WS-8004_37353_CA_MRP_20220422

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

April 22, 2022

Mr. Herbert Berger, P.G.
North Carolina Department of Environmental Quality
Division of Waste Management – Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699-1646

Subject: Groundwater Monitoring Report
Baux Mountain 76
4801 Old Rural Hall Road
Winston Salem, Forsyth County, North Carolina
NCDEQ Incident No. 37353
ATC Project No.: SLC3735302

Dear Mr. Berger:

ATC Associates of North Carolina, P.C. (ATC) is submitting the enclosed Groundwater Monitoring Report for
the Baux Mountain 76 site. The report presents investigative procedures, field activities, and laboratory
analytical results for monitoring well installation and a groundwater sampling event conducted in February
2022.

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

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

Aaron D. Springer Gabriel Araos, P.E.
Staff Scientist Branch Manager
Direct Line: 919-227-3353 Direct Line: 919-573-1205
Email: [e-mail] Email: [e-mail]

Attachments:
1. Groundwater Monitoring Report

Prepared for:

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

GROUNDWATER MONITORING REPORT
BAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA

ATC Project No. SLC3735302

Prepared by:

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

Aaron D. Springer
Staff Scientist
Direct Line: 919-227-3353
Email: [e-mail]
Gabriel Araos, P.E.
Branch Manager
Direct Line: 919-573-1205
Email: [e-mail]

April 22, 2022

Baux Mountain 76
Incident No. 37353
April 22, 2022
Page i

ATC Project No. SLC3735302 NCDEQ Trust Fund Branch
Table of Contents
1.0 SITE IDENTIFICATION .......................................................................................................................... 1
2.0 EXECUTIVE SUMMARY ........................................................................................................................ 2
3.0 SITE DESCRIPTION .............................................................................................................................. 3
3.1 SITE CHARACTERIZATION .................................................................................................................................... 3
3.2 SITE BACKGROUND ............................................................................................................................................ 3
4.0 GROUNDWATER CHARACTERIZATION ........................................................................................... 4
4.1 MONITORING WELL INSTALLATION ....................................................................................................................... 4
4.2 GROUNDWATER LEVELS...................................................................................................................................... 5
4.3 GROUNDWATER QUALITY ................................................................................................................................... 5
4.4 WATER SUPPLY WELL SAMPLING ......................................................................................................................... 6
5.0 CONCLUSIONS AND RECOMMENDATIONS .................................................................................... 6

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

FIGURES:
Figure 1 – Site Topographic Map
Figure 2 – Site Plan
Figure 3 – Potential Receptor Map
Figure 4 – Groundwater Elevation Contour Map
Figure 5 – Dissolved Benzene Isoconcentration Contour Map
Figure 6 – Other Chemicals of Concern in Groundwater

APPENDICES:
Appendix A – Field Notes
Appendix B – Site Photographs
Appendix C – Well Construction Record and Boring Log (MW-6)
Appendix D – Laboratory Analytical Results
Baux Mountain 76
Incident No. 37353
April 22, 2022
Page 2 of 7

ATC Project No. SLC3735302 NCDEQ Trust Fund Branch
2.0 EXECUTIVE SUMMARY

ATC Associates of North Carolina, P.C. (ATC) has completed a Groundwater Monitoring Report for the
Baux Mountain 76 site. This report documents monitoring well installation and a groundwater sampling
event conducted at the site in February 2022. The assessment activities were performed based on an April
7, 2022 Task Authorization (TA-02) by the Trust Fund Branch of the Underground Storage Tank (UST)
Section, Division of Waste Management, North Carolina Department of Environmental Quality (NCDEQ).
The work is being performed as part of State Lead Contract #N122019A between NCDEQ and ATC.

Baux Mountain 76 is located at 4801 Old Rural Hall Road in Winston Salem, Forsyth County, North
Carolina. Six monitoring wells (MW-1 through MW-6) are associated with the site. Municipal water is
available to the site and site vicinity via the City of Winston Salem. The site currently operates as Ortega’s
Garage a vehicle repair facility and the former UST system was removed in 2008.

ATC personnel supervised the installation of one type II monitoring well (MW-6) at the site on February 11,
2022 in order to delineate the eastern extent of the contaminated groundwater plume at the site. Monitoring
well MW-6 was installed to a total depth of 35 feet below ground surface and screened from 15 to 35 feet
below ground surface.

ATC personnel conducted a groundwater sampling event at the site on February 16, 2022. During the
sampling event, groundwater samples were collected from six monitoring wells (MW-1, MW-2, MW-3, MW-
4, MW-5, and MW-6). Samples were analyzed for VOCs by SM 6200B. LNAPL was not observed during
the sampling event, nor has LNAPL been detected historically. The direction of groundwater flow at the site
is generally to the north-northeast. The results of the sampling event indicate the following:

 Three active water supply wells (WSW-5, WSW-8 and WSW-11) used for drinking water and one
active water supply well (WSW-30) used for non-potable use are located within 1,000 feet of the
site. Municipal water is available in the site vicinity by the City of Winston Salem;
o WSW-6 was previously listed as active but the property is vacant and the property owner
confirmed that the well was not in use;
o WSW-8 and WSW-11 are located greater than 500 feet up-gradient from the site;
o WSW-30 is located 725 feet down-gradient from the site;
o WSW-5 is considered the most “at-risk” water supply well since it is located 200 feet down-
gradient from the site. The property owner for WSW-5 did not return the signed access
agreement and attempts to sample WSW-5 during the sampling event were unsuccessful
due to occupant absence;
 Multiple VOCs were reported in MW-1, MW-5, and MW-6 exceeding the Title 15A NCAC 02L .0202
Groundwater Quality Standards (2L Standards);
 Concentrations of EDB also exceeded the Gross Contamination Level (GCL) in MW-1;
 Tetrachloroethylene (PCE) had been previously detected at the site and may be associated with
the current vehicle repair activities; and
 Impacted groundwater appears to be concentrated to the vicinity of the former 4,000-gallon UST
near monitoring well MW-1 and extends eastward toward the newly installed monitoring well MW-
6; and
 The overall VOC concentrations appear to be decreasing in monitoring well MW-1 but the horizontal
extent of the impacted groundwater plume is not defined towards the north or east.

Based on the results of the recent investigation, ATC recommends the installation of one on-site delineation
monitoring well north of MW-5 and one off-site monitoring well east of MW-6. In addition, ATC recommends
continued attempts to obtain an access agreement with property owner of WSW-5 to sample the water
supply well and to discuss connecting the property to municipal water. If WSW-5 is connected to municipal
water, the site risk can be re-evaluated.

Baux Mountain 76
Incident No. 37353
April 22, 2022
Page 3 of 7

ATC Project No. SLC3735302 NCDEQ Trust Fund Branch
3.0 SITE DESCRIPTION

3.1 SITE CHARACTERIZATION

The Baux Mountain 76 is located at 4801 Old Rural Hall Road in Winston Salem, Forsyth County, North
Carolina. The site is associated with Incident #37353. The property is currently owned by Mr. and Mrs.
Salvador Sanchez. Mr. and Mrs. Salvador Sanchez are the owners of the former UST system at the site.
The site was accepted into the NCDEQ State-Lead Program in 2009.

The Baux Mountain 76 site is bound to the east by Baux Mountain Road with residences beyond, to the
west by Old Rural Hall Road with residences beyond, to the north by commercial and residential properties,
and to the south by residential properties. The site vicinity is characterized as commercial and residential.
Municipal water is supplied to the site and site vicinity by the City of Winston Salem. Twenty water supply
wells are located within 1,000 feet of the site. Of the twenty water supply wells, only three are active for
potable use and one is active for non-potable use. Water supply well ownership information is included in
Table 1. A site topographic map is included as Figure 1 and a site plan depicting pertinent site features is
included as Figure 2. Water supply well locations are shown on Figure 3.

3.2 SITE BACKGROUND

On November 3, 2008, soil contamination was discovered by Trigon-Kleinfelder, Inc. during the removal of
two (2) 8,000-gallon gasoline USTs, one (1) 4,000-gallon gasoline UST, one (1) 550-gallon used oil UST,
and one (1) 275-gallon heating oil UST. As documented in the December 30, 2008 UST Closure Report,
laboratory results of the soil samples collected during UST closure activities indicated exceedances of the
NC Action Level for Gasoline Range Organics (GRO) in the soil located beneath the 4,000-gallon gasoline
UST, the western 8,000 gallon-gasoline UST, and the 275 gallon heating oil UST. The sample collected
from beneath the 275-gallon heating oil UST exceeded the NC Action Level for Diesel Range Organics
(DRO). As a result, a 24-hour Release and UST Leak Reporting Form was submitted. A Notice of Violation
was issued to the owners and of the UST system, Mr. and Mrs. Salvador Sanchez, on February 24, 2009.

On March 31, 2010, a Phase I Limited Site Assessment Report was prepared by Agra Environmental, Inc.
During the assessment, two groundwater monitoring wells were installed at the site (MW-1 and MW-2). Soil
samples were collected during installation of monitoring wells MW-1 and MW-2. The results of the soil
sampling indicated soil impacts exceeding the Soil-to-Groundwater Maximum Soil Contaminant
Concentration (MSCC) Levels from 10 to 20 feet below ground surface near MW-1 and from 5 to 20 feet
below ground surface near MW-2. Groundwater samples collected from monitoring wells MW-1 and MW-2
indicated numerous compounds were detected at concentrations exceeding the 2L Standards in monitoring
well MW-1. Lead and chromium were detected above the 2L Standards in monitoring well MW-2. 1,2-
Dibromoethane (EDB) was detected at a concentration exceeding the established GCL in monitoring well
MW-1. Agra Environmental, Inc., identified fourteen water supply wells within a 1,000 foot radius of the site
during the assessment.

On June 7, 2010, a Phase II Limited Site Assessment Report was prepared by Agra Environmental, Inc.
During the assessment, three additional groundwater monitoring wells were installed at the site (MW-3,
MW-4, and MW-5) and a groundwater sampling event was conducted on April 22, 2010. The laboratory
results from the groundwater sampling event indicated numerous compounds were detected at
concentrations exceeding the 2L Standards in monitoring well MW-1. Lead, chromium, and
bromodichloromethane were detected above the 2L Standards in monitoring well MW-2. PCE was detected
in monitoring well MW-5 exceeding the 2L Standard. Benzene and EDB were detected at concentrations
exceeding the established GCLs in monitoring well MW-1.

On June 13, 2011, a Groundwater Monitoring Report was submitted by Agra Environmental, Inc. The
laboratory results from the groundwater sampling event indicated numerous compounds were detected at
concentrations exceeding the 2L Standards in monitoring well MW-1. Bromodichloromethane was detected
Baux Mountain 76
Incident No. 37353
April 22, 2022
Page 4 of 7

ATC Project No. SLC3735302 NCDEQ Trust Fund Branch
above the 2L Standard in monitoring well MW-2. Benzene and EDB were detected in monitoring well MW-
4 exceeding the respective 2L Standards. PCE and EDB were detected in monitoring well MW-5 exceeding
the respective 2L Standards. EDB was detected at a concentration exceeding the established GCL in
monitoring well MW-1.

On March 21, 2012, a Groundwater Monitoring Report was submitted by Agra Environmental, Inc. The
laboratory results from the groundwater sampling event indicated that numerous compounds were detected
at concentrations exceeding the 2L Standards in monitoring well MW-1. Benzene and EDB were detected
in monitoring well MW-4 exceeding the respective 2L Standards. PCE was detected in monitoring well MW-
5 exceeding the respective 2L Standard. EDB was detected at a concentration exceeding the established
GCL in monitoring well MW-1.

On July 20, 2012, a Groundwater Monitoring Event Letter Report was submitted by Crawford Environmental
Services. The laboratory results from the groundwater sampling event indicated numerous compounds
were detected at concentrations exceeding the 2L Standards in monitoring well MW-1. Benzene was
detected in monitoring well MW-4 exceeding the respective 2L Standard. PCE was detected in monitoring
wells MW-2 and MW-5 exceeding the respective 2L Standard. EDB was detected at a concentration
exceeding the established GCL in monitoring well MW-1.

On February 26, 2013, a Groundwater Monitoring Report was submitted by Crawford Environmental
Services. The laboratory results from the groundwater sampling event indicated numerous compounds
were detected at concentrations exceeding the 2L Standards in monitoring well MW-1. Benzene was
detected in monitoring well MW-4 exceeding the respective 2L Standard. PCE was detected in monitoring
well MW-5 exceeding the respective 2L Standard. EDB was detected at a concentration exceeding the
established GCL in monitoring well MW-1.

On March 9, 2015, a Groundwater Sampling and Hydraulic Conductivity Letter Report was submitted by
S&ME, Inc. A groundwater sample was collected from monitoring well MW-1 and rising head slug tests
were performed on MW-1 and MW-2 on December 3, 2014. Laboratory results indicated numerous
compounds were detected at concentrations exceeding the 2L Standards in monitoring well MW-1. EDB
was detected at a concentration exceeding the established GCL in MW-1. Based on the results of the rising
head slug tests, the hydraulic conductivity was estimated at 5.308 feet per day for monitoring well MW-1
and 1.832 feet per day for monitoring well MW-2.

On January 28, 2019, a Groundwater Monitoring Report was submitted by Terracon Consultants, Inc. The
laboratory results from the groundwater sampling event indicated numerous compounds were detected at
concentrations exceeding the 2L Standards in monitoring well MW-1. PCE was detected in monitoring well
MW-5 exceeding the respective 2L Standard. EDB was detected at a concentration exceeding the
established GCL in monitoring well MW-1.

On November 8, 2021, a Groundwater Monitoring Report was submitted by ATC. The laboratory results
from the groundwater sampling event indicated numerous compounds were detected at concentrations
exceeding the 2L Standards in monitoring well MW-1. Benzene, EDB, and PCE were detected at
concentrations exceeding the 2L Standards in monitoring well MW-5. EDB as detected at a concentration
exceeding the GCL in monitoring well MW-1.

