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HomeMy WebLinkAboutWS-4218_13838_CA_LTRRPT_20230725 1.0 CONSULTECH ENVIRONMENTAL, LLC. 2021 Energy Dr * Apex, NC 27502 919-234-4238 * FAX 919-234-4239 July 25, 2023 North Carolina Department of Environmental Quality Division of Waste Management, UST Section 1628 Mail Service Center Raleigh, North Carolina 27699-1628 Attention: Mr. Scott Ryals Reference: Groundwater Monitoring Report Crowfoot Chevron 1180 NC HWY 150 N Winston Salem, Davidson County, NC NCDEQ Incident No: 13838 Dear Mr. Ryals: Consultech Environmental, LLC. (Consultech) is pleased to provide the North Carolina Department of Environmental Quality (NCDEQ) with this letter report detailing groundwater monitoring activities conducted at the Crowfoot Chevron site located at 1180 NC Highway 150 North in Winston Salem, Davidson County, North Carolina. The location of the facility is shown on Figure 1 and a site map is shown in Figure 2. On June 6, 2023 Consultech personnel conducted a groundwater monitoring event at MW-2 only at the request of NCDEQ. After opening the wellhead and allowing time for water level equilibration, field personnel measured the free-product level and water level in MW-2. The depth to groundwater in MW-2 was approximately 38 feet below the ground surface. No free product was detected in MW-2. This information was used to determine water level elevations and water column thickness as shown in Table 1. Field personnel sampled one monitoring well (MW-2) during this event. Prior to purging and sampling, the volume of water in the well was calculated based on the thickness of the water column. Approximately three well volumes of groundwater were removed from the monitoring well prior to sampling. Groundwater samples were collected from the monitoring well using disposable polyethylene bailers. The groundwater samples were collected in method-appropriate sampling containers supplied by the laboratory and placed on ice in coolers. All samples were shipped under chain-of-custody to Eurofins Xenco Laboratories, LLC. The samples were analyzed for semi volatile organic compounds (SVOCs) by USEPA Method 625.1. Laboratory results from this sampling event indicated all concentrations of SVOCs in the groundwater sample collected from MW-2 below laboratory detection limits. Current and historical 2 groundwater analytical results are contained in Table 2. The complete laboratory report is included in Appendix A. If you have any questions regarding this report, please contact me at jliebig@consultechenv.com or (412) 956-3553. Respectively, Consultech Environmental, LLC. John Liebig Project Manager 3 TABLES Well ID Date Installed (mm/dd/yyyy) Well Diameter (in) Casing Depth (ft BGS) Screened Interval (x to y feet BGS) Total Depth (ft BGS) Top of Casing Elevation (ft) Date Water Level Measured (mm/dd/yyyy) Depth to Water from Top of Casing (ft) NAPL Thickness (ft) Relative Groundwater Elevation (ft) MW-1 3/17/2004 2 28 28-43 43 100 4/15/2004 36.85 0 63.15 4/15/2004 36.44 0 62.98 4/5/2023 38.97 0 60.45 6/6/2023 38.51 0 60.91 4/15/2004 35.16 0 62.94 4/5/2023 37.74 0 60.36 4/15/2004 36.28 0 63.72 4/5/2023 39.22 0 60.78 NA NA 0 NA 4/5/2023 39.53 0 60.47 99.42 98.10 100 100.03 30-45 30-45 30-45 75-80 45 45 45 80 2 2 2 30 30 30 75DMW-1 MW-3 MW-4 Table 1 Monitoring Well Construction Information and Groundwater Elevation Data Crowfoot Chevron 1180 NC HWY 150 N, Winston Salem, Davidson County, NC Well Construction Details Field Measurements MW-2 4/14/2004 2 4/14/2004 4/14/2004 4/21/2004 SampleLocationDateSampled6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 6200B601/602 625 625 625 625 625 625 625 625 625 625 625 504.1 3030C/6010B VPH VPH VPH EPH EPH EPH MW-1 3/17/2004 ND 66 ND 52 ND ND 16000 ND 84 ND ND ND 320 780 190 140 ND ND ND ND ND ND ND ND 89 ND ND 0.1 ND 1100 670 240 ND ND 180 4/15/2004 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 4/5/2023 ND ND 1.6 ND ND ND ND ND ND ND ND ND ND