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Home My WebLink AboutWS-7265_30671_CA_WSW_20230306_Letters-Labs North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 The Pantry, Inc. c/o Circle K P.O. Box 52085 Phoenix, Arizona 85072-5085 Re: Health Risk Evaluation of Water Supply Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Sirs: Please find attached the Sample Analytical Results for water samples collected from your well, identified as WW1, located at 1031 NC Highway 87 North, Elon, Alamance County, on November 29, 2022. The water supply well at this property is treated by a Point-of-Entry treatment system (POE) to remove contaminants. Water samples were taken at three points on the system. The samples were collected and analyzed as part of the investigation of a petroleum release in the vicinity. The water samples were analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. Contaminants were detected in the pre-treatment water sample, as shown on the attached Sample Analytical Results. No contaminants were detected in the post-treatment water sample, therefore the POE is effectively removing contaminants from the water supply well. Because contaminants were detected in the pre-treatment water sample, a Health Risk Evaluation of the water supply was performed by an environmental toxicologist in the Division of Waste Management. The Health Risk Evaluation, which is attached also, compares the detected concentration of contaminants to acceptable concentrations and provides a recommendation for safe use of the water. If you have any questions, please contact Dave Lilley at (919) 707-8241 or contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachments: The Pantry Sample Analytical Results Health Risk Evaluation cc: Alamance County Health Department, via email, EH.Admin@alamance-nc.com Ms. Heidi York, Alamance County Manager, via email, Heidi.York@alamance-nc.com March 6, 2023 TO: Mindy Lepard Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation Incident # 30671 The Pantry Well Sampling Results (Pre) 1031 NC Highway 87 N Elon, NC During this sampling event, two contaminants were detected in the well water. The standards used to determine if the water is suitable for drinking and cooking are the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L). If any contaminant concentrations exceed applicable standards for using the water for drinking and cooking, those contaminant concentrations are further analyzed to determine if the water is suitable for other household uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentrations with the applicable standards: Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L) LA85724-1 Dichlorodifluoromethane 0.32 1,000 Methyl Tert Butyl Ether 2.5 20 µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. RECOMMENDATION: None of the contaminants detected exceeded the applicable water standards. Therefore, no restrictions on the use of this water are recommended at this time. David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW1 PRE Lab Sample ID:LA85724-1 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2G508430.D 1 12/10/22 17:13 NN n/a n/a V2G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane 0.32 0.50 0.12 ug/l J 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 9 of 122 LA8572433.1 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW1 PRE Lab Sample ID:LA85724-1 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether 2.5 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 98%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 10 of 122 LA8572433.1 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW1 PRE Lab Sample ID:LA85724-1 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 102%70-130% 460-00-4 4-Bromofluorobenzene 102%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 11 of 122 LA8572433.1 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW1 MID Lab Sample ID:LA85724-2 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2G508432.D 1 12/10/22 17:42 NN n/a n/a V2G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 12 of 122 LA8572433.2 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW1 MID Lab Sample ID:LA85724-2 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 97%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 13 of 122 LA8572433.2 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW1 MID Lab Sample ID:LA85724-2 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 100%70-130% 460-00-4 4-Bromofluorobenzene 103%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 14 of 122 LA8572433.2 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW1 POST Lab Sample ID:LA85724-3 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2G508434.D 1 12/10/22 18:10 NN n/a n/a V2G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 15 of 122 LA8572433.3 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW1 POST Lab Sample ID:LA85724-3 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 102%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 16 of 122 LA8572433.3 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW1 POST Lab Sample ID:LA85724-3 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 101%70-130% 460-00-4 4-Bromofluorobenzene 102%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 17 of 122 LA8572433.3 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Mr. Paul H. Jones, Jr. 1869 Littlejohn Lane West Burlington, North Carolina 27217 Re: Health Risk Evaluation of Water Supply Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Mr. Jones: Please find attached the Sample Analytical Results for water samples collected from your well, identified as WW5, located at 1004 NC Highway 87 North, Elon, Alamance County, on November 29, 2022. The water supply well at this