MO-4283_13543_CA_MRP_20191107_October 2019 Groundwater Monitoring Report

OCTOBER 2019 GROUNDWATER MONITORING REPORT
FORMER PRESLAR'S EXXON
901 NC HWY 24/27
MIDLAND, CABARRUS COUNTY, NORTH CAROLINA
GROUNDWATER INCIDENT # 13543
NCDOT PROJECT # R-0615B
NCDOT WBS # 34348.3.5
UIC PERMIT #W10300282
Prepared for:
North Carolina Department of Transportation
Geotechnical Engineering Unit
1589 Mail Service Center
Raleigh, NC 27699-1589
Prepared by:
Draper Aden Associates
114 Edinburgh South Drive, Suite 200
Cary, NC 27511
DAA Project No. 17117301-010701
November 9, 2019
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W*�AftI4
Michael W. Branson, P.G.
Senior Geologist
William D. Newcomb, P.G.
Senior Program Manager

Draper Aden Associates
Engineering • Surveying • Environmental Services
Letter of Transmittal
To: Ms. Trudy Beverly Date: November 12, 2019
North Carolina Department of Project Number: 171107301-010701
Environmental Quality
UST Section
610 East Center Ave. Project Name: Peslar's Exxon (#13543)
Mooresville, NC 28115 Phone No. 919-582-7283
cc:
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11/9/19
October 2019 Groundwater Monitoring Report
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REMARKS:
Attached is one hard copy and one electronic copy of the Preslar's Exxon (Incident 13543)
October 2019 Groundwater Monitoring Report.
Printed Name:
Title:
Michael Branson
Project Manager
Signature:
T:\Env-NC\Project Files\NCDOT\GeoEnvi ron\2014\2014.0009. N DOT Preslar's Exxon Remediation\2019 sampling\Beverly Report Transmital Coversheet.docx
114 Edinburgh South Drive • Suite 200 • Cary, NC • 27511 • 919.827.0864 • www.daa.com
Blacksburg • Charlottesville • Manassas • Newport News • Richmond • Virginia Beach
Fayetteville

Site Name and Location:
Facility ID Number:
Latitude and Longitude:
Date of Report:
Land Use Category:
UST System Owner:
Former Preslar's Exxon
901 Hwy 24/27
Midland, North Carolina
00-0-0000007704
35.265833 North, 80.558333 West
November 9, 2019
Industrial (Highway)
Former Preslar's Exxon
Land Owner: North Carolina Department of Transportation
Geotechnical Engineering Unit
1589 Mail Service Center
Raleigh, North Carolina 27699-1589
Phone:[phone]
Consultant: Draper Aden Associates
114 Edinburgh South, Suite 200
Cary, North Carolina 27511
Attn: Mr. Mike Branson
Phone: [phone]
Release Information: The UST system at the referenced site included one 2,000-gallon and two 3,000-
gallon gasoline USTs and one 550-gallon kerosene UST. The gasoline and kerosene tanks were located
in two different areas, now occupied by the median of NC Highway 24/27. A Comprehensive Site
Assessment indicated that groundwater was contaminated with petroleum constituents. No free
product was detected. In 2014, a Corrective Action Plan Addendum that proposed injection of a sulfate
substrate was approved. Injections were completed in May 2015 and April 2016 with the results
suggesting decreased contaminant concentrations.
Seal and Signature of Certifying Licensed Geologist
I, Michael W. Branson, a Licensed Geologist for Solutions-IES, do certify that the information contained
in this report is correct and accurate to the best of my knowledge.
Michael W. Branson, P.G. $E Al_
NC License No. 467 A67
��'•f,OLOG�.'.•' Sir
W. 16
tON1,I sit
Draper Aden Associates, is licensed to practice geology in North Carolina. The certification number of
the company or corporation is C-379.
M

TABLE OF CONTENTS
1.0 INTRODUCTION..................................................................................................... 1
1.1 SITE BACKGROUND...........
..........................1
2.0 GROUNDWATER MONITORING........................................................................... 5
2.1 GROUNDWATER ELEVATIONS........................................................................................................5
2.2 GROUNDWATER SAMPLING............................................................................................................5
2.3 GROUNDWATER MONITORING RESULTS..................................................................................6
2.3.1 BENZENE DISTRIBUTION IN SHALLOW GROUNDWATER....................................................7
2.3.2 MANN-KENDALL TREND ANALYSES............................................................................................7
3.0 CONCLUSIONS........................................................................................................9
REFERENCES.....................................................................................................................10
FIGURES
Figure 1
Site Location Map
Figure 2
Site Map
Figure 3
Water Supply Well Locations
Figure 4
Injection Points Map
Figure 5
Shallow Groundwater Potentiometric Surface Map — October 2019
Figure 6
Benzene Isoconcentration Map — March 2017
TABLES
Table 1
Summary of Groundwater Elevation Data
Table 2
Water Supply Well Information
Table 3
Summary of Field Parameters
Table 4
Summary of Post -Injection Groundwater Analytical Results
Table 5
Summary of Historical Groundwater Analytical Results
APPENDICES
Appendix A Laboratory Analytical Report
Appendix B Groundwater Concentration Trends in Selected Wells

October 2019 Groundwater Monitoring Report DAA Project No. 17117301-010701
Former Preslar's Exxon NCDOT WBS # 34348.3.5
Midland, Cabarrus County, NC November 9, 2019
1.0 INTRODUCTION
Draper Aden Associates (DAA), is continuing to implement the approved groundwater remediation
program at the Former Preslar's Exxon Site (Site) located at 901 NC Hwy 24/27 in Midland, Cabarrus
County, North Carolina (Figure 1). This October 2079 Groundwater Monitoring Report was prepared for
the North Carolina Department of Transportation (NCDOT) Geotechnical Engineering Unit to document
the groundwater conditions in accordance with Underground Injection Control (UIC) Program Permit
No. W10300282. It describes the activities and results of the groundwater sampling event that took
place in October 2019, which included sampling and analyses at monitoring wells MW-1, MW-4, MW-
13, Perimeter Compliance Wells MW-3, and MW-12, and water supply wells WSW-10 and WSW-11,
completed from October 8 to 9, 2019.
h d 41 I-IVA CCdX4111►L:
Prior to NCDOT acquisition, the Site was operated as a convenience store and gasoline station from
1968 to 1994 (S&ME, 2001). The underground storage tank (UST) system at the former station
consisted of four USTs and one pump island with associated product dispensers. The NCDOT
purchased the property from Mr. Walter Preslar in 1994 and removed the USTs from the Site during
tank closure activities in January 1995. The NCDOT demolished the remaining building on site shortly
after the tank closure activities to accommodate widening NC Highway 24/27. After road construction
was finished, the grass median between the eastbound and westbound lanes of NC Highway 24/27
contained the former UST basin. In August 1995, S&ME, Inc. (S&ME) completed a receptor survey that
identified 13 water supply wells located within 1,500 feet of the site. These wells resulted in the site
receiving a high -risk groundwater classification. Subsequent to the classification, the NCDOT
successfully negotiated closure of all but two of the wells.
Thirteen monitoring wells (Table 1 and Figure 2) have been installed at the Site since the USTs were
removed in 1995. A Comprehensive Site Assessment (CSA) completed in August 2001 (S&ME, 2001)
identified petroleum contamination in groundwater originating from a probable source area near the
former gasoline USTs shown on Figure 2 at MW-1 and MW-5. A CSA addendum in January 2002

October 2019 Groundwater Monitoring Report
Former Preslar's Exxon
Midland, Cabarrus County, NC
DAA Project No. 17117301-010701
NCDOT WBS # 34348.3.5
November 9, 2019
completed the groundwater plume delineation (S&ME, 2002a). S&ME completed the soil
contamination delineation and prepared a second addendum in November 2002 (S&ME, 2002b).
The CSA reported detections of petroleum constituents above 15A NCAC 2L 0.0202 Groundwater
Standards (NC 2L Standards) in four of the 13 monitoring wells (MW-1, MW-3, MW-4, and MW-5).
Benzene, ethylbenzene, toluene, total xylenes, methyl -tert- butyl ether (MTBE), isopropylether (IPE),
naphthalene, C5-C8 aliphatics, C9-Cl8 aliphatics, and C9-C22 aromatics exceeded the NC 2L Standards
in one or more of the monitoring wells.
The analyses also detected the halogenated compounds chloroform, bromodichloromethane, and
dibromochloromethane above NC 2L Standards in groundwater samples collected from monitoring
wells MW-3, MW-6, MW-7 and MW-8 located south of NC Highway 24/27. These trihalomethanes in
the groundwater were presumed to be the result of well construction activities that used treated
municipal water in the well construction process. The CSA concluded that the presence of these
halogenated compounds in the groundwater was not likely related to the petroleum -release incident at
the Site.
In March 2005, Solutions-IES (SIES), now Draper Aden Associates (DAA) prepared a Corrective Action
Plan (CAP) for the North Carolina Department of Environment and Natural Resources, now the North
Carolina Department of Environmental Quality (NCDEQ) UST Section, Mooresville Regional Office
(MRO), that recommended in situ chemical oxidation (ISCO) using an iron- and steam -activated sodium
persulfate injection as the remediation alternative (SIES, 2005). From 2005 to 2012, the NCDOT made
attempts to reduce the risk classification of the site by identifying and abandoning nearby water supply
wells within 1,000 feet and irrigation wells within 250 feet of the source area (Figure 3, Table 2).
However, a replacement well for the closest irrigation well (WSW-11) did not yield sufficient water for
the owner's use, so the original irrigation well was not abandoned, and reclassification was not an
option.
Groundwater sampling completed by SIES subsequent to the CAP indicated that groundwater was
anaerobic, not aerobic and ISCO would not be a suitable remedy. Instead, a CAP Addendum (SIES,

October 2019 Groundwater Monitoring Report
Former Preslar's Exxon
Midland, Cabarrus County, NC
DAA Project No. 17117301-010701
NCDOT WBS # 34348.3.5
November 9, 2019
2012) compared a sulfate -enhanced bioremediation using EAS® (for anaerobic conditions) with vacuum
extraction/air sparging. The CAP Addendum recommended the sulfate -enhanced bioremediation as
the preferred groundwater remedy. The UST Section MRO issued a Notice of Regulatory Requirements
(NORR) to NCDOT dated August 14, 2012, requesting results of pilot testing of the EAS® technology
before completing their review of the addendum. SIES implemented the pilot test in June 2012, and
submitted the EAS Technology Evaluation Report (SIES, 2013) on January 23, 2013. The UST Section
MRO provided approval of the CAP Addendum in a NORR dated August 14, 2013.
On March 31, 2015, the NCDOT received Injection Permit W10300282 from the NCDEQ Division of
Water Resources (DWR) UIC Program for the installation of 21 injection wells and approval to inject
EAS® substrate into the groundwater at the Site. In April 2015, 19 permanent injection wells were
installed at the site. Two previously installed pilot study wells were used as injection wells, which
brought the total number of injection wells to 21 (Figure 4). The initial full-scale injection event was
performed on May 18 to 20, 2015, in which 1,113 gallons of EAS® were injected (SIES, 2015). Following
the injection, SIES conducted post -injection groundwater monitoring events at 1-, 3-, and 6-month
intervals. The analytical results indicated that petroleum compounds were decreasing in the 1- and 3-
month intervals, but had increased to pre -injection concentrations at the 6-month interval. Based on
these results, SIES and NCDOT requested approval to conduct a second injection event.
A second injection event was approved and was conducted in April 2016 (SIES, 2016). From April 11 to
14, 2016, SIES gravity -fed EAS® into each injection point directly from the 55-gallon drum in which it
was shipped. As with the first injection event, 1,113 gallons of EAS° were injected into the 21 injection
wells. A 6-month post -injection groundwater monitoring event indicated a reduction in contamination.
On June 1, 2016, the NCDEQ issued "North Carolina Petroleum UST Release Corrective Action Phase
Project Management: A Calibrated Risk -based Corrective Action Decision & Implementation Guide."
This document states that when groundwater contamination is below the Gross Contaminant Levels
(GCLs) and is shown to be stable, active remediation may be halted and either MNA continues or the
9

October 2019 Groundwater Monitoring Report
Former Preslar's Exxon
Midland, Cabarrus County, NC
DAA Project No. 17117301-010701
NCDOT WBS # 34348.3.5
November 9, 2019
site is closed. Based on the April 2016 data, the NCDEQ directive, and conversations with the NCDEQ
incident manager for this site, the NCDOT directed that monitoring -only was required for the Site.
Following the receipt of the October 2017 Groundwater Monitoring Report, the NCDEQ, by a Notice of
Regulatory Requirements (NORR) dated January 9, 2018, approved a request to change the frequency
of sampling from semi-annual to annual. After submitting the October 2018 report, the NCDEQ issued
another NORR that reduced the number of monitoring wells sampled (MW-1, MW-3, MW-4, MW-12,
and MW-13), requested editorial changes to the report, and directed the 2019 monitoring report to be
submitted by November 30, 2019.

October 2019 Groundwater Monitoring Report
Former Preslar's Exxon
Midland, Cabarrus County, NC
2.0 GROUNDWATER MONITORING
DAA Project No. 17117301-010701
NCDOT WBS # 34348.3.5
November 9, 2019
The approved injection permit monitoring plan requires groundwater level measurement and sampling
at the 13 monitoring wells. As noted above, this plan was modified to reduce the number of wells
sampled.
The modified sampling plan included wells MW-1, MW-4, MW-13, and perimeter wells MW-3, and MW-
12. The permit also requires that groundwater samples be collected from two water supply wells
(WSW-10 and WSW-11). Sampling for the modified plan, including water supply wells, was completed
from October 8 to 9, 2019, and results addressed in this report.
2.1 GROUNDWATER ELEVATIONS
Prior to collecting groundwater level measurements, DAA personnel opened each monitoring well to
allow the water level to equilibrate. Field personnel used an electronic water level indicator with a
decontaminated down -hole probe to measure water levels in each monitoring well. The depth -to -
water measurements were converted to elevations by subtracting the depth -to -water measurement
from the top -of -casing elevation that was surveyed by the NCDOT. Table 1 presents the October 2019
water level data and previous water level measurements. The data show that seasonal fluctuations in
groundwater elevation on the order of several feet can occur.
The groundwater elevation data for wells screened in the shallow aquifer were used to develop a
shallow potentiometric surface map for October 2019 (Figure 5). The groundwater contour map shows
that shallow groundwater generally flows to the southeast, which is similar to previous findings.
However, because bedrock is present at a depth of about 4 to 6 ft bgs, preferential groundwater flow
may be fracture -controlled and local variations to the apparent flow direction may be present.
2.2 GROUNDWATER SAMPLING
DAA collected groundwater samples using low -flow purging methods after measuring the water level in
each of the sampled monitoring wells. While purging, personnel recorded pH, temperature, specific
conductance, dissolved oxygen (DO), and oxidation-reduction potential (ORP) (Table 3) until each
parameter stabilized or until the wells were nearly purged dry. The water sample from well WSW-10

October 2019 Groundwater Monitoring Report
Former Preslar's Exxon
Midland, Cabarrus County, NC
DAA Project No. 17117301-010701
NCDOT WBS # 34348.3.5
November 9, 2019
was collected by lowering a submersible pump into the well, and from well WSW-11 by using the
existing well pump and pressure tank. The pumps were run for approximately 15 minutes to purge the
system and obtain a representative sample.
Groundwater samples from the monitoring wells were collected directly into laboratory -supplied
containers via peristaltic pump. Groundwater samples from the water supply wells were collected from
the nearest available spigot to the pressure tank or from the pump tubing directly into the bottles. The
samples were stored on ice and transported under chain -of -custody control to Pace Analytical Services
(Pace Lab) in Huntersville, North Carolina for analysis of sulfate by EPA Method 300.0 and volatile
organic compounds (VOCs) by SM 6200B.
2.3 GROUNDWATER MONITORING RESULTS
Table 4 summarizes the results of the target compounds detected since the initial injection was
conducted and Table 5 summarizes the historical results of all detections. The applicable NC 2L
Standards are included for comparison. The laboratory analytical report for the October 2019
monitoring event is provided in Appendix A.
Constituents detected above their respective NC 2L Standards on the October 2019 monitoring event
include:
• Benzene (MW-4, MW-13),
• Ethylbenzene (MW-4),
• n-Propylbenzene (MW-4),
• Chloromethane (MW-4), and
• Naphthalene (MW-4, MW-13).
Chloromethane was detected in the sample from well MW-4 during the October 2019 sampling event.
As this is the first time this compound has been detected, DAA considered it anomalous and will verify
its occurrence in future sampling events.
Constituents detected at less than their respective NC 2L Standard on the October 2019 monitoring
event include:
• Benzene (MW-12),
Z

October 2019 Groundwater Monitoring Report
Former Preslar's Exxon
Midland, Cabarrus County, NC
• Ethylbenzene (MW-13, MW-12),
• IPE (MW-4, MW-12, MW-13),
• Toluene (MW-4, MW-13),
• Total xylenes (MW-4, MW-13),
• n-Butylbenzene (MW-4),
• Isopropyl benzene (MW-4, MW-13),
• 1,2,4-Trimethylbenzene (MW-4, MW-12, MW-13),
DAA Project No. 17117301-010701
NCDOT WBS # 34348.3.5
November 9, 2019
Sulfate was detected at less than the NC 2L Standard on the October 2019 event from all sampled wells.
In addition to the monitoring wells, two non -potable water supply wells (WSW-10 and WSW-11) were
sampled and analyzed for VOCs and sulfate. No VOCs were detected in either sample. Sulfate was
detected at concentrations below the 2L Standard in WSW-10 (42.8 mg/L) and WSW-11 (37.5 mg/L).
The concentration in well WSW-11 was of concern to the NCDEQ because the initial post -injection
samples indicated an increase in sulfate in that well sample. However, the sulfate concentration has
decreased since August 2015 and is stable at the baseline concentration (Appendix B).
As shown on Table 4, the constituents detected above their respective 2L Standard are within the post-
2015 full-scale injection historical range.
2.3.1 BENZENE DISTRIBUTION IN SHALLOW GROUNDWATER
Figure 6 presents interpreted lateral extent of benzene concentration in the shallow groundwater.
Although several compounds have been detected in the site groundwater, only benzene and
naphthalene have been detected on a consistent basis. Because benzene and naphthalene were
present in the same wells, benzene was chosen to represent the contaminant plume configuration.
2.3.2 MANN-KENDALL TREND ANALYSES
DAA conducted Mann -Kendall single -well trend analyses on benzene and naphthalene concentrations
in monitoring wells MW-4 and MW-13, and benzene in well MW-1 where these compounds were
consistently above the 2L Standards (Appendix B) in at least five sampling events since the start of
injection. During previous sampling events, sulfate was detected in irrigation well WSW-11 at

October 2019 Groundwater Monitoring Report
Former Preslar's Exxon
Midland, Cabarrus County, NC
DAA Project No. 17117301-010701
NCDOT WBS # 34348.3.5
November 9, 2019
increasing concentrations after the injection events. Based on these results, NCDEQ requested an
evaluation of sulfate concentration trends. Although sulfate has not been detected above the 2L
Standard in this well, DAA presented the data and conducted the Mann -Kendall analysis to support the
conclusions below.
Benzene concentration trends are stable in wells MW-4 and MW-13 and decreasing in well MW-
1.
• Naphthalene concentration trends are stable in MW-4 and decreasing in MW-13.
• Sulfate concentrations are stable in well WSW-11.

