MO-5429_18876_CA_MRP_20230606

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

GROUNDWATER MONITORING & FATE AND
TRANSPORT MODELING REPORT

Tomberlin Grocery
NCDEQ Incident # 18876
UST #: MO-5429
8722 Old Ferry Road
Monroe, Union County, North Carolina
WithersRavenel Project No. 23-0307-FG

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
June 6, 2023

WithersRavenel
Our People. Your Success.
115 MacKenan Drive | Cary, NC 27511
t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F-1479
Asheville | Cary | Charlotte | Greensboro | Lumberton | Pittsboro | Raleigh | Southern Pines | Wilmington
June 6, 2023
State of North Carolina Department of Environmental Quality Federal & State Lead Program Division of Waste Management-Underground Storage Tank Section 1646 Mail Service Center
Raleigh, North Carolina 27699-1646 Attn: Ms. Sharon Ghiold Re: Groundwater Monitoring & Fate and Transport Modeling Report Tomberlin Grocery 8722 Old Ferry Road Monroe, Union County, North Carolina Groundwater Incident Number: 18876
UST Number: MO-5429 Site Rank: H390D WR Project Number: 23-0307-FG
Ms. Ghiold:
WithersRavenel, Inc. (WR) has completed this Groundwater Monitoring & Fate and Transport
Modeling Report to document the completion of groundwater sampling activities, aquifer testing, and predictive modeling completed at the Tomberlin Grocery site. Activities described in this report were completed in association with our proposal, numbered TA-01, for the above referenced site, approved by the Federal & State Lead Program on April 6, 2023. The enclosed report summarizes results of the recently completed 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
David C. Vail, E.I. Elizabeth A. Allyn, P.G.
Environmental Scientist II Environmental Project Geologist II

WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
i
TABLE OF CONTENTS

SECTION A. SITE INFORMATION ..................................................................................................................... 1
SECTION B. EXECUTIVE SUMMARY ................................................................................................................ 3
SECTION C. SITE HISTORY AND CHARACTERIZATION ............................................................................ 6
SECTION D. SITE GEOLOGY AND HYDROLOGY ...................................................................................... 10
SECTION E. GROUNDWATER SAMPLING – MAY 2023 ......................................................................... 10
SECTION F. AQUIFER TESTING AND PREDICTIVE MODELING – MAY 2023 ................................. 12
SECTION G. CONCLUSIONS AND RECOMMENDATIONS .................................................................... 16

FIGURES
Figure 1 General Location Map
Figure 2 Site Map
Figure 3 Potential Receptor Map
Figure 4 Groundwater Elevation Contour Map – May 2023
Figure 5 Groundwater Analytical Results Map – May 2023
Figure 6 Dissolved Benzene & MTBE Isoconcentration Map – May 2023
TABLES
Table B-1 Site History: UST/AST System & Other Release Information
Table B-4 Summary of Groundwater Analytical Results
Table B-5A Public & Private Water Supply Well Information
Table B-5C Adjacent Property Information
Table B-7 Monitoring Well Construction Information and Liquid Level Data
APPENDICES
Appendix A Field Notes & Photographic Record
Appendix B Laboratory Analytical Report and Chain-of-Custody
Appendix C Aquifer Testing & Predictive Modeling Forms
Appendix D General Standard Operating Procedures

WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
1
SECTION A. SITE INFORMATION
1. Site Identification
Date of Report: June 6, 2023
Facility I.D.: 00-0-0000009350
Incident No.: 18876
UST No.: MO-5429
Site Risk: High
Site Rank: H390D
Land Use Category: Residential
Site Name: Tomberlin Grocery
Site Location: 8722 Old Ferry Road
Nearest City/Town: Monroe
County: Union
Description of Geographical Data Point: Center of Source Area
Location Method: Google Earth
Latitude: 35.152172°
Longitude: -80.482010°
2. Contact Information
UST Owner: Fletcher Oil Company (Dissolved)
Address: 508 Crow Street, Monroe, NC 28111
Phone: [phone]

Property Owner: Old Ferry Road, LLC
Address: 9320 Indian Trail Fairview, Indian Trail, NC 28079
Phone: [phone]

Property Occupant: Vacant
Address: 8722 Old Ferry Road, Monroe, NC 28110
Phone: Not Applicable

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]

WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
3
SECTION B. EXECUTIVE SUMMARY
1. Summary of Activities Associated with Current TA
WithersRavenel, Inc. (WR) conducted an aquifer testing and groundwater sampling event at the Tomberlin Grocery site located at 8722 Old Ferry Road in Monroe, Union County, North Carolina in association with TA-01 under North Carolina Department of Environmental Quality (NCDEQ)
Contract #N70522-C. Figure 1 depicts the site location. The scope of work for this project included performing aquifer testing on monitoring wells MW-3, MW-5, MW-7, and MW-8 and conducting predictive modeling for the site as well as sampling existing monitoring wells MW-2R,
MW-3, MW-4, MW-5, MW-7, MW-8, MW-9, and MW-13R. Additionally, WR was tasked with obtaining an access agreement for sampling water supply well SW-3. Due to current site conditions, WR was unable to locate, purge, and sample monitoring well MW-9 even with the use of historical site maps, a metal detector, probe rod, and a shovel. WR did not
receive an access agreement for sampling SW-3 prior to the site visit, so WR attempted to obtain access while on-site. The owners of the well refused access for sampling their well. 2. Soil, Groundwater and LNAPL Assessment Information

Soils No soil samples were obtained in association with the monitoring activities conducted by WR during the May 2023 event. During March 1998 underground storage tank (UST) closure activities, soil samples were collected below the USTs. Samples contained total petroleum hydrocarbons gasoline range organics (TPH GRO) levels as high as 6,200 milligram per kilogram
(mg/kg). An additional release occurred at the site due to a vehicle striking the dispenser island. Soil sampling along the product lines from the UST basin to the dispenser island detected TPH GRO at concentrations as high as 20,000 mg/kg. In July 2003 soil samples were collected from southwest of the UST basin, dispenser island, and store. Naphthalene was detected at concentrations exceeding the soil-to-groundwater maximum soil contaminant concentrations
(MSCCs). A June 2017 soil sample collected between the dispenser island and front of the store contained C9-C18 Aliphatics at 40 mg/kg and C9 to C22 Aromatics at 47 mg/kg.
Groundwater WR collected groundwater samples from site monitoring wells MW-2R, MW-3, MW-4, MW-5, MW-7, MW-8, and MW-13R on May 17, 2023. The collected groundwater samples were
submitted for laboratory analysis of VOCs by SM6200B.
Laboratory analytical results revealed the following:
• None of the concentrations exceeded the Gross Contamination Levels (GCLs).
• Monitoring wells MW-5, MW-8, and MW-13R all exhibited at least one targeted compound at a concentration exceeding the North Carolina Groundwater Quality Standards (NC 2L Standards).
• Monitoring well MW-4 contained one targeted compound above the laboratory Method
Quantitation Limits (MQLs) but below the 2L Standards.
• Monitoring wells MW-2R, MW-3, and MW-7 and the field blank did not contain targeted compounds at concentrations exceeding the laboratory’s MQLs.
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
4
Light Non-Aqueous Phase Liquid Light non-aqueous phase liquid (LNAPL) was not detected in the site monitoring wells during this sampling event. LNAPL has historically been detected in MW-2 as recently as September 2007 and in MW-5 as recently as August 2022.
3. Receptor Information A receptor survey was completed by Harmon Environmental, PA on June 14, 2017 and documented in the July 7, 2017 Limited Site Assessment Report. The report determined that
municipal water is not available to the site or surrounding area. Harmon Environmental identified 14 water supply wells located within a 1,500-ft radius of the site. Of the 14 water supply wells identified, only 4 are located within 1,000-ft of the release. The closest water supply well is SW-3, located 550 feet southeast of the source area. No surface water bodies were identified within 500 feet of the source 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:

• March 1998: Resolve Environmental Services, P.A. excavated and removed three USTs from the site. The closure report indicates that petroleum-impacted soil were not removed
from the UST basin at this time.
• May 2008: Harmon Environmental, P.A. removed piping associated with the former 250-gallon diesel AST and approximately 19.32 tons of impacted soils.
• July 2022: Terracon Consultants, Inc. performed an 8-hour aggressive fluid and vapor
recovery (AFVR) event to remove LNAPL from MW-5. Based on currently available information, WR is unaware of additional remedial actions that have been performed at the site.
5. Slug Testing / Contaminant Fate & Transport Modeling Results of aquifer slug testing of select wells indicated hydraulic conductivity (K) values that are considered to be representative of the range that would be expected for the weathered Piedmont rock typical of the Monroe, NC area. Therefore, the geometric mean of the four derived K values
(0.34 ft/day or 1.2 x 10-4 cm/sec) was used in predictive modeling. A hydraulic gradient of 0.05 ft/ft was determined from water table elevations measured in site monitoring wells on May 16, 2023, and an effective porosity of 0.30 was assumed. The mean K value, the hydraulic gradient and assumed effective porosity value were used to determine the groundwater flow rate in the contaminant fate and transport modeling efforts.
Completion of contaminant fate & transport modeling based on slug test data and use of BIOSCREEN predictive modeling software showed the following:
o The 1st Order Decay scenario for benzene and methyl-tert butyl ether (MTBE) in groundwater after 30 years and 100 years are both reasonably close to currently observed concentrations with respect to distance from the source area. The
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
5
calculated benzene and MTBE concentrations at a distance 550 feet from the source area for both modeled timeframes are less than 1.0 ug/L. The 1st Order Decay simulations imply that a condition of steady state may exist at the site. This makes intuitive sense given the limited extent of benzene and MTBE in site
groundwater, and because the original contaminant source (the UST system, AST system, and contaminated soils associated with the AST system) have been removed from the site. This implies that the residual concentrations of the contaminants are being lowered by natural attenuation processes, including dilution, dispersion and aerobic biodegradation over time.
o Modeling results for the “No Degradation” and “Instantaneous Reaction” scenarios are overly conservative and are not representative of current site conditions. The results of the 1st Order Decay modeling scenarios are more consistent with observed site conditions, which are more representative of a site where the primary source of groundwater contamination has been removed, and natural attenuation
processes are occurring. The 1st Order Decay scenario results imply that a condition of steady state may exist, where contaminant removal by natural processes does not allow further lateral movement of the contaminants within groundwater.
6. Recommendations Based on the results of assessment and monitoring activities conducted at the site in association with this TA, WR recommends the following:
• Continue groundwater monitoring at the site for three more quarterly sampling events (for a total of four) to ensure there are no targeted compounds present at concentrations exceeding the GCLs and that LNAPL does not return to MW-5.
• Consider closing the site after placing a Notice of Residual Petroleum (NORP) on the site
property based on General Statute G.S.143-215.94V (b) regarding determination of whether a nearby well is likely to be affected by a release and the completed modeling where the contaminants of concern at the site are not expected to impact SW-3 (an active potable well located approximately 550 feet cross-gradient from the site) at concentrations
exceeding the 2L Standard or the US EPA MCL if contaminant levels stay below the GCLs
and LNAPL is not detected during the next two sampling events.
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
6
SECTION C. SITE HISTORY AND CHARACTERIZATION The following information summarizes the site history and characterization.
1. UST& AST Information The Tomberlin Grocery Store is located at 8722 Old Ferry Road in Monroe, Union County, North Carolina. A General Location Map is provided as Figure 1. The site formerly operated as a convenience store and gas station. Three registered USTs including one 1,000-gallon gasoline
UST and two 550-gallon gasoline USTs were identified to exist at the site. The three USTs were removed in March 1998. Figure 2 shows the location of the historical UST system.
Four ASTs including one 1,000-gallon gasoline AST, one 500-gallon gasoline AST, one 250-gallon diesel AST, and one 100-gallon kerosene AST were utilized at the site as well.
Additional historical UST and AST information is provided in Table B-1.

2. Description of Release/General Assessment History The following summary of the assessment history is based on WR’s review of historical files for the subject incident including:
• Permanent Closure of Three Underground Storage Tanks (April 17, 1998) by Resolve Environmental Services, P.A. (Resolve).
Resolve excavated and removed one 1,000-gallon gasoline UST, and two 550-gallon gasoline USTs. Soil contamination was confirmed as a result of a release from UST-1 and UST-2 on the west side of the building. Soil samples were analyzed for TPH GRO. The soil sample collected
from 6-ft below ground surface (BGS) contained TPH GRO at 6,200 mg/kg and the sample from UST-2 collected from 8-ft BGS contained TPH GRO at 980 mg/kg. Contaminated soil was not removed from the UST basins.

• February 2000 Semi-Annual Groundwater Monitoring Results (February 18, 2000) by Resolve.
Resolve sampled MW-1, SW-1, SW-2, and SW-3 on January 19, 2000. Analytical results for MW-1, SW-2, and SW-3 reported that all targeted compounds were below the laboratory detection limits (BDL). SW-1 contained benzene at 1.5 micrograms per liter (ug/L). The well was resampled on February 3, 2000. Analytical results for the re-sampled SW-1 reported a concentration of 3.8 ug/L.

• May 2000 Monitoring Report (June 8, 2000) by Resolve.
Resolve collected one soil sample from the dispenser island area with a hand auger at a depth of 1-ft BGS on May 9, 2000. Analytical results for this sample (SB-1) contained TPH compounds with a distillation range similar to gasoline at a concentration of 20,000 mg/kg.
This contamination is the result of a car crash that hit the pump island and triggered a release.
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
7
Resolve also sampled MW-1, SW-1, SW-2, and SW-3. All targeted compounds were BDL for MW-1, SW-2, and SW-3. Supply well SW-1 contained benzene at 1.2 ug/L.
• Groundwater and Soil Sampling Results (August 30, 2000) by Resolve.
Resolve collected two soil samples from the underground piping that runs from the dispenser
island to the former UST basins west of the building with a hand auger at a depth of 1 to 2-ft BGS on August 22, 2000. Analytical results for these samples did not contain TPH GRO at concentrations above laboratory detection limits. Resolve also installed MW-2 and MW-3 and sampled MW-1, MW-2, MW-3, and SW-1. MW-1 contained benzene at 1.6 ug/L, MW-2 contained toluene at 1.2 ug/L, MW-3 contained lead at 21 ug/L, and SW-1 contained benzene
at 2.9 ug/L.

• April 2021 Groundwater Sampling Event (July 10, 2001) by Resolve.
Resolve installed a deep monitoring well (MW-1D) and sampled MW-1, MW-1D, and MW-3. MW-2 was not sampled as it contained LNAPL at a thickness of 3-inches. MW-1 and MW-1D
did not contain targeted compounds above the 2L Standards. MW-3 contained benzene at 1.3 ug/L. Supply wells SW-1, SW-2, and SW-3 were sampled as well. Compounds were not identified above the laboratory detection limits in the three water supply wells.

• Monitoring Report (April 29, 2003) by Resolve.
Resolve sampled MW-1, MW-1D, MW-2, and MW-3 as well as supply wells SW-1, SW-2, SW-3, and SW-4. Samples collected from MW-1 and MW-1D (also called MW-1A) were BDL. Samples collected from MW-3 contained benzene at 3.6 ug/L and ethylbenzene at 1.1 ug/L. MW-2 contained various petroleum compounds that exceeded the 2L Standard. Compounds were not identified above the laboratory detection limits in the four water supply wells.

• Comprehensive Site Assessment (September 17, 2003) by Resolve.
Resolve summarized the historical petroleum compounds that have been detected in soil samples at the site. Numerous compounds exceeded the soil-to-groundwater MSCCs, but not
the residential MSCCs. Resolve also installed MW-2A and MW-4 as well as advanced 19 soil
borings around the dispenser island and the UST basins located southwest of the store. Analytical results for soil sampling indicated that minor soil contamination remains at the site, but most compounds were found to be at concentrations below the soil-to-groundwater MSCCs. Resolve also sampled MW-2A and MW-4. Both wells were BDL for all targeted compounds.

• Pre-CAP Subsequent Groundwater Monitoring Report (May 10, 2007) by Resolve.
Resolve intended to sample Type II monitoring wells (MW-1 through MW-4) and two Type III monitoring wells (MW-1A and MW-2A) on February 24, 2007. LNAPL was present at 0.01-feet on MW-2 and the well was not sampled. MW-3 and MW-4 contained compounds
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
8
exceeding the 2L Standard. No GCL violations occurred. Resolve recommended an AFVR event to remove LNAPL and elevated concentrations from MW-2.

• Groundwater Sampling Data (October 10, 2007) by Resolve.
Resolve installed and sampled monitoring wells MW-7, MW-8, and MW-9. Monitoring wells MW-7 and MW-9 contained benzene at concentrations exceeding the 2L Standard but below the GCL. Monitoring well MW-8 contained benzene, isopropyl ether, MTBE, naphthalene, toluene, and total xylenes at concentrations excefeding the 2L Standard, but below the GCL.

• Pre-CAP Subsequent Groundwater Monitoring Report (July 28, 2009) by Resolve.
Resolve sampled 14 monitoring wells associated with this incident on June 1, 2009. Analytical results of the sampling determined that MW-2, MW-3, MW-4, MW-8, and MW-9 contained targeted compounds at concentrations exceeding the 2L Standard but not the GCL. Monitoring
well MW-5 was found to contain 0.08-ft of LNAPL during the sampling event. In May 2008,
abatement activities were completed for incident 91035 when 19.32 tons of petroleum impacted soil were excavated in the vicinity of the former sub-grade diesel piping.

• Limited Site Assessment Report (July 7, 2017) by Harmon Environmental, PA (Harmon).
Harmon collected a soil sample during the installation of MW-13 (inadvertently named MW-
12 at the time of installation) and collected a groundwater sample in June 2017. MW-12 had previously been installed on the northeast adjacent property, across Brief Road. The monitoring well referenced in the LSA was installed at the northeast end of the former dispenser island (later identified as MW-13). Numerous targeted compounds were detected at
concentrations exceeding the 2L Standard.

• State-Lead Monitoring Report (July 2, 2019) by S&ME, Inc. (S&ME).
S&ME was tasked with collecting samples from monitoring wells MW-2, MW-2A, MW-3, MW-4, MW-5, MW-7, MW-8, MW-9, and MW-13 as well as sampling supply wells SW-1 and SW-
2. S&ME was unable to locate MW-2, MW-2A, and MW-9. MW-3 contained an obstruction
and MW-5 contained LNAPL. Total compound concentrations decreased in the samples collected in May 2019 from MW-3, MW-4, MW-7, MW-8, and MW-13 when compared to previously collected samples. MW-5 contained LNAPL at a thickness of 0.12-ft. SW-1 and SW-2 contained several targeted compounds at concentrations below the 2L Standard. S&ME recommended performing absorbent sock maintenance on MW-5 on a monthly basis to
remove LNAPL.

• Initial Monitoring Report (May 12, 2021) by Terracon Consultants, Inc. (Terracon).
Terracon mobilized to the site in March 2021 to collect groundwater samples from MW-1,
MW-2, MW-2A, MW-4, MW-5, MW-7, MW-8, and MW-13. Upon arrival, it was noted the
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
9
Tomberlin Grocery store building had been demolished and removed from the property. Terracon was unable to locate MW-1, MW-2, MW-2A, and MW-13. LNAPL was measured at 0.06-ft in MW-5. Terracon recommended replacing MW-2, MW-13, and adding an additional monitoring well down-gradient of MW-5. Targeted petroleum compounds were detected in
all on-site monitoring wells. MW-8 was reported to be the only monitoring well to contain targeted compounds at concentrations that exceeded the 2L Standard. No GCL violations were reported.

