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HomeMy WebLinkAboutWS-3285_9846_CA_HRE_20230912_ResultsNorth 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 September 12, 2023 Ms. Carla G. Duszlak 1211 May Court Burlington, NC 27215 Re: Health Risk Evaluation of Water Supply Tracking ID: #9846 Dear Ms. Nelson: Please find attached the Sample Analytical Results for a water sample collected from your well, identified as #8458, located at 1606 NC Highway 61 South, Whitsett, NC 27377, Guilford County, on May 17, 2023. The sample was collected by Pyramid Environmental as part of a groundwater monitoring event and analyzed by Waypoint Analytical. 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 Gene Mao at the Guilford County Department of Health and Human Services, 400 W. Market Street, Suite 300, North Carolina 27401 and/or (336) 641-3589. Sincerely, James W. Brown Winston-Salem Regional Supervisor UST Section, Division of Waste Management, NCDEQ Attachments: Well Water Sample Analytical Results Health Risk Evaluation cc: Ms. Carla G. Duszlak, Water Supply Well Owner Dr. Iulia Vann, Director, Guilford County Department of Public Health Mr. Michael Halford, County Manager, Guilford County September 12, 2023 TO: Gene Mao Guilford County Department of Health and Human Services for Winston-Salem Regional Office NC UST Section RE: Health Risk Evaluation Incident # 9846 1606 NC Highway 61 South Well Sampling Results Whitsett, 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) 96583 Chloroform 1.72 80* µg/L – Stands for micrograms of contaminant per liter of water and is roughly equivalent to parts per billion. * As total trihalomethanes. 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 , REPORT OF ANALYSISReport Number : Project Information : NC 27416-0265 23-139-0016 01168 Pyramid Environmental & Engineering, P.C. PO Box 16265 Mika Trifunovic Greensboro Received : 05/19/2023 Taylor's Groc Report Date : 05/30/2023 Sample ID : Lab No : Sampled:SW-3 96583 Matrix: 5/17/2023 15:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V33727 05/25/23 09:00 <1.80 µg/L 1.80 10.0Acetone 1 05/25/23 23:37 V33730MSA <0.180 µg/L 0.180 0.500Benzene 1 05/25/23 23:37 V33730MSA <0.210 µg/L 0.210 0.500Bromobenzene 1 05/25/23 23:37 V33730MSA <0.420 µg/L 0.420 1.00Bromochloromethane 1 05/25/23 23:37 V33730MSA <0.160 µg/L 0.160 0.500Bromodichloromethane 1 05/25/23 23:37 V33730MSA <1.50 µg/L 1.50 5.00Bromoform 1 05/25/23 23:37 V33730MSA <0.280 µg/L 0.280 1.00Bromomethane 1 05/25/23 23:37 V33730MSA <0.180 µg/L 0.180 0.500n-Butylbenzene 1 05/25/23 23:37 V33730MSA <0.200 µg/L 0.200 0.500 sec-Butyl benzene 1 05/25/23 23:37 V33730MSA <0.920 µg/L 0.920 2.00tert-Butyl benzene 1 05/25/23 23:37 V33730MSA <0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 05/25/23 23:37 V33730MSA <0.190 µg/L 0.190 0.500Chlorobenzene 1 05/25/23 23:37 V33730MSA <0.190 µg/L 0.190 0.500Chlorodibromomethane 1 05/25/23 23:37 V33730MSA <0.430 µg/L 0.430 1.00Chloroethane 1 05/25/23 23:37 V33730MSA 1.72 µg/L 0.220 0.500Chloroform 1 05/25/23 23:37 V33730MSA <0.220 µg/L 0.220 0.500 Chloromethane 1 05/25/23 23:37 V33730MSA <0.200 µg/L 0.200 0.5002-Chlorotoluene 1 05/25/23 23:37 V33730MSA <0.200 µg/L 0.200 0.5004-Chlorotoluene 1 05/25/23 23:37 V33730MSA <0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 05/25/23 23:37 V33730MSA <1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 05/25/23 23:37 V33730MSA <0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 05/25/23 23:37 V33730MSA <0.230 M µg/L 0.230 0.500Dibromomethane 1 05/25/23 23:37 V33730MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQLMinimum valueM Page 23 of 41 , REPORT OF ANALYSISReport Number : Project Information : NC 27416-0265 23-139-0016 01168 Pyramid Environmental & Engineering, P.C. PO Box 16265 Mika