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HomeMy WebLinkAboutRA-3823_23187_CA_HRE_20210526_Buy Quick Bahama April 2021 Limited Supply Well Monitoring Event East Coast Environmental, P.A. 3815 Junction Boulevard Raleigh, NC 27603 (919) 772-0268 Eastcoastenv.com May 26, 2021 Mr. Craig Mcintosh NC-DEQ-UST Section Raleigh Regional Office 1628 Mail Service Center Raleigh, NC 27699-1628 Re: Buy Quick Food Mart - Bahama (Site) 1502 Bahama Road, Bahama, Durham County, North Carolina (WSW-16) NCDENR-Incident # 23187 Dear Mr. Mcintosh, Please find attached the analytical results for supply well samples collected from the above listed location on April 27, 2021. The results for the unfiltered sample collected before the first inline filter showed MTBE at 1,400-ug/l and IPE at 110-ug/l but no detections in the sample collected between the first and second in-line carbon filters during this most recent sampling event which indicates no breakthrough after the first in-line carbon filter. As stated in our previous monitoring report from August 2020 we now have had sixteen monitoring events dating back to August 2013 with no detections in samples collected from supply wells WSW-18 and WSW-25. We believe that based on these historical results the sampling schedule for these two wells should be dropped back to annual sampling. Your input into this request would be greatly appreciated. Should you have any questions, or require additional information, please feel free to contact me at your earliest opportunity. Finally, we are scheduled to collected samples from 1502 Bahama Road as well as the remaining two water supply wells during August 2021. Respectfully, East Coast Environmental, P.A. Thomas R. Will, L.G. # 1164 President 102-A Woodwinds Industrial Court Cary NC, 27511 919.467.3090 919.467.3515Phone:FAX:[TOC_1]ENCO Laboratories, Inc.[TOC] ENCO Workorder(s): CE06254 Raleigh, NC 27603 Unless otherwise noted in an attached project narrative, all samples were received in acceptable condition and processed in accordance with the referenced methods/procedures. Results for these procedures apply only to the samples as submitted. The analytical results contained in this report are in compliance with NELAC standards, except as noted in the project narrative if applicable. This report shall not be reproduced except in full, without the written approval of the Laboratory. This report contains only those analyses performed by Environmental Conservation Laboratories. Unless otherwise noted, all analyses were performed at ENCO Cary. Data from outside organizations will be reported under separate cover. If you have any questions or require further information, please do not hesitate to contact me. Sincerely, Enclosure(s) Project Number: 1502 BAHAMA, Project Name/Desc: Buy Quick Food Mart Attn: Tom Will East Coast Environmental (EA030) 3815 Junction Blvd. Bill Scott Project Manager Thursday, May 13, 2021 RE: Laboratory Results for Dear Tom Will, Enclosed is a copy of your laboratory report for test samples received by our laboratory on Thursday, April 29, 2021. Enclosure(s) This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 1 of 27Page 1 of 27 www.encolabs.com SAMPLE SUMMARY/LABORATORY CHRONICLE [TOC_1]Sample Chronical[TOC] BEFORE FILTER CE06254-01 Sampled:04/27/21 10:35 Received:04/29/21 08:00Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)Preparation SM 6200B-2011 05/11/21 05/07/21 12:27 05/07/21 17:46EPA 5030B_MS BEFORE FILTER CE06254-01RE2 Sampled:04/27/21 10:35 Received:04/29/21 08:00Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)Preparation SM 6200B-2011 05/11/21 05/10/21 15:13 05/10/21 18:21EPA 5030B_MS AFTER FILTER CE06254-02 Sampled:04/27/21 11:00 Received:04/29/21 08:00Client ID:Lab ID: Prep Date/Time(s)Hold Date/Time(s)Parameter Analysis Date/Time(s)Preparation SM 6200B-2011 05/11/21 05/07/21 12:27 05/07/21 18:14EPA 5030B_MS This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 2 of 27Page 2 of 27 www.encolabs.com SAMPLE DETECTION SUMMARY [TOC_1]Detection Summary[TOC] Lab ID:Client ID:BEFORE FILTER CE06254-01 Analyte MethodUnitsPQLResultsFlag NotesMDL 110 1.0 ug/L SM 6200B-2011 Isopropyl Ether 0.21 Lab ID:Client ID:BEFORE FILTER CE06254-01RE2 Analyte MethodUnitsPQLResultsFlag NotesMDL 1400 10 ug/L SM 6200B-2011D Methyl-tert-Butyl Ether 1.2 This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 3 of 27Page 3 of 27 www.encolabs.com ANALYTICAL RESULTS [TOC_1]Analytical Results[TOC] BEFORE FILTERDescription:Lab Sample ID:CE06254-01 04/29/21 08:00Received: CE06254Work Order:04/27/21 10:35Sampled:WaterMatrix: Tom WillSampled By:Project:Buy Quick Food Mart [TOC_2]BEFORE FILTER[TOC] Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] NotesFlagPQLBatchByAnalyzedMethodMDLResultsUnitsDFAnalyte [CAS Number] ug/L SM 6200B-2011 05/07/21 17:461,1,1,2-Tetrachloroethane [630-20-6]^0.091 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,1,1-Trichloroethane [71-55-6]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,1,2,2-Tetrachloroethane [79-34-5]^0.085 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,1,2-Trichloroethane [79-00-5]^0.068 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,1-Dichloroethane [75-34-3]^0.050 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,1-Dichloroethene [75-35-4]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,1-Dichloropropene [563-58-6]^0.063 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,2,3-Trichlorobenzene [87-61-6]^0.25 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,2,3-Trichloropropane [96-18-4]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,2,4-Trichlorobenzene [120-82-1]^0.097 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,2,4-Trimethylbenzene [95-63-6]^0.067 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,2-Dibromo-3-chloropropane [96-12-8]^0.48 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,2-Dibromoethane [106-93-4]^0.42 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,2-Dichlorobenzene [95-50-1]^0.052 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,2-Dichloroethane [107-06-2]^0.082 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,2-Dichloropropane [78-87-5]^0.098 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,3,5-Trimethylbenzene [108-67-8]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,3-Dichlorobenzene [541-73-1]^0.092 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,3-Dichloropropane [142-28-9]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:461,4-Dichlorobenzene [106-46-7]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:462,2-Dichloropropane [594-20-7]^0.12 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:462-Chlorotoluene [95-49-8]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:464-Chlorotoluene [106-43-4]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:464-Isopropyltoluene [99-87-6]^0.066 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Benzene [71-43-2]^0.050 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Bromobenzene [108-86-1]^0.13 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Bromochloromethane [74-97-5]^0.11 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Bromodichloromethane [75-27-4]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Bromoform [75-25-2]^0.20 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Bromomethane [74-83-9]^0.28 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Carbon Tetrachloride [56-23-5]^0.082 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Chlorobenzene [108-90-7]^0.069 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Chloroethane [75-00-3]^0.18 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Chloroform [67-66-3]^0.083 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Chloromethane [74-87-3]^0.050 