RA-1086_7036_CA_MRP_20230421

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

ATC Project No. SLC0703602 NCDEQ State Lead Program

April 21, 2023

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

Subject: Groundwater Monitoring Letter Report
White Oak Convenience Mart
2932 Fishing Creek Road
Enfield, Halifax County, North Carolina
NCDEQ Incident No. 7036
ATC Project No.: SLC0703602

Dear Ms. Blalock:

ATC Associates of North Carolina, P.C. (ATC) is pleased to submit this letter report documenting a
groundwater sampling event conducted on March 31, 2023, at the White Oak Convenience Mart
property located at 2932 Fishing Creek Road in Enfield, Halifax County, North Carolina. A site
topographic map is included as Figure 1. The site is developed with one single-story brick building and is
currently vacant. A site map depicting pertinent site features is included as Figure 2. The groundwater
sampling event was performed based on a February 17, 2023, Task Authorization (TA-02) by the Trust
Fund Branch of the Underground Storage Tank (UST) Section, Division of Waste Management (DWM),
North Carolina Department of Environmental Quality (NCDEQ). The work is being performed as part of
State Lead Contract #N122019A between NCDEQ and ATC.

The site formerly maintained one 275-gallon UST and one 550-gallon UST, both of unknown contents,
that were removed in 1995. In addition, a 550-gallon UST of unknown contents was located at the
adjacent former Amos Grocery and removed in 1995. Seven monitoring wells (MW-1 through MW-7)
are associated with the site.

Municipal water is available from the Halifax County Public Utilities Department in the vicinity of the
site; however, some residents continue to utilize private water supply wells for potable water. Two
presumed potable water supply wells (WSW-11 and WSW-12), five inactive or unknown use (property
connected to municipal water) water supply wells (WSW-3, WSW-7, WSW-15, WSW-16, and WSW-
24), and one irrigation well (WSW-17) are located within 1,000 feet of the site. Water supply wells
WSW-7 and WSW-11 are downgradient from the source area. Table 1 presents the water supply well
ownership information and Figure 3 depicts the water supply well locations.

On March 31, 2023, ATC mobilized to the site to collect groundwater samples from MW-1, MW-4, and
MW-6 and from off-site water supply well WSW-3 and on-site water supply well WSW-15. Light non-
aqueous phase liquid (LNAPL) was observed at a thickness of 0.18 feet in well MW-1 and a sample
was not collected. In addition, a tool shed was found to be improved over top of well MW-6 and ATC
was unable to collect a sample. Therefore, ATC collected groundwater samples from monitoring wells
MW-2 and MW-5 rather than proposed monitoring wells MW-1 and MW-6. During the event, it was
observed that well MW-5 was missing its steel manhole cover. Based on the data collected during the
event, groundwater flows to the west across the site. Benzene was detected at a concentration
exceeding the applicable North Carolina 15A NCAC 02L. 0202 Groundwater Quality Standard (2L
Standard) in well MW-4. No compounds were detected above the respective Gross Contamination
Levels (GCLs) for groundwater. No compounds were detected exceeding 2L Standards in wells MW-2
and MW-5. Well construction information and groundwater elevation data is summarized on Table 2.
White Oak Convenience Mart
April 21, 2023
Page 2 of 2

ATC Project No. SLC0703602 NCDEQ State Lead Program
Field parameters are included as Table 3. Field notes from the monitoring event are included in
Appendix A. Current and historic groundwater analytical results are included as Table 4 and 5,
respectively. Photographs from the monitoring event are included in Appendix B. The laboratory
analytical report is included as Appendix C.

As part of the event, groundwater samples were scheduled to be collected from water supply wells
WSW-3 and WSW-15. On March 31, 2023, ATC personnel spoke with both owners of WSW-3 and
WSW-15 who confirmed that each respective well is inactive and that both properties are served
municipal water by Halifax County. It was noted that electricity remained connected to WSW-3 and the
well house and the well protective casing were both observed to be dilapidated. Based on the inactive
status of water supply wells WSW-3 and WSW-15, samples were not collected. Following the field
event, ATC confirmed with Halifax County that municipal water is provided to both the properties.

The site is not a candidate for closure due to the observed LNAPL documented in well MW-1 and
presence of potable water supply wells within 1,000 feet of the site. ATC recommends conducting an
aggressive fluid vapor recovery (AFVR) event on well MW-1 to mitigate the LNAPL observed within the
well during the March 2023 sampling event. Following the AFVR event, ATC recommends conducting
a limited groundwater monitoring event to evaluate groundwater conditions. Additionally, ATC
recommends the reinstallation of well MW-6 based on the unsuccessful attempts to locate the well
since 2012 as well as the replacement of the MW-5 manhole cover.

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

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

Nicholas Kramer Ashley M. W. Offer, P.G.
Staff Scientist Senior Project Manager
Direct Line: 919-573-1198 Direct Line: 919-573-1206
Email: [e-mail] Email: [e-mail]

Attachments:
1. Groundwater Letter Report

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

FIGURES:
Figure 1 – Topographic Map
Figure 2 – Site Map
Figure 3 – Potential Receptor Map

APPENDICES:
Appendix A – Field Notes
Appendix B – Site Photographs
Appendix C – Laboratory Analytical Report
White Oak Convenience Mart

