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Home My WebLink AboutRA-978_6508_CA_RPTS_20221215_MRP 3502 Hayes Road • Monroe, North Carolina 28110 113 West Firetower Road, Suite G • Winterville, North Carolina 28590 Phone (704) 845-4010 • (888) 870-4133 • Fax (704) 845-4012 December 15, 2022 Mr. Jared Edwards North Carolina Department of Environmental Quality Washington Regional Office 943 Washington Square Mall Washington, North Carolina 27889 Re: Ground Water Monitoring Report December 2022 EP Mart #2 1300 Raleigh Road Rocky Mount, Edgecombe County North Carolina Facility ID Number: 0-00-0000025772 Incident Number: 6508 GRI Project Number: 2835 Dear Mr. Edwards, Please find enclosed the referenced report, for the abovementioned site. If you have any questions, please contact Rae Brown at 704-845-4010. Sincerely, Geological Resources, Inc. Leslie Maxtone-Graham Administrative Assistant Enclosure Cc: Eastern Petroleum Corporation, file 3502 Hayes Road • Monroe, North Carolina 28110 113 West Firetower Road, Suite G • Winterville, North Carolina 28590 Phone (704) 845-4010 • (888) 870-4133 • Fax (704) 845-4012 Ground Water Monitoring Report December 2022 EP Mart #2 1300 Raleigh Road Rocky Mount, Edgecombe County North Carolina Facility ID Number: 0-00-00000025772 Incident Number: 6508 GRI Project Number: 2835 Prepared for: Eastern Petroleum Corporation Post Office Box 398 Enfield, North Carolina 27823 December 15, 2022 Rae Troiano Brown, P. G. Project Manager Sharon Lowther Report Writer ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Ground Water Monitoring Report Prepared on: December 15, 2022 EP Mart #2 Project Manager: Rae Troiano Brown, P. G. GRI Project No. 2835 i SITE INFORMATION 1. Site Identification  EP Mart #2 (Facility ID 0-00-00000025772)  Incident Number 6508 – Intermediate Risk (I140D)  Location of Source Area: 1300 Raleigh Road Rocky Mount, NC 27803 Edgecombe County 35.944083°N, 77.776222°W (Topographical Map) 2. Information about Contacts Associated with the Leaking UST System UST Owner Eastern Petroleum Corporation Post Office Box 398 Enfield, NC 27823 yjones@epmart.com 252-445-6606 UST Operator Eastern Petroleum Corporation Post Office Box 398 Enfield, NC 27823 yjones@epmart.com 252-445-6606 Property Owner Audrey Shearin, Trustee Post Office Box 398 Enfield, NC 27823 yjones@epmart.com 252-445-3634 Property Occupant EP Mart #2 1300 Raleigh Road Rocky Mount, NC 27803 yjones@epmart.com 252-445-6606 Consultant/Contractor Geological Resources, Inc. 3502 Hayes Road Monroe, NC 28110 rtb@geologicalresourcesinc.com 704-845-4010 Analytical Laboratory Waypoint Analytical. 449 Springbrook Road Charlotte, NC 28217 State Certification No. 402 704-529-6364 3. Information about Release  Release was discovered on March 25, 1991.  An unknown amount of product was released from the leaking UST System.  One 12,000-gallon gasoline, one 10,000-gallon gasoline, and one 8,000-gallon gasoline USTs are currently in operation at the site. ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Ground Water Monitoring Report Prepared on: December 15, 2022 EP Mart #2 Project Manager: Rae Troiano Brown, P. G. GRI Project No. 2835 ii EXECUTIVE SUMMARY EP Mart #2 is located at 1300 Raleigh Road in Rocky Mount, Edgecombe County, North Carolina. The site is currently owned and operated by Eastern Petroleum Corporation as a petroleum retail facility. A release was discovered at the site in March 1991. Currently, one 12,000-gallon gasoline, one 10,000-gallon gasoline, and one 8,000-gallon gasoline USTs are active at the site. The adjoining properties are a mixture of general commercial properties. Public water is available to the site and surrounding properties within a 1,500-foot radius of the site. According to the UST Section Database, a release was reported at the site in March 1991. Subsequently, a Comprehensive Site Assessment and Corrective Action Plan were submitted. A pump and treat remediation system was installed at the site but has not been in operation since prior to 2008. On December 1, 2022, eight monitoring wells (MW-1 through MW-4, MW-8, MW-13, MW-23, and MW- 26) were gauged, purged, and sampled. Concentrations of benzene, ethylbenzene, xylenes, MTBE, and/or naphthalene that exceeded the MACs were reported in the ground water samples collected from MW-2, MW-3, MW-4, MW-8, MW-13, MW-23, and MW-26. The concentration of benzene reported in MW-3 exceeded the GCL. Based on this information, ground water sampling should be continued. The next sampling event is scheduled for June 2023. ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Ground Water Monitoring Report Prepared on: December 15, 2022 EP Mart #2 Project Manager: Rae Troiano Brown, P. G. GRI Project No. 2835 ACRONYMS ACM: Asbestos Containing Materials AFVR: Aggressive Fluid-Vapor Recovery ARR: Acknowledgement of Report Receipt AS: Air Sparging AST: Aboveground Storage Tank ASTM: American Society for Testing and Materials BGS: Below Ground Surface CAP: Corrective Action Plan CFR: Code of Federal Regulations CSA: Comprehensive Site Assessment DPE: Dual Phase Extraction DRO: Total Petroleum Hydrocarbons Diesel Range Organics DWM: Division of Waste Management DWR: Department of Water Resources EPA: Environmental Protection Agency EPH: Extractible Petroleum Hydrocarbons ESA: Environmental Site Assessment GCL: Gross Contamination Level GRI: Geological Resources, Inc. GRO: Total Petroleum Hydrocarbons Gasoline Range Organics LSA: Limited Site Assessment MAC: Maximum Allowable Concentration as specified in T15A NCAC 2L.0202 MADEP: Massachusetts Department of Environmental Protection MCC: Maximum Contaminant Concentrations MMPE: Mobile Multi-Phase Extraction NCDEQ: North Carolina Department of Environmental Quality NCDOT: North Carolina Department of Transportation NFA: Notice of No Further Action NORR: Notice of Regulatory Requirements NOV: Notice of Violation NPDES: National Pollutant Discharge Elimination System NRP: Notice of Residual Petroleum O&M: Operation and Maintenance PAHs: Polynuclear Aromatic Hydrocarbons PCA: Pre-Construction Assessment RAL: Regulatory Action Level SCLs: Soil Cleanup Level SPCC: Spill Prevention Control and Countermeasures SVE: Soil Vapor Extraction SVOCs: Semi-Volatile Organic Compounds SWPPP: Stormwater Pollution Prevention Plan TCLP: Toxicity Characteristic Leaching Procedure (EPA Method SW-846 1311) TOC: Top of Casing TPH: Total Petroleum Hydrocarbons USGS: United States Geological Survey UST: Underground Storage Tank UVF: Ultraviolet Fluorescence VOCs: Volatile Organic Compounds VPH: Volatile Petroleum Hydrocarbons ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Ground Water Monitoring Report Prepared on: December 15, 2022 EP Mart #2 Project Manager: Rae Troiano Brown, P. G. GRI Project No. 2835 TABLE OF CONTENTS SITE INFORMATION ............................................................................................................................ i EXECUTIVE SUMMARY ....................................................................................................................... ii 1.0 SITE HISTORY AND CHARACTERIZATION ...................................................................................1 2.0 PRESENTATION OF CURRENT SITE ASSESSMENT INFORMATION/ COMPARISON TO HISTORICAL ASSESSMENT INFORMATION ...................................................................................................1 3.0 FREE PRODUCT REMOVAL ........................................................................................................3 4.0 NATURAL ATTENUATION / NATURAL SOURCE ZONE DEPLETION STATUS ..................................4 5.0 CONCLUSIONS .........................................................................................................................4 6.0 LIMITATIONS ...........................................................................................................................4 7.0 STATEMENTS AND CERTIFICATION ...........................................................................................4 FIGURES Figure 1: Site Location Map Figure 2: Site Map Figure 3: Water Table Surface Map Figure 4: Ground Water Quality Map Figure 5: Estimated Contaminant Mass Area Map TABLES Table 1: UST Owner and Operator Information Table 2: UST System Information Table 3: Well Construction and Gauging Information Table 4: Summary of Ground Water Sample Analytical Results APPENDICES Appendix A: State Correspondence Appendix B: Laboratory Report – Ground Water Samples Appendix C: Contaminant Mass Calculations ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Ground Water Monitoring