WS-8525_37896_CA_MRP_20210614

3502 Hayes Road • Monroe, North Carolina 28110
113 West Firetower Road, Suite G • Winterville, North Carolina 28590
Phone [phone] • [phone] • Fax [phone]

June 14, 2021

Mr. Gene Mao
NCDEQ-UST Section
Winston-Salem Regional Office
450 W. Hanes Mill Road
Suite 300
Winston-Salem, NC 27105

Re: Ground Water Monitoring Report
April 2021
Twin Roads Mobil
1011 Liberty Road
High Point, Guilford County
North Carolina
Facility ID Number: 0-00-000019265
Incident Number: 37896
GRI Project No: 3035

Dear Mr. Mao,

Please find enclosed the referenced report for the above mentioned site.
If you have any questions, please contact Rae Brown at 704-845-4010.

Sincerely,
Geological Resources, Inc.

Leslie Maxtone-Graham
Administrative Assistant

Enclosure

Cc: Mr. Harold Kennedy; Rex Oil Company, file

3502 Hayes Road • Monroe, North Carolina 28110
113 West Firetower Road, Suite G • Winterville, North Carolina 28590
Phone [phone] • [phone] • Fax [phone]
Ground Water Monitoring Report
April 2021
Twin Roads Mobil
1011 Liberty Road
Highpoint, Guilford County
North Carolina
Facility ID Number: 0-00-0000019265
Incident Number: 37896
GRI Project Number: 3035

Prepared for:

Rex Oil Company
1000 Lexington Avenue
Thomasville, North Carolina 27360

June 15, 2021

Rae Troiano Brown, P.G.
Project Manager
Rohit Shetty
Engineer

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
i
SITE INFORMATION
1. Site Identification
 Twin Roads Mobil (Facility ID 0-00-0000019265)
 Incident Number 37896 – High Risk (H260D)
 Location of Source Area: 1011 Liberty Road
Highpoint, NC 28314
Guilford County
35.923273°N, 79.947829°W (Topographical Map)

2. Information about Contacts Associated with the Leaking UST System

UST Owner (RP)
Rex Oil Company
1000 Lexington Avenue
Thomasville, NC 27360
[e-mail]
336-472-3000

UST Operator
Twin Roads Food Mart LLC
1010 Shamrock Road
High Point, NC 27265
Email Unknown
336-431-3812

Property Owner
Linda Terrell
1010 Shamrock Road
High Point, NC 27265
Email Unknown
336-431-3812

Property Occupant
Twin Roads Food Mart LLC
1010 Shamrock Road
High Point, NC 27265
Email Unknown
336-431-3812

Consultant/Contractor
Geological Resources, Inc.
3502 Hayes Road
Monroe, NC 28110
[e-mail]
704-845-4010

Analytical Laboratory
SGS North America, Inc.
4405 Vineland Road Suit C-15
Orlando, FL 32811
State Certification No. 573
407-425-6700
3. Information about Release
 Release was discovered in March 2011.
 An unknown amount of product was released from the leaking UST System.
 One 4,000-gallon gasoline and one 8,000-gallon gasoline USTs are in use at the site. One 2,000-
gallon gasoline and two 4,000-gallon gasoline USTs were removed on October 20, 2011.
___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
ii
EXECUTIVE SUMMARY
Twin Roads Mobil is located at 1011 Liberty Road in High Point, Guilford County, North Carolina. The
site is owned and operated by Twin Roads Food Mart LLC as a petroleum retail facility. One 4,000-
gallon gasoline and one 8,000-gallon gasoline USTs are in use at the site.
On October 20, 2011, one 2,000-gallon and two 4,000-gallon gasoline USTs were removed from the site.
On March 9, 2012, a Phase II Limited Site Assessment Report was submitted that confirmed the presence
of a release. The adjoining properties are a mixture of single-family residential, farming, and commercial
properties. According to the receptor survey activities conducted in 2011, 36 water supply wells were
identified within approximately 1,500 feet of the source area. Of the 36 water supply wells identified, one
potable well is located within 250 feet of the source area. Public water is not available to all surrounding
properties within a 1,500-foot radius of the site.
On March 17, 2017, GRI submitted a CAP that proposed the installation of an air sparge and soil vapor
extraction remediation system. As of the date of this report the CAP has not be approved for
implementation. Since submission of the CAP, the NCDEQ has revised its procedures for approval of
remediation systems which now require a stepwise procedure that includes 3 phases: feasibility study,
design and specification, and record of decision. The NCDEQ is treating the 2017 CAP as having satisfied
the feasibility study step and part of the design and remediation step.
On April 6, 2021, thirteen Type II monitoring wells (MW-1 through MW-13), one telescoping well (DW-1),
two recovery wells (RW-1 and RW-2), three observation wells (OW-1 through OW-3), and one air sparging
well (AS-1) were gauged, purged, and/or sampled. Monitoring well MW-14 could not be located; free
product was measured in monitoring wells MW-3 (2.48 feet), MW-10 (0.07 feet), and MW-11 (2.13 feet);
therefore, no ground water samples were collected from these wells. The Maximum Allowable
Concentrations (MACs) were below the concentrations of individual contaminant concentrations reported
in the ground water samples collected from MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, DW-1, RW-1,
RW-2, OW-1, OW-2, OW-3, and AS-1. The Gross Contaminant Level (GCL) was below the reported
concentration of benzene in RW-1.
On April 6, 2021, pre-GAC (WSW-1/D-1) and post-GAC (WSW-1/D-2) samples were collected from water
supply well WSW-1. The MAC was below the concentrations of MTBE reported in the pre-GAC sample
WSW-1/D-1. No detectable contaminant concentrations were reported in the post-GAC sample WSW-
1/D-2.
Contaminant mass calculations were completed for the April 2021 groundwater sampling event. Since
2016, contaminant mass has decreased 13% at the site.
Prior to completion of the design and remediation step of the CAP process, the contaminant plume must
be defined vertically and horizontally to allow for reconfiguration of the air sparge system. The on-site
deep well (DW-1) is screened from 50-55 feet below ground surface (BGS) and has detectable contaminant

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
iii
concentrations that exceed the MACs; therefore, a deeper well should be installed adjacent to DW-1 to
80 feet BGS because the off-site potable well (WSW-1) pump is installed to 80 feet BGS and has
contaminant impact. The horizontal extent of contamination at for the depth ranging from 50-55 feet
BGS also needs to be defined; therefore, two additional wells should be installed. After a comprehensive
ground water sampling event, the final remediation system configuration will be proposed and will include
cleanup milestones, estimated costs, and projected cleanup time frame.

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
TABLE OF CONTENTS
SITE INFORMATION ............................................................................................................................ i
EXECUTIVE SUMMARY ....................................................................................................................... ii
1.0 SITE HISTORY AND CHARACTERIZATION ...................................................................................1
2.0 PRESENTATION OF CURRENT SITE ASSESSMENT INFORMATION/ COMPARISON TO HISTORICAL
ASSESSMENT INFORMATION ...................................................................................................2
3.0 FREE PRODUCT REMOVAL ........................................................................................................5
4.0 NATURAL ATTENUATION / NATURAL SOURCE ZONE DEPLETION STATUS ..................................6
5.0 Historical Information..............................................................................................................6
6.0 CONCLUSIONS .........................................................................................................................6
7.0 LIMITATIONS ...........................................................................................................................7
8.0 STATEMENTS AND CERTIFICATION ...........................................................................................7

FIGURES
Figure 1: Site Location Map
Figure 2: Site Vicinity Map
Figure 3: Site Map
Figure 4: Water Table Surface Map
Figure 5: Ground Water Quality Map
Figure 6A: Benzene Isoconcentration Map
Figure 6B: Toluene Isoconcentration Map
Figure 6C: Ethylbenzene Isoconcentration Map
Figure 6D: Xylenes Isoconcentration Map
Figure 6E: MTBE Isoconcentration Map
Figure 6F: Naphthalene Isoconcentration Map
Figure 7: Estimated Contaminant Mass Area Map
Figure 8: Soil Boring Location Map
Figure 9A: Cross-section A-A’
Figure 9B: Cross-section B-B’
Figure 10: Proposed Well Location Map

TABLES
Table 1: UST Owner and Operator Information
Table 2: UST System Information
Table 3: Adjacent Property Owner Information
Table 4: Water Supply Well Information
Table 5: Well Construction and Gauging Information
Table 6: Summary of Ground Water Sample Analytical Results
Table 7: Free Product Recovery Information
Table 8: Summary of Soil Sample Results

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035

APPENDICES
Appendix A: State Correspondence
Appendix B: Well Construction Logs
Appendix C: Laboratory Analytical Report
Appendix D: Contaminant Mass Reduction Calculations

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
1
1.0 SITE HISTORY AND CHARACTERIZATION
GRI presents the results of the April 2021 ground water sampling event at the Twin Roads Mobil site,
located at 1011 Liberty Road in Highpoint, Guilford County, North Carolina (Figures 1 and 2). These
activities were conducted in accordance with GRI Proposal No. 21-124, which was submitted to the
NCDEQ on February 18, 2021, and was approved as Task Authorization No. 37896-31 on February 25,
2021. State correspondence has been included as Appendix A.

Twin Roads Food Mart, LLC currently owns and operates the site as a petroleum retail facility. One 8,000-
gallon gasoline UST and one 4,000-gallon UST are in use at the site.

On October 20, 2011, one 2,000-gallon UST and two 4,000-gallon gasoline USTs were removed from the
site. On March 9, 2012, a Phase II Limited Site Assessment Report was submitted that confirmed the
presence of a release. UST owner/operator information and UST system information are included as
Tables 1 and 2, respectively.

The site and surrounding area are a mixture of single-family residential, farming, and commercial
properties. The site contains one building and is primarily capped with cement and asphalt. The overall
topography at the site is relatively flat. A livestock pond is located approximately 350 feet to the
east/northeast of the subject site. Fourteen Type II monitoring wells (MW-1 through MW-14), one Type
III monitoring well (DW-1), two recovery wells (RW-1 and RW-2), three observation wells (OW-1 through
OW-3), and one air sparging well (AS-1) have been installed at the site. A Site Map showing the locations
of the monitoring wells and the structures on-site has been included as Figure 3.

In 2011, GRI personnel conducted a receptor survey at the site. Thirty-six water supply wells (WSW-1
through WSW-3, WSW-5 through WSW-26 and WSW-28 through WSW-38) were identified within
approximately 1,500 feet of the source area. Of the supply wells identified, 19 potable water supply wells
(WSW-1, WSW-2, WSW-5 through WSW-10, WSW-16 through WSW-19, WSW-25, WSW-26, WSW-28
through WSW-30, WSW-33, and WSW-34) were identified within a 1,000-foot radius of the subject site.
One potable water supply well (WSW-1) is located within 250 feet of the source area. Municipal water is
only available to some of the properties within 1,000-feet of the site. Adjacent property owner
information and water supply well information are presented in Tables 3 and 4, respectively. A Site
Vicinity Map showing the location of the water supply wells has been included as Figure 2.

In 2005, the potable well for the residence at 1605 Fairfield Road (WSW-1) was installed to 120 feet BGS.
The lithology reported during installation was sand/rock from 0 to 40 feet BGS, underlain by rock from 40
to 120 feet BGS. Water production zones were identified from 58 feet to 75 BGS. WSW-1 is cased to 50
feet BGS and the pump was installed to 80 feet BGS. At the time of installation, static water level was
reported at 30 feet BGS. During site assessment activities being conducted at the Twin Roads Mobil site,
contaminant concentrations that exceeded the MACs were reported in WSW-1. Therefore, in April 2013,
a GAC unit was installed on WSW-1. Since 2013, ground water samples collected prior to GAC unit have

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
2
reported contaminant concentrations exceeding the MACs. Samples collected post-GAC treatment, have
no detectable concentrations that exceed the MACs. Copies of WSW-1 well construction details are
included as Appendix B.

On February 25, 2016, GRI submitted a CAP that proposed the installation of an air sparge and soil vapor
extraction remediation system. Following the submission of the CAP, GRI was directed to determine if
the municipal water line could be extended down East Fairfield Road to connect to WSW-1. The extension
of the water line was determined to be unfeasible; therefore, a revised CAP detailing the efforts made to
extend the water line was submitted on March 17, 2017. Please note that this CAP has not received
approval from the NCDEQ as of the date of this report. Since submission of the CAP, the NCDEQ has
revised its procedures for approval of remediation systems which now include a stepwise procedure that
includes 3 phases: feasibility study, design and specification, and record of decision.

In November 2020, during a virtual conference, the NCDEQ and GRI discussed the 2017 CAP and its
delayed approval. The NCDEQ is treating the 2017 CAP as having satisfied the feasibility study step and
part of the design and remediation step. However, prior to approval of the design and remediation step,
additional information is required which includes: final system configuration, cleanup milestones,
expected cleanup time frame, and projected costs. Upon review of the most recent sampling data
(October 2019), it was noted that the contaminant plume has expanded and therefore DEQ requested an
updated a sampling event prior to additional well installation and revision of the CAP.
2.0 PRESENTATION OF CURRENT SITE ASSESSMENT INFORMATION/ COMPARISON TO HISTORICAL
ASSESSMENT INFORMATION
On April 6, 2021, thirteen Type II monitoring wells (MW-1 through MW-13), one telescoping well (DW-1),
two recovery wells (RW-1 and RW-2), three observation wells (OW-1 through OW-3), and one air sparging
well (AS-1) were gauged. Monitoring well MW-14 could not be located and therefore was not gauged or
sampled; please note, MW-14 has not been located since 2017. Free product was measured in monitoring
wells MW-3 (2.48 feet), MW-10 (0.07 feet), and MW-11 (2.13 feet). Depths to ground water in the Type II
monitoring wells ranged from 10.02 feet to 16.37 feet. Ground water elevations in the Type II monitoring
wells ranged from 80.01 feet to 88.59 feet. Ground water flow was generally to the northwest with a
horizontal gradient of approximately 0.04 feet per foot which is consistent with historical data. The
vertical gradient between paired wells MW-3 and DW-1 was approximately 0.02 feet per foot in the
upward direction. Well construction and gauging information is presented in Table 5. A Water Table
Surface Map based on the Type II monitoring wells is included as Figure 4. A summary of the current
ground water gauging data is shown below:

Well ID
Screened
Interval
(x to y ft.
BGS)
Bottom
of Well
(ft. BGS)
Top of
Casing
Elevation
(ft.)
Depth to
Water from
Top of Casing
(feet)
Free
Product
Thickness
(ft.)
Ground
Water
Elevation
(ft.)
MW-1 13 - 28 28 100.00 12.75 --- 87.25
MW-2 13 - 28 28 98.09 14.20 --- 83.89
MW-3 13 - 28 28 97.74 11.80 2.48 88.07

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
3
Well ID
Screened
Interval
(x to y ft.
BGS)
Bottom
of Well
(ft. BGS)
Top of
Casing
Elevation
(ft.)
Depth to
Water from
Top of Casing
(feet)
Free
Product
Thickness
(ft.)
Ground
Water
Elevation
(ft.)
MW-4 13 - 28 28 98.61 10.02 --- 88.59
MW-5 10 - 25 25 100.40 16.37 --- 84.03
MW-6 13 - 28 28 100.55 14.07 --- 86.48
MW-7 13 - 28 28 99.54 11.80 --- 87.74
MW-8 15 - 35 35 97.87 14.34 --- 83.53
MW-9 13 - 28 28 98.58 14.63 --- 83.95
MW-10 13 - 28 28 98.67 10.67 0.07 88.06
MW-11 15 - 35 35 97.70 13.28 2.13 86.25
MW-12 13 - 28 28 94.95 11.81 --- 83.14
MW-13 13 - 28 28 95.34 15.33 --- 80.01
DW-1 50 - 55 55 97.52 12.36 --- 85.16
RW-1 10 - 25 25 NA 10.80 --- NA
RW-2 8 - 23 23 NA 9.10 --- NA
OW-1 13 - 28 28 98.21 11.10 --- 87.11
OW-2 13 - 28 28 99.65 12.93 --- 86.72
OW-3 13 - 28 28 100.13 13.20 --- 86.93
AS-1 32 - 35 35 99.98 13.09 --- 86.89

On April 6, 2021, ten Type II monitoring wells (MW-1, MW-2, MW-4 through MW-9, MW-12, and MW-
13), one telescoping well (DW-1), two recovery wells (RW-1 and RW-2), three observation wells (OW-1
through OW-3), and one air sparging well (AS-1) were purged and sampled. Monitoring wells MW-3, MW-
10, and MW-11 were not sampled because free product was present. Ground water samples collected
from the monitoring wells were submitted for laboratory analyses using SM 6200B + oxygenates. The
MACs were below the concentrations of individual BTEX constituents, MTBE, naphthalene, tert-amyl
alcohol, tert-amyl methyl ether, tert-butyl alcohol, 1,2-dichloroethane, hexachlorobutadiene,
isopropylbenzene, di-isopropyl ether, n-propylbenzene, 1,2,4-trimethylbenzene, and/or 1,3,5-
trimethylbenzene reported in the ground water samples collected from MW-1, MW-2, MW-6, MW-7,
MW-8, MW-9, DW-1, RW-1, RW-2, OW-1, OW-2, OW-3, and AS-1. The GCL was below the reported
concentration of benzene in RW-1.

On April 6, 2021, pre-GAC (WSW-1/D-1) and post-GAC (WSW-1/D-2) samples were collected from WSW-
1 and submitted for laboratory analysis using EPA Method 602. Detectable concentrations of MTBE and
di-isopropyl ether were reported in the pre-GAC sample WSW-1/D-1. The MAC was below the
concentrations of MTBE reported in the pre-GAC sample WSW-1/D-1. No detectable contaminant
concentrations were reported in the post-GAC sample.

A summary of the analytical results for ground water samples collected on April 6, 2021 is presented in
Table 6. A Ground Water Quality Map based on the April 2021 data is included as Figure 5.
Isoconcentration maps for individual BTEX constituents, MTBE, and naphthalene are included as Figures
6A through 6F, respectively. A complete report of laboratory analyses of the ground water samples
collected from the monitoring wells during the April 2021 sampling event has been included as Appendix
C. A summary of the current ground water analytical data is shown below:

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
4

Contaminant
of Concern  Benzene Toluene Ethylbenzene Xylenes MTBE Naphthalene Well
ID
MACs (mg/l) 1 600 600 500 20 6
GCL (mg/l) 5,000 260,000 84,500 85,500 20,000 6,000
MW-1 520 <13 111 122 J 871 62.7
MW-2 8.2 J <6.3 611 827 <6.3 573
MW-3 FP FP FP FP FP FP
MW-4 <0.63 <0.63 <0.63 <1.3 <0.63 <0.63
MW-5 <0.31 <0.31 <0.31 <0.63 <0.31 <0.31
MW-6 <0.63 <0.63 <0.63 <1.3 55.4 <0.63
MW-7 122 113 49.3 112 <0.63 11.3
MW-8 13.9 <0.31 34.1 8.7 72.4 34.2
MW-9 <0.63 <0.63 <0.63 <1.3 <0.63 0.69 J
MW-10 FP FP FP FP FP FP
MW-11 FP FP FP FP FP FP
MW-12 <0.25 <0.25 <0.25 <0.50 <0.25 <0.25
MW-13 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13
DW-1 486 10.5 J 7.9 J <13 1,490 <6.3
RW-1 7,660 19,500 1,950 12,600 <63 784
RW-2 947 5,600 1,340 9,030 <25 596
OW-1 2,940 2,180 381 1,050 1,140 294
OW-2 405 36.4 383 157 <2.5 434
OW-3 3.0 <0.25 <0.25 <0.50 82.2 <0.25
AS-1 <31 <31 <31 <63 6,870 <31
WSW-1/D-1 <2.5 <2.5 <2.5 <5.0 620 <2.5
WSW-1/D-2 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13

The baseline contaminant mass at the site was determined based on the total BTEX, MTBE and
naphthalene concentrations from the July 2016 ground water sampling event as well as the maximum
historical water column height observed in each area. The contaminant plume was divided into three
areas (Areas 1 through 3) based on the July 2016 benzene concentrations. Overall, contaminant mass at
the site has decreased 13% since July 2016. Please note that calculated values represent a conservative
estimate of contaminant mass reductions because previously known concentrations were assumed for
wells containing free product. Contaminant mass reduction calculations have been included as Appendix
D. A map of the contaminant mass areas has been included as Figure 7. A chart depicting the overall
trend in contaminant mass is shown below:

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
5

The site is located in the Carolina Slate Belt of the Piedmont Physiographic Province region of North
Carolina. The aquifer water table has a seasonal high depth to water of approximately thirteen to twenty-
four feet BGS.

Please note that while MMPE events have been conducted, the full scope of the CAP has not been
implemented at the site; therefore, a baseline contaminant mass prior to CAP implementation and CAP
milestones have not been established at the site.

The NCDEQ considers the 2017 CAP to have satisfied the feasibility study step and part of the design and
remediation step. However, prior to approval of the design and remediation step, the contaminant plume
must be defined vertically and horizontally to allow for reconfiguration of the air sparge system. The on-
site deep well (DW-1) is screened from 50-55’ BGS and has detectable contaminant concentrations that
exceed the MACs; therefore, a deeper well should be installed adjacent to DW-1 to 80’ BGS because the
off-site potable well (WSW-1) pump is installed to 80 feet BGS and has contaminant impact. The
horizontal extent of contamination at depths ranging from 50-55’ BGS also needs to be defined; therefore,
two additional wells should be installed.
3.0 FREE PRODUCT REMOVAL
Historically, free product has been present in monitoring well MW-3, MW-10, MW-11, RW-1, and RW-2.
Since July 2013, four MMPE events have been conducted at the site to remove free product. In April 2021,
free product measured in MW-3 (2.48 feet), MW-10 (0.07 feet), and MW-11 (2.13 feet). Free product
recovery information is presented in Table 7.
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
Contaminant Mass (grams)Time
Total Contaminant Mass vs. Time
Twin Roads Mobil (Incident No. 37896)

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
6
4.0 NATURAL ATTENUATION / NATURAL SOURCE ZONE DEPLETION STATUS
MMPE events are being conducted at the site until a CAP can be implemented. The site is in the active
remediation phase, therefore, no natural attenuation monitoring plan is currently in place at the site.
5.0 HISTORICAL INFORMATION
In 2011, UST-1, UST-2, and UST-3 were removed and soil samples were collected. Over-excavation
activities were conducted during UST removal. In 2013, during Comprehensive Site Assessment activities,
additional soil samples were collected. Soil sample analytical results are shown on Table 8. Soil boring
locations are shown on Figure 8. Cross-sections of applicable excavation areas, monitoring and recovery
well locations, and soil boring locations are included as Figures 9A and 9B.

6.0 CONCLUSIONS AND RECOMENDATIONS
 On April 6, 2021, thirteen Type II monitoring wells (MW-1 through MW-13), one telescoping well
(DW-1), two recovery wells (RW-1 and RW-2), three observation wells (OW-1 through OW-3), and
one air sparging well (AS-1) were gauged, purged, and/or sampled. Monitoring well MW-14 could
not be located. Free product was measured in monitoring wells MW-3 (2.48 feet), MW-10 (0.07
feet), and MW-11 (2.13 feet).
 Depths to ground water in the Type II monitoring wells ranged from 10.02 feet to 16.37 feet.
Ground water elevations in the Type II monitoring wells ranged from 80.01 feet to 88.59 feet.
Ground water flow was generally to the northwest which is consistent with historical data.
 The MACs were below the concentrations of individual BTEX constituents, MTBE, naphthalene,
tert-amyl alcohol, tert-amyl methyl ether, tert-butyl alcohol, 1,2-dichloroethane,
hexachlorobutadiene, isopropylbenzene, di-isopropyl ether, n-propylbenzene, 1,2,4-
trimethylbenzene, and/or 1,3,5-trimethylbenzene reported in the ground water samples
collected from MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, DW-1, RW-1, RW-2, OW-1, OW-2,
OW-3, and AS-1. The GCL was below the reported concentration of benzene in RW-1.
 On April 6, 2021, pre-GAC (WSW-1/D-1) and post-GAC (WSW-1/D-2) samples were collected from
water supply well WSW-1. The MAC was below the concentrations of MTBE reported in pre-GAC
sample WSW-1/D-1. No detectable contaminant concentrations were reported in the post-GAC
sample.
 The NCDEQ considers the 2017 CAP to have satisfied the feasibility study step and part of the
design and remediation step.
 Prior to completion of the design and remediation step of the CAP process, the contaminant
plume must be defined vertically and horizontally to allow for reconfiguration of the air sparge
system. The on-site deep well (DW-1) is screened from 50-55 feet BGS and has detectable
contaminant concentrations that exceed the MACs; therefore, a deeper well should be installed
adjacent to DW-1 to 80 feet BGS because the off-site potable well (WSW-1) pump is installed to
80 feet BGS and has contaminant impact. The horizontal extent of contamination at depths
ranging from 50-55 feet also needs to be defined; therefore, two additional wells should be
installed. A map with the proposed well locations is shown as Figure 10.

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
7
 After a sampling event, the final remediation system configuration will be proposed and will
include cleanup milestones, estimated costs, and projected cleanup time frame.
7.0 LIMITATIONS
This report has been prepared for the exclusive use of Rex Oil Company for specific application to the
referenced site in Guilford County, North Carolina. The assessment was conducted based on the scope of
work and level of effort desired by the NCDEQ and with resources adequate only for that scope of work.
Our findings have been developed in accordance with generally accepted standards of environmental
practices in the State of North Carolina, available information, and our professional judgment. No other
warranty is expressed or implied.

The data that are presented in this report are indicative of conditions that existed at the precise locations
sampled and at the time the samples were collected. In addition, the data obtained from samples would
be interpreted as being meaningful with respect to parameters indicated in the laboratory report. No
additional information can logically be inferred from these data.
8.0 STATEMENTS AND CERTIFICATION
1 Enter the date the monitoring report was due. n/a Will this report be submitted after the
established due date?
YES NO
2 Was any required information from the above template missing from this report? YES NO
IF the answer to question #1 or# 2 is “YES”, please provide additional information in this cell to explain
what was missing and why.
3 If applicable, will any of the proposed attenuation milestones under the schedule approved
in the Corrective Action Plan not be met? (within a reasonable margin of error)
YES NO
IF the answer to question #3 is “NO”, skip to the certification under #8 below.
IF the answer to question #3 is “YES”, please generally describe in this cell the possible reason(s) and
outline proposed remedies. (This should be described in more detail in the report text above.)

N/A
4 Does any known or suspected source zone soil contamination or free product remain
outside of the assessed area that could be inhibiting natural attenuation?
YES NO
5 Has there been an unexpected increase in contaminant mass sufficient to suggest a
potential new release from a separate onsite or offsite source?
YES NO
IF the answer to either question #4 or #5 is “YES”, generally describe in this cell any actions
recommended to further assess or clean up this known or suspected source. (This should be described
in more detail in the report text above.)

___________________________________________________________________________________________
Prepared by: Geological Resources, Inc. Ground Water Monitoring Report
Prepared on: June 15, 2021 Twin Roads Mobil
Project Manager: Rae Troiano Brown, P.G. GRI Project No. 3035
8
6 Certification:
I, Rae Troiano Brown, a Licensed Geologist for Geological Resources, Inc., do certify that the information
contained in this report is correct and accurate to the best of my knowledge.

Geological Resources, Inc. is licensed to practice engineering and geology in North Carolina. The
certification number of the company or corporation is C-2727/C-127.