ATC Project No. SLC0703602 NCDEQ State Lead Program
TABLES
TABLE 1
WATER SUPPLY WELL INFORMATION
WHITE OAK CONVENIENCE MART
2932 FISHING CREEK ROAD
ENFIELD, HALIFAX COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #7036
Parcel ID #Well ID#Well Owner / User Property Address Property Owner Address Well Use Connected to
Public Water
Well Depth
(ft)
Distance and
direction from
source area (ft)
0101210 WSW-1 Joshua and Jasmine
Davis
2932 Fishing Creek
Road
2932 Fishing Creek Road
Enfield, NC 27823
252-202-9442
Abandoned Yes Unknown N/A
0101222 WSW-3 Jamel and Ciera
Moore
1743 White
Oak Road
1743 White Oak Road
Enfield, NC 27823 Inactive Yes Unknown 47 feet North
0102783 WSW-4 Halifax Board of
Education
3090 Fishing Creek
Road
9525 Hwy 301
Halifax, NC 27839
252-583-2151
Inactive Yes Unknown 1,015 feet
Northwest
0100577 WSW-7 Bernard C. and
Gladys B. Brinkley
1792 White Oak
Road
870 Lake Front Drive
Sacramento, CA 95831
919-400-3489
Inactive Yes 202 170 feet
Southwest
0101513 WSW-11 Andrew L. and
Margaret A. West
1852 White Oak
Road
4923 Fishing Creek Road
Enfield, NC 27823
Presumed
Drinking No Unknown 650 feet
Southwest
0101182 WSW-12 Granderson (Mildred)
Johnson
1842 White
Oak Road
1842 White Oak, Road
Enfield, NC 27823
Presumed
Drinking No Unknown 442 feet South
0101210 WSW-15 Joshua and Jasmine
Davis
2932 Fishing Creek
Road
2932 Fishing Creek Road
Enfield, NC 27823
252-202-9442
Inactive Yes Unknown
280 feet East of
source area, on
site parcel
0104607 WSW-16 Viola Scott Fishing Creek
Road
2932 Fishing Creek Road
Enfield, NC 27823
Well Usage
Unknown Yes Unknown 850 feet
Southeast
0100769 WSW-17 Herbert D. and Denell
M. Daniel
2818 Fishing
Creek Road
2818 Fishing Creek Road
Enfield, NC 27823
252-445-5842
Irrigation Yes Unknown 985 feet
Southeast
0100926 WSW-24 White Oak Baptist
Church
1612 White Oak
Road
1612 White Oak Road
PO Box 868
Enfield, NC 27823
252-445-2032
Well Usage
Unknown Yes Unknown 750 feet North
0101528 WSW-26 Wesley & Magnora
McNair
3180 Fishing
Creek Road
1008 Chesaco Avenue
Baltimore, MD 21237
Well Usage
Unknown Yes Unknown 1,100 feet West
0106232 WSW-27 Sandra K. Hardy 2772 Fishing Creek
Road
2772 Fishing Creek Road
Enfield, NC 27823
Presumed
Drinking No Unknown 1,163 feet
Southeast
Notes:
1. Water supply well information is based on visual reconaissance, well survey forms and interviews conducted during the 2019 site receptor survey.
2. Municipal water information provided by the Halifax County Public Utilities Department.
3. Ownership information verified using Halifax County Geographic Information System website, updated April 14, 2023.
Page 1 of 1
TABLE 2
MONITORING WELL CONSTRUCTION AND GROUNDWATER ELEVATION DATA
WHITE OAK CONVENIENCE MART
2932 FISHING CREEK ROAD
ENFIELD, HALIFAX COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #7036
4/21/1999 ND 18.50 ND 82.74
6/11/2002 ND 19.65 ND 81.59
12/31/2003 ND 15.95 ND 85.29
12/19/2005 ND 20.55 ND 80.69
4/5/2012 19.33 19.31 0.02 81.23
7/30/2019 ND 17.03 ND 84.21
9/17/2019 (Pre-AFVR)19.02 19.16 0.14 82.20
3/6/2020 ND 15.40 ND 85.84
3/31/3023 19.95 20.13 0.18 81.26
4/21/1999 ND 16.99 ND 83.01
6/11/2002 ND 18.23 ND 81.77
12/31/2003 ND 14.50 ND 85.50
12/19/2005 ND 19.13 ND 80.87
4/5/2012 ND 17.81 ND 82.19
7/30/2019 ND 15.50 ND 84.50
3/31/3023 ND 18.37 ND 81.63
4/21/1999 ND 18.61 ND 82.83
6/11/2002 ND 19.73 ND 81.71
12/31/2003 ND 16.06 ND 85.38
12/19/2005 ND 20.69 ND 80.75
4/5/2012 ND 19.41 ND 82.03
7/30/2019 ND 17.21 ND 84.23
4/21/1999 ND 18.82 ND 81.26
6/11/2002 ND 19.85 ND 80.23
12/31/2003 ND 16.61 ND 83.47
12/19/2005 ND 21.01 ND 79.07
4/5/2012
7/30/2019 ND 17.86 ND 82.22
3/31/3023 ND 20.57 ND 79.51
12/31/2003 ND 17.74 ND 83.69
12/19/2005 ND 22.32 ND 79.11
4/5/2012 ND 20.85 ND 80.58
7/30/2019 ND 19.00 ND 82.43
3/31/3023 ND 21.75 ND 79.68
12/31/2003 ND 13.17 ND 83.26
12/19/2005 ND 17.50 ND 78.93
4/5/2012
7/30/2019
3/31/3023
12/31/2003 ND 15.85 ND 82.82
12/19/2005 ND 20.11 ND 78.56
4/5/2012
7/30/2019 ND 17.08 ND 81.59
Notes:
1. bgs = Below Ground Surface.
2. ND = Not Detected.
3. Depth to groundwater measured from top of casing.
4. Formula for determing groundwater elevation when free product detected = TOC Elevation - Depth to Groundwater + [0.8581*LNAPL Thickeness].
5. AFVR = Aggressive fluid vapor recovery event.
Depth to Free
Product
(feet bgs)
Free Product
Thickness
(feet bgs)
Unable To Locate
Unable To Locate
Unable To Locate
Depth to Water
(feet)
Groundwater
Elevation (feet bgs)
20-303012/16/2003MW-7
19-292912/16/2003MW-6 96.43
98.67
Unknown
2
Unable To Locate
Unable to Locate
MW-3
3012/16/2003MW-5 101.4320-30 2
4/15/1996
100.0010-30304/15/1996
Date Measured
101.2414-29294/15/1996
Date of
Constructio
n
Total Well
Depth (Feet)
Length of Screen
Interval (feet)
TOC Elevation
(feet)
MW-1
MW-2
100.08
Well Diameter
(inches)
4
2
2
2
Monitoring
Well
10-30304/15/1996MW-4
101.4410-3030
Page 1 of 1
TABLE 3
FIELD PARAMETERS
WHITE OAK CONVENIENCE MART
2932 FISHING CREEK ROAD
ENFIELD, HALIFAX COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #7036
Monitoring
Well
Date
Sampled
Temperature
(oC)
Dissolved
Oxygen
(mg/L)
Specific
Conductivity
(µS/cm)
Conductivity
(µs/cm)pH (SU)ORP (mV)
MW-1 3/31/2023
MW-2 3/31/2023 18.2 6.27 122.3 106.4 3.99 204.2
MW-4 3/31/2023 18.5 4.09 63 55.4 3.82 182.0
MW-5 3/31/2023 17.8 6.67 42.4 36.4 3.86 185.0
Notes:
1. oC = Degrees Celsius.
2. mg/L = milligrams per liter.
3. µs/cm = micro Siemens per centimeter.
4. SU = Standard Units.
5. ORP = Oxidation Reduction Potential.
6. mV = Millivolts.
7. LNAPL = Light Non-Aqueous Phase Liquid.
NOT SAMPLED DUE TO PRESENCE OF LNAPL (THICKNESS OF 0.18 FEET).
Page 1 of 1
TABLE 4
GROUNDWATER ANALYTICAL RESULTS
WHITE OAK CONVENIENCE MART
2932 FISHING CREEK ROAD
ENFIELD, HALIFAX COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #7036