property is treated by a Point-of-Entry treatment system (POE) to remove contaminants. Water samples were taken at three points on the system. The samples were collected and analyzed as part of the investigation of a petroleum release in the vicinity. The water samples were analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. Contaminants were detected in the pre-treatment and mid-treatment water samples, as shown on the attached Sample Analytical Results. No contaminants were detected in the post-treatment water sample, therefore the POE is effectively removing contaminants from the water supply well. Because contaminants were detected in the pre-treatment and mid-treatment water samples, a Health Risk Evaluation of the water supply was performed by an environmental toxicologist in the Division of Waste Management. The Health Risk Evaluation, which is attached also, compares the detected concentration of contaminants to acceptable concentrations and provides a recommendation for safe use of the water. If you have any questions, please contact Dave Lilley at (919) 707-8241 or contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachments: Jones Sample Analytical Results Health Risk Evaluation cc: Resident, 1004 NC Highway 87 North, Elon, NC 27244 Alamance County Health Department, via email, EH.Admin@alamance-nc.com Ms. Heidi York, Alamance County Manager, via email, Heidi.York@alamance-nc.com March 6, 2023 TO: Mindy Lepard Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation Incident # 30671 Jones Well Sampling Results (Pre) 1004 NC Highway 87 N Elon, NC During this sampling event, two contaminants were detected in the well water. The standards used to determine if the water is suitable for drinking and cooking are the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L). If any contaminant concentrations exceed applicable standards for using the water for drinking and cooking, those contaminant concentrations are further analyzed to determine if the water is suitable for other household uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentrations with the applicable standards: Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L) LA85724-4 Dichlorodifluoromethane 0.49 1,000 Methyl Tert Butyl Ether 0.29 20 µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. RECOMMENDATION: None of the contaminants detected exceeded the applicable water standards. Therefore, no restrictions on the use of this water are recommended at this time. David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ March 6, 2023 TO: Mindy Lepard Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation Incident # 30671 Jones Well Sampling Results (Mid) 1004 NC Highway 87 N Elon, NC During this sampling event, two contaminants were detected in the well water. The standards used to determine if the water is suitable for drinking and cooking are the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L). If any contaminant concentrations exceed applicable standards for using the water for drinking and cooking, those contaminant concentrations are further analyzed to determine if the water is suitable for other household uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentrations with the applicable standards: Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L) LA85724-5 Dichlorodifluoromethane 0.34 1,000 Methyl Tert Butyl Ether 8.3 20 µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. RECOMMENDATION: None of the contaminants detected exceeded the applicable water standards. Therefore, no restrictions on the use of this water are recommended at this time. David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW5 PRE Lab Sample ID:LA85724-4 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2G508436.D 1 12/10/22 18:39 NN n/a n/a V2G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane 0.49 0.50 0.12 ug/l J 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 18 of 122 LA8572433.4 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW5 PRE Lab Sample ID:LA85724-4 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether 0.29 0.50 0.068 ug/l J 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 101%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 19 of 122 LA8572433.4 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW5 PRE Lab Sample ID:LA85724-4 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 103%70-130% 460-00-4 4-Bromofluorobenzene 101%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 20 of 122 LA8572433.4 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW5 MID Lab Sample ID:LA85724-5 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2G508438.D 1 12/10/22 19:08 NN n/a n/a V2G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane 0.34 0.50 0.12 ug/l J 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 21 of 122 LA8572433.5 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW5 MID Lab Sample ID:LA85724-5 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether 8.3 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 100%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 22 of 122 LA8572433.5 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW5 MID Lab Sample ID:LA85724-5 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 101%70-130% 460-00-4 4-Bromofluorobenzene 101%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 23 of 122 LA8572433.5 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW5 POST Lab Sample ID:LA85724-6 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2G508440.D 1 12/10/22 19:37 NN n/a n/a V2G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 24 of 122 LA8572433.6 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW5 POST Lab Sample ID:LA85724-6 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 