Loading...
HomeMy WebLinkAboutWS-29484_48624_C_O_202303092725 E. Millbrook Road Suite 121 Raleigh, NC 27604 Tel: 919-871-0999 Fax: 737-207-8261 www.oneatlas.com N.C. Engineering License No. C-1598 March 9, 2023 Mr. Ryan Bond State of North Carolina Department of Environment and Natural Resources Winston-Salem Regional Office Division of Waste Management – UST Section 450 West Hanes Mill Road, Suite 300 Winston-Salem, North Carolina 27105 Re: Gasoline and Diesel Product Line Closure Report Circle K Store #2723154 11315 N. Main Street Archdale, Randolph County, North Carolina NCDEQ Facility ID #000-0000030854 Dear Mr. Bond: ATC Associates of North Carolina, P.C. (ATC), on behalf of Circle K Stores, Inc. is submitting this Gasoline and Diesel Product Line Closure Report for the referenced facility. Please feel free to contact me at (919) 561-3893 should you have any questions or comments. Sincerely, ATC Associates of North Carolina, P.C. Maureen A. Jackson, P.G. Senior Project Manager cc: Mr. Alan Cubberley, Circle K Stores, Inc. Gasoline and Diesel Product Line Closure Report Circle K Store #2723154 11315 N. Main Street Archdale, Randolph County, North Carolina Prepared for: Circle K Stores, Inc. 1100 Situs Court, Suite 100 Raleigh, NC 27606 Prepared by: ATC Associates of North Carolina, P.C. 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina 27604 Gasoline and Diesel Product Line Closure Report ATC Associates of N.C. Circle K Store #2723154 March 9, 2023 TABLE OF CONTENTS 1.0 Executive Summary ............................................................................................................. 1 2.0 Site Information.................................................................................................................... 2 2.1 Site Identification ...................................................................................................... 2 2.2 Contact Information .................................................................................................. 2 2.3 Release Information ................................................................................................. 2 3.0 History and Characterization .............................................................................................. 3 4.0 UST Closure ......................................................................................................................... 4 4.1 Preparations for UST Closure .................................................................................. 4 4.2 Closure Activities ...................................................................................................... 4 4.3 Initial Response Actions ........................................................................................... 4 4.4 Soil Excavation Activities .......................................................................................... 4 4.5 Soil Sampling Procedures ........................................................................................ 4 4.6 Quality Control Measures ......................................................................................... 5 4.7 Groundwater Sampling Procedures .......................................................................... 5 4.8 Laboratory Analytical Results ................................................................................... 5 5.0 LNAPL Investigation ............................................................................................................ 5 6.0 Summary and Conclusions ................................................................................................. 