Benzene Toluene Ethylbenzene Total Xylenes n-Butylbenzene sec-Butylbenzene Chloroform Isopropylbenzene p-Isopropyltoluene Naphthalene n-Propylbenzene 1,2,4-Trimethylbenzene 1,3,5-TrimethylbenzeneMW-1 3/31/2023
MW-2 3/31/2023 <1.00 <1.00 <1.00 <2.00 <1.00 <1.00 0.184 J <1.00 <1.00 <5.00 <1.00 <1.00 <1.00
MW-4 3/31/2023 55.5 53.4 25.8 114.1 0.316 J 0.175 J <5.00 1.11 0.505 J 5.07 2.85 17.2 6.97
MW-5 3/31/2023 <1.00 <1.00 <1.00 <2.00 <1.00 <1.00 <5.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00
1 600 600 500 70 70 70 70 25 6 70 400 400
5,000 260,000 80,000 50,000 5,900 8,800 70,000 30,500 11,700 6,000 26,100 28,500 24,100
Notes:
1. "<" or ND = Not detected at or above the laboratory reporting limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion.
3. GCL = Gross Contaminant Level established by NCDEQ.
4. Concentrations in bold print equal or exceed the NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard).
5. Concentrations in italic font equal or exceed the corresponding Gross Contamination Limit (GCL).
6. LNAPL = Light Non-Aqueous Phase Liquid.
7. J = The identification of the analyte is acceptable; the reported value is an estimate.
Method 6200B
2L GW Standard
GCL
Monitoring
Well
Date
Sampled
NOT SAMPLED DUE TO PRESENCE OF LNAPL (THICKNESS OF 0.18 FEET).
Page 1 of 1
TABLE 5
HISTORICAL GROUNDWATER ANALYTICAL RESULTS
WHITE OAK CONVENIENCE MART
2932 FISHING CREEK ROAD
ENFIELD, HALIFAX COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #7036
Benzene Toluene Ethylbenzene Xylenes (Total) Naphthalene MTBE IPE EDB 1,2-Dichloroethane 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene n-Butylbenzene n-Propylbenzene sec-Butylbenzene tert-Butylbenzene Isopropylbenzene p-Isopropyltoluene tert-Amyl alcohol (TAA) tert-Amyl methyl ether (TAME)5/1/1996 5,210 8,890 834 5,880 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
11/1/1997 13,000 13,000 700 4,100 NA NA NA NA 510 NA NA NA NA NA NA NA NA NA NA
5/1/1999 5,970 12,600 917 6,220 NA 113 NA NA 232 NA NA NA NA NA NA NA NA NA NA
6/11/2002 12,000 16,000 720 5,500 240 ND 2,000 440 ND 880 330 28 73 ND ND 27 ND 3,500 ND
12/19/2005 1,200 3,900 480 3,900 290 ND 71 33 ND 970 370 ND 69 ND ND ND ND NA NA
4/5/2012
7/30/2019 14,900 28,000 1,670 15,000 645 <250 436 993 6,700 2,310 590 <250 <250 <250 <250 <250 <250 NA NA
3/4/2020 8,860 25,300 1,370 12,800 1,010 <250 <250 560 <100 2,930 785 <250 <250 <250 <250 <250 <250 NA NA
3/31/2023
5/1/1996 ND ND ND ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
11/1/1997 ND ND ND ND NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA
5/1/1999 1.50 3.10 ND 1.00 NA ND NA NA ND NA NA NA NA NA NA NA NA NA NA
6/11/2002 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
12/19/2005 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA
4/5/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA
7/30/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA
3/31/2023 <1.00 <1.00 <1.00 <2.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 NA NA
5/1/1996 ND ND ND ND NA NA NA NA 1.00 NA NA NA NA NA NA NA NA NA NA
11/1/1997 ND ND ND ND NA NA NA NA ND NA NA NA NA NA NA NA NA NA NA
5/1/1999 0.80 1.50 ND 1.00 NA ND NA NA ND NA NA NA NA NA NA NA NA NA NA
6/11/2002 ND 3.00 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
12/19/2005 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA
4/5/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA
7/30/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA
5/1/1996 2,270 1,760 431 3,020 NA NA NA NA ND NA NA NA NA NA NA NA NA NA NA
11/1/1997 960 1,200 190 1,250 NA NA NA NA 53.0 NA NA NA NA NA NA NA NA NA NA
5/1/1999 495 323 93.0 453 NA 7.4 NA NA 23.0 NA NA NA NA NA NA NA NA NA NA
6/11/2002 1,300 1,500 350 1,580 120 ND ND 20.0 ND 330 100 16.0 49.0 3.0 3.0 23.0 3.0 5,700 33.0
12/19/2005 470 980 170 940 41.0 ND ND 7.7 22 170 61.0 3.10 23.0 1.7 ND 11.0 4.3 NA NA
4/5/2012
7/30/2019 5.20 1.90 0.65 3.20 <0.50 <0.50 <0.50 <0.50 0.48 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA
3/31/2023 55.5 53.4 25.8 114.1 5.07 <1.00 <1.00 <1.00 <1.00 17.2 6.97 0.316 J 2.85 0.175 J <1.00 1.11 0.505 J NA NA
12/17/2003 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
12/19/2005 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA
4/5/2012 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA
7/30/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA
3/31/2023 <1.00 <1.00 <1.00 <2.00 <5.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 NA NA
12/17/2003 15.0 48.0 70.0 310 41.0 ND ND ND ND 24.0 27.0 ND 12.0 0.70 ND 6.0 0.90 ND ND
12/19/2005 2,700 8,400 610 3,600 120 ND 23.0 46.0 32.0 350 100 2.6 44.0 ND ND 14.0 5.7 NA NA
4/5/2012
7/30/2019
3/31/2023
12/17/2003 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
12/19/2005 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA NA
4/5/2012
7/30/2019 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NA NA
1 600 600 500 6 20 70 0.02 0.4 400 400 70 70 70 70 70 25 NE NE
5,000 260,000 80,000 50,000 6,000 20,000 70,000 50 400 28,500 24,100 5,900 26,100 8,800 14,750 30,500 11,700 NE NE
Notes:
1. "<" or "ND" = Not detected at or above the laboratory detection limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb).
3. GCL = Gross Contaminant Level established by NCDEQ.
4. Concentrations in bold equal or exceed the corresponding NCDEQ Groundwater Quality 2L Standard (2L Standard).
5. Concentrations in italic font equal or exceed the corresponding Gross Contamination Limit (GCL).
6. NA = Not Analyzed.
7. MTBE = Methyl Tertiary Butyl Ether.
8. IPE = Isopropyl Ether.
9. EDB = Ethylene Dibromide (1,2-Dibromoethane).
10. LNAPL = Light Non-Aqueous Phase Liquid.
GCL
Monitoring
Well Date
2L GW Standard
Method 6200B
Unable to Locate
Unable to Locate
MW-1
Unable to Locate
Unable to Locate
NOT SAMPLED DUE TO PRESENCE OF LNAPL (THICKNESS OF 0.02 FEET).
MW-7
MW-2
MW-3
NOT SAMPLED DUE TO PRESENCE OF LNAPL (THICKNESS OF 0.18 FEET).
Unable to Locate
MW-4
MW-6
MW-5
Page 1 of 1
White Oak Convenience Mart

