MO-5961_21112_CA_MRP_20231109

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

GROUNDWATER MONITORING REPORT

Triangle Texaco #2
NCDEQ Incident # 21112
UST # MO-5861
201 North Main St
Mount Holly, Gaston County, North Carolina
WithersRavenel Project No. 23-0307-ET

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
November 9, 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 | Pittsboro | Raleigh | Southern Pines | Wilmington
November 9, 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: Mr. Scott Ryals, P.E. Re: Groundwater Monitoring Report Triangle Texaco #2
201 North Main Street Mount Holly, Gaston County, North Carolina Groundwater Incident Number: 21112 UST Number: MO-5861
WR Project Number: 23-0307-ET
Mr. Ryals:
WithersRavenel, Inc. (WR) has completed this Monitoring Report to document groundwater
sampling activities completed at the facility in association with our proposal, numbered Task
Authorization (TA) TA-03, for the above referenced site, approved by the Federal & State Lead Program on August 12, 2023. The enclosed report summarizes results of the recently completed monitoring activities. WR appreciates the opportunity to be of service to the Federal & State Lead Program. Should you
have any questions regarding the attached, please contact us at [phone]. Cordially, WithersRavenel

Flora D’Souza, CHMM Elizabeth A. Allyn, P.G. Environmental Project Scientist II Environmental Project Geologist II
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Triangle Texaco #2– NCDEQ Incident #21112 WR Project # 23-0307-ET Groundwater Monitoring Report November 2023 i
TABLE OF CONTENTS

SECTION A. SITE INFORMATION ..................................................................................................................... 1
SECTION B. EXECUTIVE SUMMARY ................................................................................................................ 3
SECTION C. SITE HISTORY AND CHARACTERIZATION ............................................................................ 4
SECTION D. GROUNDWATER SAMPLING – September 2023 ................................................................ 7
SECTION E. CONCLUSIONS AND RECOMMENDATIONS ....................................................................... 8

FIGURES
Figure 1 General Location Map
Figure 2 Site Map
Figure 3 Groundwater Hydraulic Gradient Map – September 27, 2023
Figure 4 Groundwater Analytical Results Map – September 2023
Figure 5 Benzene Isoconcentration Map – September 27, 2023
Figure 6 Receptor Map

TABLES
Table B-1 Site History: UST/AST System & Other Release Information
Table B-4 Summary of Groundwater Analytical Results
Table B-7 Monitoring Well Construction Information and Liquid Level Data

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

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Triangle Texaco #2 – NCDEQ Incident #21112 WR Project # 23-0307-ET Groundwater Monitoring Report November 2023 1
SECTION A. SITE INFORMATION
1. Site Identification
Date of Report: November 9, 2023
Facility I.D.: 00-0-0000016627
Incident No.: 21112
UST No.: MO-5861
Site Risk: High
Site Rank: H195D
Land Use Category: Commercial
Site Name: Triangle Texaco #2
Site Location: 201 North Main Street
Nearest City/Town: Mount Holly
County: Gaston
Description of Geographical Data Point: UST Basin
Location Method: NCDEQ UST Incidents Map
Latitude: 35.300748°
Longitude: -81.016627°
2. Contact Information
Responsible Party: Petroleum World, Inc.
Address: 681 NC 120 Highway, Mooresboro, NC 28114
Phone: N/A

Property Owner: Chappell Builders LLC
Address: 641 Alexis High Shoals Road, Dallas, NC 28034
Phone: [phone]

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

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

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Triangle Texaco #2 – NCDEQ Incident #21112 WR Project # 23-0307-ET Groundwater Monitoring Report November 2023 3
SECTION B. EXECUTIVE SUMMARY
1. Summary of Activities Associated with Current TA
WithersRavenel, Inc. (WR) conducted a groundwater sampling event at the Triangle Texaco #2 site in Mount Holly, Gaston County, North Carolina in association with task authorizations (TA) TA-03
under North Carolina Department of Environmental Quality (NCDEQ) Contract #N70522-C. The scope of work for this project included the gauging, purging, and sampling of existing monitoring wells MW-1, MW-1A, MW-2, MW-2A, MW-3, MW-3A, MW-4A, MW-5, MW-6, MW-7, MW-8, MW-9, MW-10, MW-11, MW-12, MW-13, MW-14, MW-16, MW-17, MW-20, MW-21, DMW-
1, and DMW-2. Monitoring wells MW-2A, MW-3, MW-4A, MW-5, MW-7, MW-9, MW-11, MW-13, MW-16, MW-17, MW-20, and MW-21 were not located and therefore, not able to be sampled.
2. Soil, Groundwater and LNAPL Assessment Information
Soils No soil samples were collected by WR in association with this task authorization. In 1999, one 6,000-gallon gasoline underground storage tank (UST) was removed. Soil samples collected beneath the 6,000-gallon UST (T-1 and T-2) and soil samples were collected beneath the product
piping and dispenser islands. Soil samples T-1, T-2, D-2, and P-1 were above the state action levels. Soil samples (SB-1 and SB-1A) collected near the pump island during the Phase I and Phase II Limited Site Assessment (LSA) conducted in February and April 2000 were above the soil-to-water maximum soil contaminant concentrations (MSCCs). Twenty additional soil samples were collected in March 2001 and six soil samples (SB-14, SB-15, SB-16, SB-18, SB-19, and SB-22) were above
the soil-to-water MSCCs. Table B-1 includes information regarding the UST that was formerly utilized on the property. Groundwater WR collected groundwater samples from site monitoring wells MW-1, MW-1A, MW-2, MW-3A,
MW-6, MW-8, MW-10, MW-12, MW-14, DMW-1, and DMW-2 on September 27, 2023. The groundwater samples were submitted for laboratory analysis of volatile organic carbons (VOCs) by SM6200B.
• Laboratory analytical results indicated that no petroleum compounds analyzed exceeded the Gross Contaminant Level (GCL).
• Laboratory analytical results indicated that benzene exceeded the 15B NCAC 02B Surface
Water Quality Standard (2B Standard) in monitoring wells MW-1, MW-1A, and MW-8 and toluene exceeded the 2B Standard in monitoring wells MW-1 and MW-8.
• Laboratory analytical results of VOCs for MW-2 and MW-6 were below 2B Standards.

• No petroleum compounds were detected above the laboratory Method Detection Limits (MDLs) in monitoring wells MW-3A, MW-12, MW-14, DMW-1, and DMW-2.

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Triangle Texaco #2 – NCDEQ Incident #21112 WR Project # 23-0307-ET Groundwater Monitoring Report November 2023 4
Light Non-Aqueous Phase Liquid (LNAPL) LNAPL was not measured in any of the monitoring wells sampled by WR in September 2023. LNAPL was measured in monitoring well MW-1 at various thicknesses with the most recent
detection in May 2012, and in monitoring well MW-6 in September 2001. 3. Receptor Information A receptor survey was conducted in 2000 by Shield Engineering, Inc. (Shield). According to the
2000 receptor information, no water supply wells were identified within 1,500 feet of the source area. Dutchman’s Creek is located approximately 250 feet to the north-northeast of the source area. A receptor map is included as Figure 6. Municipal water is available to the site and surrounding area.
4. Remediation Activities Based on WR’s review of historical files available for the site, the following remedial activities have been completed at the location:

• The November 8, 2001 Corrective Action Plan (CAP) report states that 60.77 gallons of LNAPL were removed from MW-1, MW-1A, MW-2, and MW-6 during four Aggressive Fluid Vapor
Recovery (AFVR) events, hand bailing, and/or absorbent socks.
• February 2015 – A pump-and-treat remediation system was installed, and operation and maintenance was performed by Shield until December 2016. Terracon Consultants, Inc. (Terracon) operated the remediation system between July 2018 and December 2022.

5. Recommendations Based on the results of assessment and monitoring activities conducted at the site in association with these TAs, WR recommends the following:

• Repair on-site remediation system and continue operation of the system focusing on dual-phase extraction (DPE) wells DPE-1, DPE-2, and DPE-3.
• Semi-annual monitoring of MW-1, MW-1A, MW-2, MW-8, and MW-10.

SECTION C. SITE HISTORY AND CHARACTERIZATION The following information summarizes the site history and characterization.

1. UST Information The site is located at 201 North Main Street in Mount Holly, Gaston County, NC (Figure 1). The site is currently occupied by Gearheads Automotive, a vehicle repair shop and the groundwater
remediation system. The site was formerly operated as a vehicle repair shop with commercial fuel
sales. The property is bound along the north-northeast property boundary by Dutchman’s Creek.
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Triangle Texaco #2 – NCDEQ Incident #21112 WR Project # 23-0307-ET Groundwater Monitoring Report November 2023 5
One 6,000-gallon gasoline UST was removed in 199 and soil samples were not collected at the time of the UST removal. The initial release was reported in December 1999 following the removal of the UST.
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:
• December 1999 – According to the January 17, 2000 20-Day Report completed by Shield, one 6,000-gallon gasoline UST was removed on December 9, 1999. Product piping and the two dispenser islands were not removed during the UST closure activities. Two soil samples (T-1
and T-2) were collected beneath the UST and were analyzed for total petroleum hydrocarbons
gasoline range organics (TPH-GRO). Five soil samples were also collected beneath the dispenser island and product piping. Soil samples T-1, T-2, D-2, and P-1 were detected at concentrations above the state action level of 10 milligrams per kilogram (mg/kg). Risk based soil samples were not collected at the time of the UST removal.

• 2000 – Shield conducted a Phase I and Phase II LSA between February and April 2000, during which time monitoring wells MW-1A, MW-2A, and MW-3A were installed. Monitoring wells MW-1 through MW-7 and DMW-1 were previously installed as part of a separate release, Incident No. 10096. A Notice of No Further Action was issued for Incident No. 10096 on
December 14, 2021, stating that “any remaining assessment or remedial actions will be conducted under UST Incident #21112.”
• December 2000 – March 2001 – Shield completed a CSA between December 2000 and March
2001 which included the installation of monitoring wells MW-4A, MW-8 through MW-16, and one deep Type III monitoring well DMW-2, and collecting groundwater samples. Petroleum compounds were detected above 2L Standards in several monitoring wells. Twenty additional soil samples were collected in January 2001 and six soil samples (SB-14, SB-15, SB-16, SB-18, SB-19, and SB-22) were above the soil-to-water MSCCs.

• 2001 – Shield prepared a Corrective Action Plan (CAP). As part of the CAP, monitoring wells MW-17 through MW-21, recovery well RW-1 and soil vapor extraction (SVE) well SVE-1 were
installed between July 2001 and October 2001. Monitoring well MW-18 was abandoned as it
did not yield water. Petroleum compounds were detected above 2B Standards in monitoring wells MW-1A, MW-3, MW-3A, MW-4A, and MW-7 through MW-16 and benzene was detected above GCLs in monitoring well MW-10 during the September 2001 sampling event. The recommendations in the CAP included the installation of a dual-phase extraction and air
sparge remediation system.

• 2000 to 2016 – Shield conducted numerous groundwater sampling events between 2000 and 2016. LNAPL was detected in MW-1, MW-1A, MW-2, and MW-6 during one or more sampling events between 2000 and 2003. Benzene, MTBE, and/or naphthalene were detected above
GCLs during one or more sampling events in monitoring wells MW-1, MW-1A, MW-6, and MW-10, and DPE-1 between 2000 and 2015. Multiple petroleum compounds were detected
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Triangle Texaco #2 – NCDEQ Incident #21112 WR Project # 23-0307-ET Groundwater Monitoring Report November 2023 6
above 2B Standards in MW-1, MW-1A, MW-2, MW-6, MW-8, MW-10, DPE-1, DPE-2, DPE-3, DPE-4, and DPE-5 when sampled between 2000 and 2016.
• 2013 to 2016 – A New Technology Clean-up Plan (NTCP) was completed by Shield and submitted to NCDEQ in August 2013, and the NTCP was approved by NCDEQ in September 2013. DPE wells (DPE-2, DPE-3, DPE-5, and DPE-6) were installed in January 2014 and SVE-1 and RW-2 were converted to DPE-1 and DPE-4. The DPE remediation system was installed
and began operation on February 12, 2015. Shield operated the DPE remediation system from
February 2015 until December 2016.
• 2017 to 2022 – Terracon conducted numerous groundwater sampling events between
September 2017 and April 2022. Benzene was detected above GCLs during the 2017, 2018,
and 2019 sampling events in monitoring well MW-1. Multiple petroleum compounds were detected above 2B Standards in MW-1, MW-1A, MW-2, MW-8, and MW-10 between 2017 and 2022. Terracon restarted the DPE remediation system in July 2018 and performed monthly operations and maintenance on the system through December 2022.
• May 2023 – WR visited the site to restart the system. The system was restarted, and a leak was observed from the transfer pump. The system was left on, however, the system only operated approximately two hours before shutting down due to faulty float switch in the holding tank. After discussions with the NCDEQ Incident Manager, Scott Ryals, in early June
about the parts needed to repair the system, it was determined that the system would be left off and an evaluation would be made following the sampling of select monitoring wells.
• June 2023 – WR sampled monitoring wells MW-1, MW-1A, MW-2, MW-8, and MW-10.
Multiple petroleum compounds were detected above 2B Standards in MW-1, MW-1A, MW-2, MW-8, and MW-10 during the June 2023 sampling event. 3. Brief Description of Site Characteristics

The property is located in a commercial and residential area of Mount Holly, Gaston County, North Carolina (Figure 2). The property is currently occupied by Gearheads Automotive, a vehicle repair shop and the groundwater remediation system. The site was formerly operated as a vehicle repair shop with commercial fuel sales. The property is bound along the north-northeast property
boundary by Dutchman’s Creek. The USTs and dispensers have been removed.
4. Information on Receptors/Potential Receptors A receptor survey was conducted in 2000 by Shield. According to the 2000 receptor information,
no water supply wells were identified within 1,500 feet of the source area. Dutchman’s Creek is
located approximately 250 feet to the north-northeast of the source area. Municipal water is available to the site and surrounding area.

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Triangle Texaco #2 – NCDEQ Incident #21112 WR Project # 23-0307-ET Groundwater Monitoring Report November 2023 7
5. Regional and Site Geology and Hydrology The Geologic Map of the State of North Carolina depicts the site within the Charlotte and Milton Belts of the Piedmont Physiographic Province. The property is underlain by metamorphosed
quartz diorite.
According to the United States Department of Agricultural (USDA) Natural Resources
Conservation Service (NRCS) Web Soil Survey, soils in the source area consist of Urban land and
Cecil-Urban land complex (8 to 15 percent slopes). Urban land is impervious layers over human-
transported material. Cecil-Urban land complex is well drained, and the parent material is saprolite
derived from granite and gneiss and/or schist.

Groundwater ranged from a depth of 11.55 feet (ft) below the top of casing (ft-BTOC) in
monitoring well MW-14 and 24.20 feet BTOC in monitoring well MW-8 during the September
2023 sampling event.

SECTION D. GROUNDWATER SAMPLING – September 2023

On September 27, 2023, WR personnel mobilized to the subject property to perform groundwater sampling activities at the facility in association with TA-03 under NCDEQ Contract # N70522-C. The scope of work for this project included the gauging, purging, and sampling of existing
monitoring wells MW-1, MW-1A, MW-2, MW-2A, MW-3, MW-3A, MW-4A, MW-5, MW-6, MW-
7, MW-8, MW-9, MW-10, MW-11, MW-12, MW-13, MW-14, MW-16, MW-17, MW-20, MW-21, DMW-1, and DMW-2. Monitoring wells MW-2A, MW-3, MW-4A, MW-5, MW-7, MW-9, MW-11, MW-13, MW-16, MW-17, MW-20, and MW-21 were not located and therefore, not able to be sampled. The groundwater samples collected under TA-03 were submitted for laboratory
analysis of VOCs by SM6200B.
The following paragraphs describe the sampling activities and associated laboratory analytical results. Groundwater Sampling Activities
Prior to the purging and sampling of the site monitoring wells on September 27, 2023, WR
personnel opened and gauged those wells targeted for purging and sampling with an electronic water level indicator to determine the depth to groundwater at each well location. The depth to groundwater measurements in the monitoring wells ranged from 11.55 feet (ft)
below the top of casing (ft-BTOC) in monitoring well MW-14 and 24.20 feet BTOC in monitoring
well MW-8. Based on data obtained during this sampling event, groundwater flow appears to trend to the north and northeast. This groundwater flow appears generally consistent with past assertions. A groundwater hydraulic gradient map based on the September 27, 2023 measurements is included as Figure 3. Groundwater elevation data are included in Table B-7.
Following gauging, monitoring wells were purged and sampled with separate, disposable polyethylene bailers for each well. Samples from the wells were decanted into pre-preserved
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Triangle Texaco #2 – NCDEQ Incident #21112 WR Project # 23-0307-ET Groundwater Monitoring Report November 2023 8
laboratory provided sample containers. Samples collected from site monitoring wells were submitted via courier under chain-of-custody procedures to Waypoint Analytical in Charlotte, NC for testing by SM6200B.
Laboratory Results Analytical results for the groundwater samples collected on September 27, 2023, indicated that no petroleum compounds analyzed exceeded the GCL. Laboratory analytical results indicated that benzene exceeded the 2B Standard in monitoring wells
MW-1, MW-1A, and MW-8 and toluene exceeded the 2B Standard in monitoring wells MW-1 and MW-8. Laboratory analytical results of VOCs for MW-2 and MW-6 were below 2B Standards.
No petroleum compounds were detected above the laboratory MDLs in monitoring wells MW-3A, MW-12, MW-14, DMW-1, and DMW-2. These results are shown on Figure 4 and included in Table B-4. A benzene isoconcentration map is also included on Figure 5. Copies of the laboratory analytical report and chain-of-custody are
included in Appendix A. A photographic record and field notes are included in Appendix B. Standard Operating Procedures are included in Appendix C.