• Monitoring Report (June 3, 2022) by Terracon Consultants, Inc. (Terracon).
Terracon mobilized to the site in April 2022 to oversee the installation of MW-2R, MW-13R, and MW-14 as well as collect groundwater samples from monitoring wells MW-2R, MW-4, MW-5, MW-13R, and MW-14. MW-5 contained LNAPL at a thickness of 0.01-ft. MW-7 and MW-8 were not sampled due to site conditions. Benzene was detected at concentrations exceeding the 2L Standard in MW-2R and MW-13R. MTBE, naphthalene, 1,2,4-
trimethylbenzene, and xylenes were detected at concentrations exceeding the 2L Standard in MW-13R.

• Monitoring Report (September 16, 2022) by Terracon Consultants, Inc. (Terracon).
Terracon mobilized to the site in July 2022 to oversee an 8-hour AFVR event to remove LNAPL
and contaminated groundwater from MW-5. In August 2022, Terracon returned to sample site monitoring wells MW-3, MW-5, MW-8, MW-13R, and MW-14. Monitoring well MW-3 was not located. A LNAPL sheen was reported to remain in MW-5 after the AFVR event (0.14-ft of LNAPL were present prior to the AFVR event). Analytical results indicated that MW-5, MW-8, and MW-13R contained several targeted compounds above the 2L Standard. Monitoring
well MW-14 did not contain targeted compounds at concentrations above the laboratory detection limits. No GCL violations were reported.

3. Brief Description of Site Characteristics
The property is located in a rural residential and agricultural area of Monroe, Union County, North
Carolina (Figure 1). The property cleared of all structures and is over-grown along Old Ferry Road and used for agricultural purposes in the central portion (see Figure 2). The Union County Geographic Information System (GIS) website identifies the subject property as parcel number 08087003C. Photographs of site conditions observed during the May 2023 sampling event are included in Appendix A.
4. Information on Receptors/Potential Receptors
A receptor survey was completed by Harmon on June 14, 2017 and documented in the July 7, 2017 Limited Site Assessment Report. The report determined that municipal water is not available
to the site or surrounding area. Harmon identified 14 water supply wells located within a 1,500-ft radius of the site. Of the 14 water supply wells identified, only 4 are located within 1,000-ft of the release. The closest water supply well is SW-3, located 550 feet southeast of the source area.
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
10
No surface water bodies were identified within 500 feet of the source area. Water supply wells located within 1,500 feet of the source area are depicted on Figure 3. Information regarding these water supply wells is included on Table B-5A.
Examination of the U.S. Geological Survey 7.5-minute series topographic map of Stanfield, North Carolina Quadrangle, the site is located approximately 550 feet above mean sea level with a slight southeasterly slope towards a ravine (Figure 1).
SECTION D. SITE GEOLOGY AND HYDROLOGY
According the 1985 Geologic Map of North Carolina, the site is mapped within the metamorphic rocks of the Floyd Church Formation in the Carolina Slate Belt. This formation dates to the Late Proterozoic-Cambrian Period. The metamorphic rocks in this formation are described as “thin to
thick bedded; bedding plane and axial-planar cleavage common; interbedded with metasandstone, metaconglomerate, and metavolcanic rock.”
According to the United States Department of Agricultural (USDA) Natural Resources Conservation Service (NRCS) Web Soil Survey, the source area is underlain by Badin channery silt loam (2 to 8 percent slopes). These soils are described as well drained with a medium runoff
classification. The parent material is residuum weathered from metasedimentary rock and/or metavolcanics. Based on boring logs and well construction records at the site, the area is underlain by shallow weathered siltstone (as shallow as 1-2-ft BGS) and transitions to competent bedrock at depths between 6-8-ft BGS.
SECTION E. GROUNDWATER SAMPLING – MAY 2023
On May 17, 2023, WR personnel mobilized to the subject property to perform groundwater sampling activities at the facility in association with TA-01 under NCDEQ Contract # N70522-C. The scope of work for this project included the gauging, purging, and sampling of monitoring wells
MW-2R, MW-3, MW-4, MW-5, MW-7, MW-8, MW-9, and MW-13R. Additionally, WR was tasked with obtaining an access agreement for sampling water supply well SW-3. Due to current site conditions, WR was unable to locate, purge, and sample monitoring well MW-9 even with the use of historical site maps, a metal detector, probe rod, and a shovel. WR did not
receive an access agreement for sampling SW-3 prior to the site visit, so WR attempted to obtain access while on-site. The owners of the well refused access for sampling their well. The following paragraphs describe the sampling activities and associated laboratory analytical results.
Groundwater Sampling Activities
Prior to the purging and sampling of site monitoring wells as described below, WR personnel gauged the wells with an electronic oil-water interface meter to determine the depth to LNAPL and groundwater at each well location. During the performance of these activities, LNAPL was
not identified in the monitoring wells.
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
11
The depth to groundwater measurements in the monitoring wells across the site ranged from 20.25 feet below the top of casing (ft-BTOC) in monitoring well MW-4 to 25.00 ft-BTOC in monitoring well MW-7. Based on groundwater elevation measurements on May 17, 2023, the direction of groundwater flow is generally towards the southeast with a slight east northeast
component in the southern area of the monitoring well network. Groundwater flow as determined based on these measurements is shown on Figure 4. Groundwater elevation measurements for this event are presented in Table B-7. Field notes are included in Appendix A.
Following gauging of all monitoring wells associated with this TA, monitoring MW-2R, MW-3, MW-4, MW-5, MW-7, and MW-8 were purged and sampled with separate, disposable
polyethylene (PE) bailers. Samples from the wells were decanted into pre-preserved laboratory provided sample containers and stored on ice in a dedicated sample cooler. Samples collected from site monitoring wells were submitted to Waypoint Analytical, Inc. under proper chain of custody procedures for testing by Standard Method (SM) 6200B.
Laboratory Results
Analytical results for groundwater samples obtained from site monitoring wells on May 17, 2023 indicated that one or more VOCs were reported at concentrations exceeding the 2L Standards in samples from monitoring wells MW-2R, MW-3, MW-4, MW-5, MW-7, MW-8, and MW-13R.
Laboratory analytical results revealed the following:
• None of the concentrations exceeded the GCLs.
• Monitoring wells MW-5, MW-8, and MW-13R all exhibited at least one targeted
compound at a concentration exceeding the 2L Standards.
• Monitoring well MW-4 contained one targeted compound above the laboratory MQLs but below the 2L Standards.
• Monitoring wells MW-2R, MW-3, and MW-7 did not contain targeted compounds at
concentrations exceeding the laboratory’s MQLs.
• The Field Blank sample did not contain targeted compounds at concentrations exceeding the laboratory’s MQLs.

Groundwater analytical results are summarized in Table B-4 and shown on Figure 5. A dissolved benzene and MTBE isoconcentrations map is shown on Figure 6. Copies of the laboratory analytical report and chain-of-custody are included in Appendix B. WR’s generalized standard operating procedures are provided in Appendix D.

WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
12
SECTION F. AQUIFER TESTING AND PREDICTIVE MODELING – MAY 2023
1. Aquifer Testing
In association with TA-01, WR completed water level recovery testing on monitoring wells MW-
3, MW-5, MW-7, and MW-8 to determine estimates of aquifer hydraulic conductivity. These data were utilized in predictive modeling of contaminant movement within groundwater over time. WR performed the water level recovery tests on May 17, 2023. Test data were recorded using a LevelTroll 700 pressure transducer and a Rugged Reader tablet. The recovery tests were
conducted by removing a 4.5-ft solid slug from the monitoring well being tested, and then measuring the subsequent rate of water level recovery using the LevelTroll pressure transducer. The recorded water level recovery measurements and well construction dimensions were used to calculate an estimate of aquifer hydraulic conductivity according to the method of Bouwer, 1989. The calculated hydraulic conductivity (K) values are summarized in the table below: Results of Aquifer Slug Testing
Well ID Test Type K (ft/day) K (cm/sec) MW-3 Recovery 0.36 1.3 x 10-4
MW-5 (a) Recovery 3.3 1.2 x 10-3
MW-7 Recovery 0.054 1.9 x 10-5 MW-8 Recovery 0.21 7.3 x 10-5
* MW-5(a) was a re-test for MW-5 as it was suspected that there was an error during the initial MW-5 test. The derived K values are considered to be representative of the range of hydraulic conductivities for the weathered Piedmont rock typical of the Monroe, NC area. Therefore, the geometric mean
of the four derived K values (0.34 ft/day or 1.2 x 10-4 cm/sec) was used in predictive modeling, as described in the following section. A hydraulic gradient of 0.05 ft/ft was determined from water table elevations measured in site monitoring wells on May 16, 2023. Results of the slug testing are included in Appendix C.
2. Contaminant Fate & Transport Modeling
WR used EPA’s BIOSCREEN® Natural Attenuation Decision Support System Model (Air Force
Center for Environmental Excellence) to simulate steady state migration and natural attenuation
of the dissolved phase hydrocarbons in the surficial aquifer using the Domenico analytical solute
transport model. This model considers advection, dispersion, absorption, aerobic decay, and
anaerobic reactions that result in the natural biodegradation of petroleum compounds over
specified times.
Contaminants of Concern:
Benzene and MTBE are the two petroleum-related VOCs that are currently present at the highest
concentrations in groundwater near the source area at the site, which occurs in the vicinity of
monitoring well MW-5. Lower concentrations of benzene and MTBE were detected in wells
further from the source area (See Table B-4). Benzene and MTBE have organic carbon partitioning
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
13
coefficients that are an order of magnitude lower than the other main petroleum-related VOCs
(ethylbenzene, toluene and xylene). Therefore, the movement of benzene and MTBE in
groundwater are less attenuated in the subsurface than the other primary petroleum-related
VOCs.
For the purpose of contaminant fate and transport modeling at the site, WR used the recently
detected concentrations of benzene and MTBE in the sample from MW-5, and the presumed
absence of detectable petroleum constituents in the nearest off-site well, which is located
approximately 550 feet to the southwest. The length of the model simulation was therefore set
to 550 feet, which includes the distance to the nearest private well (SW-3). The model calculated
anticipated concentrations of benzene and MTBE along this flow path at times 30 years and 100
years from the present.
It is noteworthy that the lateral extent of benzene and MTBE in site groundwater (see Figure 6)
currently extends less than 75 feet from the source area near MW-5. This implies that natural
groundwater flow rates are relatively low, and that natural attenuation processes have and are
limiting the lateral migration of benzene and MTBE within groundwater.
Representative Concentrations:
Wells and analytical concentrations utilized in the model include:

• Monitoring Well: MW-5 (May 17, 2023)
o Benzene – 4.42 mg/L
o MTBE – 2.73 mg/L
• Private Supply Well: SW-3
o Benzene – <0.001 mg/L (assumed)
o MTBE - <0.001 mg/L (assumed) The May 2023 benzene and MTBE concentrations detected in the sample from MW-5 were used
to establish source area concentrations within the BIOSCREEN® model. For the purpose of the
fate and transport model, WR assumed an infinite source of sorbed contaminants, considered to be a conservative or more extreme than expected modeling approach.
Model Receptor Locations:
The nearest potential receptor is the private water supply well SW-3 located about 550 feet to
the southwest of the source area near MW-5. Therefore, the model runs consider a travel distance of 550 feet from MW-5. Site-Specific Groundwater Parameters:
Groundwater parameters used in the model are based on field measurements, default values
obtained from the BIOSCREEN® manual and observed soil lithology at the site.
• A hydraulic gradient of 0.05 ft/ft was derived from the water table elevation data for site
monitoring wells measured on May 16, 2023.
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
14
• Hydraulic conductivity (K) is the geometric mean value derived from the recovery tests conducted at MW-3, MW-5, MW-7 and MW-8 on May 16, 2023:

o 0.34 ft/day or 1.2 x 10-4 cm/sec.
• A porosity value of 30%, commonly associated with silty sandy sediments and sedimentary
rock was used.
• Plume dimensions used in calculating dispersivity values are based on the May 2023 analytical results.
• Soil parameters including bulk density (1.7 kg/L) fraction of organic carbon (0.001) and organic
carbon partitioning coefficient (Koc) for benzene were based on default values referenced in the BIOSCREEN user manual. The Koc for MTBE was obtained from on-line sources. The following Koc values were used:
o Benzene – 38 L/kg
o MTBE – 17 L/kg
• The values used for instantaneous reaction parameters including nitrate, iron, and sulfate
concentrations were the lowest values cited in the BIOSCREEN user manual (zero mg/L for
each parameter). The average dissolved oxygen field reading (2.0 mg/L) obtained at the time of sampling perimeter monitoring wells was used for the oxygen concentration input.
• An average half-life for benzene and MTBE of 2 years was assumed from the range of half-
lives presented in the BIOSCREEN manual, and the current distribution of these VOCs in site
groundwater. 3. Model Results
The BIOSCREEN software was used to simulate (1) transport with no degradation, (2) transport
with “instantaneous” biodegradation reaction, and (3) dispersion with 1st-order decay, each over
a 30-year and 100-year duration. It should be noted that the source area impacts were
conservatively considered to be infinite, meaning that representative source area contaminant
concentrations do not decrease with time. In addition, BIOSCREEN uses simplified groundwater
flow conditions and assumes the aquifer and flow field are homogenous and isotropic and that
vertical flow gradients do not affect contaminant transport.

• No Degradation:
• Predicted concentrations of benzene and MTBE greatly exceed their respective 2L Standard at a distance 550 feet from the source area within both of the modeled timeframes. Under these conditions, concentrations of benzene at a distance 550 feet from the source area are calculated to be about 600 ug/L after 30 years and almost 2,000
ug/L after 100 years. Similarly, MTBE concentrations at a distance 550 feet from the
source area are calculated to be 715 ug/L after 30 years and 1,230 ug/L after 100 years However, benzene and MTBE concentrations have been observed to be close to their respective 2L Standards at distances less than 75 feet from the source area according to recent monitoring data. If No Degradation/constant source conditions existed, we would
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
15
expect to see much higher concentrations of benzene and MTBE at a distance 75 feet from the source, however that is not the case. Therefore, the constant source “No Degradation” scenario is not representative of conditions at the site. • Instantaneous Reaction: • Predicted concentrations of benzene and MTBE in groundwater greatly exceed their 2L
Standards at a distance 550 feet from the source area within both modeled timeframes
under the Instantaneous Reaction scenario. Please note, however, that the lowest values cited in the BIOSCREEN manual (zero mg/L) were used for the Instantaneous Reaction scenario due to a lack of actual values. This makes the output for this scenario very similar to the No Degradation scenario primarily because constant source conditions apply.
Therefore, the “Instantaneous Reaction” scenario does not appear to be representative of
conditions at the site either. 1st Order Decay:
• The graphs of predicted contaminant concentration versus time for the 1st Order Decay scenarios for benzene and MTBE in groundwater after 30 years and 100 years are reasonably close to currently observed concentrations with respect to distance from the
source area. The calculated benzene and MTBE concentrations at a distance 550 feet from
the source area for both modeled timeframes are less than 1.0 ug/L. The 1st Order Decay simulations imply that a condition of steady state may exist at the site. This makes intuitive sense given the limited extent of benzene and MTBE in site groundwater, and because the original contaminant source (the UST system, AST system, and contaminated soils
associated with the AST system) have been removed from the site. This implies that the
residual concentrations of the contaminants are being lowered by natural attenuation processes, including dilution, dispersion and aerobic biodegradation over time. In summary, the modeling results for the “No Degradation” and “Instantaneous Reaction” scenarios
are overly conservative and are not representative of current site conditions. The results of the
1st Order Decay scenarios are more consistent with observed site conditions, which are more representative of a site where the primary source of groundwater contamination has been removed, and natural attenuation processes are occurring. The 1st Order Decay scenario results imply that a condition of steady state may exist, where contaminant removal by natural processes
does not allow further lateral movement of the contaminants within groundwater. Results of the
BIOSCREEN predictive modeling are included in Appendix C.

WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
16
SECTION G. CONCLUSIONS AND RECOMMENDATIONS This report documents the results of field activities conducted at the site for TA-01, which included
gauging, purging and sampling monitoring wells MW-2R, MW-3, MW-4, MW-5, MW-7, MW-8, MW-9, and MW-13R, as well as performing aquifer testing on MW-3, MW-5, MW-7, and MW-8, and modeling contaminant fate and transportation in groundwater at the site. Additionally, WR was tasked with obtaining an access agreement for sampling water supply well SW-3.
Conclusions based on observations, analytical data and research relating to the release at the site combined with historical information include the following:
• The site is currently an undeveloped parcel of land.
• Four water supply wells were previously identified within 1,000 feet of the site. Municipal water is not available to the site or surrounding area.
• The owner of SW-3 refused to grant WR access to sample the well.
• Monitoring wells MW-2R, MW-3, MW-4, MW-5, MW-7, and MW-8 were located, gauged, purged and sampled.
• Monitoring well MW-9 was not able to be located while on site, even with the use of
historical site maps and photos, a metal detector, and shovel.
• LNAPL was not identified at the site during this monitoring event. LNAPL was most recently detected in MW-5 on August 11, 2022 at a thickness of 0.01-ft and previously at
a thickness of 0.14-ft on July 13, 2022.
• Monitoring wells MW-5, MW-8, and MW-13R all exhibited at least one targeted compound at a concentration exceeding the 2L Standards.
• Monitoring well MW-4 contained one targeted compound above the laboratory MQLs but
below the 2L Standards.
• Monitoring wells MW-2R, MW-3, and MW-7 and the field blank did not contain targeted compounds at concentrations exceeding the laboratory’s MQLs.
• The groundwater elevation data indicated a southeasterly groundwater flow direction with a slight east northeast component in the southern portion of the monitoring well network.
• Predictive modeling of the dissolved phase benzene plume revealed the following:
o The 1st Order Decay scenario for benzene and MTBE in groundwater after 30 years
and 100 years are both reasonably close to currently observed concentrations with respect to distance from the source area. The calculated benzene and MTBE concentrations at a distance 550 feet from the source area for both modeled timeframes are less than 1.0 ug/L. The 1st Order Decay simulations imply that a
condition of steady state may exist at the site. This makes intuitive sense given the
limited extent of benzene and MTBE in site groundwater, and because the original contaminant source (the UST system, AST system, and contaminated soils associated with the AST system) have been removed from the site. This implies that the residual concentrations of the contaminants are being lowered by natural
attenuation processes, including dilution, dispersion and aerobic biodegradation
over time.
o Modeling results for the “No Degradation” and “Instantaneous Reaction” scenarios are overly conservative and are not representative of current site conditions. The results of the 1st Order Decay modeling scenarios are more consistent with
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023
17
observed site conditions, which are more representative of a site where the primary source of groundwater contamination has been removed, and natural attenuation processes are occurring. The 1st Order Decay scenario results imply that a condition of steady state may exist, where contaminant removal by natural
processes does not allow further lateral movement of the contaminants within groundwater. Based on the results of assessment and monitoring activities conducted at the site in association
with this TA, WR recommends the following:

• Continue groundwater monitoring at the site for three more quarterly sampling events (for
a total of four) to ensure there are no targeted compounds present at concentrations
exceeding the GCLs and that LNAPL does not return to MW-5.
• Consider closing the site after placing a Notice of Residual Petroleum (NORP) on the site property based on General Statute G.S.143-215.94V (b) regarding determination of
whether a nearby well is likely to be affected by a release and the completed modeling
where the contaminants of concern at the site are not expected to impact SW-3 (an active potable well located approximately 550 feet cross-gradient from the site) at concentrations exceeding the 2L Standard or the US EPA MCL if contaminant levels stay below the GCLs and LNAPL is not detected during the next two sampling events.
WithersRavenel
Our People. Your Success.

