WS-2467_3510_CA_MRP_20220811

WithersRavenel
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115 MacKenan Drive | Cary, NC 27511
t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F-1479
Asheville | Cary | Greensboro | Pittsboro | Raleigh | Wilmington

MONITORING REPORT

Needham Service Station
NCDEQ Incident # 3510
UST # WS-2467
719 East Main Street
Pilot Mountain, Surry County, North Carolina
WithersRavenel Project No. 02172214.50

Prepared for:
State of North Carolina Department of Environmental Quality Division of Waste Management Underground Storage Tank Section Federal & State Lead Program 1646 Mail Service Center Raleigh, North Carolina 27699-1646
Prepared by:
WithersRavenel
115 MacKenan Drive Cary, North Carolina 27511 North Carolina Firm License No. F-1479
August 11, 2022
WithersRavenel
Our People. Your Success.
115 MacKenan Drive | Cary, NC 27511
t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F-1479
Asheville | Cary | Greensboro | Pittsboro | Raleigh | Wilmington
August 11, 2022 State of North Carolina
Department of Environmental Quality Federal & State Lead Program Division of Waste Management-Underground Storage Tank Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646
Attn: Mr. Mark Petermann Re: Monitoring Report Needham Service Station 719 East Main Street Pilot Mountain, Surry County, North Carolina
Groundwater Incident Number: 3510
UST Number: WS-2467 WR Project Number: 02172214.50 Mr. Petermann:
WithersRavenel, Inc. (WR) has completed this Monitoring Report to document completion of a monitoring well sampling event at the site. Activities completed at the site were in association with our proposal TA-04, approved by the Federal & State Lead Program on June 15, 2022.
The enclosed report summarizes results of the recently completed monitoring activities. WR appreciates the opportunity to be of service to the Federal & State Lead Program. Should you have any questions regarding the attached, please contact us at [phone].
Cordially, WithersRavenel

Flora D’Souza, CHMM Elizabeth A. Allyn, P.G. Environmental Project Scientist II Environmental Project Geologist II
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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 i

TABLE OF CONTENTS

SECTION A. SITE INFORMATION .................................................................................................................... 1
SECTION B. EXECUTIVE SUMMARY ............................................................................................................... 3
SECTION C. SITE HISTORY & SOURCE CHARACTERISTIZATION ......................................................... 5
SECTION D. SITE GEOLOGY AND HYDROGEOLOGY .............................................................................. 9
SECTION E. GROUNDWATER INVESTIGATION – JULY 2022 ............................................................. 10
SECTION F. CONCLUSIONS & RECOMMENDATIONS .......................................................................... 12

FIGURES
Figure 1 General Location Map
Figure 2 Site Map
Figure 3 Receptor Map
Figure 4 Hydraulic Gradient Map – July 2022
Figure 5 Groundwater Analytical Results Map – July 2022
Figure 6 Benzene Isoconcentration Map – July 2022
Figure 7 EDB Isoconcentration Map – July 2022

TABLES
Table B-1 Site History: UST/AST System & Other Release Information
Table B-4 Summary of Groundwater Analytical Results
Table B-5A Public & Private Water Supply Well Information
Table B-9 Current & Historical Groundwater Elevations & LNAPL Thickness

APPENDICES
Appendix A Laboratory Analytical Report and Chain-of-Custody
Appendix B Field Notes and Photographic Record
Appendix C General Standard Operating Procedures

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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 1
SECTION A. SITE INFORMATION
1. Site Identification
Date of Report: August 11, 2022
Facility I.D.: Not Applicable
Incident No.: 3510
UST No.: WS-2467
Site Risk: I0210D
Site Rank: Intermediate
Land Use Category: Commercial
Site Name: Needham Service Station
Site Location: 719 East Main Street
Nearest City/Town: Pilot Mountain
County: Surry
Description of Geographical Data Point: Center of Former UST Area
Location Method: Google Earth
Latitude: 36.382260°
Longitude: -80.454440°
2. Contact Information
Responsible Party: C.B. Roberson, Inc.
Address: Halifax, VA
Phone: Unk

Property Owner/Occupant: J-N-R Autos and At The Fork Flea Market
Address: 719 East Main Street
Phone: Unknown

Consultant/Contractor: WithersRavenel
Address: 115 MacKenan Drive, Cary, NC 27511
Phone: [phone]

Analytical Laboratory: Waypoint Analytical, Inc.
State Certification Number: ENV402
Address: 449 Springbrook Rd., Charlotte, NC 28217
Phone: [phone]

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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 3
SECTION B. EXECUTIVE SUMMARY
1. Summary of Activities Associated with Current TA
WithersRavenel, Inc. (WR) conducted a groundwater monitoring event at the Needham Service Station incident located at 719 East Main Street in Pilot Mountain, Surry County, North Carolina. These activities were completed in association with task authorization (TA) TA-04, under North
Carolina Department of Environmental Quality (NCDEQ) Contract #N122019B. The scope of work for this project included the sampling of monitoring wells MW-2, MW-5, MW-6R, MW-7, MW-9, MW-12, MW-13, and MW-14. A car was parked over MW-5, MW-11 could not be
located, and light non-aqueous phase liquid (LNAPL) was identified in MW-13; therefore, these wells were not sampled. 2. Soil, Groundwater and LNAPL Assessment Information

Soils The UST system was removed in October 1991. Soil borings advanced in the vicinity of the USTs in 1987 identified elevated Total Petroleum Hydrocarbon (TPH) concentrations in soil. Soil assessment activities conducted during the installation of MW-12 and MW-14 identified several petroleum compounds between 5 and 10 feet below ground surface at concentrations that
exceeded the Soil-to-Groundwater Maximum Soil Contaminant Concentrations (MSCCs). C9-C18 Aliphatic hydrocarbons were reported in MW-12 (10’) at a concentration that exceeded the Residential MSCC. TPH-Gasoline Range Organics (GRO) concentrations above the NCDEQ standard of 50 mg/kg extended to 20 feet below ground surface (ft bgs) in the MW-12 boring. Soil sampling was not conducted during the installation of the SVE wells in December 2021.
Groundwater Laboratory results for the groundwater samples obtained from monitoring wells MW-6R and MW-14 on July 6, 2022, revealed benzene at concentrations that exceeded the Gross Contamination Level (GCL). Additionally, EDB was reported in MW-6R at a concentration that exceeded the GCL
for the compound. Several additional compounds were reported at concentrations that exceeded their respective 15A NCAC 2L Groundwater Quality Standards (2L Standards) in monitoring wells MW-2, MW-6R, MW-7, MW-12, and MW-14.
LNAPL
LNAPL was measured in MW-13 at a thickness of 0.07 feet in July 2022. LNAPL has been consistently measured in MW-13 since the well was installed in March 2015. LNAPL has also historically been identified in MW-2 and MW-6R but has not been detected since January 2010.
3. Receptor Information
According to historical reporting, municipal water is available to the site and surrounding area. WR
has not updated the receptor information under NCDEQ Contract #N122019B. The following
information is based on historical receptor information from December 2008:
• One active supply well, WSW-1, is located approximately 1,300 feet downgradient of the
subject property.
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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 4
• One inactive supply well, WSW-4 is located within 500 feet and upgradient of the subject property.
• Supply well WSW-2, an inactive supply well, is located approximately 530 feet cross-gradient of the subject property, and
• Supply well WSW-3, an active supply well, is located approximately 1,400 feet upgradient
of the subject property.
• The addresses of both WSW-2 and WSW-4 are reportedly connected to the municipal water system.
One intermittent blue line tributary of Toms Creek was identified approximately 720-feet east
northeast of the subject property. According to the SWAP Mapping Application, no wellhead protection areas are located within 1,500-feet of the subject property. The SWAP Mapping Application indicates the site is located
within the Stream Zone Inside Protection Area for the Town of Pilot Mountain (PWS ID:
NC0286025). 4. Remediation Activities
Along with the closure of the UST system, the following remedial activities have occurred:

• AFVR Events: October 2011, May 2011, and January 2012 recovered vapor as gasoline equivalent to 75 gallons, 188 gallons, and 3 gallons, respectively. A mobile multi-phase
extraction (MMPE) event performed in August 2012 using monitoring wells MW-2 and MW-
6R recovered 87 gallons of gasoline as vapor.
• A hybrid air sparge/MMPE event performed in April 2019 using monitoring wells MW-2 (as an air sparge well), and MW-6R, MW-13 and MW-14 (as extraction wells), recovered
approximately 70 gallons of gasoline as vapor and 4,560 gallons of LNAPL/water mixture,
including approximately 92 gallons of gasoline as liquid. 5. Recommendations
Based on the results of assessment and monitoring activities conducted at the site in association
with this TA, WR recommends the following if funding levels are sufficient:
• Complete a receptor survey update to gather information on the current use of water supply
wells within 1,500 feet of the subject property.
• Replace monitoring wells MW-2 and MW-7 due to the submerged well screens.
• Install one Type II monitoring well to the northwest of monitoring well MW-7 to delineate
contaminants of concern.
• Semi-annual air sparge enhanced-MMPE events.
• Continue semi-annual monitoring of site monitoring wells.

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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 5
SECTION C. SITE HISTORY & SOURCE CHARACTERIZATION The following information summarizes the site history and characterization.
1. UST Information The site is located at 719 East Main Street in Pilot Mountain, Surry County, NC (Figure 1). Three 4,000-gallon gasoline USTs were removed from one UST basin at site in October 1991 (Figure 2). UST information is provided in Table B-1.
2. Description of Release/General Assessment History The following summary of the assessment history is based on WR’s review of historical files for the subject incident:

• August 18, 1987 - a release due to a leaking elbow joint in the product pipeline was reported to the Surry County Fire Marshall. On October 22, 1991, three 4,000-gallon
gasoline USTs were removed from the site. Based on a Groundwater Investigation and
Remedial Action Plan by Engineering Tectonics (ET), dated July 22, 1988, nine groundwater monitoring wells (MW-1, 2, 3, 4, 5, 6, 7, 8, 9) were installed at the site and northeast of the site at 723 (Hurst Garage) and 733 52 Bypass located across Highway 52 Bypass from the subject site.
• April 2004 to January 2005 - Geological Resources, Inc. (GRI) sampled the site monitoring wells not containing LNAPL and one water supply well, WSW-1. LNAPL was noted in monitoring well MW-2 during the sampling events. Petroleum constituent concentrations greater than the 2L Standards were detected in samples collected from multiple monitoring
wells. Concentrations greater than the GCLs were reported in monitoring wells MW-6R,
MW-7 and MW-8. Monitoring wells MW-1, MW-4 and MW-6 were destroyed during winter plowing activities. MW-6R was installed in 2004 as a replacement to MW-6. In August 2004. An MMPE event was conducted on monitoring wells MW-2 and MW-6R with 3,514 gallons of liquid removed. A total of 18 gallons of LNAPL was recovered.
• March 2006 to May 21, 2007 - Terraine sampled the site monitoring wells not containing LNAPL and two water supply wells (WSW-1 and WSW-3). MW-11 was installed on May 21, 2007. LNAPL was noted in MW-2, MW-3 and MW-6R during the sampling event on May 24, 2007. This occurrence of measurable LNAPL in MW-3 was the only event since its installation. Constituent concentrations greater than the 2L Standards were reported in
multiple monitoring wells and GCL exceedances were reported for benzene, ethylene dibromide (EDB) and 1, 2-dichloroethane (1,2-DCA) in monitoring well MW-7.
• November 20, 2008 - Terraine conducted a monitoring event including 10 monitoring wells
(MW-1R, MW-2, MW-3, MW-5, MW-6R, MW-7, MW-8, MW-9, MW-10, and MW-11)
and one water supply well (WSW-1). LNAPL was observed in MW-6R at a thickness of 0.14 feet. The lab results from the collected samples indicated petroleum constituent concentrations greater than the 2L Standards in five monitoring wells (MW-1R, MW-5, MW-8, MW-9, MW-11) with concentrations of benzene, EDB and 1, 2-DCA in MW-2, and
benzene in MW-7, at levels greater than their corresponding GCLs.
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• January 5 and 15, 2010 - S&ME conducted a monitoring event including eight monitoring wells (MW-1R, MW-3, MW-5, MW-7, MW-8, MW-9, MW-10, MW-11) and one water
supply well (WSW-1). LNAPL was observed in MW-2 (0.02 feet) and in MW-6R (0.11 feet).
The lab results from the collected samples indicated petroleum constituent concentrations greater than the 2L Standards in four monitoring wells (MW-5, MW-7, MW-9, and MW-11). A water sample was collected from water supply well WSW-1 on January 15, 2010. No petroleum constituents were reported above the laboratory reporting limits.
• October 15, 2010 - S&ME conducted an 8-hour AFVR event on MW-2 and MW-6R. During the AFVR event, approximately 472 pounds of vapor phase hydrocarbons were removed, which corresponds to approximately 75 gallons of gasoline recovered.
• October 15 and 25, 2010 - S&ME conducted a monitoring well sampling event on
monitoring wells MW-2, MW-5, MW-6R, MW-7, MW-8, MW-9, and MW-11. Each sample contained several constituent concentrations greater than the 2L Standards. Concentrations in monitoring wells MW-2, MW-5, MW-6R, MW-7, MW-8, MW-9, and MW-11 appeared to be decreasing relative to the November 2008 sampling event.
• May 11, 2011 - S&ME conducted an 8-hour AFVR event using monitoring wells MW-2 and MW-6R. Prior to the AFVR event, no LNAPL was measured in MW-2 or MW-6R. A total of 1,197 gallons of total fluids was removed, and an estimated total of 1,177 pounds of vapor phase hydrocarbons (which corresponds to approximately 188 gallons of gasoline)
was recovered from MW-2 and MW-6R.
• May 11 and 24, 2011 - S&ME collected groundwater samples from monitoring wells MW-1R, MW-2, MW-5, MW-6R, MW-7, MW-8, MW-9, and MW-11. All sampled wells contained several constituent concentrations greater than the corresponding 2L
Standards. Benzene was detected above the GCL in monitoring wells MW-2, MW-6R, and
MW-7. EDB was detected above the GCL in monitoring well MW-6R.
• January 4, 2012 - S&ME conducted an 8-hour AFVR event using monitoring wells MW-2 and MW-6R. Prior to the AFVR event, no LNAPL was measured in MW-2 or MW-6R. A
total of 855 gallons of total fluids was removed, and an estimated total of 16 pounds of
vapor phase hydrocarbons (which corresponds to approximately 3 gallons of gasoline) was recovered from MW-2 and MW-6R.
• February 22 and 23, 2012 - S&ME was on-site to measure the depth to water and LNAPL,
and to collect groundwater samples from monitoring wells without LNAPL. Monitoring
wells MW-2, MW-5, MW-6R, MW-7, MW-8, MW-9 and MW-11 contained several constituent concentrations greater than the corresponding 2L Standards, with the highest concentrations detected in monitor well MW-6R. Benzene was detected above the GCL in monitoring wells MW-2, MW-6R, and MW-7. EDB exceeded the GCL in monitoring well
MW-6R.
• September 19, 2012 - S&ME collected groundwater samples from monitoring wells without LNAPL. Monitoring wells MW-2, MW-5, MW-6R, MW-7, MW-8, MW-9 and MW-11 contained several constituent concentrations greater than the corresponding 2L Standards, with the highest concentrations detected in monitor well MW-6R. Benzene was
detected above the GCL in monitoring wells MW-2, MW-6R, and MW-7. EDB exceeded the GCL in monitoring well MW-6R.
• April 2014 - S&ME completed a groundwater sampling event (Groundwater Monitoring
Report dated May 16, 2014). Dissolved petroleum concentrations were reported in the site
groundwater at concentrations greater than GCLs.
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• March 12, 2015 - S&ME installed soil borings MW-12, MW-13, and MW-14. MW-12 was installed near the reported, former line leak location, MW-13 was installed in the apparent
downgradient position to the former UST basin, and MW-14 was installed at the former
dispenser. Each soil boring was extended to approximately 44 feet to 46 feet below the ground surface. Soil samples were collected at periodic intervals during the performance of each soil boring and screened in the field with a photoionization meter (PID). PID readings at each soil boring location measured greater than 15,000 parts per million (ppm)
from near the ground surface to the termination depth. Soil samples at soil boring MW-
12 were selected from the 10 feet, 20 feet and 30 feet depth intervals for laboratory analysis. Soil samples at soil boring MW-14 were selected from the 5 feet, 15 feet and 25 feet depth intervals for laboratory analysis. No soil samples were selected from soil boring MW-13 for laboratory analysis. TPH-GRO was reported in samples collected from the 10-
and 20-feet depth intervals at MW-12, and from the 5- and 15-feet depth interval at MW-
14. TPH-GRO was not reported in the sample collected from 30 feet at MW-12, or from 25 feet at MW-14. Multiple petroleum constituents were reported in samples MW-12-10 and MW-14-5 at concentrations greater than the Soil-to-Groundwater MSCCs. Only C9-C18 Aliphatics were reported at a concentration greater than the Residential MSCC. No
target analytes were reported at concentrations greater than the Industrial/Commercial
MSCCs. Each well was constructed of Schedule 40 PVC with a 15-foot length of well screen set at the bottom of the borehole.
• March 13, 2015 - S&ME was on-site to gauge depth-to-water and collect groundwater samples from monitoring wells MW-1R, MW-2, MW-3, MW-6R, MW-7, MW-11, MW-12,
MW-13, and MW-14. Multiple compounds were reported in the groundwater samples at concentrations exceeding the 2L Standards. Benzene was reported in monitor wells MW-7 and MW-14 at concentrations exceeding the GCL for the compound. EDB was reported in sample MW-14 at a concentration greater than the GCL. LNAPL was measured at a
thickness of 0.64 foot in newly installed monitor well MW-13.
• August 20, 2020 – S&ME collected groundwater samples from MW-2, MW-3, MW-6R, MW-7, MW-9, MW-12, and MW-14. Benzene was reported in monitoring wells 6R and MW-14 at concentrations greater than the GCL. EDB was reported in monitoring well MW-14 at a concentration greater than the GCL. Several petroleum related constituents
in monitoring wells MW-2, MW-6R, MW-7, MW-9, MW-12, and MW-14, were reported at concentrations greater than their corresponding 2L Standards. LNAPL was measured at a thickness of 1.00 foot in MW-13.
• April 21, 2021 – WR collected groundwater samples from MW-2, MW-5, MW-6R, MW-7,
MW-8, MW-11, MW-12, and MW-14. Benzene was reported in monitoring wells 6R and MW-14 at concentrations greater than the GCL. EDB was reported in monitoring well MW-14 at a concentration greater than the GCL. Several petroleum related constituents in monitoring wells MW-2, MW-6R, MW-7, MW-9, MW-12 and MW-14, were reported
at concentrations greater than their corresponding 2L Standards. LNAPL was measured at
a thickness of 1.18 foot in MW-13.
• December 2, 2021 – WR and Quantex, Inc. mobilized to the subject property to install three, type 2, SVE wells (SVE-1, SVE-2, and SVE-3) within the former UST basin on the
subject property.

