13:37 WG2080288
4-Chlorotoluene U 0.114 1.00 1 06/19/2023 13:37 WG2080288
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/19/2023 13:37 WG2080288
1,2-Dibromoethane U 0.126 1.00 1 06/19/2023 13:37 WG2080288
Dibromomethane U 0.122 1.00 1 06/19/2023 13:37 WG2080288
1,2-Dichlorobenzene U 0.107 1.00 1 06/19/2023 13:37 WG2080288
1,3-Dichlorobenzene U 0.110 1.00 1 06/19/2023 13:37 WG2080288
1,4-Dichlorobenzene U 0.120 1.00 1 06/19/2023 13:37 WG2080288
Dichlorodifluoromethane U 0.374 5.00 1 06/19/2023 13:37 WG2080288
1,1-Dichloroethane U 0.100 1.00 1 06/19/2023 13:37 WG2080288
1,2-Dichloroethane 0.194 J 0.0819 1.00 1 06/19/2023 13:37 WG2080288
1,1-Dichloroethene U 0.188 1.00 1 06/19/2023 13:37 WG2080288
cis-1,2-Dichloroethene U 0.126 1.00 1 06/19/2023 13:37 WG2080288
trans-1,2-Dichloroethene U 0.149 1.00 1 06/19/2023 13:37 WG2080288
1,2-Dichloropropane U 0.149 1.00 1 06/19/2023 13:37 WG2080288
1,1-Dichloropropene U 0.142 1.00 1 06/19/2023 13:37 WG2080288
1,3-Dichloropropane U 0.110 1.00 1 06/19/2023 13:37 WG2080288
2,2-Dichloropropane U 0.161 1.00 1 06/19/2023 13:37 WG2080288
Di-isopropyl ether U 0.105 1.00 1 06/19/2023 13:37 WG2080288
Ethylbenzene U 0.137 1.00 1 06/19/2023 13:37 WG2080288
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/19/2023 13:37 WG2080288
Isopropylbenzene U 0.105 1.00 1 06/19/2023 13:37 WG2080288
p-Isopropyltoluene U 0.120 1.00 1 06/19/2023 13:37 WG2080288
2-Butanone (MEK)U 1.19 10.0 1 06/19/2023 13:37 WG2080288
Methylene Chloride U 0.430 5.00 1 06/19/2023 13:37 WG2080288
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 06/19/2023 13:37 WG2080288
Methyl tert-butyl ether U 0.101 1.00 1 06/19/2023 13:37 WG2080288
Naphthalene U 1.00 5.00 1 06/19/2023 13:37 WG2080288
n-Propylbenzene U 0.0993 1.00 1 06/19/2023 13:37 WG2080288
Styrene U 0.118 1.00 1 06/19/2023 13:37 WG2080288
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/19/2023 13:37 WG2080288
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/19/2023 13:37 WG2080288
Tetrachloroethene U 0.300 1.00 1 06/19/2023 13:37 WG2080288
Toluene U 0.278 1.00 1 06/19/2023 13:37 WG2080288
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/19/2023 13:37 WG2080288
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/19/2023 13:37 WG2080288
1,1,1-Trichloroethane U 0.149 1.00 1 06/19/2023 13:37 WG2080288
1,1,2-Trichloroethane U 0.158 1.00 1 06/19/2023 13:37 WG2080288
Trichloroethene U 0.190 1.00 1 06/19/2023 13:37 WG2080288
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 17 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 17 of 36
SAMPLE RESULTS - 07
L1625719
WSW-2
Collected date/time: 06/12/23 13:30
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 06/19/2023 13:37 WG2080288
1,2,3-Trichloropropane U 0.237 2.50 1 06/19/2023 13:37 WG2080288
1,2,4-Trimethylbenzene U 0.322 1.00 1 06/19/2023 13:37 WG2080288
