WS-3988_13356_CA_RMR_20230608

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina 27604
Telephone [phone]
Fax [phone]
www.oneatlas.com

June 8, 2023

Mr. Doug Whitmire
North Carolina Department of Environmental Quality
Winston-Salem Regional Office
Division of Waste Management - UST Section
450 West Hanes Mill Road, Suite 300
Winston-Salem, North Carolina 27105

Re: Groundwater Monitoring Report
Former Liberty BP
248 Greensboro Road
Liberty, Randolph County, North Carolina
NCDEQ Incident No. 13356

Dear Mr. Whitmire:

ATC Associates of North Carolina, P.C. (ATC), on behalf of Cenama, LLC, is submitting this
Groundwater Monitoring Report to document biosock maintenance, the recent groundwater
sampling event, and summary of laboratory analytical data.

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

Sincerely,

ATC Associates of North Carolina, P.C.

Maureen Jackson, P.G.
Senior Project Manager

cc: Ms. Greta Stanley, Cenama, LLC

Groundwater Monitoring Report
Former Liberty BP
248 Greensboro Road
Liberty, Randolph County, North Carolina
June 8, 2023

Groundwater Monitoring Report
Former Liberty BP
248 Greensboro Road
Liberty, Randolph County, North Carolina
NCDEQ Incident No. 13356
Latitude: 34" 51' 24" North
Longitude: 79" 34' 21" West
PreparedBy: ft
i *\,\/1 | trt P nrr.rs$hrcu-u
Maureen Jackson, P.G.
Senior Project Manager
N.C. Licensed Geologist No. 2312
Submitted To:
North Carolina Department of Environmental
Quality
Division of Waste Management - UST Section
Winston-Salem Regional Office
450 West Hanes Mill Road, Suite 300
Winston-Salem, Nofth Carolina 27 105
On Behalf Of:
Cenama, LLC
123 Shipyard Boulevard
Wilmington, North Carolina 28412
Phone: [phone]
Prepared By:
ATC Associates of North Carolina, P.C.
2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina 27 604
Phone: [phone]
Fax: [phone]
June 8. 2023
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sis,f,E

TABLE OF CONTENTS

1.0 INTRODUCTION........................................................................................................1
2.0 SITE BACKGROUND ................................................................................................1
3.0 GROUNDWATER MONITORING ..........................................................................2
3.1 Biosock Installation and Maintenance .................................................................2
3.2 Groundwater Elevations.......................................................................................2
3.3 Groundwater Analytical Results ..........................................................................3
3.4 Water Supply Well Analytical Results ................................................................3

4.0 CONCLUSIONS ..........................................................................................................4
TABLES
Table 1 Groundwater Elevations and Well Construction Details
Table 2 Historical Groundwater Elevation Data
Table 3 Groundwater Analytical Results
Table 4 Historical Groundwater Analytical Results
Table 5 Select Natural Attenuation Measurements
Table 6 Historical Water Supply Well Analytical Results

FIGURES
Figure 1 Topographic Map
Figure 2 Site Map
Figure 3 Dissolved Contaminants of Concern

APPENDICES

Appendix A Laboratory Analytical Results
Groundwater Monitoring Report June 8, 2023
Former Liberty BP NCDEQ Incident #13356
1

1.0 INTRODUCTION
ATC Associates of North Carolina, P.C. (ATC), on behalf of Cenama, LLC (Worsley), is
submitting this sampling report for the Former Liberty BP located at 248 Greensboro Road, in
Liberty, Randolph County, North Carolina (Incident # 13356). The property is currently an office
building. Historically, the property operated as a retail fuel outlet and service station. A site
topographic map is presented as Figure 1 and site map is presented as Figure 2. This report
includes the results of the laboratory analytical results for the groundwater sampling event
performed on May 24, 2023.

2.0 SITE BACKGROUND
The Former Liberty BP (Facility ID No. 0-018175) is currently an office building. The site is
located at 248 Greensboro Road, Liberty, North Carolina. Three gasoline, one kerosene, one #2
fuel oil, and one used-oil underground storage tanks (USTs) and their appurtenances were
removed on October 25, 1994. The cover at the site consists of asphalt around the driveway and
primary site building and concrete in the locations of the former dispenser islands and USTs.
The side and rear of the property are covered in grass and landscaped areas. The site is classified
by the town of Liberty as Commercial (B-2). Areas surrounding the site are also classified as
Commercial (B-2). Properties beyond the site are mainly a mix of transportation and
commercial areas.

On October 25, 1994, CBM (SEPS) personnel conducted an UST closure at the facility. CBM
submitted a UST Closure Report on November 29, 1994.

On January 5, 1995, Philip R. Thompson P.G. submitted a UST Closure Report, on behalf of
Worsley. The UST Closure Report was followed by a Phase I Limited Site Assessment (LSA) on
March 2, 2006.

On December 15, 1997, Clark Environmental Services (CES) submitted a Comprehensive Site
Assessment.

On January 14, 2000, CES submitted a Corrective Action Plan.
Groundwater Monitoring Report June 8, 2023
Former Liberty BP NCDEQ Incident #13356

2

On July 5, 2001, Delta Environmental Consultants (Delta) submitted a Pre-Corrective Action
Plan Monitoring report. This report was followed by subsequent reports dated July 5, 2001, and
April, 29, 2002.

On January 30, 2003, Delta submitted a Correction Action Plan.

On December 12, 2003, Delta submitted a Revised Soil Excavation Addendum. This was
followed by Soil Excavation Letter Report on May 20, 2004.

The NCDEQ then requested quarterly natural attenuation monitoring of the site. Between 2008
and 2014, Best Geological performed quarterly groundwater sampling and reporting at the
facility.

In 2014, Worsley contracted ATC to manage the environment monitoring and remediation for
the Former Liberty BP.

This report includes the laboratory analytical results for the groundwater sampling event performed
on May 24, 2023, as well as the installation and maintenance of Biosocks in monitoring wells
MW-1R and MW-4R.

3.0 GROUNDWATER MONITORING
3.1 Biosock Installation
On February 21, 2023 and May 24, 2023, ATC personnel installed new Biosocks in monitoring
wells MW-1R and MW-4R to assist with natural attenuation activities.

3.2 Groundwater Elevations
On May 24, 2023, ATC collected static water level measurements from monitoring wells
MW-1R and MW-4R.

Depths to water measurements were collected using an electronic oil/water interface probe. The
groundwater depths were converted to relative elevations using an assumed datum of 100 feet
Groundwater Monitoring Report June 8, 2023
Former Liberty BP NCDEQ Incident #13356

3

relative to an arbitrary on-site benchmark. Monitoring well construction information and depth to
water measurements are included in Table 1. A groundwater elevation contour map could not be
generated for this sampling event as only two monitoring wells were measured. Historically,
groundwater flow has been toward the southeast. Historical groundwater elevation data are
included in Table 2.

3.3 Groundwater Analytical Results
On May 24, 2023, groundwater samples were collected from monitoring wells MW-1R and
MW-4R. The monitoring wells were purged prior to sampling by removing a minimum of three
well volumes of water from each well. After allowing sufficient time for recharge, a
representative groundwater sample was collected from each well using a new, disposable Teflon
bailer. Upon collection, the groundwater samples were placed into laboratory-approved
containers, packed in ice and delivered under chain-of-custody to SGS North America in Scott,
Louisiana for analyses. Groundwater samples were analyzed for volatile organic compounds
(VOCs) via EPA Method 602 including methyl tertiary-butyl ether (MTBE). A summary of the
recent groundwater analytical data is presented in Table 3 and a historical summary of
groundwater analytical data is presented in Table 4. Select natural attenuation measurements are
provided in Table 5.

The laboratory analytical results from the May 2023 sampling event indicate that dissolved
benzene and naphthalene concentrations were detected above respective 2L Standards in the
groundwater samples collected from monitoring well MW-1R and MW-4R. Dissolved target
compound concentrations continue to decrease through time in monitoring wells MW-1R and
MW-4R. Dissolved contaminants of concern are provided as Figure 3. A copy of the laboratory
report and chain of custody documents are included as Appendix A.