October 2019 Groundwater Monitoring Report
Former Preslar's Exxon
Midland, Cabarrus County, NC
3.0 CONCLUSIONS
DAA Project No. 17117301-010701
NCDOT WBS # 34348.3.5
November 9, 2019
The petroleum source area for the Site is located in the median of NC Highway 24/27. The contaminant
plume encompasses the source area and a limited area along the eastbound right-of-way. Based on
the available data, shallow groundwater appears to flow to the southeast. The primary constituents
detected at concentrations above the NC 2L Standards are limited to benzene, ethylbenzene,
chloromethane, n-propylbenzene, and naphthalene (October 2019 monitoring results). Mann -Kendall
trend analyses indicated that benzene and/or naphthalene concentrations are decreasing or stable in
MW-1, MW-4 and MW-13. Although other VOCs were detected in these wells, their concentrations
were either below the NC 2L Standards or did not have sufficient data points above the 2L Standard for
the statistical analysis. With respect to sulfate, the Mann -Kendall shows a stable trend.
In accordance with the 2016 NCDEQ Decision & Implementation Guide, target analytes that
demonstrate concentrations of concern were compared to the Gross Contaminant Levels (GCLs) (Table
4). Benzene, chloromethane, ethylbenzene, naphthalene, and n-propylbenzene, are below the GCLs and
appear stable or decreasing in the areas of highest concentrations (Appendix 6). However, as
discussed below, NCDEQ continues to classify the Site as "High Risk".
In July 2017, SIES, on behalf of the NCDOT, submitted a Risk Reclassification Request for the Site to the
NCDEQ (SIES, 2017). The July 2017 Report supported the request using site history and analytical
results to determine trends in plume size (decreasing), contaminant mass (decreasing), center of plume
stability (stable), location of the plume within the NCDOT right-of-way, and no contaminant
concentrations detected in the non -potable wells. The NCDEQ reviewed the July 2017 Reclassification
Report, and requested confirmation that sulfate concentrations in well WSW-11 were not increasing.
Based on the results of the previous sampling events and the October 2019 sampling event, sulfate has
always been below the NC 2L Standard and has a stable trend. As a result, the NCDOT requests the
NCDEQ consider reclassifying the Site as Intermediate or Low Risk.

October 2019 Groundwater Monitoring Report
Former Preslar's Exxon
Midland, Cabarrus County, NC
REFERENCES
DAA Project No. 17117301-010701
NCDOT WBS # 34348.3.5
November 9, 2019
S&ME, 2001. Comprehensive Site Assessment, Preslar's Exxon, prepared by S&ME, 3118 Spring Forest
Road, Raleigh, North Carolina, August 27, 2001.
S&ME, 2002a. Comprehensive Site Assessment Addendum, Preslar's Exxon, prepared by S&ME, 3118
Spring Forest Road, Raleigh, North Carolina, January 25, 2002.
S&ME, 2002b. Comprehensive Site Assessment Addendum II, Preslar's Exxon, prepared by S&ME, 3118
Spring Forest Road, Raleigh, North Carolina, November 7, 2002.
Solutions-IES (SIES), 2005. Corrective Action Plan, FormerPreslar's Exxon, prepared by Solutions-IES,
Inc., 1101 Nowell Road, Raleigh, North Carolina, March 2005.
SIES, 2012. Corrective Action Plan Addendum, Former Preslor's Exxon, prepared by Solutions-IES, Inc.,
1101 Nowell Road, Raleigh, North Carolina, March 2005.
SIES, 2013. EAS Technology Evaluation Report, prepared by Solutions-IES, Inc., 1101 Nowell Road,
Raleigh, North Carolina, January 23, 2013.
SIES, 2015. Baseline Groundwater Monitoring Report, Former Preslar's Exxon, 907 Hwy 24127, Midland,
Cabarrus County, North Carolina, Groundwater Incident #73546, NCDOT Project # R-0675B,
NCDOT WBS # 34348.3.5, prepared by Solutions-IES, Inc., 1101 Nowell Road, Raleigh, North
Carolina, January 23, 2013.
SIES, 2016. March 2076 Groundwater Monitoring and April 2076 Injection Event Report, Former Preslar's
Exxon, 907 Hwy 24127, Midland, Cabarrus County, North Carolina, Groundwater Incident #73546,
NCDOT Project # R-0675B, NCDOT WBS # 34348.3.5, prepared by Solutions-IES, Inc., 1101
Nowell Road, Raleigh, North Carolina, May 18, 2016.
SIES, 2017, Former Preslar's Exxon Risk Reclassification Request, 901 Hwy 24/27, Midland, North
Carolina, Groundwater Incident No. 13543, UIC Permit W10300282, prepared by Solutions-IES, a
division of Draper Aden Associates, 1101 Nowell road, Raleigh, North Carolina, July 27, 2017.
10

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FORMER PRESLAR'S EXXON
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NC Firm License#C-0861 • Virginia Beach, VA
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FORMER PRESLAR'S EXXON
901 NC HWY 24/27 2
114 Etllnburgh South Drlve, SW200 . Richmond, VA •Hampton Roads, VA
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a Draper Aden Associates
Engineering • Surveying • Environmental Services
114Edinburgh South nrive, Sui[ 200 . Richmond, VA • Hampton Roads, VA
Cary, NC 27511 • Fayetteville, NC
919-873.1060 Faz: 919473,1174 •Blacksburg, VA
—.daacom .• Charlottesville, VA ' Northern Virginia
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WATER SUPPLY WELL LOCATIONS
FORMER PRESLAR'S EXXON
901 NC HWY 24/27
NCDOT PROJECT R-61513, WBS 34348.3.5
MIDLAND, CABARRUS COUNTY, NORTH CAROLINA
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FIGURE:
Engineering •Surveying •Environmental Services
FORMER PRESLAR'S EXXON
901 NC HWY 24/27
4
116 Edlnburgh South Drlve, Sulte 200 . Richmond, VA • Hampton Roads, VA
Cary, NC 2]511 • Fayetteville, NC
919473-1060 Faz: 919.873-1010 • Blacksburg, VA
w da 2. • Northern Virginia
NCDOT PROJECT R-61513, WBS 34348.3.5
•Charlottesville, VA
NC Firm License#C-0861 • Virginia Beach, VA
MIDLAND, CABARRUS COUNTY, NORTH CAROLINA

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aDraper Aden Associates SHALLOW GROUNDWATER POTENTIOMETRIC MAP - OCTOBER 2019
Engineering •Surveying •Environmental Services
FORMER PRESLAR'S EXXON
901 NC HWY 24/27 5
116 Edi.bu,h South Drlve, Sulte 200 . Richmond, VA •Hampton Roads, VA
Cary, NC2]511 •Fayettevil le, NC NCDOT PROJECT R-0615B, WBS 34348.3.5
919473-1060 Faz: 919.873-1010 • BlecNsttesville, bnrg, VA
VA
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NC Firm License#C-0861 Charlo•ViNorthern Virginia
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FIGURE:
aDraper Aden Associates BENZENE ISOCONCENTRATION MAP - OCTOBER 2019
Engineering •Surveying •Environmental Services
FORMER PRESLAR'S EXXON
901 NC HWY 24/27 6
116 Etllnburgh South Drlve, Sul[e 200 .Richmond, VA • Hampton Roads, VA
Cary, NC2]511 • Fayetteville, NC NCDOT PROJECT R-0615B, WBS 34348.3.5
919473-1060 Faz: 919.873-1010 • Blacksburg, VA
w da 2. • Charlottesville, VA • Northern Virginia
NC Firm License#C-0861 • Virginia Beach, VA MIDLAND, CABARRUS COUNTY, NORTH CAROLINA

TABLES

TABLE 1
Summary of Groundwater Elevation Data
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Well ID
Date
Installed
Date
Measured
Well Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Bottom
of Well
(ft bgs)
Top of Casing
Elevation
(ft amsl)'
Depth to
Water
(ft btoc)
Groundwater
Elevation
(ft amsl)
MW-1
7/16/1998
7/16/1998
5
5-25
25
663.79
11.00
652.79
7/5/2001
10.40
653.39
12/17/2001
13.72
650.07
6/25/2003
4.54
659.25
1/19/2004
8.74
655.05
7/14/2004
11.14
652.65
2/2/2005
7.77
656.02
12/20/2007
14.59
649.20
12/30/2008
8.08
655.71
3/26/2009
6.14
657.65
10/8/2009
11.93
651.86
4/7/2010
6.35
657.44
10/13/2010
9.34
654.45
4/25/2011
7.55
656.24
8/1/2012
12.97
650.82
4/10/2013
6.89
656.90
10/8/2013
10.04
653.75
4/28/2015
5.65
658.14
6/16/2015
663.04
9.81
653.23
8/11/2015
12.47
650.57
11/16/2015
7.03
656.01
2/29/2016
5.00
658.04
10/17/2016
8.77
654.27
3/13/2017
7.98
655.06
10/2/2017
11.05
651.99
10/8/2018
11.39
651.65
10/8/2019
11.54
651.50
MW-2
8/11/1998
8/11/1998
6
6-21.5
25
664.46
9.25
655.21
7/5/2001
10.43
654.03
12/17/2001
14.15
650.31
6/26/2003
4.15
660.31
1/19/2004
8.84
655.62
7/14/2004
11.10
653.36
2/2/2005
7.78
656.68
12/20/2007
14.90
649.56
12/30/2008
8.14
656.32
3/26/2009
6.00
658.46
10/8/2009
11.98
652.48
4/7/2010
6.11
658.35
10/13/2010
9.25
655.21
4/25/2011
7.46
657.00
8/1/2012
12.98
651.48
4/10/2013
6.80
657.66
10/8/2013
9.88
654.58
4/28/2015
5.48
658.98
6/16/2015
663.70
9.61
654.09
8/11/2015
12.35
651.35
11 /16/2015
6.91
656.79
2/29/2016
4.72
658.98
10/17/2016
8.60
655.10
3/13/2017
8.02
655.68
10/2/2017
11.05
652.65
10/8/2018
11.47
652.23
10/8/2019
11.46
652.24
1 of 7

TABLE 1
Summary of Groundwater Elevation Data
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Well ID
Date
Installed
Date
Measured
Well Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Bottom
of Well
(ft bgs)
Top of Casing
Elevation
(ft amsl)'
Depth to
Water
(ft btoc)
Groundwater
Elevation
(ft amsl)
MW-3
8/11/1998
8/11/1998
5
5-25
25
663.79
11.00
652.79
7/5/2001
11.04
652.75
12/17/2001
14.13
649.66
6/26/2003
5.92
657.87
1/19/2004
9.41
654.38
7/14/2004
11.94
651.85
2/2/2005
8.50
655.29
12/20/2007
14.95
648.84
12/30/2008
8.82
654.97
3/26/2009
7.07
656.72
10/8/2009
12.62
651.17
4/7/2010
7.33
656.46
10/13/2010
10.12
653.67
4/25/2011
8.40
655.39
8/1/2012
13.73
650.06
4/10/2013
7.72
656.07
10/8/2013
10.85
652.94
4/28/2015
6.81
656.98
6/16/2015
663.02
10.77
652.25
8/11/2015
13.35
649.67
11/16/2015
7.94
655.08
2/29/2016
6.17
656.85
10/17/2016
9.66
653.36
3/13/2017
8.81
654.21
10/2/2017
11.85
651.17
10/8/2018
12.04
650.98
10/8/2019
12.36
650.66
MW-4
8/11/1998
8/11/1998
5
6.5-21.5
21.5
664.45
12.48
651.97
7/5/2001
12.84
651.61
12/17/2001
15.38
649.07
6/25/2003
7.81
656.64
1/19/2004
11.15
653.30
7/14/2004
13.63
650.82
2/2/2005
10.40
654.05
12/20/2007
16.28
648.17
12/30/2008
10.88
653.57
3/26/2009
8.90
655.55
10/8/2009
14.41
650.04
4/7/2010
9.11
655.34
10/13/2010
12.15
652.30
4/25/2011
10.30
654.15
8/1/2012
15.50
648.95
4/10/2013
9.72
654.73
10/8/2013
12.78
651.67
4/28/2015
8.71
655.74
6/16/2015
663.68
12.58
651.10
8/11/2015
15.12
648.56
11/16/2015
10.12
653.56
2/29/2016
7.90
655.78
10/17/2016
11.81
651.87
3/13/2017
10.72
652.96
10/2/2017
13.75
649.93
10/8/2018
13.82
649.86
10/8/2019
14.23
649.45
2 of 7

TABLE 1
Summary of Groundwater Elevation Data
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Well ID
Date
Installed
Date
Measured
Well Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Bottom
of Well
(ft bgs)
Top of Casing
Elevation
(ft amsl)'
Depth to
Water
(ft btoc)
Groundwater
Elevation
(ft amsl)
MW-5
8/17/1998
8/17/1998
50
50-60
60
664.27
14.15
650.12
7/5/2001
10.10
654.17
12/17/2001
14.80
649.47
6/25/2003
6.02
658.25
1/19/2004
8.87
655.40
7/14/2004
11.84
652.43
2/2/2005
8.98
655.29
12/20/2007
15.61
648.66
12/30/2008
10.53
653.74
3/26/2009
7.47
656.80
10/8/2009
12.61
651.66
4/7/2010
7.00
657.27
10/13/2010
10.36
653.91
4/25/2011
5.48
658.79
8/1/2012
14.15
650.12
4/10/2013
8.66
655.61
10/8/2013
10.89
653.38
4/28/2015
6.67
657.60
6/16/2015
663.52
11.44
652.08
8/11/2015
12.93
650.59
11/16/2015
6.97
656.55
2/29/2016
6.02
657.50
10/17/2016
9.65
653.87
3/13/2017
8.83
654.69
10/2/2017
11.59
651.93
10/8/2018
11.11
652.41
10/8/2019
12.01
651.51
MW-6
7/3/2001
7/6/2001
8
8 18
18
656.79
6.59
650.20
12/17/2001
8.68
648.11
6/25/2003
5.88
650.91
1/19/2004
6.55
650.24
7/14/2004
7.47
649.32
2/2/2005
4.46
652.33
12/20/2007
9.24
647.55
12/30/2008
4.98
651.81
3/26/2009
2.99
653.80
10/8/2009
9.94
646.85
4/7/2010
3.31
653.48
10/13/2010
5.98
650.81
4/25/2011
4.03
652.76
8/1/2012
9.19
647.60
4/10/2013
4.43
652.36
10/8/2013
6.44
650.35
4/28/2015
2.98
653.81
6/16/2015
655.95
6.69
649.26
8/11/2015
9.02
646.93
11/16/2015
4.00
651.95
2/29/2016
2.20
653.75
10/17/2016
5.64
650.31
3/13/2017
4.11
651.84
10/2/2017
7.63
648.32
10/8/2018
7.32
648.63
10/8/2019
7.96
647.99
3 of 7

TABLE 1
Summary of Groundwater Elevation Data
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Well ID
Date
Installed
Date
Measured
Well Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Bottom
of Well
(ft bgs)
Top of Casing
Elevation
(ft amsl)'
Depth to
Water
(ft btoc)
Groundwater
Elevation
(ft amsl)
MW 7
7/3/2001
7/6/2001
8
8 18
18
652.10
9.90
642.20
12/17/2001
5.52
646.58
6/25/2003
4.13
647.97
1/19/2004
1.58
650.52
7/14/2004
4.48
647.62
2/2/2005
0.73
651.37
12/20/2007
NM
NM
12/30/2008
1.35
650.75
3/26/2009
0.50
651.60
10/8/2009
4.09
648.01
4/7/2010
0.65
651.45
10/13/2010
3.08
649.02
4/25/2011
2.61
649.49
8/1/2012
5.82
646.28
4/10/2013
1.00
651.10
10/8/2013
3.20
648.90
4/28/2015
1.43
650.67
6/16/2015
651.30
4.20
647.10
8/11/2015
5.61
645.69
11/16/2015
2.74
648.56
2/29/2016
0.68
650.62
10/17/2016
2.34
648.96
3/13/2017
1.63
649.67
10/2/2017
4.10
647.20
10/8/2018
3.87
647.43
10/8/2019
4.75
646.55
MW-8
7/2/2001
7/5/2001
10
1
12-20
1
20
1
660.73
11.50
649.23
12/14/2001
12.40
648.33
6/25/2003
6.25
654.48
1/19/2004
8.52
652.21
7/14/2004
11.26
649.47
2/2/2005
7.76
652.97
12/20/2007
13.19
647.54
12/30/2008
8.20
652.53
3/26/2009
6.73
654.00
10/8/2009
11.74
648.99
4/7/2010
7.19
653.54
10/13/2010
9.65
651.08
4/25/2011
7.99
652.74
8/1/2012
12.92
647.81
4/10/2013
7.41
653.32
10/8/2013
10.28
650.45
4/28/2015
7.01
653.72
6/16/2015
659.99
1
10.31
649.68
8/11/2015
12.70
647.29
11/16/2015
7.76
652.23
2/29/2016
6.15
653.84
10/17/2016
9.27
650.72
3/13/2017
8.14
651.85
10/2/2017
11.22
648.77
10/8/2018
11.09
648.90
10/8/2019
1 11.78
648.21
4 of 7

TABLE 1
Summary of Groundwater Elevation Data
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Well ID
Date
Installed
Date
Measured
Well Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Bottom
of Well
(ft bgs)
Top of Casing
Elevation
(ft amsl)'
Depth to
Water
(ft btoc)
Groundwater
Elevation
(ft amsl)
MW-9
10/22/2001
10/24/2001
10
10-25
25
665.15
16.15
649.00
12/17/2001
16.32
648.83
6/25/2003
9.35
655.80
1/19/2004
11.96
653.19
7/14/2004
14.45
650.70
2/2/2005
11.29
653.86
12/20/2007
17.06
648.09
12/30/2008
11.84
653.31
3/26/2009
9.91
655.24
10/8/2009
15.24
649.91
4/7/2010
10.03
655.12
10/13/2010
13.07
652.08
4/25/2011
11.21
653.94
8/1/2012
16.34
648.81
4/10/2013
10.79
654.36
10/8/2013
13.66
651.49
4/28/2015
9.75
655.40
6/16/2015
664.37
13.43
650.94
8/11/2015
15.95
648.42
11/16/2015
11.04
653.33
2/29/2016
8.82
655.55
10/17/2016
12.75
651.62
3/13/2017
11.55
652.82
10/2/2017
14.64
649.73
10/8/2018
14.70
649.67
10/8/2019
15.06
649.31
MW-10
3/25/2009
3/26/2009
5
5-15
15
662.82
5.51
657.31
10/8/2009
11.82
651.00
4/7/2010
6.16
656.66
10/13/2010
9.21
653.61
4/25/2011
7.41
655.41
8/1/2012
12.87
649.95
4/10/2013
6.72
656.10
10/8/2013
9.90
652.92
4/28/2015
5.41
657.41
6/16/2015
662.96
9.56
653.40
8/11/2015
12.26
650.70
11/16/2015
6.82
656.14
2/29/2016
4.90
658.06
10/17/2016
8.63
654.33
3/13/2017
7.84
655.12
10/2/2017
10.93
652.03
10/8/2018
11.26
651.70
10/8/2019
11.42
651.54
5 of 7

TABLE 1
Summary of Groundwater Elevation Data
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Well ID
Date
Installed
Date
Measured
Well Casing
Depth
ft bg
s) s g)
Screened
Interval
(ft bgs)
Bottom
of Well
(ft bgs)
Top of Casing
Elevation
(ft amsl)'
Depth to
Water
(ft btoc)
Groundwater
Elevation
(ft amsl)
MW-11
3/25/2009
3/26/2009
6
6-16
16
663.85
11.03
652.82
10/8/2009
13.54
650.31
4/7/2010
7.31
656.54
10/13/2010
10.54
653.31
4/25/2011
9.27
654.58
8/1/2012
14.30
649.55
4/10/2013
6.38
657.47
10/8/2013
11.78
652.07
4/28/2015
7.16
656.69
6/16/2015
663.97
11.56
652.41
8/11/2015
13.85
650.12
11/16/2015
6.85
657.12
2/29/2016
5.88
658.09
10/17/2016
10.39
653.58
3/13/2017
9.71
654.26
10/2/2017
12.54
651.43
10/8/2018
11.36
652.61
10/8/2019
13.10
650.87
MW-12
3/25/09
3/26/2009
9
9-19
19
664.61
10.43
654.18
10/8/2009
15.55
649.06
4/7/2010
10.62
653.99
10/13/2010
13.57
651.04
4/25/2011
11.75
652.86
8/1/2012
16.83
647.78
4/10/2013
11.31
653.30
10/8/2013
14.20
650.41
4/28/2015
10.01
654.60
6/16/2015
664.72
14.04
650.68
8/11/2015
16.52
648.20
11/16/2015
11.61
653.11
2/29/2016
9.46
655.26
10/17/2016
13.25
651.47
3/13/2017
12.10
652.62
10/2/2017
15.19
649.53
10/8/2018
15.17
649.55
10/8/2019
15.61
649.11
6 of 7