Trifunovic Greensboro Received : 05/19/2023 Taylor's Groc Report Date : 05/30/2023 Sample ID : Lab No : Sampled:SW-3 96583 Matrix: 5/17/2023 15:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V33727 05/25/23 09:00 <0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 05/25/23 23:37 V33730MSA <0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 05/25/23 23:37 V33730MSA <0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 05/25/23 23:37 V33730MSA <1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 05/25/23 23:37 V33730MSA <0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 05/25/23 23:37 V33730MSA <0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 05/25/23 23:37 V33730MSA <0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 05/25/23 23:37 V33730MSA <0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 05/25/23 23:37 V33730MSA <0.180 µg/L 0.180 0.500 trans-1,2-Dichloroethene 1 05/25/23 23:37 V33730MSA <0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 05/25/23 23:37 V33730MSA <0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 05/25/23 23:37 V33730MSA <0.210 µg/L 0.210 2.002,2-Dichloropropane 1 05/25/23 23:37 V33730MSA <0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 05/25/23 23:37 V33730MSA <0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 05/25/23 23:37 V33730MSA <0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 05/25/23 23:37 V33730MSA <42.0 µg/L 42.0 200 Ethanol 1 05/25/23 23:37 V33730MSA <0.170 µg/L 0.170 0.500Ethylbenzene 1 05/25/23 23:37 V33730MSA <0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 05/25/23 23:37 V33730MSA <0.380 µg/L 0.380 1.002-Hexanone 1 05/25/23 23:37 V33730MSA <0.180 µg/L 0.180 0.500Isopropylbenzene 1 05/25/23 23:37 V33730MSA <0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 05/25/23 23:37 V33730MSA <0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 05/25/23 23:37 V33730MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQLMinimum valueM Page 24 of 41 , REPORT OF ANALYSISReport Number : Project Information : NC 27416-0265 23-139-0016 01168 Pyramid Environmental & Engineering, P.C. PO Box 16265 Mika Trifunovic Greensboro Received : 05/19/2023 Taylor's Groc Report Date : 05/30/2023 Sample ID : Lab No : Sampled:SW-3 96583 Matrix: 5/17/2023 15:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V33727 05/25/23 09:00 <0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 05/25/23 23:37 V33730MSA <0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 05/25/23 23:37 V33730MSA <0.330 µg/L 0.330 2.00Methylene Chloride 1 05/25/23 23:37 V33730MSA <0.470 µg/L 0.470 1.00Naphthalene 1 05/25/23 23:37 V33730MSA <0.190 µg/L 0.190 0.500n-Propylbenzene 1 05/25/23 23:37 V33730MSA <0.220 µg/L 0.220 0.500Styrene 1 05/25/23 23:37 V33730MSA <0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 05/25/23 23:37 V33730MSA <0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 05/25/23 23:37 V33730MSA <0.220 µg/L 0.220 0.500 Tetrachloroethene 1 05/25/23 23:37 V33730MSA <0.220 µg/L 0.220 0.500Toluene 1 05/25/23 23:37 V33730MSA <0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 05/25/23 23:37 V33730MSA <0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 05/25/23 23:37 V33730MSA <0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 05/25/23 23:37 V33730MSA <0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 05/25/23 23:37 V33730MSA <0.180 µg/L 0.180 0.500Trichloroethene 1 05/25/23 23:37 V33730MSA <0.180 µg/L 0.180 0.500 Trichlorofluoromethane 1 05/25/23 23:37 V33730MSA <0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 05/25/23 23:37 V33730MSA <0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 05/25/23 23:37 V33730MSA <0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 05/25/23 23:37 V33730MSA <1.00 µg/L 1.00 5.00Vinyl Acetate 1 05/25/23 23:37 