ND ND ND 0.565 J 0.519 J 0.429 J 0.566 J 2.49 J 2.12 J ND ND ND ND ND ND 0.112 ND ND ND ND ND ND 6/6/2023 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA ND ND ND ND ND ND ND ND ND ND ND NA NA NA NA NA NA NA NA 4/15/2004 ND ND ND ND ND ND 710 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.01 370 ND ND 110 130 ND 4/5/2023 ND ND ND ND ND ND 176 ND ND ND ND ND ND ND ND ND ND 0.443 J ND 0.368 J ND ND ND ND ND ND ND ND 0.198 91.8 ND ND ND ND ND 4/15/2004 ND 230 ND 2500 ND 65 43000 540 ND ND ND ND 8,700 ND ND 14500 ND ND ND ND ND ND ND ND ND ND 160 0.61 0.0054 1000 5500 1600 1600 ND 470 4/5/2023 37.1 J 4.35 ND 153 11.8 1.61 J 543 16.3 28.9 3.87 12 3.28 836 ND ND 1410 ND ND ND ND ND ND 5.84 J 7.74 J 9.64 J 0.263 J ND ND 0.0506 1840 1560 1620 201 ND 1310 4/22/2004 ND 12 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.25 5.09 ND ND ND 120 290 ND 4/5/2023 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 0.358 J ND 0.288 J ND ND ND ND ND ND ND ND 0.0695 ND ND ND ND ND ND 6000 1 70 600 70 70 20 6 70 25 70 70 600 400 400 500 0.005 0.05 200 0.5 0.005 0.05 1 30 6 200 100 0.2 15 NS NS NS NS NS NS 6000000 5000 70000 80000 30500 70000 20000 6000 26100 11700 5900 8800 260000 28500 24100 50000 0.8 0.75 200 0.5 1.2 0.095 1000 12000 6000 550 100000 50 15000 NS NS NS NS NS NS Notes:Analytical results reported in ug/L. ND: Compound not detected above laboratory detection limit. NS No standard. J indicates estimated concentration above MDL but below RL Concentrations above NC 2L groundwater standards below GCLs in bold NA: Not Analyzed n-Butylbenznep-Isopropyltoluenesec-ButylbenzeneMTBEEthylbenzeneC9-C18AliphaticsC9-C10Aromatics1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneXylenes(Total)NaphthaleneBenzo[b]fluorantheneBenzo[g,h,i]peryleneBenzo[k]fluorantheneDibenz(a,h)anthraceneIndeno[1,2,3-cd]pyrene1-Methylnaphthalene2-MethylnaphthalenePhenanthreneNC 2L GW Standard GW Gross Contaminant Levels Contaminant of Concern ->BenzeneIsopropylbenzeneAnalytical Method -> MW-3 MW-4 DMW-1 ChloroformAcetoneMW-2 Table 2 Current and Historical Groundwater Contaminant Concentrations Crowfoot Chevron 1180 NC HWY 150 N, Winston Salem, Davidson County, NC C19-C36AliphaticsC11-C22AromaticsTolueneNaphthalenen-PropylbenzeneC9-C12AliphaticsLeadC5-C8AliphaticsIsopropylEther1,2-Dibromoethane(EDB)2,4-DimethylphenolBenzo[a]pyrene 4 FIGURES Approximate Scale 1” = 1,000’ 500’ 1987 Welcome, NC 7.5’ USGS Topographic Map Site Location Map Crowfoot Chevron (#13838) 1180 NC HWY 150 N, Winston Salem, Davidson County, NC Consultech Environmental, LLC 2021 Energy Drive, Apex, NC 27502 Compiled By: ZAB Figure No: 1 Checked By: RBS Date: April 20, 2023 SITE N Approximate Scale 1” = 200’ 100’ Google Earth Site Map Crowfoot Chevron (#13838) 1180 NC HWY 150 N, Winston Salem, Davidson County, NC Consultech Environmental, LLC 2021 Energy Drive, Apex, NC 27502 Compiled By: ZAB Figure No: 2 Checked By: RBS Date: April 20, 2023 Map Key Shallow Monitoring Wells Deep Monitoring Wells Monitoring Wells Destroyed Soil Sample Locations Approximate former location of USTs Approximate former location of pump island and product lines OE Overhead Electric MW-3 MW-1 MW-2 DMW-1 MW-4 Union Grove Rd APPENDIX A Laboratory Analytical Report ANALYTICAL REPORT PREPARED FOR Attn: Raj Shah Consultech Environmental LLC 2021 Energy Drive Apex, North Carolina 27502 Generated 6/15/2023 4:22:43 PM JOB DESCRIPTION Crowfoot Chevron JOB NUMBER 400-238775-1 See page two for job notes and contact information. Pensacola FL 32514 3355 McLemore Drive Eurofins Pensacola Page 1 of 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eurofins Pensacola Eurofins Pensacola is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins Environment Testing Southeast, LLC Project Manager. Authorization Generated 6/15/2023 4:22:43 PM Authorized for release by Chad Bechtold, Project Manager Chad.Bechtold@et.eurofinsus.com (813)690-3563 Page 2 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Laboratory