4.0 GROUNDWATER CHARACTERIZATION

4.1 MONITORING WELL INSTALLATION

ATC personnel supervised the installation of one Type II monitoring well (MW-6) at the site on February 11,
2022 in order to delineate the eastern extent of the contaminated groundwater plume at the site. Prior to
drilling activities, ATC notified the North Carolina one-call.

Baux Mountain 76
Incident No. 37353
April 22, 2022
Page 5 of 7

ATC Project No. SLC3735302 NCDEQ Trust Fund Branch
On February 11, 2022, ATC and a North Carolina-registered well driller, Geologic Exploration, mobilized to
the site. Monitoring well MW-6 was installed to a total depth of 35 feet below ground surface. MW-6 was
installed as a Type II, 2-inch diameter, schedule 40 PVC monitoring well with 20 feet of 0.010-inch factory-
slotted well screen from the base of the borehole and riser casing to ground surface. ATC measured the
TOC elevations for MW-6 using an existing monitoring well MW-1 as a reference elevation of 100 feet.
The location of monitoring well MW-6 is shown on Figure 2 and the well construction record and boring log
are included in Appendix C.

4.2 GROUNDWATER LEVELS

Groundwater level measurements were collected from monitoring wells MW-1 through MW-6 on February
16, 2022. Monitoring well construction details and groundwater elevation data are summarized in Table 2.
LNAPL was not observed during the sampling event, nor has LNAPL been detected historically. Field
parameters were measured during the February 16, 2022 sampling event and are summarized in Table 3.
The readings are generally consistent, with no apparent indication of biological degradation. The direction
of groundwater flow at the site is generally to the north-northeast. A groundwater elevation contour map is
included as Figure 4. Field notes from the February 16, 2022 site visit are included in Appendix A.
Photographs of the site are included in Appendix B.

4.3 GROUNDWATER QUALITY

On February 16, 2022, groundwater samples were collected from monitoring wells MW-1 through MW-6.
The samples were collected in laboratory-approved containers, packed in ice and delivered under
chain-of-custody protocol to SGS North America Inc. (SGS) for analyses. The groundwater samples were
analyzed for VOCs by SM 6200B.

Laboratory analytical results from the February 16, 2022, groundwater sampling event indicate the following
compounds exceeded the 2L Standards:

 Benzene: MW-1, MW-5, MW-6
 Toluene: MW-1 and MW-6
 Ethylbenzene: MW-1 and MW-6
 Total Xylenes: MW-1 and MW-6
 MTBE: MW-6
 Naphthalene: MW-1, MW-5, and MW-6
 n-Propylbenzene: MW-1
 1,2,4-Trimethylbenzene: MW-1 and MW-6
 EDB: MW-1 and MW-5
 1,2-Dichloroethane: MW-5 and MW-6
 2-Hexanone: MW-6
 PCE: MW-5

EDB was detected at a concentration exceeding the established GCL in monitoring well MW-1. PCE had
been previously detected at the site and may be associated with the current vehicle repair activities.
Groundwater analytical data are summarized in Table 4. A benzene isoconcentration contour map is
included as Figure 5. Other chemicals of concern are presented in Figure 6. The laboratory analytical
report and chain-of-custody forms are included in Appendix D. Historical groundwater analytical data is
summarized in Table 5.

As part of ATC’s quality assurance and quality control (QA and QC) measures, a data review of the
laboratory report was conducted. During the review, it was concluded that the samples were received by
the laboratory in acceptable condition and properly preserved. The samples were analyzed within the
correct holding times, and the chain of custody was properly completed by all parties. The laboratory QC
Baux Mountain 76
Incident No. 37353
April 22, 2022
Page 6 of 7

ATC Project No. SLC3735302 NCDEQ Trust Fund Branch
report shows an internal blank was analyzed for each method that was used for the original samples. The
laboratory fortified blank (LFB) and laboratory control sample (LCS) data results were also provided for
each analytical method. Refer to the laboratory report in Appendix D for details regarding QA results for
the laboratory samples and any noted exceptions. Overall, ATC concludes that the laboratory results are
usable and any exceptions do not significantly impact the conclusions presented in this report.

4.4 WATER SUPPLY WELL SAMPLING

ATC attempted to collect samples from the two closest water supply wells (WSW-5 and WSW-6) during the
February 2022 groundwater monitoring event. Signed access agreements were not returned to ATC for
either of the water supply wells by the date of the groundwater monitoring event. ATC personnel knocked
on the door of the residence at 4511 Baux Mountain Road (WSW-5) but the owner was not home and the
well was not sampled. ATC observed the water supply wells during the event. The property where WSW-6
is located was a vacant lot and the property owner informed ATC that the water supply well was not in use.
Photographs of the water supply wells are included in Appendix B.

5.0 CONCLUSIONS AND RECOMMENDATIONS

On behalf of the Trust Fund Branch of the UST Section, ATC has completed a Groundwater Monitoring
Report documenting monitoring well installation and a comprehensive groundwater sampling event
conducted in February 2022 for the Baux Mountain 76 located at 4801 Old Rural Hall Road in Winston
Salem, Forsyth County, North Carolina.

ATC personnel supervised the installation of one type II monitoring well (MW-6) at the site on February 11,
2022 in order to delineate the eastern extent of the contaminated groundwater plume at the site. Monitoring
well MW-6 was installed to a total depth of 35 feet below ground surface and screened from 15 to 35 feet
below ground surface.

ATC personnel conducted a groundwater sampling event at the site on February 16, 2022. During the
sampling event, groundwater samples were collected from six monitoring wells (MW-1, MW-2, MW-3, MW-
4, MW-5, and MW-6). Samples were analyzed for VOCs by SM 6200B. LNAPL was not observed during
the sampling event, nor has LNAPL been detected historically. The direction of groundwater flow at the site
is generally to the north-northeast. The results of the sampling event indicate the following:

 Three active water supply wells (WSW-5, WSW-8 and WSW-11) used for drinking water and one
active water supply well (WSW-30) used for non-potable use are located within 1,000 feet of the
site. Municipal water is available in the site vicinity by the City of Winston Salem;
o WSW-6 was previously listed as active but the property is vacant and the property owner
confirmed that the well was not in use;
o WSW-8 and WSW-11 are located greater than 500 feet up-gradient from the site;
o WSW-30 is located 725 feet down-gradient from the site;
o WSW-5 is considered the most “at-risk” water supply well since it is located 200 feet down-
gradient from the site. The property owner for WSW-5 did not return the signed access
agreement and attempts to sample WSW-5 during the sampling event were unsuccessful
due to occupant absence;
 Multiple VOCs were reported in MW-1, MW-5, and MW-6 exceeding the Title 15A NCAC 02L .0202
Groundwater Quality Standards (2L Standards);
 Concentrations of EDB also exceeded the Gross Contamination Level (GCL) in MW-1;
 Tetrachloroethylene (PCE) had been previously detected at the site and may be associated with
the current vehicle repair activities;
 Impacted groundwater appears to be concentrated to the vicinity of the former 4,000-gallon UST
near monitoring well MW-1 and extends eastward toward the newly installed monitoring well MW-
6; and
Baux Mountain 76
Incident No. 37353
April 22, 2022
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ATC Project No. SLC3735302 NCDEQ Trust Fund Branch
 The overall VOC concentrations appear to be decreasing in monitoring well MW-1 but the horizontal
extent of the impacted groundwater plume is not defined towards the north or east.

Based on the results of the recent investigation, ATC recommends the installation of one on-site delineation
monitoring well north of MW-5 and one off-site monitoring well east of MW-6. In addition, ATC recommends
continued attempts to obtain an access agreement with property owner of WSW-5 to sample the water
supply well and to discuss connecting the property to municipal water. If WSW-5 is connected to municipal
water, the site risk can be re-evaluated.

Baux Mountain 76

ATC Project No. SLC3735302 NCDEQ State Lead Program

TABLES

TABLE 1
WATER SUPPLY WELL INFORMATION
BAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
INCIDENT #37353
Well ID Parcel ID Property Owner(s)Property Address Owner Address
Estimated Distance
and Direction from
Source
Up or Down
Gradient
Connected to a
Municipal Water
Supply
Usage
310 feet Northeast
230 feet Southeast
WSW-11 6837-77-9076
880 feet Southwest
730 feet South
6837-87-1635
WSW-1 6837-77-7771 Kerry D. Smith 215 feet Southwest Yes
WSW-4
Crossgradient
Downgradient
Crossgradient
1143 Wooded Avenue
John F. and Clara L. Southern
WSW-10 6837-77-5043 Pauline C. Haley
WSW-12 6837-87-5714
6837-77-3761
Inactive
James and Sandra L. Davis No
550 feet East
635 feet East
Marco A. and Audanel Tapia
Active Potable
625 feet Southwest No
Yes Inactive
WSW-13 6837-87-6704 Cynthia L. Connor and Deneisha
Wilson Yes Inactive
Upgradient
Downgradient
Downgradient
Inactive
SC Deacons LLC
Yes
Oscar A. Zepeda 915 feet Southwest
Active Potable
4612 Old Rural Hall Road
Naraian and Boadwatti Roopchan
6837-87-1754 John F. and Clara L. Southern 200 feet East No
WSW-9 Yes6837-77-1441
WSW-7
WSW-8
WSW-6
Inactive
Yes
WSW-3 6837-77-5934 Magallon O. Rodriguez Zulirma 455 feet Northwest Yes Inactive
6837-87-2955
WSW-5 6837-87-1861 Sanda Starr Wright 200 feet East No Active Potable4511 Baux Mountain Road
Winston Salem, NC 27105
Crossgradient
Crossgradient
Downgradient
Downgradient
Crossgradient
Inactive
Inactive
Inactive
Downgradient
Yes
InactiveWSW-2 6837-77-6700 Delois N. Mansanto 380 feet Southwest Downgradient Yes1168 Wooded Avenue
WSW-14 6837-87-5906 Loretta Rupchand Sukharam and
Deochand Rupchand
66 Motor Road
Winston Salem, NC 27105
WSW-15
WSW-16 6837-88-3243 Juan F. Larios 4529 Baux Mountain Road 4529 Baux Mountain Road
Winston Salem, NC 27105
4724 Old Rural Hall Road 4724 Old Rural Hall Road
Winston Salem, NC 27105
4515 Baux Mountain Road
4511 Baux Mountain Road
1168 Wooded Avenue
Winston Salem, NC 27105
1143 Wooded Avenue
Winston Salem, NC 27105
13 Arita Circle
Winston Salem, NC 27105
214 Betsy Drive
Winston Salem, NC 27105
214 Betsy Drive
Winston Salem, NC 271054505 Baux Mountain Road
1120 S Wooded Avenue
101 E Washington Street, Suite
400
Greenville, SC 29601
0 Baux Mountain Road
1006 S Wooded Avenue 1006 S Wooded Avenue
Winston Salem, NC 27105
4612 Old Rual Hall Road
Winston Salem, NC 27105
1241 Opportunity Road
Winston Salem, NC 27105
1122 Ada Avenue
Winston Salem, NC 271051122 Ada Avenue
1241 Opportunity Road
1245 Opportunity Road 1476 E Sedgefield Road
Winston Salem, NC 27107
1328 Utopia Road 560 feet Northeast Downgradient Yes Inactive
6837-88-5105 Johnnie M. Ingram 1318 Midway Road 1318 Midway Road
Winston Salem, NC 27105 645 feet Northeast Downgradient Yes Inactive
580 feet Northeast Downgradient Yes Inactive
Page 1 of 2
TABLE 1
WATER SUPPLY WELL INFORMATION
BAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
INCIDENT #37353
Well ID Parcel ID Property Owner(s)Property Address Owner Address
Estimated Distance
and Direction from
Source
Up or Down
Gradient
Connected to a
Municipal Water
Supply
Usage
Note:
A receptor survey was conducted in June 2018 by Terracon within a 1,500-foot radius of the site. ATC conducted an updated receptor survey in August 2021 within a 1,000-foot radius of the site.
InactiveWSW-31 6837-67-9471 Juan Jose Gomez Orellana and
Ely Sondra Rodriguez Yes1,025 feet Southwest Downgradient
WSW-27
WSW-17
WSW-18
WSW-19
WSW-20
WSW-23
WSW-22
WSW-21
WSW-26
WSW-25
WSW-24
WSW-30
WSW-29
WSW-28
6837-78-8583 Argelia Guzman 4835 Old Rural Hall Road 3529 Maxton Trail
Winston Salem, NC 27107 765 feet North Crossgradient No Inactive
6837-68-9099 Cresten Properties, LLC 1103 Wooded Avenue 5668 Regents Park Road
Kernersville, NC 27284 1,025 feet Northwest Downgradient No Active Potable
6837-68-6311 Kevin W. and Melanie Blackwell 211 Quail Drive 211 Quail Drive
Winston Salem, NC 27105 1,480 feet Northwest Downgradient No Active Potable
6837-67-5926 Omar Quitero and Mericela
Aparicio 217 Quail Drive 217 Quail Drive
Winston Salem, NC 27105 1,450 feet West Downgradient No Active Potable
6837-67-5669 Mary Blair 223 Quail Drive 223 Quail Drive
Winston Salem, NC 27105 1,425 feet West Downgradient No Active Potable
6837-67-6254 Ana Christina Gutierrez 1021 Ada Avenue 1021 Ada Avenue
Winston Salem, NC 27105 1,440 feet Southwest Downgradient No Active Potable
6837-67-8234 Calvin Jennings and Shirley M.
Jones 1035 Ada Avenue 1035 Ada Avenue
Winston Salem, NC 27105 1,270 feet Southwest Downgradient No Active Potable
6837-77-2013 Patrick J. and Beverly L.
Lundergan 1106 Ada Avenue 106 Ada Avenue
Winston Salem, NC 27105 1,080 feet Southwest Downgradient Yes Inactive
6837-97-0409 Jose I. and Blanca M. Espinal 1280 Opportunity Road 3970 N Liberty Street
Winston Salem, NC 27105 1,080 feet Southeast Downgradient Yes Active
Nonpotable
6837-88-8313 Calvin T. Chisom 1329 Midway Road 1329 Midway Road
Winston Salem, NC 27105 1,000 feet Northeast Downgradient Yes Active
Nonpotable
6837-88-2812 Ruth H. Martin Heirs 1225 Motor Road 404 McCanless Street
Winston Salem, NC 27105 1,070 feet North Downgradient Yes Active
Nonpotable
6837-77-7661 Darryl and Maria Nella Floyd 4720 Old Rural Hall Road 4720 Old Rural Hall Road
Winston Salem, NC 27105 225 feet Southwest Crossgradient Yes Inactive
Yes Active
Nonpotable
6837-87-4916 Maryan Roopchan 1324 Utopia Road 1324 Utopia Road
Winston Salem, NC 27105 500 feet Northeast Downgradient
1004 S Wooded Avenue 1004 Wooded Avenue
Winston Salem, NC 27105
Yes Inactive
6837-87-6956 Tonya Ann McCollum 1340 Utopia Road 1340 Utopia Road
Winston Salem, NC 27105 725 feet Northeast Downgradient
Page 2 of 2
TABLE 2
WELL CONSTRUCTION AND GROUNDWATER ELEVATION DATA
BAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
INCIDENT #37353
Well ID Date
Installed
Well Casing
Depth (ft)
Screened
Interval (ft)
Depth of
Well (ft)
TOC
Elevation
(ft)
Date
Measured
Depth to
Water (ft
btoc)
Groundwater
Elevation (ft)
03/04/10 23.19 76.81
05/03/11 25.42 74.58
02/24/12 26.33 73.67
06/07/12 26.06 73.94
01/10/13 28.00 72.00
12/03/14 27.00 73.00
06/06/18 25.95 74.05
08/20/21 21.06 78.94
02/16/22 23.52 76.48
03/04/10 23.78 76.39
05/03/11 25.90 74.27
02/24/12 26.75 73.42
06/07/12 26.30 73.87
01/10/13 28.78 71.39
12/03/14 28.03 72.14
06/06/18 26.32 73.85
08/20/21 22.06 78.11
02/16/22 24.21 75.96
05/18/10 24.73 77.15
05/03/11 27.14 74.74
02/24/12 28.15 73.73
06/07/12 29.26 72.62
01/10/13 29.99 71.89
12/03/14 29.09 72.79
06/06/18 26.50 75.38
08/20/21 22.94 78.94
02/16/22 25.18 76.70
05/18/10 23.08 77.70
05/03/11 25.47 75.31
02/24/12 26.50 74.28
06/07/12 26.13 74.65
01/10/13 27.98 72.80
12/03/14 26.62 74.16
06/06/18 26.20 74.58
08/20/21 20.40 80.38
02/16/22 23.22 77.56
05/18/10 24.41 76.14
05/03/11 26.53 74.02
02/24/12 27.35 73.20
06/07/12 27.10 73.45
01/10/13 29.28 71.27
12/03/14 28.55 72.00
06/06/18 27.00 73.55
08/20/21 22.81 77.74
02/16/22 24.92 75.63
MW-6 02/11/22 15 15-35 35 100.33 02/16/22 23.53 76.80
Notes:
MW-5 04/22/10 13 13-35 35 100.55
MW-4 04/22/10 13 13-35 35 100.78
35 100.17
MW-1 03/03/10 13 13-35 35 100.00
MW-3 04/22/10 13 13-35 35 101.88
3. ft = feet.
4. Top of casing elevations measured against MW-1, which was given an arbitrary elevation of 100.00 feet.
MW-2 03/03/10 13 13-35
1. TOC = Top of Casing.
2. btoc = below top of casing.
Page 1 of 1
TABLE 3
FIELD PARAMETERS
BAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
INCIDENT #37353