V33730MSA <0.170 µg/L 0.170 0.500Vinyl Chloride 1 05/25/23 23:37 V33730MSA <0.210 µg/L 0.210 0.500o-Xylene 1 05/25/23 23:37 V33730MSA Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQLMinimum valueM Page 25 of 41 , REPORT OF ANALYSISReport Number : Project Information : NC 27416-0265 23-139-0016 01168 Pyramid Environmental & Engineering, P.C. PO Box 16265 Mika Trifunovic Greensboro Received : 05/19/2023 Taylor's Groc Report Date : 05/30/2023 Sample ID : Lab No : Sampled:SW-3 96583 Matrix: 5/17/2023 15:00 Aqueous Analytical Method: Prep Method: Test Results Units MDL MQL By Analytical Batch Date / Time Analyzed DF 6200 PT 6200B Prep Batch(es):V33727 05/25/23 09:00 <0.420 µg/L 0.420 1.00m,p-Xylene 1 05/25/23 23:37 V33730MSA <0.21 µg/L 0.210 0.500Xylene (Total)1 05/25/23 23:37 V33730 Surrogate: 4-Bromofluorobenzene 101 Limits: 70-130%05/24/23 03:561 MSA V33606 Surrogate: Dibromofluoromethane 99.6 Limits: 70-130%05/24/23 03:561 MSA V33606 Surrogate: 1,2-Dichloroethane - d4 99.6 Limits: 70-130%05/24/23 03:561 MSA V33606 Surrogate: Toluene-d8 100 Limits: 70-130%05/24/23 03:561 MSA V33606 Surrogate: 4-Bromofluorobenzene 106 Limits: 70-130%05/25/23 23:371 MSA V33730 Surrogate: Dibromofluoromethane 97.6 Limits: 70-130%05/25/23 23:371 MSA V33730 Surrogate: 1,2-Dichloroethane - d4 98.2 Limits: 70-130%05/25/23 23:371 MSA V33730 Surrogate: Toluene-d8 96.4 Limits: 70-130%05/25/23 23:371 MSA V33730 Qualifiers/ Definitions Estimated valueJDilution FactorDF Method Quantitation LimitMQLMinimum valueM Page 26 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33606QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33605 Associated Lab Samples: 96579, 96580, 96581, 96582 LRB-V33605 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/23/23 23:5310.01.80<1.80µg/LAcetone 05/23/23 23:530.5000.180<0.180µg/LBenzene 05/23/23 23:530.5000.210<0.210µg/LBromobenzene 05/23/23 23:531.000.420<0.420µg/LBromochloromethane 05/23/23 23:530.5000.160<0.160µg/LBromodichloromethane 05/23/23 23:535.001.50<1.50µg/LBromoform 05/23/23 23:531.000.280<0.280µg/LBromomethane 05/23/23 23:530.5000.180<0.180µg/Ln-Butylbenzene 05/23/23 23:530.5000.200<0.200µg/Lsec-Butyl benzene 05/23/23 23:532.000.920<0.920µg/Ltert-Butyl benzene 05/23/23 23:530.5000.180<0.180µg/LCarbon Tetrachloride 05/23/23 23:530.5000.190<0.190µg/LChlorobenzene 05/23/23 23:530.5000.190<0.190µg/LChlorodibromomethane 05/23/23 23:531.000.430<0.430µg/LChloroethane 05/23/23 23:530.5000.220<0.220µg/LChloroform 05/23/23 23:530.5000.220<0.220µg/LChloromethane 05/23/23 23:530.5000.200<0.200µg/L2-Chlorotoluene 05/23/23 23:530.5000.200<0.200µg/L4-Chlorotoluene 05/23/23 23:530.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE) 05/23/23 23:532.001.10<1.10µg/L1,2-Dibromo-3-Chloropropane 05/23/23 23:530.5000.200<0.200µg/L1,2-Dibromoethane 05/23/23 23:530.5000.230<0.230µg/LDibromomethane 05/23/23 23:530.5000.220<0.220µg/L1,2-Dichlorobenzene 05/23/23 23:530.5000.190<0.190µg/L1,3-Dichlorobenzene 05/23/23 23:530.5000.210<0.210µg/L1,4-Dichlorobenzene 05/23/23 23:535.001.20<1.20µg/LDichlorodifluoromethane 05/23/23 23:530.5000.240<0.240µg/L1,1-Dichloroethane Page 1 of 13Date:05/30/2023 02:55 PM Page 27 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33606QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33605 Associated Lab Samples: 96579, 96580, 96581, 96582 LRB-V33605 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/23/23 23:530.5000.150<0.150µg/L1,2-Dichloroethane 05/23/23 23:530.5000.150<0.150µg/L1,1-Dichloroethene 05/23/23 23:530.5000.200<0.200µg/Lcis-1,2-Dichloroethene 05/23/23 23:530.5000.180<0.180µg/Ltrans-1,2-Dichloroethene 05/23/23 23:530.5000.190<0.190µg/L1,2-Dichloropropane 05/23/23 23:530.5000.130<0.130µg/L1,3-Dichloropropane 05/23/23 23:532.000.210<0.210µg/L2,2-Dichloropropane 05/23/23 