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HomeMy WebLinkAboutMO-9254_40718_G_WSW_20230713_RAMSEY2HREREQ July 13, 2023 MEMORANDUM TO: Dave Lilley, Environmental Toxicologist, Division of Waste Management, 1646 Mail Service Center, Raleigh, NC 27699-1646 (FAX (919) 707-8241) FROM: Brad Newton, Mooresville Regional Office, UST Section SUBJECT: Request for Health Risk Evaluation of Water Supply Tracking ID: Incident Number: 40718 Enclosed please find the analytical results for a water sample collected on June 22, 2023, from the Ramsey water supply well, identified as WSW-2, located at 816 Woodlawn Street, Belmont, Gaston County. Please perform a health risk evaluation and send the evaluation with your recommendation and a copy of this memo to me. I will then forward the health risk evaluation and recommendation to any well users. If you have questions or need additional information, please contact me at the address or telephone number below. Thank you for your assistance. Attachment(s): Ramsey Sample Analytical Results #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92673897 FOUR POINT 76 Sample:WSW-2 Lab ID:92673897001 Collected:06/21/23 09:30 Received:06/22/23 08:31 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 06/27/23 01:55 71-43-20.50 1 Bromobenzene ND ug/L 06/27/23 01:55 108-86-10.50 1 Bromochloromethane ND ug/L 06/27/23 01:55 74-97-50.50 1 Bromodichloromethane ND ug/L 06/27/23 01:55 75-27-40.50 1 Bromoform ND ug/L 06/27/23 01:55 75-25-20.50 1 Bromomethane ND ug/L 06/27/23 01:55 74-83-95.0 1 n-Butylbenzene ND ug/L 06/27/23 01:55 104-51-80.50 1 sec-Butylbenzene ND ug/L 06/27/23 01:55 135-98-80.50 1 tert-Butylbenzene ND ug/L 06/27/23 01:55 98-06-60.50 1 Carbon tetrachloride ND ug/L 06/27/23 01:55 56-23-50.50 1 Chlorobenzene ND ug/L 06/27/23 01:55 108-90-70.50 1 Chloroethane ND ug/L 06/27/23 01:55 75-00-31.0 1 Chloroform ND ug/L 06/27/23 01:55 67-66-30.50 1 Chloromethane ND ug/L 06/27/23 01:55 74-87-31.0 1 2-Chlorotoluene ND ug/L 06/27/23 01:55 95-49-80.50 1 4-Chlorotoluene ND ug/L 06/27/23 01:55 106-43-40.50 1 1,2-Dibromo-3-chloropropane ND ug/L 06/27/23 01:55 96-12-81.0 1 Dibromochloromethane ND ug/L 06/27/23 01:55 124-48-10.50 1 1,2-Dibromoethane (EDB)ND ug/L 06/27/23 01:55 106-93-40.50 1 Dibromomethane ND ug/L 06/27/23 01:55 74-95-30.50 1 1,2-Dichlorobenzene ND ug/L 06/27/23 01:55 95-50-10.50 1 1,3-Dichlorobenzene ND ug/L 06/27/23 01:55 541-73-10.50 1 1,4-Dichlorobenzene ND ug/L 06/27/23 01:55 106-46-70.50 1 Dichlorodifluoromethane ND ug/L 06/27/23 01:55 75-71-8 L10.50 1 1,1-Dichloroethane ND ug/L 06/27/23 01:55 75-34-30.50 1 1,2-Dichloroethane ND ug/L 06/27/23 01:55 107-06-20.50 1 1,1-Dichloroethene ND ug/L 06/27/23 01:55 75-35-40.50 1 cis-1,2-Dichloroethene ND ug/L 06/27/23 01:55 156-59-20.50 1 