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46cis-1,2-Dichloroethene [156-59-2]^0.075 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46cis-1,3-Dichloropropene [10061-01-5]^0.073 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Dibromochloromethane [124-48-1]^0.067 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Dibromomethane [74-95-3]^0.13 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Dichlorodifluoromethane [75-71-8]^0.091 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Ethanol [64-17-5]^26 RKY1E07018100ND 1 ug/L SM 6200B-2011 05/07/21 17:46Ethylbenzene [100-41-4]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Freon 113 [76-13-1]^0.35 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Hexachlorobutadiene [87-68-3]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Isopropyl Ether [108-20-3]^0.21 RKY1E070181.0110 1 ug/L SM 6200B-2011 05/07/21 17:46Isopropylbenzene [98-82-8]^0.13 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46m,p-Xylenes [108-38-3/106-42-3]^0.18 RKY1E070182.0ND 1 This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 4 of 27Page 4 of 27 www.encolabs.com ANALYTICAL RESULTS BEFORE FILTERDescription:Lab Sample ID:CE06254-01 04/29/21 08:00Received: CE06254Work Order:04/27/21 10:35Sampled:WaterMatrix: Tom WillSampled By:Project:Buy Quick Food Mart Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] NotesFlagPQLBatchByAnalyzedMethodMDLResultsUnitsDFAnalyte [CAS Number] ug/L SM 6200B-2011 05/07/21 17:46Methylene Chloride [75-09-2]^0.070 RKY1E070182.0ND 1 ug/L SM 6200B-2011 05/10/21 18:21Methyl-tert-Butyl Ether [1634-04-4]^1.2 RKY1E10018101400D 10 ug/L SM 6200B-2011 05/07/21 17:46Naphthalene [91-20-3]^0.086 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46n-Butyl Benzene [104-51-8]^0.074 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46n-Propyl Benzene [103-65-1]^0.073 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46o-Xylene [95-47-6]^0.088 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46sec-Butylbenzene [135-98-8]^0.053 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Styrene [100-42-5]^0.082 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46tert-Butylbenzene [98-06-6]^0.094 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Tetrachloroethene [127-18-4]^0.099 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Toluene [108-88-3]^0.053 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46trans-1,2-Dichloroethene [156-60-5]^0.11 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46trans-1,3-Dichloropropene [10061-02-6]^0.080 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Trichloroethene [79-01-6]^0.13 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Trichlorofluoromethane [75-69-4]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Vinyl chloride [75-01-4]^0.083 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 17:46Xylenes (Total) [1330-20-7]^0.22 RKY1E070181.0ND 1 Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF 4-Bromofluorobenzene 70-13098 %RKYSM 6200B-2011 05/07/21 17:461E070184950.0 1 4-Bromofluorobenzene 70-130106 %RKYSM 6200B-2011 05/10/21 18:211E100185350.0 1 Dibromofluoromethane 70-13095 %RKYSM 6200B-2011 05/07/21 17:461E070184750.0 1 Dibromofluoromethane 70-130102 %RKYSM 6200B-2011 05/10/21 18:211E100185150.0 1 Toluene-d8 70-130100 %RKYSM 6200B-2011 05/07/21 17:461E070185050.0 1 Toluene-d8 70-130103 %RKYSM 6200B-2011 05/10/21 18:211E100185150.0 1 This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 5 of 27Page 5 of 27 www.encolabs.com ANALYTICAL RESULTS AFTER FILTERDescription:Lab Sample ID:CE06254-02 04/29/21 08:00Received: CE06254Work Order:04/27/21 11:00Sampled:WaterMatrix: Tom WillSampled By:Project:Buy Quick Food Mart [TOC_2]AFTER FILTER[TOC] Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] NotesFlagPQLBatchByAnalyzedMethodMDLResultsUnitsDFAnalyte [CAS Number] ug/L SM 6200B-2011 05/07/21 18:141,1,1,2-Tetrachloroethane [630-20-6]^0.091 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,1,1-Trichloroethane [71-55-6]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,1,2,2-Tetrachloroethane [79-34-5]^0.085 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,1,2-Trichloroethane [79-00-5]^0.068 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,1-Dichloroethane [75-34-3]^0.050 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,1-Dichloroethene [75-35-4]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,1-Dichloropropene [563-58-6]^0.063 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,2,3-Trichlorobenzene [87-61-6]^0.25 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,2,3-Trichloropropane [96-18-4]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,2,4-Trichlorobenzene [120-82-1]^0.097 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,2,4-Trimethylbenzene [95-63-6]^0.067 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,2-Dibromo-3-chloropropane [96-12-8]^0.48 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,2-Dibromoethane [106-93-4]^0.42 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,2-Dichlorobenzene [95-50-1]^0.052 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,2-Dichloroethane [107-06-2]^0.082 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,2-Dichloropropane [78-87-5]^0.098 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,3,5-Trimethylbenzene [108-67-8]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,3-Dichlorobenzene [541-73-1]^0.092 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,3-Dichloropropane [142-28-9]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:141,4-Dichlorobenzene [106-46-7]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:142,2-Dichloropropane [594-20-7]^0.12 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:142-Chlorotoluene [95-49-8]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:144-Chlorotoluene [106-43-4]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:144-Isopropyltoluene [99-87-6]^0.066 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Benzene [71-43-2]^0.050 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Bromobenzene [108-86-1]^0.13 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Bromochloromethane [74-97-5]^0.11 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Bromodichloromethane [75-27-4]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Bromoform [75-25-2]^0.20 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Bromomethane [74-83-9]^0.28 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Carbon Tetrachloride [56-23-5]^0.082 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Chlorobenzene [108-90-7]^0.069 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Chloroethane [75-00-3]^0.18 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Chloroform [67-66-3]^0.083 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Chloromethane [74-87-3]^0.050 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14cis-1,2-Dichloroethene [156-59-2]^0.075 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14cis-1,3-Dichloropropene [10061-01-5]^0.073 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Dibromochloromethane [124-48-1]^0.067 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Dibromomethane [74-95-3]^0.13 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Dichlorodifluoromethane [75-71-8]^0.091 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Ethanol [64-17-5]^26 RKY1E07018100ND 1 ug/L SM 6200B-2011 05/07/21 18:14Ethylbenzene [100-41-4]^0.10 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Freon 113 [76-13-1]^0.35 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Hexachlorobutadiene [87-68-3]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Isopropyl Ether [108-20-3]^0.21 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Isopropylbenzene [98-82-8]^0.13 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14m,p-Xylenes [108-38-3/106-42-3]^0.18 RKY1E070182.0ND 1 This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 6 of 27Page 6 of 27 www.encolabs.com ANALYTICAL RESULTS AFTER FILTERDescription:Lab Sample ID:CE06254-02 04/29/21 08:00Received: CE06254Work Order:04/27/21 11:00Sampled:WaterMatrix: Tom WillSampled By:Project:Buy Quick Food Mart Volatile Organic Compounds by GCMS ^ - ENCO Cary certified analyte [NC 591] NotesFlagPQLBatchByAnalyzedMethodMDLResultsUnitsDFAnalyte [CAS Number] ug/L SM 6200B-2011 05/07/21 18:14Methylene Chloride [75-09-2]^0.070 RKY1E070182.