1,3,5-Trimethylbenzene U 0.104 1.00 1 06/19/2023 13:37 WG2080288
Vinyl chloride U 0.234 1.00 1 06/19/2023 13:37 WG2080288
o-Xylene U 0.174 1.00 1 06/19/2023 13:37 WG2080288
m&p-Xylenes U 0.430 2.00 1 06/19/2023 13:37 WG2080288
(S) Toluene-d8 106 80.0-120 06/19/2023 13:37 WG2080288
(S) 4-Bromofluorobenzene 102 77.0-126 06/19/2023 13:37 WG2080288
(S) 1,2-Dichloroethane-d4 93.6 70.0-130 06/19/2023 13:37 WG2080288
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 18 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 18 of 36
SAMPLE RESULTS - 08
L1625719
WSW-3
Collected date/time: 06/12/23 13:50
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 06/19/2023 13:58 WG2080288
Acrolein U 2.54 50.0 1 06/19/2023 13:58 WG2080288
Acrylonitrile U 0.671 10.0 1 06/19/2023 13:58 WG2080288
Benzene U 0.0941 1.00 1 06/19/2023 13:58 WG2080288
Bromobenzene U 0.118 1.00 1 06/19/2023 13:58 WG2080288
Bromodichloromethane U 0.136 1.00 1 06/19/2023 13:58 WG2080288
Bromoform U 0.129 1.00 1 06/19/2023 13:58 WG2080288
Bromomethane U 0.605 5.00 1 06/19/2023 13:58 WG2080288
n-Butylbenzene U 0.157 1.00 1 06/19/2023 13:58 WG2080288
sec-Butylbenzene U 0.125 1.00 1 06/19/2023 13:58 WG2080288
tert-Butylbenzene U 0.127 1.00 1 06/19/2023 13:58 WG2080288
Carbon tetrachloride U 0.128 1.00 1 06/19/2023 13:58 WG2080288
Chlorobenzene U 0.116 1.00 1 06/19/2023 13:58 WG2080288
Chlorodibromomethane U 0.140 1.00 1 06/19/2023 13:58 WG2080288
Chloroethane U 0.192 5.00 1 06/19/2023 13:58 WG2080288
Chloroform U 0.111 5.00 1 06/19/2023 13:58 WG2080288
Chloromethane U 0.960 2.50 1 06/19/2023 13:58 WG2080288
2-Chlorotoluene U 0.106 1.00 1 06/19/2023 13:58 WG2080288
4-Chlorotoluene U 0.114 1.00 1 06/19/2023 13:58 WG2080288
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/19/2023 13:58 WG2080288
1,2-Dibromoethane U 0.126 1.00 1 06/19/2023 13:58 WG2080288
Dibromomethane U 0.122 1.00 1 06/19/2023 13:58 WG2080288
1,2-Dichlorobenzene U 0.107 1.00 1 06/19/2023 13:58 WG2080288
1,3-Dichlorobenzene U 0.110 1.00 1 06/19/2023 13:58 WG2080288
1,4-Dichlorobenzene U 0.120 1.00 1 06/19/2023 13:58 WG2080288
Dichlorodifluoromethane U 0.374 5.00 1 06/19/2023 13:58 WG2080288
1,1-Dichloroethane U 0.100 1.00 1 06/19/2023 13:58 WG2080288
1,2-Dichloroethane 0.238 J 0.0819 1.00 1 06/19/2023 13:58 WG2080288
1,1-Dichloroethene U 0.188 1.00 1 06/19/2023 13:58 WG2080288
cis-1,2-Dichloroethene U 0.126 1.00 1 06/19/2023 13:58 WG2080288
trans-1,2-Dichloroethene U 0.149 1.00 1 06/19/2023 13:58 WG2080288
1,2-Dichloropropane U 0.149 1.00 1 06/19/2023 13:58 WG2080288
1,1-Dichloropropene U 0.142 1.00 1 06/19/2023 13:58 WG2080288
1,3-Dichloropropane U 0.110 1.00 1 06/19/2023 13:58 WG2080288
2,2-Dichloropropane U 0.161 1.00 1 06/19/2023 13:58 WG2080288
Di-isopropyl ether U 0.105 1.00 1 06/19/2023 13:58 WG2080288
Ethylbenzene U 0.137 1.00 1 06/19/2023 13:58 WG2080288
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/19/2023 13:58 WG2080288