ATC Project No. SLC0703602 NCDEQ State Lead Program
FIGURES
MW-2MW-6MW-4MW-7MW-5MW-1MW-3WSW-3WSW-1WSW-7WSW-15PROPERTY BOUNDARYFORMERUST BASINFORMER WHITE OAKCONVENIENT MART
WSW-26WSW-4WSW-7WSW-24WSW-16WSW-3WSW-15WSW-1WSW-12WSW-11SITEWSW-17WSW-27CONNECTED TO MUNICIPAL WATER, USAGE UNKNOWNINACTIVE WATER SUPPLY WELLDRINKING WATER SUPPLY WELLIRRIGATION WATER SUPPLY WELLABANDONED WELL
White Oak Convenience Mart

ATC Project No. SLC0703602 NCDEQ State Lead Program
APPENDIX A

FIELD NOTES
White Oak Convenience Mart

ATC Project No. SLC0703602 NCDEQ State Lead Program
APPENDIX B

SITE PHOTOGRAPHS

Photo 1: A view of the site building facing southeast.

Photo 2: A view of monitoring well MW-1.

White Oak Convenience Mart
2932 Fishing Creek Road
Enfield, Halifax County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
[phone] FAX [phone]
Photograph Taken By:
Nicholas Kramer
NCDEQ Incident
#7036 ATC Project No.: SLC0703602

Photo 3: A view of monitoring well MW-2.

Photo 4: A view of monitoring well MW-4.

