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HomeMy WebLinkAboutWS-3446_10740_CA_LTR_20230614 2725 E. Millbrook Road, Suite 121 Raleigh, NC 27604 Telephone 919-871-0999 www.atcgroupservices.com ATC Project No. SLC1074004 NCDEQ State Lead Program June 14, 2023 Mr. Hassan Osman North Carolina Department of Environmental Quality Division of Waste Management – Underground Storage Tank Section 1646 Mail Service Center Raleigh, North Carolina 27699 Subject: Groundwater Monitoring Letter Report Hub Center Service Station 2805 Old NC Highway 87 Elon, Alamance County, North Carolina NCDEQ Incident No. 10740 Dear Mr. Osman: ATC Associates of North Carolina, P.C. (ATC) is pleased to submit the results of a sampling event conducted on March 28, 2023, for the former Hub Center Service Station site located at 2805 Old NC Highway 87 in Elon, North Carolina. This sampling event was performed to determine if constituent concentrations in the local groundwater were below their Title 15A NCAC 02L .0202 Groundwater Quality Standards (2L Standards). A site topographic map is included as Figure 1. Currently, the site is developed with the former store building and associated outbuildings and a wellhouse; however, the property is currently vacant. The sampling activities were performed based on a January 17, 2023, Task Authorization (TA-04) by the Trust Fund Branch of the Underground Storage Tank (UST) Section, Division of Waste Management, North Carolina Department of Environmental Quality (NCDEQ). The work is being performed as part of the State Lead Contract #N122019A between NCDEQ and ATC. The former Hub Service Center Station previously operated two 1,000-gallon gasoline USTs and one 275- gallon kerosene UST, which were closed by removal in 1991 and 1993. Three monitoring wells are associated with the site (MW-1, MW-2, and MW-3) (Figure 2). Twenty-seven water supply wells have been previously identified within 1,000 feet of the site, one of which is located on the site property. Municipal water is not available to the site or surrounding properties. A water supply well location map is included as Figure 3. Water supply information obtained from the prior subcontractor is included as Appendix A. On March 28, 2023, ATC personnel mobilized to the site to collect a groundwater sample from monitoring well MW-2. ATC also attempted to collect a sample from onsite water supply well WSW-4; however, a sample could not be collected as the well did not have power during the event. Light non-aqueous phase liquid was not observed in the monitoring well. Depth to groundwater was measured at 26.44 feet below top of casing (btoc) in MW-2. The local groundwater has historically flowed in the easterly direction. Monitoring well construction details and current and historical groundwater elevation data are included in Table 1. Field parameter data including temperature, conductivity, pH, and oxygen reduction potential recorded during the sampling event are included in Table 2. Field notes from the March 2023 site visit are included in Appendix B. Photographs of the site and associated features are included in Appendix C. The water sample was collected in laboratory provided containers and shipped under chain-of-custody to SGS North America, Inc. in Scott, Louisiana for analysis. The sample was analyzed for volatile organic compounds (VOCs) by Method 6200B, semi-volatile