WS-3988_13356_CA_RMR_20221203

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

December 3, 2022

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
December 3, 2022

Groundwater Monitoring Report
Former Liberfy BP
248 Greensboro Road
Liberty, Randolph County, North Carolina
NCDEQ Incident No. 13356
Latitude: 34" 5l' 24" North
Longitude: 79" 34'21" West
PreparedBy:
2312
Submitted To:
North Carolina Department of Environmental
Quality
Division of Waste Management - UST Section
Winston-Salem Regional Offi ce
450 West Hanes Mill Road, Suite 300
Winston-Salem, North 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.
609A Piner Road, Suite 115
Wilmington, North Carolina 28409
Phone: [phone]
Fax: [phone]
Maureen J
a,l$T$
December 3,2022

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 December 3, 2022
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 October 7, 2022.

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 December 3, 2022
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 November 7, 2022, 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 August 16, 2022 and November 7, 2022, ATC personnel installed new Biosocks in
monitoring wells MW-1R and MW-4R to assist with natural attenuation activities.

3.2 Groundwater Elevations
On November 7, 2022, 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 December 3, 2022
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 November 7, 2022, groundwater samples were collected from monitoring wells MW-1R and
MW-4R. Groundwater samples were collected 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 November 7, 2022 sampling event indicate that
dissolved benzene and naphthalene concentrations were detected above respective 2L Standards
in the groundwater sample collected from monitoring well MW-1R. Dissolved benzene and
MTBE concentrations were detected above respective 2L Standards in the groundwater sample
collected from monitoring well 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 November 7 2022, 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
6200B and Massachusetts Department of Environmental Protection (MADEP) method for Volatile
Petroleum Hydrocarbons (VPH). Dissolved 1,1-Dichloroethene, cis-1,2-Dichloroethene, and
Groundwater Monitoring Report December 3, 2022
Former Liberty BP NCDEQ Incident #13356

4

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 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 21.98 feet to 22.07 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 sample collected from monitoring well MW-1R;
• Dissolved benzene and MTBE concentrations were detected above established 2L Standards
in the groundwater sample collected from monitoring well 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 21.98 --75.78
MW-3Ra Unknown 2 inch Unknown 30.0 96.11
MW-4R Unknown 2 inch Unknown 30.0 102.02 22.07 --79.95
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
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
Date Measured: 11/7/22
Monitoring
Well ID
Date
Installed
Well
Casing
Diameter
(Inches)
Screened
Interval
(feet)
Depth of Well
(feet)
Top of Casing
(feet)
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
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
5/5/2020
11/24/2020
5/3/2021
11/3/2021
5/18/2022
11/7/2022
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 --79.95
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
5/5/2020
11/24/2020
5/3/2021
11/3/2021
5/18/2022
11/7/2022
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.
Not Measured
Not Measured
Unable to Locate
Unable to Locate
MW-11
Not Measured
Not Measured
MW-4R
MW-3Ra
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
Not Measured
MW-1R 97.76
96.11
102.02
95.26
Not Measured
Not Measured
TABLE 3
GROUNDWATER ANALYTICAL RESULTS
FORMER LIBERTY BP
248 GREENSBORO ROAD
LIBERTY, RANDOLPH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT NO. 13356
BenzeneEthylbenzeneTolueneTotal XylenesTotal BTEXMTBEIPENaphthaleneMW-1R 11/7/2022 1.7 0.88J <1.0 10.6 13.18J <8.0 <1.0 57.6
MW-4R 11/7/2022 8.4 1.7 1.6 2.2J 13.9J 20.5 2.1 5.0J
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 CAROLINA
NCDEQ INCIDENT NO. 13356
BenzeneEthylbenzeneTolueneTotal XylenesMTBEIPENaphthaleneWell 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 3.63/11/2014 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 <1.0 205
11/3/2021 5.7 3.5J <1.0 <3.0 <8.0 <1.0 16.9
5/18/2022 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 57.66/11/2013 <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 26.29/25/2014
3/11/2015
9/24/2015 2.2 8.3 <1.0 <3.0 4.2 <1.0 <2.0
3/7/2016 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 <105/5/202011/24/20205/3/202111/3/20215/18/202211/7/20226/11/2013 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 <10
5/31/2019 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 <10
5/5/2020 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 <10
5/3/2021 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
6/11/2013 4.7 <1 <1 <3 <1 2.9 <2
9/16/2013 <1 <1 <1 <3 <1 <1 <2
12/5/2013 <1 <1 <1 <3 <1 <1 <2
3/11/2014 5.3 <1 <1 <3 <1 6.5 <26/3/2014 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 <2.03/7/2016 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 <10
11/7/2019 <1.0 <1.0 <1.0 <3.0 <8.0 <1.0 <10
5/5/2020
11/24/2020
5/3/2021
11/3/2021
5/18/2022
11/7/2022
1 600 600 500 20 70 6
5,000 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.