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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 8
3. Brief Description of Site Characteristics The 1.0-acre property is located in Pilot Mountain, Surry County, North Carolina (Figure 1), addressed as 719 East Main Street (Surry County Parcel I.D. No. 597617210212). The property
includes one-story brick office building operated as J-N-R Auto, LLC, a used car dealership. Surface drainage through the area generally follows topography or is channeled through sub-surface stormwater structures or wet-weather ditches running parallel to primary and secondary roadways.
4. Information on Receptors/Potential Receptors According to historical reporting, municipal water is available to the site and surrounding area. WR
has not updated the receptor information under NCDEQ Contract #N122019B. The following information is based on historical receptor information from December 2008:
• One active supply well, WSW-1, is located approximately 1,300 feet downgradient of the subject property.
• One inactive supply well, WSW-4 is located within 500 feet and upgradient of the subject
property.
• Supply well WSW-2, an inactive supply well, is located approximately 530 feet cross-gradient of the subject property, and
• Supply well WSW-3, an active supply well, is located approximately 1,400 feet upgradient
of the subject property.
• The addresses of both WSW-2 and WSW-4 are reportedly connected to the municipal water system.

Receptor information is illustrated on Figure 3 and Table B-5A. One intermittent blue line tributary of Toms Creek was identified approximately 720-feet east northeast of the subject property.

According to the SWAP Mapping Application, no wellhead protection areas are located within 1,500-feet of the subject property. The SWAP Mapping Application indicates the subject property is located within the Stream Zone Inside Protection Area for the Town of Pilot Mountain (PWS ID: NC0286025).

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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 9
SECTION D. SITE GEOLOGY AND HYDROGEOLOGY According to the Geologic Map of North Carolina, dated 1985, the site is underlain by Proterozoic
to Cambrian metamorphosed granitic rocks. During the installation of SVE-1, augur refusal was reached at 38 ft bgs on bedrock. SVE-2 and SVE-3 were installed to depths of 45 ft bgs without encountering bedrock. Bedrock was not encountered within 30.4 feet of the ground surface during installation of monitoring well MW-13. During prior assessment activities performed by others, bedrock was encountered the installation of monitoring wells MW-2 and MW-3 at depths
of 55 feet and 65 feet below ground surface, respectively. Monitoring well MW-2 was installed in unconsolidated material to the top of bedrock, but MW-3 was installed approximately 10 feet into bedrock [Cross-section A-A’, Groundwater Investigation, Engineering Tectonics, P.A. (July 1988)].
Based on the Soil Survey of Surry County, North Carolina, soils on the property are classified as Urban land (Ur). Urban land is described as altered by cutting, filling, grading and shaping so that the original topography and drainage have been changed. Subsurface soil characterized during installation of monitoring wells MW-2 through MW-9 by others consisted of silt, sandy silt and silty fine sand overlying weathered rock. Subsurface soil characterized during installation of
monitoring well MW-13 consisted of silty clay and clayey silt, underlain by silt. Groundwater has historically been measured to be approximately 32 to 38 feet below ground surface at the site.

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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 10
SECTION E. GROUNDWATER INVESTIGATION – JULY 2022 On July 6, 2022, WR personnel mobilized to the subject property to perform groundwater sampling activities at the facility in association with TA-04 under NCDEQ Contract # N122019B.
The following paragraphs describe the sampling activities and associated laboratory analytical results. E.1. MONITORING WELL GAUGING AND SAMPLING
WR collected groundwater samples from MW-2, MW-6R, MW-7, MW-9, MW-12, and MW-14
following purging. A car was parked over MW-5, MW-11 was not located, and LNAPL was identified in MW-13; therefore, these wells were not sampled. Groundwater elevations ranged from 26.82 feet below top of casing (BTOC) in MW-9 to 42.27 feet BTOC in monitoring well MW-7. Based on these elevations, groundwater flow direction
appears to be towards the east-northeast. This groundwater flow direction is consistent with historical groundwater flow direction. Monitoring well information is included in Table B-9 and a groundwater contour map is included as Figure 4.
E.2. LABORATORY RESULTS Analytical results for the groundwater samples revealed the following:

• One or more VOC compounds was reported in MW-2, MW-6R, MW-7, MW-12, and MW-14 at concentrations that exceeded their respective 2L Standards.
o Tetrachloroethene (PCE), a non-petroleum related compound, was reported in MW-12 at a
concentration that exceeded the 2L Standard.
• Benzene was reported in MW-6R and MW-14 at concentrations that exceeded the GCL.
• EDB was identified in MW-6R at a concentration that exceeded the GCL.
The following changes in total VOCs concentrations were shown between the February 2012 and July 2022 sampling period:
Well ID Total VOCs (µg/L) Change February 2012 July 2022 MW-2* 27,316 2,218 -91.88%
MW-6R 76,330 71,667 -6.11%
MW-7* 19,384 5,148 -73.44% * - MW-2 and MW-7’s screens are submerged

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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 11
The following changes in total VOCs concentrations were observed between the March 2015 and July 2022 sampling period. These changes are shown in the table below:
Well ID Total VOCs (µg/L) Change March 2015 July 2022 MW-12 451.7 3.47 -99.23%
MW-14 46,643 42,624 -8.61%
The following changes in total VOCs concentrations were observed between the December 2021 and the July 2022 sampling period. These changes are shown in the table below:
Well ID Total VOCs (µg/L) Change December 2021 July 2022
MW-2* 4,928 2,218 -54.99%
MW-6R 66,076 71,667 +8.46%
MW-7* 9,447 5,148 -45.50%
MW-12 92.38 3.47 -96.24%
MW-14 70,876 42,624 -39.86%
* - MW-2 and MW-7’s screens are submerged
These results are included in Table B-4, while the laboratory report is included in Appendix A. Groundwater quality data is illustrated on Figures 5, 6, and 7. Field notes and site photographs are included in Appendix B. Standard Operating Procedures are included in Appendix C.

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Needham Service Station WR Project # 02172214.50 Monitoring Report August 2022 12
SECTION F. CONCLUSIONS & RECOMMENDATIONS This report documents the results of field activities conducted at the site for TA-04, which included
the sampling of site monitoring wells. Conclusions based on observations, analytical data and research relating to the release at the site combined with historical information include the following:
• Municipal water is available to the local area.
• Two active water supply wells have historically been identified between 1,000-feet and 1,500-feet from the subject property.
• No active water supply wells are reported to be located within 1,000-feet of the subject property.
• One intermittent tributary is located within 1,000-feet of the subject property.
• No wellhead protection areas are located within 1,500 ft of the site.
• Three SVE wells were installed in December 2021 within the former UST basin.
• LNAPL was measured at a thickness of 0.07 feet in MW-13.
• GCL exceedances were reported in MW-6R and MW-14.
• NCAC 2L exceedances were reported in MW-2, MW-6R, MW-7, MW-9, MW-12, and MW-
14.
• Current and historical total VOC concentrations indicate a significant source remains in the area of the former UST basin.
Based on the results of assessment and monitoring activities conducted at the site in association
with this TA, WR recommends the following if funding levels are sufficient:
• Complete a receptor survey update to gather information on the current use of water supply
wells within 1,500 feet of the subject property.
• Replace monitoring wells MW-2 and MW-7 due to the submerged well screens.
• Install one Type II monitoring well to the northwest of monitoring well MW-7 to delineate
contaminants of concern.
• Semi-annual air sparge enhanced MMPEs.
• Continue semi-annual monitoring of site monitoring wells.

WR appreciates the opportunity to be of service in the completion of these assessment activities. Should you have questions, comments, or require additional information, please contact WR at your earliest convenience.

FIGURES

KBB
FD
DRAWN BY:
07/29/2022 02172214.50
1
SUBJECT SITE
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
NEEDHAM SERVICE STATION (#3510)
719 EAST MAIN STREETPILOT MOUNTAIN, SURRY COUNTY, NC
GENERAL LOCATION MAP
1"=500 '
GRAPHIC SCALE
1 inch = 500 ft.
0 500250 1000
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.com
MW-11MW-9MW-8MW-5MW-10MW-3MW-2MW-6RMW-1RMW-12HURSTGARAGEFORMERNEEDHAM'SSERVICE STATIONE 52 BYPASSMAIN STREETMW-14MW-13MW-7KBBFDDRAWN BY:07/29/202202172214.502SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:NEEDHAM SERVICE STATIONNCDEQ INC. # 3510719 EAST MAIN STREETPILOT MOUNTAIN, SURRY COUNTY, NCSITE MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com1"=60 'GRAPHIC SCALE1 inch = 60 ft.06030120LEGENDTYPE II MONITORING WELL LOCATIONSVE WELL LOCATIONNOTES: 1.) AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.
500 FEET
1,000 FEET
WSW-4(INACTIVE)
WSW-2(INACTIVE)
WSW-1(ACTIVE)
WSW-3(ACTIVE)
INCIDENT # 44634
INCIDENT # 44580
GRASSY KNOB RD
E
5
2

B
Y
P
EAST MAIN ST NC 268 EINCIDENT # 47898 FDFDDRAWN BY:07/29/202202172214.503SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:RECEPTOR MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.com1"=200 'GRAPHIC SCALE
1 inch = 200 ft.
0 200100 400
LEGEND
WATER SUPPLY WELL LOCATION
NOTES: 1.) AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.NEEDHAM SERVICE STATIONNCDEQ INC. #3510719 EAST MAIN STREETPILOT MOUNTAIN, SURRY COUNTY, NCKBB
MW-11MW-9MW-8MW-5MW-10MW-3MW-2MW-6RMW-1RMW-12HURSTGARAGEFORMERNEEDHAM'SSERVICE STATIONE 52 BYPASSMAIN STREETMW-14MW-13MW-7(61.38)(59.93)(NM)(NM)(NM)(61.28)(61.26)(61.86)(NM)(63.60)(NM)(52.58)(NM)545556575859606162636362616059585756555453531"=60 'GRAPHIC SCALE1 inch = 60 ft.06030120LEGENDTYPE II MONITORING WELL LOCATIONGROUNDWATER ELEVATION (FT)IMPLIED GROUNDWATER ELEVATIONINFERRED GROUNDWATER FLOWNOTES: 1.) AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.KBBFDDRAWN BY:07/29/202202172214.504SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:NEEDHAM SERVICE STATIONNCDEQ INC.# 3510719 EAST MAIN STREETPILOT MOUNTAIN, SURRY COUNTY, NCHYDRAULIC GRADIENT MAP (ft)JULY 2022WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com61.8662
MW-11MW-9MW-8MW-5MW-10MW-3MW-2MW-6RMW-1RMW-12HURSTGARAGEFORMERNEEDHAM'SSERVICE STATIONE 52 BYPASSMAIN STREETMW-14MW-13MW-71"=60 'GRAPHIC SCALE1 inch = 60 ft.06030120KBBFDDRAWN BY:07/29/202202172214.505SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:NEEDHAM SERVICE STATIONNCDEQ INC. #3510719 EAST MAIN STREETPILOT MOUNTAIN, SURRY COUNTY, NCGROUNDWATER ANALYTICALRESULTS MAPJULY 2022WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.comLEGENDTYPE II MONITORING WELL LOCATIONSVE WELL LOCATIONNOTES: 1.) AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.
MW-11MW-9MW-8MW-5MW-10MW-3MW-2MW-6RMW-1RMW-12HURSTGARAGEFORMERNEEDHAM'SSERVICE STATIONE 52 BYPASSMAIN STREETMW-14MW-13MW-7(NS)(12,900)(559)(6,400)(LNAPL)(<0.5)(NS)(NS)(NS)(3,260)(NS)(2.23)(NS)1.0
1.0
1.0
1.
0
5,000
5,0
0
05,0001"=60 'GRAPHIC SCALE1 inch = 60 ft.06030120LEGENDTYPE II MONITORING WELL LOCATIONBENZENE CONCENTRATION (BLACK, UNDERLINEDVALUES EXCEED GCL)IMPLIED BENZENE CONCENTRATIONESTIMATED EXTENT OF BENZENE CONTAMINATIONAT CONCENTRATIONS EXCEEDING 2L STANDARDESTIMATED EXTENT OF BENZENE CONTAMINATIONAT CONCENTRATIONS EXCEEDING GCLNOTES: 1.) 2017 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.KBBFDDRAWN BY:07/29/202202172214.506SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:NEEDHAM SERVICE STATIONNCDEQ INC. #3510719 EAST MAIN STREETPILOT MOUNTAIN, SURRY COUNTY, NCBENZENEISOCONCENTRATION MAP (ug/L)JULY 2022WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com(559)1.0
MW-11MW-9MW-8MW-5MW-10MW-3MW-2MW-6RMW-1RMW-12HURSTGARAGEFORMERNEEDHAM'SSERVICE STATIONE 52 BYPASSMAIN STREETMW-14MW-13MW-7(NS)(51.2)(NS)(<0.5)(<50)(NS)(NS)(<0.5)(NS)(<50)(LNAPL)(1.14)(NS)0.02
0.0
20.0250501"=60 'GRAPHIC SCALE1 inch = 60 ft.06030120KBBFDDRAWN BY:07/29/202202172214.507SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:NEEDHAM SERVICE STATION NCDEQ INC. #3510719 EAST MAIN STREETPILOT MOUNTAIN, SURRY COUNTY, NCEDB ISOCONCENTRATION MAP JULY 2022WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.comLEGENDTYPE II MONITORING WELL LOCATIONEDB CONCENTRATION (BLACK, UNDERLINEDVALUES EXCEED GCL)IMPLIED EDB CONCENTRATIONESTIMATED EXTENT OF EDB CONTAMINATIONAT CONCENTRATIONS EXCEEDING 2L STANDARDESTIMATED EXTENT OF EDB CONTAMINATIONAT CONCENTRATIONS EXCEEDING GCLNOTES: 1.) 2017 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.(1.14)0.02