organic compounds (SVOCs) by Method 625.1, Massachusetts Hub Center Service Station June 14, 2023 Page 2 of 3 ATC Project No. SLC1074004 NCDEQ State Lead Program Department of Environmental Protection – Volatile Petroleum Hydrocarbons (MADEP VPH), and MADEP – Extractable Petroleum Hydrocarbons (EPH). A field blank was also collected during the sampling event and analyzed for VOCs by Method 6200B. Laboratory analysis detected bis(2-ethylhexyl)phthalate (6.4 micrograms per liter [µg/L]), 1-methylnaphthalene (1.3 µg/L), C9-C18 aliphatic hydrocarbons (14,144 µg/L), and C9-C22 aromatic hydrocarbons (1,554 µg/L) exceeding the 2L Standards in MW-2. No constituent was detected exceeding the Gross Contamination Levels (GCLs). Groundwater analytical data is summarized in Table 3. The laboratory analytical report and chain-of- custody forms are included in Appendix D. As part of ATC’s quality assurance and quality control (QA and QC) measures, a data review of the laboratory report was conducted. During the review, it was concluded the sample was received by the laboratory in acceptable condition and properly preserved. The sample was analyzed within the correct holding times, and the chain of custody was properly completed by all parties. The laboratory QC report shows an internal blank was analyzed for each method that was used for the original sample. The laboratory fortified blank (LFB) and laboratory control sample (LCS) data results were also provided for each analytical method. A field blank sample (FB-1) was also analyzed for VOCs. Acetone (1.2 µg/L) was detected in the field blank sample below its 2L Standard. Acetone was not detected in the water sample collected from MW-2. Additionally, acetone is a common laboratory contaminant and is not typically associated with petroleum releases. Refer to the laboratory report in Appendix D for details regarding QA results for the laboratory samples and any noted exceptions. Overall, ATC concludes that the laboratory results are usable and any exceptions do not significantly impact the conclusions presented in this report. Based on the results of the March 2023 sampling event, dissolved constituents exceeding the 2L Standards remain at the site. The onsite water supply well (WSW-4) was not sampled during the event; however, previous assessments conducted at the site identified toluene (0.23 µg/L) in WSW-4 below the 2L Standards in November 2019. ATC recommends conducting additional semi-annual sampling events on select monitoring wells (MW-2) and the onsite water supply well (WSW-4). If the dissolved constituent concentrations are found to be below the 2L Standards, then the site would be a candidate for closure. ATC also recommends performing an updated receptor survey for the site, as it appears the most recent survey was conducted in 2011. If you have any questions or require additional information, please contact our office at (919) 871-0999. Sincerely, ATC Associates of North Carolina, P.C. Chris Hanley, P.G. Ashley M. W. Offer, P.G. Project Geologist Senior Project Manager Hub Center Service Station June 14, 2023 Page 3 of 3 ATC Project No. SLC1074004 NCDEQ State Lead Program Attachments: Table 1 – Groundwater Elevation Data Table 2 – Field Parameters Table 3 – Groundwater Analytical Data Table 4 – Water Supply Well Analytical Data Figure 1 – Topographic Map Figure 2 – Site Plan Figure 3 – Water Supply Well Location Map Appendix A – Historical Public and Private Water Supply Well Information Appendix B – Field Notes Appendix C – Site Photographs Appendix D – Laboratory Analytical Results ATC Project No. SLC1074004 NCDEQ State Lead Program TABLES TABLE 1 GROUNDWATER ELEVATION DATA HUB CENTER SERVICE STATION 2805 OLD NC HIGHWAY 87 ELON, ALAMANCE COUNTY, NORTH CAROLINA NCDEQ INCIDENT #10740 Well ID Date Installed Date Water Level Measured Well Casing Depth (ft BGS) Well Casing Diameter (in) Screen Interval (ft BGS) Well Material Depth of Well (ft BGS) Top of Casing Elevation* (ft) Depth to Water from Top of Casing (ft) Groundwater Elevation* (ft) 7/21/2011 25.68 74.32 7/19/2012 26.89 73.11 4/20/2015 25.23 74.77 11/18/2016 27.52 72.48 1/28/2018 27.92 72.08 11/21/2019 26.06 73.94 1/4/2021 NM NM 1/13/2022 NM NM 8/16/2022 27.23 72.77 7/21/2011 26.53 73.75 7/19/2012 27.97 72.31 4/20/2015 25.75 74.53 11/18/2016 28.24 72.04 1/28/2018 29.02 71.26 11/21/2019 27.13 73.15 1/4/2021 21.97 78.31 1/13/2022 27.15 73.13 8/16/2022 28.36 71.92 3/28/2023 26.44 73.84 7/21/2011 25.93 74.88 7/19/2012 28.41 72.40 4/20/2015 25.41 75.40 11/18/2016 27.58 73.23 1/28/2018 28.62 72.19 11/21/2019 26.19 74.62 1/4/2021 NM NM 1/13/2022 NM NM 8/16/2022 27.57 73.24 1. NM = Not Measured 2. BGS = Below Ground Surface 3. ft = Feet 4. * = Elevations surveyed relative to an arbitrary benchmark (MW-1 top of casing) 5. in = Inches. MW-3 6/28/2004 0 to 20 2 MW-2 6/28/2004 0 to 20 2 MW-1 6/28/2004 0 to 20 2 20 to 35 PVC 20 to 35 PVC 35.00 100.81 35.00 100.00 20 to 35 PVC 35.00 100.28 TABLE 2 FIELD PARAMETERS HUB CENTER SERVICE STATION 2805 OLD NC HIGHWAY 87 ELON, ALAMANCE COUNTY, NORTH CAROLINA NCDEQ INCIDENT #10740 MW-1 8/16/2022 20.1 1.52 161.4 5.90 277.5 1/4/2021 16.8 1.49 135.1 5.35 160.6 1/13/2022 13.5 NM 175.6 5.74 129.1 8/16/2022 21.0 1.33 110.2 5.99 139.3 3/28/2023 18.51 2.17 112.0 5.69 -2.2 MW-3 8/16/2022 19.9 2.17 154.2 5.79 250.6 Notes: 1. mg/L = Milligrams per Liter. 2. °C = Degrees Celcius. 3. μS/cm = MicroSiemens per Centimeter. 4. mV = Millivolts. 5. SU = Standard Units. 6. NM = Not Measured due to equipment malfunction. MW-2 Oxygen Reduction Potential (mV)Monitoring Well Date Sampled Temperature (°C) Conductivity (µS/cm) Dissolved Oxygen (mg/L) pH (SU) TABLE 3 GROUNDWATER ANALYTICAL DATA HUB CENTER SERVICE STATION 2805 OLD NC HIGHWAY 87 ELON, ALAMANCE COUNTY, NORTH CAROLINA NCDEQ INCIDENT #10740 504.1 BenzeneTolueneEthylbenzeneTotal Xylenessec-Butylbenzenetert-butylbenzeneIsopropylbenzene1,2-Dibromoethane (Ethylene dibrmide)Naphthalene1,2-Dibromoethane (Ethylene dibrmide)Bis(2-Ethylhexyl)PhthalateFluoreneDibenzofuran1-Methylnaphthalene2-MethylnaphthaleneNaphthaleneC5-C8 AliphaticsC9-C18 AliphaticsC19-C36 AliphaticsC9-C22 AromaticsMW-1 8/16/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NM <4.7 <0.19 <4.7 <0.19 <0.19 <0.19 <100 <380 16.5 J 396 1/4/2021 <1.00 <1.00 <1.00 <3.00 <1.00 <1.00 <1.00 <1.00 <1.00 <0.0200 1.03 J <1.00 ND ND ND ND <100 1,909 33.4 J 298.5 1/13/2022 <1.00 <1.00 <1.00 <3.00 0.150 J 0.143 J 0.108 J <1.00 <1.00 NA <3.00 0.114 J ND ND ND ND <100 272 <100 116.9 8/16/2022 <0.50 <0.50 <0.50 <0.50 <0.50 0.23 J 0.16 J <0.50 <0.50 NM <4.7 0.27 0.20 J 1.6 1.3 0.77 68.2 J 4,977 117 J 932 3/28/2023 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 0.95 NM 6.4 <0.20 <5.1 1.3 0.90 <0.20 <100 14,144 462 1,554 MW-3 8/16/2022 