Contaminant of Concern
Unable to LocateUnable to Locate
NCAC 2L Groundwater Quality
MW-11
MW-4R
Not Sampled
Not Sampled
MW-3Ra
MW-1R
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
Not Sampled
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.
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
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
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
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
MW-1R
MW-3Ra
MW-4R
MW-11
Not Measured
Not Measured
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
BromoformChlorodibromomethane1,1-Dichloroethene1,1-Dichloroethanecis-1,2-DichloroetheneMTBETetrachloroetheneTrichloroetheneWell 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
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 BOWMAN AVENUENORTH GREENSBORO ROADMW-8WELLHOUSEMW-7MW-7AMW-3RaMW-1RT-2RMW-4RFORMERGASOLINEUST BASINFORMERDISPENSERISLANDFORMERHEATING OIL ANDWASTE OIL BASINMULTIPURPOSEBUILDINGMW-11MW-5MW-9MW-12
WEST BOWMAN AVENUENORTH GREENSBORO ROADMW-8WELLHOUSEMW-7MW-7AMW-3RaMW-1RT-2RMW-4RFORMERGASOLINEUST BASINFORMERDISPENSERISLANDFORMERHEATING OIL ANDWASTE OIL BASINMULTIPURPOSEBUILDINGMW-11MW-5MW-9MW-12

APPENDIX A

LABORATORY ANALYTICAL RESULTS

11/30/22
Technical Report for
Atlas
Liberty BP 248 N. Greensboro Road, Liberty, NC
CENAMA073
SGS Job Number: LA85112
Sampling Date: 11/07/22
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
Ron Benjamin
Lab Director
Scott, LA 11/30/22
e-Hardcopy 2.0
Automated Report
34
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 34
LA85112
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................5
3.1: LA85112-1: MW-1R .....................................................................................................6
3.2: LA85112-2: MW-4R .....................................................................................................7
3.3: LA85112-3: WSW-2 .....................................................................................................8
Section 4: Misc. Forms ............................................................................................................12
4.1: Chain of Custody ...........................................................................................................13
Section 5: MS Volatiles - QC Data Summaries .....................................................................18
5.1: Method Blank Summary ................................................................................................19
5.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................22
5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................25
Section 6: GC Volatiles - QC Data Summaries .....................................................................28
6.1: Method Blank Summary ................................................................................................29
6.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................31
6.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................33
6.4: Duplicate Summary .......................................................................................................34 1234562 of 34
LA85112
SGS North America Inc.
Sample Summary
Atlas
Job No:LA85112
Liberty BP 248 N. Greensboro Road, Liberty, NC
Project No: CENAMA073
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
LA85112-1 11/07/22 11:05 BB 11/09/22 AQ Ground Water MW-1R
LA85112-2 11/07/22 11:35 BB 11/09/22 AQ Ground Water MW-4R
LA85112-3 11/07/22 11:50 BB 11/09/22 AQ Ground Water WSW-2
3 of 34
LA851121
Summary of Hits Page 1 of 1
Job Number:LA85112
Account:Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Collected:11/07/22
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA85112-1 MW-1R
Benzene 1.7 1.0 0.39 ug/l EPA 602
Ethylbenzene 0.88 J 1.0 0.15 ug/l EPA 602
Naphthalene 57.6 10 0.68 ug/l EPA 602
Xylenes (total)10.6 3.0 0.86 ug/l EPA 602
o-Xylene 4.7 1.0 0.53 ug/l EPA 602
m,p-Xylene 5.9 2.0 0.36 ug/l EPA 602
LA85112-2 MW-4R
Benzene 8.4 1.0 0.39 ug/l EPA 602
Ethylbenzene 1.7 1.0 0.15 ug/l EPA 602
Isopropyl Ether 2.1 1.0 0.33 ug/l EPA 602
Methyl Tert Butyl Ether 20.5 8.0 1.3 ug/l EPA 602
Naphthalene 5.0 J 10 0.68 ug/l EPA 602
Toluene 1.6 1.0 0.25 ug/l EPA 602
Xylenes (total)2.2 J 3.0 0.86 ug/l EPA 602
o-Xylene 0.64 J 1.0 0.53 ug/l EPA 602
m,p-Xylene 1.6 J 2.0 0.36 ug/l EPA 602
LA85112-3 WSW-2
1,1-Dichloroethylene 0.45 J 0.50 0.094 ug/l SM 6200B
cis-1,2-Dichloroethylene 0.18 J 0.50 0.11 ug/l SM 6200B
Trichloroethylene 1.2 0.50 0.18 ug/l SM 6200B
4 of 34
LA851122
SGS North America Inc.