6 Table Table 1 Soil Analytical Results Figures Figure 1 Topographic Map Figure 2 Site Map Figure 3 Petroleum-related Impacts to Soil Appendices Appendix A Soil Disposal Manifests Appendix B Laboratory Report and Chain-of-Custody Documents Gasoline and Diesel Product Line Closure Report ATC Associates of N.C. Circle K Store #2723154 March 9, 2023 1 1.0 EXECUTIVE SUMMARY Circle K Stores, Inc. opted to replace the gasoline and diesel product lines at this facility. During January 2023, the gasoline and diesel product lines were replaced. During the product line removal and subsequent replacement, soil samples were collected under each dispenser and along the accessible product line lengths. Field screening measurements indicated petroleum-related impacts to soil. The soil samples were submitted to the project laboratory for analyses by Total Petroleum Hydrocarbons (TPH)-Gasoline Range Organics (GRO), TPH-Diesel Range Organics (DRO), EPA Methods 8260 and 8270, and/or MADEP Methods for VPH and EPH, depending on sampling location. The locations of the soil samples are provided in Figure 2. During product line replacement activities, approximately 42.87 tons of petroleum-impacted soil were removed from the site for off-site disposal. Some areas of the product line trench were excavated in depth and over-excavation soil samples were collected (labelled S1 through S5 and W1 through W9). Laboratory analytical results of the soil samples collected detected target compound concentrations above established Soil-to-Groundwater (STGW) Maximum Soil Contaminant Concentration (MSCC) and/or State Action Levels in several of the soil samples. It should be noted none of the detected concentrations exceeded the established Residential MSCCs. Based on the current soil analytical results, it appears petroleum-impacted soil remains at the site below established Residential MSCCs. A Notice of Regulatory Requirements (NORR) has been issued by the North Carolina Department of Environmental Quality (NCDEQ) to perform Comprehensive Site Assessment (CSA) activities. Gasoline and Diesel Product Line Closure Report Circle K Slore#2723154 ATC Associates of N.C. March 9, 2023 2.0 SITE INFORMATION 2.1 Site ldentification Date of Report: March 9. 2023 Facility l.D.: 00-0-0000030854 UST lncident Number (if known): 48624 Site Name: Circle K Store #2723154 Site Street Address: 1 1315 N. Main Street City/Town: Archdale Zip Code.27263 County. Randolph Description of Geographical Data Point (e.9., diesel fill port): UST basin Location Method (GPS, topographical map, other): Gooqle Earth Latitude (decimal degrees): 35.914800 N, Longitude (decimal degrees): 79.97251o W 2.2 CONTACT INFORMATION UST Owner: Circle K Stores, lnc Address: 1100 Situs Court, Suite 100, Raleiqh, NC 27606 Tel.'. 919-774-6700 UST Operator: Circle K Stores. lnc. Address: 1100 Situs Court, Suite 100, Raleiqh, NC 27606 Tel.: 919-774-6700 Property Owner:Circle K Stores, lnc. Address: P.O. Box 52085 Phoenix, Arizona 85072 Tel : 919-774-6700 Property Occupant:Circle K Store #2723154 Address: 1 1315 N. Main Street Archdale, NC 27263 Consultant: ATC Associates of North Carolina, P,C. rel. 919-774-6700 Address: 2725 E. Millbrook Road, Suite 121 Raleiqh, NC 27604 Tel: 919-561-3893 Contractor. Guardian Fuelinq Technoloqies Address: 5116 Departure Drive Raleiqh, NC 27616 Tel: 919-729-6980 Analytical Laboratory. SGS North America, lnc. Address: 500 Ambassador Cafferv, Scott. LA 70583 State Certification No. 487 Tel'. 