Isopropylbenzene U 0.105 1.00 1 06/19/2023 13:58 WG2080288
p-Isopropyltoluene U 0.120 1.00 1 06/19/2023 13:58 WG2080288
2-Butanone (MEK)U 1.19 10.0 1 06/19/2023 13:58 WG2080288
Methylene Chloride U 0.430 5.00 1 06/19/2023 13:58 WG2080288
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 06/19/2023 13:58 WG2080288
Methyl tert-butyl ether U 0.101 1.00 1 06/19/2023 13:58 WG2080288
Naphthalene U 1.00 5.00 1 06/19/2023 13:58 WG2080288
n-Propylbenzene U 0.0993 1.00 1 06/19/2023 13:58 WG2080288
Styrene U 0.118 1.00 1 06/19/2023 13:58 WG2080288
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/19/2023 13:58 WG2080288
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/19/2023 13:58 WG2080288
Tetrachloroethene 1.92 0.300 1.00 1 06/19/2023 13:58 WG2080288
Toluene U 0.278 1.00 1 06/19/2023 13:58 WG2080288
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/19/2023 13:58 WG2080288
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/19/2023 13:58 WG2080288
1,1,1-Trichloroethane U 0.149 1.00 1 06/19/2023 13:58 WG2080288
1,1,2-Trichloroethane U 0.158 1.00 1 06/19/2023 13:58 WG2080288
Trichloroethene U 0.190 1.00 1 06/19/2023 13:58 WG2080288
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 19 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 19 of 36
SAMPLE RESULTS - 08
L1625719
WSW-3
Collected date/time: 06/12/23 13:50
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 06/19/2023 13:58 WG2080288
1,2,3-Trichloropropane U 0.237 2.50 1 06/19/2023 13:58 WG2080288
1,2,4-Trimethylbenzene U 0.322 1.00 1 06/19/2023 13:58 WG2080288
1,3,5-Trimethylbenzene U 0.104 1.00 1 06/19/2023 13:58 WG2080288
Vinyl chloride U 0.234 1.00 1 06/19/2023 13:58 WG2080288
o-Xylene U 0.174 1.00 1 06/19/2023 13:58 WG2080288
m&p-Xylenes U 0.430 2.00 1 06/19/2023 13:58 WG2080288
(S) Toluene-d8 107 80.0-120 06/19/2023 13:58 WG2080288
(S) 4-Bromofluorobenzene 101 77.0-126 06/19/2023 13:58 WG2080288
(S) 1,2-Dichloroethane-d4 88.4 70.0-130 06/19/2023 13:58 WG2080288
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/22/23 18:58 20 of 36
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1625719 06/23/23 09:07 20 of 36
QUALITY CONTROL SUMMARYWG2079572
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-01
Method Blank (MB)
(MB) R3938782-2 06/17/23 09:39
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
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
2-Butanone (MEK)U 1.19 10.0
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2079572
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-01
Method Blank (MB)
(MB) R3938782-2 06/17/23 09:39
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
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
(S) Toluene-d8 110 80.0-120
(S) 4-Bromofluorobenzene 103 77.0-126
(S) 1,2-Dichloroethane-d4 102 70.0-130
Laboratory Control Sample (LCS)
(LCS) R3938782-1 06/17/23 08:56
