WS-2436_3298_CA_MRP_20230501

 
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 | Charlotte | Greensboro | Lumberton | Pittsboro | Raleigh | Southern Pines | Wilmington 

GROUNDWATER MONITORING REPORT 

Forest Oaks Circle K 
NCDEQ Incident #3298 
UST # WS‐2436  
5324 Liberty Road 
Greensboro, Guilford County, North Carolina 
WithersRavenel Project No. 23‐0307‐K 

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 
May 1, 2023
. 

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 | Charlotte | Greensboro | Lumberton | Pittsboro | Raleigh | Southern Pines | Wilmington 
May 1, 2023 

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:  Ms. Sharon Ghiold 

Re:  Groundwater Monitoring Report  
Forest Oaks Circle K 
5324 Liberty Road 
Greensboro, Guilford County, North Carolina 
Groundwater Incident Number: 3298 
UST Number: WS‐2436 
WR Project Number:  23‐0307‐K 

Ms. Ghiold: 
WithersRavenel, Inc. (WR) has completed this Groundwater Monitoring Report to document a 
groundwater sampling event completed at the site in association with task authorization TA‐01, 
for the above referenced site, approved by the Federal & State Lead Program on March 1, 2023 
under North Carolina Department of Environmental Quality (NCDEQ) Contract # N70522‐C.  

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 (919) 469‐3340. 

Cordially, 
WithersRavenel 

Cory Nobles       Elizabeth A. Allyn, P.G. 
Environmental Geologist II     Environmental Project Geologist II
WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report April 2023 
i 

TABLE OF CONTENTS 

SECTION A. SITE INFORMATION ..................................................................................................................... 1 
SECTION B. EXECUTIVE SUMMARY ................................................................................................................ 3 
SECTION C. SITE HISTORY AND CHARACTERIZATION ............................................................................ 5 
SECTION D. GROUNDWATER SAMPLING – MARCH 2023 ..................................................................... 9 
SECTION E. CONCLUSIONS AND RECOMMENDATIONS ..................................................................... 10 

FIGURES  
Figure 1 General Location Map 
Figure 2 Site Map 
Figure 3 Potential Receptor Map 
Figure 4 Hydraulic Gradient Map – March 7, 2023 
Figure 5 Groundwater Analytical Results Map – March 7, 2023 
Figure 6 Dissolved Benzene Isoconcentration Map – March 7, 2023 

TABLES  
Table B‐1 Site History: UST/AST System & Other Release Information 
Table B‐4 Summary of Groundwater Analytical Results 
Table B‐5A Public and Private Water Supply Well Information 
Table B‐7 Monitoring Well Construction and Groundwater Elevation Information 
Table B‐9 Current & Historical Groundwater Elevations and LNAPL Thickness 

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

WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report May 2023 
1 

SECTION A. SITE INFORMATION  
1. Site Identification 
Date of Report:  May 1, 2023 
Facility I.D.: 00‐0‐0000010522 
Incident No.: 3298 
UST No.: WS‐2436 
Site Risk: High 
Site Rank: H192D 
Land Use Category: Commercial 
Site Name: Forest Oaks Circle K 
Site Location: 5324 Liberty Road 
Nearest City/Town: Greensboro 
County: Guilford 
Description of Geographical Data Point:  Center of Reported Source Area 
Location Method:  Google Earth™ 
Latitude: 35°58'21.44"N 
Longitude: 79°42'38.07"W 
2. Contact Information 
UST Operator: L.P. Vanstory (deceased) 
Address: Not Applicable 
Phone: Not Applicable 

Property Owner: Sunrise Food & Gas LLC 
Address: 507 West 3rd Street, Siler City, NC 27344 
Phone: 919‐742‐6003 

Property Occupant: Sam’s Food Stores 
Address: 5324 Liberty Road, Greensboro, NC 27406 
Phone: 336‐674‐8264 

Consultant/Contractor: WithersRavenel, Inc. 
Address:  115 MacKenan Drive, Cary, NC 27511 
Phone:  919‐469‐3340 

Analytical Laboratory: Waypoint Analytical, Inc.  
State Certification Number: ENV402 
Address: 449 Springbrook Rd., Charlotte, NC 28217 
Phone: 704‐529‐6364 

WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report May 2023 
3 
SECTION B. EXECUTIVE SUMMARY 

1. Summary of Activities Associated with Current TA 

WithersRavenel, Inc. (WR) conducted a groundwater sampling event at the Forest Oaks Circle K 
site located at 5324 Liberty Road in Greensboro, Guilford County, North Carolina in association 
with task authorization TA‐01 under North Carolina Department of Environmental Quality 
(NCDEQ) Contract #N70522‐C.  

2. Soil, Groundwater and LNAPL Assessment Information 

Soils 
No soil samples were obtained in association with the monitoring activities conducted by WR 
during the March 2023 event. In July 1992, soil samples documented the presence of volatile total 
petroleum hydrocarbons at concentrations that exceeded the NCDEQ Action Levels. Soil sampling 
conducted in July 1992, prior to the UST closure activities, indicated a maximum concentration of 
total petroleum hydrocarbons (TPH) – gasoline range organics (GRO) of 2,380 mg/kg.  Soil samples 
were not collected during the UST removal and over‐excavation activities.  Risk based soil samples 
were collected from MW‐1 (B‐2) and B‐1.  Soils samples identified several petroleum compounds 
above the Soil‐to‐Groundwater Maximum Soil Contaminant Concentrations (MSCCs). It should be 
noted, the soil samples were collected from below the water table at depths ranging from 10 to 
14 ft bgs.  

Groundwater  
WR collected samples from groundwater monitoring wells MW‐1 through MW‐5 and water 
supply well WSW‐2 on March 7, 2023. The residence at water supply well WSW‐12 appeared to 
be vacant and the spigot did not produce water. The groundwater samples were submitted for 
laboratory analysis of volatile organic compounds (VOCs) by SM 6200B plus oxygenates. 

Laboratory analysis of the groundwater samples collected from monitoring wells MW‐1, MW‐2, 
and MW‐3 detected one or more petroleum compounds above the North Carolina 2L 
Groundwater Quality Standards (2L Standards). No analytes were present above the Gross 
Contamination Levels for Groundwater (GCLs). 

No analytes were present in water supply well WSW‐2 above the laboratory detection limits. 

Liquid Non‐Aqueous Phase Liquid 
Light non‐aqueous phase liquid (LNAPL) has not historically been detected in the monitoring wells 
associated with the site.  However, LNAPL was reported in the excavation at the time of the UST 
closures.  

WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report May 2023 
4 
3.       Receptor Information 

A receptor survey update was conducted as part of the 2013 groundwater monitoring activities 
performed by Crawford Environmental Services, Inc. (CES).  According to the report associated 
with the update, fourteen properties within 1,500 feet of the release area were identified as having 
water supply wells. Municipal water is available to properties along Liberty Road. 
According to the report, the closest surface water to the subject property is an intermittent creek 
approximately 300 feet to the southeast of the subject property.   

4. Remediation Activities 

Based on WR’s review of historical files available for the site, the following remedial activities have 
been completed at the site: 
 Remedial actions performed at the site to date include the removal of 8,000 gal and 6,000 
gal UST systems in November 1993, followed by excavation of impacted soils totaling 238 
tons during 1994.  Two additional USTs were discovered during the soil excavation activities, 
both of which were removed on March 28, 1994.   
 In June 2012, S&ME conducted a MMPE event at the site utilizing MW‐1 and MW‐3. During 
the MMPE event, 1,952 gallons of VOC‐impacted water was recovered and transported 
offsite for disposal. Based on mass removal calculations, 962.24 pounds of VOCs (156.41 
gallons) were removed as vapor during the event.   
 In February 2022, WR conducted a MMPE event at the site utilizing MW‐1 and MW‐3. 
During the MMPE event, 2,668 gallons of VOC‐impacted water was recovered and 
transported offsite for disposal. Based on mass removal calculations, 259.11 pounds of VOCs 
(42.12 gallons) were removed as vapor during the event.   

5. Recommendations 
Based on the results of the activities conducted at the site in association with this TA, WR 
recommends the following: 
 If sufficient funding is available, WR recommends conducting a Remedial Design 
Characterization study. 

WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report May 2023 
5 
SECTION C. SITE HISTORY AND CHARACTERIZATION 

The following information summarizes the site history and characterization.   

1. UST Information 
The locations of the former UST system, onsite improvements, and the present onsite monitoring 
wells are depicted on Figure 2.  The former USTs were centrally located on the subject property 
along the northeast property boundary.  According to the historical information on the incident, 
two previously known USTs and two orphan USTs were closed by removal in 1993 and 1994, 
respectively.   WR is not aware of any aboveground storage tank (ASTs) located on the subject 
site.  Table B‐1 summarizes information regarding USTs that were formerly utilized on the 
property and includes information about currently operational USTs on the site.   

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: 
 Dissolved petroleum hydrocarbons were detected in an on‐site water supply well in 1986. This 
well has reportedly been abandoned. 
 Analysis of soil samples collected from the site in July 1992 documented the presence of 
volatile total petroleum hydrocarbons at concentrations that exceeded the State Action Levels. 
 In November 1993, DAACO Pump and Tank Contractors (DAACO) removed an 8,000‐gallon 
and a 6,000‐gallon UST. 
 LNAPL was noted in the excavations after each UST was removed. No UST closure samples 
were collected during the UST removal activities. The overburden and sideburden were placed 
back into the UST excavation. 
 In 1994, DAACO returned to the site and removed approximately 238 tons of petroleum 
contaminated soil, which they disposed of off‐site at a permitted facility. 
o While excavating contaminated soil, two additional gasoline USTs were discovered ‐ 
one 1,000‐gallon and one 1,500‐gallon UST. 
o The final excavation reportedly measured 60 ft by 25 ft by 6 ft deep. 
 In August of 2009, S&ME completed a Limited Site Assessment (LSA) for the incident during 
which a groundwater monitoring well (MW‐1) was installed within the former UST pit and a 
receptor survey was conducted. 
o Risk based soil samples were collected from MW‐1 (B‐2) and B‐1.  Soils samples 
identified several petroleum compounds in excess of the Soil‐to‐Groundwater MSCCs; 
it should be noted, the soil samples were collected from below the water table at 
depths ranging from 10 to 14 ft bgs. 
o The receptor survey identified eight water supply wells within 1,000 feet of the source 
area, two of which were within 500 feet of the source area. 
WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report May 2023 
6 
o Analytical results for the groundwater sample from MW‐1 indicated the presence of 
one or more petroleum constituents at concentrations above 2L Standards and the 
GCL. 
 January 2010 – A Groundwater Monitoring Report completed by S&ME documented the 
installation of three additional monitoring wells (MW‐2, MW‐3, and MW‐4). 
 July 2012 – Analytical results for water samples collected in July 2012 from WSW‐2 identified 
1,2 DCA at a concentration of 0.56 ug/L, which is above its 2L standard.  Analytical results 
during the June 2013 sampling event also identified the presence of 1,2 DCA in the water 
sample taken from WSW‐2, however, the concentration was below the reporting detection 
limits and was estimated.  In addition, results from the October 2011, July 2012, and June 
2013 sampling events identified the presence of di‐isopropyl ether at concentrations that were 
below its 2L standard.  The water supply well is located at 5607 Hagan Stone Park Road and 
is approximately 350 feet southeast of the release area. 
 May 2012 ‐ Off‐site monitoring well MW‐5 was installed. 
 June 2012 ‐ A MMPE event was conducted using MW‐1 and MW‐3 as extraction points. 
During the MMPE event, 1,952 gallons of VOC‐impacted water was recovered and 
transported offsite for disposal. Based on mass removal calculations, 962.24 pounds of VOCs 
(156.41 gallons) were removed as vapor during the event.   
 July 2014 – WR conducted a monitoring event at the site which included the collection of 
groundwater samples from wells MW‐1, MW‐2, MW‐3, MW‐4 and MW‐5, and supply wells 
WSW‐1, WSW‐2, WSW‐4, WSW‐7, and WSW‐12.  Analytical data for groundwater samples 
obtained from the monitoring wells on the site indicated a benzene concentration above the 
GCL in MW‐1 and one or more targeted compounds concentrations above the 2L Standards 
in MW‐1, MW‐2, and MW‐3.   Data for supply well samples did not indicate the presence of 
targeted compounds by SM6200B, except for IPE, reported in WSW‐2 at a concentration of 
1.1 µg/L, below the 2L Standard.   
 April 2015 – WR completed groundwater and supply well sampling activities at the site.  
Analytical data for groundwater samples obtained from the monitoring wells on the site 
indicated a benzene concentration above the GCL in MW‐1 and one or more targeted 
compounds concentrations above the 2L Standards in MW‐1, MW‐2, and MW‐3.   Tert‐amyl 
methyl ether (TAME) and tert‐amyl alcohol (TAA) were reported in the sample obtained from 
MW‐2 at levels of 1.1 and 5,800 µg/L, respectively.  The level of TAA in the sample exceeded 
the 2L Standard for the compound, while the level of TAME did not exceed its 2L Standard.  
Analytical data for samples obtained from supply wells WSW‐2 and WSW‐11 did not show 
the presence of targeted compounds at levels above the MDL for SM6200B.   
 May 2016 – WR performed groundwater and supply well sampling at the location. Analytical 
data for groundwater samples obtained from the monitoring wells on the site indicated a 
benzene concentration above the GCL in MW‐1 and one or more targeted compounds 
concentrations above the 2L Standards in MW‐1, MW‐2, and MW‐3.  Lab results for samples 
collected from supply wells WSW‐2, WSW‐11 and WSW‐12 showed IPE present in the sample 
from WSW‐2 at a concentration of 1.02 µg/L, a level which falls beneath the 2L Standard for 
the compound.   
WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report May 2023 
7 
 January 2018 – WR completed an Underground Injection Control (UIC) Permit application to 
allow for the injection of EnviroClean surfactant to enhance degradation of contaminants at 
the location. The injection was not conducted. 
 May 2018 – WR performed a limited groundwater sampling event at the site, including the 
sampling of wells MW‐1, MW‐3, and MW‐4.  Analytical data for groundwater samples 
obtained from the monitoring wells on the site indicated a benzene concentration above the 
GCL in MW‐1 and one or more targeted compounds concentrations above the 2L Standards 
in MW‐1 and MW‐3.   
 August 2019 ‐ WR performed a groundwater sampling event at the site, including the sampling 
of wells MW‐1, MW‐2, MW‐3 and MW‐4 and supply wells WSW‐2 and WSW‐12.  Analytical 
data for groundwater samples obtained from the monitoring wells on the site indicated a 
benzene concentration above the GCL in MW‐1 and one or more targeted compounds 
concentrations above the 2L Standards in MW‐1, MW‐2, and MW‐3.  Acetone was reported 
in the sample from WSW‐12 at a level below the NC 2L Standard.  No targeted chemicals were 
reported above the laboratory MDL in the sample obtained from WSW‐2. 
 November 2020 ‐ WR performed a groundwater sampling event including the sampling of 
MW‐1 through MW‐5 and water supply wells WSW‐2 and WSW‐12. Laboratory results 
indicated benzene in the sample from MW‐1 at a level exceeding the GCL. One or more 
targeted compounds were identified in excess of the 2L Standards in wells MW‐1, MW‐2 and 
MW‐3. No targeted compounds were reported in the samples obtained from wells MW‐4 or 
MW‐5 at concentrations above the laboratory MDL.  WSW‐2 contained IPE in excess of the 
laboratory MDL, but below the 2L Standard. No compounds were detected in WSW‐12. 
 February / March 2022 – WR performed an MMPE event that removed 2,668 gallons of 
impacted groundwater and 42.12 gallons of VOCs were removed as vapor. WR also performed 
a groundwater sampling event for MW‐1 through MW‐5 as well as water supply wells WSW‐
2 and WSW‐12. Laboratory results indicated that MW‐1, MW‐2, and MW‐3 contained 
compounds at concentrations above the 2L Standard. MW‐3 contained benzene at a 
concentration above the GCL. Di‐isopropyl ether was detected in WSW‐2 at a concentration 
above the laboratory detection limits, but below the NC 2L Standard.  
 Ongoing – WR is attempting to connect the property located at 5607 Hagan Court, 
Greensboro, NC to the City of Greensboro municipal water supply.  