Job ID: 400-238775-1 Page 3 of 20 Eurofins Pensacola6/15/2023 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: Consultech Environmental LLC Job ID: 400-238775-1 Project/Site: Crowfoot Chevron Job ID: 400-238775-1 Laboratory: Eurofins Pensacola Narrative Job Narrative 400-238775-1 Receipt The sample was received on 6/7/2023 8:59 AM. Unless otherwise noted below, the sample arrived in good condition, and, where required, properly preserved and on ice. The temperature of the cooler at receipt time was 5.7°C GC/MS Semi VOA No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page. Eurofins PensacolaPage 4 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Client Sample ID: MW-2 Lab Sample ID: 400-238775-1 No Detections. Eurofins Pensacola This Detection Summary does not include radiochemical test results. Page 5 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: Consultech Environmental LLC Job ID: 400-238775-1 Project/Site: Crowfoot Chevron Lab Sample ID Client Sample ID Matrix Collected Received 400-238775-1 MW-2 Water 06/06/23 11:00 06/07/23 08:59 Eurofins PensacolaPage 6 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Lab Sample ID: 400-238775-1Client Sample ID: MW-2 Matrix: WaterDate Collected: 06/06/23 11:00 Date Received: 06/07/23 08:59 Method: EPA 625.1 - Semivolatile Organic Compounds (GC/MS) RL MDL <0.171 U 9.50 0.171 ug/L 06/09/23 12:16 06/13/23 19:59 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,2,4-Trichlorobenzene 9.50 0.142 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.142 U1-Methylnaphthalene 9.50 0.152 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.152 U *-2,2'-oxybis(1-chloropropane) 9.50 3.51 ug/L 06/09/23 12:16 06/13/23 19:59 1<3.51 U2,4,5-Trichlorophenol 9.50 2.47 ug/L 06/09/23 12:16 06/13/23 19:59 1<2.47 U2,4,6-Trichlorophenol 9.50 1.90 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.90 U2,4-Dichlorophenol 9.50 1.90 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.90 U2,4-Dimethylphenol 28.5 3.23 ug/L 06/09/23 12:16 06/13/23 19:59 1<3.23 U2,4-Dinitrophenol 9.50 1.80 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.80 U2,4-Dinitrotoluene 9.50 1.80 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.80 U2,6-Dinitrotoluene 9.50 0.133 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.133 U2-Chloronaphthalene 9.50 2.09 ug/L 06/09/23 12:16 06/13/23 19:59 1<2.09 U2-Chlorophenol 9.50 0.123 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.123 U2-Methylnaphthalene 9.50 1.71 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.71 U2-Methylphenol 9.50 2.09 ug/L 06/09/23 12:16 06/13/23 19:59 1<2.09 U2-Nitroaniline 9.50 2.28 ug/L 06/09/23 12:16 06/13/23 19:59 1<2.28 U2-Nitrophenol 19.0 0.370 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.370 U3 & 4 Methylphenol 9.50 2.47 ug/L 06/09/23 12:16 06/13/23 19:59 1<2.47 U3,3'-Dichlorobenzidine 9.50 1.71 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.71 U3-Nitroaniline 9.50 1.52 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.52 U4,6-Dinitro-2-methylphenol 9.50 0.190 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.190 U4-Bromophenyl phenyl ether 9.50 3.61 ug/L 06/09/23 12:16 06/13/23 19:59 1<3.61 U4-Chloro-3-methylphenol 9.50 3.23 ug/L 06/09/23 12:16 06/13/23 19:59 1<3.23 U4-Chloroaniline 9.50 1.90 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.90 U4-Chlorophenyl phenyl ether 9.50 1.42 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.42 U4-Nitroaniline 9.50 1.99 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.99 U4-Nitrophenol 9.50 0.152 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.152 UAcenaphthene 9.50 0.161 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.161 UAcenaphthylene 9.50 0.171 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.171 UAnthracene 23.7 19.0 ug/L 06/09/23 12:16 06/13/23 19:59 1<19.0 UBenzidine 9.50 0.171 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.171 UBenzo[a]anthracene 9.50 0.114 