SECTION E. CONCLUSIONS AND RECOMMENDATIONS
This report documents the results of field activities conducted at the site for TA-03 which included the purging and sampling of monitoring wells MW-1, MW-1A, MW-2, MW-3A, MW-6, MW-8, MW-10, MW-12, MW-14, DMW-1, and DMW-2. Conclusions based on observations, analytical
data and research relating to the release at the site combined with historical information include the following:
• The 6,000-gallon gasoline UST was removed in 1999.
• Municipal water is available to the site and surrounding area.
• No petroleum compounds were reported at concentrations that exceed the GCLs.
• Benzene exceeded the 2B Standard in monitoring wells MW-1, MW-1A, and MW-8 and toluene exceeded the 2B Standard in monitoring wells MW-1 and MW-8.
• VOCs were not detected above the 2B Standards in monitoring well MW-2 and MW-6.
• No petroleum compounds were detected above the laboratory MDLs in monitoring wells MW-3A, MW-12, MW-14, DMW-1, and DMW-2.
• The remediation system is currently not operating at the request of NCDEQ. Prior to restarting
the remediation system, float switches, associated relays and wiring, and a transfer pump shaft
seal will need to be replaced.
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Triangle Texaco #2 – NCDEQ Incident #21112 WR Project # 23-0307-ET Groundwater Monitoring Report November 2023 9
Based on the results of assessment and monitoring activities conducted at the site in association with TA-03, WR recommends the following:
• Repair on-site remediation system and continue operation of the system focusing on dual-phase extraction (DPE) wells DPE-1, DPE-2, and DPE-3.
• Semi-annual monitoring of MW-1, MW-1A, MW-2, MW-8, and MW-10.

FIGURES

DPE-3
RW-1/DPE-4
DPE-2
SVE-1/DPE-1
MM
FD
DRAWN BY:
10/30/23 23-0307-ET
1
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
TRIANGLE TEXACO #2 (TF#2112)
201 NORTH MAIN STREET
MOUNT HOLLY, GASTON COUNTY, NC
GENERAL LOCATION MAP
1"=1000 '
GRAPHIC SCALE
1 inch = 1000 ft.
0 1000500 2000
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479
www.withersravenel.com
SUBJECT SITE
± 0.54 ACRES
J:\23\0307-ET-Triangle Texaco #2\Enviro\CAD\Base Map 09-2023.dwg- October 30, 2023 - LALLYN
MW-1
MW-1A
MW-2A
MW-2
MW-6
MW-4A
MW-12
MW-20
MW-21
MW-11
MW-5
MW-19
MW-15
MW-8
MW-10
DMW-2
MW-9
MW-14
MW-3 MW-3A
DMW-1
MW-13
MW-7
MW-17
MW-16
DPE-3
RW-1/DPE-4
DPE-5
DPE-6
DPE-2
SVE-1/DPE-1
1 inch = 50 ft.
5025 100
GRAPHIC SCALE
0
MM
FD
DRAWN BY:
1"=50 '
10/30/23 23-0307-ET
2
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
TRIANGLE TEXACO #2 (TF#2112)
201 NORTH MAIN STREET
MOUNT HOLLY, GASTON COUNTY, NC
SITE MAP
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479
www.withersravenel.com
J:\23\0307-ET-Triangle Texaco #2\Enviro\CAD\Base Map 09-2023.dwg- October 30, 2023 - LALLYN
LEGEND
TYPE II MONITORING WELL LOCATION
TYPE III MONITORING WELL LOCATION
DUAL PHASE EXTRACTION WELL LOCATION
NOTES:
1.) 2019 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.
MW-1MW-1AMW-2AMW-2MW-6MW-4AMW-12MW-20MW-21MW-11MW-5MW-19MW-15MW-8MW-10DMW-2MW-9MW-14MW-3MW-3ADMW-1MW-13MW-7MW-17MW-16DPE-3RW-1/DPE-4DPE-5DPE-6DPE-2SVE-1/DPE-1(577.27)(576.50)(576.73)(576.68)(576.16)576.5577.0576.0(575.36)(NM)(NM)(NM)(NM)(575.96)(NM)(NM)(NM)(568.67)(NM)(577.15)(NM)(NM)(NM)(NM)(NM)(NM)(575.61)(576.35)575.5575.0573.0571.0569.01"=60 'GRAPHIC SCALE1 inch = 60 ft.06030120MMFDDRAWN BY:11/1/2323-0307-ET3SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:TRIANGLE TEXACO #2 (TF#2112)201 NORTH MAIN STREETMOUNT HOLLY, GASTON COUNTY, NCGROUNDWATER HYDRAULIC GRADIENT MAP- SEPTEMBER 27, 2023WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.comJ:\23\0307-ET-Triangle Texaco #2\Enviro\CAD\Base Map 09-2023.dwg- November 1, 2023 - MMALTBALEGENDTYPE II MONITORING WELL LOCATIONTYPE III MONITORING WELL LOCATIONDUAL PHASE EXTRACTION WELL LOCATIONGROUNDWATER ELEVATION CONTOUR(INFERRED WHERE DASHED)GROUNDWATER ELEVATION (FT)GROUNDWATER FLOW DIRECTIONNOTES: 1.) 2019 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.(578.78)
MW-1MW-1AMW-2AMW-2MW-6MW-4AMW-12MW-20MW-21MW-11MW-5MW-19MW-15MW-8MW-10DMW-2MW-9MW-14MW-3MW-3ADMW-1MW-13MW-7MW-17DPE-3RW-1/DPE-4DPE-5DPE-6DPE-2SVE-1/DPE-1(4,830)(975)(<0.50)(<0.50)(0.524)(203)(8.84)(<0.50)(<0.50)(<0.50)(<0.50)1(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)1"=60 'GRAPHIC SCALE1 inch = 60 ft.06030120MMFDDRAWN BY:11/1/2323-0307-ET4SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:TRIANGLE TEXACO #2 (TF#2112)201 NORTH MAIN STREETMOUNT HOLLY, GASTON COUNTY, NCGROUNDWATERANALYTICAL RESULTSMAP - SEPTEMBER 2023WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.comJ:\23\0307-ET-Triangle Texaco #2\Enviro\CAD\Base Map 09-2023.dwg- November 1, 2023 - MMALTBALEGENDTYPE II MONITORING WELL LOCATIONTYPE III MONITORING WELL LOCATIONDUAL PHASE EXTRACTION WELL LOCATIONNOTES: 1.) 2019 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.
MW-1MW-1AMW-2AMW-2MW-6MW-4AMW-12MW-20MW-21MW-11MW-5MW-19MW-15MW-8MW-10DMW-2MW-9MW-14MW-3MW-3ADMW-1MW-13MW-7MW-17MW-16DPE-3RW-1/DPE-4DPE-5DPE-6DPE-2SVE-1/DPE-1(4,830)(975)(<0.50)(<0.50)(0.524)(203)(8.84)(<0.50)(<0.50)(<0.50)(<0.50)1(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)(NS)1"=60 'GRAPHIC SCALE1 inch = 60 ft.06030120MMFDDRAWN BY:11/1/2323-0307-ET5SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:TRIANGLE TEXACO #2 (TF#2112)201 NORTH MAIN STREETMOUNT HOLLY, GASTON COUNTY, NCBENZENE ISOCONCENTRATION MAP -SEPTEMBER 27, 2023WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.comJ:\23\0307-ET-Triangle Texaco #2\Enviro\CAD\Base Map 09-2023.dwg- November 1, 2023 - MMALTBALEGENDTYPE II MONITORING WELL LOCATIONTYPE III MONITORING WELL LOCATIONDUAL PHASE EXTRACTION WELL LOCATIONBENZENE CONCENTRATION CONTOUR (ug/L)GROUNDWATER CONCENTRATION (ug/L)NOTES: 1.) 2019 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT. 2.) NS = NOT SAMPLED(842)
500250 1000
MM
FD
DRAWN BY:
1"=500 '
11/1/23 23-0307-ET
6
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
TRIANGLE TEXACO #2 (TF#21112)
201 NORTH MAIN STREET
MOUNT HOLLY, GASTON COUNTY, NC
RECEPTOR MAP
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479
www.withersravenel.com
J:\23\0307-ET-Triangle Texaco #2\Enviro\CAD\Base Map 09-2023.dwg- November 1, 2023 - MMALTBA
LEGEND
NOTES:
1.) 2019 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.
2.) NO WATER SUPPLY WELLS LOCATED WITHIN A 1500-FT RADIUS OF
SITE.
0
GRAPHIC SCALE
1 inch = 500 ft.