337-237-4775 ATC Associates is correct and 2.3 Release lnformation Date Discovered Auqust 16, 2022 Estimated Quantity of Release. Approximatelv 888 qallons qasoline (reqular) Cause of Release: Pipinq failure in transition sump Source of Release (Dispenser/Piping/UST): Pipinq failure in transition sump Sizes and contents of UST system(s) from which the release occurred): Four 10.OOO-qallon gasoline USTs and one 10;000-qallon diesel UST l, Maureen A. certify that the knowledge. Jackson, a information of North Carolina, P.C., do accurate to the best of my (Please Affix Seal and ATC Associates is licensed The certification number of ineering (circle one or both) in North Carolina. Gasoline and Diesel Product Line Closure Report ATC Associates of N.C. Circle K Store #2723154 March 9, 2023 3 3.0 HISTORY AND CHARACTERIZATION The Circle K Store #2723154 (Facility ID No. 00-0-0000030854) is currently an active retail fuel outlet and convenience store. The site is located at 11315 N. Main Street Archdale, Randolph County, North Carolina. The site consists of a single-story convenience store. The cover at the site consists of asphalt and concrete. The site is zoned for commercial purposes. Immediately adjacent properties are zoned for residential or commercial purposes. A topographic map is presented as Figure 1, and a site map is presented as Figure 2. UST system information is summarized on the following table. UST ID PRODUCT CAPACITY (gals.) MATERIALS INSTALLATION DATE UST STATUS RELEASE ASSOCIATED (Yes/No) 1 Gasoline (Regular) 10,000 UST:FRP Clad Steel Piping: DW Flex 01/01/1989 Active Yes 2 Gasoline (Premium) 10,000 UST: FRP Clad Steel Piping: DW Flex 01/01/1989 Active No 3 Gasoline (Regular) 10,000 UST: FRP Clad Steel Piping: DW Flex 01/01/1989 Active No 4 Diesel 10,000 UST: FRP Clad Steel Piping: DW Flex 01/01/1989 Active Yes 5 Gasoline (Boat Fuel) 10,000 UST: FRP Clad Steel Piping: DW Flex 01/01/1989 Active No Circle K Stores, Inc. opted to replace the gasoline and diesel product lines at this facility. During January 2023, the gasoline and diesel product lines were replaced. Gasoline and Diesel Product Line Closure Report ATC Associates of N.C. Circle K Store #2723154 March 9, 2023 4 4.0 UST CLOSURE This section presents information regarding the removal of the site gasoline and diesel product lines. 4.1 Preparations for UST Closure During January 2023, the gasoline and diesel product lines were removed and replaced at the site. Circle K contracted with Guardian Fueling Technologies of Raleigh, North Carolina to replace the product lines. 4.2 Closure Activities During January 2023, the gasoline and diesel product lines were removed and replaced at the facility. Guardian Fueling Technologies was retained by Circle K to remove and replace the existing gasoline and diesel product lines. Figure 2 depicts the site map. 4.3 Initial Response Actions During product line replacement activities, some areas of the product line were over-excavated. Approximately 42.87 tons of petroleum-impacted soil were removed from the site for off-site disposal. A copy of the disposal manifests are provided in Appendix A. 4.4 Soil Excavation Activities Field screening measurements detected some areas of petroleum-related impacts to soil along the product line trench. Photoionization detector (PID) measurements are provided in Table 1. Some areas of the trench were over-excavated. Approximately 42.87 tons of petroleum-impacted soil were removed from the site for off-site disposal. Soil confirmation soil samples were collected in the over-excavated areas and submitted to the project laboratory for analyses. Please see section 4.5 for further information. 4.5 Soil Sampling Procedures During the product line removal and subsequent replacement, soil samples were collected along the product line trenches and at each dispenser island location. Some areas of the product line trench were over-excavated. Soil samples were collected along the sidewalls and along the bottom of these excavated areas. Gasoline and Diesel Product Line Closure Report ATC Associates of N.C. Circle K Store #2723154 March 9, 2023 5 Soil samples collected from the product line trench were labelled as L1 through L15. Soil samples collected from the dispenser islands