98%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 25 of 122 LA8572433.6 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW5 POST Lab Sample ID:LA85724-6 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 101%70-130% 460-00-4 4-Bromofluorobenzene 103%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 26 of 122 LA8572433.6 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Shaks Grill, Inc. 805 Meadowood Drive Burlington, North Carolina 27215 Re: Health Risk Evaluation of Water Supply Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Sirs: Please find attached the Sample Analytical Results for water samples collected from your well, identified as WW9, located at 1039 NC Highway 87 North, Elon, Alamance County, on November 29, 2022. The water supply well at this property is treated by a Point-of-Entry treatment system (POE) to remove contaminants. Water samples were taken at three points on the system. The samples were collected and analyzed as part of the investigation of a petroleum release in the vicinity. The water samples were analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. Contaminants were detected in the pre-treatment water sample, as shown on the attached Sample Analytical Results. No contaminants were detected in the post-treatment water sample, therefore the POE is effectively removing contaminants from the water supply well. Because contaminants were detected in the pre-treatment water sample, a Health Risk Evaluation of the water supply was performed by an environmental toxicologist in the Division of Waste Management. The Health Risk Evaluation, which is attached also, compares the detected concentration of contaminants to acceptable concentrations and provides a recommendation for safe use of the water. If you have any questions, please contact Dave Lilley at (919) 707-8241 or contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachments: Shaks Grill, Inc. Sample Analytical Results Health Risk Evaluation cc: Alamance County Health Department, via email, EH.Admin@alamance-nc.com Ms. Heidi York, Alamance County Manager, via email, Heidi.York@alamance-nc.com March 6, 2023 TO: Mindy Lepard Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation Incident # 30671 Shaks Grill Well Sampling Results (Pre) 1039 NC Highway 87 N Elon, NC During this sampling event, one contaminant was detected in the well water. The standards used to determine if the water is suitable for drinking and cooking are the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L). If the contaminant concentration exceeds the applicable standard for using the water for drinking and cooking, the contaminant concentration is further analyzed to determine if the water is suitable for other household uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentration with the applicable standard: Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L) LA85724-10 Methyl Tert Butyl Ether 22.1 20 Shaded box indicates a standard has been exceeded. µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. RECOMMENDATION: The methyl tert butyl ether concentration in this well exceeds the applicable standard. Therefore, this water is not recommended for drinking or cooking at this time. No restrictions are recommended for using the water for other non-ingestive uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW9 PRE Lab Sample ID:LA85724-10 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508419.D 1 12/10/22 14:34 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 36 of 122 LA8572433.10 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW9 PRE Lab Sample ID:LA85724-10 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether 22.1 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 97%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 37 of 122 LA8572433.10 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW9 PRE Lab Sample ID:LA85724-10 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 107%70-130% 460-00-4 4-Bromofluorobenzene 110%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 38 of 122 LA8572433.10 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW9 MID Lab Sample ID:LA85724-11 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508421.D 1 12/10/22 15:03 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 39 of 122 LA8572433.11 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW9 MID Lab Sample ID:LA85724-11 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 100%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 40 of 122 LA8572433.11 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW9 MID Lab Sample ID:LA85724-11 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 109%70-130% 460-00-4 4-Bromofluorobenzene 113%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 41 of 122 LA8572433.11 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW9 POST Lab Sample ID:LA85724-12 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508423.D 1 12/10/22 15:32 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 42 of 122 LA8572433.12 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW9 POST Lab Sample ID:LA85724-12 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 99%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 43 of 122 LA8572433.12 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW9 POST Lab Sample ID:LA85724-12 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 107%70-130% 460-00-4 4-Bromofluorobenzene 114%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 44 of 122 LA8572433.12 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Ms. Tiffany Ann Basham 1050 NC Highway 87 North Elon, North Carolina 27244 Re: Health Risk Evaluation of Water Supply Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Ms. Basham: Please find attached the Sample Analytical