FIGURES
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"J"J"J
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"J
"J
"J
"J
"J"J"J"J
"J
"J
"J
"J
"J
"J
"J
"J
"J
"J
"J
"J
"J
"J
SITE0161861
WSW-9
WSW-8
WSW-7
WSW-6
WSW-5
WSW-3
WSW-2
WSW-1
WSW-38
WSW-37
WSW-36
WSW-35
WSW-34
WSW-33
WSW-32
WSW-31
WSW-30
WSW-29
WSW-28
WSW-26
WSW-25
WSW-24
WSW-23 WSW-22 WSW-21
WSW-19
WSW-18
WSW-17
WSW-16
WSW-15
WSW-14 WSW-13 WSW-12
WSW-11
WSW-10
0161803
016183901618060161841
0161854
0161836
0161968
0161971
0161849
0161811
0161810
0161840
0161842
0162012
0161844
0161947
016195001618120162044
0161946
016196901618130161970
0161945
0161943
0161973
0161942
0161845
0161972
0161822
0162014016184601618560161857
01620170162018
0161850
0162015
LIBERTY RD
I-85 FAIRFIELD RD
COE AVRAMP ALDRIDGE RDLONGVIEW DRSECHREST CIRBURTON RDMORRIS STJACKSON LAKE RDE S T H E R C T
PRI
VATE DRL
E
I
GH
T
ON
DR
B
R
I
GHT
O
N

V
I
L
L
A
GE

L
N
I-85 RA M P WSW-20
KERSEY VALLEY RDBR O O K D A LE D RLA
KE
VI
EW AV
FIGURE 2: SITE VICINITY MAPTWIN ROADS MOBIL1011 LIBERTY ROADHIGH POINT, GUILFORD COUNTYNORTH CAROLINAINCIDENT NO. 37896GRI PROJECT NO. 3035
PREPARED BY:GEOLOGICAL RESOURCES, INC.AUGUST 30, 2013
³
0 300150Feet1 inch = 300 feet
1,500-FOOT RADIUS250-FOOT RADIUS
1,000-FOOT RADIUS
NOTE:Based on Guilford County, NC GIS Website.
LEGEND
Pond
"J Water Supply Well
All_Streams_polyline
Guilford_Streets
Parcels_April_2011
0161850 REID Number
Text
0161718
0161718
0161719

TABLES
Revision Date: 01/29/2020
UST ID Number 1 - 3 Facility ID Number
Owner or Operator?
Owner
UST ID Number 1A and 1B Facility ID Number
Owner or Operator?
Operator
Incident Number 37896 Facility ID Number
Address Telephone Number
Post Office Box 1050, Thomasville, North Carolina 27360-1050 336-472-3000
0-00-0000019265
Name of Other Responsible Party
Rex Oil Company
Dates of Release(s)
10/20/2011
TABLE 1
UST OWNER/OPERATOR INFORMATION
TWIN ROADS REX (INCIDENT NO. 37896)
0-00-0000019265
Name of Owner or Operator Dates of Ownership / Operation
Facility ID #: 0-00-0000019265
Rex Oil Company 1980 - 2011
Address Telephone Number
PO Box 1050, Thomasville NC 27360-1050 336-472-3000
1010 Shamrock Road, High Point, NC 27265 336-431-3812
0-00-0000019265
Name of Owner or Operator Dates of Ownership / Operation
Twin Roads Food Mart LLC 2011 - present
Address Telephone Number
Page 1 of 1
Was Release
Associated
with UST
System?
(Yes / No)
1 Gasoline Gasoline 2,000 05/07/80 Steel 64" X 12' Steel
Removed
(10/18/11)Yes
2 Gasoline Gasoline 4,000 05/07/80 Steel 64" X 24' Steel
Removed
(10/20/11)Yes
3 Gasoline Gasoline 4,000 05/07/80 Steel 64" X 24' Steel
Removed
(10/20/11)Yes
1A Gasoline Gasoline 8,000 12/01/11 Double Wall 8' x 21'4" Double wall flex Active No
1B Gasoline Gasoline 4,000 12/01/11 Double Wall 64" X 24' Double wall flex Active No
*No ASTs were on site.
37896 Petroleum 10/20/2011
Incident
Number
Material
Released
Date of
Release Description of Release
The release of petroleum was discovered during UST closure activities.
Tank
Dimensions
Description
of
Associated
Product Piping
and
Pumps
Status
of
UST
TABLE 2
UST SYSTEM INFORMATION
TWIN ROADS REX (INCIDENT NO. 37896)
Date: 01/29/2020 Facility ID # : 0-00-0000019265
UST
ID
No.
Current
or Most
Recent
Contents
Previous
Contents
Capacity
(gallons)
Date
Installed
Construction
Details
Page 1 of 1
Date: 02/06/2018 Facility ID # : 0-00-0000019265
0161850
(Site)
0161844
0161718
0161719
0161950
0161842
0161846
Note:
• Properties are keyed to Figure 2.
• The most recent receptor survey was conducted on July 1, 2011.
TABLE 3
ADJACENT PROPERTY OWNER INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
REID No. Owner/ Occupant Name Address
TERRELL, LINDA A. 1010 SHAMROCK ROAD, HIGH POINT, NC 27265
PHYSICAL : 1011 LIBERTY RD, HIGH POINT NC 27265
TERRELL, LINDA A. 1010 SHAMROCK ROAD, HIGH POINT, NC 27265
PHYSICAL : 1007 LIBERTY RD, HIGH POINT NC 27265
CECIL, E. RAY 6879 DRESDEN ROAD, HIGH POINT, NC 27263
PHYSICAL: 1114 LIBERTY ROAD, HIGH POINT 27265
SMITH, CHRISTINA T. P.O.BOX 654 ORISKANY, NY 13424
PHYSICAL: 1601 E FAIRFIELD ROAD, HIGH POINT NC 27263
HUFF, THOMAS 1119 LIBERTY ROAD, HIGH POINT NC 27263
PHYSICAL: 1113 LIBERTY RD, HIGH POINT, 27265
McCULLOUGH, MITZIE 1008 LIBERTY ROAD, ARCHDALE, NC 27263
RASHID, KHALID 1605 E FAIRFIELD ROAD, HIGH POINT, NC 27263
Page 1 of 1
Well ID.REID No.
Parcel ID No.Well Owner Owner Physical
Well Use
(Potable/Agricultural,
etc.)
Well
Depth
(ft. BGS)
Distance from
source area of
release
(ft.)
WSW-1 0161842 RASHID, KHALID
1605 E. FAIRFIELD RD
HIGH POINT, NC 27263
1605 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~170' N
WSW-2 0161846 SMITH, CHRISTINA T. 1601 E. FAIRFIELD RD
HIGH POINT, NC 27263
1601 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~310' NW
WSW-3 0161950 McCULLOUGH, MITZIE
1008 LIBERTY RD
HIGH POINT, NC 27263
1008 LIBERTY RD
HIGH POINT, NC 27263 NOT USED Unknown ~280' SW
POND 0161719 HUFF, THOMAS
1119 LIBERTY RD
HIGH POINT, NC 27263
1113 LIBERTY RD
HIGH POINT, NC 27263 LIVSTK. SURF POND Unknown ~420' ENE
WSW-5 0161841 YATES, SHAUN M.
13174 LAKESHORE GROVE DR
WINTER GARDEN, FL 34787
1603 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~540' N
WSW-6 0161840 CAVIN, DERRY L. J. AND NANCY 1531 E. FAIRFIELD RD
HIGH POINT, NC 27263
1531 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~470' NW
WSW-7 0161822 FIELDS, BRENDA
8303 HARLOW RD
ARCHDALE, NC 27263
1535 E. FAIRFIELD RD
HIGH POINT NC 27263 POTABLE Unknown ~815' NW
WSW-8 0161803 SHEETS, DAVID R.
1537 E. FAIRFIELD RD
HIGH POINT, NC 27263
1537 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~900' NNW
WSW-9 0161806 HARDISON, JOHN T.
1529 E. FAIRFIELD RD
HIGH POINT, NC 27263
1529 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~630' NW
WSW-10 0161839 PETERS, ANGELA & KEVIN
4004 STONEBROOK FARMS RD
GREENSBORO, NC 27403
1525 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~870' NW
WSW-11 0161810 GOMEZ, FIDEL DANIEL
1513 E. FAIRFIELD RD
HIGH POINT, NC 27263
1513 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~1,050' NW
WSW-12 0161811
NC CONFERENCE OF WESLEYAN
METHODIST CHURCH
601 N. ROTARY DR
HIGH POINT, NC 27262
1505 E FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~1,280' NW
WSW-13 0161812
NC CONFERENCE OF WESLEYAN
METHODIST CHURCH
601 N. ROTARY DR
HIGH POINT, NC 27262
1503 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~1,380' WNW
WSW-14 0161813 SHEPHERD, MARTHA
595 FORTSON RD
ATHENS, GA 30606
1501 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~1,460' WNW
WSW-15 0161845 BRADHAM, CHERYL & RICKIE LEE
1530 E. FAIRFIELD RD
HIGH POINT, NC 27263
1530 E. FAIRFIELD RD
HIGH POINT, NC 27263 UNVERIFIED Unknown ~340' WNW
TABLE 4
WATER SUPPLY WELL INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Date : 02/06/2018 Facility ID #: 0-00-0000019265
Page 1 of 3
Well ID.REID No.
Parcel ID No.Well Owner Owner Physical
Well Use
(Potable/Agricultural,
etc.)
Well
Depth
(ft. BGS)
Distance from
source area of
release
(ft.)
TABLE 4
WATER SUPPLY WELL INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Date : 02/06/2018 Facility ID #: 0-00-0000019265
WSW-16 0161836 TAYLOR, BUDDY L/T
1528 E. FAIRFIELD RD
HIGH POINT, NC 27263
1528 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE 265' ~475' WNW
WSW-17 0161849 PERRY, JOHN A.
1524 E. FAIRFIELD RD
HIGH POINT, NC 27263
1524 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~680' WNW
WSW-18 0161856 RAHMAN, ATIQ U.
1520 E. FAIRFIELD RD
HIGH POINT, NC 27263
1520 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~825' WNW
WSW-19 0162012 ULLAH, AHSAN AND FARZANA
1506 E. FAIRFIELD RD
HIGH POINT, NC 27263
1516 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~940' WNW
WSW-20 0162014 OCMAND, JEFFREY
1512 E. FAIRFIELD RD
HIGH POINT, NC 27263
1512 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~1,030' WNW
WSW-21 0162015 WHIPPLE, THOMAS
1510 E. FAIRFIELD ROAD
HIGH POINT, NC 27263
1510 E. FAIRFIELD ROAD
HIGH POINT, NC 27263 POTABLE Unknown ~1,100' WNW
WSW-22 0162017 ULLAH, AHSAN
1506 E. FAIRFIELD RD
HIGH POINT, NC 27263
1506 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~1,215' WNW
WSW-23 0162018
AML IRREVOCABLE TRUST
SECHREST, SHERRY, TRUSTEE
P.O.BOX 4009
ARCHDALE, NC 27263
1502 E. FAIRFIELD RD
HIGH POINT, NC 27263 POTABLE Unknown ~1,315' WNW
WSW-24 0161857 VIGIL, MOISES VENTURA
941 LIBERTY RD
HIGH POINT, NC 27263
941 LIBERTY RD
HIGH POINT, NC 27263 UNVERIFID Unknown ~450' W
WSW-25 0161854 PROCTOR, BRENDA BREWER
4404 TRAILWOOD DR
GREENSBORO, NC 27407
935 LIBERTY ROAD
HIGH POINT, NC 27263 POTABLE Unknown ~650' W
WSW-26 0162044 DILLON, THOMAS MARK
921 LIBERTY RD
HIGH POINT, NC 27263
931 LIBERTY RD
HIGH POINT, NC 27263 POTABLE Unknown ~900' SW
WSW-28 0161947 HAWKS, FRANKLIN M.
3313 LONGVIEW DR
HIGH POINT, NC 27263
3313 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~730' SSW
WSW -29 0161946 ALLRED, DAVID L.
3317 LONGVIEW DR
ARCHDALE, NC 27263
3317 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~860' SSW
WSW-30 0161945 SHIVES, HAROLD
P.O. BOX 4272
HIGH POINT, NC 27263
3319 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~960' SSW
WSW-31 0161943 CARRILLO, JOSE
3325 LONGVIEW DR
HIGH POINT, NC 27263
3325 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~1,160' SSW
Page 2 of 3
Well ID.REID No.
Parcel ID No.Well Owner Owner Physical
Well Use
(Potable/Agricultural,
etc.)
Well
Depth
(ft. BGS)
Distance from
source area of
release
(ft.)
TABLE 4
WATER SUPPLY WELL INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Date : 02/06/2018 Facility ID #: 0-00-0000019265
WSW-32 0161942 WALL, STEPHEN A.
3327 LONGVIEW DR
HIGH POINT, NC 27263
3327 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~1,260' SSW
WSW-33 0161973
BENSON, ROBERT L JR; BENSON,
DIANNE C.
P.O. BOX 4393
ARCHDALE, NC 27263
3310 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~870' SSW
WSW-34 0161972
BOGGAN, BELINDA J/T R/S; GRADY,
CARLTON J/T R/S
3312 LONGVIEW DR
ARCHDALE, NC 27263
3312 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~920' SSW
WSW-35 0161971
ATKINSON, C. STEVEN; ATKINSON,
ELLEN W.
3316 LONGVIEW DR
ARCHDALE, NC 27263
3316 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~1,050' SSW
WSW-36 0161970
SKEEN, CHARLES R; SKEEN, JOYCE J;
HUFFMAN, BRENDA S; SKEEN,
MICHAEL RAY
6301 CHECKER RD
HIGH POINT, NC 27263
3320 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~1,160' SSW
WSW-37 0161969 RAFIQ, FARHAT
3324 LONGVIEW DR
ARCHDALE, NC 27263
3324 LONGVIEW DR
ARCHDALE, NC 27263 POTABLE Unknown ~1,240' SSW
WSW-38 0161968 HILL, JOHN C; HILL, SHIRLEY A.
3326 LONGVIEW DR
ARCHDALE, NC 27263
3326 LONGVIEW DR, ARCHDALE,
NC 27263 POTABLE Unknown ~1,390' SSW
• The most recent receptor survey was conducted on July 1, 2011.
• Water supply wells are keyed to Figure 2.
• ft. BGS: Feet below ground surface.
Note:
Page 3 of 3
Date: 04/28/2021
02/08/12 17.25 ---82.75
03/14/13 18.51 ---81.49
02/16/15 19.51 ---80.49
11/02/15 18.49 ---81.51
07/27/16 16.88 ---83.12
01/17/17 19.01 ---80.99
12/18/17 20.30 ---79.70
10/10/19 16.46 ---83.54
04/06/21 12.75 ---87.25
02/08/12 19.99 ---78.10
03/14/13 22.60 ---75.49
02/16/15 22.60 ---75.49
07/27/16 19.57 ---78.52
01/17/17 22.11 ---75.98
12/18/17 23.46 ---74.63
10/10/19 18.04 ---80.05
04/06/21 14.20 ---83.89
02/08/12 16.27 3.34 84.34
03/14/13 17.84 3.89 83.24
07/08/13 17.33 5.62 85.23 Before MMPE
07/12/13 20.55 ---77.19 After MMPE
08/09/13 14.17 0.41 83.92
03/24/14 14.85 2.60 85.12 Before MMPE
03/28/14 18.90 ---78.84 After MMPE
01/12/15 16.55 0.23 81.39 Before MMPE
01/16/15 19.69 ---78.05 After MMPE
02/16/15 15.89 1.05 82.75 FP measured in bailer
10/06/15 17.26 1.51 81.78 Before MMPE
10/10/15 21.01 ---76.73 After MMPE
07/27/16 14.65 0.35 83.39
01/17/17 16.39 0.37 81.67
12/18/17 18.49 1.09 80.19
10/10/19 13.21 0.30 84.79
04/06/21 11.80 2.48 88.07
02/08/12 14.57 ---84.04
03/14/13 15.26 ---83.35
07/08/13 13.78 ---84.83 Before MMPE
07/12/13 18.29 ---80.32 After MMPE
03/24/14 13.26 ---85.35 Before MMPE
03/28/14 17.05 ---81.56 After MMPE
01/12/15 16.93 ---81.68 Before MMPE
01/16/15 19.63 ---78.98 After MMPE
02/16/15 16.59 ---82.02
10/10/15 19.44 ---79.17 After MMPE
07/27/16 14.97 ---83.64
01/17/17 16.87 ---81.74
12/18/17 18.41 ---80.20
10/10/19 14.78 ---83.83
04/06/21 10.02 ---88.59
03/14/13 23.80 ---76.60
02/16/15 DRY ---DRY
07/27/16 21.67 ---78.73
01/17/17 24.27 ---76.13
12/18/17 24.59 ---75.81
10/10/19 20.08 ---80.32
04/06/21 16.37 ---84.03
03/14/13 16.48 ---84.07
02/16/15 20.23 ---80.32
07/27/16 17.53 ---83.02
01/17/17 19.72 ---80.83
12/18/17 21.01 ---79.54
10/10/19 16.83 ---83.72
04/06/21 14.07 ---86.48
TABLE 5
WELL CONSTRUCTION AND GAUGING INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Facility ID # : 0-00-0000019265
Well ID Date Installed
(mm/dd/yy)
Date Water
Level Measured
(mm/dd/yy)
Screened
Interval
(x to y ft.
BGS)
Bottom of
Well
(ft. BGS)
Top of Casing
Elevation*
(ft.)
Depth to Water
from Top of
Casing
(ft.)
Free Product
Thickness**
(ft.)
Groundwater
Elevation (ft.)Comments
97.742813-2802/07/12MW-3
MW-4 02/07/12 13-28 28 98.61
100.402510-25
100.002813-2802/07/12MW-1
MW-2 02/07/12 13-28 98.0928
02/26/13MW-5
100.552813-2802/26/13MW-6
Page 1 of 4
Date: 04/28/2021
TABLE 5
WELL CONSTRUCTION AND GAUGING INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Facility ID # : 0-00-0000019265
Well ID Date Installed
(mm/dd/yy)
Date Water
Level Measured
(mm/dd/yy)
Screened
Interval
(x to y ft.
BGS)
Bottom of
Well
(ft. BGS)
Top of Casing
Elevation*
(ft.)
Depth to Water
from Top of
Casing
(ft.)
Free Product
Thickness**
(ft.)
Groundwater
Elevation (ft.)Comments
03/14/13 17.33 ---82.21
07/08/13 15.53 ---84.01 Before MMPE
07/12/13 18.61 ---80.93 After MMPE
03/24/14 15.58 ---83.96 Before MMPE
03/28/14 18.15 ---81.39 After MMPE
01/12/15 18.66 ---80.88 Before MMPE
01/16/15 20.62 ---78.92 After MMPE
02/16/15 18.59 ---80.95
10/10/15 20.63 ---78.91 After MMPE
11/02/15 17.64 ---81.90
07/27/16 16.28 ---83.26
01/17/17 18.39 ---81.15
12/18/17 19.76 ---79.78
10/10/19 15.55 ---83.99
04/06/21 11.80 ---87.74
03/14/13 21.51 ---76.36
07/08/13 19.66 ---78.21 Before MMPE
07/12/13 19.62 ---78.25 After MMPE
03/24/14 18.85 ---79.02 Before MMPE
03/28/14 18.96 ---78.91 After MMPE
01/12/15 22.52 ---75.35 Before MMPE
01/16/15 22.62 ---75.25 After MMPE
02/16/15 22.37 ---75.50
10/10/15 22.31 ---75.56 After MMPE
07/27/16 19.70 ---78.17
01/17/17 22.00 ---75.87
12/18/17 23.43 ---74.44
10/10/19 18.57 ---79.30
04/06/21 14.34 ---83.53
03/14/13 22.05 ---76.53
02/16/15 23.11 ---75.47
07/27/16 20.03 ---78.55
01/17/17 22.61 ---75.97
12/18/17 23.93 ---74.65
10/10/19 23.42 ---75.16
04/06/21 14.63 ---83.95
03/14/13 18.10 3.10 83.23
07/08/13 15.80 2.21 84.77 Before MMPE
07/12/13 21.20 ---77.47 After MMPE
08/09/13 15.55 1.03 84.00
03/24/14 14.76 1.20 84.94 Before MMPE
03/28/14 19.42 ---79.25 After MMPE
01/12/15 19.03 2.18 81.51 Before MMPE
01/16/15 22.56 ---76.11 After MMPE
02/16/15 16.74 1.11 82.88 FP measured in bailer
10/06/15 17.96 1.20 81.74 Before MMPE
10/10/15 22.11 ---76.56 After MMPE
11/02/15 18.01 1.01 81.53
07/27/16 15.26 ---83.41
01/17/17 17.09 ---81.58
12/18/17 18.76 0.19 80.07
10/10/19 14.70 0.80 84.66
04/06/21 10.67 0.07 88.06
03/14/13 19.85 0.70 78.45
07/08/13 17.15 ---80.55 Before MMPE
07/12/13 18.88 ---78.82 After MMPE
08/09/13 17.09 0.03 80.64
03/24/14 15.39 0.13 82.42 Before MMPE
03/28/14 17.82 ---79.88 After MMPE
01/12/15 19.52 1.41 79.39 Before MMPE
01/16/15 21.02 ---76.68 After MMPE
02/16/15 19.71 0.40 78.33 FP measured in bailer
10/06/15 19.56 0.65 78.70 Before MMPE
10/10/15 22.11 ---75.59 After MMPE
07/27/16 17.19 0.23 80.71
01/17/17 19.42 0.21 78.46
12/18/17 22.34 1.63 76.76
10/10/19 15.56 1.10 83.08
04/06/21 13.28 2.13 86.25
98.582813-2802/28/13
97.873515-3503/01/13MW-8
MW-9
98.672813-2802/28/13MW-10
97.703515-35
99.542813-2802/28/13MW-7
03/01/13MW-11
Page 2 of 4
Date: 04/28/2021
TABLE 5
WELL CONSTRUCTION AND GAUGING INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Facility ID # : 0-00-0000019265
Well ID Date Installed
(mm/dd/yy)
Date Water
Level Measured
(mm/dd/yy)
Screened
Interval
(x to y ft.
BGS)
Bottom of
Well
(ft. BGS)
Top of Casing
Elevation*
(ft.)
Depth to Water
from Top of
Casing
(ft.)
Free Product
Thickness**
(ft.)
Groundwater
Elevation (ft.)Comments
03/14/13 18.15 ---76.80
02/16/15 19.17 ---75.78
07/27/16 18.27 ---76.68
01/17/17 19.46 ---75.49
12/18/17 21.36 ---73.59
10/10/19 17.71 ---77.24
04/06/21 11.81 ---83.14
03/14/13 21.66 ---73.68
02/16/15 22.64 ---72.70
07/27/16 21.10 ---74.24
01/17/17 22.70 ---72.64
12/18/17 24.28 ---71.06
10/10/19 20.16 ---75.18
04/06/21 15.33 ---80.01
08/01/13 17.46 ---83.35
02/16/15 19.07 ---81.74
07/27/16 17.72 ---83.09
01/17/17 19.52 ---81.29
12/18/17 21.03 ---79.78
10/10/19 ---------Not found
04/06/21 ---------Not found
03/14/13 17.84 ---79.68
02/16/15 18.32 ---79.20
07/27/16 16.72 ---80.80
01/17/17 18.83 ---78.69
12/18/17 20.28 ---77.24
10/10/19 20.07 ---77.45
04/06/21 12.36 ---85.16
03/24/14 14.08 ---NA
03/28/14 15.95 ---NA
01/12/15 17.10 0.02 NA
01/16/15 20.06 ---NA
02/16/15 17.18 0.70 NA FP measured in bailer
10/06/15 17.71 0.53 NA Before MMPE
10/10/15 22.14 ---NA After MMPE
11/02/15 17.53 0.03 NA
07/27/16 15.51 ---NA
01/17/17 17.33 ---NA
12/18/17 18.91 0.06 NA
10/10/19 14.99 ---NA
04/06/21 10.80 ---NA
03/24/14 13.65 1.20 NA
03/28/14 21.13 ---NA
01/12/15 16.64 ---NA
01/16/15 19.29 ---NA
02/16/15 16.50 0.05 NA FP measured in bailer
10/06/15 16.17 0.02 NA Before MMPE
10/10/15 22.20 ---NA After MMPE
07/27/16 13.90 ---NA
01/17/17 16.39 ---NA
12/18/17 17.71 0.07 NA
10/10/19 12.71 ---NA
04/06/21 9.10 ---NA
11/02/15 16.79 ---81.42
07/27/16 16.41 ---81.80
01/17/17 16.98 ---81.23
12/18/17 17.98 ---80.23
10/10/19 14.00 ---84.21
04/06/21 11.10 ---87.11
11/02/15 18.50 ---81.15
07/27/16 17.53 ---82.12
01/17/17 18.66 ---80.99
12/18/17 19.98 ---79.67
10/10/19 15.87 ---83.78
04/06/21 12.93 ---86.72
11/02/15 19.07 ---81.06
07/27/16 17.09 ---83.04
01/17/17 19.25 ---80.88
12/18/17 20.50 ---79.63
10/10/19 16.19 ---83.94
04/06/21 13.20 ---86.93
98.2128.013-2809/08/15OW-1
NA23.08-2303/04/14RW-2
95.342813-2803/04/13MW-13
100.81MW-14
97.525550-5502/28/13DW-1
NA25.010-2503/04/14RW-1
2813-2808/01/13
94.952813-2803/04/13MW-12
OW-2
100.1328.013-2809/08/15OW-3
99.6528.013-2809/08/15
Page 3 of 4
Date: 04/28/2021
TABLE 5
WELL CONSTRUCTION AND GAUGING INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Facility ID # : 0-00-0000019265
Well ID Date Installed
(mm/dd/yy)
Date Water
Level Measured
(mm/dd/yy)
Screened
Interval
(x to y ft.
BGS)
Bottom of
Well
(ft. BGS)
Top of Casing
Elevation*
(ft.)
Depth to Water
from Top of
Casing
(ft.)
Free Product
Thickness**
(ft.)
Groundwater
Elevation (ft.)Comments
11/02/15 19.29 ---80.69
07/27/16 17.21 ---82.77
01/17/17 18.38 ---81.60
12/18/17 20.58 ---79.40
10/10/19 16.58 ---83.40
04/06/21 13.09 ---86.89
Notes:
• * : Reference point for elevation measurements.
• Top of casing elevations based on an arbitrary benchmark of 100.00 feet.
• ft BGS : feet below ground surface.
• NA : Not Available
• ** : If free product is present in a well, ground water elevation calculated by: [Top of Casing Elevation - Depth to Water] + [free product thickness x 0.8581].
99.9835.032-3509/08/15AS-1
Page 4 of 4
Date: 04/22/21
Well ID
Date
Collected
(mm/dd/yy)
1 600 600 500 20 6 40 128 10 70 70 70 70 3 0.4 0.4 70 70 25 70 70 400 400
5,000 260,000 84,500 85,500 20,000 6,000 40,000 12,800 10,000 6,900 8,500 15,000 70,000 3,000 400 400 25,000 70,000 11,700 30,000 70,000 28,500 25,000
02/16/15 556 21.4 50.0 72.9 250 25.9 NR NR NR 1.0 1.8 2.1 <0.17 <0.16 174 <0.12 7.6 90.9 2 6.3 <0.13 31.2 17.1
11/02/15 6.4 <0.17 0.26 J <0.43 76.3 <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 21.4 <0.12 <0.12 15.5 <0.12 <0.16 <0.13 <0.14 <0.14
07/27/16 1,130 18.7 155 31.4 550 103 NR NR NR 2.6 3.3 3.1 <0.13 <0.20 203 8.7 J 20.8 108 1.8 19.9 <0.13 16.9 14.2
01/18/17 301 8.5 17.2 6.6 J 220 10.4 NR NR NR <1.3 <1.3 <1.3 <1.3 <2.0 67.4 <1.3 2.4 J 43.3 <1.3 2.3 J <1.3 <1.3 <1.3
12/18/17 158 4 10.9 8.1 410 6.4 NR NR NR 0.5 1.6 2.2 <0.13 <0.20 128 <0.13 3.3 84.0 0.27 J 1.3 <0.13 1.3 0.17 J
10/10/19 972 28 179 76.6 621 104 24,900 <10 2,580 <6.3 <6.3 <6.3 <6.3 <10 148 <6.3 14.4 J 101 <6.3 15.3 J <6.3 56.5 28.5
04/06/21 520 <13 111 122 J 871 62.7 27,600 <20 2,780 <13 <13 <13 <13 <20 <13 <13 <13 119 <13 14.1 J <13 79.9 44.9 J
02/16/15 15.6 2.1 110 124 <0.16 53.4 NR NR NR 4.3 7.3 4.0 <0.17 0.22 J 0.46 J <0.12 31.1 <0.16 3.6 26.5 <0.13 87.5 39
07/27/16 15.9 3.7 441 490 2.0 411 NR NR NR 10.6 9.1 4.6 <0.13 0.42 J 0.66 <0.13 52 <0.13 9.1 77.4 <0.13 500 162
01/18/17 17.5 4.9 108 105 <1.3 89.3 NR NR NR 4.7 7.6 4.1 <0.25 0.41 J 0.67 J <0.25 28.1 <0.25 3.8 23.5 <0.25 96.1 28.8
12/18/17 9.8 1.6 128 138 0.9 43.3 NR NR NR 4.3 7.5 4.1 <0.13 <0.20 0.42 J <0.13 29.9 <0.13 3.5 30.2 <0.13 137 50.9
10/10/19 12.2 J <3.1 581 661 <3.1 659 <50 <5.0 <50 13.4 10.7 J <3.1 <3.1 <5.0 <3.1 <3.1 61.5 <3.1 12.3 J 105 <3.1 989 339
04/06/21 8.2 J <6.3 611 827 <6.3 573 213 J <10 <100 9.4 J 9.0 J <6.3 <6.3 <10 <6.3 <6.3 53.5 <6.3 10.1 J 98 <6.3 1,110 340
02/08/12 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
03/14/13 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
02/16/15 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
07/27/16 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
01/18/17 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
12/18/17 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
10/22/19 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
04/06/21 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
02/16/15 <0.17 <0.17 <0.15 <0.43 0.24 J <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 <0.16 <0.12 <0.12 <0.16 <0.12 <0.16 <0.13 <0.14 <0.14
07/27/16 <0.13 <0.13 <0.13 <0.31 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
01/18/17 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
12/18/17 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 0.23 J <0.13
10/10/19 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 <2.0 <0.20 <2.0 <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
04/06/21 <0.63 <0.63 <0.63 <1.3 <0.63 <0.63 <10 <1.0 <10 <0.63 <0.63 <0.63 <0.63 <1.0 <0.63 <0.63 <0.63 <0.63 <0.63 <0.63 <0.63 <0.63 <0.63
07/27/16 <0.13 <0.13 <0.13 <0.31 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
10/10/19 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 <2.0 <0.20 <2.0 <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
04/06/21 <0.31 <0.31 <0.31 <0.63 <0.31 <0.31 <5.0 <0.50 <5.0 <0.31 <0.31 <0.31 <0.31 <0.50 <0.31 <0.31 <0.31 <0.31 <0.31 <0.31 <0.31 <0.31 <0.31
02/16/15 0.41 J <0.17 <0.15 <0.43 2.1 <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 2.2 <0.12 <0.12 2.6 1.0 <0.16 <0.13 <0.14 <0.14
07/27/16 <0.13 <0.13 <0.13 <0.31 0.97 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 2 <0.13 <0.13 3.7 <0.13 <0.13 <0.13 <0.13 <0.13
01/18/17 <0.13 <0.13 <0.13 <0.25 0.30 J <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 0.86 <0.13 <0.13 1.8 <0.13 <0.13 <0.13 <0.13 <0.13
12/18/17 0.30 J <0.13 0.16 J <0.25 1.9 2.1 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 2.1 <0.13 <0.13 2.8 <0.13 <0.13 <0.13 0.14 J <0.13
10/10/19 <0.13 <0.13 <0.13 <0.25 7.4 <0.13 10.2 <0.20 <2.0 <0.13 <0.13 <0.13 <0.13 <0.20 1.4 <0.13 <0.13 2.4 <0.13 <0.13 <0.13 <0.13 <0.13
04/06/21 <0.63 <0.63 <0.63 <1.3 55.4 <0.63 33.8 J <1.0 <10 <0.63 <0.63 <0.63 <0.63 <1.0 3.3 <0.63 <0.63 8.7 <0.63 <0.63 <0.63 <0.63 <0.63
02/16/15 5,360 1,570 702 931 1,100 154 NR NR NR <29 <28 <29 38.3 J <32 <33 <24 44.7 J 171 <24 96.1 J <26 182 45.6 J
11/02/15 589 124 39.0 120 89.5 20.3 NR NR NR 0.37 J 0.27 J <0.15 <0.17 <0.16 0.19 J <0.12 3.1 18.5 0.30 J 5.3 <0.13 25.7 6.6
07/27/16 6,730 4,340 1,500 3,250 1,300 287 NR NR NR <13 <13 <13 <13 <20 <13 <13 61.9 223 <13 176 <13 623 135
01/18/17 6,160 411 1,440 365 896 166 NR NR NR <25 <25 <25 38.4 J <40 <25 <25 44.8 J 175 <25 164 <25 88.4 J <25
12/18/17 10,700 1,870 823 1,240 2,990 436 NR NR NR <25 <25 <25 <25 <40 <25 <25 75.3 J 416 <25 155 <25 222 78.5 J
10/10/19 4,650 5,730 1,050 2,720 419 167 1,250 89.5 J <200 <13 <13 <13 <13 <20 <13 <13 47.8 J 122 <13 112 <13 361 81.2
04/06/21 122 113 49.3 112 <0.63 11.3 256 <1.0 <10 2.6 3.6 <0.63 <0.63 <1.0 <0.63 2.2 J 10.9 1.5 J 0.84 J 7.5 0.75 J 14.7 4.1
02/16/15 2.9 <0.17 10.2 4.1 310 2.2 NR NR NR 0.39 J 0.70 0.85 <0.17 <0.16 34.2 <0.12 2.9 59.5 0.54 2.9 <0.13 4.3 1.6
07/27/16 7.1 0.26 J 18.3 1.8 374 15.5 NR NR NR 1.6 2.4 1.5 <0.13 <0.20 34.3 <0.13 11.4 56.1 1.3 7.3 <0.13 2.5 1
01/18/17 3.5 0.22 J 22.6 2.7 401 4.8 NR NR NR 1.2 1.1 1.2 <0.13 <0.20 36.0 <0.13 4.8 57.9 0.95 7.4 <0.13 2.9 1.4
12/18/17 4.9 J <3.1 19.5 <6.3 1,060 10.2 J NR NR NR <3.1 <3.1 <3.1 <3.1 <5.0 43.1 <3.1 3.4 J 130 <3.1 4.8 J <3.1 <3.1 <3.1
10/10/19 8.1 J <3.1 45.6 <6.3 1,570 27.6 1,360 39.0 <50 <3.1 <3.1 <3.1 <3.1 <5.0 42.5 <3.1 5.2 J 179 <3.1 6.5 J <3.1 <3.1 <3.1
04/06/21 13.9 <0.31 34.1 8.7 72.4 34.2 151 1.6 J <5.0 1.2 J 2.8 2.0 <0.31 1.1 J 4.4 <0.31 9.5 8 1.8 7.6 <0.31 10.2 0.67 J
02/16/15 <0.17 <0.17 <0.15 <0.43 <0.16 <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 <0.16 <0.12 <0.12 <0.16 <0.12 <0.16 <0.13 <0.14 <0.14
07/27/16 <0.13 <0.13 <0.13 <0.31 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 0.16 J 0.27 J <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
01/18/17 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
12/18/17 <0.13 <0.13 <0.13 <0.26 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
10/10/19 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 <2.0 <0.20 <2.0 <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
04/06/21 <0.63 <0.63 <0.63 <1.3 <0.63 0.69 J <10 <1.0 <10 <0.63 <0.63 <0.63 2.2 J <1.0 <0.63 0.84 J <0.63 <0.63 <0.63 <0.63 <0.63 <0.63 <0.63
2L Standard (µg/l)
GCL (µg/l)
MW-1
MW-2
MW-3
MW-4
MW-5
MW-6
MW-7
MW-8
MW-9 1,3,5-Trimethylbenzene1,2,4-TrimethylbenzeneChloroform (Trichloromethane)Methyl chloride(Chloromethane)1,2-Dichloroethanen-Propylbenzene1,2,4-TrichlorobenzeneHexachlorobutadieneIsopropylbenzeneDi-isopropyl etherp-Isopropyltoluene(4-Isopropyltoluene)Analytical Method SM 6200B SM 6200
Contaminant of Concern BenzeneTolueneEthylbenzeneTotal XylenesMethyl-tert-butyl ether(MTBE)Naphthalenetert-Butyl alcohol(TBA)n-Butylbenzenesec-Butylbenzenetert-Butylbenzenetert-Amyl alcohol(TAA)tert-Amyl methyl ether (TAME)TABLE 6
SUMMARY OF GROUND WATER SAMPLE ANALYTICAL RESULTS
TWIN ROADS MOBILE (Incident No. 37896)
Facility ID # : 0-00-0000019265
Page 1 of 1
Date: 04/22/21
Well ID
Date
Collected
(mm/dd/yy)
1 600 600 500 20 6 40 128 10 70 70 70 70 3 0.4 0.4 70 70 25 70 70 400 400
5,000 260,000 84,500 85,500 20,000 6,000 40,000 12,800 10,000 6,900 8,500 15,000 70,000 3,000 400 400 25,000 70,000 11,700 30,000 70,000 28,500 25,000
2L Standard (µg/l)
GCL (µg/l)1,3,5-Trimethylbenzene1,2,4-TrimethylbenzeneChloroform (Trichloromethane)Methyl chloride(Chloromethane)1,2-Dichloroethanen-Propylbenzene1,2,4-TrichlorobenzeneHexachlorobutadieneIsopropylbenzeneDi-isopropyl etherp-Isopropyltoluene(4-Isopropyltoluene)Analytical Method SM 6200B SM 6200
Contaminant of Concern BenzeneTolueneEthylbenzeneTotal XylenesMethyl-tert-butyl ether(MTBE)Naphthalenetert-Butyl alcohol(TBA)n-Butylbenzenesec-Butylbenzenetert-Butylbenzenetert-Amyl alcohol(TAA)tert-Amyl methyl ether (TAME)TABLE 6
SUMMARY OF GROUND WATER SAMPLE ANALYTICAL RESULTS
TWIN ROADS MOBILE (Incident No. 37896)
Facility ID # : 0-00-0000019265
03/14/13 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
02/16/15 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
07/27/16 23,600 114,000 9,510 54,600 1,410 3,100 NR NR NR 727 288 <63 <63 <100 <63 <63 761 722 165 J 3,330 <63 22,900 5,750
01/18/17 30,200 204,000 17,900 93,800 732 J 4,410 NR NR NR 1,030 425 J <250 <250 <400 <250 <250 1,100 872 J 273 J 5,550 <250 35,600 8,730
12/18/17 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
10/22/19 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
04/06/21 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
03/14/13 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
02/16/15 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
07/27/16 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
01/18/17 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
12/18/17 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
10/22/19 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
04/06/21 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
02/16/15 <0.17 <0.17 <0.15 <0.43 <0.16 <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 <0.16 <0.12 <0.12 <0.16 <0.12 <0.16 <0.13 <0.14 <0.14
07/27/16 <0.13 <0.13 <0.13 <0.31 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 0.23 J <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
01/18/17 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
12/18/17 1.1 <0.13 <0.13 <0.26 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
10/10/19 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 <2.0 <0.20 <2.0 <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
04/06/21 <0.25 <0.25 <0.25 <0.50 <0.25 <0.25 <4.0 <0.40 <4.0 <0.25 <0.25 <0.25 <0.25 <0.40 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25 <0.25
02/16/15 <0.17 <0.17 <0.15 <0.43 <0.16 <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 <0.16 <0.12 <0.12 <0.16 <0.12 <0.16 <0.13 <0.14 <0.14
07/27/16 <0.13 <0.13 <0.13 <0.31 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
01/18/17 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
12/18/17 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
10/10/19 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 <2.0 <0.20 <2.0 <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
04/06/21 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 <2.0 <0.20 <2.0 <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
02/16/15 <0.17 <0.17 <0.15 <0.43 <0.16 <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 <0.16 <0.12 <0.12 <0.16 <0.12 <0.16 <0.13 <0.14 <0.14
07/27/16 0.62 <0.13 <0.13 <0.31 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 0.35 J <0.13 <0.13 <0.13 <0.13 <0.13
01/18/17 <0.13 <0.13 <0.13 <0.25 0.15 J <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 0.24 J <0.13 <0.13 <0.13 <0.13 <0.13
12/18/17 2.8 <0.13 <0.13 <0.25 0.87 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 0.50 2.5 <0.13 <0.13 <0.13 <0.13 <0.13
02/16/15 83.2 0.21 J <0.15 1.5 674 1.2 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 <0.16 <0.12 0.42 J 41.5 <0.12 <0.16 <0.13 0.14 J <0.14
07/27/16 548 0.89 <0.13 3.0 890 9.3 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 0.15 J <0.13 1.4 52.5 <0.13 0.7 <0.13 0.28 J <0.13
01/18/17 664 3.9 J <3.1 <6.3 1,710 8.5 J NR NR NR <3.1 <3.1 <3.1 <3.1 <5.0 <3.1 <3.1 <3.1 94.1 <3.1 <3.1 <3.1 <3.1 <3.1
12/18/17 857 <6.3 <6.3 <13 1,840 37.8 NR NR NR <6.3 <6.3 <6.3 <6.3 <10 <6.3 <6.3 <6.3 115 <6.3 <6.3 <6.3 <6.3 <6.3
10/10/19 1,830 1,120 64.8 211 1,920 15.4 J 2,550 48.0 J <100 <6.3 <6.3 <6.3 <6.3 <10 <6.3 <6.3 <6.3 132 <6.3 7.4 J <6.3 22.5 J <6.3
04/06/21 486 10.5 J 7.9 J <13 1,490 <6.3 1,570 35.3 J <100 <6.3 <6.3 <6.3 <6.3 <10 <6.3 <6.3 <6.3 92.2 <6.3 <6.3 <6.3 <6.3 <6.3
11/02/15 14,300 26,400 2,130 15,000 22,600 653 NR NR NR <72 <69 <73 <86 <79 <82 <61 104 J 1,080 <61 369 <65 3,400 756
07/27/16 4,210 2,470 461 2,720 2,470 537 NR NR NR 46.4 J 24.4 J <13 <13 <20 <13 <13 106 198 13.1 J 245 <13 1,430 372
01/18/17 7,300 9,210 497 4,080 3,590 526 NR NR NR <25 <25 <25 <25 <40 <25 <25 66.8 J 309 <25 177 <25 1,050 240
12/18/17 7,560 9,120 842 4,000 4,090 609 NR NR NR 48.5 24.1 J <6.3 <6.3 <10 <6.3 <6.3 129 382 13.8 J 316 <6.3 2,020 456
10/10/19 3,730 2,210 469 1,180 1,680 306 841 J 96.9 J <200 <13 <13 <13 <13 <20 <13 <13 80.9 154 <13 163 <13 982 200
04/06/21 2,940 2,180 381 1,050 1,140 294 1,020 73.8 J <200 <13 <13 <13 <13 <20 <13 <13 62.7 121 <13 125 <13 687 113
11/02/15 2,240 96.6 82.6 230 843 65.5 NR NR NR <7.2 <6.9 <7.3 <8.6 <7.9 87.9 <6.1 9.4 J 118 9.1 J 11.0 J <6.5 72.5 30.3
07/27/16 1,510 146 485 714 68.3 652 NR NR NR 35.6 21.8 J <6.3 <6.3 <10 18.2 J <6.3 122 36.2 24.0 J 195 <6.3 781 194
01/18/17 1,250 74.3 221 216 61.5 317 NR NR NR 11.2 J 9.1 J <6.3 38.1 <10 14.4 J <6.3 68.3 24.9 J 9.9 J 112 <6.3 242 55.9
12/18/17 666 27.6 97.6 101 101 115 NR NR NR 6.0 J 7.7 J <2.5 <2.5 <4.0 20.0 <2.5 50.6 38.9 6.3 J 56.4 <2.5 120 30.1
10/10/19 493 31 144 101 <2.5 208 304 <4.0 <40 5.5 J 6.8 J <2.5 20.6 <4.0 7.4 J <2.5 38.2 18.1 6.3 J 47.8 <2.5 138 46.4
04/06/21 405 36.4 383 157 <2.5 434 294 <4.0 <40 10.7 11.7 4.1 J <2.5 <4.0 <2.5 <2.5 88.2 5.5 J 15.6 111 <2.5 124 51.6
11/02/15 14.7 0.38 J 0.22 J <2.2 103 <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 15.8 <0.12 0.14 J 21.8 <0.12 <0.16 <0.13 <0.14 <0.14
07/27/16 3.1 0.39 J 0.17 J 0.50 J 49.6 0.17 J NR NR NR <0.13 0.21 J 0.37 J <0.13 <0.20 11.9 <0.13 0.35 J 20.1 <0.13 <0.13 <0.13 0.56 0.20 J
01/18/17 0.87 <0.13 <0.13 <0.25 28.6 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 7 <0.13 0.15 J 14.1 <0.13 <0.13 <0.13 <0.13 <0.13
12/18/17 1.1 <0.13 <0.13 <0.25 29.6 0.79 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 6.9 <0.13 0.14 J 9.8 <0.13 <0.13 <0.13 0.14 J <0.13
10/10/19 1.1 <0.13 <0.13 <0.25 35.1 <0.13 390 0.41 J <2.0 <0.13 0.14 J 0.22 J <0.13 <0.20 5.7 <0.13 0.15 J 9.7 <0.13 <0.13 <0.13 0.14 J 0.22 J
04/06/21 3.0 <0.25 <0.25 <0.50 82.2 <0.25 667 0.91 J 140 <0.25 <0.25 <0.25 0.48 J <0.40 9.9 <0.25 0.28 J 10.2 <0.25 <0.25 <0.25 <0.25 <0.25
MW-10
MW-11
MW-12
MW-13
MW-14
DW-1
OW-1
OW-2
OW-3
Page 1 of 1
Date: 04/22/21
Well ID
Date
Collected
(mm/dd/yy)
1 600 600 500 20 6 40 128 10 70 70 70 70 3 0.4 0.4 70 70 25 70 70 400 400
5,000 260,000 84,500 85,500 20,000 6,000 40,000 12,800 10,000 6,900 8,500 15,000 70,000 3,000 400 400 25,000 70,000 11,700 30,000 70,000 28,500 25,000
2L Standard (µg/l)
GCL (µg/l)1,3,5-Trimethylbenzene1,2,4-TrimethylbenzeneChloroform (Trichloromethane)Methyl chloride(Chloromethane)1,2-Dichloroethanen-Propylbenzene1,2,4-TrichlorobenzeneHexachlorobutadieneIsopropylbenzeneDi-isopropyl etherp-Isopropyltoluene(4-Isopropyltoluene)Analytical Method SM 6200B SM 6200
Contaminant of Concern BenzeneTolueneEthylbenzeneTotal XylenesMethyl-tert-butyl ether(MTBE)Naphthalenetert-Butyl alcohol(TBA)n-Butylbenzenesec-Butylbenzenetert-Butylbenzenetert-Amyl alcohol(TAA)tert-Amyl methyl ether (TAME)TABLE 6
SUMMARY OF GROUND WATER SAMPLE ANALYTICAL RESULTS
TWIN ROADS MOBILE (Incident No. 37896)
Facility ID # : 0-00-0000019265
02/16/15 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
07/27/16 15,400 60,800 8,110 49,600 1,980 2,460 NR NR NR 427 192 J <63 <63 <100 <63 <63 562 503 102 J 2,390 <63 17,000 4,180
01/18/17 22,200 61,300 4,420 25,900 2,410 799 NR NR NR <130 <130 <130 <130 <200 <130 <130 <130 694 <130 472 J <130 3,930 866
12/18/17 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
10/10/19 13,100 39,800 4,570 28,300 171 J 1,870 <2000 <200 <2000 289 J 155 J <130 <130 <200 <130 <130 334 J 140 J <130 1,380 <130 13,300 3,490
04/06/21 7,660 19,500 1,950 12,600 <63 784 <1000 <100 <1000 <63 <63 <63 <63 <100 <63 <63 101 J 73.0 J <63 345 <63 4,230 1,020
02/16/15 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
07/27/16 5,540 28,400 4,560 29,300 473 2,420 NR NR NR 442 <130 <25 <25 <40 <130 <25 138 J 216 <130 1,690 <25 5,180 3,260
01/18/17 5,340 30,000 2,630 16,300 471 J 875 NR NR NR <130 <130 <130 <130 <200 <130 <130 <130 156 J <130 387 J <130 3,520 784
12/18/17 FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP FP
10/10/19 1,160 7,820 1,250 9,360 <25 675 <400 <40 <400 37.1 J <25 <25 <25 <40 <25 <25 58.5 J <25 <25 196 <25 3,380 1,040
04/06/21 947 5,600 1,340 9,030 <25 596 778 J <40 <400 <25 <25 <25 <25 <40 <25 <25 68.4 J <25 <25 190 <25 2,660 787
11/02/15 976 45.3 <3.8 <11 2,390 7.4 J NR NR NR <3.6 <3.5 <3.6 150 <4.0 5.6 J <3.1 3.2 J 138 <3.1 <3.9 <3.3 <3.4 <3.4
07/27/16 1,050 85.0 <13 <31 4,830 27.4 J NR NR NR <13 <13 <13 339 <20 24.0 J <13 <13 336 <13 <13 <13 <13 <13
01/18/17 708 75.8 J <25 <50 5,130 <25 NR NR NR <25 <25 <25 35.3 J <40 26.0 J <25 <25 346 <25 <25 <25 <25 <25
12/18/17 473 14.7 J <6.3 <13 1,370 9.0 J NR NR NR <6.3 <6.3 <6.3 194 <10 44.7 <6.3 <6.3 146 <6.3 <6.3 <6.3 <6.3 <6.3
10/10/19 2,760 30.7 <6.3 25.6 J 4,060 96.3 2,870 233 <100 <6.3 <6.3 <6.3 285 17.0 J 15.6 J <6.3 24.8 J 367 <6.3 12.5 J <6.3 28.6 <6.3
04/06/21 <31 <31 <31 <63 6,870 <31 5,090 319 <500 <31 <31 <31 59.2 J <50 <31 <31 <31 515 <31 <31 <31 <31 <31
02/11/14 204 <2.5 <2.5 <5.0 1,010 4.7 J NR NR NR <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 <2.5 56.3 <2.5 <2.5 <2.5 <2.5 <2.5
09/10/14 132 <2.0 <2.0 <4.0 792 3.7 J NR NR NR <2.0 <2.0 <2.0 <2.0 <2.0 3.0 J <2.0 <2.0 39.9 <2.0 <2.0 <2.0 <2.0 <2.0
03/09/15 367 <8.3 <7.6 <22 1,470 <6.1 NR NR NR <7.2 <6.9 <7.3 <8.6 <7.9 <8.2 <6.1 <5.9 81.2 <6.1 <7.8 <6.5 <6.8 <6.8
10/10/19 0.20 J <0.13 <0.13 <0.25 724 <0.13 210 27.8 <2.0 <0.13 <0.13 <0.13 <0.13 1.4 2.5 <0.13 <0.13 46.7 <0.13 <0.13 <0.13 <0.13 <0.13
10/22/19 <2.5 5.2 J <2.5 <5.0 790 3.0 J NR NR NR NR NR NR NR NR NR NR NR 65.0 NR NR NR NR NR
04/06/21 <2.5 <2.5 <2.5 <5.0 620 <2.5 NR NR NR NR NR NR NR NR NR NR NR 50.1 NR NR NR NR NR
02/11/14 <0.10 <0.10 <0.10 <0.20 <0.10 <0.10 NR NR NR <0.10 <0.10 <0.10 <0.10 0.21 J <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
09/10/14 <0.10 <0.10 <0.10 <0.20 <0.10 <0.10 NR NR NR <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
03/09/15 <0.17 <0.17 <0.15 <0.43 1.0 <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 <0.16 <0.12 <0.12 <0.16 <0.12 <0.16 <0.13 <0.14 <0.14
04/06/21 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR NR NR NR NR NR NR NR NR <0.13 NR NR NR NR NR
02/11/14 <0.10 <0.10 <0.10 <0.20 <0.10 <0.10 NR NR NR <0.10 <0.10 <0.10 <0.10 0.33 J <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
09/10/14 <0.10 <0.10 <0.10 <0.20 <0.10 <0.10 NR NR NR <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
03/09/15 <0.17 <0.17 <0.15 <0.43 <0.16 <0.12 NR NR NR <0.14 <0.14 <0.15 <0.17 <0.16 <0.16 <0.12 <0.12 <0.16 <0.12 <0.16 <0.13 <0.14 <0.14
07/27/16 <0.13 <0.13 <0.13 <0.31 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
01/18/17 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
12/18/17 <0.13 <0.13 <0.13 <0.25 0.33 J <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
10/22/19 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR NR NR NR NR NR NR NR NR <0.13 NR NR NR NR
07/27/16 <0.13 <0.13 <0.13 <0.31 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
01/18/17 <0.13 <0.13 <0.13 <0.25 <0.13 <0.13 NR NR NR <0.13 <0.13 <0.13 <0.13 <0.20 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13 <0.13
Notes:
• < : Less than the method detection limit specified in the laboratory report.
• MAC: Maximum allowable concentrations, specified in TI5A NCAC 2L.0202.
WSW-15
WSW-1/D-3
WSW-1/D-2
• A GAC unit was installed on WSW-1 in April 2013. Sample D-1 was collected before the GAC unit, sample D-2 was collected between the GAC filters, and sample D-3 was collected after the GAC unit.
• Results reported in µg/l.
• GCL: Gross contamination level.
• NR: Analysis not requested.
• Concentrations in bold face type indicate the MACs were below the reported concentrations.
• For other compounds reported below the MACs, refer to the laboratory reports.
RW-1
RW-2
AS-1
WSW-1/D-1
Page 1 of 1
Date: 01/22/2016
MW-3
MW-10
MW-11
MW-3
MW-10
MW-11
RW-1
RW-2
MW-3
MW-10
MW-11
RW-1
RW-2
MW-3
MW-10
MW-11
RW-1
RW-2
1,017.26 33,405 565 1,582.26
TABLE 7
FREE PRODUCT RECOVERY EVENT INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Well ID Date
(mm/dd/yy)
Total Amount
of Product
Recovered
(gallons)
Average
Effluent
Velocity
(ft/min)
Amount of
Liquid
Recovered
(gallons)
Average
Effluent
Temperature
(°F)
Amount of
Product
Recovered as
Liquid (gallons)
Product
Recovery
Method*
Amount of
Vaporized
Product
(gallons)
Average
Effluent
Concentration
(ppm)
Facility ID # : 0-00-0000019265
03/24/14 to
03/28/14
07/08/13 to
07/12/13
102 98,600
10/06/15 to
10/10/15 MMPE 3,922 98 100,000
125
100 282.45
MMPE 4,050
MMPE
300
413.754,300 9,280
573.38116
288.75
9,515273.38100,000
134 7,301MMPE01/12/15 to
01/16/15 3,690
Totals
182.45
7,309 40 312.68
76,600
272.68
Page 1 of 2
Date: 01/22/2016
TABLE 7
FREE PRODUCT RECOVERY EVENT INFORMATION
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Facility ID # : 0-00-0000019265
Notes:
• *: Bailing, Skimming, Aggressive Fluid Vapor Recovery (AFVR), Mobile Multiphase Extraction (MMPE)
• Amount of Vaporized Product (in gallons) is based on Vapor Emissions Summary Sheet, = lbs emitted/6.152
• Amount of Liquid Recovered includes Total liquids (Water and Free Product) as indicated on Disposal Manifest.
• Amount of Product Recovered as Liquid includes only the volume of free product in the tanker at the end of the event (based on Disposal
Manifest and/or Field Notes).
• Total Amount of Product Recovered = Amount of Vaporized Product + Amount of Product Recovered as Liquid
• Total Fluids Removed = Amount of Vaporized Product + Amount of Liquid Recovered
• Information regarding historical free product recovery activities is not available.
34,422.26
7,581.68
1582.26
312.68
SUMMARY OF FLUID REMOVAL
Current Event
Total To Date
Total Fluids Removed (in gallons)Summary Total Product Removed (in gallons)
Page 2 of 2
Date: 08/20/2013
→EPA
Method
5030/
8015B
10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
NA 0.0056 4.3 4.9 4.6 0.16 0.091 4.3 1.7 1.7 8.3 8.5 68 540 31
NA 18 1,200 1,560 3,129 313 350 626 1,564 626 782 782 939 1,500 469
Stockpile 0-100 10/18/11 NA 1,180 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
Stockpile 100-200 10/19/11 NA 137 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
Stockpile 200-300 NA 4,660 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
Stockpile 300-400 NA 6,630 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
Stockpile 400-500 NA 3,650 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
Stockpile 500-600 NA 288 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
DI-1-2'2 <3.6 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
DI-2-2'2 <3.9 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
DI-3-2'2 20.3 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
DI-OE-6'6 NR 0.0712 0.124 0.0099 0.0480 <0.0028 <0.0034 <0.0022 <0.0019 <0.0024 0.0032 J 0.0123 5.32 J <3.1 <3.1
UST-1-1-9'9 32.9 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
UST-1-2-9'9 9.04 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
UST-2-1-8'8 18.1 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
UST-2-2-8'8 61,200 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
UST-2-3-8'8 320 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
UST-3-1-8'8 47.9 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
UST-3-2-8'8 155 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
UST-3-3-8'8 8.85 NR NR NR NR NR NR NR NR NR NR NR NR NR NR
SW-1-13'13 NR <0.0021 0.0107 0.0020 J 0.0108 J 0.0047 J <0.0028 <0.0018 <0.0016 <0.0020 0.0019 J 0.0062 J <3.5 <3.5 <3.5
SW-2-8'8 NR 0.0249 0.0866 0.0297 0.208 0.0068 <0.0026 0.0099 0.0064 J 0.0208 0.0596 0.192 11.4 4.18 J <3.0
SW-3-6'6 NR 0.0245 0.0565 0.0065 J 0.0306 <0.0029 <0.0029 <0.0019 <0.0016 <0.0021 0.0028 J 0.0089 47.8 7.06 J <4.3
SW-4-10'10 NR 0.0639 0.111 0.0096 0.0502 <0.0029 <0.0024 <0.0016 0.0016 J 0.0035 J 0.0112 0.0307 6.96 J <2.7 <2.7
SW-5-10'10 NR 0.0603 0.0553 0.0211 0.0509 <0.0032 0.0592 <0.0021 <0.0017 0.0025 J 0.0025 J 0.0078 J 6.16 J 4.02 J <2.7
SW-6-14'14 NR 0.107 0.172 0.0265 0.102 0.0341 0.0682 <0.0014 0.0016 J 0.0050 J 0.0096 0.0467 11.7 4.70 J 3.70 J
SW-7-16'16 NR 0.0032 J 0.0152 0.0027 J 0.0110 J <0.0024 0.0741 <0.0015 <0.0013 <0.0016 <0.0015 0.0048 J <2.5 <2.5 <2.5
SW-8-7'7 NR 1.43 5.16 0.0986 1.73 0.0532 0.805 <0.0021 0.0056 J 0.0135 0.0085 0.0084 63.2 9.64 J <5.3
Base-1-17'10/19/11 17 NR 4.79 6.48 5.77 33.0 3.47 1.68 <0.15 1.06 1.69 4.19 12.4 317 334 246
Base-2-17'10/20/11 17 NR 95.5 1,110 207 929 51.2 14.2 <2.2 23.1 81.0 125 639 5,930 2,980 2,970BenzeneTABLE 8
SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Facility ID # : 0-00-0000019265
Analytical Method EPA Method 8260B MADEP VPH Method
Sample IDDate Collected (mm/dd/yy)LocationSample Depth (ft-BGS)Gasoline-Range TPHEthylbenzeneXylenes10/19/11
Sidewall
Confirmation
10/20/11
10/18/11 Dispenser
10/18/11
UST Basin
10/20/11 C9-C22 AromaticsRAL
Soil-to-water MSCCs
Residential Soil Cleanup Levels
Stockpile
10/20/11 Isopropylbenzenen-Propylbenzene1,3,5-Trimethylbenzene1,2,4-TrimethylbezeneC5-C8 AliphaticsC9-C18 AliphaticsTolueneNaphthaleneMTBEn-ButylbenzeneBase
Confirmation
Page 1 of 2
Date: 08/20/2013
→EPA
Method
5030/
8015B
10 NA NA NA NA NA NA NA NA NA NA NA NA NA NA
NA 0.0056 4.3 4.9 4.6 0.16 0.091 4.3 1.7 1.7 8.3 8.5 68 540 31
NA 18 1,200 1,560 3,129 313 350 626 1,564 626 782 782 939 1,500 469BenzeneTABLE 8
SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS
TWIN ROADS MOBIL (INCIDENT NO. 37896)
Facility ID # : 0-00-0000019265
Analytical Method EPA Method 8260B MADEP VPH Method
Sample IDDate Collected (mm/dd/yy)LocationSample Depth (ft-BGS)Gasoline-Range TPHEthylbenzeneXylenesC9-C22 AromaticsRAL
Soil-to-water MSCCs
Residential Soil Cleanup Levels Isopropylbenzenen-Propylbenzene1,3,5-Trimethylbenzene1,2,4-TrimethylbezeneC5-C8 AliphaticsC9-C18 AliphaticsTolueneNaphthaleneMTBEn-ButylbenzeneGP-1-8'02/25/13 8 NR 1.64 5.90 19.2 122 29.1 <0.072 6.26 4.21 11.9 36.1 101 1,640 1,700 1,100
GP-2-8'02/25/13 8 NR 5.39 20.1 29.3 198 21.7 <0.062 5.69 6.43 13.1 37.0 98.6 1,220 956 471
GP-3-8'02/25/13 8 NR 0.228 J 0.497 0.538 3.05 0.234 J <0.059 0.186 J 0.147 J 0.328 0.965 2.34 28.3 26.3 13.8
GP-4-8'02/25/13 8 NR 0.0029 J <0.0015 <0.0017 <0.0047 <0.0031 <0.0015 <0.0020 <0.0020 <0.0016 <0.0016 <0.0017 <2.3 <2.3 <2.3
GP-5-8'02/25/13 8 NR 0.0215 0.0048 J 0.0041 J 0.0112 J <0.0026 0.0061 J <0.0017 <0.0017 <0.0014 <0.0014 <0.0014 <3.2 <3.2 <3.2
GP-6-10'02/25/13 10 NR 1.14 1.93 0.512 2.14 0.0761 0.0708 0.0114 0.0200 0.0696 0.101 0.620 5.24 J <3.3 <3.3
GP-7-10'02/25/13 10 NR <0.0012 <0.0012 <0.0013 <0.0037 <0.0024 <0.0012 <0.0015 <0.0016 <0.0012 <0.0013 <0.0013 <2.3 <2.3 <2.3
GP-8-10'02/25/13 10 NR 0.585 1.11 0.0902 0.383 0.0131 0.0346 <0.0014 0.0043 J 0.0131 0.0198 0.0761 5.39 J <2.3 <2.3
GP-9-7'02/25/13 7 NR <0.0012 <0.0012 <0.0013 <0.0038 <0.0025 <0.0012 <0.0016 <0.0016 <0.0013 <0.0013 <0.0013 <2.5 <2.5 <2.5
GP-10-7'02/25/13 7 NR <0.0013 <0.0013 <0.0015 <0.0041 <0.0027 <0.0013 <0.0017 <0.0018 <0.0014 <0.0014 <0.0014 <2.6 <2.6 <2.6
GP-11-6'02/25/13 6 NR <0.0013 <0.0013 <0.0014 <0.0040 <0.0026 <0.0013 <0.0017 <0.0017 <0.0013 <0.0014 <0.0014 <2.8 <2.8 <2.8
GP-12-10'02/25/13 10 NR 0.0027 J 0.0047 J 0.0022 J 0.0051 J <0.0027 <0.0013 <0.0017 <0.0018 <0.0014 <0.0014 <0.0014 <3.3 <3.3 <3.3
GP-13-10'02/25/13 10 NR <0.0012 <0.0012 <0.0013 <0.0036 <0.0023 0.0021 J <0.0015 <0.0015 <0.0012 <0.0012 <0.0013 <2.4 <2.4 <2.4
GP-14-10'02/25/13 10 NR <0.0014 <0.0014 <0.0015 <0.0042 <0.0027 <0.0014 <0.0018 <0.0018 <0.0014 <0.0014 <0.0015 <3.7 <3.7 <3.7
Notes:
• <: Less than the method detection limit specified in the laboratory report.
• J: Estimated value.
• NA: Not applicable.
• Concentrations in bold face type exceed the RALs or soil-to-water MSCCs.
• 1,2-dibromoethane (0.250 J mg/kg) in Base-1-17' exceeded the soil-to-water MSCC on 10/19/11.
• Refer to laboratory report for detectable concentrations that did not exceed the soil-to-water MSCCs or for which no standard is established.
• Results reported in mg/kg (milligrams per kilogram).
• ft-BGS: feet below ground surface.
• RAL: Regulatory Action Level.
• MSCCs: Maximum Soil Contaminant Concentrations.
• NR: Not Requested.
Page 2 of 2