FIGURES
© 2023 Microsoft Corporation © 2023 TomTom
DCV
EAA
DRAWN BY:
05/24/2023 23-0307-FG
1
SCALE:FIGURE NO.:
PROJECT NO.:DATE:APPROVED BY:
TOMBERLIN GROCERY TF#18876
8722 OLD FERRY ROAD
MONROE, UNION COUNTY, NC
GENERAL LOCATION MAP
1"=2000 '
GRAPHIC SCALE
1 inch = 2000 ft.
0 20001000 4000
WithersRavenel
Engineers | Planners | Surveyors
115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479
www.withersravenel.com
SUBJECT SITE
± 2.81 ACRES
J:\23\0307-FG-Tomberline Grocery-18876\Enviro\CAD\TF18876 - Tomberlin Grocery.dwg- June 5, 2023 - DVAIL
© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS
MW-12
MW-11
MW-7
MW-10
FORMER
TOMBERLIN
GROCERY
BUILDING
FORMER
DISPENSER
ISLAND
FORMER
UST
LOCATION
FORMER
UST
LOCATION
MW-1
(DESTROYED)
MW-6
MW-1A
(DESTROYED)MW-2A
(DESTROYED
)
OLD F
E
R
R
Y
R
O
A
D
EAST BRIE
F

R
O
A
D
MW-14
MW-9
(DESTROYED)
FORMER
UST
LOCATION
FORMER
SHED
LOCATION
MW-8
MW-5
MW-13
R
MW-2R
MW-4
MW-3 DCVEAADRAWN BY:05/24/202323-0307-FG2SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:SITE MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comJ:\23\0307-FG-Tomberline Grocery-18876\Enviro\CAD\TF18876 - Tomberlin Grocery.dwg- June 5, 2023 - DVAIL1"=30 'GRAPHIC SCALE
1 inch = 30 ft.
3015 600
LEGEND
TYPE II MONITORING WELL LOCATION
DEEP SCREENED MONITORING WELL LOCATION
NOTES:
1.) AERIAL OBTAINED MICROSOFT CORPORATION VIA AUTOCAD CIVIL 3D.TOMBERLIN GROCERYTF#188768722 OLD FERRY ROADMONROE, UNION COUNTY, NC
© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS
© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS
006
001
002
003
004
005
1
2
3
4
OLD F
E
R
R
Y
R
O
A
D
EAS
T
BR
IE
F
ROAD
500-FT
RADIUS
1,000-FT
RADIUS
1,500-FT
RADIUS
J:\23\0307-FG-Tomberline Grocery-18876\Enviro\CAD\TF18876 - Tomberlin Grocery.dwg- June 5, 2023 - DVAIL1"=300 'GRAPHIC SCALE
1 inch = 300 ft.
300150 6000 DCVEAADRAWN BY:05/24/202323-0307-FG3SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:POTENTIAL RECEPTORMAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comLEGEND
APPROXIMATE SOURCE LOCATION
ADJACENT PROPERTY IDENTIFIER (SEE TABLE B-5C)
WATER SUPPLY WELL LOCATION
NOTES:
1.) AERIAL OBTAINED MICROSOFT CORPORATION VIA AUTOCAD CIVIL 3D.TOMBERLIN GROCERYTF#188768722 OLD FERRY ROADMONROE, UNION COUNTY, NC#
001
© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS
MW-12
MW-11
MW-7
MW-10
FORMER
UST
LOCATION
FORMER
UST
LOCATION
MW-6
OLD F
E
R
R
Y
R
O
A
D
EAST BRIE
F

R
O
A
D
MW-14
FORMER
UST
LOCATION (79.84)(79.43)
(82.90)
(79.45)
(79.43)
(82.73)
(79.50)
(NM)
(NM)
(NM)
(NM)
(NM)82.5082.0081.5081.0080.5080.0079.50MW-8
MW-5
MW-13
R
MW-2R
MW-4
MW-3 J:\23\0307-FG-Tomberline Grocery-18876\Enviro\CAD\TF18876 - Tomberlin Grocery.dwg- June 5, 2023 - DVAIL1"=30 'GRAPHIC SCALE
1 inch = 30 ft.
3015 600 DCVEAADRAWN BY:05/24/202323-0307-FG4SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:GROUNDWATERELEVATION CONTOURMAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comLEGEND
GROUNDWATER ELEVATION (FT)
GROUNDWATER ELEVATION CONTOUR (FT)
DASHED WHERE INFERRED
GROUNDWATER FLOW DIRECTION
TYPE II MONITORING WELL LOCATION
DEEP SCREENED MONITORING WELL LOCATION
NOTES:
1.) AERIAL OBTAINED MICROSOFT CORPORATION VIA AUTOCAD CIVIL 3D.
2.) MW-7 AND MW-8 NOT USED FOR CONSTRUCTION OF CONTOURS
AS GROUNDWATER LEVELS WERE OUTSIDE OF SCREENED INTERVALS.TOMBERLIN GROCERYTF#188768722 OLD FERRY ROADMONROE, UNION COUNTY, NC(76.36)
© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS
MW-12
MW-11
MW-7
MW-10
FORMER
TOMBERLIN
GROCERY
BUILDING
FORMER
DISPENSER
ISLAND
FORMER
UST
LOCATION
FORMER
UST
LOCATION
MW-1
(DESTROYED)
MW-6
MW-1A
(DESTROYED)MW-2A
(DESTROYED
)
OLD F
E
R
R
Y
R
O
A
D
EAST BRIE
F

R
O
A
D
MW-14
MW-9
(DESTROYED)
FORMER
UST
LOCATION
FORMER
SHED
LOCATION
MW-8
MW-5
MW-13
R
MW-2R
MW-4
MW-3 J:\23\0307-FG-Tomberline Grocery-18876\Enviro\CAD\TF18876 - Tomberlin Grocery.dwg- June 5, 2023 - DVAIL1"=30 'GRAPHIC SCALE
1 inch = 30 ft.
3015 600 DCVEAADRAWN BY:05/31/202323-0307-FG5SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:GROUNDWATERANALYTICAL RESULTSMAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comLEGEND
TYPE II MONITORING WELL LOCATION
DEEP SCREENED MONITORING WELL LOCATION
NOTES:
1.) AERIAL OBTAINED MICROSOFT CORPORATION VIA AUTOCAD CIVIL 3D.TOMBERLIN GROCERYTF#188768722 OLD FERRY ROADMONROE, UNION COUNTY, NC
© 2023 Microsoft Corporation © 2023 Maxar ©CNES (2023) Distribution Airbus DS
MW-12
MW-11
MW-7
MW-10
FORMER
TOMBERLIN
GROCERY
BUILDING
FORMER
DISPENSER
ISLAND
MW-1
(DESTROYED)
MW-6
MW-1A
(DESTROYED)MW-2A
(DESTROYED
)
MW-14
MW-9
(DESTROYED)
FORMER
SHED
LOCATION(<0.500)
(<0.500)
(<0.500)
(4,420)
(<0.500)
(2.47)
(291)
(1.92)
(<1.0)
(2,730)
(<1.0)
(5.46)(<1.0)
(229)
MW-8
MW-5
MW-13
R
MW-2R
MW-4
MW-3 J:\23\0307-FG-Tomberline Grocery-18876\Enviro\CAD\TF18876 - Tomberlin Grocery.dwg- June 5, 2023 - DVAIL1"=30 'GRAPHIC SCALE
1 inch = 30 ft.
3015 600 DCVEAADRAWN BY:05/24/202323-0307-FG6SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:DISSOLVED BENZENE & MTBEISOCONCENTRATION MAPMAY 2023WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comLEGEND
TYPE II MONITORING WELL LOCATION
DEEP SCREENED MONITORING WELL LOCATION
BENZENE CONCENTRATION (ug/L)
ESTIMATED EXTENTS OF DISSOLVED PHASE
BENZENE
MTBE CONCENTRATION (ug/L)
ESTIMATED EXTENTS OF DISSOLVED PHASE
MTBE
NOTES:
1.) AERIAL OBTAINED MICROSOFT CORPORATION VIA AUTOCAD CIVIL 3D.TOMBERLIN GROCERYTF#188768722 OLD FERRY ROADMONROE, UNION COUNTY, NC(4,420)
(2,730)
WithersRavenel
Our People. Your Success.