TABLES

UST IDNumberCurrent/LastContentsPreviousContentsCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofUSTWas release associated with UST System? (Y/N)1 Gasoline Unknown 4,000 Unknown 5 x 28UnknownUnkClosed by Removal (October 22, 1991)Y2 Gasoline Unknown 4,000 Unknown 5 x 28 Unknown UnkClosed by Removal (October 22, 1991)Y3 Gasoline Unknown 4,000 Unknown 5 x 28 Unknown UnkClosed by Removal (October 22, 1991)YAST IDNumberCurrent/LastContentsPreviousContentsCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofASTWas release associated with AST System? (Y/N)N/AN/AN/A N/A N/AN/AN/AN/AN/AN/AIncidentNumberMaterialReleasedDateofRelease3510 Gasoline UnknownNotes:1.) WR is not aware of any ASTs associated with the subject site.Table B-1Site History: UST/AST System & Other Release InformationNeedham Service StationA release due to a leaking elbow joint in the product pipeline was reported to the Surry County Fire Marshall. Following removal of the tanks, analysis of two soil samples collected from the base of the excavation by Method 5030 resulted in total petroleum hydrocarbon concentrations of 68 parts per million (ppm) and 350 ppm. Free product was reported in a monitor well installed near the tank basin. (UST Closure Report identified Facility ID No. as 0-008960)719 East Main StreetPilot Mountain, Surry County, North CarolinaDescription of ReleaseIncident # 3510Page 1 of 1
Calculated
AcetoneBenzenen-Butylbenzenesec-ButylbenzeneChloroformChloromethane1,2-Dibromoethane (EDB)1,2-Dichloroethane1,2-DichloropropaneEthylbenzeneHexanone, 2-MEK (2-Butanone )Methylene Chloride Methyl tert-butyl etherMIBK (4-Methyl-2-pentanone) Naphthalenen-PropylbenzeneStyreneTetrachloroetheneTolueneTrichloroethene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTotal Xylene 67-64-1 71-43-2 104-51-8 135-98-8 67-66-3 74-87-3 106-93-4 107-06-2 78-87-5 100-41-4 108-20-3 98-82-8 99-87-6 591-78-6 78-93-3 75-09-2 1634-04-4 108-10-1 91-20-3 103-65-1 100-42-5 127-18-4 108-88-3 79-01-6 95-63-6 108-67-8 NA
2/22/2012 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.2 BDL BDL BDL BDL 23 BDL 0.27 BDL BDL BDL
9/19/2012 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.68 BDL BDL BDL BDL 31 BDL BDL BDL BDL BDL
7/24/2019 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 0.14 BDL BDL BDL BDL
8/20/2020
4/23/2021
7/6/2022
2/23/2012 1000 7,400 BDL BDL BDL BDL BDL BDL BDL 900 190 86 BDL 200 650 BDL 1,400 100 270 120 BDL BDL 8,600 BDL 960 340 5,100
9/19/2012 2400 18,000 53 14 BDL BDL 140 150 BDL 3,000 400 99 7.4 490 560 BDL 2,500 190 830 310 36 BDL 27,000 BDL 2,800 590 17,000
3/13/2015 NA 740 BDL BDL BDL BDL 7.1 5 BDL 66.9 18.7 2.6 NA NA NA BDL 119 NA 14.4 6.6 0.95 BDL 645 BDL 58.5 16.9 311
7/24/2019 74 47 3.5 0.74 0.17 BDL BDL BDL BDL 21 0.49 2.8 0.59 BDL BDL BDL 2.9 <5.0 12 7.1 BDL BDL 24 BDL 50 15 90
8/20/2020 6.8 67 NA NA NA NA 0.027 NA BDL 17 0.6 1.4 NA NA NA NA 3.1 NA 4.5 3.5 NA NA 23 NA 22 6.2 72
4/23/2021 <100 586 <5.00 <5.00 <5.00 <5.00 <5.00 <5.00 <5.00 176 7.23 16.1 <5.00 <10.0 <50.0 <20.0 39.2 13.5 60.0 37.5 <5.00 <5.00 219 <5.00 284 77.9 688
12/2/2021 <100 953 5.13 <5.00 <5.00 <5.00 <5.00 <5.00 <5.00 264 10.40 22.0 <5.00 <10.0 <50.0 <20.0 43.8 14.4 106.0 51.2 <5.00 <5.00 794 <5.00 365 97.8 1,100
7/6/2022 <10.0 559 0.952 0.847 <0.500 <0.500 1.14 <0.500 0.881 93.9 5.04 6.3 <0.500 6.87 8.28 <2.00 13.5 6.1 32.4 15.0 0.975 <0.500 396 <0.500 105 30.0 468
2/23/2012 BDL 0.29 BDL BDL 4.2 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
9/19/2012 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
8/20/2020
4/23/2021
7/6/2022
2/22/2012 BDL 83 12 6.7 BDL 0.32 BDL 3 BDL BDL 10 16 6.2 BDL BDL BDL 170 NA 58 4.9 BDL BDL BDL BDL 11 7.7 BDL
9/19/2012 BDL 44 15 5.8 BDL BDL BDL BDL BDL BDL 6 19 BDL BDL BDL BDL 75 BDL 77 5.8 BDL BDL BDL BDL 11 5.1 BDL
7/24/2019 BDL 63 18 5.4 BDL BDL BDL BDL BDL 0.56 BDL 15 BDL BDL BDL BDL 35 BDL 53 5.4 BDL BDL 1 BDL BDL BDL BDL
4/23/2021 <10.0 97.3 13.0 11.2 <0.500 <0.500 <0.500 3.54 <0.500 1.53 12.5 55.5 1.62 <1.00 <5.00 <2.00 106 <1.00 52.4 3.70 <0.500 <0.500 1.84 <0.500 <0.500 <0.500 <0.500
12/2/2021 <10.0 21.6 12.3 9.8 <0.500 <0.500 <0.500 1.70 <0.500 1.45 5.3 45.6 1.96 <1.00 <5.00 <2.00 53.2 19.6 62.8 4.78 <0.500 <0.500 1.51 <0.500 <0.500 <0.500 2.21
7/6/2022
2/22/2012 BDL 19,000 140 BDL BDL BDL 310 BDL BDL 2,700 120 190 BDL 290 BDL BDL 120 130 710 BDL BDL BDL 37,000 BDL 2,000 620 13,000
9/19/2012 1,400 19,000 82 30 BDL BDL 210 140 BDL 3,400 280 140 BDL 490 420 BDL 280 200 970 BDL 48 BDL 27,000 BDL 3,100 750 19,000
11/13/2017 BDL 16,000 72 19 BDL BDL 210 BDL BDL 3,400 74 120 BDL BDL 240 BDL 74 BDL 730 BDL BDL BDL 32,000 BDL 2,700 BDL 19,000
7/24/2019 140 9,700 65 16 7.2 BDL 11 BDL BDL 1,900 59 99 8.8 96 110 BDL 59 100 600 8.80 BDL BDL 1,000 BDL 1,700 470 9,000
8/20/2020 NA 14,000 NA NA NA NA 28 BDL BDL 3,400 NA 140 NA NA NA NA NA NA 700 NA NA NA 18,000 BDL 2,500 650 17,400
4/23/2021 <1000 14,400 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 3,230 51.7 138 <50.0 <100 <500 <200 182 <100 903 369 <50.0 <50.0 22,100 <50.0 2,480 622 16,300
12/2/2021 127 12,100 27.2 18.4 <5.00 <5.00 33.9 <5.00 24 3,000 40.4 139 7.75 83.7 113 <20.0 154 94 727 383 33 <5.00 15,500 <5.00 2,270 641 15,300
7/6/2022 <1000 12,900 <50.0 <50.0 <50.0 <50.0 51.2 <50.0 <50.0 2,870 <50.0 124 <50.0 <100 <500 <200 <100 <100 780 340 <50.0 <50.0 23,500 <50.0 2,200 552 14,200
2/22/2012 BDL 10,000 88 BDL BDL BDL BDL 56 BDL 1,300 60 140 BDL BDL BDL BDL 480 150 650 180 BDL BDL 400 BDL 650 230 5,000
9/19/2012 BDL 6,300 33 BDL BDL BDL BDL BDL BDL 2,500 34 120 BDL BDL BDL BDL 180 130 850 320 29 BDL 500 BDL 1,500 310 9,600
3/13/2015 BDL 6,430 BDL 5.9 BDL BDL BDL 17.2 11.9 1,190 21.9 51.5 BDL BDL BDL 50.4 91.2 BDL 411 120 9.5 BDL 326 BDL 410 782 3,200
11/13/2017 BDL 2,800 23 9.5 BDL BDL BDL BDL BDL 1,000 BDL 86 BDL BDL BDL BDL 93 94 550 130 BDL BDL 220 BDL 19 BDL 658
7/24/2019 BDL 930 BDL BDL BDL BDL 0.054 BDL BDL 49 BDL 77 BDL BDL BDL BDL 79 120 350 19 BDL BDL 6 BDL BDL BDL BDL
8/20/2020 BDL 2,300 23 12 BDL BDL 0.14 BDL 5.2 450 8.0 100 6.1 BDL BDL NA 61 130 440 97 10 BDL 21 BDL 0.72 0.81 NA
4/23/2021 <100 1,940 21.9 14.4 <5.00 <5.00 <5.00 <5.00 5.07 274 6.54 108 7.43 <10.0 <50.0 <20.0 51.7 153 548 71.9 6.54 <5.00 18.6 <5.00 <5.00 <5.00 24.2
12/2/2021 <100 5,040 23.1 13.2 <5.00 <5.00 <5.00 <5.00 9.87 1,660 7.30 115 7.12 <10.0 <50.0 <20.0 <10.0 189 785 185.0 18.80 <5.00 141.0 <5.00 10.1 16.3 613.0
7/6/2022 <1000 3,260 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0 874 <50.0 90.3 <50.0 <100 <500 <200 <100 121 448 147.0 <50.0 <50.0 84.7 <50.0 <50.0 <50.0 61.6
2/22/2012 BDL 840 12 9.2 BDL BDL BDL 28 5 26 21 28 BDL BDL BDL BDL 220 BDL 16 9.8 BDL BDL BDL BDL BDL BDL BDL
9/19/2012 BDL 500 6 4 BDL BDL BDL 21 3.6 12 14 24 BDL BDL BDL BDL 180 BDL 4 4 BDL BDL BDL BDL BDL BDL BDL
4/23/2021 <10.0 7.40 1.90 3.10 <0.500 <0.500 <0.500 0.746 <0.500 0.521 1.77 12.1 <0.500 <1.00 <5.00 <2.00 20.0 <1.00 <1.00 <0.500 <0.500 0.868 0.784 <0.500 <0.500 <0.500 <0.500
7/6/2022
2/22/2012 BDL 240 1.9 1.9 BDL BDL BDL 27 1.4 BDL 16 8.4 BDL BDL BDL BDL 220 BDL 7.2 BDL BDL BDL BDL BDL BDL BDL BDL
9/19/2012 BDL 34 4.4 BDL BDL BDL BDL 6.7 BDL BDL 3.3 BDL BDL BDL BDL BDL 51 BDL 1.6 BDL BDL BDL BDL BDL BDL BDL BDL
3/13/2015 BDL 16.8 BDL BDL BDL BDL BDL 11.1 0.55 BDL 5.5 0.82 BDL BDL BDL BDL 78.1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
11/13/2017 BDL 23 BDL BDL BDL BDL BDL 5.5 1.1 BDL 3.5 0.82 BDL BDL BDL BDL 46 BDL 2.7 BDL BDL BDL BDL BDL BDL BDL 0.19
7/24/2019 BDL 6.8 0.24 0.25 BDL BDL BDL BDL 0.69 BDL 1.7 0.29 BDL BDL BDL BDL 24 BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.27
8/20/2020 BDL 5.3 NA BDL BDL BDL BDL 1.9 BDL BDL 1.5 0.49 BDL BDL BDL BDL 21 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
4/23/2021
12/2/2021 <10.0 0.722 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 0.512 <0.500 <0.500 <0.500 <1.00 <5.00 <2.00 1.27 <1.00 2 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500
7/6/2022 <10.0 2.23 <0.500 <0.500 <0.500 <0.500 <0.500 1.12 <0.500 <0.500 0.902 <0.500 <0.500 <1.00 <5.00 <2.00 12.7 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500
TABLE B-4
SUMMARY OF GROUNDWATER ANALYTICAL RESULTS
Needham Service Station
Incident # 3510
719 East Main Street
MW-1R
Not Sampled
Pilot Mountain, Surry County, North Carolina
VOCs by SM6200BAnalytical Method
Not Sampled
Not Sampled
MW-5
Not Sampled - Vehicle parked over monitoring well
Sample
ID
Date
Collected
Not Found
Not Sampled
Not Sampled
Not Sampled
Not Sampled
MW-3
MW-2
MW-9
MW-8
MW-7
MW-6R
Page 1 of 2
Calculated
AcetoneBenzenen-Butylbenzenesec-ButylbenzeneChloroformChloromethane1,2-Dibromoethane (EDB)1,2-Dichloroethane1,2-DichloropropaneEthylbenzeneHexanone, 2-MEK (2-Butanone )Methylene Chloride Methyl tert-butyl etherMIBK (4-Methyl-2-pentanone) Naphthalenen-PropylbenzeneStyreneTetrachloroetheneTolueneTrichloroethene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTotal Xylene 67-64-1 71-43-2 104-51-8 135-98-8 67-66-3 74-87-3 106-93-4 107-06-2 78-87-5 100-41-4 108-20-3 98-82-8 99-87-6 591-78-6 78-93-3 75-09-2 1634-04-4 108-10-1 91-20-3 103-65-1 100-42-5 127-18-4 108-88-3 79-01-6 95-63-6 108-67-8 NA
TABLE B-4
SUMMARY OF GROUNDWATER ANALYTICAL RESULTS
Needham Service Station
Incident # 3510
719 East Main Street
Pilot Mountain, Surry County, North Carolina
VOCs by SM6200BAnalytical Method
Sample
ID
Date
Collected
2/22/2012 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
9/19/2012 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
7/24/2019 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
4/23/2021
7/6/2022
2/22/2012 BDL 56 0.85 0.8 BDL BDL 2.7 4.7 0.51 BDL 2.4 1.1 BDL BDL BDL BDL 23 BDL 12 BDL BDL 2.7 BDL 0.65 0.52 BDL 1.6
9/19/2012 15 70 0.81 0.75 BDL BDL 2.9 8.8 BDL BDL 2.8 BDL BDL BDL BDL BDL 22 BDL 12 BDL BDL 2.9 BDL 0.53 BDL BDL 1.2
4/23/2021
7/6/2022
3/13/2015 BDL 6.1 2.5 BDL 9.1 BDL BDL 0.44 BDL BDL 0.57 3.6 BDL BDL BDL BDL 4 BDL 2.4 14.1 BDL BDL 52.8 BDL 75.5 30.4 250.2