Monitoring Well Date
Temperature (oC)Specific Conductivity (µs/cm)Dissolved Oxygen (mg/L)pH (SU)ORP (mV)8/20/2021
2/16/2022
8/20/2021 20.2 381.6 4.09 4.88 240.7
2/16/2022 15.9 206.0 3.29 4.73 290.9
8/20/2021 21.7 274.3 1.76 5.07 228.6
2/16/2022 15.1 216.9 4.75 5.00 299.3
8/20/2021 23.3 197.9 1.33 4.82 258.6
2/26/2022 17.1 237.3 1.05 4.58 291.1
8/20/2021 20.8 191.0 3.65 4.98 275.9
2/16/2022 17.5 138.1 3.90 4.87 256.9
MW-6 2/16/2022
Notes:
1. oC = Degrees Celsius.
2. mg/L = milligrams per liter.
3. µs/cm = micro Siemens per centimeter.
4. SU = Standard Units.
5. ORP = Oxidation Reduction Potential.
6. mV = Millivolts.
Not Measured - Petroleum Odor
Not Measured - Petroleum Odor and Sheen
Not Measured - Petroleum Odor and Sheen
MW-1
MW-2
MW-3
MW-4
MW-5
Page 1 of 1
TABLE 4
GROUNDWATER ANALYTICAL RESULTS
BAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
INCIDENT #37353
Well ID Date
Collected
BenzeneTolueneEthylbenzeneXylenes (Total)MTBEIsopropyl ether (IPE)NaphthaleneIsopropylbenzene1,2,4-Trimethylbenzene1,3,5-Trimethylbenzenen-Butylbenzenen-Propylbenzene1,2-Dibromoethane1,2-DichloroethaneAcetoneChloroform2-HexanoneStyreneTetrachloroethyleneMW-1 2/16/2022 1,030 9,220 1,090 6,460 <100 <100 352 40.2J 1,240 355 <100 142 156 <40 265J <100 <200 <100 <100
MW-2 2/16/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <10 0.32J <1.0 <0.50 <0.50
MW-3 2/16/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <10 0.34J <1.0 <0.50 <0.50
MW-4 2/16/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <10 <0.50 <1.0 <0.50 <0.50
MW-5 2/16/2022 64.4 1.8 7.3 49.0 13.1 6.0 9.4 0.55 14.8 4.2 0.12J 1.1 3.2 2.4 <10 <0.50 <1.0 0.76 1.1
MW-6 2/16/2022 2,770 1,180 1,020 4,290 38.0 31.2 352 51.9 625 178 <25 55.7 <25 94.5 2,000 <25 671 46.0 <25
1 600 600 500 20 70 6 70 400 400 70 70 0.02 0.4 6,000 70 40 70 0.7
5,000 260,000 80,000 50,000 20,000 70,000 6,000 30,500 28,500 24,100 5,900 26,100 50 400 6,000,000 70,000 40,000 70,000 700
Notes:
1. "<" or ND = Not detected at or above the laboratory reporting limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb).
3. Concentrations in bold equal or exceed the corresponding 15A NCAC 02L .0202 Groundwater Quality Standards (2L Standard) - January 2021.
6. J = Estimated concentration; constituent was postively identified at a concentration above the laboratory detection limit but below the laboratory reporting limit.
Analytical Method SM6200B
2L Standard
GCL
5. MTBE = Methyl tert-butyl ether.
4. Concentrations in italics equal or exceed the corresponding NCDEQ Gross Contamination Levels (GCLs) - January 2021.
Page 1 of 1
TABLE 5
HISTORICAL GROUNDWATER ANALYTICAL RESULTS
BAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
INCIDENT #37353
03/04/10 2,300 8,100 920 5,100 630 98 99 390 810 NA 1,000 270 NA NA NA NA 110 NA NA 100 <12
04/22/10 9,300 26,000 2,500 13,300 1,800 350 630 790 2,500 NA 2,100 520 NA NA NA <5.9 200 NA 100 <3.4 <9.6
05/03/11 3,100 16,000 1,400 9,000 1,300 230 360 810 2,600 J NA 1,400 450 NA NA NA ND ND NA ND ND ND
02/24/12 2,300 10,000 1,500 930 930 150 210 590 ND 79 1,600 460 ND ND 48 J ND 190 ND ND ND ND
06/07/12 3,400 16,000 2,000 10,000 1,100 230 300 630 ND 85 1,800 660 ND ND 68 ND 280 ND ND ND ND
01/10/13 1,350 6,330 1,000 5,660 660 115 142 413 ND 45.3 1,340 396 ND ND 33.6 ND 145 ND ND ND ND
12/03/14 1,170 4,780 792 4,780 318 61.3 88 363 ND 35 1,030 298 ND ND <25 ND 102 ND ND ND ND
06/06/18 980 8,400 1,300 7,400 76 30 110 480 380 53 1,600 440 31 21 12 6.9 180 120 47 16 <0.5
08/20/21 2,290 16,500 2,900 16,400 <100 <100 383 1,060 <2,000 83.3 J 2,700 656 32.4 J <100 <40 <100 262 <200 <100 68.4 J <100
02/16/22 1,030 9,220 1,090 6,460 <100 <100 156 352 265J 40.2 J 1,240 355 <100 <100 <40 <100 142 <200 <100 <100 <100
03/04/10 <0.04 3.5 1.4 7.0 1.1 <0.08 <0.11 <0.23 <0.62 NA 0.53 0.64 NA NA NA NA <0.09 NA NA <0.05 <0.12
04/22/10 <0.05 <0.05 <0.05 <0.17 <0.056 <0.042 <0.041 <0.09 <1.5 NA <0.038 <0.038 NA NA NA <0.059 <0.059 NA <0.048 <0.034 <0.096
05/03/11 ND ND ND ND ND ND ND ND ND NA ND ND NA NA NA ND ND NA ND ND ND
02/24/12 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.66
06/07/12 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.5
01/10/13 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.36 J
06/06/18 <10 <0.50 <0.5 <1.5 <1.0 <0.5 <0.50 <1.0 <10 <0.5 <0.50 <0.50 <0.50 <20.0 <0.50 <0.5 <0.50 <1.0 <1.0 <0.50 0.52
08/20/21 <0.50 <0.50 <0.50 <0.50 0.99 <0.50 <0.50 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50
02/16/22 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50
04/22/10 <0.05 <0.06 <0.05 <0.17 <0.056 <0.042 <0.041 <0.09 <1.5 NA <0.038 <0.038 NA NA NA <0.059 <0.059 NA <0.048 <0.059 <0.096
05/03/11 ND ND ND ND ND ND ND ND ND NA ND ND NA NA NA ND ND NA ND ND ND
02/24/12 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
06/07/12 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
01/10/13 ND 0.43 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND
06/06/18 <0.50 <0.50 <0.5 <1.5 <1.0 <0.5 <0.5 <1.0 <10 <0.5 <0.50 <0.50 <0.50 <20.0 <0.50 <0.5 <0.50 <1.0 <1.0 <0.50 <0.5
08/20/21 <0.50 <0.50 <0.50 <0.50 0.30 J <0.50 <0.50 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50
02/16/22 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50
1 600 600 500 20 70 0.02 6 6,000 70 400 400 70 70 0.4 25 70 40 100 70 0.7
5,000 260,000 80,000 50,000 20,000 70,000 50 6,000 6,000,000 30,500 28,500 24,100 5,900 8,800 400 11,700 26,100 40,000 100,000 70,000 700
Notes:
1. "<" or ND = Not detected at or above the laboratory reporting limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb).
3. Concentrations in bold equal or exceed the corresponding 15A NCAC 02L .0202 Groundwater Quality Standards (2L Standard) - January 2021.
4. Concentrations in italics equal or exceed the corresponding NCDEQ Gross Contaminant Levels (GCLs) - January 2021.
5. J = Estimated concentration; constituent was positively identified above laboratory detection limit but below laboratory reporting limit.
6. MTBE = Methyl tert-butyl ether.Methyl Isobutyl Ketone Methyl Butyl Ketonen-PropylbenzeneMW-1
MW-2
MW-3
GCL Styrenen-ButylbenzeneAcetone1,2-Dibromoethane(EDB)2L Standard
Well ID
7. NA = Not Analyzed/Available.1,2,4-Trimethylbenzenesec-Butylbenzenep-IsopropyltolueneEthylbenzeneTetrachloroethylene1,2-DichloroethaneAnalytical Method SM6200B
Xylenes (Total)MTBEIsopropyl ether (IPE)1,3,5-TrimethylbenzeneIsopropylbenzeneDate
Collected
BenzeneTolueneNaphthalenePage 1 of 2
TABLE 5
HISTORICAL GROUNDWATER ANALYTICAL RESULTS
BAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
INCIDENT #37353
Methyl Isobutyl Ketone Methyl Butyl Ketonen-PropylbenzeneStyrenen-ButylbenzeneAcetone1,2-Dibromoethane(EDB)Well ID
1,2,4-Trimethylbenzenesec-Butylbenzenep-IsopropyltolueneEthylbenzeneTetrachloroethylene1,2-DichloroethaneAnalytical Method SM6200B
Xylenes (Total)MTBEIsopropyl ether (IPE)1,3,5-TrimethylbenzeneIsopropylbenzeneDate
Collected
BenzeneTolueneNaphthalene04/22/10 <0.05 4.0 3.7 13.4 <0.056 <0.042 <0.041 4.0 <1.5 NA 59 34 NA NA NA 5 14 NA <0.048 <0.059 <0.096
05/03/11 5.3 21 11 58 ND ND 1.0 4.3 64 NA 19 13 NA NA NA 1.3 3.6 NA ND ND ND
02/24/12 4.1 23 16 75 ND ND 0.31 3 ND 3.8 30 16 ND ND 0.38 J ND 4.9 ND ND ND ND
06/07/12 2.6 1.5 4.7 23 ND ND ND 2.1 ND 2.4 13 9 ND ND ND ND 2.4 ND ND ND ND
01/10/13 4.2 5.1 4.1 50.7 ND ND ND 3.6 ND 4.3 39.1 19.2 ND ND ND ND 3.2 ND ND ND ND
06/06/18 0.79 <0.5 <0.5 3.5 <1.0 <0.5 <0.5 <1.0 <10 0.76 6 3.5 1.6 1.6 <0.50 <0.50 1.4 <1.0 <1.1 <0.5 <0.5
08/20/21 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50
02/16/22 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 <0.50 <0.50 <0.50 <0.50 <0.20 <0.50 <0.50 <1.0 <0.50 <0.50 <0.50
04/22/10 <0.05 <0.057 <0.05 <0.17 2.7 <0.042 <0.041 <0.094 <1.5 NA <0.038 <0.038 NA NA NA <0.059 <0.059 NA <0.048 <0.059 3.9
05/03/11 ND 1.2 ND 0.87 J 1.5 ND ND 1.2 8.6 J NA 0.57 ND NA NA NA ND ND NA ND ND 4.4
02/24/12 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4.6
06/07/12 ND ND ND ND 0.98 J ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4.8
01/10/13 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3.2
06/06/18 <0.5 <0.5 <0.5 <1.5 1.2 <0.5 <0.5 <1.0 <10 <0.5 <0.5 <0.5 <0.5 <0.5 <0.50 <0.5 <0.5 <1.0 <1.0 <0.5 3.3
08/20/21 13.0 <0.50 <0.50 <0.50 2.6 1.4 0.79 1.6 <10 <0.50 2.6 0.81 <0.50 <0.50 0.79 <0.50 <0.50 <1.0 <0.50 <0.50 1.9
02/16/22 64.4 1.8 7.3 49.0 13.1 6.0 3.2 9.4 <10 0.55 14.8 4.2 0.12 J <0.50 2.4 <0.50 1.1 <1.0 <0.50 0.76 1.1
MW-6 02/16/22 2,770 1,180 1,020 4,290 38.0 31.2 <25 352 2,000 51.9 625 178 <25 <25 94.5 <25 55.7 671 <25 46.0 <25
1 600 600 500 20 70 0.02 6 6,000 70 400 400 70 70 0.4 25 70 40 100 70 0.7
5,000 260,000 80,000 50,000 20,000 70,000 50 6,000 6,000,000 30,500 28,500 24,100 5,900 8,800 400 11,700 26,100 40,000 100,000 70,000 700
Notes:
1. "<" or ND = Not detected at or above the laboratory reporting limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb).
3. Concentrations in bold equal or exceed the corresponding 15A NCAC 02L .0202 Groundwater Quality Standards (2L Standard) - January 2021.
4. Concentrations in italics equal or exceed the corresponding NCDEQ Gross Contaminant Levels (GCLs) - January 2021.
5. J = Estimated concentration; constituent was positively identified above laboratory detection limit but below laboratory reporting limit.
6. MTBE = Methyl tert-butyl ether.
7. NA = Not Analyzed/Available.
2L Standard
GCL
MW-5
MW-4
Page 2 of 2