TABLES

UST IDNumberCurrent/LastContentsPreviousContentsCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofUSTWas release associated with UST System? (Y/N)1 Gasoline Unknown 1,000 Single Wall Steel 48" x 126" Single Wall Steel 5/5/1971 Closed 3/20/1998 Y2 Gasoline Unknown 550 Single Wall Steel 46" x 74" Single Wall Steel 5/5/1971 Closed 3/20/1998 Y3 Gasoline Unknown 550 Single Wall Steel 46" x 74" Single Wall Steel 5/5/1971 Closed 3/20/1998 YAST IDNumberCurrent/LastContentsPreviousContentsCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofASTWas release associated with AST System? (Y/N)1 Gasoline Unknown 1000 Unknown 48" x 126" Unknown 1997 (assumed) Removed Unknown2 Gasoline Unknown 500 Unknown Unknown Unknown 1997 (assumed) Removed Unknown3 Diesel Unknown 250 Unknown Unknown Single Wall Steel Unknown Removed Y4 Kerosene Unknown 100 Unknown Unknown Self Contained Unknown Removed NIncidentNumberMaterialReleasedDateofRelease18876 Gasoline 3/18/1998Description of ReleaseTable B-1Site History: UST/AST System & Other Release InformationTomberlin Grocery TF# 18876A release was discovered at the site in March 1998 following the removal of one 1,000-gallon and two 550-gallon gasoline USTs. Soil contamination was observed in the overburden, sidewalls, and floor of the UST basins to the west of the building. The basin was not overexcavated at this time and clean fill was added to the excavation where the USTs were removed. 8722 Old Ferry RoadMonroe, Union County, NCWithersRavenel Project No. 23-0307-FGPage 1 of 1
Benzene Butylbenzene, n‐Butylbenzene, sec‐ Chloroform Dibromoethane, 1,2‐ Ethylbenzene Isopropyl Ether Isopropylbenzene (Cumene) Isopropyltoluene, 4‐ MBK, Methyl Butyl Ketone (2‐Hexanone) Methyl‐tert‐Butyl Ether MIBK (4‐Methyl‐2‐pentanone) Naphthalene Propylbenzene, n‐Styrene Toluene Trichloroethylene Trimethylbenzene, 1,2,4‐ Trimethylbenzene, 1,3,5‐Xylenes, total 71‐43‐2 104‐51‐8 135‐98‐867‐66‐3106‐93‐4 100‐41‐4 108‐20‐398‐82‐899‐87‐6 591‐78‐61634‐04‐4108‐10‐191‐20‐3 103‐65‐1 100‐42‐5108‐88‐379‐01‐695‐63‐6108‐67‐8 1330‐20‐74/9/2003<1.0 NA NA NR NR <1.0 <5 NA NA NA <5 NA NA NA NA <1.0 NA NA NA <38/17/20032/24/2007<1.0 NA NA NR NR <1.0 <5 NA NA NA3.2NA <2 NA NA <1.0 NA NA NA <34/9/2003<1.0 NA NA NR NR <1.0 <5 NA NA NA <5 NA NA NA NA <1.0 NA NA NA <38/17/20032/24/2007<1.0 NA NA NR NR <1.0 <5 NA NA NA <1.0 NA <2 NA NA <1.0 NA NA NA <34/9/20032,400NA NA NR NR320 500NA NA NA100NA NA NA NA5,700NA NA NA4,2008/17/20032/24/20075/2/20198/17/2003<1.0 NA NA NR NR <1.0 <5 NA NA NA <5 NA NA NA NA <1.0 NA NA NA <32/24/2007<1.0 NA NA NR NR <1.0 <5 NA NA NA <5 NA <2 NA NA <1.0 NA NA NA <35/2/20194/25/20221.5<0.49 <0.40 NR <0.272.2<0.31 <0.33 NA NA0.45JNA 0.72J 0.38J NA1.5NA3.1 1.1 10.15/17/2023<0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5004/9/20033.6NA NA NR NR1.1<5 NA NA NA <5 NA NA NA NA <1.0 NA NA NA <38/17/20032/24/2007<1.0 NA NA NR NR <1.0 <1.0 NA NA NA3.5NA <2 NA NA <1.0 NA NA NA <35/2/20198/11/20225/17/2023<0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5008/17/2003<1.0 NA NA NR NR <1.0 <5 NA NA NA <5 NA NA NA NA <1.0 NA NA NA <32/24/20078.7NA NA NR NR <1.04.1NA NA NA <1.0 NA <2 NA NA <1.0 NA NA NA <35/2/2019<0.50 <0.50 <0.50 NR <0.500.14 2.3<0.50 <0.50 NA2.2NA <2 <0.50 NA <0.50 NA0.99 0.29 J1.023/4/2021<0.34 <0.49 <0.40 NR <0.27 <0.30 <0.31 <0.33 NA NA <0.42 NA1.4 J<0.34 NA <0.48 NA1.5<0.33 <1.54/25/2022<0.34 <0.49 <0.40 NR <0.27 <0.300.55<0.33 NA NA0.88NA <0.64 <0.34 NA <0.48 NA <0.50 <0.33 <1.055/17/2023<0.500 <0.500 <0.500 <0.500 <0.500 <0.5001.04<0.500 <0.500 <1.001.92<1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/18/20074,600NR NR NR0.18 1,600 1500NA NR NR <500 NR610NR NA11,000NA NR NR7,7005/2/20193/4/20214/25/20227/13/20228/13/20222,430<9.8 <8.0 NR <5.4793 884 34.4NA NA358NA381 98.5<5.8325<7.71050 307 4,1195/17/20234,420 69.3<50.0 <50.0 <50.01,460 3920 70<50.0 <1002730<100979 205<50.0153<50.03100 1060 8,890MW‐6 6/18/2007<1.0 NA NA NR NR <1.0 <1.0 NA NA NA <1.0 NA <2 NA NA <1.0 NA NA NA <39/18/2007122NA NA NR NR12.7<10 NA NA NA <10 NA <20 NA NA <10 NA NA NA555/2/2019<0.50 <0.50 <0.50 NR <0.50 <0.50 <0.50 <0.50 <0.50 NA <0.50 NA <2 <0.50 NA <0.50 NA <0.50 <0.50 <1.53/4/2021<0.34 <0.49 <0.40 NR <0.27 <0.30 <0.31 <0.33 NA NA <0.42 NA <0.64 <0.34 NA <0.48 NA0.74<0.33 <1.55/17/2023<0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5009/18/20074,100NA NA NR NR577 1910NA NA NA737NA20.9NA NA3,910NA NA NA2,0205/2/20190.62<0.50 <0.50 NR <0.500.19 J15<0.50 <0.50 NA3.9NA <2 <0.50 NA0.15 JNA0.92 0.27 J0.84 J3/4/2021469<4.9 <4.0 NR <2.7261 188 9.2NA NA47.3NA67.5<3.4 NA974NA199<3.31,0388/11/2022240<0.98 <0.80 NR <0.54181 175 8.8NA NA42.6NA61.3 26.7 3.7 254 1.8 186 45.6 6905/17/20232.47<0.500 <0.500 <0.500 <0.5001.66 22<0.500 <0.500 <1.005.46<1.00 <1.00 <0.500 <0.500 <0.500 <0.5001.62<0.5004.419/18/200710.2NA NA NR NR5.6 57.8NA NA NR19.5NR <2 NA NA3.2NA NA NA10.65/2/20195/17/2023MW‐10 7/15/2008<1.0 NA NA NR NR <1.0 <1.0 NA NA NA <1.0 NA <2 NA NA <1.0 NA NA NA <3MW‐11 7/15/2008<1.0 NA NA NR NR <1.0 <1.0 NA NA NA <1.0 NA <2 NA NA <1.0 NA NA NA <3MW‐12 7/15/2008<1.0 NA NA NR NR <1.0 <1.0 NA NA NA <1.0 NA <2 NA NA <1.0 NA NA NA <36/12/20173,300NA7.6 JNR NR550 770NA6.8 20 210 28 750 63NA4,500NA2800NA11,0005/2/20191,300 11 J5.2 JNR <12340 820 13 8.8 J<120320NA170 31NA170NA490 190 1,4504/25/2022444<2.4 <2.0 NR <1.4447 96.9 19.7NA NA23.7NA185 45.2NA261NA503 144 1,7508/11/2022557<2.0 <1.6 NR <1.1157 530 10.1NA NA183NA91.2 30.2 5.2 51.7<0.38348 59.8 2705/17/2023291<50.0 <50.0 <50.0 <50.062.9 557<50.0 <50.0 <100229<100 <100 <50.0 <50.0 <50.0 <50.0195<50.0 <50.04/25/2022<0.34 <0.49 <0.40 NR <0.27 <0.300.55<0.33 NA NA0.88NA <0.64 <0.34 NA <0.48 NA <0.50 <0.33 <1.058/11/2022<0.34 <0.49 <0.40 NR <0.27 <0.30 <0.31 <0.33 NA NA <0.42 NA <0.64 <0.34 <0.29 <0.48 <0.38 <0.50 <0.33 <1.05Field Blank 5/17/2023<0.500 <0.500 <0.5001.44<0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <1.00 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5001 70 70 70 0.02 600 70 70 25 40 20 100 6 70 70 600 3 400 400 5005,000 5,900 8,800 70,000 50 80,000 70,000 30,50011,700 40,000 20,000 100,000 6,000 26,100 100,000 260,000 2,800 28,500 24,100 50,000Notes:1)2)3)4)5) NR = Not ReportedNA = Not Analyzed by Method ShownResult= Result Exceeds Laboratory Detection LimitsResult= Result Exceeds NC 2L Standard for GroundwaterResult= Result Exceeds NC Gross Contaminant Level for GroundwaterMW‐14All results provided in ug/L (micrograms per liter) or parts per billion.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.GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater.Historical Groundwater data prior to May 2023 is from other consultants. Not LocatedLNAPL ‐ 0.01'Not SampledNot SampledNot LocatedNot SampledNot LocatedMW‐7MW‐8MW‐9MW‐2RNot LocatedLNAPL ‐ 0.06'LNAPL ‐ 0.12'Not LocatedNot LocatedMonroe, Union County, NCGCLs for GroundwaterNC 2L Standard MW‐1MW‐1AMW‐2MW‐3MW‐4MW‐5MW‐13RMW‐2ANot LocatedLNAPL ‐ 0.14' Prior to AFVR EventLNAPL ‐ 0.10'MW‐13TABLE B‐4SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL RESULTSTomberlin Grocery TF# 18876WithersRavenel Project No. 23‐0307‐FG8722 Old Ferry RoadSample IDDateCollectedAnalytical MethodSM6200BPage 1 of 1
SW-12917 E. Brief Road Monroe, NC 28110Lance & Michelle Snyder616 Clontz Road Indian Trail, NC 28079Active, Potable Unknown Unknown 969 ft East Cross-GradientSW-22906 E. Brief Road Monroe, NC 28110Gregory & Jacqueline Sanders11132 Front Porch Ave. Apt 11207Charlotte, NC 28227Active, Potable Unknown Unknown 642 ft East Down-GradientSW-38712 Old Ferry RoadMonroe, NC 28110Butch & Patricia Kiker9921 Old Ferry Road Monroe, NC 28110Active, Potable Unknown Unknown 550 ft Southwest Cross-GradientSW-48704 Old Ferry Road Monroe, NC 28110Brandy Lynn Kiker53 Winter Green DriveBeaufort, SC 29906Active, Potable Unknown Unknown 724 ft Southeast Cross-Gradient1)2)Tomberlin Grocery TF# 18876PUBLIC & PRIVATE WATER SUPPLY WELL INFORMATIONTABLE B-5ANotes: Water Supply Well ownership data updated on 5/24/2023 using Union County GIS website.8722 Old Ferry RoadWithersRavenel Project No. 23-0307-FGWR has not completed a receptor survey for the site. Information in table is from previous consultants' reporting.Monroe, Union County, NCWell ID Property Address Property OwnerProperty Owner Mailing AddressWell UseWell Screen Interval(feet)Well Distance from Source Area(feet)Location Relative to Groundwater FlowWell Depth(feet)Page 1 of 1
1)W&R has not performed a receptor survey in association with the subject property and thus the information provided above has not been verified. 2)3)Not Provided 45‐ft NNW Up‐GradientNotes: Property ownership data updated on 5/24/2023 using Union County GIS website. See Figure 3 for corresponding map information.Distances shown from source area are measured from location of monitoring well MW‐5 and the nearest property boundary of the adjacent property.6Agricultural ‐ Residential2710 E Brief RoadMonroe, NC 28110Alan Griffin3206 E HWY 218Monroe, NC 281104Agricultural ‐ Residential Not Provided 295‐ft SDown‐Gradient7812 Crooked Church RoadMonroe, NC 28110Meredyth & Susan Haigler225 Red Hill LaneNew Hill, NC 275625Vacant ‐ Agricultural Not Provided 205‐ft WSW Cross‐Gradient0 Old Ferry RoadMonroe, NC 28110Butch & Patricia Kiker9921 Old Ferry Road Monroe, NC 28110Down‐Gradient3Farming ‐ Poultry Houses Not Provided 233‐ft EDown‐Gradient22917 E. Brief Road Monroe, NC 28110Residential Not Provided 250‐ft NE2906 E. Brief Road Monroe, NC 28110Lance & Michelle Snyder616 Clontz Road Indian Trail, NC 28079Gregory & Jacqueline Sanders11132 Front Porch Ave. Apt 11207Charlotte, NC 282271Vacant ‐ Agricultural Not Provided 115‐ft NNE Cross‐Gradient0 Old Ferry RoadMonroe, NC 28110Anthony Little John & Amy Griffin8919 Old Ferry RoadMonroe, NC 28110Location Relative to Groundwater FlowSITEVacant ‐ Agricultural Not Provided‐‐‐ ‐‐‐Property ID Property Address Property Owner & Address Usage ZoningDistance/Direction from Source AreaOld Ferry Road, LLC9320 Indian Trail FairviewIndian Trail, NC 280798722 Old Ferry RoadMonroe, NC 28110Monroe, Union County, NCTABLE B‐5CADJACENT PROPERTY INFORMATIONTomberlin Grocery TF# 18876WithersRavenel Project No. 23‐0307‐FG8722 Old Ferry Road
2/15/1999 17.00 NA 85.15
2/18/1999 NM NA NA
5/9/1999 16.50 NA 85.65
8/22/2000 27.54 NA 74.61
4/9/2003 20.05 NA 82.10
9/12/2003 21.87 NA 80.28
2/24/2007 21.67 NA 80.48
6/24/2007 26.58 NA 75.57
9/19/2007 NM NA NA
3/23/2009 25.12 NA 77.03
6/1/2009 23.94 NA 78.21
4/25/2001 27.01 NA 73.81
4/9/2003 19.99 NA 80.83
9/12/2003 22.46 NA 78.36
2/24/2007 22.56 NA 78.26
6/24/2007 26.65 NA 74.17
9/19/2007 33.25 NA 67.57
3/23/2009 24.87 NA 75.95
6/1/2009 25.24 NA 75.58
8/22/2000 34.10 NA 68.35
4/25/2001 24.33 0.25 78.33
4/9/2003 20.36 NA 82.09
9/12/2003 22.19 NA 80.26
2/24/2007 25.11 0.01 77.35
6/24/2007 30.34 NA 72.11
9/19/2007 34.67 0.30 68.04
3/23/2009 28.00 NA 74.45
6/1/2009 28.49 NA 73.96
5/2/2019 NM NA NA
9/12/2003 23.11 NA 79.15
2/24/2007 25.10 NA 77.16
6/24/2007 30.35 NA 71.91
9/19/2007 36.06 NA 66.20
3/23/2009 27.77 NA 74.49
6/1/2009 28.03 NA 74.23
5/2/2019 NM NA NA
4/25/2022 23.21 NA 79.33
5/16/2023 22.70 NA 79.84
8/15/2000 34.41 NA 65.59
4/25/2001 24.33 NA 75.67
4/9/2001 21.00 NA 79.00
9/12/2003 20.68 NA 79.32
2/24/2007 22.86 NA 77.14
6/24/2007 28.10 NA 71.90
9/19/2007 33.79 NA 66.21
3/23/2009 25.50 NA 74.50
6/1/2009 24.43 NA 75.57
5/2/2019 NM NA NA
5/16/2023 20.50 NA 79.50
9/12/2003 22.66 NA 80.49
2/24/2007 24.69 NA 78.46
6/24/2007 28.89 NA 74.26
9/19/2007 34.32 NA 68.83
3/23/2009 27.87 NA 75.28
6/1/2009 28.66 NA 74.49
5/2/2019 14.30 NA 88.85
3/4/2021 10.77 NA 92.38
4/25/2022 21.43 NA 81.72
5/16/2023 20.25 NA 82.90
Monroe, Union County, NC
TABLE B‐7MONITORING WELL CONSTRUCTION INFORMATION AND LIQUID LEVEL DATA
Tomberlin Grocery TF# 18876WithersRavenel Project No. 23‐0307‐FG
8722 Old Ferry Road
15‐30 102.15MW‐1 02/14/99 2 30
LNAPL Thickness
(feet)
Groundwater
Elevation          
(feet)
Screened Interval  
(feet)
Top‐of‐Casing 
Elevation      
(feet)
Date Water Level 
Measured
Depth‐to‐Water 
from 
Top‐of‐Casing
(feet)
Well ID Date Installed
Well Casing 
Diameter
(inches)
Total Depth 
(feet)
MW‐1A
102.4515‐3535208/15/00MW‐2
100.8260‐7070204/19/01
MW‐2A
100.0015‐3535208/15/00MW‐3
102.2660‐6565207/28/03
102.5418‐3838204/20/22MW‐2R
103.1520‐3535207/28/03MW‐4
Page 1 of 2
Monroe, Union County, NC
TABLE B‐7MONITORING WELL CONSTRUCTION INFORMATION AND LIQUID LEVEL DATA
Tomberlin Grocery TF# 18876WithersRavenel Project No. 23‐0307‐FG
8722 Old Ferry Road
LNAPL Thickness
(feet)
Groundwater
Elevation          
(feet)
Screened Interval  
(feet)
Top‐of‐Casing 
Elevation      
(feet)
Date Water Level 
Measured
Depth‐to‐Water 
from 
Top‐of‐Casing
(feet)
Well ID Date Installed
Well Casing 
Diameter
(inches)
Total Depth 
(feet)
6/24/2007 30.71 NA 71.91
9/19/2007 36.46 NA 66.16
3/23/2009 28.15 NA 74.47
6/1/2009 28.50 0.08 74.19
5/2/2019 23.95 0.12 78.77
3/4/2021 20.19 0.06 82.48
4/25/2022 23.13 0.10 79.58
7/13/2022 26.88 0.14 75.86
8/11/2022 26.26 0.01 76.36
5/16/2023 23.17 NA 79.45
6/24/2007 27.67 NA 71.16
9/19/2007 32.53 NA 66.30
3/23/2009 24.01 NA 74.82
6/1/2009 25.79 NA 73.04
9/19/2007 41.37 NA 66.36
3/23/2009 31.43 NA 76.30
6/1/2009 31.59 NA 76.14
5/2/2019 25.50 NA 82.23
3/4/2021 23.93 NA 83.80
4/25/2022 NM NA NM
5/16/2023 25.00 NA 82.73
9/19/2007 36.24 NA 65.89
3/23/2009 27.62 NA 74.51
6/1/2009 28.00 NA 74.13
5/2/2019 23.29 NA 78.84
3/4/2021 19.40 NA 82.73
4/25/2022 NM NA NM
8/11/2022 24.64 NA 77.49
5/16/2023 22.70 NA 79.43
9/19/2007 35.44 NA 66.18
3/23/2009 27.13 NA 74.49
6/1/2009 27.45 NA 74.17
5/16/2023
3/23/2009 32.50 NA 78.80
6/1/2009 33.83 NA 77.47
3/23/2009 31.91 NA 77.64
6/1/2009 32.40 NA 77.15
3/23/2009 22.60 NA 74.48
6/1/2009 NM NA NA
MW‐13 06/12/17 2 40 25‐40 NM 5/2/2019 24.00 NA NA
4/25/2022 23.81 NA 78.92
8/11/2022 26.28 NA 76.45
5/16/2023 23.30 NA 79.43
4/25/2022 24.45 NA 78.98
8/11/2022 27.00 NA 76.43
1)
2)3)All well casing diameters measure 2.0 inches
4)
5)
Top of casing elevations are relative to an arbirtrary site benchmark established and measured by prior consultants. 
Groundwater elevation calculated by: (Top‐of‐Casing ‐ Depth‐to‐Water) + (LNAPL Thickness x 0.8581)
NM = Not Measured
Notes: 
Well construction information was obtained from previous consultants reports.
MW‐7
98.8320‐4040206/18/07MW‐6
107.7327‐5252209/15/07
MW‐5 102.6220‐4040206/18/07
04/20/22MW‐14
102.7315‐353504/20/22MW‐13R
103.4315‐3535
2
2
MW‐12
109.5536‐5656207/08/08MW‐11
97.0820‐4040207/08/08
Not Located
MW‐8 09/15/07 2 41 102.1331‐41
07/08/08MW‐10
101.6232‐4242209/15/07MW‐9
111.3036‐56562
Page 2 of 2
WithersRavenel
Our People. Your Success.

APPENDIX A FIELD NOTES & PHOTOGRAPHIC RECORD
WithersRavenel
Our People. Your Success.
Tomberlin Grocery – NCDEQ Incident #18876 WR Project # 23-0307-FG Groundwater Monitoring & Fate and Transport Modeling Report June 2023

WithersRavenel
Our People. Your Success.
Rushing BP – NCDEQ Incident #29194 WR Project # 02172214.25 Groundwater Monitoring & Fate and Transport Modeling Report June 2022

WithersRavenel
Our People. Your Success.
Rushing BP – NCDEQ Incident #29194 WR Project # 02172214.25 Groundwater Monitoring & Fate and Transport Modeling Report June 2022
PHOTO 1 General site photograph facing south southwest
PHOTO 2 Location of monitoring well MW-2R
WithersRavenel
Our People. Your Success.
Rushing BP – NCDEQ Incident #29194 WR Project # 02172214.25 Groundwater Monitoring & Fate and Transport Modeling Report June 2022
PHOTO 3 Location of monitoring well MW-3
PHOTO 4 Additional view of location of monitoring well MW-3 (right - cone) and MW-14 (left – stick up)
WithersRavenel
Our People. Your Success.
Rushing BP – NCDEQ Incident #29194 WR Project # 02172214.25 Groundwater Monitoring & Fate and Transport Modeling Report June 2022
PHOTO 5 Location of monitoring well MW-4
PHOTO 6 Location of monitoring well MW-5
WithersRavenel
Our People. Your Success.
Rushing BP – NCDEQ Incident #29194 WR Project # 02172214.25 Groundwater Monitoring & Fate and Transport Modeling Report June 2022
PHOTO 7 Location of monitoring well MW-7 (stick up)
PHOTO 8 Location of monitoring well MW-8
WithersRavenel
Our People. Your Success.
Rushing BP – NCDEQ Incident #29194 WR Project # 02172214.25 Groundwater Monitoring & Fate and Transport Modeling Report June 2022

PHOTO 9 Location of monitoring well MW-13R
WithersRavenel
Our People. Your Success.

APPENDIX B 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.

5/26/2023
Withers & Ravenel David Vail
115 Mackenan Dr. BUILDING 117 Cary, NC, 27511
Ref: Analytical Testing
Lab Report Number: 23-139-0018 Client Project Description: Tomberlin Grocery
23-0307-FG
Dear David Vail:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 5/19/2023 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 45
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202337735State ProgramNorth Carolina
12/31/2023402State ProgramNorth Carolina
07/31/202399012State ProgramSouth Carolina
12/31/202299012State ProgramSouth Carolina
Page 1 of 1 00016/23-139-0018
Page 2 of 45
Report Number:
Sample Summary Table
Client Project Description:
23-139-0018
Tomberlin Grocery
23-0307-FG
Lab No Client Sample ID Matrix Date Collected Date Received
05/17/2023 12:15Aqueous 96592 MW-2R 05/19/2023 11:30
05/17/2023 12:00Aqueous 96593 MW-3 05/19/2023 11:30
05/17/2023 11:45Aqueous 96594 MW-4 05/19/2023 11:30
05/17/2023 11:35Aqueous 96595 MW-5 05/19/2023 11:30
05/17/2023 11:25Aqueous 96596 MW-7 05/19/2023 11:30
05/17/2023 11:15Aqueous 96597 MW-8 05/19/2023 11:30
05/17/2023 10:55Aqueous 96598 MW-13R 05/19/2023 11:30
05/17/2023 12:30Aqueous 96599 FB 05/19/2023 11:30
Page 3 of 45
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-139-0018
Report Limit
Project:Tomberlin Grocery
V 96594MW-4
1.04 05/24/2023 17:456200BDi-Isopropyl Ether (DIPE)µg/L 0.500
1.92 05/24/2023 17:456200BMethyl tert-butyl ether (MTBE)µg/L 1.00
V 96595MW-5
4420 05/24/2023 21:236200BBenzeneµg/L 50.0
69.3 05/24/2023 21:236200Bn-Butylbenzene µg/L 50.0
3920 05/24/2023 21:236200BDi-Isopropyl Ether (DIPE)µg/L 50.0
1460 05/24/2023 21:236200BEthylbenzeneµg/L 50.0
70.0 05/24/2023 21:236200BIsopropylbenzeneµg/L 50.0
2730 05/24/2023 21:236200BMethyl tert-butyl ether (MTBE)µg/L 100
979 05/24/2023 21:236200BNaphthaleneµg/L 100
205 05/24/2023 21:236200Bn-Propylbenzene µg/L 50.0
153 05/24/2023 21:236200BTolueneµg/L 50.0
3100 05/24/2023 21:236200B1,2,4-Trimethylbenzene µg/L 50.0
1060 05/24/2023 21:236200B1,3,5-Trimethylbenzene µg/L 50.0
697 05/24/2023 21:236200Bo-Xylene µg/L 50.0
8190 05/24/2023 21:236200Bm,p-Xylene µg/L 100
8890 05/24/2023 21:236200BXylene (Total)µg/L 50.0
V 96597MW-8
2.47 05/24/2023 18:336200BBenzeneµg/L 0.500
22.0 05/24/2023 18:336200BDi-Isopropyl Ether (DIPE)µg/L 0.500
1.66 05/24/2023 18:336200BEthylbenzeneµg/L 0.500
5.46 05/24/2023 18:336200BMethyl tert-butyl ether (MTBE)µg/L 1.00
1.62 05/24/2023 18:336200B1,2,4-Trimethylbenzene µg/L 0.500
1.89 05/24/2023 18:336200Bo-Xylene µg/L 0.500
2.52 05/24/2023 18:336200Bm,p-Xylene µg/L 1.00
4.41 05/24/2023 18:336200BXylene (Total)µg/L 0.500
V 96598MW-13R
291 05/24/2023 21:486200BBenzeneµg/L 50.0
557 05/24/2023 21:486200BDi-Isopropyl Ether (DIPE)µg/L 50.0
62.9 05/24/2023 21:486200BEthylbenzeneµg/L 50.0
229 05/24/2023 21:486200BMethyl tert-butyl ether (MTBE)µg/L 100
195 05/24/2023 21:486200B1,2,4-Trimethylbenzene µg/L 50.0
V 96599FB
1.44 05/24/2023 15:436200BChloroformµg/L 0.500
Page 4 of 45

Client: Withers & Ravenel CASE NARRATIVE
Project: Tomberlin Grocery Lab Report Number: 23-139-0018
Date: 5/26/2023
Volatile Organic Compounds - GC/MS Method 6200B Analyte: 1,2-Dibromo-3-chloropropane QC Batch No: V33670/V33669
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.