3.4 Water Supply Well Analytical Results
On May 24, 2023, a sample was collected from the nearby municipal water supply well (sample
ID WSW-2). The sample was collected into laboratory-approved containers, packed in ice and
delivered under chain-of-custody SGS North America in Scott, Louisiana, for analyses.
Groundwater samples were analyzed for volatile organic compounds (VOCs) via EPA Method
Groundwater Monitoring Report June 8, 2023
Former Liberty BP NCDEQ Incident #13356

4

6200B and Massachusetts Department of Environmental Protection (MADEP) method for Volatile
Petroleum Hydrocarbons (VPH). Dissolved 1,1-Dichloroethene, 1,1-Dichloroethane,
cis-1,2-Dichloroethene, MTBE, and trichloroethene concentrations were detected above the
laboratory method detection limits in the groundwater sample collected from water supply well
WSW-2. The detected concentrations were below the established Drinking Water Standards. A
historical summary of groundwater analytical data for the water supply well is presented in Table 6.

It should be noted most of these compounds are generally not associated with petroleum releases.

4.0 CONCLUSIONS

ATC has performed a groundwater sampling event at the Former Liberty BP in Liberty, North
Carolina. Based on field activities, observations, and groundwater analytical results, ATC
concludes the following:
• Depth to groundwater measurements ranged from 16.89 feet to 17.16 feet below ground
surface in MW-1R and MW-4R, respectively. The inferred shallow groundwater flow
direction across the site is to the southeast; and
• Dissolved benzene and naphthalene concentrations were detected above established 2L
Standards in the groundwater samples collected from monitoring wells MW-1R and MW-4R;
• Dissolved target compound concentrations have continued to decrease through time in
monitoring wells MW-1R and MW-4R;
• Biosocks have been installed and maintained in wells MW-1R and MW-4R to assist with
natural attenuation activities; and
• Dissolved target compound concentrations were detected above laboratory MDLs in the
groundwater sample collected from water supply well WSW-2.

Based on the groundwater analytical results, ATC recommends the following:
• Continue annual sampling of monitoring wells MW-1R and MW-4R; and,
• Quarterly maintenance and replacement of Biosocks in monitoring wells MW-1R and MW-4R.