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.114 UBenzo[a]pyrene 9.50 0.142 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.142 UBenzo[b]fluoranthene 9.50 0.218 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.218 UBenzo[g,h,i]perylene 9.50 0.152 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.152 UBenzo[k]fluoranthene 28.5 6.93 ug/L 06/09/23 12:16 06/13/23 19:59 1<6.93 UBenzoic acid 9.50 1.90 ug/L 06/09/23 12:16 06/14/23 20:51 1<1.90 UBenzyl alcohol 9.50 0.152 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.152 UBis(2-chloroethoxy)methane 9.50 2.56 ug/L 06/09/23 12:16 06/13/23 19:59 1<2.56 UBis(2-chloroethyl)ether 9.50 4.75 ug/L 06/09/23 12:16 06/13/23 19:59 1<4.75 UBis(2-ethylhexyl) phthalate 9.50 0.180 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.180 UButyl benzyl phthalate 9.50 0.180 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.180 UChrysene 9.50 0.228 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.228 UDibenz(a,h)anthracene 9.50 0.161 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.161 UDibenzofuran 9.50 0.228 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.228 UDiethyl phthalate 9.50 0.161 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.161 UDimethyl phthalate 9.50 1.33 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.33 UDi-n-butyl phthalate 9.50 0.161 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.161 UDi-n-octyl phthalate 9.50 0.171 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.171 UFluoranthene Eurofins Pensacola Page 7 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Lab Sample ID: 400-238775-1Client Sample ID: MW-2 Matrix: WaterDate Collected: 06/06/23 11:00 Date Received: 06/07/23 08:59 Method: EPA 625.1 - Semivolatile Organic Compounds (GC/MS) (Continued) RL MDL <0.171 U 9.50 0.171 ug/L 06/09/23 12:16 06/13/23 19:59 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Fluorene 9.50 0.161 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.161 UHexachlorobenzene 9.50 3.42 ug/L 06/09/23 12:16 06/13/23 19:59 1<3.42 UHexachlorobutadiene 19.0 2.47 ug/L 06/09/23 12:16 06/13/23 19:59 1<2.47 UHexachlorocyclopentadiene 9.50 3.99 ug/L 06/09/23 12:16 06/13/23 19:59 1<3.99 UHexachloroethane 9.50 0.209 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.209 UIndeno[1,2,3-cd]pyrene 9.50 0.133 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.133 UIsophorone 9.50 0.161 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.161 UNaphthalene 9.50 0.123 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.123 UNitrobenzene 9.50 3.13 ug/L 06/09/23 12:16 06/13/23 19:59 1<3.13 UN-Nitrosodi-n-propylamine 9.50 0.171 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.171 UN-Nitrosodiphenylamine 19.0 1.33 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.33 UPentachlorophenol 9.50 0.171 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.171 UPhenanthrene 9.50 1.04 ug/L 06/09/23 12:16 06/13/23 19:59 1<1.04 UPhenol 9.50 0.199 ug/L 06/09/23 12:16 06/13/23 19:59 1<0.199 UPyrene 2,4,6-Tribromophenol 67 15-135 06/09/23 12:16 06/13/23 19:59 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 2-Fluorobiphenyl 64 06/09/23 12:16 06/13/23 19:59 132-109 2-Fluorophenol 51 06/09/23 12:16 06/13/23 19:59 110-104 Nitrobenzene-d5 75 06/09/23 12:16 06/13/23 19:59 131-111 Phenol-d5 41 06/09/23 12:16 06/13/23 19:59 110-110 Terphenyl-d14 89 06/09/23 12:16 06/13/23 19:59 130-129 Eurofins Pensacola Page 8 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Qualifiers GC/MS Semi VOA Qualifier Description *-LCS and/or LCSD is outside acceptance limits, low biased. Qualifier U Indicates the analyte was analyzed for but not detected. Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Pensacola Page 9 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Method: 625.1 - Semivolatile Organic Compounds (GC/MS) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (15-135)(32-109)(10-104)(31-111)(10-110)(30-129) TBP FBP 2FP NBZ PHL TPHL 67 64 51 75 41 89400-238775-1 Percent Surrogate Recovery (Acceptance Limits) MW-2 59 55 40 3064 81MB 400-628571/1-A Method Blank 101 73 38 2554 90MB 400-628571/1-A Method Blank Surrogate Legend TBP = 2,4,6-Tribromophenol FBP = 2-Fluorobiphenyl 2FP = 2-Fluorophenol NBZ = Nitrobenzene-d5 PHL = Phenol-d5 TPHL = Terphenyl-d14 Eurofins Pensacola Page 10 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron GC/MS Semi VOA Prep Batch: 628571 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 625400-238775-1 MW-2 Total/NA Water 625MB 400-628571/1-A Method Blank Total/NA Analysis Batch: 628972 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 625.1 628571400-238775-1 MW-2 Total/NA Water 625.1 628571MB 400-628571/1-A Method Blank Total/NA Analysis Batch: 629231 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 625.1 628571400-238775-1 MW-2 Total/NA Water 625.1 628571MB 400-628571/1-A Method Blank Total/NA Eurofins Pensacola Page 11 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Method: 625.1 - Semivolatile Organic Compounds (GC/MS) Client Sample ID: Method BlankLab Sample ID: MB 400-628571/1-A Matrix: Water Prep Type: Total/NA Analysis Batch: 628972 Prep Batch: 628571 RL MDL 1,2,4-Trichlorobenzene <0.180 U 10.0 0.180 ug/L 06/09/23 12:16 06/13/23 17:10 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.150 U 0.15010.0 ug/L 06/09/23 12:16 06/13/23 17:10 11-Methylnaphthalene <0.160 U 0.16010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12,2'-oxybis(1-chloropropane) <3.70 U 3.7010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12,4,5-Trichlorophenol <2.60 U 2.6010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12,4,6-Trichlorophenol <2.00 U 2.0010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12,4-Dichlorophenol <2.00 U 2.0010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12,4-Dimethylphenol <3.40 U 3.4030.0 ug/L 06/09/23 12:16 06/13/23 17:10 12,4-Dinitrophenol <1.90 U 1.9010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12,4-Dinitrotoluene <1.90 U 1.9010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12,6-Dinitrotoluene <0.140 U 0.14010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12-Chloronaphthalene <2.20 U 2.2010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12-Chlorophenol <0.130 U 0.13010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12-Methylnaphthalene <1.80 U 1.8010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12-Methylphenol <2.20 U 2.2010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12-Nitroaniline <2.40 U 2.4010.0 ug/L 06/09/23 12:16 06/13/23 17:10 12-Nitrophenol <0.390 U 0.39020.0 ug/L 06/09/23 12:16 06/13/23 17:10 13 & 4 Methylphenol <2.60 U 2.6010.0 ug/L 06/09/23 12:16 06/13/23 17:10 13,3'-Dichlorobenzidine <1.80 U 1.8010.0 ug/L 06/09/23 12:16 06/13/23 17:10 13-Nitroaniline <1.60 U 1.6010.0 ug/L 06/09/23 12:16 06/13/23 17:10 14,6-Dinitro-2-methylphenol <0.200 U 0.20010.0 ug/L 06/09/23 12:16 06/13/23 17:10 14-Bromophenyl phenyl ether <3.80 U 3.8010.0 ug/L 06/09/23 12:16 06/13/23 17:10 14-Chloro-3-methylphenol <3.40 U 3.4010.0 ug/L 06/09/23 12:16 06/13/23 17:10 14-Chloroaniline <2.00 U 2.0010.0 ug/L 06/09/23 12:16 06/13/23 17:10 14-Chlorophenyl phenyl ether <1.50 U 1.5010.0 ug/L 06/09/23 12:16 06/13/23 17:10 14-Nitroaniline <2.10 U 2.1010.0 ug/L 06/09/23 12:16 06/13/23 17:10 14-Nitrophenol <0.160 U 0.16010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Acenaphthene <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Acenaphthylene <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Anthracene <20.0 U 20.025.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Benzidine <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Benzo[a]anthracene <0.120 U 0.12010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Benzo[a]pyrene <0.150 U 0.15010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Benzo[b]fluoranthene <0.230 U 0.23010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Benzo[g,h,i]perylene <0.160 U 0.16010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Benzo[k]fluoranthene <7.30 U 7.3030.