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Acetone 25.0 29.4 118 19.0-160
Acrolein 25.0 24.1 96.4 10.0-160
Acrylonitrile 25.0 24.2 96.8 55.0-149
Bromobenzene 5.00 4.77 95.4 73.0-121
Bromodichloromethane 5.00 5.14 103 75.0-120
Bromoform 5.00 4.59 91.8 68.0-132
Bromomethane 5.00 3.79 75.8 10.0-160
n-Butylbenzene 5.00 4.71 94.2 73.0-125
sec-Butylbenzene 5.00 5.12 102 75.0-125
tert-Butylbenzene 5.00 5.22 104 76.0-124
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2079572
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-01
Laboratory Control Sample (LCS)
(LCS) R3938782-1 06/17/23 08:56
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Carbon tetrachloride 5.00 5.45 109 68.0-126
Chlorobenzene 5.00 5.03 101 80.0-121
Chlorodibromomethane 5.00 4.51 90.2 77.0-125
Chloroethane 5.00 5.17 103 47.0-150
Chloroform 5.00 5.02 100 73.0-120
Chloromethane 5.00 5.12 102 41.0-142
2-Chlorotoluene 5.00 4.79 95.8 76.0-123
4-Chlorotoluene 5.00 4.77 95.4 75.0-122
1,2-Dibromo-3-Chloropropane 5.00 4.43 88.6 58.0-134
1,2-Dibromoethane 5.00 4.96 99.2 80.0-122
Dibromomethane 5.00 5.15 103 80.0-120
1,2-Dichlorobenzene 5.00 4.92 98.4 79.0-121
1,3-Dichlorobenzene 5.00 4.68 93.6 79.0-120
1,4-Dichlorobenzene 5.00 4.58 91.6 79.0-120
Dichlorodifluoromethane 5.00 5.66 113 51.0-149
1,1-Dichloroethane 5.00 5.15 103 70.0-126
1,2-Dichloroethane 5.00 4.93 98.6 70.0-128
1,1-Dichloroethene 5.00 5.52 110 71.0-124
cis-1,2-Dichloroethene 5.00 4.95 99.0 73.0-120
trans-1,2-Dichloroethene 5.00 5.38 108 73.0-120
1,2-Dichloropropane 5.00 4.84 96.8 77.0-125
1,1-Dichloropropene 5.00 5.54 111 74.0-126
1,3-Dichloropropane 5.00 4.94 98.8 80.0-120
2,2-Dichloropropane 5.00 4.89 97.8 58.0-130
Di-isopropyl ether 5.00 5.39 108 58.0-138
Ethylbenzene 5.00 4.90 98.0 79.0-123
Hexachloro-1,3-butadiene 5.00 4.94 98.8 54.0-138
Isopropylbenzene 5.00 5.09 102 76.0-127
p-Isopropyltoluene 5.00 5.27 105 76.0-125
2-Butanone (MEK)25.0 28.3 113 44.0-160
Methylene Chloride 5.00 5.00 100 67.0-120
4-Methyl-2-pentanone (MIBK)25.0 26.5 106 68.0-142
Methyl tert-butyl ether 5.00 5.05 101 68.0-125
Naphthalene 5.00 3.60 72.0 54.0-135
n-Propylbenzene 5.00 5.15 103 77.0-124
Styrene 5.00 4.54 90.8 73.0-130
1,1,1,2-Tetrachloroethane 5.00 4.57 91.4 75.0-125
1,1,2,2-Tetrachloroethane 5.00 4.73 94.6 65.0-130
Tetrachloroethene 5.00 5.18 104 72.0-132
Toluene 5.00 5.04 101 79.0-120
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2079572
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-01
Laboratory Control Sample (LCS)
(LCS) R3938782-1 06/17/23 08:56
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
1,2,3-Trichlorobenzene 5.00 4.51 90.2 50.0-138
1,2,4-Trichlorobenzene 5.00 4.46 89.2 57.0-137
1,1,1-Trichloroethane 5.00 5.28 106 73.0-124
1,1,2-Trichloroethane 5.00 5.09 102 80.0-120
Trichloroethene 5.00 5.50 110 78.0-124
Trichlorofluoromethane 5.00 5.54 111 59.0-147