11/13/2017 BDL 0.61 BDL BDL 3.2 BDL 2.4 BDL BDL BDL 3.1 BDL BDL BDL BDL BDL 4.8 BDL BDL BDL BDL 2.4 0.22 BDL BDL 0.3 0.59
7/24/2019 BDL BDL BDL BDL 3.3 BDL 2.7 BDL BDL BDL 0.89 BDL BDL BDL BDL BDL 7.5 BDL BDL BDL BDL 2.7 0.17 BDL BDL 0.3 0.33
8/20/2020 BDL BDL BDL BDL 2.6 BDL 2.4 0.077 BDL BDL 0.84 BDL BDL BDL BDL BDL 5.6 BDL BDL BDL BDL 2.4 BDL BDL 0.54 1.6 BDL
4/23/2021 <10.0 <0.500 <0.500 <0.500 2.60 <0.500 <0.500 <0.500 <0.500 <0.500 0.847 <0.500 <0.500 <1.00 <5.00 <2.00 4.06 <1.00 <1.00 <0.500 <0.500 2.07 <0.500 <0.500 <0.500 3.14 <0.500
12/2/2021 <10.0 <0.500 0.641 <0.500 0.87 <0.500 <0.500 <0.500 <0.500 2.17 <0.500 <0.500 <0.500 <1.00 <5.00 <2.00 3.36 <1.00 19.4 1.61 <0.500 2.84 1.72 <0.500 19.5 6.67 16.8
7/6/2022 <10.0 <0.500 <0.500 <0.500 1.82 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <2.00 <1.00 <1.00 <1.00 <0.500 <0.500 1.65 <0.500 <0.500 <0.500 <0.500 <0.500
3/13/2015
11/15/2017
7/24/2019
8/20/2020
4/23/2021
12/2/2021
7/6/2022
3/13/2015 BDL 9,780 BDL BDL BDL BDL 85.5 41.9 BDL 2,470 82.5 116 BDL BDL BDL 354 2,170 BDL 630 BDL BDL BDL 15,200 BDL 2,090 553 13,070
11/15/2017 3,100 900 79 BDL BDL BDL 110 BDL BDL 2,700 110 120 BDL 1100 1,100 BDL 2,100 200 630 BDL BDL BDL 15,000 BDL 2,700 620 16,100
7/24/2019 2,400 9,500 85 BDL BDL BDL 130 BDL BDL 1,800 160 130 BDL 680 880 BDL 1,700 280 700 BDL BDL BDL 15,000 BDL 2,200 510 10,000
8/20/2020 4,800 12,000 110 BDL BDL BDL 130 BDL BDL 2,600 180 180 BDL 840 1,700 BDL 2,600 BDL 1,500 BDL BDL BDL 19,000 BDL 2,300 550 13,200
4/23/2021 4,470 17,900 <50.0 <50.0 <50.0 <50.0 136 114 <50.0 2,740 332 152 <50.0 971 1,220 <200 2,960 489 659 353 <50.0 <50.0 26,700 <50.0 2,160 518 14,200
12/2/2021 3,450 12,500 <50.0 <50.0 <50.0 <50.0 96.4 101 <50.0 2,550 263 154 <50.0 917 1,380 <200 2,080 564 652 372 <50.0 <50.0 18,400 <50.0 1,930 447 12,500
7/6/2022 2,490 6,400 64.9 <50.0 <50.0 <50.0 <50.0 86.9 <50.0 1,880 137 160 <50.0 634 <500 <200 867 299 636 371 <50.0 <50.0 9,390 <50.0 1,860 509 8,420
11/20/2008
1/15/2010 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL
SVE-1 12/2/2021
SVE-2 12/2/2021 8,310 24,200 <50.0 <50.0 <50.0 <50.0 105 164 <50.0 4,000 313 149 <50.0 1,690 5,870 <200 4,890 391 1,780 441 <50.0 <50.0 49,400 <50.0 3,240 834 17,100
SVE-3 12/2/2021 5,210 18,100 54.4 <50.0 <50.0 <50.0 58.2 111 <50.0 3,240 280 131 <50.0 1,020 3,270 <200 3,540 368 1,450 387 <50.0 <50.0 40,000 <50.0 2,670 703 15,700
6000 1 70 70 70 3 0.02 0.4 0.6 600 70 70 25 40 4000 400 20 100 6 70 70 0.7 600 3 400 400 500
6,000,000 5,000 5,900 8,800 70,000 3,000 50 400 600 80,000 70,000 30,500 11,700 40,000 4,000,000 400,000 20,000 100,000 6,000 26,100 70,000 700 260,000 3,000 28,500 24,100 50,000
Notes:
1)All results provided in ug/L (micrograms per liter) or parts per billion.
2)Compounds analyzed for by laboratory but not listed were not detected above laboratory detection limits. See the laboratory report included in the Appendix for a full list of constituents.
3)NC 2L Standard - North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.
4)GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater.
NL = No Regulatory Limit Established
NA = Not Analyzed
NR = Compound Not Reported By Previous Consultants or Laboratory
BDL = Below Laboratory Detection Limit
Result = Result Exceeds Laboratory Detection Limits
Result = Result Exceeds 2L Standard
Result = Result Exceeds GCL Value
LNAPL - Not Sampled
LNAPL - Not Sampled
Not Sampled
Not Sampled
MW-12
MW-11 Not Sampled
Not Sampled
GCLs for Groundwater
LNAPL - Not Sampled
LNAPL - Not Sampled
NC 2L Standard
Dry - Not Sampled
MW-14
MW-13
WSW-1 Not Sampled
LNAPL - Not Sampled
LNAPL - Not Sampled
LNAPL - Not Sampled
MW-10
Page 2 of 2
WSW-1 5976-00-32-2153 212 NC 268
Pilot Mountain, NC Surry Donald Corns 212 NC 268
Pilot Mountain, NC Drinking Unk Unk 1300 Downgradient
WSW-2 5976-18-21-6741 733 E 52 Bypass
Pilot Mountain, NC Surry J & E Properties of NC, LLC 1656 Park Dr
Mount Airy, NC 27030 Inactive Unk Unk 530 Cross-gradient
WSW-3 5976-18-30-1584 1025 Grassy Knob Rd
Pilot Mountain, NC Surry Jeffery Lawson 1039 Brims Grove Rd
Pinnacle, NC 27043-8534 Drinking Unk Unk 1400 Upgradient
WSW-4 5976-17-10-6949 702 E Main St
Pilot Mountain, NC Surry Edith Sheets PO Box 124Pilot Mountain, NC 27041-
0124
Inactive Unk Unk 470 Upgradient
Notes:
1)
2)3)
County Property Owner
Pilot Mountain, Surry County, North Carolina
TABLE B-5A
PUBLIC & PRIVATE WATER SUPPLY WELL INFORMATION
Needham Service StationIncident # 3510
719 East Main Street
Receptor Survey Performed by Others.
Well Use Well Depth
(feet)
Well
Screen
Well Distance
from Source Area
Location Relative
to Groundwater Property Owner Address
Note: Municipal water provide is provided to the local area.
Well location addresses and property owner information was obtained from the Surry County GIS Department.
Information regarding the water supply well's use and location was obtained through field observations and aerial mapping. Select well locations are estimated based on mapping.
Well ID Pin
Number Property Address
Page 1 of 1
Well ID Date Installed Date Water Level Measured
Well Casing Diameter (in)
Screened
Interval
(feet)
Top-of-Casing Elevation (feet)
Depth-to-Product(feet)Depth-to-Water(feet)
Free Product Thickness(feet)
Groundwater SurfaceElevation
(feet)
2/22/2012 --36.52 --63.48
9/19/2012 --36.42 --63.58
3/13/2015 --36.59 --63.41
7/24/2019 --34.60 --65.40
8/20/2020 --32.81 --67.19
4/21/2021 --Not Gauged --Not Gauged
12/2/2021 --Not Gauged --Not Gauged
7/6/2022 --Not Gauged --Not Gauged
2/22/2012 --39.87 --60.97
9/19/2012 --37.97 --62.87
3/13/2015 --39.45 --61.39
7/24/2019 --37.24 --63.60
8/20/2020 --36.66 --64.18
4/21/2021 --35.95 --64.89
12/2/2021 --37.78 --63.06
7/6/2022 --39.56 --61.28
2/22/2012 --12.81 --88.03
9/19/2012 --27.58 --73.26
3/13/2015 --25.63 --75.21
7/24/2019 --Not Gauged --Not Gauged
8/20/2020 --18.40 --82.44
4/21/2021 --Not Gauged --Not Gauged
12/2/2021 --Not Gauged --Not Gauged
7/6/2022 --Not Gauged --Not Gauged
2/22/2012 --37.87 --60.19
9/19/2012 --38.09 --59.97
3/13/2015 --25.63 --72.43
7/24/2019 --36.09 --61.97
8/20/2020 --Not Gauged --Not Gauged
4/21/2021 --Not Gauged --Not Gauged
12/2/2021 --36.42 --61.64
7/6/2022 --Not Gauged --Not Gauged
2/22/2012 --40.21 --61.15
9/19/2012 --40.53 --60.83
3/13/2015 --40.18 --61.18
7/24/2019 --37.85 --63.51
8/20/2020 --37.31 --64.05
4/21/2021 --36.55 --64.81
12/2/2021 --38.40 --62.96
7/6/2022 --39.98 --61.38
2/22/2012 --42.18 --60.02
9/19/2012 --42.50 --59.70
3/13/2015 --42.14 --60.06
7/24/2019 --40.02 --62.18
8/20/2020 --39.44 --62.76
4/21/2021 --38.36 --63.84
12/2/2021 --41.80 --60.40
7/6/2022 --42.27 --59.93
TABLE B-9
CURRENT & HISTORICAL GROUNDWATER ELEVATIONS & FREE PRODUCT THICKNESS
Needham Service Station
719 East Main StreetPilot Mountain, Surry County, North Carolina
Incident # 3510
2 35 - 50 100.001/17/2005MW-1R
4 44.5 - 54.5 100.84MW-2 11/11/1987
MW-3 11/11/1987 2 36.5 - 54 100.32
MW-5 1988 2 41.5 - 51.5 98.06
MW-6R 8/1/2004 2 35 - 50 101.36
MW-7 1988 44 - 542 102.20
Page 1 of 3
Well ID Date Installed Date Water Level Measured
Well Casing Diameter (in)
Screened
Interval
(feet)
Top-of-Casing Elevation (feet)
Depth-to-Product(feet)Depth-to-Water(feet)
Free Product Thickness(feet)
Groundwater SurfaceElevation
(feet)
TABLE B-9
CURRENT & HISTORICAL GROUNDWATER ELEVATIONS & FREE PRODUCT THICKNESS
Needham Service Station
719 East Main StreetPilot Mountain, Surry County, North Carolina
Incident # 3510
2/22/2012 --41.99 --59.29
9/19/2012 --42.55 --58.73
3/13/2015 --Not Gauged --Not Gauged
7/24/2019 --Not Gauged --Not Gauged
8/20/2020 --Not Gauged --Not Gauged
4/21/2021 --38.00 --63.28
12/2/2021 --Not Gauged --Not Gauged
7/6/2022 --Not Gauged --Not Gauged
2/22/2012 --26.25 --53.15
9/19/2012 --27.22 --52.18
3/13/2015 --26.37 --53.03
7/24/2019 --25.20 --54.20
8/20/2020 --31.30 --48.10
4/21/2021 --Not Found --Not Found
12/2/2021 --26.05 --53.35
7/6/2022 --26.82 --52.58
2/22/2012 --38.74 --40.66
9/19/2012 --38.70 --40.70
3/13/2015 --Not Gauged --Not Gauged
7/24/2019 --36.32 --43.08
8/20/2020 --Not Gauged --Not Gauged
4/21/2021 --Not Gauged --Not Gauged
12/2/2021 --Not Gauged --Not Gauged
7/6/2022 --Not Gauged --Not Gauged
2/22/2012 --38.74 --40.66
9/19/2012 --38.70 --40.70
3/13/2015 --Not Gauged --Not Gauged
7/24/2019 --36.32 --43.08
8/20/2020 --Not Gauged --Not Gauged
4/21/2021 --Not Gauged --Not Gauged
12/2/2021 --Not Gauged --Not Gauged
7/6/2022 --Not Gauged --Not Gauged
3/13/2015 --36.54 --63.54
7/24/2019 --34.40 --65.68
8/20/2020 --33.58 --66.50
4/21/2021 --33.50 --66.58
12/2/2021 --34.78 --65.30
7/6/2022 --36.48 --63.60
3/13/2015 40.10 40.74 0.64 60.74
7/24/2019 39.22 39.24 0.02 61.77
8/20/2020 37.70 38.70 1.00 63.05
4/21/2021 35.90 35.9 0.00 65.10
12/2/2021 37.69 39.02 1.33 62.98
7/6/2022 39.72 39.79 0.07 61.26
3/13/2015 --38.78 --62.01
7/24/2019 --36.74 --64.05
8/20/2020 --36.08 --64.71
4/21/2021 --35.46 --65.33
12/2/2021 --37.06 --63.73
7/6/2022 --38.93 --61.86
MW-8 1988 2 42 - 52 101.28
MW-9 1988 2 Unknown 79.40
MW-10 1/17/2005 2 30 - 45 79.40
MW-11 5/21/2007 2 30 - 45 79.40
MW-12 3/12/2015 2 30 - 45 100.08
MW-13 3/12/2015 2 31 - 46 101.00
2MW-14 31 - 46 100.793/12/2015
Page 2 of 3
Well ID Date Installed Date Water Level Measured
Well Casing Diameter (in)
Screened
Interval
(feet)
Top-of-Casing Elevation (feet)
Depth-to-Product(feet)Depth-to-Water(feet)
Free Product Thickness(feet)
Groundwater SurfaceElevation
(feet)
TABLE B-9
CURRENT & HISTORICAL GROUNDWATER ELEVATIONS & FREE PRODUCT THICKNESS
Needham Service Station
719 East Main StreetPilot Mountain, Surry County, North Carolina
Incident # 3510
SVE-1 12/2/2021 12/2/2021 2 10 - 45 101.00 --DRY --DRY
SVE-2 12/2/2021 12/2/2021 2 10 - 45 100.91 --37.54 --63.37
SVE-3 12/2/2021 12/2/2021 2 10 - 45 100.74 --36.84 --63.90
Notes
2) If NAPL Present, groundwater elevation calcualted by (top of casing - depth to water) + (LNAPL thickness * 0.7498)1) TOC elevation based on arbitrary elevation from January 17, 2005.
Page 3 of 3