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Methyl-tert-Butyl Ether [1634-04-4]^0.12 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Naphthalene [91-20-3]^0.086 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14n-Butyl Benzene [104-51-8]^0.074 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14n-Propyl Benzene [103-65-1]^0.073 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14o-Xylene [95-47-6]^0.088 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14sec-Butylbenzene [135-98-8]^0.053 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Styrene [100-42-5]^0.082 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14tert-Butylbenzene [98-06-6]^0.094 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Tetrachloroethene [127-18-4]^0.099 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Toluene [108-88-3]^0.053 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14trans-1,2-Dichloroethene [156-60-5]^0.11 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14trans-1,3-Dichloropropene [10061-02-6]^0.080 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Trichloroethene [79-01-6]^0.13 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Trichlorofluoromethane [75-69-4]^0.15 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Vinyl chloride [75-01-4]^0.083 RKY1E070181.0ND 1 ug/L SM 6200B-2011 05/07/21 18:14Xylenes (Total) [1330-20-7]^0.22 RKY1E070181.0ND 1 Surrogates Results Spike Lvl % Rec Batch Method Analyzed By% Rec Limits NotesDF 4-Bromofluorobenzene 70-130105 %RKYSM 6200B-2011 05/07/21 18:141E070185250.0 1 Dibromofluoromethane 70-13095 %RKYSM 6200B-2011 05/07/21 18:141E070184850.0 1 Toluene-d8 70-130107 %RKYSM 6200B-2011 05/07/21 18:141E070185450.0 1 This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 7 of 27Page 7 of 27 www.encolabs.com QUALITY CONTROL DATA [TOC_1]QC Data[TOC] Volatile Organic Compounds by GCMS - Quality Control Batch 1E07018 - EPA 5030B_MS Prepared: 05/07/2021 12:27 Analyzed: 05/07/2021 15:54Blank (1E07018-BLK1) FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.00.091 U 1,1,1,2-Tetrachloroethane ug/L1.00.15 U 1,1,1-Trichloroethane ug/L1.00.085 U 1,1,2,2-Tetrachloroethane ug/L1.00.068 U 1,1,2-Trichloroethane ug/L1.00.050 U 1,1-Dichloroethane ug/L1.00.15 U 1,1-Dichloroethene ug/L1.00.063 U 1,1-Dichloropropene ug/L1.00.25 U 1,2,3-Trichlorobenzene ug/L1.00.15 U 1,2,3-Trichloropropane ug/L1.00.097 U 1,2,4-Trichlorobenzene ug/L1.00.067 U 1,2,4-Trimethylbenzene ug/L1.00.48 U 1,2-Dibromo-3-chloropropane ug/L1.00.42 U 1,2-Dibromoethane ug/L1.00.052 U 1,2-Dichlorobenzene ug/L1.00.082 U 1,2-Dichloroethane ug/L1.00.098 U 1,2-Dichloropropane ug/L1.00.10 U 1,3,5-Trimethylbenzene ug/L1.00.092 U 1,3-Dichlorobenzene ug/L1.00.15 U 1,3-Dichloropropane ug/L1.00.10 U 1,4-Dichlorobenzene ug/L1.00.12 U 2,2-Dichloropropane ug/L1.00.10 U 2-Chlorotoluene ug/L1.00.10 U 4-Chlorotoluene ug/L1.00.066 U 4-Isopropyltoluene ug/L1.00.050 U Benzene ug/L1.00.13 U Bromobenzene ug/L1.00.11 U Bromochloromethane ug/L1.00.10 U Bromodichloromethane ug/L1.00.20 U Bromoform ug/L1.00.28 U Bromomethane ug/L1.00.082 U Carbon Tetrachloride ug/L1.00.069 U Chlorobenzene ug/L1.00.18 U Chloroethane ug/L1.00.083 U Chloroform ug/L1.00.050 U Chloromethane ug/L1.00.075 U cis-1,2-Dichloroethene ug/L1.00.073 U cis-1,3-Dichloropropene ug/L1.00.067 U Dibromochloromethane ug/L1.00.13 U Dibromomethane ug/L1.00.091 U Dichlorodifluoromethane ug/L10026U Ethanol ug/L1.00.10 U Ethylbenzene ug/L1.00.35 U Freon 113 ug/L1.00.15 U Hexachlorobutadiene ug/L1.00.21 U Isopropyl Ether ug/L1.00.13 U Isopropylbenzene ug/L2.00.18 U m,p-Xylenes ug/L2.00.070 U Methylene Chloride ug/L1.00.12 U Methyl-tert-Butyl Ether This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 8 of 27Page 8 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E07018 - EPA 5030B_MS - Continued Prepared: 05/07/2021 12:27 Analyzed: 05/07/2021 15:54Blank (1E07018-BLK1) Continued FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.00.086 U Naphthalene ug/L1.00.074 U n-Butyl Benzene ug/L1.00.073 U n-Propyl Benzene ug/L1.00.088 U o-Xylene ug/L1.00.053 U sec-Butylbenzene ug/L1.00.082 U Styrene ug/L1.00.094 U tert-Butylbenzene ug/L1.00.099 U Tetrachloroethene ug/L1.00.053 U Toluene ug/L1.00.11 U trans-1,2-Dichloroethene ug/L1.00.080 U trans-1,3-Dichloropropene ug/L1.00.13 U Trichloroethene ug/L1.00.15 U Trichlorofluoromethane ug/L1.00.083 U Vinyl chloride ug/L1.00.22 U Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10351 ug/L 50.0 70-130Dibromofluoromethane9347 ug/L 50.0 70-130Toluene-d8 10351 Prepared: 05/07/2021 12:27 Analyzed: 05/07/2021 14:01LCS (1E07018-BS1) FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1309820 1,1,1,2-Tetrachloroethane ug/L1.0 20.0 70-13010721 1,1,1-Trichloroethane ug/L1.0 20.0 70-13010621 1,1,2,2-Tetrachloroethane ug/L1.0 20.0 70-13011222 1,1,2-Trichloroethane ug/L1.0 20.0 70-13011824 1,1-Dichloroethane ug/L1.0 20.0 70-13010521 1,1-Dichloroethene ug/L1.0 20.0 70-13011022 1,1-Dichloropropene ug/L1.0 20.0 70-1309820 1,2,3-Trichlorobenzene ug/L1.0 20.0 70-1309419 1,2,3-Trichloropropane ug/L1.0 20.0 70-1309519 1,2,4-Trichlorobenzene ug/L1.0 20.0 70-13010321 1,2,4-Trimethylbenzene ug/L1.0 20.0 70-1309018 1,2-Dibromo-3-chloropropane ug/L1.0 20.0 70-1309719 1,2-Dibromoethane ug/L1.0 20.0 70-13010421 1,2-Dichlorobenzene ug/L1.0 20.0 70-13010321 1,2-Dichloroethane ug/L1.0 20.0 70-13011423 1,2-Dichloropropane ug/L1.0 20.0 70-1309920 1,3,5-Trimethylbenzene ug/L1.0 20.0 70-13010421 1,3-Dichlorobenzene ug/L1.0 20.0 70-13010321 1,3-Dichloropropane ug/L1.0 20.0 70-13010922 1,4-Dichlorobenzene ug/L1.0 20.0 70-13012625 2,2-Dichloropropane ug/L1.0 20.0 70-13010421 2-Chlorotoluene ug/L1.0 20.0 70-13010321 4-Chlorotoluene ug/L1.0 20.0 70-13010321 4-Isopropyltoluene ug/L1.0 20.0 70-13011824 Benzene ug/L1.0 20.0 70-13010220 Bromobenzene ug/L1.0 20.0 70-13011523 Bromochloromethane This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 9 of 27Page 9 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E07018 - EPA 5030B_MS - Continued Prepared: 05/07/2021 12:27 Analyzed: 05/07/2021 14:01LCS (1E07018-BS1) Continued FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-13011022 Bromodichloromethane ug/L1.0 20.0 70-13011623 Bromoform ug/L1.0 20.0 60-14012024 Bromomethane ug/L1.0 20.0 70-13011222 Carbon Tetrachloride ug/L1.0 20.0 70-13011022 Chlorobenzene ug/L1.0 20.0 60-14012725 Chloroethane ug/L1.0 20.0 70-13010721 Chloroform ug/L1.0 20.0 60-14011122 Chloromethane ug/L1.0 20.0 70-1309920 cis-1,2-Dichloroethene ug/L1.0 20.0 70-13010721 cis-1,3-Dichloropropene ug/L1.0 20.0 70-13010721 Dibromochloromethane ug/L1.0 20.0 70-13010521 Dibromomethane ug/L1.0 20.0 60-14011022 Dichlorodifluoromethane ug/L100 100 0-200142140 Ethanol ug/L1.0 20.0 70-13010521 Ethylbenzene ug/L1.0 40.0 70-13010944 Freon 113 ug/L1.0 20.0 70-13010220 Hexachlorobutadiene ug/L1.0 20.0 70-13011022 Isopropyl Ether ug/L1.0 20.0 70-13011122 Isopropylbenzene ug/L2.0 40.0 70-13011044 m,p-Xylenes ug/L2.0 20.0 70-13011623 Methylene Chloride ug/L1.0 20.0 70-13010721 Methyl-tert-Butyl Ether ug/L1.0 20.0 70-1309419 Naphthalene ug/L1.0 20.0 70-13010922 n-Butyl Benzene ug/L1.0 20.0 70-13011523 n-Propyl Benzene ug/L1.0 20.0 