1,2,3-Trichloropropane 5.00 5.37 107 73.0-130
1,2,4-Trimethylbenzene 5.00 5.06 101 76.0-121
1,3,5-Trimethylbenzene 5.00 4.96 99.2 76.0-122
Vinyl chloride 5.00 5.45 109 67.0-131
(S) Toluene-d8 108 80.0-120
(S) 4-Bromofluorobenzene 104 77.0-126
(S) 1,2-Dichloroethane-d4 103 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2080288
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-02,03,04,05,07,08
Method Blank (MB)
(MB) R3939394-3 06/19/23 10:48
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 SUMMARYWG2080288
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-02,03,04,05,07,08
Method Blank (MB)
(MB) R3939394-3 06/19/23 10:48
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-Xylenes U 0.430 2.00
(S) Toluene-d8 106 80.0-120
(S) 4-Bromofluorobenzene 99.4 77.0-126
(S) 1,2-Dichloroethane-d4 91.6 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3939394-1 06/19/23 09:47 • (LCSD) R3939394-2 06/19/23 10:07
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 23.2 22.7 92.8 90.8 19.0-160 2.18 27
Acrolein 25.0 21.8 21.5 87.2 86.0 10.0-160 1.39 26
Acrylonitrile 25.0 23.3 22.6 93.2 90.4 55.0-149 3.05 20
Benzene 5.00 4.92 4.86 98.4 97.2 70.0-123 1.23 20
Bromobenzene 5.00 5.30 4.90 106 98.0 73.0-121 7.84 20
Bromodichloromethane 5.00 5.10 5.00 102 100 75.0-120 1.98 20
Bromoform 5.00 5.40 4.91 108 98.2 68.0-132 9.51 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2080288
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-02,03,04,05,07,08
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3939394-1 06/19/23 09:47 • (LCSD) R3939394-2 06/19/23 10:07
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 5.08 4.92 102 98.4 10.0-160 3.20 25
n-Butylbenzene 5.00 5.50 5.27 110 105 73.0-125 4.27 20
sec-Butylbenzene 5.00 5.38 5.27 108 105 75.0-125 2.07 20
tert-Butylbenzene 5.00 5.40 5.36 108 107 76.0-124 0.744 20
Carbon tetrachloride 5.00 5.29 5.33 106 107 68.0-126 0.753 20
Chlorobenzene 5.00 5.32 5.29 106 106 80.0-121 0.566 20
Chlorodibromomethane 5.00 5.34 5.21 107 104 77.0-125 2.46 20
Chloroethane 5.00 6.35 6.06 127 121 47.0-150 4.67 20
Chloroform 5.00 4.94 5.07 98.8 101 73.0-120 2.60 20
Chloromethane 5.00 3.97 3.94 79.4 78.8 41.0-142 0.759 20
2-Chlorotoluene 5.00 5.03 5.04 101 101 76.0-123 0.199 20
4-Chlorotoluene 5.00 4.99 5.19 99.8 104 75.0-122 3.93 20
1,2-Dibromo-3-Chloropropane 5.00 5.39 5.07 108 101 58.0-134 6.12 20
1,2-Dibromoethane 5.00 5.39 5.37 108 107 80.0-122 0.372 20
Dibromomethane 5.00 5.23 4.99 105 99.8 80.0-120 4.70 20
1,2-Dichlorobenzene 5.00 5.58 5.51 112 110 79.0-121 1.26 20
1,3-Dichlorobenzene 5.00 5.33 5.27 107 105 79.0-120 1.13 20
1,4-Dichlorobenzene 5.00 5.07 4.94 101 98.8 79.0-120 2.60 20
Dichlorodifluoromethane 5.00 5.84 5.39 117 108 51.0-149 8.01 20
1,1-Dichloroethane 5.00 4.86 4.79 97.2 95.8 70.0-126 1.45 20
1,2-Dichloroethane 5.00 4.76 4.90 95.2 98.0 70.0-128 2.90 20