trans-1,2-Dichloroethene ND ug/L 06/27/23 01:55 156-60-50.50 1 1,2-Dichloropropane ND ug/L 06/27/23 01:55 78-87-50.50 1 1,3-Dichloropropane ND ug/L 06/27/23 01:55 142-28-90.50 1 2,2-Dichloropropane ND ug/L 06/27/23 01:55 594-20-70.50 1 1,1-Dichloropropene ND ug/L 06/27/23 01:55 563-58-60.50 1 cis-1,3-Dichloropropene ND ug/L 06/27/23 01:55 10061-01-50.50 1 trans-1,3-Dichloropropene ND ug/L 06/27/23 01:55 10061-02-60.50 1 Diisopropyl ether ND ug/L 06/27/23 01:55 108-20-30.50 1 Ethylbenzene ND ug/L 06/27/23 01:55 100-41-40.50 1 Hexachloro-1,3-butadiene ND ug/L 06/27/23 01:55 87-68-32.0 1 Isopropylbenzene (Cumene)ND ug/L 06/27/23 01:55 98-82-80.50 1 Methylene Chloride ND ug/L 06/27/23 01:55 75-09-22.0 1 Methyl-tert-butyl ether 0.68 ug/L 06/27/23 01:55 1634-04-40.50 1 Naphthalene ND ug/L 06/27/23 01:55 91-20-32.0 1 n-Propylbenzene ND ug/L 06/27/23 01:55 103-65-10.50 1 Styrene ND ug/L 06/27/23 01:55 100-42-50.50 1 1,1,1,2-Tetrachloroethane ND ug/L 06/27/23 01:55 630-20-60.50 1 1,1,2,2-Tetrachloroethane ND ug/L 06/27/23 01:55 79-34-50.50 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/28/2023 09:42 AM Pace Analytical Services, LLC 2225 Riverside Dr. Asheville, NC 28804 (828)254-7176 Page 4 of 27 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92673897 FOUR POINT 76 Sample:WSW-2 Lab ID:92673897001 Collected:06/21/23 09:30 Received:06/22/23 08:31 Matrix:Water Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Tetrachloroethene ND ug/L 06/27/23 01:55 127-18-40.50 1 Toluene ND ug/L 06/27/23 01:55 108-88-30.50 1 1,2,3-Trichlorobenzene ND ug/L 06/27/23 01:55 87-61-62.0 1 1,2,4-Trichlorobenzene ND ug/L 06/27/23 01:55 120-82-12.0 1 1,1,1-Trichloroethane ND ug/L 06/27/23 01:55 71-55-60.50 1 1,1,2-Trichloroethane ND ug/L 06/27/23 01:55 79-00-50.50 1 Trichloroethene ND ug/L 06/27/23 01:55 79-01-60.50 1 Trichlorofluoromethane ND ug/L 06/27/23 01:55 75-69-41.0 1 1,2,3-Trichloropropane ND ug/L 06/27/23 01:55 96-18-40.50 1 1,2,4-Trimethylbenzene ND ug/L 06/27/23 01:55 95-63-60.50 1 1,3,5-Trimethylbenzene ND ug/L 06/27/23 01:55 108-67-80.50 1 Vinyl chloride ND ug/L 06/27/23 01:55 75-01-41.0 1 m&p-Xylene ND ug/L 06/27/23 01:55 179601-23-11.0 1 o-Xylene ND ug/L 06/27/23 01:55 95-47-60.50 1 Surrogates 1,2-Dichloroethane-d4 (S)97 %06/27/23 01:55 17060-07-070-130 1 4-Bromofluorobenzene (S)100 %06/27/23 01:55 460-00-470-130 1 Toluene-d8 (S)101 %06/27/23 01:55 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/28/2023 09:42 AM Pace Analytical Services, LLC 2225 Riverside Dr. Asheville, NC 28804 (828)254-7176 Page 5 of 27 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92673897 FOUR POINT 76 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 782994 SM 6200B SM 6200B 6200B MSV Laboratory:Pace Analytical Services - Charlotte Associated Lab