3.  Site Characteristics 
The property is located at 5324 Liberty Road in Greensboro, Guilford County, North Carolina 
(Figure 1) and operates as a convenient store with retail petroleum sales (Figure 2).  The Guilford 
County Parcel ID No. for the property is 7880997601.  The surrounding area is moderately 
developed with a mixture of commercial and residential properties.   

WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report May 2023 
8 
4.       Information on Receptors/Potential Receptors 
A receptor survey update was conducted as part of the 2013 groundwater monitoring activities 
performed by CES.  According to the report associated with the update, fourteen properties within 
1,500 feet of the release area were identified as having water supply wells. Municipal water is 
available to properties along Liberty Road.  The owners of water supply wells WSW‐2 and WSW‐
12 have agreed to connect to municipal water. A water meter has been installed at the WSW‐12 
location. However, it has not been connected to the municipal water line. The residence at WSW‐
12 appears vacant. In March 2023, an annexation agreement was submitted to the City of 
Greensboro for the property containing WSW‐2.  
According to the report, the closest surface water to the subject property is an intermittent creek 
approximately 300 feet to the southeast of the subject property. 

5.       Regional and Site Geology and Hydrology 
The Geologic Map of North Carolina depicts the site is located in the metamorphosed granitic 
rocks of the intrusive rocks of the Carolina Slate Belt. The Geologic Map of North Carolina 
indicates the site is underlain by megacrystic, well foliated, metamorphosed granitic rock which 
locally contains hornblende and is comprised of the Chapel Hill, Chatham, Farrington, Meadow 
Flats, Mt. Moriah, Parks Crossroads plutons, and Roxboro and Vance County suites. 

According to the United States Department of Agricultural (USDA) Natural Resources 
Conservation Service (NRCS) Web Soil Survey, the source area is underlain by Enon fine sandy 
loam (2 to 6 percent slopes).  Enon fine sandy loam is well drained, found on summits of interfluves, 
and the parent material is saprolite derived from diorite and/or gabbro and/or diabase and/or 
gneiss. Boring log and excavation records from the site indicate that the general lithology of the 
site soils consisted of micaceous silts and clayey silts.   

WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report May 2023 
9 
SECTION D. GROUNDWATER SAMPLING – MARCH 2023 

WR mobilized to the site on March 7, 2023, to sample the five Type II groundwater monitoring 
wells associated with the site and water supply wells WSW‐2 and WSW‐12. The locations of 
monitoring wells MW‐1 through MW‐5 are shown on Figure 2. The locations of water supply wells 
are shown on Figure 3. 
Monitoring Well Sampling Activities 
Prior to purging activities, groundwater levels were gauged with a decontaminated electronic 
water level meter. Groundwater levels measured within the monitoring wells ranged from 3.03 
feet below Top of Casing (TOC) in monitoring well MW‐5 to 7.25 feet below TOC in monitoring 
well MW‐2. Groundwater elevations were utilized to generate a groundwater flow map at the site, 
based on the March 2023 groundwater levels (Figure 4).  Groundwater elevation data indicated 
that groundwater predominantly flows to the west and southeast across the site. The monitoring 
well screens were submerged in monitoring wells MW‐1, MW‐3, MW‐4, and MW‐5. Groundwater 
elevations and well construction information is summarized in Table B‐7. Historical groundwater 
elevation data is summarized in Table B‐9. 
After gauging, each monitoring well was purged a minimum of three volumes of groundwater using 
dedicated bailers.  All groundwater samples were then placed directly into laboratory‐provided 
containers, placed on ice, and under property chain‐of‐custody procedures, transported to 
Waypoint Analytical, Inc. located in Charlotte, NC, to be analyzed for VOCs by SM6200B plus 
oxygenates. 
Water Supply Well Sampling Activities 
WR mobilized to the site on March 7, 2023, for the purposes of sampling supply wells WSW‐2 
and WSW‐12. The property where water supply well WSW‐12 is located was vacant at the time 
of the groundwater sampling and there was no power to the well. Therefore, this well was not 
sampled. For sampling, each of the wells was purged by opening their respective sampling points 
allowing the well pump(s) to run continuously for a minimum of 10‐minutes. After sufficient 
purging of the wells, each was sampled by decanting well water into pre‐preserved laboratory 
provided sample containers.   
Samples collected from WSW‐2 and a field blank were submitted to Waypoint for testing by SM 
6200B plus oxygenates.    
Laboratory Results 
Laboratory analysis of the groundwater samples collected from monitoring wells MW‐1, MW‐2, 
and MW‐3 detected one or more petroleum compounds above the 2L Standards. No analytes 
were present above the GCLs. 

No analytes were present in water supply well WSW‐2 above the laboratory detection limits. 

A summary of the groundwater analytical results is presented in Table B‐4. Water supply well 
sampling results are shown on Figure 3 and monitoring well sampling results are shown on Figure 
5. A benzene isoconcentration map is included as Figure 6. A photographic record and the field 
notes are included in Appendix A.  A copy of the laboratory analytical report and chain‐of‐custody 
is included in Appendix B.  WR’s standard operating procedures are provided in Appendix C. 
WithersRavenel
Our People. Your Success. 

Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23‐0307‐K 
Groundwater Monitoring Report May 2023 
10 

SECTION E. CONCLUSIONS AND RECOMMENDATIONS 

This report documents the results of field activities conducted at the site under TA‐01, which 
included a groundwater sampling event. Conclusions based on observations, analytical data and 
research relating to the release at the site combined with historical information include the 
following: 
 Fourteen properties within 1,500 feet of the release area were identified as having water 
supply wells. Municipal water is available to properties along Liberty Road.   
 The groundwater remedial goals are the 2L Standards based on the information obtained 
during the 2013 receptor survey. Current groundwater concentrations exceed the 2L 
Standards in monitoring wells MW‐1, MW‐2, and MW‐3. 
 The site is currently in use as a retail petroleum station and convenience store. 
Based on the results of assessment and monitoring activities conducted at the site in association 
with this TA, WR recommends the following: 
 If sufficient funding is available, WR recommends conducting a Remedial Design 
Characterization study. 