Baux Mountain 76

ATC Project No. SLC3735302 NCDEQ State Lead Program

FIGURES

2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
[phone]
FIGURE 1
SITE TOPOGRAPHIC MAP
PROJECT NO: SLC3735301
REVIEWED BY: GA SCALE: 1” = 1,000’DATE: 8/31/2021
BAUX MOUNTAIN 76–INCIDENT #37353
4801 OLD RURAL HALL ROAD
WINSTON SALEM, NORTH CAROLINA
Source: USGS 2019 Walkertown, NC Quadrangle Topographic Map
N
Site
BAUX MOUNTAIN ROADOLD RURAL
HALL
ROADWOODEDAVENUEOPPORTUNITY
ROADMW-4MW-1MW-2MW-5MW-3SITEGARAGEWSW-1FORMER 4,000 GAL.GASOLINE UST(2) FORMER 8,000GAL. GASOLINEUSTFORMER 550 GAL.USED OIL TANKFORMER 275 GAL.HEATING OIL TANKFORMERDISPENSERISLANDFORMERDISPENSERISLAND10SCALE: 1" = 30'3002030NCMW-6PPTPPPPPPTOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHU
OHU
OHUOHU
OHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHU
OHU
OHU
POHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUPOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOH
U
OHU
OHU
OH
U OHUOHUOHUOHUOHUOHUOHUOHUOHUOHUWWWWWWWWWWWWWWWWWWWWWCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCC
C LEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEMONITORING WELLWell IdentificationMW-1WSW-1WATER SUPPLY WELLWell IdentificationWWWATER LINEOHUOVERHEAD UTILITYCCUNDERGROUND COMMUNICATION LINEUTILITY POLE W/ TRANSFORMERUTILITY POLECOMMUNICATION VAULTPTPCOHU
OHU
OHU
OHU
OHU
OHU
Figure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:02/28/2022SEE LOWER LEFTBAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #37353
SLC3735302AS SHOWNDH
AS2NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
H:\2022\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\BAUX MOUNTAIN 76\SLC3735302-SITE.DWG, FIG2
SITE MAP
2725 E. Millbrook Road, Suite 121
Raleigh, NC 27604
[phone]
FIGURE 3
POTENTIAL RECEPTOR MAP
PROJECT NO: SLC3735301
REVIEWED BY: GA SCALE: 1” = 620’DATE: 8/31/2021
BAUX MOUNTAIN 76–INCIDENT #37353
4801 OLD RURAL HALL ROAD
WINSTON SALEM, NORTH CAROLINA
Source: Forsyth County NC GIS
Inactive Water Supply Well
Active Water Supply Well
WSW-7
WSW-6
WSW-1
N
WSW-3
WSW-5
WSW-2
WSW-4
Site
WSW-11
WSW-9
WSW-10
WSW-12 WSW-13
8
500
15
1
28
2
3 4
5
6
7
9
31
10 11
12 13
14
15
30
29
16
17
18
19
20
21
22 23
24
25
26
27
1,500 ft
1,000 ft
500 ft
Site
LEGEND
BAUX MOUNTAIN ROADOLD RURAL
HALL
ROADWOODEDAVENUEOPPORTUNITY
ROADMW-4MW-1MW-2MW-5MW-3SITEGARAGEWSW-1FORMER 4,000 GAL.GASOLINE UST(2) FORMER 8,000GAL. GASOLINEUSTFORMER 550 GAL.USED OIL TANKFORMER 275 GAL.HEATING OIL TANKFORMERDISPENSERISLANDFORMERDISPENSERISLAND10SCALE: 1" = 30'3002030NCMW-6PPTPPPPPPTOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHU
OHU
OHUOHU
OHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHU
OHU
OHU
POHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUPOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOH
U
OHU
OHU
OH
U OHUOHUOHUOHUOHUOHUOHUOHUOHUOHUWWWWWWWWWWWWWWWWWWWWWCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCC
C LEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEWSW-1WATER SUPPLY WELLWell IdentificationWWWATER LINEOHUOVERHEAD UTILITYCCUNDERGROUND COMMUNICATION LINEUTILITY POLE W/ TRANSFORMERUTILITY POLECOMMUNICATION VAULTPTPCOHU
OHU
OHU
OHU
OHU
OHU 77.0GROUNDWATER ELEVATION CONTOUR(DASHED WHERE INFERRED)GROUNDWATER FLOW DIRECTIONMW-275.96MONITORING WELLWell IdentificationRelative Groundwater Elevation (ft)75.6376.8077.5676.4875.9676.7076.0
77.5077.076.5Figure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:03/08/2022SEE LOWER LEFTBAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #37353
SLC3735302AS SHOWNDH
AS4NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater elevation measured February 16, 2022.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
H:\2022\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\BAUX MOUNTAIN 76\SLC3735302-POT.DWG, FIG4
GROUNDWATER ELEVATION CONTOUR MAP
BAUX MOUNTAIN ROADOLD RURAL
HALL
ROADWOODEDAVENUEOPPORTUNITY
ROADMW-4MW-1MW-2MW-5MW-3SITEGARAGEWSW-1FORMER 4,000 GAL.GASOLINE UST(2) FORMER 8,000GAL. GASOLINEUSTFORMER 550 GAL.USED OIL TANKFORMER 275 GAL.HEATING OIL TANKFORMERDISPENSERISLANDFORMERDISPENSERISLAND10SCALE: 1" = 30'3002030NCMW-6PPTPPPPPPTOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHU
OHU
OHUOHU
OHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHU
OHU
OHU
POHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUPOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOH
U
OHU
OHU
OH
U OHUOHUOHUOHUOHUOHUOHUOHUOHUOHUWWWWWWWWWWWWWWWWWWWWWCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCC
C LEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEWSW-1WATER SUPPLY WELLWell IdentificationWWWATER LINEOHUOVERHEAD UTILITYCCUNDERGROUND COMMUNICATION LINEUTILITY POLE W/ TRANSFORMERUTILITY POLECOMMUNICATION VAULTPTPCOHU
OHU
OHU
OHU
OHU
OHU 100BENZENE ISOCONCENTRATION CONTOUR(DASHED WHERE INFERRED) (µg/L)MW-564.4MONITORING WELLWell IdentificationBenzene Concentration (µg/L)64.42,770<0.501,030<0.50<0.501,00
0
1
0
0
10
1
Figure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:04/22/2022SEE LOWER LEFTBAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #37353
SLC3735302AS SHOWNDH
AS5NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater samples collected February 16, 2022.
3.Results measured in micrograms per liter (µg/L).
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET
H:\2022\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\BAUX MOUNTAIN 76\SLC3735302-BENZ.DWG, FIG5
DISSOLVED BENZENE
ISOCONCENTRATION MAP
BAUX MOUNTAIN ROADOLD RURAL
HALL
ROADWOODEDAVENUEOPPORTUNITY
ROADMW-4MW-1MW-2MW-5MW-3SITEGARAGEWSW-1FORMER 4,000 GAL.GASOLINE UST(2) FORMER 8,000GAL. GASOLINEUSTFORMER 550 GAL.USED OIL TANKFORMER 275 GAL.HEATING OIL TANKFORMERDISPENSERISLANDFORMERDISPENSERISLAND10SCALE: 1" = 30'3002030NCMW-6PPTPPPPPPTOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHU
OHU
OHU
OHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHU
OHU
OHU
POHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUPOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHUOHU
OHU
OH
U
OH
U OHUOHUOHUOHUOHUOHUOHUOHUOHUOHUWWWWWWWWWWWWWWWWWWWWWCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCCCCCCCCCC
C LEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEMONITORING WELLWell IdentificationMW-1WSW-1WATER SUPPLY WELLWell IdentificationWWWATER LINEOHUOVERHEAD UTILITYCCUNDERGROUND COMMUNICATION LINEUTILITY POLE W/ TRANSFORMERUTILITY POLECOMMUNICATION VAULTPTPCOHU
OHU
OHU
OHU
OHU
OHU
Figure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2022\1 OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\BAUX MOUNTAIN 76\SLC3735302-GW.DWG, FIG6
ADDITIONAL CHEMICALS OF CONCERN
IN GROUNDWATER03/10/2022SEE LOWER LEFTBAUX MOUNTAIN 76
4801 OLD RURAL HALL ROAD
WINSTON SALEM, FORSYTH COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #37353
SLC3735302AS SHOWNDH
AS6NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Groundwater samples collected February 16, 2022.
3.Results measured in micrograms per liter (µg/L).
4.Only constituents exceeding 2L Standards are shown.
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET

Baux Mountain 76

ATC Project No. SLC3735302 NCDEQ State Lead Program

APPENDIX A

FIELD NOTES

Baux Mountain 76

ATC Project No. SLC3735302 NCDEQ State Lead Program

APPENDIX B

SITE PHOTOGRAPHS

Photo 1: Former Baux Mountain 76 site facing north. Photo 2: Former Baux Mountain 76 site facing southeast.
Site Photographs

Baux Mountain 76 – Incident #37353

4801 Old Rural Hall Road
Winston-Salem, Forsyth County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Aaron Springer Site ID: Incident #37353 ATC Project No.: SLC3735302

Photo 3: Former Baux Mountain 76 site facing west. Photo 4: Monitoring well MW-1 facing northeast.
Site Photographs

Baux Mountain 76 – Incident #37353

4801 Old Rural Hall Road
Winston-Salem, Forsyth County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Aaron Springer Site ID: Incident #37353 ATC Project No.: SLC3735302

Photo 5: Monitoring well MW-2 facing east. Photo 6: Monitoring well MW-3 facing west.
Site Photographs

Baux Mountain 76 – Incident #37353

4801 Old Rural Hall Road
Winston-Salem, Forsyth County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Aaron Springer Site ID: Incident #37353 ATC Project No.: SLC3735302

Photo 7: Monitoring well MW-4 facing north. Photo 8: Monitoring well MW-5 facing northwest.
Site Photographs

Baux Mountain 76 – Incident #37353

4801 Old Rural Hall Road
Winston-Salem, Forsyth County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Aaron Springer Site ID: Incident #37353 ATC Project No.: SLC3735302

Photo 9: Monitoring well MW-6 facing northwest. Photo 10: Monitoring well MW-6 installation (2/11/2022) facing northwest.
Site Photographs

Baux Mountain 76 – Incident #37353

4801 Old Rural Hall Road
Winston-Salem, Forsyth County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Aaron Springer Site ID: Incident #37353 ATC Project No.: SLC3735302

Photo 11: Water supply well WSW-5. Photo 12: Water supply well WSW-6.
Site Photographs

Baux Mountain 76 – Incident #37353

4801 Old Rural Hall Road
Winston-Salem, Forsyth County, North Carolina

2725 E. Millbrook Road, Suite 121
Raleigh, North Carolina
Tel: [phone] Fax: [phone]
Photos Taken By: Aaron Springer Site ID: Incident #37353 ATC Project No.: SLC3735302

Baux Mountain 76

ATC Project No. SLC3735302 NCDEQ State Lead Program

APPENDIX C

MONITORING WELL CONSTRUCTION RECORD AND BORING LOG (MW-6)

WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only:
Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 6-6-2018
1.Well Contractor Information:
Well Contractor Name
NC Well Contractor Certification Number
Company Name
2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.)
3.Well Use (check well use):
Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation □Wells > 100,000 GPDNon-Water Supply Well: □Monitoring □Recovery
Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks)
4. Date Well(s) Completed: Well ID#
5a. Well Location:
Facility/Owner Name Facility ID# (if applicable)
Physical Address, City, and Zip
County Parcel Identification No. (PIN)
5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient)
N W
6.Is(are) the well(s): □Permanent or □Temporary
7.Is this a repair to an existing well: □Yes or □No
If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form.
8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wellsdrilled:
9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′)
10.Static water level below top of casing: (ft.) If water level is above casing, use “+”
11. Borehole diameter: (in.)
12. Well construction method:(i.e. auger, rotary, cable, direct push, etc.)
FOR WATER SUPPLY WELLS ONLY:
13a. Yield (gpm) Method of test:
13b. Disinfection type: Amount:
14. WATER ZONES
FROM TO DESCRIPTION
ft. ft.
ft. ft.
15. OUTER CASING (for multi-cased wells) OR LINER (if applicable)FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in.
16. INNER CASING OR TUBING (geothermal closed-loop)FROM TO DIAMETER THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
17. SCREENFROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL
ft. ft. in.
ft. ft. in.
18. GROUT
FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT
ft. ft.
ft. ft.
ft. ft.
19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD
ft. ft.
ft. ft.
20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.)
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
ft. ft.
21. REMARKS
22.Certification:
Signature of Certified Well Contractor Date
By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner.
23.Site diagram or additional well details:You may use the back of this page to provide additional well construction info (add 'See Over' in Remarks Box). You may also attach additional pages if necessary.
24.SUBMITTAL INSTRUCTIONS
Submit this GW-1 within 30 days of well completion per the following:
24a. For All Wells: Original form to Division of Water Resources (DWR), Information Processing Unit, 1617 MSC, Raleigh, NC 27699-1617
24b. For Injection Wells: Copy to DWR, Underground Injection Control (IUC) Program, 1636 MSC, Raleigh, NC 27699-1636
24c. For Water Supply and Open-Loop Geothermal Return Wells: Copy to the county environmental health department of the county where installed
24d. For Water Wells producing over 100,000 GPD: Copy to DWR, CCPCUA Permit Program, 1611 MSC, Raleigh, NC 27699-1611
03-08-2022 S:\Enviro\NCDENR State Lead Contract\Herb Sites\Baux Mountain 76\Boring Logs\MW-6.borClient: NCDEQ State Lead Program
ATC Project No. SLC3735302
Winston-Salem, North Carolina
4801 Old Rural Hall Road
Baux Mountain 76 - Incident #37353
ft BGS = feet below ground surface.
Depth to water gauged on 2/16/2022 at 23.53 feet below top of casing.
MONITORING WELL: MW-6
(Page 1 of 1)Depth In Feet0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35 USCSCL
CL
ML
ML GRAPHICDESCRIPTION
Concrete.
SANDY CLAY, light brown with reddish hue, some silt.
SILTY CLAY, light brown with reddish hue, tan clay layers with black organic veins.
CLAYEY SILT, light brown with reddish hue, tan clay layers with black organic
veins.
SILT, brown, micaceous. Saturated at 25 ft BGS. Slight to moderate petroleum odor at 25 ft BGS.
End of boring.
Elevation: 100.33
Well: MW-6
Grout
Bentonite
Sand
Cover
Casing
Screen
Date(s) Drilled : 2/11/2022
Drilling Contractor : Geologic Exploration, Inc.
Drilling Method : Hand Auger
: Hollow Stem Auger
Boring Diameter : 7.25 inches
Sampling Method : Soil Cuttings
Sampling Interval : Continuous
Logged By : Aaron D. Springer