TABLE 1
Summary of Groundwater Elevation Data
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Well ID
Date
Installed
Date
Measured
Well Casing
Depth
(ft bgs)
Screened
Interval
(ft bgs)
Bottom
of Well
(ft bgs)
Top of Casing
Elevation
(ft amsl)'
Depth to
Water
(ft btoc)
Groundwater
Elevation
(ft amsl)
MW-13
3/25/09
3/26/2009
10/8/2009
4/7/2010
10/13/2010
4/25/2011
8/1/2012
4/10/2013
10/8/2013
4/28/2015 9
6/16/2015
8/11/2015
11/16/2015
2/29/2016
10/17/2016
3/13/2017
10/2/2017
10/8/2018
10/8/2019
919
19
663.22
7.45
655.77
13.99
649.23
8.93
654.29
11.65
651.57
9.81
653.41
15.09
648.13
9.23
653.99
12.33
650.89
8.29
654.93
663.35
12.18
651.17
14.75
648.60
9.43
653.92
7.75
655.60
11.19
652.16
10.19
653.16
13.24
650.11
13.36
649.99
13.78
649.57
Notes:
ft bgs = feet below ground surface
ft amsl = feet above mean sea level
ft btoc = feet below top of casing
NM = Not Measured, MW-7 could not be located during the 12/20/07 sampling event.
Data before 6/25/03 are from Comprehensive Site Assessment Addendum dated January 25, 2002 prepared by S&ME, Inc.
1 - All monitoring, injection and water supply well locations were surveyed by NCDOT on June 16, 2015. Top of casing elevations were
determined for all monitoring wells.
7 of 7

TABLE 2
Water Supply Well Information
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-061513, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Distance
Property Owner Information
Connected to
Well ID
From Site
Well In Use
Well Use
Municipal
Comments
(ft.)
Name
Address
Phone Number
Tax -Parcel Number
Water Supply
Operational Wells in the Vicinity of the Site
Upgradient well. Access to sample well was
WSW-9
720
Mr. L.E. Dorton Sr.
700 NC Hwy 24/27,
[phone]
5534-37-8848
Yes
Potable
No
requested. Owner acepted registered letter, but
Midland, NC 28107
no response received.
Side gradient well. Access to sample well was
requested. Owner acepted registered letter, but
11880 Preslar Lane,
WSW-3
740
Mr. Ronnie Johns
Unknown
5534-49-6994
Yes
Potable
No
no response received. Reclassification also
Midland, NC 28107
hampered by lack of right-of-way to install
municipal water.
Residences That Are Connected to Municipal Water But Have Retained Use of Their Well for Irrigation
830 NC Hwy 24/27,
WSW-11
250
Ms. Ida Thomas
[phone]
5534-49-4044
Yes
Irrigation
Yes
Well is on annual sampling schedule
Midland, NC 28017
750 NC Hwy 24/27,
Outside 250' radius, but on annual sampling
WSW-10
435
Mr. Wilson E. Hooks
[phone]
5534-49-0076
Yes
Irrigation
Yes
Midland, NC 28017
schedule.
Mr. and Mrs. George and
932 NC Hwy 24/27,
WSW-12
450
[phone]
5534-49-8018
Yes
Irrigation
Yes
Outside 250' radius
Shirley Plummer
Midland, NC 28107
Residences that are Connected to Municipal Water and Have Abandoned Their Previous Supply Well
12075 Preslar Lane,
WSW-6
170
Mr. Donald R. Preslar
[phone]
5534-49-0492
Abandoned
None
Yes
Well Abandoned
Midland, NC 28107
901 NC Hwy 24/27,
WSW-5
200
Mr. Walter R. Preslar
[phone]
5534-49-4415
Abandoned
None
Yes
Well Abandoned
Midland, NC 28107
901 NC Hwy 24/27,
WSW-4
310
Mr. Walter R. Preslar
[phone]
5534-49-4506
Abandoned
None
Yes
Well Abandoned
Midland, NC 28107
676 NC Hwy 24/27,
WSW-8
980
Mr. L.E. Dorton Jr.
Midland, NC 28017
Unknown
5534-37-8848
Abandoned
None
Yes
Well Abandoned

TABLE 3
Summary of Field Parameters
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-061511, WEIS 34348.3.5
Incident #13543
DAA Project No. 171107301-010701
Well ID
Date
pH
(SU)
Temperature
(IC)
Specific
Conductivity
(PS/cm)(m9/L)
DO
ORP
(mV)
Baseline
6A3
20.32
625
0.36
76.2
6/16/2015
6.21
23.38
1155
0.18
-25.2
8/10/2015
5.29
21.30
848
0.76
65.9
11/16/2015
6.49
21.17
1058
0.46
-34A
3/1/2016
6.82
17A9
1337
0.23
0.9
MW-1
10/17/2016
6.41
23.24
700
0.25
21.0
3/14/2017
6.37
17.10
454
1.16
33.2
10/2/2017
6.61
21.90
734
0.12
-122.2
10/9/2018
6.57
22.20
430
0.20
35.0
10/8/2019
6.56
22.00
624
0.16
-113.3
Baseline
6.41
17.60
809
0.74
101.5
6/17/2015
5.60
19.75
886
0.19
31.8
8/11/2015
6.37
20.17
801
0.22
134.7
11/16/2015
6.64
19.60
734
0.34
96.8
3/1/2016
6.74
16.63
842
0.35
128.4
MW-3
10/18/2016
6.51
21.87
736
0.26
2.1
3/14/2017
6.48
16.20
816
0.29
-37.7
10/2/2017
6.75
24.20
829
0.23
-7.5
10/9/2018
6.80
21.40
690
0.13
51.1
10/8/2019
6.65
21.10
874
0.22
-23.2
Baseline
6.30
18.11
759
0.56
87.6
6/17/2015
6.46
19.29
998
0.93
-64.8
8/11/2015
6.30
20.62
1047
0.17
-174.5
11/17/2015
6.43
17.57
566
0.30
-88.0
3/1/2016
6.42
17.70
988
0.21
-113.1
PAW-4
10/18/2016
6.22
21.26
610
0.26
-243.0
3/13/2017
6.29
13AO
569A
0.80
-35.1
10/3/2017
6.43
22.70
576
0.19
-222.2
10/9/2018
6.53
21.70
535
0.10
-164.9
10/8/2019
6.50
21.10
819
0.15
-168.9
Baseline
6.44
16.88
1526
0.15
30.4
6/16/2015
6.39
22.70
1531
0.63
5.9
8/11/2015
6.06
19.81
1333
0.84
7.0
11/17/2015
6.75
18.14
1450
0.45
-69.5
MW-12
2/29/2016
6.44
16.08
1693
0.32
51.9
10/18/2016
6.66
20.57
1117
0.22
-40.5
3/14/2017
6.77
14.10
1181
0.90
-22.3
10/3/2017
6.79
19.37
1031
0.33
-52.7
10/9/2018
6.71
21.10
1245
0.13
-58.9
10/8/2019
6.81
20.50
1154
0.66
-112.6
Baseline
6.39
16.86
1075
0.16
13.7
6/17/2015
6.16
21.01
1043
0.24
-8A
8/11/2015
6.51
20.26
1212
0.18
-210.4
11/17/2015
6.68
18.32
677
0.23
-88.3
MW-13
3/1/2016
6.51
15.38
1231
0.29
-90.3
10/18/2016
6.52
21.22
900
0.28
-106.8
3/14/2017
6.56
15.70
926
0.29
-172.1
10/3/2017
6.76
20.30
1082
0.14
-224.9
10/9/2018
6.87
21.70
830
0.11
-111.1
10/8/2019
6.74
20.50
1173
0.76
-138.1
Notes:
SU = Standard units
OC = degrees centigrade
pS/cm = Microsiemens per centimeter
DO = Dissolved oxygen
mg/L = milligrams per liter
ORP = Oxidation Reduction Potential
my = Millivolts
Baseline samples collected April 28, 2015.
1 of 1

TABLE
Summary of Post -Injection Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarms County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method VOCs by EPA Method 601/602 Extended (ug/L)
EPA Method 300.0 (mg/L)
Well ID
Date
e
a
1
F
o
x
H
a
a
f0
a
o
-
o
.2
V
Eo
'7
N
r-
a
E
s"
a
n
2
y
ISA NCAC 2L Standards
1
600
20
70
600
500
70
70
70
3
400
400
70
6
250
Gross Contamination Levels (GCLs)
5000
84500
20000
70,000
260,000
85,500
6,900
8,500
25,000
3,000
28,500
25,000
30,000
6,000
NE
5/5/2015 Baseline
15.0
17.0
1.8
15.1
1.5
5.2
<0.5
NA
NA
<0.5
NA
NA
NA
<2.0
35.3
6/16/2015 Post Injection
5.3
4.2
<1.0
<1.0
<1.0
2.7
<0.5
NA
NA
<0.5
NA
NA
NA
3.1
461
8/11/2015 Post Injection
15.7
19.7
<0.5
2.4
0.73
<0.5
<0.5
1.5
7.2
<0.5
4.3
<0.5
4.6
6
210
11/16/2015 Post Injection
4.0
7.1
<1.0
<1.0
0.61
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
2.4
313
MW-1
3/1/2016 Post Injection
1.3
2.6
<1.0
<1.0
<0.5
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
219
10/17/2016 Post Injection
<0.5
0.56
<0.5
0.51
<0.5
<1.0
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
124
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<2.0
55.8
10/2/2017
<0.5
<0.5
<0.5
1.1
<0.5
<1.0
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<2.0
89.0
10/9/2018
<0.5
2.8
<1.0
<0.5
<0.5
<1.0
<1.0
<0.5
0.35 J
<1.0
<0.5
<0.5
<0.5
<1.0
20
10/8/2019
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<2.0
15.8
5/5/2015 Baseline
503
228
<5.0
23.2
221
598
<0.5
NA
NA
<0.5
NA
NA
NA
33.9
3.3
6/16/2015 Post Injection
733
440
<5.0
38
266
694
<0.5
NA
NA
<0.5
NA
NA
NA
65.2
19.5
8/11/2015 Post Injection
960
644
4.8
91.9
330
962
<0.5
<2.5
25.2
<0.5
419
71.1
64.3
125
<2.0
11/17/2015 Post Injection
419
609
<2.5
<5.0
162
927
<0.5
<2.5
<2.5
<0.5
<2.5
<2.5
<2.5
118
<2.0
MW-4
3/1/2016 Post Injection
159
202
<2.5
<5.0
71
258
<0.5
<2.5
<2.5
<0.5
<2.5
<2.5
<2.5
19.4
70.3
10/18/2016 Post Injection
287
434
<2.0
8.5
53.7
241.5
<0.5
<2.0
18.0
<0.5
196
15.3
46.1
20.1
2.4
3/13/2017
155
319
<1.2
7.4
29.8
154.6
<0.5
2.2
14.3
<0.5
174
15.0
38.8
27.2
<2.0
10/3/2017
391
604
<2.0
12.8
60.2
138.8
<0.5
<2.0
24.8
<0.5
342
34.8
62.4
107
<1.0
10/9/2018
650
910
<1.0
19
110
210
<0.5
7.4
46
<0.5
310
30
110
98
<2.0
10/8/2019
505
669
<2.5
14.9
27.8
62.5
11.5
<2.5
35.9
6.0
110
<2.5
101
30.7
29.4
5/5/2015 Baseline
88.4
434
<1.0
4.9
95.1
846
<0.5
NA
NA
<0.5
NA
NA
NA
286
7.5
6/16/2015 Post Injection
40.8
179
<1.0
1.8
23.4
369
<0.5
NA
NA
<0.5
NA
NA
NA
91.2
33.6
8/11/2015 Post Injection
171
694
1
8.3
84.1
1113
<0.5
<0.5
69.8
<0.5
1150
102
189
325
53.8
11/16/2015 Post Injection
15.3
152
<1.0
<1.0
10.6
221
<0.5
<1.0
<1.0
<0.5
<1.0
<1.0
<1.0
68.2
6.2
MW-13
3/1/2016 Post Injection
46.9
333
<1.0
<1.0
22.9
426
<0.5
<1.0
<1.0
<0.5
<1 0
<1.0
<1.0
61.2
23.4
10/18/2016 Post Injection
17.9
137
<1.0
0.86
3.2
66.4
<0.5
3.7
22.8
<0.5
136
8.2
56.6
29.9
21.4
3/14/2017
26.6
182
<0.5
1.3
4.6
1 59.0
<0.5
4.7
29.4
<0.5
187
8.8
76.1
17.9
3.4
10/3/2017
63.9
427
<1.2
3.0
14.5
122.8
<0.5
<1.2
37.2
<0.5
189
<1.2
97.0
195
3.2
10/9/2018
26
210
<1.0
0.64
8.8
210
<0.5
5.0
41
<0.5
130
5.0
94
120
<2.0
10/8/2019
25.2
64.8
<0.5
3.7
3.4
23.3
<0.5
<0.5
10.8
<0.5
4.6
<0.5
24.3
16.6
32.7
1 of 3

TABLE
Summary of Post -Injection Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method VOCs by EPA Method 601/602 Extended (ug/L)
EPA Method 300.0 (mg/L)
Well ID
Date
c
"
L
c
X
a
-
-
c
S
y
i.
Q
p
0
n
a
T
E
F
d
a
_
$
E
P7
c
a
n
c
e
Y
2
N
ISA NCAC 2L Standards
1
600
20
70
600
500
70
70
70
3
400
400
70
6
250
Perimeter Compliance Wells
5/5/2015 Baseline
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<1.0
NA
NA
<1.0
NA
NA
NA
<2.0
30.0
6/16/2015 Post Injection
<1.0
-1.0
<1.0
<1.0
<1.0
<2.0
<1.0
NA
NA
<1.0
NA
NA
NA
<2.0
53.5
8/11/2015 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
77.5
11/16/2015 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
39.3
MW-3
3/1/2016 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
47.3
10/16/2016 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
94.6
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<11.5
<0.5
<0.5
<0.5
<0.5
<2.0
1.
10/2/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
1 <0.5
<0.5
<0.5
<0.5
<0.5
<2.0
91.7
10/9/2018
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
96
10/8/2019
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
81.5
5/5/2015 Baseline
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<1.0
NA
NA
<1.0
NA
NA
NA
<2.0
24.7
6/16/2015 Post Injection
<1.0
<1.0
<1.0
1.3
<1.0
<2.0
<1.0
NA
NA
<1.0
NA
NA
NA
<2.0
14.3
8/11/2015 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
9.2
11/16/2015 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
57.7
3/1/2016 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
34.6
MW-12
10/18/2016 Post Injection
<0.5
<0.5
<1.0
1.7
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
27.4
3/14/2017
<0.5
<0.5
<0.5
0.85
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11.1
10/3/2017
<0.5
<0.5
<0.5
2.0
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
4.8
10/9/2018
<0.5
<0.5
<1.0
2.2
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
84
10/8/2019
0.55
2.7
<0.5
1.1
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
0.86
<0.5
0.8
<2.0
9.7
Water Supply Wells
5/5/2015 Baseline
--
--
--
--
--
--
__
__
__
__
__
__
--
6/16/2015 Post Injection
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<1.0
NA
NA
<1.0
NA
NA
NA
<2.0
39.2
8/11/2015 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
38.4
11/16/2015 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
38.6
3/1/2016 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
37.8
WSW-10
10/16/2016 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
34.8
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
NA
10/3/2017
<0.5
<0.5
<0.5
<0.5
1 <0.5
<1.0
1 <0.5
1 <0.5
1 <0.5
1 <0.5
<0.5
<0.5
<0.5
<2.0
37.8
10/9/2018
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
36
10/9/2019
<0.5
<0.5
<0.5
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<03
<0.5
<0.5
<0.5
<2.0
37.5
2of3

TABLE
Summary of Post -Injection Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 34348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method VOCs by EPA Method 601/602 Extended (ug/L)
EPA Method 300.0 (mg/L)
0
n
Well ID
Date
o
�.
g
«
«%
E
«
E
0
e
A*a
L
c
X
a
Q
F
H
n
as.
ao
m
m
S
f
H
U
C
2
N
ISA NCAC 2L Standards
1
600
20
70
600
500
70
70
70
3
400
400
70
6
250
5/5/2015 Baseline
<1.0
<1.0
<1.0
<U
<1.0
<2.0
<1.0
NA
NA
<1.0
NA
NA
NA
<2.0
32.1
6/16/2015 Post Injection
<1.0
-1.0
<1.0
<1.0
<1.0
<2.0
<1.0
NA
NA
<1.0
NA
NA
NA
<2.0
115
8/11/2015 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
178
11/16/2015 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
104
3/1/2016 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
78
WSW-11
10/16/2016 Post Injection
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
118
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
NA
10/3/2017
<0.5
<0.5
1 <0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
59.5
10/9/2018
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
39
10/9/2019
<0.5
<0.5
<0.5
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
42.8
Notes:
ug/L = micrograms per liter
mg/L = milligrams per liter
NA = Not analyzed
NE = Not established
Bold values indicate detected constituents
Shaded values exceed the NCAC 2L Groundwater Standards.
3 of 3

TABLE 5
Summary of Historical Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 343348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method
VOCs by EPA Method 6200B (ug/L)
Well ID
Start Date
Collected
1,2-
Dichloroethane
1,2-
Dichloro ro ane
Benzene
Ethylbenzene
MTBE
IPE
Toluene
Total
X lenes
sec-
But Ibenzene
Isopropylbenzene
1,2,4-
Trimeth Ibenzene
1,3,5-
Trimeth Ibenzen
n-Propylbenzene
Naphthalene
ISA NCAC 2L Standards
0.4
0.6
1
600
20
70
600
S00
70
70
400
400
70
6
Gross Contamination Levels (GCLs)
400
600
5,000
84,500
20,000
70,000
260,000
1 85,500
8,500
25,000
28,500
25,000
30,000
6,000
MONITORING
WELLS
MW-1
7/17/1998
<1.0
ND
241
82.5
6,580
2,300
103
145
1
Not included on target compound list until August 2015
NA
7/5/2001
<1.0
ND
1000
310
1,300
1,300
85
170
20
6/25/2003
<1.0
ND
490
69
1,200
1,300
10
47
NA
1/20/2004
<10
ND
160
55
180
350
<10
<30
<50
7/14/2004
<1.0
<1.0
270
270
69
140
26
140
57
2/2/2005
<1.0
<1.0
200
180
58
190
10
81
33
12/20/2007
<50
<50
190
<50
102
728
<50
<100
<100
12/30/2008
<1.0
<1.0
120
61
34
120
4.4
17.3
9.2
10/8/2009
<1.0
<1.0
480
1 290
49
310
1 38
195
48
4/7/2010
<1.0
<1.0
200
170
34
160
25
61
19
10/13/2010
<1.0
<1.0
280
240
60
280
8.1
65.6
39
4/25/2011
<1.0
<1.0
77.4
53.5
41.9
167
5.4
26.5
7.9
8/2/2012
<1.0
<1.0
223
193
4.3
36.6
12.7
37.3
27.2
4/10/2013
<1.0
<1.0
18.5
10.5
<1.0
3.7
<1.0
<2.0
<2.0
10/8/2013
<1.0
<1.0
59.1
32
3.0
14.4
1.4
2.4
2.9
5/4/2015
<1.0
<1.0
15
17
1.8
15.1
1.5
5.2
<2.0
Full Scale
Injection
6/16/2015
<1.0
<1.0
5.3
4.2
<1.0
<1.0
<1.0
2.7
<2.0
8/11/2015
<0.5
<0.5
15.7
19.7
<0.5
2.4
0.73
<0.5
1.5
7.2
4.3
<0.5
4.6
6
11/16/2015
<0.5
<0.5
4
7.1
<0.5
<0.5
0.61
<1.0
<0.5
1.5
1.6
<0.5
0.69
2.4
3/1/2016
<0.5
<0.5
1.3
2.6
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/17/2016
<0.5
<0.5
<0.5
0.6
<0.5
0.51
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/2/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
1 <0.5
<0.5
2.8
<1.0
1 <0.5
<0.5
1 <1.5
<0.5
0.35 J
<0.5
<0.5
<0.5
<1.0
10/8/2019
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
MW-2
8/11/1998
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Not included on target compound list until August 2015
NA
7/5/2001
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<5.3
6/26/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
NA
1/20/2004
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
7/14/2004
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<1.0
2.3 J
<5.0
2/2/2005
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
12/20/2007
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
12/30/2008
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/8/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
4/7/2010
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
4/25/2011
<1.0
<1.0
<1.0
4.3
<1.0
<1.0
<1.0
3.5
4.3
8/2/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/8/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
5/4/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/16/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
3/1/2016
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/18/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/13/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/2/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
1.7
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
1 of 8