TABLES
TABLE 1
GROUNDWATER ELEVATIONS AND WELL CONSTRUCTION DETAILS
FORMER LIBERTY BP
248 GREENSBORO ROAD
LIBERTY, RANDOLPH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 13356
Depth of
Water (feet)
Depth to
LNAPL (feet)
Groundwater
Elevation (feet)
MW-1R Unknown 2 inch Unknown 30.0 97.76 16.89 --80.87
MW-3Ra Unknown 2 inch Unknown 30.0 96.11
MW-4R Unknown 2 inch Unknown 30.0 102.02 17.16 --84.86
MW-5 Unknown 2 inch Unknown 35.5 100.56
MW-7A Unknown 2 inch Unknown 34.0 93.24
MW-8 Unknown 2 inch Unknown 30.0 94.02
MW-9 Unknown 2 inch Unknown 34.0 99.53
MW-10 Unknown 2 inch Unknown 33.0 99.31
MW-11 Unknown 2 inch Unknown 33.5 95.26
MW-12 Unknown 2 inch Unknown 40.0 97.32
T-2R Unknown 2 inch Unknown 70.0 101.88
Notes:
1. Elevations are referenced to an arbitrary on-site benchmark of 100.00 feet.
2. Total well depths measured from top of casing.
Not Measured
Not Measured
Date Measured: 5/24/23
Monitoring
Well ID
Date
Installed
Well
Casing
Diameter
(Inches)
Screened
Interval
(feet)
Depth of Well
(feet)
Top of Casing
(feet)
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
TABLE 2
HISTORICAL GROUNDWATER ELEVATION DATA
FORMER LIBERTY BP
248 GREENSBORO ROAD
LIBERTY, RANDOLPH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 13356
Well No.Date
Top of
Casing
Elevation
(Feet)
Depth to
Water
(Feet)
Depth to
LNAPL
(Feet)
Groundwater
Elevation (Feet)
6/11/2013 24.15 --73.61
6/3/2014 20.17 --77.59
9/25/2014 23.73 --74.03
3/11/2015 23.16 --74.60
9/24/2015 25.98 --71.78
3/7/2016 19.30 --78.46
10/24/2016 21.56 --76.20
5/24/2017 21.08 --76.68
11/9/2017 27.01 --70.75
5/8/2018 22.65 --75.11
11/1/2018 20.87 --76.89
5/31/2019 15.43 --82.33
11/7/2019 19.85 --77.91
5/5/2020 13.42 --84.34
11/24/2020 13.77 --83.99
5/3/2021 12.04 --85.72
11/3/2021 18.55 --79.21
5/18/2022 16.73 --81.03
11/7/2022 21.98 --75.78
5/24/2023 16.89 --80.87
6/11/2013 23.49 --72.62
6/3/2014 20.10 --76.01
9/25/2014
3/11/2015
9/24/2015 26.23 --69.88
3/7/2016 19.38 --76.73
10/24/2016 21.98 --74.13
5/24/2017 21.51 --74.60
11/9/2017 26.95 --69.16
5/8/2018 22.41 --73.70
11/1/2018 20.64 --75.47
5/31/2019 15.32 --80.79
11/7/2019 19.72 --76.39
6/11/2013 25.32 --76.70
6/3/2014 20.59 --81.43
9/25/2014 23.32 --78.70
3/11/2015 23.70 --78.32
9/24/2015 25.61 --76.41
3/7/2016 19.82 --82.20
10/24/2016 21.57 --80.45
5/24/2017 21.12 --80.90
11/9/2017 26.65 --75.37
5/8/2018 23.08 --78.94
11/1/2018 21.48 --80.54
5/31/2019 15.80 --86.22
11/7/2019 20.16 --81.86
5/5/2020 13.93 --88.09
11/24/2020 13.90 --88.12
5/3/2021 12.82 --89.20
11/3/2021 18.96 --83.06
5/18/2022 17.33 --84.69
11/7/2022 22.07 --76.70
5/24/2023 17.16 --84.86
6/11/2013 22.54 --72.72
6/3/2014 18.08 --77.18
9/25/2014 21.23 --74.03
3/11/2015 21.43 --73.83
9/24/2015 23.04 --72.22
3/7/2016 17.49 --77.77
10/24/2016 19.36 --75.90
5/24/2017 18.90 --76.36
11/9/2017 23.91 --71.35
5/8/2018 20.68 --74.58
11/1/2018 18.93 --76.33
5/31/2019 13.43 --81.83
11/7/2019 18.08 --77.18
Notes:
1. Elevations are referenced to an arbitrary on-site benchmark of 100.00 feet.
2. Data prior to June 2013 is located in previous reports on file at NCDEQ.
MW-11
MW-4R
MW-3Ra
MW-1R 97.76
102.02
96.11
Well Not Measured since 2019
95.26
Well Not Measured since 2019
Unable to Locate
Unable to Locate
TABLE 3
GROUNDWATER ANALYTICAL RESULTS
FORMER LIBERTY BP
248 GREENSBORO ROAD
LIBERTY, RANDOLPH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 13356
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MW-1R 5/24/2023 3.7 4.3 <1.0 1.5J 9.5J <8.0 <1.0 7.5J
MW-4R 5/24/2023 2.1 0.42J 0.63J 0.93J 4.08J 11.8 0.85J 7.1J
1 600 600 500 NE 20 70 6
5,000 80,000 260,000 50,000 NE 20,000 70,000 6,000
Notes:
1. Concentrations reported in micrograms per liter (ug/L).
2. NE = Not established.
3. Concentrations exceeding 2L Standards are in bold type.
4. J denotes concentration estimated by project laboratory.
EPA Method 602
NCAC 2L Groundwater Quality
Standards (ug/L)
Gross Contaminant Level (ug/L)
Sample ID Date Sampled
TABLE 4HISTORICAL GROUNDWATER ANALYTICAL RESULTS
FORMER LIBERTY BP248 GREENSBORO ROADLIBERTY, RANDOLPH COUNTY, NORTH CAROLINANCDEQ INCIDENT NO. 13356
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Well ID Sample Date ug/l ug/l ug/l ug/l ug/l ug/l ug/l6/11/2013 31.1 2 <1 33.5 <1 <1 29/16/2013 27.4 59.4 1.1 114.5 <1 <1 8.312/5/2013 38.7 <1 <1 15.2 <1 <1 3.6
3/11/2014 21.2 62.7 1.1 157 <1 <1 13.96/3/2014 20.8 256 7.8 555 <1 <1 58.19/25/2014 30.4 <1.0 <1.0 8.3 <1.0 <1.0 8.73/11/2015 20.7 2.2 <1.0 8.7 <1.0 <1.0 8.39/24/2015 10.4 <1.0 <1.0 13.6 <1.0 <1.0 19.73/7/2016 23 130 8.2 418 <1.0 ----10/24/2016 39 2.2 <1.0 37 <1.0 ----5/24/2017 22 2.5 <1.0 15.7 <1.0 ----
11/9/2017 1.1 4.7 32 3.0J <1.0 ----
5/8/2018 3.8 <1.0 2.8 14.0 <1.0 ----11/1/2018 20.5 2.3 <1.0 27.0 <8.0 <1.0 37.45/31/2019 9.1 127 1.3 24.7 <8.0 <1.0 80.211/7/2019 17.7 <1.0 <1.0 6.5 <8.0 <1.0 52.45/5/2020 8.9 71.0 1.3 72.0 <8.0 ----11/24/2020 4.3 73.7 2.1 24.7 <8.0 <1.0 50.75/3/2021 <1.0 223 <1.0 16.7 <8.0 <1.0 20511/3/2021 5.7 3.5J <1.0 <3.0 <8.0 <1.0 16.95/18/2022 6.04 32.2 <0.220 13.2 <0.140 <0.500 --
11/7/2022 1.7 0.88J <1.0 10.6 <8.0 <1.0 57.6
5/24/2023 3.7 4.3 <1.0 1.5J <8.0 <1.0 7.5J
6/11/2013 <2 <2 <2 <6 156 <2 <49/16/2013 <1 <1 <1 <3 86.5 <1 <212/5/2013 <1 <1 <1 <3 108 <1 <23/11/2014 4.6 <1 <1 25.9 22.3 <1 17.56/3/2014 9 <1 <1 46.7 25.7 <1 26.29/25/20143/11/20159/24/2015 2.2 8.3 <1.0 <3.0 4.2 <1.0 <2.03/7/2016 2.9 0.99J <1.0 6.2J 2.7J ----10/24/2016 3.2 <1.0 <1.0 12.92 1.8 ----5/24/2017 2.0 <1.0 <1.0 0.45J 1.2 ----
11/9/2017 7.6 10 1.5 0.88J 1.5 ----5/8/2018 <1.0 <1.0 3.7 <3.0 <1.0 ----11/1/2018 <1.0 <1.0 <1.0 <3.0 <8.0 <1.0 <105/31/2019 <1.0 <1.0 <1.0 <1.0 <8.0 <1.0 <1011/7/2019 <1.0 <1.0 <1.0 <3.0 <8.0 <1.0 <105/5/202011/24/2020
5/3/202111/3/20215/18/202211/7/2022
5/24/20236/11/2013 123 33.5 6.2 50.9 37.8 4.1 <29/16/2013 360 98.1 15.2 78.7 95.8 11.7 2012/5/2013 204 42.9 12.5 26 85.5 10.4 13.23/11/2014 48 5.2 2.1 14.3 21.2 1.8 2.36/3/2014 159 29 12.6 52.8 107 8.9 16.29/25/2014 186 53.6 20.2 40 107 11.9 17.13/11/2015 22.5 4.3 2.2 7.3 18.9 1.8 <2.09/24/2015 133 25.8 20.5 35.2 66.1 7.4 3.73/7/2016 68 4.3 2.3 28.5 24.0 ----10/24/2016 27 3.4J 2.7J 10.6J 31 ----
5/24/2017 18 1.9 1.1 3.84J 17 ----
11/9/2017 11 0.92J 2.8 4.4 11 ----5/8/2018 5.5 1.2 <1.0 <3.0 18 ----11/1/2018 10.7 1.4 1.3 4.1 21.6 2.1 <105/31/2019 72.1 8.1 2.6 17.4 74.5 4.5 <10
11/7/2019 28.7 8.4 4.9 8.9 46.6 4.3 <105/5/2020 32.0 1.4 <1.0 4.0 35.5 ----11/24/2020 36.7 2.2 1.1 5.6 33.7 2.1 <105/3/2021 18.1 <1.0 <1.0 <1.0 35.5 2.5 <10
11/3/2021 14.0 3.7 2.7 <3.0 49.5 4.3 8.5J
5/18/2022 3.45 4.11 1.02 1.01J 15.8 1.10 --
11/7/2022 8.4 1.7 1.6 2.2J 20.5 2.1 5.0J
5/24/2023 2.1 0.42J 0.63J 0.93J 11.8 0.85J 7.1J
6/11/2013 4.7 <1 <1 <3 <1 2.9 <29/16/2013 <1 <1 <1 <3 <1 <1 <212/5/2013 <1 <1 <1 <3 <1 <1 <23/11/2014 5.3 <1 <1 <3 <1 6.5 <2
6/3/2014 2.1 <1 <1 <3 <1 <1 <29/25/2014 <1.0 <1.0 <1.0 <3.0 <1.0 <1.0 <2.03/11/2015 44.2 <1.0 <1.0 1.0 <1.0 7.9 <2.09/24/2015 <1.0 <1.0 <1.0 <3.0 <1.0 <1.0 <2.0
3/7/2016 7.4 8.5 <1.0 <3.0 <1.0 ----10/24/2016 <1.0 <1.0 <1.0 <3.0 <1.0 ----5/24/2017 <1.0 3.4 1.4 <3.0 <1.0 ----11/9/2017 <1.0 <1.0 0.58J <3.00 <1.0 ----5/8/2018 <1.0 <1.0 <1.0 <3.0 <1.0 ----11/1/2018 <1.0 <1.0 <1.0 <3.0 <8.0 <1.0 <105/31/2019 <1.0 <1.0 <1.0 <1.0 <8.0 <1.0 <1011/7/2019 <1.0 <1.0 <1.0 <3.0 <8.0 <1.0 <105/5/202011/24/2020
5/3/202111/3/20215/18/202211/7/2022
5/24/2023
1 600 600 500 20 70 65,000 80,000 260,000 50,000 20,000 70,000 6,000
Notes:
1. Concentrations reported in micrograms per liter (ug/L).
2. Concentrations exceeding 2L Standards are in bold type.
4. J denotes estimated concentration by the laboratory.
Not Sampled
Not Sampled
Not Sampled
Gross Contaminant Level (ug/L)
3. Data prior to June 2013 is located in previous reports on file at NCDEQ.
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not SampledNot Sampled
Contaminant of Concern
Unable to Locate
Unable to Locate
NCAC 2L Groundwater Quality
MW-11
MW-4R
Not Sampled
Not Sampled
MW-3Ra
MW-1R
TABLE 5
SELECT NATURAL ATTENUATION MEASUREMENTS
FORMER LIBERTY BP
248 GREENSBORO ROAD
LIBERTY, RANDOLPH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 13356
Monitoring
Well ID Date pH (unitless)
Dissolved
Oxygen
(mg/L)
Specific
Conductance
(µs/cm)
Temperature
(Celsius)ORP (mV)
11/1/2018 4.51 0.96 112.9 18.9 207.8
5/31/2019 5.62 1.22 224 19.2 7.6
11/7/2019 4.47 1.19 90.8 18.7 -5.6
5/5/2020 8.17 1.13 229.4 18.2 20.3
11/24/2020 6.55 1.79 315.6 18.0 61.2
5/3/2021 6.08 1.56 379.2 18.0 5.1
11/3/2021 6.49 0.89 177 17.65 43.9
5/24/2023 3.81 4.87 101 21.04 94.2
11/1/2018 4.43 2.01 157.2 18.5 226.9
5/31/2019 5.27 2.86 189 18.7 153.3
11/7/2019 4.67 3.12 190.0 20.2 201.0
5/5/2020
11/24/2020
5/3/2021
11/3/2021
5/24/2023
11/1/2018 5.75 0.98 242.1 19.7 -27.5
5/31/2019 6.29 1.21 313 20.6 -78.5
11/7/2019 5.75 0.73 234.9 21.7 -76.8
5/5/2020 8.49 1.10 292.9 19.4 -75.6
11/24/2020 7.30 1.67 281.4 20.8 -26.0
5/3/2021 6.29 0.88 265.1 20.4 -33.0
11/3/2021 6.53 0.81 229 19.57 34.6
5/24/2023 5.31 1.71 174 21.42 -29.8
11/1/2018 4.78 3.04 157.1 17.8 232.2
5/31/2019 5.06 3.20 72 18.9 169.2
11/7/2019 4.56 3.93 69.7 19.1 207.5
5/5/2020
11/24/2020
5/3/2021
11/3/2021
5/24/2023
Not Measured
Not Measured
Not Measured
Not Measured
MW-1R
MW-3Ra
MW-4R
MW-11
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
TABLE 6
HISTORICAL WATER SUPPLY WELL ANALYTICAL RESULTS
FORMER LIBERTY BP
248 GREENSBORO ROAD
LIBERTY, RANDOLPH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 13356
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Well ID Sample Date ug/l ug/l ug/l ug/l ug/l ug/l ug/l ug/l
6/11/2013 ND ND 0.52 --ND ND ND 1.3
6/3/2014 ND ND <0.5 --ND ND ND 1.2
9/25/2014 ND ND 0.63 --0.38J ND 0.28J 1.4
3/11/2015 ND ND <0.25 --<0.25 ND <0.25 1.1
9/24/2015 ND ND 0.61 --0.27J ND 0.42J 1.2
3/7/2016 ND ND 0.43J --<0.50 ND <0.50 1.2
10/24/2016 ND ND 0.50 --0.19J ND 0.46J 1.2
5/24/2017 0.41J 0.58 <0.50 --<0.50 0.11J <0.50 1.1
11/9/2017 ND ND 0.55 --ND ND 0.35J 1.3
5/8/2018 ND ND 0.42J --ND ND <0.50 1.2
11/1/2018 ND ND <0.50 --ND ND <0.50 1.1
5/31/2019 <0.50 <0.20 <0.50 --<0.50 <0.50 <0.50 1.2
11/7/2019 ----------<8.0 ----
5/5/2020 <0.50 --0.58 --<0.50 <0.50 <0.50 1.5
11/24/2020 <0.50 --0.63 --<0.50 <0.50 <0.50 1.6
5/3/2021 <0.50 <0.20 <0.50 --<0.50 <0.50 <0.50 1.1
11/3/2021 <0.50 <0.50 0.45J 0.15J 0.21J 0.11J <0.50 1.6
5/18/2022 <1.50 <0.190 0.531 <0.240 <0.200 <0.140 0.241J 1.91
11/7/2022 <0.50 <0.20 0.45J <0.50 0.18J <0.50 <0.50 1.2
5/24/2023 <0.50 <0.20 0.39J 0.13J 0.17J 0.096J <0.50 1.3
NE NE 7 5 70 NE 5 5
Notes:
1. Concentrations reported in micrograms per liter (ug/L).
2. J denotes estimated concentration by the laboratory.
5. NA = Not Analyzed
U.S. EPA Drinking Water MCLs
3. ND denotes not detected above laboratory method detection limit.
4. Data prior to June 2013 is located in previous reports on file at DEQ.
EPA Method 6200 or EPA Method 602
Contaminant of Concern
WSW-2