TABLES

UST IDNumberCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofUSTWas release associated with UST System? (Y/N)1 6,000 Steel Unknown Single Wall Steel 1971Permanently Closed By Removal (December 1999)YAST IDNumberCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofASTWas release associated with AST System? (Y/N)IncidentNumberMaterialReleasedDateofRelease21112 Gasoline12/9/1999Notes:1) UST Information obtained from NCDEQ tank and ownership publications.Current/LastContentsTable B-1Site History: UST/AST System & Other Release InformationTriangle TexacoTank was permanently closed by removal on December 9, 1999. No soil was removed from the site during tank removal excavation. Soil samples collected near the pump island and surrounding the former UST exceeded the NC Action Levels.201 North Main StreetMount Holly, Gaston County, North Carolina Description of ReleaseIncident # 21112Current/LastContentsGasolinePage 1 of 1
Calculated
Benzene Bromodichloromethane Butylbenzene, n‐Butylbenzene, sec‐ Butylbenzene, tert‐ Dibromoethane, 1,2‐ 1,2‐DichloroethaneEthylbenzene Isopropyl Ether Isopropylbenzene (Cumene) Methyl‐tert‐Butyl Ether Naphthalene n‐PropylbenzeneToluene Trichloropropane, 1,2,3‐ 1,2,4‐Trimethylbenzene 1,3,5‐TrimethylbenzeneTotal Xylenes71‐43‐275‐27‐4 104‐51‐8 135‐98‐898‐06‐6 106‐93‐4 107‐06‐2 100‐41‐4 108‐20‐398‐82‐8 1634‐04‐491‐20‐3 103‐65‐1 108‐88‐396‐18‐495‐63‐6108‐67‐8 1330‐20‐7
03/01/00
12/21/00
03/11/01
01/13/03
05/22/12 5,940 NL ND ND NL NR NL 2,000 54.2 NL 784 249 NL 9,780 ND NL NL 10,110
11/13/14 6,060 NL ND ND NL ND NL 2,230 ND NL 432 330 NL 9,240 ND NL NL 11,750
02/11/15 4,580 NL ND ND NL ND NL 1,240 ND NL 178 231 NL 3,470 ND NL NL 5,670
09/20/17 9,030 ND ND ND NL ND 39.1 2,780 39.6 115 124 383 224 9,830 ND 1,590 ND 15,360
04/12/18 5,320 <12.5 ND <12.5 NL <12.5 15.2 2,490 19.1 106 13.5 363 226 9,210 <12.5 2,050 560 16,770
10/30/18 6,700 <12.5 ND <12.5 NL <12.5 <12.5 2,400 13.8 102 <12.5 561 <12.5 5,400 <12.5 2,040 <12.5 15,590
04/29/19 8,970 12.6 ND <12.5 NL <12.5 14.4 2,150 <12.5 114 <12.5 449 190 4,310 <12.5 1,400 403 9,370
11/19/19 3,010 <9.2 ND <12.3 NL <11.6 <12.0 2,470 <16.7 98.2 <22.2 328 195 6,860 <13.6 1,820 560 13,960
05/07/20 3,640 <4.6 <8.8 <6.2 NL <5.8 <6.6 1,230 <8.4 81.1 <11.1 263 <6.0 2,070 <6.8 866 <5.7 4,875
01/15/21 3,900 <4.6 <8.8 <6.2 NL <5.8 <6.6 1,510 <8.4 80.4 <11.1 284 <6.0 2,460 <6.8 875 <5.7 5,505
07/13/21 2,350 <7.7 <12.2 <10 NL <6.8 <8 996 <7.7 71.8 <10.6 236 129 1,290 <6.5 627 197 3,382
01/19/22 3,060 <7.7 <12.2 <10.0 NL <6.8 <8.0 949 <7.7 65.6 <10.6 245 96.4 911 6.5 477 114 2,204
06/20/23 3,060 ND ND ND ND ND ND 831 ND 52.8 ND 191 77.3 1,580 ND 474 164 3,562
09/26/23 4,830 <50.0 <50.0 <50.0 <200 <50.0 <50.0 1,700 <50.0 99.2 <100 207 178 3,060 <50.0 1,040 369 8,680
03/01/00 3,500 NL ND ND NL 44 NL 860 120 NL 1,900 NA NL 1,300 ND NL NL 5,500
12/21/00 5,500 NL ND ND NL 7.5 NL 250 140 NL 3,000 NA NL 480 ND NL NL 1,880
03/11/01 4,300 NL ND ND NL ND NL 320 ND NL 2,100 NA NL 510 ND NL NL 2,010
09/06/01
01/13/03
05/22/12 697 NL NL NL NL NL NL 414 ND NL 67.2 273 NL 92.2 NL NL NL 1,882
11/13/14 887 NL NL NL NL NL NL 298 ND NL ND 156 NL 84.2 NL NL NL 1,139
02/11/15 876 NL NL NL NL NL NL 31.2 ND NL 151 16.4 NL 32.1 NL NL NL 285
10/05/15 878 NL NL NL NL NL NL 35.9 ND NL 355 36.7 NL 191 NL NL NL 287
04/21/16 1,240 NL NL NL NL NL NL 41.2 ND NL 337 38.2 NL 183 NL NL NL 323
10/19/16 1,170 NL NL NL NL NL NL 24.8 ND NL 577 26.7 NL 54.3 NL NL NL 134
09/20/17 1,980 ND ND ND NL ND 3.9 71.5 ND 52.5 981 71.7 28.7 66.6 ND 134 58.7 497
04/12/18 2,290 <3.1 ND <3.1 NL <3.1 6.7 72.5 <3.1 69 719 61.8 46.8 93.1 <3.1 122 59 536
10/30/18 1,720 <3.1 ND <3.1 NL <3.1 <3.1 114 <3.1 48.2 244 85.2 <3.1 79.7 <3.1 189 <3.1 790
04/29/19 4,540 <10.0 ND <10.0 NL <10.0 23.4 120 16.6 70.3 875 146 58.7 284 <10.0 100 58.2 800
11/19/19 2,910 <4.6 ND <6.2 NL <5.8 16 87.5 <8.4 51.9 666 73.6 33.2 177 <6.8 52.1 37.9 642
05/07/20 2,000 <2.3 6.3 <3.1 NL <2.9 5.4 33.2 <4.2 40.4 420 95.1 <3.0 70.1 <3.4 35.7 <2.8 311.7
01/15/21 1,450 <2.3 <4.4 <3.1 NL <2.9 5.4 44.9 <4.2 29.3 295 56.9 <3.0 41.1 <3.4 36.7 <2.8 268.5
07/13/21 1,170 <3.8 <6.1 <5 NL <3.4 <4 14.7 <3.8 24.4 308 33.9 12.2 26 <3.3 9.3 <4.2 66.3
01/19/22 1,470 <3.8 <6.1 <5.0 NL <3.4 <4.0 10 6 27.5 376 28.3 13.4 19.1 <3.3 <6.2 <4.2 35.5
06/20/23 1,070 ND ND ND ND ND ND 8.4 ND 23.5 259 ND ND 12.3 ND 16.4 ND 59.7
09/26/23 975 <50.0 <50.0 <50.0 <200 <50.0 <50.0 <50.0 <50.0 <50.0 224 <100 <50.0 <50.0 <50.0 <50.0 <50.0 <50.0
05/15/00 4,400 NL NL NL NL 0.43 NL 1500 NL NL 6400 NA NL 740 NL NL NL 2,230
03/11/01
09/06/01
01/13/03 4,480 NL NL NL NL NL NL 5,980 NL NL 4,770 NA NL 3,590 NL NL NL 24,000
05/22/12 2,340 NL NL NL NL NL NL 2,440 NL NL 95.9 657 NL 195 NL NL NL 5,656
11/13/14 1,600 NL NL NL NL NL NL 2,290 NL NL 44.8 798 NL 185 NL NL NL 5,477
02/11/15 906 NL NL NL NL NL NL 1,810 NL NL 211 698 NL 158 NL NL NL 4,179
10/05/15 316 NL NL NL NL NL NL 813 NL NL 1,250 283 NL 68 NL NL NL 1,426
04/21/16 56 NL NL NL NL NL NL 390 NL NL 81.2 199 NL 24 NL NL NL 1,016
10/19/16 49.3 NL NL NL NL NL NL 310 NL NL 293 141 NL 10.9 NL NL NL 615
09/20/17 7.4 ND ND ND NL ND ND 250 ND 93.9 24.8 132 220 5.8 ND 1,110 395 563.9
04/12/18 6.5 <1.0 ND 9 NL <1.0 1 105 <1.0 34.4 24 37.8 88.7 11 6.1 431 178 148.5
10/30/18 1.6 <0.50 ND <0.50 NL <0.50 <0.50 47.2 <0.50 18.7 15 13.4 47.9 0.75 2.2 218 84.8 37.2
04/29/19 77.1 <1.0 ND <1.0 NL <1.0 <1.0 146 <1.0 52.5 224 58.1 127 10.6 <1.0 599 232 201.3
11/19/19 39.5 <0.74 ND <0.98 NL <0.92 <0.98 50.8 <1.3 34.9 88 32.8 88.9 6.9 3.2 394 154 79.3
05/07/20
01/15/21 <0.24 <0.18 <0.35 <0.25 NL <0.23 <0.26 <0.24 <0.33 <0.24 <0.44 <0.66 <0.24 <0.23 <0.27 <0.19 <0.23 <0.24
07/13/21 <0.34 <0.31 <0.49 <0.40 NL <0.27 <0.32 <0.30 <0.31 <0.33 <0.42 <0.64 <0.34 <0.48 <0.26 <0.50 <0.33 <1.05
01/19/22 1.2 <0.31 13.1 <0.40 NL <0.27 <0.32 10.3 <0.31 19.7 2.6 4.6 55.7 0.55 0.84 158 30.9 5.84
06/20/23 0.54 ND ND ND 0.55 ND ND 1 ND 3.7 ND ND 8.2 ND ND 64.1 2.4 1.9
09/26/23 <0.500 <0.500 0.614 0.774 <2.00 <0.500 <0.500 <0.500 <0.500 1.38 <1.00 <1.00 2.88 <0.500 <0.500 10.1 <0.500 <0.500
04/27/00 ND NL NL ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
12/21/00 ND NL NL ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
03/11/01 ND NL NL ND NL ND NL ND ND NL ND NA NL ND ND NL NL ND09/06/01 NR NL NL ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND NL NL ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
05/22/12 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND NL NL ND NL ND NL ND ND NL ND 4 NL ND ND NL NL ND
02/11/15 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23
12/21/00 ND NL NL ND NL NR NL ND 33 NL 650 NA NL ND ND NL NL ND
03/11/01 ND NL NL ND NL ND NL ND ND NL 690 NA NL ND ND NL NL ND
09/06/01 NR NL NL ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND NL NL ND NL NR NL ND 11.6 NL 484 NA NL ND ND NL NL ND
05/22/12 ND NL NL ND NL ND NL ND ND NL 5.7 ND NL ND ND NL NL ND
11/13/14
09/26/23
04/27/00 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
12/21/00 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
03/11/01 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/06/01 NR NL NL ND NL NR NL NR NR NL NR NR NL NR ND NL NL NR
01/13/03 ND NL NL ND NL ND NL ND ND NL 1.9 ND NL ND ND NL NL ND
05/22/12 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
10/05/15 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
04/21/16 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
10/19/16 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23 <0.500 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500
03/11/01 ND NL NL ND NL NR NL ND ND NL 4.9 NA NL ND ND NL NL ND
09/06/01 NR NL NL ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND NL NL ND NL NR NL ND ND NL 8.5 NA NL ND ND NL NL ND
05/22/12 ND NL NL ND NL ND NL ND ND NL 2.2 ND NL ND ND NL NL ND
11/13/14 ND NL NL ND NL ND NL ND ND NL 10.4 ND NL ND ND NL NL ND
02/11/15 ND NL NL ND NL ND NL ND ND NL 39.5 ND NL ND ND NL NL ND
10/05/15 ND NL NL ND NL ND NL ND ND NL 34 ND NL ND ND NL NL ND
04/21/16 ND NL NL ND NL ND NL ND ND NL 4.5 ND NL ND ND NL NL ND
10/19/16 ND NL NL ND NL ND NL ND ND NL 2.8 ND NL ND ND NL NL ND
09/26/23
12/21/00 ND NL NL ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
03/11/01 ND NL NL ND NL ND NL ND ND NL ND NA NL ND ND NL NL ND
09/06/01 NR NL NL ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND NL NL ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
05/22/12
03/01/00
03/11/01
09/06/01
01/13/03 2,120 NL NL ND NL NR NL 2,730 ND NL 3,740 NA NL 4,750 ND NL NL 14,000
05/22/12 303 NL NL ND NL ND NL 1,060 ND NL ND 469 NL 24.1 ND NL NL 1,940
11/13/14 242 NL NL ND NL ND NL 1,580 ND NL ND 609 NL 40.4 ND NL NL 2,599
02/11/15 255 NL NL ND NL ND NL 1,320 ND NL ND 402 NL 40.7 ND NL NL 2,159
10/05/15 57.3 NL NL ND NL ND NL 281 ND NL ND 244 NL ND ND NL NL 225.7
04/21/16 2.2 NL NL ND NL ND NL 14.3 ND NL ND 4 NL 0.6 ND NL NL 13.7
10/19/16 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
05/07/20 <0.24 <0.18 <0.35 <0.25 NL <0.23 <0.26 0.5 <0.33 <0.24 <0.44 <0.66 0.78 <0.23 <0.27 1.5 <0.23 <0.24
09/26/23 0.524 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 0.919 <0.500 <0.500 <1.00 <1.00 0.516 <0.500 <0.500 1.08 <0.500 <0.500
12/21/00 ND NL NL ND NL ND NL ND ND NL ND NA NL ND ND NL NL ND
03/11/01 ND NL NL ND NL ND NL ND ND NL ND NA NL ND ND NL NL ND
09/06/01 NR NL NL ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND NL NL ND NL ND NL ND ND NL ND NA NL ND ND NL NL ND
05/22/12 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND NL NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23
1 0.6 70 70 70 0.02 0.4 600 70 70 20 6 70 600 0.005 400 400 500
5,000 NE 5,900 8,800 14,750 50 400 80,000 70,000 30,500 20,000 6,000 30,000 260,000 NE 28,500 24,100 50,000
119 NE NE NE NE NE NE NE NE NE NE NE NE 110 NE NE NE NE
Notes:
1)All results provided in ug/L (micrograms per liter) or parts per billion.2)
3)
4)GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater.
5)NC 2B Standard = North Carolina Groundwater Quality Standard as per NC Administrative Code 15B NCAC 02B.
NE =  No Regulatory Limit EstablishedNA / NR = Compound Not Analyzed or Not Requested for Analysis
ND / NL = Compound Not Detected or Not Listed by previous consultant
Result = Result Exceeds Laboratory Detection Limits
Result = Result Exceeds 2L Standard
Result = Result Exceeds GCL Value
MW‐3
Unable to Locate Well
MW‐4A
Unable to Locate Well
Unable to Locate Well
MW‐2
MW‐1A
MW‐1
MW‐2A
Unable to Locate Well
MW‐6
MW‐3A
NC 2L Standard 
GCLs for Groundwater
Compounds analyzed for by laboratory but not listed were not detected above laboratory detection limits. See the laboratory report included  in the Appendix for a full list of constituents. 
NC 2L Standard = North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.
NC 2B Standard x10
LNAPL
LNAPL
LNAPL
TABLE B‐4
SUMMARY OF GROUNDWATER ANALYTICAL RESULTS
Triangle TexacoIncident # 21112
201 North Main Street
Mount Holly, Gaston County, North Carolina 
SampleID DateCollected
Analytical Method 6200B ‐ Volatile Organic Compounds
Unable to Locate Well
Unable to Locate Well
LNAPL
LNAPL
LNAPL
LNAPL
LNAPL
MW‐7
MW‐5
NA
LNAPL
LNAPL
Well Not Sampled ‐ Vehicle Parked on Well
Page 1 of 3
Calculated
Benzene Bromodichloromethane Butylbenzene, n‐Butylbenzene, sec‐ Butylbenzene, tert‐ Dibromoethane, 1,2‐ 1,2‐DichloroethaneEthylbenzene Isopropyl Ether Isopropylbenzene (Cumene) Methyl‐tert‐Butyl Ether Naphthalene n‐PropylbenzeneToluene Trichloropropane, 1,2,3‐ 1,2,4‐Trimethylbenzene 1,3,5‐TrimethylbenzeneTotal Xylenes71‐43‐275‐27‐4 104‐51‐8 135‐98‐898‐06‐6 106‐93‐4 107‐06‐2 100‐41‐4 108‐20‐398‐82‐8 1634‐04‐491‐20‐3 103‐65‐1 108‐88‐396‐18‐495‐63‐6108‐67‐8 1330‐20‐7
TABLE B‐4
SUMMARY OF GROUNDWATER ANALYTICAL RESULTS
Triangle TexacoIncident # 21112
201 North Main Street
Mount Holly, Gaston County, North Carolina 
SampleID DateCollected
Analytical Method 6200B ‐ Volatile Organic Compounds
12/21/00 1,900 NL NL ND NL ND NL 450 75 NL 340 NA NL 330 ND NL NL 1,470
03/11/01 3,800 NL NL ND NL ND NL 1,500 210 NL 4,200 NA NL 3,600 ND NL NL 6,600
09/06/01 NR NL NL ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 2,610 NL NL ND NL NR NL 1,940 ND NL 1,650 NA NL 1,570 ND NL NL 9,060
05/22/12 1,540 NL NL ND NL ND NL 1,140 ND NL 138 381 NL 450 ND NL NL 3,782
11/13/14 1,780 NL NL ND NL ND NL 1,060 ND NL 90.1 342 NL 374 ND NL NL 3,358
02/11/15 1,680 NL NL ND NL ND NL 1,100 ND NL 92 383 NL 471 ND NL NL 3,657
10/05/15 1,730 NL NL ND NL ND NL 482 ND NL 42.5 196 NL 205 ND NL NL 1,300
04/21/16 2,070 NL NL ND NL ND NL 503 ND NL ND 200 NL 276 ND NL NL 1,497
10/19/16 3,230 NL NL ND NL ND NL 679 ND NL 48.4 291 NL 391 ND NL NL 2,062
09/20/17
04/12/18 2,480 <5.0 ND <5.0 NL <5.0 6.9 1,030 <5.0 71.6 33.1 382 114 238 <5.0 741 114 2,484
10/30/18 3,710 <5.0 ND <5.0 NL <5.0 <5.0 848 <5.0 59.4 24.3 342 79 292 <5.0 270 <5.0 1,330.7
04/29/19 3,570 <5.0 ND <5.0 NL <5.0 <5.0 941 <5.0 76.4 15.4 387 105 342 <5.0 495 159 1,949
11/19/19 3,620 <3.7 ND <4.9 NL <4.6 <4.9 1,030 <6.7 67.4 <8.9 458 89.8 441 <4.5 443 130 2,375
05/07/20 3,170 <3.7 <7.1 <4.9 NL <4.6 <5.3 913 <6.7 69.6 <8.9 408 <4.8 298 <5.4 232 <4.5 1,375
01/15/21 1,900 <3.7 <7.1 <4.9 NL <4.6 <5.3 941 <6.7 73.3 <8.9 354 <4.8 264 <5.4 302 <4.5 1,526
07/13/21 1,180 <3.8 <6.1 <5.0 NL <3.4 <4 705 <3.8 59 <5.3 263 73.9 205 <3.3 308 101 1,469.7
01/19/22 1,140 <3.1 <4.9 5.9 NL <2.7 <3.2 646 <3.1 54.9 <4.2 260 70.3 180 6.5 202 62.2 1,124.1
06/20/23 170 ND ND ND ND ND ND 280 ND 22.1 2.1 103 34 38.6 ND 249 83.4 816.4
09/26/23 203 <50.0 <50.0 <50.0 <200 <50.0 <50.0 1,390 <50.0 108 <100 502 182 141 <50.0 1,590 528 5,070
12/21/00 15 ND NL ND NL ND NL 3.4 24 NL 490 NA NL 2.4 ND NL NL 8
03/11/01 ND ND NL ND NL ND NL ND ND NL 29 NA NL ND ND NL NL ND
09/06/01 NR NR NL ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND ND NL ND NL NR NL ND ND NL 6.8 NA NL ND ND NL NL ND
05/22/12 ND ND NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND ND NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND ND NL ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23
12/21/00 7,800 NL NL ND NL 0.061 NL 2,200 ND NL 27,000 NA NL 3,800 ND NL NL 7,000
03/11/01 6,100 NL NL ND NL ND NL 2,000 ND NL 21,000 NA NL 2,200 ND NL NL 5,600
09/06/01 NR NL NL ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 5,380 NL NL ND NL NR NL 2,540 ND NL 31,000 NA NL 4,830 ND NL NL 10,700
05/22/12 4,700 NL NL ND NL ND NL 2,080 ND NL 6,530 286 NL 1,980 ND NL NL 6,381
11/13/14 3,580 NL NL ND NL ND NL 1,980 ND NL 2,270 306 NL 2,410 ND NL NL 7,060
02/11/15 1,810 NL NL ND NL ND NL 1,420 ND NL 5,740 169 NL 444 ND NL NL 3,591
10/05/15 998 NL NL ND NL ND NL 763 8.3 NL 1,640 92.1 NL 569 ND NL NL 1,644
04/21/16 18.2 NL NL ND NL ND NL 23.8 ND NL 207 ND NL 3 ND NL NL 50.7
10/19/16 290 NL NL ND NL ND NL 292 2.2 NL 178 44.1 NL 53.6 ND NL NL 412
09/20/17 1,520 ND ND ND NL ND 4.9 1,160 ND 64.5 1,050 185 107 226 ND 536 169 3,350
04/12/18 1,070 <3.1 ND <3.1 NL <3.1 4.2 1,380 6.4 85.1 592 270 159 110 <3.1 771 240 3,711.3
10/30/18 1,360 <3.1 ND <3.1 NL <3.1 <3.1 1,250 <3.1 79.3 845 245 <3.1 101 <3.1 290 <3.1 1,952.5
04/29/19 341 <1.2 ND <1.2 NL <1.2 1.5 781 <1.2 55.7 185 173 93.6 111 <1.2 390 145 2,046
11/19/19 136 <0.46 ND <0.62 NL <0.58 <0.61 123 <0.84 12 104 35.8 19.6 15 <0.68 23.1 15.9 184.6
05/07/20 98.7 <0.18 <0.35 <0.25 NL <0.23 0.43 130 <0.33 12 51.4 22.7 18.9 10 <0.27 <0.19 <0.23 66.6
01/15/21 15.1 <0.18 <0.35 <0.25 NL <0.23 <0.26 40.7 <0.33 5.4 26.1 20.3 <0.24 2.7 <0.27 29.9 <0.23 54.6
07/13/21 115 <0.31 <0.49 <0.40 NL <0.27 <0.32 29.4 <0.31 21.4 26.2 39.6 32.5 16.3 <0.26 16.3 3.8 151.7
01/19/22 166 <0.31 <0.49 <0.40 NL <0.27 <0.37 7.5 <0.31 21.5 28.3 47.3 35.5 10 <0.26 <0.50 <0.33 39.3
06/20/23 3.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.4 ND 1.5
09/26/23 8.84 <5.00 <5.00 <5.00 <20.0 <5.00 <5.00 21.4 <5.00 <5.00 <10.0 <10.0 <5.00 <5.00 <5.00 26.9 <5.00 13.4
03/11/01 ND ND ND ND NL ND NL ND ND NL ND NA NL ND ND NL NL ND
09/06/01 NR NR NR ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND ND ND ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23
03/11/01 ND ND ND ND NL ND NL ND ND NL ND NA NL ND ND NL NL ND
09/06/01 NR NR NR ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND ND ND ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
10/05/15 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
04/21/16 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
10/19/16 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23 <0.500 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500
03/11/01 ND ND ND ND NL ND NL ND 13 NL 460 NA NL ND ND NL NL ND
09/06/01 NR NR NR ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND ND ND ND NL NR NL ND 19.3 NL 668 NA NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL 8.8 ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL 3.9 ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL 3.1 ND NL ND ND NL NL ND
09/26/23
03/11/01 ND ND ND ND NL ND NL ND ND NL ND NA NL ND ND NL NL ND
09/06/01 NR NR NR ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND ND ND ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23 <0.500 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500
03/11/01 ND ND ND ND NL ND NL ND ND NL ND NA NL ND ND NL NL ND
09/06/01 NR NR NR ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND ND ND ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23
04/05/01 ND ND ND ND NL ND NL ND 2.9 NL 20 NA NL ND ND NL NL ND
09/06/01 NR NR NR ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND ND ND ND NL NR NL ND 2.1 NL 4.2 NA NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23
09/06/01 <1 <1 ND ND NL <0.02 NL <1 <1 NL 23 NA NL <1 ND NL NL <1
01/13/03 ND ND ND ND NL NR NL ND 4.4 NL 198 NA NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL 0.65 ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL 1.4 ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23
09/06/01 <1 <1 ND ND NL <0.02 NL <1 <1 NL <1 NA NL <1 ND NL NL <1
01/13/03 ND ND ND ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
05/22/12
09/06/01 <1 <1 ND ND NL <0.02* NL <1 <1 NL 7 NA NL <1 ND NL NL <1
01/13/03 ND ND ND ND NL NR NL ND ND NL ND NA NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