1,1-Dichloroethene 5.00 5.22 4.95 104 99.0 71.0-124 5.31 20
cis-1,2-Dichloroethene 5.00 5.21 4.89 104 97.8 73.0-120 6.34 20
trans-1,2-Dichloroethene 5.00 4.94 4.88 98.8 97.6 73.0-120 1.22 20
1,2-Dichloropropane 5.00 4.94 5.03 98.8 101 77.0-125 1.81 20
1,1-Dichloropropene 5.00 5.22 4.89 104 97.8 74.0-126 6.53 20
1,3-Dichloropropane 5.00 5.49 5.14 110 103 80.0-120 6.59 20
2,2-Dichloropropane 5.00 5.22 5.18 104 104 58.0-130 0.769 20
Di-isopropyl ether 5.00 4.24 4.27 84.8 85.4 58.0-138 0.705 20
Ethylbenzene 5.00 5.32 5.10 106 102 79.0-123 4.22 20
Hexachloro-1,3-butadiene 5.00 5.44 5.65 109 113 54.0-138 3.79 20
Isopropylbenzene 5.00 5.22 5.22 104 104 76.0-127 0.000 20
p-Isopropyltoluene 5.00 5.09 5.12 102 102 76.0-125 0.588 20
2-Butanone (MEK)25.0 23.8 23.3 95.2 93.2 44.0-160 2.12 20
Methylene Chloride 5.00 4.97 4.80 99.4 96.0 67.0-120 3.48 20
4-Methyl-2-pentanone (MIBK)25.0 25.1 24.2 100 96.8 68.0-142 3.65 20
Methyl tert-butyl ether 5.00 5.13 4.98 103 99.6 68.0-125 2.97 20
Naphthalene 5.00 5.19 5.05 104 101 54.0-135 2.73 20
n-Propylbenzene 5.00 5.35 5.18 107 104 77.0-124 3.23 20
Styrene 5.00 4.89 4.94 97.8 98.8 73.0-130 1.02 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2080288
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-02,03,04,05,07,08
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3939394-1 06/19/23 09:47 • (LCSD) R3939394-2 06/19/23 10:07
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 5.51 5.26 110 105 75.0-125 4.64 20
1,1,2,2-Tetrachloroethane 5.00 5.49 5.19 110 104 65.0-130 5.62 20
Tetrachloroethene 5.00 5.40 5.26 108 105 72.0-132 2.63 20
Toluene 5.00 5.02 5.09 100 102 79.0-120 1.38 20
1,2,3-Trichlorobenzene 5.00 5.62 5.03 112 101 50.0-138 11.1 20
1,2,4-Trichlorobenzene 5.00 5.99 5.54 120 111 57.0-137 7.81 20
1,1,1-Trichloroethane 5.00 5.05 5.12 101 102 73.0-124 1.38 20
1,1,2-Trichloroethane 5.00 5.52 5.09 110 102 80.0-120 8.11 20
Trichloroethene 5.00 5.15 5.01 103 100 78.0-124 2.76 20
Trichlorofluoromethane 5.00 6.35 6.32 127 126 59.0-147 0.474 20
1,2,3-Trichloropropane 5.00 5.37 5.29 107 106 73.0-130 1.50 20
1,2,4-Trimethylbenzene 5.00 5.06 5.16 101 103 76.0-121 1.96 20
1,3,5-Trimethylbenzene 5.00 5.07 4.93 101 98.6 76.0-122 2.80 20
Vinyl chloride 5.00 6.21 6.16 124 123 67.0-131 0.808 20
o-Xylene 5.00 5.15 4.92 103 98.4 80.0-122 4.57 20
m&p-Xylenes 10.0 10.3 10.0 103 100 80.0-122 2.96 20
(S) Toluene-d8 102 103 80.0-120
(S) 4-Bromofluorobenzene 100 97.6 77.0-126
(S) 1,2-Dichloroethane-d4 89.8 95.8 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2081057
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-01
Method Blank (MB)
(MB) R3940012-2 06/21/23 07:14
MB Result MB Qualifier MB MDL MB RDL
Analyte ug/l ug/l ug/l
Benzene U 0.0941 1.00
o-Xylene U 0.174 1.00
m&p-Xylenes U 0.430 2.00
(S) Toluene-d8 104 80.0-120
(S) 4-Bromofluorobenzene 92.8 77.0-126
(S) 1,2-Dichloroethane-d4 107 70.0-130