WithersRavenel
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FIGURES
EAA
MJ
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1
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
GENERAL LOCATION MAP
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=500 '
GRAPHIC SCALE
1 inch = 500 ft.
0 500250 1000
FOREST OAKS CIRCLE K
INCIDENT # 3298
5324 LIBERTY ROAD
GREENSBORO, GUILFORD COUNTY, NC
SUBJECT SITE
±0.81 ACRE
LIBERTY RDHAGAN STONE PARK RDMW-2MW-1MW-5MW-4MW-3EAA
MJ
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2
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
FOREST OAKS CIRCLE K
INCIDENT # 3298
5324 LIBERTY ROAD
GREENSBORO, GUILFORD COUNTY, NC
SITE MAPWithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=40 'LEGENDTYPE II MONITORING WELL LOCATIONNOTES:1.2022 AERIAL OBTAINED FROM NC ONE MAP.GRAPHIC SCALE1 inch = 40 ft.0402080
1387119564131410122EAA
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SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
FOREST OAKS CIRCLE K
INCIDENT # 3298
5324 LIBERTY ROAD
GREENSBORO, GUILFORD COUNTY, NC
POTENTIAL
RECEPTOR MAP
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=300 'LEGENDSUPPLY WELL LOCATION(SEE CORRESPONDING INFORMATION IN TABLE B-5)NOTES:1. 2022 AERIAL OBTAINED FROM NC ONE MAP.GRAPHIC SCALE1 inch = 300 ft.03001506004
LIBERTY RDHAGAN STONE PARK RDMW-2MW-1MW-5MW-4(91.37)(93.50)(92.58)(93.87)(93.05)9
3
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93.5
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0MW-39
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EAA
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SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
FOREST OAKS CIRCLE K
INCIDENT # 3298
5324 LIBERTY ROAD
GREENSBORO, GUILFORD COUNTY, NC
HYDRAULIC GRADIENT MAP (ft)
MARCH 7, 2023
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=30 'LEGENDTYPE II MONITORING WELL LOCATIONGROUNDWATER ELEVATIONIMPLIED GROUNDWATER ELEVATIONINFERRED GROUNDWATER FLOWNOTES:1.2022 AERIAL OBTAINED FROM NC ONE MAP.GRAPHIC SCALE1 inch = 30 ft.0301560(93.05)93
LIBERTY RDHAGAN STONE PARK RDMW-2MW-1MW-5MW-4MW-3EAA
MJ
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SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
FOREST OAKS CIRCLE K
INCIDENT # 3298
5324 LIBERTY ROAD
GREENSBORO, GUILFORD COUNTY, NC
GROUNDWATER
ANALYTICAL RESULTS MAP
- MARCH 7, 2023
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=40 'LEGENDTYPE II MONITORING WELL LOCATIONNOTES:1.2022 AERIAL OBTAINED FROM NC ONE MAP.GRAPHIC SCALE1 inch = 40 ft.0402080
LIBERTY RDHAGAN STONE PARK RDMW-2MW-1MW-5MW-4(3,230)(<0.500)(<0.500)(3,090)(<0.500 )1.01,0001.01,0001.0ESTIMATED EXTENT OFBENZENE AT LEVELSEXCEEDING GCLMW-3EAA
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SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
FOREST OAKS CIRCLE K
INCIDENT # 3298
5324 LIBERTY ROAD
GREENSBORO, GUILFORD COUNTY, NC
DISSOLVED BENZENE
ISOCONCENTRATION MAP (ug/L)
MARCH 7, 2023
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com
1"=30 'LEGENDTYPE II MONITORING WELL LOCATIONGROUNDWATER BENZENE CONCENTRATIONIMPLIED GROUNDWATER BENZENE CONCENTRATIONESTIMATED EXTENT OF BENZENE AT LEVELS EXCEEDING 2L STANDARDNOTES:1.2022 AERIAL OBTAINED FROM NC ONE MAP.GRAPHIC SCALE1 inch = 30 ft.0301560(3,090)1,000
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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 N/A 8,000 Steel ~8.0 x 21.4 N/A 1979Permanently Closed by Removal (November 1993)Y2 Gasoline N/A 6,000 Steel ~8.0 x 16 N/A 1979Permanently Closed by Removal (November 1993)Y3 Gasoline N/A 1,500 Steel Unknown N/A UnknownPermanently Closed by Removal (March 1994)Y4 Gasoline N/A 1,000 Steel Unknown N/A UnknownPermanently Closed by Removal (March 1994)Y5 Gasoline N/A 10,000Single Wall SteelUnknownSingle Wall Fiberglass Reinforced Plastic Piping, Pressurized Delivery System3/1/1995 Currently Operational N6 Gasoline N/A 10,000Single Wall SteelUnknownSingle Wall Fiberglass Reinforced Plastic Piping, Pressurized Delivery System3/1/1995 Currently Operational N7 Gasoline N/A 10,000Single Wall SteelUnknownSingle Wall Fiberglass Reinforced Plastic Piping, Pressurized Delivery System3/1/1995 Currently Operational NAST IDNumberCurrent/LastContentsPreviousContentsCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofASTWas release associated with AST System? (Y/N)N/A N/A N/A N/A N/A N/A N/A N/A N/A N/AIncidentNumberMaterialReleasedDateofRelease3298 Gasoline UnknownNotes:1)2)Greensboro, Guilford County, NCDescription of ReleaseTable B‐1Site History:  UST/AST System & Other Release InformationFOREST OAKS CIRCLE KUST release was detected through laboratory analysis of soil samples collected in August 1992.5324 Liberty RoadIncident Number: 3298Tank information for USTs 5, 6 and 7 from NCDEQ‐DWM's "NC UST Facility Operating Permits", and "tblALLTANKS" , both dated January 2015.  These USTs are operated under NCDEQ‐DWM UST Section Facility ID # 00‐2‐0000010522.WR is not aware of any ASTs associated with the subject site.Page 1 of 1
ACETONEBENZENEN-BUTYLBENZENESEC-BUTYLBENZENETERT-BUTYLBENZENECARBON TETRACHLORIDECHLOROMETHANE1,2-DICHLOROETHANEETHANOLETHYLBENZENEDI-ISOPROPYL ETHERISOPROPYLBENZENEP-ISOPROPYLTOLUENE2-BUTANONE (MEK)METHYL TERT-BUTYL ETHER4-METHYL-2-PENTANONE (MIBK)NAPHTHALENEN-PROPYLBENZENESTYRENETERT-AMYL ALCOHOLTERT-AMYL METHYL ETHERTERT-BUTYL ALCOHOLETHYL TERT-BUTYL ETHERTERT-BUTYL FORMATETOLUENE1,2,4-TRIMETHYLBENZENE1,3,5-TRIMETHYLBENZENETOTAL XYLENE67-64-1 71-43-2 104-51-8 135-98-8 98-06-6 56-23-5 74-87-3 107-06-2 64-17-5 100-41-4 108-20-3 98-82-8 99-87-6 78-93-3 1634-04-4 108-10-1 91-20-3 103-65-1 100-42-5 75-85-4 994-05-8 75-65-0 637-92-3 762-75-4 108-88-3 95-63-6 108-67-8 NA
7/13/2009 NR 12,000 ND ND ND NR NR 49.9 NR 3,050 4,180 68.8 NR NR 804 NR 798 188 169 NR NR NR NR NR 11,600 1,290 326 10540
6/28/2010 ND 15,000 56 ND ND NR NR 56 NR 2,400 2,300 72 NR 28 J 310 NR 910 230 140 NR NR NR NR NR 20,000 1,900 540 11000
8/16/2011 ND 14,000 ND ND ND NR NR 44 NR 3,200 2,200 99 NR ND 280 NR 940 180 120 NR NR NR NR NR 15,000 1,200 360 12000
6/25-29/2012
7/5/2012 NR 9,100 14 7 ND NR NR 16 NR 1,100 1,100 ND NR NR 140 NR 410 ND 20 NR NR NR NR NR 4,800 320 100 2500
6/19/2013 ND 5,210 ND ND ND NR NR 51.7 NR 1,510 920 38.3 NR NR 81.7 NR 601 103 90.7 NR NR NR NR NR 9,980 1,260 342 8970
7/22/2014 <12000 7,800 <250 <250 <250 <250 <620 <250 NA 2,000 1,000 <250 <250 <2500 <250 <2500 <1200 <250 <250 NA NA NA NA NA 8,800 710 <250 7900
4/29/2015 <25000 7,000 <500 <500 <500 <500 <1200 <500 <50000 2,300 770 <500 <500 <5000 <500 <5000 <2500 <500 <500 <25000 <500 <2500 <500 <10000 11,000 960 <500 8800
5/11/2016 <5000 8,470 <100 <100 <100 <100 <250 <100 <10000 2,200 1,110 <100 <100 <1000 <100 <1000 677 121 <100 <5000 <100 <500 <100 <2000 9,710 1,290 320 9860
5/14/2018 <1000 5,520 <20.0 <20.0 <20.0 <20.0 <50.0 <20.0 <2000 2,770 594 NR NR <200 44.4 <200 843 243 33 NR <20 125 <20 NR 9,820 1,730 483 11000
8/14/2019 <3.1 7,200 23 11 <0.88 <1.1 <0.79 18 <270 3,300 500 78 7.4 <2.4 35 <0.78 2500 220 38 <7.2 <100 300 <0.59 <2.5 10,000 2,600 520 15000
11/13/2020 <31 6,700 <7.6 <7.6 <8.8 <11 <7.9 <6.6 <2700 3,200 420 73 <8.9 <24 <100 <7.8 900 210 <50 <72 <1000 <1000 <5.9 <25 9,100 1,800 450 13000
2/14-18/2022
3/22/2022 <1000 3,990 <50.0 <50.0 <200 <50.0 <50.0 <50.0 <20000 2,860 308 120 <50.0 <500 <100 <100 609 255 <50.0 1090 <1000 <1000 <1000 <1000 3,760 1,250 402 6890
3/7/2023 <100 3,090 11 5.93 <20.0 <5.00 116 <5.00 <2000 2,510 227 59.7 5.25 <50.0 16.6 <10.0 752 153 10.8 <1000 <100 <100 <100 <100 1,400 701 200 4,680
7/13/2009 NR 1.5 ND 2 1.8 NR NR 0.81 NR ND 165 0.89 NR NR 2.1 NR ND ND ND NR NR NR NR NR ND ND ND ND
6/28/2010 ND 4 ND 4 2.8 NR NR 0.65 NR ND 140 1 NR ND 1.8 NR ND ND ND NR NR NR NR NR ND ND ND ND
8/16/2011 2.6 J 6.6 ND 2.6 2 NR NR 0.51 NR ND 160 2.2 NR ND 2.6 NR ND 1.1 ND NR NR NR NR NR ND ND ND ND
7/5/2012 5.4 J 3.7 ND 1.8 1.7 NR NR 0.65 NR ND 150 ND NR 3.2 J 2.8 NR ND NR ND NR NR NR NR NR ND ND ND ND
6/19/2013 ND 0.26 J ND 0.78 0.62 NR NR ND NR ND 12.8 0.26 J NR NR 0.27 J ND ND ND NR NR NR NR NR ND 0.28 J ND ND
7/22/2014 <50 4.6 <1 1.2 <1 <1 <2.5 <1 NA <1 130 <1 <1 <10 1.5 <10 <5 <1 <1 NA NA NA NA NA <5 <1 <1 <2
4/29/2015 <50 3 <1 2.1 1.7 <1 <2.5 <1 <100 <1 280 <1 <1 <10 6.8 <10 <5 <1 <1 5,800 1.1 <500 <1 <20 <5 <1 <1 <2
5/11/2016 <50 <1 <1 <1 <1 <1 <2.5 <1 <100 <1 108 <1 <1 <10 2.25 <10 <5 <1 <1 <1250 <1 156 <1 <500 <5 <1 <1 <2
8/14/2019 <0.31 16 <0.5 7.7 3.2 <0.11 <0.079 <0.066 <27 <0.5 120 1.2 <0.089 <0.24 1.8 <0.078 <0.19 0.56 <0.047 <0.72 <0.10 520 <0.059 <0.25 <0.044 <0.054 <0.076 <0.15
11/13/2020 <10 3.4 <0.076 2.8 1.8 <0.11 <0.079 <0.066 <27 <0.061 130 <0.5 <0.089 <0.24 3.3 <0.078 <1 <0.087 <0.047 <0.72 <10 470 <0.059 <0.25 <0.044 <0.054 <0.076 <0.15
3/22/2022 <10.0 2.09 <0.500 1.14 <2.00 <0.500 <0.500 <0.500 <200 <0.500 171 <0.500 <0.500 <5.00 6.85 <1.00 <1.00 <0.500 <0.500 5800 <10.0 525 <10.0 <10.0 0.618 <0.500 <0.500 <0.500
3/7/2023 <10.0 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <200 <0.500 47.7 <0.500 <0.500 <5.00 3 <1.00 <1.00 <0.500 <0.500 <1000 <10.0 64.5 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500
7/13/2009 NR 14,400 ND ND ND NR NR ND NR 2,680 728 ND NR NR ND NR 1,160 247 ND NR NR NR NR NR 32,200 2,070 524 13,630
6/28/2010 ND 8,200 120 ND ND NR NR ND NR 3,500 220 110 NR ND ND NR 1,400 380 310 NR NR NR NR NR 23,000 3,000 780 17,000
8/16/2011 ND 11,000 ND ND ND NR NR ND NR 2,900 240 180 NR ND ND NR 1,300 300 150 NR NR NR NR NR 25,000 1,800 500 13,000
6/25-29/2012
7/5/2012 ND 10,000 430 68 ND NR NR ND NR 5,000 350 350 NR ND ND NR 4,100 1,300 1,100 NR NR NR NR NR 30,000 4,600 1,200 25,000
6/19/2013 ND 3,540 ND ND ND NR NR ND NR 2,290 89.9 96.5 NR NR ND NR 1,040 302 32.1 NR NR NR NR NR 5,440 2,380 576 8,520
7/22/2014 <12000 3,700 <250 <250 <250 <250 <620 <250 NA 1,700 <250 <250 <250 <2500 <250 <2500 <1200 <250 <250 NA NA NA NA NA 5,500 1,200 300 7,700
4/29/2015 <10000 3,400 <200 <200 <200 <200 <500 <200 <20000 2,000 <200 <200 <200 <2000 <200 <2000 <1000 <200 <200 <10000 <200 <1000 <200 <4000 5,100 1,200 300 7,300
5/11/2016 <12500 3,260 <250 <250 <250 <250 <625 <250 <25000 1,760 <250 <250 <250 <2500 <250 <2500 <1250 <250 <250 <12500 <250 <1250 <250 <5000 3,550 2,080 545 8,940
5/14/2018 <5000 3,270 <100 <100 <100 <100 <250 <100 <10000 1,870 <100 NR NR <1000 <100 <1000 808 227 <100 NR <100 <500 <100 NR 4,240 1,510 366 7,010
8/14/2019 <3.1 3,200 240 73 <0.88 <1.1 <0.79 <0.66 <270 2,600 42 270 53 <2.4 <0.42 <0.78 1,900 870 <0.47 <7.2 <1.0 <6.4 <0.59 <2.5 1,600 2,400 620 8,500
11/13/2020 <3.1 4,100 52 18 <0.88 <1.1 <0.79 <0.66 <270 2,400 68 85 13 <2.4 <10 <10 950 270 18 <7.2 <1.0 <6.4 <0.59 <2.5 3,100 2,000 260 7,200
2/14-18/2022
3/22/2022 <1000 5,310 431 144 <200 <50.0 <50.0 <50.0 <20000 6190 71.2 440 111 <500 <100 <100 1520 1700 277 <1000 <1000 <1000 <1000 <1000 14100 8600 2860 25800
3/7/2023 <1000 3,230 616 170 <200 <50.0 <50.0 <50.0 <20000 3,900 76.9 340 98.1 <500 <100 389 2,280 1,340 <50.0 <1000 <1000 <1000 <1000 <1000 3,750 7,170 2,270 13,200
6,000 1 70 70 70 NL 3 0.4 4,000 600 70 70 25 4,000 20 100 6 70 70 40 128 10 47 40 600 400 400 500
6,000,000 5,000 5,900 8,800 14,750 NL 3,000 400 4,000,000 80,000 70,000 30,500 11,700 4,000,000 20,000 100,000 6,000 26,100 70,000 40,000 128,000 10,000 47,000 40,000 260,000 28,500 24,100 50,000
Notes:
1)NL = Not Listed2)NA = Compound Not Analyzed for by Laboratory
3)NR = Compound Not Reported By Previous Consultants, or not included in analytical method suite4)ND = Compound Not Detected.
5)Result = Result Exceeds Laboratory Detection Limits
Result = Result Exceeds 2L Standard
Result = Result Exceeds GCL Value
NC 2L Standard - North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L
GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater
All results provided in ug/L (micrograms per liter) or parts per billion
SampleID DateCollected
MMPE Event
MMPE Event
MW-3
Greensboro, Guilford County, NC
Compounds analyzed 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
MW-1
SM6200B / EPA-8260 - Volatile Organic CompoundsAnalytical Method
NC 2L Standard
GCLs for Groundwater
J = Compound detected above laboratory detection limite but below the laboratory reporting limit.
MMPE Event
MW-2
MMPE Event
TABLE B-4SUMMARY OF GROUNDWATER ANALYTICAL RESULTS
FOREST OAKS CIRCLE K
Incident Number: 3298
5324 Liberty Road
Page 1 of 2
ACETONEBENZENEN-BUTYLBENZENESEC-BUTYLBENZENETERT-BUTYLBENZENECARBON TETRACHLORIDECHLOROMETHANE1,2-DICHLOROETHANEETHANOLETHYLBENZENEDI-ISOPROPYL ETHERISOPROPYLBENZENEP-ISOPROPYLTOLUENE2-BUTANONE (MEK)METHYL TERT-BUTYL ETHER4-METHYL-2-PENTANONE (MIBK)NAPHTHALENEN-PROPYLBENZENESTYRENETERT-AMYL ALCOHOLTERT-AMYL METHYL ETHERTERT-BUTYL ALCOHOLETHYL TERT-BUTYL ETHERTERT-BUTYL FORMATETOLUENE1,2,4-TRIMETHYLBENZENE1,3,5-TRIMETHYLBENZENETOTAL XYLENE67-64-1 71-43-2 104-51-8 135-98-8 98-06-6 56-23-5 74-87-3 107-06-2 64-17-5 100-41-4 108-20-3 98-82-8 99-87-6 78-93-3 1634-04-4 108-10-1 91-20-3 103-65-1 100-42-5 75-85-4 994-05-8 75-65-0 637-92-3 762-75-4 108-88-3 95-63-6 108-67-8 NA
SampleID DateCollected
Greensboro, Guilford County, NC
SM6200B / EPA-8260 - Volatile Organic CompoundsAnalytical Method
TABLE B-4SUMMARY OF GROUNDWATER ANALYTICAL RESULTS
FOREST OAKS CIRCLE K
Incident Number: 3298
5324 Liberty Road