Report Prepared on: December 15, 2022 EP Mart #2 Project Manager: Rae Troiano Brown, P. G. GRI Project No. 2835 1 1.0 SITE HISTORY AND CHARACTERIZATION Geological Resources, Inc. (GRI) presents the results of the December 2022 ground water sampling event at the EP Mart #2 site; located at 1300 Raleigh Road in Rocky Mount, Edgecombe County, North Carolina (Figures 1 and 2). These activities were conducted in accordance with GRI Proposal No. 22-632, which was submitted to the NCDEQ on September 14, 2022, and was approved as Task Authorization No. 6508- 32 on September 21, 2022. State correspondence has been included as Appendix A. The site is currently owned and operated by Eastern Petroleum Corporation as a petroleum retail facility. Currently, one 12,000-gallon gasoline, one 10,000-gallon gasoline, and one 8,000-gallon gasoline UST are active at the site. UST owner/operator information and UST system information are included as Tables 1 and 2, respectively. The Registered Tank Report is shown below: The site and surrounding area is a mixture of general commercial properties. The site contains one building and is primarily capped with concrete and asphalt. The overall topography at the site is relatively flat. No surface water bodies were identified within a 500-foot radius of the site. Municipal water is available to the site and surrounding areas. The site risk has been classified as intermediate because free product is present or GCLs are less than reported ground water quality. 2.0 PRESENTATION OF CURRENT SITE ASSESSMENT INFORMATION/ COMPARISON TO HISTORICAL ASSESSMENT INFORMATION On December 1, 2022, eight Type II monitoring wells (MW-1 through MW-4, MW-8, MW-13, MW-23, and MW-26) were gauged, purged, and sampled. Depths to ground water in the Type II monitoring wells ranged from 10.07 feet to 13.41 feet. Ground water elevations in the Type II monitoring wells ranged from 86.29 feet to 87.82 feet. Ground water flow for the Type II monitoring wells was generally toward the east. The horizontal hydraulic gradient across the site from MW-4 to MW-26 was approximately 0.01 ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Ground Water Monitoring Report Prepared on: December 15, 2022 EP Mart #2 Project Manager: Rae Troiano Brown, P. G. GRI Project No. 2835 2 feet per foot. Well construction and gauging information is presented in Table 3. A Water Table Surface Map is included as Figure 3. A summary of the current ground water gauging data is shown below: Well ID Screened Interval (x to y ft. BGS) Bottom of Well (ft. BGS) Top of Casing Elevation (ft.) Depth to Water from Top of Casing (ft.) Free Product Thickness (ft.) Ground Water Elevation (ft.) MW-1 12-22 22 100.10 13.35 0.00 86.75 MW-2 12-22 22 99.5 12.99 0.00 86.51 MW-3 9.5-19.5 19.5 99.7 13.41 0.00 86.29 MW-4 9.5-19.5 19.5 98.64 10.82 0.00 87.82 MW-8 5-15 15 96.52 10.07 0.00 86.45 MW-13 10-20 20 98.47 12.15 0.00 86.32 MW-23 5-15 15 97.26 10.08 0.00 87.18 MW-26 9-19 19 97.63 11.21 0.00 86.42 Ground water samples collected from the monitoring wells were submitted for laboratory analyses using EPA Method 602. Concentrations of benzene, ethylbenzene, xylenes, MTBE, and/or naphthalene that exceeded the MACs were reported in the ground water samples collected from MW-2, MW-3, MW-4, MW-8, MW-13, MW-23, and MW-26. The concentration of benzene reported in MW-3 exceeded the GCL. A summary of the analytical results for ground water samples collected on December 1, 2022 is presented in Table 4. A Ground Water Quality Map based on the December 2022 data is included as Figure 4. A complete report of laboratory analyses of the ground water samples collected during the December 2022 sampling event has been included as Appendix B. A summary of the current ground water analytical data is shown below: Contaminant of Concern  Benzene Toluene Ethylbenzene Xylenes MTBE Naphthalene Well ID 2L Standard (µg/l) (MAC) 1 600 600 500 20 6 GCL (µg/l) 5,000 260,000 80,000 50,000 20,000 6,000 MW-1 <0.180 <0.220 <0.170 <0.210 1.17 <0.470 MW-2 286 9.98 39.7 42.4 50.2 10.1 MW-3 8,630 72.1 874 331 627 130 MW-4 2,000 37.5 J 1,240 220 J <14.0 660 MW-8 3,020 132 277 406 J 62.8 J 206 MW-13 1,690 37.1 27.4 129 224 23.2 MW-23 263 15 8.03 31.6 66.6 <4.70 MW-26 5.74 1.48 0.463 J 2.48 3.58 1.07 ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Ground Water Monitoring Report Prepared on: December 15, 2022 EP Mart #2 Project Manager: Rae Troiano Brown, P. G. GRI Project No. 2835 3 The baseline contaminant mass at the site was determined based on the total BTEX, MTBE and naphthalene concentrations as well as the maximum historical water column height from the 2011 water sampling event. A theoretical contaminant mass area was calculated around MW-3, MW-4, MW-8 and MW-13 and used in the contaminant mass calculations. The total contaminant mass at the site has decreased 97% since 2011. Contaminant mass calculations have been included as Appendix C. A map of the contaminant mass areas has been included as Figure 5. A chart depicting the overall trend in contaminant mass is shown below: The site is located in the Coastal Plain Physiographic Province of North Carolina. The water table for wells installed to 15 to 20 feet below grade has a seasonal high depth to water of approximately 8 to 14 feet bgs. 3.0 FREE PRODUCT REMOVAL Free product has been reported in MW-4 at the site. A treatment system operated at the site until prior to 2008. MMPE events were conducted from 2010 until 2013. No free product was measured during the December 2022 sampling event. 6.00 6.50 7.00 7.50 8.00 8.50 0 50,000 100,000 150,000 200,000 250,000 Average Water Column Height (ft)Contaminant Mass (grams)Time Total Contaminant Mass vs. Time EP MART #2 (Incident No. 6508) Contaminant Mass (grams)Water Column Height (ft)Linear (Contaminant Mass (grams)) ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Ground Water Monitoring Report Prepared on: December 15, 2022 EP Mart #2 Project Manager: Rae Troiano Brown, P. G. GRI Project No. 2835 4 4.0 NATURAL ATTENUATION / NATURAL SOURCE ZONE DEPLETION STATUS No natural attenuation monitoring plan is currently in place at the site. 5.0 CONCLUSIONS  On December 1, 2022, eight Type II monitoring wells were gauged, purged, and sampled. Ground water flow was generally toward the east with a horizontal gradient of approximately 0.01 feet per foot.  Concentrations of benzene, ethylbenzene, xylenes, MTBE, and/or naphthalene that exceeded the MACs were reported in the ground water samples collected from MW-2, MW-3, MW-4, MW-8, MW-13, MW-23, and MW-26. The concentration of benzene reported in MW-3 exceeded the GCL.  Based on this information, ground water sampling should be continued. The next sampling event is scheduled for June 2023. 6.0 LIMITATIONS This report has been prepared for the exclusive use of Eastern Petroleum Corporation for specific application to the referenced site in Edgecombe County, North Carolina. The assessment was conducted based on the scope of work and level of effort desired by NCDEQ and with resources adequate only for that scope of work. Our findings have been developed in accordance with generally accepted standards of environmental practices in the State of North Carolina, available information, and our professional judgment. No other warranty is expressed or implied. The data that are presented in this report are indicative of conditions that existed at the precise locations sampled and at the time the samples were collected. In addition, the data obtained from samples would be interpreted as being meaningful with respect to parameters indicated in the laboratory report. No additional information can logically be inferred from these data. 7.0 STATEMENTS AND CERTIFICATION 1 Enter the date the monitoring report was due. N/A Will this report be submitted after the established due date? YES NO 2 Was any required information from the above template missing from this report? YES NO IF the answer to question #1 or# 2 is “YES”, please provide additional information in this cell to explain what was missing and why. 3 If applicable, will any of the proposed attenuation milestones under the schedule approved in the Corrective Action Plan not be met? (within a reasonable margin of error) YES NO ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Ground Water Monitoring Report Prepared on: December 15, 2022 EP Mart #2 Project Manager: Rae Troiano Brown, P. G. GRI Project No. 2835 5 IF the answer to question #3 is “NO”, skip to the certification under #8 below. IF the answer to question #3 is “YES”, please generally describe in this cell the possible reason(s) and outline proposed remedies. (This should be described in more detail in the report text above.) N/A 4 Does any known or suspected source zone soil contamination or free product remain outside of the assessed area that could be inhibiting natural attenuation? YES NO 5 Has there been an unexpected increase in contaminant mass sufficient to suggest a potential new release from a separate onsite or offsite source? YES NO IF the answer to either question #4 or #5 is “YES”, generally describe in this cell any actions recommended to further assess or clean up this known or suspected source. (This should be described in more detail in the report text above.) 