White Oak Convenience Mart
2932 Fishing Creek Road
Enfield, Halifax County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
[phone] FAX [phone]
Photograph Taken By:
Nicholas Kramer
NCDEQ Incident
#7036 ATC Project No.: SLC0703602

Photo 5: A view of monitoring well MW-5.

White Oak Convenience Mart
2932 Fishing Creek Road
Enfield, Halifax County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
[phone] FAX [phone]
Photograph Taken By:
Nicholas Kramer
NCDEQ Incident
#7036 ATC Project No.: SLC0703602

White Oak Convenience Mart

ATC Project No. SLC0703602 NCDEQ State Lead Program
APPENDIX C

LABORATORY ANALYTICAL RESULTS

ANALYTICAL REPORT
April 11, 2023
ATC Group Services LLC
Sample Delivery Group:L1601553
Samples Received:04/04/2023
Project Number:
Description:White Oak Convenience Mart
Report To:Nicholas Kramer
2725 E. Millbrook Road, Ste 121
Raleigh, NC 27604
Entire Report Reviewed By:
April 11, 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 L1601553 04/11/23 07:05 1 of 20
April 11, 2023
Heather J Wagner
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 1 of 20
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-2 L1601553-01 5
MW-4 L1601553-02 7
MW-5 L1601553-03 9
FB-1 L1601553-04 11
Qc: Quality Control Summary 13
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 13
Gl: Glossary of Terms 17
Al: Accreditations & Locations 18
Sc: Sample Chain of Custody 19
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 2 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 2 of 20
SAMPLE SUMMARY
Collected by Collected date/time Received date/time
MW-2 L1601553-01 GW Justin Jones 03/31/23 10:35 04/04/23 10:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2038215 1 04/07/23 20:05 04/07/23 20:05 ACG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-4 L1601553-02 GW Justin Jones 03/31/23 09:50 04/04/23 10:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2038215 1 04/07/23 22:08 04/07/23 22:08 ACG Mt. Juliet, TN
Collected by Collected date/time Received date/time
MW-5 L1601553-03 GW Justin Jones 03/31/23 10:45 04/04/23 10:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2038215 1 04/07/23 22:28 04/07/23 22:28 ACG Mt. Juliet, TN
Collected by Collected date/time Received date/time
FB-1 L1601553-04 GW Justin Jones 03/31/23 10:50 04/04/23 10:00
Method Batch Dilution Preparation Analysis Analyst Location
date/time date/time
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2038215 1 04/07/23 22:49 04/07/23 22:49 ACG Mt. Juliet, TN
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 3 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 3 of 20
CASE NARRATIVE
All sample aliquots were received at the correct temperature, in the proper containers, with the
appropriate preservatives, and within method specified holding times, unless qualified or notated within
the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples
have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control
are within established criteria except where addressed in this case narrative, a non-conformance form
or properly qualified within the sample results. By my digital signature below, I affirm to the best of my
knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the
quality of the data have been identified by the laboratory, and no information or data have been
knowingly withheld that would affect the quality of the data.
[Preliminary Report]
Heather J Wagner
Project Manager
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 4 of 20
Heather J Wagner
Project Manager
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 4 of 20
SAMPLE RESULTS - 01
L1601553
MW-2
Collected date/time: 03/31/23 10:35
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 04/07/2023 20:05 WG2038215
Acrolein U 2.54 50.0 1 04/07/2023 20:05 WG2038215
Acrylonitrile U 0.671 10.0 1 04/07/2023 20:05 WG2038215
Benzene U 0.0941 1.00 1 04/07/2023 20:05 WG2038215
Bromobenzene U 0.118 1.00 1 04/07/2023 20:05 WG2038215
Bromodichloromethane U 0.136 1.00 1 04/07/2023 20:05 WG2038215
Bromoform U 0.129 1.00 1 04/07/2023 20:05 WG2038215
Bromomethane U 0.605 5.00 1 04/07/2023 20:05 WG2038215
n-Butylbenzene U 0.157 1.00 1 04/07/2023 20:05 WG2038215
sec-Butylbenzene U 0.125 1.00 1 04/07/2023 20:05 WG2038215
tert-Butylbenzene U 0.127 1.00 1 04/07/2023 20:05 WG2038215
Carbon tetrachloride U 0.128 1.00 1 04/07/2023 20:05 WG2038215
Chlorobenzene U 0.116 1.00 1 04/07/2023 20:05 WG2038215
Chlorodibromomethane U 0.140 1.00 1 04/07/2023 20:05 WG2038215
Chloroethane U 0.192 5.00 1 04/07/2023 20:05 WG2038215
Chloroform 0.184 J 0.111 5.00 1 04/07/2023 20:05 WG2038215
Chloromethane U 0.960 2.50 1 04/07/2023 20:05 WG2038215
2-Chlorotoluene U 0.106 1.00 1 04/07/2023 20:05 WG2038215
4-Chlorotoluene U 0.114 1.00 1 04/07/2023 20:05 WG2038215
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 04/07/2023 20:05 WG2038215
1,2-Dibromoethane U 0.126 1.00 1 04/07/2023 20:05 WG2038215
Dibromomethane U 0.122 1.00 1 04/07/2023 20:05 WG2038215
1,2-Dichlorobenzene U 0.107 1.00 1 04/07/2023 20:05 WG2038215
1,3-Dichlorobenzene U 0.110 1.00 1 04/07/2023 20:05 WG2038215
1,4-Dichlorobenzene U 0.120 1.00 1 04/07/2023 20:05 WG2038215
Dichlorodifluoromethane U 0.374 5.00 1 04/07/2023 20:05 WG2038215
1,1-Dichloroethane U 0.100 1.00 1 04/07/2023 20:05 WG2038215
1,2-Dichloroethane U 0.0819 1.00 1 04/07/2023 20:05 WG2038215
1,1-Dichloroethene U 0.188 1.00 1 04/07/2023 20:05 WG2038215
cis-1,2-Dichloroethene U 0.126 1.00 1 04/07/2023 20:05 WG2038215
trans-1,2-Dichloroethene U 0.149 1.00 1 04/07/2023 20:05 WG2038215
1,2-Dichloropropane U 0.149 1.00 1 04/07/2023 20:05 WG2038215
1,1-Dichloropropene U 0.142 1.00 1 04/07/2023 20:05 WG2038215
1,3-Dichloropropane U 0.110 1.00 1 04/07/2023 20:05 WG2038215
2,2-Dichloropropane U 0.161 1.00 1 04/07/2023 20:05 WG2038215
Di-isopropyl ether U 0.105 1.00 1 04/07/2023 20:05 WG2038215
Ethylbenzene U 0.137 1.00 1 04/07/2023 20:05 WG2038215
Hexachloro-1,3-butadiene U 0.337 1.00 1 04/07/2023 20:05 WG2038215
Isopropylbenzene U 0.105 1.00 1 04/07/2023 20:05 WG2038215
p-Isopropyltoluene U 0.120 1.00 1 04/07/2023 20:05 WG2038215
2-Butanone (MEK)U 1.19 10.0 1 04/07/2023 20:05 WG2038215
Methylene Chloride U 0.430 5.00 1 04/07/2023 20:05 WG2038215
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 04/07/2023 20:05 WG2038215
Methyl tert-butyl ether U 0.101 1.00 1 04/07/2023 20:05 WG2038215
Naphthalene U 1.00 5.00 1 04/07/2023 20:05 WG2038215
n-Propylbenzene U 0.0993 1.00 1 04/07/2023 20:05 WG2038215
Styrene U 0.118 1.00 1 04/07/2023 20:05 WG2038215
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 04/07/2023 20:05 WG2038215
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 04/07/2023 20:05 WG2038215
Tetrachloroethene U 0.300 1.00 1 04/07/2023 20:05 WG2038215
Toluene U 0.278 1.00 1 04/07/2023 20:05 WG2038215
1,2,3-Trichlorobenzene U 0.230 1.00 1 04/07/2023 20:05 WG2038215