7/13/2009 NR ND ND ND ND NR NR ND NR ND ND ND NR NR ND NR ND ND ND NR NR NR NR NR ND ND ND ND
6/28/2010 NR ND ND ND ND NR NR ND NR ND ND ND NR ND ND NR ND ND ND NR NR NR NR NR ND ND ND ND
8/16/2011 NR ND ND ND ND NR NR ND NR ND ND ND NR ND ND NR ND ND ND NR NR NR NR NR ND ND ND ND
7/5/2012 NR ND ND ND ND NR NR ND NR ND ND ND NR ND ND NR ND NR ND NR NR NR NR NR ND ND ND ND
6/19/2013 NR ND ND ND ND NR NR ND NR 0.37 J ND ND NR ND ND NR 2.4 ND ND NR NR NR NR NR 0.41 J 2.4 0.9 1.97
7/22/2014 <50 <1 <1 <1 <1 <1 <2.5 <1 NA <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 NA NA NA NA NA <5 <1 <1 <2
4/29/2015 <50 <1 <1 <1 <1 <1 <2.5 <1 <100 <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 <50 <1 <5 <1 <20 <5 <1 <1 <2
5/11/2016
5/14/2018 <50 <1 <1.00 <1.00 <1.00 <1.00 <2.50 <1.00 <100 <1 <10 NR NR 29.9 <1 <10.0 <5 <1 <1.00 NR <1 <5 <1 NR <1 <1.00 <1.00 <38/14/2019 <10 <0.048 <0.076 <0.076 <0.088 <0.11 <0.079 <0.066 <27 <0.061 <0.050 <0.054 <0.089 <0.24 <0.042 <0.078 <0.19 <0.087 <0.047 <0.72 <0.10 <0.64 <0.059 <0.25 <0.044 <0.054 <0.076 <0.15
11/13/2020 <0.31 <0.048 <0.076 <0.076 <0.088 <0.11 <0.079 <0.066 <27 <0.061 <0.050 <0.054 <0.089 <0.24 <0.042 <0.078 <0.19 <0.087 <0.047 <0.72 <0.10 <0.64 <0.059 <0.25 <0.044 <0.054 <0.076 <0.15
3/22/2022 <10.0 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <200 <0.500 <0.500 <0.500 <0.500 <5.00 <1.00 <1.00 <1.00 <0.500 <0.500 <10.0 <10.0 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500
3/7/2023 <10.0 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <200 <0.500 <0.500 <0.500 <0.500 <5.00 <1.00 <1.00 <1.00 <0.500 <0.500 <10.0 <10.0 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500
7/5/2012 ND ND ND ND ND NR NR ND NR ND ND ND NR ND ND NR ND NR ND NR NR NR NR NR ND ND ND ND
6/19/2013 ND ND 0.49 J ND ND NR NR ND NR 0.77 ND ND NR NR ND NR 1.9 J 0.49 J ND NR NR NR NR NR 0.55 4.2 1.3 3.8
7/22/2014 <50 <1 <1 <1 <1 <1 <2.5 <1 NA <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 NA NA NA NA NA <5 <1 <1 <2
4/29/2015 <50 <1 <1 <1 <1 <1 <2.5 <1 <100 <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 <50 <1 <5 <1 <20 <5 <1 <1 <2
5/11/2016 <50 <1 <1 <1 <1 <1 <2.5 <1 <100 <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 <50 <1 <5 <1 <20 <5 <1 <1 <2
8/14/2019
11/13/2020 <0.31 <0.048 <0.076 <0.076 <0.088 <0.11 <0.079 <0.066 <27 <0.061 <0.050 <0.054 <0.089 <0.24 <0.042 <0.078 <0.19 <0.087 <0.047 <0.72 <0.10 <0.64 <0.059 <0.25 <0.044 <0.054 <0.076 <0.15
3/22/2022 <10.0 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <200 <0.500 <0.500 <0.500 <0.500 <5.00 <1.00 <1.00 <1.00 <0.500 <0.500 <10.0 <10.0 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500
3/7/2023 <10.0 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <200 <0.500 <0.500 <0.500 <0.500 <5.00 <1.00 <1.00 <1.00 <0.500 <0.500 <10.0 <10.0 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500
WSW-1 7/22/2014 <50 <1 <1 <1 <1 <1 <2.5 <1 NA <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 NA NA NA NA NA <5 <1 <1 <2
7/22/2014 <50 <1 <1 <1 <1 <1 <2.5 <1 NA <1 1.1 <1 <1 <10 <1 <10 <5 <1 <1 NA NA NA NA NA <5 <1 <1 <2
4/29/2015 <50 <1 <1 <1 <1 <1 <2.5 <1 <100 <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 <50 <1 <5 <1 <20 <5 <1 <1 <2
5/12/2016 <50 <1 <1 <1 <1 <1 <2.5 <1 <100 <1 1.02 <1 <1 <10 <1 <10 <5 <1 <1 <50 <1 <5 <1 <20 <5 <1 <1 <2
8/14/2019 <10 <0.048 <0.076 <0.076 <0.088 <0.11 <0.079 <0.066 <27 <0.061 <0.050 <0.054 <0.089 <5 <0.042 <0.078 <0.19 <0.087 <0.047 <0.72 <0.10 <0.64 <0.059 <0.25 <0.044 <0.054 <0.076 <0.15
11/13/2020 <0.31 <0.048 <0.076 <0.076 NA <0.11 <0.079 <0.066 <27 <0.061 2.3 <0.054 <0.089 <0.24 <0.042 <0.078 <0.19 <0.087 <0.047 NA NA <0.64 NA NA <0.044 <0.054 <0.076 <0.15
3/22/2022 <10.0 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <200 <0.500 0.876 <0.500 <0.500 <5.00 <1.00 <1.00 <1.00 <0.500 <0.500 <10.0 <10.0 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500
3/7/2023 <10.0 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <200 <0.500 <0.500 <0.500 <0.500 <5.00 <1.00 <1.00 <1.00 <0.500 <0.500 <10.0 <10.0 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500
WSW-4 7/22/2014 <50 <1 <1 <1 <1 <1 <2.5 <1 NA <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 NA NA NA NA NA <5 <1 <1 <2
WSW-7 7/22/2014 <50 <1 <1 <1 <1 <1 <2.5 <1 NA <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 NA NA NA NA NA <5 <1 <1 <2
4/29/2015 <50 <1 <1 <1 <1 <1 <2.5 <1 <100 <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 <50 <1 <5 <1 <20 <5 <1 <1 <2
5/11/2016 <50 <1 <1 <1 <1 <1 <2.5 <1 <100 <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 <50 <1 <5 <1 <20 <5 <1 <1 <2
7/22/2014 <50 <1 <1 <1 <1 <1 <2.5 <1 NA <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 NA NA NA NA NA <5 <1 <1 <2
5/11/2016 <50 <1 <1 <1 <1 <1 <2.5 <1 <100 <1 <1 <1 <1 <10 <1 <10 <5 <1 <1 <50 <1 <5 <1 <20 <5 <1 <1 <2
8/14/2019 22 <0.048 <0.076 <0.076 <0.088 <0.11 <0.079 <0.066 <27 <0.061 <0.050 <0.054 <0.089 <0.24 <0.042 <0.078 <0.19 <0.087 <0.047 <0.72 <0.10 <0.64 <0.059 <0.25 <0.044 <0.054 <0.076 <0.15
11/13/2020 <0.31 <0.048 <0.076 <0.076 NA <0.11 <0.079 <0.066 <27 <0.061 <0.050 <0.054 <0.089 <0.24 <0.042 <0.078 <0.19 <0.087 <0.047 NA NA <0.64 NA NA <0.044 <0.054 <0.076 <0.15
3/22/2022
3/7/2023
6,000 1 70 70 70 NL 3 0.4 4,000 600 70 70 25 4,000 20 100 6 70 70 40 128 10 47 40 600 400 400 500
6,000,000 5,000 5,900 8,800 14,750 NL 3,000 400 4,000,000 80,000 70,000 30,500 11,700 4,000,000 20,000 100,000 6,000 26,100 70,000 40,000 128,000 10,000 47,000 40,000 260,000 28,500 24,100 50,000
Notes:
1)NL = Not Listed2)NA = Compound Not Analyzed for by Laboratory
3)NR = Compound Not Reported By Previous Consultants, or not included in analytical method suite4)ND = Compound Not Detected.
5)Result = Result Exceeds Laboratory Detection Limits
Result = Result Exceeds 2L Standard
Result = Result Exceeds GCL Value
GCLs for Groundwater
NOT SAMPLED - NO POWER TO WELL
J = Compound detected above laboratory detection limite but below the laboratory reporting limit.
NOT SAMPLED - NO POWER TO WELL
GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater.
All results provided in ug/L (micrograms per liter) or parts per billion.
Compounds analyzed 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.
NOT SAMPLED
NOT SAMPLED
NC 2L Standard - North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.
MW-5
WSW-2
NC 2L Standard
MW-4
WSW-12
WSW-11
Page 2 of 2
Easting NorthingWSW‐1 7880991864 5304 Liberty Rd Ruby F. Baker5304 Liberty RdGreensboro, NC 27406Potable(Active)Unknown Unknown 735 Up‐gradient 1789105.51 810035.78WSW‐2 7890091203 5607 Hagan Stone Park Rd Kim Simpson5607 Hagan Stone Park RdGreensboro, NC 27406Potable(Active)Unknown Unknown 335 Down‐gradient 1789956.58 809404.57WSW‐3 7880899807 5503‐A Chapparal DrFredrick W. & Ceyln P.Holt3906 Stonebrook FarmsGreensboro, NC 27406Potable(Active)Unknown Unknown 865 Up‐gradient 1788908.21 809919.35WSW‐4 7891002002 5401 Liberty RdCommunity in Christ Presbyterian Church5401 Liberty RdGreensboro, NC 27406Potable(Active)Unknown Unknown 710 Cross‐gradient 1790261.85 810114.81WSW‐5 7881908476 5409 Forest Oaks Dr Carolina Beasley5409 Forest Oaks DrGreensboro, NC 27406Non‐Potable Unknown Unknown 845 Cross‐gradient 1789815.41 810484.11WSW‐6 7881908578 5407 Forest Oaks DrWalter N. & Rhonda B.Mandrack5407 Forest Oaks DrGreensboro, NC 27406Potable(Active)Unknown Unknown 965 Cross‐gradient 1789813.00 810605.57WSW‐7 7890084808 5611 Hagan Stone Park Rd J. H. Thompson 5611 Hagan Stone Park RdPotable(Active)Unknown Unknown 805 Down‐gradient 1789988.80 808883.51WSW‐8 7890080425 5621 Hagan Stone Park Rd Lawrence Glenn Feir5621 Hagan Stone Park RdGreensboro, NC 27406Potable(Active)Unknown Unknown 1205 Down‐gradient 1789960.09 808463.53WSW‐9 7881906513 5408 Forest Oaks Dr Lornie May5408 Forest Oaks DrGreensboro, NC 27406Potable(Active)Unknown Unknown 925 Cross‐gradient 1789538.65 810551.46WSW‐10 7881908780 5405 Forest Oaks Dr Paul Johnson, Jr.5405 Forest Oaks DrGreensboro, NC 27406Potable(Active)Unknown Unknown 1080 Cross‐gradient 1789821.43 810721.02WSW‐11 7890093146 5410 Liberty Rd Timothy Simpson5410 Liberty RdGreensboro, NC 27406Potable(Active)Unknown Unknown 785 Down‐gradient 1790291.20 809100.56WSW‐12 7880993860 5306 Liberty RdBrotherhood Properties, LLC11 Edinburgh CtGreensboro, NC 27406Potable(Active)Unknown Unknown 400 Up‐gradient 1789336.65 809718.41WSW‐13 7880983611 5626 Hagan Ct Phillip & Donna Silvestri5626 Hagan CtGreensboro, NC 27406Potable(Active)Unknown Unknown 1030 Cross‐gradient 1789167.528 808780.0075WSW‐14 7880897712 5511 Chapparal Dr Ann Crutchfield5511 Chapparal DrGreensboro, NC 27406Potable(Active)Unknown Unknown 1050 Up‐gradient 1788677.07 809647.05       2.)  Information regarding the water supply well's use and location  obtained from Groundwater Monitoring Report Crawford Environmental Services, April 18, 2013.        3.)  WR has not performed a receptor survey in association with the subject property and thus the information provided above has not been verified. Well Screen Interval(feet)Notes:        1.)  Well location addresses and property owner address were obtained from the Guilford County GIS Department.  Property ownership data current as of September 10, 2019.Well IDWell Distance from Source Area(feet)Well Coordinates(NC State Plane NAD 83 Feet)ParcelNumberLocation Relative to Groundwater FlowProperty AddressIncident Number: 3298Well UseTABLE B‐5PUBLIC & PRIVATE WATER SUPPLY WELL INFORMATIONFOREST OAKS CIRCLE K5324 Liberty RoadGreensboro, Guilford County, NCProperty Owner Property Owner AddressWell Depth(feet)Page 1 of 1
Easting NorthingMW‐1 7/10/2009 2 22 7 7 ‐ 22 100.00 3/7/2023 6.13‐‐‐93.87 1789740.28 809691.81MW‐2 11/3/2009 2 17 7 7 ‐ 17 99.83 3/7/2023 7.25‐‐‐92.58 1789690.88 809722.76MW‐3 11/3/2009 2 17 7 7 ‐ 17 97.70 3/7/2023 4.20‐‐‐93.50 1789788.67 809601.04MW‐4 11/3/2009 2 14.5 4.5 4.5 ‐ 14.5 96.59 3/7/2023 3.54‐‐‐93.05 1789704.38 809568.03MW‐5 5/15/2012 2 16 6 6 ‐ 16 94.40 3/7/2023 3.03‐‐‐91.37 1789820.55 809582.821)2)3)Top‐of‐Casing Elevation      (feet)Well Casing Depth (feet)Well coordinates collected using a Trimble 2005 Series GeoXH GPS Unit.NM Denotes "Not Measured".Notes: Depth‐to‐Water from Top‐of‐Casing(feet)GroundwaterElevation      (feet)Top of Casing (TOC) elevations based on arbitrary 100 foot benchmark established at TOC for MW‐1 by S&ME, Inc., November 5, 2009.Free Product Thickness(feet)Well Casing Diameter(inches)Date InstalledTotal Depth     (feet)TABLE B‐75324 Liberty RoadMONITORING & REMEDIATION WELL CONSTRUCTION INFORMATIONDate Water Level MeasuredScreened Interval     (feet)Greensboro, Guilford County, NCWell IDWell Coordinates(NC State Plane NAD 83 Feet)FOREST OAKS CIRCLE KIncident Number: 3298Page 1 of 1
Well ID
Screened
Interval (feet)
Top-of-Casing Elevation (feet)
Date Water Level Measured
Depth-to-LNAPL(feet)
Depth-to-WaterUncorrected(feet)
LNAPL Thickness(feet)
Depth-to-WaterCorrected(feet)
Groundwater SurfaceElevation (feet)
7/13/2009 ---7.15 ---7.15 92.85
11/5/2009 ---9.21 ---9.21 90.79
11/20/2009 ---7.97 ---7.97 92.03
6/28/2010 ---7.37 ---7.37 92.63
8/16/2011 ---9.16 ---9.16 90.84
7/5/2012 ---8.51 ---8.51 91.49
6/19/2013 ---6.19 ---6.19 93.81
7/22/2014 ---7.75 ---7.75 92.25
4/29/2015 ---6.60 ---6.60 93.40
5/11/2016 ---6.69 ---6.69 93.31
8/14/2019 ---7.23 ---7.23 92.77
11/13/2020 ---5.62 ---5.62 94.38
2/14/2022 (pre-MMPE)---8.05 ---8.05 91.95
2/18/2022 (post-MMPE)---4.70 ---4.70 95.30
3/22/2022 ---6.94 ---6.94 93.06
3/7/2023 ---6.13 ---6.13 93.87
11/5/2009 ---10.08 ---10.08 89.75
11/20/2009 ---8.97 ---8.97 90.86
6/28/2010 ---7.57 ---7.57 92.26
8/16/2011 ---10.28 ---10.28 89.55
7/5/2012 ---9.47 ---9.47 90.36
6/19/2013 ---6.99 ---6.99 92.84
7/22/2014 ---8.31 ---8.31 91.52
4/29/2015 ---7.74 ---7.74 92.09
5/11/2016 ---7.99 ---7.99 91.84
8/14/2019 ---7.22 ---7.22 92.61
11/13/2020 ---6.21 ---6.21 93.62
3/22/2022 ---8.27 ---8.27 91.56
3/7/2023 ---7.25 ---7.25 92.58
11/5/2009 ---7.71 ---7.71 89.99
11/20/2009 ---5.96 ---5.96 91.74
6/28/2010 ---6.06 ---6.06 91.64
8/16/2011 ---8.47 ---8.47 89.23
7/5/2012 ---8.15 ---8.15 89.55
6/19/2013 ---4.81 ---4.81 92.89
7/22/2014 ---7.80 ---7.80 89.90
4/29/2015 ---6.25 ---6.25 91.45
5/11/2016 ---5.39 ---5.39 92.31
8/14/2019 ---6.92 ---6.92 90.78
11/13/2020 ---3.23 ---3.23 94.47
2/14/2022 (pre-MMPE)---4.70 ---4.70 94.47
2/18/2022 (post-MMPE)---16.22 ---16.22 94.47
3/22/2022 ---6.81 ---6.81 90.89
3/7/2023 ---4.20 ---4.20 93.50
1)2)3)
Incident Number: 3298
TABLE B-9CURRENT & HISTORICAL GROUNDWATER ELEVATIONS & FREE PRODUCT THICKNESSFOREST OAKS CIRCLE K
5324 Liberty RoadGreensboro, Guilford County, NC
MW-2
MW-1 7 - 22 100.00
7 - 17 99.83
97.70MW-3 7 - 17
Notes: Top of Casing (TOC) elevations based on arbitrary 100 foot benchmark established at TOC for MW-1by S&ME, Inc., November 5, 2009.NM Denotes "Not Measured"WR Personnel were unable to locate MW-5 on August 14, 2019.
Page 1 of 2
Well ID
Screened
Interval (feet)
Top-of-Casing Elevation (feet)
Date Water Level Measured
Depth-to-LNAPL(feet)
Depth-to-WaterUncorrected(feet)
LNAPL Thickness(feet)
Depth-to-WaterCorrected(feet)
Groundwater SurfaceElevation (feet)
Incident Number: 3298
TABLE B-9CURRENT & HISTORICAL GROUNDWATER ELEVATIONS & FREE PRODUCT THICKNESSFOREST OAKS CIRCLE K
5324 Liberty RoadGreensboro, Guilford County, NC

