WS-9947_45123_CA_MRP_20230817_FINAL

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

August 17, 2023

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

Subject: Groundwater Monitoring Report
First S&L Property
2150 Highway 70
Mebane, Alamance County, North Carolina
NCDEQ Incident No. 45123
ATC Project No.: SLC4512303

Dear Mr. Chapman:

ATC Associates of North Carolina, P.C. (ATC) is submitting the enclosed Groundwater Monitoring Report for
the First S&L Property site. The report presents investigative procedures, field activities, and laboratory
analytical results for monitoring well installation, an aggressive-fluid vapor recovery (AVFR) event, and
groundwater sampling event conducted from April through May 2023.

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

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

Corinne Lally Gabriel Araos, P.E.
Project Scientist Senior Project Manager
Direct Line: 919-948-7379 Direct Line: 919-573-1205
Email: [e-mail] Email: [e-mail]

Attachments:
1. Groundwater Monitoring Report

Prepared for:

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

GROUNDWATER MONITORING REPORT
First S&L Property
2150 Highway 70
Mebane, Alamance County, North Carolina
Incident #45123

ATC Project No. SLC4512302

Prepared by:

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

Corinne Lally
Project Scientist
Direct Line: 919-948-7379
Email: [e-mail]

Gabriel Araos, P.E.
Senior Project Manager
Direct Line: 919-573-1205
Email: [e-mail]

August 17, 2023

First S&L Property
August 17, 2023
Page i

ATC Project No. SLC4512302 NCDEQ State Lead Program
Table of Contents
1.0 SITE IDENTIFICATION .......................................................................................................................... 1
2.0 EXECUTIVE SUMMARY ........................................................................................................................ 2
3.0 SITE DESCRIPTION .............................................................................................................................. 2
3.1 SITE CHARACTERIZATION .................................................................................................................................... 2
3.2 SITE BACKGROUND ............................................................................................................................................ 3
3.3 SITE AND REGIONAL GEOLOGY ............................................................................................................................. 4
3.4 SITE AND REGIONAL HYDROGEOLOGY.................................................................................................................... 4
4.0 MONITORING WELL INSTALLATION ACTIVITIES ................................................................................. 4
5.0 AGGRESSIVE FLUID VAPOR RECOVERY .............................................................................................. 4
6.0 GROUNDWATER ASSESSMENT ACTIVITIES .................................................................................. 5
6.1 GROUNDWATER LEVELS...................................................................................................................................... 5
6.2 GROUNDWATER QUALITY ................................................................................................................................... 5
7.0 CONCLUSIONS AND RECOMMENDATIONS .................................................................................... 6
8.0 LIMITATIONS .......................................................................................................................................... 6

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

FIGURES:
Figure 1 – Site Vicinity Map
Figure 2 – Site Map
Figure 3 – Potential Receptor Map
Figure 4 – Groundwater Elevation Contour Map
Figure 5 – Groundwater Analytical Concentration Map

APPENDICES:
Appendix A – Conceptual Site Model
Appendix B – Field Notes
Appendix C – Soil Boring Log and Monitoring Well Construction Record
Appendix D – Site Photographs
Appendix E – Waste Disposal Manifest
Appendix F – Laboratory Analytical Results

First S&L Property
August 17, 2023
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ATC Project No. SLC4512302 NCDEQ State Lead Program

2.0 EXECUTIVE SUMMARY

ATC Associates of North Carolina, P.C. (ATC) has completed a Groundwater Monitoring Report for the
First S&L Property site. This report documents the installation of MW-4, an AVFR event, and groundwater
assessment activities conducted at the site between April 24 and May 31, 2023. The activities were
performed based on the May 16, 2023, Task Authorization (TA-03) by the Trust Fund Branch of the
Underground Storage Tank (UST) Section, Division of Waste Management, North Carolina Department of
Environmental Quality (NCDEQ). The work is being performed as part of State Lead Contract #N122019A
between NCDEQ and ATC.

The former UST system at the 2150 Highway 70 property consisted of three 1,000-gallon gasoline USTs
and associated piping and dispensers. The former gasoline service station structure was demolished in
2020. The site was recently used as a commercial self-storage facility. According to historical information,
the site operated as gasoline service station until the 1960s when petroleum was reportedly last sold by the
facility. Three 1,000-gallon gasoline underground storage tanks (USTs) were removed from the site in April
2020. There are three monitoring wells (MW-1 through MW-4) associated with the site. There is one water
supply well (WSW-1) used for irrigation purposes located approximately 370 feet southwest of the site.
Municipal water is available to the site and vicinity.

On April 24, 2023, ATC personnel mobilized to the site to oversee the installation of one 45-foot
groundwater monitoring well (MW-4) to delineate the extent of light non-aqueous phase liquid (LNAPL). On
May 2, 2023, following well installation activities, ATC oversaw one eight-hour aggressive vapor fluid
recovery (AVFR) event performed on MW-1. Approximately three weeks later, on May 30, 2023, ATC
collected groundwater samples from MW-1, MW-2, MW-3, and MW-4. The laboratory analytical results
were compared to the 15A NCAC 02L .0202 groundwater quality standards (2L Standards) and the Gross
Contamination Levels (GCLs). Historical and recent site assessment activities indicate the following:

 The AFVR event performed on May 2, 2023, generated approximately 915 gallons of petroleum
impacted groundwater an approximately 0.26 gallons of petroleum impacted vapors. LNAPL was
not detected before or after the AFVR event;
 On May 30, 2023, site monitoring wells MW-1 through MW-4 were gauged and sampled. LNAPL
was not encountered during this event;
 Groundwater flow appears to flow toward the southwest;
 Ethylbenzene, isopropylbenzene, n-propylbenzene, 1,2,4-trimetylbenzene, and 1,3,5-
trimethylbenzene exceeded the 2L Standards in MW-1. The analytical results for MW-2, MW-3,
and MW-4 did not exceed the 2L Standards; and
 Benzene was detected in MW-1 at a concentration of 6,320 micrograms per liter (µg/L) exceeding
the GCLs.

The Conceptual Site Model is included in Appendix A. ATC recommends continual AFVR or Mobile Multi-
Phase Extraction (MMPE) events at the site to reduce the benzene concentrations below the GCLs and
achieve site closure.

3.0 SITE DESCRIPTION

3.1 SITE CHARACTERIZATION

The First S&L Property site is located at 2150 Highway 70 in Mebane, Alamance County, North Carolina.
The property is currently used as a commercial public storage facility named The Storage Unit LLC and is
owned by Mr. James Lee Wilson. The site consists of a single-story steel beam and metal structure located
along Highway 70. A site topographic map is provided in Figure 1 and a site map in Figure 2. The Site
Conceptual Model is included as Appendix A.

First S&L Property
August 17, 2023
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ATC Project No. SLC4512302 NCDEQ State Lead Program
3.2 SITE BACKGROUND

The former UST system at the 2150 Highway 70 property consisted of three 1,000-gallon gasoline USTs
and associated piping and dispensers. The former gasoline service station structure was demolished in
2020. The most recent landowner prior to The Storage Unit LLC was Wilson Homes, LLC. NCDEQ
determined that Wilson Homes, LLC, neither owned nor operated the former UST system. The UST
inspector for Alamance County, Michelle Sclafani, researched the history of the property and was not able
to determine a tank owner. The property was used for go-karts and possibly a convenience store named
Go-Kart in the 1960s, but the leased ended in 1964. There was no evidence that the tanks were used after
that date. Due to the age of the UST system, the responsible party is unknown. The site was referred to
the NCDEQ State Lead Program in February 2019.

In April 2020, Zebra Environmental and Industrial Services, Inc., (Zebra) removed the three USTs from the
site as documented in an April 24, 2020 UST Closure, 20 Day, and Initial Abatement Action Report
completed by Paragon Environmental Consultants, Inc., (Paragon). According to the report, one UST (T1)
was situated in a tank pit located immediately to the south of the former store building (west tank pit) and
two USTs (T2&T3) were situated in a tank pit located to the southeast of the former store building (east
tank pit). The former dispenser island was situated directly above UST (T1). The USTs were 42 inches in
diameter and 12 feet long. During closure activities, approximately 1,600-gallons of petroleum contact water
was removed from the USTs. Following a visual inspection, the tanks were determined to be in good
condition with minimal surface corrosion observed. Both groundwater and LNAPL were not encountered in
either tank pit. Petroleum odors were noted in the soils beneath the south end of the western tank pit. A
total of six soil samples were collected from beneath the former UST locations at depths of approximately
9 feet below grade surface (bgs). Two soil samples were collected were collected from beneath the former
product piping at depths of 2.5 feet bgs. Laboratory analysis of soil samples collected from the south end
of the west tank pit (TS-1) yielded a concentration of Total Petroleum Hydrocarbons (TPH) Gasoline Range
Organics (GRO) at 53.4 milligrams per kilograms (mg/kg) which exceeds the TPH GRO action level of 50
mg/kg. The remaining soil samples collected resulted in concentrations below detection limits. No
groundwater samples were collected during the closure assessment. In total, approximately 29.29 tons of
contaminated soils were removed from the area directly underneath the south end of the west tank pit. One
“Risk-Based” soil sample collected from west tank pit bottom (PB). Laboratory analysis of the soil sample
yielded concentrations of contaminants in excess of the Soil-to-Water Maximum Soil Contaminant
Concentrations (MSCCs).

On May 1, 2020, Paragon submitted a Limited Site Assessment (LSA) Report documenting the completion
of a receptor survey, installation of a monitoring well, and subsequent groundwater sampling event. One
North Carolina Type II groundwater monitoring well, MW-1, was installed at the site that is constructed of
Schedule 40 PVC screen (0.010-inch slots) from 35 to 20 feet bgs and 2-inch diameter, Schedule 40 PVC
riser to near land surface. Laboratory analysis of the groundwater samples collected from well MW-1,
yielded concentrations of contaminants greater than the applicable NCDEQ Groundwater Quality 2L
Standards. Benzene was listed at a concentration that also exceeded the applicable Gross Contaminant
Level (GCL). The receptor survey identified one water supply well used for irrigation purposes located 370
feet from the site. Public water supplies are available to all of the properties within a radius of 1,000 feet
from 2150 Highway 70. Table 1 presents the water supply well information and Figure 3 presents the
locations of the water supply wells.

On December 3, 2020, the current property owner (The Storage Unit LLC) signed State-Lead Acceptance
letter. A private utility locate was conducted on December 18, 2020, but due to the construction of the
storage unit structure and site grading, the site assessment activities were delayed until July 2021.

On July 17, 2021, ATC oversaw the installation of two on-site monitoring wells (MW-2 and MW-3) to confirm
the extent of the groundwater impacts and to confirm the groundwater flow direction. On June 20, 2021,
site monitoring wells MW-1 through MW-3 were gauged for depth of water. Groundwater samples collected
from monitoring wells MW-2 and MW-3 did not exceed the 2L Standards and/or GCLs. LNAPL was
detected in well MW-1 at a thickness of 0.05 feet. LNAPL had not been detected previously at the site.
First S&L Property
August 17, 2023
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ATC Project No. SLC4512302 NCDEQ State Lead Program

On August 16, 2022, site monitoring wells MW-1 through MW-3 were gauged for depth of water.
Approximately 0.19 feet of LNAPL was detected in well MW-1. The analytical results were compared to the
2L Standards and GCLs. No compounds were detected above the 2L Standards and/or GCLs.