Sample Results
Report of Analysis
Scott, LA
Section 3
5 of 34
LA851123
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-1R
Lab Sample ID:LA85112-1 Date Sampled:11/07/22
Matrix:AQ - Ground Water Date Received:11/09/22
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 LP311227.D 1 11/10/22 14:54 KM n/a n/a GLP3459
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 1.7 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 0.88 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 57.6 10 0.68 ug/l
108-88-3 Toluene ND 1.0 0.25 ug/l
1330-20-7 Xylenes (total)10.6 3.0 0.86 ug/l
95-47-6 o-Xylene 4.7 1.0 0.53 ug/l
m,p-Xylene 5.9 2.0 0.36 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
540-36-3 1,4-Difluorobenzene 107%83-115%
460-00-4 4-Bromofluorobenzene 128%74-131%
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 34
LA8511233.1
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:MW-4R
Lab Sample ID:LA85112-2 Date Sampled:11/07/22
Matrix:AQ - Ground Water Date Received:11/09/22
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 LP311228.D 1 11/10/22 15:22 KM n/a n/a GLP3459
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 8.4 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 1.7 1.0 0.15 ug/l
108-20-3 Isopropyl Ether 2.1 1.0 0.33 ug/l
1634-04-4 Methyl Tert Butyl Ether 20.5 8.0 1.3 ug/l
91-20-3 Naphthalene 5.0 10 0.68 ug/l J
108-88-3 Toluene 1.6 1.0 0.25 ug/l
1330-20-7 Xylenes (total)2.2 3.0 0.86 ug/l J
95-47-6 o-Xylene 0.64 1.0 0.53 ug/l J
m,p-Xylene 1.6 2.0 0.36 ug/l J
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
540-36-3 1,4-Difluorobenzene 109%83-115%
460-00-4 4-Bromofluorobenzene 104%74-131%
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 34
LA8511233.2
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:WSW-2
Lab Sample ID:LA85112-3 Date Sampled:11/07/22
Matrix:AQ - Ground Water Date Received:11/09/22
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 2K0144996.D 1 11/15/22 22:37 MB n/a n/a V2K4039
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-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 0.45 0.50 0.094 ug/l J
156-59-2 cis-1,2-Dichloroethylene 0.18 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 34
LA8511233.3
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:WSW-2
Lab Sample ID:LA85112-3 Date Sampled:11/07/22
Matrix:AQ - Ground Water Date Received:11/09/22
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 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 1.2 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 104%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 34
LA8511233.3
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:WSW-2
Lab Sample ID:LA85112-3 Date Sampled:11/07/22
Matrix:AQ - Ground Water Date Received:11/09/22
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 105%70-130%
460-00-4 4-Bromofluorobenzene 98%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
10 of 34
LA8511233.3
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:WSW-2
Lab Sample ID:LA85112-3 Date Sampled:11/07/22
Matrix:AQ - Ground Water Date Received:11/09/22
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 LE039264.D 1 11/10/22 22:32 KM n/a n/a GLE2314
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 108%70-130%
615-59-8 2,5-Dibromotoluene 99%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 34
LA8511233.3
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 34
LA851124
LA85112: Chain of Custody
Page 1 of 5
13 of 34
LA8511244.1
LA85112: Chain of Custody
Page 2 of 5
14 of 34
LA8511244.1
LA85112: Chain of Custody
Page 3 of 5
15 of 34
LA8511244.1
Job Number:LA85112 Client:ATC
Date / Time Received:11/9/2022 9:00:00 AM Delivery Method:FEDEX
Project:FORMER LIBERTY BP
4. No. Coolers:1
Airbill #'s:
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:
IR002;
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: (1.6/1.4);
SGS Sample Receipt Summary
LA85112: Chain of Custody