FIGURES
WEST BOWM
A
N

A
V
E
N
U
E
NO
R
T
H

G
R
E
E
N
S
B
O
R
O

R
O
A
D
MW-8WELL
HOUSE
MW-7
MW-7AMW-3Ra
MW-1R
T-2R
MW-4R
FORMER
GASOLINE
UST BASIN
FORMER
DISPENSER
ISLAND
FORMER
HEATING OIL AND
WASTE OIL BASIN
MULTIPURPOSE
BUILDING MW-11
MW-5
MW-9
MW-12
WEST BOWM
A
N

A
V
E
N
U
E
NO
R
T
H

G
R
E
E
N
S
B
O
R
O

R
O
A
D
MW-8WELL
HOUSE
MW-7
MW-7AMW-3Ra
MW-1R
T-2R
MW-4R
FORMER
GASOLINE
UST BASIN
FORMER
DISPENSER
ISLAND
FORMER
HEATING OIL AND
WASTE OIL BASIN
MULTIPURPOSE
BUILDING MW-11
MW-5
MW-9
MW-12

APPENDIX A

LABORATORY ANALYTICAL RESULTS

06/06/23
Technical Report for
Atlas
Liberty BP 248 N. Greensboro Road, Liberty, NC
SGS Job Number: LA90919
Sampling Date: 05/24/23
Report to:
ATC Group Services LLC.
2725 East Millbrook Road Suite 121
Raleigh, NC 27604
[e-mail]
ATTN: Maureen Jackson
Total number of pages in report:
Certifications: LDEQ(2048), LDHH(LA150012), AR(14-045-04), AZ(AZ0805), FL(E87657), IL(200082), KY(#31),
NC(487), SC(73004001), NJ(LA007), TX(T104704186-18-16), WV(257)
This report shall not be reproduced, except in its entirety, without the written approval of SGS.
Test results relate only to samples analyzed.
SGS North America Inc.  500 Ambassador Caffery  Scott, LA 70583  tel: [phone]
Test results contained within this data package meet the requirements
of the National Environmental Laboratory Accreditation Program
and/or state specific certification programs as applicable.
Client Service contact: Rebecca Hebert 337-237-4775
Kesavalu Bagawandoss
General Manager
Scott, LA 06/06/23
e-Hardcopy 2.0
Automated Report
33
SGS is the sole authority for authorizing edits or modifications to this document.
Unauthorized modification of this report is strictly prohibited.
Review standard terms at: http://www.sgs.com/en/terms-and-conditions
The results set forth herein are provided by SGS North America Inc.
Please share your ideas about
how we can serve you better at:
[e-mail]
1 of 33
LA90919
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................5
3.1: LA90919-1: MW-1R ....................................................................................................6
3.2: LA90919-2: MW-4R ....................................................................................................7
3.3: LA90919-3: WSW-2 .....................................................................................................8
Section 4: Misc. Forms ............................................................................................................12
4.1: Chain of Custody ...........................................................................................................13
Section 5: MS Volatiles - QC Data Summaries .....................................................................17
5.1: Method Blank Summary ................................................................................................18
5.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................21
5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................24
Section 6: GC Volatiles - QC Data Summaries .....................................................................27
6.1: Method Blank Summary ................................................................................................28
6.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................30
6.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................32
6.4: Duplicate Summary .......................................................................................................33
1
2
3
4
5
6
2 of 33
LA90919
SGS North America Inc.
Sample Summary
Atlas
Job No:LA90919
Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample Collected Matrix Client
Number Date Time By Received Code Type Sample ID
This report contains results reported as ND = Not detected. The following applies:
Organics ND = Not detected above the MDL
LA90919-1 05/24/23 14:20 BB 05/26/23 AQ Ground Water MW-1R
LA90919-2 05/24/23 14:45 BB 05/26/23 AQ Ground Water MW-4R
LA90919-3 05/24/23 13:50 BB 05/26/23 AQ Ground Water WSW-2
3 of 33
LA90919
1
Summary of Hits Page 1 of 1
Job Number:LA90919
Account:Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Collected:05/24/23
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA90919-1 MW-1R
Benzene 3.7 1.0 0.39 ug/l EPA 602
Ethylbenzene 4.3 1.0 0.15 ug/l EPA 602
Naphthalene a 7.5 J 10 0.68 ug/l EPA 602
Xylenes (total)1.5 J 3.0 0.86 ug/l EPA 602
m,p-Xylene 1.1 J 2.0 0.36 ug/l EPA 602
LA90919-2 MW-4R
Benzene 2.1 1.0 0.39 ug/l EPA 602
Ethylbenzene 0.42 J 1.0 0.15 ug/l EPA 602
Isopropyl Ether 0.85 J 1.0 0.33 ug/l EPA 602
Methyl Tert Butyl Ether 11.8 8.0 1.3 ug/l EPA 602
Naphthalene a 7.1 J 10 0.68 ug/l EPA 602
Toluene 0.63 J 1.0 0.25 ug/l EPA 602
Xylenes (total)0.93 J 3.0 0.86 ug/l EPA 602
m,p-Xylene 0.62 J 2.0 0.36 ug/l EPA 602
LA90919-3 WSW-2
1,1-Dichloroethane 0.13 J 0.50 0.10 ug/l SM 6200B
1,1-Dichloroethylene 0.39 J 0.50 0.094 ug/l SM 6200B
cis-1,2-Dichloroethylene 0.17 J 0.50 0.11 ug/l SM 6200B
Methyl Tert Butyl Ether 0.096 J 0.50 0.068 ug/l SM 6200B
Trichloroethylene 1.3 0.50 0.18 ug/l SM 6200B
(a) Associated CCV outside of control limits high.
4 of 33
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2
SGS North America Inc.
Sample Results
Report of Analysis
Scott, LA
Section 3
5 of 33
LA90919
3
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-1R
Lab Sample ID:LA90919-1 Date Sampled:05/24/23
Matrix:AQ - Ground Water Date Received:05/26/23
Method:EPA 602 Percent Solids:n/a
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LP314529.D 1 05/27/23 23:36 JB n/a n/a GLP3638
Run #2
Purge Volume
Run #1 5.0 ml
Run #2
Full 602 List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 3.7 1.0 0.39 ug/l
108-90-7 Chlorobenzene ND 1.0 0.28 ug/l
95-50-1 1,2-Dichlorobenzene ND 1.0 0.30 ug/l
541-73-1 1,3-Dichlorobenzene ND 1.0 0.22 ug/l
106-46-7 1,4-Dichlorobenzene ND 1.0 0.24 ug/l
100-41-4 Ethylbenzene 4.3 1.0 0.15 ug/l
108-20-3 Isopropyl Ether ND 1.0 0.33 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 8.0 1.3 ug/l
91-20-3 Naphthalene a 7.5 10 0.68 ug/l J
108-88-3 Toluene ND 1.0 0.25 ug/l
1330-20-7 Xylenes (total)1.5 3.0 0.86 ug/l J
95-47-6 o-Xylene ND 1.0 0.53 ug/l
m,p-Xylene 1.1 2.0 0.36 ug/l J
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
540-36-3 1,4-Difluorobenzene 103%83-115%
460-00-4 4-Bromofluorobenzene 110%74-131%
(a) Associated CCV outside of control limits high.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
6 of 33
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3
3.
1
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-4R
Lab Sample ID:LA90919-2 Date Sampled:05/24/23
Matrix:AQ - Ground Water Date Received:05/26/23
Method:EPA 602 Percent Solids:n/a
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LP314528.D 1 05/27/23 23:05 JB n/a n/a GLP3638
Run #2
Purge Volume
Run #1 5.0 ml
Run #2
Full 602 List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 2.1 1.0 0.39 ug/l
108-90-7 Chlorobenzene ND 1.0 0.28 ug/l
95-50-1 1,2-Dichlorobenzene ND 1.0 0.30 ug/l
541-73-1 1,3-Dichlorobenzene ND 1.0 0.22 ug/l
106-46-7 1,4-Dichlorobenzene ND 1.0 0.24 ug/l
100-41-4 Ethylbenzene 0.42 1.0 0.15 ug/l J
108-20-3 Isopropyl Ether 0.85 1.0 0.33 ug/l J
1634-04-4 Methyl Tert Butyl Ether 11.8 8.0 1.3 ug/l
91-20-3 Naphthalene a 7.1 10 0.68 ug/l J
108-88-3 Toluene 0.63 1.0 0.25 ug/l J
1330-20-7 Xylenes (total)0.93 3.0 0.86 ug/l J
95-47-6 o-Xylene ND 1.0 0.53 ug/l
m,p-Xylene 0.62 2.0 0.36 ug/l J
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
540-36-3 1,4-Difluorobenzene 105%83-115%
460-00-4 4-Bromofluorobenzene 100%74-131%
(a) Associated CCV outside of control limits high.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
7 of 33
LA90919
3
3.
2
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:WSW-2
Lab Sample ID:LA90919-3 Date Sampled:05/24/23
Matrix:AQ - Ground Water Date Received:05/26/23
Method:SM 6200B Percent Solids:n/a
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0146676.D 1 05/26/23 17:03 MB n/a n/a V2K4117
Run #2
Purge Volume
Run #1 25.0 ml
Run #2
VOA Special List
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone ND 10 1.2 ug/l
71-43-2 Benzene ND 0.50 0.27 ug/l
108-86-1 Bromobenzene ND 0.50 0.18 ug/l
74-97-5 Bromochloromethane ND 0.50 0.12 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l
75-25-2 Bromoform ND 0.50 0.10 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l
56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l
108-90-7 Chlorobenzene ND 0.50 0.16 ug/l