Samples:92673897001, 92673897002, 92673897003, 92673897004, 92673897005, 92673897006, 92673897007 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4061186 Associated Lab Samples:92673897001, 92673897002, 92673897003, 92673897004, 92673897005, 92673897006, 92673897007 Matrix:Water Analyzed 1,1,1,2-Tetrachloroethane ug/L ND 0.50 06/27/23 00:43 1,1,1-Trichloroethane ug/L ND 0.50 06/27/23 00:43 1,1,2,2-Tetrachloroethane ug/L ND 0.50 06/27/23 00:43 1,1,2-Trichloroethane ug/L ND 0.50 06/27/23 00:43 1,1-Dichloroethane ug/L ND 0.50 06/27/23 00:43 1,1-Dichloroethene ug/L ND 0.50 06/27/23 00:43 1,1-Dichloropropene ug/L ND 0.50 06/27/23 00:43 1,2,3-Trichlorobenzene ug/L ND 2.0 06/27/23 00:43 1,2,3-Trichloropropane ug/L ND 0.50 06/27/23 00:43 1,2,4-Trichlorobenzene ug/L ND 2.0 06/27/23 00:43 1,2,4-Trimethylbenzene ug/L ND 0.50 06/27/23 00:43 1,2-Dibromo-3-chloropropane ug/L ND 1.0 06/27/23 00:43 1,2-Dibromoethane (EDB)ug/L ND 0.50 06/27/23 00:43 1,2-Dichlorobenzene ug/L ND 0.50 06/27/23 00:43 1,2-Dichloroethane ug/L ND 0.50 06/27/23 00:43 1,2-Dichloropropane ug/L ND 0.50 06/27/23 00:43 1,3,5-Trimethylbenzene ug/L ND 0.50 06/27/23 00:43 1,3-Dichlorobenzene ug/L ND 0.50 06/27/23 00:43 1,3-Dichloropropane ug/L ND 0.50 06/27/23 00:43 1,4-Dichlorobenzene ug/L ND 0.50 06/27/23 00:43 2,2-Dichloropropane ug/L ND 0.50 06/27/23 00:43 2-Chlorotoluene ug/L ND 0.50 06/27/23 00:43 4-Chlorotoluene ug/L ND 0.50 06/27/23 00:43 Benzene ug/L ND 0.50 06/27/23 00:43 Bromobenzene ug/L ND 0.50 06/27/23 00:43 Bromochloromethane ug/L ND 0.50 06/27/23 00:43 Bromodichloromethane ug/L ND 0.50 06/27/23 00:43 Bromoform ug/L ND 0.50 06/27/23 00:43 Bromomethane ug/L ND 5.0 06/27/23 00:43 Carbon tetrachloride ug/L ND 0.50 06/27/23 00:43 Chlorobenzene ug/L ND 0.50 06/27/23 00:43 Chloroethane ug/L ND 1.0 06/27/23 00:43 Chloroform ug/L ND 0.50 06/27/23 00:43 Chloromethane ug/L ND 1.0 06/27/23 00:43 cis-1,2-Dichloroethene ug/L ND 0.50 06/27/23 00:43 cis-1,3-Dichloropropene ug/L ND 0.50 06/27/23 00:43 Dibromochloromethane ug/L ND 0.50 06/27/23 00:43 Dibromomethane ug/L ND 0.50 06/27/23 00:43 Dichlorodifluoromethane ug/L ND 0.50 06/27/23 00:43 Diisopropyl ether ug/L ND 0.50 06/27/23 00:43 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/28/2023 09:42 AM Pace Analytical Services, LLC 2225 Riverside Dr. Asheville, NC 28804 (828)254-7176 Page 18 of 27 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92673897 FOUR POINT 76 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK:4061186 Associated Lab Samples:92673897001, 92673897002, 92673897003, 92673897004, 92673897005, 92673897006, 92673897007 Matrix:Water Analyzed Ethylbenzene ug/L ND 0.50 06/27/23 00:43 Hexachloro-1,3-butadiene ug/L ND 2.0 06/27/23 00:43 Isopropylbenzene (Cumene)ug/L ND 0.50 06/27/23 00:43 m&p-Xylene ug/L ND 1.0 