APPENDIX A
LABORATORY ANALYTICAL REPORT & CHAIN OF CUSTODY

Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the
analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.

7/18/2022
Withers & Ravenel Matt James
115 Mackenan Dr. BUILDING 117 Cary, NC, 27511
Ref: Analytical Testing
Lab Report Number: 22-189-0043 Client Project Description: Needham Services Station
02172214.50
Dear Matt James:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 7/8/2022 for the analyses presented in the following report.
The above referenced project has been analyzed per your instructions. The analyses were performed in
accordance with the applicable analytical method.
The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all
parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance.
The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-
received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information.
Sincerely,
Angela D Overcash Senior Project Manager
Page 1 of 43
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202237735State ProgramNorth Carolina
12/31/2022402State ProgramNorth Carolina
07/31/202299012State ProgramSouth Carolina
12/31/202299012State ProgramSouth Carolina
Page 1 of 1 00016/22-189-0043
Page 2 of 43
Report Number:
Sample Summary Table
Client Project Description:
22-189-0043
Needham Services Station
02172214.50
Lab No Client Sample ID Matrix Date Collected Date Received
07/06/2022 14:20Aqueous 93842 MW-2 07/08/2022 11:45
07/06/2022 14:55Aqueous 93843 MW-6R 07/08/2022 11:45
07/06/2022 15:30Aqueous 93844 MW-7 07/08/2022 11:45
07/06/2022 16:05Aqueous 93845 MW-9 07/08/2022 11:45
07/06/2022 13:00Aqueous 93846 MW-12 07/08/2022 11:45
07/06/2022 13:30Aqueous 93847 MW-14 07/08/2022 11:45
Page 3 of 43
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
22-189-0043
Report Limit
Project:Needham Services Station
V 93842MW-2
559 07/14/2022 21:186200BBenzeneµg/L 5.00
0.952 07/14/2022 05:506200Bn-Butylbenzene µg/L 0.500
0.847 07/14/2022 05:506200Bsec-Butyl benzene µg/L 0.500
5.04 07/14/2022 05:506200BDi-Isopropyl Ether (DIPE)µg/L 0.500
1.14 07/14/2022 05:506200B1,2-Dibromoethane µg/L 0.500
0.881 07/14/2022 05:506200B1,2-Dichloropropane µg/L 0.500
93.9 07/14/2022 05:506200BEthylbenzeneµg/L 0.500
6.87 07/14/2022 05:506200B2-Hexanone µg/L 1.00
6.32 07/14/2022 05:506200BIsopropylbenzeneµg/L 0.500
8.28 07/14/2022 05:506200BMethyl Ethyl Ketone (MEK)µg/L 5.00
13.5 07/14/2022 05:506200BMethyl tert-butyl ether (MTBE)µg/L 1.00
6.10 07/14/2022 05:506200B4-Methyl-2-Pentanone µg/L 1.00
32.4 07/14/2022 05:506200BNaphthaleneµg/L 1.00
15.0 07/14/2022 05:506200Bn-Propylbenzene µg/L 0.500
0.975 07/14/2022 05:506200BStyreneµg/L 0.500
396 07/14/2022 21:186200BTolueneµg/L 5.00
105 07/14/2022 21:186200B1,2,4-Trimethylbenzene µg/L 5.00
30.0 07/14/2022 05:506200B1,3,5-Trimethylbenzene µg/L 0.500
133 07/14/2022 21:186200Bo-Xylene µg/L 5.00
335 07/14/2022 21:186200Bm,p-Xylene µg/L 10.0
468 07/14/2022 21:186200BXylene (Total)µg/L 5.00
V 93843MW-6R
12900 07/14/2022 21:576200BBenzeneµg/L 500
51.2 07/14/2022 10:596200B1,2-Dibromoethane µg/L 50.0
2870 07/14/2022 10:596200BEthylbenzeneµg/L 50.0
124 07/14/2022 10:596200BIsopropylbenzeneµg/L 50.0
780 07/14/2022 10:596200BNaphthaleneµg/L 100
340 07/14/2022 10:596200Bn-Propylbenzene µg/L 50.0
23500 07/14/2022 21:576200BTolueneµg/L 500
2200 07/14/2022 10:596200B1,2,4-Trimethylbenzene µg/L 50.0
552 07/14/2022 10:596200B1,3,5-Trimethylbenzene µg/L 50.0
4560 07/14/2022 10:596200Bo-Xylene µg/L 50.0
9590 07/14/2022 10:596200Bm,p-Xylene µg/L 100
14200 07/14/2022 10:596200BXylene (Total)µg/L 50.0
V 93844MW-7
3260 07/14/2022 23:156200BBenzeneµg/L 50.0
Page 4 of 43
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
22-189-0043
Report Limit
Project:Needham Services Station
V 93844MW-7
874 07/14/2022 23:156200BEthylbenzeneµg/L 50.0
90.3 07/14/2022 23:156200BIsopropylbenzeneµg/L 50.0
121 07/14/2022 23:156200B4-Methyl-2-Pentanone µg/L 100
448 07/14/2022 23:156200BNaphthaleneµg/L 100
147 07/14/2022 23:156200Bn-Propylbenzene µg/L 50.0
84.7 07/14/2022 23:156200BTolueneµg/L 50.0
61.6 07/14/2022 23:156200Bo-Xylene µg/L 50.0
61.6 07/14/2022 23:156200BXylene (Total)µg/L 50.0
V 93845MW-9
2.23 07/14/2022 18:446200BBenzeneµg/L 0.500
0.902 07/14/2022 18:446200BDi-Isopropyl Ether (DIPE)µg/L 0.500
1.12 07/14/2022 18:446200B1,2-Dichloroethane µg/L 0.500
12.7 07/14/2022 18:446200BMethyl tert-butyl ether (MTBE)µg/L 1.00
V 93846MW-12
1.82 07/14/2022 07:456200BChloroformµg/L 0.500
1.65 07/14/2022 07:456200BTetrachloroetheneµg/L 0.500
V 93847MW-14
2490 07/14/2022 11:376200BAcetoneµg/L 1000
6400 07/14/2022 11:376200BBenzeneµg/L 50.0
64.9 07/14/2022 11:376200Bn-Butylbenzene µg/L 50.0
137 07/14/2022 11:376200BDi-Isopropyl Ether (DIPE)µg/L 50.0
86.9 07/14/2022 11:376200B1,2-Dichloroethane µg/L 50.0
1880 07/14/2022 11:376200BEthylbenzeneµg/L 50.0
634 07/14/2022 11:376200B2-Hexanone µg/L 100
160 07/14/2022 11:376200BIsopropylbenzeneµg/L 50.0
867 07/14/2022 11:376200BMethyl tert-butyl ether (MTBE)µg/L 100
299 07/14/2022 11:376200B4-Methyl-2-Pentanone µg/L 100
636 07/14/2022 11:376200BNaphthaleneµg/L 100
371 07/14/2022 11:376200Bn-Propylbenzene µg/L 50.0
9390 07/14/2022 11:376200BTolueneµg/L 50.0
1860 07/14/2022 11:376200B1,2,4-Trimethylbenzene µg/L 50.0
509 07/14/2022 11:376200B1,3,5-Trimethylbenzene µg/L 50.0
3350 07/14/2022 11:376200Bo-Xylene µg/L 50.0
5070 07/14/2022 11:376200Bm,p-Xylene µg/L 100
8420 07/14/2022 11:376200BXylene (Total)µg/L 50.0
Page 5 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-2
93842 Matrix:
7/6/2022 14:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 07/14/22 05:50 6200BJLB
559 µg/L 5.00Benzene 10 07/14/22 21:18 6200BJLB
<0.500 µg/L 0.500Bromobenzene 1 07/14/22 05:50 6200BJLB
<1.00 µg/L 1.00Bromochloromethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Bromodichloromethane 1 07/14/22 05:50 6200BJLB
<5.00 µg/L 5.00Bromoform 1 07/14/22 05:50 6200BJLB
<1.00 µg/L 1.00Bromomethane 1 07/14/22 05:50 6200BJLB
0.952 µg/L 0.500n-Butylbenzene 1 07/14/22 05:50 6200BJLB
0.847 µg/L 0.500sec-Butyl benzene 1 07/14/22 05:50 6200BJLB
<2.00 µg/L 2.00tert-Butyl benzene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Carbon Tetrachloride 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Chlorobenzene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Chlorodibromomethane 1 07/14/22 05:50 6200BJLB
<1.00 µg/L 1.00Chloroethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Chloroform 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Chloromethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5002-Chlorotoluene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5004-Chlorotoluene 1 07/14/22 05:50 6200BJLB
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 07/14/22 05:50 6200BJLB
1.14 µg/L 0.5001,2-Dibromoethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Dibromomethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 07/14/22 05:50 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 6 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-2
93842 Matrix:
7/6/2022 14:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 07/14/22 05:50 6200BJLB
<5.00 µg/L 5.00Dichlorodifluoromethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,1-Dichloroethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,2-Dichloroethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,1-Dichloroethene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 07/14/22 05:50 6200BJLB
0.881 µg/L 0.5001,2-Dichloropropane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,3-Dichloropropane 1 07/14/22 05:50 6200BJLB
<2.00 µg/L 2.002,2-Dichloropropane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,1-Dichloropropene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 07/14/22 05:50 6200BJLB
<200 µg/L 200Ethanol 1 07/14/22 05:50 6200BJLB
93.9 µg/L 0.500Ethylbenzene 1 07/14/22 05:50 6200BJLB
<3.00 µg/L 3.00Hexachlorobutadiene 1 07/14/22 05:50 6200BJLB
5.04 µg/L 0.500Di-Isopropyl Ether (DIPE)1 07/14/22 05:50 6200BJLB
6.32 µg/L 0.500Isopropylbenzene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5004-Isopropyl toluene 1 07/14/22 05:50 6200BJLB
6.87 µg/L 1.002-Hexanone 1 07/14/22 05:50 6200BJLB
8.28 µg/L 5.00Methyl Ethyl Ketone (MEK)1 07/14/22 05:50 6200BJLB
<2.00 µg/L 2.00Methylene Chloride 1 07/14/22 05:50 6200BJLB
13.5 µg/L 1.00Methyl tert-butyl ether (MTBE)1 07/14/22 05:50 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 7 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-2
93842 Matrix:
7/6/2022 14:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
6.10 µg/L 1.004-Methyl-2-Pentanone 1 07/14/22 05:50 6200BJLB
32.4 µg/L 1.00Naphthalene 1 07/14/22 05:50 6200BJLB
15.0 µg/L 0.500n-Propylbenzene 1 07/14/22 05:50 6200BJLB
0.975 µg/L 0.500Styrene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Tetrachloroethene 1 07/14/22 05:50 6200BJLB
396 µg/L 5.00Toluene 10 07/14/22 21:18 6200BJLB
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Trichloroethene 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Trichlorofluoromethane 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 07/14/22 05:50 6200BJLB
105 µg/L 5.001,2,4-Trimethylbenzene 10 07/14/22 21:18 6200BJLB
30.0 µg/L 0.5001,3,5-Trimethylbenzene 1 07/14/22 05:50 6200BJLB
<5.00 µg/L 5.00Vinyl Acetate 1 07/14/22 05:50 6200BJLB
<0.500 µg/L 0.500Vinyl Chloride 1 07/14/22 05:50 6200BJLB
335 µg/L 10.0m,p-Xylene 10 07/14/22 21:18 6200BJLB
133 µg/L 5.00o-Xylene 10 07/14/22 21:18 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 8 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-2
93842 Matrix:
7/6/2022 14:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
468 µg/L 5.00Xylene (Total)10 07/14/22 21:18 6200B
Surrogate: 4-Bromofluorobenzene 103 Limits: 70-130%07/14/22 05:501 JLB V21290
Surrogate: Dibromofluoromethane 97.2 Limits: 70-130%07/14/22 05:501 JLB V21290
Surrogate: 1,2-Dichloroethane - d4 97.2 Limits: 70-130%07/14/22 05:501 JLB V21290
Surrogate: Toluene-d8 99.2 Limits: 70-130%07/14/22 05:501 JLB V21290
Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%07/14/22 21:1810 JLB V21326
Surrogate: Dibromofluoromethane 97.4 Limits: 70-130%07/14/22 21:1810 JLB V21326
Surrogate: 1,2-Dichloroethane - d4 98.6 Limits: 70-130%07/14/22 21:1810 JLB V21326
Surrogate: Toluene-d8 101 Limits: 70-130%07/14/22 21:1810 JLB V21326
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 9 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-6R
93843 Matrix:
7/6/2022 14:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1000 µg/L 1000Acetone 100 07/14/22 10:59 6200BJLB
12900 µg/L 500Benzene 1000 07/14/22 21:57 6200BJLB
<50.0 µg/L 50.0Bromobenzene 100 07/14/22 10:59 6200BJLB
<100 µg/L 100Bromochloromethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Bromodichloromethane 100 07/14/22 10:59 6200BJLB
<500 µg/L 500Bromoform 100 07/14/22 10:59 6200BJLB
<100 µg/L 100Bromomethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0n-Butylbenzene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0sec-Butyl benzene 100 07/14/22 10:59 6200BJLB
<200 µg/L 200tert-Butyl benzene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Carbon Tetrachloride 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Chlorobenzene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Chlorodibromomethane 100 07/14/22 10:59 6200BJLB
<100 µg/L 100Chloroethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Chloroform 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Chloromethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.02-Chlorotoluene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.04-Chlorotoluene 100 07/14/22 10:59 6200BJLB
<200 µg/L 2001,2-Dibromo-3-Chloropropane 100 07/14/22 10:59 6200BJLB
51.2 µg/L 50.01,2-Dibromoethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Dibromomethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,2-Dichlorobenzene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,3-Dichlorobenzene 100 07/14/22 10:59 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 10 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-6R
93843 Matrix:
7/6/2022 14:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.01,4-Dichlorobenzene 100 07/14/22 10:59 6200BJLB
<500 µg/L 500Dichlorodifluoromethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,1-Dichloroethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,2-Dichloroethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,1-Dichloroethene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0cis-1,2-Dichloroethene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0trans-1,2-Dichloroethene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,2-Dichloropropane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,3-Dichloropropane 100 07/14/22 10:59 6200BJLB
<200 µg/L 2002,2-Dichloropropane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,1-Dichloropropene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0cis-1,3-Dichloropropene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0trans-1,3-Dichloropropene 100 07/14/22 10:59 6200BJLB
<20000 µg/L 20000Ethanol 100 07/14/22 10:59 6200BJLB
2870 µg/L 50.0Ethylbenzene 100 07/14/22 10:59 6200BJLB
<300 µg/L 300Hexachlorobutadiene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Di-Isopropyl Ether (DIPE)100 07/14/22 10:59 6200BJLB
124 µg/L 50.0Isopropylbenzene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.04-Isopropyl toluene 100 07/14/22 10:59 6200BJLB
<100 µg/L 1002-Hexanone 100 07/14/22 10:59 6200BJLB
<500 µg/L 500Methyl Ethyl Ketone (MEK)100 07/14/22 10:59 6200BJLB
<200 µg/L 200Methylene Chloride 100 07/14/22 10:59 6200BJLB
<100 µg/L 100Methyl tert-butyl ether (MTBE)100 07/14/22 10:59 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 11 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-6R
93843 Matrix:
7/6/2022 14:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<100 µg/L 1004-Methyl-2-Pentanone 100 07/14/22 10:59 6200BJLB
780 µg/L 100Naphthalene 100 07/14/22 10:59 6200BJLB
340 µg/L 50.0n-Propylbenzene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Styrene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Tetrachloroethene 100 07/14/22 10:59 6200BJLB
23500 µg/L 500Toluene 1000 07/14/22 21:57 6200BJLB
<50.0 µg/L 50.01,2,3-Trichlorobenzene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,2,4-Trichlorobenzene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,1,1-Trichloroethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,1,2-Trichloroethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Trichloroethene 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Trichlorofluoromethane 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.01,2,3-Trichloropropane 100 07/14/22 10:59 6200BJLB
2200 µg/L 50.01,2,4-Trimethylbenzene 100 07/14/22 10:59 6200BJLB
552 µg/L 50.01,3,5-Trimethylbenzene 100 07/14/22 10:59 6200BJLB
<500 µg/L 500Vinyl Acetate 100 07/14/22 10:59 6200BJLB
<50.0 µg/L 50.0Vinyl Chloride 100 07/14/22 10:59 6200BJLB
9590 µg/L 100m,p-Xylene 100 07/14/22 10:59 6200BJLB
4560 µg/L 50.0o-Xylene 100 07/14/22 10:59 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 12 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-6R
93843 Matrix:
7/6/2022 14:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
14200 µg/L 50.0Xylene (Total)100 07/14/22 10:59 6200B
Surrogate: 4-Bromofluorobenzene 99.8 Limits: 70-130%07/14/22 10:59100 JLB V21290
Surrogate: Dibromofluoromethane 98.4 Limits: 70-130%07/14/22 10:59100 JLB V21290
Surrogate: 1,2-Dichloroethane - d4 97.0 Limits: 70-130%07/14/22 10:59100 JLB V21290
Surrogate: Toluene-d8 100 Limits: 70-130%07/14/22 10:59100 JLB V21290
Surrogate: 4-Bromofluorobenzene 99.0 Limits: 70-130%07/14/22 21:571000 JLB V21326
Surrogate: Dibromofluoromethane 98.4 Limits: 70-130%07/14/22 21:571000 JLB V21326
Surrogate: 1,2-Dichloroethane - d4 98.8 Limits: 70-130%07/14/22 21:571000 JLB V21326
Surrogate: Toluene-d8 99.8 Limits: 70-130%07/14/22 21:571000 JLB V21326
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 13 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-7
93844 Matrix:
7/6/2022 15:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1000 µg/L 1000Acetone 100 07/14/22 23:15 6200BJLB
3260 µg/L 50.0Benzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Bromobenzene 100 07/14/22 23:15 6200BJLB
<100 µg/L 100Bromochloromethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Bromodichloromethane 100 07/14/22 23:15 6200BJLB
<500 µg/L 500Bromoform 100 07/14/22 23:15 6200BJLB
<100 µg/L 100Bromomethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0n-Butylbenzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0sec-Butyl benzene 100 07/14/22 23:15 6200BJLB
<200 µg/L 200tert-Butyl benzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Carbon Tetrachloride 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Chlorobenzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Chlorodibromomethane 100 07/14/22 23:15 6200BJLB
<100 µg/L 100Chloroethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Chloroform 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Chloromethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.02-Chlorotoluene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.04-Chlorotoluene 100 07/14/22 23:15 6200BJLB
<200 µg/L 2001,2-Dibromo-3-Chloropropane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,2-Dibromoethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Dibromomethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,2-Dichlorobenzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,3-Dichlorobenzene 100 07/14/22 23:15 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 14 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-7
93844 Matrix:
7/6/2022 15:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.01,4-Dichlorobenzene 100 07/14/22 23:15 6200BJLB
<500 µg/L 500Dichlorodifluoromethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,1-Dichloroethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,2-Dichloroethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,1-Dichloroethene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0cis-1,2-Dichloroethene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0trans-1,2-Dichloroethene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,2-Dichloropropane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,3-Dichloropropane 100 07/14/22 23:15 6200BJLB