Results for water samples collected from your well, identified as WW11, located at 1050 NC Highway 87 North, Elon, Alamance County, on November 29, 2022. The water supply well at this property is treated by a Point-of-Entry treatment system (POE) to remove contaminants. Water samples were taken at three points on the system. The samples were collected and analyzed as part of the investigation of a petroleum release in the vicinity. The water samples were analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. Contaminants were detected in the pre-treatment water sample, as shown on the attached Sample Analytical Results. No contaminants were detected in the post-treatment water sample, therefore the POE is effectively removing contaminants from the water supply well. Because contaminants were detected in the pre-treatment water sample, a Health Risk Evaluation of the water supply was performed by an environmental toxicologist in the Division of Waste Management. The Health Risk Evaluation, which is attached also, compares the detected concentration of contaminants to acceptable concentrations and provides a recommendation for safe use of the water. If you have any questions, please contact Dave Lilley at (919) 707-8241 or contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachments: Basham Sample Analytical Results Health Risk Evaluation cc: Alamance County Health Department, via email, EH.Admin@alamance-nc.com Ms. Heidi York, Alamance County Manager, via email, Heidi.York@alamance-nc.com March 6, 2023 TO: Mindy Lepard Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation Incident # 30671 Basham Well Sampling Results (Pre) 1050 NC Highway 87 N Elon, NC During this sampling event, one contaminant was detected in the well water. The standards used to determine if the water is suitable for drinking and cooking are the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L). If the contaminant concentration exceeds the applicable standard for using the water for drinking and cooking, the contaminant concentration is further analyzed to determine if the water is suitable for other household uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentration with the applicable standard: Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L) LA85724-13 Methyl Tert Butyl Ether 0.57 20 µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. RECOMMENDATION: The detected contaminant did not exceed the applicable water standard. Therefore, no restrictions on the use of this water are recommended at this time. David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW11 PRE Lab Sample ID:LA85724-13 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508425.D 1 12/10/22 16:01 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 45 of 122 LA8572433.13 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW11 PRE Lab Sample ID:LA85724-13 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether 0.57 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 101%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 46 of 122 LA8572433.13 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW11 PRE Lab Sample ID:LA85724-13 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 109%70-130% 460-00-4 4-Bromofluorobenzene 112%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 47 of 122 LA8572433.13 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW11 MID Lab Sample ID:LA85724-14 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508427.D 1 12/10/22 16:30 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 48 of 122 LA8572433.14 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW11 MID Lab Sample ID:LA85724-14 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 101%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 49 of 122 LA8572433.14 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW11 MID Lab Sample ID:LA85724-14 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 108%70-130% 460-00-4 4-Bromofluorobenzene 112%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 50 of 122 LA8572433.14 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW11 POST Lab Sample ID:LA85724-15 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508429.D 1 12/10/22 16:58 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 51 of 122 LA8572433.15 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW11 POST Lab Sample ID:LA85724-15 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 97%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 52 of 122 LA8572433.15 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW11 POST Lab Sample ID:LA85724-15 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 106%70-130% 460-00-4 4-Bromofluorobenzene 110%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 53 of 122 LA8572433.15 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Ms. Linda T. Lewis 1042 NC Highway 87 North Elon, North Carolina 27244 Re: Health Risk Evaluation of Water Supply Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Ms. Lewis: Please find attached the Sample Analytical Results for a water sample collected from your well, identified as WW8, located at 1042 NC Highway 87 North, Elon, Alamance County, on November 29, 2022. The sample was collected and analyzed as part of the investigation of a petroleum release in the vicinity. The water sample was analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. Contaminants were detected in the water sample, as shown on the attached Sample Analytical Results. Because contaminants were detected in the water sample, a Health Risk Evaluation of the water supply was performed by an environmental toxicologist in the Division of Waste Management. The Health Risk Evaluation, which is attached also, compares the detected concentration of contaminants to