6 Certification: I, Rae Troiano Brown, a Licensed Geologist for Geological Resources, Inc., do certify that the information contained in this report is correct and accurate to the best of my knowledge. Geological Resources, Inc. is licensed to practice engineering and geology in North Carolina. The certification number of the company or corporation is C-2727/C-127. FIGURES SITE LOCATIONFigure 1 Site Location EP Mart #21211 E Raleigh RoadRocky Mount, North CarolinaEdgecombe County Incident No. 6508GRI Project No. 2835500 M2000 FTDate: 10/19/2022 Location: 35.944565° N -77.775609° W Dad TABLES UST ID Number 1 - 3 Facility ID Number Owner or Operator? Owner/operator TABLE 1 UST OWNER/OPERATOR INFORMATION EP MART #2 (INCIDENT NO. 6508) 00-0-0000025772 Name of Owner or Operator Dates of Ownership / Operation Eastern Petroleum Corporation 9/24/1977 - present Address Telephone Number PO Box 398, Enfield NC 27823 252-445-6606 Page 1 of 1 Was Release Associated with UST System? (Yes / No) 1 Gasoline Gasoline 12,000 1977 Steel 8' x 32'FRP Active Yes 2 Gasoline Gasoline 10,000 1977 Steel 8' x 26' 8''FRP Active Yes 7 Gasoline Gasoline 8,000 1977 Steel 8' x 21' 4"Steel Active No Construction Details Tank Dimensions Description of Associated Product Piping and Pumps Status of UST TABLE 2 UST SYSTEM INFORMATION EP MART #2 (INCIDENT NO. 6508) Date: 10/10/19 Facility ID # : 00-0-0000025772 UST ID No. Current or Most Recent Contents Previous Contents Capacity (gallons) Date Installed Page 1 of 1 Date: 12/09/22 05/03/10 11.75 0.00 88.35 07/19/11 12.03 0.00 88.07 06/11/12 11.82 0.00 88.28 02/18/13 12.54 0.00 87.56 11/25/13 13.08 0.00 87.02 05/17/17 11.92 0.00 88.18 04/04/18 11.97 0.00 88.13 08/01/19 12.42 0.00 87.68 08/07/20 12.55 0.00 87.55 12/28/21 13.01 0.00 87.09 06/06/22 12.45 0.00 87.65 12/01/22 13.35 0.00 86.75 05/05/09 12.01 0.00 87.49 05/03/10 11.83 0.00 87.67 07/19/11 11.97 0.00 87.53 05/07/12 12.01 0.00 87.49 Before MMPE 05/11/12 12.73 0.00 86.77 After MMPE 06/11/12 11.88 0.00 87.62 01/07/13 12.78 0.00 86.72 Before MMPE 01/11/13 13.93 0.00 85.57 After MMPE 02/18/13 12.45 0.00 87.05 09/23/13 12.45 0.00 87.05 Before MMPE 09/27/13 12.84 0.00 86.66 After MMPE 11/25/13 12.90 0.00 86.60 05/17/17 11.83 0.00 87.67 04/04/18 11.81 0.00 87.69 08/01/19 12.20 0.00 87.30 08/07/20 11.86 0.00 87.64 12/28/21 12.82 0.00 86.68 06/06/22 12.22 0.00 87.28 12/01/22 12.99 0.00 86.51 05/05/09 12.44 0.00 87.26 05/03/10 12.29 0.00 87.41 07/19/11 12.36 0.00 87.34 05/07/12 13.02 0.00 86.68 Before MMPE 05/11/12 13.14 0.00 86.56 After MMPE 06/11/12 12.31 0.00 87.39 01/07/13 13.19 0.00 86.51 Before MMPE 01/11/13 14.27 0.00 85.43 After MMPE 02/18/13 12.82 0.00 86.88 09/23/13 11.85 0.00 87.85 Before MMPE 09/27/13 15.63 0.00 84.07 After MMPE 11/25/13 13.33 0.00 86.37 05/17/17 12.27 0.00 87.43 04/04/18 12.25 0.00 87.45 08/01/19 12.65 0.00 87.05 08/07/20 12.27 0.00 87.43 12/28/21 13.24 0.00 86.46 06/06/22 12.66 0.00 87.04 12/01/22 13.41 0.00 86.29 MW-1 NA 12 12-22 22 100.10 MW-2 NA 12 12-22 22 99.50 TABLE 3 WELL CONSTRUCTION AND GAUGING INFORMATION EP MART #2 (INCIDENT NO. 6508) Comments Free Product Thickness** (ft.) Ground Water Elevation (ft.)Well ID Screened Interval (x to y ft. BGS) Depth to Water from Top of Casing (ft.) Bottom of Well (ft. BGS) Top of Casing Elevation* (ft.) Date Installed (mm/dd/yy) Date Water Level Measured (mm/dd/yy) Well Casing Depth (ft. BGS) Facility ID#: 00-0-0000025772 19.5 99.70MW-3 NA 9.5 9.5-19.5 Page 1 of 4 Date: 12/09/22 TABLE 3 WELL CONSTRUCTION AND GAUGING INFORMATION EP MART #2 (INCIDENT NO. 6508) Comments Free Product Thickness** (ft.) Ground Water Elevation (ft.)Well ID Screened Interval (x to y ft. BGS) Depth to Water from Top of Casing (ft.) Bottom of Well (ft. BGS) Top of Casing Elevation* (ft.) Date Installed (mm/dd/yy) Date Water Level Measured (mm/dd/yy) Well Casing Depth (ft. BGS) Facility ID#: 00-0-0000025772 05/05/09 10.78 0.20 88.03 05/03/10 10.72 0.22 88.11 07/19/11 10.68 0.10 88.05 05/07/12 10.51 0.11 88.22 05/11/12 11.98 0.00 86.66 06/11/12 10.53 0.00 88.11 01/07/13 11.43 0.13 87.32 Before MMPE 01/11/13 12.77 0.00 85.87 After MMPE 02/18/13 11.00 0.00 87.64 09/23/13 11.11 0.00 87.53 Before MMPE 09/27/13 14.21 0.00 84.43 After MMPE 11/25/13 11.57 0.00 87.07 05/17/17 7.32 0.00 91.32 04/04/18 7.44 0.00 91.20 08/01/19 8.32 0.00 90.32 08/07/20 8.23 0.00 90.41 12/28/21 10.88 0.00 87.76 06/06/22 10.71 0.00 87.93 12/01/22 10.82 0.00 87.82 MW-7 NA 07/19/11 5 5.-15 15 93.4 NM NM NM Not found 05/05/09 9.25 0.00 87.27 05/03/10 9.10 0.00 87.42 07/19/11 9.17 0.00 87.35 05/07/12 9.25 0.00 87.27 Before MMPE 05/11/12 11.45 0.00 85.07 After MMPE 06/11/12 9.17 0.00 87.35 01/07/13 9.92 0.00 86.60 Before MMPE 01/11/13 11.80 0.00 84.72 After MMPE 02/18/13 9.62 0.00 86.90 09/23/13 9.60 0.00 86.92 Before MMPE 09/27/13 11.35 0.00 85.17 After MMPE 11/25/13 9.91 0.00 86.61 05/17/17 9.07 0.00 87.45 04/04/18 9.03 0.00 87.49 08/01/19 9.49 0.00 87.03 08/07/20 9.15 0.00 87.37 12/28/21 9.92 0.00 86.60 06/06/22 9.41 0.00 87.11 12/01/22 10.07 0.00 86.45 07/19/11 9.55 0.00 88.23 06/11/12 9.49 0.00 88.29 02/18/13 10.04 0.00 87.74 11/25/13 10.50 0.00 87.28 07/19/11 9.42 0.00 89.28 06/11/12 9.25 0.00 89.45 02/18/13 9.97 0.00 88.73 11/25/13 10.51 0.00 88.19 MW-12 NA 07/19/11 14 14-24 24 101.91 NM NM NM Not found 97.782010-2010NAMW-10 10NAMW-11 98.72010-20 MW-8 NA 5 5-15 15 96.52 MW-4 9.5 9.5-19.5 19.5 98.64NA Page 2 of 4 Date: 12/09/22 TABLE 3 WELL CONSTRUCTION AND GAUGING INFORMATION EP MART #2 (INCIDENT NO. 6508) Comments Free Product Thickness** (ft.) Ground Water Elevation (ft.)Well ID Screened Interval (x to y ft. BGS) Depth to Water from Top of Casing (ft.) Bottom of Well (ft. BGS) Top of Casing Elevation* (ft.) Date Installed (mm/dd/yy) Date Water Level Measured (mm/dd/yy) Well Casing Depth (ft. BGS) Facility ID#: 00-0-0000025772 07/19/11 11.13 0.00 87.34 05/07/12 11.16 0.00 87.31 Before MMPE 05/11/12 12.54 0.00 85.93 After MMPE 06/11/12 11.07 0.00 87.40 01/07/13 11.98 0.00 86.49 Before MMPE 01/11/13 13.02 0.00 85.45 After MMPE 02/18/13 11.67 0.00 86.80 09/23/13 11.63 0.00 86.84 Before MMPE 09/27/13 12.95 0.00 85.52 After MMPE 11/25/13 12.04 0.00 86.43 05/17/17 10.98 0.00 87.49 04/04/18 11.03 0.00 87.44 08/01/19 11.71 0.00 86.76 08/07/20 11.13 0.00 87.34 12/28/21 11.98 0.00 86.49 06/06/22 11.38 0.00 87.09 12/01/22 12.15 0.00 86.32 07/19/11 10.06 0.00 86.41 06/11/12 9.93 0.00 86.54 02/18/13 10.44 0.00 86.03 11/25/13 10.82 0.00 85.65 MW-15 NA 07/19/11 NA NA NA NA NM NM NM Abandoned MW-16 NA 07/19/11 10 10-20 20 95.89 NM NM NM Not found 07/19/11 NM NM NM Not found 11/25/13 9.72 0.00 85.73 07/19/11 8.00 0.00 86.51 06/11/12 7.77 0.00 86.74 02/18/13 9.30 0.00 85.21 11/25/13 8.82 0.00 85.69 07/19/11 9.45 0.00 85.46 06/11/12 9.45 0.00 85.46 02/18/13 9.61 0.00 85.30 11/25/13 9.81 0.00 85.10 07/19/11 12.12 0.00 85.27 06/11/12 12.04 0.00 85.35 02/18/13 12.54 0.00 84.85 11/25/13 12.65 0.00 84.74 07/19/11 10.03 0.00 87.62 05/07/12 10.05 0.00 87.60 Before MMPE 05/11/12 12.96 0.00 84.69 After MMPE 06/11/12 10.09 0.00 87.56 01/07/13 11.05 0.00 86.60 Before MMPE 01/11/13 13.01 0.00 84.64 After MMPE 02/18/13 10.80 0.00 86.85 09/23/13 10.46 0.00 87.19 Before MMPE 09/27/13 12.57 0.00 85.08 After MMPE 11/25/13 10.83 0.00 86.82 MW-18 MW-20 97.65155-155NAMW-22 155-155 MW-19 NA 10NA NA 94.512010-20 97.39 MW-17 96.472010-20 95.4520 NA 10-2010NA 10MW-14 94.91133-133 MW-13 NA 10 10-20 20 98.47 Page 3 of 4 Date: 12/09/22 TABLE 3 WELL CONSTRUCTION AND GAUGING INFORMATION EP MART #2 (INCIDENT NO. 6508) Comments Free Product Thickness** (ft.) Ground Water Elevation (ft.)Well ID Screened Interval (x to y ft. BGS) Depth to Water from Top of Casing (ft.) Bottom of Well (ft. BGS) Top of Casing Elevation* (ft.) Date Installed (mm/dd/yy) Date Water Level Measured (mm/dd/yy) Well Casing Depth (ft. BGS) Facility ID#: 00-0-0000025772 07/19/11 9.96 0.00 87.30 06/11/12 10.04 0.00 87.22 02/18/13 10.38 0.00 86.88 11/25/13 10.46 0.00 86.80 05/17/17 9.97 0.00 87.29 04/04/18 10.05 0.00 87.21 08/01/19 10.23 0.00 87.03 08/07/20 10.01 0.00 87.25 12/28/21 10.52 0.00 86.74 12/01/22 10.08 0.00 87.18 MW-24 NA 07/19/11 9 9-19 19 101.34 NM NM NM Not found 07/19/11 11.45 0.00 88.97 06/11/12 10.89 0.00 89.53 02/18/13 11.82 0.00 88.60 11/25/13 12.60 0.00 87.82 07/19/11 10.20 0.00 87.43 06/11/12 10.05 0.00 87.58 02/18/13 10.65 0.00 86.98 11/25/13 11.08 0.00 86.55 05/17/17 10.04 0.00 87.59 04/04/18 10.07 0.00 87.56 08/01/19 10.44 0.00 87.19 08/07/20 10.14 0.00 87.49 12/28/21 11.04 0.00 86.59 06/06/22 10.42 0.00 87.21 12/01/22 11.21 0.00 86.42 07/19/11 12.18 0.00 89.14 06/11/12 11.54 0.00 89.78 02/18/13 12.46 0.00 88.86 11/25/13 13.24 0.00 88.08 07/19/11 12.30 0.00 87.38 06/11/12 12.10 0.00 87.58 02/18/13 12.73 0.00 86.95 11/25/13 13.18 0.00 86.50 Notes: • * : Reference point for elevation measurements; Datum established by previous consultant. • ** : If free product is present in a well, groundwater elevation calculated by: [Top of Casing Elevation - Depth to Water] + [free product thickness x 0.8581]. • ft BGS : feet below ground surface. • NA: Not available. • Top-of-casing elevations and well construction information is reproduced from the report entitled 'Corrective Action Monitoring Report April-June 2003', dated August 13, 2003, prepared by CBM Engineering, Inc. • NM: Not monitored. 