<200 µg/L 2002,2-Dichloropropane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,1-Dichloropropene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0cis-1,3-Dichloropropene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0trans-1,3-Dichloropropene 100 07/14/22 23:15 6200BJLB
<20000 µg/L 20000Ethanol 100 07/14/22 23:15 6200BJLB
874 µg/L 50.0Ethylbenzene 100 07/14/22 23:15 6200BJLB
<300 µg/L 300Hexachlorobutadiene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Di-Isopropyl Ether (DIPE)100 07/14/22 23:15 6200BJLB
90.3 µg/L 50.0Isopropylbenzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.04-Isopropyl toluene 100 07/14/22 23:15 6200BJLB
<100 µg/L 1002-Hexanone 100 07/14/22 23:15 6200BJLB
<500 µg/L 500Methyl Ethyl Ketone (MEK)100 07/14/22 23:15 6200BJLB
<200 µg/L 200Methylene Chloride 100 07/14/22 23:15 6200BJLB
<100 µg/L 100Methyl tert-butyl ether (MTBE)100 07/14/22 23:15 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 15 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-7
93844 Matrix:
7/6/2022 15:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
121 µg/L 1004-Methyl-2-Pentanone 100 07/14/22 23:15 6200BJLB
448 µg/L 100Naphthalene 100 07/14/22 23:15 6200BJLB
147 µg/L 50.0n-Propylbenzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Styrene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Tetrachloroethene 100 07/14/22 23:15 6200BJLB
84.7 µg/L 50.0Toluene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,2,3-Trichlorobenzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,2,4-Trichlorobenzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,1,1-Trichloroethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,1,2-Trichloroethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Trichloroethene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Trichlorofluoromethane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,2,3-Trichloropropane 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,2,4-Trimethylbenzene 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.01,3,5-Trimethylbenzene 100 07/14/22 23:15 6200BJLB
<500 µg/L 500Vinyl Acetate 100 07/14/22 23:15 6200BJLB
<50.0 µg/L 50.0Vinyl Chloride 100 07/14/22 23:15 6200BJLB
<100 µg/L 100m,p-Xylene 100 07/14/22 23:15 6200BJLB
61.6 µg/L 50.0o-Xylene 100 07/14/22 23:15 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 16 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-7
93844 Matrix:
7/6/2022 15:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
61.6 µg/L 50.0Xylene (Total)100 07/14/22 23:15 6200B
Surrogate: 4-Bromofluorobenzene 99.0 Limits: 70-130%07/14/22 23:15100 JLB V21326
Surrogate: Dibromofluoromethane 97.4 Limits: 70-130%07/14/22 23:15100 JLB V21326
Surrogate: 1,2-Dichloroethane - d4 97.8 Limits: 70-130%07/14/22 23:15100 JLB V21326
Surrogate: Toluene-d8 99.8 Limits: 70-130%07/14/22 23:15100 JLB V21326
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 17 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-9
93845 Matrix:
7/6/2022 16:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 07/14/22 18:44 6200BJLB
2.23 µg/L 0.500Benzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Bromobenzene 1 07/14/22 18:44 6200BJLB
<1.00 µg/L 1.00Bromochloromethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Bromodichloromethane 1 07/14/22 18:44 6200BJLB
<5.00 µg/L 5.00Bromoform 1 07/14/22 18:44 6200BJLB
<1.00 µg/L 1.00Bromomethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500n-Butylbenzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500sec-Butyl benzene 1 07/14/22 18:44 6200BJLB
<2.00 µg/L 2.00tert-Butyl benzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Carbon Tetrachloride 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Chlorobenzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Chlorodibromomethane 1 07/14/22 18:44 6200BJLB
<1.00 µg/L 1.00Chloroethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Chloroform 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Chloromethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5002-Chlorotoluene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5004-Chlorotoluene 1 07/14/22 18:44 6200BJLB
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,2-Dibromoethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Dibromomethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 07/14/22 18:44 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 18 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-9
93845 Matrix:
7/6/2022 16:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 07/14/22 18:44 6200BJLB
<5.00 µg/L 5.00Dichlorodifluoromethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,1-Dichloroethane 1 07/14/22 18:44 6200BJLB
1.12 µg/L 0.5001,2-Dichloroethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,1-Dichloroethene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,2-Dichloropropane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,3-Dichloropropane 1 07/14/22 18:44 6200BJLB
<2.00 µg/L 2.002,2-Dichloropropane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,1-Dichloropropene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 07/14/22 18:44 6200BJLB
<200 µg/L 200Ethanol 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Ethylbenzene 1 07/14/22 18:44 6200BJLB
<3.00 µg/L 3.00Hexachlorobutadiene 1 07/14/22 18:44 6200BJLB
0.902 µg/L 0.500Di-Isopropyl Ether (DIPE)1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Isopropylbenzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5004-Isopropyl toluene 1 07/14/22 18:44 6200BJLB
<1.00 µg/L 1.002-Hexanone 1 07/14/22 18:44 6200BJLB
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 07/14/22 18:44 6200BJLB
<2.00 µg/L 2.00Methylene Chloride 1 07/14/22 18:44 6200BJLB
12.7 µg/L 1.00Methyl tert-butyl ether (MTBE)1 07/14/22 18:44 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 19 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-9
93845 Matrix:
7/6/2022 16:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 07/14/22 18:44 6200BJLB
<1.00 µg/L 1.00Naphthalene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500n-Propylbenzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Styrene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Tetrachloroethene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Toluene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Trichloroethene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Trichlorofluoromethane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 07/14/22 18:44 6200BJLB
<5.00 µg/L 5.00Vinyl Acetate 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500Vinyl Chloride 1 07/14/22 18:44 6200BJLB
<1.00 µg/L 1.00m,p-Xylene 1 07/14/22 18:44 6200BJLB
<0.500 µg/L 0.500o-Xylene 1 07/14/22 18:44 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 20 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-9
93845 Matrix:
7/6/2022 16:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 07/14/22 18:44 6200B
Surrogate: 4-Bromofluorobenzene 101 Limits: 70-130%07/14/22 18:441 JLB V21326
Surrogate: Dibromofluoromethane 98.4 Limits: 70-130%07/14/22 18:441 JLB V21326
Surrogate: 1,2-Dichloroethane - d4 100 Limits: 70-130%07/14/22 18:441 JLB V21326
Surrogate: Toluene-d8 99.8 Limits: 70-130%07/14/22 18:441 JLB V21326
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 21 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-12
93846 Matrix:
7/6/2022 13:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Benzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Bromobenzene 1 07/14/22 07:45 6200BJLB
<1.00 µg/L 1.00Bromochloromethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Bromodichloromethane 1 07/14/22 07:45 6200BJLB
<5.00 µg/L 5.00Bromoform 1 07/14/22 07:45 6200BJLB
<1.00 µg/L 1.00Bromomethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500n-Butylbenzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500sec-Butyl benzene 1 07/14/22 07:45 6200BJLB
<2.00 µg/L 2.00tert-Butyl benzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Carbon Tetrachloride 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Chlorobenzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Chlorodibromomethane 1 07/14/22 07:45 6200BJLB
<1.00 µg/L 1.00Chloroethane 1 07/14/22 07:45 6200BJLB
1.82 µg/L 0.500Chloroform 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Chloromethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5002-Chlorotoluene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5004-Chlorotoluene 1 07/14/22 07:45 6200BJLB
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,2-Dibromoethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Dibromomethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 07/14/22 07:45 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 22 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-12
93846 Matrix:
7/6/2022 13:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 07/14/22 07:45 6200BJLB
<5.00 µg/L 5.00Dichlorodifluoromethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,1-Dichloroethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,2-Dichloroethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,1-Dichloroethene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,2-Dichloropropane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,3-Dichloropropane 1 07/14/22 07:45 6200BJLB
<2.00 µg/L 2.002,2-Dichloropropane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,1-Dichloropropene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 07/14/22 07:45 6200BJLB
<200 µg/L 200Ethanol 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Ethylbenzene 1 07/14/22 07:45 6200BJLB
<3.00 µg/L 3.00Hexachlorobutadiene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Isopropylbenzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5004-Isopropyl toluene 1 07/14/22 07:45 6200BJLB
<1.00 µg/L 1.002-Hexanone 1 07/14/22 07:45 6200BJLB
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 07/14/22 07:45 6200BJLB
<2.00 µg/L 2.00Methylene Chloride 1 07/14/22 07:45 6200BJLB
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 07/14/22 07:45 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 23 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-12
93846 Matrix:
7/6/2022 13:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 07/14/22 07:45 6200BJLB
<1.00 µg/L 1.00Naphthalene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500n-Propylbenzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Styrene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 07/14/22 07:45 6200BJLB
1.65 µg/L 0.500Tetrachloroethene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Toluene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Trichloroethene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Trichlorofluoromethane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 07/14/22 07:45 6200BJLB
<5.00 µg/L 5.00Vinyl Acetate 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500Vinyl Chloride 1 07/14/22 07:45 6200BJLB
<1.00 µg/L 1.00m,p-Xylene 1 07/14/22 07:45 6200BJLB
<0.500 µg/L 0.500o-Xylene 1 07/14/22 07:45 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 24 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-12
93846 Matrix:
7/6/2022 13:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 07/14/22 07:45 6200B
Surrogate: 4-Bromofluorobenzene 99.0 Limits: 70-130%07/14/22 07:451 JLB V21290
Surrogate: Dibromofluoromethane 98.2 Limits: 70-130%07/14/22 07:451 JLB V21290
Surrogate: 1,2-Dichloroethane - d4 98.8 Limits: 70-130%07/14/22 07:451 JLB V21290
Surrogate: Toluene-d8 101 Limits: 70-130%07/14/22 07:451 JLB V21290
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 25 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-14
93847 Matrix:
7/6/2022 13:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
2490 µg/L 1000Acetone 100 07/14/22 11:37 6200BJLB
6400 µg/L 50.0Benzene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Bromobenzene 100 07/14/22 11:37 6200BJLB
<100 µg/L 100Bromochloromethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Bromodichloromethane 100 07/14/22 11:37 6200BJLB
<500 µg/L 500Bromoform 100 07/14/22 11:37 6200BJLB
<100 µg/L 100Bromomethane 100 07/14/22 11:37 6200BJLB
64.9 µg/L 50.0n-Butylbenzene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0sec-Butyl benzene 100 07/14/22 11:37 6200BJLB
<200 µg/L 200tert-Butyl benzene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Carbon Tetrachloride 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Chlorobenzene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Chlorodibromomethane 100 07/14/22 11:37 6200BJLB
<100 µg/L 100Chloroethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Chloroform 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Chloromethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.02-Chlorotoluene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.04-Chlorotoluene 100 07/14/22 11:37 6200BJLB
<200 µg/L 2001,2-Dibromo-3-Chloropropane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,2-Dibromoethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Dibromomethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,2-Dichlorobenzene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,3-Dichlorobenzene 100 07/14/22 11:37 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 26 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-14
93847 Matrix:
7/6/2022 13:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.01,4-Dichlorobenzene 100 07/14/22 11:37 6200BJLB
<500 µg/L 500Dichlorodifluoromethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,1-Dichloroethane 100 07/14/22 11:37 6200BJLB
86.9 µg/L 50.01,2-Dichloroethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,1-Dichloroethene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0cis-1,2-Dichloroethene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0trans-1,2-Dichloroethene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,2-Dichloropropane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,3-Dichloropropane 100 07/14/22 11:37 6200BJLB
<200 µg/L 2002,2-Dichloropropane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,1-Dichloropropene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0cis-1,3-Dichloropropene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0trans-1,3-Dichloropropene 100 07/14/22 11:37 6200BJLB
<20000 µg/L 20000Ethanol 100 07/14/22 11:37 6200BJLB
1880 µg/L 50.0Ethylbenzene 100 07/14/22 11:37 6200BJLB
<300 µg/L 300Hexachlorobutadiene 100 07/14/22 11:37 6200BJLB
137 µg/L 50.0Di-Isopropyl Ether (DIPE)100 07/14/22 11:37 6200BJLB
160 µg/L 50.0Isopropylbenzene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.04-Isopropyl toluene 100 07/14/22 11:37 6200BJLB
634 µg/L 1002-Hexanone 100 07/14/22 11:37 6200BJLB
<500 µg/L 500Methyl Ethyl Ketone (MEK)100 07/14/22 11:37 6200BJLB
<200 µg/L 200Methylene Chloride 100 07/14/22 11:37 6200BJLB
867 µg/L 100Methyl tert-butyl ether (MTBE)100 07/14/22 11:37 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 27 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-14
93847 Matrix:
7/6/2022 13:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
299 µg/L 1004-Methyl-2-Pentanone 100 07/14/22 11:37 6200BJLB
636 µg/L 100Naphthalene 100 07/14/22 11:37 6200BJLB
371 µg/L 50.0n-Propylbenzene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Styrene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Tetrachloroethene 100 07/14/22 11:37 6200BJLB
9390 µg/L 50.0Toluene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,2,3-Trichlorobenzene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,2,4-Trichlorobenzene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,1,1-Trichloroethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,1,2-Trichloroethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Trichloroethene 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Trichlorofluoromethane 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.01,2,3-Trichloropropane 100 07/14/22 11:37 6200BJLB
1860 µg/L 50.01,2,4-Trimethylbenzene 100 07/14/22 11:37 6200BJLB
509 µg/L 50.01,3,5-Trimethylbenzene 100 07/14/22 11:37 6200BJLB
<500 µg/L 500Vinyl Acetate 100 07/14/22 11:37 6200BJLB
<50.0 µg/L 50.0Vinyl Chloride 100 07/14/22 11:37 6200BJLB
5070 µg/L 100m,p-Xylene 100 07/14/22 11:37 6200BJLB
3350 µg/L 50.0o-Xylene 100 07/14/22 11:37 6200BJLB
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 28 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
22-189-0043
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Matt James
Cary
02172214.50 Received : 07/08/2022
Needham Services Station
Report Date : 07/18/2022
Sample ID :
Lab No :
Sampled:MW-14
93847 Matrix:
7/6/2022 13:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
8420 µg/L 50.0Xylene (Total)100 07/14/22 11:37 6200B
Surrogate: 4-Bromofluorobenzene 101 Limits: 70-130%07/14/22 11:37100 JLB V21290
Surrogate: Dibromofluoromethane 97.0 Limits: 70-130%07/14/22 11:37100 JLB V21290
Surrogate: 1,2-Dichloroethane - d4 96.0 Limits: 70-130%07/14/22 11:37100 JLB V21290
Surrogate: Toluene-d8 100 Limits: 70-130%07/14/22 11:37100 JLB V21290
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 29 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21290QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21289
Associated Lab Samples: 93842, 93843, 93846, 93847
LRB-V21289 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
07/14/22 05:1210.0< 10.0µg/LAcetone
07/14/22 05:120.500< 0.500µg/LBenzene
07/14/22 05:120.500< 0.500µg/LBromobenzene
07/14/22 05:121.00< 1.00µg/LBromochloromethane
07/14/22 05:120.500< 0.500µg/LBromodichloromethane
07/14/22 05:125.00< 5.00µg/LBromoform
07/14/22 05:121.00< 1.00µg/LBromomethane
07/14/22 05:120.500< 0.500µg/Ln-Butylbenzene
07/14/22 05:120.500< 0.500µg/Lsec-Butyl benzene
07/14/22 05:122.00< 2.00µg/Ltert-Butyl benzene
07/14/22 05:120.500< 0.500µg/LCarbon Tetrachloride
07/14/22 05:120.500< 0.500µg/LChlorobenzene
07/14/22 05:120.500< 0.500µg/LChlorodibromomethane
07/14/22 05:121.00< 1.00µg/LChloroethane
07/14/22 05:120.500< 0.500µg/LChloroform
07/14/22 05:120.500< 0.500µg/LChloromethane
07/14/22 05:120.500< 0.500µg/L2-Chlorotoluene
07/14/22 05:120.500< 0.500µg/L4-Chlorotoluene
07/14/22 05:122.00< 2.00µg/L1,2-Dibromo-3-Chloropropane
07/14/22 05:120.500< 0.500µg/L1,2-Dibromoethane