06/27/23 00:43 Methyl-tert-butyl ether ug/L ND 0.50 06/27/23 00:43 Methylene Chloride ug/L ND 2.0 06/27/23 00:43 n-Butylbenzene ug/L ND 0.50 06/27/23 00:43 n-Propylbenzene ug/L ND 0.50 06/27/23 00:43 Naphthalene ug/L ND 2.0 06/27/23 00:43 o-Xylene ug/L ND 0.50 06/27/23 00:43 sec-Butylbenzene ug/L ND 0.50 06/27/23 00:43 Styrene ug/L ND 0.50 06/27/23 00:43 tert-Butylbenzene ug/L ND 0.50 06/27/23 00:43 Tetrachloroethene ug/L ND 0.50 06/27/23 00:43 Toluene ug/L ND 0.50 06/27/23 00:43 trans-1,2-Dichloroethene ug/L ND 0.50 06/27/23 00:43 trans-1,3-Dichloropropene ug/L ND 0.50 06/27/23 00:43 Trichloroethene ug/L ND 0.50 06/27/23 00:43 Trichlorofluoromethane ug/L ND 1.0 06/27/23 00:43 Vinyl chloride ug/L ND 1.0 06/27/23 00:43 1,2-Dichloroethane-d4 (S)%98 70-130 06/27/23 00:43 4-Bromofluorobenzene (S)%99 70-130 06/27/23 00:43 Toluene-d8 (S)%100 70-130 06/27/23 00:43 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4061187LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 20.720 104 60-140 1,1,1-Trichloroethane ug/L 21.520 108 60-140 1,1,2,2-Tetrachloroethane ug/L 21.620 108 60-140 1,1,2-Trichloroethane ug/L 21.520 108 60-140 1,1-Dichloroethane ug/L 20.920 104 60-140 1,1-Dichloroethene ug/L 22.320 112 60-140 1,1-Dichloropropene ug/L 22.920 115 60-140 1,2,3-Trichlorobenzene ug/L 21.820 109 60-140 1,2,3-Trichloropropane ug/L 20.420 102 60-140 1,2,4-Trichlorobenzene ug/L 20.920 104 60-140 1,2,4-Trimethylbenzene ug/L 20.120 100 60-140 1,2-Dibromo-3-chloropropane ug/L 19.020 95 60-140 1,2-Dibromoethane (EDB)ug/L 20.820 104 60-140 1,2-Dichlorobenzene ug/L 21.420 107 60-140 1,2-Dichloroethane ug/L 21.320 107 60-140 1,2-Dichloropropane ug/L 20.520 103 60-140 1,3,5-Trimethylbenzene ug/L 20.920 104 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/28/2023 09:42 AM Pace Analytical Services, LLC 2225 Riverside Dr. Asheville, NC 28804 (828)254-7176 Page 19 of 27 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92673897 FOUR POINT 76 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4061187LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichlorobenzene ug/L 20.620 103 60-140 1,3-Dichloropropane ug/L 20.720 104 60-140 1,4-Dichlorobenzene ug/L 21.120 105 60-140 2,2-Dichloropropane ug/L 19.220 96 60-140 2-Chlorotoluene ug/L 21.320 106 60-140 4-Chlorotoluene ug/L 20.720 104 60-140 Benzene ug/L 20.620 103 60-140 Bromobenzene ug/L 20.120 101 60-140 Bromochloromethane ug/L 20.320 102 60-140 Bromodichloromethane ug/L 20.120 101 60-140 Bromoform ug/L 20.120 100 60-140 Bromomethane ug/L 15.220 76 60-140 Carbon tetrachloride ug/L 20.420 102 60-140 Chlorobenzene ug/L 20.320 102 60-140 Chloroethane ug/L 22.520 113 60-140 Chloroform ug/L 20.820 104 60-140 Chloromethane ug/L 21.320 106 60-140 cis-1,2-Dichloroethene ug/L 19.920 100 60-140 