Page 4 of 5
16 of 34
LA8511244.1
Page 2 of 2
Problem Resolution
CSR:Response Date:
Response:
Job Number:LA85112
LA85112: Chain of Custody
Page 5 of 5
17 of 34
LA8511244.1
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
18 of 34
LA851125
Method Blank Summary Page 1 of 3
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4039-MB1 2K0144994.D 1 11/15/22 MB n/a n/a V2K4039
The QC reported here applies to the following samples:Method: SM 6200B
LA85112-3
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 ND 50 8.4 ug/l
100-41-4 Ethylbenzene ND 0.50 0.20 ug/l
19 of 34
LA8511255.1.1
Method Blank Summary Page 2 of 3
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4039-MB1 2K0144994.D 1 11/15/22 MB n/a n/a V2K4039
The QC reported here applies to the following samples:Method: SM 6200B
LA85112-3
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 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 ND 0.50 0.068 ug/l
91-20-3 Naphthalene 0.21 0.50 0.10 ug/l J
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
20 of 34
LA8511255.1.1
Method Blank Summary Page 3 of 3
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4039-MB1 2K0144994.D 1 11/15/22 MB n/a n/a V2K4039
The QC reported here applies to the following samples:Method: SM 6200B
LA85112-3
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 106%70-130%
2037-26-5 Toluene-D8 103%70-130%
460-00-4 4-Bromofluorobenzene 97%70-130%
21 of 34
LA8511255.1.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4039-BS1 2K0144991.D 1 11/15/22 MB n/a n/a V2K4039
V2K4039-BSD1 2K0144992.D 1 11/15/22 MB n/a n/a V2K4039
The QC reported here applies to the following samples:Method: SM 6200B
LA85112-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
67-64-1 Acetone 50 74.8 150*80.5 161*7 70-130/30
71-43-2 Benzene 20 22.7 114 23.3 117 3 70-130/30
108-86-1 Bromobenzene 20 22.1 111 22.7 114 3 70-130/30
74-97-5 Bromochloromethane 20 23.6 118 24.5 123 4 70-130/30
75-27-4 Bromodichloromethane 20 21.7 109 22.5 113 4 70-130/30
75-25-2 Bromoform 20 24.8 124 25.6 128 3 70-130/30
104-51-8 n-Butylbenzene 20 22.2 111 23.0 115 4 70-130/30
135-98-8 sec-Butylbenzene 20 21.1 106 22.3 112 6 70-130/30
98-06-6 tert-Butylbenzene 20 22.5 113 23.3 117 3 70-130/30
56-23-5 Carbon Tetrachloride 20 21.8 109 22.8 114 4 70-130/30
108-90-7 Chlorobenzene 20 21.7 109 22.2 111 2 70-130/30
75-00-3 Chloroethane 20 25.4 127 26.9 135 6 60-140/30
67-66-3 Chloroform 20 21.9 110 22.6 113 3 70-130/30
95-49-8 o-Chlorotoluene 20 20.0 100 21.2 106 6 70-130/30
106-43-4 p-Chlorotoluene 20 20.6 103 21.6 108 5 70-130/30
124-48-1 Dibromochloromethane 20 23.1 116 23.6 118 2 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 20.7 104 22.9 115 10 70-130/30
106-93-4 1,2-Dibromoethane 20 21.6 108 22.1 111 2 70-130/30
75-71-8 Dichlorodifluoromethane 20 25.0 125 25.3 127 1 60-140/30
541-73-1 m-Dichlorobenzene 20 22.0 110 22.5 113 2 70-130/30
95-50-1 o-Dichlorobenzene 20 21.5 108 22.0 110 2 70-130/30
106-46-7 p-Dichlorobenzene 20 21.3 107 22.1 111 4 70-130/30
75-34-3 1,1-Dichloroethane 20 22.1 111 23.1 116 4 70-130/30
107-06-2 1,2-Dichloroethane 20 23.6 118 24.1 121 2 70-130/30
75-35-4 1,1-Dichloroethylene 20 25.8 129 26.7 134*3 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 20.8 104 21.5 108 3 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 25.9 130 27.3 137*5 70-130/30
78-87-5 1,2-Dichloropropane 20 21.9 110 22.2 111 1 70-130/30
142-28-9 1,3-Dichloropropane 20 21.5 108 22.3 112 4 70-130/30
594-20-7 2,2-Dichloropropane 20 21.1 106 22.0 110 4 70-130/30
563-58-6 1,1-Dichloropropene 20 22.1 111 22.6 113 2 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 22.8 114 23.8 119 4 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 23.4 117 23.8 119 2 70-130/30
108-20-3 Di-Isopropyl Ether 20 23.1 116 23.8 119 3 70-130/30
64-17-5 Ethyl Alcohol 400 389 97 455 114 16 70-130/30
100-41-4 Ethylbenzene 20 20.1 101 20.2 101 0 70-130/30
* = Outside of Control Limits.