11/5/2009 ---4.84 ---4.84 91.75
11/20/2009 ---4.62 ---4.62 91.97
6/28/2010 ---5.34 ---5.34 91.25
8/16/2011 ---6.17 ---6.17 90.42
7/5/2012 ---6.34 ---6.34 90.25
6/19/2013 ---4.15 ---4.15 92.44
7/22/2014 ---5.82 ---5.82 90.77
4/29/2015 ---4.45 ---4.45 92.14
5/11/2016 ---4.11 ---4.11 92.48
8/14/2019 ---5.57 ---5.57 91.02
11/13/2020 ---3.19 ---3.19 93.40
3/22/2022 ---3.90 ---3.90 92.69
3/7/2023 ---3.54 ---3.54 93.05
7/5/2012 ---6.72 ---6.72 87.68
6/19/2013 ---6.83 ---6.83 87.57
7/22/2014 ---7.30 ---7.30 87.10
4/29/2015 ---3.65 ---3.65 90.75
5/11/2016 ---3.84 ---3.84 90.56
8/14/2019 ---NM ---NM NM
11/13/2020 ---3.31 ---3.31 91.09
3/22/2022 ---3.05 ---3.05 91.35
3/7/2023 ---3.03 ---3.03 91.37
1)2)3)
Top of Casing (TOC) elevations based on arbitrary 100 foot benchmark established at TOC for MW-1by S&ME, Inc., November 5, 2009.NM Denotes "Not Measured"WR Personnel were unable to locate MW-5 on August 14, 2019.
Notes:
4.5 - 14.5 96.59
94.40
MW-4
MW-5 6 - 16
Page 2 of 2
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APPENDIX A FIELD NOTES & PHOTOGRAPHIC RECORD
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Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23-0307-K Groundwater Monitoring Report Photograph Date: March 7, 2023
PHOTO 1
Site facing west
PHOTO 2 Location of MW-1 facing southwest
WithersRavenel
Our People. Your Success.
Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23-0307-K Groundwater Monitoring Report Photograph Date: March 7, 2023
PHOTO 3 Location of MW-2 facing south
PHOTO 4 Location of MW-3 facing west
WithersRavenel
Our People. Your Success.
Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23-0307-K Groundwater Monitoring Report Photograph Date: March 7, 2023
PHOTO 5 Location of MW-4 facing northeast
PHOTO 6 Location of MW-1 facing south (photo from March 2022)
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Our People. Your Success.
Forest Oaks Circle K – NCDEQ Inc. #3298 WR Project # 23-0307-K Groundwater Monitoring Report Photograph Date: March 7, 2023
PHOTO 7 Residence served by water supply well WSW-2
PHOTO 8 Residence served by water supply well WSW-12
WithersRavenel
Our People. Your Success.