09/26/23
09/06/01 <1 <1 ND ND NL <0.02 NL <1 <1 NL 130 <1 NL <1 ND NL NL <1
01/13/03 ND ND ND ND NL NR NL ND ND NL ND ND NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL 75.4 ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL 33.5 ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL 1.8 ND NL ND ND NL NL ND
10/05/15 ND ND ND ND NL ND NL ND ND NL 244 ND NL ND ND NL NL ND
04/21/16 ND ND ND ND NL ND NL ND ND NL 6.5 ND NL ND ND NL NL ND
10/19/16 ND ND ND ND NL ND NL ND ND NL 248 ND NL ND ND NL NL ND
09/26/23
1 0.6 70 70 70 0.02 0.4 600 70 70 20 6 70 600 0.005 400 400 500
5,000 NE 5,900 8,800 14,750 50 400 80,000 70,000 30,500 20,000 6,000 30,000 260,000 NE 28,500 24,100 50,000
119 NE NE NE NE NE NE NE NE NE NE NE NE 110 NE NE NE NE
Notes:1)All results provided in ug/L (micrograms per liter) or parts per billion.
2)
3)
4)GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater.
5)NC 2B Standard = North Carolina Groundwater Quality Standard as per NC Administrative Code 15B NCAC 02B.
NE =  No Regulatory Limit Established
NA / NR = Compound Not Analyzed or Not Requested for AnalysisND / NL = Compound Not Detected or Not Listed by previous consultant
Result = Result Exceeds Laboratory Detection Limits
Result = Result Exceeds 2L Standard
Result = Result Exceeds GCL Value
MW‐20
Unable to Locate Well
Unable to Locate Well
Unable to Locate Well
Unable to Locate Well
Unable to Locate Well
Unable to Locate Well
Unable to Locate Well
MW‐17
MW‐16
MW‐15
MW‐13
MW‐11
MW‐12
MW‐10
MW‐8
MW‐9
Well Not Sampled ‐ Vehicle Parked on Well
Unable to Locate Well
MW‐21
NC 2L Standard 
GCLs for Groundwater
NC 2B Standard x10
Compounds analyzed for by laboratory but not listed were not detected above laboratory detection limits. See the laboratory report included  in the Appendix for a full list of constituents. 
NC 2L Standard = North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.
Unable to Locate Well
MW‐19
MW‐14
Page 2 of 3
Calculated
Benzene Bromodichloromethane Butylbenzene, n‐Butylbenzene, sec‐ Butylbenzene, tert‐ Dibromoethane, 1,2‐ 1,2‐DichloroethaneEthylbenzene Isopropyl Ether Isopropylbenzene (Cumene) Methyl‐tert‐Butyl Ether Naphthalene n‐PropylbenzeneToluene Trichloropropane, 1,2,3‐ 1,2,4‐Trimethylbenzene 1,3,5‐TrimethylbenzeneTotal Xylenes71‐43‐275‐27‐4 104‐51‐8 135‐98‐898‐06‐6 106‐93‐4 107‐06‐2 100‐41‐4 108‐20‐398‐82‐8 1634‐04‐491‐20‐3 103‐65‐1 108‐88‐396‐18‐495‐63‐6108‐67‐8 1330‐20‐7
TABLE B‐4
SUMMARY OF GROUNDWATER ANALYTICAL RESULTS
Triangle TexacoIncident # 21112
201 North Main Street
Mount Holly, Gaston County, North Carolina 
SampleID DateCollected
Analytical Method 6200B ‐ Volatile Organic Compounds
12/21/00 ND ND ND ND NL ND NL ND ND NL ND NA NL ND ND NL NL 1.2
03/11/01 ND ND ND ND NL ND NL ND ND NL 1.2 NA NL ND ND NL NL ND
09/06/01 NR NR NR ND NL NR NL NR NR NL NR NA NL NR ND NL NL NR
01/13/03 ND ND ND ND NL NR NL ND ND NL 3.6 ND NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL 12.3 ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL 26.4 ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL 1.1 ND NL ND ND NL NL ND
09/26/23 <0.500 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500
04/24/00 ND ND ND ND NL ND NL ND ND NL 7.1 ND NL ND ND NL NL 1.2
12/21/00 ND ND ND ND NL ND NL ND ND NL 1.7 ND NL ND ND NL NL ND
03/11/01 ND ND ND ND NL ND NL ND ND NL 2.1 ND NL ND ND NL NL ND
09/06/01 NR NR NR ND NL NR NL NR NR NL NR NR NL NR ND NL NL NR
01/13/03 ND ND ND ND NL NR NL ND ND NL 1.30 ND NL ND ND NL NL ND
05/22/12 ND ND ND ND NL ND NL ND ND NL 1.5 ND NL ND ND NL NL ND
11/13/14 ND ND ND ND NL ND NL ND ND NL 2.5 ND NL ND ND NL NL ND
02/11/15 ND ND ND ND NL ND NL ND ND NL 0.62 ND NL ND ND NL NL ND
09/26/23 <0.500 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500
05/22/12 4,050 NL NL ND NL ND NL 1,850 66.5 NL 877 775 NL 1,730 ND NL NL 8,260
11/13/14 16,800 NL NL ND NL ND NL 10,400 ND NL 556 7,160 NL 6,360 ND NL NL 37,070
02/11/15 10,900 NL NL ND NL ND NL 2,330 ND NL 1,300 728 NL 5,850 ND NL NL 9,800
10/05/15 6,980 NL NL ND NL ND NL 1,960 41.8 NL 718 1,100 NL 6,610 ND NL NL 13,700
04/21/16 3,330 NL NL ND NL ND NL 2,170 36.2 NL 276 1,310 NL 8,000 ND NL NL 16,61010/19/16 2,930 NL NL ND NL ND NL 1,920 ND NL ND 1,060 NL 5,610 ND NL NL 13,340
11/13/14 804 NL NL ND NL ND NL 477 ND NL 2,720 166 NL 377 ND NL NL 1,305
02/11/15 828 NL NL ND NL ND NL 722 ND NL 1,060 52.2 NL 664 ND NL NL 3,570
11/13/14 666 NL ND ND NL ND NL 161 ND NL ND 91.8 NL 141 ND NL NL 519
02/11/15 182 NL ND ND NL ND NL 58.6 ND NL 20.7 21.3 NL 33.3 ND NL NL 194.9
10/05/15 86.9 NL ND ND NL ND NL 2.3 ND NL 120 ND NL 27.6 ND NL NL 100.2
04/21/16 207 NL ND ND NL ND NL 13.5 ND NL 89.2 9.2 NL 40.8 ND NL NL 94.110/19/16 44.9 NL ND ND NL ND NL 0.79 ND NL 31.7 ND NL 1.2 ND NL NL 6
11/13/14 2.9 NL ND ND NL ND NL 0.82 0.63 NL 91.4 ND NL ND ND NL NL ND
02/11/15 20.8 NL ND ND NL ND NL 6 ND NL 62.7 ND NL 1.4 ND NL NL 3.9
10/05/15 280 NL ND ND NL ND NL 250 ND NL 152 53.1 NL 32.7 ND NL NL 428
04/21/16 29.5 NL ND ND NL ND NL 4.1 1 NL 105 4.2 NL 4.1 ND NL NL 23.4
10/19/16 1.1 NL ND ND NL ND NL ND ND NL 10.3 ND NL ND ND NL NL ND
11/13/14 29.1 NL ND ND NL ND NL 53.6NL 730 ND NL 4.1 ND NL NL 11.3
02/11/15 7.2 NL ND ND NL ND NL ND ND NL 288 ND NL 2 ND NL NL 4.4
10/05/15 3 NL ND ND NL ND NL ND ND NL 43.7 ND NL 1.1 ND NL NL 0.73
04/21/16 3 NL ND ND NL ND NL ND ND NL 17.2 ND NL 0.67 ND NL NL ND
10/19/16
11/13/14 ND NL ND ND NL ND NL ND ND NL 188 ND NL ND ND NL NL ND
02/11/15 ND NL ND ND NL ND NL ND ND NL 5.7 ND NL ND ND NL NL ND
04/21/16 ND NL ND ND NL ND NL ND ND NL 124 ND NL ND ND NL NL ND
10/19/16
05/22/12 ND NL ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
11/13/14 ND NL ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
02/11/15 ND NL ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
10/05/15 ND NL ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
04/21/16 ND NL ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
10/19/16 ND NL ND ND NL ND NL ND ND NL ND ND NL ND ND NL NL ND
1 0.6 70 70 70 0.02 0.4 600 70 70 20 6 70 600 0.005 400 400 500
5,000 NE 5,900 8,800 14,750 50 400 80,000 70,000 30,500 20,000 6,000 30,000 260,000 NE 28,500 24,100 50,000
119 NE NE NE NE NE NE NE NE NE NE NE NE 110 NE NE NE NE
Notes:1)All results provided in ug/L (micrograms per liter) or parts per billion.
2)
3)
4)GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater.
5)NC 2B Standard = North Carolina Groundwater Quality Standard as per NC Administrative Code 15B NCAC 02B.
NE =  No Regulatory Limit Established
NA / NR = Compound Not Analyzed or Not Requested for AnalysisND / NL = Compound Not Detected or Not Listed by previous consultant
Result = Result Exceeds Laboratory Detection Limits
Result = Result Exceeds 2L Standard
Result = Result Exceeds GCL Value
Well Not Sampled ‐ Vehicle Parked on Well
Well Not Sampled ‐ Vehicle Parked on Well
DMW‐2
DMW‐1
Trip Blank
DPE‐6
DPE‐5
DPE‐4(RW‐1)
DPE‐3
DPE‐2
DPE‐1(SVE‐1)
NC 2L Standard 
GCLs for Groundwater
NC 2B Standard x10
Compounds analyzed for by laboratory but not listed were not detected above laboratory detection limits. See the laboratory report included  in the Appendix for a full list of constituents. 
NC 2L Standard = North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.
Page 3 of 3
Well ID Date Installed
Top of Casing
Elevation
(ft)
Well Diameter
(in)
Well Casing
Depth
(ft-BGS)
Screen Interval
(ft-BGS)
Date of
Measurement
Depth to Product
(ft-BTOC)
Depth To Water
(ft-BTOC)
Product Thickness
(ft)
Groundwater
Elevation
(ft)
09/05/01 24.69 24.54 0.15 575.96
01/13/03 23.4 23.18 0.22 577.38
05/21/12 -- 22.79 -- 577.58
11/12/14 -- 23.11 -- 577.26
02/10/15 -- 23.71 -- 576.66
09/20/17 -- 20.89 -- 579.48
04/12/18 -- 20.80 -- 579.57
10/30/18 -- 20.28 -- 580.09
04/29/19 -- 20.83 -- 579.54
11/19/19 -- 22.87 -- 577.50
05/07/20 -- 19.81 -- 580.56
01/15/21 -- 22.17 -- 578.20
07/13/21 -- 23.00 -- 577.37
01/19/22 -- 23.30 -- 577.07
06/20/23 -- 21.59 -- 578.78
09/27/23 -- 23.10 -- 577.27
09/05/01 22.55 22.39 0.16 575.15
01/13/03 21.00 20.86 0.14 576.66
05/21/12 20.45 20.43 0.02 576.99
11/12/14 -- 20.82 -- 576.58
02/10/15 -- 25.65 -- 571.75
10/05/15 --27.03 --570.37
04/21/16 -- 24.67 -- 572.73
10/19/16 -- 20.08 -- 577.32
09/20/17 -- 18.93 -- 578.47
04/12/18 -- 18.82 -- 578.58
10/30/18 -- 18.32 -- 579.08
04/29/19 -- 22.38 -- 575.02
11/19/19 -- 25.32 -- 572.08
05/07/20 -- 18.72 -- 578.68
01/15/21 -- 22.70 -- 574.70
07/13/21 -- 20.34 -- 577.06
01/19/22 -- 21.05 -- 576.35
06/20/23 -- 19.37 -- 578.03
09/27/23 -- 20.90 -- 576.50
09/05/01 -- 22.55 -- 574.52
01/13/03 -- 20.98 -- 576.09
05/21/12 -- 20.61 -- 576.46
11/12/14 -- 20.89 -- 576.18
02/10/15 -- 24.87 -- 572.20
10/05/15 -- 26.46 -- 570.61
04/21/16 -- 24.70 -- 572.37
10/19/16 -- 20.47 -- 576.60
09/20/17 -- 19.75 -- 577.32
04/12/18 -- 19.25 -- 577.82
10/30/18 -- 18.40 -- 578.67
04/29/19 -- 21.62 -- 575.45
11/19/19 -- 25.48 -- 571.59
01/15/21 -- 21.58 -- 575.49
07/13/21 -- 21.35 -- 575.72
01/19/22 -- 21.27 -- 575.80
06/20/23 -- 19.39 -- 577.68
09/27/23 -- 20.34 -- 576.73
09/05/01 -- 23.48 -- 576.13
01/13/03 -- 21.69 -- 577.92
05/21/12 -- 21.44 -- 578.17
11/12/14 -- 21.70 -- 577.91
02/10/15 -- 22.14 -- 577.47
09/27/23
09/05/01 -- 13.06 -- 575.09
01/13/03 -- 11.57 -- 576.58
05/21/12 -- 11.43 -- 576.72
11/12/14 -- NM -- NM
02/10/15 -- NM -- NM
09/27/23
09/05/01 -- 21.15 -- 574.37
01/13/03 -- 19.55 -- 575.97
05/21/12 -- 19.22 -- 576.30
11/12/14 -- 19.91 -- 575.61
02/10/15 -- 21.28 -- 574.24
10/05/15 -- 23.60 -- 571.92
04/21/16 -- 21.69 -- 573.83
10/19/16 -- 19.30 -- 576.22
09/27/23 -- 20.16 -- 575.36
1)
2)
3)
4)
5)
10 - 250 - 102.00595.524/13/2000
Notes:
Top of Casing (TOC) elevations & data provided by previous consultants prior to June 2023.
NM = Not Measured.
BGS - Below Ground Surface.
BTOC - Below Top of Casing.
If free product present groundwater elevation calculated by [TOC-DTW]+[free product thickness x 0.8581].
TABLE B-7
MONITORING WELL CONSTRUCTION AND LIQUID LEVEL DATA
Triangle Texaco
Mount Holly, Gaston County, North Carolina
201 North Main Street
Incident # 21112
MW-3A
MW-1A 2/25/2000
MW-1 Unknown 600.37 2 0 - 17 17 - 37
597.40 2 0 - 18 18 - 33
MW-2 597.07 2.00 0 - 25 25 - 35
MW-2A 4/14/2000 599.61 2.00 0 - 15 15 - 30
Unknown
Unable to Locate Well
MW-3 9/9/1993 588.15 2.00 0 - 14 14 - 24
Unable to Locate Well
Page 1 of 4
Well ID Date Installed
Top of Casing
Elevation
(ft)
Well Diameter
(in)
Well Casing
Depth
(ft-BGS)
Screen Interval
(ft-BGS)
Date of
Measurement
Depth to Product
(ft-BTOC)
Depth To Water
(ft-BTOC)
Product Thickness
(ft)
Groundwater
Elevation
(ft)
TABLE B-7
MONITORING WELL CONSTRUCTION AND LIQUID LEVEL DATA
Triangle Texaco
Mount Holly, Gaston County, North Carolina
201 North Main Street
Incident # 21112
09/05/01 --22.37 --570.23
01/13/03 --20.94 --571.66
05/21/12 --20.84 --571.76
11/12/14 --21.62 --570.98
02/10/15 --22.71 --569.89
10/05/15 --22.66 --569.94
04/21/16 --22.00 --570.60
10/19/16 --21.91 --570.69
09/27/23
09/05/01 --13.19 --569.84
01/13/03 --11.98 --571.05
05/21/12 --NM --NM
11/12/14 --NM --NM
02/10/15 --NM --NM
09/27/23
09/05/01 23.85 23.28 0.57 574.53
01/13/03 --21.30 --576.02
05/21/12 --20.91 --576.41
11/12/14 --21.22 --576.10
02/10/15 --24.43 --572.89
10/05/15 --26.66 --570.66
04/21/16 --24.56 --572.76
10/19/16 --20.72 --576.60
05/07/20 --19.03 --578.29
09/27/23 --21.36 --575.96
09/05/01 --11.66 --575.56
01/13/03 --11.11 --576.11
05/21/12 --11.02 --576.20
11/12/14 --11.36 --575.86
02/10/15 --10.99 --576.23
09/27/23
09/05/01 --25.49 --575.39
01/13/03 --23.94 --576.94
05/21/12 --23.62 --577.26
11/12/14 --24.11 --576.77
02/10/15 --25.21 --575.67
10/05/15 --26.14 --574.74
04/21/16 --24.60 --576.28
10/19/16 --23.91 --576.97
09/20/17 --NM --NM
04/12/18 --22.13 --578.75
10/30/18 --21.50 --579.38
04/29/19 --22.35 --578.53
11/19/19 --24.55 --576.33
05/07/20 --21.95 --578.93
01/15/21 --23.06 --577.82
07/13/21 --24.11 --576.77
01/19/22 --24.42 --576.46
06/20/23 --22.66 --578.22
09/27/23 --24.20 --576.68
9/5/2001 --13.56 --575.35
1/13/2003 --12.10 --576.81
5/21/2012 --11.72 --577.19
11/12/2014 --12.29 --576.62
2/10/2015 --12.91 --576.00
9/27/2023
09/05/01 --23.52 --574.90
01/13/03 --22.09 --576.33
05/21/12 --21.77 --576.65
11/12/14 --22.08 --576.34
02/10/15 --26.89 --571.53
10/05/15 --26.55 --571.87
04/21/16 --24.64 --573.78
10/19/16 --21.48 --576.94
09/20/17 --20.42 --578.00
04/12/18 --20.32 --578.10
10/30/18 --19.69 --578.73
04/29/19 --21.90 --576.52
11/19/19 --26.47 --571.95
05/07/20 --20.18 --578.24
01/15/21 --23.15 --575.27
07/13/21 --22.22 --576.20
01/19/22 --22.43 --575.99
06/20/23 --20.73 --577.69
09/27/23 --22.26 --576.16
1)
2)
3)
4)
5)
Notes:
Top of Casing (TOC) elevations & data provided by previous consultants prior to June 2023.
NM = Not Measured.
BGS - Below Ground Surface.
BTOC - Below Top of Casing.
If free product present groundwater elevation calculated by [TOC-DTW]+[free product thickness x 0.8581].
598.42MW-10 12/18/2000 20 - 350 - 20
Unable to Locate Well
Unable to Locate Well
Unable to Locate Well
2/3/1995 587.22 2 0 - 8 8 - 18
Unable to Locate Well
2
MW-4A 3/7/2001 592.6 2 0 - 15 15 - 30
MW-5 2/2/1995 583.03 2 0 - 18 18 - 38
MW-6 2/2/1995 597.32 2 0 - 14 14 - 29
MW-7
4-200-42588.9112/18/2000MW-9
25 - 420 - 252600.8812/19/2000MW-8
Page 2 of 4
Well ID Date Installed
Top of Casing
Elevation
(ft)
Well Diameter
(in)
Well Casing
Depth
(ft-BGS)
Screen Interval
(ft-BGS)
Date of
Measurement
Depth to Product
(ft-BTOC)
Depth To Water
(ft-BTOC)
Product Thickness
(ft)
Groundwater
Elevation
(ft)
TABLE B-7
MONITORING WELL CONSTRUCTION AND LIQUID LEVEL DATA
Triangle Texaco
Mount Holly, Gaston County, North Carolina
201 North Main Street
Incident # 21112
09/05/01 --15.17 --570.10
01/13/03 --13.63 --571.64
05/21/12 --13.55 --571.72
11/12/14 --14.60 --570.67
02/10/15 --13.16 --572.11
09/27/23
09/05/01 --14.39 --569.08
01/13/03 --12.98 --570.49
05/21/12 --12.09 --571.38
11/12/14 --13.53 --569.94
02/10/15 --10.73 --572.74
10/05/15 --11.08 --572.39
04/21/16 --14.37 --569.10
10/19/16 --13.64 --569.83
09/27/23 --14.80 --568.67
09/05/01 --13.45 --574.62
01/13/03 --12.05 --576.02
05/21/12 --11.84 --576.23
11/12/14 --12.39 --575.68
02/10/15 --13.14 --574.93
09/27/23
09/05/01 --12.83 --575.87
01/13/03 --7.30 --581.40
05/21/12 --11.03 --577.67
11/12/14 --11.43 --577.27
02/10/15 --11.71 --576.99
09/27/23 --11.55 --577.15
09/05/01 --26.25 --576.46
01/13/03 --24.59 --578.12
05/21/12 --24.34 --578.37
11/12/14 --24.64 --578.07
02/10/15 --24.64 --578.07
09/05/01 --9.64 --572.18
01/13/03 --8.37 --573.45
05/21/12 --8.40 --573.42
11/12/14 --9.98 --571.84
02/10/15 --8.41 --573.41
09/27/23
09/05/01 --10.68 --574.37
01/13/03 --9.44 --575.61
05/21/12 --9.21 --575.84
11/12/14 --9.88 --575.17
02/10/15 --9.05 --576.00
09/27/23
09/05/01 --28.53 --568.77
01/13/03 --NM --NM
05/21/12 --NM --NM
11/12/14 --NM --NM
02/10/15 --NM --NM
09/05/01 --10.51 --569.54
01/13/03 --8.95 --571.10
05/21/12 --8.31 --571.74
11/12/14 --9.85 --570.20
02/10/15 --8.45 --571.60
09/27/23
09/05/01 --10.42 --569.57
01/13/03 --9.18 --570.81
05/21/12 --8.80 --571.19
11/12/14 --9.76 --570.23
02/10/15 --8.80 --571.19
10/05/15 --9.95 --570.04
04/21/16 --10.07 --569.92
10/19/16 --10.25 --569.74
09/27/23
1)
2)
3)
4)
5)
MW-14 3/7/2001 588.7 2 0 - 5 5 - 20
MW-16 4/5/2001 581.82 2 0 - 5 5 - 20
0 - 20
20 - 35
20 - 35
Unable to Locate Well
Unable to Locate Well
Unable to Locate Well
0 - 10 10 - 25
0 - 6 6 - 16
0 - 5 5 - 20
9 - 19579.998/23/2001MW-21 2 0 - 9
Notes:
Top of Casing (TOC) elevations & data provided by previous consultants prior to June 2023.
NM = Not Measured.
BGS - Below Ground Surface.
BTOC - Below Top of Casing.
If free product present groundwater elevation calculated by [TOC-DTW]+[free product thickness x 0.8581].
2
2
602.71
MW-19
MW-15
8/22/2001
3/7/2001
597.3
0 - 20
MW-11 3/8/2001 585.27 2
MW-12 3/7/2001 583.47 2
MW-13 3/7/2001 588.07 2
Unable to Locate Well
Unable to Locate Well
MW-20 8/23/2001 580.05 2 0 - 9 9 - 19
Unable to Locate Well
MW-17 8/23/2001 585.05 2 0 - 9 9 - 19
Page 3 of 4
Well ID Date Installed
Top of Casing
Elevation
(ft)
Well Diameter
(in)
Well Casing
Depth
(ft-BGS)
Screen Interval
(ft-BGS)
Date of
Measurement
Depth to Product
(ft-BTOC)
Depth To Water
(ft-BTOC)
Product Thickness
(ft)
Groundwater
Elevation
(ft)
TABLE B-7
MONITORING WELL CONSTRUCTION AND LIQUID LEVEL DATA
Triangle Texaco
Mount Holly, Gaston County, North Carolina
201 North Main Street
Incident # 21112
09/05/01 -- 21.18 -- 574.33
01/13/03 -- 19.60 -- 575.91
05/21/12 -- 19.35 -- 576.16
11/12/14 -- 19.97 -- 575.54
02/10/15 -- 21.40 -- 574.11
09/27/23 -- 19.90 -- 575.61
09/05/01 -- 22.58 -- 575.07
01/13/03 -- 21.70 -- 575.95
05/21/12 -- 20.69 -- 576.96
11/12/14 -- 21.17 -- 576.48
02/10/15 -- 24.67 -- 572.98
09/27/23 -- 21.30 -- 576.35
05/21/12 -- 22.94 -- 577.09
11/12/14 22.4 22.39 0.01 577.65
02/10/15 -- 24.54 -- 575.49
10/05/15 -- 23.62 -- 576.41
04/21/16 -- 21.12 -- 578.91
10/19/16 -- 20.88 -- 579.15
11/12/14 -- 20.51 -- 576.45
02/10/15 -- 22.17 -- 574.79
11/12/14 -- 20.16 -- 576.59
02/10/15 -- 30.74 -- 566.01
10/05/15 -- 32.50 -- 564.25
04/21/16 -- 28.47 -- 568.28
10/19/16 -- 19.92 -- 576.83
05/21/12 -- 20.25 -- 576.47
11/12/14 -- 20.36 -- 576.36
02/10/15 -- 20.91 -- 575.81
04/21/16 -- 24.14 -- 572.58
10/19/16 -- 19.76 -- 576.96
11/12/14 -- 17.99 -- 574.60
02/10/15 -- 18.68 -- 573.91
10/05/15 -- 33.19 -- 559.40
04/21/16 -- 21.91 -- 570.68
11/12/14 -- 13.58 -- 570.43
02/10/15 -- 13.79 -- 570.22
04/21/16 -- 18.24 -- 565.77
1)
2)
3)
4)
5)
0 - 10
Unknown
Unknown
10/10/2001
Unknown
Unknown
10 - 25
Unknown
Unknown
10 - 50
Unknown
Unknown584.01
2
2
2
2
2
2
Unknown
600.03
596.96
596.75
10/10/2001
Unknown
0 - 10
UnknownDPE-2
DPE-1(SVE-1)
596.72
592.59
UnknownDPE-6
DPE-5
DPE-4(RW-1)
DPE-3
If free product present groundwater elevation calculated by [TOC-DTW]+[free product thickness x 0.8581].
NM = Not Measured.
BGS - Below Ground Surface.
BTOC - Below Top of Casing.
Notes:
Top of Casing (TOC) elevations & data provided by previous consultants prior to June 2023.
DMW-2
DMW-1 1/30/1995 595.51 2 0 - 65 65 - 70
55 - 600 - 552597.654/17/2000
Page 4 of 4
APPENDIX A
LABORATORY ANALYTICAL REPORT & CHAIN OF CUSTODY