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Benzoic acid <2.00 U 2.0010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Benzyl alcohol <0.160 U 0.16010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Bis(2-chloroethoxy)methane <2.70 U 2.7010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Bis(2-chloroethyl)ether <5.00 U 5.0010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Bis(2-ethylhexyl) phthalate <0.190 U 0.19010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Butyl benzyl phthalate <0.190 U 0.19010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Chrysene <0.240 U 0.24010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Dibenz(a,h)anthracene <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Dibenzofuran <0.240 U 0.24010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Diethyl phthalate <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Dimethyl phthalate <1.40 U 1.4010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Di-n-butyl phthalate <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Di-n-octyl phthalate Eurofins Pensacola Page 12 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Method: 625.1 - Semivolatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-628571/1-A Matrix: Water Prep Type: Total/NA Analysis Batch: 628972 Prep Batch: 628571 RL MDL Fluoranthene <0.180 U 10.0 0.180 ug/L 06/09/23 12:16 06/13/23 17:10 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Fluorene <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Hexachlorobenzene <3.60 U 3.6010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Hexachlorobutadiene <2.60 U 2.6020.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Hexachlorocyclopentadiene <4.20 U 4.2010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Hexachloroethane <0.220 U 0.22010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Indeno[1,2,3-cd]pyrene <0.140 U 0.14010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Isophorone <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Naphthalene <0.130 U 0.13010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Nitrobenzene <3.30 U 3.3010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1N-Nitrosodi-n-propylamine <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1N-Nitrosodiphenylamine <1.40 U 1.4020.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Pentachlorophenol <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Phenanthrene <1.10 U 1.1010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Phenol <0.210 U 0.21010.0 ug/L 06/09/23 12:16 06/13/23 17:10 1Pyrene 2,4,6-Tribromophenol 59 15-135 06/13/23 17:10 1 MB MB Surrogate 06/09/23 12:16 Dil FacPreparedAnalyzedQualifierLimits%Recovery 55 06/09/23 12:16 06/13/23 17:10 12-Fluorobiphenyl 32-109 40 06/09/23 12:16 06/13/23 17:10 12-Fluorophenol 10-104 64 06/09/23 12:16 06/13/23 17:10 1Nitrobenzene-d5 31-111 30 06/09/23 12:16 06/13/23 17:10 1Phenol-d5 10-110 81 06/09/23 12:16 06/13/23 17:10 1Terphenyl-d14 30-129 Client Sample ID: Method BlankLab Sample ID: MB 400-628571/1-A Matrix: Water Prep Type: Total/NA Analysis Batch: 629231 Prep Batch: 628571 RL MDL 1,2,4-Trichlorobenzene <0.180 U 10.0 0.180 ug/L 06/09/23 12:16 06/14/23 19:55 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.150 U 0.15010.0 ug/L 06/09/23 12:16 06/14/23 19:55 11-Methylnaphthalene <0.160 U 0.16010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12,2'-oxybis(1-chloropropane) <3.70 U 3.7010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12,4,5-Trichlorophenol <2.60 U 2.6010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12,4,6-Trichlorophenol <2.00 U 2.0010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12,4-Dichlorophenol <2.00 U 2.0010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12,4-Dimethylphenol <3.40 U 3.4030.0 ug/L 06/09/23 12:16 06/14/23 19:55 12,4-Dinitrophenol <1.90 U 