07/14/22 05:120.500< 0.500µg/LDibromomethane
07/14/22 05:120.500< 0.500µg/L1,2-Dichlorobenzene
07/14/22 05:120.500< 0.500µg/L1,3-Dichlorobenzene
07/14/22 05:120.500< 0.500µg/L1,4-Dichlorobenzene
07/14/22 05:125.00< 5.00µg/LDichlorodifluoromethane
07/14/22 05:120.500< 0.500µg/L1,1-Dichloroethane
07/14/22 05:120.500< 0.500µg/L1,2-Dichloroethane
Page 1 of 12Date:07/18/2022 04:00 PM
Page 30 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21290QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21289
Associated Lab Samples: 93842, 93843, 93846, 93847
LRB-V21289 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
07/14/22 05:120.500< 0.500µg/L1,1-Dichloroethene
07/14/22 05:120.500< 0.500µg/Lcis-1,2-Dichloroethene
07/14/22 05:120.500< 0.500µg/Ltrans-1,2-Dichloroethene
07/14/22 05:120.500< 0.500µg/L1,2-Dichloropropane
07/14/22 05:120.500< 0.500µg/L1,3-Dichloropropane
07/14/22 05:122.00< 2.00µg/L2,2-Dichloropropane
07/14/22 05:120.500< 0.500µg/L1,1-Dichloropropene
07/14/22 05:120.500< 0.500µg/Lcis-1,3-Dichloropropene
07/14/22 05:120.500< 0.500µg/Ltrans-1,3-Dichloropropene
07/14/22 05:12200< 200µg/LEthanol
07/14/22 05:120.500< 0.500µg/LEthylbenzene
07/14/22 05:123.00< 3.00µg/LHexachlorobutadiene
07/14/22 05:120.500< 0.500µg/LDi-Isopropyl Ether (DIPE)
07/14/22 05:120.500< 0.500µg/LIsopropylbenzene
07/14/22 05:120.500< 0.500µg/L4-Isopropyl toluene
07/14/22 05:121.00< 1.00µg/L2-Hexanone
07/14/22 05:125.00< 5.00µg/LMethyl Ethyl Ketone (MEK)
07/14/22 05:122.00< 2.00µg/LMethylene Chloride
07/14/22 05:121.00< 1.00µg/LMethyl tert-butyl ether (MTBE)
07/14/22 05:121.00< 1.00µg/L4-Methyl-2-Pentanone
07/14/22 05:121.00< 1.00µg/LNaphthalene
07/14/22 05:120.500< 0.500µg/Ln-Propylbenzene
07/14/22 05:120.500< 0.500µg/LStyrene
07/14/22 05:120.500< 0.500µg/L1,1,1,2-Tetrachloroethane
07/14/22 05:120.500< 0.500µg/L1,1,2,2-Tetrachloroethane
07/14/22 05:120.500< 0.500µg/LTetrachloroethene
07/14/22 05:120.500< 0.500µg/LToluene
Page 2 of 12Date:07/18/2022 04:00 PM
Page 31 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21290QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21289
Associated Lab Samples: 93842, 93843, 93846, 93847
LRB-V21289 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
07/14/22 05:120.500< 0.500µg/L1,2,3-Trichlorobenzene
07/14/22 05:120.500< 0.500µg/L1,2,4-Trichlorobenzene
07/14/22 05:120.500< 0.500µg/L1,1,1-Trichloroethane
07/14/22 05:120.500< 0.500µg/L1,1,2-Trichloroethane
07/14/22 05:120.500< 0.500µg/LTrichloroethene
07/14/22 05:120.500< 0.500µg/LTrichlorofluoromethane
07/14/22 05:120.500< 0.500µg/L1,2,3-Trichloropropane
07/14/22 05:120.500< 0.500µg/L1,2,4-Trimethylbenzene
07/14/22 05:120.500< 0.500µg/L1,3,5-Trimethylbenzene
07/14/22 05:125.00< 5.00µg/LVinyl Acetate
07/14/22 05:120.500< 0.500µg/LVinyl Chloride
07/14/22 05:121.00< 1.00µg/Lm,p-Xylene
07/14/22 05:120.500< 0.500µg/Lo-Xylene
07/14/22 05:124-Bromofluorobenzene (S)101 70-130
07/14/22 05:12Dibromofluoromethane (S)102 70-130
07/14/22 05:121,2-Dichloroethane - d4 (S)100 70-130
07/14/22 05:12Toluene-d8 (S)101 70-130
LCS-V21289 LCSD-V21289Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
46.3 11611445.740.0µg/LAcetone 40-160 1.3 20.0
19.9 99.510220.320.0µg/LBenzene 70-130 1.9 20.0
19.7 98.510120.120.0µg/LBromobenzene 70-130 2.0 20.0
20.6 10310821.620.0µg/LBromochloromethane 70-130 4.7 20.0
21.3 10710621.120.0µg/LBromodichloromethane 70-130 0.9 20.0
Page 3 of 12Date:07/18/2022 04:00 PM
Page 32 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21290QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21289
LCS-V21289 LCSD-V21289Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
21.5 10810621.220.0µg/LBromoform 70-130 1.4 20.0
18.0 90.095.519.120.0µg/LBromomethane 60-140 5.9 20.0
19.6 98.010220.320.0µg/Ln-Butylbenzene 70-130 3.5 20.0
20.0 10010220.420.0µg/Lsec-Butyl benzene 70-130 1.9 20.0
20.4 10210320.520.0µg/Ltert-Butyl benzene 70-130 0.4 20.0
19.3 96.510520.920.0µg/LCarbon Tetrachloride 70-130 7.9 20.0
20.5 10310621.220.0µg/LChlorobenzene 70-130 3.3 20.0
22.0 11010821.520.0µg/LChlorodibromomethane 70-130 2.2 20.0
17.5 87.587.017.420.0µg/LChloroethane 60-140 0.5 20.0
20.9 10510420.820.0µg/LChloroform 70-130 0.4 20.0
18.2 91.094.518.920.0µg/LChloromethane 60-140 3.7 20.0
20.1 10110320.620.0µg/L2-Chlorotoluene 70-130 2.4 20.0
20.1 10110220.320.0µg/L4-Chlorotoluene 70-130 0.9 20.0
25.4 12711623.120.0µg/L1,2-Dibromo-3-Chloropropane 70-130 9.4 20.0
22.5 11311122.120.0µg/L1,2-Dibromoethane 70-130 1.7 20.0
21.1 10610921.820.0µg/LDibromomethane 70-130 3.2 20.0
21.4 10710721.320.0µg/L1,2-Dichlorobenzene 70-130 0.4 20.0
21.6 10811022.020.0µg/L1,3-Dichlorobenzene 70-130 1.8 20.0
21.5 10810921.720.0µg/L1,4-Dichlorobenzene 70-130 0.9 20.0
16.7 83.589.017.820.0µg/LDichlorodifluoromethane 60-140 6.3 20.0
20.5 10310420.820.0µg/L1,1-Dichloroethane 70-130 1.4 20.0
19.4 97.098.519.720.0µg/L1,2-Dichloroethane 70-130 1.5 20.0
18.7 93.596.519.320.0µg/L1,1-Dichloroethene 70-130 3.1 20.0
19.9 99.510220.320.0µg/Lcis-1,2-Dichloroethene 70-130 1.9 20.0
19.7 98.599.019.820.0µg/Ltrans-1,2-Dichloroethene 70-130 0.5 20.0
20.2 10199.019.820.0µg/L1,2-Dichloropropane 70-130 2.0 20.0
Page 4 of 12Date:07/18/2022 04:00 PM
Page 33 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21290QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21289
LCS-V21289 LCSD-V21289Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.8 10410521.020.0µg/L1,3-Dichloropropane 70-130 0.9 20.0
17.2 86.087.517.520.0µg/L2,2-Dichloropropane 70-130 1.7 20.0
19.2 96.010120.120.0µg/L1,1-Dichloropropene 70-130 4.5 20.0
20.4 10210420.720.0µg/Lcis-1,3-Dichloropropene 70-130 1.4 20.0
20.4 10210420.720.0µg/Ltrans-1,3-Dichloropropene 70-130 1.4 20.0
488 97.6111554500µg/LEthanol 60-140 12.6 20.0
20.0 10010120.220.0µg/LEthylbenzene 70-130 0.9 20.0
18.0 90.010220.420.0µg/LHexachlorobutadiene 70-130 12.5 20.0
19.5 97.510020.020.0µg/LDi-Isopropyl Ether (DIPE)70-130 2.5 20.0
20.2 10110420.820.0µg/LIsopropylbenzene 70-130 2.9 20.0
20.4 10210520.920.0µg/L4-Isopropyl toluene 70-130 2.4 20.0
19.3 96.597.019.420.0µg/L2-Hexanone 60-140 0.5 20.0
22.0 11011122.120.0µg/LMethyl Ethyl Ketone (MEK)60-140 0.4 20.0
19.8 99.099.519.920.0µg/LMethylene Chloride 70-130 0.5 20.0
22.4 11211222.320.0µg/LMethyl tert-butyl ether (MTBE)70-130 0.4 20.0
19.4 97.097.019.420.0µg/L4-Methyl-2-Pentanone 60-140 0.0 20.0
18.8 94.095.519.120.0µg/LNaphthalene 70-130 1.5 20.0
20.2 10110320.520.0µg/Ln-Propylbenzene 70-130 1.4 20.0
20.4 10210220.320.0µg/LStyrene 70-130 0.4 20.0
20.7 10410520.920.0µg/L1,1,1,2-Tetrachloroethane 70-130 0.9 20.0
20.0 10010520.920.0µg/L1,1,2,2-Tetrachloroethane 70-130 4.4 20.0
19.0 95.098.019.620.0µg/LTetrachloroethene 70-130 3.1 20.0
21.0 10510721.320.0µg/LToluene 70-130 1.4 20.0
20.1 10197.519.520.0µg/L1,2,3-Trichlorobenzene 70-130 3.0 20.0
21.5 10810621.220.0µg/L1,2,4-Trichlorobenzene 70-130 1.4 20.0
20.4 10210420.720.0µg/L1,1,1-Trichloroethane 70-130 1.4 20.0
Page 5 of 12Date:07/18/2022 04:00 PM
Page 34 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21290QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21289
LCS-V21289 LCSD-V21289Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.9 10510921.820.0µg/L1,1,2-Trichloroethane 70-130 4.2 20.0
20.6 10310521.020.0µg/LTrichloroethene 70-130 1.9 20.0
19.0 95.010020.020.0µg/LTrichlorofluoromethane 60-140 5.1 20.0
22.1 11111021.920.0µg/L1,2,3-Trichloropropane 70-130 0.9 20.0
20.3 10210320.520.0µg/L1,2,4-Trimethylbenzene 70-130 0.9 20.0
19.8 99.010220.420.0µg/L1,3,5-Trimethylbenzene 70-130 2.9 20.0
16.9 84.593.018.620.0µg/LVinyl Acetate 60-140 9.5 20.0
18.4 92.093.518.720.0µg/LVinyl Chloride 60-140 1.6 20.0
40.5 10110541.840.0µg/Lm,p-Xylene 70-130 3.1 20.0
19.9 99.599.019.820.0µg/Lo-Xylene 70-130 0.5 20.0
1011024-Bromofluorobenzene (S)70-130
101104Dibromofluoromethane (S)70-130
99.41001,2-Dichloroethane - d4 (S)70-130
100100Toluene-d8 (S)70-130
Page 6 of 12Date:07/18/2022 04:00 PM
Page 35 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21326QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21323
Associated Lab Samples: 93842, 93843, 93844, 93845
LRB-V21323 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
07/14/22 18:0410.0< 10.0µg/LAcetone
07/14/22 18:040.500< 0.500µg/LBenzene
07/14/22 18:040.500< 0.500µg/LBromobenzene
07/14/22 18:041.00< 1.00µg/LBromochloromethane
07/14/22 18:040.500< 0.500µg/LBromodichloromethane
07/14/22 18:045.00< 5.00µg/LBromoform
07/14/22 18:041.00< 1.00µg/LBromomethane
07/14/22 18:040.500< 0.500µg/Ln-Butylbenzene
07/14/22 18:040.500< 0.500µg/Lsec-Butyl benzene
07/14/22 18:042.00< 2.00µg/Ltert-Butyl benzene
07/14/22 18:040.500< 0.500µg/LCarbon Tetrachloride
07/14/22 18:040.500< 0.500µg/LChlorobenzene
07/14/22 18:040.500< 0.500µg/LChlorodibromomethane
07/14/22 18:041.00< 1.00µg/LChloroethane
07/14/22 18:040.500< 0.500µg/LChloroform
07/14/22 18:040.500< 0.500µg/LChloromethane
07/14/22 18:040.500< 0.500µg/L2-Chlorotoluene
07/14/22 18:040.500< 0.500µg/L4-Chlorotoluene
07/14/22 18:042.00< 2.00µg/L1,2-Dibromo-3-Chloropropane
07/14/22 18:040.500< 0.500µg/L1,2-Dibromoethane
07/14/22 18:040.500< 0.500µg/LDibromomethane
07/14/22 18:040.500< 0.500µg/L1,2-Dichlorobenzene
07/14/22 18:040.500< 0.500µg/L1,3-Dichlorobenzene
07/14/22 18:040.500< 0.500µg/L1,4-Dichlorobenzene
07/14/22 18:045.00< 5.00µg/LDichlorodifluoromethane
07/14/22 18:040.500< 0.500µg/L1,1-Dichloroethane
07/14/22 18:040.500< 0.500µg/L1,2-Dichloroethane
Page 7 of 12Date:07/18/2022 04:00 PM
Page 36 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21326QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21323
Associated Lab Samples: 93842, 93843, 93844, 93845
LRB-V21323 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
07/14/22 18:040.500< 0.500µg/L1,1-Dichloroethene
07/14/22 18:040.500< 0.500µg/Lcis-1,2-Dichloroethene
07/14/22 18:040.500< 0.500µg/Ltrans-1,2-Dichloroethene
07/14/22 18:040.500< 0.500µg/L1,2-Dichloropropane
07/14/22 18:040.500< 0.500µg/L1,3-Dichloropropane
07/14/22 18:042.00< 2.00µg/L2,2-Dichloropropane
07/14/22 18:040.500< 0.500µg/L1,1-Dichloropropene
07/14/22 18:040.500< 0.500µg/Lcis-1,3-Dichloropropene
07/14/22 18:040.500< 0.500µg/Ltrans-1,3-Dichloropropene
07/14/22 18:04200< 200µg/LEthanol
07/14/22 18:040.500< 0.500µg/LEthylbenzene
07/14/22 18:043.00< 3.00µg/LHexachlorobutadiene
07/14/22 18:040.500< 0.500µg/LDi-Isopropyl Ether (DIPE)
07/14/22 18:040.500< 0.500µg/LIsopropylbenzene
07/14/22 18:040.500< 0.500µg/L4-Isopropyl toluene
07/14/22 18:041.00< 1.00µg/L2-Hexanone
07/14/22 18:045.00< 5.00µg/LMethyl Ethyl Ketone (MEK)
07/14/22 18:042.00< 2.00µg/LMethylene Chloride
07/14/22 18:041.00< 1.00µg/LMethyl tert-butyl ether (MTBE)
07/14/22 18:041.00< 1.00µg/L4-Methyl-2-Pentanone
07/14/22 18:041.00< 1.00µg/LNaphthalene
07/14/22 18:040.500< 0.500µg/Ln-Propylbenzene
07/14/22 18:040.500< 0.500µg/LStyrene
07/14/22 18:040.500< 0.500µg/L1,1,1,2-Tetrachloroethane
07/14/22 18:040.500< 0.500µg/L1,1,2,2-Tetrachloroethane
07/14/22 18:040.500< 0.500µg/LTetrachloroethene
07/14/22 18:040.500< 0.500µg/LToluene
Page 8 of 12Date:07/18/2022 04:00 PM
Page 37 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21326QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21323
Associated Lab Samples: 93842, 93843, 93844, 93845
LRB-V21323 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
07/14/22 18:040.500< 0.500µg/L1,2,3-Trichlorobenzene
07/14/22 18:040.500< 0.500µg/L1,2,4-Trichlorobenzene
07/14/22 18:040.500< 0.500µg/L1,1,1-Trichloroethane
07/14/22 18:040.500< 0.500µg/L1,1,2-Trichloroethane
07/14/22 18:040.500< 0.500µg/LTrichloroethene
07/14/22 18:040.500< 0.500µg/LTrichlorofluoromethane
07/14/22 18:040.500< 0.500µg/L1,2,3-Trichloropropane
07/14/22 18:040.500< 0.500µg/L1,2,4-Trimethylbenzene
07/14/22 18:040.500< 0.500µg/L1,3,5-Trimethylbenzene
07/14/22 18:045.00< 5.00µg/LVinyl Acetate
07/14/22 18:040.500< 0.500µg/LVinyl Chloride
07/14/22 18:041.00< 1.00µg/Lm,p-Xylene
07/14/22 18:040.500< 0.500µg/Lo-Xylene
07/14/22 18:044-Bromofluorobenzene (S)102 70-130
07/14/22 18:04Dibromofluoromethane (S)99.6 70-130
07/14/22 18:041,2-Dichloroethane - d4 (S)99.8 70-130
07/14/22 18:04Toluene-d8 (S)100 70-130
LCS-V21323 LCSD-V21323Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
38.3 95.797.539.040.0µg/LAcetone 40-160 1.8 20.0
19.3 96.595.019.020.0µg/LBenzene 70-130 1.5 20.0
18.9 94.595.519.120.0µg/LBromobenzene 70-130 1.0 20.0
20.1 10198.519.720.0µg/LBromochloromethane 70-130 2.0 20.0
20.7 10410220.420.0µg/LBromodichloromethane 70-130 1.4 20.0
Page 9 of 12Date:07/18/2022 04:00 PM
Page 38 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21326QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21323
LCS-V21323 LCSD-V21323Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.7 10410320.620.0µg/LBromoform 70-130 0.4 20.0
17.7 88.587.017.420.0µg/LBromomethane 60-140 1.7 20.0
19.1 95.599.519.920.0µg/Ln-Butylbenzene 70-130 4.1 20.0
20.1 10110120.120.0µg/Lsec-Butyl benzene 70-130 0.0 20.0
19.6 98.010120.220.0µg/Ltert-Butyl benzene 70-130 3.0 20.0
20.6 10398.019.620.0µg/LCarbon Tetrachloride 70-130 4.9 20.0
20.5 10310320.520.0µg/LChlorobenzene 70-130 0.0 20.0
19.9 99.597.519.520.0µg/LChlorodibromomethane 70-130 2.0 20.0
18.1 90.590.518.120.0µg/LChloroethane 60-140 0.0 20.0
20.2 10198.019.620.0µg/LChloroform 70-130 3.0 20.0
19.6 98.096.519.320.0µg/LChloromethane 60-140 1.5 20.0
18.7 93.594.018.820.0µg/L2-Chlorotoluene 70-130 0.5 20.0
19.3 96.596.019.220.0µg/L4-Chlorotoluene 70-130 0.5 20.0
21.8 10996.519.320.0µg/L1,2-Dibromo-3-Chloropropane 70-130 12.1 20.0
20.1 10110120.120.0µg/L1,2-Dibromoethane 70-130 0.0 20.0
19.3 96.598.519.720.0µg/LDibromomethane 70-130 2.0 20.0
19.4 97.098.019.620.0µg/L1,2-Dichlorobenzene 70-130 1.0 20.0
19.9 99.599.519.920.0µg/L1,3-Dichlorobenzene 70-130 0.0 20.0
19.7 98.510020.020.0µg/L1,4-Dichlorobenzene 70-130 1.5 20.0
19.6 98.098.519.720.0µg/LDichlorodifluoromethane 60-140 0.5 20.0
19.6 98.097.019.420.0µg/L1,1-Dichloroethane 70-130 1.0 20.0
18.6 93.093.018.620.0µg/L1,2-Dichloroethane 70-130 0.0 20.0
19.7 98.598.519.720.0µg/L1,1-Dichloroethene 70-130 0.0 20.0
19.4 97.010120.120.0µg/Lcis-1,2-Dichloroethene 70-130 3.5 20.0
20.4 10210220.320.0µg/Ltrans-1,2-Dichloroethene 70-130 0.4 20.0
19.5 97.596.519.320.0µg/L1,2-Dichloropropane 70-130 1.0 20.0
Page 10 of 12Date:07/18/2022 04:00 PM
Page 39 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21326QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21323
LCS-V21323 LCSD-V21323Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.2 10110220.420.0µg/L1,3-Dichloropropane 70-130 0.9 20.0
19.4 97.010020.020.0µg/L2,2-Dichloropropane 70-130 3.0 20.0
19.3 96.598.519.720.0µg/L1,1-Dichloropropene 70-130 2.0 20.0
21.1 10610320.520.0µg/Lcis-1,3-Dichloropropene 70-130 2.8 20.0
21.1 10610320.520.0µg/Ltrans-1,3-Dichloropropene 70-130 2.8 20.0
542 108109547500µg/LEthanol 60-140 0.9 20.0
19.4 97.099.019.820.0µg/LEthylbenzene 70-130 2.0 20.0
20.2 10110821.620.0µg/LHexachlorobutadiene 70-130 6.6 20.0
20.3 10299.519.920.0µg/LDi-Isopropyl Ether (DIPE)70-130 1.9 20.0
19.2 96.098.019.620.0µg/LIsopropylbenzene 70-130 2.0 20.0
19.7 98.510020.020.0µg/L4-Isopropyl toluene 70-130 1.5 20.0
19.2 96.095.519.120.0µg/L2-Hexanone 60-140 0.5 20.0
21.8 10910420.720.0µg/LMethyl Ethyl Ketone (MEK)60-140 5.1 20.0
19.4 97.010120.120.0µg/LMethylene Chloride 70-130 3.5 20.0
20.6 10310220.420.0µg/LMethyl tert-butyl ether (MTBE)70-130 0.9 20.0
18.6 93.095.019.020.0µg/L4-Methyl-2-Pentanone 60-140 2.1 20.0
17.3 86.590.018.020.0µg/LNaphthalene 70-130 3.9 20.0
19.5 97.599.519.920.0µg/Ln-Propylbenzene 70-130 2.0 20.0
19.8 99.010020.020.0µg/LStyrene 70-130 1.0 20.0
20.6 10310320.620.0µg/L1,1,1,2-Tetrachloroethane 70-130 0.0 20.0
19.5 97.599.519.920.0µg/L1,1,2,2-Tetrachloroethane 70-130 2.0 20.0
19.4 97.099.519.920.0µg/LTetrachloroethene 70-130 2.5 20.0
20.0 10099.519.920.0µg/LToluene 70-130 0.5 20.0
19.1 95.594.018.820.0µg/L1,2,3-Trichlorobenzene 70-130 1.5 20.0
21.0 10510120.120.0µg/L1,2,4-Trichlorobenzene 70-130 4.3 20.0
19.4 97.010120.120.0µg/L1,1,1-Trichloroethane 70-130 3.5 20.0
Page 11 of 12Date:07/18/2022 04:00 PM
Page 40 of 43
Quality Control Data
22-189-0043Report No:
Project Description:
Client ID:Withers & Ravenel
Needham Services Station
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V21326QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V21323
LCS-V21323 LCSD-V21323Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.2 10199.019.820.0µg/L1,1,2-Trichloroethane 70-130 2.0 20.0
19.3 96.595.519.120.0µg/LTrichloroethene 70-130 1.0 20.0
19.5 97.597.019.420.0µg/LTrichlorofluoromethane 60-140 0.5 20.0
20.2 10110420.820.0µg/L1,2,3-Trichloropropane 70-130 2.9 20.0
19.3 96.598.019.620.0µg/L1,2,4-Trimethylbenzene 70-130 1.5 20.0
19.5 97.599.019.820.0µg/L1,3,5-Trimethylbenzene 70-130 1.5 20.0
25.8 12912324.620.0µg/LVinyl Acetate 60-140 4.7 20.0
19.7 98.596.519.320.0µg/LVinyl Chloride 60-140 2.0 20.0
40.4 10110240.740.0µg/Lm,p-Xylene 70-130 0.7 20.0
19.5 97.597.019.420.0µg/Lo-Xylene 70-130 0.5 20.0
1001004-Bromofluorobenzene (S)70-130
10199.6Dibromofluoromethane (S)70-130
99.298.61,2-Dichloroethane - d4 (S)70-130
101101Toluene-d8 (S)70-130
Page 12 of 12Date:07/18/2022 04:00 PM
Page 41 of 43
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:22-189-0043
Withers & Ravenel
01221
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:IRT-15 5.0 C
Chain of Custody (COC) present?Yes No
Yes No Not Present
Yes No Not Present
Yes No
COC agrees with sample label(s)?Yes No
COC properly completed
Samples in proper containers?
Sample containers intact?
Sufficient sample volume for indicated test(s)?
All samples received within holding time?
Cooler temperature in compliance?
Yes No
Yes No
Yes No
Yes No
Yes No
Yes NoCooler/Samples arrived at the laboratory on ice.
Samples were considered acceptable as cooling
process had begun.
Yes No
Yes No N/A
Yes No N/A
Yes No N/ASoil VOA method 5035 – compliance criteria met
Water - Sample containers properly preserved
Water - VOA vials free of headspace Yes No N/A
Trip Blanks received with VOAs
Low concentration EnCore samplers (48 hr)
High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d)
High concentration container (48 hr)
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Number of coolers/boxes received
Yes No
1
Signature:Adam Crouch Date & Time:07/08/2022 16:29:54
Special precautions or instructions included?
Comments:
Page 42 of 43
Page 43 of 43