Page 5 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-2R
96592 Matrix:
5/17/2023 12:15
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Benzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 05/24/23 16:56 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 05/24/23 16:56 6200BMSA
<5.00 µg/L 5.00Bromoform 1 05/24/23 16:56 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 05/24/23 16:56 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 05/24/23 16:56 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Chloroform 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 05/24/23 16:56 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 05/24/23 16:56 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 6 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-2R
96592 Matrix:
5/17/2023 12:15
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 05/24/23 16:56 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 05/24/23 16:56 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 05/24/23 16:56 6200BMSA
<200 µg/L 200Ethanol 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 05/24/23 16:56 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 05/24/23 16:56 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 05/24/23 16:56 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 05/24/23 16:56 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 05/24/23 16:56 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 05/24/23 16:56 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 7 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-2R
96592 Matrix:
5/17/2023 12:15
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 05/24/23 16:56 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Styrene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Toluene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 05/24/23 16:56 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 05/24/23 16:56 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 05/24/23 16:56 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 05/24/23 16:56 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 8 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-2R
96592 Matrix:
5/17/2023 12:15
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 05/24/23 16:56 6200B
Surrogate: 4-Bromofluorobenzene 102 Limits: 70-130%05/24/23 16:561 MSA V33670
Surrogate: Dibromofluoromethane 102 Limits: 70-130%05/24/23 16:561 MSA V33670
Surrogate: 1,2-Dichloroethane - d4 109 Limits: 70-130%05/24/23 16:561 MSA V33670
Surrogate: Toluene-d8 98.0 Limits: 70-130%05/24/23 16:561 MSA V33670
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 9 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-3
96593 Matrix:
5/17/2023 12:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Benzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 05/24/23 17:20 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 05/24/23 17:20 6200BMSA
<5.00 µg/L 5.00Bromoform 1 05/24/23 17:20 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 05/24/23 17:20 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 05/24/23 17:20 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Chloroform 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 05/24/23 17:20 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 05/24/23 17:20 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 10 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-3
96593 Matrix:
5/17/2023 12:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 05/24/23 17:20 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 05/24/23 17:20 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 05/24/23 17:20 6200BMSA
<200 µg/L 200Ethanol 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 05/24/23 17:20 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 05/24/23 17:20 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 05/24/23 17:20 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 05/24/23 17:20 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 05/24/23 17:20 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 05/24/23 17:20 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 11 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-3
96593 Matrix:
5/17/2023 12:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 05/24/23 17:20 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Styrene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Toluene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 05/24/23 17:20 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 05/24/23 17:20 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 05/24/23 17:20 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 05/24/23 17:20 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 12 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-3
96593 Matrix:
5/17/2023 12:00
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 05/24/23 17:20 6200B
Surrogate: 4-Bromofluorobenzene 101 Limits: 70-130%05/24/23 17:201 MSA V33670
Surrogate: Dibromofluoromethane 101 Limits: 70-130%05/24/23 17:201 MSA V33670
Surrogate: 1,2-Dichloroethane - d4 108 Limits: 70-130%05/24/23 17:201 MSA V33670
Surrogate: Toluene-d8 99.4 Limits: 70-130%05/24/23 17:201 MSA V33670
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 13 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-4
96594 Matrix:
5/17/2023 11:45
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Benzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 05/24/23 17:45 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 05/24/23 17:45 6200BMSA
<5.00 µg/L 5.00Bromoform 1 05/24/23 17:45 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 05/24/23 17:45 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 05/24/23 17:45 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Chloroform 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 05/24/23 17:45 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 05/24/23 17:45 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 14 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-4
96594 Matrix:
5/17/2023 11:45
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 05/24/23 17:45 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 05/24/23 17:45 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 05/24/23 17:45 6200BMSA
<200 µg/L 200Ethanol 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 05/24/23 17:45 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 05/24/23 17:45 6200BMSA
1.04 µg/L 0.500Di-Isopropyl Ether (DIPE)1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 05/24/23 17:45 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 05/24/23 17:45 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 05/24/23 17:45 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 05/24/23 17:45 6200BMSA
1.92 µg/L 1.00Methyl tert-butyl ether (MTBE)1 05/24/23 17:45 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 15 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-4
96594 Matrix:
5/17/2023 11:45
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 05/24/23 17:45 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Styrene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Toluene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 05/24/23 17:45 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 05/24/23 17:45 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 05/24/23 17:45 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 05/24/23 17:45 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 16 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-4
96594 Matrix:
5/17/2023 11:45
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 05/24/23 17:45 6200B
Surrogate: 4-Bromofluorobenzene 99.8 Limits: 70-130%05/24/23 17:451 MSA V33670
Surrogate: Dibromofluoromethane 103 Limits: 70-130%05/24/23 17:451 MSA V33670
Surrogate: 1,2-Dichloroethane - d4 108 Limits: 70-130%05/24/23 17:451 MSA V33670
Surrogate: Toluene-d8 99.4 Limits: 70-130%05/24/23 17:451 MSA V33670
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 17 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-5
96595 Matrix:
5/17/2023 11:35
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1000 µg/L 1000Acetone 100 05/24/23 21:23 6200BMSA
4420 µg/L 50.0Benzene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Bromobenzene 100 05/24/23 21:23 6200BMSA
<100 µg/L 100Bromochloromethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Bromodichloromethane 100 05/24/23 21:23 6200BMSA
<500 µg/L 500Bromoform 100 05/24/23 21:23 6200BMSA
<100 µg/L 100Bromomethane 100 05/24/23 21:23 6200BMSA
69.3 µg/L 50.0n-Butylbenzene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0sec-Butyl benzene 100 05/24/23 21:23 6200BMSA
<200 µg/L 200tert-Butyl benzene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Carbon Tetrachloride 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Chlorobenzene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Chlorodibromomethane 100 05/24/23 21:23 6200BMSA
<100 µg/L 100Chloroethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Chloroform 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Chloromethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.02-Chlorotoluene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.04-Chlorotoluene 100 05/24/23 21:23 6200BMSA
<200 µg/L 2001,2-Dibromo-3-Chloropropane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,2-Dibromoethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Dibromomethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,2-Dichlorobenzene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,3-Dichlorobenzene 100 05/24/23 21:23 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 18 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-5
96595 Matrix:
5/17/2023 11:35
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.01,4-Dichlorobenzene 100 05/24/23 21:23 6200BMSA
<500 µg/L 500Dichlorodifluoromethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,2-Dichloroethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0cis-1,2-Dichloroethene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0trans-1,2-Dichloroethene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,2-Dichloropropane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,3-Dichloropropane 100 05/24/23 21:23 6200BMSA
<200 µg/L 2002,2-Dichloropropane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,1-Dichloropropene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0cis-1,3-Dichloropropene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0trans-1,3-Dichloropropene 100 05/24/23 21:23 6200BMSA
<20000 µg/L 20000Ethanol 100 05/24/23 21:23 6200BMSA
1460 µg/L 50.0Ethylbenzene 100 05/24/23 21:23 6200BMSA
<300 µg/L 300Hexachlorobutadiene 100 05/24/23 21:23 6200BMSA
3920 µg/L 50.0Di-Isopropyl Ether (DIPE)100 05/24/23 21:23 6200BMSA
70.0 µg/L 50.0Isopropylbenzene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.04-Isopropyl toluene 100 05/24/23 21:23 6200BMSA
<100 µg/L 1002-Hexanone 100 05/24/23 21:23 6200BMSA
<500 µg/L 500Methyl Ethyl Ketone (MEK)100 05/24/23 21:23 6200BMSA
<200 µg/L 200Methylene Chloride 100 05/24/23 21:23 6200BMSA
2730 µg/L 100Methyl tert-butyl ether (MTBE)100 05/24/23 21:23 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 19 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-5
96595 Matrix:
5/17/2023 11:35
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<100 µg/L 1004-Methyl-2-Pentanone 100 05/24/23 21:23 6200BMSA
979 µg/L 100Naphthalene 100 05/24/23 21:23 6200BMSA
205 µg/L 50.0n-Propylbenzene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Styrene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Tetrachloroethene 100 05/24/23 21:23 6200BMSA
153 µg/L 50.0Toluene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,2,3-Trichlorobenzene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,2,4-Trichlorobenzene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,1,1-Trichloroethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,1,2-Trichloroethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Trichloroethene 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Trichlorofluoromethane 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.01,2,3-Trichloropropane 100 05/24/23 21:23 6200BMSA
3100 µg/L 50.01,2,4-Trimethylbenzene 100 05/24/23 21:23 6200BMSA
1060 µg/L 50.01,3,5-Trimethylbenzene 100 05/24/23 21:23 6200BMSA
<500 µg/L 500Vinyl Acetate 100 05/24/23 21:23 6200BMSA
<50.0 µg/L 50.0Vinyl Chloride 100 05/24/23 21:23 6200BMSA
8190 µg/L 100m,p-Xylene 100 05/24/23 21:23 6200BMSA
697 µg/L 50.0o-Xylene 100 05/24/23 21:23 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 20 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-5
96595 Matrix:
5/17/2023 11:35
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
8890 µg/L 50.0Xylene (Total)100 05/24/23 21:23 6200B
Surrogate: 4-Bromofluorobenzene 102 Limits: 70-130%05/24/23 21:23100 MSA V33670
Surrogate: Dibromofluoromethane 99.4 Limits: 70-130%05/24/23 21:23100 MSA V33670
Surrogate: 1,2-Dichloroethane - d4 104 Limits: 70-130%05/24/23 21:23100 MSA V33670
Surrogate: Toluene-d8 98.8 Limits: 70-130%05/24/23 21:23100 MSA V33670
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 21 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-7
96596 Matrix:
5/17/2023 11:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Benzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 05/24/23 18:09 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 05/24/23 18:09 6200BMSA
<5.00 µg/L 5.00Bromoform 1 05/24/23 18:09 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 05/24/23 18:09 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 05/24/23 18:09 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Chloroform 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 05/24/23 18:09 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 05/24/23 18:09 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 22 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-7
96596 Matrix:
5/17/2023 11:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 05/24/23 18:09 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 05/24/23 18:09 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 05/24/23 18:09 6200BMSA
<200 µg/L 200Ethanol 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 05/24/23 18:09 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 05/24/23 18:09 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 05/24/23 18:09 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 05/24/23 18:09 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 05/24/23 18:09 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 05/24/23 18:09 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 23 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-7
96596 Matrix:
5/17/2023 11:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 05/24/23 18:09 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Styrene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Toluene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 05/24/23 18:09 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 05/24/23 18:09 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 05/24/23 18:09 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 05/24/23 18:09 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 24 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-7
96596 Matrix:
5/17/2023 11:25
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 05/24/23 18:09 6200B
Surrogate: 4-Bromofluorobenzene 99.4 Limits: 70-130%05/24/23 18:091 MSA V33670
Surrogate: Dibromofluoromethane 101 Limits: 70-130%05/24/23 18:091 MSA V33670
Surrogate: 1,2-Dichloroethane - d4 109 Limits: 70-130%05/24/23 18:091 MSA V33670
Surrogate: Toluene-d8 100 Limits: 70-130%05/24/23 18:091 MSA V33670
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 25 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-8
96597 Matrix:
5/17/2023 11:15
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 05/24/23 18:33 6200BMSA
2.47 µg/L 0.500Benzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 05/24/23 18:33 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 05/24/23 18:33 6200BMSA
<5.00 µg/L 5.00Bromoform 1 05/24/23 18:33 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 05/24/23 18:33 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 05/24/23 18:33 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Chloroform 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 05/24/23 18:33 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 05/24/23 18:33 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 26 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-8
96597 Matrix:
5/17/2023 11:15
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 05/24/23 18:33 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 05/24/23 18:33 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 05/24/23 18:33 6200BMSA
<200 µg/L 200Ethanol 1 05/24/23 18:33 6200BMSA
1.66 µg/L 0.500Ethylbenzene 1 05/24/23 18:33 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 05/24/23 18:33 6200BMSA
22.0 µg/L 0.500Di-Isopropyl Ether (DIPE)1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 05/24/23 18:33 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 05/24/23 18:33 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 05/24/23 18:33 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 05/24/23 18:33 6200BMSA
5.46 µg/L 1.00Methyl tert-butyl ether (MTBE)1 05/24/23 18:33 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 27 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-8
96597 Matrix:
5/17/2023 11:15
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 05/24/23 18:33 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Styrene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Toluene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 05/24/23 18:33 6200BMSA
1.62 µg/L 0.5001,2,4-Trimethylbenzene 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 05/24/23 18:33 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 05/24/23 18:33 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 05/24/23 18:33 6200BMSA
2.52 µg/L 1.00m,p-Xylene 1 05/24/23 18:33 6200BMSA
1.89 µg/L 0.500o-Xylene 1 05/24/23 18:33 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 28 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-8
96597 Matrix:
5/17/2023 11:15
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
4.41 µg/L 0.500Xylene (Total)1 05/24/23 18:33 6200B
Surrogate: 4-Bromofluorobenzene 98.6 Limits: 70-130%05/24/23 18:331 MSA V33670
Surrogate: Dibromofluoromethane 101 Limits: 70-130%05/24/23 18:331 MSA V33670
Surrogate: 1,2-Dichloroethane - d4 107 Limits: 70-130%05/24/23 18:331 MSA V33670
Surrogate: Toluene-d8 100 Limits: 70-130%05/24/23 18:331 MSA V33670
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 29 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-13R
96598 Matrix:
5/17/2023 10:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1000 µg/L 1000Acetone 100 05/24/23 21:48 6200BMSA
291 µg/L 50.0Benzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Bromobenzene 100 05/24/23 21:48 6200BMSA
<100 µg/L 100Bromochloromethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Bromodichloromethane 100 05/24/23 21:48 6200BMSA
<500 µg/L 500Bromoform 100 05/24/23 21:48 6200BMSA
<100 µg/L 100Bromomethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0n-Butylbenzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0sec-Butyl benzene 100 05/24/23 21:48 6200BMSA
<200 µg/L 200tert-Butyl benzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Carbon Tetrachloride 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Chlorobenzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Chlorodibromomethane 100 05/24/23 21:48 6200BMSA