22 of 34
LA8511255.2.1
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4039-BS1 2K0144991.D 1 11/15/22 MB n/a n/a V2K4039
V2K4039-BSD1 2K0144992.D 1 11/15/22 MB n/a n/a V2K4039
The QC reported here applies to the following samples:Method: SM 6200B
LA85112-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
591-78-6 2-Hexanone 50 67.2 134*69.9 140*4 70-130/30
87-68-3 Hexachlorobutadiene 20 22.0 110 22.2 111 1 70-130/30
98-82-8 Isopropylbenzene 20 22.1 111 22.4 112 1 70-130/30
99-87-6 p-Isopropyltoluene 20 22.4 112 23.1 116 3 70-130/30
74-83-9 Methyl Bromide 20 27.3 137 28.4 142*4 60-140/30
74-87-3 Methyl Chloride 20 20.8 104 21.7 109 4 60-140/30
74-95-3 Methylene Bromide 20 22.2 111 23.0 115 4 70-130/30
75-09-2 Methylene Chloride 20 24.9 125 25.7 129 3 70-130/30
78-93-3 Methyl Ethyl Ketone 50 58.4 117 63.4 127 8 70-130/30
108-10-1 4-Methyl-2-pentanone 50 61.8 124 64.2 128 4 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 25.1 126 26.1 131*4 70-130/30
91-20-3 Naphthalene 20 19.8 99 21.2 106 7 70-130/30
103-65-1 n-Propylbenzene 20 20.4 102 20.9 105 2 70-130/30
100-42-5 Styrene 20 21.9 110 22.2 111 1 70-130/30
630-20-6 1,1,1,2-Tetrachloroethane 20 22.7 114 23.1 116 2 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 20.2 101 21.2 106 5 70-130/30
127-18-4 Tetrachloroethylene 20 22.2 111 22.1 111 0 70-130/30
108-88-3 Toluene 20 20.8 104 21.9 110 5 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 21.5 108 22.5 113 5 70-130/30
120-82-1 1,2,4-Trichlorobenzene 20 21.4 107 22.5 113 5 70-130/30
71-55-6 1,1,1-Trichloroethane 20 21.5 108 22.8 114 6 70-130/30
79-00-5 1,1,2-Trichloroethane 20 21.4 107 21.7 109 1 70-130/30
79-01-6 Trichloroethylene 20 22.9 115 23.6 118 3 70-130/30
75-69-4 Trichlorofluoromethane 20 26.7 134 28.1 141*5 60-140/30
96-18-4 1,2,3-Trichloropropane 20 22.0 110 22.4 112 2 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 21.0 105 21.6 108 3 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 21.2 106 22.1 111 4 70-130/30
108-05-4 Vinyl Acetate 20 23.3 117 24.5 123 5 70-130/30
75-01-4 Vinyl Chloride 20 23.6 118 24.3 122 3 60-140/30
m,p-Xylene 40 44.4 111 45.7 114 3 70-130/30
95-47-6 o-Xylene 20 20.8 104 21.2 106 2 70-130/30
1330-20-7 Xylene (total)60 65.2 109 67.0 112 3 70-130/30
* = Outside of Control Limits.
23 of 34
LA8511255.2.1
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K4039-BS1 2K0144991.D 1 11/15/22 MB n/a n/a V2K4039
V2K4039-BSD1 2K0144992.D 1 11/15/22 MB n/a n/a V2K4039
The QC reported here applies to the following samples:Method: SM 6200B
LA85112-3
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 101%105%70-130%
2037-26-5 Toluene-D8 99%98%70-130%
460-00-4 4-Bromofluorobenzene 98%96%70-130%
* = Outside of Control Limits.
24 of 34
LA8511255.2.1
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA85112-3MS 2K0144997.D 1 11/15/22 MB n/a n/a V2K4039
LA85112-3MSD 2K0144998.D 1 11/15/22 MB n/a n/a V2K4039
LA85112-3 2K0144996.D 1 11/15/22 MB n/a n/a V2K4039
The QC reported here applies to the following samples:Method: SM 6200B
LA85112-3
LA85112-3 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 50 38.2 76 50 35.8 72 6 70-130/20
71-43-2 Benzene ND 20 22.5 113 20 22.3 112 1 70-130/20
108-86-1 Bromobenzene ND 20 21.6 108 20 21.5 108 0 70-130/20
74-97-5 Bromochloromethane ND 20 24.8 124 20 23.6 118 5 70-130/20
75-27-4 Bromodichloromethane ND 20 22.1 111 20 21.4 107 3 70-130/20
75-25-2 Bromoform ND 20 23.0 115 20 23.1 116 0 70-130/20
104-51-8 n-Butylbenzene ND 20 20.8 104 20 21.4 107 3 70-130/20