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

10/9/2023
Withers & Ravenel Flora D'Souza
115 Mackenan Dr. BUILDING 117 Cary, NC, 27511
Ref: Analytical Testing
Lab Report Number: 23-272-0023 Client Project Description: Triangle Texaco #2
23-0307-ET
Dear Flora D'Souza:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 9/29/2023 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 65
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202437735State ProgramNorth Carolina
12/31/2023402State ProgramNorth Carolina
07/31/202499012State ProgramSouth Carolina
12/31/202399012State ProgramSouth Carolina
Page 1 of 1 00016/23-272-0023
Page 2 of 65
Report Number:
Sample Summary Table
Client Project Description:
23-272-0023
Triangle Texaco #2
23-0307-ET
Lab No Client Sample ID Matrix Date Collected Date Received
09/26/2023 15:00Aqueous 96622 MW-1A 09/29/2023 12:28
09/26/2023 15:43Aqueous 96623 MW-2 09/29/2023 12:28
09/26/2023 15:13Aqueous 96624 MW-3A 09/29/2023 12:28
09/26/2023 15:55Aqueous 96625 MW-6 09/29/2023 12:28
09/26/2023 16:30Aqueous 96626 MW-1 09/29/2023 12:28
09/26/2023 16:10Aqueous 96627 MW-8 09/29/2023 12:28
09/26/2023 15:50Aqueous 96628 MW-10 09/29/2023 12:28
09/26/2023 15:05Aqueous 96629 MW-12 09/29/2023 12:28
09/26/2023 16:05Aqueous 96630 MW-14 09/29/2023 12:28
09/26/2023 15:31Aqueous 96631 DMW-1 09/29/2023 12:28
09/26/2023 15:20Aqueous 96632 DMW-2 09/29/2023 12:28
Page 3 of 65
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-272-0023
Report Limit
Project:Triangle Texaco #2
V 96622MW-1A
975 10/05/2023 09:186200BBenzeneµg/L 50.0
224 10/05/2023 09:186200BMethyl tert-butyl ether (MTBE)µg/L 100
V 96623MW-2
0.614 10/05/2023 17:106200Bn-Butylbenzene µg/L 0.500
0.774 10/05/2023 17:106200Bsec-Butyl benzene µg/L 0.500
1.38 10/05/2023 17:106200BIsopropylbenzeneµg/L 0.500
2.88 10/05/2023 17:106200Bn-Propylbenzene µg/L 0.500
10.1 10/05/2023 17:106200B1,2,4-Trimethylbenzene µg/L 0.500
V 96625MW-6
0.524 10/05/2023 03:556200BBenzeneµg/L 0.500
0.919 10/05/2023 03:556200BEthylbenzeneµg/L 0.500
0.516 10/05/2023 03:556200Bn-Propylbenzene µg/L 0.500
1.08 10/05/2023 03:556200B1,2,4-Trimethylbenzene µg/L 0.500
V 96626MW-1
4830 10/05/2023 09:436200BBenzeneµg/L 50.0
1700 10/05/2023 09:436200BEthylbenzeneµg/L 50.0
99.2 10/05/2023 09:436200BIsopropylbenzeneµg/L 50.0
207 10/05/2023 09:436200BNaphthaleneµg/L 100
178 10/05/2023 09:436200Bn-Propylbenzene µg/L 50.0
3060 10/05/2023 09:436200BTolueneµg/L 50.0
1040 10/05/2023 09:436200B1,2,4-Trimethylbenzene µg/L 50.0
369 10/05/2023 09:436200B1,3,5-Trimethylbenzene µg/L 50.0
2200 10/05/2023 09:436200Bo-Xylene µg/L 50.0
6480 10/05/2023 09:436200Bm,p-Xylene µg/L 100
8680 10/05/2023 09:436200BXylene (Total)µg/L 50.0
V 96627MW-8
203 10/05/2023 10:086200BBenzeneµg/L 50.0
1390 10/05/2023 10:086200BEthylbenzeneµg/L 50.0
108 10/05/2023 10:086200BIsopropylbenzeneµg/L 50.0
502 10/05/2023 10:086200BNaphthaleneµg/L 100
182 10/05/2023 10:086200Bn-Propylbenzene µg/L 50.0
141 10/05/2023 10:086200BTolueneµg/L 50.0
1590 10/05/2023 10:086200B1,2,4-Trimethylbenzene µg/L 50.0
528 10/05/2023 10:086200B1,3,5-Trimethylbenzene µg/L 50.0
Page 4 of 65
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-272-0023
Report Limit
Project:Triangle Texaco #2
V 96627MW-8
190 10/05/2023 10:086200Bo-Xylene µg/L 50.0
4880 10/05/2023 10:086200Bm,p-Xylene µg/L 100
5070 10/05/2023 10:086200BXylene (Total)µg/L 50.0
V 96628MW-10
8.84 10/05/2023 21:346200BBenzeneµg/L 5.00
21.4 10/05/2023 21:346200BEthylbenzeneµg/L 5.00
26.9 10/05/2023 21:346200B1,2,4-Trimethylbenzene µg/L 5.00
13.4 10/05/2023 21:346200Bo-Xylene µg/L 5.00
13.4 10/05/2023 21:346200BXylene (Total)µg/L 5.00
Page 5 of 65

Client: Withers & Ravenel CASE NARRATIVE
Project: Triangle Texaco #2 Lab Report Number: 23-272-0023
Date: 10/9/2023
Volatile Organic Compounds - GC/MS Method 6200B Sample 96622 (MW-1A) QC Batch No: V38719/V38718
The sample was diluted due to the nature of the sample matrix. Reporting limits have been adjusted accordingly.
Analyte: 1,2,3-Trichlorobenzene QC Batch No: V38719/V38718
Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits.
Analyte: 1,2,3-Trichlorobenzene QC Batch No: V38719/V38718
Recovery for the LCS exceeded the upper acceptance limit. However, all sample results associated with the batch are below the MQL, so this high bias had no impact upon the client data. The results are considered to be
acceptable.
Analyte: Bromomethane QC Batch No: V38781/V38718
Recovery for the LCS exceeded the upper acceptance limit. However, all sample results associated with the batch are below the MQL, so this high bias had no impact upon the client data. The results are considered to be
acceptable. Sample 96628 (MW-10) QC Batch No: V38781/V38780
The sample was diluted due to the nature of the sample matrix. Reporting limits have been adjusted accordingly.