<100 µg/L 100Chloroethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Chloroform 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Chloromethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.02-Chlorotoluene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.04-Chlorotoluene 100 05/24/23 21:48 6200BMSA
<200 µg/L 2001,2-Dibromo-3-Chloropropane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,2-Dibromoethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Dibromomethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,2-Dichlorobenzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,3-Dichlorobenzene 100 05/24/23 21:48 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 30 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-13R
96598 Matrix:
5/17/2023 10:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.01,4-Dichlorobenzene 100 05/24/23 21:48 6200BMSA
<500 µg/L 500Dichlorodifluoromethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,2-Dichloroethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,1-Dichloroethene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0cis-1,2-Dichloroethene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0trans-1,2-Dichloroethene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,2-Dichloropropane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,3-Dichloropropane 100 05/24/23 21:48 6200BMSA
<200 µg/L 2002,2-Dichloropropane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,1-Dichloropropene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0cis-1,3-Dichloropropene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0trans-1,3-Dichloropropene 100 05/24/23 21:48 6200BMSA
<20000 µg/L 20000Ethanol 100 05/24/23 21:48 6200BMSA
62.9 µg/L 50.0Ethylbenzene 100 05/24/23 21:48 6200BMSA
<300 µg/L 300Hexachlorobutadiene 100 05/24/23 21:48 6200BMSA
557 µg/L 50.0Di-Isopropyl Ether (DIPE)100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Isopropylbenzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.04-Isopropyl toluene 100 05/24/23 21:48 6200BMSA
<100 µg/L 1002-Hexanone 100 05/24/23 21:48 6200BMSA
<500 µg/L 500Methyl Ethyl Ketone (MEK)100 05/24/23 21:48 6200BMSA
<200 µg/L 200Methylene Chloride 100 05/24/23 21:48 6200BMSA
229 µg/L 100Methyl tert-butyl ether (MTBE)100 05/24/23 21:48 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 31 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-13R
96598 Matrix:
5/17/2023 10:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<100 µg/L 1004-Methyl-2-Pentanone 100 05/24/23 21:48 6200BMSA
<100 µg/L 100Naphthalene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0n-Propylbenzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Styrene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Tetrachloroethene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Toluene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,2,3-Trichlorobenzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,2,4-Trichlorobenzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,1,1-Trichloroethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,1,2-Trichloroethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Trichloroethene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Trichlorofluoromethane 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,2,3-Trichloropropane 100 05/24/23 21:48 6200BMSA
195 µg/L 50.01,2,4-Trimethylbenzene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.01,3,5-Trimethylbenzene 100 05/24/23 21:48 6200BMSA
<500 µg/L 500Vinyl Acetate 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0Vinyl Chloride 100 05/24/23 21:48 6200BMSA
<100 µg/L 100m,p-Xylene 100 05/24/23 21:48 6200BMSA
<50.0 µg/L 50.0o-Xylene 100 05/24/23 21:48 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 32 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:MW-13R
96598 Matrix:
5/17/2023 10:55
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<50.0 µg/L 50.0Xylene (Total)100 05/24/23 21:48 6200B
Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%05/24/23 21:48100 MSA V33670
Surrogate: Dibromofluoromethane 101 Limits: 70-130%05/24/23 21:48100 MSA V33670
Surrogate: 1,2-Dichloroethane - d4 107 Limits: 70-130%05/24/23 21:48100 MSA V33670
Surrogate: Toluene-d8 99.8 Limits: 70-130%05/24/23 21:48100 MSA V33670
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 33 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:FB
96599 Matrix:
5/17/2023 12:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<10.0 µg/L 10.0Acetone 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Benzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Bromobenzene 1 05/24/23 15:43 6200BMSA
<1.00 µg/L 1.00Bromochloromethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Bromodichloromethane 1 05/24/23 15:43 6200BMSA
<5.00 µg/L 5.00Bromoform 1 05/24/23 15:43 6200BMSA
<1.00 µg/L 1.00Bromomethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500n-Butylbenzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500sec-Butyl benzene 1 05/24/23 15:43 6200BMSA
<2.00 µg/L 2.00tert-Butyl benzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Carbon Tetrachloride 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Chlorobenzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Chlorodibromomethane 1 05/24/23 15:43 6200BMSA
<1.00 µg/L 1.00Chloroethane 1 05/24/23 15:43 6200BMSA
1.44 µg/L 0.500Chloroform 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Chloromethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5002-Chlorotoluene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5004-Chlorotoluene 1 05/24/23 15:43 6200BMSA
<2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,2-Dibromoethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Dibromomethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,2-Dichlorobenzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,3-Dichlorobenzene 1 05/24/23 15:43 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 34 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:FB
96599 Matrix:
5/17/2023 12:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.5001,4-Dichlorobenzene 1 05/24/23 15:43 6200BMSA
<5.00 µg/L 5.00Dichlorodifluoromethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,2-Dichloroethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,1-Dichloroethene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500cis-1,2-Dichloroethene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500trans-1,2-Dichloroethene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,2-Dichloropropane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,3-Dichloropropane 1 05/24/23 15:43 6200BMSA
<2.00 µg/L 2.002,2-Dichloropropane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,1-Dichloropropene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500cis-1,3-Dichloropropene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500trans-1,3-Dichloropropene 1 05/24/23 15:43 6200BMSA
<200 µg/L 200Ethanol 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Ethylbenzene 1 05/24/23 15:43 6200BMSA
<3.00 µg/L 3.00Hexachlorobutadiene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Di-Isopropyl Ether (DIPE)1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Isopropylbenzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5004-Isopropyl toluene 1 05/24/23 15:43 6200BMSA
<1.00 µg/L 1.002-Hexanone 1 05/24/23 15:43 6200BMSA
<5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 05/24/23 15:43 6200BMSA
<2.00 µg/L 2.00Methylene Chloride 1 05/24/23 15:43 6200BMSA
<1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 05/24/23 15:43 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 35 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:FB
96599 Matrix:
5/17/2023 12:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<1.00 µg/L 1.004-Methyl-2-Pentanone 1 05/24/23 15:43 6200BMSA
<1.00 µg/L 1.00Naphthalene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500n-Propylbenzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Styrene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Tetrachloroethene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Toluene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,1,1-Trichloroethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,1,2-Trichloroethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Trichloroethene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Trichlorofluoromethane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,2,3-Trichloropropane 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 05/24/23 15:43 6200BMSA
<5.00 µg/L 5.00Vinyl Acetate 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500Vinyl Chloride 1 05/24/23 15:43 6200BMSA
<1.00 µg/L 1.00m,p-Xylene 1 05/24/23 15:43 6200BMSA
<0.500 µg/L 0.500o-Xylene 1 05/24/23 15:43 6200BMSA
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 36 of 45
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27511
23-139-0018
01221
Withers & Ravenel
115 Mackenan Dr. BUILDING 117
David Vail
Cary
23-0307-FG Received : 05/19/2023
Tomberlin Grocery
Report Date : 05/26/2023
Sample ID :
Lab No :
Sampled:FB
96599 Matrix:
5/17/2023 12:30
Aqueous
Test Results Units MQL By Analytical
Method
Date / Time
Analyzed
DF
<0.500 µg/L 0.500Xylene (Total)1 05/24/23 15:43 6200B
Surrogate: 4-Bromofluorobenzene 103 Limits: 70-130%05/24/23 15:431 MSA V33670
Surrogate: Dibromofluoromethane 101 Limits: 70-130%05/24/23 15:431 MSA V33670
Surrogate: 1,2-Dichloroethane - d4 104 Limits: 70-130%05/24/23 15:431 MSA V33670
Surrogate: Toluene-d8 99.6 Limits: 70-130%05/24/23 15:431 MSA V33670
Qualifiers/
Definitions
Method Quantitation LimitMQLDilution FactorDF
Page 37 of 45
Quality Control Data
23-139-0018Report No:
Project Description:
Client ID:Withers & Ravenel
Tomberlin Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V33670QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V33669
Associated Lab Samples: 96592, 96593, 96594, 96595, 96596, 96597, 96598, 96599
LRB-V33669 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
05/24/23 14:5510.0< 10.0µg/LAcetone
05/24/23 14:550.500< 0.500µg/LBenzene
05/24/23 14:550.500< 0.500µg/LBromobenzene
05/24/23 14:551.00< 1.00µg/LBromochloromethane
05/24/23 14:550.500< 0.500µg/LBromodichloromethane
05/24/23 14:555.00< 5.00µg/LBromoform
05/24/23 14:551.00< 1.00µg/LBromomethane
05/24/23 14:550.500< 0.500µg/Ln-Butylbenzene
05/24/23 14:550.500< 0.500µg/Lsec-Butyl benzene
05/24/23 14:552.00< 2.00µg/Ltert-Butyl benzene
05/24/23 14:550.500< 0.500µg/LCarbon Tetrachloride
05/24/23 14:550.500< 0.500µg/LChlorobenzene
05/24/23 14:550.500< 0.500µg/LChlorodibromomethane
05/24/23 14:551.00< 1.00µg/LChloroethane
05/24/23 14:550.500< 0.500µg/LChloroform
05/24/23 14:550.500< 0.500µg/LChloromethane
05/24/23 14:550.500< 0.500µg/L2-Chlorotoluene
05/24/23 14:550.500< 0.500µg/L4-Chlorotoluene
05/24/23 14:552.00< 2.00µg/L1,2-Dibromo-3-Chloropropane
05/24/23 14:550.500< 0.500µg/L1,2-Dibromoethane
05/24/23 14:550.500< 0.500µg/LDibromomethane
05/24/23 14:550.500< 0.500µg/L1,2-Dichlorobenzene
05/24/23 14:550.500< 0.500µg/L1,3-Dichlorobenzene
05/24/23 14:550.500< 0.500µg/L1,4-Dichlorobenzene
05/24/23 14:555.00< 5.00µg/LDichlorodifluoromethane
05/24/23 14:550.500< 0.500µg/L1,1-Dichloroethane
05/24/23 14:550.500< 0.500µg/L1,2-Dichloroethane
Page 1 of 6Date:05/26/2023 01:40 PM
Page 38 of 45
Quality Control Data
23-139-0018Report No:
Project Description:
Client ID:Withers & Ravenel
Tomberlin Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V33670QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V33669
Associated Lab Samples: 96592, 96593, 96594, 96595, 96596, 96597, 96598, 96599
LRB-V33669 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
05/24/23 14:550.500< 0.500µg/L1,1-Dichloroethene
05/24/23 14:550.500< 0.500µg/Lcis-1,2-Dichloroethene
05/24/23 14:550.500< 0.500µg/Ltrans-1,2-Dichloroethene
05/24/23 14:550.500< 0.500µg/L1,2-Dichloropropane
05/24/23 14:550.500< 0.500µg/L1,3-Dichloropropane
05/24/23 14:552.00< 2.00µg/L2,2-Dichloropropane
05/24/23 14:550.500< 0.500µg/L1,1-Dichloropropene
05/24/23 14:550.500< 0.500µg/Lcis-1,3-Dichloropropene
05/24/23 14:550.500< 0.500µg/Ltrans-1,3-Dichloropropene
05/24/23 14:55200< 200µg/LEthanol
05/24/23 14:550.500< 0.500µg/LEthylbenzene
05/24/23 14:553.00< 3.00µg/LHexachlorobutadiene
05/24/23 14:550.500< 0.500µg/LDi-Isopropyl Ether (DIPE)
05/24/23 14:550.500< 0.500µg/LIsopropylbenzene
05/24/23 14:550.500< 0.500µg/L4-Isopropyl toluene
05/24/23 14:551.00< 1.00µg/L2-Hexanone
05/24/23 14:555.00< 5.00µg/LMethyl Ethyl Ketone (MEK)
05/24/23 14:552.00< 2.00µg/LMethylene Chloride
05/24/23 14:551.00< 1.00µg/LMethyl tert-butyl ether (MTBE)
05/24/23 14:551.00< 1.00µg/L4-Methyl-2-Pentanone
05/24/23 14:551.00< 1.00µg/LNaphthalene
05/24/23 14:550.500< 0.500µg/Ln-Propylbenzene
05/24/23 14:550.500< 0.500µg/LStyrene
05/24/23 14:550.500< 0.500µg/L1,1,1,2-Tetrachloroethane
05/24/23 14:550.500< 0.500µg/L1,1,2,2-Tetrachloroethane
05/24/23 14:550.500< 0.500µg/LTetrachloroethene
05/24/23 14:550.500< 0.500µg/LToluene
Page 2 of 6Date:05/26/2023 01:40 PM
Page 39 of 45
Quality Control Data
23-139-0018Report No:
Project Description:
Client ID:Withers & Ravenel
Tomberlin Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V33670QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V33669
Associated Lab Samples: 96592, 96593, 96594, 96595, 96596, 96597, 96598, 96599
LRB-V33669 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLBlank
ResultUnits
%
Recovery
% Rec
Limits
05/24/23 14:550.500< 0.500µg/L1,2,3-Trichlorobenzene
05/24/23 14:550.500< 0.500µg/L1,2,4-Trichlorobenzene
05/24/23 14:550.500< 0.500µg/L1,1,1-Trichloroethane
05/24/23 14:550.500< 0.500µg/L1,1,2-Trichloroethane
05/24/23 14:550.500< 0.500µg/LTrichloroethene
05/24/23 14:550.500< 0.500µg/LTrichlorofluoromethane
05/24/23 14:550.500< 0.500µg/L1,2,3-Trichloropropane
05/24/23 14:550.500< 0.500µg/L1,2,4-Trimethylbenzene
05/24/23 14:550.500< 0.500µg/L1,3,5-Trimethylbenzene
05/24/23 14:555.00< 5.00µg/LVinyl Acetate
05/24/23 14:550.500< 0.500µg/LVinyl Chloride
05/24/23 14:551.00< 1.00µg/Lm,p-Xylene
05/24/23 14:550.500< 0.500µg/Lo-Xylene
05/24/23 14:554-Bromofluorobenzene (S)103 70-130
05/24/23 14:55Dibromofluoromethane (S)99.4 70-130
05/24/23 14:551,2-Dichloroethane - d4 (S)106 70-130
05/24/23 14:55Toluene-d8 (S)101 70-130
LCS-V33669 LCSD-V33669Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
43.9 11012349.040.0µg/LAcetone 40-160 10.9 20.0
17.4 87.088.517.720.0µg/LBenzene 70-130 1.7 20.0
17.8 89.090.518.120.0µg/LBromobenzene 70-130 1.6 20.0
19.4 97.010320.520.0µg/LBromochloromethane 70-130 5.5 20.0
17.4 87.089.017.820.0µg/LBromodichloromethane 70-130 2.2 20.0
Page 3 of 6Date:05/26/2023 01:40 PM
Page 40 of 45
Quality Control Data
23-139-0018Report No:
Project Description:
Client ID:Withers & Ravenel
Tomberlin Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V33670QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V33669
LCS-V33669 LCSD-V33669Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
19.4 97.010520.920.0µg/LBromoform 70-130 7.4 20.0
20.1 10192.018.420.0µg/LBromomethane 60-140 8.8 20.0
17.5 87.592.018.420.0µg/Ln-Butylbenzene 70-130 5.0 20.0
17.1 85.588.017.620.0µg/Lsec-Butyl benzene 70-130 2.8 20.0
16.9 84.586.017.220.0µg/Ltert-Butyl benzene 70-130 1.7 20.0
18.7 93.595.519.120.0µg/LCarbon Tetrachloride 70-130 2.1 20.0
17.5 87.590.518.120.0µg/LChlorobenzene 70-130 3.3 20.0
19.1 95.510020.020.0µg/LChlorodibromomethane 70-130 4.6 20.0
21.3 10710621.120.0µg/LChloroethane 60-140 0.9 20.0
17.9 89.592.018.420.0µg/LChloroform 70-130 2.7 20.0
18.8 94.095.519.120.0µg/LChloromethane 60-140 1.5 20.0
17.2 86.089.017.820.0µg/L2-Chlorotoluene 70-130 3.4 20.0
17.4 87.090.518.120.0µg/L4-Chlorotoluene 70-130 3.9 20.0
19.6 98.010320.620.0µg/L1,2-Dibromoethane 70-130 4.9 20.0
19.0 95.010120.120.0µg/LDibromomethane 70-130 5.6 20.0
18.0 90.093.018.620.0µg/L1,2-Dichlorobenzene 70-130 3.2 20.0
17.6 88.091.518.320.0µg/L1,3-Dichlorobenzene 70-130 3.8 20.0
18.5 92.593.018.620.0µg/L1,4-Dichlorobenzene 70-130 0.5 20.0
19.3 96.598.519.720.0µg/LDichlorodifluoromethane 60-140 2.0 20.0
18.1 90.592.018.420.0µg/L1,1-Dichloroethane 70-130 1.6 20.0
20.6 10310521.020.0µg/L1,2-Dichloroethane 70-130 1.9 20.0
17.9 89.593.018.620.0µg/L1,1-Dichloroethene 70-130 3.8 20.0
19.0 95.098.019.620.0µg/Lcis-1,2-Dichloroethene 70-130 3.1 20.0
18.0 90.092.518.520.0µg/Ltrans-1,2-Dichloroethene 70-130 2.7 20.0
17.8 89.090.018.020.0µg/L1,2-Dichloropropane 70-130 1.1 20.0
18.9 94.599.519.920.0µg/L1,3-Dichloropropane 70-130 5.1 20.0
Page 4 of 6Date:05/26/2023 01:40 PM
Page 41 of 45
Quality Control Data
23-139-0018Report No:
Project Description:
Client ID:Withers & Ravenel
Tomberlin Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V33670QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V33669
LCS-V33669 LCSD-V33669Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
18.2 91.094.018.820.0µg/L2,2-Dichloropropane 70-130 3.2 20.0
18.7 93.599.019.820.0µg/L1,1-Dichloropropene 70-130 5.7 20.0
18.2 91.094.518.920.0µg/Lcis-1,3-Dichloropropene 70-130 3.7 20.0
19.4 97.098.019.620.0µg/Ltrans-1,3-Dichloropropene 70-130 1.0 20.0
654 131139693500µg/LEthanol 60-140 5.7 20.0
18.0 90.093.518.720.0µg/LEthylbenzene 70-130 3.8 20.0
19.8 99.010621.120.0µg/LHexachlorobutadiene 70-130 6.3 20.0
18.1 90.592.018.420.0µg/LDi-Isopropyl Ether (DIPE)70-130 1.6 20.0
17.4 87.090.018.020.0µg/LIsopropylbenzene 70-130 3.3 20.0
17.8 89.092.018.420.0µg/L4-Isopropyl toluene 70-130 3.3 20.0
22.8 11413025.920.0µg/L2-Hexanone 60-140 12.7 20.0
23.7 11913025.920.0µg/LMethyl Ethyl Ketone (MEK)60-140 8.8 20.0
18.7 93.592.518.520.0µg/LMethylene Chloride 70-130 1.0 20.0
20.2 10110320.520.0µg/LMethyl tert-butyl ether (MTBE)70-130 1.4 20.0
22.9 11512625.220.0µg/L4-Methyl-2-Pentanone 60-140 9.5 20.0
23.6 11812725.320.0µg/LNaphthalene 70-130 6.9 20.0
17.5 87.588.017.620.0µg/Ln-Propylbenzene 70-130 0.5 20.0
18.2 91.088.517.720.0µg/LStyrene 70-130 2.7 20.0
17.9 89.592.018.420.0µg/L1,1,1,2-Tetrachloroethane 70-130 2.7 20.0
20.6 10311122.120.0µg/L1,1,2,2-Tetrachloroethane 70-130 7.0 20.0
16.9 84.588.017.620.0µg/LTetrachloroethene 70-130 4.0 20.0
17.6 88.090.018.020.0µg/LToluene 70-130 2.2 20.0
22.8 11412424.720.0µg/L1,2,3-Trichlorobenzene 70-130 8.0 20.0
19.1 95.599.519.920.0µg/L1,2,4-Trichlorobenzene 70-130 4.1 20.0
17.3 86.588.517.720.0µg/L1,1,1-Trichloroethane 70-130 2.2 20.0
20.0 10010220.320.0µg/L1,1,2-Trichloroethane 70-130 1.4 20.0
Page 5 of 6Date:05/26/2023 01:40 PM
Page 42 of 45
Quality Control Data
23-139-0018Report No:
Project Description:
Client ID:Withers & Ravenel
Tomberlin Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V33670QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V33669
LCS-V33669 LCSD-V33669Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
18.2 91.091.518.320.0µg/LTrichloroethene 70-130 0.5 20.0
19.1 95.597.019.420.0µg/LTrichlorofluoromethane 60-140 1.5 20.0
21.2 10611623.120.0µg/L1,2,3-Trichloropropane 70-130 8.5 20.0
17.4 87.090.518.120.0µg/L1,2,4-Trimethylbenzene 70-130 3.9 20.0
17.7 88.590.518.120.0µg/L1,3,5-Trimethylbenzene 70-130 2.2 20.0
23.2 11612525.020.0µg/LVinyl Acetate 60-140 7.4 20.0
19.5 97.510120.120.0µg/LVinyl Chloride 60-140 3.0 20.0
35.4 88.592.236.940.0µg/Lm,p-Xylene 70-130 4.1 20.0
17.4 87.090.018.020.0µg/Lo-Xylene 70-130 3.3 20.0
99.299.04-Bromofluorobenzene (S)70-130
101101Dibromofluoromethane (S)70-130
1071081,2-Dichloroethane - d4 (S)70-130
99.8101Toluene-d8 (S)70-130
Page 6 of 6Date:05/26/2023 01:40 PM
Page 43 of 45
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:23-139-0018
Withers & Ravenel
01221
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:IRT15 3.1C
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:05/19/2023 13:27:51
Special precautions or instructions included?
Comments:
Page 44 of 45
Page 45 of 45
WithersRavenel
Our People. Your Success.