acceptable concentrations and provides a recommendation for safe use of the water. If you have any questions, please contact Dave Lilley at (919) 707-8241 or contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachments: Lewis Sample Analytical Results Health Risk Evaluation cc: Alamance County Health Department, via email, EH.Admin@alamance-nc.com Ms. Heidi York, Alamance County Manager, via email, Heidi.York@alamance-nc.com March 6, 2023 TO: Mindy Lepard Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation Incident # 30671 Lewis Well Sampling Results 1042 NC Highway 87 N Elon, NC During this sampling event, one contaminant was detected in the well water. The standards used to determine if the water is suitable for drinking and cooking are the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L). If the contaminant concentration exceeds the applicable standard for using the water for drinking and cooking, the contaminant concentration is further analyzed to determine if the water is suitable for other household uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentration with the applicable standard: Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L) LA85724-19 Methyl Tert Butyl Ether 1.8 20 µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. RECOMMENDATION: The detected contaminant did not exceed the applicable water standard. Therefore, no restrictions on the use of this water are recommended at this time. David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW8 Lab Sample ID:LA85724-19 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 a 1G508437.D 1 12/10/22 18:54 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 63 of 122 LA8572433.19 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW8 Lab Sample ID:LA85724-19 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether 1.8 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 81%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 64 of 122 LA8572433.19 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW8 Lab Sample ID:LA85724-19 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 107%70-130% 460-00-4 4-Bromofluorobenzene 88%70-130% (a) The last internal standard was not within control limits low indicating a high bias for all associated compounds. Sample was ND for these compounds. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 65 of 122 LA8572433.19 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Gary and Sherri Whitaker 1075 NC Highway 87 North Elon, North Carolina 27244 Re: Health Risk Evaluation of Water Supply Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Ms. and Mrs. Whitaker: Please find attached the Sample Analytical Results for a water sample collected from your well, identified as WW23, located at 1075 NC Highway 87 North, Elon, Alamance County, on November 29, 2022. The sample was collected and analyzed as part of the investigation of a petroleum release in the vicinity. The water sample was analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. Contaminants were detected in the water sample, as shown on the attached Sample Analytical Results. Tetrachloroethene is a chlorinated solvent and is not related to petroleum contamination. Because contaminants were detected in the water sample, a Health Risk Evaluation of the water supply was performed by an environmental toxicologist in the Division of Waste Management. The Health Risk Evaluation, which is attached also, compares the detected concentration of contaminants to acceptable concentrations and provides a recommendation for safe use of the water. If you have any questions, please contact Dave Lilley at (919) 707-8241 or contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachments: Whitaker Sample Analytical Results Health Risk Evaluation cc: Alamance County Health Department, via email, EH.Admin@alamance-nc.com Ms. Heidi York, Alamance County Manager, via email, Heidi.York@alamance-nc.com March 6, 2023 TO: Mindy Lepard Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation Incident # 30671 Whitaker Well Sampling Results 1067 NC Highway 87 N Elon, NC During this sampling event, three contaminants were detected in the well water. The standards used to determine if the water is suitable for drinking and cooking are the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L). If any contaminant concentrations exceed applicable standards for using the water for drinking and cooking, those contaminant concentrations are further analyzed to determine if the water is suitable for other household uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentrations with the applicable standards: Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L) LA85724-21 1,2-Dichloropropane 0.46 5 Hexachlorobutadiene 0.12 0.4 Tetrachloroethylene 0.46 5 µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. RECOMMENDATION: None of the contaminants detected exceeded the applicable water standards. Therefore, no restrictions on the use of this water are recommended at this time. David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW23 Lab Sample ID:LA85724-21 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508618.D 1 12/13/22 21:21 MB n/a n/a V1G6416 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane 0.46 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 69 of 122 LA8572433.21 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW23 Lab Sample ID:LA85724-21 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene 0.12 0.20 0.11 ug/l J 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene 0.46 0.50 0.22 ug/l J 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 95%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 70 of 122 LA8572433.21 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW23 Lab Sample