23:530.5000.200<0.200µg/L1,1-Dichloropropene 05/23/23 23:530.5000.210<0.210µg/Lcis-1,3-Dichloropropene 05/23/23 23:530.5000.150<0.150µg/Ltrans-1,3-Dichloropropene 05/23/23 23:5320042.0<42.0µg/LEthanol 05/23/23 23:530.5000.170<0.170µg/LEthylbenzene 05/23/23 23:533.000.350<0.350µg/LHexachlorobutadiene 05/23/23 23:531.000.380<0.380µg/L2-Hexanone 05/23/23 23:530.5000.180<0.180µg/LIsopropylbenzene 05/23/23 23:530.5000.089<0.089µg/L4-Isopropyl toluene 05/23/23 23:535.000.710<0.710µg/LMethyl Ethyl Ketone (MEK) 05/23/23 23:531.000.140<0.140µg/LMethyl tert-butyl ether (MTBE) 05/23/23 23:531.000.078<0.078µg/L4-Methyl-2-Pentanone 05/23/23 23:532.000.330<0.330µg/LMethylene Chloride 05/23/23 23:531.000.470<0.470µg/LNaphthalene 05/23/23 23:530.5000.190<0.190µg/Ln-Propylbenzene 05/23/23 23:530.5000.220<0.220µg/LStyrene 05/23/23 23:530.5000.160<0.160µg/L1,1,1,2-Tetrachloroethane 05/23/23 23:530.5000.160<0.160µg/L1,1,2,2-Tetrachloroethane 05/23/23 23:530.5000.220<0.220µg/LTetrachloroethene 05/23/23 23:530.5000.220<0.220µg/LToluene Page 2 of 13Date:05/30/2023 02:55 PM Page 28 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33606QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33605 Associated Lab Samples: 96579, 96580, 96581, 96582 LRB-V33605 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/23/23 23:530.5000.380<0.380µg/L1,2,3-Trichlorobenzene 05/23/23 23:530.5000.310<0.310µg/L1,2,4-Trichlorobenzene 05/23/23 23:530.5000.160<0.160µg/L1,1,1-Trichloroethane 05/23/23 23:530.5000.096<0.096µg/L1,1,2-Trichloroethane 05/23/23 23:530.5000.180<0.180µg/LTrichloroethene 05/23/23 23:530.5000.180<0.180µg/LTrichlorofluoromethane 05/23/23 23:530.5000.270<0.270µg/L1,2,3-Trichloropropane 05/23/23 23:530.5000.190<0.190µg/L1,2,4-Trimethylbenzene 05/23/23 23:530.5000.180<0.180µg/L1,3,5-Trimethylbenzene 05/23/23 23:535.001.00<1.00µg/LVinyl Acetate 05/23/23 23:530.5000.170<0.170µg/LVinyl Chloride 05/23/23 23:530.5000.210<0.210µg/Lo-Xylene 05/23/23 23:531.000.420<0.420µg/Lm,p-Xylene 05/23/23 23:534-Bromofluorobenzene (S)98.8 70-130 05/23/23 23:53Dibromofluoromethane (S)99.2 70-130 05/23/23 23:531,2-Dichloroethane - d4 (S)98.0 70-130 05/23/23 23:53Toluene-d8 (S)101 70-130 LCS-V33605 LCSD-V33605Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 32.6 81.584.033.640.0µg/LAcetone 40-160 3.0 20.0 18.3 91.595.519.120.0µg/LBenzene 70-130 4.2 20.0 18.1 90.594.018.820.0µg/LBromobenzene 70-130 3.7 20.0 20.1 10110320.520.0µg/LBromochloromethane 70-130 1.9 20.0 17.9 89.591.518.320.0µg/LBromodichloromethane 70-130 2.2 20.0 Page 3 of 13Date:05/30/2023 02:55 PM Page 29 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33606QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33605 LCS-V33605 LCSD-V33605Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 18.3 91.591.518.320.0µg/LBromoform 70-130 0.0 20.0 22.9 11511723.420.0µg/LBromomethane 60-140 2.1 20.0 18.3 91.598.519.720.0µg/Ln-Butylbenzene 70-130 7.3 20.0 17.8 89.095.019.020.0µg/Lsec-Butyl benzene 70-130 6.5 20.0 18.1 90.595.519.120.0µg/Ltert-Butyl benzene 70-130 5.3 20.0 19.6 98.010020.020.0µg/LCarbon Tetrachloride 70-130 2.0 20.0 18.2 91.094.018.820.0µg/LChlorobenzene 70-130 3.2 20.0 18.5 92.594.018.820.0µg/LChlorodibromomethane 70-130 1.6 20.0 20.7 10411122.120.0µg/LChloroethane 60-140 6.5 20.0 19.0 95.096.519.320.0µg/LChloroform 70-130 1.5 20.0 18.9 94.596.019.220.0µg/LChloromethane 60-140 1.5 20.0 18.1 90.595.019.020.0µg/L2-Chlorotoluene 70-130 4.8 20.0 18.3 91.597.019.420.0µg/L4-Chlorotoluene 70-130 5.8 20.0 18.4 92.092.518.520.0µg/LDi-Isopropyl Ether (DIPE)70-130 0.5 20.0 18.4 92.010220.420.0µg/L1,2-Dibromo-3-Chloropropane 70-130 10.3 20.0 18.8 94.095.519.120.0µg/L1,2-Dibromoethane 70-130 1.5 20.0 18.4 92.094.518.920.0µg/LDibromomethane 70-130 2.6 20.0 18.7 93.598.019.620.0µg/L1,2-Dichlorobenzene 70-130 4.6 20.0 18.2 91.097.519.520.0µg/L1,3-Dichlorobenzene 