APPENDIX B LABORATORY ANALYTICAL REPORT

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.

3/20/2023
Withers & Ravenel Liz Allyn
115 Mackenan Dr. BUILDING 117 Cary, NC, 27511
Ref: Analytical Testing
Lab Report Number: 23-069-0106 Client Project Description: Forest Oaks Circle K
Dear Liz Allyn:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 3/10/2023 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
07/31/202337735State ProgramNorth Carolina
12/31/2023402State ProgramNorth Carolina
07/31/202399012State ProgramSouth Carolina
12/31/202299012State ProgramSouth Carolina
Page 1 of 1 00016/23-069-0106
Page 2 of 43
Report Number:
Sample Summary Table
Client Project Description:
23-069-0106
Forest Oaks Circle K
Lab No Client Sample ID Matrix Date Collected Date Received
03/07/2023 14:25Aqueous 90875 MW-1 03/10/2023 12:30
03/07/2023 13:40Aqueous 90876 MW-2 03/10/2023 12:30
03/07/2023 11:45Aqueous 90877 MW-3 03/10/2023 12:30
03/07/2023 13:05Aqueous 90878 MW-4 03/10/2023 12:30
03/07/2023 12:25Aqueous 90879 MW-5 03/10/2023 12:30
03/07/2023 15:30Aqueous 90880 WSW-2 03/10/2023 12:30
03/07/2023 14:50Aqueous 90881 Field Blank 03/10/2023 12:30
Page 3 of 43
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-069-0106
Report Limit
Project:Forest Oaks Circle K
V 90875MW-1
3090 03/17/2023 23:176200BBenzeneµg/L 50.0
11.0 03/16/2023 21:136200Bn-Butylbenzene µg/L 5.00
5.93 03/16/2023 21:136200Bsec-Butyl benzene µg/L 5.00
116 03/16/2023 21:136200BChloromethaneµg/L 5.00
227 03/16/2023 21:136200BDi-Isopropyl Ether (DIPE)µg/L 5.00
2510 03/17/2023 23:176200BEthylbenzeneµg/L 50.0
59.7 03/16/2023 21:136200BIsopropylbenzeneµg/L 5.00
5.25 03/16/2023 21:136200B4-Isopropyl toluene µg/L 5.00
16.6 03/16/2023 21:136200BMethyl tert-butyl ether (MTBE)µg/L 10.0
752 03/16/2023 21:136200BNaphthaleneµg/L 10.0
153 03/16/2023 21:136200Bn-Propylbenzene µg/L 5.00
10.8 03/16/2023 21:136200BStyreneµg/L 5.00
1400 03/17/2023 23:176200BTolueneµg/L 50.0
701 03/16/2023 21:136200B1,2,4-Trimethylbenzene µg/L 5.00
200 03/16/2023 21:136200B1,3,5-Trimethylbenzene µg/L 5.00
709 03/16/2023 21:136200Bo-Xylene µg/L 5.00
3970 03/17/2023 23:176200Bm,p-Xylene µg/L 100
4680 03/16/2023 21:136200BXylene (Total)µg/L 5.00
V 90876MW-2
47.7 03/16/2023 17:136200BDi-Isopropyl Ether (DIPE)µg/L 0.500
3.00 03/16/2023 17:136200BMethyl tert-butyl ether (MTBE)µg/L 1.00
64.5 03/16/2023 17:136200Btert-Butyl Alcohol (TBA)µg/L 10.0
V 90877MW-3
3230 03/16/2023 22:016200BBenzeneµg/L 50.0
616 03/16/2023 22:016200Bn-Butylbenzene µg/L 50.0
170 03/16/2023 22:016200Bsec-Butyl benzene µg/L 50.0
76.9 03/16/2023 22:016200BDi-Isopropyl Ether (DIPE)µg/L 50.0
3900 03/16/2023 22:016200BEthylbenzeneµg/L 50.0
340 03/16/2023 22:016200BIsopropylbenzeneµg/L 50.0
98.1 03/16/2023 22:016200B4-Isopropyl toluene µg/L 50.0
389 03/16/2023 22:016200B4-Methyl-2-Pentanone µg/L 100
2280 03/16/2023 22:016200BNaphthaleneµg/L 100
1340 03/16/2023 22:016200Bn-Propylbenzene µg/L 50.0
3750 03/16/2023 22:016200BTolueneµg/L 50.0
7170 03/16/2023 22:016200B1,2,4-Trimethylbenzene µg/L 50.0
2270 03/16/2023 22:016200B1,3,5-Trimethylbenzene µg/L 50.0
Page 4 of 43
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-069-0106
Report Limit
Project:Forest Oaks Circle K
V 90877MW-3
2620 03/16/2023 22:016200Bo-Xylene µg/L 50.0
10600 03/16/2023 22:016200Bm,p-Xylene µg/L 100
13200 03/16/2023 22:016200BXylene (Total)µg/L 50.0
Page 5 of 43

Client: Withers & Ravenel CASE NARRATIVE
Project: Forest Oaks Circle K Lab Report Number: 23-069-0106
Date: 3/20/2023
Volatile Organic Compounds - GC/MS Method 6200B Analyte: tert-Amyl Methyl Ether QC Batch No: V30957/V30955
Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits.