TABLE 5
Summary of Historical Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 343348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method
VOCs by EPA Method 6200B (ug/L)
Well ID
Start Date
Collected
1,2-
Dichloroethane
1,2-
Dichloro ro ane
Benzene
Ethylbenzene
MTBE
IPE
Toluene
Total
X lenes
sec-
But Ibenzene
Isopropylbenzene
1,2,4-
Trimeth Ibenzene
1,3,5-
Trimeth Ibenzen
n-Propylbenzene
Naphthalene
15A NCAC 2L Standards
0.4
0.6
1
600
20
70
600
S00
70
70
400
400
70
6
Gross Contamination Levels (GCLs)
400
600
5,000
84,500
20,000
70,000
260,000
85,500
8,500
25,000
28,500
25,000
30,000
6,000
MW-3
8/11/1998
<1.0
ND
<1.0
<1.0
432
190
5.6
52.6
Not included on target compound list until August 2015
NA
7/5/2001
<1.0
ND
<1.0
<1.0
40
24
<1.0
<1.0
<5.1
6/26/2003
<1.0
ND
<1.0
<1.0
30
32
<1.0
<3.0
NA
1/20/2004
<1.0
ND
<1.0
<1.0
5.6
3.3 J
<1.0
<3.0
5.9
7/14/2004
<1.0
<1.0
<1.0
<1.0
3.3 J
<5.0
<1.0
2.1 J
4.5 J
2/2/2005
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
10
12/20/2007
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
12/30/2008
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
2.5
10/8/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
4/7/2010
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
4/25/2011
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1 <2.0
<2.0
8/1/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/8/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
5/5/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/16/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
3/1/2016
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/18/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/2/2017
<0.5
<0.5
<0.5
<0.5
<0.5
4.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
10/8/2019
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
1 <0.5
1 <0.5
1 <0.5
1 <0.5
<2.0
MW-4
8/11/1998
<1.0
ND
762
180
1,780
3,440
968
637
Not included on target compound list until August 2015
NA
7/5/2001
<1.0
ND
3,100
590
Soo
5,000
810
1,560
So
6/25/2003
<1.0
ND
4,100
1,600
220
2,300
1 2,800
4,400
NA
1/20/2004
<40
ND
4,500
1,400
190J
1,600
9,400
8,200
520
7/14/2004
10
S.oJ
7,000
3,400
290
2,800
13,000
17,000
1,700
2/2/2005
<500
<500
6,500
4,300
<500
3,300
15,000
18,000
3,100
12/20/2007
<50
<50
2,520
2,520
<50
<50
2,540
8,100
744
12/30/2008
<10
<10
250
810
<50
94
390
2,460
270
10/8/2009
<10
<10
1,600
1,600
<50
320
620
4,160
390
4/7/2010
<10
<10
1,100
1,400
<50
310
1,300
4,700
410
10/13/2010
<1.0
<1.0
600
1,100
180
200
440
3,190
410
4/25/2011
<5.0
<5.0
749
631
<5.0
So.,
519
2,070
176
6/21/2012
Pilot Study EAS9 Injection
8/1/2012
<5.0
<5.0
1,100
1 790
<5.0
72.9
504
2,020
226
4/10/2013
<2.0
<2.0
238
173
<2.0
12.3
107
413
29.8
10/8/2013
<2.0
<2.0
924
782
2.5
42.6
583
2,050
198
5/5/2015
<5
<5
503
228
<5
23.2
221
598
33.9
Full Scale Injection
6/16/2015
<5
<5
733
440
<5
38
266
694
65.2
8/11/2015
<2.5
<2.5
960
644
4.8
91.9
330
962
<2.5
25.2
419
71.1
64.3
125
11/17/2015
<2.0
<2.0
419
609
<2.0
15.8
162
927.3
<2.0
33.9
<8.0
<8.0
87
118
3/1/2016
<0.5
<0.5
159
202
<0.5
4.9
71
258.4
<0.5
11.2
166
17.8
32.5
19.4
10/18/2016
<0.5
<0.5
287
434
<2
8.5
53.7
241.5
<2
18.0
196.0
15.3
46.1
20.1
3/13/2017
<1.2
<1.2
155
319
<1.2
7.4
29.8
154.6
2.2
14.3
174
15.0
38.8
27.2
10/3/2017
<2.0
<2.0
391
604
<2.0
12.8
60.2
138.8
<2.0
24.8
342
34.8
62.4
107
10/9/2018
<0.5
<0.5
650
910
<1.0
19
110
210
7.4
46
310
30
110
98
10/8/2019
1 <0.5
<0.5
1 505
1 669
<2.5
14.9
27.8
1 62.5
<2.5
1 35.9
1 110
1 <2.5
1 101
30.7
2of8

TABLE 5
Summary of Historical Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 343348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method
VOCs by EPA Method 6200B (ug/L)
Well ID
Start Date
Collected
1,2-
Dichloroethane
1,2-
Dichloro ro ane
Benzene
Ethylbenzene
MTBE
IPE
Toluene
Total
X lenes
sec-
But Ibenzene
Isopropylbenzene
1,2,4-
Trimeth Ibenzene
1,3,5-
Trimeth Ibenzen
n-Propylbenzene
Naphthalene
15A NCAC 2L Standards
0.4
0.6
1
600
20
70
600
S00
70
70
400
400
70
6
Gross Contamination Levels (GCLs)
400
600
5,000
84,500
20,000
70,000
260,000
85,500
8,500
25,000
28,500
25,000
30,000
6,000
MW-5 (deep)
8/17/1998
<1.0
ND
1.5
3.2
12.3
4.3
9.2
12.3
Not included on target compound list until August 2015
NA
7/5/2001
<1.0
ND
<1.0
<1.0
9.2
2.9
3
4.6
<5.0
6/25/2003
<1.0
ND
<1.0
<1.0
6.8
<5.0
<1.0
<3.0
NA
1/20/2004
<1.0
ND
<1.0
<1.0
7.9
1.6J
<1.0
<3.0
<5.0
7/14/2004
<1.0
<1.0
<1.0
<1.0
5.5
<5.0
<1.0
1.8 J
<5.0
2/2/2005
<1.0
<1.0
<1.0
<1.0
3.9
<1.0
<1.0
<1.0
<2.0
12/20/2007
<1.0
<1.0
<1.0
<1.0
2
<1.0
<1.0
<1.0
<2.0
12/30/2008
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/8/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
4/7/2010
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
4/25/2011
<1.0
1 <1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1 <2.0
<2.0
8/2/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/9/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
5/4/2015
<1.0
<1.0
4.7
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/16/2015
<0.5
<0.5
2.9
<0.5
<0.5
<0.5
0.75
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
2/29/2016
<0.5
1 <0.5
<0.5
<0.5
<0.5
<0.5
<0.5
1 <1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/17/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/13/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/2/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
MW-6
7/6/2001
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Not included on target compound list until August 2015
<5.1
6/25/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
NA
1/20/2004
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
7/14/2004
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<1.0
1.8 J
<5.0
2/2/2005
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
12/20/2007
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
12/30/2008
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/9/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
4/7/2010
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1 0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
4/25/2011
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/2/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/9/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
5/4/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/16/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
2/29/2016
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/18/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/3/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
1 <0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
3 of 8

TABLE 5
Summary of Historical Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 343348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method
VOCs by EPA Method 6200B (ug/L)
Well ID
Start Date
Collected
1,2-
Dichloroethane
1,2-
Dichloro ro ane
Benzene
Ethylbenzene
MTBE
IPE
Toluene
Total
X lenes
sec-
But Ibenzene
Isopropylbenzene
1,2,4-
Trimeth Ibenzene
1,3,5-
Trimeth Ibenzen
n-Propylbenzene
Naphthalene
15A NCAC 2L Standards
0.4
0.6
1
600
20
70
600
S00
70
70
400
400
70
6
Gross Contamination Levels (GCLs)
400
600
5,000
84,500
20,000
70,000
260,000
85,500
8,500
25,000
28,500
25,000
30,000
6,000
MW-7
7/6/2001
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Not included on target compound list until August 2015
<5.2
6/25/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
NA
1/20/2004
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
7/14/2004
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
2/2/2005
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
12/20/2007 *
NA
NA
NA
NA
NA
NA
NA
NA
NA
12/30/2008**
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/9/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
4/7/2010
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1 0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
4/25/2011
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/2/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1 <2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/9/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
5/4/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/16/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
2/29/2016
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/17/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
1 <1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/3/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
MW-8
7/5/2001
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Not included on target compound list until August 2015
71
6/25/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
NA
1/20/2004
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
7/14/2004
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
2/2/2005
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
12/20/2007
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
12/30/2008
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/9/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
4/7/2010
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<7 0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
4/25/2011
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/2/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/9/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
5/4/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/16/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
2/29/2016
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/17/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/3/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
4of8

TABLE 5
Summary of Historical Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 343348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method
VOCs by EPA Method 6200B (ug/L)
Well ID
Start Date
Collected
1,2-
Dichloroethane
1,2-
Dichloro ro ane
Benzene
Ethylbenzene
MTBE
IPE
Toluene
Total
X lenes
sec-
But Ibenzene
Isopropylbenzene
1,2,4-
Trimeth Ibenzene
1,3,5-
Trimeth Ibenzen
n-Propylbenzene
Naphthalene
15A NCAC 2L Standards
0.4
0.6
1
600
20
70
600
S00
70
70
400
400
70
6
Gross Contamination Levels (GCLs)
400
600
5,000
84,500
20,000
70,000
260,000
85,500
8,500
25,000
28,500
25,000
30,000
6,000
MW-9
10/24/2001
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
70
Not included on target compound list until August 2015
NA
6/25/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
NA
1/20/2004
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
7/14/2004
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
2/2/2005
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
12/20/2007
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<3.0
<2.0
12/30/2008
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/9/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
4/7/2010
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<7 0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
4/25/2011
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/1/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/9/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1 <2.0
<2.0
5/5/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/17/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
3/1/2016
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/18/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/3/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
1 <1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
MW-10
3/26/2009
<1.0
<1.0
<0.5
2.3
<5.0
<5.0
0.85 J
2.8
Not included on target compound list until August 2015
<1.0
10/9/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
4/7/2010
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/13/2010
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
4/25/2011
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/2/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<20
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/8/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
5/4/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/16/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
3/1/2016
<0.5
1 <0.5
<0.5
<0.5
1 <0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/17/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/3/2217
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
5 of 8

TABLE 5
Summary of Historical Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 343348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method
VOCs by EPA Method 6200E (ug/L)
Well ID
Start Date
Collected
1,2-
Dichloroethane
1,2-
Dichloro ro ane
Benzene
Ethylbenzene
MTBE
IPE
Toluene
Total
X lenes
sec-
Bu Ibenzene
Isopropylbenzene
1,2,4-
Trimeth Ibenzene
1,3,5-
Trimeth Ibenzen
n-Propylbenzene
Naphthalene
15A NCAC 2L Standards
0.4
0.6
1
600
20
70
600
500
70
70
400
400
70
6
Gross Contamination Levels (GCLs)
400
600
5,000
84,500
20,000
70,000
260,000
85,500
8,500
25,000
28,500
25,000
30,000
6,000
MW-11
3/26/2009
<40
<40
21800
3,800
<200
220
4,800
10,600
Not included on target compound list until August 2015
780
10/9/2009
<10
<10
65
940
<50
<50
38
1,240
220
4/7/2010
<1.0
<1.0
1.9
150
<5.0
<5.0
4.5
17
30
10/13/2010
<1.0
<1.0
4.4
130
<5.0
<5.0
8.8
106
33
4/25/2011
<1.0
<1.0
<1.0
40.6
<1.0
<1.0
<1.0
28.3
11.4
8/2/2012
<1.0
<1.0
2.3
6.4
<1.0
<1.0
<1.0
<2.0
5.6
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/8/2013
<1.0
<1.0
1.6
1.1
<1.0
<1.0
<1.0
<2.0
<2.0
5/4/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
Full Scale
Injection
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/16/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
3/1/2016
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/17/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/3/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
1 <0.5
<1.0
<0.5
1 <0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
MW-12
3/26/2009
<1.0
<1.0
<0.5
<1.0
<5.0
19
<1.0
11.2
Not included on target compound list until August 2015
1
4.2
10/9/2009
<1.0
<1.0
<0.5
<1.0
<5.0
9.2
<1.0
<2.0
<1.0
4/7/2010
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
4/25/2011-
<1.0
<1.0
258
559
8.5
191
228
1,790
354
8/1/2012
<1.0
<1.0
<1.0
<1.0
<1.0
1.8
<1.0
<2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
10/9/2013
<1.0
<1.0
<1.0
<1.0
<1.0
5.2
<1.0
<2.0
<2.0
5/5/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
1.3
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/17/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
2/29/2016
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/18/2016
<0.5
<0.5
<0.5
<0.5
<1.0
1.7
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
0.85
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/3/2017
<0.5
IS
<0.5
<0.5
<0.5
2.0
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
2.2
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
10/8/2019
<0.5
<0.5
0.55
2.7
<0.5
1.1
<0.5
<1.5
1 <0.5
1 <0.5
1 0.86
1 <0.5
1 0.8
1 <2.0
6of8

TABLE 5
Summary of Historical Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 343348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method
VOCs by EPA Method 6200B (ug/L)
Well ID
Start Date
Collected
1,2-
Dichloroethane
1,2-
Dichloro ro ane
Benzene
Benzene
Ethylbenzene
MTBE
IPE
Toluene
Total
X lenes
sec-
But Ibenzene
Isopropylbenzene
1,2,4-
Trimeth Ibenzene
1'
Trimeth Ibenzen
n-Propylbenzene
Naphthalene
15A NCAC 2L Standards
0.4
0.6
1
600
20
70
600
S00
70
70
400
400
70
6
Gross Contamination Levels (GCLs)
400
600
5,000
84,500
20,000
70,000
260,000
85,500
8,500
25,000
28,500
25,000
30,000
6,000
MW-13
3/26/2009
<10
<10
630
380
37J
610
550
1,270
Not included on target compound list until August 2015
230
10/9/2009
<10
<10
360
300
<50
560
140
930
210
4/7/2010
<10
<10
290
720
<50
350
300
1,980
390
10/13/2010
<1.0
<1.0
320
860
<50
320
330
3,300
490
4/25/2011
<1.0
<1.0
246
516
8.4
179
209
1,660
345
6/21/2012
Pilot Study EAS® Injection
8/1/2012
<5.0
<5.0
249
600
<5.0
102
205
1,650
534
4/10/2013
<5.0
<5.0
57.3
210
<5.0
7.2
45.8
536.0
163
10/8/2013
<2.5
<2.5
54.6
178
<2.5
3.3
38.5
321
136
5/5/2015
<1.0
<1.0
88.4
434
<1.0
4.9
95.1
846
286
Full Scale Injection
6/16/2015
<1.0
<1.0
40.8
179
<1.0
1.8
23.4
369
91.2
8/11/2015
<0.5
<0.5
171
694
1
8.3
84.1
1112.5
<0.5
69.8
1150
102
189
325
11/17/2015
<1.0
<1.0
15.3
152
<1.0
<1.0
10.6
221.3
<1.0
30.8
186
17.7
74.3
68.2
3/1/2016
<1.2
<1.2
46.9
333
<1.2
1.6
22.9
425.7
<1.2
31.1
427
46.2
83
61.2
10/18/2016
<0.5
<0.5
17.9
137
<1.0
0.86
3.2
66.4
3.7
22.5
136.0
8.2
56.6
29.9
3/14/2017
<0.5
<0.5
26.6
182
<0.5
1.3
4.6
59.0
4.7
29.4
187.0
8.8
76.1
17.9
10/3/2017
<1.2
<1.2
63.9
427
<1.2
3.0
14.5
122.8
<1.2
37.2
189
<1.2
97.0
195
10/9/2018
<0.5
<0.5
26
210
<1.0
0.64
8.8
210
5.0
41
130
5.0
94
120
10/8/2019
1 <0.5
1 <0.5
1 25.2
1 64.8
1 <0.5
1 3.7
1 3.4
1 23.3
1 <0.5
1 10.8
1 4.6
1 <0.5
1 24.3
1 16.6
WATER
SUPPLY WELLS
WSW-9
2/26/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Not included on target compound list until August 2015
NA
6/25/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
10/15/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
2/12/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
NA
6/25/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
NA
7/14/2004
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
12/20/2007
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
<1.0
<3.0
<2.0
12/30/2008
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1 0
10/9/2009
<1.0
1 <1.0
<0.5
<1.0
<5.0
1 <5.0
<1.0
<2.0
<1.0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
2/8/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
5/5/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
6/16/2015****
NS
NS
NS
NS
NS
NS
NS
NS
NS
2/26/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Not Sampled
NA
6/25/2002
29
ND
<1.0
<1.0
1.9
<1.0
<1.0
<1.0
NA
10/15/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
2/12/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<2.0
NA
5/5/2015****
NA
NA
NA
NA
NA
NA
NA
NA
NA
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
WSW 10
11/16/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
3/1/2016
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/18/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/3/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
10/8/2019
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
7of8

TABLE 5
Summary of Historical Groundwater Analytical Results
Former Preslar's Exxon
901 NC Hwy 24/27
Midland, Cabarrus County, North Carolina
NCDOT Project R-0615B, WBS 343348.3.5
Incident #13543
DAA Project No. 17117301-010701
Analytical Method
VOCs by EPA Method 6200B (ug/L)
Well ID
Start Date
Collected
1,2-
Dichloroethane
1,2-
Dichloro ro ane
Benzene
Ethylbenzene
MTBE
IPE
Toluene
Total
X lenes
sec-
But Ibenzene
Isopropylbenzene
1,2,4-
Trimeth Ibenzene
1,3,5-
Trimeth Ibenzen
n-Propylbenzene
Naphthalene
15A NCAC 2L Standards
0.4
0.6
1
600
20
70
600
S00
70
70
400
400
70
6
Gross Contamination Levels (GCLs)
400
600
5,000
84,500
20,000
70,000
260,000
85,500
8,500
25,000
28,500
25,000
30,000
6,000
WSW-11
2/26/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Not included on target compound list until August 2015
NA
6/25/2002
<1.0
ND
<1.0
<1.0
1.3
1.9
<1.0
<1.0
NA
10/15/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
6/25/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
NA
7/14/2004
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
12/20/2007
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
<5.0
12/30/2008
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<7 0
10/8/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
2/8/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
5/5/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
<2.0
6/16/2015
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
1 <2.0
<2.0
8/11/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
11/16/2015
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
3/1/2016
<0.5
<0.5
<0.5
<0.5
<0.5
0.94
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/18/2016
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
3/14/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/3/2017
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<0.5
<0.5
<0.5
<2.0
10/9/2018
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
10/8/2019
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<1.5
<0.5
1 <0.5
<0.5
<0.5
<0.5
<1.0
WSW-12
2/26/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
Not Sampled
NA
6/25/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
10/15/2002
<1.0
ND
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NA
2/12/2003
<1.0
ND
<1.0
<1.0
<5.0
<5.0
<1.0
<3.0
NA
7/14/2004
<1.0
<1.0
<1.0
<1.0
<5.0
<5.0
<1.0
2.0 J
<5.0
12/20/2007
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
12/30/2008
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/8/2009
<1.0
<1.0
<0.5
<1.0
<5.0
<5.0
<1.0
<2.0
<1.0
10/13/2010
<1.0
<1.0
<0.50
<1.0
<5.0
<5.0
<1.0
<1.0
<5.0
2/8/2012
<1.0
<1.0
<1.0
<1.0
<1.0
<5.0
<1.0
<2.0
NA
4/10/2013
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
<2.0
NA
5/5/2015****
NS
NS
NS
NS
NS
NS
NS
NS
NS
6/16/2015****
NS
NS
NS
NS
NS
NS
NS
NS
NS
Notes:
ug/L = micrograms per liter
ND = Not Detected
NA = Not Analyzed
J = Estimated concentration between the method detection limit and the reporting limit.
NS = Not Sampled
Compounds not listed were below the quantitation limit.
Data before 10/15/02 are from Corrective Action Plan dated January 15, 2002 prepared by S&ME, Inc.
Bolded values indicate detected constituents.
Shaded values exceed the NCAC 2L Groundwater Standards.
Water supply wells WSW-9 and WSW-12 were removed from the monitoring plan on August 21, 2015.
* MW-7 could not be located during the 12/20/07 sampling event.
`* Chloromethane was detected in this sample at a concentration of 1.7 ug/L, but this value is estimated below the laboratory reporting limit.
**** WSW-10 and WSW-12 could not be accessed during the 5/5/2015 sampling event, WSW-9 and WSW-12 were not accessible 6/16/2015
8of8