199-199NAMW-25 100.42 MW-26 NA 9 9-19 19 97.63 MW-23 NA 5 5-15 15 97.26 99.683934-3934NADW-1 101.32199-199NAMW-27 Page 4 of 4 Date: 12/12/2022 Well ID Date Collected (mm/dd/yy) 1 600 600 500 20 6 5,000 260,000 80,000 50,000 20,000 6,000 07/20/11 6.7 0.49 J 0.15 J 2.1 48.0 0.32 J 06/11/12 <0.13 <0.13 <0.15 <0.30 4.2 <0.10 02/18/13 0.87 <0.10 <0.10 0.56 J 17.3 <0.15 11/25/13 61.1 7.8 1.1 18.8 47.6 1.7 05/17/17 <0.13 <0.13 <0.13 <0.25 2.2 <0.13 04/04/18 <0.13 <0.13 <0.13 <0.25 1.6 <0.13 08/01/19 <0.13 <0.13 <0.13 <0.25 1.2 <0.13 08/07/20 <0.13 0.23 J <0.13 <0.25 0.45 J <0.13 12/18/21 <0.13 <0.13 <0.13 <0.25 0.91 <0.13 06/06/22 <0.180 <0.220 <0.170 <0.210 0.279 J <0.470 12/01/22 <0.180 <0.220 <0.170 <0.210 1.17 <0.470 07/20/11 4,670 412 992 1,760 729 374 06/11/12 3,180 3,570 1,200 3,070 467 405 02/18/13 7,250 8,120 1,960 6,370 499 584 11/25/13 4,210 3,280 1,340 4,460 348 430 05/17/17 366 34.9 92.8 118 81.0 97.1 04/04/18 2,270 338 161 449 448 128 08/01/19 617 24.3 49.3 99.5 115 38.7 08/07/20 123 7.6 23.1 31.2 44.1 34.7 12/18/21 1,410 26.4 41.1 63.8 J 164 <6.3 06/06/22 905 68 146 212 171 20.1 12/01/22 286 9.98 39.7 42.4 50.2 10.1 07/20/11 14,600 11,000 2,360 6,340 6,590 567 06/11/12 14,400 10,400 2,040 5,300 5,270 451 02/18/13 13,700 8,140 2,150 5,380 5,970 674 11/25/13 13,200 10,000 1,760 4,800 5,180 450 05/17/17 12,400 5,260 2,060 6,260 5,010 557 04/04/18 10,500 1,310 1,650 4,680 5,100 579 08/01/19 8,640 270 1,450 2,150 2,020 325 08/07/20 11,600 411 1,780 3,110 2,480 473 12/18/21 5,610 48.3 J 563 154 J 231 60.2 J 06/06/22 7,210 369 1,460 1,310 1,350 319 12/01/22 8,630 72.1 874 331 627 130 07/20/11 FP FP FP FP FP FP 06/11/12 <6.5 476 1,150 7,010 <6.5 448 02/18/13 15.9 340 1,010 6,470 <1.0 534 11/25/13 282 156 782 3,030 35.8 553 05/17/17 0.26 J 0.46 J 31.2 51.5 <0.13 57.3 04/04/18 0.36 J 0.41 J 36.8 25.1 <0.13 50.7 08/01/19 0.29 J <0.13 20.7 7.1 <0.13 46.2 08/07/20 7,190 8,380 1,270 6,670 <31 392 12/18/21 1,830 15.3 J 1,400 640 <6.3 494 06/06/22 2,230 36.3 1,580 1,060 J <1.40 641 12/01/22 2,000 37.5 J 1,240 220 J <14.0 660 07/20/11 16,200 14,100 2,990 16,500 791 1,530 06/11/12 10,400 19,100 4,260 18,100 221 1,480 02/18/13 9,010 2,060 1,030 4,260 194 253 11/25/13 8,830 4,060 1,360 7,500 138 587 05/17/17 5,470 223 438 1,350 71.2 202 04/04/18 7,500 1,260 929 3,070 96.4 490 08/01/19 6,300 62.9 J 178 195 J 60.9 J 34.6 J 08/07/20 6,110 255 875 1,840 <31 251 12/18/21 2,850 59.4 62.6 87.7 J <13 <13 06/06/22 4,190 173 228 486 62.2 J <47.0 12/01/22 3,020 132 277 406 J 62.8 J 206 MW-8 MW-4 MW-3 MW-2 MW-1 Facility ID#: 00-0-0000025772 SM 6200B 2L Standard (µg/l) (MAC) GCL (µg/l) TABLE 4 SUMMARY OF GROUND WATER SAMPLE ANALYTICAL RESULTS EP MART (Incident No. 6508)Methyl-tert-butyl ether(MTBE)NaphthaleneAnalytical Method Contaminant of Concern BenzeneTolueneEthylbenzeneTotal XylenesPage 1 of 3 Date: 12/12/2022 Well ID Date Collected (mm/dd/yy) 1 600 600 500 20 6 5,000 260,000 80,000 50,000 20,000 6,000 Facility ID#: 00-0-0000025772 SM 6200B 2L Standard (µg/l) (MAC) GCL (µg/l) TABLE 4 SUMMARY OF GROUND WATER SAMPLE ANALYTICAL RESULTS EP MART (Incident No. 6508)Methyl-tert-butyl ether(MTBE)NaphthaleneAnalytical Method Contaminant of Concern BenzeneTolueneEthylbenzeneTotal Xylenes07/20/11 <0.13 <0.13 <0.15 <0.30 1.5 <0.10 06/11/12 <0.13 <0.13 0.45 J <0.30 1.1 <0.10 02/18/13 0.14 J <0.10 <0.10 <0.22 0.75 <0.15 11/25/13 <0.10 <0.10 <0.10 <0.22 1.2 <0.15 07/20/11 <0.13 <0.13 <0.15 <0.30 <0.13 <0.10 06/11/12 <0.13 <0.13 <0.15 <0.30 <0.13 <0.10 02/18/13 <0.10 <0.10 <0.10 <0.22 <0.10 <0.15 11/25/13 <0.10 <0.10 <0.10 <0.22 <0.10 <0.15 07/20/11 7,170 168 136 527 711 129 J 06/11/12 4,780 660 247 1,030 327 72.8 02/18/13 7,580 419 149 593 530 39.6 J 11/25/13 8,270 143 123 J 520 576 <37 05/17/17 3,830 142 180 491 154 19.9 J 04/04/18 2,130 60.4 95.2 196 126 30.7 08/01/19 4,130 68.9 48.6 J 256 136 <13 08/07/20 5,190 104 87.3 J 205 J 157 <25 12/18/21 4,040 36.8 J 77.9 205 240 <13 06/06/22 3,400 61.7 68.4 240 J 213 <47.0 12/01/22 1,690 37.1 27.4 129 224 23.2 07/20/11 <0.13 <0.13 <0.15 <0.30 0.30 J <0.10 06/11/12 <0.13 <0.13 <0.15 <0.30 0.18 J <0.10 02/18/13 <0.10 <0.10 <0.10 <0.22 0.41 J <0.15 11/25/13 <0.10 <0.10 <0.10 <0.22 0.22 J <0.15 MW-17 11/25/13 <0.10 <0.10 <0.10 <0.22 1.3 <0.15 07/20/11 <0.13 <0.13 <0.15 <0.30 0.16 J <0.10 06/11/12 <0.13 <0.13 <0.15 <0.30 <0.13 <0.10 02/18/13 <0.10 <0.10 <0.10 <0.22 1.7 <0.15 11/25/13 <0.10 <0.10 <0.10 <0.22 0.12 J <0.15 07/20/11 <0.13 <0.13 <0.15 <0.30 3.6 <0.10 06/11/12 <0.13 <0.13 <0.15 <0.30 8.6 <0.10 02/18/13 <0.10 <0.10 <0.10 <0.22 2.0 <0.15 11/25/13 <0.10 <0.10 <0.10 <0.22 5.0 <0.15 07/20/11 <0.13 <0.13 <0.15 <0.30 1.3 <0.10 06/11/12 <0.13 <0.13 <0.15 <0.30 1.2 <0.10 02/18/13 <0.10 <0.10 <0.10 <0.22 7.0 <0.15 11/25/13 <0.10 <0.10 <0.10 <0.22 4.4 <0.15 07/20/11 1,510 20.0 J 10.3 J 120 197 <5.0 06/11/12 449 2.6 J 2.7 J 3.5 J 88.9 <1.0 02/18/13 191 2.4 1.2 7.3 31.7 0.90 11/25/13 0.39 J 0.23 J <0.10 0.70 J 20.9 <0.15 07/20/11 481 11.4 6.8 43.0 274 1.9 06/11/12 255 7.3 <1.5 21.4 111 2.3 J 02/18/13 1,220 6.7 2.8 J 6.5 J 205 <1.5 11/25/13 585 6.3 7.3 15.5 87.2 2.5 05/17/17 93.1 4.2 0.60 6.4 29.2 1.2 04/04/18 600 10.6 4.2 J 40.7 91.3 3.7 J 08/01/19 282 9.8 1.7 J 33.4 64.6 1.3 J 08/07/20 64 2.6 0.45 J 7.3 24.5 0.18 J 12/28/21 262 13.8 7.1 25.1 73.6 4.0 J 06/06/22 265 7.8 2.02 40.5 61 <0.470 12/01/22 263 15 8.03 31.6 66.6 <4.70 07/20/11 <0.13 <0.13 <0.15 <0.30 <0.13 <0.10 06/11/12 <0.13 <0.13 <0.15 <0.30 <0.13 <0.10 02/18/13 <0.10 <0.10 <0.10 <0.22 <0.10 <0.15 11/25/13 <0.10 <0.10 <0.10 <0.22 <0.10 <0.15 MW-23 MW-13 MW-11 MW-10 MW-22 MW-20 MW-19 MW-18 MW-14 MW-25 Page 2 of 3 Date: 12/12/2022 Well ID Date Collected (mm/dd/yy) 1 600 600 500 20 6 5,000 260,000 80,000 50,000 20,000 6,000 Facility ID#: 00-0-0000025772 SM 6200B 2L Standard (µg/l) (MAC) GCL (µg/l) TABLE 4 SUMMARY OF GROUND WATER SAMPLE ANALYTICAL RESULTS EP MART (Incident No. 6508)Methyl-tert-butyl ether(MTBE)NaphthaleneAnalytical Method Contaminant of Concern BenzeneTolueneEthylbenzeneTotal Xylenes07/20/11 80.8 15.4 20.7 48.8 24.1 16.7 06/11/12 44.2 6.9 19.1 48.2 12.7 8.9 02/18/13 8.6 1.9 1.1 4.1 7.5 0.74 11/25/13 17.9 6.6 2.2 7.8 13.5 1.9 05/17/17 55.4 5.3 29.3 34.7 7.8 9.9 04/04/18 12.2 1.3 5.3 4.5 5.5 3.3 08/01/19 44 6.0 7.1 20.4 6.8 1.7 08/07/20 9 2.2 23.3 23 2.5 9.8 12/28/21 22.7 3.1 1.2 7.9 11.5 0.62 06/06/22 39.9 3.94 6.53 12.7 7.2 5.6 12/01/22 5.74 1.48 0.463 J 2.48 3.58 1.07 07/20/11 <0.13 <0.13 <0.15 <0.30 <0.13 <0.10 06/11/12 <0.13 0.38 J <0.15 <0.30 <0.13 <0.10 02/18/13 <0.10 <0.10 <0.10 <0.22 <0.10 <0.15 11/25/13 <0.10 <0.10 <0.10 <0.22 <0.10 <0.15 06/11/12 <0.13 <0.13 <0.15 <0.30 <0.13 <0.10 02/18/13 <0.10 <0.10 <0.10 <0.22 <0.10 <0.15 11/25/13 <0.10 <0.10 <0.10 <0.22 <0.10 <0.15 Notes: • Results reported in micrograms per liter (µg/l). • < : Less than the method detection limit specified in the laboratory report. • 2L Standard specified in T15A NCAC 2L.0202. • GCL: Gross contamination level. • NE: Not Established • FP: Free Product. • Concentrations in bold face type exceeded the 2L standards. • Concentrations in italics exceeded the gross contamination levels. • J: Estimated concentration. MW-26 • Refer to laboratory report for detected constituents that did not exceed the MACs, or for which no standard has been established. DW-1 MW-27 Page 3 of 3 APPENDICES APPENDIX A State Correspondence Site Name City / County /Edgecombe Incident #6508 Resp Pty Name / Contact Incident Mgr Region WAS RP Type (Owner/Operator / Landowner / Attny-in-fact)Change Order?Prev. TA #31 Consultant / Project Mgr /Rae T. Brown Telephone / Fax Number /Task Authorization Number:32 ChangeOrd: Project Mgr Email Site Risk / Rank / Abatement:I 0140 D RRA Date:12/16/2021 Proposal# / Scope Dates /% Commercial (C=100%, NC=0%, Both=1%-99%) Has STF Eligibility Been Determined? (Y/N)Site Status (Active or NFA Date) With Claim: [ ] All Main Consultant/Contractor invoices attached?