Page 6 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-1A
96622 Matrix:
9/26/2023 15:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1000 µg/L 1000Acetone 100 10/05/23 09:18 6200BMSA
975 µg/L 50.0Benzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Bromobenzene 100 10/05/23 09:18 6200BMSA
<100 µg/L 100Bromochloromethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Bromodichloromethane 100 10/05/23 09:18 6200BMSA
<500 µg/L 500Bromoform 100 10/05/23 09:18 6200BMSA
<100 µg/L 100Bromomethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0n-Butylbenzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0sec-Butyl benzene 100 10/05/23 09:18 6200BMSA
<200 µg/L 200tert-Butyl benzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Carbon Tetrachloride 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Chlorobenzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Chlorodibromomethane 100 10/05/23 09:18 6200BMSA
<100 µg/L 100Chloroethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Chloroform 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Chloromethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.02-Chlorotoluene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.04-Chlorotoluene 100 10/05/23 09:18 6200BMSA
<200 µg/L 2001,2-Dibromo-3-Chloropropane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,2-Dibromoethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Dibromomethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,2-Dichlorobenzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,3-Dichlorobenzene 100 10/05/23 09:18 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 7 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-1A
96622 Matrix:
9/26/2023 15:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.01,4-Dichlorobenzene 100 10/05/23 09:18 6200BMSA
<500 µg/L 500Dichlorodifluoromethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,2-Dichloroethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0cis-1,2-Dichloroethene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0trans-1,2-Dichloroethene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,2-Dichloropropane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,3-Dichloropropane 100 10/05/23 09:18 6200BMSA
<200 µg/L 2002,2-Dichloropropane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,1-Dichloropropene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0cis-1,3-Dichloropropene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0trans-1,3-Dichloropropene 100 10/05/23 09:18 6200BMSA
<20000 µg/L 20000Ethanol 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Ethylbenzene 100 10/05/23 09:18 6200BMSA
<300 µg/L 300Hexachlorobutadiene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Di-Isopropyl Ether (DIPE)100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Isopropylbenzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.04-Isopropyl toluene 100 10/05/23 09:18 6200BMSA
<100 µg/L 1002-Hexanone 100 10/05/23 09:18 6200BMSA
<500 µg/L 500Methyl Ethyl Ketone (MEK)100 10/05/23 09:18 6200BMSA
<200 µg/L 200Methylene Chloride 100 10/05/23 09:18 6200BMSA
224 µg/L 100Methyl tert-butyl ether (MTBE)100 10/05/23 09:18 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 8 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-1A
96622 Matrix:
9/26/2023 15:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<100 µg/L 1004-Methyl-2-Pentanone 100 10/05/23 09:18 6200BMSA
<100 µg/L 100Naphthalene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0n-Propylbenzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Styrene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Tetrachloroethene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Toluene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,2,3-Trichlorobenzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,2,4-Trichlorobenzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,1,1-Trichloroethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,1,2-Trichloroethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Trichloroethene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Trichlorofluoromethane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,2,3-Trichloropropane 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,2,4-Trimethylbenzene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.01,3,5-Trimethylbenzene 100 10/05/23 09:18 6200BMSA
<500 µg/L 500Vinyl Acetate 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0Vinyl Chloride 100 10/05/23 09:18 6200BMSA
<100 µg/L 100m,p-Xylene 100 10/05/23 09:18 6200BMSA
<50.0 µg/L 50.0o-Xylene 100 10/05/23 09:18 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 9 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-1A
96622 Matrix:
9/26/2023 15:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.0Xylene (Total)100 10/05/23 09:18 6200B
Surrogate: 4-Bromofluorobenzene 95.2 Limits: 70-130%10/05/23 09:18100 MSA V38719
Surrogate: Dibromofluoromethane 101 Limits: 70-130%10/05/23 09:18100 MSA V38719
Surrogate: 1,2-Dichloroethane - d4 95.4 Limits: 70-130%10/05/23 09:18100 MSA V38719
Surrogate: Toluene-d8 96.0 Limits: 70-130%10/05/23 09:18100 MSA V38719
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 10 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-2
96623 Matrix:
9/26/2023 15:43
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Benzene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 10/05/23 17:10 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 10/05/23 17:10 6200BMSA
<5.00 µg/L 5.00Bromoform 1 10/05/23 17:10 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 10/05/23 17:10 6200BMSA
0.614 µg/L 0.500n-Butylbenzene 1 10/05/23 17:10 6200BMSA
0.774 µg/L 0.500sec-Butyl benzene 1 10/05/23 17:10 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 10/05/23 17:10 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Chloroform 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 10/05/23 17:10 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 10/05/23 17:10 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 11 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-2
96623 Matrix:
9/26/2023 15:43
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 10/05/23 17:10 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 10/05/23 17:10 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 10/05/23 17:10 6200BMSA
<200 µg/L 200Ethanol 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 10/05/23 17:10 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 10/05/23 17:10 6200BMSA
1.38 µg/L 0.500Isopropylbenzene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 10/05/23 17:10 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 10/05/23 17:10 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 10/05/23 17:10 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 10/05/23 17:10 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 10/05/23 17:10 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 12 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-2
96623 Matrix:
9/26/2023 15:43
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 10/05/23 17:10 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 10/05/23 17:10 6200BMSA
2.88 µg/L 0.500n-Propylbenzene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Styrene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Toluene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 10/05/23 17:10 6200BMSA
10.1 µg/L 0.5001,2,4-Trimethylbenzene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 10/05/23 17:10 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 10/05/23 17:10 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 10/05/23 17:10 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 10/05/23 17:10 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 13 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-2
96623 Matrix:
9/26/2023 15:43
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 10/05/23 17:10 6200B
Surrogate: 4-Bromofluorobenzene 104 Limits: 70-130%10/05/23 17:101 MSA V38781
Surrogate: Dibromofluoromethane 93.4 Limits: 70-130%10/05/23 17:101 MSA V38781
Surrogate: 1,2-Dichloroethane - d4 86.6 Limits: 70-130%10/05/23 17:101 MSA V38781
Surrogate: Toluene-d8 98.8 Limits: 70-130%10/05/23 17:101 MSA V38781
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 14 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-3A
96624 Matrix:
9/26/2023 15:13
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Benzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 10/05/23 03:30 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 10/05/23 03:30 6200BMSA
<5.00 µg/L 5.00Bromoform 1 10/05/23 03:30 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 10/05/23 03:30 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 10/05/23 03:30 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Chloroform 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 10/05/23 03:30 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 10/05/23 03:30 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 15 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-3A
96624 Matrix:
9/26/2023 15:13
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 10/05/23 03:30 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 10/05/23 03:30 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 10/05/23 03:30 6200BMSA
<200 µg/L 200Ethanol 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 10/05/23 03:30 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 10/05/23 03:30 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 10/05/23 03:30 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 10/05/23 03:30 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 10/05/23 03:30 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 10/05/23 03:30 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 16 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-3A
96624 Matrix:
9/26/2023 15:13
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 10/05/23 03:30 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Styrene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Toluene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 10/05/23 03:30 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 10/05/23 03:30 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 10/05/23 03:30 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 10/05/23 03:30 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 17 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-3A
96624 Matrix:
9/26/2023 15:13
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 10/05/23 03:30 6200B
Surrogate: 4-Bromofluorobenzene 95.4 Limits: 70-130%10/05/23 03:301 MSA V38719
Surrogate: Dibromofluoromethane 101 Limits: 70-130%10/05/23 03:301 MSA V38719
Surrogate: 1,2-Dichloroethane - d4 95.4 Limits: 70-130%10/05/23 03:301 MSA V38719
Surrogate: Toluene-d8 94.8 Limits: 70-130%10/05/23 03:301 MSA V38719
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 18 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-6
96625 Matrix:
9/26/2023 15:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 10/05/23 03:55 6200BMSA
0.524 µg/L 0.500Benzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 10/05/23 03:55 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 10/05/23 03:55 6200BMSA
<5.00 µg/L 5.00Bromoform 1 10/05/23 03:55 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 10/05/23 03:55 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 10/05/23 03:55 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Chloroform 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 10/05/23 03:55 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 10/05/23 03:55 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 19 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-6
96625 Matrix:
9/26/2023 15:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 10/05/23 03:55 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 10/05/23 03:55 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 10/05/23 03:55 6200BMSA
<200 µg/L 200Ethanol 1 10/05/23 03:55 6200BMSA
0.919 µg/L 0.500Ethylbenzene 1 10/05/23 03:55 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 10/05/23 03:55 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 10/05/23 03:55 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 10/05/23 03:55 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 10/05/23 03:55 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 10/05/23 03:55 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 20 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-6
96625 Matrix:
9/26/2023 15:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 10/05/23 03:55 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 10/05/23 03:55 6200BMSA
0.516 µg/L 0.500n-Propylbenzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Styrene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Toluene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 10/05/23 03:55 6200BMSA
1.08 µg/L 0.5001,2,4-Trimethylbenzene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 10/05/23 03:55 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 10/05/23 03:55 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 10/05/23 03:55 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 10/05/23 03:55 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 21 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-6
96625 Matrix:
9/26/2023 15:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 10/05/23 03:55 6200B
Surrogate: 4-Bromofluorobenzene 97.2 Limits: 70-130%10/05/23 03:551 MSA V38719
Surrogate: Dibromofluoromethane 101 Limits: 70-130%10/05/23 03:551 MSA V38719
Surrogate: 1,2-Dichloroethane - d4 95.2 Limits: 70-130%10/05/23 03:551 MSA V38719
Surrogate: Toluene-d8 95.4 Limits: 70-130%10/05/23 03:551 MSA V38719
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 22 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-1
96626 Matrix:
9/26/2023 16:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1000 µg/L 1000Acetone 100 10/05/23 09:43 6200BMSA
4830 µg/L 50.0Benzene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Bromobenzene 100 10/05/23 09:43 6200BMSA
<100 µg/L 100Bromochloromethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Bromodichloromethane 100 10/05/23 09:43 6200BMSA
<500 µg/L 500Bromoform 100 10/05/23 09:43 6200BMSA
<100 µg/L 100Bromomethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0n-Butylbenzene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0sec-Butyl benzene 100 10/05/23 09:43 6200BMSA
<200 µg/L 200tert-Butyl benzene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Carbon Tetrachloride 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Chlorobenzene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Chlorodibromomethane 100 10/05/23 09:43 6200BMSA
<100 µg/L 100Chloroethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Chloroform 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Chloromethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.02-Chlorotoluene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.04-Chlorotoluene 100 10/05/23 09:43 6200BMSA
<200 µg/L 2001,2-Dibromo-3-Chloropropane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,2-Dibromoethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Dibromomethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,2-Dichlorobenzene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,3-Dichlorobenzene 100 10/05/23 09:43 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 23 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-1
96626 Matrix:
9/26/2023 16:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.01,4-Dichlorobenzene 100 10/05/23 09:43 6200BMSA
<500 µg/L 500Dichlorodifluoromethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,2-Dichloroethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0cis-1,2-Dichloroethene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0trans-1,2-Dichloroethene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,2-Dichloropropane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,3-Dichloropropane 100 10/05/23 09:43 6200BMSA
<200 µg/L 2002,2-Dichloropropane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,1-Dichloropropene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0cis-1,3-Dichloropropene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0trans-1,3-Dichloropropene 100 10/05/23 09:43 6200BMSA
<20000 µg/L 20000Ethanol 100 10/05/23 09:43 6200BMSA
1700 µg/L 50.0Ethylbenzene 100 10/05/23 09:43 6200BMSA
<300 µg/L 300Hexachlorobutadiene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Di-Isopropyl Ether (DIPE)100 10/05/23 09:43 6200BMSA
99.2 µg/L 50.0Isopropylbenzene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.04-Isopropyl toluene 100 10/05/23 09:43 6200BMSA
<100 µg/L 1002-Hexanone 100 10/05/23 09:43 6200BMSA
<500 µg/L 500Methyl Ethyl Ketone (MEK)100 10/05/23 09:43 6200BMSA
<200 µg/L 200Methylene Chloride 100 10/05/23 09:43 6200BMSA
<100 µg/L 100Methyl tert-butyl ether (MTBE)100 10/05/23 09:43 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 24 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-1
96626 Matrix:
9/26/2023 16:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<100 µg/L 1004-Methyl-2-Pentanone 100 10/05/23 09:43 6200BMSA
207 µg/L 100Naphthalene 100 10/05/23 09:43 6200BMSA
178 µg/L 50.0n-Propylbenzene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Styrene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Tetrachloroethene 100 10/05/23 09:43 6200BMSA
3060 µg/L 50.0Toluene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,2,3-Trichlorobenzene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,2,4-Trichlorobenzene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,1,1-Trichloroethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,1,2-Trichloroethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Trichloroethene 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Trichlorofluoromethane 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.01,2,3-Trichloropropane 100 10/05/23 09:43 6200BMSA
1040 µg/L 50.01,2,4-Trimethylbenzene 100 10/05/23 09:43 6200BMSA
369 µg/L 50.01,3,5-Trimethylbenzene 100 10/05/23 09:43 6200BMSA
<500 µg/L 500Vinyl Acetate 100 10/05/23 09:43 6200BMSA
<50.0 µg/L 50.0Vinyl Chloride 100 10/05/23 09:43 6200BMSA
6480 µg/L 100m,p-Xylene 100 10/05/23 09:43 6200BMSA
2200 µg/L 50.0o-Xylene 100 10/05/23 09:43 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 25 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-1
96626 Matrix:
9/26/2023 16:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
8680 µg/L 50.0Xylene (Total)100 10/05/23 09:43 6200B
Surrogate: 4-Bromofluorobenzene 96.0 Limits: 70-130%10/05/23 09:43100 MSA V38719
Surrogate: Dibromofluoromethane 99.6 Limits: 70-130%10/05/23 09:43100 MSA V38719
Surrogate: 1,2-Dichloroethane - d4 91.2 Limits: 70-130%10/05/23 09:43100 MSA V38719
Surrogate: Toluene-d8 95.0 Limits: 70-130%10/05/23 09:43100 MSA V38719
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 26 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-8
96627 Matrix:
9/26/2023 16:10
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1000 µg/L 1000Acetone 100 10/05/23 10:08 6200BMSA
203 µg/L 50.0Benzene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Bromobenzene 100 10/05/23 10:08 6200BMSA
<100 µg/L 100Bromochloromethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Bromodichloromethane 100 10/05/23 10:08 6200BMSA
<500 µg/L 500Bromoform 100 10/05/23 10:08 6200BMSA
<100 µg/L 100Bromomethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0n-Butylbenzene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0sec-Butyl benzene 100 10/05/23 10:08 6200BMSA
<200 µg/L 200tert-Butyl benzene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Carbon Tetrachloride 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Chlorobenzene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Chlorodibromomethane 100 10/05/23 10:08 6200BMSA