I_1» 101 D71:I_l
LABORATORY ANALYTICAL REPORT

aceAnalytical
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
October 17, 2019
Candy Elliott
Soutions-IES
1101 Nowell Rd
Raleigh, NC 27607
RE: Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Dear Candy Elliott:
Enclosed are the analytical results for sample(s) received by the laboratory on October 09, 2019.
The results relate only to the samples included in this report. Results reported herein conform to the
most current, applicable TNI/NELAC standards and the laboratory's Quality Assurance Manual,
where applicable, unless otherwise noted in the body of the report.
If you have any questions concerning this report, please feel free to contact me.
Sincerely, p
Taylor Ezell
[e-mail]
[phone]
Project Manager
Enclosures
cc: Mike Branson, Solutions-IES
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 1 of 34

aceAnalytical
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Charlotte Certification IDs
9800 Kincey Ave. Ste 100, Huntersville, NC 28078
Louisiana/NELAP Certification # LA170028
North Carolina Drinking Water Certification #: 37706
North Carolina Field Services Certification #: 5342
North Carolina Wastewater Certification #: 12
Asheville Certification IDs
2225 Riverside Drive, Asheville, NC 28804
Florida/NELAP Certification #: E87648
Massachusetts Certification #: M-NC030
North Carolina Drinking Water Certification #: 37712
CERTIFICATIONS
South Carolina Certification #: 99006001
Florida/NELAP Certification #: E87627
Kentucky UST Certification #: 84
Virginia/VELAP Certification #: 460221
North Carolina Wastewater Certification #: 40
South Carolina Certification #: 99030001
Virginia/VELAP Certification #: 460222
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC. Page 2 of 34

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Pace Analytical Services, LLC
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[phone]
SAMPLE SUMMARY
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Lab ID
Sample ID
Matrix
Date Collected
Date Received
92448910001
MW-1
Water
10/08/1913:10
10/09/19 13:00
92448910002
MW-3
Water
10/08/1914:00
10/09/19 13:00
92448910003
MW-13
Water
10/08/1914:40
10/09/19 13:00
92448910004
MW-4
Water
10/08/1915:25
10/09/19 13:00
92448910005
MW-12
Water
10/08/1916:10
10/09/19 13:00
92448910006
WSW-11
Water
10/09/19 08:50
10/09/19 13:00
92448910007
WSW-10
Water
10/09/19 09:30
10/09/19 13:00
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 3 of 34

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[phone]
SAMPLE ANALYTE COUNT
Project:
Pace Project No.:
Preslars Exxon NCDOT WBS
92448910
Analytes
Lab ID
Sample ID
Method
Analysts
Reported
Laboratory
92448910001
MW-1
SM 6200B
SAS
63
PASI-C
EPA 300.0 Rev 2.1 1993
CDC
1
PASI-A
92448910002
MW-3
SM 6200B
SAS
63
PASI-C
EPA 300.0 Rev 2.1 1993
CDC
1
PASI-A
92448910003
MW-13
SM 6200B
SAS
63
PASI-C
EPA 300.0 Rev 2.1 1993
CDC
1
PASI-A
92448910004
MW-4
SM 6200B
GAW
63
PASI-C
EPA 300.0 Rev 2.1 1993
CDC
1
PASI-A
92448910005
MW-12
SM 6200B
SAS
63
PASI-C
EPA 300.0 Rev 2.1 1993
CDC
1
PASI-A
92448910006
WSW-11
SM 6200B
SAS
63
PASI-C
EPA 300.0 Rev 2.1 1993
CDC
1
PASI-A
92448910007
WSW-10
SM 6200B
SAS
63
PASI-C
EPA 300.0 Rev 2.1 1993
CDC
1
PASI-A
REPORT OF LABORATORY ANALYSIS
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without the written consent of Pace Analytical Services, LLC. Page 4 of 34

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ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-1 Lab ID: 92448910001 Collected: 10/08/19 13:10 Received: 10/09/19 13:00 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
6200B MSV Analytical Method: SM 6200B
Benzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
71-43-2
Bromobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
108-86-1
Bromochloromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
74-97-5
Bromodichloromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
75-27-4
Bromoform
ND
ug/L
0.50
0.25
1
10/16/19 15:14
75-25-2
Bromomethane
ND
ug/L
5.0
2.5
1
10/16/19 15:14
74-83-9
n-Butylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
104-51-8
sec-Butylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
135-98-8
tert-Butyl benzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
98-06-6
Carbon tetrachloride
ND
ug/L
0.50
0.25
1
10/16/19 15:14
56-23-5
Chlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
108-90-7
Chloroethane
ND
ug/L
1.0
0.50
1
10/16/19 15:14
75-00-3
Chloroform
ND
ug/L
5.0
2.5
1
10/16/19 15:14
67-66-3
Chloromethane
ND
ug/L
1.0
0.50
1
10/16/19 15:14
74-87-3
2-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
95-49-8
4-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
106-43-4
1,2-Dibromo-3-chloropropane
ND
ug/L
1.0
0.50
1
10/16/19 15:14
96-12-8
Dibromochloromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/L
0.50
0.25
1
10/16/19 15:14
106-93-4
Dibromomethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
74-95-3
1,2-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
95-50-1
1,3-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
541-73-1
1,4-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
106-46-7
Dichlorodifluoromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
75-71-8
1,1-Dichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
75-34-3
1,2-Dichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
107-06-2
1,1-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
75-35-4
cis-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
156-59-2
trans-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
156-60-5
1,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
78-87-5
1,3-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
142-28-9
2,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
594-20-7
1,1-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
563-58-6
cis-1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
10061-02-6
Diisopropyl ether
ND
ug/L
0.50
0.25
1
10/16/19 15:14
108-20-3
Ethylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
100-41-4
Hexachloro-1,3-butadiene
ND
ug/L
2.0
1.0
1
10/16/19 15:14
87-68-3
Isopropylbenzene (Cumene)
ND
ug/L
0.50
0.25
1
10/16/19 15:14
98-82-8
Methylene Chloride
ND
ug/L
2.0
1.0
1
10/16/19 15:14
75-09-2
Methyl-tert-butyl ether
ND
ug/L
0.50
0.25
1
10/16/19 15:14
1634-04-4
Naphthalene
ND
ug/L
2.0
1.0
1
10/16/19 15:14
91-20-3
n-Propylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
103-65-1
Styrene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
100-42-5
1,1,1,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 5 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-1
Lab ID:
92448910001
Collected:
10/08/19 13:10
Received: 10/09/19 13:00 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
6200B MSV
Analytical
Method: SM 6200B
Tetrachloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
127-18-4
Toluene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/16/19 15:14
87-61-6
1,2,4-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/16/19 15:14
120-82-1
1,1,1-Trichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
71-55-6
1,1,2-Trichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
79-00-5
Trichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
79-01-6
Trichlorofluoromethane
ND
ug/L
1.0
0.50
1
10/16/19 15:14
75-69-4
1,2,3-Trichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:14
96-18-4
1,2,4-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
95-63-6
1,3,5-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
108-67-8
Vinyl chloride
ND
ug/L
1.0
0.50
1
10/16/19 15:14
75-01-4
m&p-Xylene
ND
ug/L
1.0
0.50
1
10/16/19 15:14
179601-23-1
o-Xylene
ND
ug/L
0.50
0.25
1
10/16/19 15:14
95-47-6
Surrogates
1,2-Dichloroethane-d4 (S)
102
%
70-130
1
10/16/19 15:14
17060-07-0
4-Bromofluorobenzene (S)
100
%
70-130
1
10/16/19 15:14
460-00-4
Toluene-d8 (S)
105
%
70-130
1
10/16/19 15:14
2037-26-5
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Sulfate 15.8 mg/L 1.0 0.50 1 10/11/19 20:34 14808-79-8
Date: 10/17/2019 02:13 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 6 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-3 Lab ID: 92448910002 Collected: 10/08/19 14:00 Received: 10/09/19 13:00 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
6200B MSV Analytical Method: SM 6200B
Benzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
71-43-2
Bromobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
108-86-1
Bromochloromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
74-97-5
Bromodichloromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
75-27-4
Bromoform
ND
ug/L
0.50
0.25
1
10/16/19 15:32
75-25-2
Bromomethane
ND
ug/L
5.0
2.5
1
10/16/19 15:32
74-83-9
n-Butylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
104-51-8
sec-Butylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
135-98-8
tert-Butyl benzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
98-06-6
Carbon tetrachloride
ND
ug/L
0.50
0.25
1
10/16/19 15:32
56-23-5
Chlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
108-90-7
Chloroethane
ND
ug/L
1.0
0.50
1
10/16/19 15:32
75-00-3
Chloroform
ND
ug/L
5.0
2.5
1
10/16/19 15:32
67-66-3
Chloromethane
ND
ug/L
1.0
0.50
1
10/16/19 15:32
74-87-3
2-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
95-49-8
4-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
106-43-4
1,2-Dibromo-3-chloropropane
ND
ug/L
1.0
0.50
1
10/16/19 15:32
96-12-8
Dibromochloromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/L
0.50
0.25
1
10/16/19 15:32
106-93-4
Dibromomethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
74-95-3
1,2-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
95-50-1
1,3-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
541-73-1
1,4-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
106-46-7
Dichlorodifluoromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
75-71-8
1,1-Dichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
75-34-3
1,2-Dichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
107-06-2
1,1-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
75-35-4
cis-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
156-59-2
trans-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
156-60-5
1,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
78-87-5
1,3-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
142-28-9
2,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
594-20-7
1,1-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
563-58-6
cis-1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
10061-02-6
Diisopropyl ether
ND
ug/L
0.50
0.25
1
10/16/19 15:32
108-20-3
Ethylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
100-41-4
Hexachloro-1,3-butadiene
ND
ug/L
2.0
1.0
1
10/16/19 15:32
87-68-3
Isopropylbenzene (Cumene)
ND
ug/L
0.50
0.25
1
10/16/19 15:32
98-82-8
Methylene Chloride
ND
ug/L
2.0
1.0
1
10/16/19 15:32
75-09-2
Methyl-tert-butyl ether
ND
ug/L
0.50
0.25
1
10/16/19 15:32
1634-04-4
Naphthalene
ND
ug/L
2.0
1.0
1
10/16/19 15:32
91-20-3
n-Propylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
103-65-1
Styrene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
100-42-5
1,1,1,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 7 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-3
Lab ID:
92448910002
Collected:
10/08/19 14:00
Received: 10/09/19 13:00 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
6200B MSV
Analytical
Method: SM 6200B
Tetrachloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
127-18-4
Toluene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/16/19 15:32
87-61-6
1,2,4-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/16/19 15:32
120-82-1
1,1,1-Trichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
71-55-6
1,1,2-Trichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
79-00-5
Trichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
79-01-6
Trichlorofluoromethane
ND
ug/L
1.0
0.50
1
10/16/19 15:32
75-69-4
1,2,3-Trichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:32
96-18-4
1,2,4-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
95-63-6
1,3,5-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
108-67-8
Vinyl chloride
ND
ug/L
1.0
0.50
1
10/16/19 15:32
75-01-4
m&p-Xylene
ND
ug/L
1.0
0.50
1
10/16/19 15:32
179601-23-1
o-Xylene
ND
ug/L
0.50
0.25
1
10/16/19 15:32
95-47-6
Surrogates
1,2-Dichloroethane-d4 (S)
104
%
70-130
1
10/16/19 15:32
17060-07-0
4-Bromofluorobenzene (S)
101
%
70-130
1
10/16/19 15:32
460-00-4
Toluene-d8 (S)
104
%
70-130
1
10/16/19 15:32
2037-26-5
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Sulfate 81.5 mg/L 1.0 0.50 1 10/11/19 20:48 14808-79-8
Date: 10/17/2019 02:13 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 8 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-13 Lab ID: 92448910003 Collected: 10/08/19 14:40 Received: 10/09/19 13:00 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
6200B MSV Analytical Method: SM 6200B
Benzene
25.2
ug/L
0.50
0.25
1
10/16/19 15:50
71-43-2
Bromobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
108-86-1
Bromochloromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
74-97-5
Bromodichloromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
75-27-4
Bromoform
ND
ug/L
0.50
0.25
1
10/16/19 15:50
75-25-2
Bromomethane
ND
ug/L
5.0
2.5
1
10/16/19 15:50
74-83-9
n-Butylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
104-51-8
sec-Butylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
135-98-8
tert-Butyl benzene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
98-06-6
Carbon tetrachloride
ND
ug/L
0.50
0.25
1
10/16/19 15:50
56-23-5
Chlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
108-90-7
Chloroethane
ND
ug/L
1.0
0.50
1
10/16/19 15:50
75-00-3
Chloroform
ND
ug/L
5.0
2.5
1
10/16/19 15:50
67-66-3
Chloromethane
ND
ug/L
1.0
0.50
1
10/16/19 15:50
74-87-3
2-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
95-49-8
4-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
106-43-4
1,2-Dibromo-3-chloropropane
ND
ug/L
1.0
0.50
1
10/16/19 15:50
96-12-8
Dibromochloromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/L
0.50
0.25
1
10/16/19 15:50
106-93-4
Dibromomethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
74-95-3
1,2-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
95-50-1
1,3-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
541-73-1
1,4-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
106-46-7
Dichlorodifluoromethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
75-71-8
1,1-Dichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
75-34-3
1,2-Dichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
107-06-2
1,1-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
75-35-4
cis-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
156-59-2
trans-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
156-60-5
1,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
78-87-5
1,3-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
142-28-9
2,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
594-20-7
1,1-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
563-58-6
cis-1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
10061-02-6
Diisopropyl ether
3.7
ug/L
0.50
0.25
1
10/16/19 15:50
108-20-3
Ethylbenzene
64.8
ug/L
0.50
0.25
1
10/16/19 15:50
100-41-4
Hexachloro-1,3-butadiene
ND
ug/L
2.0
1.0
1
10/16/19 15:50
87-68-3
Isopropylbenzene (Cumene)
10.8
ug/L
0.50
0.25
1
10/16/19 15:50
98-82-8
Methylene Chloride
ND
ug/L
2.0
1.0
1
10/16/19 15:50
75-09-2
Methyl-tert-butyl ether
ND
ug/L
0.50
0.25
1
10/16/19 15:50
1634-04-4
Naphthalene
16.6
ug/L
2.0
1.0
1
10/16/19 15:50
91-20-3
n-Propylbenzene
24.3
ug/L
0.50
0.25
1
10/16/19 15:50
103-65-1
Styrene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
100-42-5
1,1,1,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 9 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-13
Lab ID:
92448910003
Collected:
10/08/19 14:40
Received: 10/09/19 13:00 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
6200B MSV
Analytical
Method: SM 6200B
Tetrachloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
127-18-4
Toluene
3.4
ug/L
0.50
0.25
1
10/16/19 15:50
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/16/19 15:50
87-61-6
1,2,4-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/16/19 15:50
120-82-1
1,1,1-Trichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
71-55-6
1,1,2-Trichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
79-00-5
Trichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
79-01-6
Trichlorofluoromethane
ND
ug/L
1.0
0.50
1
10/16/19 15:50
75-69-4
1,2,3-Trichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 15:50
96-18-4
1,2,4-Trimethylbenzene
4.6
ug/L
0.50
0.25
1
10/16/19 15:50
95-63-6
1,3,5-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 15:50
108-67-8
Vinyl chloride
ND
ug/L
1.0
0.50
1
10/16/19 15:50
75-01-4
m&p-Xylene
20.1
ug/L
1.0
0.50
1
10/16/19 15:50
179601-23-1
o-Xylene
3.2
ug/L
0.50
0.25
1
10/16/19 15:50
95-47-6
Surrogates
1,2-Dichloroethane-d4 (S)
103
%
70-130
1
10/16/19 15:50
17060-07-0
4-Bromofluorobenzene (S)
100
%
70-130
1
10/16/19 15:50
460-00-4
Toluene-d8 (S)
102
%
70-130
1
10/16/19 15:50
2037-26-5
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Sulfate 32.7 mg/L 1.0 0.50 1 10/11/19 21:02 14808-79-8
Date: 10/17/2019 02:13 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 10 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-4 Lab ID: 92448910004 Collected: 10/08/19 15:25 Received: 10/09/19 13:00 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
6200B MSV Analytical Method: SM 6200B
Benzene
505
ug/L
2.5
1.2
5
10/16/19 17:37
71-43-2
Bromobenzene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
108-86-1
Bromochloromethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
74-97-5
Bromodichloromethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
75-27-4
Bromoform
ND
ug/L
2.5
1.2
5
10/16/19 17:37
75-25-2
Bromomethane
ND
ug/L
25.0
12.5
5
10/16/19 17:37
74-83-9
n-Butylbenzene
11.5
ug/L
2.5
1.2
5
10/16/19 17:37
104-51-8
sec-Butylbenzene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
135-98-8
tert-Butyl benzene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
98-06-6
Carbon tetrachloride
ND
ug/L
2.5
1.2
5
10/16/19 17:37
56-23-5
Chlorobenzene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
108-90-7
Chloroethane
ND
ug/L
5.0
2.5
5
10/16/19 17:37
75-00-3
Chloroform
ND
ug/L
25.0
12.5
5
10/16/19 17:37
67-66-3
Chloromethane
6.0
ug/L
5.0
2.5
5
10/16/19 17:37
74-87-3
2-Chlorotoluene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
95-49-8
4-Chlorotoluene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
106-43-4
1,2-Dibromo-3-chloropropane
ND
ug/L
5.0
2.5
5
10/16/19 17:37
96-12-8
Dibromochloromethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/L
2.5
1.2
5
10/16/19 17:37
106-93-4
Dibromomethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
74-95-3
1,2-Dichlorobenzene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
95-50-1
1,3-Dichlorobenzene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
541-73-1
1,4-Dichlorobenzene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
106-46-7
Dichlorodifluoromethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
75-71-8
1,1-Dichloroethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
75-34-3
1,2-Dichloroethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
107-06-2
1,1-Dichloroethene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
75-35-4
cis-1,2-Dichloroethene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
156-59-2
trans-1,2-Dichloroethene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
156-60-5
1,2-Dichloropropane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
78-87-5
1,3-Dichloropropane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
142-28-9
2,2-Dichloropropane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
594-20-7
1,1-Dichloropropene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
563-58-6
cis-1,3-Dichloropropene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
10061-02-6
Diisopropyl ether
14.9
ug/L
2.5
1.2
5
10/16/19 17:37
108-20-3
Ethylbenzene
669
ug/L
2.5
1.2
5
10/16/19 17:37
100-41-4
Hexachloro-1,3-butadiene
ND
ug/L
10.0
5.0
5
10/16/19 17:37
87-68-3
Isopropylbenzene (Cumene)
35.9
ug/L
2.5
1.2
5
10/16/19 17:37
98-82-8
Methylene Chloride
ND
ug/L
10.0
5.0
5
10/16/19 17:37
75-09-2
Methyl-tert-butyl ether
ND
ug/L
2.5
1.2
5
10/16/19 17:37
1634-04-4
Naphthalene
30.7
ug/L
10.0
5.0
5
10/16/19 17:37
91-20-3
n-Propylbenzene
101
ug/L
2.5
1.2
5
10/16/19 17:37
103-65-1
Styrene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
100-42-5
1,1,1,2-Tetrachloroethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 11 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-4
Lab ID:
92448910004
Collected:
10/08/19 15:25
Received: 10/09/19 13:00 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
6200B MSV
Analytical
Method: SM 6200B
Tetrachloroethene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
127-18-4
Toluene
27.8
ug/L
2.5
1.2
5
10/16/19 17:37
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
10.0
5.0
5
10/16/19 17:37
87-61-6
1,2,4-Trichlorobenzene
ND
ug/L
10.0
5.0
5
10/16/19 17:37
120-82-1
1,1,1-Trichloroethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
71-55-6
1,1,2-Trichloroethane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
79-00-5
Trichloroethene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
79-01-6
Trichlorofluoromethane
ND
ug/L
5.0
2.5
5
10/16/19 17:37
75-69-4
1,2,3-Trichloropropane
ND
ug/L
2.5
1.2
5
10/16/19 17:37
96-18-4
1,2,4-Trimethylbenzene
110
ug/L
2.5
1.2
5
10/16/19 17:37
95-63-6
1,3,5-Trimethylbenzene
ND
ug/L
2.5
1.2
5
10/16/19 17:37
108-67-8
Vinyl chloride
ND
ug/L
5.0
2.5
5
10/16/19 17:37
75-01-4
m&p-Xylene
51.5
ug/L
5.0
2.5
5
10/16/19 17:37
179601-23-1
o-Xylene
11.0
ug/L
2.5
1.2
5
10/16/19 17:37
95-47-6
Surrogates
1,2-Dichloroethane-d4 (S)
104
%
70-130
5
10/16/19 17:37
17060-07-0
4-Bromofluorobenzene (S)
100
%
70-130
5
10/16/19 17:37
460-00-4
Toluene-d8 (S)
103
%
70-130
5
10/16/19 17:37
2037-26-5
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Sulfate 29.4 mg/L 1.0 0.50 1 10/11/19 21:58 14808-79-8
Date: 10/17/2019 02:13 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 12 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-12 Lab ID: 92448910005 Collected: 10/08/19 16:10 Received: 10/09/19 13:00 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
6200B MSV Analytical Method: SM 6200B
Benzene
0.55
ug/L
0.50
0.25
1
10/16/19 16:25
71-43-2
Bromobenzene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
108-86-1
Bromochloromethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
74-97-5
Bromodichloromethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
75-27-4
Bromoform
ND
ug/L
0.50
0.25
1
10/16/19 16:25
75-25-2
Bromomethane
ND
ug/L
5.0
2.5
1
10/16/19 16:25
74-83-9
n-Butylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
104-51-8
sec-Butylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
135-98-8
tert-Butyl benzene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
98-06-6
Carbon tetrachloride
ND
ug/L
0.50
0.25
1
10/16/19 16:25
56-23-5
Chlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
108-90-7
Chloroethane
ND
ug/L
1.0
0.50
1
10/16/19 16:25
75-00-3
Chloroform
ND
ug/L
5.0
2.5
1
10/16/19 16:25
67-66-3
Chloromethane
ND
ug/L
1.0
0.50
1
10/16/19 16:25
74-87-3
2-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
95-49-8
4-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
106-43-4
1,2-Dibromo-3-chloropropane
ND
ug/L
1.0
0.50
1
10/16/19 16:25
96-12-8
Dibromochloromethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/L
0.50
0.25
1
10/16/19 16:25
106-93-4
Dibromomethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
74-95-3
1,2-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
95-50-1
1,3-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
541-73-1
1,4-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
106-46-7
Dichlorodifluoromethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
75-71-8
1,1-Dichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
75-34-3
1,2-Dichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
107-06-2
1,1-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
75-35-4
cis-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
156-59-2
trans-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
156-60-5
1,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
78-87-5
1,3-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
142-28-9
2,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
594-20-7
1,1-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
563-58-6
cis-1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
10061-02-6
Diisopropyl ether
1.1
ug/L
0.50
0.25
1
10/16/19 16:25
108-20-3
Ethylbenzene
2.7
ug/L
0.50
0.25
1
10/16/19 16:25
100-41-4
Hexachloro-1,3-butadiene
ND
ug/L
2.0
1.0
1
10/16/19 16:25
87-68-3
Isopropylbenzene (Cumene)
ND
ug/L
0.50
0.25
1
10/16/19 16:25
98-82-8
Methylene Chloride
ND
ug/L
2.0
1.0
1
10/16/19 16:25
75-09-2
Methyl-tert-butyl ether
ND
ug/L
0.50
0.25
1
10/16/19 16:25
1634-04-4
Naphthalene
ND
ug/L
2.0
1.0
1
10/16/19 16:25
91-20-3
n-Propylbenzene
0.80
ug/L
0.50
0.25
1
10/16/19 16:25
103-65-1
Styrene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
100-42-5
1,1,1,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 13 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: MW-12
Lab ID:
92448910005
Collected:
10/08/19 16:10
Received: 10/09/19 13:00 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
6200B MSV
Analytical
Method: SM 6200B
Tetrachloroethene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
127-18-4
Toluene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/16/19 16:25
87-61-6
1,2,4-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/16/19 16:25
120-82-1
1,1,1-Trichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
71-55-6
1,1,2-Trichloroethane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
79-00-5
Trichloroethene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
79-01-6
Trichlorofluoromethane
ND
ug/L
1.0
0.50
1
10/16/19 16:25
75-69-4
1,2,3-Trichloropropane
ND
ug/L
0.50
0.25
1
10/16/19 16:25
96-18-4
1,2,4-Trimethylbenzene
0.86
ug/L
0.50
0.25
1
10/16/19 16:25
95-63-6
1,3,5-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
108-67-8
Vinyl chloride
ND
ug/L
1.0
0.50
1
10/16/19 16:25
75-01-4
m&p-Xylene
ND
ug/L
1.0
0.50
1
10/16/19 16:25
179601-23-1
o-Xylene
ND
ug/L
0.50
0.25
1
10/16/19 16:25
95-47-6
Surrogates
1,2-Dichloroethane-d4 (S)
100
%
70-130
1
10/16/19 16:25
17060-07-0
4-Bromofluorobenzene (S)
99
%
70-130
1
10/16/19 16:25
460-00-4
Toluene-d8 (S)
105
%
70-130
1
10/16/19 16:25
2037-26-5
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Sulfate 9.7 mg/L 1.0 0.50 1 10/11/19 22:12 14808-79-8
Date: 10/17/2019 02:13 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 14 of 34