75-00-3 Chloroethane ND 0.50 0.055 ug/l
67-66-3 Chloroform ND 0.50 0.094 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l
124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l
96-12-8 1,2-Dibromo-3-chloropropan a ND 0.50 0.13 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l
75-71-8 Dichlorodifluoromethane b ND 0.50 0.12 ug/l
541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l
95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l
106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l
75-34-3 1,1-Dichloroethane 0.13 0.50 0.10 ug/l J
107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l
75-35-4 1,1-Dichloroethylene 0.39 0.50 0.094 ug/l J
156-59-2 cis-1,2-Dichloroethylene 0.17 0.50 0.11 ug/l J
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l
78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
8 of 33
LA90919
3
3.
3
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:WSW-2
Lab Sample ID:LA90919-3 Date Sampled:05/24/23
Matrix:AQ - Ground Water Date Received:05/26/23
Method:SM 6200B Percent Solids:n/a
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
VOA Special List
CAS No.Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l
98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.23 ug/l
74-87-3 Methyl Chloride ND 0.50 0.066 ug/l
74-95-3 Methylene Bromide ND 0.50 0.11 ug/l
75-09-2 Methylene Chloride ND 0.50 0.080 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l
1634-04-4 Methyl Tert Butyl Ether 0.096 0.50 0.068 ug/l J
91-20-3 Naphthalene ND 0.50 0.10 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l
108-88-3 Toluene ND 0.50 0.29 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l
79-01-6 Trichloroethylene 1.3 0.50 0.18 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l
108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l
75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l
m,p-Xylene ND 1.0 0.34 ug/l
95-47-6 o-Xylene ND 0.50 0.15 ug/l
1330-20-7 Xylene (total)ND 0.50 0.16 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 94%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
9 of 33
LA90919
3
3.
3
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:WSW-2
Lab Sample ID:LA90919-3 Date Sampled:05/24/23
Matrix:AQ - Ground Water Date Received:05/26/23
Method:SM 6200B Percent Solids:n/a
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 102%70-130%
460-00-4 4-Bromofluorobenzene 100%70-130%
(a) Provisional certification.
(b) Associated CCV outside of control limits high, sample was ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
10 of 33
LA90919
3
3.
3
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:WSW-2
Lab Sample ID:LA90919-3 Date Sampled:05/24/23
Matrix:AQ - Ground Water Date Received:05/26/23
Method:MADEP VPH REV 2.1 Percent Solids:n/a
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 LE041328.D 1 06/02/23 16:35 JB n/a n/a GLE2418
Run #2
Purge Volume
Run #1 5.0 ml
Run #2
MA VPH list
CAS No.Compound Result RL MDL Units Q
C5- C8 Aliphatics (Unadj.)ND 100 50 ug/l
C9- C12 Aliphatics (Unadj.)ND 100 50 ug/l
C9- C10 Aromatics (Unadj.)ND 100 20 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
615-59-8 2,5-Dibromotoluene 102%70-130%
615-59-8 2,5-Dibromotoluene 103%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
11 of 33
LA90919
3
3.
3
SGS North America Inc.
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
 Chain of Custody
Scott, LA
Section 4
12 of 33
LA90919
4
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LA90919
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Page 3 of 4
15 of 33
LA90919
4
4.
1
SGS Sample Receipt Summary
Job Number:LA90919 Client:ATC
Date / Time Received:5/26/2023 9:25:00 AM Delivery Method:FedEx
Project:LIBERTY BP
4. No. Coolers:1
Airbill #'s:5707 9051 4008
Cooler Security
1. Custody Seals Present:
Y or N
2. Custody Seals Intact:
3. COC Present:
4. Smpl Dates/Time OK
2. Thermometer ID:
Cooler Temperature Y or N
1. Temp criteria achieved:
3. Cooler media:
IR001;
Ice (direct contact)
Quality Control Preservation Y or N N/A
1. Trip Blank present / cooler:
2. Trip Blank listed on COC:
3. Samples preserved properly:
4. VOCs headspace free:
Sample Integrity - Documentation Y or N
1. Sample labels present on bottles:
2. Container labeling complete:
3. Sample container label / COC agree:
Sample Integrity - Condition Y or N
1. Sample recvd within HT:
3. Condition of sample:
2. All containers accounted for:
Sample Integrity - Instructions
1. Analysis requested is clear:
2. Bottles received for unspecified tests
3. Sufficient volume recvd for analysis:
4. Compositing instructions clear:
5. Filtering instructions clear:
Intact
Y or N
Comments
Y or N N/A
Cooler Temps (Initial/Adjusted):#1: (0.8/0.8); IR001
LA90919: Chain of Custody
Page 4 of 4
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SGS North America Inc.
MS Volatiles
QC Data Summaries
Includes the following where applicable:
 Method Blank Summaries
 Blank Spike Summaries
 Matrix Spike and Duplicate Summaries
Scott, LA
Section 5
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Method Blank Summary Page 1 of 3
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4117-MB1 2K0146661.D 1 05/26/23 MB n/a n/a V2K4117
The QC reported here applies to the following samples:Method: SM 6200B
LA90919-3
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone ND 10 1.2 ug/l
71-43-2 Benzene ND 0.50 0.27 ug/l
108-86-1 Bromobenzene ND 0.50 0.18 ug/l
74-97-5 Bromochloromethane ND 0.50 0.12 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l
75-25-2 Bromoform ND 0.50 0.10 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l
56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l
108-90-7 Chlorobenzene ND 0.50 0.16 ug/l
75-00-3 Chloroethane ND 0.50 0.055 ug/l
67-66-3 Chloroform ND 0.50 0.094 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l
124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l
541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l
95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l
106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l
107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l
78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol 10.2 50 8.4 ug/l J
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
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Method Blank Summary Page 2 of 3
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4117-MB1 2K0146661.D 1 05/26/23 MB n/a n/a V2K4117
The QC reported here applies to the following samples:Method: SM 6200B
LA90919-3
CAS No.Compound Result RL MDL Units Q
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l
98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l
74-83-9 Methyl Bromide ND 0.50 0.23 ug/l
74-87-3 Methyl Chloride 0.17 0.50 0.066 ug/l J
74-95-3 Methylene Bromide ND 0.50 0.11 ug/l
75-09-2 Methylene Chloride ND 0.50 0.080 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l
91-20-3 Naphthalene ND 0.50 0.10 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l
108-88-3 Toluene ND 0.50 0.29 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l
79-01-6 Trichloroethylene ND 0.50 0.18 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l
108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l
75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l
m,p-Xylene ND 1.0 0.34 ug/l
95-47-6 o-Xylene ND 0.50 0.15 ug/l
1330-20-7 Xylene (total)ND 0.50 0.16 ug/l
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Method Blank Summary Page 3 of 3
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4117-MB1 2K0146661.D 1 05/26/23 MB n/a n/a V2K4117
The QC reported here applies to the following samples:Method: SM 6200B
LA90919-3
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 99%70-130%
2037-26-5 Toluene-D8 101%70-130%
460-00-4 4-Bromofluorobenzene 103%70-130%
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Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4117-BS1 2K0146658.D 1 05/26/23 MB n/a n/a V2K4117
V2K4117-BSD1 2K0146659.D 1 05/26/23 MB n/a n/a V2K4117
The QC reported here applies to the following samples:Method: SM 6200B
LA90919-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
67-64-1 Acetone 50 60.0 120 56.7 113 6 70-130/30
71-43-2 Benzene 20 17.3 87 17.2 86 1 70-130/30
108-86-1 Bromobenzene 20 16.9 85 17.1 86 1 70-130/30
74-97-5 Bromochloromethane 20 18.5 93 18.6 93 1 70-130/30
75-27-4 Bromodichloromethane 20 20.3 102 20.3 102 0 70-130/30
75-25-2 Bromoform 20 18.3 92 18.6 93 2 70-130/30