70-130 6.8 20.0 18.7 93.598.019.620.0µg/L1,4-Dichlorobenzene 70-130 4.6 20.0 16.3 81.589.017.820.0µg/LDichlorodifluoromethane 60-140 8.7 20.0 19.0 95.098.519.720.0µg/L1,1-Dichloroethane 70-130 3.6 20.0 20.1 10110020.020.0µg/L1,2-Dichloroethane 70-130 0.4 20.0 18.7 93.596.519.320.0µg/L1,1-Dichloroethene 70-130 3.1 20.0 19.8 99.010120.120.0µg/Lcis-1,2-Dichloroethene 70-130 1.5 20.0 18.6 93.099.019.820.0µg/Ltrans-1,2-Dichloroethene 70-130 6.2 20.0 Page 4 of 13Date:05/30/2023 02:55 PM Page 30 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33606QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33605 LCS-V33605 LCSD-V33605Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 18.6 93.094.518.920.0µg/L1,2-Dichloropropane 70-130 1.6 20.0 18.3 91.595.519.120.0µg/L1,3-Dichloropropane 70-130 4.2 20.0 18.7 93.598.519.720.0µg/L2,2-Dichloropropane 70-130 5.2 20.0 19.8 99.010420.720.0µg/L1,1-Dichloropropene 70-130 4.4 20.0 18.6 93.097.519.520.0µg/Lcis-1,3-Dichloropropene 70-130 4.7 20.0 18.5 92.598.019.620.0µg/Ltrans-1,3-Dichloropropene 70-130 5.7 20.0 441 88.2101507500µg/LEthanol 60-140 13.9 20.0 18.9 94.598.019.620.0µg/LEthylbenzene 70-130 3.6 20.0 20.2 10111021.920.0µg/LHexachlorobutadiene 70-130 8.0 20.0 16.5 82.587.017.420.0µg/L2-Hexanone 60-140 5.3 20.0 18.8 94.098.019.620.0µg/LIsopropylbenzene 70-130 4.1 20.0 18.6 93.098.519.720.0µg/L4-Isopropyl toluene 70-130 5.7 20.0 17.7 88.586.017.220.0µg/LMethyl Ethyl Ketone (MEK)60-140 2.8 20.0 18.7 93.593.018.620.0µg/LMethyl tert-butyl ether (MTBE)70-130 0.5 20.0 17.7 88.590.018.020.0µg/L4-Methyl-2-Pentanone 60-140 1.6 20.0 18.9 94.597.019.420.0µg/LMethylene Chloride 70-130 2.6 20.0 19.9 99.510821.520.0µg/LNaphthalene 70-130 7.7 20.0 18.2 91.096.019.220.0µg/Ln-Propylbenzene 70-130 5.3 20.0 18.9 94.593.018.620.0µg/LStyrene 70-130 1.6 20.0 19.2 96.098.019.620.0µg/L1,1,1,2-Tetrachloroethane 70-130 2.0 20.0 18.3 91.593.018.620.0µg/L1,1,2,2-Tetrachloroethane 70-130 1.6 20.0 18.1 90.596.019.220.0µg/LTetrachloroethene 70-130 5.8 20.0 18.2 91.094.518.920.0µg/LToluene 70-130 3.7 20.0 22.0 11012124.120.0µg/L1,2,3-Trichlorobenzene 70-130 9.1 20.0 19.3 96.510020.020.0µg/L1,2,4-Trichlorobenzene 70-130 3.5 20.0 18.3 91.595.019.020.0µg/L1,1,1-Trichloroethane 70-130 3.7 20.0 Page 5 of 13Date:05/30/2023 02:55 PM Page 31 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33606QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33605 LCS-V33605 LCSD-V33605Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 18.9 94.596.019.220.0µg/L1,1,2-Trichloroethane 70-130 1.5 20.0 19.2 96.010020.020.0µg/LTrichloroethene 70-130 4.0 20.0 18.3 91.596.519.320.0µg/LTrichlorofluoromethane 60-140 5.3 20.0 18.2 91.092.018.420.0µg/L1,2,3-Trichloropropane 70-130 1.0 20.0 18.6 93.097.019.420.0µg/L1,2,4-Trimethylbenzene 70-130 4.2 20.0 18.7 93.598.019.620.0µg/L1,3,5-Trimethylbenzene 70-130 4.6 20.0 21.6 10811021.920.0µg/LVinyl Acetate 60-140 1.3 20.0 18.7 93.599.519.920.0µg/LVinyl Chloride 60-140 6.2 20.0 18.6 93.094.518.920.0µg/Lo-Xylene 70-130 1.6 20.0 37.6 94.097.539.040.0µg/Lm,p-Xylene 70-130 3.6 20.0 1001014-Bromofluorobenzene (S)70-130 99.298.2Dibromofluoromethane (S)70-130 1011011,2-Dichloroethane - d4 (S)70-130 10199.6Toluene-d8 (S)70-130 Page 6 of 13Date:05/30/2023 02:55 PM Page 32 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33670QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33669 Associated Lab Samples: 96580, 96582 LRB-V33669 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/24/23 14:550.5000.170<0.170µg/LEthylbenzene 05/24/23 14:550.5000.220<0.220µg/LToluene 05/24/23 14:550.5000.190<0.190µg/L1,2,4-Trimethylbenzene 05/24/23 14:550.5000.210<0.210µg/Lo-Xylene 05/24/23 14:551.000.420<0.420µg/Lm,p-Xylene 05/24/23 14:554-Bromofluorobenzene (S)103 70-130 05/24/23 14:55Dibromofluoromethane (S)99.4 