Laboratory Control Sample (LCS)
(LCS) R3940012-1 06/21/23 06:33
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Benzene 5.00 5.36 107 70.0-123
o-Xylene 5.00 4.78 95.6 80.0-122
m&p-Xylenes 10.0 9.60 96.0 80.0-122
(S) Toluene-d8 103 80.0-120
(S) 4-Bromofluorobenzene 95.3 77.0-126
(S) 1,2-Dichloroethane-d4 109 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2081917
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-02,03,05,06
Method Blank (MB)
(MB) R3939676-2 06/21/23 14:52
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 SUMMARYWG2081917
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-02,03,05,06
Method Blank (MB)
(MB) R3939676-2 06/21/23 14:52
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-Xylenes U 0.430 2.00
(S) Toluene-d8 118 80.0-120
(S) 4-Bromofluorobenzene 93.8 77.0-126
(S) 1,2-Dichloroethane-d4 124 70.0-130
Laboratory Control Sample (LCS)
(LCS) R3939676-1 06/21/23 13:50
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Acetone 25.0 22.1 88.4 19.0-160
Acrolein 25.0 28.7 115 10.0-160
Acrylonitrile 25.0 34.9 140 55.0-149
Benzene 5.00 5.64 113 70.0-123
Bromobenzene 5.00 5.64 113 73.0-121
Bromodichloromethane 5.00 5.52 110 75.0-120
Bromoform 5.00 4.47 89.4 68.0-132
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2081917
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-02,03,05,06
Laboratory Control Sample (LCS)
(LCS) R3939676-1 06/21/23 13:50
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
Bromomethane 5.00 3.11 62.2 10.0-160
n-Butylbenzene 5.00 5.41 108 73.0-125
sec-Butylbenzene 5.00 5.40 108 75.0-125
tert-Butylbenzene 5.00 5.42 108 76.0-124
Carbon tetrachloride 5.00 6.18 124 68.0-126
Chlorobenzene 5.00 5.37 107 80.0-121
Chlorodibromomethane 5.00 5.26 105 77.0-125
Chloroethane 5.00 4.40 88.0 47.0-150
Chloroform 5.00 5.60 112 73.0-120
Chloromethane 5.00 6.75 135 41.0-142
2-Chlorotoluene 5.00 5.61 112 76.0-123
4-Chlorotoluene 5.00 5.79 116 75.0-122
1,2-Dibromo-3-Chloropropane 5.00 5.55 111 58.0-134
1,2-Dibromoethane 5.00 4.92 98.4 80.0-122
Dibromomethane 5.00 5.18 104 80.0-120
1,2-Dichlorobenzene 5.00 5.43 109 79.0-121
1,3-Dichlorobenzene 5.00 5.32 106 79.0-120
1,4-Dichlorobenzene 5.00 5.21 104 79.0-120
Dichlorodifluoromethane 5.00 5.66 113 51.0-149
1,1-Dichloroethane 5.00 6.33 127 70.0-126 J4
1,2-Dichloroethane 5.00 6.08 122 70.0-128
1,1-Dichloroethene 5.00 5.45 109 71.0-124
cis-1,2-Dichloroethene 5.00 4.97 99.4 73.0-120
trans-1,2-Dichloroethene 5.00 5.70 114 73.0-120
1,2-Dichloropropane 5.00 6.36 127 77.0-125 J4
1,1-Dichloropropene 5.00 5.51 110 74.0-126
1,3-Dichloropropane 5.00 5.50 110 80.0-120
2,2-Dichloropropane 5.00 5.90 118 58.0-130
Di-isopropyl ether 5.00 6.84 137 58.0-138
Ethylbenzene 5.00 5.32 106 79.0-123
Hexachloro-1,3-butadiene 5.00 6.65 133 54.0-138
Isopropylbenzene 5.00 4.93 98.6 76.0-127
p-Isopropyltoluene 5.00 5.44 109 76.0-125
2-Butanone (MEK)25.0 28.8 115 44.0-160