1.9010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12,4-Dinitrotoluene <1.90 U 1.9010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12,6-Dinitrotoluene <0.140 U 0.14010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12-Chloronaphthalene <2.20 U 2.2010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12-Chlorophenol <0.130 U 0.13010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12-Methylnaphthalene <1.80 U 1.8010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12-Methylphenol <2.20 U 2.2010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12-Nitroaniline <2.40 U 2.4010.0 ug/L 06/09/23 12:16 06/14/23 19:55 12-Nitrophenol <0.390 U 0.39020.0 ug/L 06/09/23 12:16 06/14/23 19:55 13 & 4 Methylphenol <2.60 U 2.6010.0 ug/L 06/09/23 12:16 06/14/23 19:55 13,3'-Dichlorobenzidine Eurofins Pensacola Page 13 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Method: 625.1 - Semivolatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-628571/1-A Matrix: Water Prep Type: Total/NA Analysis Batch: 629231 Prep Batch: 628571 RL MDL 3-Nitroaniline <1.80 U 10.0 1.80 ug/L 06/09/23 12:16 06/14/23 19:55 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <1.60 U 1.6010.0 ug/L 06/09/23 12:16 06/14/23 19:55 14,6-Dinitro-2-methylphenol <0.200 U 0.20010.0 ug/L 06/09/23 12:16 06/14/23 19:55 14-Bromophenyl phenyl ether <3.80 U 3.8010.0 ug/L 06/09/23 12:16 06/14/23 19:55 14-Chloro-3-methylphenol <3.40 U 3.4010.0 ug/L 06/09/23 12:16 06/14/23 19:55 14-Chloroaniline <2.00 U 2.0010.0 ug/L 06/09/23 12:16 06/14/23 19:55 14-Chlorophenyl phenyl ether <1.50 U 1.5010.0 ug/L 06/09/23 12:16 06/14/23 19:55 14-Nitroaniline <2.10 U 2.1010.0 ug/L 06/09/23 12:16 06/14/23 19:55 14-Nitrophenol <0.160 U 0.16010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Acenaphthene <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Acenaphthylene <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Anthracene <20.0 U 20.025.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Benzidine <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Benzo[a]anthracene <0.120 U 0.12010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Benzo[a]pyrene <0.150 U 0.15010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Benzo[b]fluoranthene <0.230 U 0.23010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Benzo[g,h,i]perylene <0.160 U 0.16010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Benzo[k]fluoranthene <7.30 U 7.3030.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Benzoic acid <2.00 U 2.0010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Benzyl alcohol <0.160 U 0.16010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Bis(2-chloroethoxy)methane <2.70 U 2.7010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Bis(2-chloroethyl)ether <5.00 U 5.0010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Bis(2-ethylhexyl) phthalate <0.190 U 0.19010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Butyl benzyl phthalate <0.190 U 0.19010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Chrysene <0.240 U 0.24010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Dibenz(a,h)anthracene <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Dibenzofuran <0.240 U 0.24010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Diethyl phthalate <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Dimethyl phthalate <1.40 U 1.4010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Di-n-butyl phthalate <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Di-n-octyl phthalate <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Fluoranthene <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Fluorene <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Hexachlorobenzene <3.60 U 3.6010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Hexachlorobutadiene <2.60 U 2.6020.