3.3 SITE AND REGIONAL GEOLOGY

The site is located in the Carolina Slate Belt of the Piedmont Physiographic Region and is underlain by
metamorphosed granite bedrock of the late Proterozoic to Cambrian age. According to the United States
Department of Agriculture Web Soil Survey, the site is underlain by Cullen clay loam. Lithology encountered
at the site during previous assessment activities consisted of silt with minor amounts of clay to
approximately 35 feet bgs.

3.4 SITE AND REGIONAL HYDROGEOLOGY

The occurrence and movement of groundwater in the Piedmont is within two separate but interconnected
water-bearing zones. A shallow water-bearing zone occurs within the surficial soils and a deeper zone
occurs within the underlying bedrock. Groundwater in the shallow soil zone occurs in the interstitial pore
spaces between the grains comprising the surficial soils. Groundwater in this zone is typically unconfined.
Groundwater movement is generally lateral from recharge areas to small streams that serve as localized
discharge points. The occurrence and movement of groundwater in the underlying water-bearing zone
within the crystalline bedrock is controlled by secondary joints, fractures and faults within the bedrock. On
a regional scale, the direction of groundwater flow is typically from uplands to major streams and
groundwater sinks. Groundwater at the site was encountered at 28.31 feet bgs. Based on topography,
groundwater flows to the north.

4.0 MONITORING WELL INSTALLATION ACTIVITIES

On April 24, 2023, ATC oversaw the installation of one groundwater monitoring well (MW-4) to attempt to
delineate the existing light non-aqueous phase liquid (LNAPL) plume. The locations of the monitoring well
is indicated on Figure 2. ATC contracted with Geologic Exploration, Inc., (GEX), a North Carolina certified
well contractor, to install the well. Prior to well installation activities, the borehole was cleared of potential
underground utilities utilizing a hand auger to approximately 5 feet-bgs. The soil borings for MW-4 was
advanced using a Geoprobe® 7822DT track-mounted drill rig and hollow stem augers, to a total depth of
45 feet bgs. The well was constructed of 2-inch diameter, Schedule 40 PVC screen (0.010-inch slots) from
20 to 45 feet bgs. The well was completed with a 2-foot-by-2-foot concrete pack and 8-inch diameter well
vault, and capped with a lockable water-tight cap. Soil was logged continuously on the augers for lithological
characterization. A composite soil sample was collected every 5 feet for photoionization detection (PID)
screening. The field notes are included in Appendix B. The monitoring well construction record and boring
log are included as Appendix C. Site photographs are included in Appendix D.

5.0 AGGRESSIVE FLUID VAPOR RECOVERY
ATC supervised Eastern Environmental Management, LLC (Eastern) during one eight hour AFVR event on
May 2, 2023. Monitoring well MW-1 was used as the extraction point for the event. Prior to performing the
event, MW-1 was gauged for the possible presence of LNAPL and to record the groundwater elevation.
LNAPL was not detected in the well prior to the event. Monitoring well construction details and groundwater
elevation data from the AFVR event is included as Table 2. Field notes are included in Appendix B.
Photographs of the site and AFVR activities are included in Appendix D.

During AFVR activities, a liquid ring vacuum pump unit was plumbed to the designated extraction point,
and a drop “stinger” pipe extended into the well through an airtight seal at the top of the well casing (TOC)
and into the water column. Throughout the AFVR process, a cone of depression formed around a
First S&L Property
August 17, 2023
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ATC Project No. SLC4512302 NCDEQ State Lead Program
designated recovery point by drawing down the groundwater surface levels, thus causing impacted water
surrounding the recovery point to be extracted. Soil petroleum vapor within the cone of depression and the
overlying vadose zone were removed as vapor by air passing through the soil.

The AFVR event generated approximately 915 gallons of petroleum impacted groundwater. Field
parameters, including velocity, temperature, and volatile organic compound (VOC) concentrations were
recorded throughout the event. Based on the field readings, approximately 0.26 gallons of petroleum
impacted vapor were recovered during the event. The waste disposal manifest is included in Appendix E.
The AVFR emission calculations are included as Table 3.

6.0 GROUNDWATER ASSESSMENT ACTIVITIES

6.1 GROUNDWATER LEVELS

On May 30, 2023, site monitoring wells MW-1 through MW-4 were gauged for depth of water. LNAPL was
not encountered during this event. Depth to groundwater measurements ranged from 21.32 ft-toc in MW-4
to 26.74 ft-toc in MW-3. Monitoring well construction details and groundwater elevation data are
summarized in Table 2. Groundwater was determined to flow to the southwest. The Groundwater Elevation
Contour Map is included as Figure 4. Field notes from the sampling event are included in Appendix B.
Photographs of the monitoring well locations are included in Appendix D.

6.2 GROUNDWATER QUALITY

On May 30, 2023, groundwater samples were collected from monitoring wells MW-1, MW-2, MW-3, and
MW-4. Samples were collected in laboratory-approved containers, packed in ice and delivered under chain
of custody protocol to SGS North America Inc., in Scott, Louisiana for analyses. Groundwater samples were
analyzed for volatile organic compounds (VOCs) by Environmental Protection Agency (EPA) Method
6200B.

The analytical results were compared to the 2L Standards and GCLs. Ethylbenzene, isopropylbenzene, n-
propylbenzene, 1,2,4-trimetylbenzene, and 1,3,5-trimethylbenzene exceeded the 2L Standards in MW-1.
Benzene exceeded the GCL in MW-1. The analytical results for MW-2, MW-3, and MW-4 did not exceed
the 2L Standards. Monitoring well analytical results are included in Table 4. Historical monitoring well
analytical results are included as Table 5. Measured field parameters are summarized in Table 6. A
Groundwater Analytical Concentration Map depicting concentrations exceeding the 2L Standards is
included as Figure 5. The laboratory analytical report and chain-of-custody forms are included in Appendix
F.

As part of ATC’s quality assurance and quality control (QA and QC) measures, a data review of the
laboratory report was conducted. A field blank sample (FB-1) was collected by pouring containerizing
deionized (DI) water directly into sample containers during field activities. Analytical methods and target
compounds associated with the field blank samples remained consistent with those described previously.
Acetone, methylene chloride, and toluene were detected above laboratory method detection limits, but
below the laboratory reporting limits in the field blank sample. These reported constituents are common
laboratory contaminants are marked with “J-flags,” meaning the concentrations are estimates.

During the review, it was concluded that samples were received by the laboratory in acceptable condition
and properly preserved. Samples were analyzed within the correct holding times, and the 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. 1,2,3-trichlorobenzene was detected in the laboratory
method blank above the method detection limit, but below the laboratory reporting limits. The laboratory
fortified blank (LFB) and laboratory control sample (LCS) data results were also provided for each analytical
First S&L Property
August 17, 2023
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ATC Project No. SLC4512302 NCDEQ State Lead Program
method. Refer to the laboratory report in Appendix F 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.

7.0 CONCLUSIONS AND RECOMMENDATIONS

ATC Associates of North Carolina, P.C. (ATC) has completed a Groundwater Monitoring Report for the
First S&L Property site. This report documents the installation of MW-4, an AVFR event, and groundwater
assessment activities conducted at the site between April 24 and May 31, 2023. On April 24, 2023, ATC
personnel mobilized to the site to oversee the installation of one 45-foot groundwater monitoring well (MW-
4) to delineate the extent of light non-aqueous phase liquid (LNAPL). On May 2, 2023, following well
installation activities, ATC oversaw one eight-hour aggressive vapor fluid recovery (AVFR) event performed
on MW-1. Approximately three weeks later, on May 30, 2023, ATC collected groundwater samples from
MW-1, MW-2, MW-3, and MW-4. The laboratory analytical results were compared to the 15A NCAC 02L
.0202 groundwater quality standards (2L Standards) and the Gross Contamination Levels (GCLs).
Historical and recent site assessment activities indicate the following:

 The AFVR event performed on May 2, 2023, generated approximately 915 gallons of petroleum
impacted groundwater an approximately 0.26 gallons of petroleum impacted vapors. LNAPL was
not detected before or after the AFVR event;
 On May 30, 2023, site monitoring wells MW-1 through MW-4 were gauged and sampled. LNAPL
was not encountered during this event;
 Groundwater flow appears to flow toward the southwest;
 Ethylbenzene, isopropylbenzene, n-propylbenzene, 1,2,4-trimetylbenzene, and 1,3,5-
trimethylbenzene exceeded the 2L Standards in MW-1. The analytical results for MW-2, MW-3,
and MW-4 did not exceed the 2L Standards; and
 Benzene was detected in MW-1 at a concentration of 6,320 micrograms per liter (µg/L) exceeding
the GCLs.

ATC recommends continual AFVR or Mobile Multi-Phase Extraction (MMPE) events at the site to reduce
the benzene concentrations below the GCLs and achieve site closure.

8.0 LIMITATIONS

This report has been prepared for the exclusive use of the NCDEQ. The opinions included herein are based
on information obtained during the study, on our experience in accordance with currently accepted
hydrogeologic and engineering practices, and relevant regulatory guidelines at this time and location. Other
than this, no warranty is implied or intended.
First S&L Property