1,2,4-Trichlorobenzene U 0.481 1.00 1 04/07/2023 20:05 WG2038215
1,1,1-Trichloroethane U 0.149 1.00 1 04/07/2023 20:05 WG2038215
1,1,2-Trichloroethane U 0.158 1.00 1 04/07/2023 20:05 WG2038215
Trichloroethene U 0.190 1.00 1 04/07/2023 20:05 WG2038215
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 5 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 5 of 20
SAMPLE RESULTS - 01
L1601553
MW-2
Collected date/time: 03/31/23 10:35
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 0.160 5.00 1 04/07/2023 20:05 WG2038215
1,2,3-Trichloropropane U 0.237 2.50 1 04/07/2023 20:05 WG2038215
1,2,4-Trimethylbenzene U 0.322 1.00 1 04/07/2023 20:05 WG2038215
1,3,5-Trimethylbenzene U 0.104 1.00 1 04/07/2023 20:05 WG2038215
Vinyl chloride U 0.234 1.00 1 04/07/2023 20:05 WG2038215
o-Xylene U 0.174 1.00 1 04/07/2023 20:05 WG2038215
m&p-Xylenes U 0.430 2.00 1 04/07/2023 20:05 WG2038215
(S) Toluene-d8 107 80.0-120 04/07/2023 20:05 WG2038215
(S) 4-Bromofluorobenzene 100 77.0-126 04/07/2023 20:05 WG2038215
(S) 1,2-Dichloroethane-d4 102 70.0-130 04/07/2023 20:05 WG2038215
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 6 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 6 of 20
SAMPLE RESULTS - 02
L1601553
MW-4
Collected date/time: 03/31/23 09:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 04/07/2023 22:08 WG2038215
Acrolein U 2.54 50.0 1 04/07/2023 22:08 WG2038215
Acrylonitrile U 0.671 10.0 1 04/07/2023 22:08 WG2038215
Benzene 55.5 0.0941 1.00 1 04/07/2023 22:08 WG2038215
Bromobenzene U 0.118 1.00 1 04/07/2023 22:08 WG2038215
Bromodichloromethane U 0.136 1.00 1 04/07/2023 22:08 WG2038215
Bromoform U 0.129 1.00 1 04/07/2023 22:08 WG2038215
Bromomethane U 0.605 5.00 1 04/07/2023 22:08 WG2038215
n-Butylbenzene 0.316 J 0.157 1.00 1 04/07/2023 22:08 WG2038215
sec-Butylbenzene 0.175 J 0.125 1.00 1 04/07/2023 22:08 WG2038215
tert-Butylbenzene U 0.127 1.00 1 04/07/2023 22:08 WG2038215
Carbon tetrachloride U 0.128 1.00 1 04/07/2023 22:08 WG2038215
Chlorobenzene U 0.116 1.00 1 04/07/2023 22:08 WG2038215
Chlorodibromomethane U 0.140 1.00 1 04/07/2023 22:08 WG2038215
Chloroethane U 0.192 5.00 1 04/07/2023 22:08 WG2038215
Chloroform U 0.111 5.00 1 04/07/2023 22:08 WG2038215
Chloromethane U 0.960 2.50 1 04/07/2023 22:08 WG2038215
2-Chlorotoluene U 0.106 1.00 1 04/07/2023 22:08 WG2038215
4-Chlorotoluene U 0.114 1.00 1 04/07/2023 22:08 WG2038215
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 04/07/2023 22:08 WG2038215
1,2-Dibromoethane U 0.126 1.00 1 04/07/2023 22:08 WG2038215
Dibromomethane U 0.122 1.00 1 04/07/2023 22:08 WG2038215
1,2-Dichlorobenzene U 0.107 1.00 1 04/07/2023 22:08 WG2038215
1,3-Dichlorobenzene U 0.110 1.00 1 04/07/2023 22:08 WG2038215
1,4-Dichlorobenzene U 0.120 1.00 1 04/07/2023 22:08 WG2038215
Dichlorodifluoromethane U 0.374 5.00 1 04/07/2023 22:08 WG2038215
1,1-Dichloroethane U 0.100 1.00 1 04/07/2023 22:08 WG2038215
1,2-Dichloroethane U 0.0819 1.00 1 04/07/2023 22:08 WG2038215
1,1-Dichloroethene U 0.188 1.00 1 04/07/2023 22:08 WG2038215
cis-1,2-Dichloroethene U 0.126 1.00 1 04/07/2023 22:08 WG2038215
trans-1,2-Dichloroethene U 0.149 1.00 1 04/07/2023 22:08 WG2038215
1,2-Dichloropropane U 0.149 1.00 1 04/07/2023 22:08 WG2038215
1,1-Dichloropropene U 0.142 1.00 1 04/07/2023 22:08 WG2038215
1,3-Dichloropropane U 0.110 1.00 1 04/07/2023 22:08 WG2038215
2,2-Dichloropropane U 0.161 1.00 1 04/07/2023 22:08 WG2038215
Di-isopropyl ether U 0.105 1.00 1 04/07/2023 22:08 WG2038215
Ethylbenzene 25.8 0.137 1.00 1 04/07/2023 22:08 WG2038215
Hexachloro-1,3-butadiene U 0.337 1.00 1 04/07/2023 22:08 WG2038215
Isopropylbenzene 1.11 0.105 1.00 1 04/07/2023 22:08 WG2038215
p-Isopropyltoluene 0.505 J 0.120 1.00 1 04/07/2023 22:08 WG2038215
2-Butanone (MEK)U 1.19 10.0 1 04/07/2023 22:08 WG2038215
Methylene Chloride U 0.430 5.00 1 04/07/2023 22:08 WG2038215
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 04/07/2023 22:08 WG2038215
Methyl tert-butyl ether U 0.101 1.00 1 04/07/2023 22:08 WG2038215
Naphthalene 5.07 1.00 5.00 1 04/07/2023 22:08 WG2038215
n-Propylbenzene 2.85 0.0993 1.00 1 04/07/2023 22:08 WG2038215
Styrene U 0.118 1.00 1 04/07/2023 22:08 WG2038215
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 04/07/2023 22:08 WG2038215
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 04/07/2023 22:08 WG2038215
Tetrachloroethene U 0.300 1.00 1 04/07/2023 22:08 WG2038215
Toluene 53.4 0.278 1.00 1 04/07/2023 22:08 WG2038215
1,2,3-Trichlorobenzene U 0.230 1.00 1 04/07/2023 22:08 WG2038215
1,2,4-Trichlorobenzene U 0.481 1.00 1 04/07/2023 22:08 WG2038215
1,1,1-Trichloroethane U 0.149 1.00 1 04/07/2023 22:08 WG2038215
1,1,2-Trichloroethane U 0.158 1.00 1 04/07/2023 22:08 WG2038215
Trichloroethene U 0.190 1.00 1 04/07/2023 22:08 WG2038215
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 7 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 7 of 20
SAMPLE RESULTS - 02
L1601553
MW-4
Collected date/time: 03/31/23 09:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 04/07/2023 22:08 WG2038215
1,2,3-Trichloropropane U 0.237 2.50 1 04/07/2023 22:08 WG2038215
1,2,4-Trimethylbenzene 17.2 0.322 1.00 1 04/07/2023 22:08 WG2038215
1,3,5-Trimethylbenzene 6.97 0.104 1.00 1 04/07/2023 22:08 WG2038215
Vinyl chloride U 0.234 1.00 1 04/07/2023 22:08 WG2038215
o-Xylene 34.9 0.174 1.00 1 04/07/2023 22:08 WG2038215
m&p-Xylenes 79.2 0.430 2.00 1 04/07/2023 22:08 WG2038215
(S) Toluene-d8 106 80.0-120 04/07/2023 22:08 WG2038215
(S) 4-Bromofluorobenzene 102 77.0-126 04/07/2023 22:08 WG2038215
(S) 1,2-Dichloroethane-d4 100 70.0-130 04/07/2023 22:08 WG2038215
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 8 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 8 of 20
SAMPLE RESULTS - 03
L1601553
MW-5
Collected date/time: 03/31/23 10:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 04/07/2023 22:28 WG2038215
Acrolein U 2.54 50.0 1 04/07/2023 22:28 WG2038215
Acrylonitrile U 0.671 10.0 1 04/07/2023 22:28 WG2038215
Benzene U 0.0941 1.00 1 04/07/2023 22:28 WG2038215
Bromobenzene U 0.118 1.00 1 04/07/2023 22:28 WG2038215
Bromodichloromethane U 0.136 1.00 1 04/07/2023 22:28 WG2038215
Bromoform U 0.129 1.00 1 04/07/2023 22:28 WG2038215
Bromomethane U 0.605 5.00 1 04/07/2023 22:28 WG2038215
n-Butylbenzene U 0.157 1.00 1 04/07/2023 22:28 WG2038215
sec-Butylbenzene U 0.125 1.00 1 04/07/2023 22:28 WG2038215
tert-Butylbenzene U 0.127 1.00 1 04/07/2023 22:28 WG2038215
Carbon tetrachloride U 0.128 1.00 1 04/07/2023 22:28 WG2038215
Chlorobenzene U 0.116 1.00 1 04/07/2023 22:28 WG2038215
Chlorodibromomethane U 0.140 1.00 1 04/07/2023 22:28 WG2038215
Chloroethane U 0.192 5.00 1 04/07/2023 22:28 WG2038215
Chloroform U 0.111 5.00 1 04/07/2023 22:28 WG2038215
Chloromethane U 0.960 2.50 1 04/07/2023 22:28 WG2038215
2-Chlorotoluene U 0.106 1.00 1 04/07/2023 22:28 WG2038215
4-Chlorotoluene U 0.114 1.00 1 04/07/2023 22:28 WG2038215
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 04/07/2023 22:28 WG2038215