104-51-8 n-Butylbenzene 20 18.7 94 18.0 90 4 70-130/30
135-98-8 sec-Butylbenzene 20 17.8 89 17.2 86 3 70-130/30
98-06-6 tert-Butylbenzene 20 17.9 90 17.1 86 5 70-130/30
56-23-5 Carbon Tetrachloride 20 20.0 100 20.0 100 0 70-130/30
108-90-7 Chlorobenzene 20 16.4 82 16.6 83 1 70-130/30
75-00-3 Chloroethane 20 18.0 90 17.6 88 2 60-140/30
67-66-3 Chloroform 20 16.8 84 16.8 84 0 70-130/30
95-49-8 o-Chlorotoluene 20 16.9 85 16.5 83 2 70-130/30
106-43-4 p-Chlorotoluene 20 17.5 88 16.7 84 5 70-130/30
124-48-1 Dibromochloromethane 20 20.8 104 21.0 105 1 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 17.7 89 17.3 87 2 70-130/30
106-93-4 1,2-Dibromoethane 20 17.9 90 18.3 92 2 70-130/30
75-71-8 Dichlorodifluoromethane 20 32.3 162* a 32.0 160* a 1 60-140/30
541-73-1 m-Dichlorobenzene 20 16.8 84 16.3 82 3 70-130/30
95-50-1 o-Dichlorobenzene 20 17.0 85 16.6 83 2 70-130/30
106-46-7 p-Dichlorobenzene 20 16.5 83 16.1 81 2 70-130/30
75-34-3 1,1-Dichloroethane 20 18.7 94 18.4 92 2 70-130/30
107-06-2 1,2-Dichloroethane 20 16.4 82 16.3 82 1 70-130/30
75-35-4 1,1-Dichloroethylene 20 18.9 95 18.9 95 0 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 18.1 91 18.1 91 0 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 18.9 95 18.7 94 1 70-130/30
78-87-5 1,2-Dichloropropane 20 18.2 91 18.4 92 1 70-130/30
142-28-9 1,3-Dichloropropane 20 17.3 87 17.6 88 2 70-130/30
594-20-7 2,2-Dichloropropane 20 21.6 108 21.2 106 2 70-130/30
563-58-6 1,1-Dichloropropene 20 18.8 94 18.5 93 2 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 20.3 102 20.4 102 0 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 20.5 103 20.7 104 1 70-130/30
108-20-3 Di-Isopropyl Ether 20 19.3 97 19.3 97 0 70-130/30
64-17-5 Ethyl Alcohol 400 409 102 405 101 1 70-130/30
100-41-4 Ethylbenzene 20 17.4 87 17.3 87 1 70-130/30
* = Outside of Control Limits.
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Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4117-BS1 2K0146658.D 1 05/26/23 MB n/a n/a V2K4117
V2K4117-BSD1 2K0146659.D 1 05/26/23 MB n/a n/a V2K4117
The QC reported here applies to the following samples:Method: SM 6200B
LA90919-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
591-78-6 2-Hexanone 50 54.1 108 54.3 109 0 70-130/30
87-68-3 Hexachlorobutadiene 20 18.2 91 17.6 88 3 70-130/30
98-82-8 Isopropylbenzene 20 17.4 87 17.3 87 1 70-130/30
99-87-6 p-Isopropyltoluene 20 17.8 89 17.2 86 3 70-130/30
74-83-9 Methyl Bromide 20 19.2 96 19.0 95 1 60-140/30
74-87-3 Methyl Chloride 20 22.8 114 22.3 112 2 60-140/30
74-95-3 Methylene Bromide 20 17.6 88 17.4 87 1 70-130/30
75-09-2 Methylene Chloride 20 17.9 90 17.7 89 1 70-130/30
78-93-3 Methyl Ethyl Ketone 50 51.4 103 52.4 105 2 70-130/30
108-10-1 4-Methyl-2-pentanone 50 48.7 97 49.6 99 2 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 18.9 95 19.2 96 2 70-130/30
91-20-3 Naphthalene 20 19.9 100 19.5 98 2 70-130/30
103-65-1 n-Propylbenzene 20 17.8 89 17.2 86 3 70-130/30
100-42-5 Styrene 20 17.3 87 17.2 86 1 70-130/30
630-20-6 1,1,1,2-Tetrachloroethane 20 19.4 97 19.4 97 0 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 18.1 91 17.6 88 3 70-130/30
127-18-4 Tetrachloroethylene 20 16.2 81 16.4 82 1 70-130/30
108-88-3 Toluene 20 17.2 86 17.2 86 0 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 18.3 92 18.0 90 2 70-130/30
120-82-1 1,2,4-Trichlorobenzene 20 18.9 95 18.5 93 2 70-130/30
71-55-6 1,1,1-Trichloroethane 20 19.5 98 19.4 97 1 70-130/30
79-00-5 1,1,2-Trichloroethane 20 16.0 80 16.3 82 2 70-130/30
79-01-6 Trichloroethylene 20 18.5 93 18.4 92 1 70-130/30
75-69-4 Trichlorofluoromethane 20 19.4 97 19.2 96 1 60-140/30
96-18-4 1,2,3-Trichloropropane 20 19.2 96 19.5 98 2 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 17.8 89 17.1 86 4 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 18.0 90 17.5 88 3 70-130/30
108-05-4 Vinyl Acetate 20 24.3 122 24.6 123 1 70-130/30
75-01-4 Vinyl Chloride 20 19.4 97 19.1 96 2 60-140/30
m,p-Xylene 40 35.1 88 34.9 87 1 70-130/30
95-47-6 o-Xylene 20 17.4 87 17.4 87 0 70-130/30
1330-20-7 Xylene (total)60 52.4 87 52.3 87 0 70-130/30
* = Outside of Control Limits.
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Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4117-BS1 2K0146658.D 1 05/26/23 MB n/a n/a V2K4117
V2K4117-BSD1 2K0146659.D 1 05/26/23 MB n/a n/a V2K4117
The QC reported here applies to the following samples:Method: SM 6200B
LA90919-3
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 92%95%70-130%
2037-26-5 Toluene-D8 102%102%70-130%
460-00-4 4-Bromofluorobenzene 100%102%70-130%
(a) Outside control limits biased high. Analyte not detected in associated samples.
* = Outside of Control Limits.
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Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA90805-4MS 2K0146668.D 50 05/26/23 MB n/a n/a V2K4117
LA90805-4MSD 2K0146669.D 50 05/26/23 MB n/a n/a V2K4117
LA90805-4 2K0146667.D 20 05/26/23 MB n/a n/a V2K4117
The QC reported here applies to the following samples:Method: SM 6200B
LA90919-3
LA90805-4 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
67-64-1 Acetone ND 2500 1970 79 2500 1980 79 1 70-130/20
71-43-2 Benzene 1560 1000 2210 65* a 1000 2220 66* a 0 70-130/20
108-86-1 Bromobenzene ND 1000 832 83 1000 826 83 1 70-130/20
74-97-5 Bromochloromethane ND 1000 951 95 1000 947 95 0 70-130/20
75-27-4 Bromodichloromethane ND 1000 985 99 1000 978 98 1 70-130/20
75-25-2 Bromoform ND 1000 890 89 1000 951 95 7 70-130/20
104-51-8 n-Butylbenzene 25.3 1000 718 69* a 1000 754 73 5 70-130/20
135-98-8 sec-Butylbenzene 11.9 1000 667 66* a 1000 686 67* a 3 70-130/20
98-06-6 tert-Butylbenzene ND 1000 714 71 1000 733 73 3 70-130/20
56-23-5 Carbon Tetrachloride ND 1000 605 61* a 1000 638 64* a 5 70-130/20
108-90-7 Chlorobenzene ND 1000 768 77 1000 771 77 0 70-130/20
75-00-3 Chloroethane ND 1000 527 53* a 1000 502 50* a 5 60-140/20
67-66-3 Chloroform ND 1000 748 75 1000 751 75 0 70-130/20
95-49-8 o-Chlorotoluene ND 1000 742 74 1000 762 76 3 70-130/20
106-43-4 p-Chlorotoluene ND 1000 778 78 1000 807 81 4 70-130/20
124-48-1 Dibromochloromethane ND 1000 1030 103 1000 1050 105 2 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 1000 885 89 1000 916 92 3 70-130/20
106-93-4 1,2-Dibromoethane ND 1000 947 95 1000 955 96 1 70-130/20
75-71-8 Dichlorodifluoromethane ND 1000 579 58* a 1000 596 60 3 60-140/20
541-73-1 m-Dichlorobenzene ND 1000 775 78 1000 797 80 3 70-130/20
95-50-1 o-Dichlorobenzene ND 1000 827 83 1000 853 85 3 70-130/20
106-46-7 p-Dichlorobenzene ND 1000 782 78 1000 800 80 2 70-130/20
75-34-3 1,1-Dichloroethane ND 1000 782 78 1000 805 81 3 70-130/20
107-06-2 1,2-Dichloroethane ND 1000 847 85 1000 848 85 0 70-130/20
75-35-4 1,1-Dichloroethylene ND 1000 559 56* a 1000 576 58* a 3 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 1000 814 81 1000 833 83 2 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 1000 714 71 1000 732 73 2 70-130/20
78-87-5 1,2-Dichloropropane ND 1000 884 88 1000 881 88 0 70-130/20
142-28-9 1,3-Dichloropropane ND 1000 905 91 1000 919 92 2 70-130/20
594-20-7 2,2-Dichloropropane ND 1000 735 74 1000 774 77 5 70-130/20
563-58-6 1,1-Dichloropropene ND 1000 621 62* a 1000 634 63* a 2 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 1000 982 98 1000 1000 100 2 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 1000 1030 103 1000 1050 105 2 70-130/20
108-20-3 Di-Isopropyl Ether 6.0 J 1000 959 95 1000 967 96 1 70-130/20
64-17-5 Ethyl Alcohol ND 20000 17500 88 20000 20800 104 17 70-130/20
100-41-4 Ethylbenzene 232 1000 936 70 1000 947 72 1 70-130/20
* = Outside of Control Limits.
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Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA90805-4MS 2K0146668.D 50 05/26/23 MB n/a n/a V2K4117
LA90805-4MSD 2K0146669.D 50 05/26/23 MB n/a n/a V2K4117
LA90805-4 2K0146667.D 20 05/26/23 MB n/a n/a V2K4117
The QC reported here applies to the following samples:Method: SM 6200B
LA90919-3
LA90805-4 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
591-78-6 2-Hexanone ND 2500 2240 90 2500 2290 92 2 70-130/20
87-68-3 Hexachlorobutadiene ND 1000 641 64* a 1000 666 67* a 4 70-130/20
98-82-8 Isopropylbenzene 111 1000 796 69* a 1000 795 68* a 0 70-130/20
99-87-6 p-Isopropyltoluene ND 1000 688 69* a 1000 706 71 3 70-130/20
74-83-9 Methyl Bromide ND 1000 623 62 1000 703 70 12 60-140/20
74-87-3 Methyl Chloride 5.2 J 1000 777 77 1000 779 77 0 60-140/20
74-95-3 Methylene Bromide ND 1000 910 91 1000 916 92 1 70-130/20
75-09-2 Methylene Chloride ND 1000 868 87 1000 878 88 1 70-130/20