70-13010521 o-Xylene ug/L1.0 20.0 70-13011022 sec-Butylbenzene ug/L1.0 20.0 70-13010321 Styrene ug/L1.0 20.0 70-13010421 tert-Butylbenzene ug/L1.0 20.0 70-13011423 Tetrachloroethene ug/L1.0 20.0 70-13010721 Toluene ug/L1.0 20.0 70-13011222 trans-1,2-Dichloroethene ug/L1.0 20.0 70-13011022 trans-1,3-Dichloropropene ug/L1.0 20.0 70-13011423 Trichloroethene ug/L1.0 20.0 60-14010321 Trichlorofluoromethane ug/L1.0 20.0 60-14012224 Vinyl chloride ug/L1.0 60.0 70-13010965 Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10151 ug/L 50.0 70-130Dibromofluoromethane9547 ug/L 50.0 70-130Toluene-d8 10452 Prepared: 05/07/2021 12:27 Analyzed: 05/07/2021 14:30Matrix Spike (1E07018-MS1) Source: CE06773-05 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1301090.091 U22 1,1,1,2-Tetrachloroethane ug/L1.0 20.0 70-1301060.15 U21 1,1,1-Trichloroethane ug/L1.0 20.0 70-1301090.085 U22 1,1,2,2-Tetrachloroethane ug/L1.0 20.0 70-1301190.068 U24 1,1,2-Trichloroethane ug/L1.0 20.0 70-1301220.050 U24 1,1-Dichloroethane This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 10 of 27Page 10 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E07018 - EPA 5030B_MS - Continued Prepared: 05/07/2021 12:27 Analyzed: 05/07/2021 14:30Matrix Spike (1E07018-MS1) Continued Source: CE06773-05 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1301100.15 U22 1,1-Dichloroethene ug/L1.0 20.0 70-1301180.063 U24 1,1-Dichloropropene ug/L1.0 20.0 70-1301040.25 U21 1,2,3-Trichlorobenzene ug/L1.0 20.0 70-130930.15 U19 1,2,3-Trichloropropane ug/L1.0 20.0 70-130990.097 U20 1,2,4-Trichlorobenzene ug/L1.0 20.0 70-1301100.067 U22 1,2,4-Trimethylbenzene ug/L1.0 20.0 70-130870.48 U17 1,2-Dibromo-3-chloropropane ug/L1.0 20.0 70-1301020.42 U20 1,2-Dibromoethane ug/L1.0 20.0 70-1301080.052 U22 1,2-Dichlorobenzene ug/L1.0 20.0 70-1301050.082 U21 1,2-Dichloroethane ug/L1.0 20.0 70-1301200.098 U24 1,2-Dichloropropane ug/L1.0 20.0 70-1301060.10 U21 1,3,5-Trimethylbenzene ug/L1.0 20.0 70-1301110.092 U22 1,3-Dichlorobenzene ug/L1.0 20.0 70-1301080.15 U22 1,3-Dichloropropane ug/L1.0 20.0 70-1301110.10 U22 1,4-Dichlorobenzene ug/L1.0 20.0 70-1301240.12 U25 2,2-Dichloropropane ug/L1.0 20.0 70-1301090.10 U22 2-Chlorotoluene ug/L1.0 20.0 70-1301060.10 U21 4-Chlorotoluene ug/L1.0 20.0 70-1301140.066 U23 4-Isopropyltoluene ug/L1.0 20.0 70-1301170.050 U23 Benzene ug/L1.0 20.0 70-1301140.13 U23 Bromobenzene ug/L1.0 20.0 70-1301170.11 U23 Bromochloromethane ug/L1.0 20.0 70-1301160.10 U23 Bromodichloromethane ug/L1.0 20.0 70-1301140.20 U23 Bromoform ug/L1.0 20.0 60-1401200.28 U24 Bromomethane ug/L1.0 20.0 70-1301140.082 U23 Carbon Tetrachloride ug/L1.0 20.0 70-1301130.069 U23 Chlorobenzene ug/L1.0 20.0 60-1401200.18 U24 Chloroethane ug/L1.0 20.0 70-1301160.083 U23 Chloroform ug/L1.0 20.0 60-1401140.050 U23 Chloromethane ug/L1.0 20.0 70-1301020.075 U20 cis-1,2-Dichloroethene ug/L1.0 20.0 70-1301100.073 U22 cis-1,3-Dichloropropene ug/L1.0 20.0 70-1301120.067 U22 Dibromochloromethane ug/L1.0 20.0 70-1301100.13 U22 Dibromomethane ug/L1.0 20.0 60-1401190.091 U24 Dichlorodifluoromethane ug/L100 100 0-20013826 U140 Ethanol ug/L1.0 20.0 70-1301120.10 U22 Ethylbenzene ug/L1.0 40.0 70-1301190.35 U47 Freon 113 ug/L1.0 20.0 70-1301070.15 U21 Hexachlorobutadiene ug/L1.0 20.0 70-1301190.21 U24 Isopropyl Ether ug/L1.0 20.0 70-1301180.13 U24 Isopropylbenzene ug/L2.0 40.0 70-1301190.18 U48 m,p-Xylenes ug/L2.0 20.0 70-1301180.070 U24 Methylene Chloride ug/L1.0 20.0 70-1301100.12 U22 Methyl-tert-Butyl Ether ug/L1.0 20.0 70-130970.086 U19 Naphthalene ug/L1.0 20.0 70-1301170.074 U23 n-Butyl Benzene ug/L1.0 20.0 70-1301240.073 U25 n-Propyl Benzene ug/L1.0 20.0 70-1301120.088 U22 o-Xylene ug/L1.0 20.0 70-1301210.053 U24 sec-Butylbenzene This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 11 of 27Page 11 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E07018 - EPA 5030B_MS - Continued Prepared: 05/07/2021 12:27 Analyzed: 05/07/2021 14:30Matrix Spike (1E07018-MS1) Continued Source: CE06773-05 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1301070.082 U21 Styrene ug/L1.0 20.0 70-1301100.094 U22 tert-Butylbenzene ug/L1.0 20.0 70-1301210.099 U24 Tetrachloroethene ug/L1.0 20.0 70-1301120.053 U22 Toluene ug/L1.0 20.0 70-1301170.11 U23 trans-1,2-Dichloroethene ug/L1.0 20.0 70-1301210.080 U24 trans-1,3-Dichloropropene ug/L1.0 20.0 70-1301170.13 U23 Trichloroethene ug/L1.0 20.0 60-1401100.15 U22 Trichlorofluoromethane ug/L1.0 20.0 60-1401270.083 U25 Vinyl chloride ug/L1.0 60.0 70-1301170.22 U70 Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10754 ug/L 50.0 70-130Dibromofluoromethane9447 ug/L 50.0 70-130Toluene-d8 10351 Prepared: 05/07/2021 12:27 Analyzed: 05/07/2021 14:58Matrix Spike Dup (1E07018-MSD1) Source: CE06773-05 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 1670-130101 80.091 U20 1,1,1,2-Tetrachloroethane ug/L1.0 20.0 1870-13098 80.15 U20 1,1,1-Trichloroethane ug/L1.0 20.0 1670-130109 0.60.085 U22 1,1,2,2-Tetrachloroethane ug/L1.0 20.0 1870-130116 20.068 U23 1,1,2-Trichloroethane ug/L1.0 20.0 1970-130111 90.050 U22 1,1-Dichloroethane ug/L1.0 20.0 2070-130105 50.15 U21 1,1-Dichloroethene ug/L1.0 20.0 1770-130106 110.063 U21 1,1-Dichloropropene ug/L1.0 20.0 1770-130100 40.25 U20 1,2,3-Trichlorobenzene ug/L1.0 20.0 1770-13098 60.15 U20 1,2,3-Trichloropropane ug/L1.0 20.0 1770-13096 30.097 U19 1,2,4-Trichlorobenzene ug/L1.0 20.0 1870-130101 80.067 U20 1,2,4-Trimethylbenzene ug/L1.0 20.0 1870-13088 0.70.48 U18 1,2-Dibromo-3-chloropropane ug/L1.0 20.0 1570-13098 40.42 U20 1,2-Dibromoethane ug/L1.0 20.0 1670-130102 60.052 U20 1,2-Dichlorobenzene ug/L1.0 20.0 1670-130100 50.082 U20 1,2-Dichloroethane ug/L1.0 20.0 1970-130119 0.20.098 U24 1,2-Dichloropropane ug/L1.0 20.0 1670-13097 80.10 U19 1,3,5-Trimethylbenzene ug/L1.0 20.0 1770-130104 70.092 U21 1,3-Dichlorobenzene ug/L1.0 20.0 1670-130104 40.15 U21 1,3-Dichloropropane ug/L1.0 20.0 1670-130106 50.10 U21 1,4-Dichlorobenzene ug/L1.0 20.0 2070-130118 60.12 U24 2,2-Dichloropropane ug/L1.0 20.0 1670-130101 80.10 U20 2-Chlorotoluene ug/L1.0 20.0 1670-130103 30.10 U21 4-Chlorotoluene ug/L1.0 20.0 1770-130102 100.066 U20 4-Isopropyltoluene ug/L1.0 20.0 1770-130114 30.050 U23 Benzene ug/L1.0 20.0 1770-130100 130.13 U20 Bromobenzene ug/L1.0 20.0 1870-130108 70.11 U22 Bromochloromethane ug/L1.0 20.0 1670-130106 90.10 U21 Bromodichloromethane ug/L1.0 20.0 4470-130117 20.20 U23 Bromoform ug/L1.0 20.0 2760-140115 40.28 U23 Bromomethane ug/L1.0 20.0 1770-130111 30.082 U22 Carbon Tetrachloride ug/L1.0 20.0 1670-130110 30.069 U22 Chlorobenzene This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 12 of 27Page 12 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E07018 - EPA 5030B_MS - Continued Prepared: 05/07/2021 12:27 Analyzed: 05/07/2021 14:58Matrix Spike Dup (1E07018-MSD1) Continued Source: CE06773-05 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 2660-140112 70.18 U22 Chloroethane ug/L1.0 20.0 1770-130105 90.083 U21 Chloroform ug/L1.0 20.0 2860-140106 70.050 U21 Chloromethane ug/L1.0 20.0 1870-13097 50.075 U19 cis-1,2-Dichloroethene ug/L1.0 20.0 1770-130104 60.073 U21 cis-1,3-Dichloropropene ug/L1.0 20.0 1670-130109 30.067 U22 Dibromochloromethane ug/L1.0 20.0 1570-130102 80.13 U20 Dibromomethane ug/L1.0 20.0 4860-140109 90.091 U22 Dichlorodifluoromethane ug/L100 100 250-200151 826 U150 Ethanol ug/L1.0 20.0 1670-130104 70.10 U21 Ethylbenzene ug/L1.0 40.0 2570-130107 100.35 U43 Freon 113 ug/L1.0 20.0 1970-13097 100.15 U19 Hexachlorobutadiene ug/L1.0 20.0 3070-130109 90.21 U22 Isopropyl Ether ug/L1.0 20.0 1670-130110 70.13 U22 Isopropylbenzene ug/L2.0 40.0 1670-130112 60.18 U45 m,p-Xylenes ug/L2.0 20.0 1770-130114 40.070 U23 Methylene Chloride ug/L1.0 20.0 2170-130107 20.12 U21 Methyl-tert-Butyl Ether ug/L1.0 20.0 1970-13096 0.80.086 U19 Naphthalene ug/L1.0 20.0 1570-130110 