135-98-8 sec-Butylbenzene ND 20 21.0 105 20 22.0 110 5 70-130/20
98-06-6 tert-Butylbenzene ND 20 23.6 118 20 24.3 122 3 70-130/20
56-23-5 Carbon Tetrachloride ND 20 22.3 112 20 21.9 110 2 70-130/20
108-90-7 Chlorobenzene ND 20 21.7 109 20 21.9 110 1 70-130/20
75-00-3 Chloroethane ND 20 29.3 147*20 29.1 146*1 60-140/20
67-66-3 Chloroform ND 20 22.0 110 20 21.6 108 2 70-130/20
95-49-8 o-Chlorotoluene ND 20 20.0 100 20 20.9 105 4 70-130/20
106-43-4 p-Chlorotoluene ND 20 20.2 101 20 21.0 105 4 70-130/20
124-48-1 Dibromochloromethane ND 20 22.6 113 20 22.1 111 2 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 20 20.0 100 20 20.9 105 4 70-130/20
106-93-4 1,2-Dibromoethane ND 20 21.7 109 20 20.4 102 6 70-130/20
75-71-8 Dichlorodifluoromethane ND 20 24.1 121 20 24.2 121 0 60-140/20
541-73-1 m-Dichlorobenzene ND 20 21.3 107 20 22.2 111 4 70-130/20
95-50-1 o-Dichlorobenzene ND 20 21.0 105 20 21.5 108 2 70-130/20
106-46-7 p-Dichlorobenzene ND 20 20.6 103 20 21.5 108 4 70-130/20
75-34-3 1,1-Dichloroethane ND 20 22.9 115 20 22.3 112 3 70-130/20
107-06-2 1,2-Dichloroethane ND 20 24.4 122 20 23.3 117 5 70-130/20
75-35-4 1,1-Dichloroethylene 0.45 J 20 27.8 137*20 27.3 134*2 70-130/20
156-59-2 cis-1,2-Dichloroethylene 0.18 J 20 21.3 106 20 21.0 104 1 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 20 28.5 143*20 27.7 139*3 70-130/20
78-87-5 1,2-Dichloropropane ND 20 22.1 111 20 21.5 108 3 70-130/20
142-28-9 1,3-Dichloropropane ND 20 22.2 111 20 21.2 106 5 70-130/20
594-20-7 2,2-Dichloropropane ND 20 20.6 103 20 20.4 102 1 70-130/20
563-58-6 1,1-Dichloropropene ND 20 22.3 112 20 22.1 111 1 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 20 22.5 113 20 21.7 109 4 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 20 22.6 113 20 21.5 108 5 70-130/20
108-20-3 Di-Isopropyl Ether ND 20 23.9 120 20 23.4 117 2 70-130/20
64-17-5 Ethyl Alcohol ND 400 437 109 400 409 102 7 70-130/20
100-41-4 Ethylbenzene ND 20 19.9 100 20 20.1 101 1 70-130/20
* = Outside of Control Limits.
25 of 34
LA8511255.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA85112-3MS 2K0144997.D 1 11/15/22 MB n/a n/a V2K4039
LA85112-3MSD 2K0144998.D 1 11/15/22 MB n/a n/a V2K4039
LA85112-3 2K0144996.D 1 11/15/22 MB n/a n/a V2K4039
The QC reported here applies to the following samples:Method: SM 6200B
LA85112-3
LA85112-3 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 50 63.6 127 50 54.2 108 16 70-130/20
87-68-3 Hexachlorobutadiene ND 20 19.8 99 20 19.8 99 0 70-130/20
98-82-8 Isopropylbenzene ND 20 22.2 111 20 22.0 110 1 70-130/20
99-87-6 p-Isopropyltoluene ND 20 21.9 110 20 23.1 116 5 70-130/20
74-83-9 Methyl Bromide ND 20 28.7 144*20 29.7 149*3 60-140/20
74-87-3 Methyl Chloride ND 20 20.7 104 20 21.0 105 1 60-140/20
74-95-3 Methylene Bromide ND 20 22.0 110 20 21.3 107 3 70-130/20
75-09-2 Methylene Chloride ND 20 27.0 135*20 26.0 130 4 70-130/20
78-93-3 Methyl Ethyl Ketone ND 50 51.0 102 50 46.9 94 8 70-130/20
108-10-1 4-Methyl-2-pentanone ND 50 63.3 127 50 55.8 112 13 70-130/20
1634-04-4 Methyl Tert Butyl Ether ND 20 27.6 138*20 25.6 128 8 70-130/20
91-20-3 Naphthalene ND 20 18.9 95 20 18.7 94 1 70-130/20
103-65-1 n-Propylbenzene ND 20 19.7 99 20 21.0 105 6 70-130/20
100-42-5 Styrene ND 20 21.4 107 20 21.0 105 2 70-130/20
630-20-6 1,1,1,2-Tetrachloroethane ND 20 22.4 112 20 21.9 110 2 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 20 20.0 100 20 20.2 101 1 70-130/20
127-18-4 Tetrachloroethylene ND 20 17.6 88 20 17.9 90 2 70-130/20