Baux Mountain 76

ATC Project No. SLC3735302 NCDEQ State Lead Program

APPENDIX D

LABORATORY ANALYTICAL RESULTS

03/04/22
Technical Report for
Atlas
Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
SLC3735302
SGS Job Number: LA76934
Sampling Date: 02/16/22
Report to:
ATC Group Services LLC.
2725 East Millbrook Road Suite 121
Raleigh, NC 27604
[e-mail]; [e-mail]
ATTN: Emily Fuller
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: Penny Cormier 337-237-4775
Ron Benjamin
Lab Director
Scott, LA 03/04/22
e-Hardcopy 2.0
Automated Report
49
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 49
LA76934
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................6
3.1: LA76934-1: MW-1 .......................................................................................................7
3.2: LA76934-2: MW-2 .......................................................................................................10
3.3: LA76934-3: MW-3 .......................................................................................................13
3.4: LA76934-4: MW-4 .......................................................................................................16
3.5: LA76934-5: MW-5 .......................................................................................................19
3.6: LA76934-6: MW-6 .......................................................................................................22
3.7: LA76934-7: FIELD BLANK ........................................................................................25
Section 4: Misc. Forms ............................................................................................................28
4.1: Chain of Custody ...........................................................................................................29
Section 5: MS Volatiles - QC Data Summaries .....................................................................31
5.1: Method Blank Summary ................................................................................................32
5.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................38
5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................44 123452 of 49
LA76934
SGS North America Inc.
Sample Summary
Atlas
Job No:LA76934
Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Project No: SLC3735302
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
LA76934-1 02/16/22 12:45 ADS 02/18/22 AQ Ground Water MW-1
LA76934-2 02/16/22 11:25 ADS 02/18/22 AQ Ground Water MW-2
LA76934-3 02/16/22 11:00 ADS 02/18/22 AQ Ground Water MW-3
LA76934-4 02/16/22 11:50 ADS 02/18/22 AQ Ground Water MW-4
LA76934-5 02/16/22 12:10 ADS 02/18/22 AQ Ground Water MW-5
LA76934-6 02/16/22 12:30 ADS 02/18/22 AQ Ground Water MW-6
LA76934-7 02/16/22 13:25 ADS 02/18/22 AQ Field Blank Water FIELD BLANK
3 of 49
LA769341
Summary of Hits Page 1 of 2
Job Number:LA76934
Account:Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Collected:02/16/22
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA76934-1 MW-1
Acetone 265 J 2000 250 ug/l SM 6200B
Benzene 1030 100 54 ug/l SM 6200B
1,2-Dibromoethane 156 100 47 ug/l SM 6200B
Ethylbenzene 1090 100 40 ug/l SM 6200B
Isopropylbenzene 40.2 J 100 26 ug/l SM 6200B
Naphthalene 352 100 20 ug/l SM 6200B
n-Propylbenzene 142 100 44 ug/l SM 6200B
Toluene 9220 100 59 ug/l SM 6200B
1,2,4-Trimethylbenzene 1240 100 29 ug/l SM 6200B
1,3,5-Trimethylbenzene 355 100 32 ug/l SM 6200B
m,p-Xylene 4320 200 67 ug/l SM 6200B
o-Xylene 2140 100 30 ug/l SM 6200B
Xylene (total)6460 100 32 ug/l SM 6200B
LA76934-2 MW-2
Chloroform 0.32 J 0.50 0.094 ug/l SM 6200B
LA76934-3 MW-3
Chloroform 0.34 J 0.50 0.094 ug/l SM 6200B
LA76934-4 MW-4
No hits reported in this sample.
LA76934-5 MW-5
Benzene 64.4 0.50 0.27 ug/l SM 6200B
n-Butylbenzene 0.12 J 0.50 0.092 ug/l SM 6200B
1,2-Dibromoethane 3.2 0.50 0.24 ug/l SM 6200B
1,2-Dichloroethane 2.4 0.20 0.12 ug/l SM 6200B
Di-Isopropyl Ether 6.0 0.50 0.073 ug/l SM 6200B
Ethylbenzene 7.3 0.50 0.20 ug/l SM 6200B
Isopropylbenzene 0.55 0.50 0.13 ug/l SM 6200B
Methyl Tert Butyl Ether 13.1 0.50 0.068 ug/l SM 6200B
Naphthalene 9.4 0.50 0.10 ug/l SM 6200B
n-Propylbenzene 1.1 0.50 0.22 ug/l SM 6200B
Styrene 0.76 0.50 0.13 ug/l SM 6200B
Tetrachloroethylene 1.1 0.50 0.22 ug/l SM 6200B
Toluene 1.8 0.50 0.29 ug/l SM 6200B
1,2,4-Trimethylbenzene 14.8 0.50 0.15 ug/l SM 6200B
1,3,5-Trimethylbenzene 4.2 0.50 0.16 ug/l SM 6200B
4 of 49
LA769342
Summary of Hits Page 2 of 2
Job Number:LA76934
Account:Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Collected:02/16/22
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
m,p-Xylene 25.2 1.0 0.34 ug/l SM 6200B
o-Xylene 23.8 0.50 0.15 ug/l SM 6200B
Xylene (total)49.0 0.50 0.16 ug/l SM 6200B
LA76934-6 MW-6
Acetone 2000 500 62 ug/l SM 6200B
Benzene 2770 25 14 ug/l SM 6200B
1,2-Dichloroethane 94.5 10 6.1 ug/l SM 6200B
Di-Isopropyl Ether 31.2 25 3.7 ug/l SM 6200B
Ethylbenzene 1020 25 10 ug/l SM 6200B
2-Hexanone 671 50 21 ug/l SM 6200B
Isopropylbenzene 51.9 25 6.6 ug/l SM 6200B
Methyl Tert Butyl Ether 38.0 25 3.4 ug/l SM 6200B
Naphthalene 352 25 5.0 ug/l SM 6200B
n-Propylbenzene 55.7 25 11 ug/l SM 6200B
Styrene 46.0 25 6.3 ug/l SM 6200B
Toluene 1180 25 15 ug/l SM 6200B
1,2,4-Trimethylbenzene 625 25 7.3 ug/l SM 6200B
1,3,5-Trimethylbenzene 178 25 8.1 ug/l SM 6200B
m,p-Xylene 2850 50 17 ug/l SM 6200B
o-Xylene 1450 25 7.4 ug/l SM 6200B
Xylene (total)4290 25 8.1 ug/l SM 6200B
LA76934-7 FIELD BLANK
Acetone 4.5 J 10 1.2 ug/l SM 6200B
Methylene Chloride 0.57 0.50 0.080 ug/l SM 6200B
Naphthalene 0.24 J 0.50 0.10 ug/l SM 6200B
Toluene 0.44 J 0.50 0.29 ug/l SM 6200B
Xylene (total)0.17 J 0.50 0.16 ug/l SM 6200B
5 of 49
LA769342
SGS North America Inc.
Sample Results
Report of Analysis
Scott, LA
Section 3
6 of 49
LA769343
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-1
Lab Sample ID:LA76934-1 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0140789.D 200 03/02/22 19:18 NN n/a n/a V2K3054
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 265 2000 250 ug/l J
71-43-2 Benzene 1030 100 54 ug/l
108-86-1 Bromobenzene ND 100 36 ug/l
74-97-5 Bromochloromethane ND 100 24 ug/l
75-27-4 Bromodichloromethane ND 100 36 ug/l
75-25-2 Bromoform ND 100 20 ug/l
104-51-8 n-Butylbenzene ND 100 18 ug/l
135-98-8 sec-Butylbenzene ND 100 28 ug/l
98-06-6 tert-Butylbenzene ND 100 32 ug/l
56-23-5 Carbon Tetrachloride ND 40 18 ug/l
108-90-7 Chlorobenzene ND 100 33 ug/l
75-00-3 Chloroethane ND 100 11 ug/l
67-66-3 Chloroform ND 100 19 ug/l
95-49-8 o-Chlorotoluene ND 100 33 ug/l
106-43-4 p-Chlorotoluene ND 100 40 ug/l
124-48-1 Dibromochloromethane ND 40 15 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 100 26 ug/l
106-93-4 1,2-Dibromoethane 156 100 47 ug/l
75-71-8 Dichlorodifluoromethane ND 100 24 ug/l
541-73-1 m-Dichlorobenzene ND 100 13 ug/l
95-50-1 o-Dichlorobenzene ND 100 39 ug/l
106-46-7 p-Dichlorobenzene ND 100 43 ug/l
75-34-3 1,1-Dichloroethane ND 100 21 ug/l
107-06-2 1,2-Dichloroethane ND 40 24 ug/l
75-35-4 1,1-Dichloroethylene ND 100 19 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 100 22 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 100 31 ug/l
78-87-5 1,2-Dichloropropane ND 60 25 ug/l
142-28-9 1,3-Dichloropropane ND 100 41 ug/l
594-20-7 2,2-Dichloropropane ND 100 16 ug/l
563-58-6 1,1-Dichloropropene ND 100 23 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 40 20 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
7 of 49
LA7693433.1
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-1
Lab Sample ID:LA76934-1 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
VOA Special List
CAS No.Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 40 11 ug/l
108-20-3 Di-Isopropyl Ether ND 100 15 ug/l
64-17-5 Ethyl Alcohol ND 10000 1700 ug/l
100-41-4 Ethylbenzene 1090 100 40 ug/l
591-78-6 2-Hexanone ND 200 84 ug/l
87-68-3 Hexachlorobutadiene ND 40 22 ug/l
98-82-8 Isopropylbenzene 40.2 100 26 ug/l J
99-87-6 p-Isopropyltoluene ND 100 26 ug/l
74-83-9 Methyl Bromide ND 100 46 ug/l
74-87-3 Methyl Chloride ND 100 13 ug/l
74-95-3 Methylene Bromide ND 100 23 ug/l
75-09-2 Methylene Chloride ND 100 16 ug/l
78-93-3 Methyl Ethyl Ketone ND 5000 57 ug/l
108-10-1 4-Methyl-2-pentanone ND 100 48 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 100 14 ug/l
91-20-3 Naphthalene 352 100 20 ug/l
103-65-1 n-Propylbenzene 142 100 44 ug/l
100-42-5 Styrene ND 100 25 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 100 37 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 40 25 ug/l
127-18-4 Tetrachloroethylene ND 100 45 ug/l
108-88-3 Toluene 9220 100 59 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 100 32 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 100 34 ug/l
71-55-6 1,1,1-Trichloroethane ND 100 33 ug/l
79-00-5 1,1,2-Trichloroethane ND 60 35 ug/l
79-01-6 Trichloroethylene ND 100 36 ug/l
75-69-4 Trichlorofluoromethane ND 100 15 ug/l
96-18-4 1,2,3-Trichloropropane ND 100 4.5 ug/l
95-63-6 1,2,4-Trimethylbenzene 1240 100 29 ug/l
108-67-8 1,3,5-Trimethylbenzene 355 100 32 ug/l
108-05-4 Vinyl Acetate ND 100 14 ug/l
75-01-4 Vinyl Chloride ND 20 15 ug/l
m,p-Xylene 4320 200 67 ug/l
95-47-6 o-Xylene 2140 100 30 ug/l
1330-20-7 Xylene (total)6460 100 32 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 86%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
8 of 49
LA7693433.1
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-1
Lab Sample ID:LA76934-1 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, 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 95%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 49
LA7693433.1
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-2
Lab Sample ID:LA76934-2 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0140764.D 1 03/02/22 06:52 NN n/a n/a V2K3053
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 0.32 0.50 0.094 ug/l J
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
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 49
LA7693433.2
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-2
Lab Sample ID:LA76934-2 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, 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 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
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 102%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 49
LA7693433.2
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-2
Lab Sample ID:LA76934-2 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 98%70-130%
460-00-4 4-Bromofluorobenzene 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
12 of 49
LA7693433.2
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-3
Lab Sample ID:LA76934-3 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0140765.D 1 03/02/22 07:22 NN n/a n/a V2K3053
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 0.34 0.50 0.094 ug/l J
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
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
13 of 49
LA7693433.3
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-3
Lab Sample ID:LA76934-3 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, 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 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
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 100%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
14 of 49
LA7693433.3
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-3
Lab Sample ID:LA76934-3 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 96%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
15 of 49
LA7693433.3
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-4
Lab Sample ID:LA76934-4 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0140766.D 1 03/02/22 07:52 NN n/a n/a V2K3053
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 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
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
16 of 49
LA7693433.4
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-4
Lab Sample ID:LA76934-4 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, 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 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
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 100%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
17 of 49
LA7693433.4
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-4
Lab Sample ID:LA76934-4 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 96%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
18 of 49
LA7693433.4
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-5
Lab Sample ID:LA76934-5 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0140767.D 1 03/02/22 08:22 NN n/a n/a V2K3053
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 64.4 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 0.12 0.50 0.092 ug/l J
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 3.2 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 2.4 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
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
19 of 49
LA7693433.5
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-5
Lab Sample ID:LA76934-5 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, 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 6.0 0.50 0.073 ug/l
64-17-5 Ethyl Alcohol ND 50 8.4 ug/l
100-41-4 Ethylbenzene 7.3 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 0.55 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 13.1 0.50 0.068 ug/l
91-20-3 Naphthalene 9.4 0.50 0.10 ug/l
103-65-1 n-Propylbenzene 1.1 0.50 0.22 ug/l
100-42-5 Styrene 0.76 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 1.1 0.50 0.22 ug/l
108-88-3 Toluene 1.8 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 14.8 0.50 0.15 ug/l
108-67-8 1,3,5-Trimethylbenzene 4.2 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 25.2 1.0 0.34 ug/l
95-47-6 o-Xylene 23.8 0.50 0.15 ug/l
1330-20-7 Xylene (total)49.0 0.50 0.16 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 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
20 of 49
LA7693433.5
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-5
Lab Sample ID:LA76934-5 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 95%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
21 of 49
LA7693433.5
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-6
Lab Sample ID:LA76934-6 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0140790.D 50 03/02/22 19:48 NN n/a n/a V2K3054
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 2000 500 62 ug/l
71-43-2 Benzene 2770 25 14 ug/l
108-86-1 Bromobenzene ND 25 9.1 ug/l
74-97-5 Bromochloromethane ND 25 6.1 ug/l
75-27-4 Bromodichloromethane ND 25 9.0 ug/l
75-25-2 Bromoform ND 25 5.0 ug/l
104-51-8 n-Butylbenzene ND 25 4.6 ug/l
135-98-8 sec-Butylbenzene ND 25 7.1 ug/l
98-06-6 tert-Butylbenzene ND 25 7.9 ug/l
56-23-5 Carbon Tetrachloride ND 10 4.6 ug/l
108-90-7 Chlorobenzene ND 25 8.2 ug/l
75-00-3 Chloroethane ND 25 2.8 ug/l
67-66-3 Chloroform ND 25 4.7 ug/l
95-49-8 o-Chlorotoluene ND 25 8.2 ug/l
106-43-4 p-Chlorotoluene ND 25 10 ug/l
124-48-1 Dibromochloromethane ND 10 3.7 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 25 6.4 ug/l