60.074 U22 n-Butyl Benzene ug/L1.0 20.0 1670-130114 80.073 U23 n-Propyl Benzene ug/L1.0 20.0 1570-130106 50.088 U21 o-Xylene ug/L1.0 20.0 1770-130111 90.053 U22 sec-Butylbenzene ug/L1.0 20.0 2370-130102 50.082 U20 Styrene ug/L1.0 20.0 2270-130102 70.094 U20 tert-Butylbenzene ug/L1.0 20.0 2670-130115 50.099 U23 Tetrachloroethene ug/L1.0 20.0 1770-130109 30.053 U22 Toluene ug/L1.0 20.0 1970-130113 30.11 U23 trans-1,2-Dichloroethene ug/L1.0 20.0 1670-130114 60.080 U23 trans-1,3-Dichloropropene ug/L1.0 20.0 1870-130110 60.13 U22 Trichloroethene ug/L1.0 20.0 2260-140101 90.15 U20 Trichlorofluoromethane ug/L1.0 20.0 2760-140116 90.083 U23 Vinyl chloride ug/L1.0 60.0 1670-130110 60.22 U66 Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10653 ug/L 50.0 70-130Dibromofluoromethane9447 ug/L 50.0 70-130Toluene-d8 10352 Batch 1E08001 - EPA 5030B_MS Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 18:28Blank (1E08001-BLK1) FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.00.091 U 1,1,1,2-Tetrachloroethane ug/L1.00.15 U 1,1,1-Trichloroethane ug/L1.00.085 U 1,1,2,2-Tetrachloroethane ug/L1.00.068 U 1,1,2-Trichloroethane ug/L1.00.050 U 1,1-Dichloroethane ug/L1.00.15 U 1,1-Dichloroethene ug/L1.00.063 U 1,1-Dichloropropene ug/L1.00.25 U 1,2,3-Trichlorobenzene This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 13 of 27Page 13 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E08001 - EPA 5030B_MS - Continued Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 18:28Blank (1E08001-BLK1) Continued FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.00.15 U 1,2,3-Trichloropropane ug/L1.00.097 U 1,2,4-Trichlorobenzene ug/L1.00.067 U 1,2,4-Trimethylbenzene ug/L1.00.48 U 1,2-Dibromo-3-chloropropane ug/L1.00.42 U 1,2-Dibromoethane ug/L1.00.052 U 1,2-Dichlorobenzene ug/L1.00.082 U 1,2-Dichloroethane ug/L1.00.098 U 1,2-Dichloropropane ug/L1.00.10 U 1,3,5-Trimethylbenzene ug/L1.00.092 U 1,3-Dichlorobenzene ug/L1.00.15 U 1,3-Dichloropropane ug/L1.00.10 U 1,4-Dichlorobenzene ug/L1.00.12 U 2,2-Dichloropropane ug/L1.00.10 U 2-Chlorotoluene ug/L1.00.10 U 4-Chlorotoluene ug/L1.00.066 U 4-Isopropyltoluene ug/L1.00.050 U Benzene ug/L1.00.13 U Bromobenzene ug/L1.00.11 U Bromochloromethane ug/L1.00.10 U Bromodichloromethane ug/L1.00.20 U Bromoform ug/L1.00.28 U Bromomethane ug/L1.00.082 U Carbon Tetrachloride ug/L1.00.069 U Chlorobenzene ug/L1.00.18 U Chloroethane ug/L1.00.083 U Chloroform ug/L1.00.050 U Chloromethane ug/L1.00.075 U cis-1,2-Dichloroethene ug/L1.00.073 U cis-1,3-Dichloropropene ug/L1.00.067 U Dibromochloromethane ug/L1.00.13 U Dibromomethane ug/L1.00.091 U Dichlorodifluoromethane ug/L10026U Ethanol ug/L1.00.10 U Ethylbenzene ug/L1.00.35 U Freon 113 ug/L1.00.15 U Hexachlorobutadiene ug/L1.00.21 U Isopropyl Ether ug/L1.00.13 U Isopropylbenzene ug/L2.00.18 U m,p-Xylenes ug/L2.00.070 U Methylene Chloride ug/L1.00.12 U Methyl-tert-Butyl Ether ug/L1.00.086 U Naphthalene ug/L1.00.074 U n-Butyl Benzene ug/L1.00.073 U n-Propyl Benzene ug/L1.00.088 U o-Xylene ug/L1.00.053 U sec-Butylbenzene ug/L1.00.082 U Styrene ug/L1.00.094 U tert-Butylbenzene ug/L1.00.099 U Tetrachloroethene This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 14 of 27Page 14 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E08001 - EPA 5030B_MS - Continued Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 18:28Blank (1E08001-BLK1) Continued FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.00.053 U Toluene ug/L1.00.11 U trans-1,2-Dichloroethene ug/L1.00.080 U trans-1,3-Dichloropropene ug/L1.00.13 U Trichloroethene ug/L1.00.15 U Trichlorofluoromethane ug/L1.00.083 U Vinyl chloride ug/L1.00.22 U Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 11256 ug/L 50.0 70-130Dibromofluoromethane9648 ug/L 50.0 70-130Toluene-d8 10653 Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 16:36LCS (1E08001-BS1) FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-13010321 1,1,1,2-Tetrachloroethane ug/L1.0 20.0 70-13011222 1,1,1-Trichloroethane ug/L1.0 20.0 70-13011122 1,1,2,2-Tetrachloroethane ug/L1.0 20.0 70-13011924 1,1,2-Trichloroethane ug/L1.0 20.0 70-13012124 1,1-Dichloroethane ug/L1.0 20.0 70-13011423 1,1-Dichloroethene ug/L1.0 20.0 70-13012024 1,1-Dichloropropene ug/L1.0 20.0 70-1309820 1,2,3-Trichlorobenzene ug/L1.0 20.0 70-1309820 1,2,3-Trichloropropane ug/L1.0 20.0 70-1309719 1,2,4-Trichlorobenzene ug/L1.0 20.0 70-13011423 1,2,4-Trimethylbenzene ug/L1.0 20.0 70-13010521 1,2-Dibromo-3-chloropropane ug/L1.0 20.0 70-13010721 1,2-Dibromoethane ug/L1.0 20.0 70-13010421 1,2-Dichlorobenzene ug/L1.0 20.0 70-13011623 1,2-Dichloroethane ug/L1.0 20.0 70-13012325 1,2-Dichloropropane ug/L1.0 20.0 70-13010721 1,3,5-Trimethylbenzene ug/L1.0 20.0 70-13010922 1,3-Dichlorobenzene ug/L1.0 20.0 70-13011423 1,3-Dichloropropane ug/L1.0 20.0 70-13011122 1,4-Dichlorobenzene ug/L1.0 20.0 70-13013828 QL-022,2-Dichloropropane ug/L1.0 20.0 70-13011323 2-Chlorotoluene ug/L1.0 20.0 70-13011222 4-Chlorotoluene ug/L1.0 20.0 70-13011022 4-Isopropyltoluene ug/L1.0 20.0 70-13012024 Benzene ug/L1.0 20.0 70-13010321 Bromobenzene ug/L1.0 20.0 70-13010922 Bromochloromethane ug/L1.0 20.0 70-13011523 Bromodichloromethane ug/L1.0 20.0 70-13011623 Bromoform ug/L1.0 20.0 60-1409820 Bromomethane ug/L1.0 20.0 70-13011924 Carbon Tetrachloride ug/L1.0 20.0 70-13011022 Chlorobenzene ug/L1.0 20.0 60-14012926 Chloroethane ug/L1.0 20.0 70-13011323 Chloroform ug/L1.0 20.0 60-1409619 Chloromethane This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 15 of 27Page 15 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E08001 - EPA 5030B_MS - Continued Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 16:36LCS (1E08001-BS1) Continued FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1309820 cis-1,2-Dichloroethene ug/L1.0 20.0 70-13011423 cis-1,3-Dichloropropene ug/L1.0 20.0 70-13011523 Dibromochloromethane ug/L1.0 20.0 70-13011022 Dibromomethane ug/L1.0 20.0 60-14010521 Dichlorodifluoromethane ug/L100 100 0-200160160 Ethanol ug/L1.0 20.0 70-13011222 Ethylbenzene ug/L1.0 40.0 70-13011948 Freon 113 ug/L1.0 20.0 70-13010321 Hexachlorobutadiene ug/L1.0 20.0 70-13012525 Isopropyl Ether ug/L1.0 20.0 70-13011623 Isopropylbenzene ug/L2.0 40.0 70-13011847 m,p-Xylenes ug/L2.0 20.0 70-13011824 Methylene Chloride ug/L1.0 20.0 70-13012124 Methyl-tert-Butyl Ether ug/L1.0 20.0 70-13010321 Naphthalene ug/L1.0 20.0 70-13011824 n-Butyl Benzene ug/L1.0 20.0 70-13012124 n-Propyl Benzene ug/L1.0 20.0 70-13011423 o-Xylene ug/L1.0 20.0 70-13012124 sec-Butylbenzene ug/L1.0 20.0 70-13010521 Styrene ug/L1.0 20.0 70-13011222 tert-Butylbenzene ug/L1.0 20.0 70-13012024 Tetrachloroethene ug/L1.0 20.0 70-13011423 Toluene ug/L1.0 20.0 70-13011924 trans-1,2-Dichloroethene ug/L1.0 20.0 70-13012525 trans-1,3-Dichloropropene ug/L1.0 20.0 70-13011323 Trichloroethene ug/L1.0 20.0 60-14011323 Trichlorofluoromethane ug/L1.0 20.0 60-1408617 Vinyl chloride ug/L1.0 60.0 70-13011670 Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10754 ug/L 50.0 70-130Dibromofluoromethane9548 ug/L 50.0 70-130Toluene-d8 10352 Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 17:04Matrix Spike (1E08001-MS1) Source: CE06773-06 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1301030.091 U21 1,1,1,2-Tetrachloroethane ug/L1.0 20.0 70-1301100.15 U22 1,1,1-Trichloroethane ug/L1.0 20.0 70-1301110.085 U22 1,1,2,2-Tetrachloroethane ug/L1.0 20.0 70-1301130.068 U23 1,1,2-Trichloroethane ug/L1.0 20.0 70-1301240.050 U25 1,1-Dichloroethane ug/L1.0 20.0 70-1301150.15 U23 1,1-Dichloroethene ug/L1.0 20.0 70-1301190.063 U24 1,1-Dichloropropene ug/L1.0 20.0 70-1301080.25 U22 1,2,3-Trichlorobenzene ug/L1.0 20.0 70-130960.15 U19 1,2,3-Trichloropropane ug/L1.0 20.0 70-1301010.097 U20 1,2,4-Trichlorobenzene ug/L1.0 20.0 70-1301150.067 U23 1,2,4-Trimethylbenzene ug/L1.0 20.0 70-130980.48 U20 