[ ] Proof of payment attached directly to the front of each invoice?  Important: The date of reimbursement is dependent on the Trust Fund balance. There may be a delay in the reimbursement of claims for work under this ePATA.3rd Pty Ded?Task #Lab / SubCode RO AuthProposed Rate/Price (Consultant)CO AuthProposed Task Subtotal (Consultant) Final Preapproved Subtotal (UST Section) Claimed Amount3 (Consultant) 4.031 8 /wells y $110.00 y $880.00 $880.00 / 4.090 #220 9 /602ext y $40.00 y $360.00 $360.00 / 4.091 S/H 1 /shipment y $60.00 y $60.00 $60.00 / 6.090 1 /report y $1,125.00 y $1,125.00 $1,125.00 / 12.050 1 /trip y $250.00 y $250.00 $250.00 / 12.055 1 /TEI Mob y $50.00 y $50.00 $50.00 / // // // // // // // // // // // // // // // // // // // // // Requested Preapproved Claimed 3 TOTAL:$2,725.00 $2,725.00 TOTAL: Total Standard Costs (Not Third Party)$2,725.00 $2,725.00 Total Standard Costs Total applied as Third Party Deductible/Damage Costs $0.00 $0.00 Total Third Pty Costs Process Tracking (Date) TA Submittal:9/14/22 by:(PM)(Reserved for RO) RO Review:9/16/22 by:(IM)Joint UST Preapproval Confirmed By:Date1 9/21/2022 CO Review:9/21/22 by:(STF)RP or Designee Receipt Confirmation By:Date 4 1 - This ePATA expires one year from the Joint UST Preapproval date. This does not extend, alter, or supersede any regulatory deadlines (e.g., NORR's, NOV's, Enforcements, etc.) 2 - THE ONE YEAR STATUTE OF LIMITATIONS APPLIES TO EACH INDIVIDUAL TASK. Costs must be claimed within one year of completion of that task to be reimbursable. 3 - Only Tasks included on this ePATA may be claimed. Do not include other Tasks or claimed costs (i.e., Claim preparation) that were not preapproved or the claim will be returned. 4 - Preapproval is not valid (i.e., claimable) until receipt is signed as 'Confirmed' by the RP or their designee and returned to the Trust Fund within a week of approval. Signature indicates acknowledgement of the tasks and amounts approved. Any objections/appeals must be submitted via Change Order prior to work proceeding. Scope/cost negotiations do not supersede other regulatory deadlines as described in #1 above. Also, any ePATA that has been signed as 'Confirmed' by both the UST Section and RP is not to be modified without written consent by all signatories. 5 - Tasks approved on Directed - CAB Only ePATAs must be performed in accordance with all applicable rules, statutes, and RRD Task Scopes of Work to be reimbursed in full. DWM/UST ePATA 4/1/2022 DIRECTED COSTS Rocky Mount (Must Complete with Claim Submittal)(See Instructions / RRD for Tasks requiring Preapproval / Task Authorization) Owner/Operator 704-845-4010 (Reserved for Incident Manager) PREAPPROVAL / TASK AUTHORIZATION EP Mart 2 Note:This Electronic Preapproval Task Authorization (ePATA)shall be used to receive preapproval from the UST Section.A proposal,including maps and figures,must be attached to elaborate on the costs for the tasks listed below that describes the scope of work and the rationale for the proposed activities.If,following completion of this ePATA,you discover that unexpected tasks must be performed,incurring costs for tasks not originally included with this form,you must complete and submit a separate ePATA request designated as a "Change Order"in the provided space above prior to conducting those tasks.Include a copy of the prior ePATA form for confirmation.Please attach this form to the cover of the corresponding claim when requesting reimbursement.IMPORTANT:Only one claim may be submitted per ePATA and all work on the ePATA must have been completed within 12 months of the completion date of the FIRST completed task to remain within the Statute of Limitations.All ePATAs submitted within a claim are closed with that claim,and may not be re-used in a separate submittal, even for costs or tasks that were not originally claimed.Final reimbursement of costs associated with the Total Claimed amount below may be affected by the eligibility status of the site (i.e., deductibles, apportionment,etc.),and the documentary validation of incurred costs as reasonable and necessary expenses per 15A NCAC 2P .0402 and .0404. JME HB (Initials) RTB Proposed Units / Type (Consultant) Jared Edwards ActiveYES 22-632 November 2022 704-845-4012 Dates of Work (Consultant) Started1 / Completed2 FINAL REIMBURSEMENT 100.00% No rtb@geologicalresourcesinc.com Eastern Petroleum Corp. Geological Resources, Inc. ELECTRONIC PREAPPROVAL TASK AUTHORIZATION FORM Dept of Environmental Quality -Division of Waste Management 4.031 -Sampling up/cross-gradient wells MW-1 & MW-2, core/GCL-range MW-3 (>GCL), MW-4, MW-8, & MW-13,and ~downgradient wells MW-23 & MW-26. ROY COOPER Governor ELIZABETH S. BISER Secretary MICHAEL SCOTT Director North Carolina Department of Environmental Quality | Division of Waste Management | UST Section Washington Regional Office | 943 Washington Square Mall | Washington, NC 27889 | (252) 946-6481 August 1, 2022 Ms. Yvonne Jones Eastern Petroleum Corporation Post Office Box 398 Enfield, NC 27823 Re: Notice of Regulatory Requirements 15A NCAC 2L .0407(d) [Intermediate Risk] Risk-based Assessment and Corrective Action For Petroleum Underground Storage Tanks EP Mart #2 1300 Raleigh Road, Rocky Mount Edgecombe County Incident Number: 6508 Risk Classification: Intermediate Ranking: I 140 D Dear Ms. Jones: The Underground Storage Tank (UST) Section, Division of Waste Management, Department of Environmental Quality (Department) has received the June 30, 2022 Ground Water Monitoring Report, which documents the results from groundwater sampling efforts conducted onsite on June 6, 2022. During this most recent sampling event, groundwater samples from multiple monitoring wells demonstrated petroleum compounds at concentrations above the applicable groundwater quality standards (GWQS) defined in Title 15A of the North Carolina Administrative Code (NCAC) Subchapter 2L .0202. Additionally, benzene was detected in the ground water sample from monitoring well MW-3 at a concentration in excess of the Gross Contaminant Level (GCL) defined for that compound under Title 15A NCAC 2L .0406(2)(e). Accordingly, the risk classification for this release remains Intermediate. A semiannual groundwater sampling event should be scheduled for the 4th quarter of 2022, with a report documenting the results submitted no later than January 31, 2023. As GCL exceedances continue to be observed at this site, additional remedial activities and/or supplemental assessment efforts are necessary to assist in the restoration of groundwater. No proposed remedial strategy was provided among the recommendations in the report. Such recommendations must be made for review by the Department to determine if formal evaluation via a Feasibility Study is appropriate. Effective October 1, 2004, the Department requires that all work not determined to be an emergency response or associated with risk assessment (i.e., the Limited Site Assessment Report, per Title 15A NCAC 2L .0405) must be preapproved if Commercial Leaking Petroleum Underground Storage Tank Cleanup Fund (Trust Fund) reimbursement is anticipated. To comply with this requirement, a completed Preapproval/Claim Authorization Form encompassing the scope of work described above must be received and approved by this office well prior to the start of any tasks for which you intend to seek reimbursement. Recommended remedial alternatives may be proposed in the scope of work explanation associated with a preapproval request that includes any appropriate measures to evaluate the feasibility of that strategy (e.g., a pilot study for the utilization of air sparging, oxygen demand testing for evaluation of oxygen releasing compound injections, etc.) Upon completion of any preapproved activities, you should submit your claim promptly. Reimbursement funds are budgeted based on completed preapprovals, but delays in reimbursement or even denial due to a failure to meet the statute of limitations on claiming a completed task can result if the work is not completed in a timely fashion or if claims are not submitted immediately following work completion. If you have any questions regarding eligibility or reimbursement from the Trust Fund, please contact the UST Section Trust Fund Branch at (919) 707-8171. If you have questions about the information contained in this letter, please contact me at the physical address, telephone number, or email address below. Sincerely, Jared M. Edwards Environmental Program Consultant - Washington Region UST Section, Division of Waste Management, NCDEQ (252) 948-3949 / jared.edwards@ncdenr.gov cc: Geological Resources, Inc., Ms. Rae Troiano Brown (electronic copy) Washington Regional Office | 943 Washington Square Mall | Washington, NC 27889 | (252) 946-6481 APPENDIX B Laboratory Report – Ground Water Samples 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. 