APPENDIX C AQUIFER TESTING AND PREDICTIVE MODELING FORMS

Well:MW-3 Conducted by:Powell
Test Date:5/16/2023 Entered/date:05/23/23
Test Type:Water Level Recovery Checked/date: Bellis 5-23-23
WELL DATA CALCULATION OF K
SWL =20.50 (ft BTOC) K = [(rc^2 ln(Re/rw))/2Le]*(1/t)ln(yo/yt) Elapsed time Log y y WL
WD =35.00 (ft BTOC)(min) (ft) (ft BTOC)
WD =35.00 (ft BGS) yo =0.426 (ft) from plot 0.090 -0.24 0.581 19.919
DTSP =13.00 (ft BGS) yt =0.061 (ft) from plot 0.170 -0.45 0.352 20.148
rc =0.083 (ft) t =17.120 (minutes) from plot 0.270 -0.37 0.426 20.074
n = 0.30 ln(Re/rw) = 2.63 0.370 -0.58 0.262 20.238
0.470 -0.38 0.421 20.079
rw =0.33 (ft)0.580 -0.50 0.314 20.186
rc (adjusted) = 0.19 (ft)K = 3.6E-01 (ft/day)0.700 -0.39 0.411 20.089
0.830 -0.41 0.392 20.108
0.960 -0.42 0.378 20.122
1.100 -0.43 0.369 20.131
Le = 22 (ft)K = 1.3E-04 (cm/sec)1.250 -0.44 0.365 20.135
Lw = 14.50 (ft)1.410 -0.46 0.350 20.150
Le/rw = 66.67 1.570 -0.47 0.341 20.159
H =40.00 (ft)1.750 -0.47 0.335 20.165
1.940 -0.49 0.323 20.177
2.140 -0.50 0.314 20.186
2.350 -0.51 0.311 20.189
2.570 -0.53 0.297 20.203
2.810 -0.55 0.284 20.216
3.060 -0.56 0.278 20.222
Calculation of ln(Re/rw)3.320 -0.57 0.267 20.233
3.600 -0.59 0.255 20.245
Where: Lw < H;3.900 -0.60 0.252 20.248
4.214 -0.62 0.241 20.259
ln(Re/rw) = [{1.1/(ln(Lw/rw))}+{A+Bln((H-Lw)/rw)}/(Le/rw)]^-1=2.63 4.550 -0.63 0.233 20.267
4.900 -0.65 0.224 20.276
Where: Lw = H;5.270 -0.65 0.222 20.278
5.670 -0.68 0.207 20.293
ln(Re/rw) = [{1.1/(ln(Lw/rw))}+{C/(Le/rw)}]^-1 = 2.94 6.090 -0.69 0.205 20.295
6.530 -0.71 0.194 20.306
Calculation of Coefficients 7.000 -0.75 0.178 20.322
Value range for Le/rw from Table of Coefficients 7.500 -0.73 0.185 20.315
Le/rw A B C 8.030 -0.77 0.169 20.331
60 3.45 0.52 3 8.590 -0.82 0.152 20.348
70 3.7 0.6 3.4 9.190 -0.83 0.149 20.351
9.790 -0.86 0.138 20.362
Interpolated values of A, B and C for Le/rw 10.490 -0.88 0.132 20.368
66.67 3.62 0.57 3.27 11.190 -0.91 0.123 20.377
11.890 -0.91 0.122 20.378
Coefficients Table 12.690 -1.01 0.098 20.402
13.590 -1.06 0.088 20.412
Le/rw A Le/rw B Le/rw C 14.390 -1.08 0.084 20.416
4 1.75 4 0.25 4 0.75 15.390 -1.12 0.076 20.424
5 1.76 5 0.25 5 0.85 16.390 -1.17 0.067 20.433
6 1.77 6 0.25 6 0.90 17.390 -1.21 0.061 20.439
7 1.80 7 0.25 7 1.00
8 1.83 8 0.25 8 1.10
9 1.90 9 0.25 9 1.20
10 1.95 10 0.25 10 1.30
15 2.10 15 0.27 15 1.50
20 2.23 20 0.29 20 1.75
25 2.40 25 0.31 25 1.90
30 2.50 30 0.35 30 2.10
40 2.75 40 0.45 40 2.45
50 3.00 50 0.50 50 2.70
60 3.45 60 0.52 60 3.00
70 3.70 70 0.60 70 3.40
80 3.90 80 0.65 80 3.60
90 4.20 90 0.70 90 3.85
100 4.50 100 0.75 100 4.20
150 5.45 150 0.98 150 5.70
200 6.10 200 1.20 200 7.00
250 6.70 250 1.30 250 8.00
300 7.10 300 1.50 300 8.80
400 7.75 400 1.90 400 9.90
500 8.20 500 2.20 500 10.60
600 8.50 600 2.33 600 11.10
700 8.70 700 2.50 700 11.50
800 8.90 800 2.70 800 11.80
900 9.00 900 2.75 900 12.00
1000 9.20 1000 2.83 1000 12.40
1500 9.50 1500 3.18 1500 12.90
Reference: Bouwer(1989), Bouwer and Rice(1976)
Tomberline Grocery, Monroe Union County, NC
Hydraulic Conductivity (K) Calculation Worksheet
W&R Project No. 23-0307-FG
TEST DATA
0.010
0.100
1.000
0.000 5.000 10.000 15.000Water Level Recovery Y (ft)Elasped Time in minutes
Water Level Recovery vs Time: MW-3
Yo
Yt
Well:MW-5(a)Conducted by:Powell
Test Date:5/16/2023 Entered/date:05/23/23
Test Type:Water Level Recovery Checked/date: Bellis 5-23-23
WELL DATA CALCULATION OF K
SWL =23.15 (ft BTOC) K = [(rc^2 ln(Re/rw))/2Le]*(1/t)ln(yo/yt) Elapsed time Log y y WL
WD =40.00 (ft BTOC)(min) (ft) (ft BTOC)
WD =40.00 (ft BGS) yo =0.146 (ft) from plot 0.056 0.11 1.290 21.860
DTSP =18.00 (ft BGS) yt =0.030 (ft) from plot 0.109 -0.06 0.880 22.270
rc =0.083 (ft) t =1.570 (minutes) from plot 0.169 -0.25 0.557 22.593
n = 0.30 ln(Re/rw) = 2.70 0.229 -0.40 0.397 22.753
0.299 -0.55 0.285 22.865
rw =0.33 (ft)0.369 -0.66 0.219 22.931
rc (adjusted) = 0.19 (ft)K = 3.3E+00 (ft/day)0.439 -0.76 0.172 22.978
0.519 -0.84 0.146 23.004
0.609 -0.93 0.118 23.032
0.689 -0.95 0.112 23.038
Le = 22 (ft)K = 1.2E-03 (cm/sec)0.789 -1.07 0.085 23.065
Lw = 16.85 (ft)0.889 -1.09 0.082 23.068
Le/rw = 66.67 0.989 -1.14 0.073 23.077
H =40.00 (ft)1.099 -1.19 0.065 23.085
1.223 -1.27 0.054 23.096
1.349 -1.26 0.055 23.095
1.479 -1.35 0.045 23.105
1.619 -1.35 0.045 23.105
1.769 -1.39 0.041 23.109
1.929 -1.46 0.035 23.115
Calculation of ln(Re/rw)2.089 -1.52 0.030 23.120
2.269 -1.49 0.032 23.118
Where: Lw < H;
ln(Re/rw) = [{1.1/(ln(Lw/rw))}+{A+Bln((H-Lw)/rw)}/(Le/rw)]^-1=2.70
Where: Lw = H;
ln(Re/rw) = [{1.1/(ln(Lw/rw))}+{C/(Le/rw)}]^-1 = 3.03
Calculation of Coefficients
Value range for Le/rw from Table of Coefficients
Le/rw A B C
60 3.45 0.52 3
70 3.7 0.6 3.4
Interpolated values of A, B and C for Le/rw
66.67 3.62 0.57 3.27
Coefficients Table
Le/rw A Le/rw B Le/rw C
4 1.75 4 0.25 4 0.75
5 1.76 5 0.25 5 0.85
6 1.77 6 0.25 6 0.90
7 1.80 7 0.25 7 1.00
8 1.83 8 0.25 8 1.10
9 1.90 9 0.25 9 1.20
10 1.95 10 0.25 10 1.30
15 2.10 15 0.27 15 1.50
20 2.23 20 0.29 20 1.75
25 2.40 25 0.31 25 1.90
30 2.50 30 0.35 30 2.10
40 2.75 40 0.45 40 2.45
50 3.00 50 0.50 50 2.70
60 3.45 60 0.52 60 3.00
70 3.70 70 0.60 70 3.40
80 3.90 80 0.65 80 3.60
90 4.20 90 0.70 90 3.85
100 4.50 100 0.75 100 4.20
150 5.45 150 0.98 150 5.70
200 6.10 200 1.20 200 7.00
250 6.70 250 1.30 250 8.00
300 7.10 300 1.50 300 8.80
400 7.75 400 1.90 400 9.90
500 8.20 500 2.20 500 10.60
600 8.50 600 2.33 600 11.10
700 8.70 700 2.50 700 11.50
800 8.90 800 2.70 800 11.80
900 9.00 900 2.75 900 12.00
1000 9.20 1000 2.83 1000 12.40
1500 9.50 1500 3.18 1500 12.90
Reference: Bouwer(1989), Bouwer and Rice(1976)
Tomberline Grocery, Monroe Union County, NC
Hydraulic Conductivity (K) Calculation Worksheet
W&R Project No. 23-0307-FG
TEST DATA
0.010
0.100
1.000
0.000 1.000 2.000 3.000Water Level Recovery Y (ft)Elasped Time in minutes
Water Level Recovery vs Time: MW-5a
Yo
Yt
Well:MW-7 Conducted by:Powell
Test Date:5/16/2023 Entered/date:05/23/23
Test Type:Water Level Recovery Checked/date: Bellis 5-23-23
WELL DATA CALCULATION OF K
SWL =26.70 (ft BTOC) K = [(rc^2 ln(Re/rw))/2Le]*(1/t)ln(yo/yt) Elapsed time Log y y WL
WD =52.00 (ft BTOC)(min) (ft) (ft BTOC)
WD =25.00 (ft BGS) yo =1.052 (ft) from plot 0.140 0.04 1.101 25.599
DTSP =18.00 (ft BGS) yt =0.806 (ft) from plot 0.290 0.03 1.071 25.629
rc =0.083 (ft) t =46.750 (minutes) from plot 0.450 0.03 1.072 25.628
n = 0.30 ln(Re/rw) = 2.44 0.610 0.03 1.062 25.638
0.790 0.03 1.062 25.638
rw =0.33 (ft)0.980 0.02 1.052 25.648
rc (adjusted) = 0.19 (ft)K = 5.4E-02 (ft/day)1.180 0.02 1.049 25.651
1.390 0.02 1.047 25.653
1.610 0.02 1.042 25.658
1.850 0.01 1.034 25.666
Le = 7 (ft)K = 1.9E-05 (cm/sec)2.100 0.01 1.029 25.671
Lw = 25.30 (ft)2.360 0.01 1.020 25.680
Le/rw = 21.21 2.640 0.01 1.021 25.679
H =40.00 (ft)2.940 0.01 1.020 25.680
3.250 0.01 1.018 25.682
3.590 0.00 1.010 25.690
3.940 0.00 1.000 25.700
4.310 0.00 1.005 25.695
4.710 0.00 0.997 25.703
5.130 0.00 0.998 25.702
Calculation of ln(Re/rw)5.570 -0.01 0.988 25.712
6.040 0.00 0.991 25.709
Where: Lw < H;6.540 -0.01 0.984 25.716
7.070 -0.01 0.983 25.717
ln(Re/rw) = [{1.1/(ln(Lw/rw))}+{A+Bln((H-Lw)/rw)}/(Le/rw)]^-1=2.44 7.630 -0.02 0.965 25.735
8.230 -0.01 0.971 25.729
Where: Lw = H;8.830 -0.01 0.972 25.728
9.530 -0.02 0.960 25.740
ln(Re/rw) = [{1.1/(ln(Lw/rw))}+{C/(Le/rw)}]^-1 = 3.03 10.230 -0.02 0.958 25.742
10.930 -0.02 0.962 25.738
Calculation of Coefficients 11.730 -0.02 0.954 25.746
Value range for Le/rw from Table of Coefficients 12.630 -0.02 0.947 25.753
Le/rw A B C 13.430 -0.03 0.940 25.760
20 2.23 0.29 1.75 14.430 -0.03 0.939 25.761
30 2.5 0.35 2.1 15.430 -0.03 0.933 25.767
16.430 -0.04 0.921 25.779
Interpolated values of A, B and C for Le/rw 17.530 -0.03 0.924 25.776
21.21 2.26 0.30 1.79 18.730 -0.04 0.920 25.780
20.030 -0.04 0.910 25.790
Coefficients Table 21.330 -0.05 0.901 25.799
22.730 -0.05 0.890 25.810
Le/rw A Le/rw B Le/rw C 24.230 -0.05 0.885 25.815
4 1.75 4 0.25 4 0.75 25.830 -0.05 0.885 25.815
5 1.76 5 0.25 5 0.85 27.430 -0.05 0.882 25.818
6 1.77 6 0.25 6 0.90 29.230 -0.06 0.870 25.830
7 1.80 7 0.25 7 1.00 31.130 -0.06 0.861 25.839
8 1.83 8 0.25 8 1.10 33.130 -0.07 0.851 25.849
9 1.90 9 0.25 9 1.20 35.230 -0.08 0.840 25.860
10 1.95 10 0.25 10 1.30 37.430 -0.08 0.837 25.863
15 2.10 15 0.27 15 1.50 39.830 -0.08 0.837 25.863
20 2.23 20 0.29 20 1.75 42.330 -0.08 0.824 25.876
25 2.40 25 0.31 25 1.90 44.930 -0.09 0.816 25.884
30 2.50 30 0.35 30 2.10 47.730 -0.09 0.806 25.894
40 2.75 40 0.45 40 2.45 50.730 -0.10 0.791 25.909
50 3.00 50 0.50 50 2.70 53.830 -0.11 0.781 25.919
60 3.45 60 0.52 60 3.00
70 3.70 70 0.60 70 3.40
80 3.90 80 0.65 80 3.60
90 4.20 90 0.70 90 3.85
100 4.50 100 0.75 100 4.20
150 5.45 150 0.98 150 5.70
200 6.10 200 1.20 200 7.00
250 6.70 250 1.30 250 8.00
300 7.10 300 1.50 300 8.80
400 7.75 400 1.90 400 9.90
500 8.20 500 2.20 500 10.60
600 8.50 600 2.33 600 11.10
700 8.70 700 2.50 700 11.50
800 8.90 800 2.70 800 11.80
900 9.00 900 2.75 900 12.00
1000 9.20 1000 2.83 1000 12.40
1500 9.50 1500 3.18 1500 12.90
Reference: Bouwer(1989), Bouwer and Rice(1976)
Tomberline Grocery, Monroe Union County, NC
Hydraulic Conductivity (K) Calculation Worksheet
W&R Project No. 23-0307-FG
TEST DATA
0.8000.000 10.000 20.000 30.000 40.000 50.000Water Level Recovery Y (ft)Elasped Time in minutes
Water Level Recovery vs Time: MW-7
Yo
Yt
Well:MW-8 Conducted by:Powell
Test Date:5/16/2023 Entered/date:05/23/23
Test Type:Water Level Recovery Checked/date: Bellis 5-23-23
WELL DATA CALCULATION OF K
SWL =22.65 (ft BTOC) K = [(rc^2 ln(Re/rw))/2Le]*(1/t)ln(yo/yt) Elapsed time Log y y WL
WD =41.00 (ft BTOC)(min) (ft) (ft BTOC)
WD =29.00 (ft BGS) yo =1.458(ft) from plot 0.086 0.16 1.458 21.192
DTSP =18.00 (ft BGS) yt =0.364(ft) from plot 0.133 0.20 1.597 21.053
rc =0.083 (ft) t =41.406(minutes) from plot 0.183 0.12 1.320 21.330
n = 0.30 ln(Re/rw) = 2.50 0.236 0.15 1.414 21.236
0.292 0.14 1.391 21.259
rw =0.33 (ft)0.352 0.13 1.358 21.292
rc (adjusted) = 0.19 (ft)K = 2.1E-01 (ft/day)0.412 0.14 1.380 21.270
0.482 0.14 1.372 21.278
0.552 0.14 1.366 21.284
0.622 0.14 1.378 21.272
Le = 11 (ft)K = 7.3E-05 (cm/sec)0.702 0.14 1.365 21.285
Lw = 18.35 (ft)0.792 0.14 1.389 21.261
Le/rw = 33.33 0.872 0.13 1.349 21.301
H =40.00 (ft)0.972 0.13 1.342 21.308
1.072 0.12 1.331 21.319
1.172 0.13 1.337 21.313
1.282 0.12 1.330 21.320
1.402 0.12 1.320 21.330
1.532 0.12 1.313 21.337
1.662 0.12 1.307 21.343
Calculation of ln(Re/rw)1.802 0.11 1.299 21.351
1.952 0.11 1.290 21.360
Where: Lw < H;2.112 0.11 1.286 21.364
2.272 0.11 1.276 21.374
ln(Re/rw) = [{1.1/(ln(Lw/rw))}+{A+Bln((H-Lw)/rw)}/(Le/rw)]^-1=2.50 2.452 0.10 1.264 21.386
2.642 0.10 1.261 21.389
Where: Lw = H;2.842 0.10 1.253 21.397
3.052 0.10 1.245 21.405
ln(Re/rw) = [{1.1/(ln(Lw/rw))}+{C/(Le/rw)}]^-1 = 2.94 3.272 0.09 1.242 21.408
3.512 0.09 1.224 21.426
Calculation of Coefficients 3.767 0.08 1.211 21.439
Value range for Le/rw from Table of Coefficients 4.022 0.08 1.206 21.444
Le/rw A B C 4.302 0.08 1.192 21.458
30 2.5 0.35 2.1 4.602 0.07 1.178 21.472
40 2.75 0.45 2.45 4.912 0.07 1.165 21.485
5.252 0.07 1.162 21.488
Interpolated values of A, B and C for Le/rw 5.602 0.06 1.142 21.508
33.33 2.58 0.38 2.22 5.972 0.05 1.122 21.528
6.372 0.05 1.111 21.539
Coefficients Table 6.792 0.04 1.099 21.551
7.232 0.04 1.085 21.565
Le/rw A Le/rw B Le/rw C 7.702 0.03 1.069 21.581
4 1.75 4 0.25 4 0.75 8.202 0.02 1.057 21.593
5 1.76 5 0.25 5 0.85 8.732 0.01 1.033 21.617
6 1.77 6 0.25 6 0.90 9.292 0.01 1.014 21.636
7 1.80 7 0.25 7 1.00 9.892 0.00 0.996 21.654
8 1.83 8 0.25 8 1.10 10.492 -0.01 0.980 21.670
9 1.90 9 0.25 9 1.20 11.192 -0.02 0.951 21.699
10 1.95 10 0.25 10 1.30 11.892 -0.03 0.936 21.714
15 2.10 15 0.27 15 1.50 12.592 -0.03 0.923 21.727
20 2.23 20 0.29 20 1.75 13.392 -0.05 0.900 21.750
25 2.40 25 0.31 25 1.90 14.292 -0.05 0.883 21.767
30 2.50 30 0.35 30 2.10 15.092 -0.07 0.857 21.793
40 2.75 40 0.45 40 2.45 16.092 -0.08 0.824 21.826
50 3.00 50 0.50 50 2.70 17.092 -0.10 0.799 21.851
60 3.45 60 0.52 60 3.00 18.092 -0.11 0.769 21.881
70 3.70 70 0.60 70 3.40 19.192 -0.12 0.751 21.899
80 3.90 80 0.65 80 3.60 20.392 -0.14 0.718 21.932
90 4.20 90 0.70 90 3.85 21.692 -0.16 0.690 21.960
100 4.50 100 0.75 100 4.20 22.992 -0.18 0.660 21.990
150 5.45 150 0.98 150 5.70 24.392 -0.19 0.642 22.008
200 6.10 200 1.20 200 7.00 25.892 -0.22 0.600 22.050
250 6.70 250 1.30 250 8.00 27.492 -0.24 0.580 22.070
300 7.10 300 1.50 300 8.80 29.092 -0.27 0.539 22.111
400 7.75 400 1.90 400 9.90 30.892 -0.29 0.508 22.142
500 8.20 500 2.20 500 10.60 32.792 -0.32 0.478 22.172
600 8.50 600 2.33 600 11.10 34.792 -0.35 0.451 22.199
700 8.70 700 2.50 700 11.50 36.892 -0.38 0.420 22.230
800 8.90 800 2.70 800 11.80 39.092 -0.41 0.391 22.259
900 9.00 900 2.75 900 12.00 41.492 -0.44 0.364 22.286
1000 9.20 1000 2.83 1000 12.40
1500 9.50 1500 3.18 1500 12.90
Reference: Bouwer(1989), Bouwer and Rice(1976)
Tomberline Grocery, Monroe Union County, NCHydraulic Conductivity (K) Calculation Worksheet
W&R Project No. 23-0307-FG
TEST DATA
0.3000.000 10.000 20.000 30.000 40.000Water Level Recovery Y (ft)Elasped Time in minutes
Water Level Recovery vs Time: MW-8
Yo
Yt
BIOSCREEN Natural Attenuation Decision Support System Tomberline Grocery Data Input Instructions:
Air Force Center for Environmental Excellence Version 1.4 Benzene 115 1. Enter value directly....orRun Name 2. Calculate by filling in grey
1. HYDROGEOLOGY 5. GENERAL 0.02 cells below. (To restore
Seepage Velocity*Vs 20.7 (ft/yr)Modeled Area Length*550 (ft) formulas, hit button below).
or Modeled Area Width*50 (ft)Variable* Data used directly in model.
Hydraulic Conductivity K 1.2E-04 (cm/sec)Simulation Time* 30 (yr)20 Value calculated by model.Hydraulic Gradient i 0.05 (ft/ft) (Don't enter any data).
Porosity n 0.3 (-)6. SOURCE DATA
Source Thickness in Sat.Zone*15 (ft)
2. DISPERSION Source Zones:Longitudinal Dispersivity*alpha x 5.7 (ft)Width* (ft)Conc. (mg/L)*
Transverse Dispersivity*alpha y 0.6 (ft)5 0.004 1
Vertical Dispersivity*alpha z 0.0 (ft)5 0.044
or 30 4.42
Estimated Plume Length Lp 75 (ft)5 0.04450.004