1,2-Dibromo-3-chloropropane ug/L1.0 20.0 70-1301040.42 U21 1,2-Dibromoethane This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 16 of 27Page 16 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E08001 - EPA 5030B_MS - Continued Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 17:04Matrix Spike (1E08001-MS1) Continued Source: CE06773-06 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1301080.052 U22 1,2-Dichlorobenzene ug/L1.0 20.0 70-1301140.082 U23 1,2-Dichloroethane ug/L1.0 20.0 70-1301200.098 U24 1,2-Dichloropropane ug/L1.0 20.0 70-1301120.10 U22 1,3,5-Trimethylbenzene ug/L1.0 20.0 70-1301110.092 U22 1,3-Dichlorobenzene ug/L1.0 20.0 70-1301120.15 U22 1,3-Dichloropropane ug/L1.0 20.0 70-1301130.10 U23 1,4-Dichlorobenzene ug/L1.0 20.0 70-1301340.12 U27 QM-072,2-Dichloropropane ug/L1.0 20.0 70-1301130.10 U23 2-Chlorotoluene ug/L1.0 20.0 70-1301170.10 U23 4-Chlorotoluene ug/L1.0 20.0 70-1301140.066 U23 4-Isopropyltoluene ug/L1.0 20.0 70-1301180.050 U24 Benzene ug/L1.0 20.0 70-1301010.13 U20 Bromobenzene ug/L1.0 20.0 70-1301100.11 U22 Bromochloromethane ug/L1.0 20.0 70-1301160.10 U23 Bromodichloromethane ug/L1.0 20.0 70-1301190.20 U24 Bromoform ug/L1.0 20.0 60-140980.28 U20 Bromomethane ug/L1.0 20.0 70-1301150.082 U23 Carbon Tetrachloride ug/L1.0 20.0 70-1301110.069 U22 Chlorobenzene ug/L1.0 20.0 60-1401240.18 U25 Chloroethane ug/L1.0 20.0 70-1301160.083 U23 Chloroform ug/L1.0 20.0 60-1401010.050 U20 Chloromethane ug/L1.0 20.0 70-1301020.075 U20 cis-1,2-Dichloroethene ug/L1.0 20.0 70-1301130.073 U23 cis-1,3-Dichloropropene ug/L1.0 20.0 70-1301090.067 U22 Dibromochloromethane ug/L1.0 20.0 70-1301110.13 U22 Dibromomethane ug/L1.0 20.0 60-1401040.091 U21 Dichlorodifluoromethane ug/L100 100 0-20014726 U150 Ethanol ug/L1.0 20.0 70-1301120.10 U22 Ethylbenzene ug/L1.0 40.0 70-1301180.35 U47 Freon 113 ug/L1.0 20.0 70-1301050.15 U21 Hexachlorobutadiene ug/L1.0 20.0 70-1301240.21 U25 Isopropyl Ether ug/L1.0 20.0 70-1301140.13 U23 Isopropylbenzene ug/L2.0 40.0 70-1301160.18 U46 m,p-Xylenes ug/L2.0 20.0 70-1301210.070 U24 Methylene Chloride ug/L1.0 20.0 70-1301210.12 U24 Methyl-tert-Butyl Ether ug/L1.0 20.0 70-1301060.086 U21 Naphthalene ug/L1.0 20.0 70-1301200.074 U24 n-Butyl Benzene ug/L1.0 20.0 70-1301210.073 U24 n-Propyl Benzene ug/L1.0 20.0 70-1301120.088 U22 o-Xylene ug/L1.0 20.0 70-1301230.053 U25 sec-Butylbenzene ug/L1.0 20.0 70-1301040.082 U21 Styrene ug/L1.0 20.0 70-1301140.094 U23 tert-Butylbenzene ug/L1.0 20.0 70-1301200.099 U24 Tetrachloroethene ug/L1.0 20.0 70-1301120.053 U22 Toluene ug/L1.0 20.0 70-1301250.11 U25 trans-1,2-Dichloroethene ug/L1.0 20.0 70-1301230.080 U25 trans-1,3-Dichloropropene ug/L1.0 20.0 70-1301120.13 U22 Trichloroethene ug/L1.0 20.0 60-1401120.15 U22 Trichlorofluoromethane This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 17 of 27Page 17 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E08001 - EPA 5030B_MS - Continued Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 17:04Matrix Spike (1E08001-MS1) Continued Source: CE06773-06 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 60-140860.083 U17 Vinyl chloride ug/L1.0 60.0 70-1301150.22 U69 Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10753 ug/L 50.0 70-130Dibromofluoromethane9949 ug/L 50.0 70-130Toluene-d8 10251 Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 17:32Matrix Spike Dup (1E08001-MSD1) Source: CE06773-06 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 1670-130104 10.091 U21 1,1,1,2-Tetrachloroethane ug/L1.0 20.0 1870-130103 60.15 U21 1,1,1-Trichloroethane ug/L1.0 20.0 1670-130113 20.085 U23 1,1,2,2-Tetrachloroethane ug/L1.0 20.0 1870-130123 80.068 U25 1,1,2-Trichloroethane ug/L1.0 20.0 1970-130114 80.050 U23 1,1-Dichloroethane ug/L1.0 20.0 2070-130108 70.15 U22 1,1-Dichloroethene ug/L1.0 20.0 1770-130110 80.063 U22 1,1-Dichloropropene ug/L1.0 20.0 1770-13098 100.25 U20 1,2,3-Trichlorobenzene ug/L1.0 20.0 1770-13099 30.15 U20 1,2,3-Trichloropropane ug/L1.0 20.0 1770-13095 60.097 U19 1,2,4-Trichlorobenzene ug/L1.0 20.0 1870-130109 60.067 U22 1,2,4-Trimethylbenzene ug/L1.0 20.0 1870-13098 0.40.48 U20 1,2-Dibromo-3-chloropropane ug/L1.0 20.0 1570-130109 50.42 U22 1,2-Dibromoethane ug/L1.0 20.0 1670-130103 40.052 U21 1,2-Dichlorobenzene ug/L1.0 20.0 1670-130107 60.082 U21 1,2-Dichloroethane ug/L1.0 20.0 1970-130114 50.098 U23 1,2-Dichloropropane ug/L1.0 20.0 1670-130102 90.10 U20 1,3,5-Trimethylbenzene ug/L1.0 20.0 1770-130104 70.092 U21 1,3-Dichlorobenzene ug/L1.0 20.0 1670-130114 20.15 U23 1,3-Dichloropropane ug/L1.0 20.0 1670-130106 70.10 U21 1,4-Dichlorobenzene ug/L1.0 20.0 2070-130125 70.12 U25 2,2-Dichloropropane ug/L1.0 20.0 1670-130107 50.10 U21 2-Chlorotoluene ug/L1.0 20.0 1670-130107 90.10 U21 4-Chlorotoluene ug/L1.0 20.0 1770-130104 90.066 U21 4-Isopropyltoluene ug/L1.0 20.0 1770-130110 70.050 U22 Benzene ug/L1.0 20.0 1770-130105 40.13 U21 Bromobenzene ug/L1.0 20.0 1870-130103 70.11 U21 Bromochloromethane ug/L1.0 20.0 1670-130109 60.10 U22 Bromodichloromethane ug/L1.0 20.0 4470-130116 20.20 U23 Bromoform ug/L1.0 20.0 2760-14092 60.28 U18 Bromomethane ug/L1.0 20.0 1770-130109 50.082 U22 Carbon Tetrachloride ug/L1.0 20.0 1670-130111 0.20.069 U22 Chlorobenzene ug/L1.0 20.0 2660-140118 50.18 U24 Chloroethane ug/L1.0 20.0 1770-130109 70.083 U22 Chloroform ug/L1.0 20.0 2860-14094 70.050 U19 Chloromethane ug/L1.0 20.0 1870-130101 10.075 U20 cis-1,2-Dichloroethene ug/L1.0 20.0 1770-130103 90.073 U21 cis-1,3-Dichloropropene ug/L1.0 20.0 1670-130120 100.067 U24 Dibromochloromethane ug/L1.0 20.0 1570-130102 90.13 U20 Dibromomethane ug/L1.0 20.0 4860-14099 50.091 U20 Dichlorodifluoromethane This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 18 of 27Page 18 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E08001 - EPA 5030B_MS - Continued Prepared: 05/07/2021 13:00 Analyzed: 05/08/2021 17:32Matrix Spike Dup (1E08001-MSD1) Continued Source: CE06773-06 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L100 100 250-200179 2026 U180 Ethanol ug/L1.0 20.0 1670-130113 0.80.10 U23 Ethylbenzene ug/L1.0 40.0 2570-130114 30.35 U46 Freon 113 ug/L1.0 20.0 1970-13096 90.15 U19 Hexachlorobutadiene ug/L1.0 20.0 3070-130120 40.21 U24 Isopropyl Ether ug/L1.0 20.0 1670-130116 20.13 U23 Isopropylbenzene ug/L2.0 40.0 1670-130118 20.18 U47 m,p-Xylenes ug/L2.0 20.0 1770-130115 50.070 U23 Methylene Chloride ug/L1.0 20.0 2170-130116 40.12 U23 Methyl-tert-Butyl Ether ug/L1.0 20.0 1970-130103 20.086 U21 Naphthalene ug/L1.0 20.0 1570-130110 80.074 U22 n-Butyl Benzene ug/L1.0 20.0 1670-130118 20.073 U24 n-Propyl Benzene ug/L1.0 20.0 1570-130113 20.088 U23 o-Xylene ug/L1.0 20.0 1770-130113 80.053 U23 sec-Butylbenzene ug/L1.0 20.0 2370-130106 20.082 U21 Styrene ug/L1.0 20.0 2270-130104 100.094 U21 tert-Butylbenzene ug/L1.0 20.0 2670-130120 0.50.099 U24 Tetrachloroethene ug/L1.0 20.0 1770-130116 40.053 U23 Toluene ug/L1.0 20.0 1970-130113 100.11 U23 trans-1,2-Dichloroethene ug/L1.0 20.0 1670-130130 50.080 U26 trans-1,3-Dichloropropene ug/L1.0 20.0 1870-130107 50.13 U21 Trichloroethene ug/L1.0 20.0 2260-140104 70.15 U21 Trichlorofluoromethane ug/L1.0 20.0 2760-14081 70.083 U16 Vinyl chloride ug/L1.0 60.0 1670-130116 20.22 U70 Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 11759 ug/L 50.0 70-130Dibromofluoromethane9849 ug/L 50.0 70-130Toluene-d8 10553 Batch 1E10018 - EPA 5030B_MS Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 16:28Blank (1E10018-BLK1) FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.00.091 U 1,1,1,2-Tetrachloroethane ug/L1.00.15 U 1,1,1-Trichloroethane ug/L1.00.085 U 1,1,2,2-Tetrachloroethane ug/L1.00.068 U 1,1,2-Trichloroethane ug/L1.00.050 U 1,1-Dichloroethane ug/L1.00.15 U 1,1-Dichloroethene ug/L1.00.063 U 1,1-Dichloropropene ug/L1.00.25 U 1,2,3-Trichlorobenzene ug/L1.00.15 U 1,2,3-Trichloropropane ug/L1.00.097 U 