12/8/2022 Geological Resources, Inc. Rae Brown 113 West Firetower Road, Suite G Winterville, NC, 28590 Ref: Analytical Testing Lab Report Number: 22-336-0031 Client Project Description: EP Mart #2 GRI #2835 Dear Rae Brown: Waypoint Analytical, LLC (Charlotte) received sample(s) on 12/2/2022 for the analyses presented in the following report. The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method. The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance. The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as- received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely, Danyale Love Project Manager Page 1 of 19 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202337735State ProgramNorth Carolina 12/31/2022402State ProgramNorth Carolina 07/31/202399012State ProgramSouth Carolina 12/31/202299012State ProgramSouth Carolina Page 1 of 1 00016/22-336-0031 Page 2 of 19 Report Number: Sample Summary Table Client Project Description: 22-336-0031 EP Mart #2 GRI #2835 Lab No Client Sample ID Matrix Date Collected Date Received 12/01/2022 08:47Aqueous 94657 Trip Blank 12/02/2022 12/01/2022 09:36Aqueous 94658 MW-1 12/02/2022 12/01/2022 09:53Aqueous 94659 MW-2 12/02/2022 12/01/2022 10:07Aqueous 94660 MW-3 12/02/2022 12/01/2022 10:22Aqueous 94661 MW-4 12/02/2022 12/01/2022 10:35Aqueous 94662 MW-26 12/02/2022 12/01/2022 10:49Aqueous 94663 MW-8 12/02/2022 12/01/2022 11:02Aqueous 94664 MW-13 12/02/2022 12/01/2022 11:17Aqueous 94665 MW-23 12/02/2022 Page 3 of 19 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 22-336-0031 Report Limit Project:EP Mart #2 V 94658MW-1 1.17 12/05/2022 15:106200BMethyl tert-butyl ether (MTBE)µg/L 0.140 V 94659MW-2 286 12/06/2022 19:506200BBenzeneµg/L 18.0 3.91 12/05/2022 16:206200BDi-Isopropyl Ether (DIPE)µg/L 0.500 39.7 12/05/2022 16:206200BEthylbenzeneµg/L 0.170 50.2 12/05/2022 16:206200BMethyl tert-butyl ether (MTBE)µg/L 0.140 10.1 12/05/2022 16:206200BNaphthaleneµg/L 0.470 9.98 12/05/2022 16:206200BTolueneµg/L 0.220 7.67 12/05/2022 16:206200Bo-Xylene µg/L 0.210 34.7 12/05/2022 16:206200Bm,p-Xylene µg/L 0.420 42.4 12/05/2022 16:206200BXylene (Total)µg/L 0.210 V 94660MW-3 8630 12/06/2022 20:146200BBenzeneµg/L 18.0 55.8 12/05/2022 16:446200BDi-Isopropyl Ether (DIPE)µg/L 5.00 874 12/05/2022 16:446200BEthylbenzeneµg/L 1.70 627 12/05/2022 16:446200BMethyl tert-butyl ether (MTBE)µg/L 1.40 130 12/05/2022 16:446200BNaphthaleneµg/L 4.70 72.1 12/05/2022 16:446200BTolueneµg/L 2.20 12.1 12/05/2022 16:446200Bo-Xylene µg/L 2.10 319 12/05/2022 16:446200Bm,p-Xylene µg/L 4.20 331 12/05/2022 16:446200BXylene (Total)µg/L 2.10 V 94661MW-4 2000 12/05/2022 18:176200BBenzeneµg/L 18.0 1240 12/05/2022 18:176200BEthylbenzeneµg/L 17.0 660 12/05/2022 18:176200BNaphthaleneµg/L 47.0 J37.5 12/05/2022 18:176200BTolueneµg/L 22.0 J27.9 12/05/2022 18:176200Bo-Xylene µg/L 21.0 192 12/05/2022 18:176200Bm,p-Xylene µg/L 42.0 J22012/05/2022 18:176200BXylene (Total)µg/L 21.0 V 94662MW-26 5.74 12/05/2022 15:336200BBenzeneµg/L 0.180 J0.463 12/05/2022 15:336200BEthylbenzeneµg/L 0.170 3.58 12/05/2022 15:336200BMethyl tert-butyl ether (MTBE)µg/L 0.140 1.07 12/05/2022 15:336200BNaphthaleneµg/L 0.470 Page 4 of 19 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 22-336-0031 Report Limit Project:EP Mart #2 V 94662MW-26 1.48 12/05/2022 15:336200BTolueneµg/L 0.220 0.876 12/05/2022 15:336200Bo-Xylene µg/L 0.210 1.60 12/05/2022 15:336200Bm,p-Xylene µg/L 0.420 2.48 12/05/2022 15:336200BXylene (Total)µg/L 0.210 V 94663MW-8 3020 12/05/2022 18:416200BBenzeneµg/L 18.0 277 12/05/2022 18:416200BEthylbenzeneµg/L 17.0 J62.8 12/05/2022 18:416200BMethyl tert-butyl ether (MTBE)µg/L 14.0 206 12/05/2022 18:416200BNaphthaleneµg/L 47.0 132 12/05/2022 18:416200BTolueneµg/L 22.0 J42.2 12/05/2022 18:416200Bo-Xylene µg/L 21.0 364 12/05/2022 18:416200Bm,p-Xylene µg/L 42.0 J40612/05/2022 18:416200BXylene (Total)µg/L 21.0 V 94664MW-13 1690 12/06/2022 20:376200BBenzeneµg/L 18.0 70.6 12/05/2022 17:076200BDi-Isopropyl Ether (DIPE)µg/L 5.00 27.4 12/05/2022 17:076200BEthylbenzeneµg/L 1.70 224 12/05/2022 17:076200BMethyl tert-butyl ether (MTBE)µg/L 1.40 23.2 12/05/2022 17:076200BNaphthaleneµg/L 4.70 37.1 12/05/2022 17:076200BTolueneµg/L 2.20 27.3 12/05/2022 17:076200Bo-Xylene µg/L 2.10 102 12/05/2022 17:076200Bm,p-Xylene µg/L 4.20 129 12/05/2022 17:076200BXylene (Total)µg/L 2.10 V 94665MW-23 263 12/05/2022 17:316200BBenzeneµg/L 1.80 49.3 12/05/2022 17:316200BDi-Isopropyl Ether (DIPE)µg/L 5.00 8.03 12/05/2022 17:316200BEthylbenzeneµg/L 1.70 66.6 12/05/2022 17:316200BMethyl tert-butyl ether (MTBE)µg/L 1.40 15.0 12/05/2022 17:316200BTolueneµg/L 2.20 8.67 12/05/2022 17:316200Bo-Xylene µg/L 2.10 22.9 12/05/2022 17:316200Bm,p-Xylene µg/L 4.20 31.6 12/05/2022 17:316200BXylene (Total)µg/L 2.10 Page 5 of 19 , REPORT OF ANALYSISReport Number : Project Information : NC 28590 22-336-0031 00087 Geological Resources, Inc. 113 West Firetower Road, Suite G Rae Brown Winterville Danyale Love Project Manager GRI #2835 Received : 12/02/2022 EP Mart #2 Report Date : 12/08/2022 Sample ID : Lab No : Sampled:Trip Blank 94657 Matrix: 12/1/2022 8:47 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V27354 12/05/22 09:00 <0.180 µg/L 0.180 0.500Benzene 1 12/05/22 13:37 V27355ANG <0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 12/05/22 13:37 V27355ANG <0.170 µg/L 0.170 0.500Ethylbenzene 1 12/05/22 13:37 V27355ANG <0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 12/05/22 13:37 V27355ANG <0.470 µg/L 0.470 1.00Naphthalene 1 12/05/22 13:37 V27355ANG <0.220 µg/L 0.220 0.500Toluene 1 12/05/22 13:37 V27355ANG <0.210 µg/L 0.210 0.500o-Xylene 1 12/05/22 13:37 V27355ANG <0.420 µg/L 0.420 1.00m,p-Xylene 1 12/05/22 13:37 V27355ANG <0.21 µg/L 0.210 0.500 Xylene (Total)1 12/05/22 13:37 V27355 Surrogate: 4-Bromofluorobenzene 98.8 Limits: 70-130%12/05/22 13:371 ANG V27355 Surrogate: Dibromofluoromethane 102 Limits: 70-130%12/05/22 13:371 ANG V27355 Surrogate: 1,2-Dichloroethane - d4 94.8 Limits: 70-130%12/05/22 13:371 ANG V27355 Surrogate: Toluene-d8 96.6 Limits: 70-130%12/05/22 13:371 ANG V27355 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 6 of 19 , REPORT OF ANALYSISReport Number : Project Information : NC 28590 22-336-0031 00087 Geological Resources, Inc. 113 West Firetower Road, Suite G Rae Brown Winterville Danyale Love Project Manager GRI #2835 Received : 12/02/2022 EP Mart #2 Report Date : 12/08/2022 Sample ID : Lab No : Sampled:MW-1 94658 Matrix: 12/1/2022 9:36 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V27354 12/05/22 09:00 <0.180 µg/L 0.180 0.500Benzene 1 12/05/22 15:10 V27355ANG <0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 12/05/22 15:10 V27355ANG <0.170 µg/L 0.170 0.500Ethylbenzene 1 12/05/22 15:10 V27355ANG 1.17 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 12/05/22 15:10 V27355ANG <0.470 µg/L 0.470 1.00Naphthalene 1 12/05/22 15:10 V27355ANG <0.220 µg/L 0.220 0.500Toluene 1 12/05/22 15:10 V27355ANG <0.210 µg/L 0.210 0.500o-Xylene 1 12/05/22 15:10 V27355ANG <0.420 µg/L 0.420 1.00m,p-Xylene 1 12/05/22 15:10 V27355ANG <0.21 µg/L 0.210 0.500 Xylene (Total)1 12/05/22 15:10 V27355 Surrogate: 4-Bromofluorobenzene 99.4 Limits: 70-130%12/05/22 15:101 ANG V27355 Surrogate: Dibromofluoromethane 104 Limits: 70-130%12/05/22 15:101 ANG V27355 Surrogate: 1,2-Dichloroethane - d4 101 Limits: 70-130%12/05/22 15:101 ANG V27355 Surrogate: Toluene-d8 98.8 Limits: 70-130%12/05/22 15:101 ANG V27355 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 7 of 19 , REPORT OF ANALYSISReport Number : Project Information : NC 28590 22-336-0031 00087 Geological Resources, Inc. 113 West Firetower Road, Suite G Rae Brown Winterville Danyale Love Project Manager GRI #2835 Received : 12/02/2022 EP Mart #2 Report Date : 12/08/2022 Sample ID : Lab No : Sampled:MW-2 94659 Matrix: 12/1/2022 9:53 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V27354 12/05/22 09:00 V27417 12/06/22 09:00 286 µg/L 18.0 50.0Benzene 100 12/06/22 19:50 V27418MSA 