106-93-4 1,2-Dibromoethane ND 25 12 ug/l
75-71-8 Dichlorodifluoromethane ND 25 6.1 ug/l
541-73-1 m-Dichlorobenzene ND 25 3.2 ug/l
95-50-1 o-Dichlorobenzene ND 25 9.8 ug/l
106-46-7 p-Dichlorobenzene ND 25 11 ug/l
75-34-3 1,1-Dichloroethane ND 25 5.2 ug/l
107-06-2 1,2-Dichloroethane 94.5 10 6.1 ug/l
75-35-4 1,1-Dichloroethylene ND 25 4.7 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 25 5.5 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 25 7.7 ug/l
78-87-5 1,2-Dichloropropane ND 15 6.3 ug/l
142-28-9 1,3-Dichloropropane ND 25 10 ug/l
594-20-7 2,2-Dichloropropane ND 25 4.0 ug/l
563-58-6 1,1-Dichloropropene ND 25 5.8 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 10 5.1 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
22 of 49
LA7693433.6
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-6
Lab Sample ID:LA76934-6 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
VOA Special List
CAS No.Compound Result RL MDL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 10 2.8 ug/l
108-20-3 Di-Isopropyl Ether 31.2 25 3.7 ug/l
64-17-5 Ethyl Alcohol ND 2500 420 ug/l
100-41-4 Ethylbenzene 1020 25 10 ug/l
591-78-6 2-Hexanone 671 50 21 ug/l
87-68-3 Hexachlorobutadiene ND 10 5.5 ug/l
98-82-8 Isopropylbenzene 51.9 25 6.6 ug/l
99-87-6 p-Isopropyltoluene ND 25 6.5 ug/l
74-83-9 Methyl Bromide ND 25 11 ug/l
74-87-3 Methyl Chloride ND 25 3.3 ug/l
74-95-3 Methylene Bromide ND 25 5.7 ug/l
75-09-2 Methylene Chloride ND 25 4.0 ug/l
78-93-3 Methyl Ethyl Ketone ND 1300 14 ug/l
108-10-1 4-Methyl-2-pentanone ND 25 12 ug/l
1634-04-4 Methyl Tert Butyl Ether 38.0 25 3.4 ug/l
91-20-3 Naphthalene 352 25 5.0 ug/l
103-65-1 n-Propylbenzene 55.7 25 11 ug/l
100-42-5 Styrene 46.0 25 6.3 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 25 9.2 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 10 6.2 ug/l
127-18-4 Tetrachloroethylene ND 25 11 ug/l
108-88-3 Toluene 1180 25 15 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 25 8.0 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 25 8.5 ug/l
71-55-6 1,1,1-Trichloroethane ND 25 8.2 ug/l
79-00-5 1,1,2-Trichloroethane ND 15 8.7 ug/l
79-01-6 Trichloroethylene ND 25 9.0 ug/l
75-69-4 Trichlorofluoromethane ND 25 3.7 ug/l
96-18-4 1,2,3-Trichloropropane ND 25 1.1 ug/l
95-63-6 1,2,4-Trimethylbenzene 625 25 7.3 ug/l
108-67-8 1,3,5-Trimethylbenzene 178 25 8.1 ug/l
108-05-4 Vinyl Acetate ND 25 3.4 ug/l
75-01-4 Vinyl Chloride ND 5.0 3.8 ug/l
m,p-Xylene 2850 50 17 ug/l
95-47-6 o-Xylene 1450 25 7.4 ug/l
1330-20-7 Xylene (total)4290 25 8.1 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 91%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
23 of 49
LA7693433.6
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-6
Lab Sample ID:LA76934-6 Date Sampled:02/16/22
Matrix:AQ - Ground Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 97%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
24 of 49
LA7693433.6
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:FIELD BLANK
Lab Sample ID:LA76934-7 Date Sampled:02/16/22
Matrix:AQ - Field Blank Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0140788.D 1 03/02/22 18:48 NN n/a n/a V2K3054
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 4.5 10 1.2 ug/l J
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
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
25 of 49
LA7693433.7
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:FIELD BLANK
Lab Sample ID:LA76934-7 Date Sampled:02/16/22
Matrix:AQ - Field Blank Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, 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 0.57 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 0.24 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 0.44 0.50 0.29 ug/l J
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)0.17 0.50 0.16 ug/l J
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 93%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
26 of 49
LA7693433.7
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:FIELD BLANK
Lab Sample ID:LA76934-7 Date Sampled:02/16/22
Matrix:AQ - Field Blank Water Date Received:02/18/22
Method:SM 6200B Percent Solids:n/a
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 95%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
27 of 49
LA7693433.7
SGS North America Inc.
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
• Chain of Custody
Scott, LA
Section 4
28 of 49
LA769344
LA76934: Chain of Custody
Page 1 of 2
29 of 49
LA7693444.1
LA76934: Chain of Custody
Page 2 of 2
30 of 49
LA7693444.1
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
31 of 49
LA769345
Method Blank Summary Page 1 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3053-MB1 2K0140753.D 1 03/02/22 NN n/a n/a V2K3053
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-2, LA76934-3, LA76934-4, LA76934-5
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone 3.7 10 1.2 ug/l J
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
32 of 49
LA7693455.1.1
Method Blank Summary Page 2 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3053-MB1 2K0140753.D 1 03/02/22 NN n/a n/a V2K3053
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-2, LA76934-3, LA76934-4, LA76934-5
CAS No.Compound Result RL MDL Units Q
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene 0.15 0.20 0.11 ug/l J
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 0.23 0.50 0.16 ug/l J
120-82-1 1,2,4-Trichlorobenzene 0.21 0.50 0.17 ug/l J
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
33 of 49
LA7693455.1.1
Method Blank Summary Page 3 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3053-MB1 2K0140753.D 1 03/02/22 NN n/a n/a V2K3053
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-2, LA76934-3, LA76934-4, LA76934-5
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 98%70-130%
2037-26-5 Toluene-D8 98%70-130%
460-00-4 4-Bromofluorobenzene 96%70-130%
CAS No.Tentatively Identified Compounds R.T.Est. Conc.Units Q
Total TIC, Volatile 0 ug/l
34 of 49
LA7693455.1.1
Method Blank Summary Page 1 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3054-MB1 2K0140778.D 1 03/02/22 NN n/a n/a V2K3054
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-1, LA76934-6, LA76934-7
CAS No.Compound Result RL MDL Units Q
67-64-1 Acetone 3.1 10 1.2 ug/l J
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
35 of 49
LA7693455.1.2
Method Blank Summary Page 2 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3054-MB1 2K0140778.D 1 03/02/22 NN n/a n/a V2K3054
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-1, LA76934-6, LA76934-7
CAS No.Compound Result RL MDL Units Q
591-78-6 2-Hexanone ND 1.0 0.42 ug/l
87-68-3 Hexachlorobutadiene 0.16 0.20 0.11 ug/l J
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 0.17 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 0.22 0.50 0.16 ug/l J
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
36 of 49
LA7693455.1.2
Method Blank Summary Page 3 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3054-MB1 2K0140778.D 1 03/02/22 NN n/a n/a V2K3054
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-1, LA76934-6, LA76934-7
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 98%70-130%
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 96%70-130%
37 of 49
LA7693455.1.2
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3053-BS1 2K0140750.D 1 03/01/22 NN n/a n/a V2K3053
V2K3053-BSD1 2K0140751.D 1 03/02/22 NN n/a n/a V2K3053
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-2, LA76934-3, LA76934-4, LA76934-5
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
67-64-1 Acetone 50 59.9 120 55.1 110 8 70-130/30
71-43-2 Benzene 20 20.0 100 21.1 106 5 70-130/30
108-86-1 Bromobenzene 20 20.3 102 20.8 104 2 70-130/30
74-97-5 Bromochloromethane 20 20.4 102 20.5 103 0 70-130/30
75-27-4 Bromodichloromethane 20 21.6 108 22.5 113 4 70-130/30
75-25-2 Bromoform 20 19.0 95 19.0 95 0 70-130/30
104-51-8 n-Butylbenzene 20 21.1 106 21.8 109 3 70-130/30
135-98-8 sec-Butylbenzene 20 21.1 106 21.9 110 4 70-130/30
98-06-6 tert-Butylbenzene 20 21.4 107 21.7 109 1 70-130/30
56-23-5 Carbon Tetrachloride 20 21.2 106 22.2 111 5 70-130/30
108-90-7 Chlorobenzene 20 20.6 103 21.3 107 3 70-130/30
75-00-3 Chloroethane 20 19.2 96 19.7 99 3 60-140/30
67-66-3 Chloroform 20 18.8 94 19.9 100 6 70-130/30
95-49-8 o-Chlorotoluene 20 20.6 103 21.4 107 4 70-130/30
106-43-4 p-Chlorotoluene 20 20.4 102 21.1 106 3 70-130/30
124-48-1 Dibromochloromethane 20 18.9 95 19.6 98 4 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 24.0 120 24.4 122 2 70-130/30
106-93-4 1,2-Dibromoethane 20 20.5 103 21.6 108 5 70-130/30
75-71-8 Dichlorodifluoromethane 20 21.0 105 22.9 115 9 60-140/30
541-73-1 m-Dichlorobenzene 20 19.7 99 20.3 102 3 70-130/30
95-50-1 o-Dichlorobenzene 20 20.5 103 21.0 105 2 70-130/30
106-46-7 p-Dichlorobenzene 20 19.4 97 20.0 100 3 70-130/30
75-34-3 1,1-Dichloroethane 20 19.8 99 21.0 105 6 70-130/30
107-06-2 1,2-Dichloroethane 20 20.0 100 19.9 100 1 70-130/30
75-35-4 1,1-Dichloroethylene 20 19.9 100 21.2 106 6 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 19.1 96 20.4 102 7 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 20.2 101 21.0 105 4 70-130/30
78-87-5 1,2-Dichloropropane 20 20.3 102 21.5 108 6 70-130/30
142-28-9 1,3-Dichloropropane 20 21.2 106 21.4 107 1 70-130/30
594-20-7 2,2-Dichloropropane 20 17.8 89 18.4 92 3 70-130/30
563-58-6 1,1-Dichloropropene 20 19.9 100 21.0 105 5 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 22.7 114 23.3 117 3 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 19.3 97 19.3 97 0 70-130/30
108-20-3 Di-Isopropyl Ether 20 20.9 105 21.8 109 4 70-130/30
64-17-5 Ethyl Alcohol 400 334 84 474 119 35* a 70-130/30
100-41-4 Ethylbenzene 20 20.1 101 21.3 107 6 70-130/30
* = Outside of Control Limits.
38 of 49
LA7693455.2.1
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3053-BS1 2K0140750.D 1 03/01/22 NN n/a n/a V2K3053
V2K3053-BSD1 2K0140751.D 1 03/02/22 NN n/a n/a V2K3053
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-2, LA76934-3, LA76934-4, LA76934-5
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
591-78-6 2-Hexanone 50 43.1 86 39.8 80 8 70-130/30
87-68-3 Hexachlorobutadiene 20 19.0 95 19.2 96 1 70-130/30
98-82-8 Isopropylbenzene 20 21.5 108 22.5 113 5 70-130/30
99-87-6 p-Isopropyltoluene 20 21.4 107 22.4 112 5 70-130/30
74-83-9 Methyl Bromide 20 21.1 106 22.2 111 5 60-140/30
74-87-3 Methyl Chloride 20 20.4 102 21.4 107 5 60-140/30
74-95-3 Methylene Bromide 20 19.1 96 20.1 101 5 70-130/30
75-09-2 Methylene Chloride 20 19.3 97 19.5 98 1 70-130/30
78-93-3 Methyl Ethyl Ketone 50 48.5 97 52.0 104 7 70-130/30
108-10-1 4-Methyl-2-pentanone 50 57.7 115 60.0 120 4 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 21.2 106 21.6 108 2 70-130/30
91-20-3 Naphthalene 20 23.1 116 22.6 113 2 70-130/30
103-65-1 n-Propylbenzene 20 21.0 105 22.0 110 5 70-130/30
100-42-5 Styrene 20 22.8 114 23.7 119 4 70-130/30
630-20-6 1,1,1,2-Tetrachloroethane 20 22.2 111 23.1 116 4 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 20.2 101 20.4 102 1 70-130/30
127-18-4 Tetrachloroethylene 20 19.6 98 20.9 105 6 70-130/30
108-88-3 Toluene 20 20.2 101 20.8 104 3 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 20.6 103 21.0 105 2 70-130/30
120-82-1 1,2,4-Trichlorobenzene 20 20.0 100 20.3 102 1 70-130/30
71-55-6 1,1,1-Trichloroethane 20 20.6 103 21.3 107 3 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 20.1 101 21.2 106 5 70-130/30
75-69-4 Trichlorofluoromethane 20 20.2 101 21.3 107 5 60-140/30
96-18-4 1,2,3-Trichloropropane 20 21.2 106 21.1 106 0 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 21.4 107 22.1 111 3 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 21.4 107 22.1 111 3 70-130/30
108-05-4 Vinyl Acetate 20 19.4 97 19.4 97 0 70-130/30
75-01-4 Vinyl Chloride 20 20.9 105 22.4 112 7 60-140/30
m,p-Xylene 40 41.5 104 42.4 106 2 70-130/30
95-47-6 o-Xylene 20 20.9 105 22.0 110 5 70-130/30
1330-20-7 Xylene (total)60 62.4 104 64.4 107 3 70-130/30
* = Outside of Control Limits.
39 of 49
LA7693455.2.1
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3053-BS1 2K0140750.D 1 03/01/22 NN n/a n/a V2K3053
V2K3053-BSD1 2K0140751.D 1 03/02/22 NN n/a n/a V2K3053
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-2, LA76934-3, LA76934-4, LA76934-5
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 93%95%70-130%
2037-26-5 Toluene-D8 101%100%70-130%
460-00-4 4-Bromofluorobenzene 100%100%70-130%
(a) Outside control limits biased high. Analyte not detected in associated samples.
* = Outside of Control Limits.
40 of 49
LA7693455.2.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3054-BS1 2K0140775.D 1 03/02/22 NN n/a n/a V2K3054
V2K3054-BSD1 2K0140776.D 1 03/02/22 NN n/a n/a V2K3054
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-1, LA76934-6, LA76934-7
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
67-64-1 Acetone 50 54.7 109 51.7 103 6 70-130/30
71-43-2 Benzene 20 20.6 103 20.2 101 2 70-130/30
108-86-1 Bromobenzene 20 20.6 103 20.2 101 2 70-130/30
74-97-5 Bromochloromethane 20 20.9 105 20.5 103 2 70-130/30
75-27-4 Bromodichloromethane 20 22.2 111 21.7 109 2 70-130/30
75-25-2 Bromoform 20 18.3 92 18.2 91 1 70-130/30
104-51-8 n-Butylbenzene 20 20.3 102 20.3 102 0 70-130/30
135-98-8 sec-Butylbenzene 20 20.6 103 20.8 104 1 70-130/30
98-06-6 tert-Butylbenzene 20 21.2 106 21.3 107 0 70-130/30
56-23-5 Carbon Tetrachloride 20 21.5 108 20.9 105 3 70-130/30
108-90-7 Chlorobenzene 20 21.6 108 21.0 105 3 70-130/30
75-00-3 Chloroethane 20 19.9 100 18.8 94 6 60-140/30
67-66-3 Chloroform 20 19.7 99 18.9 95 4 70-130/30
95-49-8 o-Chlorotoluene 20 20.9 105 20.8 104 0 70-130/30
106-43-4 p-Chlorotoluene 20 20.5 103 20.3 102 1 70-130/30
124-48-1 Dibromochloromethane 20 19.3 97 18.7 94 3 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 21.7 109 23.4 117 8 70-130/30
106-93-4 1,2-Dibromoethane 20 21.5 108 22.0 110 2 70-130/30
75-71-8 Dichlorodifluoromethane 20 20.5 103 19.7 99 4 60-140/30
541-73-1 m-Dichlorobenzene 20 19.7 99 19.9 100 1 70-130/30
95-50-1 o-Dichlorobenzene 20 20.6 103 20.3 102 1 70-130/30
106-46-7 p-Dichlorobenzene 20 19.2 96 19.3 97 1 70-130/30
75-34-3 1,1-Dichloroethane 20 20.8 104 20.5 103 1 70-130/30
107-06-2 1,2-Dichloroethane 20 20.3 102 20.0 100 1 70-130/30
75-35-4 1,1-Dichloroethylene 20 21.2 106 20.4 102 4 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 19.9 100 19.4 97 3 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 20.6 103 20.0 100 3 70-130/30
78-87-5 1,2-Dichloropropane 20 20.8 104 21.0 105 1 70-130/30
142-28-9 1,3-Dichloropropane 20 22.0 110 22.1 111 0 70-130/30
594-20-7 2,2-Dichloropropane 20 16.6 83 15.7 79 6 70-130/30
563-58-6 1,1-Dichloropropene 20 20.3 102 20.2 101 0 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 23.0 115 22.5 113 2 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 19.5 98 19.4 97 1 70-130/30
108-20-3 Di-Isopropyl Ether 20 21.4 107 21.1 106 1 70-130/30
64-17-5 Ethyl Alcohol 400 390 98 412 103 5 70-130/30
100-41-4 Ethylbenzene 20 21.1 106 21.0 105 0 70-130/30
* = Outside of Control Limits.
41 of 49
LA7693455.2.2
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3054-BS1 2K0140775.D 1 03/02/22 NN n/a n/a V2K3054