1,2-Dibromoethane U 0.126 1.00 1 04/07/2023 22:28 WG2038215
Dibromomethane U 0.122 1.00 1 04/07/2023 22:28 WG2038215
1,2-Dichlorobenzene U 0.107 1.00 1 04/07/2023 22:28 WG2038215
1,3-Dichlorobenzene U 0.110 1.00 1 04/07/2023 22:28 WG2038215
1,4-Dichlorobenzene U 0.120 1.00 1 04/07/2023 22:28 WG2038215
Dichlorodifluoromethane U 0.374 5.00 1 04/07/2023 22:28 WG2038215
1,1-Dichloroethane U 0.100 1.00 1 04/07/2023 22:28 WG2038215
1,2-Dichloroethane U 0.0819 1.00 1 04/07/2023 22:28 WG2038215
1,1-Dichloroethene U 0.188 1.00 1 04/07/2023 22:28 WG2038215
cis-1,2-Dichloroethene U 0.126 1.00 1 04/07/2023 22:28 WG2038215
trans-1,2-Dichloroethene U 0.149 1.00 1 04/07/2023 22:28 WG2038215
1,2-Dichloropropane U 0.149 1.00 1 04/07/2023 22:28 WG2038215
1,1-Dichloropropene U 0.142 1.00 1 04/07/2023 22:28 WG2038215
1,3-Dichloropropane U 0.110 1.00 1 04/07/2023 22:28 WG2038215
2,2-Dichloropropane U 0.161 1.00 1 04/07/2023 22:28 WG2038215
Di-isopropyl ether U 0.105 1.00 1 04/07/2023 22:28 WG2038215
Ethylbenzene U 0.137 1.00 1 04/07/2023 22:28 WG2038215
Hexachloro-1,3-butadiene U 0.337 1.00 1 04/07/2023 22:28 WG2038215
Isopropylbenzene U 0.105 1.00 1 04/07/2023 22:28 WG2038215
p-Isopropyltoluene U 0.120 1.00 1 04/07/2023 22:28 WG2038215
2-Butanone (MEK)U 1.19 10.0 1 04/07/2023 22:28 WG2038215
Methylene Chloride U 0.430 5.00 1 04/07/2023 22:28 WG2038215
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 04/07/2023 22:28 WG2038215
Methyl tert-butyl ether U 0.101 1.00 1 04/07/2023 22:28 WG2038215
Naphthalene U 1.00 5.00 1 04/07/2023 22:28 WG2038215
n-Propylbenzene U 0.0993 1.00 1 04/07/2023 22:28 WG2038215
Styrene U 0.118 1.00 1 04/07/2023 22:28 WG2038215
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 04/07/2023 22:28 WG2038215
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 04/07/2023 22:28 WG2038215
Tetrachloroethene U 0.300 1.00 1 04/07/2023 22:28 WG2038215
Toluene U 0.278 1.00 1 04/07/2023 22:28 WG2038215
1,2,3-Trichlorobenzene U 0.230 1.00 1 04/07/2023 22:28 WG2038215
1,2,4-Trichlorobenzene U 0.481 1.00 1 04/07/2023 22:28 WG2038215
1,1,1-Trichloroethane U 0.149 1.00 1 04/07/2023 22:28 WG2038215
1,1,2-Trichloroethane U 0.158 1.00 1 04/07/2023 22:28 WG2038215
Trichloroethene U 0.190 1.00 1 04/07/2023 22:28 WG2038215
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 9 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 9 of 20
SAMPLE RESULTS - 03
L1601553
MW-5
Collected date/time: 03/31/23 10:45
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 04/07/2023 22:28 WG2038215
1,2,3-Trichloropropane U 0.237 2.50 1 04/07/2023 22:28 WG2038215
1,2,4-Trimethylbenzene U 0.322 1.00 1 04/07/2023 22:28 WG2038215
1,3,5-Trimethylbenzene U 0.104 1.00 1 04/07/2023 22:28 WG2038215
Vinyl chloride U 0.234 1.00 1 04/07/2023 22:28 WG2038215
o-Xylene U 0.174 1.00 1 04/07/2023 22:28 WG2038215
m&p-Xylenes U 0.430 2.00 1 04/07/2023 22:28 WG2038215
(S) Toluene-d8 108 80.0-120 04/07/2023 22:28 WG2038215
(S) 4-Bromofluorobenzene 102 77.0-126 04/07/2023 22:28 WG2038215
(S) 1,2-Dichloroethane-d4 100 70.0-130 04/07/2023 22:28 WG2038215
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 10 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 10 of 20
SAMPLE RESULTS - 04
L1601553
FB-1
Collected date/time: 03/31/23 10:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Acetone U 11.3 50.0 1 04/07/2023 22:49 WG2038215
Acrolein U 2.54 50.0 1 04/07/2023 22:49 WG2038215
Acrylonitrile U 0.671 10.0 1 04/07/2023 22:49 WG2038215
Benzene U 0.0941 1.00 1 04/07/2023 22:49 WG2038215
Bromobenzene U 0.118 1.00 1 04/07/2023 22:49 WG2038215
Bromodichloromethane U 0.136 1.00 1 04/07/2023 22:49 WG2038215
Bromoform U 0.129 1.00 1 04/07/2023 22:49 WG2038215
Bromomethane U 0.605 5.00 1 04/07/2023 22:49 WG2038215
n-Butylbenzene U 0.157 1.00 1 04/07/2023 22:49 WG2038215
sec-Butylbenzene U 0.125 1.00 1 04/07/2023 22:49 WG2038215
tert-Butylbenzene U 0.127 1.00 1 04/07/2023 22:49 WG2038215
Carbon tetrachloride U 0.128 1.00 1 04/07/2023 22:49 WG2038215
Chlorobenzene U 0.116 1.00 1 04/07/2023 22:49 WG2038215
Chlorodibromomethane U 0.140 1.00 1 04/07/2023 22:49 WG2038215
Chloroethane U 0.192 5.00 1 04/07/2023 22:49 WG2038215
Chloroform U 0.111 5.00 1 04/07/2023 22:49 WG2038215
Chloromethane U 0.960 2.50 1 04/07/2023 22:49 WG2038215
2-Chlorotoluene U 0.106 1.00 1 04/07/2023 22:49 WG2038215
4-Chlorotoluene U 0.114 1.00 1 04/07/2023 22:49 WG2038215
1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 04/07/2023 22:49 WG2038215
1,2-Dibromoethane U 0.126 1.00 1 04/07/2023 22:49 WG2038215
Dibromomethane U 0.122 1.00 1 04/07/2023 22:49 WG2038215
1,2-Dichlorobenzene U 0.107 1.00 1 04/07/2023 22:49 WG2038215
1,3-Dichlorobenzene U 0.110 1.00 1 04/07/2023 22:49 WG2038215
1,4-Dichlorobenzene U 0.120 1.00 1 04/07/2023 22:49 WG2038215
Dichlorodifluoromethane U 0.374 5.00 1 04/07/2023 22:49 WG2038215
1,1-Dichloroethane U 0.100 1.00 1 04/07/2023 22:49 WG2038215
1,2-Dichloroethane U 0.0819 1.00 1 04/07/2023 22:49 WG2038215
1,1-Dichloroethene U 0.188 1.00 1 04/07/2023 22:49 WG2038215
cis-1,2-Dichloroethene U 0.126 1.00 1 04/07/2023 22:49 WG2038215
trans-1,2-Dichloroethene U 0.149 1.00 1 04/07/2023 22:49 WG2038215
1,2-Dichloropropane U 0.149 1.00 1 04/07/2023 22:49 WG2038215
1,1-Dichloropropene U 0.142 1.00 1 04/07/2023 22:49 WG2038215
1,3-Dichloropropane U 0.110 1.00 1 04/07/2023 22:49 WG2038215
2,2-Dichloropropane U 0.161 1.00 1 04/07/2023 22:49 WG2038215
Di-isopropyl ether U 0.105 1.00 1 04/07/2023 22:49 WG2038215
Ethylbenzene U 0.137 1.00 1 04/07/2023 22:49 WG2038215
Hexachloro-1,3-butadiene U 0.337 1.00 1 04/07/2023 22:49 WG2038215
Isopropylbenzene U 0.105 1.00 1 04/07/2023 22:49 WG2038215
p-Isopropyltoluene U 0.120 1.00 1 04/07/2023 22:49 WG2038215
2-Butanone (MEK)1.59 J 1.19 10.0 1 04/07/2023 22:49 WG2038215
Methylene Chloride 1.25 J 0.430 5.00 1 04/07/2023 22:49 WG2038215
4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 04/07/2023 22:49 WG2038215
Methyl tert-butyl ether U 0.101 1.00 1 04/07/2023 22:49 WG2038215
Naphthalene U 1.00 5.00 1 04/07/2023 22:49 WG2038215
n-Propylbenzene U 0.0993 1.00 1 04/07/2023 22:49 WG2038215
Styrene U 0.118 1.00 1 04/07/2023 22:49 WG2038215
1,1,1,2-Tetrachloroethane U 0.147 1.00 1 04/07/2023 22:49 WG2038215
1,1,2,2-Tetrachloroethane U 0.133 1.00 1 04/07/2023 22:49 WG2038215
Tetrachloroethene U 0.300 1.00 1 04/07/2023 22:49 WG2038215
Toluene U 0.278 1.00 1 04/07/2023 22:49 WG2038215
1,2,3-Trichlorobenzene U 0.230 1.00 1 04/07/2023 22:49 WG2038215
1,2,4-Trichlorobenzene U 0.481 1.00 1 04/07/2023 22:49 WG2038215
1,1,1-Trichloroethane U 0.149 1.00 1 04/07/2023 22:49 WG2038215
1,1,2-Trichloroethane U 0.158 1.00 1 04/07/2023 22:49 WG2038215
Trichloroethene U 0.190 1.00 1 04/07/2023 22:49 WG2038215
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 11 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 11 of 20
SAMPLE RESULTS - 04
L1601553
FB-1
Collected date/time: 03/31/23 10:50