were labelled as D1 through D5. Soil samples collected along the sidewall of the over-excavated areas were labelled as W1 thorugh W9. Soil samples collected at the bottom of the over-excavated areas were labelled as S1 through S5. Soil samples L1 through L15 and D1 through D5 were submitted to the project laboratory for analyses by Total Petroleum Hydrocarbons (TPH)-Gasoline Range Organics (GRO), TPH-Diesel Range Organics (DRO), and/or EPA Method 8260B, depending on sampling location. Soil samples S1 through S5 and W1 through W9 were submitted to the project laboratory for analyses by EPA Methods 8260 and 8270 and Massachusetts Department of Environmental Protection (MADEP) Methods for volatile petroleum hydrocarbons (VPH) and extractable petroleum hydrocarbons (EPH). The locations of the soil samples are provided in Figure 2. 4.6 Quality Control Measures The soil samples selected for analyses were properly labelled and placed on ice in a cooler pending transport to SGS North America, Inc. (SGS) (NC Certification No. 487). Strict chain-of-custody and sample preservation protocols were observed for shipping and delivering the samples. 4.7 Groundwater Sampling Procedures Groundwater sampling was not performed during site activities. 4.8 Laboratory Analytical Results Laboraotry analytical results of the soil samples collected detected target compound concentrations above established Soil-to-Groundwater (STGW) Maximum Soil Contaminant Concentration (MSCC) and/or State Action Levels in several of the soil samples. It should be noted none of the detected concentrations exceeded the established Residential MSCCs. Table 1 provides a summary of the soil analytical results. Petrolem-impacted soil is depicted on Figure 3. A copy of the laboratory report is provided in Appendix B. 5.0 LNAPL INVESTIGATION Light non-aqueous phase liquid (LNAPL) was not encountered during site activities. Gasoline and Diesel Product Line Closure Report ATC Associates of N.C. Circle K Store #2723154 March 9, 2023 6 6.0 SUMMARY AND CONCLUSIONS Circle K Stores, Inc. opted to replace the gasoline and diesel product lines at this facility. During January 2023, the gasoline and diesel product lines were replaced. During the product line removal and subsequent replacement, soil samples were collected under each dispenser and along the accessible product line lengths. Field screening measurements indicated petroleum-related impacts to soil. The soil samples were submitted to the project laboratory for analyses by Total Petroleum Hydrocarbons (TPH)-Gasoline Range Organics (GRO), TPH-Diesel Range Organics (DRO), EPA Methods 8260 and 8270, and/or MADEP Methods for VPH and EPH, depending on sampling location. During product line replacement activities, approximately 42.87 tons of petroleum-impacted soil were removed from the site for off-site disposal. Some areas of the product line trench were excavated in depth and over-excavation soil samples were collected (labelled S1 through S5 and W1 through W9). Laboratory analytical results of the soil samples collected detected target compound concentrations above established Soil-to-Groundwater (STGW) Maximum Soil Contaminant Concentration (MSCC) and/or State Action Levels in several of the soil samples. It should be noted none of the detected concentrations exceeded the established Residential MSCCs. Based on the current soil analytical results, it appears petroleum-impacted soil remains at the site below established Residential MSCCs. A Notice of Regulatory Requirements (NORR) has been issued by the North Carolina Department of Environmental Quality (NCDEQ) to perform Comprehensive Site Assessment (CSA) activities. TABLE TABLE 1SOIL ANALYTICAL RESULTS CIRCLE K STORE #2701493299 US HIGHWAY 64 WESTLEXINGTON, DAVIDSON COUNTY, NORTH CAROLINANCDEQ FACILITY ID #00-0-0000036528 Sample ID Date Sampled Sample Location Sample Depth (feet) PID Reading (ppm)TPH-GROTPH-GROBenzeneTolueneEthylbenzenTotal XylenesMTBENaphthalenen-PropylbenzeneIPEAcetoneBromochloromethaneBromodichloromethaneMethyl ChlorideMethyl Ethyl Ketone4-Methyl-2-pentanonen-Butylbenzenesec-Butylbenzenetert-ButylbenzeneChlorobenzene1,2-Dibromo-3-chloropropane1,2-Dichloroethane1,2-DichloropropaneEthyl Alcohol2-HexanoneIsopropylbenzenep-Isopropyltoluene1,1,2,2-Tetrachloroethane1,1,2-Trichloroethane1,2,3-Trichloropropane1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneVinyl AcetateFluoreneFluoranthenePhenol1-Methylnaphthalene2-MethylnaphthaleneNaphthalenePyrenebis(2-Ethylhexyl)phthalateDi-n-butyl PhthalateC5-C8 AliphaticsC9-C18 AliphaticsC19-C36 AliphaticsC9-C22 AromaticsL1 1/23/2023 Product Line 3 1.9 <6.4 --0.00075 0.00090J <0.0010 <0.0021 <0.0010 <0.0051 <0.0051 0.00081J 0.0098J <0.0010 <0.0010 <0.0051 <0.013 <0.013 <0.0051 <0.0051 <0.0010 <0.0010 <0.0051 <0.0010 <0.0010 <0.41 <0.013 <0.0051 <0.0051 <0.0010 <0.0010 <0.0051 <0.0051 <0.0051 <0.0051 --------------------------L2 1/23/2023 Product Line 3 1.8 <5.7 --0.0148 0.00070J <0.00093 <0.0019 0.0023 <0.0047 <0.0047 0.0024 0.0124J <0.00093 <0.00093 0.0020J <0.012 <0.012 <0.0047 <0.0047 <0.00093 <0.00093 <0.0047 <0.00093 <0.00093 <0.37 <0.012 <0.0047 <0.0047 <0.00093 <0.00093 <0.0047 <0.0047 <0.0047 <0.0047 --------------------------L3 1/23/2023 Product Line 3 5.8 5.80 --0.0780 0.0012J 0.0069 0.0214 0.0032 0.0076 0.0065 0.0027 0.0274J <0.00090 <0.00090 0.0022J <0.011 <0.011 <0.0045 0.0039J <0.00090 <0.00090 <0.0045 <0.00090 <0.00090 <0.36 <0.011 0.0021J <0.0045 <0.00090 <0.00090 <0.0045 0.00066J <0.0045 <0.0045 -------------------------- L4 1/23/2023 Product Line 3 0.8 3.03J --0.0903 0.0046J 0.0113 0.0454 0.0024 <0.0051 0.0034J 0.0041 0.0287J <0.0010 <0.0010 0.00053J <0.013 <0.013 <0.0051 0.0023J <0.0010 <0.0010 <0.0051 <0.0010 <0.0010 <0.41 <0.013 0.0017J <0.0051 <0.0010 <0.0010 <0.0051 0.0280 0.0209 <0.0051 -------------------------- L5 1/23/2023 Product Line 3 19.0 <6.5 --0.140 0.0050J 0.0215 0.100 0.0028 0.00073J 0.0010J 0.0054 0.0400J <0.0011 <0.0011 0.00043J <0.014 <0.014 <0.0055 <0.0055 <0.0011 <0.0011 <0.0055 <0.0011 <0.0011 <0.44 <0.014 0.00078J <0.0055 <0.0011 <0.0011 <0.0055 0.0029J <0.0055 <0.0055 -------------------------- L6 1/23/2023 Product Line 3 27.3 8.81 --0.160 0.157 0.161 1.97 <0.00096 0.0134 0.0519 0.0065 0.0204J <0.00096 <0.00096 0.00039J <0.012 <0.012 <0.0048 0.0067 <0.00096 <0.00096 <0.0048 <0.00096 <0.00096 <0.38 <0.012 0.0425 <0.0048 <0.00096 <0.00096 <0.0048 0.540 <0.0048 <0.0048 -------------------------- L7 1/23/2023 Product Line 3 115.3 8.23 --0.399 0.0280 0.0411 1.41 <0.00092 0.0159 0.0299 0.0090 0.0173J <0.00092 <0.00092 0.00053J <0.012 <0.012 <0.0046 0.0071 0.00089J <0.00092 <0.0046 <0.00092 <0.00092 <0.37 <0.012 0.0178 <0.0046 <0.00092 <0.00092 <0.0046 0.0204 <0.0046 <0.0046 -------------------------- L8 1/23/2023 Product Line 3 124.9 16.7 --0.118 0.550 0.486 2.60 <0.0010 0.0255 0.0654 0.0056 0.0489J <0.0010 <0.0010 <0.0051 <0.013 <0.013 <0.0051 <0.0051 <0.0010 <0.0010 <0.0051 <0.0010 <0.0010 <0.41 <0.013 0.0434 <0.0051 <0.0010 <0.0010 <0.0051 0.781 <0.0051 <0.0051 -------------------------- L9 1/26/2023 Product Line 3 105.8 <6.3 --0.0186 0.0102 0.0131 0.0642 <0.0010 0.0179 0.0084 0.0031 0.110 <0.0010 <0.0010 0.0013J 0.0201 <0.013 <0.0052 0.0015J <0.0010 <0.0010 <0.0052 <0.0010 <0.0010 <0.41 <0.013 0.0036J <0.0052 <0.0010 <0.0010 <0.0052 0.0160 0.0041J <0.0052 -------------------------- L10 1/26/2023 Product Line 3 72.1 62.3 --<0.031 0.0251J <0.062 0.146J <0.062 <0.31 <0.31 <0.062 <3.1 <0.062 <0.062 <0.31 <0.78 <0.78 <0.31 0.0846J <0.062 <0.062 <0.31 <0.062 <0.062 <25 <0.78 <0.31 0.196J <0.062 <0.062 <0.31 0.140J 0.0365J <0.31 -------------------------- L11 1/26/2023 Product Line 3 55.0 9.60 --0.0405 0.104J 0.188 1.21 <0.062 0.339 <0.31 <0.062 <3.1 <0.062 <0.062 <0.31 <0.77 <0.77 <0.31 0.0233J <0.062 <0.062 <0.31 <0.062 <0.062 <25 <0.77 0.0500J <0.31 <0.062 <0.062 <0.31 1.01 0.227J <0.31 -------------------------- L12 1/26/2023 Product Line 3 149.9 <5.9 --0.0038 0.0084 0.0102 0.0579 <0.0010 0.0056 0.0036J 0.00029J 0.0252J <0.0010 <0.0010 0.0013J <0.013 <0.013 <0.0051 0.00047J <0.0010 <0.0010 <0.0051 <0.0010 <0.0010 <0.41 <0.013 0.0014J <0.0051 <0.0010 <0.0010 <0.0051 0.0323 0.0079 <0.0051 -------------------------- L13 1/26/2023 Product Line 3 3.8 12.9 <6.0 0.0880 0.317J 0.408 2.55 <0.064 0.187J 0.0625J <0.064 <3.2 <0.064 <0.064 <0.32 0.134J <0.80 <0.32 <0.32 <0.064 <0.064 <0.32 <0.064 <0.064 <26 <0.80 0.0355J <0.32 <0.064 <0.064 <0.32 0.436 0.0952J <0.32 <0.012 <0.012 0.285 0.0286 0.0512 0.0272 <0.012 <0.21 <0.21 <7.1 16.35 0.137J 5.75 L14 1/26/2023 Product Line 3 1,377 <7.2 --0.0027 0.0355 0.0254 0.171 <0.0012 0.0135 0.0174 0.00033J 0.0647 <0.0012 <0.0012 0.0012J <0.015 <0.015 <0.0059 0.0037J <0.0012 <0.0012 <0.0059 <0.0012 <0.0012 2.50 <0.015 0.0097 <0.0059 <0.0012 <0.0012 <0.0059 0.148 0.0386 <0.0059 -------------------------- L15 1/26/2023 Product Line 3 649.0 4.74 610 <0.028 0.0150J 0.326 0.611 <0.0526 0.205J 0.230J <0.056 <2.8 <0.056 <0.056 <0.28 <0.70 <0.70 <0.28 0.0453J <0.056 <0.056 <0.28 <0.056 <0.056 <22 <0.70 0.0701J 0.0246J <0.056 <0.0565 <0.28 1.03 0.198J <0.28 0.0576 <0.011 <0.19 0.916 0.921 <0.011 0.019 <0.19 <0.19 <4.7 162.96J 17.7 41.1 D1 1/26/2023 Dispenser 3 2.7 11.8 <5.9 ----------------------------------------------------------------------------------------D2 1/26/2023 Dispenser 3 1.5 <7.8 35.3 0.0186 0.0152 0.0166 0.0798 0.0019 0.0190 0.0126 0.0022 0.137 <0.0012 <0.0012 <0.0060 0.0233 <0.015 0.0045J 0.0025J <0.0012 <0.0012 <0.0060 <0.0012 0.00082J <0.48 <0.015 0.0047J 0.00062J <0.0012 <0.0012 <0.0060 0.0359 0.0094 <0.0060 --------------------------D3 1/26/2023 Dispenser 3 1.2 <7.2 --<0.037 0.0159J <0.074 <0.15 <0.074 0.0580J <0.37 <0.074 <3.7 <0.074 <0.074 <0.37 <0.93 <0.93 <0.37 <0.37 <0.074 <0.074 <0.37 <0.074 <0.074 <30 <0.93 <0.37 <0.37 <0.074 <0.074 <0.37 0.0531J <0.37 <0.37 --------------------------D4 1/26/2023 Dispenser 3 1.3 20.8 --0.0322 0.0881 0.0339 0.287 0.0033 0.0200 0.0271 0.0079 0.0326J <0.00099 <0.00099 <0.0050 <0.012 0.0220 <0.0050 0.0056 <0.00099 <0.00099 <0.0050 <0.00099 <0.00099 <0.40 <0.012 0.0139 0.0021J <0.00099 0.0108 0.0021J 0.165 0.0463 <0.0050 --------------------------D5 1/26/2023 Dispenser 3 1.2 <5.5 --0.00069 0.0015J 0.00059J 0.0041 <0.00095 0.00066J <0.0047 <0.00095 0.0546 <0.00095 <0.00095 <0.0047 0.0071J <0.012 <0.0047 <0.0047 <0.00095 <0.00095 <0.0047 <0.00095 0.00074J <0.38 <0.012 <0.0047 <0.0047 <0.00095 <0.00095 <0.0047 0.0020J 0.00072J <0.0047 --------------------------S1 1/26/2023 Post-Ex Line 5.5 0.8 ----0.0499 0.368 0.341 2.74 <0.063 0.418 0.136J <0.063 <3.2 <0.063 <0.063 <0.32 0.187J <0.79 <0.32 0.213J <0.063 <0.063 <0.32 <0.063 <0.063 <25 <0.79 0.0863J <0.32 <0.063 <0.063 <0.32 1.39 0.335 <0.32 <0.011 <0.011 <0.20 <0.011 <0.011 <0.011 <0.011 <0.20 <0.20 3.37J 20.07 0.134J 8.66J S2 1/26/2023 Post-Ex Line 5.5 1.0 ----0.102 0.215J 0.335 2.26 <0.066 0.275J 0.129J <0.066 <3.3 <0.066 <0.066 <0.33 <0.82 <0.82 <0.33 0.0264J <0.066 <0.066 <0.33 <0.066 <0.066 <26 <0.82 0.0668J <0.33 <0.066 <0.066 <0.33 0.854 0.218J <0.33 <0.012 <0.012 <0.20 <0.012 <0.012 <0.012 <0.012 <0.20 <0.20 4.78J 13.5 <2.9 11.98J S3 1/26/2023 Post-Ex Line 5.5 11.9 ----0.0452 0.0452 0.0605 0.352 0.0027 0.0010J 0.0041J 0.0051 0.0383J <0.00095 <0.00095 <0.0048 <0.012 <0.012 0.00093J <0.0048 <0.00095 <0.00095 <0.0048 <0.00095 0.0010 <0.38 <0.012 0.0062 <0.0048 <0.00095 0.0012 0.00077J 0.0395 0.0149 <0.0048 <0.011 <0.011 <0.19 <0.011 <0.011 <0.011 <0.011 <0.19 0.0501J <5.2 9.07J 0.0293J 3.24S41/26/2023 Post-Ex Line 5.5 1.4 ----0.0035 0.0057 0.0044 0.0198 0.00085J <0.0046 0.0011J 0.00081J <0.046 <0.00093 <0.00093 0.0014J 0.0083J <0.012 <0.0046 <0.0046 <0.00093 <0.00093 <0.0046 <0.00093 0.00064J 0.0838J 0.00061J 0.0011J <0.0046 <0.00093 <0.00093 <0.0046 0.0041J 0.0012J <0.0046 <0.011 <0.011 <0.19 <0.011 <0.011 <0.011 <0.011 <0.19 0.0326J <5.3 4.95 0.161J 3.58S51/26/2023 Post-Ex Line 5.5 64.1 ----0.0165 0.0092 0.0086 0.0415 0.0016 0.0124 0.0077 0.0023 0.102 <0.0011 <0.0011 <0.0053 0.0178 <0.013 0.0052J 0.0020J <0.0011 <0.0011 <0.0053 <0.0011 <0.0011 <0.43 <0.013 0.0029J <0.0053 <0.0011 <0.0011 <0.0053 0.0120 0.0030J <0.0053 <0.011 0.0196 <0.19 <0.011 <0.011 <0.011 0.0143 <0.19 <0.19 <5.9 4.31 <2.9 5.89W11/26/2023 Post-Ex Wall 4 0.5 ----0.0227 0.0039J 0.0027 0.0126 0.0018 0.0037J 0.0018J 0.0050 0.0712 <0.00093 <0.00093 <0.0047 0.0119J <0.012 0.00062J <0.0047 <0.00093 <0.00093 <0.0047 <0.00093 0.00066J <0.37 <0.012 0.0012J <0.0047 <0.00093 <0.00093 <0.0047 0.0023J 0.00060J <0.0047 <0.011 <0.011 <0.19 <0.011 <0.011 <0.011 <0.011 <0.19 <0.19 <5.9 3.76 0.323J 3.80W21/26/2023 Post-Ex Wall 4 8.2 ----0.0030 0.0054 0.0066 0.0177 0.0230 <0.0050 0.0082 0.0049 <0.050 <0.0010 <0.0010 <0.0050 <0.013 <0.013 <0.0050 <0.0050 <0.0010 <0.0010 <0.0050 <0.0010 <0.0010 <0.40 <0.013 0.0071 <0.0050 <0.0010 <0.0010 <0.0050 0.0038J 0.00098J <0.0050 ------------------<5.4 3.93 1.93J 9.27W31/26/2023 Post-Ex Wall 4 2.3 ----0.0121 0.0118 0.0063 0.0323 0.0019 0.0015J 0.0023J 0.0019 0.0825 <0.0011 <0.0011 <0.0053 0.0113J <0.013 <0.0053 <0.0053 <0.0011 <0.0011 <0.0053 <0.0011 <0.0011 2.52 <0.013 0.0014J <0.0053 <0.0011 <0.0011 <0.0053 0.0138 0.0039J <0.0053 <0.012 <0.012 <0.20 <0.012 <0.012 <0.012 <0.012 <0.20 <0.20 <6.4 5.78 0.0453J 7.31 W4 1/26/2023 Post-Ex Wall 4 35.0 ----0.119 0.256J 0.602 4.68 <0.065 0.262J 0.112J <0.065 <3.2 <0.065 <0.065 <0.32 <0.81 <0.81 <0.32 <0.32 <0.065 <0.065 <0.32 <0.065 <0.065 <26 <0.81 0.0723J <0.32 <0.065 <0.065 <0.32 0.902 0.194J <0.32 <0.012 <0.012 <0.20 <0.012 <0.012 <0.012 <0.012 0.892 <0.20 <6.3 19.83 0.0026J 8.04 W5 1/26/2023 Post-Ex Wall 4 2.2 ----<0.033 0.0921J 0.177 0.976 <0.065 0.318J 0.122J <0.065 <3.3 <0.065 <0.065 <0.33 <0.82 <0.82 <0.33 0.0235J <0.065 <0.065 <0.33 <0.065 <0.065 <26 <0.82 0.0312J <0.33 <0.065 <0.065 <0.33 0.845 0.232J <0.33 <0.012 <0.012 <0.20 <0.012 <0.012 <0.012 <0.012 <0.20 <0.20 26.1 63.55 0.0831J 31.05 W6 1/26/2023 Post-Ex Wall 4 0.9 ----0.0052 0.0073 0.00473 0.0210 0.00057J 0.00070J 0.0012J 0.00062J 0.0736 <0.0011 <0.0011 <0.0056 0.0061J <0.014 <0.0056 <0.0056 <0.0011 <0.0011 <0.0056 <0.0011 0.00077J <0.45 <0.014 0.00090J <0.0056 <0.0011 <0.0011 <0.0056 0.0060 0.0017J <0.0056 <0.012 <0.012 <0.20 <0.012 <0.012 <0.012 <0.012 <0.20 <0.20 <6.6 4.70 0.255J 4.82 W7 1/26/2023 Post-Ex Wall 4 2.5 ----0.0014 0.0027J 0.0015 0.0081 <0.0010 <0.0052 <0.0052 <0.0010 0.0410J <0.0010 <0.0010 <0.0052 0.0028J <0.013 <0.0052 <0.0052 <0.0010 <0.0010 <0.0052 <0.0010 0.00057J <0.42 <0.013 <0.0052 <0.0052 <0.0010 <0.0010 <0.0052 0.0022J 0.00059J <0.0052 <0.011 <0.011 <0.19 <0.011 <0.011 <0.011 <0.011 <0.19 <0.19 <5.9 4.91 0.167J 5.75 W8 1/26/2023 Post-Ex Wall 4 32.0 ----0.0639 0.0106 0.0449 0.172 0.0023 0.0112 0.0078 0.0065 0.125 <0.0010 <0.0010 0.0017J 0.0230 0.00076J 0.0027J 0.0013J <0.0010 <0.0010 <0.0052 <0.0010 0.00070J 0.0885J 0.00084J 0.0043J <0.0052 <0.0010 0.0010 <0.0052 0.0111 0.0027J <0.0052 <0.012 <0.012 <0.20 <0.012 <0.012 <0.012 <0.012 <0.20 <0.20 <5.8 5.62 0.527J 7.96 W9 1/26/2023 Post-Ex Wall 4 4.5 ----0.0167 0.0119 0.0813 0.0914 0.0154 0.0499 0.0527 0.00094 0.0905 0.00076J 0.0020 0.0011J 0.156 0.177 0.178 0.0131 0.0014 0.00093 0.0017J 0.00056J 0.00099 2.66 0.0171 0.0239 0.0118 0.0114 0.0652 0.0041J 0.210 0.0898 0.0015J <0.011 <0.011 0.319 <0.011 <0.011 <0.011 <0.011 <0.19 <0.19 20.3 34.03 0.143J 15.92 50 100 ---------------------------------------------------------------------------------------- ----0.0072 5.4 8 6 0.085 0.2 1.4 0.32 24 NE 0.0019 0.014 16 0.42 2.4 2.2 1.7 0.44 NE 0.0019 0.003 16 0.17 1.3 0.12 0.0012 0.0032 NE 6.6 6.6 0.36 55 330 0.22 0.054 1.5 0.2 210 6.6 NE 68 540 ##31 ----12 1,250 60.3 3,120 156 5.5 1,560 156 14,000 NE 7.9 51 9,380 1,250 782 1,560 1,560 312 NE 7.29 17.9 5,160 78.2 1,560 1,560 3.31 11.6 NE 156 156 15,600 625 625 4,690 22.8 62.5 5.5 469 47 NE 939 1,500 31,000 469 Notes:1. Concentrations reported in milligrams per kilogram (mg/kg).2. "<" = not detected at or above the laboratory reporting limit.3. NE denotes not established.4. ## denotes compound considered immobile.5. J denotes value estimated by project laboratory. ANALTYICAL METHOD State Action Level (mg/kg) Soil-to-Groundwater MSCCs (mg/kg) Residential MSCCs (mg/kg) EPA Method 8260 MADEP Methods for VPH and EPHEPA Method 8270EPA Method 8015 FIGURES MW-1OW-1MW-5MW-2MW-3MW-4OW-2OW-3USTBASINCIRCLE K#2723154STORENORTH MAIN STREETTRINDALE ROADD1L15L13L14D1L1D3L2L3L4L5D4L6/S1W2W1L7/S2W4W3L8L9/S3L10W5W6L11/S4W7W9L12/S5W8D5= MONITORING WELL= OBSERVATION WELL= SOIL SAMPLE= DISPENSER ISLAND= EXCAVATION AREA MW-1OW-1MW-5MW-2MW-3MW-4OW-2OW-3USTBASINCIRCLE K#2723154STORENORTH MAIN STREETTRINDALE ROADD1L15L13L14D1L1D3L2L3L4L5D4L6/S1W2W1L7/S2W4W3L8L9/S3L10W5W6L11/S4W7W9L12/S5W8D5= MONITORING WELL= OBSERVATION WELL= SOIL SAMPLE= DISPENSER ISLAND= EXCAVATION AREA1. SOIL-TO-GROUNDWATER MSCCs EXPRESSED IN mg/kg2. ONLY CONCENTRATIONS EXCEEDING MSCCs ARE SHOWN APPENDIX A Soil Disposal Manifests APPENDIX B Laboratory Report and Chain-of-Custody Documents Gasoline and Diesel Product Line Closure Report Circle K Slore#2723154 ATC Associates of N.C. March 9, 2023 2.0 SITE INFORMATION 2.1 Site ldentification Date of Report: March 9. 2023 Facility l.D.: 00-0-0000030854 UST lncident Number (if known): 48624 Site Name: Circle K Store #2723154 Site Street Address: 1 1315 N. Main Street City/Town: Archdale Zip Code.27263 County. Randolph Description of Geographical Data Point (e.9., diesel fill port): UST basin Location Method (GPS, topographical map, other): Gooqle Earth Latitude (decimal degrees): 35.914800 N, Longitude (decimal degrees): 79.97251o W 2.2 CONTACT INFORMATION UST Owner: Circle K Stores, lnc Address: 1100 Situs Court, Suite 100, Raleiqh, NC 27606 Tel.'. 919-774-6700 UST Operator: Circle K Stores. lnc. Address: 1100 Situs Court, Suite 100, Raleiqh, NC 27606 Tel.: 919-774-6700 Property Owner:Circle K Stores, lnc. Address: P.O. Box 52085 Phoenix, Arizona 85072 Tel : 919-774-6700 Property Occupant:Circle K Store #2723154 Address: 1 1315 N. Main Street Archdale, NC 27263 Consultant: ATC Associates of North Carolina, P,C. rel. 919-774-6700 Address: 2725 E. Millbrook Road, Suite 121 Raleiqh, NC 27604 Tel: 919-561-3893 Contractor. Guardian Fuelinq Technoloqies Address: 5116 Departure Drive Raleiqh, NC 27616 Tel: 919-729-6980 Analytical Laboratory. SGS North America, lnc. Address: 500 Ambassador Cafferv, Scott. LA 70583 State Certification No. 487 Tel'. 337-237-4775 ATC Associates is correct and 2.3 Release lnformation Date Discovered Auqust 16, 2022 Estimated Quantity of Release. Approximatelv 888 qallons qasoline (reqular) Cause of Release: Pipinq failure in transition sump Source of Release (Dispenser/Piping/UST): Pipinq failure in transition sump Sizes and contents of UST system(s) from which the release occurred): Four 10.OOO-qallon gasoline USTs and one 10;000-qallon diesel UST l, Maureen A. certify that the knowledge. Jackson, a information of North Carolina, P.C., do accurate to the best of my (Please Affix Seal and ATC Associates is licensed The certification number of ineering (circle one or both) in North Carolina.