ATC Project No. SLC4512302 NCDEQ State Lead Program
TABLES
TABLE 1
WATER SUPPLY WELL INFORMATION
FIRST S&L PROPERTY
2150 US HIGHWAY 70
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #45123
Well ID Well Owner / Mailing Address Well Address Telephone
Number Well Use Method of
Identification
Previously Agreed
to Abandon
Distance from
Source Area (ft.)
Up or Down
Gradient Parcel ID #
WSW-01 Tabatha B. Hyder / 2255 US Highway
70, Mebane, North Carolina 27302 2255 US Highway 70 Unknown Irrigation Visual confirmation N/A 370 SW Down 160723
1. Only water supply wells located within 1,000 feet of the site are included.
2. Ownership information verified using Alamance County Geographic Information System website, table updated August 10, 2021.
Page 1 of 1
TABLE 2
MONITORING WELL CONSTRUCTION AND WATER ELEVATION DATA
FIRST S&L PROPERTY
2150 US HIGHWAY 70
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #45123
Well ID Date
Installed
Screened
Interval (ft
bgs)
Depth of
Well (ft bgs)
TOC
Elevation
(feet)
Date
Measured
Depth to
Groundwater
(feet)
Depth to LNAPL
(feet)
LNAPL
Thickness
(feet)
Groundwater
Elevation
(feet)
4/21/20 26.55 ----73.45
7/20/21 24.06 24.01 0.05 75.90
8/16/22 28.04 27.85 0.19 71.80
5/30/23 26.36 ----73.64
7/20/21 24.73 ----76.02
8/16/22 28.57 ----72.18
5/30/23 27.06 ----73.69
7/20/21 24.45 ----76.02
8/16/22 28.33 ----72.14
5/30/23 26.74 ----73.73
MW-4 4/24/2023 20-45 45 NM 5/30/23 21.32 ----N/A
2. -- = LNAPL not detected.
3. Corrected groundwater elevation = TOC Elevation - [DTW+(0.8581*LNAPL Thickness)]
4. TOC = Top of casing.
5. Monitoring well MW-1 is the site benchmark at 100.00 feet.
6. ft bgs = feet below ground surface.
MW-1 4/20/2020 24-39 39 100.00
1. LNAPL = Light non-aqueous phase liquid.
MW-3
100.75
100.47
MW-2 7/16/2021
7/16/2021
22-32
22-32
32
32
Page 1 of 1
TABLE 3
AFVR EMISSION CALCULATIONS
FIRST S&L PROPERTY
2150 US HIGHWAY 70
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #45123
Time Delta Time
(minute)
VOC
Concentration
(ppm)
Velocity
(feet/minute)
Temp
(˚F)
Relative
Humidity
(%)
Stack
Diameter
(inches)
Air Flow
(cfm)
Specific
Humidity
(lbW/lbDA)
Water
Vapor
(vol %)
Dry Basis
Air Flow
(dscfm)
Dry VOC
Concentration
(ppm)
Response
Factor
Corrected VOC
Concentration
(ppm)
Mass
Concentration
(mg/m3)
Mass
Concentration
(lb/ft3)
Mass
Removed
(lb)
7:15 0 590 53 75.1 85.1 6.0 10 0.015 0.023 10 604 1 604 3214 0.000201 0.03
7:30 15 958 49 74.3 88.1 6.0 10 0.016 0.025 9 983 1 983 5226 0.000326 0.05
7:45 15 1,205 55 88.1 92.1 6.0 11 0.027 0.041 10 1257 1 1257 6685 0.000417 0.06
8:00 15 1,144 52 100.9 100.0 6.0 10 0.044 0.066 9 1225 1 1225 6512 0.000407 0.05
8:15 15 974 56 114.7 100.0 6.0 11 0.069 0.100 9 1082 1 1082 5752 0.000359 0.05
8:30 15 1,293 57 124.5 100.0 6.0 11 0.093 0.130 9 1486 1 1486 7904 0.000493 0.07
8:45 15 1,264 60 133.6 100.0 6.0 12 0.124 0.166 9 1515 1 1515 8057 0.000503 0.07
9:00 15 1,201 68 139.4 99.7 6.0 13 0.149 0.193 9 1488 1 1488 7911 0.000494 0.14
9:30 30 1,114 59 148.1 100.0 6.0 12 0.198 0.241 8 1467 1 1467 7803 0.000487 0.11
10:00 30 1,070 75 150.9 100.0 6.0 15 0.217 0.258 9 1442 1 1442 7668 0.000479 0.14
10:30 30 996 67 153.9 100.0 6.0 13 0.240 0.278 8 1379 1 1379 7332 0.000458 0.11
11:00 30 974 68 147.8 100.0 6.0 13 0.196 0.239 9 1279 1 1279 6803 0.000425 0.11
11:30 30 975 38 144.9 100.0 6.0 7 0.178 0.222 5 1253 1 1253 6664 0.000416 0.06
12:00 30 1,008 68 150.4 100.0 6.0 13 0.214 0.255 9 1354 1 1354 7198 0.000449 0.12
12:30 30 980 64 150.2 100.0 6.0 13 0.212 0.254 8 1313 1 1313 6981 0.000436 0.11
13:00 30 1,028 64 156.2 100.0 6.0 13 0.260 0.294 8 1456 1 1456 7744 0.000483 0.11
13:30 30 812 63 157.3 100.0 6.0 12 0.270 0.302 7 1163 1 1163 6182 0.000386 0.09
14:00 30 921 65 158.2 100.0 6.0 13 0.279 0.309 8 1332 1 1332 7084 0.000442 0.10
14:30 30 987 64 158.9 100.0 6.0 13 0.256 0.291 8 1392 1 1392 7400 0.000462 0.11
15:00 30 1,021 71 161.3 100.0 6.0 14 0.310 0.332 8 1528 1 1528 8126 0.000507 0.12
1.64
Total Emissions in Gallons 0.26
Notes:
VOC = Volatile organic compounds measured using a photoionization detector (PID)
ppm = parts per million
cfm = cubic feet per minute
Air Flow= π*(Stack Diameter (in.)/12/2)2*Velocity
Specific Humidity = Data from psychrometric chart at measured temperature and relative humidity in pounds of water per pound of dry air (lbW/lbDA).
Water Vapor = % water vapor on a volume basis = (Specific Humidity / 18 lb-mole H2O) / [(1 / 28.84 lb-mole dry air) + (Specific Humidity / 18 lb-mole H2O)]
Dry Basis Air Flow = Flow volume on a dry basis at a standard temperature of 68˚F = (1-Water Vapor) (Air Flow) [528˚R / (Temperature+460)]
dscfm = dry standard cubic feet per minute
Dry VOC Concentration = [VOC Concentration / (1-Water Vapor)]
Response Factor = Response Factor of PID; 1 if response factor is unknown
Corrected VOC Concentration = Dry VOC Concentration x Response Factor
Mass Concentration (mg/m3) = Mass concentration VOC as gasoline dry basis at standard temperature = (Corrected VOC Concentration) (128 mg/mg-mole / 24.07 m3/mg-mole)
Mass Concentration (lb/ft3) = [Mass Concentration (mg/m3)] [(6.243 * 10-8)(lb/ft3)/(mg/m3)]
mg/m3 = milligrams per cubic meter
lb/ft3 = pounds per cubic foot
Mass Removed (lb) = [Mass Concentration (lb/ft3)] [Dry Basis Air Flow (dscfm)] [Time Interval (min)]
Grey shaded cells represent the highest value for specific humidity on the Munters Psychrometric Chart due to field readings exceeding the charts values
Total Emissions in Pounds
Page 1 of 1
TABLE 4
GROUNDWATER ANALYTICAL RESULTS
FIRST S&L PROPERTY
2150 US HIGHWAY 70
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #45123
WELL ID Date
Collected
BenzeneTolueneEthylbenzeneXylenes (Total)MTBENaphthaleneAcetoneChloroformDi-isopropyl ether2-HexanoneIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneMW-1 5/30/2023 6,320 401 J 1,920 <1,000 <500 <2,500 <25,000 <2,500 129 J <5,000 81.7 J 165 J 1,320 404 J
MW-2 5/30/2023 <1.00 <1.00 <1.00 <2.00 <1.00 <5.00 <50.0 <5.00 <1.00 <10.0 <1.00 <1.00 <1.00 <1.00
MW-3 5/30/2023 <1.0 <1.0 <1.0 <2.0 <1.0 <5.0 183 <5.00 <1.00 <10.0 <1.00 <1.00 <1.00 <1.00
MW-4 5/30/2023 <1.00 <1.00 <1.00 <2.00 <1.00 <5.00 12.5 J <5.00 <1.00 <10.0 <1.00 <1.00 <1.00 <1.00
1 600 600 500 20 6 6,000 70 70 40 70 70 400 400
5,000 260,000 80,000 50,000 20,000 6,000 6,000,000 5,900 70,000 40,000 30,500 26,100 28,500 24,100
Notes:
1. MTBE = Methyl Tertiary Butyl Ether.
2. IPE = Isopropyl Ether.
3. "<" or BDL = Not detected at or above the laboratory reporting limit or laboratory reporting limit.
4. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb).
5. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard).
6. GCL = Gross Contamination Level (Updated 1/21/2021).
7. LNAPL = Light non-aqueous phase liquid
8. J = Indicates an estimated value.
9. NA = Not Analyzed.
10. Values in italics indicate levels above GCLs.
11. NE = Not Established.
GCL
2L Standard
ANALYTICAL METHOD EPA METHOD 6200B
Page 1 of 1
TABLE 5
HISTORICAL GROUNDWATER ANALYTICAL RESULTS
FIRST S&L PROPERTY
2150 US HIGHWAY 70
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #45123
6020B
WELL ID Date
Collected
BenzeneTolueneEthylbenzeneXylenes (Total)MTBENaphthaleneIsopropylbenzenen-Propylbenzene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneLeadC5-C8 AliphaticsC9-C18 AliphaticsC9-C22 Aromatics4/21/2020 6,390 2,370 2,990 15,860 <250 1,010 300 460 1,570 1,550 <10.0 25,200 28,100 <10,000
7/20/2021
8/16/2022
5/30/2023 6,320 401 J 1,920 <1,000 <500 <2,500 81.7 J 165 J 1,320 404 J NA NA NA NA
7/20/2021 <0.50 2.9 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 3.6 <100 <100 <100
8/16/2022 <1.00 <1.00 <1.00 <3.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
5/30/2023 <1.00 <1.00 <1.00 <2.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
7/20/2021 <0.50 0.43 J <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 2.6 <100 <100 <100
8/16/2022 <1.00 <1.00 <1.00 <3.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
5/30/2023 <1.0 <1.0 <1.0 <2.0 <1.0 <5.0 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
MW-4 5/30/2023 <1.00 <1.00 <1.00 <2.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 NA NA NA NA
1 600 600 500 20 6 70 70 400 400 15 400 700 200
5,000 260,000 80,000 50,000 20,000 6,000 30,500 26,100 28,500 24,100 15,000 NE NE NE
Notes:
1. MTBE = Methyl Tertiary Butyl Ether.
2. IPE = Isopropyl Ether.
3. "<" or BDL = Not detected at or above the laboratory reporting limit or laboratory reporting limit.
4. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb).
5. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard).
6. GCL = Gross Contamination Level (Updated 1/21/2021).
7. LNAPL = Light non-aqueous phase liquid
8. J = Indicates an estimated value.
9. NA = Not Analyzed.
10. Values in italics indicate levels above GCLs.
11. NE = Not Established.
2L Standard
GCL
ANALYTICAL METHOD EPA METHOD 6200B MADEP VPH and EPH
MW-1 Not Sampled - LNAPL
Not Sampled - LNAPL
MW-2
MW-3
Page 1 of 1
TABLE 6
WATER QUALITY PARAMETERS
FIRST S&L PROPERTY
2150 US HIGHWAY 70
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #45123
7/20/2021
8/16/2022
5/30/2023
7/20/2021 21.10 5.94 160 6.34 73.0
8/16/2022 19.70 1.44 111.3 5.38 295.2
5/30/2023 21.56 1.87 188.0 0.33 81.0
7/20/2021 20.05 8.08 133 6.61 76.3
8/16/2022 18.50 3.77 117.6 5.99 255.8
5/30/2023 19.24 6.61 119 2.78 82.3
MW-4 5/30/2023
Notes:
1. oC = Degrees Celsius.
2. mg/L = Milligrams per Liter.
3. LNAPL = Light non-aqueous phase liquid
4. µs/cm = Micro Siemens per Centimeter.
5. SU = Standard Units.
6. ORP = Oxidation Reduction Potential.
7. mV = Millivolts.
MW-2 Dissolved Oxygen (mg/L)Conductivity (µs/cm)pH (SU)ORP (mV)Not Measured - Strong odor and sheen
Not Measured - Strong odor and sheen
Not Measured - LNAPL
WELL ID
Not Measured - LNAPL
MW-3
Date
Collected
Temperature (oC)MW-1
Page 1 of 1
First S&L Property