1,2,4-Trichlorobenzene ug/L1.00.067 U 1,2,4-Trimethylbenzene ug/L1.00.48 U 1,2-Dibromo-3-chloropropane ug/L1.00.42 U 1,2-Dibromoethane ug/L1.00.052 U 1,2-Dichlorobenzene ug/L1.00.082 U 1,2-Dichloroethane ug/L1.00.098 U 1,2-Dichloropropane This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 19 of 27Page 19 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E10018 - EPA 5030B_MS - Continued Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 16:28Blank (1E10018-BLK1) Continued FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.00.10 U 1,3,5-Trimethylbenzene ug/L1.00.092 U 1,3-Dichlorobenzene ug/L1.00.15 U 1,3-Dichloropropane ug/L1.00.10 U 1,4-Dichlorobenzene ug/L1.00.12 U 2,2-Dichloropropane ug/L1.00.10 U 2-Chlorotoluene ug/L1.00.10 U 4-Chlorotoluene ug/L1.00.066 U 4-Isopropyltoluene ug/L1.00.050 U Benzene ug/L1.00.13 U Bromobenzene ug/L1.00.11 U Bromochloromethane ug/L1.00.10 U Bromodichloromethane ug/L1.00.20 U Bromoform ug/L1.00.28 U Bromomethane ug/L1.00.082 U Carbon Tetrachloride ug/L1.00.069 U Chlorobenzene ug/L1.00.18 U Chloroethane ug/L1.00.083 U Chloroform ug/L1.00.050 U Chloromethane ug/L1.00.075 U cis-1,2-Dichloroethene ug/L1.00.073 U cis-1,3-Dichloropropene ug/L1.00.067 U Dibromochloromethane ug/L1.00.13 U Dibromomethane ug/L1.00.091 U Dichlorodifluoromethane ug/L1.00.10 U Ethylbenzene ug/L1.00.35 U Freon 113 ug/L1.00.15 U Hexachlorobutadiene ug/L1.00.21 U Isopropyl Ether ug/L1.00.13 U Isopropylbenzene ug/L2.00.18 U m,p-Xylenes ug/L2.00.070 U Methylene Chloride ug/L1.00.12 U Methyl-tert-Butyl Ether ug/L1.00.086 U Naphthalene ug/L1.00.074 U n-Butyl Benzene ug/L1.00.073 U n-Propyl Benzene ug/L1.00.088 U o-Xylene ug/L1.00.053 U sec-Butylbenzene ug/L1.00.082 U Styrene ug/L1.00.094 U tert-Butylbenzene ug/L1.00.099 U Tetrachloroethene ug/L1.00.053 U Toluene ug/L1.00.11 U trans-1,2-Dichloroethene ug/L1.00.080 U trans-1,3-Dichloropropene ug/L1.00.13 U Trichloroethene ug/L1.00.15 U Trichlorofluoromethane ug/L1.00.083 U Vinyl chloride ug/L1.00.22 U Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10754 ug/L 50.0 70-130Dibromofluoromethane9950 This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 20 of 27Page 20 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E10018 - EPA 5030B_MS - Continued Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 16:28Blank (1E10018-BLK1) Continued FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L 50.0 70-130Toluene-d8 10653 Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 14:36LCS (1E10018-BS1) FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1309419 1,1,1,2-Tetrachloroethane ug/L1.0 20.0 70-13010220 1,1,1-Trichloroethane ug/L1.0 20.0 70-13010521 1,1,2,2-Tetrachloroethane ug/L1.0 20.0 70-13010621 1,1,2-Trichloroethane ug/L1.0 20.0 70-13011824 1,1-Dichloroethane ug/L1.0 20.0 70-13010822 1,1-Dichloroethene ug/L1.0 20.0 70-13011723 1,1-Dichloropropene ug/L1.0 20.0 70-1309118 1,2,3-Trichlorobenzene ug/L1.0 20.0 70-1308818 1,2,3-Trichloropropane ug/L1.0 20.0 70-1308918 1,2,4-Trichlorobenzene ug/L1.0 20.0 70-13010321 1,2,4-Trimethylbenzene ug/L1.0 20.0 70-1308717 1,2-Dibromo-3-chloropropane ug/L1.0 20.0 70-1309619 1,2-Dibromoethane ug/L1.0 20.0 70-1309920 1,2-Dichlorobenzene ug/L1.0 20.0 70-13010621 1,2-Dichloroethane ug/L1.0 20.0 70-13011924 1,2-Dichloropropane ug/L1.0 20.0 70-13010020 1,3,5-Trimethylbenzene ug/L1.0 20.0 70-13010020 1,3-Dichlorobenzene ug/L1.0 20.0 70-13010020 1,3-Dichloropropane ug/L1.0 20.0 70-13010521 1,4-Dichlorobenzene ug/L1.0 20.0 70-13012325 2,2-Dichloropropane ug/L1.0 20.0 70-13010321 2-Chlorotoluene ug/L1.0 20.0 70-13010120 4-Chlorotoluene ug/L1.0 20.0 70-13010421 4-Isopropyltoluene ug/L1.0 20.0 70-13011423 Benzene ug/L1.0 20.0 70-1309519 Bromobenzene ug/L1.0 20.0 70-13010521 Bromochloromethane ug/L1.0 20.0 70-13010822 Bromodichloromethane ug/L1.0 20.0 70-13011523 Bromoform ug/L1.0 20.0 60-14010421 Bromomethane ug/L1.0 20.0 70-13010922 Carbon Tetrachloride ug/L1.0 20.0 70-13010321 Chlorobenzene ug/L1.0 20.0 60-14012725 Chloroethane ug/L1.0 20.0 70-13010621 Chloroform ug/L1.0 20.0 60-14011022 Chloromethane ug/L1.0 20.0 70-1309719 cis-1,2-Dichloroethene ug/L1.0 20.0 70-13010421 cis-1,3-Dichloropropene ug/L1.0 20.0 70-13010120 Dibromochloromethane ug/L1.0 20.0 70-13010721 Dibromomethane ug/L1.0 20.0 60-14010421 Dichlorodifluoromethane ug/L1.0 20.0 70-13010321 Ethylbenzene ug/L1.0 40.0 70-13011546 Freon 113 ug/L1.0 20.0 70-1309218 Hexachlorobutadiene ug/L1.0 20.0 70-13011723 Isopropyl Ether This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 21 of 27Page 21 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E10018 - EPA 5030B_MS - Continued Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 14:36LCS (1E10018-BS1) Continued FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-13010822 Isopropylbenzene ug/L2.0 40.0 70-13010944 m,p-Xylenes ug/L2.0 20.0 70-13011824 Methylene Chloride ug/L1.0 20.0 70-13010822 Methyl-tert-Butyl Ether ug/L1.0 20.0 70-1309218 Naphthalene ug/L1.0 20.0 70-13010822 n-Butyl Benzene ug/L1.0 20.0 70-13011122 n-Propyl Benzene ug/L1.0 20.0 70-13010120 o-Xylene ug/L1.0 20.0 70-13011022 sec-Butylbenzene ug/L1.0 20.0 70-1309719 Styrene ug/L1.0 20.0 70-13010220 tert-Butylbenzene ug/L1.0 20.0 70-13011022 Tetrachloroethene ug/L1.0 20.0 70-13010421 Toluene ug/L1.0 20.0 70-13011523 trans-1,2-Dichloroethene ug/L1.0 20.0 70-13011122 trans-1,3-Dichloropropene ug/L1.0 20.0 70-13011022 Trichloroethene ug/L1.0 20.0 60-14010721 Trichlorofluoromethane ug/L1.0 20.0 60-14010220 Vinyl chloride ug/L1.0 60.0 70-13010664 Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10251 ug/L 50.0 70-130Dibromofluoromethane9548 ug/L 50.0 70-130Toluene-d8 10552 Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:04Matrix Spike (1E10018-MS1) Source: CE06773-07 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1301090.091 U22 1,1,1,2-Tetrachloroethane ug/L1.0 20.0 70-1301160.15 U23 1,1,1-Trichloroethane ug/L1.0 20.0 70-1301250.085 U25 1,1,2,2-Tetrachloroethane ug/L1.0 20.0 70-1301220.068 U24 1,1,2-Trichloroethane ug/L1.0 20.0 70-1301340.050 U27 1,1-Dichloroethane ug/L1.0 20.0 70-1301220.15 U24 1,1-Dichloroethene ug/L1.0 20.0 70-1301350.063 U27 1,1-Dichloropropene ug/L1.0 20.0 70-1301070.25 U21 1,2,3-Trichlorobenzene ug/L1.0 20.0 70-1301100.15 U22 1,2,3-Trichloropropane ug/L1.0 20.0 70-1301040.097 U21 1,2,4-Trichlorobenzene ug/L1.0 20.0 70-1301150.067 U23 1,2,4-Trimethylbenzene ug/L1.0 20.0 70-1301030.48 U21 1,2-Dibromo-3-chloropropane ug/L1.0 20.0 70-1301120.42 U22 1,2-Dibromoethane ug/L1.0 20.0 70-1301130.052 U23 1,2-Dichlorobenzene ug/L1.0 20.0 70-1301180.082 U24 1,2-Dichloroethane ug/L1.0 20.0 70-1301280.098 U26 1,2-Dichloropropane ug/L1.0 20.0 70-1301110.10 U22 1,3,5-Trimethylbenzene ug/L1.0 20.0 70-1301120.092 U22 1,3-Dichlorobenzene ug/L1.0 20.0 70-1301150.15 U23 1,3-Dichloropropane ug/L1.0 20.0 70-1301140.10 U23 1,4-Dichlorobenzene ug/L1.0 20.0 70-1301400.12 U28 2,2-Dichloropropane ug/L1.0 20.0 70-1301130.10 U23 2-Chlorotoluene ug/L1.0 20.0 70-1301140.10 U23 4-Chlorotoluene This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 22 of 27Page 22 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E10018 - EPA 5030B_MS - Continued Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:04Matrix Spike (1E10018-MS1) Continued Source: CE06773-07 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 70-1301150.066 U23 4-Isopropyltoluene ug/L1.0 20.0 70-1301260.050 U25 Benzene ug/L1.0 20.0 70-1301070.13 U21 Bromobenzene ug/L1.0 20.0 70-1301210.11 U24 Bromochloromethane ug/L1.0 20.0 70-1301180.10 U24 Bromodichloromethane ug/L1.0 20.0 70-1301340.20 U27 Bromoform ug/L1.0 20.0 60-1401110.28 U22 Bromomethane ug/L1.0 20.0 70-1301200.082 U24 Carbon Tetrachloride ug/L1.0 20.0 70-1301160.069 U23 Chlorobenzene ug/L1.0 20.0 60-1401510.18 U30 Chloroethane ug/L1.0 20.0 70-1301270.083 U25 