APPENDICES

APPENDIX A
State Correspondence
Site Name City / County /Guilford Incident #37896
Resp Pty Name / Contact Incident Mgr Region WS
RP Type (Owner/Operator / Landowner / Attny-in-fact)Change Order?Prev. TA #30
Consultant / Project Mgr /Rae Troiano Brown
Telephone / Fax Number /Task Authorization Number:31 ChangeOrd:
Project Mgr Email Site Risk / Rank / Abatement:RRA Date:4/20/2012
Proposal# / Scope Dates /% Commercial (C=100%, NC=0%, Both=1%-99%)
Has STF Eligibility Been Determined? (Y/N)Site Status (Active or NFA Date)
With Claim: [ ] All Main Consultant/Contractor invoices attached?[ ] Proof of payment attached directly to the front of each invoice?
w Important: The date of reimbursement is dependent on the Trust Fund balance. There may be a delay in the reimbursement of claims for work under this ePATA.3rd Pty Ded?Task #Lab /
SubCode
RO AuthProposed
Rate/Price
(Consultant)CO AuthProposed Task
Subtotal
(Consultant)
Preapproved
Subtotal
(UST Section)
Claimed
Amount3
(Consultant)
4.031 21 /wells y $110.00 y $2,310.00 $2,310.00 /
y 4.045 1 /well y $75.00 y $75.00 $75.00 /
4.090 #240 21 /samples y $88.00 y $1,848.00 $1,848.00 /
4.091 1 /shipment y $80.00 y $80.00 $80.00 /
y 4.095 #220 2 /samples y $37.00 y $74.00 $74.00 /
6.090 1 /report y $1,800.00 y $1,800.00 $1,800.00 /
12.050 1 /trip y $250.00 y $250.00 $250.00 /
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
Requested Preapproved Claimed 3
TOTAL:$6,437.00 $6,437.00 TOTAL:
Total Standard Costs (Not Third Party)$6,288.00 $6,288.00 Total Standard Costs
Total applied as Third Party Deductible/Damage Costs $149.00 $149.00 Total Third Pty Costs
Process Tracking (Date)
TA Submittal:2/18/21 by:(PM)(Reserved for RO)
RO Review:2/25/21 by:(IM)Joint UST Preapproval Confirmed By:Date1 2/25/2021
CO Review:2/25/21 by:(STF)RP or Designee Receipt Confirmation By:Date 4
1 - This ePATA expires one year from the Joint UST Preapproval date. This does not extend, alter, or supersede any regulatory deadlines (e.g., NORR's, NOV's, Enforcements, etc.)
2 - THE ONE YEAR STATUTE OF LIMITATIONS APPLIES TO EACH INDIVIDUAL TASK. Costs must be claimed within one year of completion of that task to be reimbursable.
3 - Only Tasks included on this ePATA may be claimed. Do not include other Tasks or claimed costs (i.e., Claim preparation) that were not preapproved or the claim will be returned.
4 - Preapproval is not valid (i.e., claimable) until receipt is signed as 'Confirmed' by the RP or their designee and returned to the Trust Fund within a week of approval. Signature
indicates acknowledgement of the tasks and amounts approved. Any objections/appeals must be submitted via Change Order prior to work proceeding. Scope/cost
negotiations do not supersede other regulatory deadlines as described in #1 above. Also, any ePATA that has been signed as 'Confirmed' by both the UST Section and RP
is not to be modified without written consent by all signatories.
5 - Tasks approved on Directed - CAB Only ePATAs must be performed in accordance with all applicable rules, statutes, and RRD Task Scopes of Work to be reimbursed in full.
DWM/UST ePATA 8/1/2020
RTB
Proposed
Units / Type
(Consultant)
Gene Mao
ActiveTRUE
21-124 March 2021
704-845-4012
Dates of Work
(Consultant)
Started1 / Completed2
FINAL REIMBURSEMENT
100.00%
No
[e-mail]
Rex Oil Company
Geological Resources, Inc.
DIRECTED COSTS
High Point
(Must Complete with Claim Submittal)(See Instructions / RRD for Tasks requiring Preapproval / Task Authorization)
Owner/Operator
704-845-4010
(Reserved for Incident Manager)
PREAPPROVAL / TASK AUTHORIZATION
Twin Roads
Note:This Electronic Preapproval Task Authorization (ePATA)shall be used to receive preapproval from the UST Section.A proposal,including maps and figures,must be
attached to elaborate onthe costs for the tasks listedbelowthat describes the scopeof work and the rationale for the proposed activities.If,following completion of this ePATA,
you discover that unexpected tasks must be performed,incurring costs fortasks not originally included with this form,you must complete and submit a separate ePATArequest
designated as a "Change Order"in theprovided space above priorto conducting those tasks.Include acopyof the prior ePATAform forconfirmation.Please attach this formto
the cover of the corresponding claim when requesting reimbursement.IMPORTANT:Only one claim may be submitted per ePATA and all work on the ePATA must have been
completed within 12 months of the completion date of the FIRST completed task to remain within the Statute of Limitations.All ePATAs submitted within a claim are closed with
that claim,andmay not be re-used in a separate submittal,even for costsortasksthat were not originally claimed.Final reimbursement of costs associated with the Total Claimed
amount below may be affected by the eligibility status of the site (i.e.,deductibles,apportionment,etc.),and the documentary validation of incurred costs as reasonable and
necessary expenses per 15A NCAC 2P .0402 and .0404.
LJM
TC
(Initials)
ELECTRONIC PREAPPROVAL TASK AUTHORIZATION FORM
Dept of Environmental Quality -Division of Waste Management