3.91 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 12/05/22 16:20 V27355ANG 39.7 µg/L 0.170 0.500Ethylbenzene 1 12/05/22 16:20 V27355ANG 50.2 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 12/05/22 16:20 V27355ANG 10.1 µg/L 0.470 1.00Naphthalene 1 12/05/22 16:20 V27355ANG 9.98 µg/L 0.220 0.500Toluene 1 12/05/22 16:20 V27355ANG 7.67 µg/L 0.210 0.500o-Xylene 1 12/05/22 16:20 V27355ANG 34.7 µg/L 0.420 1.00m,p-Xylene 1 12/05/22 16:20 V27355ANG 42.4 µg/L 0.210 0.500 Xylene (Total)1 12/05/22 16:20 V27355 Surrogate: 4-Bromofluorobenzene 98.6 Limits: 70-130%12/05/22 16:201 ANG V27355 Surrogate: Dibromofluoromethane 104 Limits: 70-130%12/05/22 16:201 ANG V27355 Surrogate: 1,2-Dichloroethane - d4 110 Limits: 70-130%12/05/22 16:201 ANG V27355 Surrogate: Toluene-d8 100 Limits: 70-130%12/05/22 16:201 ANG V27355 Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%12/06/22 19:50100 MSA V27418 Surrogate: Dibromofluoromethane 103 Limits: 70-130%12/06/22 19:50100 MSA V27418 Surrogate: 1,2-Dichloroethane - d4 97.8 Limits: 70-130%12/06/22 19:50100 MSA V27418 Surrogate: Toluene-d8 98.2 Limits: 70-130%12/06/22 19:50100 MSA V27418 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 8 of 19 , REPORT OF ANALYSISReport Number : Project Information : NC 28590 22-336-0031 00087 Geological Resources, Inc. 113 West Firetower Road, Suite G Rae Brown Winterville Danyale Love Project Manager GRI #2835 Received : 12/02/2022 EP Mart #2 Report Date : 12/08/2022 Sample ID : Lab No : Sampled:MW-3 94660 Matrix: 12/1/2022 10:07 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V27354 12/05/22 09:00 V27417 12/06/22 09:00 8630 µg/L 18.0 50.0Benzene 100 12/06/22 20:14 V27418MSA 55.8 µg/L 5.00 5.00Di-Isopropyl Ether (DIPE)10 12/05/22 16:44 V27355ANG 874 µg/L 1.70 5.00Ethylbenzene 10 12/05/22 16:44 V27355ANG 627 µg/L 1.40 10.0Methyl tert-butyl ether (MTBE)10 12/05/22 16:44 V27355ANG 130 µg/L 4.70 10.0Naphthalene 10 12/05/22 16:44 V27355ANG 72.1 µg/L 2.20 5.00Toluene 10 12/05/22 16:44 V27355ANG 12.1 µg/L 2.10 5.00o-Xylene 10 12/05/22 16:44 V27355ANG 319 µg/L 4.20 10.0m,p-Xylene 10 12/05/22 16:44 V27355ANG 331 µg/L 2.10 5.00 Xylene (Total)10 12/05/22 16:44 V27355 Surrogate: 4-Bromofluorobenzene 98.0 Limits: 70-130%12/05/22 16:4410 ANG V27355 Surrogate: Dibromofluoromethane 104 Limits: 70-130%12/05/22 16:4410 ANG V27355 Surrogate: 1,2-Dichloroethane - d4 99.8 Limits: 70-130%12/05/22 16:4410 ANG V27355 Surrogate: Toluene-d8 98.6 Limits: 70-130%12/05/22 16:4410 ANG V27355 Surrogate: 4-Bromofluorobenzene 101 Limits: 70-130%12/06/22 20:14100 MSA V27418 Surrogate: Dibromofluoromethane 104 Limits: 70-130%12/06/22 20:14100 MSA V27418 Surrogate: 1,2-Dichloroethane - d4 98.0 Limits: 70-130%12/06/22 20:14100 MSA V27418 Surrogate: Toluene-d8 98.4 Limits: 70-130%12/06/22 20:14100 MSA V27418 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 9 of 19 , REPORT OF ANALYSISReport Number : Project Information : NC 28590 22-336-0031 00087 Geological Resources, Inc. 113 West Firetower Road, Suite G Rae Brown Winterville Danyale Love Project Manager GRI #2835 Received : 12/02/2022 EP Mart #2 Report Date : 12/08/2022 Sample ID : Lab No : Sampled:MW-4 94661 Matrix: 12/1/2022 10:22 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V27354 12/05/22 09:00 2000 µg/L 18.0 50.0Benzene 100 12/05/22 18:17 V27355ANG <50.0 µg/L 50.0 50.0Di-Isopropyl Ether (DIPE)100 12/05/22 18:17 V27355ANG 1240 µg/L 17.0 50.0Ethylbenzene 100 12/05/22 18:17 V27355ANG <14.0 µg/L 14.0 100Methyl tert-butyl ether (MTBE)100 12/05/22 18:17 V27355ANG 660 µg/L 47.0 100Naphthalene 100 12/05/22 18:17 V27355ANG 37.5 J µg/L 22.0 50.0Toluene 100 12/05/22 18:17 V27355ANG 27.9 J µg/L 21.0 50.0o-Xylene 100 12/05/22 18:17 V27355ANG 192 µg/L 42.0 100m,p-Xylene 100 12/05/22 18:17 V27355ANG 220 J µg/L 21.0 50.0 Xylene (Total)100 12/05/22 18:17 V27355 Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%12/05/22 18:17100 ANG V27355 Surrogate: Dibromofluoromethane 100 Limits: 70-130%12/05/22 18:17100 ANG V27355 Surrogate: 1,2-Dichloroethane - d4 97.8 Limits: 70-130%12/05/22 18:17100 ANG V27355 Surrogate: Toluene-d8 97.4 Limits: 70-130%12/05/22 18:17100 ANG V27355 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 10 of 19 , REPORT OF ANALYSISReport Number : Project Information : NC 28590 22-336-0031 00087 Geological Resources, Inc. 113 West Firetower Road, Suite G Rae Brown Winterville Danyale Love Project Manager GRI #2835 Received : 12/02/2022 EP Mart #2 Report Date : 12/08/2022 Sample ID : Lab No : Sampled:MW-26 94662 Matrix: 12/1/2022 10:35 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V27354 12/05/22 09:00 5.74 µg/L 0.180 0.500Benzene 1 12/05/22 15:33 V27355ANG <0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 12/05/22 15:33 V27355ANG 0.463 J µg/L 0.170 0.500Ethylbenzene 1 12/05/22 15:33 V27355ANG 3.58 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 12/05/22 15:33 V27355ANG 1.07 µg/L 0.470 1.00Naphthalene 1 12/05/22 15:33 V27355ANG 1.48 µg/L 0.220 0.500Toluene 1 12/05/22 15:33 V27355ANG 0.876 µg/L 0.210 0.500o-Xylene 1 12/05/22 15:33 V27355ANG 1.60 µg/L 0.420 1.00m,p-Xylene 1 12/05/22 15:33 V27355ANG 2.48 µg/L 0.210 0.500 Xylene (Total)1 12/05/22 15:33 V27355 Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%12/05/22 15:331 ANG V27355 Surrogate: Dibromofluoromethane 101 Limits: 70-130%12/05/22 15:331 ANG V27355 Surrogate: 1,2-Dichloroethane - d4 99.2 Limits: 70-130%12/05/22 15:331 ANG V27355 Surrogate: Toluene-d8 98.8 Limits: 70-130%12/05/22 15:331 ANG V27355 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 11 of 19 , REPORT OF ANALYSISReport Number : Project Information : NC 28590 22-336-0031 00087 Geological Resources, Inc. 113 West Firetower Road, Suite G Rae Brown Winterville Danyale Love Project Manager GRI #2835 Received : 12/02/2022 EP Mart #2 Report Date : 12/08/2022 Sample ID : Lab No : Sampled:MW-8 94663 Matrix: 12/1/2022 10:49 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V27354 12/05/22 09:00 3020 µg/L 18.0 50.0Benzene 100 12/05/22 18:41 V27355ANG <50.0 µg/L 50.0 50.0Di-Isopropyl Ether (DIPE)100 12/05/22 18:41 V27355ANG 277 µg/L 17.0 50.0Ethylbenzene 100 12/05/22 18:41 V27355ANG 62.8 J µg/L 14.0 100Methyl tert-butyl ether (MTBE)100 12/05/22 18:41 V27355ANG 206 µg/L 47.0 100Naphthalene 100 12/05/22 18:41 V27355ANG 132 µg/L 22.0 50.0Toluene 100 12/05/22 18:41 V27355ANG 42.2 J µg/L 21.0 50.0o-Xylene 100 12/05/22 18:41 V27355ANG 364 µg/L 42.0 100m,p-Xylene 100 12/05/22 18:41 V27355ANG 406 J µg/L 21.0 50.0 Xylene (Total)100 12/05/22 18:41 V27355 Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%12/05/22 18:41100 ANG V27355 Surrogate: Dibromofluoromethane 104 Limits: 70-130%12/05/22 18:41100 ANG V27355 Surrogate: 1,2-Dichloroethane - d4 99.8 Limits: 70-130%12/05/22 18:41100 ANG V27355 Surrogate: Toluene-d8 98.2 Limits: 70-130%12/05/22 18:41100 ANG V27355 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 12 of 19 , REPORT OF ANALYSISReport Number : Project Information : NC 28590 22-336-0031 00087 Geological Resources, Inc. 113 West Firetower Road, Suite G Rae Brown Winterville Danyale Love Project Manager GRI #2835 Received : 12/02/2022 EP Mart #2 Report Date : 12/08/2022 Sample ID : Lab No : Sampled:MW-13 94664 Matrix: 12/1/2022 11:02 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V27354 12/05/22 09:00 V27417 12/06/22 09:00 1690 µg/L 18.0 50.0Benzene 100 12/06/22 20:37 V27418MSA 70.6 µg/L 5.00 5.00Di-Isopropyl Ether (DIPE)10 12/05/22 17:07 V27355ANG 27.4 µg/L 1.70 5.00Ethylbenzene 10 12/05/22 17:07 V27355ANG 224 µg/L 1.40 10.0Methyl tert-butyl ether (MTBE)10 12/05/22 17:07 V27355ANG 23.2 µg/L 4.70 10.0Naphthalene 10 12/05/22 17:07 V27355ANG 37.1 µg/L 2.20 5.00Toluene 10 12/05/22 17:07 V27355ANG 27.3 µg/L 2.10 5.00o-Xylene 10 12/05/22 17:07 V27355ANG 102 µg/L 4.20 10.0m,p-Xylene 10 12/05/22 17:07 V27355ANG 129 µg/L 2.10 5.00 Xylene (Total)10 12/05/22 17:07 V27355 Surrogate: 4-Bromofluorobenzene 100 Limits: 70-130%12/05/22 17:0710 ANG V27355 Surrogate: Dibromofluoromethane 104 Limits: 70-130%12/05/22 17:0710 ANG V27355 Surrogate: 1,2-Dichloroethane - d4 100 Limits: 70-130%12/05/22 17:0710 ANG V27355 Surrogate: Toluene-d8 98.8 Limits: 70-130%12/05/22 17:0710 ANG V27355 Surrogate: 4-Bromofluorobenzene 104 Limits: 70-130%12/06/22 20:37100 MSA V27418 Surrogate: Dibromofluoromethane 105 Limits: 70-130%12/06/22 20:37100 MSA V27418 Surrogate: 1,2-Dichloroethane - d4 100 Limits: 70-130%12/06/22 20:37100 MSA V27418 Surrogate: Toluene-d8 97.4 Limits: 70-130%12/06/22 20:37100 MSA V27418 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 13 of 19 , REPORT OF ANALYSISReport Number : Project Information : NC 28590 22-336-0031 00087 Geological