<100 µg/L 100Chloroethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Chloroform 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Chloromethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.02-Chlorotoluene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.04-Chlorotoluene 100 10/05/23 10:08 6200BMSA
<200 µg/L 2001,2-Dibromo-3-Chloropropane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,2-Dibromoethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Dibromomethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,2-Dichlorobenzene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,3-Dichlorobenzene 100 10/05/23 10:08 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 27 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-8
96627 Matrix:
9/26/2023 16:10
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.01,4-Dichlorobenzene 100 10/05/23 10:08 6200BMSA
<500 µg/L 500Dichlorodifluoromethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,2-Dichloroethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0cis-1,2-Dichloroethene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0trans-1,2-Dichloroethene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,2-Dichloropropane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,3-Dichloropropane 100 10/05/23 10:08 6200BMSA
<200 µg/L 2002,2-Dichloropropane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,1-Dichloropropene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0cis-1,3-Dichloropropene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0trans-1,3-Dichloropropene 100 10/05/23 10:08 6200BMSA
<20000 µg/L 20000Ethanol 100 10/05/23 10:08 6200BMSA
1390 µg/L 50.0Ethylbenzene 100 10/05/23 10:08 6200BMSA
<300 µg/L 300Hexachlorobutadiene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Di-Isopropyl Ether (DIPE)100 10/05/23 10:08 6200BMSA
108 µg/L 50.0Isopropylbenzene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.04-Isopropyl toluene 100 10/05/23 10:08 6200BMSA
<100 µg/L 1002-Hexanone 100 10/05/23 10:08 6200BMSA
<500 µg/L 500Methyl Ethyl Ketone (MEK)100 10/05/23 10:08 6200BMSA
<200 µg/L 200Methylene Chloride 100 10/05/23 10:08 6200BMSA
<100 µg/L 100Methyl tert-butyl ether (MTBE)100 10/05/23 10:08 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 28 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-8
96627 Matrix:
9/26/2023 16:10
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<100 µg/L 1004-Methyl-2-Pentanone 100 10/05/23 10:08 6200BMSA
502 µg/L 100Naphthalene 100 10/05/23 10:08 6200BMSA
182 µg/L 50.0n-Propylbenzene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Styrene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Tetrachloroethene 100 10/05/23 10:08 6200BMSA
141 µg/L 50.0Toluene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,2,3-Trichlorobenzene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,2,4-Trichlorobenzene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,1,1-Trichloroethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,1,2-Trichloroethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Trichloroethene 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Trichlorofluoromethane 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.01,2,3-Trichloropropane 100 10/05/23 10:08 6200BMSA
1590 µg/L 50.01,2,4-Trimethylbenzene 100 10/05/23 10:08 6200BMSA
528 µg/L 50.01,3,5-Trimethylbenzene 100 10/05/23 10:08 6200BMSA
<500 µg/L 500Vinyl Acetate 100 10/05/23 10:08 6200BMSA
<50.0 µg/L 50.0Vinyl Chloride 100 10/05/23 10:08 6200BMSA
4880 µg/L 100m,p-Xylene 100 10/05/23 10:08 6200BMSA
190 µg/L 50.0o-Xylene 100 10/05/23 10:08 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 29 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-8
96627 Matrix:
9/26/2023 16:10
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
5070 µg/L 50.0Xylene (Total)100 10/05/23 10:08 6200B
Surrogate: 4-Bromofluorobenzene 95.2 Limits: 70-130%10/05/23 10:08100 MSA V38719
Surrogate: Dibromofluoromethane 101 Limits: 70-130%10/05/23 10:08100 MSA V38719
Surrogate: 1,2-Dichloroethane - d4 95.4 Limits: 70-130%10/05/23 10:08100 MSA V38719
Surrogate: Toluene-d8 96.4 Limits: 70-130%10/05/23 10:08100 MSA V38719
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 30 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-10
96628 Matrix:
9/26/2023 15:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<100 µg/L 100Acetone 10 10/05/23 21:34 6200BMSA
8.84 µg/L 5.00Benzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Bromobenzene 10 10/05/23 21:34 6200BMSA
<10.0 µg/L 10.0Bromochloromethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Bromodichloromethane 10 10/05/23 21:34 6200BMSA
<50.0 µg/L 50.0Bromoform 10 10/05/23 21:34 6200BMSA
<10.0 µg/L 10.0Bromomethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00n-Butylbenzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00sec-Butyl benzene 10 10/05/23 21:34 6200BMSA
<20.0 µg/L 20.0tert-Butyl benzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Carbon Tetrachloride 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Chlorobenzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Chlorodibromomethane 10 10/05/23 21:34 6200BMSA
<10.0 µg/L 10.0Chloroethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Chloroform 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Chloromethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.002-Chlorotoluene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.004-Chlorotoluene 10 10/05/23 21:34 6200BMSA
<20.0 µg/L 20.01,2-Dibromo-3-Chloropropane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,2-Dibromoethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Dibromomethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,2-Dichlorobenzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,3-Dichlorobenzene 10 10/05/23 21:34 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 31 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-10
96628 Matrix:
9/26/2023 15:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<5.00 µg/L 5.001,4-Dichlorobenzene 10 10/05/23 21:34 6200BMSA
<50.0 µg/L 50.0Dichlorodifluoromethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,1-Dichloroethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,2-Dichloroethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,1-Dichloroethene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00cis-1,2-Dichloroethene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00trans-1,2-Dichloroethene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,2-Dichloropropane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,3-Dichloropropane 10 10/05/23 21:34 6200BMSA
<20.0 µg/L 20.02,2-Dichloropropane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,1-Dichloropropene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00cis-1,3-Dichloropropene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00trans-1,3-Dichloropropene 10 10/05/23 21:34 6200BMSA
<2000 µg/L 2000Ethanol 10 10/05/23 21:34 6200BMSA
21.4 µg/L 5.00Ethylbenzene 10 10/05/23 21:34 6200BMSA
<30.0 µg/L 30.0Hexachlorobutadiene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Di-Isopropyl Ether (DIPE)10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Isopropylbenzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.004-Isopropyl toluene 10 10/05/23 21:34 6200BMSA
<10.0 µg/L 10.02-Hexanone 10 10/05/23 21:34 6200BMSA
<50.0 µg/L 50.0Methyl Ethyl Ketone (MEK)10 10/05/23 21:34 6200BMSA
<20.0 µg/L 20.0Methylene Chloride 10 10/05/23 21:34 6200BMSA
<10.0 µg/L 10.0Methyl tert-butyl ether (MTBE)10 10/05/23 21:34 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 32 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-10
96628 Matrix:
9/26/2023 15:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.04-Methyl-2-Pentanone 10 10/05/23 21:34 6200BMSA
<10.0 µg/L 10.0Naphthalene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00n-Propylbenzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Styrene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,1,1,2-Tetrachloroethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,1,2,2-Tetrachloroethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Tetrachloroethene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Toluene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,2,3-Trichlorobenzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,2,4-Trichlorobenzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,1,1-Trichloroethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,1,2-Trichloroethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Trichloroethene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Trichlorofluoromethane 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,2,3-Trichloropropane 10 10/05/23 21:34 6200BMSA
26.9 µg/L 5.001,2,4-Trimethylbenzene 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.001,3,5-Trimethylbenzene 10 10/05/23 21:34 6200BMSA
<50.0 µg/L 50.0Vinyl Acetate 10 10/05/23 21:34 6200BMSA
<5.00 µg/L 5.00Vinyl Chloride 10 10/05/23 21:34 6200BMSA
<10.0 µg/L 10.0m,p-Xylene 10 10/05/23 21:34 6200BMSA
13.4 µg/L 5.00o-Xylene 10 10/05/23 21:34 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 33 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-10
96628 Matrix:
9/26/2023 15:50
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
13.4 µg/L 5.00Xylene (Total)10 10/05/23 21:34 6200B
Surrogate: 4-Bromofluorobenzene 105 Limits: 70-130%10/05/23 21:3410 MSA V38781
Surrogate: Dibromofluoromethane 94.8 Limits: 70-130%10/05/23 21:3410 MSA V38781
Surrogate: 1,2-Dichloroethane - d4 86.0 Limits: 70-130%10/05/23 21:3410 MSA V38781
Surrogate: Toluene-d8 100 Limits: 70-130%10/05/23 21:3410 MSA V38781
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 34 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-12
96629 Matrix:
9/26/2023 15:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Benzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 10/05/23 04:20 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 10/05/23 04:20 6200BMSA
<5.00 µg/L 5.00Bromoform 1 10/05/23 04:20 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 10/05/23 04:20 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 10/05/23 04:20 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Chloroform 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 10/05/23 04:20 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 10/05/23 04:20 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 35 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-12
96629 Matrix:
9/26/2023 15:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 10/05/23 04:20 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 10/05/23 04:20 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 10/05/23 04:20 6200BMSA
<200 µg/L 200Ethanol 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 10/05/23 04:20 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 10/05/23 04:20 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 10/05/23 04:20 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 10/05/23 04:20 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 10/05/23 04:20 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 10/05/23 04:20 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 36 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-12
96629 Matrix:
9/26/2023 15:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 10/05/23 04:20 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Styrene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Toluene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 10/05/23 04:20 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 10/05/23 04:20 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 10/05/23 04:20 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 10/05/23 04:20 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 37 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-12
96629 Matrix:
9/26/2023 15:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 10/05/23 04:20 6200B
Surrogate: 4-Bromofluorobenzene 97.8 Limits: 70-130%10/05/23 04:201 MSA V38719
Surrogate: Dibromofluoromethane 100 Limits: 70-130%10/05/23 04:201 MSA V38719
Surrogate: 1,2-Dichloroethane - d4 93.8 Limits: 70-130%10/05/23 04:201 MSA V38719
Surrogate: Toluene-d8 96.0 Limits: 70-130%10/05/23 04:201 MSA V38719
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 38 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-14
96630 Matrix:
9/26/2023 16:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Benzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 10/05/23 04:44 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 10/05/23 04:44 6200BMSA
<5.00 µg/L 5.00Bromoform 1 10/05/23 04:44 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 10/05/23 04:44 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 10/05/23 04:44 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Chloroform 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 10/05/23 04:44 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 10/05/23 04:44 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 39 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-14
96630 Matrix:
9/26/2023 16:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 10/05/23 04:44 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 10/05/23 04:44 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 10/05/23 04:44 6200BMSA
<200 µg/L 200Ethanol 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 10/05/23 04:44 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 10/05/23 04:44 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 10/05/23 04:44 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 10/05/23 04:44 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 10/05/23 04:44 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 10/05/23 04:44 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 40 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-14
96630 Matrix:
9/26/2023 16:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 10/05/23 04:44 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Styrene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Toluene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 10/05/23 04:44 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 10/05/23 04:44 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 10/05/23 04:44 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 10/05/23 04:44 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 41 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:MW-14
96630 Matrix:
9/26/2023 16:05
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 10/05/23 04:44 6200B
Surrogate: 4-Bromofluorobenzene 95.6 Limits: 70-130%10/05/23 04:441 MSA V38719
Surrogate: Dibromofluoromethane 102 Limits: 70-130%10/05/23 04:441 MSA V38719
Surrogate: 1,2-Dichloroethane - d4 95.6 Limits: 70-130%10/05/23 04:441 MSA V38719
Surrogate: Toluene-d8 95.0 Limits: 70-130%10/05/23 04:441 MSA V38719
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 42 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:DMW-1
96631 Matrix:
9/26/2023 15:31
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Benzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 10/05/23 05:09 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 10/05/23 05:09 6200BMSA
<5.00 µg/L 5.00Bromoform 1 10/05/23 05:09 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 10/05/23 05:09 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 10/05/23 05:09 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Chloroform 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 10/05/23 05:09 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 10/05/23 05:09 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 43 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:DMW-1
96631 Matrix:
9/26/2023 15:31
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 10/05/23 05:09 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 10/05/23 05:09 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 10/05/23 05:09 6200BMSA
<200 µg/L 200Ethanol 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 10/05/23 05:09 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 10/05/23 05:09 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 10/05/23 05:09 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 10/05/23 05:09 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 10/05/23 05:09 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 10/05/23 05:09 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 44 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:DMW-1
96631 Matrix:
9/26/2023 15:31
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 10/05/23 05:09 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Styrene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Toluene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 10/05/23 05:09 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 10/05/23 05:09 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 10/05/23 05:09 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 10/05/23 05:09 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 45 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:DMW-1
96631 Matrix:
9/26/2023 15:31
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 10/05/23 05:09 6200B
Surrogate: 4-Bromofluorobenzene 97.0 Limits: 70-130%10/05/23 05:091 MSA V38719
Surrogate: Dibromofluoromethane 99.6 Limits: 70-130%10/05/23 05:091 MSA V38719
Surrogate: 1,2-Dichloroethane - d4 93.0 Limits: 70-130%10/05/23 05:091 MSA V38719
Surrogate: Toluene-d8 96.8 Limits: 70-130%10/05/23 05:091 MSA V38719
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 46 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:DMW-2
96632 Matrix:
9/26/2023 15:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Benzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 10/05/23 05:34 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 10/05/23 05:34 6200BMSA
<5.00 µg/L 5.00Bromoform 1 10/05/23 05:34 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 10/05/23 05:34 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 10/05/23 05:34 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Chloroform 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 10/05/23 05:34 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 10/05/23 05:34 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 47 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:DMW-2
96632 Matrix:
9/26/2023 15:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 10/05/23 05:34 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 10/05/23 05:34 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 10/05/23 05:34 6200BMSA
<200 µg/L 200Ethanol 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 10/05/23 05:34 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 10/05/23 05:34 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 10/05/23 05:34 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 10/05/23 05:34 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 10/05/23 05:34 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 10/05/23 05:34 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 48 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:DMW-2
96632 Matrix:
9/26/2023 15:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 10/05/23 05:34 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Styrene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Toluene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 10/05/23 05:34 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 10/05/23 05:34 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 10/05/23 05:34 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 10/05/23 05:34 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 49 of 65
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-272-0023
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
Flora D'Souza
Cary
23-0307-ET Received : 09/29/2023
Triangle Texaco #2
Report Date : 10/09/2023
Sample ID :
Lab No :
Sampled:DMW-2
96632 Matrix:
9/26/2023 15:20