APPENDIX B
Well Construction Logs

Highway Mobil03/05/2019
MobileMobile
MapsMaps
Guilford County, NC - Property Report Guilford County, NC - Property Report Convert to PDFConvert to PDF 11/10/2020 11/10/2020
Parcel IDParcel ID Property AddressProperty Address Legal DescriptionLegal Description
161842161842 1605 E Fairfield Rd1605 E Fairfield Rd .88 AC HAYWORTH SR 1300.88 AC HAYWORTH SR 1300
Owner InformationOwner Information
Owner NameOwner Name Mailing AddressMailing Address City, State ZipCity, State Zip
RASHID, KHALID;RASHID, SAFINARASHID, KHALID;RASHID, SAFINA 1605 E FAIRFIELD RD1605 E FAIRFIELD RD HIGH POINT, NC 27263HIGH POINT, NC 27263
Parcel InformationParcel Information
PINPIN ZoningZoning UseUse TaxTax
DistrictDistrict
7719925598-7719925598-
000000
RS-9-RESIDENTIAL, SINGLE-FAMILY, 4 UNITS PERRS-9-RESIDENTIAL, SINGLE-FAMILY, 4 UNITS PER
ACREACRE RESIDENTIALRESIDENTIAL 00
Parcel SizeParcel Size Appraisal NbrhoodAppraisal Nbrhood Plat/Condo Bk & PgPlat/Condo Bk & Pg
0.880.88 7719B257719B25 N/AN/A
Recent SalesRecent Sales
Book & PageBook & Page Sale DateSale Date Sale PriceSale Price Qualified?Qualified?Improved?Improved?
0066270149100662701491 11/6/200611/6/2006 $95,000$95,000 YesYes YesYes
Appraisal ValuesAppraisal Values
LandLand BuildingsBuildings Extra FeaturesExtra Features Total ValueTotal Value
$16,000$16,000 $72,200$72,200 $1,400$1,400 $89,600$89,600
Extra Feature SummaryExtra Feature Summary
Feature DescriptionFeature Description Size/CountSize/Count MeasureMeasure YearYear ValueValue
GARAGEGARAGE 16x1816x18 DIMENSIONSDIMENSIONS 19751975 $1,400$1,400
Disclaimer: Disclaimer: Map and parcel data are believed to be accurate, but accuracy is not guaranteed. This is not a legal documentMap and parcel data are believed to be accurate, but accuracy is not guaranteed. This is not a legal document
and should not be substituted for a title search, appraisal, survey, or for zoning verification.and should not be substituted for a title search, appraisal, survey, or for zoning verification.
Appraisal Detail (Building 1 of 1) Appraisal Detail (Building 1 of 1)
Bldg#Bldg#DescriptionDescription Bldg UseBldg Use Yr BuiltYr Built Eff Yr BltEff Yr Blt UnitsUnits
11 01-SFR01-SFR 01-SFR-CONST01-SFR-CONST 19551955 19751975 11
Improvement DetailsImprovement Details
StyleStyle FoundationFoundation ExteriorExterior
WallWall Air Cond.Air Cond.
TypeType Comm. RoofComm. Roof
Struct.Struct.Heating TypeHeating Type
RANCHRANCH
W/BASEMENTW/BASEMENT FACEFACE
BRKBRK CENTRALCENTRAL FORCED AIR-FORCED AIR-
DUCTEDDUCTED
Heated SqFtHeated SqFt BedroomsBedrooms BathroomsBathrooms FireplaceFireplace Building GradeBuilding Grade Bldg ValueBldg Value
2,3922,392 00 1.5000001.500000 YesYes D+10 D+10 85%85%$72,200$72,200
Building Area TotalsBuilding Area Totals
CodeCode DescriptionDescription Sq FeetSq Feet
FBM0FBM0 Basement, FinishedBasement, Finished 1,0641,064
FOP0FOP0 Porch, Open FinPorch, Open Fin 120120
FEP0FEP0 Porch, Encl FinishPorch, Encl Finish 144144
FOP0FOP0 Porch, Open FinPorch, Open Fin 176176
UCP0UCP0 Carport, UnfinishedCarport, Unfinished 220220
Disclaimer: Disclaimer: Map and parcel data are believed to be accurate, but accuracy is not guaranteed. This is not a legal documentMap and parcel data are believed to be accurate, but accuracy is not guaranteed. This is not a legal document
and should not be substituted for a title search, appraisal, survey, or for zoning verification.and should not be substituted for a title search, appraisal, survey, or for zoning verification.