ATC Project No. SLC4512302 NCDEQ State Lead Program
FIGURES

VICINITY MAP
1"= 2,000'
1
Project Number:
Date:Scale:
Drawing File:
Figure:
App'd By:
Drn. By:
Ckd. By:
N
H:\2021\OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\FIRST S&L\SLC4512301-VIC.DWG, FIG109/13/2022
SEE LOWER LEFT
FIRST S&L PROPERTY
2450 EAST MAIN STREET
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #45123
SLC4512302 DH
NK
NK
EAST MAIN STREETFORMERSITE BUILDINGLEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINESCALE: 1" = 20'05101520NAREA OF EXCAVATION(3) FORMER 1,000 GAL.GASOLINE USTsFORMERDISPENSERISLANDMW-1MW-1MONITORING WELLWell IdentificationMW-2MW-3T1T2T3SB-1SB-1SOIL BORINGBoring IdentificationMW-4Figure: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\FIRST S&L\SLC4512302-SITE.DWG, FIG2
SITE MAP06/13/2023SEE LOWER LEFTFIRST S&L PROPERTY
2150 EAST MAIN STREET
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCEDENT #45123
SLC4512302AS SHOWNMS
CL2NOTES:
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
WSW-1EAST MAIN STREET50SCALE: 1" = 200'0100150200N500 FT.RADIUS1,000 FT.RADIUSSITELEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEWATER SUPPLY WELLWell IdentificationWSW-1Figure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2021\OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\FIRST S&L\SLC4512301-WSW.DWG, FIG3
POTENTIAL RECEPTOR MAP09/13/2022SEE LOWER LEFTFIRST S&L PROPERTY
2150 EAST MAIN STREET
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCEDENT #45123
SLC4512302AS SHOWNDH
NK3NOTES:
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
LEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEAREA OF EXCAVATION73.65GROUNDWATER ELEVATION CONTOUR(DASHED WHERE INFERRED) (ft)GROUNDWATER FLOW DIRECTIONMW-273.64MONITORING WELLWell IdentificationRelative Groundwater Elevation (ft)MW-4NSEAST MAIN STREETFORMERSITE BUILDING(3) FORMER 1,000 GAL.GASOLINE USTsFORMERDISPENSERISLANDMW-1MW-2T1T2T373.7373.6973.64MW-3SCALE: 1" = 20'05101520N73.6573.70Figure: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\FIRST S&L\SLC4512302-POT.DWG, FIG4
GROUNDWATER ELEVATION CONTOUR MAP06/13/2023SEE LOWER LEFTFIRST S&L PROPERTY
2150 EAST MAIN STREET
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCEDENT #45123
SLC4512302AS SHOWNMS
CL4NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater measured on May 30, 2023.
3.NS = Not surveyed
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
EAST MAIN STREETFORMERSITE BUILDINGLEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINESCALE: 1" = 20'05101520NAREA OF EXCAVATION(3) FORMER 1,000 GAL.GASOLINE USTsFORMERDISPENSERISLANDMW-1MW-1MONITORING WELLWell IdentificationMW-2T1T2T3MW-3MW-4Figure: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\FIRST S&L\SLC4512302-GW.DWG, FIG5
GOURNDWATER ANALYTICAL CONCENTRATION MAP06/13/2023SEE LOWER LEFTFIRST S&L PROPERTY
2150 EAST MAIN STREET
MEBANE, ALAMANCE COUNTY, NORTH CAROLINA
NCDEQ INCEDENT #45123
SLC4512302AS SHOWNMS
CL5NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater samples were collected on May 30, 2023.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
First S&L Property

ATC Project No. SLC4512302 NCDEQ State Lead Program
APPENDIX A

CONCEPTUAL SITE MODEL

Site Name: First S&L Properties Date:6/16/2023
Property Owner:The Storage Unit, LLC Last Field Event Date:5/31/2023
Site Name: First S&L Properties Release Discovery Date:4/15/2020
NCDEQ UST Incident No.: 45123 Source of Release:UST system
Facility ID No.: N/A Estimated Volume of Release:Unknown
Risk Classification: 260
Risk Rank: High Gasoline (leaded)No
Site Address: 2150 Highway 70 Gasoline (unleaded)Yes
Site City, ST ZIP:Mebane, NC 27302 Gasoline (ethanol blend)No
Site County:Alamance Diesel No
NCDEQ Regional Office:Winston-Salem Kerosene No
Active UST Facility:No Heating Oil (#2)No
USTs Present:None, three 1,000-gallon gasoline USTs
removed April 2020.Heating Oil (>#2)No
Motor Oil No
Hydraulic Oil No
Major Soil Type:Clayey silt to clay Used Oil No
Surface Cover over impacted soil:Grass
Utilities within plume (Y/N/U):Unknown
>S-W MSCCs (Y/N/U):Yes
>Residential MSCCs (Y/N/U):Yes Site (Current):Vacant commercial
>Comm/Ind MSCCs (Y/N/U):No Site (Future):Unknown
North Adjacent:Wooded and vacant
East Adjacent:Residential
Litho-Tectonic Zone Raleigh Belt of the Piedmont
Physiographic Region.South Adjacent:Residential
Geologic Formation Undifferentiated Cambrian to Late
Proterozoic metamorphic rocks.West Adjacent:Residential
Rock Type
Metamorphosed dacitic to rhyolitic
flows and tuffs interbedded with
metamorphosed basaltic flows.
Depth to Bedrock (ft bgs)Unknown Municipal Water (Y/N/U):Yes
Active Potable Wells <1000 ft (#/U):0
Active Potable Wells <500 ft (#/U):0
Depth to water (ft-bgs)26.02 Impacted Wells (Y/N/U):No
Gradient (ft/ft):0.002 Any wells <250 ft (Y/N/U):No
Direction (N E S W combo):West-southwest
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:Graham-Mebane Reservoir
Flow Rate (ft/year):Unknown Stream Classification:WS-II; HQW; NSW,CA
COCs >2L (Y/N/U):Yes Impacted Surface Water (Y/N/U):No
COCs >2L Extent Defined (Y/N):Yes
COCs >GCLs (Y/N/U):Yes
COCs >GCLs (Wells):MW-1 >LEL in Structures:No
COCs >GCLs Extent Defined (Y/N):Yes Vapors in Buildings:Unknown
COCs >2B Standards by 10X (Y/N/U):No Slab-on-grade or Crawlspace:Slab-on-grade
LNAPL (Y/N/U):No Dissolved VOCs <5 ft of Structures:No
LNAPL (Max Thickness ft):0.19 feet, August 2022 LNAPL <15 ft of Structures:No
LNAPL (Wells):MW-1 Basement <30 ft of Dissolved COCs:N/A
LNAPL Extent Defined (Y/N):Yes
LNAPL (<5 ft beneath buildings/U):No
Utilities within plume (Y/N/U):Unknown
Alternative Water Source:N/A
NORP:Yes
Site Remediation:N/A
Soil Excavation:N/A
AFVR:Yes
MMPE:
SVE/AS:
Other:
Additional Support Documentation Available / Data Gaps:
Approach (general discussion):Reduce groundwater concentrations
below GCLs.
Surface Water
Land Use / Zoning
Plume delineated, additional assessment not necessary
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
First S&L Property

ATC Project No. SLC4512302 NCDEQ State Lead Program
APPENDIX B

FIELD NOTES

First S&L Property

ATC Project No. SLC4512302 NCDEQ State Lead Program
APPENDIX C

SOIL BORING LOGS AND MONITORING WELL CONSTRUCTION RECORD

05-04-2023 S:\Enviro\NCDENR State Lead Contract\Thomas Chapman\First S&L Property\Boring Logs\MW-4.borNCDEQ Incident No. 45123
Mebane, North Carolina
2150 Highway 70
First S&L Property
ft bgs = feet below ground surface.
GEX = Geologic Exploration, Inc.
HA = Hand Auger
HSA = Hollow Stem Auger
MONITORING WELL: MW-4
(Page 1 of 1)
Date(s) Drilled : 4/24/23
Drilling Contractor : GEX
Drilling Method : HA & HSA
Boring Diameter : HA = 3.25"
: HSA = 4.25"
Sample Collection : Continuous
Logged By : LdS
Depth in Feet (BGS)0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46 USCSGRAPHICDESCRIPTION
Elev: ?????
Well: MW-4
Grout
Bentonite
Filter Sand
Cover
Riser
Well Screen
ML
CL
ML
CL
CL
CL
Reddish brown CLAYEY SILT, interbedded layers of clay, possible fill.
Brown CLAY.
Reddish brown to dark brown CLAYEY SILT, interbedded layers of red clay.
Brown SILTY CLAY, dry, no odor,
33 -34 feet bgs dense clay layer.
Brown SILTY CLAY, interbedded reddish silt layers.
Brown, CLAY.
End of boring.
WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only:
Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018
1.Well Contractor Information:
Well Contractor Name
NC Well Contractor Certification Number
Company Name
2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.)
3.Well Use (check well use):
Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery
Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks)
4. Date Well(s) Completed: Well ID#
5a. Well Location:
Facility/Owner Name Facility ID# (if applicable)
Physical Address, City, and Zip
County Parcel Identification No. (PIN)
5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient)
N W
6.Is(are) the well(s): □Permanent or □Temporary
7.Is this a repair to an existing well: □Yes or □No
If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form.
8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled:
9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′)
10.Static water level below top of casing: (ft.) If water level is above casing, use “+”
11. Borehole diameter: (in.)
12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.)
FOR WATER SUPPLY WELLS ONLY:
13a. Yield (gpm) Method of test:
13b. Disinfection type: Amount:
14. WATER ZONES
FROM TO DESCRIPTION
ft. ft.
ft. ft.
15. OUTER CASING (for multi-cased wells) OR LINER (if applicable)FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in.
16. INNER CASING OR TUBING (geothermal closed-loop)FROM TO DIAMETER THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
17. SCREENFROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
18. GROUT
FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT
ft. ft.
ft. ft.
ft. ft.
19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD
ft. ft.
ft. ft.
20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.)
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
21. REMARKS
22.Certification:
Signature of Certified Well Contractor Date
By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner.
23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary.
24.SUBMITTAL INSTRUCTIONS
Submit this GW-1 within 30 days of well completion per the following:
24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617
24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636
24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed
24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611
First S&L Property

ATC Project No. SLC4512302 NCDEQ State Lead Program
APPENDIX D

SITE PHOTOGRAPHS

Photo 1: View of MW-1. Photo 2: View of MW-2.
Site Photographs

First S&L Property- Incident #41523

2150 Highway 70
Mebane, Alamance County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Laura de Sousa Site ID: Incident #41523 ATC Project No.: SLC4512303

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

First S&L Property- Incident #41523

2150 Highway 70
Mebane, Alamance County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Laura de Sousa Site ID: Incident #41523 ATC Project No.: SLC4512303
First S&L Property