Volatile Organic Compounds (GC/MS) by Method 6200B-2011
Result Qualifier MDL RDL Dilution Analysis Batch
Analyte ug/l ug/l ug/l date / time
Trichlorofluoromethane U 0.160 5.00 1 04/07/2023 22:49 WG2038215
1,2,3-Trichloropropane U 0.237 2.50 1 04/07/2023 22:49 WG2038215
1,2,4-Trimethylbenzene U 0.322 1.00 1 04/07/2023 22:49 WG2038215
1,3,5-Trimethylbenzene U 0.104 1.00 1 04/07/2023 22:49 WG2038215
Vinyl chloride U 0.234 1.00 1 04/07/2023 22:49 WG2038215
o-Xylene U 0.174 1.00 1 04/07/2023 22:49 WG2038215
m&p-Xylenes U 0.430 2.00 1 04/07/2023 22:49 WG2038215
(S) Toluene-d8 107 80.0-120 04/07/2023 22:49 WG2038215
(S) 4-Bromofluorobenzene 99.2 77.0-126 04/07/2023 22:49 WG2038215
(S) 1,2-Dichloroethane-d4 101 70.0-130 04/07/2023 22:49 WG2038215
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 12 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 12 of 20
QUALITY CONTROL SUMMARYWG2038215
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1601553-01,02,03,04
Method Blank (MB)
(MB) R3911439-3 04/07/23 19:11
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
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 13 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 13 of 20
QUALITY CONTROL SUMMARYWG2038215
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1601553-01,02,03,04
Method Blank (MB)
(MB) R3911439-3 04/07/23 19:11
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 107 80.0-120
(S) 4-Bromofluorobenzene 98.3 77.0-126
(S) 1,2-Dichloroethane-d4 100 70.0-130
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3911439-1 04/07/23 18:10 • (LCSD) R3911439-2 04/07/23 18:30
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 25.6 21.1 102 84.4 19.0-160 19.3 27
Acrolein 25.0 24.7 27.4 98.8 110 10.0-160 10.4 26
Acrylonitrile 25.0 24.4 23.2 97.6 92.8 55.0-149 5.04 20
Benzene 5.00 4.60 4.50 92.0 90.0 70.0-123 2.20 20
Bromobenzene 5.00 4.61 4.55 92.2 91.0 73.0-121 1.31 20
Bromodichloromethane 5.00 4.64 4.54 92.8 90.8 75.0-120 2.18 20
Bromoform 5.00 4.29 4.21 85.8 84.2 68.0-132 1.88 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 14 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 14 of 20
QUALITY CONTROL SUMMARYWG2038215
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1601553-01,02,03,04
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3911439-1 04/07/23 18:10 • (LCSD) R3911439-2 04/07/23 18:30
Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits
Analyte ug/l ug/l ug/l %%%%%
Bromomethane 5.00 4.43 4.78 88.6 95.6 10.0-160 7.60 25
n-Butylbenzene 5.00 4.74 4.78 94.8 95.6 73.0-125 0.840 20
sec-Butylbenzene 5.00 4.76 4.63 95.2 92.6 75.0-125 2.77 20
tert-Butylbenzene 5.00 4.80 4.70 96.0 94.0 76.0-124 2.11 20
Carbon tetrachloride 5.00 4.51 4.11 90.2 82.2 68.0-126 9.28 20
Chlorobenzene 5.00 4.69 4.72 93.8 94.4 80.0-121 0.638 20
Chlorodibromomethane 5.00 4.57 4.51 91.4 90.2 77.0-125 1.32 20
Chloroethane 5.00 4.14 3.90 82.8 78.0 47.0-150 5.97 20
Chloroform 5.00 4.67 4.50 93.4 90.0 73.0-120 3.71 20
Chloromethane 5.00 4.07 3.93 81.4 78.6 41.0-142 3.50 20
2-Chlorotoluene 5.00 4.64 4.52 92.8 90.4 76.0-123 2.62 20
4-Chlorotoluene 5.00 4.72 4.77 94.4 95.4 75.0-122 1.05 20
1,2-Dibromo-3-Chloropropane 5.00 4.46 4.42 89.2 88.4 58.0-134 0.901 20
1,2-Dibromoethane 5.00 4.97 4.94 99.4 98.8 80.0-122 0.605 20
Dibromomethane 5.00 4.74 4.53 94.8 90.6 80.0-120 4.53 20
1,2-Dichlorobenzene 5.00 4.68 4.66 93.6 93.2 79.0-121 0.428 20
1,3-Dichlorobenzene 5.00 4.67 4.65 93.4 93.0 79.0-120 0.429 20
1,4-Dichlorobenzene 5.00 4.75 4.63 95.0 92.6 79.0-120 2.56 20
Dichlorodifluoromethane 5.00 5.19 4.39 104 87.8 51.0-149 16.7 20
1,1-Dichloroethane 5.00 4.68 4.57 93.6 91.4 70.0-126 2.38 20
1,2-Dichloroethane 5.00 4.49 4.39 89.8 87.8 70.0-128 2.25 20
1,1-Dichloroethene 5.00 4.27 4.03 85.4 80.6 71.0-124 5.78 20
cis-1,2-Dichloroethene 5.00 4.62 4.52 92.4 90.4 73.0-120 2.19 20
trans-1,2-Dichloroethene 5.00 4.46 4.38 89.2 87.6 73.0-120 1.81 20
1,2-Dichloropropane 5.00 4.84 4.65 96.8 93.0 77.0-125 4.00 20
1,1-Dichloropropene 5.00 4.61 4.26 92.2 85.2 74.0-126 7.89 20
1,3-Dichloropropane 5.00 4.96 4.84 99.2 96.8 80.0-120 2.45 20
2,2-Dichloropropane 5.00 4.19 4.31 83.8 86.2 58.0-130 2.82 20
Di-isopropyl ether 5.00 4.69 4.57 93.8 91.4 58.0-138 2.59 20
Ethylbenzene 5.00 4.65 4.62 93.0 92.4 79.0-123 0.647 20
Hexachloro-1,3-butadiene 5.00 4.50 4.54 90.0 90.8 54.0-138 0.885 20
Isopropylbenzene 5.00 4.69 4.63 93.8 92.6 76.0-127 1.29 20
p-Isopropyltoluene 5.00 4.83 4.82 96.6 96.4 76.0-125 0.207 20
2-Butanone (MEK)25.0 25.7 23.9 103 95.6 44.0-160 7.26 20
Methylene Chloride 5.00 4.73 4.69 94.6 93.8 67.0-120 0.849 20
4-Methyl-2-pentanone (MIBK)25.0 23.9 23.2 95.6 92.8 68.0-142 2.97 20
Methyl tert-butyl ether 5.00 4.61 4.57 92.2 91.4 68.0-125 0.871 20
Naphthalene 5.00 4.48 4.60 89.6 92.0 54.0-135 2.64 20
n-Propylbenzene 5.00 4.84 4.72 96.8 94.4 77.0-124 2.51 20
Styrene 5.00 4.61 4.62 92.2 92.4 73.0-130 0.217 20
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 15 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 15 of 20
QUALITY CONTROL SUMMARYWG2038215
Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1601553-01,02,03,04
Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD)
(LCS) R3911439-1 04/07/23 18:10 • (LCSD) R3911439-2 04/07/23 18:30
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 4.69 4.71 93.8 94.2 75.0-125 0.426 20
1,1,2,2-Tetrachloroethane 5.00 4.93 5.02 98.6 100 65.0-130 1.81 20
Tetrachloroethene 5.00 4.83 4.50 96.6 90.0 72.0-132 7.07 20
Toluene 5.00 4.72 4.54 94.4 90.8 79.0-120 3.89 20
1,2,3-Trichlorobenzene 5.00 4.52 4.58 90.4 91.6 50.0-138 1.32 20
1,2,4-Trichlorobenzene 5.00 4.48 4.73 89.6 94.6 57.0-137 5.43 20
1,1,1-Trichloroethane 5.00 4.64 4.37 92.8 87.4 73.0-124 5.99 20
1,1,2-Trichloroethane 5.00 4.79 4.83 95.8 96.6 80.0-120 0.832 20
Trichloroethene 5.00 4.76 4.40 95.2 88.0 78.0-124 7.86 20
Trichlorofluoromethane 5.00 4.44 3.86 88.8 77.2 59.0-147 14.0 20
1,2,3-Trichloropropane 5.00 5.13 5.04 103 101 73.0-130 1.77 20
1,2,4-Trimethylbenzene 5.00 4.60 4.67 92.0 93.4 76.0-121 1.51 20
1,3,5-Trimethylbenzene 5.00 4.67 4.56 93.4 91.2 76.0-122 2.38 20
Vinyl chloride 5.00 4.62 4.26 92.4 85.2 67.0-131 8.11 20
o-Xylene 5.00 4.77 4.60 95.4 92.0 80.0-122 3.63 20
m&p-Xylenes 10.0 9.49 9.46 94.9 94.6 80.0-122 0.317 20
(S) Toluene-d8 105 106 80.0-120
(S) 4-Bromofluorobenzene 99.2 101 77.0-126
(S) 1,2-Dichloroethane-d4 102 101 70.0-130
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 16 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 16 of 20
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.
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 17 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 17 of 20

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
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 07:05 18 of 20
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
ATC Group Services LLC L1601553 04/11/23 14:05 18 of 20