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 10/05/23 05:34 6200B
Surrogate: 4-Bromofluorobenzene 96.6 Limits: 70-130%10/05/23 05:341 MSA V38719
Surrogate: Dibromofluoromethane 102 Limits: 70-130%10/05/23 05:341 MSA V38719
Surrogate: 1,2-Dichloroethane - d4 95.8 Limits: 70-130%10/05/23 05:341 MSA V38719
Surrogate: Toluene-d8 96.2 Limits: 70-130%10/05/23 05:341 MSA V38719
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 50 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38719QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38718
Associated Lab Samples: 96622, 96624, 96625, 96626, 96627, 96629, 96630, 96631, 96632
LRB-V38718 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
10/05/23 02:4110.0< 10.0µg/LAcetone
10/05/23 02:410.500< 0.500µg/LBenzene
10/05/23 02:410.500< 0.500µg/LBromobenzene
10/05/23 02:411.00< 1.00µg/LBromochloromethane
10/05/23 02:410.500< 0.500µg/LBromodichloromethane
10/05/23 02:415.00< 5.00µg/LBromoform
10/05/23 02:411.00< 1.00µg/LBromomethane
10/05/23 02:410.500< 0.500µg/Ln-Butylbenzene
10/05/23 02:410.500< 0.500µg/Lsec-Butyl benzene
10/05/23 02:412.00< 2.00µg/Ltert-Butyl benzene
10/05/23 02:410.500< 0.500µg/LCarbon Tetrachloride
10/05/23 02:410.500< 0.500µg/LChlorobenzene
10/05/23 02:410.500< 0.500µg/LChlorodibromomethane
10/05/23 02:411.00< 1.00µg/LChloroethane
10/05/23 02:410.500< 0.500µg/LChloroform
10/05/23 02:410.500< 0.500µg/LChloromethane
10/05/23 02:410.500< 0.500µg/L2-Chlorotoluene
10/05/23 02:410.500< 0.500µg/L4-Chlorotoluene
10/05/23 02:412.00< 2.00µg/L1,2-Dibromo-3-Chloropropane
10/05/23 02:410.500< 0.500µg/L1,2-Dibromoethane
10/05/23 02:410.500< 0.500µg/LDibromomethane
10/05/23 02:410.500< 0.500µg/L1,2-Dichlorobenzene
10/05/23 02:410.500< 0.500µg/L1,3-Dichlorobenzene
10/05/23 02:410.500< 0.500µg/L1,4-Dichlorobenzene
10/05/23 02:415.00< 5.00µg/LDichlorodifluoromethane
10/05/23 02:410.500< 0.500µg/L1,1-Dichloroethane
10/05/23 02:410.500< 0.500µg/L1,2-Dichloroethane
Page 1 of 12Date:10/09/2023 03:17 PM
Page 51 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38719QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38718
Associated Lab Samples: 96622, 96624, 96625, 96626, 96627, 96629, 96630, 96631, 96632
LRB-V38718 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
10/05/23 02:410.500< 0.500µg/L1,1-Dichloroethene
10/05/23 02:410.500< 0.500µg/Lcis-1,2-Dichloroethene
10/05/23 02:410.500< 0.500µg/Ltrans-1,2-Dichloroethene
10/05/23 02:410.500< 0.500µg/L1,2-Dichloropropane
10/05/23 02:410.500< 0.500µg/L1,3-Dichloropropane
10/05/23 02:412.00< 2.00µg/L2,2-Dichloropropane
10/05/23 02:410.500< 0.500µg/L1,1-Dichloropropene
10/05/23 02:410.500< 0.500µg/Lcis-1,3-Dichloropropene
10/05/23 02:410.500< 0.500µg/Ltrans-1,3-Dichloropropene
10/05/23 02:41200< 200µg/LEthanol
10/05/23 02:410.500< 0.500µg/LEthylbenzene
10/05/23 02:413.00< 3.00µg/LHexachlorobutadiene
10/05/23 02:410.500< 0.500µg/LDi-Isopropyl Ether (DIPE)
10/05/23 02:410.500< 0.500µg/LIsopropylbenzene
10/05/23 02:410.500< 0.500µg/L4-Isopropyl toluene
10/05/23 02:411.00< 1.00µg/L2-Hexanone
10/05/23 02:415.00< 5.00µg/LMethyl Ethyl Ketone (MEK)
10/05/23 02:412.00< 2.00µg/LMethylene Chloride
10/05/23 02:411.00< 1.00µg/LMethyl tert-butyl ether (MTBE)
10/05/23 02:411.00< 1.00µg/L4-Methyl-2-Pentanone
10/05/23 02:411.00< 1.00µg/LNaphthalene
10/05/23 02:410.500< 0.500µg/Ln-Propylbenzene
10/05/23 02:410.500< 0.500µg/LStyrene
10/05/23 02:410.500< 0.500µg/L1,1,1,2-Tetrachloroethane
10/05/23 02:410.500< 0.500µg/L1,1,2,2-Tetrachloroethane
10/05/23 02:410.500< 0.500µg/LTetrachloroethene
10/05/23 02:410.500< 0.500µg/LToluene
Page 2 of 12Date:10/09/2023 03:17 PM
Page 52 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38719QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38718
Associated Lab Samples: 96622, 96624, 96625, 96626, 96627, 96629, 96630, 96631, 96632
LRB-V38718 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
10/05/23 02:410.500< 0.500µg/L1,2,3-Trichlorobenzene
10/05/23 02:410.500< 0.500µg/L1,2,4-Trichlorobenzene
10/05/23 02:410.500< 0.500µg/L1,1,1-Trichloroethane
10/05/23 02:410.500< 0.500µg/L1,1,2-Trichloroethane
10/05/23 02:410.500< 0.500µg/LTrichloroethene
10/05/23 02:410.500< 0.500µg/LTrichlorofluoromethane
10/05/23 02:410.500< 0.500µg/L1,2,3-Trichloropropane
10/05/23 02:410.500< 0.500µg/L1,2,4-Trimethylbenzene
10/05/23 02:410.500< 0.500µg/L1,3,5-Trimethylbenzene
10/05/23 02:415.00< 5.00µg/LVinyl Acetate
10/05/23 02:410.500< 0.500µg/LVinyl Chloride
10/05/23 02:411.00< 1.00µg/Lm,p-Xylene
10/05/23 02:410.500< 0.500µg/Lo-Xylene
10/05/23 02:414-Bromofluorobenzene (S)96.0 70-130
10/05/23 02:41Dibromofluoromethane (S)101 70-130
10/05/23 02:411,2-Dichloroethane - d4 (S)93.8 70-130
10/05/23 02:41Toluene-d8 (S)96.6 70-130
LCS-V38718 LCSD-V38718Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
40.0 10011044.140.0µg/LAcetone 40-160 9.7 20.0
21.5 10810721.320.0µg/LBenzene 70-130 0.9 20.0
20.4 10210120.120.0µg/LBromobenzene 70-130 1.4 20.0
21.6 10810721.320.0µg/LBromochloromethane 70-130 1.3 20.0
20.2 10110220.420.0µg/LBromodichloromethane 70-130 0.9 20.0
Page 3 of 12Date:10/09/2023 03:17 PM
Page 53 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38719QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38718
LCS-V38718 LCSD-V38718Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
18.7 93.598.519.720.0µg/LBromoform 70-130 5.2 20.0
27.9 14012825.520.0µg/LBromomethane 60-140 8.9 20.0
21.1 10610621.120.0µg/Ln-Butylbenzene 70-130 0.0 20.0
21.1 10610120.220.0µg/Lsec-Butyl benzene 70-130 4.3 20.0
20.7 10499.019.820.0µg/Ltert-Butyl benzene 70-130 4.4 20.0
22.3 11211122.120.0µg/LCarbon Tetrachloride 70-130 0.9 20.0
20.9 10510320.620.0µg/LChlorobenzene 70-130 1.4 20.0
19.7 98.510320.520.0µg/LChlorodibromomethane 70-130 3.9 20.0
21.3 10799.519.920.0µg/LChloroethane 60-140 6.7 20.0
20.7 10410320.520.0µg/LChloroform 70-130 0.9 20.0
19.8 99.095.019.020.0µg/LChloromethane 60-140 4.1 20.0
20.8 10410120.120.0µg/L2-Chlorotoluene 70-130 3.4 20.0
21.0 10510320.520.0µg/L4-Chlorotoluene 70-130 2.4 20.0
19.4 97.010520.920.0µg/L1,2-Dibromo-3-Chloropropane 70-130 7.4 20.0
20.4 10210721.420.0µg/L1,2-Dibromoethane 70-130 4.7 20.0
19.8 99.010420.820.0µg/LDibromomethane 70-130 4.9 20.0
21.0 10510521.020.0µg/L1,2-Dichlorobenzene 70-130 0.0 20.0
20.7 10410420.720.0µg/L1,3-Dichlorobenzene 70-130 0.0 20.0
20.9 10510120.220.0µg/L1,4-Dichlorobenzene 70-130 3.4 20.0
17.6 88.085.017.020.0µg/LDichlorodifluoromethane 60-140 3.4 20.0
21.1 10610521.020.0µg/L1,1-Dichloroethane 70-130 0.4 20.0
19.3 96.599.519.920.0µg/L1,2-Dichloroethane 70-130 3.0 20.0
20.9 10510420.820.0µg/L1,1-Dichloroethene 70-130 0.4 20.0
20.6 10310420.720.0µg/Lcis-1,2-Dichloroethene 70-130 0.4 20.0
20.7 10410320.620.0µg/Ltrans-1,2-Dichloroethene 70-130 0.4 20.0
20.7 10410420.820.0µg/L1,2-Dichloropropane 70-130 0.4 20.0
Page 4 of 12Date:10/09/2023 03:17 PM
Page 54 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38719QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38718
LCS-V38718 LCSD-V38718Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.2 10110520.920.0µg/L1,3-Dichloropropane 70-130 3.4 20.0
18.0 90.093.018.620.0µg/L2,2-Dichloropropane 70-130 3.2 20.0
22.8 11411222.420.0µg/L1,1-Dichloropropene 70-130 1.7 20.0
19.5 97.599.519.920.0µg/Lcis-1,3-Dichloropropene 70-130 2.0 20.0
19.4 97.010220.320.0µg/Ltrans-1,3-Dichloropropene 70-130 4.5 20.0
496 99.2103515500µg/LEthanol 60-140 3.7 20.0
20.8 10410120.120.0µg/LEthylbenzene 70-130 3.4 20.0
20.1 10199.019.820.0µg/LHexachlorobutadiene 70-130 1.5 20.0
20.0 10010220.420.0µg/LDi-Isopropyl Ether (DIPE)70-130 1.9 20.0
21.4 10710320.620.0µg/LIsopropylbenzene 70-130 3.8 20.0
20.9 10510120.220.0µg/L4-Isopropyl toluene 70-130 3.4 20.0
17.0 85.093.518.720.0µg/L2-Hexanone 60-140 9.5 20.0
17.1 85.597.519.520.0µg/LMethyl Ethyl Ketone (MEK)60-140 13.1 20.0
19.4 97.096.019.220.0µg/LMethylene Chloride 70-130 1.0 20.0
20.5 10310921.720.0µg/LMethyl tert-butyl ether (MTBE)70-130 5.6 20.0
18.9 94.510220.320.0µg/L4-Methyl-2-Pentanone 60-140 7.1 20.0
22.0 11012825.520.0µg/LNaphthalene 70-130 14.7 20.0
21.7 10910420.720.0µg/Ln-Propylbenzene 70-130 4.7 20.0
20.8 10410320.620.0µg/LStyrene 70-130 0.9 20.0
21.0 10510621.120.0µg/L1,1,1,2-Tetrachloroethane 70-130 0.4 20.0
18.7 93.599.519.920.0µg/L1,1,2,2-Tetrachloroethane 70-130 6.2 20.0
21.1 10610020.020.0µg/LTetrachloroethene 70-130 5.3 20.0
21.3 10710721.320.0µg/LToluene 70-130 0.0 20.0
22.0 110136*27.120.0µg/L1,2,3-Trichlorobenzene 70-130 20.7*20.0
21.5 10811623.120.0µg/L1,2,4-Trichlorobenzene 70-130 7.1 20.0
21.0 10510521.020.0µg/L1,1,1-Trichloroethane 70-130 0.0 20.0
Page 5 of 12* QC Fail Date:10/09/2023 03:17 PM
Page 55 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38719QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38718
LCS-V38718 LCSD-V38718Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.3 10210821.520.0µg/L1,1,2-Trichloroethane 70-130 5.7 20.0
22.6 11311322.620.0µg/LTrichloroethene 70-130 0.0 20.0
23.2 11611322.520.0µg/LTrichlorofluoromethane 60-140 3.0 20.0
18.9 94.510220.320.0µg/L1,2,3-Trichloropropane 70-130 7.1 20.0
20.7 10410120.220.0µg/L1,2,4-Trimethylbenzene 70-130 2.4 20.0
21.1 10610220.320.0µg/L1,3,5-Trimethylbenzene 70-130 3.8 20.0
17.7 88.584.516.920.0µg/LVinyl Acetate 60-140 4.6 20.0
20.9 10510120.220.0µg/LVinyl Chloride 60-140 3.4 20.0
43.2 10810642.540.0µg/Lm,p-Xylene 70-130 1.6 20.0
20.3 10210020.020.0µg/Lo-Xylene 70-130 1.4 20.0
95.895.84-Bromofluorobenzene (S)70-130
99.4101Dibromofluoromethane (S)70-130
93.699.01,2-Dichloroethane - d4 (S)70-130
98.096.8Toluene-d8 (S)70-130
Page 6 of 12Date:10/09/2023 03:17 PM
Page 56 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38781QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38780
Associated Lab Samples: 96623, 96628
LRB-V38780 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
10/05/23 16:4310.0< 10.0µg/LAcetone
10/05/23 16:430.500< 0.500µg/LBenzene
10/05/23 16:430.500< 0.500µg/LBromobenzene
10/05/23 16:431.00< 1.00µg/LBromochloromethane
10/05/23 16:430.500< 0.500µg/LBromodichloromethane
10/05/23 16:435.00< 5.00µg/LBromoform
10/05/23 16:431.00< 1.00µg/LBromomethane
10/05/23 16:430.500< 0.500µg/Ln-Butylbenzene
10/05/23 16:430.500< 0.500µg/Lsec-Butyl benzene
10/05/23 16:432.00< 2.00µg/Ltert-Butyl benzene
10/05/23 16:430.500< 0.500µg/LCarbon Tetrachloride
10/05/23 16:430.500< 0.500µg/LChlorobenzene
10/05/23 16:430.500< 0.500µg/LChlorodibromomethane
10/05/23 16:431.00< 1.00µg/LChloroethane
10/05/23 16:430.500< 0.500µg/LChloroform
10/05/23 16:430.500< 0.500µg/LChloromethane
10/05/23 16:430.500< 0.500µg/L2-Chlorotoluene
10/05/23 16:430.500< 0.500µg/L4-Chlorotoluene
10/05/23 16:432.00< 2.00µg/L1,2-Dibromo-3-Chloropropane
10/05/23 16:430.500< 0.500µg/L1,2-Dibromoethane
10/05/23 16:430.500< 0.500µg/LDibromomethane
10/05/23 16:430.500< 0.500µg/L1,2-Dichlorobenzene
10/05/23 16:430.500< 0.500µg/L1,3-Dichlorobenzene
10/05/23 16:430.500< 0.500µg/L1,4-Dichlorobenzene
10/05/23 16:435.00< 5.00µg/LDichlorodifluoromethane
10/05/23 16:430.500< 0.500µg/L1,1-Dichloroethane
10/05/23 16:430.500< 0.500µg/L1,2-Dichloroethane
Page 7 of 12Date:10/09/2023 03:17 PM
Page 57 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38781QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38780
Associated Lab Samples: 96623, 96628
LRB-V38780 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
10/05/23 16:430.500< 0.500µg/L1,1-Dichloroethene
10/05/23 16:430.500< 0.500µg/Lcis-1,2-Dichloroethene
10/05/23 16:430.500< 0.500µg/Ltrans-1,2-Dichloroethene
10/05/23 16:430.500< 0.500µg/L1,2-Dichloropropane
10/05/23 16:430.500< 0.500µg/L1,3-Dichloropropane
10/05/23 16:432.00< 2.00µg/L2,2-Dichloropropane
10/05/23 16:430.500< 0.500µg/L1,1-Dichloropropene
10/05/23 16:430.500< 0.500µg/Lcis-1,3-Dichloropropene
10/05/23 16:430.500< 0.500µg/Ltrans-1,3-Dichloropropene
10/05/23 16:43200< 200µg/LEthanol
10/05/23 16:430.500< 0.500µg/LEthylbenzene
10/05/23 16:433.00< 3.00µg/LHexachlorobutadiene
10/05/23 16:430.500< 0.500µg/LDi-Isopropyl Ether (DIPE)
10/05/23 16:430.500< 0.500µg/LIsopropylbenzene
10/05/23 16:430.500< 0.500µg/L4-Isopropyl toluene
10/05/23 16:431.00< 1.00µg/L2-Hexanone
10/05/23 16:435.00< 5.00µg/LMethyl Ethyl Ketone (MEK)
10/05/23 16:432.00< 2.00µg/LMethylene Chloride
10/05/23 16:431.00< 1.00µg/LMethyl tert-butyl ether (MTBE)
10/05/23 16:431.00< 1.00µg/L4-Methyl-2-Pentanone
10/05/23 16:431.00< 1.00µg/LNaphthalene
10/05/23 16:430.500< 0.500µg/Ln-Propylbenzene
10/05/23 16:430.500< 0.500µg/LStyrene
10/05/23 16:430.500< 0.500µg/L1,1,1,2-Tetrachloroethane
10/05/23 16:430.500< 0.500µg/L1,1,2,2-Tetrachloroethane
10/05/23 16:430.500< 0.500µg/LTetrachloroethene
10/05/23 16:430.500< 0.500µg/LToluene
Page 8 of 12Date:10/09/2023 03:17 PM
Page 58 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38781QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38780
Associated Lab Samples: 96623, 96628
LRB-V38780 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
10/05/23 16:430.500< 0.500µg/L1,2,3-Trichlorobenzene
10/05/23 16:430.500< 0.500µg/L1,2,4-Trichlorobenzene
10/05/23 16:430.500< 0.500µg/L1,1,1-Trichloroethane
10/05/23 16:430.500< 0.500µg/L1,1,2-Trichloroethane
10/05/23 16:430.500< 0.500µg/LTrichloroethene
10/05/23 16:430.500< 0.500µg/LTrichlorofluoromethane
10/05/23 16:430.500< 0.500µg/L1,2,3-Trichloropropane
10/05/23 16:430.500< 0.500µg/L1,2,4-Trimethylbenzene
10/05/23 16:430.500< 0.500µg/L1,3,5-Trimethylbenzene
10/05/23 16:435.00< 5.00µg/LVinyl Acetate
10/05/23 16:430.500< 0.500µg/LVinyl Chloride
10/05/23 16:431.00< 1.00µg/Lm,p-Xylene
10/05/23 16:430.500< 0.500µg/Lo-Xylene
10/05/23 16:434-Bromofluorobenzene (S)105 70-130
10/05/23 16:43Dibromofluoromethane (S)96.2 70-130
10/05/23 16:431,2-Dichloroethane - d4 (S)88.6 70-130
10/05/23 16:43Toluene-d8 (S)99.4 70-130
LCS-V38780 LCSD-V38780Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
63.2 15815963.540.0µg/LAcetone 40-160 0.4 20.0
21.5 10810821.620.0µg/LBenzene 70-130 0.4 20.0
22.0 11010921.820.0µg/LBromobenzene 70-130 0.9 20.0
21.2 10610621.120.0µg/LBromochloromethane 70-130 0.4 20.0
21.1 10610621.220.0µg/LBromodichloromethane 70-130 0.4 20.0
Page 9 of 12Date:10/09/2023 03:17 PM
Page 59 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38781QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38780
LCS-V38780 LCSD-V38780Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
17.8 89.088.517.720.0µg/LBromoform 70-130 0.5 20.0
28.8 144*13226.320.0µg/LBromomethane 60-140 9.0 20.0
22.3 11211122.220.0µg/Ln-Butylbenzene 70-130 0.4 20.0
22.0 11011122.120.0µg/Lsec-Butyl benzene 70-130 0.4 20.0
22.6 11311522.920.0µg/Ltert-Butyl benzene 70-130 1.3 20.0
20.3 10297.519.520.0µg/LCarbon Tetrachloride 70-130 4.0 20.0
21.7 10910921.820.0µg/LChlorobenzene 70-130 0.4 20.0
20.8 10410220.320.0µg/LChlorodibromomethane 70-130 2.4 20.0
19.8 99.090.518.120.0µg/LChloroethane 60-140 8.9 20.0
21.0 10510320.620.0µg/LChloroform 70-130 1.9 20.0
22.4 11210420.720.0µg/LChloromethane 60-140 7.8 20.0
22.2 11111322.620.0µg/L2-Chlorotoluene 70-130 1.7 20.0
21.9 11011222.320.0µg/L4-Chlorotoluene 70-130 1.8 20.0
18.5 92.596.519.320.0µg/L1,2-Dibromo-3-Chloropropane 70-130 4.2 20.0
20.4 10210521.020.0µg/L1,2-Dibromoethane 70-130 2.8 20.0
19.8 99.099.019.820.0µg/LDibromomethane 70-130 0.0 20.0
21.8 10911322.520.0µg/L1,2-Dichlorobenzene 70-130 3.1 20.0
22.1 11111322.520.0µg/L1,3-Dichlorobenzene 70-130 1.7 20.0
21.2 10610821.520.0µg/L1,4-Dichlorobenzene 70-130 1.4 20.0
17.8 89.083.516.720.0µg/LDichlorodifluoromethane 60-140 6.3 20.0
22.2 11111022.020.0µg/L1,1-Dichloroethane 70-130 0.9 20.0
19.2 96.097.519.520.0µg/L1,2-Dichloroethane 70-130 1.5 20.0
21.7 10910420.820.0µg/L1,1-Dichloroethene 70-130 4.2 20.0
21.4 10710721.420.0µg/Lcis-1,2-Dichloroethene 70-130 0.0 20.0
21.8 10910821.520.0µg/Ltrans-1,2-Dichloroethene 70-130 1.3 20.0
22.3 11211021.920.0µg/L1,2-Dichloropropane 70-130 1.8 20.0
Page 10 of 12* QC Fail Date:10/09/2023 03:17 PM
Page 60 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38781QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38780
LCS-V38780 LCSD-V38780Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
20.4 10210621.120.0µg/L1,3-Dichloropropane 70-130 3.3 20.0
21.9 11010621.220.0µg/L2,2-Dichloropropane 70-130 3.2 20.0
22.8 11411122.120.0µg/L1,1-Dichloropropene 70-130 3.1 20.0
20.9 10510420.720.0µg/Lcis-1,3-Dichloropropene 70-130 0.9 20.0
19.8 99.099.019.820.0µg/Ltrans-1,3-Dichloropropene 70-130 0.0 20.0
484 96.894.8474500µg/LEthanol 60-140 2.0 20.0
20.8 10410520.920.0µg/LEthylbenzene 70-130 0.4 20.0
23.7 11911623.120.0µg/LHexachlorobutadiene 70-130 2.5 20.0
20.8 10410520.920.0µg/LDi-Isopropyl Ether (DIPE)70-130 0.4 20.0
23.4 11711723.320.0µg/LIsopropylbenzene 70-130 0.4 20.0
22.7 11411422.820.0µg/L4-Isopropyl toluene 70-130 0.4 20.0
22.5 11310821.620.0µg/L2-Hexanone 60-140 4.0 20.0
22.8 11411923.820.0µg/LMethyl Ethyl Ketone (MEK)60-140 4.2 20.0
21.2 10610621.120.0µg/LMethylene Chloride 70-130 0.4 20.0
20.3 10210120.220.0µg/LMethyl tert-butyl ether (MTBE)70-130 0.4 20.0
18.5 92.594.018.820.0µg/L4-Methyl-2-Pentanone 60-140 1.6 20.0
19.0 95.095.519.120.0µg/LNaphthalene 70-130 0.5 20.0
22.0 11011022.020.0µg/Ln-Propylbenzene 70-130 0.0 20.0
21.3 10710621.220.0µg/LStyrene 70-130 0.4 20.0
21.8 10911122.120.0µg/L1,1,1,2-Tetrachloroethane 70-130 1.3 20.0
21.8 10910721.420.0µg/L1,1,2,2-Tetrachloroethane 70-130 1.8 20.0
22.9 11511522.920.0µg/LTetrachloroethene 70-130 0.0 20.0
21.0 10510520.920.0µg/LToluene 70-130 0.4 20.0
22.6 11311222.320.0µg/L1,2,3-Trichlorobenzene 70-130 1.3 20.0
20.2 10110120.120.0µg/L1,2,4-Trichlorobenzene 70-130 0.4 20.0
20.9 10510521.020.0µg/L1,1,1-Trichloroethane 70-130 0.4 20.0
Page 11 of 12Date:10/09/2023 03:17 PM
Page 61 of 65
Quality Control Data
23-272-0023Report No:
Project Description:
Client ID:Withers & Ravenel
Triangle Texaco #2
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V38781QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V38780
LCS-V38780 LCSD-V38780Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
21.6 10810621.120.0µg/L1,1,2-Trichloroethane 70-130 2.3 20.0
22.4 11211021.920.0µg/LTrichloroethene 70-130 2.2 20.0
20.9 10597.519.520.0µg/LTrichlorofluoromethane 60-140 6.9 20.0
19.5 97.599.019.820.0µg/L1,2,3-Trichloropropane 70-130 1.5 20.0
22.5 11311422.720.0µg/L1,2,4-Trimethylbenzene 70-130 0.8 20.0
23.2 11611823.520.0µg/L1,3,5-Trimethylbenzene 70-130 1.2 20.0
21.8 10910821.620.0µg/LVinyl Acetate 60-140 0.9 20.0
21.6 10810420.820.0µg/LVinyl Chloride 60-140 3.7 20.0
43.9 11010943.740.0µg/Lm,p-Xylene 70-130 0.4 20.0
21.6 10810921.720.0µg/Lo-Xylene 70-130 0.4 20.0
1001014-Bromofluorobenzene (S)70-130
95.494.2Dibromofluoromethane (S)70-130
91.091.41,2-Dichloroethane - d4 (S)70-130
100101Toluene-d8 (S)70-130
Page 12 of 12Date:10/09/2023 03:17 PM
Page 62 of 65
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:23-272-0023
Withers & Ravenel
01221
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:IRT15 1.8C
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:Angelo Norvell Date & Time:09/29/2023 15:40:41
Special precautions or instructions included?
Comments:
Page 63 of 65
Page 64 of 65
Page 65 of 65

APPENDIX B
FIELD NOTES & PHOTOGRAPHIC RECORD

PHOTO 1 View of current business (Gearheads Automotive) located on the site.

PHOTO 2
View of MW-1

PHOTO 3 View of MW-1A
PHOTO 4 View of MW-2 and MW-6

PHOTO 5 View of MW-3A
PHOTO 6 View of MW-8

PHOTO 7 View of MW-10
PHOTO 8 View of MW-12

PHOTO 9 View of MW-14
PHOTO 10 View of DMW-1

PHOTO 11 View of DMW-2

PHOTO 12 View of kudzu covered area of MW-11 and MW-20.

PHOTO 13 View of kudzu covered area of MW-7, MW-13, MW-16, and MW-17.

APPENDIX C
GENERAL STANDARD OPERATING PROCEDURES

Generalized Standard Operating Procedures (Not All Inclusive)

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

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

Generalized Standard Operating Procedures (Not All Inclusive)

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

Generalized Standard Operating Procedures (Not All Inclusive)

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

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

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