70-130 05/24/23 14:551,2-Dichloroethane - d4 (S)106 70-130 05/24/23 14:55Toluene-d8 (S)101 70-130 LCS-V33669 LCSD-V33669Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 18.0 90.093.518.720.0µg/LEthylbenzene 70-130 3.8 20.0 17.6 88.090.018.020.0µg/LToluene 70-130 2.2 20.0 17.4 87.090.518.120.0µg/L1,2,4-Trimethylbenzene 70-130 3.9 20.0 17.4 87.090.018.020.0µg/Lo-Xylene 70-130 3.3 20.0 35.4 88.592.236.940.0µg/Lm,p-Xylene 70-130 4.1 20.0 99.299.04-Bromofluorobenzene (S)70-130 101101Dibromofluoromethane (S)70-130 1071081,2-Dichloroethane - d4 (S)70-130 99.8101Toluene-d8 (S)70-130 Page 7 of 13Date:05/30/2023 02:55 PM Page 33 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33730QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33727 Associated Lab Samples: 96583 LRB-V33727 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/25/23 22:1310.01.80<1.80µg/LAcetone 05/25/23 22:130.5000.180<0.180µg/LBenzene 05/25/23 22:130.5000.210<0.210µg/LBromobenzene 05/25/23 22:131.000.420<0.420µg/LBromochloromethane 05/25/23 22:130.5000.160<0.160µg/LBromodichloromethane 05/25/23 22:135.001.50<1.50µg/LBromoform 05/25/23 22:131.000.280<0.280µg/LBromomethane 05/25/23 22:130.5000.180<0.180µg/Ln-Butylbenzene 05/25/23 22:130.5000.200<0.200µg/Lsec-Butyl benzene 05/25/23 22:132.000.920<0.920µg/Ltert-Butyl benzene 05/25/23 22:130.5000.180<0.180µg/LCarbon Tetrachloride 05/25/23 22:130.5000.190<0.190µg/LChlorobenzene 05/25/23 22:130.5000.190<0.190µg/LChlorodibromomethane 05/25/23 22:131.000.430<0.430µg/LChloroethane 05/25/23 22:130.5000.220<0.220µg/LChloroform 05/25/23 22:130.5000.220<0.220µg/LChloromethane 05/25/23 22:130.5000.200<0.200µg/L2-Chlorotoluene 05/25/23 22:130.5000.200<0.200µg/L4-Chlorotoluene 05/25/23 22:130.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE) 05/25/23 22:132.001.10<1.10µg/L1,2-Dibromo-3-Chloropropane 05/25/23 22:130.5000.200<0.200µg/L1,2-Dibromoethane 05/25/23 22:130.5000.230<0.230µg/LDibromomethane 05/25/23 22:130.5000.220<0.220µg/L1,2-Dichlorobenzene 05/25/23 22:130.5000.190<0.190µg/L1,3-Dichlorobenzene 05/25/23 22:130.5000.210<0.210µg/L1,4-Dichlorobenzene 05/25/23 22:135.001.20<1.20µg/LDichlorodifluoromethane 05/25/23 22:130.5000.240<0.240µg/L1,1-Dichloroethane Page 8 of 13Date:05/30/2023 02:55 PM Page 34 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33730QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33727 Associated Lab Samples: 96583 LRB-V33727 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/25/23 22:130.5000.150<0.150µg/L1,2-Dichloroethane 05/25/23 22:130.5000.150<0.150µg/L1,1-Dichloroethene 05/25/23 22:130.5000.200<0.200µg/Lcis-1,2-Dichloroethene 05/25/23 22:130.5000.180<0.180µg/Ltrans-1,2-Dichloroethene 05/25/23 22:130.5000.190<0.190µg/L1,2-Dichloropropane 05/25/23 22:130.5000.130<0.130µg/L1,3-Dichloropropane 05/25/23 22:132.000.210<0.210µg/L2,2-Dichloropropane 05/25/23 22:130.5000.200<0.200µg/L1,1-Dichloropropene 05/25/23 22:130.5000.210<0.210µg/Lcis-1,3-Dichloropropene 05/25/23 22:130.5000.150<0.150µg/Ltrans-1,3-Dichloropropene 05/25/23 22:1320042.0<42.0µg/LEthanol 05/25/23 22:130.5000.170<0.170µg/LEthylbenzene 05/25/23 22:133.000.350<0.350µg/LHexachlorobutadiene 05/25/23 22:131.000.380<0.380µg/L2-Hexanone 05/25/23 22:130.5000.180<0.180µg/LIsopropylbenzene 05/25/23 22:130.5000.089<0.089µg/L4-Isopropyl toluene 05/25/23 22:135.000.710<0.710µg/LMethyl Ethyl Ketone (MEK) 05/25/23 22:131.000.140<0.140µg/LMethyl tert-butyl ether (MTBE) 05/25/23 22:131.000.078<0.078µg/L4-Methyl-2-Pentanone 05/25/23 22:132.000.330<0.330µg/LMethylene Chloride 05/25/23 22:131.000.470<0.470µg/LNaphthalene 05/25/23 22:130.5000.190<0.190µg/Ln-Propylbenzene 05/25/23 22:130.5000.220<0.220µg/LStyrene 05/25/23 22:130.5000.160<0.160µg/L1,1,1,2-Tetrachloroethane 05/25/23 22:130.5000.160<0.160µg/L1,1,2,2-Tetrachloroethane 05/25/23 