3. ADSORPTION Source Halflife (see Help):
Retardation Factor*R 1.2 (-)Infinite Infinite (yr)View of Plume Looking Down
or Inst. React.1st Order
Soil Bulk Density rho 1.7 (kg/l)Soluble Mass infinite (Kg)Observed Centerline Concentrations at Monitoring Wells
Partition Coefficient Koc 38 (L/kg)In Source NAPL, Soil If No Data Leave Blank or Enter "0"
FractionOrganicCarbon foc 1.0E-3 (-)7. FIELD DATA FOR COMPARISON
Concentration (mg/L)4.42 .044 .004 .001 .0 .0 .0 .0 .0 .0 .0
4. BIODEGRADATION Dist. from Source (ft)0 10 65 120 175 230 285 340 395 450 505
1st Order Decay Coeff*lambda 3.5E-1 (per yr)
or 8. CHOOSE TYPE OF OUTPUT TO SEE:
Solute Half-Life t-half 2.00 (year)
or Instantaneous Reaction Model
Delta Oxygen*DO 2.2 (mg/L)
Delta Nitrate*NO3 0 (mg/L)
Observed Ferrous Iron*Fe2+0 (mg/L)
Delta Sulfate*SO4 0 (mg/L)
Observed Methane*CH4 0 (mg/L)
Vertical Plane Source: Look at Plume Cross-Section and Input Concentrations & Widths
for Zones 1, 2, and 3
L
W
or
oror
or
12
34
5
or
or
View Output
Paste Example Dataset
View Output Restore Formulas for Vs,
RUN CENTERLINE RUN ARRAY Help Recalculate This
DISSOLVED HYDROCARBON CONCENTRATION ALONG PLUME CENTERLINE (mg/L at Z=0)Distance from Source (ft)TYPE OF MODEL0 55 110 165 220 275 330 385 440 495 550No Degradation4.420 4.164 3.626 3.213 2.906 2.668 2.461 2.213 1.812 1.217 0.6071st Order Decay4.420 1.512 0.478 0.154 0.051 0.017 0.006 0.002 0.001 0.000 0.000Inst. Reaction4.420 4.163 3.608 3.164 2.825 2.556 2.317 2.023 1.535 0.805 0.051Field Data from Site4.420 0.044 0.004 0.001Time:30 Years0.0001.0002.0003.0004.0005.0000 100 200 300 400 5006Concentration(mg/L)Distance From Source (ft)1st Order DecayInstantaneous ReactionNo DegradationField Data from SiteNext TimestepPrev TimestepCalculateAnimationRecalculate This Return to
DISSOLVED HYDROCARBON CONCENTRATION ALONG PLUME CENTERLINE (mg/L at Z=0)Distance from Source (ft)TYPE OF MODEL0 55 110 165 220 275 330 385 440 495 550No Degradation4.420 4.164 3.626 3.213 2.906 2.670 2.483 2.329 2.201 2.092 1.9971st Order Decay4.420 1.512 0.478 0.154 0.051 0.017 0.006 0.002 0.001 0.000 0.000Inst. Reaction4.420 4.163 3.608 3.164 2.825 2.559 2.344 2.166 2.016 1.886 1.774Field Data from Site4.420 0.044 0.004 0.001Time:100 Years0.0001.0002.0003.0004.0005.0000 100 200 300 400 5006Concentration(mg/L)Distance From Source (ft)1st Order DecayInstantaneous ReactionNo DegradationField Data from SiteNext TimestepPrev TimestepCalculateAnimationRecalculate This Return to
TransverseDISSOLVED HYDROCARBON CONCENTRATIONS IN PLUME (mg/L at Z=0)Distance (ft) Distance from Source (ft)Model to Display:0 55 110 165 220 275 330 385 440 495 55025 0.004 0.466 0.829 1.029 1.147 1.216 1.247 1.216 1.061 0.751 0.39013 4.420 2.765 2.577 2.437 2.311 2.195 2.078 1.907 1.585 1.079 0.5440 4.420 4.164 3.626 3.213 2.906 2.668 2.461 2.213 1.812 1.217 0.607-13 4.420 2.765 2.577 2.437 2.3112.195 2.078 1.907 1.585 1.079 0.544-25 0.004 0.466 0.829 1.029 1.1471.216 1.247 1.216 1.061 0.751 0.390MASS9.6E+2 9.6E+2 9.4E+2 9.2E+2 8.9E+2 8.6E+2 8.2E+2 7.6E+2 6.4E+2 4.4E+2 2.2E+2FLUX(mg/day)Time:30 YearsTarget Level: 0.005 mg/L Displayed Model: No DegradationPlume and Source Masses (Order-of-Magnitude Accuracy)Plume Mass if No Biodegradation10.5(Kg)- Actual Plume Mass10.5(Kg)= Plume Mass Removed by Biodeg0.0(Kg)0 %Change in Electron Acceptor/Byproduct Masses:Oxygen Nitrate Iron II Sulfate Methanena na na na na(Kg)Contam. Mass in Source (t=0 Years) infinite(Kg)Contam. Mass in Source Now (t=30Years) Infinite(Kg) Current Volume of Groundwater in Plume 3.8(ac-ft) Flowrate of Water Through Source Zone 0.107(ac-ft/yr)250-250.0000.5001.0001.5002.0002.5003.0003.5004.0004.500055110165220275330385440495(ft)Concentration (mg/L)(ft)Recalculate No Degradation 1st Order Decay Instantaneous Plot All DataPlot Data > TargetMass HELP
TransverseDISSOLVED HYDROCARBON CONCENTRATIONS IN PLUME (mg/L at Z=0)Distance (ft) Distance from Source (ft)Model to Display:0 55 110 165 220 275 330 385 440 495 55025 0.004 0.115 0.479 0.678 0.796 0.864 0.890 0.843 0.641 0.247 0.00013 4.420 2.725 2.484 2.307 2.153 2.014 1.872 1.664 1.268 0.640 0.0000 4.420 4.163 3.608 3.164 2.825 2.556 2.317 2.023 1.535 0.805 0.051-13 4.420 2.725 2.484 2.307 2.1532.014 1.872 1.664 1.268 0.640 0.000-25 0.004 0.115 0.479 0.678 0.7960.864 0.890 0.843 0.641 0.247 0.000MASS9.6E+2 8.9E+2 8.6E+2 8.2E+2 7.9E+2 7.5E+2 7.1E+2 6.4E+2 4.8E+2 2.3E+2 4.6E+0FLUX(mg/day)Time:30 YearsTarget Level: 0.005 mg/L Displayed Model: Inst. ReactionPlume and Source Masses (Order-of-Magnitude Accuracy)Plume Mass if No Biodegradation13.3(Kg)- Actual Plume Mass9.0(Kg)= Plume Mass Removed by Biodeg4.3(Kg)(33 %)Change in Electron Acceptor/Byproduct Masses:Oxygen Nitrate Iron II Sulfate Methane-13.6 +0.0 +0.0 +0.0 +0.0(Kg)Contam. Mass in Source (t=0 Years) infinite(Kg)Contam. Mass in Source Now (t=30Years) Infinite(Kg) Current Volume of Groundwater in Plume 3.5(ac-ft) Flowrate of Water Through Source Zone 0.107(ac-ft/yr)250-250.0000.5001.0001.5002.0002.5003.0003.5004.0004.500055110165220275330385440495(ft)Concentration (mg/L)(ft)Recalculate No Degradation 1st Order Decay Instantaneous Plot All DataPlot Data > TargetMass HELP
TransverseDISSOLVED HYDROCARBON CONCENTRATIONS IN PLUME (mg/L at Z=0)Distance (ft) Distance from Source (ft)Model to Display:0 55 110 165 220 275 330 385 440 495 55025 0.004 0.169 0.109 0.049 0.020 0.008 0.003 0.001 0.000 0.000 0.00013 4.420 1.004 0.340 0.117 0.040 0.014 0.005 0.002 0.001 0.000 0.0000 4.420 1.512 0.478 0.154 0.051 0.017 0.006 0.002 0.001 0.000 0.000-13 4.420 1.004 0.340 0.117 0.0400.014 0.005 0.002 0.001 0.000 0.000-25 0.004 0.169 0.109 0.049 0.0200.008 0.003 0.001 0.000 0.000 0.000MASS9.6E+2 3.5E+2 1.2E+2 4.4E+1 1.5E+1 5.4E+0 1.9E+0 6.7E-1 2.3E-1 7.9E-2 2.4E-2FLUX(mg/day)Time:30 YearsTarget Level: 0.005 mg/L Displayed Model: 1st Order DecayPlume and Source Masses (Order-of-Magnitude Accuracy)Plume Mass if No Biodegradation10.5(Kg)- Actual Plume Mass1.2(Kg)= Plume Mass Removed by Biodeg9.3(Kg)(88 %)Change in Electron Acceptor/Byproduct Masses:Oxygen Nitrate Iron II Sulfate Methanena na na na na(Kg)Contam. Mass in Source (t=0 Years) infinite(Kg)Contam. Mass in Source Now (t=30Years) Infinite(Kg) Current Volume of Groundwater in Plume 2.1(ac-ft) Flowrate of Water Through Source Zone 0.107(ac-ft/yr)250-250.0000.5001.0001.5002.0002.5003.0003.5004.0004.500055110165220275330385440495(ft)Concentration (mg/L)(ft)Recalculate No Degradation 1st Order Decay Instantaneous Plot All DataPlot Data > TargetMass HELP
BIOSCREEN Natural Attenuation Decision Support System Tomberline Grocery Data Input Instructions:
Air Force Center for Environmental Excellence Version 1.4 MTBE 115 1. Enter value directly....orRun Name 2. Calculate by filling in grey
1. HYDROGEOLOGY 5. GENERAL 0.02 cells below. (To restore
Seepage Velocity*Vs 20.7 (ft/yr)Modeled Area Length*550 (ft) formulas, hit button below).
or Modeled Area Width*50 (ft)Variable* Data used directly in model.
Hydraulic Conductivity K 1.2E-04 (cm/sec)Simulation Time* 30 (yr)20 Value calculated by model.Hydraulic Gradient i 0.05 (ft/ft) (Don't enter any data).
Porosity n 0.3 (-)6. SOURCE DATA
Source Thickness in Sat.Zone*15 (ft)
2. DISPERSION Source Zones:Longitudinal Dispersivity*alpha x 5.7 (ft)Width* (ft)Conc. (mg/L)*
Transverse Dispersivity*alpha y 0.6 (ft)5 0.003 1
Vertical Dispersivity*alpha z 0.0 (ft)5 0.027
or 30 2.73
Estimated Plume Length Lp 75 (ft)5 0.02750.003
3. ADSORPTION Source Halflife (see Help):
Retardation Factor*R 1.1 (-)Infinite Infinite (yr)View of Plume Looking Down
or Inst. React.1st Order
Soil Bulk Density rho 1.7 (kg/l)Soluble Mass infinite (Kg)Observed Centerline Concentrations at Monitoring Wells
Partition Coefficient Koc 17 (L/kg)In Source NAPL, Soil If No Data Leave Blank or Enter "0"
FractionOrganicCarbon foc 1.0E-3 (-)7. FIELD DATA FOR COMPARISON
Concentration (mg/L)2.73 .027 .003 .001 .0 .0 .0 .0 .0 .0 .0
4. BIODEGRADATION Dist. from Source (ft)0 10 65 120 175 230 285 340 395 450 505
1st Order Decay Coeff*lambda 3.5E-1 (per yr)
or 8. CHOOSE TYPE OF OUTPUT TO SEE:
Solute Half-Life t-half 2.00 (year)
or Instantaneous Reaction Model
Delta Oxygen*DO 2.2 (mg/L)
Delta Nitrate*NO3 0 (mg/L)
Observed Ferrous Iron*Fe2+0 (mg/L)
Delta Sulfate*SO4 0 (mg/L)
Observed Methane*CH4 0 (mg/L)
Vertical Plane Source: Look at Plume Cross-Section and Input Concentrations & Widths
for Zones 1, 2, and 3
L
W
or
oror
or
12
34
5
or
or
View Output
Paste Example Dataset
View Output Restore Formulas for Vs,
RUN CENTERLINE RUN ARRAY Help Recalculate This
DISSOLVED HYDROCARBON CONCENTRATION ALONG PLUME CENTERLINE (mg/L at Z=0)Distance from Source (ft)TYPE OF MODEL0 55 110 165 220 275 330 385 440 495 550No Degradation2.730 2.572 2.239 1.984 1.795 1.649 1.531 1.421 1.280 1.049 0.7151st Order Decay2.730 1.023 0.355 0.125 0.045 0.016 0.006 0.002 0.001 0.000 0.000Inst. Reaction2.730 2.571 2.221 1.936 1.714 1.538 1.391 1.252 1.065 0.751 0.292Field Data from Site2.730 0.027 0.003 0.001Time:30 Years0.0000.5001.0001.5002.0002.5003.0000 100 200 300 400 5006Concentration(mg/L)Distance From Source (ft)1st Order DecayInstantaneous ReactionNo DegradationField Data from SiteNext TimestepPrev TimestepCalculateAnimationRecalculate This Return to
DISSOLVED HYDROCARBON CONCENTRATION ALONG PLUME CENTERLINE (mg/L at Z=0)Distance from Source (ft)TYPE OF MODEL0 55 110 165 220 275 330 385 440 495 550No Degradation2.730 2.572 2.239 1.984 1.795 1.649 1.534 1.439 1.360 1.292 1.2331st Order Decay2.730 1.023 0.355 0.125 0.045 0.016 0.006 0.002 0.001 0.000 0.000Inst. Reaction2.730 2.571 2.221 1.936 1.714 1.538 1.395 1.275 1.174 1.087 1.010Field Data from Site2.730 0.027 0.003 0.001Time:100 Years0.0000.5001.0001.5002.0002.5003.0000 100 200 300 400 5006Concentration(mg/L)Distance From Source (ft)1st Order DecayInstantaneous ReactionNo DegradationField Data from SiteNext TimestepPrev TimestepCalculateAnimationRecalculate This Return to
TransverseDISSOLVED HYDROCARBON CONCENTRATIONS IN PLUME (mg/L at Z=0)Distance (ft) Distance from Source (ft)Model to Display:0 55 110 165 220 275 330 385 440 495 55025 0.003 0.288 0.512 0.636 0.709 0.752 0.776 0.781 0.750 0.647 0.46013 2.730 1.708 1.591 1.505 1.427 1.357 1.293 1.224 1.120 0.930 0.6410 2.730 2.572 2.239 1.984 1.795 1.649 1.531 1.421 1.280 1.049 0.715-13 2.730 1.708 1.591 1.505 1.4271.357 1.293 1.224 1.120 0.930 0.641-25 0.003 0.288 0.512 0.636 0.7090.752 0.776 0.781 0.750 0.647 0.460MASS5.9E+2 5.9E+2 5.8E+2 5.7E+2 5.5E+2 5.3E+2 5.1E+2 4.9E+2 4.5E+2 3.8E+2 2.6E+2FLUX(mg/day)Time:30YearsTarget Level: 0.005 mg/L Displayed Model: No DegradationPlume and Source Masses (Order-of-Magnitude Accuracy)Plume Mass if No Biodegradation6.5(Kg)- Actual Plume Mass6.5(Kg)= Plume Mass Removed by Biodeg0.0(Kg)0 %Change in Electron Acceptor/Byproduct Masses:Oxygen Nitrate Iron II Sulfate Methanena na na na na(Kg)Contam. Mass in Source (t=0 Years) infinite(Kg)Contam. Mass in Source Now (t=30Years) Infinite(Kg) Current Volume of Groundwater in Plume 3.8(ac-ft) Flowrate of Water Through Source Zone 0.107(ac-ft/yr)250-250.0000.5001.0001.5002.0002.5003.000055110165220275330385440495(ft)Concentration (mg/L)(ft)Recalculate No Degradation 1st Order Decay Instantaneous Plot All DataPlot Data > TargetMass HELP
TransverseDISSOLVED HYDROCARBON CONCENTRATIONS IN PLUME (mg/L at Z=0)Distance (ft) Distance from Source (ft)Model to Display:0 55 110 165 220 275 330 385 440 495 55025 0.003 0.000 0.162 0.285 0.358 0.400 0.422 0.421 0.371 0.221 0.00013 2.730 1.668 1.498 1.376 1.270 1.177 1.091 1.000 0.858 0.595 0.1940 2.730 2.571 2.221 1.936 1.714 1.538 1.391 1.252 1.065 0.751 0.292-13 2.730 1.668 1.498 1.376 1.2701.177 1.091 1.000 0.858 0.595 0.194-25 0.003 0.000 0.162 0.285 0.3580.400 0.422 0.421 0.371 0.221 0.000MASS5.9E+2 5.3E+2 5.0E+2 4.7E+2 4.5E+2 4.2E+2 4.0E+2 3.7E+2 3.2E+2 2.2E+2 6.1E+1FLUX(mg/day)Time:30YearsTarget Level: 0.005 mg/L Displayed Model: Inst. ReactionPlume and Source Masses (Order-of-Magnitude Accuracy)Plume Mass if No Biodegradation9.3(Kg)- Actual Plume Mass5.1(Kg)= Plume Mass Removed by Biodeg4.1(Kg)(45 %)Change in Electron Acceptor/Byproduct Masses:Oxygen Nitrate Iron II Sulfate Methane-13.0 +0.0 +0.0 +0.0 +0.0(Kg)Contam. Mass in Source (t=0 Years) infinite(Kg)Contam. Mass in Source Now (t=30Years) Infinite(Kg) Current Volume of Groundwater in Plume 3.5(ac-ft) Flowrate of Water Through Source Zone 0.107(ac-ft/yr)250-250.0000.5001.0001.5002.0002.5003.000055110165220275330385440495(ft)Concentration (mg/L)(ft)Recalculate No Degradation 1st Order Decay Instantaneous Plot All DataPlot Data > TargetMass HELP
TransverseDISSOLVED HYDROCARBON CONCENTRATIONS IN PLUME (mg/L at Z=0)Distance (ft) Distance from Source (ft)Model to Display:0 55 110 165 220 275 330 385 440 495 55025 0.003 0.114 0.081 0.040 0.018 0.008 0.003 0.001 0.000 0.000 0.00013 2.730 0.680 0.252 0.095 0.036 0.014 0.005 0.002 0.001 0.000 0.0000 2.730 1.023 0.355 0.125 0.045 0.016 0.006 0.002 0.001 0.000 0.000-13 2.730 0.680 0.252 0.095 0.0360.014 0.005 0.002 0.001 0.000 0.000-25 0.003 0.114 0.081 0.040 0.0180.008 0.003 0.001 0.000 0.000 0.000MASS5.9E+2 2.4E+2 9.2E+1 3.6E+1 1.4E+1 5.3E+0 2.0E+0 7.8E-1 3.0E-1 1.2E-1 4.2E-2FLUX(mg/day)Time:30YearsTarget Level: 0.005 mg/L Displayed Model: 1st Order DecayPlume and Source Masses (Order-of-Magnitude Accuracy)Plume Mass if No Biodegradation6.5(Kg)- Actual Plume Mass0.8(Kg)= Plume Mass Removed by Biodeg5.7(Kg)(87 %)Change in Electron Acceptor/Byproduct Masses:Oxygen Nitrate Iron II Sulfate Methanena na na na na(Kg)Contam. Mass in Source (t=0 Years) infinite(Kg)Contam. Mass in Source Now (t=30Years) Infinite(Kg) Current Volume of Groundwater in Plume 2.2(ac-ft) Flowrate of Water Through Source Zone 0.107(ac-ft/yr)250-250.0000.5001.0001.5002.0002.5003.000055110165220275330385440495(ft)Concentration (mg/L)(ft)Recalculate No Degradation 1st Order Decay Instantaneous Plot All DataPlot Data > TargetMass HELP
WithersRavenel
Our People. Your Success.

APPENDIX D 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.