APPENDIX B
FIELD NOTES & PHOTOGRAPHIC RECORD

PHOTO 1 View of Subject Property
PHOTO 2 View of adjoining Hurst Garage property

PHOTO 3 View of MW-2
PHOTO 4 View of MW-5

PHOTO 5 View of MW-6R
PHOTO 6 View of MW-7

PHOTO 7 View of MW-9
PHOTO 8 View of MW-12

PHOTO 9 View of MW-13
PHOTO 10 View of LNAPL in MW-13

PHOTO 11 View of MW-14

APPENDIX C
GENERAL STANDARD OPERATING PROCEDURES
Generalized Standard Operating Procedures (Not All Inclusive)

WithersRavenel
Our People. Your Success.
Soil Sampling, Soil Boring and Monitor Well Installation, Well Development Soil borings are installed utilizing a stainless-steel hand auger, direct-push hydraulic drill or auger rotary
drill using either a macro core™ sampler, hollow stem augers, or air rotary roller cone bit. Soil borings are
typically sampled at discrete intervals from the bucket of a clean stainless steel hand auger, direct push stainless steel sampler with acetate sleeve, or a split barrel sampler. When appropriate, soil samples may be collected from drill cuttings associated with the boring or well installation. Monitor wells are constructed within select soil borings of one, two, or four-inch inside diameter PVC
casing and machine slotted screen in accordance with NCAC Title 15A, Subchapter 02C (Well Construction Standards, Criteria and Standards Applicable to Water Supply and Certain Other Wells). Clean-washed “#2 Torpedo Sand” is typically utilized to fill the boring annulus surrounding the well screen, extending to a minimum of 1-foot above the well screen. A minimum 1-foot thick bentonite clay seal is emplaced above the sand pack and hydrated. Neat cement grout is placed in the remaining annulus
space from the upper portion of the bentonite seal to within 1-foot of surface grade. In coastal plain areas where shallow groundwater is encountered, a variance to construction standards may be employed to ensure the upper portion of the well screen intersects the upper aquifer surface. Wellheads may be completed with either concrete-set flush mounted traffic-bearing steel skirted manholes with bolt down covers or steel above-ground “stick-up” well protectors set in a concrete pad. The monitoring wells are
secured with locking caps. Temporary wells or piezometers may be completed with the PVC riser cut at or above grade, and are abandoned within 24-hours of their installation. Wells may be developed using a bailer, electric submersible pump, pneumatic pump, or peristaltic pump, dependent upon site conditions. When wells are developed by the driller, they may be developed with
any of the methods outlined above, in addition to air or water injection. Soil boring logs and well construction details are typically prepared for presentation in a report appendix. Borings completed in bedrock may be drilled using air rotary, coring, or sonic drilling methods. Groundwater Depth to Water Measurements

Groundwater level measurements are typically obtained using an electronic water level indicator which registers a tone and/or illuminated light when the probe contacts groundwater. Depth to groundwater measurements are obtained by lowering the probe attached to a cable usually marked in 0.01 foot intervals into the well until the probe of the meter intersects the water surface. The measurement from
the top of the riser pipe or top of casing (TOC) to the water level is recorded to the nearest 0.01 foot. The
electronic water level indicator probe and exposed probe cable is decontaminated between measurement locations.

Generalized Standard Operating Procedures (Not All Inclusive)

WithersRavenel
Our People. Your Success.
Free Product Level Measurements Light Non-Aqueous Phase Liquid (LNAPL) or “free product” present on the water table is measured using
an electronic oil/water interface probe. The interface probe has both an audible and illuminating light
that indicate when a liquid level is encountered. The oil/water interface probe registers a solid tone and solidly lit light when LNAPL petroleum product is encountered and a beeping tone flashing light when groundwater is encountered. Depth to LNAPL measurements are obtained by lowering the probe attached to a cable marked in 0.01 foot intervals into the well until the probe of the meter intersects the product or groundwater. The measurements from the top of the riser pipe or TOC to the liquid level are
recorded to the nearest 0.01 foot. The thickness of LNAPL is calculated by subtracting the depth to LNAPL measurement from the depth to groundwater measurement. The electronic interface probe is decontaminated between measurement locations. Soil Sampling and Field Screening
Soil sampling is performed in general accordance with ASTM: 1586-84 where applicable. Sampling procedures are followed to protect the chemical integrity of the soil samples and minimize the potential for cross contamination between sample locations, including discarding of the exterior of the sample which contacts the auger bucket, acetate sleeve, or split barrel sampler, the use of stainless steel sampling
equipment, and the thorough decontamination of sampling apparatus prior to use and between sample locations. Soil samples retained as a part of excavation or other intrusive “digging” activities may be collected from the bucket of excavation equipment or using a hand shovel, if appropriate. Care to collect soil samples
from excavation equipment includes retrieving native soil from material that has not made contact with the excavating equipment. Samples are collected in sealable bags or by directly filling sample containers as described above. Sampling is performed using new, disposable nitrile gloves for each sample location to ensure sample
integrity and minimize the potential for cross contamination or field personnel exposure to contaminants.
Sampling equipment such as hand auger extensions and buckets, direct push samplers, split spoons or shovels, are decontaminated prior to their use in the collection of samples. Samples are placed within laboratory grade sample containers provided by the laboratory to which the
samples are submitted, labeled, sealed, and placed in an ice filled cooler. An aliquot of the sample is
typically placed in a clean sealable bag and allowed to reach ambient air temperature for future screening of volatile vapor content with a photoionization detector (PID), flame-ionization detector (FID) or other portable screening device.
Screening of samples with a PID, FID or other field screening device is performed in accordance with
device manufacturer specifications for screening, following calibration of the instrument based on manufacturer recommended procedures.

Generalized Standard Operating Procedures (Not All Inclusive)

WithersRavenel
Our People. Your Success.
Groundwater Sampling Groundwater samples are generally collected using one of three standard methods – through the use of a
dedicated, disposable bailer, a peristaltic pump or submersible electric pump.
When sampling with a bailer, a minimum of three well volumes of groundwater are extracted from the well as a means of purging, unless the well is purged to a “dry” state prior to the removal of three volumes of water. Prior to collection of the groundwater sample with the bailer, the water level is allowed to recover to within 80% of the original level measured prior to purging.
When sampling with a peristaltic or submersible electric pump, polyethylene (PE) tubing (or equivalent) is emplaced into the screened section of the monitoring well, and the pump is used to extract water through the tubing. When using the either of these methods, general water quality measurements including but not limited to pH, temperature, dissolved oxygen (DO), oxygen reductive potential (ORP), specific
conductivity and turbidity may be used as methods for determining when an adequate purge of the well has been conducted. When water quality parameters are measured, the resulting data are included in well purge forms or field notes specific to each site and sampling point. Following the purging of three well volumes of groundwater (in the case of the bailed well) or stability of
monitored measurements (in the case of the peristaltic or submersible electric pump), the groundwater sample(s) are introduced directly into sample containers provided by the laboratory to which samples are ultimately submitted for analysis. Any samples requiring chemical preservation are contained in pre-preserved container(s) provided by the laboratory.
Sampling is performed using new, disposable nitrile gloves for each sample location to ensure sample integrity and minimize the potential for cross contamination of samples or field personnel exposure to contaminants. Water Supply Well Sampling

Sampling of water supply wells is accomplished through the collection of a representative sample from an in-line water tap or other point accessible for sampling. Where possible, the sample is collected from a point prior to any filtration or point of entry (POE) system which might be installed on a well. In some cases, samples will be collected from both pre and post-POE locations. Prior to the collection of samples
through an in-place sampling point, the tap or sampling port is cleaned with an Alconox® and deionized
water solution, rinsed with deionized water, and again with an isopropyl alcohol (IPA) rinse. In the case of active supply wells (e.g., a well with a useable well pump with an active power supply), the well pump is energized and allowed to run for a minimum of ten (10) minutes time, after which a sample is
contained in laboratory grade sample containers as described in the previous section. Water quality
parameters may be (but are not necessarily) measured in association with the well purging. Supply wells without active power supplies are not generally sampled, as the well seal cannot be compromised by individuals not certified as a well contractor. However, in the case of a well with no
power supply or pump installed, samples could be obtained through the use of a bailer, peristaltic pump or
electric submersible pump.
Generalized Standard Operating Procedures (Not All Inclusive)

WithersRavenel
Our People. Your Success.
Decontamination Procedures Decontamination procedures employed in the performance of field activities will vary dependent upon
the method(s) of sampling performed at any site, but will generally include the following:
• Remove excess soil/sludge from any sampling equipment as needed, • Wash and scrub the equipment with a phosphate-free detergent such as Alconox® or Liquinox® in a contaminant-free tap water solution. Use a brush to remove particulate matter and surface films as necessary,
• Rinse thoroughly with tap water, • Rinse thoroughly with analyte-free water (deionized water),
 Rinse thoroughly with isopropyl alcohol, • Allow the equipment to air dry,
• Prevent inadvertent contamination during storage and transport (accomplished through storage of equipment in foil or plastic bags/sheeting). In the case of disposable bailers and tubing utilized for the purging and sampling of wells, these items may be decontaminated prior to their disposal. In general, no decontamination of these items is necessary
prior to their use in sampling.