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 NM <5.6 <0.22 <5.6 <0.22 <0.22 <0.22 225 <380 265 J 480 1 600 600 500 70 70 70 0.02 6 0.02 3 300 28 1 30 6 400 700 10,000 200 5,000 260,000 80,000 50,000 8,800 14,750 30,500 50 6,000 50 135 845 1,550 1,000 12,000 6,000 NE NE NE NE Notes: 1. "<" = Not Detected at or above the laboratory reporting limit 2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb) 3. Concentrations in bold print equal or exceed the NCDEQ 15A 2L NCAC Groundwater Standard (2L GW Standard) 4. GCL = Gross Contamination Level 5. MTBE = Methyl Tertiary Butyl Ether 6. J = Estimated value below method reporting limit 7. BOLD = Concentrations exceed 2L Standards 8. NE = Not Established 9. NA = Not Analyzed 10. ND = Not Detected MADEP EPH/VPH 2L GW Standard GCL Monitoring Well Date Method 6200B 625.1 MW-2 TABLE 4 WATER SUPPLY WELL ANALYTICAL DATA HUB CENTER SERVICE STATION 2805 OLD NC HIGHWAY 87 ELON, ALAMANCE COUNTY, NORTH CAROLINA NCDEQ INCIDENT 10740 625.1 BenzeneTolueneEthylbenzeneTotal XylenesBis(2-Ethylhexyl)Phthalate1/4/2021 <1.00 <1.00 <1.00 <3.00 <3.00 1/13/2022 8/16/2022 3/28/2023 1 600 600 500 3 5,000 260,000 80,000 50,000 170 Notes: 1. "<" = Not Detected at or above the laboratory reporting limit 2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion (ppb) 3. Concentrations in bold print equal or exceed the NCDEQ 15A 2L NCAC Groundwater Standard (2L Standard) 4. GCL = Gross Contamination Level Not Sampled (no power to pump) Not Sampled (no power to pump) Not Sampled (no power to pump) WSW-4 GCL Monitoring Well Date Method 6200B 2L GW Standard ATC Project No. SLC1074004 NCDEQ State Lead Program FIGURES SITE ATC Project No. SLC1074004 NCDEQ State Lead Program APPENDIX A HISTORICAL PUBLIC AND PRIVATE WATER SUPPLY WELL INFORMATION TABLE 5 PUBLIC AND PRIVATE WATER SUPPLY WELL INFORMATION Hub Center Service Station (Incident No.: 10740, UST #: WS-3446) 2805 Old NC Highway 87, Elon, Alamance County, North Carolina S&ME Project No. 4305-17-224B #REF!Date Revised: 12/10/2019 Well #Well Owner / User (indicate which)Owner Address Property Address Well Use Well Depth (ft-BGS) Type of Well Well Casing Depth (ft-BGS) Distance (ft) / Direction from Source Gradient from Source (Up or Down) WSW-1 (PW-1) Berea Christian Church- owner/user (Vaughn Willoughby-Trustee Chairman) 2848 Old NC 87 Highway, Elon, NC 27244 2823 Old NC 87 Highway vacant 150 --230 east northeast Down WSW-2 (PW-2)Claire & Lenora Harless 2818 Old NC 87 Highway, Elon, NC 27244 2818 Old NC 87 Highway drinking ---150 north northwest Up WSW-3 (PW-3) Fairview United Methodist Church owner/user (church parsonage) 3128 Osceola Road Elon, NC 27244 3128 Osceola Road drinking ---270 southeast Down WSW-4 (PW-4) Fairview United Methodist Church- owner; commercial use-user 3128 Osceola Road Elon, NC 27244 2805 Old NC 87 Highway; subject property drinking ---60 east Down WSW-5 Altamahaw Ossipee Community Association, Inc.-owner; Altamahaw-Ossipee Volunteer Fire Dept.