Resources, Inc. 113 West Firetower Road, Suite G Rae Brown Winterville Danyale Love Project Manager GRI #2835 Received : 12/02/2022 EP Mart #2 Report Date : 12/08/2022 Sample ID : Lab No : Sampled:MW-23 94665 Matrix: 12/1/2022 11:17 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V27354 12/05/22 09:00 263 µg/L 1.80 5.00Benzene 10 12/05/22 17:31 V27355ANG 49.3 µg/L 5.00 5.00Di-Isopropyl Ether (DIPE)10 12/05/22 17:31 V27355ANG 8.03 µg/L 1.70 5.00Ethylbenzene 10 12/05/22 17:31 V27355ANG 66.6 µg/L 1.40 10.0Methyl tert-butyl ether (MTBE)10 12/05/22 17:31 V27355ANG <4.70 µg/L 4.70 10.0Naphthalene 10 12/05/22 17:31 V27355ANG 15.0 µg/L 2.20 5.00Toluene 10 12/05/22 17:31 V27355ANG 8.67 µg/L 2.10 5.00o-Xylene 10 12/05/22 17:31 V27355ANG 22.9 µg/L 4.20 10.0m,p-Xylene 10 12/05/22 17:31 V27355ANG 31.6 µg/L 2.10 5.00 Xylene (Total)10 12/05/22 17:31 V27355 Surrogate: 4-Bromofluorobenzene 96.6 Limits: 70-130%12/05/22 17:3110 ANG V27355 Surrogate: Dibromofluoromethane 105 Limits: 70-130%12/05/22 17:3110 ANG V27355 Surrogate: 1,2-Dichloroethane - d4 99.8 Limits: 70-130%12/05/22 17:3110 ANG V27355 Surrogate: Toluene-d8 96.6 Limits: 70-130%12/05/22 17:3110 ANG V27355 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQL Page 14 of 19 Quality Control Data 22-336-0031Report No: Project Description: Client ID:Geological Resources, Inc. EP Mart #2 QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V27355QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V27354 Associated Lab Samples: 94657, 94658, 94659, 94660, 94661, 94662, 94663, 94664, 94665 LRB-V27354 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 12/05/22 12:500.5000.180<0.180µg/LBenzene 12/05/22 12:500.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE) 12/05/22 12:500.5000.170<0.170µg/LEthylbenzene 12/05/22 12:501.000.140<0.140µg/LMethyl tert-butyl ether (MTBE) 12/05/22 12:501.000.470<0.470µg/LNaphthalene 12/05/22 12:500.5000.220<0.220µg/LToluene 12/05/22 12:500.5000.210<0.210µg/Lo-Xylene 12/05/22 12:501.000.420<0.420µg/Lm,p-Xylene 12/05/22 12:504-Bromofluorobenzene (S)100 70-130 12/05/22 12:50Dibromofluoromethane (S)104 70-130 12/05/22 12:501,2-Dichloroethane - d4 (S)97.4 70-130 12/05/22 12:50Toluene-d8 (S)101 70-130 LCS-V27354 LCSD-V27354Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 20.5 10310921.720.0µg/LBenzene 70-130 5.6 20.0 19.3 96.510420.720.0µg/LDi-Isopropyl Ether (DIPE)70-130 7.0 20.0 18.9 94.510521.020.0µg/LEthylbenzene 70-130 10.5 20.0 19.7 98.510821.520.0µg/LMethyl tert-butyl ether (MTBE)70-130 8.7 20.0 21.9 11011723.420.0µg/LNaphthalene 70-130 6.6 20.0 19.8 99.010420.820.0µg/LToluene 70-130 4.9 20.0 18.9 94.510721.320.0µg/Lo-Xylene 70-130 11.9 20.0 39.1 97.710943.540.0µg/Lm,p-Xylene 70-130 10.6 20.0 10197.24-Bromofluorobenzene (S)70-130 110104Dibromofluoromethane (S)70-130 Page 1 of 3Date:12/08/2022 12:54 PM Page 15 of 19 Quality Control Data 22-336-0031Report No: Project Description: Client ID:Geological Resources, Inc. EP Mart #2 QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V27355QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V27354 LCS-V27354 LCSD-V27354Laboratory Control Sample & LCSD LCSD ResultParameter LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 99.698.81,2-Dichloroethane - d4 (S)70-130 96.099.2Toluene-d8 (S)70-130 Page 2 of 3Date:12/08/2022 12:54 PM Page 16 of 19 Quality Control Data 22-336-0031Report No: Project Description: Client ID:Geological Resources, Inc. EP Mart #2 QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V27418QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V27417 Associated Lab Samples: 94659, 94660, 94664 LRB-V27417 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 12/06/22 15:330.5000.180<0.180µg/LBenzene 12/06/22 15:334-Bromofluorobenzene (S)99.6 70-130 12/06/22 15:33Dibromofluoromethane (S)109 70-130 12/06/22 15:331,2-Dichloroethane - d4 (S)98.8 70-130 12/06/22 15:33Toluene-d8 (S)97.8 70-130 LCS-V27417 LCSD-V27417Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 21.4 10711222.420.0µg/LBenzene 70-130 4.5 20.0 10299.24-Bromofluorobenzene (S)70-130 111114Dibromofluoromethane (S)70-130 10099.41,2-Dichloroethane - d4 (S)70-130 97.298.0Toluene-d8 (S)70-130 Page 3 of 3Date:12/08/2022 12:54 PM Page 17 of 19 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:22-336-0031 Geological Resources, Inc. 00087 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:IRT15 0.9C 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:Danyale Love Date & Time:12/02/2022 15:45:12 Special precautions or instructions included? Comments: Page 18 of 19 Page 19 of 19 APPENDIX C Contaminant Mass Calculations Area ID Well IDs Area (ft²) Average Well Depth (ft) Average Depth to Water (ft) Water Column Height (ft) Volume (ft³) Volume (L) Effective Porosity Effective Volume (L) MW-3 MW-4 MW-8 MW-13 Area Date Well Benzene (μ/L) Toluene (μ/L) Ethylbenzene (μ/L) Xylenes (μ/L) MTBE (μ/L) Naphthalene (μ/L)Total DTW Average Water Column Height (ft.) Total Average Mass (g)Percent Red. To Date Red. MW-3 14600.00 11000.00 2360.00 6340.00 6590.00 567.00 41457.00 12.36 MW-4 FP FP FP FP FP FP 461000.00 10.68 MW-8 16200.00 14100.00 2990.00 16500.00 791.00 1530.00 52111.00 9.17 MW-13 7170.00 168.00 136.00 527.00 711.00 129.00 8841.00 11.13 Avg.12656.67 8422.67 1828.67 7789.00 2697.33 742.00 140852.25 10.84 MW-3 8640.00 270.00 1450.00 2150.00 2020.00 325.00 14855.00 12.65 MW-4 0.29 0.00 20.70 7.10 0.00 46.20 74.29 8.32 MW-8 6300.00 62.90 178.00 195.00 60.90 34.60 6831.40 9.49 MW-13 4130.00 68.90 48.60 256.00 136.00 0.00 4639.50 11.71 Avg.4767.57 100.45 424.33 652.03 554.23 101.45 6600.05 10.54 MW-3 11600.00 411.00 1780.00 3110.00 2480.00 473.00 19854.00 12.27 MW-4 7190.00 8380.00 1270.00 6670.00 0.00 392.00 23902.00 8.23 MW-8 6110.00 255.00 875.00 1840.00 0.00 251.00 9331.00 9.15 MW-13 5190.00 104.00 87.30 205.00 157.00 0.00 5743.30 11.13 Avg.7522.50 2287.50 1003.08 2956.25 659.25 279.00 14707.58 10.20 MW-3 5610.00 48.30 563.00 154.00 231.00 60.20 6666.50 13.24 MW-4 1830.00 15.30 1400.00 640.00 0.00 494.00 4379.30 10.88 MW-8 2850.00 59.40 62.60 87.70 0.00 0.00 3059.70 9.92 MW-13 4040.00 36.80 77.90 205.00 240.00 0.00 4599.70 11.98 Avg.3582.50 39.95 525.88 271.68 117.75 138.55 4676.30 11.51 MW-3 7210.00 369.00 1460.00 1310.00 1350.00 319.00 12018.00 12.66 MW-4 2230.00 36.30 1580.00 1030.00 0.00 641.00 5517.30 10.71 MW-8 4190.00 173.00 228.00 486.00 62.20 0.00 5139.20 9.41 MW-13 3400.00 61.70 68.40 240.00 213.00 0.00 3983.10 11.38 Avg.4257.50 160.00 834.10 766.50 406.30 240.00 6664.40 11.04 MW-3 8630.00 72.10 874.00 331.00 627.00 130.00 10664.10 13.41 MW-4 2000.00 0.00 1240.00 0.00 0.00 660.00 3900.00 10.82 MW-8 3020.00 132.00 277.00 0.00 0.00 206.00 3635.00 10.07 MW-13 1690.00 37.10 27.40 129.00 224.00 23.20 2130.70 12.15 Avg. 3835.00 60.30 604.60 115.00 212.75 254.80 5082.45 11.61 Date Average Water Column Height (ft.) 07/20/11 7.67 201,921 08/01/19 7.96 9823 08/07/20 8.31 22845 12/28/21 7.00 6118 06/06/22 7.46 9298 12/01/22 6.89 6547 Notes: • FP: Free Product • Area of the contaminant plume is calculated from Figure # • Height of the water column is calculated by subtracting the average depth to water from the average well depth of the referenced monitoring wells • Volume of the contaminant plume is calculated by multiplying the area of the plume by the average height of the water column during each sampling event • Effective porosity is assumed based on the sub-surface soil profile obtained from well construction records and soil boring logs • Total mass was calculated by multiplying the total contaminant concentrations for the sampling event with effective volume • Contaminant mass cannot be calculated in wells containing FP; therefore, the total contaminant mass is based on the known concentrations in the area for each sampling event. • When areas couldn’t be sampled, the last known concentrations were used in the calculations. 97.0% Area 1 201,921.1307/20/11 12/28/21 --- 08/01/19 6,546.97 29.6% 96.8% --- 08/07/20 22,844.76 12/01/22 95.1% 95.1% -132.6% APPENDIX C CONTAMINANT MASS CALCULATIONS EP MART #2 1 7,163,159252,9657.6633,024.2 Baseline Event 18.5 10.84 9,822.67 88.7% 6,117.81 73.2% 95.1% 0.20 1,432,632 8.31 6.89 7.00 7.96 --- 7.67 29.6% 97% Total Contaminant Mass (g) --- Percent Reduction To Date 95% 89% 97% Percent Reduction Compared to Previous Event 95.4% -52.0% 95% -132.6% 06/06/22 7.46 9,298.35 -52.0% 73.2% 6.00 6.50 7.00 7.50 8.00 8.50 0 50,000 100,000 150,000 200,000 250,000 Average Water Column Height (ft)Contaminant Mass (grams)Time Total Contaminant Mass vs. Time EP MART #2 (Incident No. 6508) Contaminant Mass (grams)Water Column Height (ft)Linear (Contaminant Mass (grams))