cis-1,3-Dichloropropene ug/L 20.420 102 60-140 Dibromochloromethane ug/L 19.720 99 60-140 Dibromomethane ug/L 20.120 101 60-140 Dichlorodifluoromethane ug/L 29.9 L12014960-140 Diisopropyl ether ug/L 19.020 95 60-140 Ethylbenzene ug/L 20.120 100 60-140 Hexachloro-1,3-butadiene ug/L 20.720 104 60-140 Isopropylbenzene (Cumene)ug/L 20.520 102 60-140 m&p-Xylene ug/L 39.640 99 60-140 Methyl-tert-butyl ether ug/L 20.720 103 60-140 Methylene Chloride ug/L 20.320 102 60-140 n-Butylbenzene ug/L 21.120 105 60-140 n-Propylbenzene ug/L 20.520 102 60-140 Naphthalene ug/L 21.620 108 60-140 o-Xylene ug/L 19.420 97 60-140 sec-Butylbenzene ug/L 20.520 102 60-140 Styrene ug/L 20.020 100 60-140 tert-Butylbenzene ug/L 16.120 81 60-140 Tetrachloroethene ug/L 19.520 98 60-140 Toluene ug/L 19.120 96 60-140 trans-1,2-Dichloroethene ug/L 21.020 105 60-140 trans-1,3-Dichloropropene ug/L 20.420 102 60-140 Trichloroethene ug/L 20.620 103 60-140 Trichlorofluoromethane ug/L 22.420 112 60-140 Vinyl chloride ug/L 19.120 95 60-140 1,2-Dichloroethane-d4 (S)%104 70-130 4-Bromofluorobenzene (S)%100 70-130 Toluene-d8 (S)%99 70-130 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/28/2023 09:42 AM Pace Analytical Services, LLC 2225 Riverside Dr. Asheville, NC 28804 (828)254-7176 Page 20 of 27 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92673897 FOUR POINT 76 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4061188MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92673894001 4061189 MSD Result MSD % Rec RPD MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 20 108 60-140114 620ND21.6 22.8 1,1,1-Trichloroethane ug/L 20 123 60-140129 520ND24.5 25.9 1,1,2,2-Tetrachloroethane ug/L 20 110 60-140116 520ND22.0 23.2 1,1,2-Trichloroethane ug/L 20 112 60-140120 720ND22.4 24.0 1,1-Dichloroethane ug/L 20 118 60-140125 620ND23.6 25.0 1,1-Dichloroethene ug/L 20 130 60-140136 520ND25.9 27.2 1,1-Dichloropropene ug/L M12013360-140141 620ND26.6 28.2 1,2,3-Trichlorobenzene ug/L 20 118 60-140124 520ND23.5 24.8 1,2,3-Trichloropropane ug/L 20 105 60-140111 520ND21.1 22.1 1,2,4-Trichlorobenzene ug/L 20 117 60-140120 320ND23.5 24.1 1,2,4-Trimethylbenzene ug/L 20 109 60-140116 620ND21.9 23.2 1,2-Dibromo-3-chloropropane ug/L 20 97 60-140102 520ND19.4 20.4 1,2-Dibromoethane (EDB)ug/L 20 107 60-140114 620ND21.4 22.8 1,2-Dichlorobenzene ug/L 20 113 60-140118 420ND22.6 23.5 1,2-Dichloroethane ug/L 20 117 60-140123 520ND23.4 24.7 1,2-Dichloropropane ug/L 20 111 60-140121 820ND22.3 24.3 1,3,5-Trimethylbenzene ug/L 20 113 60-140118 420ND22.7 23.7 1,3-Dichlorobenzene ug/L 20 112 60-140115 220ND22.5 23.0 1,3-Dichloropropane ug/L 20 111 60-140118 620ND22.2 23.6 1,4-Dichlorobenzene ug/L 20 111 60-140116 520ND22.1 23.2 2,2-Dichloropropane ug/L 20 120 60-140126 520ND24.1 25.3 2-Chlorotoluene