ID:LA85724-21 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 107%70-130% 460-00-4 4-Bromofluorobenzene 107%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 71 of 122 LA8572433.21 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Ms. Patricia Routh 2049 Routh Road Burlington, North Carolina 27217 Re: Health Risk Evaluation of Water Supply Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Ms. Routh: Please find attached the Sample Analytical Results for a water sample collected from your well, identified as WW30, located at 2049 Routh Road, Burlington, Alamance County, on November 29, 2022. The sample was collected and analyzed as part of the investigation of a petroleum release in the vicinity. The water sample was analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. Contaminants were detected in the water sample, as shown on the attached Sample Analytical Results. Hexachlorobutadiene was detected above the regulatory standard in the November 2022 sample. The footnotes and quality control data in the lab results indicate that detection may have been in error. The water supply well was resampled on February 23, 2023. Hexachlorobutadiene was not detected in that sample. Because contaminants were detected in the water sample, a Health Risk Evaluation of the water supply was performed by an environmental toxicologist in the Division of Waste Management. The Health Risk Evaluation, which is attached also, compares the detected concentration of contaminants to acceptable concentrations and provides a recommendation for safe use of the water. The Health Risk Evaluation was performed on the November 2022 sample. A Health Risk Evaluation on the February 2023 sample, in which hexachlorobutadiene was not detected, will be performed soon. If you have any questions, please contact Dave Lilley at (919) 707-8241 or contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachments: Routh Sample Analytical Results Health Risk Evaluation cc: Alamance County Health Department, via email, EH.Admin@alamance-nc.com Ms. Heidi York, Alamance County Manager, via email, Heidi.York@alamance-nc.com March 6, 2023 TO: Mindy Lepard Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation Incident # 30671 Routh Well Sampling Results 2049 Routh Road Elon, NC During this sampling event, six contaminants were detected in the well water. The standards used to determine if the water is suitable for drinking and cooking are the United States Environmental Protection Agency’s Maximum Contaminant Levels (MCLs) or, if no MCLs exist, North Carolina Groundwater Standards (2L). If contaminant concentrations exceed the applicable standards for using the water for drinking and cooking, the contaminant concentrations are further analyzed to determine if the water is suitable for other non-ingestive uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. The chart below compares the detected contaminant concentrations with the applicable standards: Sample ID Contaminant Concentration (µg/L) MCL (µg/L) 2L (µg/L) LA85724-23 Hexachlorobutadiene 0.42 0.4 Acetone 1.8 6,000 Methyl Tert Butyl Ether 0.22 20 Naphthalene 0.33 6 1,2,3-Trichlorobenzene 0.31 6* 1,2,4-Trichlorobenzene 0.21 70 Shaded boxes indicate a standard has been exceeded. µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. * This value is not a 2L standard, it is a health-based value calculated using the same methodology as the 2L standard. RECOMMENDATION: The hexachlorobutadiene concentration in this well exceeds the applicable standard. Therefore, this water is not recommended for drinking or cooking at this time. No restrictions are recommended for using the water for other non-ingestive uses, such as showering, bathing, washing dishes, flushing toilets, and hand washing. David Lilley, Environmental Toxicologist Division of Waste Management, NCDEQ SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW30 Lab Sample ID:LA85724-23 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 a 2G508619.D 1 12/13/22 21:35 MB n/a n/a V2G6416 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone 1.8 10 1.2 ug/l J 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 75 of 122 LA8572433.23 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW30 Lab Sample ID:LA85724-23 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene 0.42 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether 0.22 0.50 0.068 ug/l J 91-20-3 Naphthalene 0.33 0.50 0.10 ug/l J 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene 0.31 0.50 0.16 ug/l J 120-82-1 1,2,4-Trichlorobenzene 0.21 0.50 0.17 ug/l J 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 87%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 76 of 122 LA8572433.23 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW30 Lab Sample ID:LA85724-23 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 105%70-130% 460-00-4 4-Bromofluorobenzene 97%70-130% (a) Internal standards are not within control limits biased low indicating a high bias. Insufficient sample volume remains for re-analysis. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 77 of 122 LA8572433.23 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW30 Lab Sample ID:LA88246-22 Date Sampled:02/23/23 Matrix:AQ - Water Date Received:02/28/23 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1Q01464049.D 1 03/03/23 01:03 JY n/a n/a V1Q3242 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 72 of 98 LA8824633.22 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW30 Lab Sample ID:LA88246-22 Date Sampled:02/23/23 Matrix:AQ - Water Date Received:02/28/23 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether 0.18 0.50 0.068 ug/l J 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 111%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 73 of 98 LA8824633.22 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW30 Lab Sample ID:LA88246-22 Date Sampled:02/23/23 Matrix:AQ - Water Date Received:02/28/23 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 106%70-130% 460-00-4 4-Bromofluorobenzene 97%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 74 of 98 LA8824633.22 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Douglas and William Harrison 4507 Reid Road Elon, North Carolina 27244 Re: Water Supply Sample Analytical Results Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Messrs. Harrison: Water samples were collected from the well identified as WW6, located at 1526 Shallowford Church Road, Elon, Alamance County on November 29, 2022, as part of the investigation of a petroleum release in the vicinity. The water supply well at this property is treated by a Point-of-Entry treatment system (POE) to remove contaminants. Water samples were taken at three points on the system. The water samples were analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. No contaminants were detected in the water. If you have any questions, please contact me at the address or telephone number below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachment: Harrison Sample Analytical Results cc: Resident, 1526 Shallowford Church Road, Elon, NC 27244 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW6 PRE Lab Sample ID:LA85724-7 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2G508442.D 1 12/10/22 20:06 NN n/a n/a V2G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 27 of 122 LA8572433.7 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW6 PRE Lab Sample ID:LA85724-7 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 94%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 28 of 122 LA8572433.7 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW6 PRE Lab Sample ID:LA85724-7 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 101%70-130% 460-00-4 4-Bromofluorobenzene 102%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 29 of 122 LA8572433.7 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW6 MID Lab Sample ID:LA85724-8 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 a 2G508444.D 1 12/10/22 20:35 NN n/a n/a V2G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 30 of 122 LA8572433.8 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW6 MID Lab Sample ID:LA85724-8 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 78%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 31 of 122 LA8572433.8 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW6 MID Lab Sample ID:LA85724-8 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 103%70-130% 460-00-4 4-Bromofluorobenzene 85%70-130% (a) Internal standards are not within control limits biased low indicating a high bias. Sample is ND. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 32 of 122 LA8572433.8 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW6 POST Lab Sample ID:LA85724-9 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508417.D 1 12/10/22 14:05 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 33 of 122 LA8572433.9 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW6 POST Lab Sample ID:LA85724-9 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 101%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 34 of 122 LA8572433.9 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW6 POST Lab Sample ID:LA85724-9 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 108%70-130% 460-00-4 4-Bromofluorobenzene 113%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 35 of 122 LA8572433.9 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Ms. Paula W. Mogle 1018 NC Highway 87 North Elon, North Carolina 27244 Re: Water Supply Sample Analytical Results Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Ms. Mogle: A sample was collected from the well identified as WW3A, located at 1018 NC Highway 87 North, Elon, Alamance County on November 29, 2022, as part of the investigation of a petroleum release in the vicinity. The water sample was analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. No contaminants were detected in the water. If you have any questions, please contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachment: Mogle Sample Analytical Results SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW3A Lab Sample ID:LA85724-16 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508431.D 1 12/10/22 17:27 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 54 of 122 LA8572433.16 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW3A Lab Sample ID:LA85724-16 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 101%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 55 of 122 LA8572433.16 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW3A Lab Sample ID:LA85724-16 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 110%70-130% 460-00-4 4-Bromofluorobenzene 110%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 56 of 122 LA8572433.16 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Ms. Timeka Johnson 2065 Routh Road Burlington, North Carolina 27217 Re: Water Supply Sample Analytical Results Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Ms. Johnson: A sample was collected from the well identified as WW4, located at 2065 Routh Road, Burlington, Alamance County on November 29, 2022, as part of the investigation of a petroleum release in the vicinity. The water sample was analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. No contaminants were detected in the water. If you have any questions, please contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachment: Johnson Sample Analytical Results SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW4 Lab Sample ID:LA85724-17 