ATC Project No. SLC4512302 NCDEQ State Lead Program
APPENDIX E

WASTE DISPOSAL MANIFEST

First S&L Property

ATC Project No. SLC4512302 NCDEQ State Lead Program
APPENDIX F

LABORATORY ANALYTICAL RESULTS

ANALYTICAL REPORT
June 12, 2023
ATC Group Services LLC
Sample Delivery Group:L1621875
Samples Received:06/01/2023
Project Number:
Description:First S&L Property
Report To:Corinne Lally
2725 E. Millbrook Road, Ste 121
Raleigh, NC 27604
Entire Report Reviewed By:
June 12, 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:
ATC Group Services LLC L1621875 06/12/23 06:55 1 of 23
June 12, 2023
Heather J Wagner
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 10:55 1 of 23
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 L1621875-01 5
MW-2 L1621875-02 7
MW-3 L1621875-03 9
MW-4 L1621875-04 11
FIELD BLANK L1621875-05 13
TRIP BLANK L1621875-06 15
Qc: Quality Control Summary 17
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 17
Gl: Glossary of Terms 21
Al: Accreditations & Locations 22
Sc: Sample Chain of Custody 23
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 06:55 2 of 23
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 10:55 2 of 23
SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-1 L1621875-01 GW Garrett Lewis 05/30/23 12:00 06/01/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2072804 500 06/07/23 08:22 06/07/23 08:22 JAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-2 L1621875-02 GW Garrett Lewis 05/30/23 11:15 06/01/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2072804 1 06/07/23 05:28 06/07/23 05:28 JAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-3 L1621875-03 GW Garrett Lewis 05/30/23 11:30 06/01/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2072804 1 06/07/23 05:50 06/07/23 05:50 JAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-4 L1621875-04 GW Garrett Lewis 05/30/23 12:30 06/01/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2072804 1 06/07/23 06:12 06/07/23 06:12 JAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
FIELD BLANK L1621875-05 GW Garrett Lewis 05/30/23 12:35 06/01/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2072804 1 06/07/23 02:12 06/07/23 02:12 JAH Mt. Juliet, TN
Collected by Collected date/time Received date/time
TRIP BLANK L1621875-06 GW Garrett Lewis 05/30/23 00:00 06/01/23 09:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2072804 1 06/07/23 01:50 06/07/23 01:50 JAH 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
L1621875
MW-1
Collected date/time: 05/30/23 12:00
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 5650 25000 500 06/07/2023 08:22 WG2072804
Acrolein U J3 1270 25000 500 06/07/2023 08:22 WG2072804
Acrylonitrile U 336 5000 500 06/07/2023 08:22 WG2072804
Benzene 6320 47.1 500 500 06/07/2023 08:22 WG2072804
Bromobenzene U 59.0 500 500 06/07/2023 08:22 WG2072804
Bromodichloromethane U 68.0 500 500 06/07/2023 08:22 WG2072804
Bromoform U 64.5 500 500 06/07/2023 08:22 WG2072804
Bromomethane U 303 2500 500 06/07/2023 08:22 WG2072804
n-Butylbenzene U 78.5 500 500 06/07/2023 08:22 WG2072804
sec-Butylbenzene U 62.5 500 500 06/07/2023 08:22 WG2072804
tert-Butylbenzene U 63.5 500 500 06/07/2023 08:22 WG2072804
Carbon tetrachloride U 64.0 500 500 06/07/2023 08:22 WG2072804
Chlorobenzene U 58.0 500 500 06/07/2023 08:22 WG2072804
Chlorodibromomethane U 70.0 500 500 06/07/2023 08:22 WG2072804
Chloroethane U 96.0 2500 500 06/07/2023 08:22 WG2072804
Chloroform U 55.5 2500 500 06/07/2023 08:22 WG2072804
Chloromethane U 480 1250 500 06/07/2023 08:22 WG2072804
2-Chlorotoluene U 53.0 500 500 06/07/2023 08:22 WG2072804
4-Chlorotoluene U 57.0 500 500 06/07/2023 08:22 WG2072804
1,2-Dibromo-3-Chloropropane U 138 2500 500 06/07/2023 08:22 WG2072804
1,2-Dibromoethane U 63.0 500 500 06/07/2023 08:22 WG2072804
Dibromomethane U 61.0 500 500 06/07/2023 08:22 WG2072804
1,2-Dichlorobenzene U 53.5 500 500 06/07/2023 08:22 WG2072804
1,3-Dichlorobenzene U 55.0 500 500 06/07/2023 08:22 WG2072804
1,4-Dichlorobenzene U 60.0 500 500 06/07/2023 08:22 WG2072804
Dichlorodifluoromethane U J3 187 2500 500 06/07/2023 08:22 WG2072804
1,1-Dichloroethane U 50.0 500 500 06/07/2023 08:22 WG2072804
1,2-Dichloroethane U 40.9 500 500 06/07/2023 08:22 WG2072804
1,1-Dichloroethene U 94.0 500 500 06/07/2023 08:22 WG2072804
cis-1,2-Dichloroethene U 63.0 500 500 06/07/2023 08:22 WG2072804
trans-1,2-Dichloroethene U 74.5 500 500 06/07/2023 08:22 WG2072804
1,2-Dichloropropane U 74.5 500 500 06/07/2023 08:22 WG2072804
1,1-Dichloropropene U 71.0 500 500 06/07/2023 08:22 WG2072804
1,3-Dichloropropane U 55.0 500 500 06/07/2023 08:22 WG2072804
2,2-Dichloropropane U 80.5 500 500 06/07/2023 08:22 WG2072804
Di-isopropyl ether 129 J 52.5 500 500 06/07/2023 08:22 WG2072804
Ethylbenzene 1920 68.5 500 500 06/07/2023 08:22 WG2072804
Hexachloro-1,3-butadiene U 169 500 500 06/07/2023 08:22 WG2072804
Isopropylbenzene 81.7 J 52.5 500 500 06/07/2023 08:22 WG2072804
p-Isopropyltoluene U 60.0 500 500 06/07/2023 08:22 WG2072804
2-Butanone (MEK)U 595 5000 500 06/07/2023 08:22 WG2072804
Methylene Chloride U 215 2500 500 06/07/2023 08:22 WG2072804
4-Methyl-2-pentanone (MIBK)U 239 5000 500 06/07/2023 08:22 WG2072804
Methyl tert-butyl ether U 50.5 500 500 06/07/2023 08:22 WG2072804
Naphthalene U 500 2500 500 06/07/2023 08:22 WG2072804
n-Propylbenzene 165 J 49.7 500 500 06/07/2023 08:22 WG2072804
Styrene U 59.0 500 500 06/07/2023 08:22 WG2072804
1,1,1,2-Tetrachloroethane U 73.5 500 500 06/07/2023 08:22 WG2072804
1,1,2,2-Tetrachloroethane U 66.5 500 500 06/07/2023 08:22 WG2072804
Tetrachloroethene U 150 500 500 06/07/2023 08:22 WG2072804
Toluene 401 J 139 500 500 06/07/2023 08:22 WG2072804
1,2,3-Trichlorobenzene U 115 500 500 06/07/2023 08:22 WG2072804
1,2,4-Trichlorobenzene U 241 500 500 06/07/2023 08:22 WG2072804
1,1,1-Trichloroethane U 74.5 500 500 06/07/2023 08:22 WG2072804
1,1,2-Trichloroethane U 79.0 500 500 06/07/2023 08:22 WG2072804
Trichloroethene U 95.0 500 500 06/07/2023 08:22 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 01
L1621875
MW-1
Collected date/time: 05/30/23 12:00
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 J3 80.0 2500 500 06/07/2023 08:22 WG2072804
1,2,3-Trichloropropane U 119 1250 500 06/07/2023 08:22 WG2072804
1,2,4-Trimethylbenzene 1320 161 500 500 06/07/2023 08:22 WG2072804
1,3,5-Trimethylbenzene 404 J 52.0 500 500 06/07/2023 08:22 WG2072804
Vinyl chloride U 117 500 500 06/07/2023 08:22 WG2072804
o-Xylene 2940 87.0 500 500 06/07/2023 08:22 WG2072804
m&p-Xylenes 6900 215 1000 500 06/07/2023 08:22 WG2072804
(S) Toluene-d8 104 80.0-120 06/07/2023 08:22 WG2072804
(S) 4-Bromofluorobenzene 110 77.0-126 06/07/2023 08:22 WG2072804
(S) 1,2-Dichloroethane-d4 95.8 70.0-130 06/07/2023 08:22 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 02
L1621875
MW-2
Collected date/time: 05/30/23 11:15
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 06/07/2023 05:28 WG2072804
Acrolein U J3 2.54 50.0 1 06/07/2023 05:28 WG2072804
Acrylonitrile U 0.671 10.0 1 06/07/2023 05:28 WG2072804
Benzene U 0.0941 1.00 1 06/07/2023 05:28 WG2072804
Bromobenzene U 0.118 1.00 1 06/07/2023 05:28 WG2072804
Bromodichloromethane U 0.136 1.00 1 06/07/2023 05:28 WG2072804
Bromoform U 0.129 1.00 1 06/07/2023 05:28 WG2072804
Bromomethane U 0.605 5.00 1 06/07/2023 05:28 WG2072804
n-Butylbenzene U 0.157 1.00 1 06/07/2023 05:28 WG2072804
sec-Butylbenzene U 0.125 1.00 1 06/07/2023 05:28 WG2072804
tert-Butylbenzene U 0.127 1.00 1 06/07/2023 05:28 WG2072804
Carbon tetrachloride U 0.128 1.00 1 06/07/2023 05:28 WG2072804
Chlorobenzene U 0.116 1.00 1 06/07/2023 05:28 WG2072804
Chlorodibromomethane U 0.140 1.00 1 06/07/2023 05:28 WG2072804
Chloroethane U 0.192 5.00 1 06/07/2023 05:28 WG2072804
Chloroform U 0.111 5.00 1 06/07/2023 05:28 WG2072804
Chloromethane U 0.960 2.50 1 06/07/2023 05:28 WG2072804
2-Chlorotoluene U 0.106 1.00 1 06/07/2023 05:28 WG2072804
4-Chlorotoluene U 0.114 1.00 1 06/07/2023 05:28 WG2072804
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/07/2023 05:28 WG2072804
1,2-Dibromoethane U 0.126 1.00 1 06/07/2023 05:28 WG2072804
Dibromomethane U 0.122 1.00 1 06/07/2023 05:28 WG2072804
1,2-Dichlorobenzene U 0.107 1.00 1 06/07/2023 05:28 WG2072804
1,3-Dichlorobenzene U 0.110 1.00 1 06/07/2023 05:28 WG2072804
1,4-Dichlorobenzene U 0.120 1.00 1 06/07/2023 05:28 WG2072804
Dichlorodifluoromethane U J3 0.374 5.00 1 06/07/2023 05:28 WG2072804
1,1-Dichloroethane U 0.100 1.00 1 06/07/2023 05:28 WG2072804
1,2-Dichloroethane U 0.0819 1.00 1 06/07/2023 05:28 WG2072804
1,1-Dichloroethene U 0.188 1.00 1 06/07/2023 05:28 WG2072804
cis-1,2-Dichloroethene U 0.126 1.00 1 06/07/2023 05:28 WG2072804