ug/L 20 112 60-140117 420ND22.5 23.5 4-Chlorotoluene ug/L 20 110 60-140114 420ND21.9 22.9 Benzene ug/L 20 114 60-140122 720ND22.7 24.3 Bromobenzene ug/L 20 106 60-140111 520ND21.2 22.2 Bromochloromethane ug/L 20 110 60-140116 520ND21.9 23.1 Bromodichloromethane ug/L 20 108 60-140117 820ND21.5 23.4 Bromoform ug/L 20 103 60-140108 520ND20.6 21.6 Bromomethane ug/L 20 96 60-140102 620ND19.2 20.4 Carbon tetrachloride ug/L 20 117 60-140124 720ND23.3 24.9 Chlorobenzene ug/L 20 108 60-140115 620ND21.6 23.0 Chloroethane ug/L 20 131 60-140137 420ND26.2 27.4 Chloroform ug/L 20 115 60-140125 820ND23.1 25.0 Chloromethane ug/L 20 127 60-140131 320ND25.5 26.2 cis-1,2-Dichloroethene ug/L 20 115 60-140121 4203.5 26.5 27.6 cis-1,3-Dichloropropene ug/L 20 112 60-140118 520ND22.4 23.5 Dibromochloromethane ug/L 20 104 60-140112 720ND20.9 22.3 Dibromomethane ug/L 20 106 60-140115 820ND21.2 23.0 Dichlorodifluoromethane ug/L M02018260-140188 320ND36.5 37.6 Diisopropyl ether ug/L 20 106 60-140112 620ND21.1 22.4 Ethylbenzene ug/L 20 108 60-140115 720ND21.5 23.1 Hexachloro-1,3-butadiene ug/L 20 127 60-140130 220ND25.4 25.9 Isopropylbenzene (Cumene)ug/L 20 115 60-140120 420ND23.0 24.0 m&p-Xylene ug/L 40 107 60-140113 540ND42.9 45.1 Methyl-tert-butyl ether ug/L 20 111 60-140117 420ND22.3 23.3 Methylene Chloride ug/L 20 111 60-140119 720ND22.2 23.7 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/28/2023 09:42 AM Pace Analytical Services, LLC 2225 Riverside Dr. Asheville, NC 28804 (828)254-7176 Page 21 of 27 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92673897 FOUR POINT 76 Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4061188MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92673894001 4061189 MSD Result MSD % Rec RPD MSDMS Spike Conc. n-Butylbenzene ug/L 20 123 60-140125 220ND24.7 25.1 n-Propylbenzene ug/L 20 114 60-140117 320ND22.7 23.4 Naphthalene ug/L 20 110 60-140114 420ND22.0 22.8 o-Xylene ug/L 20 103 60-140111 720ND20.7 22.3 sec-Butylbenzene ug/L 20 116 60-140121 420ND23.3 24.1 Styrene ug/L 20 104 60-140111 720ND20.7 22.2 tert-Butylbenzene ug/L 20 90 60-14094 420ND18.1 18.9 Tetrachloroethene ug/L 20 108 60-140116 720ND21.7 23.2 Toluene ug/L 20 104 60-140112 720ND20.8 22.3 trans-1,2-Dichloroethene ug/L 20 121 60-140128 520ND24.2 25.5 trans-1,3-Dichloropropene ug/L 20 109 60-140118 820ND21.9 23.6 Trichloroethene ug/L 20 115 60-140123 620ND23.0 24.5 Trichlorofluoromethane ug/L 20 134 60-140140 520ND26.7 28.0 Vinyl chloride ug/L 20 114 60-140120 520ND22.8 24.1 1,2-Dichloroethane-d4 (S)%105 70-130107 4-Bromofluorobenzene (S)%102 70-13099 Toluene-d8 (S)%100 70-130100 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 06/28/2023 09:42 AM Pace Analytical Services, LLC 2225 Riverside Dr. Asheville, NC 28804 (828)254-7176 Page 22 of 27