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Hexachlorocyclopentadiene <4.20 U 4.2010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Hexachloroethane <0.220 U 0.22010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Indeno[1,2,3-cd]pyrene <0.140 U 0.14010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Isophorone <0.170 U 0.17010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Naphthalene <0.130 U 0.13010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Nitrobenzene <3.30 U 3.3010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1N-Nitrosodi-n-propylamine <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1N-Nitrosodiphenylamine <1.40 U 1.4020.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Pentachlorophenol <0.180 U 0.18010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Phenanthrene <1.10 U 1.1010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Phenol <0.210 U 0.21010.0 ug/L 06/09/23 12:16 06/14/23 19:55 1Pyrene Eurofins Pensacola Page 14 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Method: 625.1 - Semivolatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-628571/1-A Matrix: Water Prep Type: Total/NA Analysis Batch: 629231 Prep Batch: 628571 2,4,6-Tribromophenol 101 15-135 06/14/23 19:55 1 MB MB Surrogate 06/09/23 12:16 Dil FacPreparedAnalyzedQualifierLimits%Recovery 73 06/09/23 12:16 06/14/23 19:55 12-Fluorobiphenyl 32-109 38 06/09/23 12:16 06/14/23 19:55 12-Fluorophenol 10-104 54 06/09/23 12:16 06/14/23 19:55 1Nitrobenzene-d5 31-111 25 06/09/23 12:16 06/14/23 19:55 1Phenol-d5 10-110 90 06/09/23 12:16 06/14/23 19:55 1Terphenyl-d14 30-129 Eurofins Pensacola Page 15 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: Consultech Environmental LLC Job ID: 400-238775-1 Project/Site: Crowfoot Chevron Client Sample ID: MW-2 Lab Sample ID: 400-238775-1 Matrix: WaterDate Collected: 06/06/23 11:00 Date Received: 06/07/23 08:59 Prep 625 STC06/09/23 12:16 EET PEN628571 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 263.2 mL 1 mL Analysis 625.1 1 628972 06/13/23 19:59 S1B EET PENTotal/NA 0.4 mL 0.4 mL Prep 625 628571 06/09/23 12:16 STC EET PENTotal/NA 263.2 mL 1 mL Analysis 625.1 1 629231 06/14/23 20:51 S1B EET PENTotal/NA 0.4 mL 0.4 mL Client Sample ID: Method Blank Lab Sample ID: MB 400-628571/1-A Matrix: WaterDate Collected: N/A Date Received: N/A Prep 625 STC06/09/23 12:16 EET PEN628571 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 250 mL 1 mL Analysis 625.1 1 628972 06/13/23 17:10 S1B EET PENTotal/NA 0.4 mL 0.4 mL Prep 625 628571 06/09/23 12:16 STC EET PENTotal/NA 250 mL 1 mL Analysis 625.1 1 629231 06/14/23 19:55 S1B EET PENTotal/NA 0.4 mL 0.4 mL Laboratory References: EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 16 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 400-238775-1Client: Consultech Environmental LLC Project/Site: Crowfoot Chevron Method Method Description LaboratoryProtocol EPA625.1 Semivolatile Organic Compounds (GC/MS)EET PEN EPA625Liquid-Liquid Extraction EET PEN Protocol References: EPA = US Environmental Protection Agency Laboratory References: EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Pensacola Page 17 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Accreditation/Certification Summary Client: Consultech Environmental LLC Job ID: 400-238775-1 Project/Site: Crowfoot Chevron Laboratory: Eurofins Pensacola The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date North Carolina (WW/SW)State 314 12-31-23 Eurofins Pensacola Page 18 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 19 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: Consultech Environmental LLC Job Number: 400-238775-1 Login Number: 238775 Question Answer Comment Creator: Roberts, Alexis J List Source: Eurofins Pensacola List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. N/AThe cooler's custody seal, if present, is intact. N/ASample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded.5.7°C IR11 TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs N/AContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Pensacola Page 20 of 20 6/15/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15