Page 6 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-1
90875 Matrix:
3/7/2023 14:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<100 µg/L 100Acetone 10 03/16/23 21:13 6200BENM
3090 µg/L 50.0Benzene 100 03/17/23 23:17 6200BMSA
<5.00 µg/L 5.00Bromobenzene 10 03/16/23 21:13 6200BENM
<10.0 µg/L 10.0Bromochloromethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00Bromodichloromethane 10 03/16/23 21:13 6200BENM
<50.0 µg/L 50.0Bromoform 10 03/16/23 21:13 6200BENM
<10.0 µg/L 10.0Bromomethane 10 03/16/23 21:13 6200BENM
11.0 µg/L 5.00n-Butylbenzene 10 03/16/23 21:13 6200BENM
5.93 µg/L 5.00sec-Butyl benzene 10 03/16/23 21:13 6200BENM
<20.0 µg/L 20.0tert-Butyl benzene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00Carbon Tetrachloride 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00Chlorobenzene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00Chlorodibromomethane 10 03/16/23 21:13 6200BENM
<10.0 µg/L 10.0Chloroethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00Chloroform 10 03/16/23 21:13 6200BENM
116 µg/L 5.00Chloromethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.002-Chlorotoluene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.004-Chlorotoluene 10 03/16/23 21:13 6200BENM
<20.0 µg/L 20.01,2-Dibromo-3-Chloropropane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,2-Dibromoethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00Dibromomethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,2-Dichlorobenzene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,3-Dichlorobenzene 10 03/16/23 21:13 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 7 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-1
90875 Matrix:
3/7/2023 14:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<5.00 µg/L 5.001,4-Dichlorobenzene 10 03/16/23 21:13 6200BENM
<50.0 µg/L 50.0Dichlorodifluoromethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,1-Dichloroethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,2-Dichloroethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,1-Dichloroethene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00cis-1,2-Dichloroethene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00trans-1,2-Dichloroethene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,2-Dichloropropane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,3-Dichloropropane 10 03/16/23 21:13 6200BENM
<20.0 µg/L 20.02,2-Dichloropropane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,1-Dichloropropene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00cis-1,3-Dichloropropene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00trans-1,3-Dichloropropene 10 03/16/23 21:13 6200BENM
<2000 µg/L 2000Ethanol 10 03/16/23 21:13 6200BENM
2510 µg/L 50.0Ethylbenzene 100 03/17/23 23:17 6200BMSA
<30.0 µg/L 30.0Hexachlorobutadiene 10 03/16/23 21:13 6200BENM
227 µg/L 5.00Di-Isopropyl Ether (DIPE)10 03/16/23 21:13 6200BENM
59.7 µg/L 5.00Isopropylbenzene 10 03/16/23 21:13 6200BENM
5.25 µg/L 5.004-Isopropyl toluene 10 03/16/23 21:13 6200BENM
<10.0 µg/L 10.02-Hexanone 10 03/16/23 21:13 6200BENM
<50.0 µg/L 50.0Methyl Ethyl Ketone (MEK)10 03/16/23 21:13 6200BENM
<20.0 µg/L 20.0Methylene Chloride 10 03/16/23 21:13 6200BENM
16.6 µg/L 10.0Methyl tert-butyl ether (MTBE)10 03/16/23 21:13 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 8 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-1
90875 Matrix:
3/7/2023 14:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.04-Methyl-2-Pentanone 10 03/16/23 21:13 6200BENM
752 µg/L 10.0Naphthalene 10 03/16/23 21:13 6200BENM
153 µg/L 5.00n-Propylbenzene 10 03/16/23 21:13 6200BENM
10.8 µg/L 5.00Styrene 10 03/16/23 21:13 6200BENM
<1000 µg/L 1000tert-Amyl Alcohol (TAA)100 03/17/23 23:17 6200BMSA
<100 µg/L 100tert-Amyl Methyl Ether (TAME)10 03/16/23 21:13 6200BENM
<100 µg/L 100tert-Butyl Alcohol (TBA)10 03/16/23 21:13 6200BENM
<100 µg/L 100Ethyl Tertiary Butyl Ether (ETBE)10 03/16/23 21:13 6200BENM
<100 µg/L 100tert-Butyl formate (TBF)10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,1,1,2-Tetrachloroethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,1,2,2-Tetrachloroethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00Tetrachloroethene 10 03/16/23 21:13 6200BENM
1400 µg/L 50.0Toluene 100 03/17/23 23:17 6200BMSA
<5.00 µg/L 5.001,2,3-Trichlorobenzene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,2,4-Trichlorobenzene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,1,1-Trichloroethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,1,2-Trichloroethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00Trichloroethene 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.00Trichlorofluoromethane 10 03/16/23 21:13 6200BENM
<5.00 µg/L 5.001,2,3-Trichloropropane 10 03/16/23 21:13 6200BENM
701 µg/L 5.001,2,4-Trimethylbenzene 10 03/16/23 21:13 6200BENM
200 µg/L 5.001,3,5-Trimethylbenzene 10 03/16/23 21:13 6200BENM
<50.0 µg/L 50.0Vinyl Acetate 10 03/16/23 21:13 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 9 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-1
90875 Matrix:
3/7/2023 14:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<5.00 µg/L 5.00Vinyl Chloride 10 03/16/23 21:13 6200BENM
3970 µg/L 100m,p-Xylene 100 03/17/23 23:17 6200BMSA
709 µg/L 5.00o-Xylene 10 03/16/23 21:13 6200BENM
4680 µg/L 5.00Xylene (Total)10 03/16/23 21:13 6200B
Surrogate: 4-Bromofluorobenzene 90.4 Limits: 70-130%03/16/23 21:1310 ENM V30957
Surrogate: Dibromofluoromethane 95.4 Limits: 70-130%03/16/23 21:1310 ENM V30957
Surrogate: 1,2-Dichloroethane - d4 92.8 Limits: 70-130%03/16/23 21:1310 ENM V30957
Surrogate: Toluene-d8 85.6 Limits: 70-130%03/16/23 21:1310 ENM V30957
Surrogate: 4-Bromofluorobenzene 95.4 Limits: 70-130%03/17/23 23:17100 MSA V30984
Surrogate: Dibromofluoromethane 86.6 Limits: 70-130%03/17/23 23:17100 MSA V30984
Surrogate: 1,2-Dichloroethane - d4 89.0 Limits: 70-130%03/17/23 23:17100 MSA V30984
Surrogate: Toluene-d8 98.4 Limits: 70-130%03/17/23 23:17100 MSA V30984
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 10 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-2
90876 Matrix:
3/7/2023 13:40
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Benzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Bromobenzene 1 03/16/23 17:13 6200BENM
<1.00 µg/L 1.00Bromochloromethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Bromodichloromethane 1 03/16/23 17:13 6200BENM
<5.00 µg/L 5.00Bromoform 1 03/16/23 17:13 6200BENM
<1.00 µg/L 1.00Bromomethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500n-Butylbenzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500sec-Butyl benzene 1 03/16/23 17:13 6200BENM
<2.00 µg/L 2.00tert-Butyl benzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Carbon Tetrachloride 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Chlorobenzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Chlorodibromomethane 1 03/16/23 17:13 6200BENM
<1.00 µg/L 1.00Chloroethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Chloroform 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Chloromethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5002-Chlorotoluene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5004-Chlorotoluene 1 03/16/23 17:13 6200BENM
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,2-Dibromoethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Dibromomethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 03/16/23 17:13 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 11 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-2
90876 Matrix:
3/7/2023 13:40
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 03/16/23 17:13 6200BENM
<5.00 µg/L 5.00Dichlorodifluoromethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,2-Dichloroethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,2-Dichloropropane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,3-Dichloropropane 1 03/16/23 17:13 6200BENM
<2.00 µg/L 2.002,2-Dichloropropane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,1-Dichloropropene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 03/16/23 17:13 6200BENM
<200 µg/L 200Ethanol 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Ethylbenzene 1 03/16/23 17:13 6200BENM
<3.00 µg/L 3.00Hexachlorobutadiene 1 03/16/23 17:13 6200BENM
47.7 µg/L 0.500Di-Isopropyl Ether (DIPE)1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Isopropylbenzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5004-Isopropyl toluene 1 03/16/23 17:13 6200BENM
<1.00 µg/L 1.002-Hexanone 1 03/16/23 17:13 6200BENM
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 03/16/23 17:13 6200BENM
<2.00 µg/L 2.00Methylene Chloride 1 03/16/23 17:13 6200BENM
3.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 03/16/23 17:13 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 12 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-2
90876 Matrix:
3/7/2023 13:40
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 03/16/23 17:13 6200BENM
<1.00 µg/L 1.00Naphthalene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500n-Propylbenzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Styrene 1 03/16/23 17:13 6200BENM
<1000 µg/L 1000tert-Amyl Alcohol (TAA)100 03/17/23 23:45 6200BMSA
<10.0 µg/L 10.0tert-Amyl Methyl Ether (TAME)1 03/16/23 17:13 6200BENM
64.5 µg/L 10.0tert-Butyl Alcohol (TBA)1 03/16/23 17:13 6200BENM
<10.0 µg/L 10.0Ethyl Tertiary Butyl Ether (ETBE)1 03/16/23 17:13 6200BENM
<10.0 µg/L 10.0tert-Butyl formate (TBF)1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Tetrachloroethene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Toluene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Trichloroethene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Trichlorofluoromethane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 03/16/23 17:13 6200BENM
<5.00 µg/L 5.00Vinyl Acetate 1 03/16/23 17:13 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 13 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-2
90876 Matrix:
3/7/2023 13:40
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Vinyl Chloride 1 03/16/23 17:13 6200BENM
<1.00 µg/L 1.00m,p-Xylene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500o-Xylene 1 03/16/23 17:13 6200BENM
<0.500 µg/L 0.500Xylene (Total)1 03/16/23 17:13 6200B
Surrogate: 4-Bromofluorobenzene 90.2 Limits: 70-130%03/16/23 17:131 ENM V30957
Surrogate: Dibromofluoromethane 93.0 Limits: 70-130%03/16/23 17:131 ENM V30957
Surrogate: 1,2-Dichloroethane - d4 82.6 Limits: 70-130%03/16/23 17:131 ENM V30957
Surrogate: Toluene-d8 88.6 Limits: 70-130%03/16/23 17:131 ENM V30957
Surrogate: 4-Bromofluorobenzene 95.2 Limits: 70-130%03/17/23 23:45100 MSA V30984
Surrogate: Dibromofluoromethane 87.4 Limits: 70-130%03/17/23 23:45100 MSA V30984
Surrogate: 1,2-Dichloroethane - d4 91.2 Limits: 70-130%03/17/23 23:45100 MSA V30984
Surrogate: Toluene-d8 97.8 Limits: 70-130%03/17/23 23:45100 MSA V30984
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 14 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-3
90877 Matrix:
3/7/2023 11:45
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1000 µg/L 1000Acetone 100 03/16/23 22:01 6200BENM
3230 µg/L 50.0Benzene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Bromobenzene 100 03/16/23 22:01 6200BENM
<100 µg/L 100Bromochloromethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Bromodichloromethane 100 03/16/23 22:01 6200BENM
<500 µg/L 500Bromoform 100 03/16/23 22:01 6200BENM
<100 µg/L 100Bromomethane 100 03/16/23 22:01 6200BENM
616 µg/L 50.0n-Butylbenzene 100 03/16/23 22:01 6200BENM
170 µg/L 50.0sec-Butyl benzene 100 03/16/23 22:01 6200BENM
<200 µg/L 200tert-Butyl benzene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Carbon Tetrachloride 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Chlorobenzene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Chlorodibromomethane 100 03/16/23 22:01 6200BENM
<100 µg/L 100Chloroethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Chloroform 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Chloromethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.02-Chlorotoluene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.04-Chlorotoluene 100 03/16/23 22:01 6200BENM
<200 µg/L 2001,2-Dibromo-3-Chloropropane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,2-Dibromoethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Dibromomethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,2-Dichlorobenzene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,3-Dichlorobenzene 100 03/16/23 22:01 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 15 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-3
90877 Matrix:
3/7/2023 11:45
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.01,4-Dichlorobenzene 100 03/16/23 22:01 6200BENM
<500 µg/L 500Dichlorodifluoromethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,1-Dichloroethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,2-Dichloroethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,1-Dichloroethene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0cis-1,2-Dichloroethene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0trans-1,2-Dichloroethene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,2-Dichloropropane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,3-Dichloropropane 100 03/16/23 22:01 6200BENM
<200 µg/L 2002,2-Dichloropropane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,1-Dichloropropene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0cis-1,3-Dichloropropene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0trans-1,3-Dichloropropene 100 03/16/23 22:01 6200BENM
<20000 µg/L 20000Ethanol 100 03/16/23 22:01 6200BENM
3900 µg/L 50.0Ethylbenzene 100 03/16/23 22:01 6200BENM
<300 µg/L 300Hexachlorobutadiene 100 03/16/23 22:01 6200BENM
76.9 µg/L 50.0Di-Isopropyl Ether (DIPE)100 03/16/23 22:01 6200BENM
340 µg/L 50.0Isopropylbenzene 100 03/16/23 22:01 6200BENM
98.1 µg/L 50.04-Isopropyl toluene 100 03/16/23 22:01 6200BENM
<100 µg/L 1002-Hexanone 100 03/16/23 22:01 6200BENM
<500 µg/L 500Methyl Ethyl Ketone (MEK)100 03/16/23 22:01 6200BENM
<200 µg/L 200Methylene Chloride 100 03/16/23 22:01 6200BENM
<100 µg/L 100Methyl tert-butyl ether (MTBE)100 03/16/23 22:01 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 16 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-3
90877 Matrix:
3/7/2023 11:45
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
389 µg/L 1004-Methyl-2-Pentanone 100 03/16/23 22:01 6200BENM
2280 µg/L 100Naphthalene 100 03/16/23 22:01 6200BENM
1340 µg/L 50.0n-Propylbenzene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Styrene 100 03/16/23 22:01 6200BENM
<1000 µg/L 1000tert-Amyl Alcohol (TAA)100 03/16/23 22:01 6200BENM
<1000 µg/L 1000tert-Amyl Methyl Ether (TAME)100 03/16/23 22:01 6200BENM
<1000 µg/L 1000tert-Butyl Alcohol (TBA)100 03/16/23 22:01 6200BENM
<1000 µg/L 1000Ethyl Tertiary Butyl Ether (ETBE)100 03/16/23 22:01 6200BENM
<1000 µg/L 1000tert-Butyl formate (TBF)100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Tetrachloroethene 100 03/16/23 22:01 6200BENM
3750 µg/L 50.0Toluene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,2,3-Trichlorobenzene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,2,4-Trichlorobenzene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,1,1-Trichloroethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,1,2-Trichloroethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Trichloroethene 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.0Trichlorofluoromethane 100 03/16/23 22:01 6200BENM
<50.0 µg/L 50.01,2,3-Trichloropropane 100 03/16/23 22:01 6200BENM
7170 µg/L 50.01,2,4-Trimethylbenzene 100 03/16/23 22:01 6200BENM
2270 µg/L 50.01,3,5-Trimethylbenzene 100 03/16/23 22:01 6200BENM
<500 µg/L 500Vinyl Acetate 100 03/16/23 22:01 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 17 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-3
90877 Matrix:
3/7/2023 11:45
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.0Vinyl Chloride 100 03/16/23 22:01 6200BENM
10600 µg/L 100m,p-Xylene 100 03/16/23 22:01 6200BENM
2620 µg/L 50.0o-Xylene 100 03/16/23 22:01 6200BENM
13200 µg/L 50.0Xylene (Total)100 03/16/23 22:01 6200B
Surrogate: 4-Bromofluorobenzene 92.2 Limits: 70-130%03/16/23 22:01100 ENM V30957
Surrogate: Dibromofluoromethane 94.8 Limits: 70-130%03/16/23 22:01100 ENM V30957
Surrogate: 1,2-Dichloroethane - d4 87.8 Limits: 70-130%03/16/23 22:01100 ENM V30957
Surrogate: Toluene-d8 89.2 Limits: 70-130%03/16/23 22:01100 ENM V30957
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 18 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-4
90878 Matrix:
3/7/2023 13:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Benzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Bromobenzene 1 03/16/23 17:37 6200BENM
<1.00 µg/L 1.00Bromochloromethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Bromodichloromethane 1 03/16/23 17:37 6200BENM
<5.00 µg/L 5.00Bromoform 1 03/16/23 17:37 6200BENM
<1.00 µg/L 1.00Bromomethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500n-Butylbenzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500sec-Butyl benzene 1 03/16/23 17:37 6200BENM
<2.00 µg/L 2.00tert-Butyl benzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Carbon Tetrachloride 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Chlorobenzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Chlorodibromomethane 1 03/16/23 17:37 6200BENM
<1.00 µg/L 1.00Chloroethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Chloroform 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Chloromethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5002-Chlorotoluene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5004-Chlorotoluene 1 03/16/23 17:37 6200BENM
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,2-Dibromoethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Dibromomethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 03/16/23 17:37 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 19 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-4
90878 Matrix:
3/7/2023 13:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 03/16/23 17:37 6200BENM
<5.00 µg/L 5.00Dichlorodifluoromethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,2-Dichloroethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,2-Dichloropropane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,3-Dichloropropane 1 03/16/23 17:37 6200BENM
<2.00 µg/L 2.002,2-Dichloropropane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,1-Dichloropropene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 03/16/23 17:37 6200BENM
<200 µg/L 200Ethanol 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Ethylbenzene 1 03/16/23 17:37 6200BENM
<3.00 µg/L 3.00Hexachlorobutadiene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Isopropylbenzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5004-Isopropyl toluene 1 03/16/23 17:37 6200BENM
<1.00 µg/L 1.002-Hexanone 1 03/16/23 17:37 6200BENM
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 03/16/23 17:37 6200BENM
<2.00 µg/L 2.00Methylene Chloride 1 03/16/23 17:37 6200BENM
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 03/16/23 17:37 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 20 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-4
90878 Matrix:
3/7/2023 13:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 03/16/23 17:37 6200BENM
<1.00 µg/L 1.00Naphthalene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500n-Propylbenzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Styrene 1 03/16/23 17:37 6200BENM
<10.0 µg/L 10.0tert-Amyl Alcohol (TAA)1 03/16/23 17:37 6200BENM
<10.0 µg/L 10.0tert-Amyl Methyl Ether (TAME)1 03/16/23 17:37 6200BENM
<10.0 µg/L 10.0tert-Butyl Alcohol (TBA)1 03/16/23 17:37 6200BENM
<10.0 µg/L 10.0Ethyl Tertiary Butyl Ether (ETBE)1 03/16/23 17:37 6200BENM
<10.0 µg/L 10.0tert-Butyl formate (TBF)1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Tetrachloroethene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Toluene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Trichloroethene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Trichlorofluoromethane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 03/16/23 17:37 6200BENM
<5.00 µg/L 5.00Vinyl Acetate 1 03/16/23 17:37 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 21 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-4
90878 Matrix:
3/7/2023 13:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Vinyl Chloride 1 03/16/23 17:37 6200BENM
<1.00 µg/L 1.00m,p-Xylene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500o-Xylene 1 03/16/23 17:37 6200BENM
<0.500 µg/L 0.500Xylene (Total)1 03/16/23 17:37 6200B
Surrogate: 4-Bromofluorobenzene 87.2 Limits: 70-130%03/16/23 17:371 ENM V30957
Surrogate: Dibromofluoromethane 91.2 Limits: 70-130%03/16/23 17:371 ENM V30957
Surrogate: 1,2-Dichloroethane - d4 80.2 Limits: 70-130%03/16/23 17:371 ENM V30957
Surrogate: Toluene-d8 93.0 Limits: 70-130%03/16/23 17:371 ENM V30957
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 22 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-5
90879 Matrix:
3/7/2023 12:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Benzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Bromobenzene 1 03/16/23 18:01 6200BENM
<1.00 µg/L 1.00Bromochloromethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Bromodichloromethane 1 03/16/23 18:01 6200BENM
<5.00 µg/L 5.00Bromoform 1 03/16/23 18:01 6200BENM
<1.00 µg/L 1.00Bromomethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500n-Butylbenzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500sec-Butyl benzene 1 03/16/23 18:01 6200BENM
<2.00 µg/L 2.00tert-Butyl benzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Carbon Tetrachloride 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Chlorobenzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Chlorodibromomethane 1 03/16/23 18:01 6200BENM
<1.00 µg/L 1.00Chloroethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Chloroform 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Chloromethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5002-Chlorotoluene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5004-Chlorotoluene 1 03/16/23 18:01 6200BENM
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,2-Dibromoethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Dibromomethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 03/16/23 18:01 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 23 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-5
90879 Matrix:
3/7/2023 12:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 03/16/23 18:01 6200BENM
<5.00 µg/L 5.00Dichlorodifluoromethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,2-Dichloroethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,2-Dichloropropane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,3-Dichloropropane 1 03/16/23 18:01 6200BENM
<2.00 µg/L 2.002,2-Dichloropropane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,1-Dichloropropene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 03/16/23 18:01 6200BENM
<200 µg/L 200Ethanol 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Ethylbenzene 1 03/16/23 18:01 6200BENM
<3.00 µg/L 3.00Hexachlorobutadiene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Isopropylbenzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5004-Isopropyl toluene 1 03/16/23 18:01 6200BENM
<1.00 µg/L 1.002-Hexanone 1 03/16/23 18:01 6200BENM
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 03/16/23 18:01 6200BENM
<2.00 µg/L 2.00Methylene Chloride 1 03/16/23 18:01 6200BENM