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ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: WSW-11 Lab ID: 92448910006 Collected: 10/09/19 08:50 Received: 10/09/19 13:00 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
6200B MSV Analytical Method: SM 6200B
Benzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
71-43-2
Bromobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
108-86-1
Bromochloromethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
74-97-5
Bromodichloromethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
75-27-4
Bromoform
ND
ug/L
0.50
0.25
1
10/17/19 10:28
75-25-2
Bromomethane
ND
ug/L
5.0
2.5
1
10/17/19 10:28
74-83-9
n-Butylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
104-51-8
sec-Butylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
135-98-8
tert-Butyl benzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
98-06-6
Carbon tetrachloride
ND
ug/L
0.50
0.25
1
10/17/19 10:28
56-23-5
Chlorobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
108-90-7
Chloroethane
ND
ug/L
1.0
0.50
1
10/17/19 10:28
75-00-3
Chloroform
ND
ug/L
5.0
2.5
1
10/17/19 10:28
67-66-3
Chloromethane
ND
ug/L
1.0
0.50
1
10/17/19 10:28
74-87-3
2-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
95-49-8
4-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
106-43-4
1,2-Dibromo-3-chloropropane
ND
ug/L
1.0
0.50
1
10/17/19 10:28
96-12-8
Dibromochloromethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/L
0.50
0.25
1
10/17/19 10:28
106-93-4
Dibromomethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
74-95-3
1,2-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
95-50-1
1,3-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
541-73-1
1,4-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
106-46-7
Dichlorodifluoromethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
75-71-8
1,1-Dichloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
75-34-3
1,2-Dichloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
107-06-2
1,1-Dichloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
75-35-4
cis-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
156-59-2
trans-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
156-60-5
1,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
78-87-5
1,3-Dichloropropane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
142-28-9
2,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
594-20-7
1,1-Dichloropropene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
563-58-6
cis-1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
10061-02-6
Diisopropyl ether
ND
ug/L
0.50
0.25
1
10/17/19 10:28
108-20-3
Ethylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
100-41-4
Hexachloro-1,3-butadiene
ND
ug/L
2.0
1.0
1
10/17/19 10:28
87-68-3
Isopropylbenzene (Cumene)
ND
ug/L
0.50
0.25
1
10/17/19 10:28
98-82-8
Methylene Chloride
ND
ug/L
2.0
1.0
1
10/17/19 10:28
75-09-2
Methyl-tert-butyl ether
ND
ug/L
0.50
0.25
1
10/17/19 10:28
1634-04-4
Naphthalene
ND
ug/L
2.0
1.0
1
10/17/19 10:28
91-20-3
n-Propylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
103-65-1
Styrene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
100-42-5
1,1,1,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 15 of 34

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ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: WSW-11
Lab ID:
92448910006
Collected:
10/09/19 08:50
Received: 10/09/19 13:00 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
6200B MSV
Analytical
Method: SM 6200B
Tetrachloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
127-18-4
Toluene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/17/19 10:28
87-61-6
1,2,4-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/17/19 10:28
120-82-1
1,1,1-Trichloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
71-55-6
1,1,2-Trichloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
79-00-5
Trichloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
79-01-6
Trichlorofluoromethane
ND
ug/L
1.0
0.50
1
10/17/19 10:28
75-69-4
1,2,3-Trichloropropane
ND
ug/L
0.50
0.25
1
10/17/19 10:28
96-18-4
1,2,4-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
95-63-6
1,3,5-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
108-67-8
Vinyl chloride
ND
ug/L
1.0
0.50
1
10/17/19 10:28
75-01-4
m&p-Xylene
ND
ug/L
1.0
0.50
1
10/17/19 10:28
179601-23-1
o-Xylene
ND
ug/L
0.50
0.25
1
10/17/19 10:28
95-47-6
Surrogates
1,2-Dichloroethane-d4 (S)
103
%
70-130
1
10/17/19 10:28
17060-07-0
4-Bromofluorobenzene (S)
98
%
70-130
1
10/17/19 10:28
460-00-4
Toluene-d8 (S)
104
%
70-130
1
10/17/19 10:28
2037-26-5
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Sulfate 42.8 mg/L 1.0 0.50 1 10/11/19 22:26 14808-79-8
Date: 10/17/2019 02:13 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 16 of 34

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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: WSW-10 Lab ID: 92448910007 Collected: 10/09/19 09:30 Received: 10/09/19 13:00 Matrix: Water
Report
Parameters Results Units Limit MDL DF Prepared Analyzed CAS No. Qual
6200B MSV Analytical Method: SM 6200B
Benzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
71-43-2
Bromobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
108-86-1
Bromochloromethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
74-97-5
Bromodichloromethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
75-27-4
Bromoform
ND
ug/L
0.50
0.25
1
10/17/19 10:46
75-25-2
Bromomethane
ND
ug/L
5.0
2.5
1
10/17/19 10:46
74-83-9
n-Butylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
104-51-8
sec-Butylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
135-98-8
tert-Butyl benzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
98-06-6
Carbon tetrachloride
ND
ug/L
0.50
0.25
1
10/17/19 10:46
56-23-5
Chlorobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
108-90-7
Chloroethane
ND
ug/L
1.0
0.50
1
10/17/19 10:46
75-00-3
Chloroform
ND
ug/L
5.0
2.5
1
10/17/19 10:46
67-66-3
Chloromethane
ND
ug/L
1.0
0.50
1
10/17/19 10:46
74-87-3
2-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
95-49-8
4-Chlorotoluene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
106-43-4
1,2-Dibromo-3-chloropropane
ND
ug/L
1.0
0.50
1
10/17/19 10:46
96-12-8
Dibromochloromethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
124-48-1
1,2-Dibromoethane (EDB)
ND
ug/L
0.50
0.25
1
10/17/19 10:46
106-93-4
Dibromomethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
74-95-3
1,2-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
95-50-1
1,3-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
541-73-1
1,4-Dichlorobenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
106-46-7
Dichlorodifluoromethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
75-71-8
1,1-Dichloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
75-34-3
1,2-Dichloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
107-06-2
1,1-Dichloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
75-35-4
cis-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
156-59-2
trans-1,2-Dichloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
156-60-5
1,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
78-87-5
1,3-Dichloropropane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
142-28-9
2,2-Dichloropropane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
594-20-7
1,1-Dichloropropene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
563-58-6
cis-1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
10061-01-5
trans- 1,3-Dichloropropene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
10061-02-6
Diisopropyl ether
ND
ug/L
0.50
0.25
1
10/17/19 10:46
108-20-3
Ethylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
100-41-4
Hexachloro-1,3-butadiene
ND
ug/L
2.0
1.0
1
10/17/19 10:46
87-68-3
Isopropylbenzene (Cumene)
ND
ug/L
0.50
0.25
1
10/17/19 10:46
98-82-8
Methylene Chloride
ND
ug/L
2.0
1.0
1
10/17/19 10:46
75-09-2
Methyl-tert-butyl ether
ND
ug/L
0.50
0.25
1
10/17/19 10:46
1634-04-4
Naphthalene
ND
ug/L
2.0
1.0
1
10/17/19 10:46
91-20-3
n-Propylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
103-65-1
Styrene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
100-42-5
1,1,1,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
79-34-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 17 of 34

aceAnalytical
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
ANALYTICAL RESULTS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Sample: WSW-10
Lab ID:
92448910007
Collected:
10/09/19 09:30
Received: 10/09/19 13:00 Matrix: Water
Report
Parameters
Results
Units
Limit
MDL
DF
Prepared Analyzed
CAS No. Qual
6200B MSV
Analytical
Method: SM 6200B
Tetrachloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
127-18-4
Toluene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/17/19 10:46
87-61-6
1,2,4-Trichlorobenzene
ND
ug/L
2.0
1.0
1
10/17/19 10:46
120-82-1
1,1,1-Trichloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
71-55-6
1,1,2-Trichloroethane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
79-00-5
Trichloroethene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
79-01-6
Trichlorofluoromethane
ND
ug/L
1.0
0.50
1
10/17/19 10:46
75-69-4
1,2,3-Trichloropropane
ND
ug/L
0.50
0.25
1
10/17/19 10:46
96-18-4
1,2,4-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
95-63-6
1,3,5-Trimethylbenzene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
108-67-8
Vinyl chloride
ND
ug/L
1.0
0.50
1
10/17/19 10:46
75-01-4
m&p-Xylene
ND
ug/L
1.0
0.50
1
10/17/19 10:46
179601-23-1
o-Xylene
ND
ug/L
0.50
0.25
1
10/17/19 10:46
95-47-6
Surrogates
1,2-Dichloroethane-d4 (S)
102
%
70-130
1
10/17/19 10:46
17060-07-0
4-Bromofluorobenzene (S)
99
%
70-130
1
10/17/19 10:46
460-00-4
Toluene-d8 (S)
104
%
70-130
1
10/17/19 10:46
2037-26-5
300.0 IC Anions 28 Days Analytical Method: EPA 300.0 Rev 2.1 1993
Sulfate 37.5 mg/L 1.0 0.50 1 10/11/19 22:40 14808-79-8
Date: 10/17/2019 02:13 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Page 18 of 34

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9800 Kincey Ave. Suite 100
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QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
QC Batch: 503896 Analysis Method: SM 6200B
QC Batch Method: SM 6200B Analysis Description: 6200E MSV
Associated Lab Samples: 92448910001, 92448910002, 92448910003, 92448910004, 92448910005
METHOD BLANK: 2708059 Matrix: Water
Associated Lab Samples: 92448910001, 92448910002, 92448910003, 92448910004, 92448910005
Blank Reporting
Parameter Units Result Limit MDL
Analyzed
1,1,1,2-Tetrachloroethane
ug/L
ND
0.50
0.25
10/16/19 11:39
1,1,1-Trichloroethane
ug/L
ND
0.50
0.25
10/16/19 11:39
1,1,2,2-Tetrachloroethane
ug/L
ND
0.50
0.25
10/16/19 11:39
1,1,2-Trichloroethane
ug/L
ND
0.50
0.25
10/16/19 11:39
1,1-Dichloroethane
ug/L
ND
0.50
0.25
10/16/19 11:39
1,1-Dichloroethene
ug/L
ND
0.50
0.25
10/16/19 11:39
1,1-Dichloropropene
ug/L
ND
0.50
0.25
10/16/19 11:39
1,2,3-Trichlorobenzene
ug/L
ND
2.0
1.0
10/16/19 11:39
1,2,3-Trichloropropane
ug/L
ND
0.50
0.25
10/16/19 11:39
1,2,4-Trichlorobenzene
ug/L
ND
2.0
1.0
10/16/19 11:39
1,2,4-Trimethylbenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
1,2-Dibromo-3-chloropropane
ug/L
ND
1.0
0.50
10/16/19 11:39
1,2-Dibromoethane (EDB)
ug/L
ND
0.50
0.25
10/16/19 11:39
1,2-Dichlorobenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
1,2-Dichloroethane
ug/L
ND
0.50
0.25
10/16/19 11:39
1,2-Dichloropropane
ug/L
ND
0.50
0.25
10/16/19 11:39
1,3,5-Trimethylbenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
1,3-Dichlorobenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
1,3-Dichloropropane
ug/L
ND
0.50
0.25
10/16/19 11:39
1,4-Dichlorobenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
2,2-Dichloropropane
ug/L
ND
0.50
0.25
10/16/19 11:39
2-Chlorotoluene
ug/L
ND
0.50
0.25
10/16/19 11:39
4-Chlorotoluene
ug/L
ND
0.50
0.25
10/16/19 11:39
Benzene
ug/L
ND
0.50
0.25
10/16/19 11:39
Bromobenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
Bromochloromethane
ug/L
ND
0.50
0.25
10/16/19 11:39
Bromodichloromethane
ug/L
ND
0.50
0.25
10/16/19 11:39
Bromoform
ug/L
ND
0.50
0.25
10/16/19 11:39
Bromomethane
ug/L
ND
5.0
2.5
10/16/19 11:39
Carbon tetrachloride
ug/L
ND
0.50
0.25
10/16/19 11:39
Chlorobenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
Chloroethane
ug/L
ND
1.0
0.50
10/16/19 11:39
Chloroform
ug/L
ND
5.0
2.5
10/16/19 11:39
Chloromethane
ug/L
ND
1.0
0.50
10/16/19 11:39
cis-1,2-Dichloroethene
ug/L
ND
0.50
0.25
10/16/19 11:39
cis-1,3-Dichloropropene
ug/L
ND
0.50
0.25
10/16/19 11:39
Dibromochloromethane
ug/L
ND
0.50
0.25
10/16/19 11:39
Dibromomethane
ug/L
ND
0.50
0.25
10/16/19 11:39
Dichlorodifluoromethane
ug/L
ND
0.50
0.25
10/16/19 11:39
Diisopropyl ether
ug/L
ND
0.50
0.25
10/16/19 11:39
Ethylbenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC. Page 19 of 34