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508433.D 1 12/10/22 17:56 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 57 of 122 LA8572433.17 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW4 Lab Sample ID:LA85724-17 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 101%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 58 of 122 LA8572433.17 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW4 Lab Sample ID:LA85724-17 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 109%70-130% 460-00-4 4-Bromofluorobenzene 109%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 59 of 122 LA8572433.17 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Charles and Annie Pinnix 1005 NC Highway 87 North Elon, North Carolina 27244 Re: Water Supply Sample Analytical Results Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Mr. and Mrs. Pinnix: A sample was collected from the well identified as WW7, located at 1005 NC Highway 87 North, Elon, Alamance County on November 29, 2022, as part of the investigation of a petroleum release in the vicinity. The water sample was analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. No contaminants were detected in the water. If you have any questions, please contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachment: Pinnix Sample Analytical Results SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW7 Lab Sample ID:LA85724-18 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 1G508435.D 1 12/10/22 18:25 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 60 of 122 LA8572433.18 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW7 Lab Sample ID:LA85724-18 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 103%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 61 of 122 LA8572433.18 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW7 Lab Sample ID:LA85724-18 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 107%70-130% 460-00-4 4-Bromofluorobenzene 112%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 62 of 122 LA8572433.18 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Bennie L. Simmons et al. 1835 Greentree Road Burlington, North Carolina 27217 Re: Water Supply Sample Analytical Results Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Mr. Simmons: A sample was collected from the well identified as WW12, located at 1072 NC Highway 87 North, Elon, Alamance County on November 29, 2022, as part of the investigation of a petroleum release in the vicinity. The water sample was analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. No contaminants were detected in the water. If you have any questions, please contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachment: Simmons Sample Analytical Results cc: Resident, 1072 NC Highway 87 North, Elon, NC 27244 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW12 Lab Sample ID:LA85724-20 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 a 1G508439.D 1 12/10/22 19:22 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 66 of 122 LA8572433.20 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW12 Lab Sample ID:LA85724-20 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 80%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 67 of 122 LA8572433.20 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW12 Lab Sample ID:LA85724-20 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 105%70-130% 460-00-4 4-Bromofluorobenzene 87%70-130% (a) The last internal standard was not within control limits low indicating a high bias for all associated compounds. Sample was ND for these compounds. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 68 of 122 LA8572433.20 North Carolina Department of Environmental Quality | Division of Waste Management Winston-Salem Regional Office | 450 West Hanes Mill Road | Suite 300 | Winston-Salem, NC 27105 | (336) 776-9800 March 6, 2023 Larry Apple III and Laura Whitaker 2057 Routh Road Burlington, North Carolina 27217 Re: Water Supply Sample Analytical Results Tracking ID: Former Pantry #161-B (Circle K Store #2720161), Incident #30671 Dear Mr. Apple and Ms. Whitaker: A sample was collected from the well identified as WW29, located at 2057 Routh Road, Burlington, Alamance County on November 29, 2022, as part of the investigation of a petroleum release in the vicinity. The water sample was analyzed for specific target analytes (contaminants), which are listed on the attached Sample Analytical Results. No contaminants were detected in the water. If you have any questions, please contact me at the address or telephone number listed below for the Winston-Salem Regional Office. Sincerely, Mindy Lepard Hydrogeologist Winston-Salem Regional Office UST Section, Division of Waste Management, NCDEQ Attachment: Apple/Whitaker Sample Analytical Results SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:WW29 Lab Sample ID:LA85724-22 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 a 1G508443.D 1 12/10/22 20:20 NN n/a n/a V1G6411 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 72 of 122 LA8572433.22 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:WW29 Lab Sample ID:LA85724-22 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 80%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 73 of 122 LA8572433.22 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:WW29 Lab Sample ID:LA85724-22 Date Sampled:11/29/22 Matrix:AQ - Water Date Received:11/30/22 Method:SM 6200B Percent Solids:n/a Project:Pantry 161 1031 Hwy 87 N, Elon College, NC VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 106%70-130% 460-00-4 4-Bromofluorobenzene 89%70-130% (a) Internal standards are not within control limits biased low indicating a high bias. Sample is ND. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 74 of 122 LA8572433.22