trans-1,2-Dichloroethene U 0.149 1.00 1 06/07/2023 05:28 WG2072804
1,2-Dichloropropane U 0.149 1.00 1 06/07/2023 05:28 WG2072804
1,1-Dichloropropene U 0.142 1.00 1 06/07/2023 05:28 WG2072804
1,3-Dichloropropane U 0.110 1.00 1 06/07/2023 05:28 WG2072804
2,2-Dichloropropane U 0.161 1.00 1 06/07/2023 05:28 WG2072804
Di-isopropyl ether U 0.105 1.00 1 06/07/2023 05:28 WG2072804
Ethylbenzene U 0.137 1.00 1 06/07/2023 05:28 WG2072804
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/07/2023 05:28 WG2072804
Isopropylbenzene U 0.105 1.00 1 06/07/2023 05:28 WG2072804
p-Isopropyltoluene U 0.120 1.00 1 06/07/2023 05:28 WG2072804
2-Butanone (MEK)U 1.19 10.0 1 06/07/2023 05:28 WG2072804
Methylene Chloride U 0.430 5.00 1 06/07/2023 05:28 WG2072804
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 06/07/2023 05:28 WG2072804
Methyl tert-butyl ether U 0.101 1.00 1 06/07/2023 05:28 WG2072804
Naphthalene U 1.00 5.00 1 06/07/2023 05:28 WG2072804
n-Propylbenzene U 0.0993 1.00 1 06/07/2023 05:28 WG2072804
Styrene U 0.118 1.00 1 06/07/2023 05:28 WG2072804
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/07/2023 05:28 WG2072804
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/07/2023 05:28 WG2072804
Tetrachloroethene U 0.300 1.00 1 06/07/2023 05:28 WG2072804
Toluene U 0.278 1.00 1 06/07/2023 05:28 WG2072804
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/07/2023 05:28 WG2072804
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/07/2023 05:28 WG2072804
1,1,1-Trichloroethane U 0.149 1.00 1 06/07/2023 05:28 WG2072804
1,1,2-Trichloroethane U 0.158 1.00 1 06/07/2023 05:28 WG2072804
Trichloroethene U 0.190 1.00 1 06/07/2023 05:28 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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SAMPLE RESULTS - 02
L1621875
MW-2
Collected date/time: 05/30/23 11:15
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 J3 0.160 5.00 1 06/07/2023 05:28 WG2072804
1,2,3-Trichloropropane U 0.237 2.50 1 06/07/2023 05:28 WG2072804
1,2,4-Trimethylbenzene U 0.322 1.00 1 06/07/2023 05:28 WG2072804
1,3,5-Trimethylbenzene U 0.104 1.00 1 06/07/2023 05:28 WG2072804
Vinyl chloride U 0.234 1.00 1 06/07/2023 05:28 WG2072804
o-Xylene U 0.174 1.00 1 06/07/2023 05:28 WG2072804
m&p-Xylenes U 0.430 2.00 1 06/07/2023 05:28 WG2072804
(S) Toluene-d8 107 80.0-120 06/07/2023 05:28 WG2072804
(S) 4-Bromofluorobenzene 105 77.0-126 06/07/2023 05:28 WG2072804
(S) 1,2-Dichloroethane-d4 97.4 70.0-130 06/07/2023 05:28 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 03
L1621875
MW-3
Collected date/time: 05/30/23 11:30
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 183 11.3 50.0 1 06/07/2023 05:50 WG2072804
Acrolein U J3 2.54 50.0 1 06/07/2023 05:50 WG2072804
Acrylonitrile U 0.671 10.0 1 06/07/2023 05:50 WG2072804
Benzene U 0.0941 1.00 1 06/07/2023 05:50 WG2072804
Bromobenzene U 0.118 1.00 1 06/07/2023 05:50 WG2072804
Bromodichloromethane U 0.136 1.00 1 06/07/2023 05:50 WG2072804
Bromoform U 0.129 1.00 1 06/07/2023 05:50 WG2072804
Bromomethane U 0.605 5.00 1 06/07/2023 05:50 WG2072804
n-Butylbenzene U 0.157 1.00 1 06/07/2023 05:50 WG2072804
sec-Butylbenzene U 0.125 1.00 1 06/07/2023 05:50 WG2072804
tert-Butylbenzene U 0.127 1.00 1 06/07/2023 05:50 WG2072804
Carbon tetrachloride U 0.128 1.00 1 06/07/2023 05:50 WG2072804
Chlorobenzene U 0.116 1.00 1 06/07/2023 05:50 WG2072804
Chlorodibromomethane U 0.140 1.00 1 06/07/2023 05:50 WG2072804
Chloroethane U 0.192 5.00 1 06/07/2023 05:50 WG2072804
Chloroform U 0.111 5.00 1 06/07/2023 05:50 WG2072804
Chloromethane U 0.960 2.50 1 06/07/2023 05:50 WG2072804
2-Chlorotoluene U 0.106 1.00 1 06/07/2023 05:50 WG2072804
4-Chlorotoluene U 0.114 1.00 1 06/07/2023 05:50 WG2072804
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/07/2023 05:50 WG2072804
1,2-Dibromoethane U 0.126 1.00 1 06/07/2023 05:50 WG2072804
Dibromomethane U 0.122 1.00 1 06/07/2023 05:50 WG2072804
1,2-Dichlorobenzene U 0.107 1.00 1 06/07/2023 05:50 WG2072804
1,3-Dichlorobenzene U 0.110 1.00 1 06/07/2023 05:50 WG2072804
1,4-Dichlorobenzene U 0.120 1.00 1 06/07/2023 05:50 WG2072804
Dichlorodifluoromethane U J3 0.374 5.00 1 06/07/2023 05:50 WG2072804
1,1-Dichloroethane U 0.100 1.00 1 06/07/2023 05:50 WG2072804
1,2-Dichloroethane U 0.0819 1.00 1 06/07/2023 05:50 WG2072804
1,1-Dichloroethene U 0.188 1.00 1 06/07/2023 05:50 WG2072804
cis-1,2-Dichloroethene U 0.126 1.00 1 06/07/2023 05:50 WG2072804
trans-1,2-Dichloroethene U 0.149 1.00 1 06/07/2023 05:50 WG2072804
1,2-Dichloropropane U 0.149 1.00 1 06/07/2023 05:50 WG2072804
1,1-Dichloropropene U 0.142 1.00 1 06/07/2023 05:50 WG2072804
1,3-Dichloropropane U 0.110 1.00 1 06/07/2023 05:50 WG2072804
2,2-Dichloropropane U 0.161 1.00 1 06/07/2023 05:50 WG2072804
Di-isopropyl ether U 0.105 1.00 1 06/07/2023 05:50 WG2072804
Ethylbenzene U 0.137 1.00 1 06/07/2023 05:50 WG2072804
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/07/2023 05:50 WG2072804
Isopropylbenzene U 0.105 1.00 1 06/07/2023 05:50 WG2072804
p-Isopropyltoluene U 0.120 1.00 1 06/07/2023 05:50 WG2072804
2-Butanone (MEK)U 1.19 10.0 1 06/07/2023 05:50 WG2072804
Methylene Chloride U 0.430 5.00 1 06/07/2023 05:50 WG2072804
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 06/07/2023 05:50 WG2072804
Methyl tert-butyl ether U 0.101 1.00 1 06/07/2023 05:50 WG2072804
Naphthalene U 1.00 5.00 1 06/07/2023 05:50 WG2072804
n-Propylbenzene U 0.0993 1.00 1 06/07/2023 05:50 WG2072804
Styrene U 0.118 1.00 1 06/07/2023 05:50 WG2072804
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/07/2023 05:50 WG2072804
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/07/2023 05:50 WG2072804
Tetrachloroethene U 0.300 1.00 1 06/07/2023 05:50 WG2072804
Toluene U 0.278 1.00 1 06/07/2023 05:50 WG2072804
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/07/2023 05:50 WG2072804
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/07/2023 05:50 WG2072804
1,1,1-Trichloroethane U 0.149 1.00 1 06/07/2023 05:50 WG2072804
1,1,2-Trichloroethane U 0.158 1.00 1 06/07/2023 05:50 WG2072804
Trichloroethene U 0.190 1.00 1 06/07/2023 05:50 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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SAMPLE RESULTS - 03
L1621875
MW-3
Collected date/time: 05/30/23 11:30
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 J3 0.160 5.00 1 06/07/2023 05:50 WG2072804
1,2,3-Trichloropropane U 0.237 2.50 1 06/07/2023 05:50 WG2072804
1,2,4-Trimethylbenzene U 0.322 1.00 1 06/07/2023 05:50 WG2072804
1,3,5-Trimethylbenzene U 0.104 1.00 1 06/07/2023 05:50 WG2072804
Vinyl chloride U 0.234 1.00 1 06/07/2023 05:50 WG2072804
o-Xylene U 0.174 1.00 1 06/07/2023 05:50 WG2072804
m&p-Xylenes U 0.430 2.00 1 06/07/2023 05:50 WG2072804
(S) Toluene-d8 108 80.0-120 06/07/2023 05:50 WG2072804
(S) 4-Bromofluorobenzene 108 77.0-126 06/07/2023 05:50 WG2072804
(S) 1,2-Dichloroethane-d4 99.3 70.0-130 06/07/2023 05:50 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
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ATC Group Services LLC L1621875 06/12/23 10:55 10 of 23
SAMPLE RESULTS - 04
L1621875
MW-4
Collected date/time: 05/30/23 12:30
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 12.5 J 11.3 50.0 1 06/07/2023 06:12 WG2072804
Acrolein U J3 2.54 50.0 1 06/07/2023 06:12 WG2072804
Acrylonitrile U 0.671 10.0 1 06/07/2023 06:12 WG2072804
Benzene U 0.0941 1.00 1 06/07/2023 06:12 WG2072804
Bromobenzene U 0.118 1.00 1 06/07/2023 06:12 WG2072804
Bromodichloromethane U 0.136 1.00 1 06/07/2023 06:12 WG2072804
Bromoform U 0.129 1.00 1 06/07/2023 06:12 WG2072804
Bromomethane U 0.605 5.00 1 06/07/2023 06:12 WG2072804
n-Butylbenzene U 0.157 1.00 1 06/07/2023 06:12 WG2072804
sec-Butylbenzene U 0.125 1.00 1 06/07/2023 06:12 WG2072804
tert-Butylbenzene U 0.127 1.00 1 06/07/2023 06:12 WG2072804
Carbon tetrachloride U 0.128 1.00 1 06/07/2023 06:12 WG2072804
Chlorobenzene U 0.116 1.00 1 06/07/2023 06:12 WG2072804
Chlorodibromomethane U 0.140 1.00 1 06/07/2023 06:12 WG2072804
Chloroethane U 0.192 5.00 1 06/07/2023 06:12 WG2072804
Chloroform U 0.111 5.00 1 06/07/2023 06:12 WG2072804
Chloromethane U 0.960 2.50 1 06/07/2023 06:12 WG2072804
2-Chlorotoluene U 0.106 1.00 1 06/07/2023 06:12 WG2072804
4-Chlorotoluene U 0.114 1.00 1 06/07/2023 06:12 WG2072804
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/07/2023 06:12 WG2072804
1,2-Dibromoethane U 0.126 1.00 1 06/07/2023 06:12 WG2072804
Dibromomethane U 0.122 1.00 1 06/07/2023 06:12 WG2072804
1,2-Dichlorobenzene U 0.107 1.00 1 06/07/2023 06:12 WG2072804
1,3-Dichlorobenzene U 0.110 1.00 1 06/07/2023 06:12 WG2072804
1,4-Dichlorobenzene U 0.120 1.00 1 06/07/2023 06:12 WG2072804
Dichlorodifluoromethane U J3 0.374 5.00 1 06/07/2023 06:12 WG2072804