aceAnalytical
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
METHOD BLANK: 2708059 Matrix: Water
Associated Lab Samples: 92448910001, 92448910002, 92448910003, 92448910004, 92448910005
Blank Reporting
Parameter Units Result Limit MDL
Analyzed
Hexachloro-1,3-butadiene
ug/L
ND
2.0
1.0
10/16/19 11:39
Isopropylbenzene (Cumene)
ug/L
ND
0.50
0.25
10/16/19 11:39
m&p-Xylene
ug/L
ND
1.0
0.50
10/16/19 11:39
Methyl-tert-butyl ether
ug/L
ND
0.50
0.25
10/16/19 11:39
Methylene Chloride
ug/L
ND
2.0
1.0
10/16/19 11:39
n-Butylbenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
n-Propylbenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
Naphthalene
ug/L
ND
2.0
1.0
10/16/19 11:39
o-Xylene
ug/L
ND
0.50
0.25
10/16/19 11:39
sec-Butylbenzene
ug/L
ND
0.50
0.25
10/16/19 11:39
Styrene
ug/L
ND
0.50
0.25
10/16/19 11:39
tert-Butyl benzene
ug/L
ND
0.50
0.25
10/16/19 11:39
Tetrachloroethene
ug/L
ND
0.50
0.25
10/16/19 11:39
Toluene
ug/L
ND
0.50
0.25
10/16/19 11:39
trans-1,2-Dichloroethene
ug/L
ND
0.50
0.25
10/16/19 11:39
trans- 1,3-Dichloropropene
ug/L
ND
0.50
0.25
10/16/19 11:39
Trichloroethene
ug/L
ND
0.50
0.25
10/16/19 11:39
Trichlorofluoromethane
ug/L
ND
1.0
0.50
10/16/19 11:39
Vinyl chloride
ug/L
ND
1.0
0.50
10/16/19 11:39
1,2-Dichloroethane-d4 (S)
%
103
70-130
10/16/19 11:39
4-Bromofluorobenzene (S)
%
99
70-130
10/16/19 11:39
Toluene-d8 (S)
%
104
70-130
10/16/19 11:39
LABORATORY CONTROL SAMPLE:
Parameter
2708060
Units
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits
1,1,1,2-Tetrachloroethane
ug/L
50
54.8
110
60-140
1,1,1-Trichloroethane
ug/L
50
58.9
118
60-140
1,1,2,2-Tetrachloroethane
ug/L
50
51.3
103
60-140
1,1,2-Trichloroethane
ug/L
50
56.0
112
60-140
1,1-Dichloroethane
ug/L
50
57.2
114
60-140
1,1-Dichloroethene
ug/L
50
59.2
118
60-140
1,1-Dichloropropene
ug/L
50
59.9
120
60-140
1,2,3-Trichlorobenzene
ug/L
50
52.3
105
60-140
1,2,3-Trichloropropane
ug/L
50
51.7
103
60-140
1,2,4-Trichlorobenzene
ug/L
50
50.5
101
60-140
1,2,4-Trimethylbenzene
ug/L
50
52.0
104
60-140
1,2-Dibromo-3-chloropropane
ug/L
50
51.4
103
60-140
1,2-Dibromoethane (EDB)
ug/L
50
55.0
110
60-140
1,2-Dichlorobenzene
ug/L
50
51.7
103
60-140
1,2-Dichloroethane
ug/L
50
52.8
106
60-140
1,2-Dichloropropane
ug/L
50
56.0
112
60-140
1,3,5-Trimethylbenzene
ug/L
50
52.8
106
60-140
1,3-Dichlorobenzene
ug/L
50
51.1
102
60-140
Qualifiers
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC. Page 20 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
LABORATORY CONTROL SAMPLE:
Parameter
2708060
Units
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits
1,3-Dichloropropane
ug/L
50
55.9
112
60-140
1,4-Dichlorobenzene
ug/L
50
50.7
101
60-140
2,2-Dichloropropane
ug/L
50
64.7
129
60-140
2-Chlorotoluene
ug/L
50
51.9
104
60-140
4-Chlorotoluene
ug/L
50
51.7
103
60-140
Benzene
ug/L
50
57.4
115
60-140
Bromobenzene
ug/L
50
51.3
103
60-140
Bromochloromethane
ug/L
50
58.3
117
60-140
Bromodichloromethane
ug/L
50
58.5
117
60-140
Bromoform
ug/L
50
50.2
100
60-140
Bromomethane
ug/L
50
53.7
107
60-140
Carbon tetrachloride
ug/L
50
57.7
115
60-140
Chlorobenzene
ug/L
50
52.7
105
60-140
Chloroethane
ug/L
50
53.6
107
60-140
Chloroform
ug/L
50
56.0
112
60-140
Chloromethane
ug/L
50
47.4
95
60-140
cis-1,2-Dichloroethene
ug/L
50
57.1
114
60-140
cis-1,3-Dichloropropene
ug/L
50
60.9
122
60-140
Dibromochloromethane
ug/L
50
54.8
110
60-140
Dibromomethane
ug/L
50
56.0
112
60-140
Dichlorodifluoromethane
ug/L
50
58.5
117
60-140
Diisopropyl ether
ug/L
50
54.7
109
60-140
Ethylbenzene
ug/L
50
54.2
108
60-140
Hexachloro-1,3-butadiene
ug/L
50
52.1
104
60-140
Isopropylbenzene(Cumene)
ug/L
50
54.7
109
60-140
m&p-Xylene
ug/L
100
109
109
60-140
Methyl-tert-butyl ether
ug/L
50
60.5
121
60-140
Methylene Chloride
ug/L
50
52.5
105
60-140
n-Butylbenzene
ug/L
50
52.3
105
60-140
n-Propylbenzene
ug/L
50
52.6
105
60-140
Naphthalene
ug/L
50
50.9
102
60-140
o-Xylene
ug/L
50
55.4
111
60-140
sec-Butylbenzene
ug/L
50
54.5
109
60-140
Styrene
ug/L
50
54.0
108
60-140
tert-Butyl benzene
ug/L
50
46.3
93
60-140
Tetrachloroethene
ug/L
50
55.6
111
60-140
Toluene
ug/L
50
53.8
108
60-140
trans-1,2-Dichloroethene
ug/L
50
57.6
115
60-140
trans- 1,3-Dichloropropene
ug/L
50
58.8
118
60-140
Trichloroethene
ug/L
50
58.2
116
60-140
Trichlorofluoromethane
ug/L
50
60.0
120
60-140
Vinyl chloride
ug/L
50
59.0
118
60-140
1,2-Dichloroethane-d4 (S)
%
101
70-130
4-Bromofluorobenzene (S)
%
101
70-130
Toluene-d8 (S)
%
99
70-130
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC. Page 21 of 34

aceAnalytical
—pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2708061
MS
92448096004 Spike
Parameter Units Result Conc.
1,1,1,2-Tetrachloroethane
1,1,1-Trichloroethane
1,1, 2,2-Tetrachloroethane
1,1, 2-Trichloroethane
1,1-Dichloroethane
1,1-Dichloroethene
1,1-Dichloropropene
1,2,3-Trichlorobenzene
1,2,3-Trichloropropane
1,2,4-Trichlorobenzene
1,2,4-Trimethyl benzene
1,2-Dibromo-3-
chloropropane
1,2-Dibromoethane (EDB)
1,2-Dichlorobenzene
1,2-Dichloroethane
1,2-Dichloropropane
1,3,5-Trimethyl benzene
1,3-Dichlorobenzene
1,3-Dichloropropane
1,4-Dichlorobenzene
2,2-Dichloropropane
2-Chlorotoluene
4-Chlorotoluene
Benzene
Bromobenzene
Bromochloromethane
Bromodichloromethane
Bromoform
Bromomethane
Carbon tetrachloride
Chlorobenzene
Chloroethane
Chloroform
Chloromethane
cis-1,2-Dichloroethene
cis-1,3-Dichloropropene
Dibromochloromethane
Dibromomethane
Dichlorodifluoromethane
Diisopropyl ether
Ethylbenzene
Hexachloro-1,3-butadiene
Isopropylbenzene
(Cumene)
m&p-Xylene
2708062
MSD
Spike MS MSD MS MSD % Rec
Conc. Result Result % Rec % Rec Limits
ug/L
ND
800
800
912
871
114
109
60-140
ug/L
ND
800
800
1040
1010
130
126
60-140
ug/L
ND
800
800
829
817
104
102
60-140
ug/L
ND
800
800
966
957
121
120
60-140
ug/L
ND
800
800
1010
983
127
123
60-140
ug/L
ND
800
800
1030
1000
129
126
60-140
ug/L
ND
800
800
1040
1020
130
127
60-140
ug/L
ND
800
800
785
884
98
110
60-140
ug/L
ND
800
800
856
855
107
107
60-140
ug/L
ND
800
800
773
811
97
101
60-140
ug/L
275
800
800
1100
1050
103
97
60-140
ug/L
ND
800
800
825
851
103
106
60-140
Max
RPD RPD Qual
5 30
3 30
2 30
1 30
3 30
3 30
2 30
12 30
0 30
5 30
4 30
3 30
ug/L
ND
800
800
896
849
112
106
60-140
5
30
ug/L
ND
800
800
842
828
105
104
60-140
2
30
ug/L
ND
800
800
897
891
112
111
60-140
1
30
ug/L
ND
800
800
943
922
118
115
60-140
2
30
ug/L
103
800
800
982
936
110
104
60-140
5
30
ug/L
ND
800
800
850
811
106
101
60-140
5
30
ug/L
ND
800
800
905
879
113
110
60-140
3
30
ug/L
ND
800
800
835
800
104
100
60-140
4
30
ug/L
ND
800
800
923
945
115
118
60-140
2
30
ug/L
ND
800
800
883
840
110
105
60-140
5
30
ug/L
ND
800
800
858
824
107
103
60-140
4
30
ug/L
405
800
800
1360
1330
119
116
60-140
2
30
ug/L
ND
800
800
870
820
109
102
60-140
6
30
ug/L
ND
800
800
973
948
122
118
60-140
3
30
ug/L
ND
800
800
1020
988
127
123
60-140
3
30
ug/L
ND
800
800
878
861
110
108
60-140
2
30
ug/L
ND
800
800
479
556
60
69
60-140
15
30
ug/L
ND
800
800
1010
967
126
121
60-140
4
30
ug/L
ND
800
800
888
844
111
106
60-140
5
30
ug/L
ND
800
800
1020
977
128
122
60-140
4
30
ug/L
ND
800
800
978
937
122
117
60-140
4
30
ug/L
ND
800
800
710
737
89
92
60-140
4
30
ug/L
ND
800
800
982
961
123
120
60-140
2
30
ug/L
ND
800
800
1000
936
125
117
60-140
7
30
ug/L
ND
800
800
927
889
116
111
60-140
4
30
ug/L
ND
800
800
985
965
123
121
60-140
2
30
ug/L
ND
800
800
1030
981
129
123
60-140
5
30
ug/L
29.2
800
800
917
886
111
107
60-140
3
30
ug/L
161
800
800
1070
1020
114
108
60-140
5
30
ug/L
ND
800
800
819
825
102
103
60-140
1
30
ug/L
ND
800
800
935
885
117
111
60-140
6
30
ug/L
289
1600
1600
2100
2010
113
108
60-140
4
30
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC. Page 22 of 34

aceAnalytical
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
MATRIX SPIKE & MATRIX SPIKE
DUPLICATE: 2708061
2708062
MS
MSD
92448096004
Spike
Spike
MS
MSD
MS
MSD
% Rec
Max
Parameter
Units
Result
Conc.
Conc.
Result
Result
% Rec
% Rec
Limits
RPD
RPD Qual
Methyl-tert-butyl ether
ug/L
5290
800
800
6150
6240
107
119
60-140
2
30
Methylene Chloride
ug/L
ND
800
800
904
866
113
108
60-140
4
30
n-Butylbenzene
ug/L
ND
800
800
836
825
105
103
60-140
1
30
n-Propylbenzene
ug/L
ND
800
800
893
855
112
107
60-140
4
30
Naphthalene
ug/L
ND
800
800
812
904
94
105
60-140
11
30
o-Xylene
ug/L
92.9
800
800
999
959
113
108
60-140
4
30
sec-Butylbenzene
ug/L
ND
800
800
911
870
114
109
60-140
5
30
Styrene
ug/L
ND
800
800
900
858
113
107
60-140
5
30
tert-Butylbenzene
ug/L
ND
800
800
784
747
98
93
60-140
5
30
Tetrachloroethene
ug/L
ND
800
800
939
902
117
113
60-140
4
30
Toluene
ug/L
ND
800
800
943
918
118
115
60-140
3
30
trans-1,2-Dichloroethene
ug/L
ND
800
800
1010
976
127
122
60-140
4
30
trans-1,3-Dichloropropene
ug/L
ND
800
800
920
932
115
116
60-140
1
30
Trichloroethene
ug/L
ND
800
800
990
962
124
120
60-140
3
30
Trichlorofluoromethane
ug/L
ND
800
800
1100
1050
138
131
60-140
5
30
Vinyl chloride
ug/L
ND
800
800
1030
981
129
123
60-140
5
30
1,2-Dichloroethane-d4 (S)
%
104
103
70-130
4-Bromofluorobenzene (S)
%
101
101
70-130
Toluene-d8 (S)
%
99
100
70-130
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 23 of 34

aceAnalytical
-pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
QC Batch: 504173 Analysis Method: SM 6200B
QC Batch Method: SM 6200B Analysis Description: 6200E MSV
Associated Lab Samples: 92448910006, 92448910007
METHOD BLANK: 2709409
Associated Lab Samples: 92448910006, 92448910007
Parameter Units
Matrix:
Blank
Result
Water
Reporting
Limit
MDL
Analyzed
1,1,1,2-Tetrachloroethane
ug/L
ND
0.50
0.25
10/17/19 10:10
1,1,1-Trichloroethane
ug/L
ND
0.50
0.25
10/17/19 10:10
1,1,2,2-Tetrachloroethane
ug/L
ND
0.50
0.25
10/17/19 10:10
1,1,2-Trichloroethane
ug/L
ND
0.50
0.25
10/17/19 10:10
1,1-Dichloroethane
ug/L
ND
0.50
0.25
10/17/19 10:10
1,1-Dichloroethene
ug/L
ND
0.50
0.25
10/17/19 10:10
1,1-Dichloropropene
ug/L
ND
0.50
0.25
10/17/19 10:10
1,2,3-Trichlorobenzene
ug/L
ND
2.0
1.0
10/17/19 10:10
1,2,3-Trichloropropane
ug/L
ND
0.50
0.25
10/17/19 10:10
1,2,4-Trichlorobenzene
ug/L
ND
2.0
1.0
10/17/19 10:10
1,2,4-Trimethylbenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
1,2-Dibromo-3-chloropropane
ug/L
ND
1.0
0.50
10/17/19 10:10
1,2-Dibromoethane (EDB)
ug/L
ND
0.50
0.25
10/17/19 10:10
1,2-Dichlorobenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
1,2-Dichloroethane
ug/L
ND
0.50
0.25
10/17/19 10:10
1,2-Dichloropropane
ug/L
ND
0.50
0.25
10/17/19 10:10
1,3,5-Trimethylbenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
1,3-Dichlorobenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
1,3-Dichloropropane
ug/L
ND
0.50
0.25
10/17/19 10:10
1,4-Dichlorobenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
2,2-Dichloropropane
ug/L
ND
0.50
0.25
10/17/19 10:10
2-Chlorotoluene
ug/L
ND
0.50
0.25
10/17/19 10:10
4-Chlorotoluene
ug/L
ND
0.50
0.25
10/17/19 10:10
Benzene
ug/L
ND
0.50
0.25
10/17/19 10:10
Bromobenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
Bromochloromethane
ug/L
ND
0.50
0.25
10/17/19 10:10
Bromodichloromethane
ug/L
ND
0.50
0.25
10/17/19 10:10
Bromoform
ug/L
ND
0.50
0.25
10/17/19 10:10
Bromomethane
ug/L
ND
5.0
2.5
10/17/19 10:10
Carbon tetrachloride
ug/L
ND
0.50
0.25
10/17/19 10:10
Chlorobenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
Chloroethane
ug/L
ND
1.0
0.50
10/17/19 10:10
Chloroform
ug/L
ND
5.0
2.5
10/17/19 10:10
Chloromethane
ug/L
ND
1.0
0.50
10/17/19 10:10
cis-1,2-Dichloroethene
ug/L
ND
0.50
0.25
10/17/19 10:10
cis-1,3-Dichloropropene
ug/L
ND
0.50
0.25
10/17/19 10:10
Dibromochloromethane
ug/L
ND
0.50
0.25
10/17/19 10:10
Dibromomethane
ug/L
ND
0.50
0.25
10/17/19 10:10
Dichlorodifluoromethane
ug/L
ND
0.50
0.25
10/17/19 10:10
Diisopropyl ether
ug/L
ND
0.50
0.25
10/17/19 10:10
Ethylbenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC. Page 24 of 34

aceAnalytical
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
METHOD BLANK: 2709409
Associated Lab Samples: 92448910006, 92448910007
Parameter Units
Matrix:
Blank
Result
Water
Reporting
Limit
MDL
Analyzed
Hexachloro-1,3-butadiene
ug/L
ND
2.0
1.0
10/17/19 10:10
Isopropylbenzene (Cumene)
ug/L
ND
0.50
0.25
10/17/19 10:10
m&p-Xylene
ug/L
ND
1.0
0.50
10/17/19 10:10
Methyl-tert-butyl ether
ug/L
ND
0.50
0.25
10/17/19 10:10
Methylene Chloride
ug/L
ND
2.0
1.0
10/17/19 10:10
n-Butylbenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
n-Propylbenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
Naphthalene
ug/L
ND
2.0
1.0
10/17/19 10:10
o-Xylene
ug/L
ND
0.50
0.25
10/17/19 10:10
sec-Butylbenzene
ug/L
ND
0.50
0.25
10/17/19 10:10
Styrene
ug/L
ND
0.50
0.25
10/17/19 10:10
tert-Butyl benzene
ug/L
ND
0.50
0.25
10/17/19 10:10
Tetrachloroethene
ug/L
ND
0.50
0.25
10/17/19 10:10
Toluene
ug/L
ND
0.50
0.25
10/17/19 10:10
trans-1,2-Dichloroethene
ug/L
ND
0.50
0.25
10/17/19 10:10
trans- 1,3-Dichloropropene
ug/L
ND
0.50
0.25
10/17/19 10:10
Trichloroethene
ug/L
ND
0.50
0.25
10/17/19 10:10
Trichlorofluoromethane
ug/L
ND
1.0
0.50
10/17/19 10:10
Vinyl chloride
ug/L
ND
1.0
0.50
10/17/19 10:10
1,2-Dichloroethane-d4 (S)
%
103
70-130
10/17/19 10:10
4-Bromofluorobenzene (S)
%
101
70-130
10/17/19 10:10
Toluene-d8 (S)
%
105
70-130
10/17/19 10:10
LABORATORY CONTROL SAMPLE:
Parameter
2709410
Units
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits
1,1,1,2-Tetrachloroethane
ug/L
50
49.1
98
60-140
1,1,1-Trichloroethane
ug/L
50
54.4
109
60-140
1,1,2,2-Tetrachloroethane
ug/L
50
45.6
91
60-140
1,1,2-Trichloroethane
ug/L
50
52.8
106
60-140
1,1-Dichloroethane
ug/L
50
52.0
104
60-140
1,1-Dichloroethene
ug/L
50
52.9
106
60-140
1,1-Dichloropropene
ug/L
50
53.2
106
60-140
1,2,3-Trichlorobenzene
ug/L
50
52.6
105
60-140
1,2,3-Trichloropropane
ug/L
50
48.0
96
60-140
1,2,4-Trichlorobenzene
ug/L
50
48.4
97
60-140
1,2,4-Trimethylbenzene
ug/L
50
47.6
95
60-140
1,2-Dibromo-3-chloropropane
ug/L
50
47.5
95
60-140
1,2-Dibromoethane (EDB)
ug/L
50
49.6
99
60-140
1,2-Dichlorobenzene
ug/L
50
47.4
95
60-140
1,2-Dichloroethane
ug/L
50
48.3
97
60-140
1,2-Dichloropropane
ug/L
50
50.3
101
60-140
1,3,5-Trimethylbenzene
ug/L
50
48.0
96
60-140
1,3-Dichlorobenzene
ug/L
50
46.6
93
60-140
Qualifiers
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC. Page 25 of 34