Methylene Chloride 5.00 5.47 109 67.0-120
4-Methyl-2-pentanone (MIBK)25.0 35.8 143 68.0-142 J4
Methyl tert-butyl ether 5.00 5.56 111 68.0-125
Naphthalene 5.00 4.99 99.8 54.0-135
n-Propylbenzene 5.00 5.49 110 77.0-124
Styrene 5.00 4.93 98.6 73.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2081917
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1625719-02,03,05,06
Laboratory Control Sample (LCS)
(LCS) R3939676-1 06/21/23 13:50
Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier
Analyte ug/l ug/l %%
1,1,1,2-Tetrachloroethane 5.00 5.31 106 75.0-125
1,1,2,2-Tetrachloroethane 5.00 5.06 101 65.0-130
Tetrachloroethene 5.00 5.75 115 72.0-132
Toluene 5.00 5.66 113 79.0-120
1,2,3-Trichlorobenzene 5.00 5.53 111 50.0-138
1,2,4-Trichlorobenzene 5.00 5.89 118 57.0-137
1,1,1-Trichloroethane 5.00 5.67 113 73.0-124
1,1,2-Trichloroethane 5.00 5.19 104 80.0-120
Trichloroethene 5.00 5.58 112 78.0-124
Trichlorofluoromethane 5.00 5.51 110 59.0-147
1,2,3-Trichloropropane 5.00 5.26 105 73.0-130
1,2,4-Trimethylbenzene 5.00 5.44 109 76.0-121
1,3,5-Trimethylbenzene 5.00 5.54 111 76.0-122
Vinyl chloride 5.00 5.13 103 67.0-131
o-Xylene 5.00 5.28 106 80.0-122
m&p-Xylenes 10.0 10.2 102 80.0-122
(S) Toluene-d8 115 80.0-120
(S) 4-Bromofluorobenzene 94.9 77.0-126
(S) 1,2-Dichloroethane-d4 125 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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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.
J4 The associated batch QC was outside the established quality control range for accuracy.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122
Alabama 40660 Nebraska NE-OS-15-05
Alaska 17-026 Nevada TN000032021-1
Arizona AZ0612 New Hampshire 2975
Arkansas 88-0469 New Jersey–NELAP TN002
California 2932 New Mexico ¹TN00003
Colorado TN00003 New York 11742
Connecticut PH-0197 North Carolina Env375
Florida E87487 North Carolina ¹DW21704
Georgia NELAP North Carolina ³41
Georgia ¹923 North Dakota R-140
Idaho TN00003 Ohio–VAP CL0069
Illinois 200008 Oklahoma 9915
Indiana C-TN-01 Oregon TN200002
Iowa 364 Pennsylvania 68-02979
Kansas E-10277 Rhode Island LAO00356
Kentucky ¹ ⁶KY90010 South Carolina 84004002
Kentucky ²16 South Dakota n/a
Louisiana AI30792 Tennessee ¹ ⁴2006
Louisiana LA018 Texas T104704245-20-18
Maine TN00003 Texas ⁵LAB0152
Maryland 324 Utah TN000032021-11
Massachusetts M-TN003 Vermont VT2006
Michigan 9958 Virginia 110033
Minnesota 047-999-395 Washington C847
Mississippi TN00003 West Virginia 233
Missouri 340 Wisconsin 998093910
Montana CERT0086 Wyoming A2LA
A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789
A2LA – ISO 17025 ⁵1461.02 DOD 1461.01
Canada 1461.01 USDA P330-15-00234
EPA–Crypto TN00003
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.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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