APPENDIX C
Laboratory Analytical Report
04/15/21
Technical Report for
GRI (Geological Resources Inc.)
Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
37896/3035
SGS Job Number: FA84483
Sampling Date: 04/06/21
Report to:
GRI
3502 Hayes Rd
Monroe, NC 28110
[e-mail]; [e-mail];
[e-mail]
ATTN: Joanna Alley
Total number of pages in report:
Certifications: FL(E83510), LA(03051), KS(E-10327), IL(200063), NC(573), NJ(FL002), NY(12022), SC(96038001)
DoD ELAP(ANAB L2229), AZ(AZ0806), CA(2937), TX(T104704404), PA(68-03573), VA(460177),
AK, AR, IA, KY, MA, MS, ND, NH, NV, OK, OR, UT, WA, WV
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. • 4405 Vineland Road • Suite C-15 • Orlando, FL 32811 • tel: [phone] • fax: [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: Muna Mohammed 407-425-6700
Norm Farmer
Technical Director
Orlando, FL 04/15/21
e-Hardcopy 2.0
Automated Report
86
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 86
FA84483
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................5
Section 3: Sample Results ........................................................................................................10
3.1: FA84483-1: MW-1 ........................................................................................................11
3.2: FA84483-2: MW-2 ........................................................................................................14
3.3: FA84483-3: MW-4 ........................................................................................................17
3.4: FA84483-4: MW-5 ........................................................................................................20
3.5: FA84483-5: MW-6 ........................................................................................................23
3.6: FA84483-6: MW-7 ........................................................................................................26
3.7: FA84483-7: MW-8 ........................................................................................................29
3.8: FA84483-8: MW-9 ........................................................................................................32
3.9: FA84483-9: MW-12 ......................................................................................................35
3.10: FA84483-10: MW-13 ..................................................................................................38
3.11: FA84483-11: DW-1 .....................................................................................................41
3.12: FA84483-12: RW-1 .....................................................................................................44
3.13: FA84483-13: RW-2 .....................................................................................................47
3.14: FA84483-14: OW-1 ....................................................................................................50
3.15: FA84483-15: OW-2 ....................................................................................................53
3.16: FA84483-16: OW-3 ....................................................................................................56
3.17: FA84483-17: AS-1 ......................................................................................................59
3.18: FA84483-18: WSW-1/D-1 ..........................................................................................62
3.19: FA84483-19: WSW-1/D-2 ..........................................................................................63
Section 4: Misc. Forms ............................................................................................................64
4.1: Chain of Custody ...........................................................................................................65
Section 5: MS Volatiles - QC Data Summaries .....................................................................68
5.1: Method Blank Summary ................................................................................................69
5.2: Blank Spike Summary ...................................................................................................75
5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................81 123452 of 86
FA84483
SGS North America Inc.
Sample Summary
GRI (Geological Resources Inc.)
Job No:FA84483
Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Project No: 37896/3035
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
FA84483-1 04/06/21 11:00 HW 04/07/21 AQ Ground Water MW-1
FA84483-2 04/06/21 09:25 HW 04/07/21 AQ Ground Water MW-2
FA84483-3 04/06/21 12:30 HW 04/07/21 AQ Ground Water MW-4
FA84483-4 04/06/21 09:10 HW 04/07/21 AQ Ground Water MW-5
FA84483-5 04/06/21 10:30 HW 04/07/21 AQ Ground Water MW-6
FA84483-6 04/06/21 11:45 HW 04/07/21 AQ Ground Water MW-7
FA84483-7 04/06/21 09:40 HW 04/07/21 AQ Ground Water MW-8
FA84483-8 04/06/21 08:55 HW 04/07/21 AQ Ground Water MW-9
FA84483-9 04/06/21 08:40 HW 04/07/21 AQ Ground Water MW-12
FA84483-10 04/06/21 08:25 HW 04/07/21 AQ Ground Water MW-13
FA84483-11 04/06/21 10:15 HW 04/07/21 AQ Ground Water DW-1
FA84483-12 04/06/21 13:05 HW 04/07/21 AQ Ground Water RW-1
3 of 86
FA844831
SGS North America Inc.
Sample Summary
(continued)
GRI (Geological Resources Inc.)
Job No:FA84483
Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Project No: 37896/3035
Sample Collected Matrix Client
Number Date Time By Received Code Type Sample ID
FA84483-13 04/06/21 13:30 HW 04/07/21 AQ Ground Water RW-2
FA84483-14 04/06/21 12:45 HW 04/07/21 AQ Ground Water OW-1
FA84483-15 04/06/21 11:30 HW 04/07/21 AQ Ground Water OW-2
FA84483-16 04/06/21 10:45 HW 04/07/21 AQ Ground Water OW-3
FA84483-17 04/06/21 11:15 HW 04/07/21 AQ Water AS-1
FA84483-18 04/06/21 14:00 HW 04/07/21 AQ Ground Water WSW-1/D-1
FA84483-19 04/06/21 14:20 HW 04/07/21 AQ Ground Water WSW-1/D-2
4 of 86
FA844831
Summary of Hits Page 1 of 5
Job Number:FA84483
Account:GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Collected:04/06/21
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
FA84483-1 MW-1
Benzene 520 50 13 ug/l SM 6200B
Di-Isopropyl Ether 119 50 13 ug/l SM 6200B
Ethylbenzene 111 50 13 ug/l SM 6200B
Methyl Tert Butyl Ether 871 50 13 ug/l SM 6200B
Naphthalene 62.7 50 13 ug/l SM 6200B
n-Propylbenzene 14.1 J 50 13 ug/l SM 6200B
Tert-Amyl Alcohol 27600 1000 200 ug/l SM 6200B
Tert-Butyl Alcohol 2780 1000 200 ug/l SM 6200B
1,2,4-Trimethylbenzene 79.9 50 13 ug/l SM 6200B
1,3,5-Trimethylbenzene 44.9 J 50 13 ug/l SM 6200B
m,p-Xylene 122 100 13 ug/l SM 6200B
Xylene (total)122 J 150 25 ug/l SM 6200B
FA84483-2 MW-2
Benzene 8.2 J 25 6.3 ug/l SM 6200B
n-Butylbenzene 9.4 J 25 6.3 ug/l SM 6200B
sec-Butylbenzene 9.0 J 25 6.3 ug/l SM 6200B
Ethylbenzene 611 25 6.3 ug/l SM 6200B
Isopropylbenzene 53.5 25 6.3 ug/l SM 6200B
p-Isopropyltoluene 10.1 J 25 6.3 ug/l SM 6200B
Naphthalene 573 25 6.3 ug/l SM 6200B
n-Propylbenzene 98.0 25 6.3 ug/l SM 6200B
Tert-Amyl Alcohol 213 J 500 100 ug/l SM 6200B
1,2,4-Trimethylbenzene 1110 25 6.3 ug/l SM 6200B
1,3,5-Trimethylbenzene 340 25 6.3 ug/l SM 6200B
m,p-Xylene 820 50 6.3 ug/l SM 6200B
o-Xylene 6.7 J 25 6.3 ug/l SM 6200B
Xylene (total)827 75 13 ug/l SM 6200B
FA84483-3 MW-4
No hits reported in this sample.
FA84483-4 MW-5
No hits reported in this sample.
FA84483-5 MW-6
1,2-Dichloroethane 3.3 2.5 0.63 ug/l SM 6200B
Di-Isopropyl Ether 8.7 2.5 0.63 ug/l SM 6200B
Methyl Tert Butyl Ether 55.4 2.5 0.63 ug/l SM 6200B
5 of 86
FA844832
Summary of Hits Page 2 of 5
Job Number:FA84483
Account:GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Collected:04/06/21
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
Tert-Amyl Alcohol 33.8 J 50 10 ug/l SM 6200B
FA84483-6 MW-7
Benzene 122 2.5 0.63 ug/l SM 6200B
n-Butylbenzene 2.6 2.5 0.63 ug/l SM 6200B
sec-Butylbenzene 3.6 2.5 0.63 ug/l SM 6200B
Di-Isopropyl Ether 1.5 J 2.5 0.63 ug/l SM 6200B
Ethylbenzene 49.3 2.5 0.63 ug/l SM 6200B
Hexachlorobutadiene 2.2 J 2.5 0.63 ug/l SM 6200B
Isopropylbenzene 10.9 2.5 0.63 ug/l SM 6200B
p-Isopropyltoluene 0.84 J 2.5 0.63 ug/l SM 6200B
Naphthalene 11.3 2.5 0.63 ug/l SM 6200B
n-Propylbenzene 7.5 2.5 0.63 ug/l SM 6200B
Tert-Amyl Alcohol 256 50 10 ug/l SM 6200B
Toluene 113 2.5 0.63 ug/l SM 6200B
1,2,3-Trichlorobenzene 0.93 J 2.5 0.63 ug/l SM 6200B
1,2,4-Trichlorobenzene 0.75 J 2.5 0.63 ug/l SM 6200B
1,2,4-Trimethylbenzene 14.7 2.5 0.63 ug/l SM 6200B
1,3,5-Trimethylbenzene 4.1 2.5 0.63 ug/l SM 6200B
m,p-Xylene 79.7 5.0 0.63 ug/l SM 6200B
o-Xylene 32.7 2.5 0.63 ug/l SM 6200B
Xylene (total)112 7.5 1.3 ug/l SM 6200B
FA84483-7 MW-8
Benzene 13.9 1.3 0.31 ug/l SM 6200B
n-Butylbenzene 1.2 J 1.3 0.31 ug/l SM 6200B
sec-Butylbenzene 2.8 1.3 0.31 ug/l SM 6200B
tert-Butylbenzene 2.0 1.3 0.31 ug/l SM 6200B
1,2-Dichloroethane 4.4 1.3 0.31 ug/l SM 6200B
Di-Isopropyl Ether 8.0 1.3 0.31 ug/l SM 6200B
Ethylbenzene 34.1 1.3 0.31 ug/l SM 6200B
Isopropylbenzene 9.5 1.3 0.31 ug/l SM 6200B
p-Isopropyltoluene 1.8 1.3 0.31 ug/l SM 6200B
Methyl Chloride 1.1 J 1.3 0.50 ug/l SM 6200B
Methyl Tert Butyl Ether 72.4 1.3 0.31 ug/l SM 6200B
Naphthalene 34.2 1.3 0.31 ug/l SM 6200B
n-Propylbenzene 7.6 1.3 0.31 ug/l SM 6200B
Tert-Amyl Alcohol 151 25 5.0 ug/l SM 6200B
Tert-Amyl Methyl Ether 1.6 J 2.5 0.50 ug/l SM 6200B
1,2,4-Trimethylbenzene 10.2 1.3 0.31 ug/l SM 6200B
1,3,5-Trimethylbenzene 0.67 J 1.3 0.31 ug/l SM 6200B
m,p-Xylene 7.8 2.5 0.31 ug/l SM 6200B
o-Xylene 0.83 J 1.3 0.31 ug/l SM 6200B
6 of 86
FA844832
Summary of Hits Page 3 of 5
Job Number:FA84483
Account:GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Collected:04/06/21
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
Xylene (total)8.7 3.8 0.63 ug/l SM 6200B
FA84483-8 MW-9
Chloroform 2.2 J 2.5 0.63 ug/l SM 6200B
Hexachlorobutadiene 0.84 J 2.5 0.63 ug/l SM 6200B
Naphthalene a 0.69 J 2.5 0.63 ug/l SM 6200B
FA84483-9 MW-12
No hits reported in this sample.
FA84483-10 MW-13
No hits reported in this sample.
FA84483-11 DW-1
Benzene 486 25 6.3 ug/l SM 6200B
Di-Isopropyl Ether 92.2 25 6.3 ug/l SM 6200B
Ethylbenzene 7.9 J 25 6.3 ug/l SM 6200B
Methyl Tert Butyl Ether 1490 25 6.3 ug/l SM 6200B
Tert-Amyl Alcohol 1570 500 100 ug/l SM 6200B
Tert-Amyl Methyl Ether 35.3 J 50 10 ug/l SM 6200B
Toluene 10.5 J 25 6.3 ug/l SM 6200B
FA84483-12 RW-1
Benzene 7660 250 63 ug/l SM 6200B
Di-Isopropyl Ether 73.0 J 250 63 ug/l SM 6200B
Ethylbenzene 1950 250 63 ug/l SM 6200B
Isopropylbenzene 101 J 250 63 ug/l SM 6200B
Naphthalene 784 250 63 ug/l SM 6200B
n-Propylbenzene 345 250 63 ug/l SM 6200B
Toluene 19500 250 63 ug/l SM 6200B
1,2,4-Trimethylbenzene 4230 250 63 ug/l SM 6200B
1,3,5-Trimethylbenzene 1020 250 63 ug/l SM 6200B
m,p-Xylene 8120 500 63 ug/l SM 6200B
o-Xylene 4470 250 63 ug/l SM 6200B
Xylene (total)12600 750 130 ug/l SM 6200B
FA84483-13 RW-2
Benzene 947 100 25 ug/l SM 6200B
Ethylbenzene 1340 100 25 ug/l SM 6200B
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Summary of Hits Page 4 of 5
Job Number:FA84483
Account:GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Collected:04/06/21
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
Isopropylbenzene 68.4 J 100 25 ug/l SM 6200B
Naphthalene 596 100 25 ug/l SM 6200B
n-Propylbenzene 190 100 25 ug/l SM 6200B
Tert-Amyl Alcohol b 778 J 2000 400 ug/l SM 6200B
Toluene 5600 100 25 ug/l SM 6200B
1,2,4-Trimethylbenzene 2660 100 25 ug/l SM 6200B
1,3,5-Trimethylbenzene 787 100 25 ug/l SM 6200B
m,p-Xylene 5860 200 25 ug/l SM 6200B
o-Xylene 3170 100 25 ug/l SM 6200B
Xylene (total)9030 300 50 ug/l SM 6200B
FA84483-14 OW-1
Benzene 2940 50 13 ug/l SM 6200B
Di-Isopropyl Ether 121 50 13 ug/l SM 6200B
Ethylbenzene 381 50 13 ug/l SM 6200B
Isopropylbenzene 62.7 50 13 ug/l SM 6200B
Methyl Tert Butyl Ether 1140 50 13 ug/l SM 6200B
Naphthalene 294 50 13 ug/l SM 6200B
n-Propylbenzene 125 50 13 ug/l SM 6200B
Tert-Amyl Alcohol b 1020 1000 200 ug/l SM 6200B
Tert-Amyl Methyl Ether 73.8 J 100 20 ug/l SM 6200B
Toluene 2180 50 13 ug/l SM 6200B
1,2,4-Trimethylbenzene 687 50 13 ug/l SM 6200B
1,3,5-Trimethylbenzene 113 50 13 ug/l SM 6200B
m,p-Xylene 764 100 13 ug/l SM 6200B
o-Xylene 290 50 13 ug/l SM 6200B
Xylene (total)1050 150 25 ug/l SM 6200B
FA84483-15 OW-2
Benzene 405 10 2.5 ug/l SM 6200B
n-Butylbenzene 10.7 10 2.5 ug/l SM 6200B
sec-Butylbenzene 11.7 10 2.5 ug/l SM 6200B
tert-Butylbenzene 4.1 J 10 2.5 ug/l SM 6200B
Di-Isopropyl Ether 5.5 J 10 2.5 ug/l SM 6200B
Ethylbenzene 383 10 2.5 ug/l SM 6200B
Isopropylbenzene 88.2 10 2.5 ug/l SM 6200B
p-Isopropyltoluene 15.6 10 2.5 ug/l SM 6200B
Naphthalene 434 10 2.5 ug/l SM 6200B
n-Propylbenzene 111 10 2.5 ug/l SM 6200B
Tert-Amyl Alcohol b 294 200 40 ug/l SM 6200B
Toluene 36.4 10 2.5 ug/l SM 6200B
1,2,4-Trimethylbenzene 124 10 2.5 ug/l SM 6200B
1,3,5-Trimethylbenzene 51.6 10 2.5 ug/l SM 6200B
8 of 86
FA844832
Summary of Hits Page 5 of 5
Job Number:FA84483
Account:GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Collected:04/06/21
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
m,p-Xylene 122 20 2.5 ug/l SM 6200B
o-Xylene 35.2 10 2.5 ug/l SM 6200B
Xylene (total)157 30 5.0 ug/l SM 6200B
FA84483-16 OW-3
Benzene 3.0 1.0 0.25 ug/l SM 6200B
Chloroform 0.48 J 1.0 0.25 ug/l SM 6200B
1,2-Dichloroethane 9.9 1.0 0.25 ug/l SM 6200B
Di-Isopropyl Ether 10.2 1.0 0.25 ug/l SM 6200B
Isopropylbenzene 0.28 J 1.0 0.25 ug/l SM 6200B
Methyl Tert Butyl Ether 82.2 1.0 0.25 ug/l SM 6200B
Tert-Amyl Alcohol b 667 20 4.0 ug/l SM 6200B
Tert-Amyl Methyl Ether 0.91 J 2.0 0.40 ug/l SM 6200B
Tert-Butyl Alcohol 140 20 4.0 ug/l SM 6200B
FA84483-17 AS-1
Chloroform 59.2 J 130 31 ug/l SM 6200B
Di-Isopropyl Ether 515 130 31 ug/l SM 6200B
Methyl Tert Butyl Ether 6870 130 31 ug/l SM 6200B
Tert-Amyl Alcohol b 5090 2500 500 ug/l SM 6200B
Tert-Amyl Methyl Ether 319 250 50 ug/l SM 6200B
FA84483-18 WSW-1/D-1
Di-Isopropyl Ether 50.1 10 2.5 ug/l SM 6200B
Methyl Tert Butyl Ether 620 10 2.5 ug/l SM 6200B
FA84483-19 WSW-1/D-2
No hits reported in this sample.
(a) Suspected carry-over.
(b) Associated BS recovery outside control limits high.
9 of 86
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Sample Results
Report of Analysis
Orlando, FL
Section 3
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Report of Analysis Page 1 of 3
Client Sample ID:MW-1
Lab Sample ID:FA84483-1 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106436.D 100 04/08/21 12:42 LR n/a n/a VE2449
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 520 50 13 ug/l
108-86-1 Bromobenzene ND 50 13 ug/l
74-97-5 Bromochloromethane ND 50 13 ug/l
75-27-4 Bromodichloromethane ND 50 13 ug/l
75-25-2 Bromoform ND 50 13 ug/l
104-51-8 n-Butylbenzene ND 50 13 ug/l
135-98-8 sec-Butylbenzene ND 50 13 ug/l
98-06-6 tert-Butylbenzene ND 50 13 ug/l
56-23-5 Carbon Tetrachloride ND 50 13 ug/l
108-90-7 Chlorobenzene ND 50 13 ug/l
75-00-3 Chloroethane ND 50 20 ug/l
67-66-3 Chloroform ND 50 13 ug/l
95-49-8 o-Chlorotoluene ND 50 13 ug/l
106-43-4 p-Chlorotoluene ND 50 13 ug/l
124-48-1 Dibromochloromethane ND 50 13 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 50 25 ug/l
106-93-4 1,2-Dibromoethane ND 50 13 ug/l
75-71-8 Dichlorodifluoromethane ND 50 20 ug/l
95-50-1 1,2-Dichlorobenzene ND 50 13 ug/l
541-73-1 1,3-Dichlorobenzene ND 50 13 ug/l
106-46-7 1,4-Dichlorobenzene ND 50 13 ug/l
75-34-3 1,1-Dichloroethane ND 50 13 ug/l
107-06-2 1,2-Dichloroethane ND 50 13 ug/l
75-35-4 1,1-Dichloroethylene ND 50 13 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 50 13 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 50 13 ug/l
78-87-5 1,2-Dichloropropane ND 50 13 ug/l
142-28-9 1,3-Dichloropropane ND 50 13 ug/l
594-20-7 2,2-Dichloropropane ND 50 13 ug/l
563-58-6 1,1-Dichloropropene ND 50 13 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 50 13 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 50 13 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
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Report of Analysis Page 2 of 3
Client Sample ID:MW-1
Lab Sample ID:FA84483-1 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 119 50 13 ug/l
64-17-5 Ethyl Alcohol a ND 10000 6500 ug/l
100-41-4 Ethylbenzene 111 50 13 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 50 13 ug/l
87-68-3 Hexachlorobutadiene ND 50 13 ug/l
98-82-8 Isopropylbenzene ND 50 13 ug/l
99-87-6 p-Isopropyltoluene ND 50 13 ug/l
74-83-9 Methyl Bromide ND 50 20 ug/l
74-87-3 Methyl Chloride ND 50 20 ug/l
74-95-3 Methylene Bromide ND 50 13 ug/l
75-09-2 Methylene Chloride ND 200 100 ug/l
1634-04-4 Methyl Tert Butyl Ether 871 50 13 ug/l
91-20-3 Naphthalene 62.7 50 13 ug/l
103-65-1 n-Propylbenzene 14.1 50 13 ug/l J
100-42-5 Styrene ND 50 13 ug/l
75-85-4 Tert-Amyl Alcohol 27600 1000 200 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 100 20 ug/l
75-65-0 Tert-Butyl Alcohol 2780 1000 200 ug/l
762-75-4 Tert-Butyl Formate ND 1000 200 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 50 13 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 50 13 ug/l
127-18-4 Tetrachloroethylene ND 50 13 ug/l
108-88-3 Toluene ND 50 13 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 50 13 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 50 13 ug/l
71-55-6 1,1,1-Trichloroethane ND 50 13 ug/l
79-00-5 1,1,2-Trichloroethane ND 50 13 ug/l
79-01-6 Trichloroethylene ND 50 13 ug/l
75-69-4 Trichlorofluoromethane ND 50 20 ug/l
96-18-4 1,2,3-Trichloropropane ND 50 13 ug/l
95-63-6 1,2,4-Trimethylbenzene 79.9 50 13 ug/l
108-67-8 1,3,5-Trimethylbenzene 44.9 50 13 ug/l J
75-01-4 Vinyl Chloride ND 50 13 ug/l
m,p-Xylene 122 100 13 ug/l
95-47-6 o-Xylene ND 50 13 ug/l
1330-20-7 Xylene (total)122 150 25 ug/l J
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 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
12 of 86
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-1
Lab Sample ID:FA84483-1 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 104%70-130%
2037-26-5 Toluene-D8 95%70-130%
460-00-4 4-Bromofluorobenzene 101%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
13 of 86
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SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-2
Lab Sample ID:FA84483-2 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106437.D 50 04/08/21 13:05 LR n/a n/a VE2449
Run #2 a E106516.D 25 04/13/21 20:43 LR n/a n/a VE2453
Purge Volume
Run #1 10.0 ml
Run #2 10.0 ml
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 8.2 25 6.3 ug/l J
108-86-1 Bromobenzene ND 25 6.3 ug/l
74-97-5 Bromochloromethane ND 25 6.3 ug/l
75-27-4 Bromodichloromethane ND 25 6.3 ug/l
75-25-2 Bromoform ND 25 6.3 ug/l
104-51-8 n-Butylbenzene 9.4 25 6.3 ug/l J
135-98-8 sec-Butylbenzene 9.0 25 6.3 ug/l J
98-06-6 tert-Butylbenzene ND 25 6.3 ug/l
56-23-5 Carbon Tetrachloride ND 25 6.3 ug/l
108-90-7 Chlorobenzene ND 25 6.3 ug/l
75-00-3 Chloroethane ND 25 10 ug/l
67-66-3 Chloroform ND 25 6.3 ug/l
95-49-8 o-Chlorotoluene ND 25 6.3 ug/l
106-43-4 p-Chlorotoluene ND 25 6.3 ug/l
124-48-1 Dibromochloromethane ND 25 6.3 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 25 12 ug/l
106-93-4 1,2-Dibromoethane ND 25 6.3 ug/l
75-71-8 Dichlorodifluoromethane ND 25 10 ug/l
95-50-1 1,2-Dichlorobenzene ND 25 6.3 ug/l
541-73-1 1,3-Dichlorobenzene ND 25 6.3 ug/l
106-46-7 1,4-Dichlorobenzene ND 25 6.3 ug/l
75-34-3 1,1-Dichloroethane ND 25 6.3 ug/l
107-06-2 1,2-Dichloroethane ND 25 6.3 ug/l
75-35-4 1,1-Dichloroethylene ND 25 6.3 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 25 6.3 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 25 6.3 ug/l
78-87-5 1,2-Dichloropropane ND 25 6.3 ug/l
142-28-9 1,3-Dichloropropane ND 25 6.3 ug/l
594-20-7 2,2-Dichloropropane ND 25 6.3 ug/l
563-58-6 1,1-Dichloropropene ND 25 6.3 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 25 6.3 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 25 6.3 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
14 of 86
FA8448333.2
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-2
Lab Sample ID:FA84483-2 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether ND 25 6.3 ug/l
64-17-5 Ethyl Alcohol b ND 5000 3300 ug/l
100-41-4 Ethylbenzene 611 25 6.3 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 25 6.3 ug/l
87-68-3 Hexachlorobutadiene ND 25 6.3 ug/l
98-82-8 Isopropylbenzene 53.5 25 6.3 ug/l
99-87-6 p-Isopropyltoluene 10.1 25 6.3 ug/l J
74-83-9 Methyl Bromide ND 25 10 ug/l
74-87-3 Methyl Chloride ND 25 10 ug/l
74-95-3 Methylene Bromide ND 25 6.3 ug/l
75-09-2 Methylene Chloride ND 100 50 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 25 6.3 ug/l
91-20-3 Naphthalene 573 25 6.3 ug/l
103-65-1 n-Propylbenzene 98.0 25 6.3 ug/l
100-42-5 Styrene ND 25 6.3 ug/l
75-85-4 Tert-Amyl Alcohol 213 500 100 ug/l J
994-05-8 Tert-Amyl Methyl Ether ND 50 10 ug/l
75-65-0 Tert-Butyl Alcohol ND 500 100 ug/l
762-75-4 Tert-Butyl Formate ND 500 100 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 25 6.3 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 25 6.3 ug/l
127-18-4 Tetrachloroethylene ND 25 6.3 ug/l
108-88-3 Toluene ND 25 6.3 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 25 6.3 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 25 6.3 ug/l
71-55-6 1,1,1-Trichloroethane ND 25 6.3 ug/l
79-00-5 1,1,2-Trichloroethane ND 25 6.3 ug/l
79-01-6 Trichloroethylene ND 25 6.3 ug/l
75-69-4 Trichlorofluoromethane ND 25 10 ug/l
96-18-4 1,2,3-Trichloropropane ND 25 6.3 ug/l
95-63-6 1,2,4-Trimethylbenzene 1110 25 6.3 ug/l
108-67-8 1,3,5-Trimethylbenzene 340 25 6.3 ug/l
75-01-4 Vinyl Chloride ND 25 6.3 ug/l
m,p-Xylene 820 50 6.3 ug/l
95-47-6 o-Xylene 6.7 25 6.3 ug/l J
1330-20-7 Xylene (total)827 75 13 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 104%97%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 86
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-2
Lab Sample ID:FA84483-2 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 107%102%70-130%
2037-26-5 Toluene-D8 95%99%70-130%
460-00-4 4-Bromofluorobenzene 97%100%70-130%
(a) Sample vial(s) contained significant headspace; reported results are considered minimum values. Confirmation
run.
(b) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
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SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-4
Lab Sample ID:FA84483-3 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106438.D 5 04/08/21 13:28 LR n/a n/a VE2449
Run #2 a E106514.D 1 04/13/21 19:56 LR n/a n/a VE2453
Purge Volume
Run #1 10.0 ml
Run #2 10.0 ml
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 2.5 0.63 ug/l
108-86-1 Bromobenzene ND 2.5 0.63 ug/l
74-97-5 Bromochloromethane ND 2.5 0.63 ug/l
75-27-4 Bromodichloromethane ND 2.5 0.63 ug/l
75-25-2 Bromoform ND 2.5 0.63 ug/l
104-51-8 n-Butylbenzene ND 2.5 0.63 ug/l
135-98-8 sec-Butylbenzene ND 2.5 0.63 ug/l
98-06-6 tert-Butylbenzene ND 2.5 0.63 ug/l
56-23-5 Carbon Tetrachloride ND 2.5 0.63 ug/l
108-90-7 Chlorobenzene ND 2.5 0.63 ug/l
75-00-3 Chloroethane ND 2.5 1.0 ug/l
67-66-3 Chloroform ND 2.5 0.63 ug/l
95-49-8 o-Chlorotoluene ND 2.5 0.63 ug/l
106-43-4 p-Chlorotoluene ND 2.5 0.63 ug/l
124-48-1 Dibromochloromethane ND 2.5 0.63 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 2.5 1.2 ug/l
106-93-4 1,2-Dibromoethane ND 2.5 0.63 ug/l
75-71-8 Dichlorodifluoromethane ND 2.5 1.0 ug/l
95-50-1 1,2-Dichlorobenzene ND 2.5 0.63 ug/l
541-73-1 1,3-Dichlorobenzene ND 2.5 0.63 ug/l
106-46-7 1,4-Dichlorobenzene ND 2.5 0.63 ug/l
75-34-3 1,1-Dichloroethane ND 2.5 0.63 ug/l
107-06-2 1,2-Dichloroethane ND 2.5 0.63 ug/l
75-35-4 1,1-Dichloroethylene ND 2.5 0.63 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 2.5 0.63 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 2.5 0.63 ug/l
78-87-5 1,2-Dichloropropane ND 2.5 0.63 ug/l
142-28-9 1,3-Dichloropropane ND 2.5 0.63 ug/l
594-20-7 2,2-Dichloropropane ND 2.5 0.63 ug/l
563-58-6 1,1-Dichloropropene ND 2.5 0.63 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 2.5 0.63 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 2.5 0.63 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
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Report of Analysis Page 2 of 3
Client Sample ID:MW-4
Lab Sample ID:FA84483-3 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether ND 2.5 0.63 ug/l
64-17-5 Ethyl Alcohol b ND 500 330 ug/l
100-41-4 Ethylbenzene ND 2.5 0.63 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 2.5 0.63 ug/l
87-68-3 Hexachlorobutadiene ND 2.5 0.63 ug/l
98-82-8 Isopropylbenzene ND 2.5 0.63 ug/l
99-87-6 p-Isopropyltoluene ND 2.5 0.63 ug/l
74-83-9 Methyl Bromide ND 2.5 1.0 ug/l
74-87-3 Methyl Chloride ND 2.5 1.0 ug/l
74-95-3 Methylene Bromide ND 2.5 0.63 ug/l
75-09-2 Methylene Chloride ND 10 5.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 2.5 0.63 ug/l
91-20-3 Naphthalene ND 2.5 0.63 ug/l
103-65-1 n-Propylbenzene ND 2.5 0.63 ug/l
100-42-5 Styrene ND 2.5 0.63 ug/l
75-85-4 Tert-Amyl Alcohol ND 50 10 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 5.0 1.0 ug/l
75-65-0 Tert-Butyl Alcohol ND 50 10 ug/l
762-75-4 Tert-Butyl Formate ND 50 10 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 2.5 0.63 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 2.5 0.63 ug/l
127-18-4 Tetrachloroethylene ND 2.5 0.63 ug/l
108-88-3 Toluene ND 2.5 0.63 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 2.5 0.63 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 2.5 0.63 ug/l
71-55-6 1,1,1-Trichloroethane ND 2.5 0.63 ug/l
79-00-5 1,1,2-Trichloroethane ND 2.5 0.63 ug/l
79-01-6 Trichloroethylene ND 2.5 0.63 ug/l
75-69-4 Trichlorofluoromethane ND 2.5 1.0 ug/l
96-18-4 1,2,3-Trichloropropane ND 2.5 0.63 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 2.5 0.63 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 2.5 0.63 ug/l
75-01-4 Vinyl Chloride ND 2.5 0.63 ug/l
m,p-Xylene ND 5.0 0.63 ug/l
95-47-6 o-Xylene ND 2.5 0.63 ug/l
1330-20-7 Xylene (total)ND 7.5 1.3 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 104%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
18 of 86
FA8448333.3
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Report of Analysis Page 3 of 3
Client Sample ID:MW-4
Lab Sample ID:FA84483-3 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 107%102%70-130%
2037-26-5 Toluene-D8 94%97%70-130%
460-00-4 4-Bromofluorobenzene 102%98%70-130%
(a) Sample vial(s) contained significant headspace; reported results are considered minimum values. Confirmation
run.
(b) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
19 of 86
FA8448333.3
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-5
Lab Sample ID:FA84483-4 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106439.D 2.5 04/08/21 13:52 LR n/a n/a VE2449
Run #2 a E106515.D 1 04/13/21 20:20 LR n/a n/a VE2453
Purge Volume
Run #1 10.0 ml
Run #2 10.0 ml
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 1.3 0.31 ug/l
108-86-1 Bromobenzene ND 1.3 0.31 ug/l
74-97-5 Bromochloromethane ND 1.3 0.31 ug/l
75-27-4 Bromodichloromethane ND 1.3 0.31 ug/l
75-25-2 Bromoform ND 1.3 0.31 ug/l
104-51-8 n-Butylbenzene ND 1.3 0.31 ug/l
135-98-8 sec-Butylbenzene ND 1.3 0.31 ug/l
98-06-6 tert-Butylbenzene ND 1.3 0.31 ug/l
56-23-5 Carbon Tetrachloride ND 1.3 0.31 ug/l
108-90-7 Chlorobenzene ND 1.3 0.31 ug/l
75-00-3 Chloroethane ND 1.3 0.50 ug/l
67-66-3 Chloroform ND 1.3 0.31 ug/l
95-49-8 o-Chlorotoluene ND 1.3 0.31 ug/l
106-43-4 p-Chlorotoluene ND 1.3 0.31 ug/l
124-48-1 Dibromochloromethane ND 1.3 0.31 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 1.3 0.62 ug/l
106-93-4 1,2-Dibromoethane ND 1.3 0.31 ug/l
75-71-8 Dichlorodifluoromethane ND 1.3 0.50 ug/l
95-50-1 1,2-Dichlorobenzene ND 1.3 0.31 ug/l
541-73-1 1,3-Dichlorobenzene ND 1.3 0.31 ug/l
106-46-7 1,4-Dichlorobenzene ND 1.3 0.31 ug/l
75-34-3 1,1-Dichloroethane ND 1.3 0.31 ug/l
107-06-2 1,2-Dichloroethane ND 1.3 0.31 ug/l
75-35-4 1,1-Dichloroethylene ND 1.3 0.31 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 1.3 0.31 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 1.3 0.31 ug/l
78-87-5 1,2-Dichloropropane ND 1.3 0.31 ug/l
142-28-9 1,3-Dichloropropane ND 1.3 0.31 ug/l
594-20-7 2,2-Dichloropropane ND 1.3 0.31 ug/l
563-58-6 1,1-Dichloropropene ND 1.3 0.31 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 1.3 0.31 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 1.3 0.31 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
20 of 86
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Report of Analysis Page 2 of 3
Client Sample ID:MW-5
Lab Sample ID:FA84483-4 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether ND 1.3 0.31 ug/l
64-17-5 Ethyl Alcohol b ND 250 160 ug/l
100-41-4 Ethylbenzene ND 1.3 0.31 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 1.3 0.31 ug/l
87-68-3 Hexachlorobutadiene ND 1.3 0.31 ug/l
98-82-8 Isopropylbenzene ND 1.3 0.31 ug/l
99-87-6 p-Isopropyltoluene ND 1.3 0.31 ug/l
74-83-9 Methyl Bromide ND 1.3 0.50 ug/l
74-87-3 Methyl Chloride ND 1.3 0.50 ug/l
74-95-3 Methylene Bromide ND 1.3 0.31 ug/l
75-09-2 Methylene Chloride ND 5.0 2.5 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 1.3 0.31 ug/l
91-20-3 Naphthalene ND 1.3 0.31 ug/l
103-65-1 n-Propylbenzene ND 1.3 0.31 ug/l
100-42-5 Styrene ND 1.3 0.31 ug/l
75-85-4 Tert-Amyl Alcohol ND 25 5.0 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 2.5 0.50 ug/l
75-65-0 Tert-Butyl Alcohol ND 25 5.0 ug/l
762-75-4 Tert-Butyl Formate ND 25 5.0 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 1.3 0.31 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 1.3 0.31 ug/l
127-18-4 Tetrachloroethylene ND 1.3 0.31 ug/l
108-88-3 Toluene ND 1.3 0.31 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 1.3 0.31 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 1.3 0.31 ug/l
71-55-6 1,1,1-Trichloroethane ND 1.3 0.31 ug/l
79-00-5 1,1,2-Trichloroethane ND 1.3 0.31 ug/l
79-01-6 Trichloroethylene ND 1.3 0.31 ug/l
75-69-4 Trichlorofluoromethane ND 1.3 0.50 ug/l
96-18-4 1,2,3-Trichloropropane ND 1.3 0.31 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 1.3 0.31 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 1.3 0.31 ug/l
75-01-4 Vinyl Chloride ND 1.3 0.31 ug/l
m,p-Xylene ND 2.5 0.31 ug/l
95-47-6 o-Xylene ND 1.3 0.31 ug/l
1330-20-7 Xylene (total)ND 3.8 0.63 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 105%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
21 of 86
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Report of Analysis Page 3 of 3
Client Sample ID:MW-5
Lab Sample ID:FA84483-4 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 108%102%70-130%
2037-26-5 Toluene-D8 95%100%70-130%
460-00-4 4-Bromofluorobenzene 101%99%70-130%
(a) Sample vial(s) contained significant headspace; reported results are considered minimum values. Confirmation
run.
(b) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
22 of 86
FA8448333.4
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-6
Lab Sample ID:FA84483-5 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106440.D 5 04/08/21 14:15 LR n/a n/a VE2449
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 2.5 0.63 ug/l
108-86-1 Bromobenzene ND 2.5 0.63 ug/l
74-97-5 Bromochloromethane ND 2.5 0.63 ug/l
75-27-4 Bromodichloromethane ND 2.5 0.63 ug/l
75-25-2 Bromoform ND 2.5 0.63 ug/l
104-51-8 n-Butylbenzene ND 2.5 0.63 ug/l
135-98-8 sec-Butylbenzene ND 2.5 0.63 ug/l
98-06-6 tert-Butylbenzene ND 2.5 0.63 ug/l
56-23-5 Carbon Tetrachloride ND 2.5 0.63 ug/l
108-90-7 Chlorobenzene ND 2.5 0.63 ug/l
75-00-3 Chloroethane ND 2.5 1.0 ug/l
67-66-3 Chloroform ND 2.5 0.63 ug/l
95-49-8 o-Chlorotoluene ND 2.5 0.63 ug/l
106-43-4 p-Chlorotoluene ND 2.5 0.63 ug/l
124-48-1 Dibromochloromethane ND 2.5 0.63 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 2.5 1.2 ug/l
106-93-4 1,2-Dibromoethane ND 2.5 0.63 ug/l
75-71-8 Dichlorodifluoromethane ND 2.5 1.0 ug/l
95-50-1 1,2-Dichlorobenzene ND 2.5 0.63 ug/l
541-73-1 1,3-Dichlorobenzene ND 2.5 0.63 ug/l
106-46-7 1,4-Dichlorobenzene ND 2.5 0.63 ug/l
75-34-3 1,1-Dichloroethane ND 2.5 0.63 ug/l
107-06-2 1,2-Dichloroethane 3.3 2.5 0.63 ug/l
75-35-4 1,1-Dichloroethylene ND 2.5 0.63 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 2.5 0.63 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 2.5 0.63 ug/l
78-87-5 1,2-Dichloropropane ND 2.5 0.63 ug/l
142-28-9 1,3-Dichloropropane ND 2.5 0.63 ug/l
594-20-7 2,2-Dichloropropane ND 2.5 0.63 ug/l
563-58-6 1,1-Dichloropropene ND 2.5 0.63 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 2.5 0.63 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 2.5 0.63 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
23 of 86
FA8448333.5
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-6
Lab Sample ID:FA84483-5 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 8.7 2.5 0.63 ug/l
64-17-5 Ethyl Alcohol a ND 500 330 ug/l
100-41-4 Ethylbenzene ND 2.5 0.63 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 2.5 0.63 ug/l
87-68-3 Hexachlorobutadiene ND 2.5 0.63 ug/l
98-82-8 Isopropylbenzene ND 2.5 0.63 ug/l
99-87-6 p-Isopropyltoluene ND 2.5 0.63 ug/l
74-83-9 Methyl Bromide ND 2.5 1.0 ug/l
74-87-3 Methyl Chloride ND 2.5 1.0 ug/l
74-95-3 Methylene Bromide ND 2.5 0.63 ug/l
75-09-2 Methylene Chloride ND 10 5.0 ug/l
1634-04-4 Methyl Tert Butyl Ether 55.4 2.5 0.63 ug/l
91-20-3 Naphthalene ND 2.5 0.63 ug/l
103-65-1 n-Propylbenzene ND 2.5 0.63 ug/l
100-42-5 Styrene ND 2.5 0.63 ug/l
75-85-4 Tert-Amyl Alcohol 33.8 50 10 ug/l J
994-05-8 Tert-Amyl Methyl Ether ND 5.0 1.0 ug/l
75-65-0 Tert-Butyl Alcohol ND 50 10 ug/l
762-75-4 Tert-Butyl Formate ND 50 10 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 2.5 0.63 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 2.5 0.63 ug/l
127-18-4 Tetrachloroethylene ND 2.5 0.63 ug/l
108-88-3 Toluene ND 2.5 0.63 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 2.5 0.63 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 2.5 0.63 ug/l
71-55-6 1,1,1-Trichloroethane ND 2.5 0.63 ug/l
79-00-5 1,1,2-Trichloroethane ND 2.5 0.63 ug/l
79-01-6 Trichloroethylene ND 2.5 0.63 ug/l
75-69-4 Trichlorofluoromethane ND 2.5 1.0 ug/l
96-18-4 1,2,3-Trichloropropane ND 2.5 0.63 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 2.5 0.63 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 2.5 0.63 ug/l
75-01-4 Vinyl Chloride ND 2.5 0.63 ug/l
m,p-Xylene ND 5.0 0.63 ug/l
95-47-6 o-Xylene ND 2.5 0.63 ug/l
1330-20-7 Xylene (total)ND 7.5 1.3 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 106%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
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-6
Lab Sample ID:FA84483-5 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 112%70-130%
2037-26-5 Toluene-D8 94%70-130%
460-00-4 4-Bromofluorobenzene 102%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
25 of 86
FA8448333.5
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-7
Lab Sample ID:FA84483-6 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106449.D 5 04/08/21 17:47 LR n/a n/a VE2449
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 122 2.5 0.63 ug/l
108-86-1 Bromobenzene ND 2.5 0.63 ug/l
74-97-5 Bromochloromethane ND 2.5 0.63 ug/l
75-27-4 Bromodichloromethane ND 2.5 0.63 ug/l
75-25-2 Bromoform ND 2.5 0.63 ug/l
104-51-8 n-Butylbenzene 2.6 2.5 0.63 ug/l
135-98-8 sec-Butylbenzene 3.6 2.5 0.63 ug/l
98-06-6 tert-Butylbenzene ND 2.5 0.63 ug/l
56-23-5 Carbon Tetrachloride ND 2.5 0.63 ug/l
108-90-7 Chlorobenzene ND 2.5 0.63 ug/l
75-00-3 Chloroethane ND 2.5 1.0 ug/l
67-66-3 Chloroform ND 2.5 0.63 ug/l
95-49-8 o-Chlorotoluene ND 2.5 0.63 ug/l
106-43-4 p-Chlorotoluene ND 2.5 0.63 ug/l
124-48-1 Dibromochloromethane ND 2.5 0.63 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 2.5 1.2 ug/l
106-93-4 1,2-Dibromoethane ND 2.5 0.63 ug/l
75-71-8 Dichlorodifluoromethane ND 2.5 1.0 ug/l
95-50-1 1,2-Dichlorobenzene ND 2.5 0.63 ug/l
541-73-1 1,3-Dichlorobenzene ND 2.5 0.63 ug/l
106-46-7 1,4-Dichlorobenzene ND 2.5 0.63 ug/l
75-34-3 1,1-Dichloroethane ND 2.5 0.63 ug/l
107-06-2 1,2-Dichloroethane ND 2.5 0.63 ug/l
75-35-4 1,1-Dichloroethylene ND 2.5 0.63 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 2.5 0.63 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 2.5 0.63 ug/l
78-87-5 1,2-Dichloropropane ND 2.5 0.63 ug/l
142-28-9 1,3-Dichloropropane ND 2.5 0.63 ug/l
594-20-7 2,2-Dichloropropane ND 2.5 0.63 ug/l
563-58-6 1,1-Dichloropropene ND 2.5 0.63 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 2.5 0.63 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 2.5 0.63 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
26 of 86
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SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-7
Lab Sample ID:FA84483-6 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 1.5 2.5 0.63 ug/l J
64-17-5 Ethyl Alcohol a ND 500 330 ug/l
100-41-4 Ethylbenzene 49.3 2.5 0.63 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 2.5 0.63 ug/l
87-68-3 Hexachlorobutadiene 2.2 2.5 0.63 ug/l J
98-82-8 Isopropylbenzene 10.9 2.5 0.63 ug/l
99-87-6 p-Isopropyltoluene 0.84 2.5 0.63 ug/l J
74-83-9 Methyl Bromide ND 2.5 1.0 ug/l
74-87-3 Methyl Chloride ND 2.5 1.0 ug/l
74-95-3 Methylene Bromide ND 2.5 0.63 ug/l
75-09-2 Methylene Chloride ND 10 5.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 2.5 0.63 ug/l
91-20-3 Naphthalene 11.3 2.5 0.63 ug/l
103-65-1 n-Propylbenzene 7.5 2.5 0.63 ug/l
100-42-5 Styrene ND 2.5 0.63 ug/l
75-85-4 Tert-Amyl Alcohol 256 50 10 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 5.0 1.0 ug/l
75-65-0 Tert-Butyl Alcohol ND 50 10 ug/l
762-75-4 Tert-Butyl Formate ND 50 10 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 2.5 0.63 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 2.5 0.63 ug/l
127-18-4 Tetrachloroethylene ND 2.5 0.63 ug/l
108-88-3 Toluene 113 2.5 0.63 ug/l
87-61-6 1,2,3-Trichlorobenzene 0.93 2.5 0.63 ug/l J
120-82-1 1,2,4-Trichlorobenzene 0.75 2.5 0.63 ug/l J
71-55-6 1,1,1-Trichloroethane ND 2.5 0.63 ug/l
79-00-5 1,1,2-Trichloroethane ND 2.5 0.63 ug/l
79-01-6 Trichloroethylene ND 2.5 0.63 ug/l
75-69-4 Trichlorofluoromethane ND 2.5 1.0 ug/l
96-18-4 1,2,3-Trichloropropane ND 2.5 0.63 ug/l
95-63-6 1,2,4-Trimethylbenzene 14.7 2.5 0.63 ug/l
108-67-8 1,3,5-Trimethylbenzene 4.1 2.5 0.63 ug/l
75-01-4 Vinyl Chloride ND 2.5 0.63 ug/l
m,p-Xylene 79.7 5.0 0.63 ug/l
95-47-6 o-Xylene 32.7 2.5 0.63 ug/l
1330-20-7 Xylene (total)112 7.5 1.3 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 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
27 of 86
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-7
Lab Sample ID:FA84483-6 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 100%70-130%
2037-26-5 Toluene-D8 93%70-130%
460-00-4 4-Bromofluorobenzene 99%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
28 of 86
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Report of Analysis Page 1 of 3
Client Sample ID:MW-8
Lab Sample ID:FA84483-7 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106450.D 2.5 04/08/21 18:09 LR n/a n/a VE2449
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 13.9 1.3 0.31 ug/l
108-86-1 Bromobenzene ND 1.3 0.31 ug/l
74-97-5 Bromochloromethane ND 1.3 0.31 ug/l
75-27-4 Bromodichloromethane ND 1.3 0.31 ug/l
75-25-2 Bromoform ND 1.3 0.31 ug/l
104-51-8 n-Butylbenzene 1.2 1.3 0.31 ug/l J
135-98-8 sec-Butylbenzene 2.8 1.3 0.31 ug/l
98-06-6 tert-Butylbenzene 2.0 1.3 0.31 ug/l
56-23-5 Carbon Tetrachloride ND 1.3 0.31 ug/l
108-90-7 Chlorobenzene ND 1.3 0.31 ug/l
75-00-3 Chloroethane ND 1.3 0.50 ug/l
67-66-3 Chloroform ND 1.3 0.31 ug/l
95-49-8 o-Chlorotoluene ND 1.3 0.31 ug/l
106-43-4 p-Chlorotoluene ND 1.3 0.31 ug/l
124-48-1 Dibromochloromethane ND 1.3 0.31 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 1.3 0.62 ug/l
106-93-4 1,2-Dibromoethane ND 1.3 0.31 ug/l
75-71-8 Dichlorodifluoromethane ND 1.3 0.50 ug/l
95-50-1 1,2-Dichlorobenzene ND 1.3 0.31 ug/l
541-73-1 1,3-Dichlorobenzene ND 1.3 0.31 ug/l
106-46-7 1,4-Dichlorobenzene ND 1.3 0.31 ug/l
75-34-3 1,1-Dichloroethane ND 1.3 0.31 ug/l