108-88-3 Toluene ND 20 20.9 105 20 21.1 106 1 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 20 19.8 99 20 20.3 102 2 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 20 20.1 101 20 20.4 102 1 70-130/20
71-55-6 1,1,1-Trichloroethane ND 20 22.3 112 20 21.9 110 2 70-130/20
79-00-5 1,1,2-Trichloroethane ND 20 22.0 110 20 20.4 102 8 70-130/20
79-01-6 Trichloroethylene 1.2 20 22.9 109 20 22.6 107 1 70-130/20
75-69-4 Trichlorofluoromethane ND 20 29.4 147*20 28.7 144*2 60-140/20
96-18-4 1,2,3-Trichloropropane ND 20 22.7 114 20 20.2 101 12 70-130/20
95-63-6 1,2,4-Trimethylbenzene ND 20 20.3 102 20 21.4 107 5 70-130/20
108-67-8 1,3,5-Trimethylbenzene ND 20 20.9 105 20 22.0 110 5 70-130/20
108-05-4 Vinyl Acetate ND 20 25.6 128 20 23.9 120 7 70-130/20
75-01-4 Vinyl Chloride ND 20 25.2 126 20 24.8 124 2 60-140/20
m,p-Xylene ND 40 44.3 111 40 44.2 111 0 70-130/20
95-47-6 o-Xylene ND 20 20.9 105 20 20.7 104 1 70-130/20
1330-20-7 Xylene (total)ND 60 65.2 109 60 64.8 108 1 70-130/20
* = Outside of Control Limits.
26 of 34
LA8511255.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA85112-3MS 2K0144997.D 1 11/15/22 MB n/a n/a V2K4039
LA85112-3MSD 2K0144998.D 1 11/15/22 MB n/a n/a V2K4039
LA85112-3 2K0144996.D 1 11/15/22 MB n/a n/a V2K4039
The QC reported here applies to the following samples:Method: SM 6200B
LA85112-3
CAS No.Surrogate Recoveries MS MSD LA85112-3 Limits
17060-07-0 1,2-Dichloroethane-D4 109%102%104%70-130%
2037-26-5 Toluene-D8 99%100%105%70-130%
460-00-4 4-Bromofluorobenzene 94%91%98%70-130%
* = Outside of Control Limits.
27 of 34
LA8511255.3.1
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
28 of 34
LA851126
Method Blank Summary Page 1 of 1
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2314-MB2 LE039263.D 1 11/10/22 KM n/a n/a GLE2314
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA85112-3
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 112%70-130%
615-59-8 2,5-Dibromotoluene 103%70-130%
29 of 34
LA8511266.1.1
Method Blank Summary Page 1 of 1
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLP3459-MB LP311225.D 1 11/10/22 KM n/a n/a GLP3459
The QC reported here applies to the following samples:Method: EPA 602
LA85112-1, LA85112-2
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 1.0 0.39 ug/l
108-90-7 Chlorobenzene ND 1.0 0.28 ug/l
95-50-1 1,2-Dichlorobenzene 0.72 1.0 0.30 ug/l J
541-73-1 1,3-Dichlorobenzene 0.78 1.0 0.22 ug/l J
106-46-7 1,4-Dichlorobenzene 0.70 1.0 0.24 ug/l J
100-41-4 Ethylbenzene 0.29 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 3.6 10 0.68 ug/l J
108-88-3 Toluene ND 1.0 0.25 ug/l
1330-20-7 Xylenes (total)0.87 3.0 0.86 ug/l J
95-47-6 o-Xylene ND 1.0 0.53 ug/l
m,p-Xylene 0.48 2.0 0.36 ug/l J
CAS No.Surrogate Recoveries Limits
540-36-3 1,4-Difluorobenzene 101%83-115%
460-00-4 4-Bromofluorobenzene 99%74-131%
30 of 34
LA8511266.1.2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLE2314-BS2 LE039261.D 1 11/10/22 KM n/a n/a GLE2314
GLE2314-BSD2 LE039262.D 1 11/10/22 KM n/a n/a GLE2314
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA85112-3
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
C5- C8 Aliphatics (Unadj.)120 104 87 99.3 83 5 70-130/25
C9- C12 Aliphatics (Unadj.)120 114 95 110 91 4 70-130/25
C9- C10 Aromatics (Unadj.)40 41.9 105 41.4 104 1 70-130/25
CAS No.Surrogate Recoveries BSP BSD Limits
615-59-8 2,5-Dibromotoluene 111%108%70-130%
615-59-8 2,5-Dibromotoluene 103%101%70-130%
* = Outside of Control Limits.