aceAnalytical
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
LABORATORY CONTROL SAMPLE:
Parameter
2709410
Units
Spike
Conc.
LCS
Result
LCS
% Rec
% Rec
Limits
1,3-Dichloropropane
ug/L
50
50.0
100
60-140
1,4-Dichlorobenzene
ug/L
50
46.3
93
60-140
2,2-Dichloropropane
ug/L
50
57.8
116
60-140
2-Chlorotoluene
ug/L
50
47.7
95
60-140
4-Chlorotoluene
ug/L
50
46.5
93
60-140
Benzene
ug/L
50
51.6
103
60-140
Bromobenzene
ug/L
50
47.3
95
60-140
Bromochloromethane
ug/L
50
52.0
104
60-140
Bromodichloromethane
ug/L
50
54.3
109
60-140
Bromoform
ug/L
50
47.6
95
60-140
Bromomethane
ug/L
50
51.3
103
60-140
Carbon tetrachloride
ug/L
50
52.5
105
60-140
Chlorobenzene
ug/L
50
46.9
94
60-140
Chloroethane
ug/L
50
50.9
102
60-140
Chloroform
ug/L
50
50.0
100
60-140
Chloromethane
ug/L
50
40.9
82
60-140
cis-1,2-Dichloroethene
ug/L
50
51.4
103
60-140
cis-1,3-Dichloropropene
ug/L
50
54.9
110
60-140
Dibromochloromethane
ug/L
50
49.3
99
60-140
Dibromomethane
ug/L
50
52.5
105
60-140
Dichlorodifluoromethane
ug/L
50
52.8
106
60-140
Diisopropyl ether
ug/L
50
48.6
97
60-140
Ethylbenzene
ug/L
50
48.4
97
60-140
Hexachloro-1,3-butadiene
ug/L
50
48.7
97
60-140
Isopropylbenzene (Cumene)
ug/L
50
48.7
97
60-140
m&p-Xylene
ug/L
100
96.3
96
60-140
Methyl-tert-butyl ether
ug/L
50
56.2
112
60-140
Methylene Chloride
ug/L
50
47.2
94
60-140
n-Butylbenzene
ug/L
50
47.2
94
60-140
n-Propylbenzene
ug/L
50
47.5
95
60-140
Naphthalene
ug/L
50
51.0
102
60-140
o-Xylene
ug/L
50
49.2
98
60-140
sec-Butylbenzene
ug/L
50
49.1
98
60-140
Styrene
ug/L
50
48.4
97
60-140
tert-Butyl benzene
ug/L
50
41.8
84
60-140
Tetrachloroethene
ug/L
50
49.3
99
60-140
Toluene
ug/L
50
49.2
98
60-140
trans-1,2-Dichloroethene
ug/L
50
51.2
102
60-140
trans- 1,3-Dichloropropene
ug/L
50
54.7
109
60-140
Trichloroethene
ug/L
50
52.3
105
60-140
Trichlorofluoromethane
ug/L
50
55.7
111
60-140
Vinyl chloride
ug/L
50
53.9
108
60-140
1,2-Dichloroethane-d4 (S)
%
102
70-130
4-Bromofluorobenzene (S)
%
101
70-130
Toluene-d8 (S)
%
99
70-130
Qualifiers
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC. Page 26 of 34

aceAnalytical
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2709411
MS
92448910006 Spike
Parameter Units Result Conc.
1,1,1,2-Tetrachloroethane
1,1,1-Trichloroethane
1,1, 2,2-Tetrachloroethane
1,1, 2-Trichloroethane
1,1-Dichloroethane
1,1-Dichloroethene
1,1-Dichloropropene
1,2,3-Trichlorobenzene
1,2,3-Trichloropropane
1,2,4-Trichlorobenzene
1,2,4-Trimethyl benzene
1,2-Dibromo-3-
chloropropane
1,2-Dibromoethane (EDB)
1,2-Dichlorobenzene
1,2-Dichloroethane
1,2-Dichloropropane
1,3,5-Trimethyl benzene
1,3-Dichlorobenzene
1,3-Dichloropropane
1,4-Dichlorobenzene
2,2-Dichloropropane
2-Chlorotoluene
4-Chlorotoluene
Benzene
Bromobenzene
Bromochloromethane
Bromodichloromethane
Bromoform
Bromomethane
Carbon tetrachloride
Chlorobenzene
Chloroethane
Chloroform
Chloromethane
cis-1,2-Dichloroethene
cis-1,3-Dichloropropene
Dibromochloromethane
Dibromomethane
Dichlorodifluoromethane
Diisopropyl ether
Ethylbenzene
Hexachloro-1,3-butadiene
Isopropylbenzene
(Cumene)
m&p-Xylene
2709412
MSD
Spike MS MSD MS MSD % Rec
Conc. Result Result % Rec % Rec Limits
ug/L
ND
20
20
21.7
22.4
108
112
60-140
ug/L
ND
20
20
25.0
25.7
125
128
60-140
ug/L
ND
20
20
19.8
20.2
99
101
60-140
ug/L
ND
20
20
22.8
23.7
114
118
60-140
ug/L
ND
20
20
24.0
24.2
120
121
60-140
ug/L
ND
20
20
25.3
25.5
127
128
60-140
ug/L
ND
20
20
24.7
25.2
123
126
60-140
ug/L
ND
20
20
19.0
20.8
95
104
60-140
ug/L
ND
20
20
20.6
21.5
103
107
60-140
ug/L
ND
20
20
18.3
20.2
91
101
60-140
ug/L
ND
20
20
19.9
21.2
100
106
60-140
ug/L
ND
20
20
19.5
20.3
98
102
60-140
Max
RPD RPD Qual
3 30
3 30
2 30
4 30
1 30
1 30
2 30
9 30
4 30
10 30
6 30
4 30
ug/L
ND
20
20
20.8
21.8
104
109
60-140
5
30
ug/L
ND
20
20
19.8
21.2
99
106
60-140
7
30
ug/L
ND
20
20
22.0
22.0
110
110
60-140
0
30
ug/L
ND
20
20
22.6
22.3
113
112
60-140
1
30
ug/L
ND
20
20
20.7
21.9
104
109
60-140
5
30
ug/L
ND
20
20
19.9
21.0
99
105
60-140
5
30
ug/L
ND
20
20
21.3
22.2
107
111
60-140
4
30
ug/L
ND
20
20
19.4
20.6
97
103
60-140
6
30
ug/L
ND
20
20
26.4
26.3
132
131
60-140
1
30
ug/L
ND
20
20
20.2
21.2
101
106
60-140
5
30
ug/L
ND
20
20
20.1
21.3
100
107
60-140
6
30
ug/L
ND
20
20
23.3
23.7
116
119
60-140
2
30
ug/L
ND
20
20
20.1
21.0
101
105
60-140
4
30
ug/L
ND
20
20
24.2
23.5
121
117
60-140
3
30
ug/L
ND
20
20
24.3
25.2
122
126
60-140
3
30
ug/L
ND
20
20
20.0
21.7
100
108
60-140
8
30
ug/L
ND
20
20
18.6
18.4
93
92
60-140
1
30
ug/L
ND
20
20
24.4
25.4
122
127
60-140
4
30
ug/L
ND
20
20
21.0
21.2
105
106
60-140
1
30
ug/L
ND
20
20
24.8
25.6
124
128
60-140
3
30
ug/L
ND
20
20
23.4
23.6
117
118
60-140
1
30
ug/L
ND
20
20
19.6
20.1
98
100
60-140
3
30
ug/L
ND
20
20
23.7
23.4
119
117
60-140
1
30
ug/L
ND
20
20
23.9
24.3
120
122
60-140
2
30
ug/L
ND
20
20
21.7
22.0
109
110
60-140
1
30
ug/L
ND
20
20
23.2
23.5
116
117
60-140
1
30
ug/L
ND
20
20
25.6
25.9
128
129
60-140
1
30
ug/L
ND
20
20
21.6
21.6
107
107
60-140
0
30
ug/L
ND
20
20
21.7
22.2
108
111
60-140
2
30
ug/L
ND
20
20
19.9
21.9
99
110
60-140
10
30
ug/L
ND
20
20
21.8
22.4
109
112
60-140
3
30
ug/L
ND
40
40
43.7
44.5
109
111
60-140
2
30
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC. Page 27 of 34

aceAnalytical
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Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
MATRIX SPIKE & MATRIX SPIKE
DUPLICATE: 2709411
2709412
MS
MSD
92448910006
Spike
Spike
MS
MSD
MS
MSD
% Rec
Max
Parameter
Units
Result
Conc.
Conc.
Result
Result
% Rec
% Rec
Limits
RPD
RPD Qual
Methyl-tert-butyl ether
ug/L
ND
20
20
24.4
24.8
122
124
60-140
1
30
Methylene Chloride
ug/L
ND
20
20
20.7
21.0
104
105
60-140
1
30
n-Butylbenzene
ug/L
ND
20
20
19.4
21.6
97
108
60-140
11
30
n-Propylbenzene
ug/L
ND
20
20
20.5
22.0
103
110
60-140
7
30
Naphthalene
ug/L
ND
20
20
18.4
20.2
92
101
60-140
9
30
o-Xylene
ug/L
ND
20
20
22.1
22.5
111
113
60-140
2
30
sec-Butylbenzene
ug/L
ND
20
20
21.1
22.8
105
114
60-140
8
30
Styrene
ug/L
ND
20
20
21.3
21.6
106
108
60-140
1
30
tert-Butylbenzene
ug/L
ND
20
20
18.2
19.3
91
96
60-140
6
30
Tetrachloroethene
ug/L
ND
20
20
22.6
22.8
113
114
60-140
1
30
Toluene
ug/L
ND
20
20
22.5
23.0
112
115
60-140
2
30
trans-1,2-Dichloroethene
ug/L
ND
20
20
24.1
24.7
121
123
60-140
2
30
trans-1,3-Dichloropropene
ug/L
ND
20
20
23.0
24.2
115
121
60-140
5
30
Trichloroethene
ug/L
ND
20
20
23.3
24.5
116
122
60-140
5
30
Trichlorofluoromethane
ug/L
ND
20
20
27.0
27.2
135
136
60-140
1
30
Vinyl chloride
ug/L
ND
20
20
26.0
26.3
130
132
60-140
1
30
1,2-Dichloroethane-d4 (S)
%
105
101
70-130
4-Bromofluorobenzene (S)
%
102
100
70-130
Toluene-d8 (S)
%
101
102
70-130
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 28 of 34

aceAnalytical
—pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
QC Batch: 503063 Analysis Method: EPA 300.0 Rev 2.1 1993
QC Batch Method: EPA 300.0 Rev 2.1 1993 Analysis Description: 300.0 IC Anions
Associated Lab Samples: 92448910001, 92448910002, 92448910003, 92448910004, 92448910005, 92448910006, 92448910007
METHOD BLANK: 2704025 Matrix: Water
Associated Lab Samples: 92448910001, 92448910002, 92448910003, 92448910004, 92448910005, 92448910006, 92448910007
Blank Reporting
Parameter Units Result Limit MDL Analyzed Qualifiers
Sulfate mg/L ND 1.0 0.50 10/11/1915:53
LABORATORY CONTROL SAMPLE: 2704026
Spike LCS LCS % Rec
Parameter Units Conc. Result % Rec Limits Qualifiers
Sulfate mg/L 50 50.3 101 90-110
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2704027 2704028
MS MSD
92448413015 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Sulfate mg/L 553 50 50 603 602 99 97 90-110 0 10
MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 2704029 2704030
MS MSD
92448413025 Spike Spike MS MSD MS MSD % Rec Max
Parameter Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual
Sulfate mg/L 1580 50 50 1650 1640 139 122 90-110 0 10 M6
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC.
Page 29 of 34

aceAnalytical
—pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALIFIERS
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL -Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean -Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI -The NELAC Institute.
LABORATORIES
PASI-A Pace Analytical Services - Asheville
PASI-C Pace Analytical Services - Charlotte
ANALYTE QUALIFIERS
M6 Matrix spike and Matrix spike duplicate recovery not evaluated against control limits due to sample dilution.
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/17/2019 02:13 PM without the written consent of Pace Analytical Services, LLC. Page 30 of 34

aceAnalytical
—pacelabs.com
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Project: Preslars Exxon NCDOT WBS
Pace Project No.: 92448910
Lab ID Sample ID QC Batch Method QC Batch
92448910001
MW-1
SM 6200B
503896
92448910002
MW-3
SM 6200B
503896
92448910003
MW-13
SM 6200B
503896
92448910004
MW-4
SM 6200B
503896
92448910005
MW-12
SM 6200B
503896
92448910006
WSW-11
SM 6200E
504173
92448910007
WSW-10
SM 6200E
504173
92448910001
MW-1
EPA 300.0
Rev 2.1 1993
503063
92448910002
MW-3
EPA 300.0
Rev 2.1 1993
503063
92448910003
MW-13
EPA 300.0
Rev 2.1 1993
503063
92448910004
MW-4
EPA 300.0
Rev 2.1 1993
503063
92448910005
MW-12
EPA 300.0
Rev 2.1 1993
503063
92448910006
WSW-11
EPA 300.0
Rev 2.1 1993
503063
92448910007
WSW-10
EPA 300.0
Rev 2.1 1993
503063
Date: 10/17/2019 02:13 PM
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Analytical Method
Analytical
Batch
Page 31 of 34

Document Name: , Document Revised: February 7,1111
Sam la CpndItiort U an Racei t SCUR} Page 1 °f Z
r?CBytfCal Docurttent No.. IssuingAuthority:
F•CAR-CS fl33-Rev.Q6 Pace Carolinas Qual Offrce
Laboratory receiving samples:
Asheville 0 Eden[] Greenwood ❑ Huntersville ❑ Raleighq Mechanicsville❑
cllentt�arne: WO# : 92448910
� � , Project #:
]
❑Fed E
Couriers Fed Ex ❑UPS ❑LISPS
❑ Commercial ❑Face []Other, 92446910
Custody Seal Present? QYes L lq'o Seals Intact? ❑yes PC"'
Date/initials Parson Examining Carrtettts:
Packing Material: 2ubble Wrap []Bubble Sags []None ❑ Other Brologfcai Tissue Frozen?
[]Yes ❑No []N/AThermometer: r r Type of Ice: g<t ❑Blue ❑Nona
❑IR Gun ID: ! 'J�
Cooler Temp ('C):� _ Correction Factor: Add Subtract C) fy01. L--
Tempshould be above freezing to 6°C
Cooler Temp Corrected ('C): Dampfes out of temp criteria. samples on Ice, cooling process
has begun
USDA Regulated Soil (r , A, watersampfe)
Dfd samples originate in a quarantloe zone 4hin the United States: CA, NY, or Sc (check maps)? Did Samples agnate from a foreign source (intemat oak
includlnafiawrall and Puerto Rim)? ❑Y []NO
Chain of custody Present?
es
❑No
EINIA
1.
SamplesAnived within Hold Time?
'L.fYes
[]No
QN/A
7•
short Hold lime Analysis <72 hr,)?
❑Yes
Mt L6—
N/A
3.
Rush Turn Around Time Requested?
Ely.
o
❑N/A
4-
Sufficient Volume?
Bf-.
ON.
N/A
S.
Correct Containers Used?
[ems
[]No
[I N/A
6.
-Pace Containers Used?
as
No
❑N/A
Containers Intact?
2<
❑No
ONIA
7.
DlssoNad analysis: Samples Field Filtered?
❑Na
8.
Sample Labels Match CDC?
es
©No
❑N/A
4.
Includes Date/lime/ID/Analysis Matrix
Headspace In VOA Vials [>5-5mm)7 ❑Yes N❑ NIA 10.
Trip Blank Present? ❑Yes ❑No IS.
TrIn Blank Custody Seals Present? Yes QN0 NIA
CDMMENT5/5AMFLE DfSCREPANCY flefd Data Required? []Yes ❑No
Lot ID of split containers:
CLIENT NOTIFICATION/RESOLUTION
Person contacted, - Date/Time:
Project Manager SCURF Review: Data: I��O
1% Page 32 of 34
Project Manager SRF Review: Date:

Document Name:
Condltlon Upon Racel
Document No.:
FCAR-CS-033-Rev.06
*Check mark top half of boat If pH andjor dechlorfnation is
verified and within the acceptance range for preservation
samples.
£xcepVons: VOA, Colf€orm, TDC, Oil and Grease, DRO/8015 (water) DOC, LLHg
**Bottom half of box is to fist number of bottle
Document Revised: February 7, 2018
Page 1 of 2
[ssufng A
Pace Carolinas
Project # W❑# : 92448910
PM: PTE oule Date: 10/16/19
CLIENT: 92—DRAPER
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pH Adjustment Log for Preserved Samples
Sample iD Type of Preservative pH upon �rerelptOate preservatiart adjusted Time preseration Amount of Presumthre Lot f
adjusted added
Notes Whenever there is a discrepancy affecting Alerth Carollna compliance samplas, a copy of thls form will be sent to the Nor-0 Caro4lna D@HhlR CertSflcatlon Office (i.e•Page 33 of 34
Out of hold, incorrect preservaO/e, out of tamp, incarrectcontainers.

ITEM t
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(YIN)
JE,
ge 34 of 34

APPENDIX B
GROUNDWATER CONCENTRATION TRENDS IN SELECTED WELLS

MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
Evaluation Date: 30-Oct-19 Job ID: 17117301-030701
Facility Name:I Former Preslar's Exxon Constituent: Benzene
Conducted By: I Branson Concentration Units: u /1
Sampling PointlD:
MW-1 I MW-4 I MW-13
• •
1
5/5/15
15.0
503
88.4
2
6/16/15
5.3
733
40.8
3
8/11/15
15.7
960
171
4
11/16/15
4.0
419
15.3
5
3/1/16
1.3
159
46.9
6
1 10/17/16
0.3
287
17.9
7
3/13/2017
0.3
155
26.6
8
10/3/2017
0.3
391
63.9
9
10/8/2018
0.3
650
26
10
10/8/2019
0.3
505
25.2
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:
i
Mann -Kendall Statistic (S):
Confidence Factor:
• ' .
Concentration Trend:
1000
tMW-1
BMW-4
100
BMW-13
7
C
O
:_10
�a
L
U 1
C
O
U
0.1
12114 07115 01116 08116 03/17 09117 04118 10118 05/19 12/19
Sampling Date
Notes:
1. At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2. Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
>_ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S:50, and COV >_ 1 = No Trend; < 90% and COV < 1 = Stable.
3. Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann -Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI Environmental Inc., www.gsi-netcom

MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
Evaluation Date: 30-Oct49 Job ID: 17117301-030701
Facility Name:I Former Preslar's Exxon Constituent: Benzene
Conducted By: I Branson Concentration Units: u /1
Sampling Point ID:
MW4 MW-13
1
5/5/15
33.9 286
2
6/16/15
65.2
91.2
3
8/11/15
125
325
4
11/16/15
118
68.2
5
3/1/16
19.4
61.2
6
10/17/16
20.1
29.9
7
3/13/2017
27.2
17.9
8
10/3/2017
107
195
9
10/8/2018
98
120
10
10/8/2019
30.7
16.6
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:
Mann -Kendall Statistic (S):
Confidence Factor:
Concentration Trend:
Stable Decreasing
t M W-4
M W-13
100
c
O
L
10
U
C
_
O
U
1
12114 07115 01116 08116 03117 09117 04118 10118 05119 12119
Sampling Date
Notes:
1. At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2. Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
>_ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S:50, and COV >_ 1 = No Trend; < 90% and COV < 1 = Stable.
3. Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann -Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI Environmental Inc., www.gsi-netcom

MANN-KENDALL TOOLKIT
for Constituent Trend Analysis
Evaluation Date: 30-Oct49 Job ID: 17117301-030701
Facility Name:I Former Preslar's Exxon Constituent: I Sulfate
Conducted By: I Branson Concentration Units: u /I
Sampling Point ID:J
WSW-11
• •
1
5/5/15
32.1
2
6/16/15
115.0
3
8/11/15
178.0
4
11/16/15
104.0
5
1 3/1/16
78.0
6
10/17/16
118.0
7
3/13/2017
8
10/3/2017
59.5
9
10/8/2018
39.0
10
10/8/2019
42.8
11
12
13
14
15
16
17
18
19
20
Coefficient of Variation:
Mann -Kendall Statistic (S):
Confidence Factor:
Concentration Trend:
--*.—WSW-
-
11
100
c
O
Q 10
U
C
O
U
1
12114 07115 01116 08116 03117 09117 04118 10118 05119 12119
Sampling Date
Notes:
1. At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples.
2. Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing;
>_ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S:50, and COV >_ 1 = No Trend; < 90% and COV < 1 = Stable.
3. Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales,
Ground Water, 41(3):355-367, 2003.
DISCLAIMER: The GSI Mann -Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without
limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such
party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in
this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein.
GSI Environmental Inc., www.gsi-netcom

1000
100
0.1
Baseline 8/11/2015 3/1/2016 3/13/2017 10/8/2018
DATE
f Benzene
t Sulfate
Benzene NCAC 2L
Standard

1000
100
0.1
MW4
Baseline 8/11/2015 3/1/2016 3/13/2017 10/8/2018
DATE
f Benzene
Sulfate
Naphthalene
Benzene NCAC 2L
Standard
• Naphthalene NCAC 2L
Standard

1000
100
rim
MW-13
Full Scale Injection
Baseline 8/11 /2015 3/1 /2016 3/13/2017 10/8/2018
DATE
t Benzene
t Sulfate
--+(— Naphthalene
— — Benzene NCAC 2L
Standard
• Naphthalene NCAC
2L Standard