22:130.5000.220<0.220µg/LTetrachloroethene 05/25/23 22:130.5000.220<0.220µg/LToluene Page 9 of 13Date:05/30/2023 02:55 PM Page 35 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33730QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33727 Associated Lab Samples: 96583 LRB-V33727 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLMDLBlank ResultUnits % Recovery % Rec Limits 05/25/23 22:130.5000.380<0.380µg/L1,2,3-Trichlorobenzene 05/25/23 22:130.5000.310<0.310µg/L1,2,4-Trichlorobenzene 05/25/23 22:130.5000.160<0.160µg/L1,1,1-Trichloroethane 05/25/23 22:130.5000.096<0.096µg/L1,1,2-Trichloroethane 05/25/23 22:130.5000.180<0.180µg/LTrichloroethene 05/25/23 22:130.5000.180<0.180µg/LTrichlorofluoromethane 05/25/23 22:130.5000.270<0.270µg/L1,2,3-Trichloropropane 05/25/23 22:130.5000.190<0.190µg/L1,2,4-Trimethylbenzene 05/25/23 22:130.5000.180<0.180µg/L1,3,5-Trimethylbenzene 05/25/23 22:135.001.00<1.00µg/LVinyl Acetate 05/25/23 22:130.5000.170<0.170µg/LVinyl Chloride 05/25/23 22:130.5000.210<0.210µg/Lo-Xylene 05/25/23 22:131.000.420<0.420µg/Lm,p-Xylene 05/25/23 22:134-Bromofluorobenzene (S)107 70-130 05/25/23 22:13Dibromofluoromethane (S)96.0 70-130 05/25/23 22:131,2-Dichloroethane - d4 (S)99.4 70-130 05/25/23 22:13Toluene-d8 (S)100 70-130 LCS-V33727 LCSD-V33727Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 28.2 70.585.034.040.0µg/LAcetone 40-160 18.6 20.0 18.8 94.011122.220.0µg/LBenzene 70-130 16.5 20.0 19.6 98.010220.420.0µg/LBromobenzene 70-130 4.0 20.0 19.8 99.010621.120.0µg/LBromochloromethane 70-130 6.3 20.0 18.0 90.072.514.520.0µg/LBromodichloromethane 70-130 21.5*20.0 Page 10 of 13* QC Fail Date:05/30/2023 02:55 PM Page 36 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33730QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33727 LCS-V33727 LCSD-V33727Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 19.2 96.095.519.120.0µg/LBromoform 70-130 0.5 20.0 20.9 10596.019.220.0µg/LBromomethane 60-140 8.4 20.0 18.9 94.593.018.620.0µg/Ln-Butylbenzene 70-130 1.6 20.0 17.3 86.587.517.520.0µg/Lsec-Butyl benzene 70-130 1.1 20.0 17.4 87.088.017.620.0µg/Ltert-Butyl benzene 70-130 1.1 20.0 20.1 10110220.320.0µg/LCarbon Tetrachloride 70-130 0.9 20.0 18.3 91.592.518.520.0µg/LChlorobenzene 70-130 1.0 20.0 19.2 96.010320.520.0µg/LChlorodibromomethane 70-130 6.5 20.0 23.6 11810220.420.0µg/LChloroethane 60-140 14.5 20.0 18.9 94.510821.620.0µg/LChloroform 70-130 13.3 20.0 20.2 10177.515.520.0µg/LChloromethane 60-140 26.3*20.0 18.6 93.096.519.320.0µg/L2-Chlorotoluene 70-130 3.6 20.0 20.0 10095.019.020.0µg/L4-Chlorotoluene 70-130 5.1 20.0 18.7 93.510821.620.0µg/LDi-Isopropyl Ether (DIPE)70-130 14.3 20.0 24.1 12112124.120.0µg/L1,2-Dibromo-3-Chloropropane 70-130 0.0 20.0 17.5 87.589.517.920.0µg/L1,2-Dibromoethane 70-130 2.2 20.0 18.7 93.568.5*13.720.0µg/LDibromomethane 70-130 30.8*20.0 20.7 10410521.020.0µg/L1,2-Dichlorobenzene 70-130 1.4 20.0 18.3 91.597.019.420.0µg/L1,3-Dichlorobenzene 70-130 5.8 20.0 19.5 97.599.519.920.0µg/L1,4-Dichlorobenzene 70-130 2.0 20.0 19.0 95.079.515.920.0µg/LDichlorodifluoromethane 60-140 17.7 20.0 18.5 92.510621.220.0µg/L1,1-Dichloroethane 70-130 13.6 20.0 18.2 91.095.019.020.0µg/L1,2-Dichloroethane 70-130 4.3 20.0 17.3 86.510420.820.0µg/L1,1-Dichloroethene 70-130 18.3 20.0 18.5 92.510921.720.0µg/Lcis-1,2-Dichloroethene 70-130 15.9 20.0 19.3 96.511122.120.0µg/Ltrans-1,2-Dichloroethene 70-130 13.5 20.0 Page 11 of 13* QC Fail Date:05/30/2023 02:55 PM Page 37 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33730QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33727 LCS-V33727 LCSD-V33727Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 17.8 89.073.014.620.0µg/L1,2-Dichloropropane 70-130 19.7 20.0 16.7 83.588.517.720.0µg/L1,3-Dichloropropane 70-130 5.8 20.0 18.2 91.010621.220.0µg/L2,2-Dichloropropane 70-130 