31 of 34
LA8511266.2.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 1
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
GLP3459-BS1 LP311223.D 1 11/10/22 KM n/a n/a GLP3459
GLP3459-BSD1 LP311224.D 1 11/10/22 KM n/a n/a GLP3459
The QC reported here applies to the following samples:Method: EPA 602
LA85112-1, LA85112-2
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
71-43-2 Benzene 50 47.2 94 47.2 94 0 88-115/10
108-90-7 Chlorobenzene 50 50.6 101 49.0 98 3 88-114/10
95-50-1 1,2-Dichlorobenzene 50 46.6 93 44.7 89 4 54-142/10
541-73-1 1,3-Dichlorobenzene 50 47.0 94 44.4 89 6 83-118/10
106-46-7 1,4-Dichlorobenzene 50 48.1 96 46.7 93 3 80-121/10
100-41-4 Ethylbenzene 50 51.4 103 49.8 100 3 87-114/10
108-20-3 Isopropyl Ether 50 47.8 96 47.6 95 0 83-117/10
1634-04-4 Methyl Tert Butyl Ether 50 45.1 90 45.8 92 2 68-130/19
91-20-3 Naphthalene 50 45.6 91 45.3 91 1 58-140/18
108-88-3 Toluene 50 46.6 93 44.7 89 4 88-114/10
1330-20-7 Xylenes (total)150 149 99 145 97 3 86-114/10
95-47-6 o-Xylene 50 49.4 99 48.1 96 3 87-115/10
m,p-Xylene 100 99.2 99 96.6 97 3 86-115/10
CAS No.Surrogate Recoveries BSP BSD Limits
540-36-3 1,4-Difluorobenzene 99%101%83-115%
460-00-4 4-Bromofluorobenzene 101%100%74-131%
* = Outside of Control Limits.
32 of 34
LA8511266.2.2
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA85112-1MS LP311229.D 10 11/10/22 KM n/a n/a GLP3459
LA85112-1MSD LP311230.D 10 11/10/22 KM n/a n/a GLP3459
LA85112-1 LP311227.D 1 11/10/22 KM n/a n/a GLP3459
The QC reported here applies to the following samples:Method: EPA 602
LA85112-1, LA85112-2
LA85112-1 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 1.7 500 476 95 500 503 100 6 69-129/10
108-90-7 Chlorobenzene ND 500 497 99 500 524 105 5 76-122/10
95-50-1 1,2-Dichlorobenzene ND 500 441 88 500 475 95 7 37-154/14
541-73-1 1,3-Dichlorobenzene ND 500 451 90 500 482 96 7 67-129/12
106-46-7 1,4-Dichlorobenzene ND 500 458 92 500 491 98 7 66-131/13
100-41-4 Ethylbenzene 0.88 J 500 510 102 500 538 107 5 75-121/10
108-20-3 Isopropyl Ether ND 500 480 96 500 501 100 4 73-126/12
1634-04-4 Methyl Tert Butyl Ether ND 500 454 91 500 491 98 8 63-136/22
91-20-3 Naphthalene 57.6 500 449 78 500 525 93 16 46-151/21
108-88-3 Toluene ND 500 465 93 500 482 96 4 69-130/10
1330-20-7 Xylenes (total)10.6 1500 1490 99 1500 1560 103 5 71-126/10
95-47-6 o-Xylene 4.7 500 493 98 500 520 103 5 72-126/11
m,p-Xylene 5.9 1000 993 99 1000 1040 103 5 69-127/11
CAS No.Surrogate Recoveries MS MSD LA85112-1 Limits
540-36-3 1,4-Difluorobenzene 103%101%107%83-115%
460-00-4 4-Bromofluorobenzene 105%104%128%74-131%
* = Outside of Control Limits.
33 of 34
LA8511266.3.1
Duplicate Summary Page 1 of 1
Job Number:LA85112
Account:ATCNCR Atlas
Project:Liberty BP 248 N. Greensboro Road, Liberty, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA85112-3DUP LE039265.D 1 11/10/22 KM n/a n/a GLE2314
LA85112-3 LE039264.D 1 11/10/22 KM n/a n/a GLE2314
The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1
LA85112-3
LA85112-3 DUP
CAS No.Compound ug/l Q ug/l Q RPD Limits
C5- C8 Aliphatics (Unadj.)ND ND nc 50
C9- C12 Aliphatics (Unadj.)ND ND nc 50
C9- C10 Aromatics (Unadj.)ND ND nc 50
CAS No.Surrogate Recoveries DUP LA85112-3 Limits
615-59-8 2,5-Dibromotoluene 104%108%70-130%
615-59-8 2,5-Dibromotoluene 96%99%70-130%
* = Outside of Control Limits.
34 of 34
LA8511266.4.1