107-06-2 1,2-Dichloroethane 4.4 1.3 0.31 ug/l
75-35-4 1,1-Dichloroethylene ND 1.3 0.31 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 1.3 0.31 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 1.3 0.31 ug/l
78-87-5 1,2-Dichloropropane ND 1.3 0.31 ug/l
142-28-9 1,3-Dichloropropane ND 1.3 0.31 ug/l
594-20-7 2,2-Dichloropropane ND 1.3 0.31 ug/l
563-58-6 1,1-Dichloropropene ND 1.3 0.31 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 1.3 0.31 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 1.3 0.31 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
29 of 86
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Client Sample ID:MW-8
Lab Sample ID:FA84483-7 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 8.0 1.3 0.31 ug/l
64-17-5 Ethyl Alcohol a ND 250 160 ug/l
100-41-4 Ethylbenzene 34.1 1.3 0.31 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 1.3 0.31 ug/l
87-68-3 Hexachlorobutadiene ND 1.3 0.31 ug/l
98-82-8 Isopropylbenzene 9.5 1.3 0.31 ug/l
99-87-6 p-Isopropyltoluene 1.8 1.3 0.31 ug/l
74-83-9 Methyl Bromide ND 1.3 0.50 ug/l
74-87-3 Methyl Chloride 1.1 1.3 0.50 ug/l J
74-95-3 Methylene Bromide ND 1.3 0.31 ug/l
75-09-2 Methylene Chloride ND 5.0 2.5 ug/l
1634-04-4 Methyl Tert Butyl Ether 72.4 1.3 0.31 ug/l
91-20-3 Naphthalene 34.2 1.3 0.31 ug/l
103-65-1 n-Propylbenzene 7.6 1.3 0.31 ug/l
100-42-5 Styrene ND 1.3 0.31 ug/l
75-85-4 Tert-Amyl Alcohol 151 25 5.0 ug/l
994-05-8 Tert-Amyl Methyl Ether 1.6 2.5 0.50 ug/l J
75-65-0 Tert-Butyl Alcohol ND 25 5.0 ug/l
762-75-4 Tert-Butyl Formate ND 25 5.0 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 1.3 0.31 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 1.3 0.31 ug/l
127-18-4 Tetrachloroethylene ND 1.3 0.31 ug/l
108-88-3 Toluene ND 1.3 0.31 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 1.3 0.31 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 1.3 0.31 ug/l
71-55-6 1,1,1-Trichloroethane ND 1.3 0.31 ug/l
79-00-5 1,1,2-Trichloroethane ND 1.3 0.31 ug/l
79-01-6 Trichloroethylene ND 1.3 0.31 ug/l
75-69-4 Trichlorofluoromethane ND 1.3 0.50 ug/l
96-18-4 1,2,3-Trichloropropane ND 1.3 0.31 ug/l
95-63-6 1,2,4-Trimethylbenzene 10.2 1.3 0.31 ug/l
108-67-8 1,3,5-Trimethylbenzene 0.67 1.3 0.31 ug/l J
75-01-4 Vinyl Chloride ND 1.3 0.31 ug/l
m,p-Xylene 7.8 2.5 0.31 ug/l
95-47-6 o-Xylene 0.83 1.3 0.31 ug/l J
1330-20-7 Xylene (total)8.7 3.8 0.63 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 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
30 of 86
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Report of Analysis Page 3 of 3
Client Sample ID:MW-8
Lab Sample ID:FA84483-7 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 101%70-130%
2037-26-5 Toluene-D8 92%70-130%
460-00-4 4-Bromofluorobenzene 101%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
31 of 86
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Report of Analysis Page 1 of 3
Client Sample ID:MW-9
Lab Sample ID:FA84483-8 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106451.D 5 04/08/21 18:33 LR n/a n/a VE2449
Run #2 a E106511.D 1 04/13/21 18:47 LR n/a n/a VE2453
Purge Volume
Run #1 10.0 ml
Run #2 10.0 ml
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 2.5 0.63 ug/l
108-86-1 Bromobenzene ND 2.5 0.63 ug/l
74-97-5 Bromochloromethane ND 2.5 0.63 ug/l
75-27-4 Bromodichloromethane ND 2.5 0.63 ug/l
75-25-2 Bromoform ND 2.5 0.63 ug/l
104-51-8 n-Butylbenzene ND 2.5 0.63 ug/l
135-98-8 sec-Butylbenzene ND 2.5 0.63 ug/l
98-06-6 tert-Butylbenzene ND 2.5 0.63 ug/l
56-23-5 Carbon Tetrachloride ND 2.5 0.63 ug/l
108-90-7 Chlorobenzene ND 2.5 0.63 ug/l
75-00-3 Chloroethane ND 2.5 1.0 ug/l
67-66-3 Chloroform 2.2 2.5 0.63 ug/l J
95-49-8 o-Chlorotoluene ND 2.5 0.63 ug/l
106-43-4 p-Chlorotoluene ND 2.5 0.63 ug/l
124-48-1 Dibromochloromethane ND 2.5 0.63 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 2.5 1.2 ug/l
106-93-4 1,2-Dibromoethane ND 2.5 0.63 ug/l
75-71-8 Dichlorodifluoromethane ND 2.5 1.0 ug/l
95-50-1 1,2-Dichlorobenzene ND 2.5 0.63 ug/l
541-73-1 1,3-Dichlorobenzene ND 2.5 0.63 ug/l
106-46-7 1,4-Dichlorobenzene ND 2.5 0.63 ug/l
75-34-3 1,1-Dichloroethane ND 2.5 0.63 ug/l
107-06-2 1,2-Dichloroethane ND 2.5 0.63 ug/l
75-35-4 1,1-Dichloroethylene ND 2.5 0.63 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 2.5 0.63 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 2.5 0.63 ug/l
78-87-5 1,2-Dichloropropane ND 2.5 0.63 ug/l
142-28-9 1,3-Dichloropropane ND 2.5 0.63 ug/l
594-20-7 2,2-Dichloropropane ND 2.5 0.63 ug/l
563-58-6 1,1-Dichloropropene ND 2.5 0.63 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 2.5 0.63 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 2.5 0.63 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
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Report of Analysis Page 2 of 3
Client Sample ID:MW-9
Lab Sample ID:FA84483-8 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether ND 2.5 0.63 ug/l
64-17-5 Ethyl Alcohol b ND 500 330 ug/l
100-41-4 Ethylbenzene ND 2.5 0.63 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 2.5 0.63 ug/l
87-68-3 Hexachlorobutadiene 0.84 2.5 0.63 ug/l J
98-82-8 Isopropylbenzene ND 2.5 0.63 ug/l
99-87-6 p-Isopropyltoluene ND 2.5 0.63 ug/l
74-83-9 Methyl Bromide ND 2.5 1.0 ug/l
74-87-3 Methyl Chloride ND 2.5 1.0 ug/l
74-95-3 Methylene Bromide ND 2.5 0.63 ug/l
75-09-2 Methylene Chloride ND 10 5.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 2.5 0.63 ug/l
91-20-3 Naphthalene c 0.69 2.5 0.63 ug/l J
103-65-1 n-Propylbenzene ND 2.5 0.63 ug/l
100-42-5 Styrene ND 2.5 0.63 ug/l
75-85-4 Tert-Amyl Alcohol ND 50 10 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 5.0 1.0 ug/l
75-65-0 Tert-Butyl Alcohol ND 50 10 ug/l
762-75-4 Tert-Butyl Formate ND 50 10 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 2.5 0.63 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 2.5 0.63 ug/l
127-18-4 Tetrachloroethylene ND 2.5 0.63 ug/l
108-88-3 Toluene ND 2.5 0.63 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 2.5 0.63 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 2.5 0.63 ug/l
71-55-6 1,1,1-Trichloroethane ND 2.5 0.63 ug/l
79-00-5 1,1,2-Trichloroethane ND 2.5 0.63 ug/l
79-01-6 Trichloroethylene ND 2.5 0.63 ug/l
75-69-4 Trichlorofluoromethane ND 2.5 1.0 ug/l
96-18-4 1,2,3-Trichloropropane ND 2.5 0.63 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 2.5 0.63 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 2.5 0.63 ug/l
75-01-4 Vinyl Chloride ND 2.5 0.63 ug/l
m,p-Xylene ND 5.0 0.63 ug/l
95-47-6 o-Xylene ND 2.5 0.63 ug/l
1330-20-7 Xylene (total)ND 7.5 1.3 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 103%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
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Report of Analysis Page 3 of 3
Client Sample ID:MW-9
Lab Sample ID:FA84483-8 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 97%101%70-130%
2037-26-5 Toluene-D8 95%99%70-130%
460-00-4 4-Bromofluorobenzene 96%101%70-130%
(a) Sample vial(s) contained significant headspace; reported results are considered minimum values. Confirmation
run.
(b) Associated BS recovery outside control limits high; however sample is ND.
(c) Suspected carry-over.
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
34 of 86
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SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-12
Lab Sample ID:FA84483-9 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106452.D 2 04/08/21 18:56 LR n/a n/a VE2449
Run #2 a E106512.D 1 04/13/21 19:10 LR n/a n/a VE2453
Purge Volume
Run #1 10.0 ml
Run #2 10.0 ml
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 1.0 0.25 ug/l
108-86-1 Bromobenzene ND 1.0 0.25 ug/l
74-97-5 Bromochloromethane ND 1.0 0.25 ug/l
75-27-4 Bromodichloromethane ND 1.0 0.25 ug/l
75-25-2 Bromoform ND 1.0 0.25 ug/l
104-51-8 n-Butylbenzene ND 1.0 0.25 ug/l
135-98-8 sec-Butylbenzene ND 1.0 0.25 ug/l
98-06-6 tert-Butylbenzene ND 1.0 0.25 ug/l
56-23-5 Carbon Tetrachloride ND 1.0 0.25 ug/l
108-90-7 Chlorobenzene ND 1.0 0.25 ug/l
75-00-3 Chloroethane ND 1.0 0.40 ug/l
67-66-3 Chloroform ND 1.0 0.25 ug/l
95-49-8 o-Chlorotoluene ND 1.0 0.25 ug/l
106-43-4 p-Chlorotoluene ND 1.0 0.25 ug/l
124-48-1 Dibromochloromethane ND 1.0 0.25 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 1.0 0.49 ug/l
106-93-4 1,2-Dibromoethane ND 1.0 0.25 ug/l
75-71-8 Dichlorodifluoromethane ND 1.0 0.40 ug/l
95-50-1 1,2-Dichlorobenzene ND 1.0 0.25 ug/l
541-73-1 1,3-Dichlorobenzene ND 1.0 0.25 ug/l
106-46-7 1,4-Dichlorobenzene ND 1.0 0.25 ug/l
75-34-3 1,1-Dichloroethane ND 1.0 0.25 ug/l
107-06-2 1,2-Dichloroethane ND 1.0 0.25 ug/l
75-35-4 1,1-Dichloroethylene ND 1.0 0.25 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 1.0 0.25 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 1.0 0.25 ug/l
78-87-5 1,2-Dichloropropane ND 1.0 0.25 ug/l
142-28-9 1,3-Dichloropropane ND 1.0 0.25 ug/l
594-20-7 2,2-Dichloropropane ND 1.0 0.25 ug/l
563-58-6 1,1-Dichloropropene ND 1.0 0.25 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 1.0 0.25 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 1.0 0.25 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
35 of 86
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SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-12
Lab Sample ID:FA84483-9 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether ND 1.0 0.25 ug/l
64-17-5 Ethyl Alcohol b ND 200 130 ug/l
100-41-4 Ethylbenzene ND 1.0 0.25 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 1.0 0.25 ug/l
87-68-3 Hexachlorobutadiene ND 1.0 0.25 ug/l
98-82-8 Isopropylbenzene ND 1.0 0.25 ug/l
99-87-6 p-Isopropyltoluene ND 1.0 0.25 ug/l
74-83-9 Methyl Bromide ND 1.0 0.40 ug/l
74-87-3 Methyl Chloride ND 1.0 0.40 ug/l
74-95-3 Methylene Bromide ND 1.0 0.25 ug/l
75-09-2 Methylene Chloride ND 4.0 2.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 1.0 0.25 ug/l
91-20-3 Naphthalene ND 1.0 0.25 ug/l
103-65-1 n-Propylbenzene ND 1.0 0.25 ug/l
100-42-5 Styrene ND 1.0 0.25 ug/l
75-85-4 Tert-Amyl Alcohol ND 20 4.0 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 2.0 0.40 ug/l
75-65-0 Tert-Butyl Alcohol ND 20 4.0 ug/l
762-75-4 Tert-Butyl Formate ND 20 4.0 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 0.25 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 0.25 ug/l
127-18-4 Tetrachloroethylene ND 1.0 0.25 ug/l
108-88-3 Toluene ND 1.0 0.25 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 1.0 0.25 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 1.0 0.25 ug/l
71-55-6 1,1,1-Trichloroethane ND 1.0 0.25 ug/l
79-00-5 1,1,2-Trichloroethane ND 1.0 0.25 ug/l
79-01-6 Trichloroethylene ND 1.0 0.25 ug/l
75-69-4 Trichlorofluoromethane ND 1.0 0.40 ug/l
96-18-4 1,2,3-Trichloropropane ND 1.0 0.25 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 1.0 0.25 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 1.0 0.25 ug/l
75-01-4 Vinyl Chloride ND 1.0 0.25 ug/l
m,p-Xylene ND 2.0 0.25 ug/l
95-47-6 o-Xylene ND 1.0 0.25 ug/l
1330-20-7 Xylene (total)ND 3.0 0.50 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 102%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
36 of 86
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW-12
Lab Sample ID:FA84483-9 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 97%101%70-130%
2037-26-5 Toluene-D8 94%100%70-130%
460-00-4 4-Bromofluorobenzene 99%97%70-130%
(a) Sample vial(s) contained significant headspace; reported results are considered minimum values. Confirmation
run.
(b) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
37 of 86
FA8448333.9
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW-13
Lab Sample ID:FA84483-10 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106456.D 1 04/08/21 20:30 LR n/a n/a VE2449
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 0.50 0.13 ug/l
108-86-1 Bromobenzene ND 0.50 0.13 ug/l
74-97-5 Bromochloromethane ND 0.50 0.13 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.13 ug/l
75-25-2 Bromoform ND 0.50 0.13 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.13 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.13 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.13 ug/l
56-23-5 Carbon Tetrachloride ND 0.50 0.13 ug/l
108-90-7 Chlorobenzene ND 0.50 0.13 ug/l
75-00-3 Chloroethane ND 0.50 0.20 ug/l
67-66-3 Chloroform ND 0.50 0.13 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.13 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.13 ug/l
124-48-1 Dibromochloromethane ND 0.50 0.13 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.25 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.13 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.20 ug/l
95-50-1 1,2-Dichlorobenzene ND 0.50 0.13 ug/l
541-73-1 1,3-Dichlorobenzene ND 0.50 0.13 ug/l
106-46-7 1,4-Dichlorobenzene ND 0.50 0.13 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.13 ug/l
107-06-2 1,2-Dichloroethane ND 0.50 0.13 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.13 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.13 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.13 ug/l
78-87-5 1,2-Dichloropropane ND 0.50 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.13 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.13 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.13 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.50 0.13 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.50 0.13 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
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SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW-13
Lab Sample ID:FA84483-10 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether ND 0.50 0.13 ug/l
64-17-5 Ethyl Alcohol a ND 100 65 ug/l
100-41-4 Ethylbenzene ND 0.50 0.13 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 0.50 0.13 ug/l
87-68-3 Hexachlorobutadiene ND 0.50 0.13 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 0.20 ug/l
74-87-3 Methyl Chloride ND 0.50 0.20 ug/l
74-95-3 Methylene Bromide ND 0.50 0.13 ug/l
75-09-2 Methylene Chloride ND 2.0 1.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.13 ug/l
91-20-3 Naphthalene ND 0.50 0.13 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.13 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
75-85-4 Tert-Amyl Alcohol ND 10 2.0 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 1.0 0.20 ug/l
75-65-0 Tert-Butyl Alcohol ND 10 2.0 ug/l
762-75-4 Tert-Butyl Formate ND 10 2.0 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.13 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.50 0.13 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.13 ug/l
108-88-3 Toluene ND 0.50 0.13 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.13 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.13 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.13 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.50 0.13 ug/l
79-01-6 Trichloroethylene ND 0.50 0.13 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.20 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.13 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.13 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.13 ug/l
75-01-4 Vinyl Chloride ND 0.50 0.13 ug/l
m,p-Xylene ND 1.0 0.13 ug/l
95-47-6 o-Xylene ND 0.50 0.13 ug/l
1330-20-7 Xylene (total)ND 1.5 0.25 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 104%70-130%
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
39 of 86
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Report of Analysis Page 3 of 3
Client Sample ID:MW-13
Lab Sample ID:FA84483-10 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 104%70-130%
2037-26-5 Toluene-D8 91%70-130%
460-00-4 4-Bromofluorobenzene 101%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
40 of 86
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SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:DW-1
Lab Sample ID:FA84483-11 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106453.D 50 04/08/21 19:20 LR n/a n/a VE2449
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 486 25 6.3 ug/l
108-86-1 Bromobenzene ND 25 6.3 ug/l
74-97-5 Bromochloromethane ND 25 6.3 ug/l
75-27-4 Bromodichloromethane ND 25 6.3 ug/l
75-25-2 Bromoform ND 25 6.3 ug/l
104-51-8 n-Butylbenzene ND 25 6.3 ug/l
135-98-8 sec-Butylbenzene ND 25 6.3 ug/l
98-06-6 tert-Butylbenzene ND 25 6.3 ug/l
56-23-5 Carbon Tetrachloride ND 25 6.3 ug/l
108-90-7 Chlorobenzene ND 25 6.3 ug/l
75-00-3 Chloroethane ND 25 10 ug/l
67-66-3 Chloroform ND 25 6.3 ug/l
95-49-8 o-Chlorotoluene ND 25 6.3 ug/l
106-43-4 p-Chlorotoluene ND 25 6.3 ug/l
124-48-1 Dibromochloromethane ND 25 6.3 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 25 12 ug/l
106-93-4 1,2-Dibromoethane ND 25 6.3 ug/l
75-71-8 Dichlorodifluoromethane ND 25 10 ug/l
95-50-1 1,2-Dichlorobenzene ND 25 6.3 ug/l
541-73-1 1,3-Dichlorobenzene ND 25 6.3 ug/l
106-46-7 1,4-Dichlorobenzene ND 25 6.3 ug/l
75-34-3 1,1-Dichloroethane ND 25 6.3 ug/l
107-06-2 1,2-Dichloroethane ND 25 6.3 ug/l
75-35-4 1,1-Dichloroethylene ND 25 6.3 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 25 6.3 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 25 6.3 ug/l
78-87-5 1,2-Dichloropropane ND 25 6.3 ug/l
142-28-9 1,3-Dichloropropane ND 25 6.3 ug/l
594-20-7 2,2-Dichloropropane ND 25 6.3 ug/l
563-58-6 1,1-Dichloropropene ND 25 6.3 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 25 6.3 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 25 6.3 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
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Report of Analysis Page 2 of 3
Client Sample ID:DW-1
Lab Sample ID:FA84483-11 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 92.2 25 6.3 ug/l
64-17-5 Ethyl Alcohol a ND 5000 3300 ug/l
100-41-4 Ethylbenzene 7.9 25 6.3 ug/l J
637-92-3 Ethyl Tert Butyl Ether ND 25 6.3 ug/l
87-68-3 Hexachlorobutadiene ND 25 6.3 ug/l
98-82-8 Isopropylbenzene ND 25 6.3 ug/l
99-87-6 p-Isopropyltoluene ND 25 6.3 ug/l
74-83-9 Methyl Bromide ND 25 10 ug/l
74-87-3 Methyl Chloride ND 25 10 ug/l
74-95-3 Methylene Bromide ND 25 6.3 ug/l
75-09-2 Methylene Chloride ND 100 50 ug/l
1634-04-4 Methyl Tert Butyl Ether 1490 25 6.3 ug/l
91-20-3 Naphthalene ND 25 6.3 ug/l
103-65-1 n-Propylbenzene ND 25 6.3 ug/l
100-42-5 Styrene ND 25 6.3 ug/l
75-85-4 Tert-Amyl Alcohol 1570 500 100 ug/l
994-05-8 Tert-Amyl Methyl Ether 35.3 50 10 ug/l J
75-65-0 Tert-Butyl Alcohol ND 500 100 ug/l
762-75-4 Tert-Butyl Formate ND 500 100 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 25 6.3 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 25 6.3 ug/l
127-18-4 Tetrachloroethylene ND 25 6.3 ug/l
108-88-3 Toluene 10.5 25 6.3 ug/l J
87-61-6 1,2,3-Trichlorobenzene ND 25 6.3 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 25 6.3 ug/l
71-55-6 1,1,1-Trichloroethane ND 25 6.3 ug/l
79-00-5 1,1,2-Trichloroethane ND 25 6.3 ug/l
79-01-6 Trichloroethylene ND 25 6.3 ug/l
75-69-4 Trichlorofluoromethane ND 25 10 ug/l
96-18-4 1,2,3-Trichloropropane ND 25 6.3 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 25 6.3 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 25 6.3 ug/l
75-01-4 Vinyl Chloride ND 25 6.3 ug/l
m,p-Xylene ND 50 6.3 ug/l
95-47-6 o-Xylene ND 25 6.3 ug/l
1330-20-7 Xylene (total)ND 75 13 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 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
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:DW-1
Lab Sample ID:FA84483-11 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 99%70-130%
2037-26-5 Toluene-D8 95%70-130%
460-00-4 4-Bromofluorobenzene 101%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
43 of 86
FA8448333.11
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:RW-1
Lab Sample ID:FA84483-12 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 E106454.D 500 04/08/21 19:43 LR n/a n/a VE2449
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 7660 250 63 ug/l
108-86-1 Bromobenzene ND 250 63 ug/l
74-97-5 Bromochloromethane ND 250 63 ug/l
75-27-4 Bromodichloromethane ND 250 63 ug/l
75-25-2 Bromoform ND 250 63 ug/l
104-51-8 n-Butylbenzene ND 250 63 ug/l
135-98-8 sec-Butylbenzene ND 250 63 ug/l
98-06-6 tert-Butylbenzene ND 250 63 ug/l
56-23-5 Carbon Tetrachloride ND 250 63 ug/l
108-90-7 Chlorobenzene ND 250 63 ug/l
75-00-3 Chloroethane ND 250 100 ug/l
67-66-3 Chloroform ND 250 63 ug/l
95-49-8 o-Chlorotoluene ND 250 63 ug/l
106-43-4 p-Chlorotoluene ND 250 63 ug/l
124-48-1 Dibromochloromethane ND 250 63 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 250 120 ug/l
106-93-4 1,2-Dibromoethane ND 250 63 ug/l
75-71-8 Dichlorodifluoromethane ND 250 100 ug/l
95-50-1 1,2-Dichlorobenzene ND 250 63 ug/l
541-73-1 1,3-Dichlorobenzene ND 250 63 ug/l
106-46-7 1,4-Dichlorobenzene ND 250 63 ug/l
75-34-3 1,1-Dichloroethane ND 250 63 ug/l
107-06-2 1,2-Dichloroethane ND 250 63 ug/l
75-35-4 1,1-Dichloroethylene ND 250 63 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 250 63 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 250 63 ug/l
78-87-5 1,2-Dichloropropane ND 250 63 ug/l
142-28-9 1,3-Dichloropropane ND 250 63 ug/l
594-20-7 2,2-Dichloropropane ND 250 63 ug/l
563-58-6 1,1-Dichloropropene ND 250 63 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 250 63 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 250 63 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
44 of 86
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SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:RW-1
Lab Sample ID:FA84483-12 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 73.0 250 63 ug/l J
64-17-5 Ethyl Alcohol a ND 50000 33000 ug/l
100-41-4 Ethylbenzene 1950 250 63 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 250 63 ug/l
87-68-3 Hexachlorobutadiene ND 250 63 ug/l
98-82-8 Isopropylbenzene 101 250 63 ug/l J
99-87-6 p-Isopropyltoluene ND 250 63 ug/l
74-83-9 Methyl Bromide ND 250 100 ug/l
74-87-3 Methyl Chloride ND 250 100 ug/l
74-95-3 Methylene Bromide ND 250 63 ug/l
75-09-2 Methylene Chloride ND 1000 500 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 250 63 ug/l
91-20-3 Naphthalene 784 250 63 ug/l
103-65-1 n-Propylbenzene 345 250 63 ug/l
100-42-5 Styrene ND 250 63 ug/l
75-85-4 Tert-Amyl Alcohol ND 5000 1000 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 500 100 ug/l
75-65-0 Tert-Butyl Alcohol ND 5000 1000 ug/l
762-75-4 Tert-Butyl Formate ND 5000 1000 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 250 63 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 250 63 ug/l
127-18-4 Tetrachloroethylene ND 250 63 ug/l
108-88-3 Toluene 19500 250 63 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 250 63 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 250 63 ug/l
71-55-6 1,1,1-Trichloroethane ND 250 63 ug/l
79-00-5 1,1,2-Trichloroethane ND 250 63 ug/l
79-01-6 Trichloroethylene ND 250 63 ug/l
75-69-4 Trichlorofluoromethane ND 250 100 ug/l
96-18-4 1,2,3-Trichloropropane ND 250 63 ug/l
95-63-6 1,2,4-Trimethylbenzene 4230 250 63 ug/l
108-67-8 1,3,5-Trimethylbenzene 1020 250 63 ug/l
75-01-4 Vinyl Chloride ND 250 63 ug/l
m,p-Xylene 8120 500 63 ug/l
95-47-6 o-Xylene 4470 250 63 ug/l
1330-20-7 Xylene (total)12600 750 130 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 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
45 of 86
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:RW-1
Lab Sample ID:FA84483-12 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 101%70-130%
2037-26-5 Toluene-D8 95%70-130%
460-00-4 4-Bromofluorobenzene 100%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
46 of 86
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SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:RW-2
Lab Sample ID:FA84483-13 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0225854.D 200 04/14/21 15:32 LR n/a n/a VA2878
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 947 100 25 ug/l
108-86-1 Bromobenzene ND 100 25 ug/l
74-97-5 Bromochloromethane ND 100 25 ug/l
75-27-4 Bromodichloromethane ND 100 25 ug/l
75-25-2 Bromoform ND 100 25 ug/l
104-51-8 n-Butylbenzene ND 100 25 ug/l
135-98-8 sec-Butylbenzene ND 100 25 ug/l
98-06-6 tert-Butylbenzene ND 100 25 ug/l
56-23-5 Carbon Tetrachloride ND 100 25 ug/l
108-90-7 Chlorobenzene ND 100 25 ug/l
75-00-3 Chloroethane ND 100 40 ug/l
67-66-3 Chloroform ND 100 25 ug/l
95-49-8 o-Chlorotoluene ND 100 25 ug/l
106-43-4 p-Chlorotoluene ND 100 25 ug/l
124-48-1 Dibromochloromethane ND 100 25 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 100 49 ug/l
106-93-4 1,2-Dibromoethane ND 100 25 ug/l
75-71-8 Dichlorodifluoromethane ND 100 40 ug/l
95-50-1 1,2-Dichlorobenzene ND 100 25 ug/l
541-73-1 1,3-Dichlorobenzene ND 100 25 ug/l
106-46-7 1,4-Dichlorobenzene ND 100 25 ug/l
75-34-3 1,1-Dichloroethane ND 100 25 ug/l
107-06-2 1,2-Dichloroethane ND 100 25 ug/l
75-35-4 1,1-Dichloroethylene ND 100 25 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 100 25 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 100 25 ug/l
78-87-5 1,2-Dichloropropane ND 100 25 ug/l
142-28-9 1,3-Dichloropropane ND 100 25 ug/l
594-20-7 2,2-Dichloropropane ND 100 25 ug/l
563-58-6 1,1-Dichloropropene ND 100 25 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 100 25 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 100 25 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
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SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:RW-2
Lab Sample ID:FA84483-13 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether ND 100 25 ug/l
64-17-5 Ethyl Alcohol a ND 20000 13000 ug/l
100-41-4 Ethylbenzene 1340 100 25 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 100 25 ug/l
87-68-3 Hexachlorobutadiene ND 100 25 ug/l
98-82-8 Isopropylbenzene 68.4 100 25 ug/l J
99-87-6 p-Isopropyltoluene ND 100 25 ug/l
74-83-9 Methyl Bromide ND 100 40 ug/l
74-87-3 Methyl Chloride ND 100 40 ug/l
74-95-3 Methylene Bromide ND 100 25 ug/l
75-09-2 Methylene Chloride ND 400 200 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 100 25 ug/l
91-20-3 Naphthalene 596 100 25 ug/l
103-65-1 n-Propylbenzene 190 100 25 ug/l
100-42-5 Styrene ND 100 25 ug/l
75-85-4 Tert-Amyl Alcohol b 778 2000 400 ug/l J
994-05-8 Tert-Amyl Methyl Ether ND 200 40 ug/l
75-65-0 Tert-Butyl Alcohol ND 2000 400 ug/l
762-75-4 Tert-Butyl Formate ND 2000 400 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 100 25 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 100 25 ug/l
127-18-4 Tetrachloroethylene ND 100 25 ug/l
108-88-3 Toluene 5600 100 25 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 100 25 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 100 25 ug/l
71-55-6 1,1,1-Trichloroethane ND 100 25 ug/l
79-00-5 1,1,2-Trichloroethane ND 100 25 ug/l
79-01-6 Trichloroethylene ND 100 25 ug/l
75-69-4 Trichlorofluoromethane ND 100 40 ug/l
96-18-4 1,2,3-Trichloropropane ND 100 25 ug/l
95-63-6 1,2,4-Trimethylbenzene 2660 100 25 ug/l
108-67-8 1,3,5-Trimethylbenzene 787 100 25 ug/l
75-01-4 Vinyl Chloride ND 100 25 ug/l
m,p-Xylene 5860 200 25 ug/l
95-47-6 o-Xylene 3170 100 25 ug/l
1330-20-7 Xylene (total)9030 300 50 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 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
48 of 86
FA8448333.13
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:RW-2
Lab Sample ID:FA84483-13 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 101%70-130%
2037-26-5 Toluene-D8 99%70-130%
460-00-4 4-Bromofluorobenzene 98%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
(b) Associated BS recovery outside control limits high.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
49 of 86
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Report of Analysis Page 1 of 3
Client Sample ID:OW-1
Lab Sample ID:FA84483-14 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0225855.D 100 04/14/21 15:56 LR n/a n/a VA2878
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 2940 50 13 ug/l
108-86-1 Bromobenzene ND 50 13 ug/l
74-97-5 Bromochloromethane ND 50 13 ug/l
75-27-4 Bromodichloromethane ND 50 13 ug/l
75-25-2 Bromoform ND 50 13 ug/l
104-51-8 n-Butylbenzene ND 50 13 ug/l
135-98-8 sec-Butylbenzene ND 50 13 ug/l
98-06-6 tert-Butylbenzene ND 50 13 ug/l
56-23-5 Carbon Tetrachloride ND 50 13 ug/l
108-90-7 Chlorobenzene ND 50 13 ug/l
75-00-3 Chloroethane ND 50 20 ug/l
67-66-3 Chloroform ND 50 13 ug/l
95-49-8 o-Chlorotoluene ND 50 13 ug/l
106-43-4 p-Chlorotoluene ND 50 13 ug/l
124-48-1 Dibromochloromethane ND 50 13 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 50 25 ug/l
106-93-4 1,2-Dibromoethane ND 50 13 ug/l
75-71-8 Dichlorodifluoromethane ND 50 20 ug/l
95-50-1 1,2-Dichlorobenzene ND 50 13 ug/l
541-73-1 1,3-Dichlorobenzene ND 50 13 ug/l
106-46-7 1,4-Dichlorobenzene ND 50 13 ug/l
75-34-3 1,1-Dichloroethane ND 50 13 ug/l
107-06-2 1,2-Dichloroethane ND 50 13 ug/l
75-35-4 1,1-Dichloroethylene ND 50 13 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 50 13 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 50 13 ug/l
78-87-5 1,2-Dichloropropane ND 50 13 ug/l
142-28-9 1,3-Dichloropropane ND 50 13 ug/l
594-20-7 2,2-Dichloropropane ND 50 13 ug/l
563-58-6 1,1-Dichloropropene ND 50 13 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 50 13 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 50 13 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
50 of 86
FA8448333.14
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:OW-1
Lab Sample ID:FA84483-14 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 121 50 13 ug/l
64-17-5 Ethyl Alcohol a ND 10000 6500 ug/l
100-41-4 Ethylbenzene 381 50 13 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 50 13 ug/l
87-68-3 Hexachlorobutadiene ND 50 13 ug/l
98-82-8 Isopropylbenzene 62.7 50 13 ug/l
99-87-6 p-Isopropyltoluene ND 50 13 ug/l
74-83-9 Methyl Bromide ND 50 20 ug/l
74-87-3 Methyl Chloride ND 50 20 ug/l
74-95-3 Methylene Bromide ND 50 13 ug/l
75-09-2 Methylene Chloride ND 200 100 ug/l
1634-04-4 Methyl Tert Butyl Ether 1140 50 13 ug/l
91-20-3 Naphthalene 294 50 13 ug/l
103-65-1 n-Propylbenzene 125 50 13 ug/l
100-42-5 Styrene ND 50 13 ug/l
75-85-4 Tert-Amyl Alcohol b 1020 1000 200 ug/l
994-05-8 Tert-Amyl Methyl Ether 73.8 100 20 ug/l J
75-65-0 Tert-Butyl Alcohol ND 1000 200 ug/l
762-75-4 Tert-Butyl Formate ND 1000 200 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 50 13 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 50 13 ug/l
127-18-4 Tetrachloroethylene ND 50 13 ug/l
108-88-3 Toluene 2180 50 13 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 50 13 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 50 13 ug/l
71-55-6 1,1,1-Trichloroethane ND 50 13 ug/l
79-00-5 1,1,2-Trichloroethane ND 50 13 ug/l
79-01-6 Trichloroethylene ND 50 13 ug/l
75-69-4 Trichlorofluoromethane ND 50 20 ug/l
96-18-4 1,2,3-Trichloropropane ND 50 13 ug/l
95-63-6 1,2,4-Trimethylbenzene 687 50 13 ug/l
108-67-8 1,3,5-Trimethylbenzene 113 50 13 ug/l
75-01-4 Vinyl Chloride ND 50 13 ug/l
m,p-Xylene 764 100 13 ug/l
95-47-6 o-Xylene 290 50 13 ug/l
1330-20-7 Xylene (total)1050 150 25 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 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
51 of 86
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:OW-1
Lab Sample ID:FA84483-14 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 101%70-130%
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 99%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
(b) Associated BS recovery outside control limits high.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
52 of 86
FA8448333.14
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:OW-2
Lab Sample ID:FA84483-15 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0225861.D 20 04/14/21 18:21 LR n/a n/a VA2878
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 405 10 2.5 ug/l
108-86-1 Bromobenzene ND 10 2.5 ug/l
74-97-5 Bromochloromethane ND 10 2.5 ug/l
75-27-4 Bromodichloromethane ND 10 2.5 ug/l
75-25-2 Bromoform ND 10 2.5 ug/l
104-51-8 n-Butylbenzene 10.7 10 2.5 ug/l
135-98-8 sec-Butylbenzene 11.7 10 2.5 ug/l
98-06-6 tert-Butylbenzene 4.1 10 2.5 ug/l J
56-23-5 Carbon Tetrachloride ND 10 2.5 ug/l
108-90-7 Chlorobenzene ND 10 2.5 ug/l
75-00-3 Chloroethane ND 10 4.0 ug/l
67-66-3 Chloroform ND 10 2.5 ug/l
95-49-8 o-Chlorotoluene ND 10 2.5 ug/l
106-43-4 p-Chlorotoluene ND 10 2.5 ug/l
124-48-1 Dibromochloromethane ND 10 2.5 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 10 4.9 ug/l
106-93-4 1,2-Dibromoethane ND 10 2.5 ug/l
75-71-8 Dichlorodifluoromethane ND 10 4.0 ug/l
95-50-1 1,2-Dichlorobenzene ND 10 2.5 ug/l
541-73-1 1,3-Dichlorobenzene ND 10 2.5 ug/l
106-46-7 1,4-Dichlorobenzene ND 10 2.5 ug/l
75-34-3 1,1-Dichloroethane ND 10 2.5 ug/l
107-06-2 1,2-Dichloroethane ND 10 2.5 ug/l
75-35-4 1,1-Dichloroethylene ND 10 2.5 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 10 2.5 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 10 2.5 ug/l
78-87-5 1,2-Dichloropropane ND 10 2.5 ug/l
142-28-9 1,3-Dichloropropane ND 10 2.5 ug/l
594-20-7 2,2-Dichloropropane ND 10 2.5 ug/l
563-58-6 1,1-Dichloropropene ND 10 2.5 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 10 2.5 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 10 2.5 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
53 of 86
FA8448333.15
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:OW-2
Lab Sample ID:FA84483-15 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 5.5 10 2.5 ug/l J
64-17-5 Ethyl Alcohol a ND 2000 1300 ug/l
100-41-4 Ethylbenzene 383 10 2.5 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 10 2.5 ug/l
87-68-3 Hexachlorobutadiene ND 10 2.5 ug/l
98-82-8 Isopropylbenzene 88.2 10 2.5 ug/l
99-87-6 p-Isopropyltoluene 15.6 10 2.5 ug/l
74-83-9 Methyl Bromide ND 10 4.0 ug/l
74-87-3 Methyl Chloride ND 10 4.0 ug/l
74-95-3 Methylene Bromide ND 10 2.5 ug/l
75-09-2 Methylene Chloride ND 40 20 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 10 2.5 ug/l
91-20-3 Naphthalene 434 10 2.5 ug/l
103-65-1 n-Propylbenzene 111 10 2.5 ug/l
100-42-5 Styrene ND 10 2.5 ug/l
75-85-4 Tert-Amyl Alcohol b 294 200 40 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 20 4.0 ug/l
75-65-0 Tert-Butyl Alcohol ND 200 40 ug/l
762-75-4 Tert-Butyl Formate ND 200 40 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 10 2.5 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 10 2.5 ug/l
127-18-4 Tetrachloroethylene ND 10 2.5 ug/l
108-88-3 Toluene 36.4 10 2.5 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 10 2.5 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 10 2.5 ug/l
71-55-6 1,1,1-Trichloroethane ND 10 2.5 ug/l
79-00-5 1,1,2-Trichloroethane ND 10 2.5 ug/l
79-01-6 Trichloroethylene ND 10 2.5 ug/l
75-69-4 Trichlorofluoromethane ND 10 4.0 ug/l
96-18-4 1,2,3-Trichloropropane ND 10 2.5 ug/l
95-63-6 1,2,4-Trimethylbenzene 124 10 2.5 ug/l
108-67-8 1,3,5-Trimethylbenzene 51.6 10 2.5 ug/l
75-01-4 Vinyl Chloride ND 10 2.5 ug/l
m,p-Xylene 122 20 2.5 ug/l
95-47-6 o-Xylene 35.2 10 2.5 ug/l
1330-20-7 Xylene (total)157 30 5.0 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 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
54 of 86
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:OW-2
Lab Sample ID:FA84483-15 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 104%70-130%
2037-26-5 Toluene-D8 98%70-130%
460-00-4 4-Bromofluorobenzene 98%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
(b) Associated BS recovery outside control limits high.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
55 of 86
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SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:OW-3
Lab Sample ID:FA84483-16 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0225856.D 2 04/14/21 16:20 LR n/a n/a VA2878
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene 3.0 1.0 0.25 ug/l
108-86-1 Bromobenzene ND 1.0 0.25 ug/l
74-97-5 Bromochloromethane ND 1.0 0.25 ug/l
75-27-4 Bromodichloromethane ND 1.0 0.25 ug/l
75-25-2 Bromoform ND 1.0 0.25 ug/l
104-51-8 n-Butylbenzene ND 1.0 0.25 ug/l
135-98-8 sec-Butylbenzene ND 1.0 0.25 ug/l
98-06-6 tert-Butylbenzene ND 1.0 0.25 ug/l
56-23-5 Carbon Tetrachloride ND 1.0 0.25 ug/l
108-90-7 Chlorobenzene ND 1.0 0.25 ug/l
75-00-3 Chloroethane ND 1.0 0.40 ug/l
67-66-3 Chloroform 0.48 1.0 0.25 ug/l J
95-49-8 o-Chlorotoluene ND 1.0 0.25 ug/l
106-43-4 p-Chlorotoluene ND 1.0 0.25 ug/l
124-48-1 Dibromochloromethane ND 1.0 0.25 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 1.0 0.49 ug/l
106-93-4 1,2-Dibromoethane ND 1.0 0.25 ug/l
75-71-8 Dichlorodifluoromethane ND 1.0 0.40 ug/l
95-50-1 1,2-Dichlorobenzene ND 1.0 0.25 ug/l
541-73-1 1,3-Dichlorobenzene ND 1.0 0.25 ug/l
106-46-7 1,4-Dichlorobenzene ND 1.0 0.25 ug/l
75-34-3 1,1-Dichloroethane ND 1.0 0.25 ug/l
107-06-2 1,2-Dichloroethane 9.9 1.0 0.25 ug/l
75-35-4 1,1-Dichloroethylene ND 1.0 0.25 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 1.0 0.25 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 1.0 0.25 ug/l
78-87-5 1,2-Dichloropropane ND 1.0 0.25 ug/l
142-28-9 1,3-Dichloropropane ND 1.0 0.25 ug/l
594-20-7 2,2-Dichloropropane ND 1.0 0.25 ug/l
563-58-6 1,1-Dichloropropene ND 1.0 0.25 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 1.0 0.25 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 1.0 0.25 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
56 of 86
FA8448333.16
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:OW-3
Lab Sample ID:FA84483-16 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 10.2 1.0 0.25 ug/l
64-17-5 Ethyl Alcohol a ND 200 130 ug/l
100-41-4 Ethylbenzene ND 1.0 0.25 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 1.0 0.25 ug/l
87-68-3 Hexachlorobutadiene ND 1.0 0.25 ug/l
98-82-8 Isopropylbenzene 0.28 1.0 0.25 ug/l J
99-87-6 p-Isopropyltoluene ND 1.0 0.25 ug/l
74-83-9 Methyl Bromide ND 1.0 0.40 ug/l
74-87-3 Methyl Chloride ND 1.0 0.40 ug/l
74-95-3 Methylene Bromide ND 1.0 0.25 ug/l
75-09-2 Methylene Chloride ND 4.0 2.0 ug/l
1634-04-4 Methyl Tert Butyl Ether 82.2 1.0 0.25 ug/l
91-20-3 Naphthalene ND 1.0 0.25 ug/l
103-65-1 n-Propylbenzene ND 1.0 0.25 ug/l
100-42-5 Styrene ND 1.0 0.25 ug/l
75-85-4 Tert-Amyl Alcohol b 667 20 4.0 ug/l
994-05-8 Tert-Amyl Methyl Ether 0.91 2.0 0.40 ug/l J
75-65-0 Tert-Butyl Alcohol 140 20 4.0 ug/l
762-75-4 Tert-Butyl Formate ND 20 4.0 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 0.25 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 0.25 ug/l
127-18-4 Tetrachloroethylene ND 1.0 0.25 ug/l
108-88-3 Toluene ND 1.0 0.25 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 1.0 0.25 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 1.0 0.25 ug/l
71-55-6 1,1,1-Trichloroethane ND 1.0 0.25 ug/l
79-00-5 1,1,2-Trichloroethane ND 1.0 0.25 ug/l
79-01-6 Trichloroethylene ND 1.0 0.25 ug/l
75-69-4 Trichlorofluoromethane ND 1.0 0.40 ug/l
96-18-4 1,2,3-Trichloropropane ND 1.0 0.25 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 1.0 0.25 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 1.0 0.25 ug/l
75-01-4 Vinyl Chloride ND 1.0 0.25 ug/l
m,p-Xylene ND 2.0 0.25 ug/l
95-47-6 o-Xylene ND 1.0 0.25 ug/l
1330-20-7 Xylene (total)ND 3.0 0.50 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 101%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
57 of 86
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SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:OW-3
Lab Sample ID:FA84483-16 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 107%70-130%
2037-26-5 Toluene-D8 96%70-130%
460-00-4 4-Bromofluorobenzene 97%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
(b) Associated BS recovery outside control limits high.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
58 of 86
FA8448333.16
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:AS-1
Lab Sample ID:FA84483-17 Date Sampled:04/06/21
Matrix:AQ - Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0225857.D 250 04/14/21 16:44 LR n/a n/a VA2878