V2K3054-BSD1 2K0140776.D 1 03/02/22 NN n/a n/a V2K3054
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-1, LA76934-6, LA76934-7
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
591-78-6 2-Hexanone 50 36.4 73 49.1 98 30 70-130/30
87-68-3 Hexachlorobutadiene 20 16.8 84 17.0 85 1 70-130/30
98-82-8 Isopropylbenzene 20 22.2 111 21.9 110 1 70-130/30
99-87-6 p-Isopropyltoluene 20 21.1 106 21.2 106 0 70-130/30
74-83-9 Methyl Bromide 20 22.1 111 21.0 105 5 60-140/30
74-87-3 Methyl Chloride 20 20.2 101 19.7 99 3 60-140/30
74-95-3 Methylene Bromide 20 19.8 99 19.7 99 1 70-130/30
75-09-2 Methylene Chloride 20 20.3 102 19.5 98 4 70-130/30
78-93-3 Methyl Ethyl Ketone 50 45.8 92 45.8 92 0 70-130/30
108-10-1 4-Methyl-2-pentanone 50 53.2 106 58.4 117 9 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 21.0 105 21.0 105 0 70-130/30
91-20-3 Naphthalene 20 21.2 106 21.7 109 2 70-130/30
103-65-1 n-Propylbenzene 20 21.0 105 21.1 106 0 70-130/30
100-42-5 Styrene 20 23.8 119 23.3 117 2 70-130/30
630-20-6 1,1,1,2-Tetrachloroethane 20 22.9 115 22.3 112 3 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 19.9 100 20.3 102 2 70-130/30
127-18-4 Tetrachloroethylene 20 20.1 101 20.2 101 0 70-130/30
108-88-3 Toluene 20 21.0 105 20.8 104 1 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 18.9 95 19.1 96 1 70-130/30
120-82-1 1,2,4-Trichlorobenzene 20 18.9 95 18.7 94 1 70-130/30
71-55-6 1,1,1-Trichloroethane 20 20.9 105 20.2 101 3 70-130/30
79-00-5 1,1,2-Trichloroethane 20 21.6 108 21.2 106 2 70-130/30
79-01-6 Trichloroethylene 20 20.4 102 20.7 104 1 70-130/30
75-69-4 Trichlorofluoromethane 20 20.9 105 20.1 101 4 60-140/30
96-18-4 1,2,3-Trichloropropane 20 21.9 110 22.4 112 2 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 21.5 108 21.3 107 1 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 21.4 107 21.4 107 0 70-130/30
108-05-4 Vinyl Acetate 20 20.0 100 18.9 95 6 70-130/30
75-01-4 Vinyl Chloride 20 21.6 108 21.4 107 1 60-140/30
m,p-Xylene 40 43.5 109 43.1 108 1 70-130/30
95-47-6 o-Xylene 20 22.0 110 21.6 108 2 70-130/30
1330-20-7 Xylene (total)60 65.5 109 64.7 108 1 70-130/30
* = Outside of Control Limits.
42 of 49
LA7693455.2.2
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K3054-BS1 2K0140775.D 1 03/02/22 NN n/a n/a V2K3054
V2K3054-BSD1 2K0140776.D 1 03/02/22 NN n/a n/a V2K3054
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-1, LA76934-6, LA76934-7
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 94%93%70-130%
2037-26-5 Toluene-D8 98%99%70-130%
460-00-4 4-Bromofluorobenzene 104%103%70-130%
* = Outside of Control Limits.
43 of 49
LA7693455.2.2
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA76912-7MS 2K0140770.D 200 03/02/22 NN n/a n/a V2K3053
LA76912-7MSD 2K0140771.D 200 03/02/22 NN n/a n/a V2K3053
LA76912-7 2K0140768.D 1 03/02/22 NN n/a n/a V2K3053
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-2, LA76934-3, LA76934-4, LA76934-5
LA76912-7 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 267 E 10000 8810 85 10000 9360 91 6 70-130/20
71-43-2 Benzene ND 4000 3740 94 4000 3870 97 3 70-130/20
108-86-1 Bromobenzene ND 4000 3840 96 4000 3850 96 0 70-130/20
74-97-5 Bromochloromethane ND 4000 3770 94 4000 3950 99 5 70-130/20
75-27-4 Bromodichloromethane ND 4000 4110 103 4000 4140 104 1 70-130/20
75-25-2 Bromoform ND 4000 3500 88 4000 3270 82 7 70-130/20
104-51-8 n-Butylbenzene ND 4000 3920 98 4000 3870 97 1 70-130/20
135-98-8 sec-Butylbenzene ND 4000 4080 102 4000 4070 102 0 70-130/20
98-06-6 tert-Butylbenzene ND 4000 4160 104 4000 4130 103 1 70-130/20
56-23-5 Carbon Tetrachloride ND 4000 4100 103 4000 4230 106 3 70-130/20
108-90-7 Chlorobenzene 0.21 4000 4020 100 4000 4050 101 1 70-130/20
75-00-3 Chloroethane ND 4000 3590 90 4000 3810 95 6 60-140/20
67-66-3 Chloroform 0.12 4000 3540 88 4000 3770 94 6 70-130/20
95-49-8 o-Chlorotoluene ND 4000 3980 100 4000 4000 100 1 70-130/20
106-43-4 p-Chlorotoluene ND 4000 4030 101 4000 4010 100 0 70-130/20
124-48-1 Dibromochloromethane ND 4000 3620 91 4000 3680 92 2 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 4000 4400 110 4000 4270 107 3 70-130/20
106-93-4 1,2-Dibromoethane ND 4000 3990 100 4000 3860 97 3 70-130/20
75-71-8 Dichlorodifluoromethane ND 4000 3870 97 4000 4150 104 7 60-140/20
541-73-1 m-Dichlorobenzene ND 4000 3810 95 4000 3810 95 0 70-130/20
95-50-1 o-Dichlorobenzene ND 4000 3980 100 4000 3920 98 2 70-130/20
106-46-7 p-Dichlorobenzene ND 4000 3780 95 4000 3710 93 2 70-130/20
75-34-3 1,1-Dichloroethane ND 4000 3840 96 4000 4110 103 7 70-130/20
107-06-2 1,2-Dichloroethane ND 4000 3800 95 4000 3740 94 2 70-130/20
75-35-4 1,1-Dichloroethylene ND 4000 3830 96 4000 4060 102 6 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 4000 3700 93 4000 3870 97 4 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 4000 3780 95 4000 4060 102 7 70-130/20
78-87-5 1,2-Dichloropropane ND 4000 3860 97 4000 3960 99 3 70-130/20
142-28-9 1,3-Dichloropropane ND 4000 4140 104 4000 4110 103 1 70-130/20
594-20-7 2,2-Dichloropropane ND 4000 2890 72 4000 3020 76 4 70-130/20
563-58-6 1,1-Dichloropropene ND 4000 3770 94 4000 3960 99 5 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 4000 4140 104 4000 4070 102 2 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 4000 3430 86 4000 3560 89 4 70-130/20
108-20-3 Di-Isopropyl Ether ND 4000 3920 98 4000 4120 103 5 70-130/20
64-17-5 Ethyl Alcohol ND 80000 60300 75 80000 83400 104 32* a 70-130/20
100-41-4 Ethylbenzene ND 4000 3990 100 4000 4090 102 2 70-130/20
* = Outside of Control Limits.
44 of 49
LA7693455.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA76912-7MS 2K0140770.D 200 03/02/22 NN n/a n/a V2K3053
LA76912-7MSD 2K0140771.D 200 03/02/22 NN n/a n/a V2K3053
LA76912-7 2K0140768.D 1 03/02/22 NN n/a n/a V2K3053
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-2, LA76934-3, LA76934-4, LA76934-5
LA76912-7 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 10000 6790 68* a 10000 6340 63* a 7 70-130/20
87-68-3 Hexachlorobutadiene ND 4000 3140 79 4000 3130 78 0 70-130/20
98-82-8 Isopropylbenzene ND 4000 4180 105 4000 4280 107 2 70-130/20
99-87-6 p-Isopropyltoluene 2.6 4000 4090 102 4000 4090 102 0 70-130/20
74-83-9 Methyl Bromide ND 4000 3770 94 4000 4110 103 9 60-140/20
74-87-3 Methyl Chloride 0.21 4000 3700 92 4000 3940 98 6 60-140/20
74-95-3 Methylene Bromide ND 4000 3560 89 4000 3560 89 0 70-130/20
75-09-2 Methylene Chloride 0.42 4000 3650 91 4000 3980 99 9 70-130/20
78-93-3 Methyl Ethyl Ketone 10.5 10000 8480 85 10000 8290 83 2 70-130/20
108-10-1 4-Methyl-2-pentanone 4.3 10000 10300 103 10000 10400 104 1 70-130/20
1634-04-4 Methyl Tert Butyl Ether 0.096 4000 3900 97 4000 4040 101 4 70-130/20
91-20-3 Naphthalene 0.44 4000 4030 101 4000 3970 99 2 70-130/20
103-65-1 n-Propylbenzene ND 4000 4140 104 4000 4020 101 3 70-130/20
100-42-5 Styrene ND 4000 4410 110 4000 4430 111 0 70-130/20
630-20-6 1,1,1,2-Tetrachloroethane ND 4000 4300 108 4000 4330 108 1 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 4000 4070 102 4000 3810 95 7 70-130/20
127-18-4 Tetrachloroethylene ND 4000 3760 94 4000 3830 96 2 70-130/20
108-88-3 Toluene 0.32 4000 3970 99 4000 4020 100 1 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 4000 3590 90 4000 3490 87 3 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 4000 3540 89 4000 3560 89 1 70-130/20
71-55-6 1,1,1-Trichloroethane ND 4000 3910 98 4000 4100 103 5 70-130/20
79-00-5 1,1,2-Trichloroethane ND 4000 4090 102 4000 4080 102 0 70-130/20
79-01-6 Trichloroethylene ND 4000 3760 94 4000 3840 96 2 70-130/20
75-69-4 Trichlorofluoromethane ND 4000 3820 96 4000 4040 101 6 60-140/20
96-18-4 1,2,3-Trichloropropane ND 4000 4220 106 4000 4090 102 3 70-130/20
95-63-6 1,2,4-Trimethylbenzene ND 4000 4180 105 4000 4130 103 1 70-130/20
108-67-8 1,3,5-Trimethylbenzene ND 4000 4190 105 4000 4160 104 1 70-130/20
108-05-4 Vinyl Acetate ND 4000 3720 93 4000 3710 93 0 70-130/20
75-01-4 Vinyl Chloride 0.080 4000 3900 97 4000 4230 106 8 60-140/20
m,p-Xylene ND 8000 8180 102 8000 8300 104 1 70-130/20
95-47-6 o-Xylene ND 4000 4130 103 4000 4180 105 1 70-130/20
1330-20-7 Xylene (total)0.32 12000 12300 102 12000 12500 104 2 70-130/20
* = Outside of Control Limits.
45 of 49
LA7693455.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA76912-7MS 2K0140770.D 200 03/02/22 NN n/a n/a V2K3053
LA76912-7MSD 2K0140771.D 200 03/02/22 NN n/a n/a V2K3053
LA76912-7 2K0140768.D 1 03/02/22 NN n/a n/a V2K3053
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-2, LA76934-3, LA76934-4, LA76934-5
CAS No.Surrogate Recoveries MS MSD LA76912-7 Limits
17060-07-0 1,2-Dichloroethane-D4 89%97%101%70-130%
2037-26-5 Toluene-D8 100%99%98%70-130%
460-00-4 4-Bromofluorobenzene 99%103%99%70-130%
(a) Outside control limits due to matrix interference.
* = Outside of Control Limits.
46 of 49
LA7693455.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA76992-13MS 2K0140794.D 200 03/02/22 NN n/a n/a V2K3054
LA76992-13MSD 2K0140795.D 200 03/02/22 NN n/a n/a V2K3054
LA76992-13 a 2K0140793.D 200 03/02/22 NN n/a n/a V2K3054
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-1, LA76934-6, LA76934-7
LA76992-13 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 610 J 10000 8760 82 10000 7360 68*17 70-130/20
71-43-2 Benzene 7350 4000 7710 9*4000 7590 6*2 70-130/20
108-86-1 Bromobenzene ND 4000 4100 103 4000 4050 101 1 70-130/20
74-97-5 Bromochloromethane ND 4000 4120 103 4000 4040 101 2 70-130/20
75-27-4 Bromodichloromethane ND 4000 4270 107 4000 4180 105 2 70-130/20
75-25-2 Bromoform ND 4000 3340 84 4000 3450 86 3 70-130/20
104-51-8 n-Butylbenzene 175 4000 3930 94 4000 3990 95 2 70-130/20
135-98-8 sec-Butylbenzene 62.0 J 4000 4070 100 4000 4120 101 1 70-130/20
98-06-6 tert-Butylbenzene ND 4000 4190 105 4000 4220 106 1 70-130/20
56-23-5 Carbon Tetrachloride ND 4000 4150 104 4000 4280 107 3 70-130/20
108-90-7 Chlorobenzene ND 4000 4220 106 4000 4120 103 2 70-130/20
75-00-3 Chloroethane ND 4000 3910 98 4000 3810 95 3 60-140/20
67-66-3 Chloroform ND 4000 3820 96 4000 3850 96 1 70-130/20
95-49-8 o-Chlorotoluene ND 4000 4090 102 4000 4100 103 0 70-130/20
106-43-4 p-Chlorotoluene ND 4000 4020 101 4000 4050 101 1 70-130/20
124-48-1 Dibromochloromethane ND 4000 3740 94 4000 3680 92 2 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 4000 4360 109 4000 4430 111 2 70-130/20
106-93-4 1,2-Dibromoethane ND 4000 4420 111 4000 4260 107 4 70-130/20
75-71-8 Dichlorodifluoromethane ND 4000 4140 104 4000 4150 104 0 60-140/20
541-73-1 m-Dichlorobenzene ND 4000 3840 96 4000 3880 97 1 70-130/20
95-50-1 o-Dichlorobenzene ND 4000 4040 101 4000 4020 101 0 70-130/20
106-46-7 p-Dichlorobenzene ND 4000 3790 95 4000 3760 94 1 70-130/20
75-34-3 1,1-Dichloroethane ND 4000 4180 105 4000 4220 106 1 70-130/20
107-06-2 1,2-Dichloroethane ND 4000 4080 102 4000 3920 98 4 70-130/20
75-35-4 1,1-Dichloroethylene ND 4000 4080 102 4000 4020 101 1 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 4000 4020 101 4000 4030 101 0 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 4000 4100 103 4000 4090 102 0 70-130/20
78-87-5 1,2-Dichloropropane ND 4000 4200 105 4000 4060 102 3 70-130/20
142-28-9 1,3-Dichloropropane ND 4000 4450 111 4000 4330 108 3 70-130/20
594-20-7 2,2-Dichloropropane ND 4000 2800 70 4000 2840 71 1 70-130/20
563-58-6 1,1-Dichloropropene ND 4000 4050 101 4000 4130 103 2 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 4000 4350 109 4000 4220 106 3 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 4000 3570 89 4000 3540 89 1 70-130/20
108-20-3 Di-Isopropyl Ether ND 4000 4260 107 4000 4340 109 2 70-130/20
64-17-5 Ethyl Alcohol ND 80000 55200 69*80000 66500 83 19 70-130/20
100-41-4 Ethylbenzene 2850 4000 5360 63*4000 5280 61*2 70-130/20
* = Outside of Control Limits.
47 of 49
LA7693455.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA76992-13MS 2K0140794.D 200 03/02/22 NN n/a n/a V2K3054
LA76992-13MSD 2K0140795.D 200 03/02/22 NN n/a n/a V2K3054
LA76992-13 a 2K0140793.D 200 03/02/22 NN n/a n/a V2K3054
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-1, LA76934-6, LA76934-7
LA76992-13 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 10000 7260 73 10000 7040 70 3 70-130/20
87-68-3 Hexachlorobutadiene ND 4000 3130 78 4000 3140 79 0 70-130/20
98-82-8 Isopropylbenzene 155 4000 4440 107 4000 4370 105 2 70-130/20
99-87-6 p-Isopropyltoluene 51.9 J 4000 4170 103 4000 4190 103 0 70-130/20
74-83-9 Methyl Bromide ND 4000 3950 99 4000 4060 102 3 60-140/20
74-87-3 Methyl Chloride ND 4000 4070 102 4000 4080 102 0 60-140/20
74-95-3 Methylene Bromide ND 4000 4050 101 4000 3820 96 6 70-130/20
75-09-2 Methylene Chloride ND 4000 4000 100 4000 3890 97 3 70-130/20
78-93-3 Methyl Ethyl Ketone ND 10000 8810 88 10000 8890 89 1 70-130/20
108-10-1 4-Methyl-2-pentanone ND 10000 11100 111 10000 10500 105 6 70-130/20
1634-04-4 Methyl Tert Butyl Ether ND 4000 4280 107 4000 4320 108 1 70-130/20
91-20-3 Naphthalene 1680 4000 4900 81 4000 4910 81 0 70-130/20
103-65-1 n-Propylbenzene 521 4000 4240 93 4000 4290 94 1 70-130/20
100-42-5 Styrene ND 4000 4660 117 4000 4560 114 2 70-130/20
630-20-6 1,1,1,2-Tetrachloroethane ND 4000 4500 113 4000 4440 111 1 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 4000 4000 100 4000 3980 100 1 70-130/20
127-18-4 Tetrachloroethylene ND 4000 3930 98 4000 3960 99 1 70-130/20
108-88-3 Toluene 26600 E 4000 16900 -243* b 4000 16600 -250* b 2 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 4000 3740 94 4000 3780 95 1 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 4000 3670 92 4000 3730 93 2 70-130/20
71-55-6 1,1,1-Trichloroethane ND 4000 4150 104 4000 4170 104 0 70-130/20
79-00-5 1,1,2-Trichloroethane ND 4000 4280 107 4000 4210 105 2 70-130/20
79-01-6 Trichloroethylene ND 4000 4160 104 4000 3960 99 5 70-130/20
75-69-4 Trichlorofluoromethane ND 4000 3970 99 4000 3970 99 0 60-140/20
96-18-4 1,2,3-Trichloropropane 121 4000 4270 104 4000 4150 101 3 70-130/20
95-63-6 1,2,4-Trimethylbenzene 5240 4000 5840 15*4000 5860 16*0 70-130/20
108-67-8 1,3,5-Trimethylbenzene 1500 4000 4660 79 4000 4660 79 0 70-130/20
108-05-4 Vinyl Acetate ND 4000 3970 99 4000 3930 98 1 70-130/20
75-01-4 Vinyl Chloride ND 4000 4160 104 4000 4260 107 2 60-140/20
m,p-Xylene 10700 8000 13000 29*8000 12800 26*2 70-130/20
95-47-6 o-Xylene 5410 4000 6710 33*4000 6540 28*3 70-130/20
1330-20-7 Xylene (total)16100 12000 19700 30*12000 19300 27*2 70-130/20
* = Outside of Control Limits.
48 of 49
LA7693455.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:LA76934
Account:ATCNCR Atlas
Project:Baux Mountain 76, 4801 Rural Hall Rd, Winston-Salem, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA76992-13MS 2K0140794.D 200 03/02/22 NN n/a n/a V2K3054
LA76992-13MSD 2K0140795.D 200 03/02/22 NN n/a n/a V2K3054
LA76992-13 a 2K0140793.D 200 03/02/22 NN n/a n/a V2K3054
The QC reported here applies to the following samples:Method: SM 6200B
LA76934-1, LA76934-6, LA76934-7
CAS No.Surrogate Recoveries MS MSD LA76992-13 Limits
17060-07-0 1,2-Dichloroethane-D4 94%97%99%70-130%
2037-26-5 Toluene-D8 101%100%94%70-130%
460-00-4 4-Bromofluorobenzene 103%102%99%70-130%
(a) Sample used for QC purposes only.
(b) Outside control limits due to high level in sample relative to spike amount.
* = Outside of Control Limits.
49 of 49
LA7693455.3.2