78-93-3 Methyl Ethyl Ketone ND 2500 2190 88 2500 2250 90 3 70-130/20
108-10-1 4-Methyl-2-pentanone ND 2500 2520 101 2500 2580 103 2 70-130/20
1634-04-4 Methyl Tert Butyl Ether 59.2 1000 1040 98 1000 1080 102 4 70-130/20
91-20-3 Naphthalene 28.1 1000 1060 103 1000 1100 107 4 70-130/20
103-65-1 n-Propylbenzene 312 1000 971 66* a 1000 996 68* a 3 70-130/20
100-42-5 Styrene ND 1000 820 82 1000 825 83 1 70-130/20
630-20-6 1,1,1,2-Tetrachloroethane ND 1000 925 93 1000 927 93 0 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 1000 933 93 1000 973 97 4 70-130/20
127-18-4 Tetrachloroethylene ND 1000 539 54* a 1000 547 55* a 1 70-130/20
108-88-3 Toluene 35.4 1000 772 74 1000 777 74 1 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 1000 905 91 1000 931 93 3 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 1000 906 91 1000 948 95 5 70-130/20
71-55-6 1,1,1-Trichloroethane ND 1000 659 66* a 1000 687 69* a 4 70-130/20
79-00-5 1,1,2-Trichloroethane ND 1000 848 85 1000 859 86 1 70-130/20
79-01-6 Trichloroethylene ND 1000 715 72 1000 732 73 2 70-130/20
75-69-4 Trichlorofluoromethane ND 1000 483 48* a 1000 495 50* a 2 60-140/20
96-18-4 1,2,3-Trichloropropane ND 1000 999 100 1000 1020 102 2 70-130/20
95-63-6 1,2,4-Trimethylbenzene 5.6 J 1000 770 76 1000 794 79 3 70-130/20
108-67-8 1,3,5-Trimethylbenzene ND 1000 746 75 1000 768 77 3 70-130/20
108-05-4 Vinyl Acetate ND 1000 1250 125 1000 1290 129 3 70-130/20
75-01-4 Vinyl Chloride ND 1000 511 51* a 1000 532 53* a 4 60-140/20
m,p-Xylene 83.1 2000 1570 74 2000 1580 75 1 70-130/20
95-47-6 o-Xylene 4.2 J 1000 789 78 1000 792 79 0 70-130/20
1330-20-7 Xylene (total)87.3 3000 2360 76 3000 2370 76 0 70-130/20
* = Outside of Control Limits.
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Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA90805-4MS 2K0146668.D 50 05/26/23 MB n/a n/a V2K4117
LA90805-4MSD 2K0146669.D 50 05/26/23 MB n/a n/a V2K4117
LA90805-4 2K0146667.D 20 05/26/23 MB n/a n/a V2K4117
The QC reported here applies to the following samples:Method: SM 6200B
LA90919-3
CAS No.Surrogate Recoveries MS MSD LA90805-4 Limits
17060-07-0 1,2-Dichloroethane-D4 98%96%96%70-130%
2037-26-5 Toluene-D8 103%103%103%70-130%
460-00-4 4-Bromofluorobenzene 103%100%102%70-130%
(a) Outside control limits due to matrix interference. Blank Spike meets acceptance criteria.
* = Outside of Control Limits.
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5
5.
3
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1
SGS North America Inc.
GC Volatiles
QC Data Summaries
Includes the following where applicable:
 Method Blank Summaries
 Blank Spike Summaries
 Matrix Spike and Duplicate Summaries
Scott, LA
Section 6
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Method Blank Summary Page 1 of 1
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2418-MB1 LE041327.D 1 06/02/23 JB n/a n/a GLE2418
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA90919-3
CAS No.Compound Result RL MDL Units Q
C5- C8 Aliphatics (Unadj.)ND 100 50 ug/l
C9- C12 Aliphatics (Unadj.)ND 100 50 ug/l
C9- C10 Aromatics (Unadj.)ND 100 20 ug/l
CAS No.Surrogate Recoveries Limits
615-59-8 2,5-Dibromotoluene 101%70-130%
615-59-8 2,5-Dibromotoluene 101%70-130%
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Method Blank Summary Page 1 of 1
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLP3638-MB1 LP314527.D 1 05/27/23 JB n/a n/a GLP3638
The QC reported here applies to the following samples:Method: EPA 602
LA90919-1, LA90919-2
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 1.0 0.39 ug/l
108-90-7 Chlorobenzene 0.41 1.0 0.28 ug/l J
95-50-1 1,2-Dichlorobenzene 1.4 1.0 0.30 ug/l
541-73-1 1,3-Dichlorobenzene 0.34 1.0 0.22 ug/l J
106-46-7 1,4-Dichlorobenzene 0.28 1.0 0.24 ug/l J
100-41-4 Ethylbenzene 0.43 1.0 0.15 ug/l J
108-20-3 Isopropyl Ether ND 1.0 0.33 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 8.0 1.3 ug/l
91-20-3 Naphthalene 26.1 10 0.68 ug/l B
108-88-3 Toluene ND 1.0 0.25 ug/l
1330-20-7 Xylenes (total)1.3 3.0 0.86 ug/l J
95-47-6 o-Xylene ND 1.0 0.53 ug/l
m,p-Xylene 0.83 2.0 0.36 ug/l J
CAS No.Surrogate Recoveries Limits
540-36-3 1,4-Difluorobenzene 102%83-115%
460-00-4 4-Bromofluorobenzene 102%74-131%
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6
6.
1
.
2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2418-BS1 LE041325.D 1 06/02/23 JB n/a n/a GLE2418
GLE2418-BSD1 LE041326.D 1 06/02/23 JB n/a n/a GLE2418
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA90919-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
C5- C8 Aliphatics (Unadj.)120 122 101 122 102 0 70-130/25
C9- C12 Aliphatics (Unadj.)120 122 101 116 96 5 70-130/25
C9- C10 Aromatics (Unadj.)40 41.4 104 41.2 103 0 70-130/25
CAS No.Surrogate Recoveries BSP BSD Limits
615-59-8 2,5-Dibromotoluene 102%103%70-130%
615-59-8 2,5-Dibromotoluene 103%104%70-130%
* = Outside of Control Limits.
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6
6.
2
.
1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLP3638-BS1 LP314525.D 1 05/27/23 JB n/a n/a GLP3638
GLP3638-BSD1 LP314526.D 1 05/27/23 JB n/a n/a GLP3638
The QC reported here applies to the following samples:Method: EPA 602
LA90919-1, LA90919-2
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
71-43-2 Benzene 50 51.2 102 49.9 100 3 88-115/10
108-90-7 Chlorobenzene 50 49.5 99 48.8 98 1 88-114/10
95-50-1 1,2-Dichlorobenzene 50 49.7 99 49.7 99 0 54-142/10
541-73-1 1,3-Dichlorobenzene 50 49.9 100 49.7 99 0 83-118/10
106-46-7 1,4-Dichlorobenzene 50 50.2 100 49.5 99 1 80-121/10
100-41-4 Ethylbenzene 50 49.6 99 48.4 97 2 87-114/10
108-20-3 Isopropyl Ether 50 49.8 100 49.8 100 0 83-117/10
1634-04-4 Methyl Tert Butyl Ether 50 49.3 99 50.8 102 3 68-130/19
91-20-3 Naphthalene 50 56.0 112 62.8 126 11 58-140/18
108-88-3 Toluene 50 50.6 101 48.9 98 3 88-114/10
1330-20-7 Xylenes (total)150 149 99 146 97 2 86-114/10
95-47-6 o-Xylene 50 49.2 98 48.5 97 1 87-115/10
m,p-Xylene 100 99.4 99 97.6 98 2 86-115/10
CAS No.Surrogate Recoveries BSP BSD Limits
540-36-3 1,4-Difluorobenzene 101%99%83-115%
460-00-4 4-Bromofluorobenzene 103%101%74-131%
* = Outside of Control Limits.
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6
6.
2
.
2
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA90919-2MS LP314540.D 20 05/28/23 JB n/a n/a GLP3638
LA90919-2MSD LP314541.D 20 05/28/23 JB n/a n/a GLP3638
LA90919-2 LP314528.D 1 05/27/23 JB n/a n/a GLP3638
The QC reported here applies to the following samples:Method: EPA 602
LA90919-1, LA90919-2
LA90919-2 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
71-43-2 Benzene 2.1 1000 1000 100 1000 1020 102 2 69-129/10
108-90-7 Chlorobenzene ND 1000 972 97 1000 996 100 2 76-122/10
95-50-1 1,2-Dichlorobenzene ND 1000 956 96 1000 1030 103 7 37-154/14
541-73-1 1,3-Dichlorobenzene ND 1000 944 94 1000 1030 103 9 67-129/12
106-46-7 1,4-Dichlorobenzene ND 1000 952 95 1000 1030 103 8 66-131/13
100-41-4 Ethylbenzene 0.42 J 1000 967 97 1000 988 99 2 75-121/10
108-20-3 Isopropyl Ether 0.85 J 1000 988 99 1000 1010 101 2 73-126/12
1634-04-4 Methyl Tert Butyl Ether 11.8 1000 1010 100 1000 1030 102 2 63-136/22
91-20-3 Naphthalene 7.1 J 1000 968 96 1000 1340 133 32* a 46-151/21
108-88-3 Toluene 0.63 J 1000 1000 100 1000 1010 101 1 69-130/10
1330-20-7 Xylenes (total)0.93 J 3000 2880 96 3000 2970 99 3 71-126/10
95-47-6 o-Xylene ND 1000 953 95 1000 985 99 3 72-126/11
m,p-Xylene 0.62 J 2000 1930 96 2000 1980 99 3 69-127/11
CAS No.Surrogate Recoveries MS MSD LA90919-2 Limits
540-36-3 1,4-Difluorobenzene 99%100%105%83-115%
460-00-4 4-Bromofluorobenzene 97%102%100%74-131%
(a) Outside control limits due to matrix interference. Blank Spike meets acceptance criteria.
* = Outside of Control Limits.
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Duplicate Summary Page 1 of 1
Job Number:LA90919
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA90908-1DUP LE041330.D 5 06/02/23 JB n/a n/a GLE2418
LA90908-1 LE041329.D 5 06/02/23 JB n/a n/a GLE2418
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA90919-3
LA90908-1 DUP
CAS No.Compound ug/l Q ug/l Q RPD Limits
C5- C8 Aliphatics (Unadj.)1890 1900 1 50
C9- C12 Aliphatics (Unadj.)2160 2170 0 50
C9- C10 Aromatics (Unadj.)1050 1060 1 50
CAS No.Surrogate Recoveries DUP LA90908-1 Limits
615-59-8 2,5-Dibromotoluene 102%102%70-130%
615-59-8 2,5-Dibromotoluene 104%104%70-130%
* = Outside of Control Limits.
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4
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1