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 130 31 ug/l
108-86-1 Bromobenzene ND 130 31 ug/l
74-97-5 Bromochloromethane ND 130 31 ug/l
75-27-4 Bromodichloromethane ND 130 31 ug/l
75-25-2 Bromoform ND 130 31 ug/l
104-51-8 n-Butylbenzene ND 130 31 ug/l
135-98-8 sec-Butylbenzene ND 130 31 ug/l
98-06-6 tert-Butylbenzene ND 130 31 ug/l
56-23-5 Carbon Tetrachloride ND 130 31 ug/l
108-90-7 Chlorobenzene ND 130 31 ug/l
75-00-3 Chloroethane ND 130 50 ug/l
67-66-3 Chloroform 59.2 130 31 ug/l J
95-49-8 o-Chlorotoluene ND 130 31 ug/l
106-43-4 p-Chlorotoluene ND 130 31 ug/l
124-48-1 Dibromochloromethane ND 130 31 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 130 62 ug/l
106-93-4 1,2-Dibromoethane ND 130 31 ug/l
75-71-8 Dichlorodifluoromethane ND 130 50 ug/l
95-50-1 1,2-Dichlorobenzene ND 130 31 ug/l
541-73-1 1,3-Dichlorobenzene ND 130 31 ug/l
106-46-7 1,4-Dichlorobenzene ND 130 31 ug/l
75-34-3 1,1-Dichloroethane ND 130 31 ug/l
107-06-2 1,2-Dichloroethane ND 130 31 ug/l
75-35-4 1,1-Dichloroethylene ND 130 31 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 130 31 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 130 31 ug/l
78-87-5 1,2-Dichloropropane ND 130 31 ug/l
142-28-9 1,3-Dichloropropane ND 130 31 ug/l
594-20-7 2,2-Dichloropropane ND 130 31 ug/l
563-58-6 1,1-Dichloropropene ND 130 31 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 130 31 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 130 31 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
59 of 86
FA8448333.17
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:AS-1
Lab Sample ID:FA84483-17 Date Sampled:04/06/21
Matrix:AQ - Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Compound Result RL MDL Units Q
108-20-3 Di-Isopropyl Ether 515 130 31 ug/l
64-17-5 Ethyl Alcohol a ND 25000 16000 ug/l
100-41-4 Ethylbenzene ND 130 31 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 130 31 ug/l
87-68-3 Hexachlorobutadiene ND 130 31 ug/l
98-82-8 Isopropylbenzene ND 130 31 ug/l
99-87-6 p-Isopropyltoluene ND 130 31 ug/l
74-83-9 Methyl Bromide ND 130 50 ug/l
74-87-3 Methyl Chloride ND 130 50 ug/l
74-95-3 Methylene Bromide ND 130 31 ug/l
75-09-2 Methylene Chloride ND 500 250 ug/l
1634-04-4 Methyl Tert Butyl Ether 6870 130 31 ug/l
91-20-3 Naphthalene ND 130 31 ug/l
103-65-1 n-Propylbenzene ND 130 31 ug/l
100-42-5 Styrene ND 130 31 ug/l
75-85-4 Tert-Amyl Alcohol b 5090 2500 500 ug/l
994-05-8 Tert-Amyl Methyl Ether 319 250 50 ug/l
75-65-0 Tert-Butyl Alcohol ND 2500 500 ug/l
762-75-4 Tert-Butyl Formate ND 2500 500 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 130 31 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 130 31 ug/l
127-18-4 Tetrachloroethylene ND 130 31 ug/l
108-88-3 Toluene ND 130 31 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 130 31 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 130 31 ug/l
71-55-6 1,1,1-Trichloroethane ND 130 31 ug/l
79-00-5 1,1,2-Trichloroethane ND 130 31 ug/l
79-01-6 Trichloroethylene ND 130 31 ug/l
75-69-4 Trichlorofluoromethane ND 130 50 ug/l
96-18-4 1,2,3-Trichloropropane ND 130 31 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 130 31 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 130 31 ug/l
75-01-4 Vinyl Chloride ND 130 31 ug/l
m,p-Xylene ND 250 31 ug/l
95-47-6 o-Xylene ND 130 31 ug/l
1330-20-7 Xylene (total)ND 380 63 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 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
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FA8448333.17
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:AS-1
Lab Sample ID:FA84483-17 Date Sampled:04/06/21
Matrix:AQ - Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
VOA 6200B List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 102%70-130%
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 99%70-130%
(a) Associated BS recovery outside control limits high; however sample is ND.
(b) Associated BS recovery outside control limits high.
ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
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SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:WSW-1/D-1
Lab Sample ID:FA84483-18 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0225869.D 20 04/14/21 21:34 LR n/a n/a VA2878
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
Purgeable Aromatics, Full List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 10 2.5 ug/l
108-90-7 Chlorobenzene ND 10 2.5 ug/l
95-50-1 1,2-Dichlorobenzene ND 10 2.5 ug/l
541-73-1 1,3-Dichlorobenzene ND 10 2.5 ug/l
106-46-7 1,4-Dichlorobenzene ND 10 2.5 ug/l
108-20-3 Di-Isopropyl Ether 50.1 10 2.5 ug/l
100-41-4 Ethylbenzene ND 10 2.5 ug/l
1634-04-4 Methyl Tert Butyl Ether 620 10 2.5 ug/l
91-20-3 Naphthalene ND 10 2.5 ug/l
108-88-3 Toluene ND 10 2.5 ug/l
1330-20-7 Xylene (total)ND 30 5.0 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 101%70-130%
17060-07-0 1,2-Dichloroethane-D4 103%70-130%
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 97%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
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FA8448333.18
SGS North America Inc.
Report of Analysis Page 1 of 1
Client Sample ID:WSW-1/D-2
Lab Sample ID:FA84483-19 Date Sampled:04/06/21
Matrix:AQ - Ground Water Date Received:04/07/21
Method:SM 6200B Percent Solids:n/a
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0225860.D 1 04/14/21 17:57 LR n/a n/a VA2878
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
Purgeable Aromatics, Full List
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 0.50 0.13 ug/l
108-90-7 Chlorobenzene ND 0.50 0.13 ug/l
95-50-1 1,2-Dichlorobenzene ND 0.50 0.13 ug/l
541-73-1 1,3-Dichlorobenzene ND 0.50 0.13 ug/l
106-46-7 1,4-Dichlorobenzene ND 0.50 0.13 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.13 ug/l
100-41-4 Ethylbenzene ND 0.50 0.13 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.13 ug/l
91-20-3 Naphthalene ND 0.50 0.13 ug/l
108-88-3 Toluene ND 0.50 0.13 ug/l
1330-20-7 Xylene (total)ND 1.5 0.25 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
1868-53-7 Dibromofluoromethane 101%70-130%
17060-07-0 1,2-Dichloroethane-D4 103%70-130%
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 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
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FA8448333.19
SGS North America Inc.
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
• Chain of Custody
Orlando, FL
Section 4
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FA844834
FA84483: Chain of Custody
Page 1 of 3
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FA8448344.1
FA84483: Chain of Custody
Page 2 of 3
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FA8448344.1
Job Number:FA84483 Client:GRI
Date / Time Received:4/7/2021 9:45:00 AM Delivery Method:FED EX
Project:TWIN ROADS MOBIL
Airbill #'s:
Cooler Information
1. Custody Seals Present
2. Custody Seals Intact
4. Cooler temp verification
3. Temp criteria achieved
5. Cooler media
IR Gun
Ice (Bag)
Trip Blank Information
1. Trip Blank present / cooler
2. Trip Blank listed on COC
2. Samples preserved properly
Sample Information
1. Sample labels present on bottles
5. Sample recvd within HT
4. Condition of sample
3. Sufficient volume/containers recvd for analysis:
Intact
Comments
SM001Rev. Date 05/24/17
SGS Sample Receipt Summary
Cooler Temps (Raw Measured) °C:
Cooler Temps (Corrected) °C:
Cooler 1: (4.0);
Cooler 1: (2.2);
3. Type Of TB Received
W or S N/A
6. Dates/Times/IDs on COC match Sample Label
7. VOCs have headspace
8. Bottles received for unspecified tests
9. Compositing instructions clear
10. Voa Soil Kits/Jars received past 48hrs?
11. % Solids Jar received?
Misc. Information
25-Gram 5-GramNumber of Encores:Number of 5035 Field Kits:Number of Lab Filtered Metals:
Test Strip Lot #s:pH 0-3 230315 pH 10-12 219813A Other: (Specify)
Y or N N/A
Y or N
Therm ID:IR 1; Therm CF:-1.8; # of Coolers:1
Y or N N/A
12. Residual Chlorine Present?
Residual Chlorine Test Strip Lot #:
Technician:Reviewer:NATHANS Date:Date:4/7/2021 9:45:00 AM
FA84483: Chain of Custody
Page 3 of 3
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SGS North America Inc.
MS Volatiles
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Blank Spike Summaries
• Matrix Spike and Duplicate Summaries
Orlando, FL
Section 5
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FA844835
Method Blank Summary Page 1 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2449-MB E106432.D 1 04/08/21 LR n/a n/a VE2449
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-1, FA84483-2, FA84483-3, FA84483-4, FA84483-5, FA84483-6, FA84483-7, FA84483-8, FA84483-9,
FA84483-10, FA84483-11, FA84483-12
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 0.50 0.13 ug/l
108-86-1 Bromobenzene ND 0.50 0.13 ug/l
74-97-5 Bromochloromethane ND 0.50 0.13 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.13 ug/l
75-25-2 Bromoform ND 0.50 0.13 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.13 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.13 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.13 ug/l
56-23-5 Carbon Tetrachloride ND 0.50 0.13 ug/l
108-90-7 Chlorobenzene ND 0.50 0.13 ug/l
75-00-3 Chloroethane ND 0.50 0.20 ug/l
67-66-3 Chloroform ND 0.50 0.13 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.13 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.13 ug/l
124-48-1 Dibromochloromethane ND 0.50 0.13 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.25 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.13 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.20 ug/l
95-50-1 1,2-Dichlorobenzene ND 0.50 0.13 ug/l
541-73-1 1,3-Dichlorobenzene ND 0.50 0.13 ug/l
106-46-7 1,4-Dichlorobenzene ND 0.50 0.13 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.13 ug/l
107-06-2 1,2-Dichloroethane ND 0.50 0.13 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.13 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.13 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.13 ug/l
78-87-5 1,2-Dichloropropane ND 0.50 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.13 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.13 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.13 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.50 0.13 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.50 0.13 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.13 ug/l
64-17-5 Ethyl Alcohol ND 100 65 ug/l
100-41-4 Ethylbenzene ND 0.50 0.13 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 0.50 0.13 ug/l
69 of 86
FA8448355.1.1
Method Blank Summary Page 2 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2449-MB E106432.D 1 04/08/21 LR n/a n/a VE2449
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-1, FA84483-2, FA84483-3, FA84483-4, FA84483-5, FA84483-6, FA84483-7, FA84483-8, FA84483-9,
FA84483-10, FA84483-11, FA84483-12
CAS No.Compound Result RL MDL Units Q
87-68-3 Hexachlorobutadiene ND 0.50 0.13 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 0.20 ug/l
74-87-3 Methyl Chloride ND 0.50 0.20 ug/l
74-95-3 Methylene Bromide ND 0.50 0.13 ug/l
75-09-2 Methylene Chloride ND 2.0 1.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.13 ug/l
91-20-3 Naphthalene ND 0.50 0.13 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.13 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
75-85-4 Tert-Amyl Alcohol ND 10 2.0 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 1.0 0.20 ug/l
75-65-0 Tert-Butyl Alcohol ND 10 2.0 ug/l
762-75-4 Tert-Butyl Formate ND 10 2.0 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.13 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.50 0.13 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.13 ug/l
108-88-3 Toluene ND 0.50 0.13 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.13 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.13 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.13 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.50 0.13 ug/l
79-01-6 Trichloroethylene ND 0.50 0.13 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.20 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.13 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.13 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.13 ug/l
75-01-4 Vinyl Chloride ND 0.50 0.13 ug/l
m,p-Xylene ND 1.0 0.13 ug/l
95-47-6 o-Xylene ND 0.50 0.13 ug/l
1330-20-7 Xylene (total)ND 1.5 0.25 ug/l
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FA8448355.1.1
Method Blank Summary Page 3 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2449-MB E106432.D 1 04/08/21 LR n/a n/a VE2449
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-1, FA84483-2, FA84483-3, FA84483-4, FA84483-5, FA84483-6, FA84483-7, FA84483-8, FA84483-9,
FA84483-10, FA84483-11, FA84483-12
CAS No.Surrogate Recoveries Limits
1868-53-7 Dibromofluoromethane 102%70-130%
17060-07-0 1,2-Dichloroethane-D4 101%70-130%
2037-26-5 Toluene-D8 95%70-130%
460-00-4 4-Bromofluorobenzene 101%70-130%
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FA8448355.1.1
Method Blank Summary Page 1 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2878-MB A0225851.D 1 04/14/21 LR n/a n/a VA2878
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-13, FA84483-14, FA84483-15, FA84483-16, FA84483-17, FA84483-18, FA84483-19
CAS No.Compound Result RL MDL Units Q
71-43-2 Benzene ND 0.50 0.13 ug/l
108-86-1 Bromobenzene ND 0.50 0.13 ug/l
74-97-5 Bromochloromethane ND 0.50 0.13 ug/l
75-27-4 Bromodichloromethane ND 0.50 0.13 ug/l
75-25-2 Bromoform ND 0.50 0.13 ug/l
104-51-8 n-Butylbenzene ND 0.50 0.13 ug/l
135-98-8 sec-Butylbenzene ND 0.50 0.13 ug/l
98-06-6 tert-Butylbenzene ND 0.50 0.13 ug/l
56-23-5 Carbon Tetrachloride ND 0.50 0.13 ug/l
108-90-7 Chlorobenzene ND 0.50 0.13 ug/l
75-00-3 Chloroethane ND 0.50 0.20 ug/l
67-66-3 Chloroform ND 0.50 0.13 ug/l
95-49-8 o-Chlorotoluene ND 0.50 0.13 ug/l
106-43-4 p-Chlorotoluene ND 0.50 0.13 ug/l
124-48-1 Dibromochloromethane ND 0.50 0.13 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.25 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 0.13 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 0.20 ug/l
95-50-1 1,2-Dichlorobenzene ND 0.50 0.13 ug/l
541-73-1 1,3-Dichlorobenzene ND 0.50 0.13 ug/l
106-46-7 1,4-Dichlorobenzene ND 0.50 0.13 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 0.13 ug/l
107-06-2 1,2-Dichloroethane ND 0.50 0.13 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 0.13 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.13 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.13 ug/l
78-87-5 1,2-Dichloropropane ND 0.50 0.13 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 0.13 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 0.13 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 0.13 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.50 0.13 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.50 0.13 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 0.13 ug/l
64-17-5 Ethyl Alcohol ND 100 65 ug/l
100-41-4 Ethylbenzene ND 0.50 0.13 ug/l
637-92-3 Ethyl Tert Butyl Ether ND 0.50 0.13 ug/l
72 of 86
FA8448355.1.2
Method Blank Summary Page 2 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2878-MB A0225851.D 1 04/14/21 LR n/a n/a VA2878
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-13, FA84483-14, FA84483-15, FA84483-16, FA84483-17, FA84483-18, FA84483-19
CAS No.Compound Result RL MDL Units Q
87-68-3 Hexachlorobutadiene ND 0.50 0.13 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 0.20 ug/l
74-87-3 Methyl Chloride ND 0.50 0.20 ug/l
74-95-3 Methylene Bromide ND 0.50 0.13 ug/l
75-09-2 Methylene Chloride ND 2.0 1.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.13 ug/l
91-20-3 Naphthalene ND 0.50 0.13 ug/l
103-65-1 n-Propylbenzene ND 0.50 0.13 ug/l
100-42-5 Styrene ND 0.50 0.13 ug/l
75-85-4 Tert-Amyl Alcohol ND 10 2.0 ug/l
994-05-8 Tert-Amyl Methyl Ether ND 1.0 0.20 ug/l
75-65-0 Tert-Butyl Alcohol ND 10 2.0 ug/l
762-75-4 Tert-Butyl Formate ND 10 2.0 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.13 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.50 0.13 ug/l
127-18-4 Tetrachloroethylene ND 0.50 0.13 ug/l
108-88-3 Toluene ND 0.50 0.13 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.13 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.13 ug/l
71-55-6 1,1,1-Trichloroethane ND 0.50 0.13 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.50 0.13 ug/l
79-01-6 Trichloroethylene ND 0.50 0.13 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 0.20 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 0.13 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.13 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.13 ug/l
75-01-4 Vinyl Chloride ND 0.50 0.13 ug/l
m,p-Xylene ND 1.0 0.13 ug/l
95-47-6 o-Xylene ND 0.50 0.13 ug/l
1330-20-7 Xylene (total)ND 1.5 0.25 ug/l
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FA8448355.1.2
Method Blank Summary Page 3 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2878-MB A0225851.D 1 04/14/21 LR n/a n/a VA2878
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-13, FA84483-14, FA84483-15, FA84483-16, FA84483-17, FA84483-18, FA84483-19
CAS No.Surrogate Recoveries Limits
1868-53-7 Dibromofluoromethane 101%70-130%
17060-07-0 1,2-Dichloroethane-D4 102%70-130%
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 99%70-130%
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FA8448355.1.2
Blank Spike Summary Page 1 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2449-BS E106430.D 1 04/08/21 LR n/a n/a VE2449
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-1, FA84483-2, FA84483-3, FA84483-4, FA84483-5, FA84483-6, FA84483-7, FA84483-8, FA84483-9,
FA84483-10, FA84483-11, FA84483-12
Spike BSP BSP
CAS No.Compound ug/l ug/l %Limits
71-43-2 Benzene 10 9.7 97 70-130
108-86-1 Bromobenzene 10 10.2 102 70-130
74-97-5 Bromochloromethane 10 9.2 92 70-130
75-27-4 Bromodichloromethane 10 11.2 112 70-130
75-25-2 Bromoform 10 9.6 96 70-130
104-51-8 n-Butylbenzene 10 9.3 93 70-130
135-98-8 sec-Butylbenzene 10 10 100 70-130
98-06-6 tert-Butylbenzene 10 9.6 96 70-130
56-23-5 Carbon Tetrachloride 10 10.4 104 70-130
108-90-7 Chlorobenzene 10 9.7 97 70-130
75-00-3 Chloroethane 10 6.5 65 60-140
67-66-3 Chloroform 10 10.1 101 70-130
95-49-8 o-Chlorotoluene 10 9.9 99 70-130
106-43-4 p-Chlorotoluene 10 10.2 102 70-130
124-48-1 Dibromochloromethane 10 10.4 104 70-130
96-12-8 1,2-Dibromo-3-chloropropane 10 8.6 86 70-130
106-93-4 1,2-Dibromoethane 10 9.9 99 70-130
75-71-8 Dichlorodifluoromethane 10 7.2 72 60-140
95-50-1 1,2-Dichlorobenzene 10 9.7 97 70-130
541-73-1 1,3-Dichlorobenzene 10 10.2 102 70-130
106-46-7 1,4-Dichlorobenzene 10 9.7 97 70-130
75-34-3 1,1-Dichloroethane 10 9.9 99 70-130
107-06-2 1,2-Dichloroethane 10 9.8 98 70-130
75-35-4 1,1-Dichloroethylene 10 8.7 87 70-130
156-59-2 cis-1,2-Dichloroethylene 10 9.9 99 70-130
156-60-5 trans-1,2-Dichloroethylene 10 9.2 92 70-130
78-87-5 1,2-Dichloropropane 10 10.1 101 70-130
142-28-9 1,3-Dichloropropane 10 9.6 96 70-130
594-20-7 2,2-Dichloropropane 10 10.1 101 70-130
563-58-6 1,1-Dichloropropene 10 9.5 95 70-130
10061-01-5 cis-1,3-Dichloropropene 10 10.6 106 70-130
10061-02-6 trans-1,3-Dichloropropene 10 9.4 94 70-130
108-20-3 Di-Isopropyl Ether 10 8.4 84 70-130
64-17-5 Ethyl Alcohol 500 723 145*70-130
100-41-4 Ethylbenzene 10 9.9 99 70-130
637-92-3 Ethyl Tert Butyl Ether 10 8.4 84 70-130
* = Outside of Control Limits.
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Blank Spike Summary Page 2 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2449-BS E106430.D 1 04/08/21 LR n/a n/a VE2449
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-1, FA84483-2, FA84483-3, FA84483-4, FA84483-5, FA84483-6, FA84483-7, FA84483-8, FA84483-9,
FA84483-10, FA84483-11, FA84483-12
Spike BSP BSP
CAS No.Compound ug/l ug/l %Limits
87-68-3 Hexachlorobutadiene 10 10.3 103 70-130
98-82-8 Isopropylbenzene 10 9.7 97 70-130
99-87-6 p-Isopropyltoluene 10 10 100 70-130
74-83-9 Methyl Bromide 10 7.2 72 60-140
74-87-3 Methyl Chloride 10 7.8 78 60-140
74-95-3 Methylene Bromide 10 10.3 103 70-130
75-09-2 Methylene Chloride 10 8.2 82 70-130
1634-04-4 Methyl Tert Butyl Ether 10 8.5 85 70-130
91-20-3 Naphthalene 10 9.1 91 70-130
103-65-1 n-Propylbenzene 10 10 100 70-130
100-42-5 Styrene 10 9.3 93 70-130
75-85-4 Tert-Amyl Alcohol 100 107 107 70-130
994-05-8 Tert-Amyl Methyl Ether 10 9.0 90 70-130
75-65-0 Tert-Butyl Alcohol 100 105 105 70-130
762-75-4 Tert-Butyl Formate 100 74.7 75 70-130
630-20-6 1,1,1,2-Tetrachloroethane 10 10.0 100 70-130
79-34-5 1,1,2,2-Tetrachloroethane 10 9.2 92 70-130
127-18-4 Tetrachloroethylene 10 10.3 103 70-130
108-88-3 Toluene 10 9.3 93 70-130
87-61-6 1,2,3-Trichlorobenzene 10 9.5 95 70-130
120-82-1 1,2,4-Trichlorobenzene 10 9.5 95 70-130
71-55-6 1,1,1-Trichloroethane 10 10.2 102 70-130
79-00-5 1,1,2-Trichloroethane 10 10.1 101 70-130
79-01-6 Trichloroethylene 10 9.7 97 70-130
75-69-4 Trichlorofluoromethane 10 8.8 88 60-140
96-18-4 1,2,3-Trichloropropane 10 9.6 96 70-130
95-63-6 1,2,4-Trimethylbenzene 10 9.2 92 70-130
108-67-8 1,3,5-Trimethylbenzene 10 9.7 97 70-130
75-01-4 Vinyl Chloride 10 7.9 79 60-140
m,p-Xylene 20 20.3 102 70-130
95-47-6 o-Xylene 10 9.9 99 70-130
1330-20-7 Xylene (total)30 30.3 101 70-130
* = Outside of Control Limits.
76 of 86
FA8448355.2.1
Blank Spike Summary Page 3 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VE2449-BS E106430.D 1 04/08/21 LR n/a n/a VE2449
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-1, FA84483-2, FA84483-3, FA84483-4, FA84483-5, FA84483-6, FA84483-7, FA84483-8, FA84483-9,
FA84483-10, FA84483-11, FA84483-12
CAS No.Surrogate Recoveries BSP Limits
1868-53-7 Dibromofluoromethane 103%70-130%
17060-07-0 1,2-Dichloroethane-D4 105%70-130%
2037-26-5 Toluene-D8 95%70-130%
460-00-4 4-Bromofluorobenzene 100%70-130%
* = Outside of Control Limits.
77 of 86
FA8448355.2.1
Blank Spike Summary Page 1 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2878-BS A0225849.D 1 04/14/21 LR n/a n/a VA2878
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-13, FA84483-14, FA84483-15, FA84483-16, FA84483-17, FA84483-18, FA84483-19
Spike BSP BSP
CAS No.Compound ug/l ug/l %Limits
71-43-2 Benzene 10 11.4 114 70-130
108-86-1 Bromobenzene 10 11.3 113 70-130
74-97-5 Bromochloromethane 10 11.0 110 70-130
75-27-4 Bromodichloromethane 10 11.9 119 70-130
75-25-2 Bromoform 10 11.9 119 70-130
104-51-8 n-Butylbenzene 10 11.2 112 70-130
135-98-8 sec-Butylbenzene 10 11.9 119 70-130
98-06-6 tert-Butylbenzene 10 11.4 114 70-130
56-23-5 Carbon Tetrachloride 10 12.7 127 70-130
108-90-7 Chlorobenzene 10 11.1 111 70-130
75-00-3 Chloroethane 10 11.5 115 60-140
67-66-3 Chloroform 10 11.2 112 70-130
95-49-8 o-Chlorotoluene 10 11.1 111 70-130
106-43-4 p-Chlorotoluene 10 11.1 111 70-130
124-48-1 Dibromochloromethane 10 11.6 116 70-130
96-12-8 1,2-Dibromo-3-chloropropane 10 10.8 108 70-130
106-93-4 1,2-Dibromoethane 10 10.9 109 70-130
75-71-8 Dichlorodifluoromethane 10 9.4 94 60-140
95-50-1 1,2-Dichlorobenzene 10 11.1 111 70-130
541-73-1 1,3-Dichlorobenzene 10 11.3 113 70-130
106-46-7 1,4-Dichlorobenzene 10 10.9 109 70-130
75-34-3 1,1-Dichloroethane 10 12.1 121 70-130
107-06-2 1,2-Dichloroethane 10 11.1 111 70-130
75-35-4 1,1-Dichloroethylene 10 12.2 122 70-130
156-59-2 cis-1,2-Dichloroethylene 10 11.6 116 70-130
156-60-5 trans-1,2-Dichloroethylene 10 12.0 120 70-130
78-87-5 1,2-Dichloropropane 10 10.9 109 70-130
142-28-9 1,3-Dichloropropane 10 10.8 108 70-130
594-20-7 2,2-Dichloropropane 10 11.8 118 70-130
563-58-6 1,1-Dichloropropene 10 11.6 116 70-130
10061-01-5 cis-1,3-Dichloropropene 10 10.7 107 70-130
10061-02-6 trans-1,3-Dichloropropene 10 11.6 116 70-130
108-20-3 Di-Isopropyl Ether 10 10.7 107 70-130
64-17-5 Ethyl Alcohol 500 1020 204*70-130
100-41-4 Ethylbenzene 10 11.3 113 70-130
637-92-3 Ethyl Tert Butyl Ether 10 10.1 101 70-130
* = Outside of Control Limits.
78 of 86
FA8448355.2.2
Blank Spike Summary Page 2 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2878-BS A0225849.D 1 04/14/21 LR n/a n/a VA2878
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-13, FA84483-14, FA84483-15, FA84483-16, FA84483-17, FA84483-18, FA84483-19
Spike BSP BSP
CAS No.Compound ug/l ug/l %Limits
87-68-3 Hexachlorobutadiene 10 12.1 121 70-130
98-82-8 Isopropylbenzene 10 11.5 115 70-130
99-87-6 p-Isopropyltoluene 10 11.8 118 70-130
74-83-9 Methyl Bromide 10 10.7 107 60-140
74-87-3 Methyl Chloride 10 10.8 108 60-140
74-95-3 Methylene Bromide 10 11.1 111 70-130
75-09-2 Methylene Chloride 10 11.2 112 70-130
1634-04-4 Methyl Tert Butyl Ether 10 10.7 107 70-130
91-20-3 Naphthalene 10 11.6 116 70-130
103-65-1 n-Propylbenzene 10 11.4 114 70-130
100-42-5 Styrene 10 11.0 110 70-130
75-85-4 Tert-Amyl Alcohol 100 131 131* a 70-130
994-05-8 Tert-Amyl Methyl Ether 10 10.6 106 70-130
75-65-0 Tert-Butyl Alcohol 100 118 118 70-130
762-75-4 Tert-Butyl Formate 100 94.6 95 70-130
630-20-6 1,1,1,2-Tetrachloroethane 10 11.2 112 70-130
79-34-5 1,1,2,2-Tetrachloroethane 10 10.8 108 70-130
127-18-4 Tetrachloroethylene 10 12.4 124 70-130
108-88-3 Toluene 10 11.3 113 70-130
87-61-6 1,2,3-Trichlorobenzene 10 11.4 114 70-130
120-82-1 1,2,4-Trichlorobenzene 10 11.3 113 70-130
71-55-6 1,1,1-Trichloroethane 10 12.1 121 70-130
79-00-5 1,1,2-Trichloroethane 10 11.1 111 70-130
79-01-6 Trichloroethylene 10 11.6 116 70-130
75-69-4 Trichlorofluoromethane 10 11.5 115 60-140
96-18-4 1,2,3-Trichloropropane 10 10.9 109 70-130
95-63-6 1,2,4-Trimethylbenzene 10 10.9 109 70-130
108-67-8 1,3,5-Trimethylbenzene 10 11.5 115 70-130
75-01-4 Vinyl Chloride 10 10.9 109 60-140
m,p-Xylene 20 22.9 115 70-130
95-47-6 o-Xylene 10 11.1 111 70-130
1330-20-7 Xylene (total)30 33.9 113 70-130
* = Outside of Control Limits.
79 of 86
FA8448355.2.2
Blank Spike Summary Page 3 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
VA2878-BS A0225849.D 1 04/14/21 LR n/a n/a VA2878
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-13, FA84483-14, FA84483-15, FA84483-16, FA84483-17, FA84483-18, FA84483-19
CAS No.Surrogate Recoveries BSP Limits
1868-53-7 Dibromofluoromethane 100%70-130%
17060-07-0 1,2-Dichloroethane-D4 100%70-130%
2037-26-5 Toluene-D8 100%70-130%
460-00-4 4-Bromofluorobenzene 99%70-130%
(a) Sporadic marginal failure.
* = Outside of Control Limits.
80 of 86
FA8448355.2.2
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA84435-1MS E106443.D 1000 04/08/21 LR n/a n/a VE2449
FA84435-1MSD E106444.D 1000 04/08/21 LR n/a n/a VE2449
FA84435-1 E106435.D 1000 04/08/21 LR n/a n/a VE2449
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-1, FA84483-2, FA84483-3, FA84483-4, FA84483-5, FA84483-6, FA84483-7, FA84483-8, FA84483-9,
FA84483-10, FA84483-11, FA84483-12
FA84435-1 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
71-43-2 Benzene 3790 10000 14000 102 10000 13600 98 3 70-130/20
108-86-1 Bromobenzene ND 10000 10400 104 10000 10400 104 0 70-130/20
74-97-5 Bromochloromethane ND 10000 9470 95 10000 9240 92 2 70-130/20
75-27-4 Bromodichloromethane ND 10000 11200 112 10000 10900 109 3 70-130/20
75-25-2 Bromoform ND 10000 9230 92 10000 9070 91 2 70-130/20
104-51-8 n-Butylbenzene ND 10000 9680 97 10000 9520 95 2 70-130/20
135-98-8 sec-Butylbenzene ND 10000 10500 105 10000 10300 103 2 70-130/20
98-06-6 tert-Butylbenzene ND 10000 9910 99 10000 9660 97 3 70-130/20
56-23-5 Carbon Tetrachloride ND 10000 10400 104 10000 10000 100 4 70-130/20
108-90-7 Chlorobenzene ND 10000 10200 102 10000 9920 99 3 70-130/20
75-00-3 Chloroethane ND 10000 7060 71 10000 8090 81 14 60-140/20
67-66-3 Chloroform ND 10000 10300 103 10000 10000 100 3 70-130/20
95-49-8 o-Chlorotoluene ND 10000 10300 103 10000 10200 102 1 70-130/20
106-43-4 p-Chlorotoluene ND 10000 10500 105 10000 10300 103 2 70-130/20
124-48-1 Dibromochloromethane ND 10000 10300 103 10000 9990 100 3 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 10000 9100 91 10000 8280 83 9 70-130/20
106-93-4 1,2-Dibromoethane ND 10000 10100 101 10000 9910 99 2 70-130/20
75-71-8 Dichlorodifluoromethane ND 10000 6960 70 10000 7980 80 14 60-140/20
95-50-1 1,2-Dichlorobenzene ND 10000 10100 101 10000 9820 98 3 70-130/20
541-73-1 1,3-Dichlorobenzene ND 10000 10600 106 10000 10400 104 2 70-130/20
106-46-7 1,4-Dichlorobenzene ND 10000 9940 99 10000 9870 99 1 70-130/20
75-34-3 1,1-Dichloroethane ND 10000 10100 101 10000 9760 98 3 70-130/20
107-06-2 1,2-Dichloroethane ND 10000 9360 94 10000 9180 92 2 70-130/20
75-35-4 1,1-Dichloroethylene ND 10000 8570 86 10000 8450 85 1 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 10000 10100 101 10000 10000 100 1 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 10000 9390 94 10000 9110 91 3 70-130/20
78-87-5 1,2-Dichloropropane ND 10000 10400 104 10000 10100 101 3 70-130/20
142-28-9 1,3-Dichloropropane ND 10000 9650 97 10000 9380 94 3 70-130/20
594-20-7 2,2-Dichloropropane ND 10000 10100 101 10000 9710 97 4 70-130/20
563-58-6 1,1-Dichloropropene ND 10000 9750 98 10000 9440 94 3 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 10000 10800 108 10000 10400 104 4 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 10000 9280 93 10000 9040 90 3 70-130/20
108-20-3 Di-Isopropyl Ether ND 10000 8500 85 10000 8200 82 4 70-130/20
64-17-5 Ethyl Alcohol ND 500000 633000 127 500000 642000 128 1 70-130/20
100-41-4 Ethylbenzene 2960 10000 13600 106 10000 13300 103 2 70-130/20
637-92-3 Ethyl Tert Butyl Ether ND 10000 8450 85 10000 8150 82 4 70-130/20
* = Outside of Control Limits.
81 of 86
FA8448355.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA84435-1MS E106443.D 1000 04/08/21 LR n/a n/a VE2449
FA84435-1MSD E106444.D 1000 04/08/21 LR n/a n/a VE2449
FA84435-1 E106435.D 1000 04/08/21 LR n/a n/a VE2449
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-1, FA84483-2, FA84483-3, FA84483-4, FA84483-5, FA84483-6, FA84483-7, FA84483-8, FA84483-9,
FA84483-10, FA84483-11, FA84483-12
FA84435-1 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
87-68-3 Hexachlorobutadiene ND 10000 10800 108 10000 10300 103 5 70-130/20
98-82-8 Isopropylbenzene ND 10000 10200 102 10000 10000 100 2 70-130/20
99-87-6 p-Isopropyltoluene ND 10000 10500 105 10000 10300 103 2 70-130/20
74-83-9 Methyl Bromide ND 10000 7620 76 10000 8970 90 16 60-140/20
74-87-3 Methyl Chloride ND 10000 7900 79 10000 8960 90 13 60-140/20
74-95-3 Methylene Bromide ND 10000 10300 103 10000 9950 100 3 70-130/20
75-09-2 Methylene Chloride ND 10000 8400 84 10000 8390 84 0 70-130/20
1634-04-4 Methyl Tert Butyl Ether ND 10000 8530 85 10000 8220 82 4 70-130/20
91-20-3 Naphthalene 322 J 10000 10300 100 10000 9720 94 6 70-130/20
103-65-1 n-Propylbenzene 256 J 10000 10900 106 10000 10600 103 3 70-130/20
100-42-5 Styrene ND 10000 9710 97 10000 9470 95 3 70-130/20
75-85-4 Tert-Amyl Alcohol ND 100000 103000 103 100000 101000 101 2 70-130/20
994-05-8 Tert-Amyl Methyl Ether ND 10000 9180 92 10000 8820 88 4 70-130/20
75-65-0 Tert-Butyl Alcohol ND 100000 98300 98 100000 95900 96 2 70-130/20
762-75-4 Tert-Butyl Formate ND 100000 76100 76 100000 72200 72 5 70-130/20
630-20-6 1,1,1,2-Tetrachloroethane ND 10000 10200 102 10000 10000 100 2 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 10000 9530 95 10000 9040 90 5 70-130/20
127-18-4 Tetrachloroethylene ND 10000 10500 105 10000 10300 103 2 70-130/20
108-88-3 Toluene 24900 10000 34000 91 10000 33200 83 2 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 10000 10000 100 10000 9510 95 5 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 10000 10000 100 10000 9610 96 4 70-130/20
71-55-6 1,1,1-Trichloroethane ND 10000 10400 104 10000 9970 100 4 70-130/20
79-00-5 1,1,2-Trichloroethane ND 10000 10400 104 10000 10200 102 2 70-130/20
79-01-6 Trichloroethylene ND 10000 10200 102 10000 9910 99 3 70-130/20
75-69-4 Trichlorofluoromethane ND 10000 8680 87 10000 10100 101 15 60-140/20
96-18-4 1,2,3-Trichloropropane ND 10000 9770 98 10000 9450 95 3 70-130/20
95-63-6 1,2,4-Trimethylbenzene 1650 10000 12200 106 10000 12000 104 2 70-130/20
108-67-8 1,3,5-Trimethylbenzene 473 J 10000 10800 103 10000 10500 100 3 70-130/20
75-01-4 Vinyl Chloride ND 10000 7900 79 10000 9160 92 15 60-140/20
m,p-Xylene 10100 20000 32000 110 20000 31300 106 2 70-130/20
95-47-6 o-Xylene 4350 10000 15300 110 10000 14900 106 3 70-130/20
1330-20-7 Xylene (total)14500 30000 47300 109 30000 46200 106 2 70-130/20
* = Outside of Control Limits.
82 of 86
FA8448355.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA84435-1MS E106443.D 1000 04/08/21 LR n/a n/a VE2449
FA84435-1MSD E106444.D 1000 04/08/21 LR n/a n/a VE2449
FA84435-1 E106435.D 1000 04/08/21 LR n/a n/a VE2449
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-1, FA84483-2, FA84483-3, FA84483-4, FA84483-5, FA84483-6, FA84483-7, FA84483-8, FA84483-9,
FA84483-10, FA84483-11, FA84483-12
CAS No.Surrogate Recoveries MS MSD FA84435-1 Limits
1868-53-7 Dibromofluoromethane 101%100%103%70-130%
17060-07-0 1,2-Dichloroethane-D4 99%98%105%70-130%
2037-26-5 Toluene-D8 95%96%95%70-130%
460-00-4 4-Bromofluorobenzene 100%101%101%70-130%
* = Outside of Control Limits.
83 of 86
FA8448355.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA84483-13MS A0225862.D 200 04/14/21 LR n/a n/a VA2878
FA84483-13MSD A0225863.D 200 04/14/21 LR n/a n/a VA2878
FA84483-13 A0225854.D 200 04/14/21 LR n/a n/a VA2878
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-13, FA84483-14, FA84483-15, FA84483-16, FA84483-17, FA84483-18, FA84483-19
FA84483-13 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
71-43-2 Benzene 947 2000 3230 114 2000 3320 119 3 70-130/20
108-86-1 Bromobenzene ND 2000 2100 105 2000 2190 110 4 70-130/20
74-97-5 Bromochloromethane ND 2000 2070 104 2000 2180 109 5 70-130/20
75-27-4 Bromodichloromethane ND 2000 2220 111 2000 2360 118 6 70-130/20
75-25-2 Bromoform ND 2000 2060 103 2000 2190 110 6 70-130/20
104-51-8 n-Butylbenzene ND 2000 2010 101 2000 2140 107 6 70-130/20
135-98-8 sec-Butylbenzene ND 2000 2160 108 2000 2300 115 6 70-130/20
98-06-6 tert-Butylbenzene ND 2000 2110 106 2000 2200 110 4 70-130/20
56-23-5 Carbon Tetrachloride ND 2000 2300 115 2000 2450 123 6 70-130/20
108-90-7 Chlorobenzene ND 2000 2090 105 2000 2190 110 5 70-130/20
75-00-3 Chloroethane ND 2000 2220 111 2000 2380 119 7 60-140/20
67-66-3 Chloroform ND 2000 2160 108 2000 2270 114 5 70-130/20
95-49-8 o-Chlorotoluene ND 2000 2170 109 2000 2250 113 4 70-130/20
106-43-4 p-Chlorotoluene ND 2000 2000 100 2000 2110 106 5 70-130/20
124-48-1 Dibromochloromethane ND 2000 2090 105 2000 2180 109 4 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 2000 1910 96 2000 2020 101 6 70-130/20
106-93-4 1,2-Dibromoethane ND 2000 1980 99 2000 2070 104 4 70-130/20
75-71-8 Dichlorodifluoromethane ND 2000 1810 91 2000 1930 97 6 60-140/20
95-50-1 1,2-Dichlorobenzene ND 2000 2050 103 2000 2140 107 4 70-130/20
541-73-1 1,3-Dichlorobenzene ND 2000 2090 105 2000 2210 111 6 70-130/20
106-46-7 1,4-Dichlorobenzene ND 2000 2020 101 2000 2120 106 5 70-130/20
75-34-3 1,1-Dichloroethane ND 2000 2300 115 2000 2410 121 5 70-130/20
107-06-2 1,2-Dichloroethane ND 2000 2050 103 2000 2180 109 6 70-130/20
75-35-4 1,1-Dichloroethylene ND 2000 2310 116 2000 2430 122 5 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 2000 2200 110 2000 2330 117 6 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 2000 2280 114 2000 2420 121 6 70-130/20
78-87-5 1,2-Dichloropropane ND 2000 2060 103 2000 2160 108 5 70-130/20
142-28-9 1,3-Dichloropropane ND 2000 1950 98 2000 2060 103 5 70-130/20
594-20-7 2,2-Dichloropropane ND 2000 2140 107 2000 2210 111 3 70-130/20
563-58-6 1,1-Dichloropropene ND 2000 2180 109 2000 2320 116 6 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 2000 1940 97 2000 2050 103 6 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 2000 2050 103 2000 2150 108 5 70-130/20
108-20-3 Di-Isopropyl Ether ND 2000 2030 102 2000 2150 108 6 70-130/20
64-17-5 Ethyl Alcohol ND 100000 90700 91 100000 110000 110 19 70-130/20
100-41-4 Ethylbenzene 1340 2000 3680 117 2000 3690 118 0 70-130/20
637-92-3 Ethyl Tert Butyl Ether ND 2000 1840 92 2000 1950 98 6 70-130/20
* = Outside of Control Limits.
84 of 86
FA8448355.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA84483-13MS A0225862.D 200 04/14/21 LR n/a n/a VA2878
FA84483-13MSD A0225863.D 200 04/14/21 LR n/a n/a VA2878
FA84483-13 A0225854.D 200 04/14/21 LR n/a n/a VA2878
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-13, FA84483-14, FA84483-15, FA84483-16, FA84483-17, FA84483-18, FA84483-19
FA84483-13 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
87-68-3 Hexachlorobutadiene ND 2000 2160 108 2000 2250 113 4 70-130/20
98-82-8 Isopropylbenzene 68.4 J 2000 2210 107 2000 2310 112 4 70-130/20
99-87-6 p-Isopropyltoluene ND 2000 2160 108 2000 2280 114 5 70-130/20
74-83-9 Methyl Bromide ND 2000 2640 132 2000 2690 135 2 60-140/20
74-87-3 Methyl Chloride ND 2000 2170 109 2000 2310 116 6 60-140/20
74-95-3 Methylene Bromide ND 2000 2060 103 2000 2170 109 5 70-130/20
75-09-2 Methylene Chloride ND 2000 2160 108 2000 2280 114 5 70-130/20
1634-04-4 Methyl Tert Butyl Ether ND 2000 1940 97 2000 2040 102 5 70-130/20
91-20-3 Naphthalene 596 2000 2680 104 2000 2730 107 2 70-130/20
103-65-1 n-Propylbenzene 190 2000 2310 106 2000 2410 111 4 70-130/20
100-42-5 Styrene ND 2000 2050 103 2000 2160 108 5 70-130/20
75-85-4 Tert-Amyl Alcohol 778 J 20000 18400 88 20000 19600 94 6 70-130/20
994-05-8 Tert-Amyl Methyl Ether ND 2000 1890 95 2000 2000 100 6 70-130/20
75-65-0 Tert-Butyl Alcohol ND 20000 15400 77 20000 16500 83 7 70-130/20
762-75-4 Tert-Butyl Formate ND 20000 15900 80 20000 16000 80 1 70-130/20
630-20-6 1,1,1,2-Tetrachloroethane ND 2000 2090 105 2000 2170 109 4 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 2000 1950 98 2000 2030 102 4 70-130/20
127-18-4 Tetrachloroethylene ND 2000 2290 115 2000 2410 121 5 70-130/20
108-88-3 Toluene 5600 2000 8520 146* a 2000 8320 136* a 2 70-130/20
87-61-6 1,2,3-Trichlorobenzene ND 2000 2040 102 2000 2130 107 4 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 2000 2040 102 2000 2140 107 5 70-130/20
71-55-6 1,1,1-Trichloroethane ND 2000 2230 112 2000 2360 118 6 70-130/20
79-00-5 1,1,2-Trichloroethane ND 2000 2050 103 2000 2160 108 5 70-130/20
79-01-6 Trichloroethylene ND 2000 2200 110 2000 2310 116 5 70-130/20
75-69-4 Trichlorofluoromethane ND 2000 2230 112 2000 2400 120 7 60-140/20
96-18-4 1,2,3-Trichloropropane ND 2000 1970 99 2000 2020 101 3 70-130/20
95-63-6 1,2,4-Trimethylbenzene 2660 2000 5000 117 2000 4990 117 0 70-130/20
108-67-8 1,3,5-Trimethylbenzene 787 2000 2990 110 2000 3060 114 2 70-130/20
75-01-4 Vinyl Chloride ND 2000 2110 106 2000 2250 113 6 60-140/20
m,p-Xylene 5860 4000 11100 131*4000 11000 129 1 70-130/20
95-47-6 o-Xylene 3170 2000 5680 126 2000 5640 124 1 70-130/20
1330-20-7 Xylene (total)9030 6000 16800 130 6000 16600 126 1 70-130/20
* = Outside of Control Limits.
85 of 86
FA8448355.3.2
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:FA84483
Account:GRINCC GRI (Geological Resources Inc.)
Project:Twin Roads Mobile; 1011 Liberty Rd, Archdale, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
FA84483-13MS A0225862.D 200 04/14/21 LR n/a n/a VA2878
FA84483-13MSD A0225863.D 200 04/14/21 LR n/a n/a VA2878
FA84483-13 A0225854.D 200 04/14/21 LR n/a n/a VA2878
The QC reported here applies to the following samples:Method: SM 6200B
FA84483-13, FA84483-14, FA84483-15, FA84483-16, FA84483-17, FA84483-18, FA84483-19
CAS No.Surrogate Recoveries MS MSD FA84483-13 Limits
1868-53-7 Dibromofluoromethane 102%102%99%70-130%
17060-07-0 1,2-Dichloroethane-D4 100%101%101%70-130%
2037-26-5 Toluene-D8 101%100%99%70-130%
460-00-4 4-Bromofluorobenzene 97%96%98%70-130%
(a) Outside control limits due to high level in sample relative to spike amount.
* = Outside of Control Limits.
86 of 86
FA8448355.3.2