15.2 20.0 19.6 98.011522.920.0µg/L1,1-Dichloropropene 70-130 15.5 20.0 17.3 86.570.014.020.0µg/Lcis-1,3-Dichloropropene 70-130 21.0*20.0 19.0 95.074.014.820.0µg/Ltrans-1,3-Dichloropropene 70-130 24.8*20.0 456 91.2103515500µg/LEthanol 60-140 12.1 20.0 18.5 92.598.019.620.0µg/LEthylbenzene 70-130 5.7 20.0 22.0 11010120.220.0µg/LHexachlorobutadiene 70-130 8.5 20.0 16.7 83.582.016.420.0µg/L2-Hexanone 60-140 1.8 20.0 18.4 92.093.518.720.0µg/LIsopropylbenzene 70-130 1.6 20.0 17.9 89.592.518.520.0µg/L4-Isopropyl toluene 70-130 3.2 20.0 16.7 83.591.018.220.0µg/LMethyl Ethyl Ketone (MEK)60-140 8.5 20.0 17.3 86.597.519.520.0µg/LMethyl tert-butyl ether (MTBE)70-130 11.9 20.0 17.8 89.074.514.920.0µg/L4-Methyl-2-Pentanone 60-140 17.7 20.0 18.4 92.010120.120.0µg/LMethylene Chloride 70-130 8.8 20.0 18.5 92.510220.420.0µg/LNaphthalene 70-130 9.7 20.0 17.8 89.093.018.620.0µg/Ln-Propylbenzene 70-130 4.3 20.0 18.9 94.591.018.220.0µg/LStyrene 70-130 3.7 20.0 16.7 83.593.518.720.0µg/L1,1,1,2-Tetrachloroethane 70-130 11.2 20.0 18.3 91.593.518.720.0µg/L1,1,2,2-Tetrachloroethane 70-130 2.1 20.0 18.6 93.099.519.920.0µg/LTetrachloroethene 70-130 6.7 20.0 17.1 85.572.514.520.0µg/LToluene 70-130 16.4 20.0 22.0 11011723.320.0µg/L1,2,3-Trichlorobenzene 70-130 5.7 20.0 20.2 10110420.720.0µg/L1,2,4-Trichlorobenzene 70-130 2.4 20.0 18.6 93.010120.120.0µg/L1,1,1-Trichloroethane 70-130 7.7 20.0 Page 12 of 13* QC Fail Date:05/30/2023 02:55 PM Page 38 of 41 Quality Control Data 23-139-0016Report No: Project Description: Client ID:Pyramid Environmental & Engineering, P.C. Taylor's Groc QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V33730QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V33727 LCS-V33727 LCSD-V33727Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 19.5 97.579.015.820.0µg/L1,1,2-Trichloroethane 70-130 20.9*20.0 17.6 88.091.018.220.0µg/LTrichloroethene 70-130 3.3 20.0 19.9 99.587.517.520.0µg/LTrichlorofluoromethane 60-140 12.8 20.0 19.2 96.094.518.920.0µg/L1,2,3-Trichloropropane 70-130 1.5 20.0 17.4 87.088.017.620.0µg/L1,2,4-Trimethylbenzene 70-130 1.1 20.0 17.8 89.089.517.920.0µg/L1,3,5-Trimethylbenzene 70-130 0.5 20.0 22.1 11199.519.920.0µg/LVinyl Acetate 60-140 10.4 20.0 19.7 98.575.515.120.0µg/LVinyl Chloride 60-140 26.4*20.0 18.2 91.091.018.220.0µg/Lo-Xylene 70-130 0.0 20.0 38.3 95.799.239.740.0µg/Lm,p-Xylene 70-130 3.5 20.0 1021034-Bromofluorobenzene (S)70-130 98.2101Dibromofluoromethane (S)70-130 98.21001,2-Dichloroethane - d4 (S)70-130 101108Toluene-d8 (S)70-130 Page 13 of 13* QC Fail Date:05/30/2023 02:55 PM Page 39 of 41 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:23-139-0016 Pyramid Environmental & Engineering, P.C. 01168 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:IRT15 2.2C Chain of Custody (COC) present?Yes No Yes No Not Present Yes No Not Present Yes No COC agrees with sample label(s)? Yes No COC properly completed Samples in proper containers? Sample containers intact? Sufficient sample volume for indicated test(s)? All samples received within holding time? Cooler temperature in compliance? Yes No Yes No Yes No Yes No Yes No Yes NoCooler/Samples arrived at the laboratory on ice. Samples were considered acceptable as cooling process had begun. Yes No Yes No N/A Yes No N/A Yes No N/ASoil VOA method 5035 – compliance criteria met Water - Sample containers properly preserved Water - VOA vials free of headspace Yes No N/A Trip Blanks received with VOAs Low concentration EnCore samplers (48 hr) High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d) High concentration container (48 hr) Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Number of coolers/boxes received Yes No 1 Signature:Angelo Norvell Date & Time:05/19/2023 13:00:40 Special precautions or instructions included? Comments: Page 40 of 41 Page 41 of 41