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 03/16/23 18:01 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 24 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-5
90879 Matrix:
3/7/2023 12:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 03/16/23 18:01 6200BENM
<1.00 µg/L 1.00Naphthalene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500n-Propylbenzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Styrene 1 03/16/23 18:01 6200BENM
<10.0 µg/L 10.0tert-Amyl Alcohol (TAA)1 03/16/23 18:01 6200BENM
<10.0 µg/L 10.0tert-Amyl Methyl Ether (TAME)1 03/16/23 18:01 6200BENM
<10.0 µg/L 10.0tert-Butyl Alcohol (TBA)1 03/16/23 18:01 6200BENM
<10.0 µg/L 10.0Ethyl Tertiary Butyl Ether (ETBE)1 03/16/23 18:01 6200BENM
<10.0 µg/L 10.0tert-Butyl formate (TBF)1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Tetrachloroethene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Toluene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Trichloroethene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Trichlorofluoromethane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 03/16/23 18:01 6200BENM
<5.00 µg/L 5.00Vinyl Acetate 1 03/16/23 18:01 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 25 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:MW-5
90879 Matrix:
3/7/2023 12:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Vinyl Chloride 1 03/16/23 18:01 6200BENM
<1.00 µg/L 1.00m,p-Xylene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500o-Xylene 1 03/16/23 18:01 6200BENM
<0.500 µg/L 0.500Xylene (Total)1 03/16/23 18:01 6200B
Surrogate: 4-Bromofluorobenzene 88.6 Limits: 70-130%03/16/23 18:011 ENM V30957
Surrogate: Dibromofluoromethane 93.4 Limits: 70-130%03/16/23 18:011 ENM V30957
Surrogate: 1,2-Dichloroethane - d4 86.2 Limits: 70-130%03/16/23 18:011 ENM V30957
Surrogate: Toluene-d8 89.4 Limits: 70-130%03/16/23 18:011 ENM V30957
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 26 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:WSW-2
90880 Matrix:
3/7/2023 15:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Benzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Bromobenzene 1 03/16/23 18:25 6200BENM
<1.00 µg/L 1.00Bromochloromethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Bromodichloromethane 1 03/16/23 18:25 6200BENM
<5.00 µg/L 5.00Bromoform 1 03/16/23 18:25 6200BENM
<1.00 µg/L 1.00Bromomethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500n-Butylbenzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500sec-Butyl benzene 1 03/16/23 18:25 6200BENM
<2.00 µg/L 2.00tert-Butyl benzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Carbon Tetrachloride 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Chlorobenzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Chlorodibromomethane 1 03/16/23 18:25 6200BENM
<1.00 µg/L 1.00Chloroethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Chloroform 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Chloromethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5002-Chlorotoluene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5004-Chlorotoluene 1 03/16/23 18:25 6200BENM
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,2-Dibromoethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Dibromomethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 03/16/23 18:25 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 27 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:WSW-2
90880 Matrix:
3/7/2023 15:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 03/16/23 18:25 6200BENM
<5.00 µg/L 5.00Dichlorodifluoromethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,2-Dichloroethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,2-Dichloropropane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,3-Dichloropropane 1 03/16/23 18:25 6200BENM
<2.00 µg/L 2.002,2-Dichloropropane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,1-Dichloropropene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 03/16/23 18:25 6200BENM
<200 µg/L 200Ethanol 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Ethylbenzene 1 03/16/23 18:25 6200BENM
<3.00 µg/L 3.00Hexachlorobutadiene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Isopropylbenzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5004-Isopropyl toluene 1 03/16/23 18:25 6200BENM
<1.00 µg/L 1.002-Hexanone 1 03/16/23 18:25 6200BENM
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 03/16/23 18:25 6200BENM
<2.00 µg/L 2.00Methylene Chloride 1 03/16/23 18:25 6200BENM
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 03/16/23 18:25 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 28 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:WSW-2
90880 Matrix:
3/7/2023 15:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 03/16/23 18:25 6200BENM
<1.00 µg/L 1.00Naphthalene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500n-Propylbenzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Styrene 1 03/16/23 18:25 6200BENM
<10.0 µg/L 10.0tert-Amyl Alcohol (TAA)1 03/16/23 18:25 6200BENM
<10.0 µg/L 10.0tert-Amyl Methyl Ether (TAME)1 03/16/23 18:25 6200BENM
<10.0 µg/L 10.0tert-Butyl Alcohol (TBA)1 03/16/23 18:25 6200BENM
<10.0 µg/L 10.0Ethyl Tertiary Butyl Ether (ETBE)1 03/16/23 18:25 6200BENM
<10.0 µg/L 10.0tert-Butyl formate (TBF)1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Tetrachloroethene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Toluene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Trichloroethene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Trichlorofluoromethane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 03/16/23 18:25 6200BENM
<5.00 µg/L 5.00Vinyl Acetate 1 03/16/23 18:25 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 29 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:WSW-2
90880 Matrix:
3/7/2023 15:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Vinyl Chloride 1 03/16/23 18:25 6200BENM
<1.00 µg/L 1.00m,p-Xylene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500o-Xylene 1 03/16/23 18:25 6200BENM
<0.500 µg/L 0.500Xylene (Total)1 03/16/23 18:25 6200B
Surrogate: 4-Bromofluorobenzene 90.2 Limits: 70-130%03/16/23 18:251 ENM V30957
Surrogate: Dibromofluoromethane 92.2 Limits: 70-130%03/16/23 18:251 ENM V30957
Surrogate: 1,2-Dichloroethane - d4 80.2 Limits: 70-130%03/16/23 18:251 ENM V30957
Surrogate: Toluene-d8 91.2 Limits: 70-130%03/16/23 18:251 ENM V30957
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 30 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:Field Blank
90881 Matrix:
3/7/2023 14:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Benzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Bromobenzene 1 03/16/23 14:25 6200BENM
<1.00 µg/L 1.00Bromochloromethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Bromodichloromethane 1 03/16/23 14:25 6200BENM
<5.00 µg/L 5.00Bromoform 1 03/16/23 14:25 6200BENM
<1.00 µg/L 1.00Bromomethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500n-Butylbenzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500sec-Butyl benzene 1 03/16/23 14:25 6200BENM
<2.00 µg/L 2.00tert-Butyl benzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Carbon Tetrachloride 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Chlorobenzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Chlorodibromomethane 1 03/16/23 14:25 6200BENM
<1.00 µg/L 1.00Chloroethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Chloroform 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Chloromethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5002-Chlorotoluene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5004-Chlorotoluene 1 03/16/23 14:25 6200BENM
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,2-Dibromoethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Dibromomethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 03/16/23 14:25 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 31 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:Field Blank
90881 Matrix:
3/7/2023 14:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 03/16/23 14:25 6200BENM
<5.00 µg/L 5.00Dichlorodifluoromethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,2-Dichloroethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,1-Dichloroethene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,2-Dichloropropane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,3-Dichloropropane 1 03/16/23 14:25 6200BENM
<2.00 µg/L 2.002,2-Dichloropropane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,1-Dichloropropene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 03/16/23 14:25 6200BENM
<200 µg/L 200Ethanol 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Ethylbenzene 1 03/16/23 14:25 6200BENM
<3.00 µg/L 3.00Hexachlorobutadiene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Isopropylbenzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5004-Isopropyl toluene 1 03/16/23 14:25 6200BENM
<1.00 µg/L 1.002-Hexanone 1 03/16/23 14:25 6200BENM
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 03/16/23 14:25 6200BENM
<2.00 µg/L 2.00Methylene Chloride 1 03/16/23 14:25 6200BENM
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 03/16/23 14:25 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 32 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:Field Blank
90881 Matrix:
3/7/2023 14:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 03/16/23 14:25 6200BENM
<1.00 µg/L 1.00Naphthalene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500n-Propylbenzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Styrene 1 03/16/23 14:25 6200BENM
<10.0 µg/L 10.0tert-Amyl Alcohol (TAA)1 03/16/23 14:25 6200BENM
<10.0 µg/L 10.0tert-Amyl Methyl Ether (TAME)1 03/16/23 14:25 6200BENM
<10.0 µg/L 10.0tert-Butyl Alcohol (TBA)1 03/16/23 14:25 6200BENM
<10.0 µg/L 10.0Ethyl Tertiary Butyl Ether (ETBE)1 03/16/23 14:25 6200BENM
<10.0 µg/L 10.0tert-Butyl formate (TBF)1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Tetrachloroethene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Toluene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Trichloroethene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Trichlorofluoromethane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 03/16/23 14:25 6200BENM
<5.00 µg/L 5.00Vinyl Acetate 1 03/16/23 14:25 6200BENM
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 33 of 43
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-069-0106
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Liz Allyn
Cary
Received : 03/10/2023
Forest Oaks Circle K
Report Date : 03/20/2023
Sample ID :
Lab No :
Sampled:Field Blank
90881 Matrix:
3/7/2023 14:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Vinyl Chloride 1 03/16/23 14:25 6200BENM
<1.00 µg/L 1.00m,p-Xylene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500o-Xylene 1 03/16/23 14:25 6200BENM
<0.500 µg/L 0.500Xylene (Total)1 03/16/23 14:25 6200B
Surrogate: 4-Bromofluorobenzene 89.4 Limits: 70-130%03/16/23 14:251 ENM V30957
Surrogate: Dibromofluoromethane 92.6 Limits: 70-130%03/16/23 14:251 ENM V30957
Surrogate: 1,2-Dichloroethane - d4 81.2 Limits: 70-130%03/16/23 14:251 ENM V30957
Surrogate: Toluene-d8 89.8 Limits: 70-130%03/16/23 14:251 ENM V30957
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 34 of 43
Quality Control Data
23-069-0106Report No:
Project Description:
Client ID:Withers & Ravenel
Forest Oaks Circle K
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V30957QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V30955
Associated Lab Samples: 90875, 90876, 90877, 90878, 90879, 90880, 90881
LRB-V30955 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
03/16/23 13:3710.0< 10.0µg/LAcetone
03/16/23 13:370.500< 0.500µg/LBenzene
03/16/23 13:370.500< 0.500µg/LBromobenzene
03/16/23 13:371.00< 1.00µg/LBromochloromethane
03/16/23 13:370.500< 0.500µg/LBromodichloromethane
03/16/23 13:375.00< 5.00µg/LBromoform
03/16/23 13:371.00< 1.00µg/LBromomethane
03/16/23 13:370.500< 0.500µg/Ln-Butylbenzene
03/16/23 13:370.500< 0.500µg/Lsec-Butyl benzene
03/16/23 13:372.00< 2.00µg/Ltert-Butyl benzene
03/16/23 13:370.500< 0.500µg/LCarbon Tetrachloride
03/16/23 13:370.500< 0.500µg/LChlorobenzene
03/16/23 13:370.500< 0.500µg/LChlorodibromomethane
03/16/23 13:371.00< 1.00µg/LChloroethane
03/16/23 13:370.500< 0.500µg/LChloroform
03/16/23 13:370.500< 0.500µg/LChloromethane
03/16/23 13:370.500< 0.500µg/L2-Chlorotoluene
03/16/23 13:370.500< 0.500µg/L4-Chlorotoluene
03/16/23 13:372.00< 2.00µg/L1,2-Dibromo-3-Chloropropane
03/16/23 13:370.500< 0.500µg/L1,2-Dibromoethane
03/16/23 13:370.500< 0.500µg/LDibromomethane
03/16/23 13:370.500< 0.500µg/L1,2-Dichlorobenzene
03/16/23 13:370.500< 0.500µg/L1,3-Dichlorobenzene
03/16/23 13:370.500< 0.500µg/L1,4-Dichlorobenzene
03/16/23 13:375.00< 5.00µg/LDichlorodifluoromethane
03/16/23 13:370.500< 0.500µg/L1,1-Dichloroethane
03/16/23 13:370.500< 0.500µg/L1,2-Dichloroethane
Page 1 of 7Date:03/20/2023 05:42 PM
Page 35 of 43
Quality Control Data
23-069-0106Report No:
Project Description:
Client ID:Withers & Ravenel
Forest Oaks Circle K
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V30957QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V30955
Associated Lab Samples: 90875, 90876, 90877, 90878, 90879, 90880, 90881
LRB-V30955 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
03/16/23 13:370.500< 0.500µg/L1,1-Dichloroethene
03/16/23 13:370.500< 0.500µg/Lcis-1,2-Dichloroethene
03/16/23 13:370.500< 0.500µg/Ltrans-1,2-Dichloroethene
03/16/23 13:370.500< 0.500µg/L1,2-Dichloropropane
03/16/23 13:370.500< 0.500µg/L1,3-Dichloropropane
03/16/23 13:372.00< 2.00µg/L2,2-Dichloropropane
03/16/23 13:370.500< 0.500µg/L1,1-Dichloropropene
03/16/23 13:370.500< 0.500µg/Lcis-1,3-Dichloropropene
03/16/23 13:370.500< 0.500µg/Ltrans-1,3-Dichloropropene
03/16/23 13:37200< 200µg/LEthanol
03/16/23 13:370.500< 0.500µg/LEthylbenzene
03/16/23 13:373.00< 3.00µg/LHexachlorobutadiene
03/16/23 13:370.500< 0.500µg/LDi-Isopropyl Ether (DIPE)
03/16/23 13:370.500< 0.500µg/LIsopropylbenzene
03/16/23 13:370.500< 0.500µg/L4-Isopropyl toluene
03/16/23 13:371.00< 1.00µg/L2-Hexanone
03/16/23 13:375.00< 5.00µg/LMethyl Ethyl Ketone (MEK)
03/16/23 13:372.00< 2.00µg/LMethylene Chloride
03/16/23 13:371.00< 1.00µg/LMethyl tert-butyl ether (MTBE)
03/16/23 13:371.00< 1.00µg/L4-Methyl-2-Pentanone
03/16/23 13:371.00< 1.00µg/LNaphthalene
03/16/23 13:370.500< 0.500µg/Ln-Propylbenzene
03/16/23 13:370.500< 0.500µg/LStyrene
03/16/23 13:3710.0< 10.0µg/Ltert-Amyl Alcohol (TAA)
03/16/23 13:3710.0< 10.0µg/Ltert-Amyl Methyl Ether (TAME)
03/16/23 13:3710.0< 10.0µg/Ltert-Butyl Alcohol (TBA)
03/16/23 13:3710.0< 10.0µg/LEthyl Tertiary Butyl Ether (ETBE)
Page 2 of 7Date:03/20/2023 05:42 PM
Page 36 of 43
Quality Control Data
23-069-0106Report No:
Project Description:
Client ID:Withers & Ravenel
Forest Oaks Circle K
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V30957QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V30955
Associated Lab Samples: 90875, 90876, 90877, 90878, 90879, 90880, 90881
LRB-V30955 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
03/16/23 13:3710.0< 10.0µg/Ltert-Butyl formate (TBF)
03/16/23 13:370.500< 0.500µg/L1,1,1,2-Tetrachloroethane
03/16/23 13:370.500< 0.500µg/L1,1,2,2-Tetrachloroethane
03/16/23 13:370.500< 0.500µg/LTetrachloroethene
03/16/23 13:370.500< 0.500µg/LToluene
03/16/23 13:370.500< 0.500µg/L1,2,3-Trichlorobenzene
03/16/23 13:370.500< 0.500µg/L1,2,4-Trichlorobenzene
03/16/23 13:370.500< 0.500µg/L1,1,1-Trichloroethane
03/16/23 13:370.500< 0.500µg/L1,1,2-Trichloroethane
03/16/23 13:370.500< 0.500µg/LTrichloroethene
03/16/23 13:370.500< 0.500µg/LTrichlorofluoromethane
03/16/23 13:370.500< 0.500µg/L1,2,3-Trichloropropane
03/16/23 13:370.500< 0.500µg/L1,2,4-Trimethylbenzene
03/16/23 13:370.500< 0.500µg/L1,3,5-Trimethylbenzene
03/16/23 13:375.00< 5.00µg/LVinyl Acetate
03/16/23 13:370.500< 0.500µg/LVinyl Chloride
03/16/23 13:371.00< 1.00µg/Lm,p-Xylene
03/16/23 13:370.500< 0.500µg/Lo-Xylene
03/16/23 13:374-Bromofluorobenzene (S)89.4 70-130
03/16/23 13:37Dibromofluoromethane (S)93.8 70-130
03/16/23 13:371,2-Dichloroethane - d4 (S)84.0 70-130
03/16/23 13:37Toluene-d8 (S)91.2 70-130
Page 3 of 7Date:03/20/2023 05:42 PM
Page 37 of 43
Quality Control Data
23-069-0106Report No:
Project Description:
Client ID:Withers & Ravenel
Forest Oaks Circle K
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V30957QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V30955
LCS-V30955 LCSD-V30955Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
28.7 71.771.528.640.0µg/LAcetone 40-160 0.3 20.0
20.8 10410721.420.0µg/LBenzene 70-130 2.8 20.0
16.5 82.585.017.020.0µg/LBromobenzene 70-130 2.9 20.0
22.4 11211022.020.0µg/LBromochloromethane 70-130 1.8 20.0
19.8 99.099.519.920.0µg/LBromodichloromethane 70-130 0.5 20.0
19.7 98.596.019.220.0µg/LBromoform 70-130 2.5 20.0
24.7 12412825.520.0µg/LBromomethane 60-140 3.1 20.0
17.7 88.595.519.120.0µg/Ln-Butylbenzene 70-130 7.6 20.0
16.9 84.592.018.420.0µg/Lsec-Butyl benzene 70-130 8.4 20.0
16.1 80.588.517.720.0µg/Ltert-Butyl benzene 70-130 9.4 20.0
21.0 10511021.920.0µg/LCarbon Tetrachloride 70-130 4.1 20.0
19.1 95.510120.220.0µg/LChlorobenzene 70-130 5.5 20.0
19.0 95.093.018.620.0µg/LChlorodibromomethane 70-130 2.1 20.0
22.0 11012124.120.0µg/LChloroethane 60-140 9.1 20.0
20.0 10010320.520.0µg/LChloroform 70-130 2.4 20.0
17.2 86.091.018.220.0µg/LChloromethane 60-140 5.6 20.0
15.9 79.584.516.920.0µg/L2-Chlorotoluene 70-130 6.0 20.0
16.1 80.586.017.220.0µg/L4-Chlorotoluene 70-130 6.6 20.0
20.7 10486.517.320.0µg/L1,2-Dibromo-3-Chloropropane 70-130 17.8 20.0
19.9 99.595.019.020.0µg/L1,2-Dibromoethane 70-130 4.6 20.0
21.6 10810120.220.0µg/LDibromomethane 70-130 6.6 20.0
17.5 87.591.018.220.0µg/L1,2-Dichlorobenzene 70-130 3.9 20.0
17.4 87.093.018.620.0µg/L1,3-Dichlorobenzene 70-130 6.6 20.0
17.0 85.090.518.120.0µg/L1,4-Dichlorobenzene 70-130 6.2 20.0
16.4 82.085.017.020.0µg/LDichlorodifluoromethane 60-140 3.5 20.0
19.8 99.092.518.520.0µg/L1,1-Dichloroethane 70-130 6.7 20.0
Page 4 of 7Date:03/20/2023 05:42 PM
Page 38 of 43
Quality Control Data
23-069-0106Report No:
Project Description:
Client ID:Withers & Ravenel
Forest Oaks Circle K
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V30957QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V30955
LCS-V30955 LCSD-V30955Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
19.6 98.092.518.520.0µg/L1,2-Dichloroethane 70-130 5.7 20.0
21.2 10611322.620.0µg/L1,1-Dichloroethene 70-130 6.3 20.0
19.8 99.010120.220.0µg/Lcis-1,2-Dichloroethene 70-130 2.0 20.0
19.3 96.599.519.920.0µg/Ltrans-1,2-Dichloroethene 70-130 3.0 20.0
20.8 10410521.020.0µg/L1,2-Dichloropropane 70-130 0.9 20.0
19.0 95.094.018.820.0µg/L1,3-Dichloropropane 70-130 1.0 20.0
21.3 10711322.520.0µg/L2,2-Dichloropropane 70-130 5.4 20.0
21.4 10711222.320.0µg/L1,1-Dichloropropene 70-130 4.1 20.0
21.4 10710621.120.0µg/Lcis-1,3-Dichloropropene 70-130 1.4 20.0
22.5 11310721.320.0µg/Ltrans-1,3-Dichloropropene 70-130 5.4 20.0
646 129118591500µg/LEthanol 60-140 8.8 20.0
17.8 89.093.518.720.0µg/LEthylbenzene 70-130 4.9 20.0
16.8 84.093.518.720.0µg/LHexachlorobutadiene 70-130 10.7 20.0
20.3 10299.519.920.0µg/LDi-Isopropyl Ether (DIPE)70-130 1.9 20.0
16.6 83.091.018.220.0µg/LIsopropylbenzene 70-130 9.1 20.0
17.5 87.594.018.820.0µg/L4-Isopropyl toluene 70-130 7.1 20.0
17.8 89.075.015.020.0µg/L2-Hexanone 60-140 17.0 20.0
17.4 87.077.015.420.0µg/LMethyl Ethyl Ketone (MEK)60-140 12.1 20.0
19.1 95.597.519.520.0µg/LMethylene Chloride 70-130 2.0 20.0
21.1 10697.019.420.0µg/LMethyl tert-butyl ether (MTBE)70-130 8.3 20.0
22.5 11397.019.420.0µg/L4-Methyl-2-Pentanone 60-140 14.7 20.0
21.0 10591.018.220.0µg/LNaphthalene 70-130 14.2 20.0
16.2 81.089.517.920.0µg/Ln-Propylbenzene 70-130 9.9 20.0
19.1 95.510120.120.0µg/LStyrene 70-130 5.1 20.0
18.9 94.511222.420.0µg/Ltert-Amyl Alcohol (TAA)40-140 16.9 20.0
47.5 11996.238.540.0µg/Ltert-Amyl Methyl Ether (TAME)40-140 20.9*20.0
Page 5 of 7* QC Fail Date:03/20/2023 05:42 PM
Page 39 of 43
Quality Control Data
23-069-0106Report No:
Project Description:
Client ID:Withers & Ravenel
Forest Oaks Circle K
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V30957QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V30955
LCS-V30955 LCSD-V30955Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
46.9 11798.739.540.0µg/Ltert-Butyl Alcohol (TBA)40-140 17.1 20.0
46.4 11611244.640.0µg/LEthyl Tertiary Butyl Ether (ETBE)70-130 3.9 20.0
47.9 12011345.140.0µg/Ltert-Butyl formate (TBF)40-140 6.0 20.0
18.6 93.095.519.120.0µg/L1,1,1,2-Tetrachloroethane 70-130 2.6 20.0
19.8 99.093.018.620.0µg/L1,1,2,2-Tetrachloroethane 70-130 6.2 20.0
19.4 97.010521.020.0µg/LTetrachloroethene 70-130 7.9 20.0
21.0 10510821.520.0µg/LToluene 70-130 2.3 20.0
20.2 10194.018.820.0µg/L1,2,3-Trichlorobenzene 70-130 7.1 20.0
19.4 97.097.019.420.0µg/L1,2,4-Trichlorobenzene 70-130 0.0 20.0
19.5 97.510220.420.0µg/L1,1,1-Trichloroethane 70-130 4.5 20.0
22.7 11410520.920.0µg/L1,1,2-Trichloroethane 70-130 8.2 20.0
20.8 10410621.220.0µg/LTrichloroethene 70-130 1.9 20.0
23.1 11612224.320.0µg/LTrichlorofluoromethane 60-140 5.0 20.0
19.0 95.085.017.020.0µg/L1,2,3-Trichloropropane 70-130 11.1 20.0
16.6 83.089.017.820.0µg/L1,2,4-Trimethylbenzene 70-130 6.9 20.0
16.5 82.591.018.220.0µg/L1,3,5-Trimethylbenzene 70-130 9.7 20.0
16.6 83.089.517.920.0µg/LVinyl Acetate 60-140 7.5 20.0
20.2 10110420.720.0µg/LVinyl Chloride 60-140 2.4 20.0
37.6 94.010040.140.0µg/Lm,p-Xylene 70-130 6.4 20.0
17.9 89.595.519.120.0µg/Lo-Xylene 70-130 6.4 20.0
90.890.44-Bromofluorobenzene (S)70-130
95.494.6Dibromofluoromethane (S)70-130
92.082.01,2-Dichloroethane - d4 (S)70-130
90.893.8Toluene-d8 (S)70-130
Page 6 of 7Date:03/20/2023 05:42 PM
Page 40 of 43
Quality Control Data
23-069-0106Report No:
Project Description:
Client ID:Withers & Ravenel
Forest Oaks Circle K
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V30984QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V30983
Associated Lab Samples: 90875, 90876
LRB-V30983 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
03/17/23 15:350.500< 0.500µg/LBenzene
03/17/23 15:350.500< 0.500µg/LEthylbenzene
03/17/23 15:3510.0< 10.0µg/Ltert-Amyl Alcohol (TAA)
03/17/23 15:350.500< 0.500µg/LToluene
03/17/23 15:351.00< 1.00µg/Lm,p-Xylene
03/17/23 15:354-Bromofluorobenzene (S)96.0 70-130
03/17/23 15:35Dibromofluoromethane (S)87.4 70-130
03/17/23 15:351,2-Dichloroethane - d4 (S)89.6 70-130
03/17/23 15:35Toluene-d8 (S)98.0 70-130
LCS-V30983 LCSD-V30983Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
16.7 83.586.517.320.0µg/LBenzene 70-130 3.5 20.0
16.2 81.084.516.920.0µg/LEthylbenzene 70-130 4.2 20.0
13.4 67.085.017.020.0µg/Ltert-Amyl Alcohol (TAA)40-140 23.6*20.0
15.8 79.081.016.220.0µg/LToluene 70-130 2.5 20.0
34.1 85.287.034.840.0µg/Lm,p-Xylene 70-130 2.0 20.0
98.298.24-Bromofluorobenzene (S)70-130
87.487.0Dibromofluoromethane (S)70-130
90.490.01,2-Dichloroethane - d4 (S)70-130
97.697.8Toluene-d8 (S)70-130
Page 7 of 7* QC Fail Date:03/20/2023 05:42 PM
Page 41 of 43
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:23-069-0106
Withers & Ravenel
01221
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:IRT15 2.5C
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:Angela D Overcash Date & Time:03/10/2023 18:18:22
Special precautions or instructions included?
Comments:
Page 42 of 43
Page 43 of 43
WithersRavenel
Our People. Your Success.

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)

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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)

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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)

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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.