APPENDIX D
Contaminant Mass Reduction Calculations
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
Contaminant Mass (grams)Time
Total Contaminant Mass vs. Time
Twin Roads Mobil (Incident No. 37896)
Contaminant Mass (grams)Linear (Contaminant Mass (grams))
Area ID Well ID
Area
(ft²)
Average Well
Depth
(ft.)
Average
Depth to
Water
(ft.)
Water
Column
Height
(ft)
Volume
(ft³)
Volume
(L)
Effective
Porosity
Effective
Volume
(L)
MW-3
RW-2
MW-11
MW-7
MW-10
RW-1
MW-1
MW-2
MW-8
OW-1
OW-2
OW-3
Area Date Well
Benzene
(μ/L)
Toluene
(μ/L)
Ethylbenzene
(μ/L)
Xylenes
(μ/L)
MTBE
(μ/L)
Naphthalene
(μ/L)
Total*
(μ/L)
DTW
(ft.)
Average Water
Column Height
(ft.)
Total Average
Mass
(g)
Percent Red. To Date Red.
MW-3 FP FP FP FP FP FP FP 14.65
RW-2 5540.00 28400.00 4560.00 29,300 473.00 2420.00 70693.00 13.90
MW-11 FP FP FP FP FP FP FP 17.90
Avg.5540.00 28400.00 4560.00 29300.00 473.00 2420.00 70693.00 15.48
MW-3 FP FP FP FP FP FP FP 13.21
RW-2 1160.00 7820.00 1250.00 9360.00 0.00 675.00 20265.00 12.71
MW-11 FP FP FP FP FP FP FP 15.56
Avg.1160.00 7820.00 1250.00 9360.00 0.00 675.00 20265.00 13.83
MW-3 FP FP FP FP FP FP FP 11.80
RW-2 947 5,600 1,340 9,030 0.00 596 17513.00 9.10
MW-11 FP FP FP FP FP FP FP 13.28
Avg.947.00 5600.00 1340.00 9030.00 0.00 596.00 17513.00 11.39
MW-7 6730.00 4340.00 1500.00 3250.00 1300.00 287.00 17407.00 16.28
MW-10 23600.00 114000.00 9510.00 54600.00 1410.00 3100.00 206220.00 17.19
RW-1 15400.00 60800.00 8110.00 49600.00 1980.00 2,460 138350.00 15.51
Avg.15243.33 59713.33 6373.33 35816.67 1563.33 1949.00 120659.00 16.33
MW-7 4650.00 5730.00 1050.00 2720.00 419.00 167.00 14736.00 15.55
MW-10 FP FP FP FP FP FP 206220.00 15.56
RW-1 13100.00 39800.00 4570.00 28300.00 171.00 1870.00 87811.00 14.99
Avg.8875.00 22765.00 2810.00 15510.00 295.00 1018.50 102922.33 15.37
MW-7 122 113 49.3 112 0.00 11.3 407.60 11.80
MW-10 FP FP FP FP FP FP 206220.00 13.28
RW-1 7,660 19,500 1,950 12,600 0.00 784 42494.00 10.80
Avg.3891.00 9806.50 999.65 6356.00 0.00 397.65 83040.53 11.96
--- ---
APPENDIX C
PERCENTAGE REDUCTIONS
TWIN ROADS MOBIL (INCIDENT NO. 37896)
0.20
07/27/16
---07/27/16
2 3,712.46 1,189,664
1 1,034.02 28.67 15.25 392,939
11,337.79
Area 1
04/06/21 1,771.49 -0.6%67.5%
67.7%
---
67.7%
5,457.64
17.27
14.84
13.18
10/10/19 1,761.10
Area 2
04/06/21 26,258.74 -4.3%3.0%
25,173.86 7.0% 7.0%
15.04
11.63
10.67 27,076.70
10/10/19
725,787
237,933
78,588
Baseline Event
12815511.30
4201311.32
13.42 13877
3 29.17 17.86 3,628,934
27.00 15.68
Page 1 of 3
Area ID Well ID
Area
(ft²)
Average Well
Depth
(ft.)
Average
Depth to
Water
(ft.)
Water
Column
Height
(ft)
Volume
(ft³)
Volume
(L)
Effective
Porosity
Effective
Volume
(L)
MW-3
RW-2
MW-11
MW-7
MW-10
RW-1
MW-1
MW-2
MW-8
OW-1
OW-2
OW-3
Area Date Well
Benzene
(μ/L)
Toluene
(μ/L)
Ethylbenzene
(μ/L)
Xylenes
(μ/L)
MTBE
(μ/L)
Naphthalene
(μ/L)
Total*
(μ/L)
DTW
(ft.)
Average Water
Column Height
(ft.)
Total Average
Mass
(g)
Percent Red. To Date Red.
APPENDIX C
PERCENTAGE REDUCTIONS
TWIN ROADS MOBIL (INCIDENT NO. 37896)
0.20
2 3,712.46 1,189,664
1 1,034.02 28.67 15.25 392,939
11,337.79 725,787
237,933
78,588
Baseline Event
12815511.30
4201311.32
13.42 13877
3 29.17 17.86 3,628,934
27.00 15.68
MW-1 1130.00 18.70 155.00 31.40 550.00 103.00 1988.10 16.88
MW-2 15.90 3.70 441.00 490.00 2.00 411.00 1363.60 19.57
MW-8 7.10 0.26 18.30 1.80 374.00 15.50 416.96 19.70
OW-1 4210.00 2470.00 461.00 2720.00 2470.00 537.00 12868.00 16.41
OW-2 1510.00 146.00 485.00 714.00 68.30 652.00 3575.30 17.53
OW-3 3.10 0.39 0.17 0.50 49.60 0.17 53.93 17.09
Avg.1146.02 439.84 260.08 659.62 585.65 286.45 3377.65 17.86
MW-1 972.00 28.00 179.00 76.60 621.00 104.00 1980.60 16.46
MW-2 12.20 0.00 581.00 661.00 0.00 659.00 1913.20 18.04
MW-8 8.10 0.00 45.60 0.00 1570.00 27.60 1651.30 18.57
OW-1 3730.00 2210.00 469.00 1180.00 1680.00 306.00 9575.00 14.86
OW-2 493.00 31.00 144.00 101.00 0.00 208.00 977.00 15.87
OW-3 1.10 0.00 0.00 0.00 35.10 0.00 36.20 16.19
Avg.869.40 378.17 236.43 336.43 651.02 217.43 2688.88 16.67
MW-1 520 0.00 111 122 871 62.7 1686.70 12.75
MW-2 8.2 0.00 611 827 0.00 573 2019.20 14.20
MW-8 13.9 0.00 34.1 8.7 72.4 34.2 163.30 14.34
OW-1 2,940 2,180 381 1,050 1,140 294 7985.00 11.10
OW-2 405 36.4 383 157 0.00 434 1415.40 12.93
OW-3 3.0 0.00 0.00 0.00 82.2 0.00 85.20 13.20
Avg.648.35 369.40 253.35 360.78 433.12 232.98 2225.80 13.09
Date
Average Water
Column Height
(ft.)
07/27/16 11.72
10/10/19 12.99
04/06/21 16.13
Notes:
• Area of the contaminant plume is calculated from Figure 7
• Height of the water column is calculated by subtracting the average depth to water from the average well depth of the referenced monitoring wells
2,451.45 ---
-6.5%
Area 3
04/06/21 2,298.13
07/27/16
10/10/19 2,158.4512.50
11.30 ---
12.0% 12.0%
6.3%
-4.2%30,328 13%
29,093 16.8%17%
34,986 ------
Percent Reduction To DatePercent Reduction Compared
to Previous Event
Total Contaminant Mass
(g)
16.08
Page 2 of 3
Area ID Well ID
Area
(ft²)
Average Well
Depth
(ft.)
Average
Depth to
Water
(ft.)
Water
Column
Height
(ft)
Volume
(ft³)
Volume
(L)
Effective
Porosity
Effective
Volume
(L)
MW-3
RW-2
MW-11
MW-7
MW-10
RW-1
MW-1
MW-2
MW-8
OW-1
OW-2
OW-3
Area Date Well
Benzene
(μ/L)
Toluene
(μ/L)
Ethylbenzene
(μ/L)
Xylenes
(μ/L)
MTBE
(μ/L)
Naphthalene
(μ/L)
Total*
(μ/L)
DTW
(ft.)
Average Water
Column Height
(ft.)
Total Average
Mass
(g)
Percent Red. To Date Red.
APPENDIX C
PERCENTAGE REDUCTIONS
TWIN ROADS MOBIL (INCIDENT NO. 37896)
0.20
2 3,712.46 1,189,664
1 1,034.02 28.67 15.25 392,939
11,337.79 725,787
237,933
78,588
Baseline Event
12815511.30
4201311.32
13.42 13877
3 29.17 17.86 3,628,934
27.00 15.68
• Volume of the contaminant plume is calculated by multiplying the area of the plume by the average height of the water column during each sampling event
• Effective porosity is assumed based on the sub-surface soil profile obtained from well construction records and soil boring logs
• Total mass was calculated by multiplying the total contaminant concentrations for the sampling event with effective volume
• Contaminant mass cannot be calculated in wells containing FP; therefore, the total concentration is based on the previously known concentrations in the well containing FP.
Page 3 of 3