1,1-Dichloroethane U 0.100 1.00 1 06/07/2023 06:12 WG2072804
1,2-Dichloroethane U 0.0819 1.00 1 06/07/2023 06:12 WG2072804
1,1-Dichloroethene U 0.188 1.00 1 06/07/2023 06:12 WG2072804
cis-1,2-Dichloroethene U 0.126 1.00 1 06/07/2023 06:12 WG2072804
trans-1,2-Dichloroethene U 0.149 1.00 1 06/07/2023 06:12 WG2072804
1,2-Dichloropropane U 0.149 1.00 1 06/07/2023 06:12 WG2072804
1,1-Dichloropropene U 0.142 1.00 1 06/07/2023 06:12 WG2072804
1,3-Dichloropropane U 0.110 1.00 1 06/07/2023 06:12 WG2072804
2,2-Dichloropropane U 0.161 1.00 1 06/07/2023 06:12 WG2072804
Di-isopropyl ether U 0.105 1.00 1 06/07/2023 06:12 WG2072804
Ethylbenzene U 0.137 1.00 1 06/07/2023 06:12 WG2072804
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/07/2023 06:12 WG2072804
Isopropylbenzene U 0.105 1.00 1 06/07/2023 06:12 WG2072804
p-Isopropyltoluene U 0.120 1.00 1 06/07/2023 06:12 WG2072804
2-Butanone (MEK)U 1.19 10.0 1 06/07/2023 06:12 WG2072804
Methylene Chloride U 0.430 5.00 1 06/07/2023 06:12 WG2072804
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 06/07/2023 06:12 WG2072804
Methyl tert-butyl ether U 0.101 1.00 1 06/07/2023 06:12 WG2072804
Naphthalene U 1.00 5.00 1 06/07/2023 06:12 WG2072804
n-Propylbenzene U 0.0993 1.00 1 06/07/2023 06:12 WG2072804
Styrene U 0.118 1.00 1 06/07/2023 06:12 WG2072804
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/07/2023 06:12 WG2072804
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/07/2023 06:12 WG2072804
Tetrachloroethene U 0.300 1.00 1 06/07/2023 06:12 WG2072804
Toluene U 0.278 1.00 1 06/07/2023 06:12 WG2072804
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/07/2023 06:12 WG2072804
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/07/2023 06:12 WG2072804
1,1,1-Trichloroethane U 0.149 1.00 1 06/07/2023 06:12 WG2072804
1,1,2-Trichloroethane U 0.158 1.00 1 06/07/2023 06:12 WG2072804
Trichloroethene U 0.190 1.00 1 06/07/2023 06:12 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 06:55 11 of 23
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 10:55 11 of 23
SAMPLE RESULTS - 04
L1621875
MW-4
Collected date/time: 05/30/23 12:30
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 J3 0.160 5.00 1 06/07/2023 06:12 WG2072804
1,2,3-Trichloropropane U 0.237 2.50 1 06/07/2023 06:12 WG2072804
1,2,4-Trimethylbenzene U 0.322 1.00 1 06/07/2023 06:12 WG2072804
1,3,5-Trimethylbenzene U 0.104 1.00 1 06/07/2023 06:12 WG2072804
Vinyl chloride U 0.234 1.00 1 06/07/2023 06:12 WG2072804
o-Xylene U 0.174 1.00 1 06/07/2023 06:12 WG2072804
m&p-Xylenes U 0.430 2.00 1 06/07/2023 06:12 WG2072804
(S) Toluene-d8 107 80.0-120 06/07/2023 06:12 WG2072804
(S) 4-Bromofluorobenzene 105 77.0-126 06/07/2023 06:12 WG2072804
(S) 1,2-Dichloroethane-d4 98.6 70.0-130 06/07/2023 06:12 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 06:55 12 of 23
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 10:55 12 of 23
SAMPLE RESULTS - 05
L1621875
FIELD BLANK
Collected date/time: 05/30/23 12:35
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 06/07/2023 02:12 WG2072804
Acrolein U J3 2.54 50.0 1 06/07/2023 02:12 WG2072804
Acrylonitrile U 0.671 10.0 1 06/07/2023 02:12 WG2072804
Benzene U 0.0941 1.00 1 06/07/2023 02:12 WG2072804
Bromobenzene U 0.118 1.00 1 06/07/2023 02:12 WG2072804
Bromodichloromethane U 0.136 1.00 1 06/07/2023 02:12 WG2072804
Bromoform U 0.129 1.00 1 06/07/2023 02:12 WG2072804
Bromomethane U 0.605 5.00 1 06/07/2023 02:12 WG2072804
n-Butylbenzene U 0.157 1.00 1 06/07/2023 02:12 WG2072804
sec-Butylbenzene U 0.125 1.00 1 06/07/2023 02:12 WG2072804
tert-Butylbenzene U 0.127 1.00 1 06/07/2023 02:12 WG2072804
Carbon tetrachloride U 0.128 1.00 1 06/07/2023 02:12 WG2072804
Chlorobenzene U 0.116 1.00 1 06/07/2023 02:12 WG2072804
Chlorodibromomethane U 0.140 1.00 1 06/07/2023 02:12 WG2072804
Chloroethane U 0.192 5.00 1 06/07/2023 02:12 WG2072804
Chloroform U 0.111 5.00 1 06/07/2023 02:12 WG2072804
Chloromethane U 0.960 2.50 1 06/07/2023 02:12 WG2072804
2-Chlorotoluene U 0.106 1.00 1 06/07/2023 02:12 WG2072804
4-Chlorotoluene U 0.114 1.00 1 06/07/2023 02:12 WG2072804
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/07/2023 02:12 WG2072804
1,2-Dibromoethane U 0.126 1.00 1 06/07/2023 02:12 WG2072804
Dibromomethane U 0.122 1.00 1 06/07/2023 02:12 WG2072804
1,2-Dichlorobenzene U 0.107 1.00 1 06/07/2023 02:12 WG2072804
1,3-Dichlorobenzene U 0.110 1.00 1 06/07/2023 02:12 WG2072804
1,4-Dichlorobenzene U 0.120 1.00 1 06/07/2023 02:12 WG2072804
Dichlorodifluoromethane U J3 0.374 5.00 1 06/07/2023 02:12 WG2072804
1,1-Dichloroethane U 0.100 1.00 1 06/07/2023 02:12 WG2072804
1,2-Dichloroethane U 0.0819 1.00 1 06/07/2023 02:12 WG2072804
1,1-Dichloroethene U 0.188 1.00 1 06/07/2023 02:12 WG2072804
cis-1,2-Dichloroethene U 0.126 1.00 1 06/07/2023 02:12 WG2072804
trans-1,2-Dichloroethene U 0.149 1.00 1 06/07/2023 02:12 WG2072804
1,2-Dichloropropane U 0.149 1.00 1 06/07/2023 02:12 WG2072804
1,1-Dichloropropene U 0.142 1.00 1 06/07/2023 02:12 WG2072804
1,3-Dichloropropane U 0.110 1.00 1 06/07/2023 02:12 WG2072804
2,2-Dichloropropane U 0.161 1.00 1 06/07/2023 02:12 WG2072804
Di-isopropyl ether U 0.105 1.00 1 06/07/2023 02:12 WG2072804
Ethylbenzene U 0.137 1.00 1 06/07/2023 02:12 WG2072804
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/07/2023 02:12 WG2072804
Isopropylbenzene U 0.105 1.00 1 06/07/2023 02:12 WG2072804
p-Isopropyltoluene U 0.120 1.00 1 06/07/2023 02:12 WG2072804
2-Butanone (MEK)U 1.19 10.0 1 06/07/2023 02:12 WG2072804
Methylene Chloride 0.467 J 0.430 5.00 1 06/07/2023 02:12 WG2072804
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 06/07/2023 02:12 WG2072804
Methyl tert-butyl ether U 0.101 1.00 1 06/07/2023 02:12 WG2072804
Naphthalene U 1.00 5.00 1 06/07/2023 02:12 WG2072804
n-Propylbenzene U 0.0993 1.00 1 06/07/2023 02:12 WG2072804
Styrene U 0.118 1.00 1 06/07/2023 02:12 WG2072804
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/07/2023 02:12 WG2072804
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/07/2023 02:12 WG2072804
Tetrachloroethene U 0.300 1.00 1 06/07/2023 02:12 WG2072804
Toluene U 0.278 1.00 1 06/07/2023 02:12 WG2072804
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/07/2023 02:12 WG2072804
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/07/2023 02:12 WG2072804
1,1,1-Trichloroethane U 0.149 1.00 1 06/07/2023 02:12 WG2072804
1,1,2-Trichloroethane U 0.158 1.00 1 06/07/2023 02:12 WG2072804
Trichloroethene U 0.190 1.00 1 06/07/2023 02:12 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 06:55 13 of 23
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 10:55 13 of 23
SAMPLE RESULTS - 05
L1621875
FIELD BLANK
Collected date/time: 05/30/23 12:35
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 J3 0.160 5.00 1 06/07/2023 02:12 WG2072804
1,2,3-Trichloropropane U 0.237 2.50 1 06/07/2023 02:12 WG2072804
1,2,4-Trimethylbenzene U 0.322 1.00 1 06/07/2023 02:12 WG2072804
1,3,5-Trimethylbenzene U 0.104 1.00 1 06/07/2023 02:12 WG2072804
Vinyl chloride U 0.234 1.00 1 06/07/2023 02:12 WG2072804
o-Xylene U 0.174 1.00 1 06/07/2023 02:12 WG2072804
m&p-Xylenes U 0.430 2.00 1 06/07/2023 02:12 WG2072804
(S) Toluene-d8 107 80.0-120 06/07/2023 02:12 WG2072804
(S) 4-Bromofluorobenzene 106 77.0-126 06/07/2023 02:12 WG2072804
(S) 1,2-Dichloroethane-d4 99.1 70.0-130 06/07/2023 02:12 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 06:55 14 of 23
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 10:55 14 of 23
SAMPLE RESULTS - 06
L1621875
TRIP BLANK
Collected date/time: 05/30/23 00:00
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 06/07/2023 01:50 WG2072804
Acrolein U J3 2.54 50.0 1 06/07/2023 01:50 WG2072804
Acrylonitrile U 0.671 10.0 1 06/07/2023 01:50 WG2072804
Benzene U 0.0941 1.00 1 06/07/2023 01:50 WG2072804
Bromobenzene U 0.118 1.00 1 06/07/2023 01:50 WG2072804
Bromodichloromethane U 0.136 1.00 1 06/07/2023 01:50 WG2072804
Bromoform U 0.129 1.00 1 06/07/2023 01:50 WG2072804
Bromomethane U 0.605 5.00 1 06/07/2023 01:50 WG2072804
n-Butylbenzene U 0.157 1.00 1 06/07/2023 01:50 WG2072804
sec-Butylbenzene U 0.125 1.00 1 06/07/2023 01:50 WG2072804
tert-Butylbenzene U 0.127 1.00 1 06/07/2023 01:50 WG2072804
Carbon tetrachloride U 0.128 1.00 1 06/07/2023 01:50 WG2072804
Chlorobenzene U 0.116 1.00 1 06/07/2023 01:50 WG2072804
Chlorodibromomethane U 0.140 1.00 1 06/07/2023 01:50 WG2072804
Chloroethane U 0.192 5.00 1 06/07/2023 01:50 WG2072804
Chloroform U 0.111 5.00 1 06/07/2023 01:50 WG2072804
Chloromethane U 0.960 2.50 1 06/07/2023 01:50 WG2072804
2-Chlorotoluene U 0.106 1.00 1 06/07/2023 01:50 WG2072804
4-Chlorotoluene U 0.114 1.00 1 06/07/2023 01:50 WG2072804
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 06/07/2023 01:50 WG2072804