Chloroform ug/L1.0 20.0 60-1401190.050 U24 Chloromethane ug/L1.0 20.0 70-1301120.075 U22 cis-1,2-Dichloroethene ug/L1.0 20.0 70-1301170.073 U23 cis-1,3-Dichloropropene ug/L1.0 20.0 70-1301190.067 U24 Dibromochloromethane ug/L1.0 20.0 70-1301150.13 U23 Dibromomethane ug/L1.0 20.0 60-1401140.091 U23 Dichlorodifluoromethane ug/L1.0 20.0 70-1301150.10 U23 Ethylbenzene ug/L1.0 40.0 70-1301290.35 U51 Freon 113 ug/L1.0 20.0 70-1301140.15 U23 Hexachlorobutadiene ug/L1.0 20.0 70-1301350.21 U27 Isopropyl Ether ug/L1.0 20.0 70-1301190.13 U24 Isopropylbenzene ug/L2.0 40.0 70-1301190.18 U48 m,p-Xylenes ug/L2.0 20.0 70-1301290.070 U26 Methylene Chloride ug/L1.0 20.0 70-1301250.12 U25 Methyl-tert-Butyl Ether ug/L1.0 20.0 70-1301100.086 U22 Naphthalene ug/L1.0 20.0 70-1301230.074 U25 n-Butyl Benzene ug/L1.0 20.0 70-1301270.073 U25 n-Propyl Benzene ug/L1.0 20.0 70-1301140.088 U23 o-Xylene ug/L1.0 20.0 70-1301250.053 U25 sec-Butylbenzene ug/L1.0 20.0 70-1301100.082 U22 Styrene ug/L1.0 20.0 70-1301130.094 U23 tert-Butylbenzene ug/L1.0 20.0 70-1301300.099 U26 Tetrachloroethene ug/L1.0 20.0 70-1301160.053 U23 Toluene ug/L1.0 20.0 70-1301340.11 U27 trans-1,2-Dichloroethene ug/L1.0 20.0 70-1301260.080 U25 trans-1,3-Dichloropropene ug/L1.0 20.0 70-1301190.13 U24 Trichloroethene ug/L1.0 20.0 60-1401210.15 U24 Trichlorofluoromethane ug/L1.0 20.0 60-1401150.083 U23 Vinyl chloride ug/L1.0 60.0 70-1301180.22 U71 Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10552 ug/L 50.0 70-130Dibromofluoromethane10151 ug/L 50.0 70-130Toluene-d8 10552 Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:32Matrix Spike Dup (1E10018-MSD1) Source: CE06773-07 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 1670-13088 220.091 U18 1,1,1,2-Tetrachloroethane ug/L1.0 20.0 1870-13097 180.15 U19 1,1,1-Trichloroethane This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 23 of 27Page 23 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E10018 - EPA 5030B_MS - Continued Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:32Matrix Spike Dup (1E10018-MSD1) Continued Source: CE06773-07 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 1670-130102 200.085 U20 1,1,2,2-Tetrachloroethane ug/L1.0 20.0 1870-13097 230.068 U19 1,1,2-Trichloroethane ug/L1.0 20.0 1970-130109 200.050 U22 1,1-Dichloroethane ug/L1.0 20.0 2070-13099 200.15 U20 1,1-Dichloroethene ug/L1.0 20.0 1770-130102 280.063 U20 1,1-Dichloropropene ug/L1.0 20.0 1770-13091 170.25 U18 1,2,3-Trichlorobenzene ug/L1.0 20.0 1770-13088 230.15 U18 1,2,3-Trichloropropane ug/L1.0 20.0 1770-13087 180.097 U17 1,2,4-Trichlorobenzene ug/L1.0 20.0 1870-13097 170.067 U19 1,2,4-Trimethylbenzene ug/L1.0 20.0 1870-13088 150.48 U18 1,2-Dibromo-3-chloropropane ug/L1.0 20.0 1570-13094 180.42 U19 1,2-Dibromoethane ug/L1.0 20.0 1670-13094 190.052 U19 1,2-Dichlorobenzene ug/L1.0 20.0 1670-13092 260.082 U18 1,2-Dichloroethane ug/L1.0 20.0 1970-130105 200.098 U21 1,2-Dichloropropane ug/L1.0 20.0 1670-13093 180.10 U19 1,3,5-Trimethylbenzene ug/L1.0 20.0 1770-13094 170.092 U19 1,3-Dichlorobenzene ug/L1.0 20.0 1670-13096 170.15 U19 1,3-Dichloropropane ug/L1.0 20.0 1670-13099 140.10 U20 1,4-Dichlorobenzene ug/L1.0 20.0 2070-130111 230.12 U22 2,2-Dichloropropane ug/L1.0 20.0 1670-13098 150.10 U20 2-Chlorotoluene ug/L1.0 20.0 1670-13095 180.10 U19 4-Chlorotoluene ug/L1.0 20.0 1770-13095 180.066 U19 4-Isopropyltoluene ug/L1.0 20.0 1770-130104 190.050 U21 Benzene ug/L1.0 20.0 1770-13089 180.13 U18 Bromobenzene ug/L1.0 20.0 1870-130102 180.11 U20 Bromochloromethane ug/L1.0 20.0 1670-13098 190.10 U20 Bromodichloromethane ug/L1.0 20.0 4470-130104 250.20 U21 Bromoform ug/L1.0 20.0 2760-14087 240.28 U17 Bromomethane ug/L1.0 20.0 1770-130102 160.082 U20 Carbon Tetrachloride ug/L1.0 20.0 1670-13098 170.069 U20 Chlorobenzene ug/L1.0 20.0 2660-140117 250.18 U23 Chloroethane ug/L1.0 20.0 1770-130102 220.083 U20 Chloroform ug/L1.0 20.0 2860-14098 200.050 U20 Chloromethane ug/L1.0 20.0 1870-13091 200.075 U18 cis-1,2-Dichloroethene ug/L1.0 20.0 1770-13099 160.073 U20 cis-1,3-Dichloropropene ug/L1.0 20.0 1670-13098 200.067 U20 Dibromochloromethane ug/L1.0 20.0 1570-13099 150.13 U20 Dibromomethane ug/L1.0 20.0 4860-14098 150.091 U20 Dichlorodifluoromethane ug/L1.0 20.0 1670-13095 190.10 U19 Ethylbenzene ug/L1.0 40.0 2570-130105 200.35 U42 Freon 113 ug/L1.0 20.0 1970-13088 260.15 U18 Hexachlorobutadiene ug/L1.0 20.0 3070-130109 210.21 U22 Isopropyl Ether ug/L1.0 20.0 1670-13097 200.13 U19 Isopropylbenzene ug/L2.0 40.0 1670-130100 170.18 U40 m,p-Xylenes ug/L2.0 20.0 1770-130107 180.070 U21 Methylene Chloride ug/L1.0 20.0 2170-130104 180.12 U21 Methyl-tert-Butyl Ether ug/L1.0 20.0 1970-13093 170.086 U19 Naphthalene ug/L1.0 20.0 1570-130100 200.074 U20 n-Butyl Benzene ug/L1.0 20.0 1670-130104 200.073 U21 n-Propyl Benzene This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 24 of 27Page 24 of 27 www.encolabs.com QUALITY CONTROL DATA Volatile Organic Compounds by GCMS - Quality Control Batch 1E10018 - EPA 5030B_MS - Continued Prepared: 05/10/2021 14:00 Analyzed: 05/10/2021 15:32Matrix Spike Dup (1E10018-MSD1) Continued Source: CE06773-07 FlagResult Units Level Result %REC Limits RPD Limit Notes Analyte PQL Spike Source %REC RPD ug/L1.0 20.0 1570-13097 170.088 U19 o-Xylene ug/L1.0 20.0 1770-130106 160.053 U21 sec-Butylbenzene ug/L1.0 20.0 2370-13091 190.082 U18 Styrene ug/L1.0 20.0 2270-13098 140.094 U20 tert-Butylbenzene ug/L1.0 20.0 2670-13099 280.099 U20 Tetrachloroethene ug/L1.0 20.0 1770-13098 170.053 U20 Toluene ug/L1.0 20.0 1970-130107 220.11 U21 trans-1,2-Dichloroethene ug/L1.0 20.0 1670-130102 210.080 U20 trans-1,3-Dichloropropene ug/L1.0 20.0 1870-130103 150.13 U21 Trichloroethene ug/L1.0 20.0 2260-14096 230.15 U19 Trichlorofluoromethane ug/L1.0 20.0 2760-14089 250.083 U18 Vinyl chloride ug/L1.0 60.0 1670-13099 170.22 U60 Xylenes (Total) ug/L 50.0 70-1304-Bromofluorobenzene 10352 ug/L 50.0 70-130Dibromofluoromethane9849 ug/L 50.0 70-130Toluene-d8 10351 This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 25 of 27Page 25 of 27 www.encolabs.com FLAGS/NOTES AND DEFINITIONS [TOC_1]Flags/Notes[TOC] The sample was analyzed at dilution. The analyte was detected in the associated method blank. The reported value is between the laboratory method detection limit (MDL) and the laboratory method reporting limit (MRL), adjusted for actual sample preparation data and moisture content, where applicable. The analyte was analyzed for but not detected to the level shown, adjusted for actual sample preparation data and moisture content, where applicable. The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. This value is considered an estimate. Method Reporting Limit. The MRL is roughly equivalent to the practical quantitation limit (PQL) and is based on the low point of the calibration curve, when applicable, sample preparation factor, dilution factor, and, in the case of soil samples, moisture content. MRL E U J D B N The analysis indicates the presence of an analyte for which there is presumptive evidence (85% or greater confidence) to make a tentative identification". P Greater than 25% concentration difference was observed between the primary and secondary GC column. The lower concentration is reported. PQL: Practical Quantitation Limit. The PQL presented is the laboratory MRL.PQL Calculated analyte - MDL/MRL reported to the highest reporting limit of the component analyses.[CALC] Internal standard outside acceptance limits. Samples results are considered estimated.QI-02 The associated laboratory control sample exhibited high bias; since the result is ND, there is no impact.QL-02 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery. QM-07 This report relates only to the sample as received by the laboratory, and may only be reproduced in full.FINAL Page 26 of 27Page 26 of 27 Page 27 of 27