1,2-Dibromoethane U 0.126 1.00 1 06/07/2023 01:50 WG2072804
Dibromomethane U 0.122 1.00 1 06/07/2023 01:50 WG2072804
1,2-Dichlorobenzene U 0.107 1.00 1 06/07/2023 01:50 WG2072804
1,3-Dichlorobenzene U 0.110 1.00 1 06/07/2023 01:50 WG2072804
1,4-Dichlorobenzene U 0.120 1.00 1 06/07/2023 01:50 WG2072804
Dichlorodifluoromethane U J3 0.374 5.00 1 06/07/2023 01:50 WG2072804
1,1-Dichloroethane U 0.100 1.00 1 06/07/2023 01:50 WG2072804
1,2-Dichloroethane U 0.0819 1.00 1 06/07/2023 01:50 WG2072804
1,1-Dichloroethene U 0.188 1.00 1 06/07/2023 01:50 WG2072804
cis-1,2-Dichloroethene U 0.126 1.00 1 06/07/2023 01:50 WG2072804
trans-1,2-Dichloroethene U 0.149 1.00 1 06/07/2023 01:50 WG2072804
1,2-Dichloropropane U 0.149 1.00 1 06/07/2023 01:50 WG2072804
1,1-Dichloropropene U 0.142 1.00 1 06/07/2023 01:50 WG2072804
1,3-Dichloropropane U 0.110 1.00 1 06/07/2023 01:50 WG2072804
2,2-Dichloropropane U 0.161 1.00 1 06/07/2023 01:50 WG2072804
Di-isopropyl ether U 0.105 1.00 1 06/07/2023 01:50 WG2072804
Ethylbenzene U 0.137 1.00 1 06/07/2023 01:50 WG2072804
Hexachloro-1,3-butadiene U 0.337 1.00 1 06/07/2023 01:50 WG2072804
Isopropylbenzene U 0.105 1.00 1 06/07/2023 01:50 WG2072804
p-Isopropyltoluene U 0.120 1.00 1 06/07/2023 01:50 WG2072804
2-Butanone (MEK)U 1.19 10.0 1 06/07/2023 01:50 WG2072804
Methylene Chloride U 0.430 5.00 1 06/07/2023 01:50 WG2072804
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 06/07/2023 01:50 WG2072804
Methyl tert-butyl ether U 0.101 1.00 1 06/07/2023 01:50 WG2072804
Naphthalene U 1.00 5.00 1 06/07/2023 01:50 WG2072804
n-Propylbenzene U 0.0993 1.00 1 06/07/2023 01:50 WG2072804
Styrene U 0.118 1.00 1 06/07/2023 01:50 WG2072804
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 06/07/2023 01:50 WG2072804
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 06/07/2023 01:50 WG2072804
Tetrachloroethene U 0.300 1.00 1 06/07/2023 01:50 WG2072804
Toluene U 0.278 1.00 1 06/07/2023 01:50 WG2072804
1,2,3-Trichlorobenzene U 0.230 1.00 1 06/07/2023 01:50 WG2072804
1,2,4-Trichlorobenzene U 0.481 1.00 1 06/07/2023 01:50 WG2072804
1,1,1-Trichloroethane U 0.149 1.00 1 06/07/2023 01:50 WG2072804
1,1,2-Trichloroethane U 0.158 1.00 1 06/07/2023 01:50 WG2072804
Trichloroethene U 0.190 1.00 1 06/07/2023 01:50 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 06:55 15 of 23
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 10:55 15 of 23
SAMPLE RESULTS - 06
L1621875
TRIP BLANK
Collected date/time: 05/30/23 00:00
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 J3 0.160 5.00 1 06/07/2023 01:50 WG2072804
1,2,3-Trichloropropane U 0.237 2.50 1 06/07/2023 01:50 WG2072804
1,2,4-Trimethylbenzene U 0.322 1.00 1 06/07/2023 01:50 WG2072804
1,3,5-Trimethylbenzene U 0.104 1.00 1 06/07/2023 01:50 WG2072804
Vinyl chloride U 0.234 1.00 1 06/07/2023 01:50 WG2072804
o-Xylene U 0.174 1.00 1 06/07/2023 01:50 WG2072804
m&p-Xylenes U 0.430 2.00 1 06/07/2023 01:50 WG2072804
(S) Toluene-d8 109 80.0-120 06/07/2023 01:50 WG2072804
(S) 4-Bromofluorobenzene 112 77.0-126 06/07/2023 01:50 WG2072804
(S) 1,2-Dichloroethane-d4 96.0 70.0-130 06/07/2023 01:50 WG2072804
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 06:55 16 of 23
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1621875 06/12/23 10:55 16 of 23
QUALITY CONTROL SUMMARYWG2072804
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1621875-01,02,03,04,05,06
Method Blank (MB)
(MB) R3935180-3 06/07/23 01:17
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 SUMMARYWG2072804
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1621875-01,02,03,04,05,06
Method Blank (MB)
(MB) R3935180-3 06/07/23 01:17
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 107 77.0-126
(S) 1,2-Dichloroethane-d4 100 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3935180-1 06/07/23 00:11 • (LCSD) R3935180-2 06/07/23 00:33
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 24.6 19.2 98.4 76.8 19.0-160 24.7 27
Acrolein 25.0 21.7 28.4 86.8 114 10.0-160 J3 26.7 26
Acrylonitrile 25.0 25.4 24.6 102 98.4 55.0-149 3.20 20
Benzene 5.00 4.98 4.87 99.6 97.4 70.0-123 2.23 20
Bromobenzene 5.00 4.91 4.87 98.2 97.4 73.0-121 0.818 20
Bromodichloromethane 5.00 4.90 4.84 98.0 96.8 75.0-120 1.23 20
Bromoform 5.00 4.41 4.58 88.2 91.6 68.0-132 3.78 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2072804
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1621875-01,02,03,04,05,06
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3935180-1 06/07/23 00:11 • (LCSD) R3935180-2 06/07/23 00:33
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 3.62 3.58 72.4 71.6 10.0-160 1.11 25
n-Butylbenzene 5.00 5.01 4.75 100 95.0 73.0-125 5.33 20
sec-Butylbenzene 5.00 5.10 4.74 102 94.8 75.0-125 7.32 20
tert-Butylbenzene 5.00 5.16 4.71 103 94.2 76.0-124 9.12 20
Carbon tetrachloride 5.00 4.70 4.43 94.0 88.6 68.0-126 5.91 20
Chlorobenzene 5.00 5.07 4.90 101 98.0 80.0-121 3.41 20
Chlorodibromomethane 5.00 4.65 4.78 93.0 95.6 77.0-125 2.76 20
Chloroethane 5.00 5.10 4.65 102 93.0 47.0-150 9.23 20
Chloroform 5.00 5.10 4.93 102 98.6 73.0-120 3.39 20
Chloromethane 5.00 4.39 4.00 87.8 80.0 41.0-142 9.30 20
2-Chlorotoluene 5.00 5.08 4.82 102 96.4 76.0-123 5.25 20
4-Chlorotoluene 5.00 4.90 4.75 98.0 95.0 75.0-122 3.11 20
1,2-Dibromo-3-Chloropropane 5.00 4.74 4.88 94.8 97.6 58.0-134 2.91 20
1,2-Dibromoethane 5.00 5.02 4.89 100 97.8 80.0-122 2.62 20
Dibromomethane 5.00 4.87 5.04 97.4 101 80.0-120 3.43 20
1,2-Dichlorobenzene 5.00 4.97 5.05 99.4 101 79.0-121 1.60 20
1,3-Dichlorobenzene 5.00 4.90 4.94 98.0 98.8 79.0-120 0.813 20
1,4-Dichlorobenzene 5.00 4.92 4.87 98.4 97.4 79.0-120 1.02 20
Dichlorodifluoromethane 5.00 4.39 3.40 87.8 68.0 51.0-149 J3 25.4 20
1,1-Dichloroethane 5.00 5.09 4.73 102 94.6 70.0-126 7.33 20
1,2-Dichloroethane 5.00 5.02 4.87 100 97.4 70.0-128 3.03 20
1,1-Dichloroethene 5.00 5.43 4.64 109 92.8 71.0-124 15.7 20
cis-1,2-Dichloroethene 5.00 5.00 4.74 100 94.8 73.0-120 5.34 20
trans-1,2-Dichloroethene 5.00 5.42 4.65 108 93.0 73.0-120 15.3 20
1,2-Dichloropropane 5.00 4.74 4.90 94.8 98.0 77.0-125 3.32 20
1,1-Dichloropropene 5.00 5.29 4.40 106 88.0 74.0-126 18.4 20
1,3-Dichloropropane 5.00 5.16 5.02 103 100 80.0-120 2.75 20
2,2-Dichloropropane 5.00 5.04 4.59 101 91.8 58.0-130 9.35 20
Di-isopropyl ether 5.00 5.05 4.87 101 97.4 58.0-138 3.63 20
Ethylbenzene 5.00 5.06 4.99 101 99.8 79.0-123 1.39 20
Hexachloro-1,3-butadiene 5.00 4.94 4.99 98.8 99.8 54.0-138 1.01 20
Isopropylbenzene 5.00 5.16 4.80 103 96.0 76.0-127 7.23 20
p-Isopropyltoluene 5.00 5.11 4.85 102 97.0 76.0-125 5.22 20
2-Butanone (MEK)25.0 26.3 24.4 105 97.6 44.0-160 7.50 20
Methylene Chloride 5.00 5.25 4.71 105 94.2 67.0-120 10.8 20
4-Methyl-2-pentanone (MIBK)25.0 26.3 25.8 105 103 68.0-142 1.92 20
Methyl tert-butyl ether 5.00 5.07 4.93 101 98.6 68.0-125 2.80 20
Naphthalene 5.00 4.38 4.92 87.6 98.4 54.0-135 11.6 20
n-Propylbenzene 5.00 5.24 4.81 105 96.2 77.0-124 8.56 20
Styrene 5.00 4.75 4.75 95.0 95.0 73.0-130 0.000 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
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QUALITY CONTROL SUMMARYWG2072804
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1621875-01,02,03,04,05,06
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3935180-1 06/07/23 00:11 • (LCSD) R3935180-2 06/07/23 00:33
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
1,1,1,2-Tetrachloroethane 5.00 4.95 5.07 99.0 101 75.0-125 2.40 20
1,1,2,2-Tetrachloroethane 5.00 5.27 5.19 105 104 65.0-130 1.53 20
Tetrachloroethene 5.00 5.50 4.73 110 94.6 72.0-132 15.1 20
Toluene 5.00 5.14 4.88 103 97.6 79.0-120 5.19 20
1,2,3-Trichlorobenzene 5.00 4.75 5.25 95.0 105 50.0-138 10.0 20
1,2,4-Trichlorobenzene 5.00 4.47 5.05 89.4 101 57.0-137 12.2 20
1,1,1-Trichloroethane 5.00 5.25 4.80 105 96.0 73.0-124 8.96 20
1,1,2-Trichloroethane 5.00 5.26 5.15 105 103 80.0-120 2.11 20
Trichloroethene 5.00 5.14 4.64 103 92.8 78.0-124 10.2 20
Trichlorofluoromethane 5.00 5.13 4.11 103 82.2 59.0-147 J3 22.1 20
1,2,3-Trichloropropane 5.00 5.33 5.13 107 103 73.0-130 3.82 20
1,2,4-Trimethylbenzene 5.00 5.18 4.98 104 99.6 76.0-121 3.94 20
1,3,5-Trimethylbenzene 5.00 5.00 4.69 100 93.8 76.0-122 6.40 20
Vinyl chloride 5.00 5.06 4.25 101 85.0 67.0-131 17.4 20
o-Xylene 5.00 5.07 4.95 101 99.0 80.0-122 2.40 20
m&p-Xylenes 10.0 9.79 9.82 97.9 98.2 80.0-122 0.306 20
(S) Toluene-d8 105 105 80.0-120
(S) 4-Bromofluorobenzene 107 108 77.0-126
(S) 1,2-Dichloroethane-d4 100 101 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.
J3 The associated batch QC was outside the established quality control range for precision.
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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