- user 1905 Gwyn Road, Burlington, 27215 2806 Old NC 87 Highway drinking irrigation ---420 west northwest Up WSW-6 Archie & Minnie Gaster-owner 3208 Osceola Road Elon, NC 27244 3208 Osceola Road drinking ---250 southwest Up WSW-7 Charles Andrews-owner/user 3218 Osceola Road Elon, NC 27244 3218 Osceola Road drinking 186 --700 southwest Up WSW-8 Alamance County Board of Education- owner; Altamahaw-Ossipee Elementary School-user 1712 Vaughn Road Burlington, NC 27217-2916 2832 North 87 Highway drinking ---650 east Down WSW-9 Jackie & Debbie Alcon-owner/ (daughter user) 2746 Old NC 87 Highway Elon, NC 27244 2746 Old NC 87 Highway drinking ---540 south southeast Down WSW-10 Jackie & Debbie Alcon-owner/user 2746 Old NC 87 Highway Elon, NC 27244 2778 Old NC 87 Highway drinking 190 --550 south Down WSW-11 Howard Hensley-owner/user 2790 Old NC 87 Highway Elon, NC 27244 2790 Old NC 87 Highway drinking 103 --400 south southwest Down WSW-12 David & Jeanette Kowalski-owner/user 2826 Old NC 87 Highway Elon, NC 27244 2826 Old NC 87 Highway drinking ---450 northwest Up WSW-13 Church Well Berea Christian Church- owner/user (Vaughn Willoughby-Trustee Chairman) 2848 Old NC 87 Highway Elon, NC 27244 2848 Old NC 87 Highway drinking irrigation 165 -65 520 northeast Down WSW-14 Clarence Whitt-owner/user 3232 Osceola Road Elon, NC 27244 3232 Osceola Road drinking 85 --440 west northwest Up WSW-15 Henry and Doris Simpson-owner Kevin Maxwell (2918) and Melonie Sarlette (2916)-users 3137 Sutton Place Burlington, NC 27215 2918 Old NC 87 Highway (2916 Old NC 87 Highway- shared well) drinking ---840 northeast Down WSW-16 Gary Morton-owner/user P.O. Box 43 Altamahaw, NC 27202 3255 Osceola Road drinking ---640 west northwest Up WSW-17 Alvin Cook-owner/user 3311 Osceola Road Elon, NC 27244 3311 Osceola Road drinking ---940 west northwest Up WSW-18 Dwight and Denise Lowes-owner/user 3303 Osceola Road Elon, NC 27244 3303 Osceola Road drinking ---870 west northwest Up WSW-19 Marvin and Janice Brantley-owner/user 3328 Osceola Road Elon, NC 27244 3238 Osceola Road drinking 260 --540 west northwest Up WSW-20 Jimmie and Belinda McCoy-owner/ Jimmie and Tonya McCoy-user 756 D E. Big Spring Road Lansing, NC 28643 2745 Old NC 87 Highway drinking ---760 south southeast Down WSW-21 Fairview United Methodist Church owner/user (church building) 3128 Osceola Road Elon, NC 27244 3128 Osceola Road drinking ---440 east southeast Down WSW-22 James and Renee Nisewonder-owner/user 2711 Laundry Road Elon, NC 27244 2711 Laundry Road drinking ---900 south southeast Down WSW-23 James and Jo Ann Barbour-owner user-rental property 3324 Osceola Road Elon, NC 27244 3246 Osceola Road Irrigation ---650 west northwest Up WSW-24 Jimmie and Belinda McCoy-owner user- rental property 756 D E. Big Spring Road Lansing, NC 28643 2718 Laundry Road Unknown ---Unknown -Down WSW-25 Robert and Mary Hensley-owner/user 3239 Osceola Road Elon, NC 27244 3239 Osceola Road drinking ---520 west northwest Up WSW-26 Dawn Troxler-owner/no user 3405 Garden Road, Burlington, NC 27215 3224 Osceola Road Residence vacant 200 --350 west southwest Up WSW-27 Chadwick Williams-owner/user 2733 Old NC 87 Highway Elon, NC 27244 2733 Old NC 87 Highway drinking ---870 south southwest Down Other Receptors (Other public water supplies, reservoirs, supply lines, surface water bodies, wellhead protection areas, recharge areas for deep aquifers, subsurface structures) Receptor ID Description Location Latitude (decimal) Phone Number Distance (ft) / Direction from Source Gradient from Source (Up or Down)-Reedy Fork (surface water body)----1,010 South Down Usage - ATC Project No. SLC1074004 NCDEQ State Lead Program APPENDIX B FIELD NOTES ATC Project No. SLC1074004 NCDEQ State Lead Program APPENDIX C SITE PHOTOGRAPHS Site, facing east. Photograph Taken: 3/28/2023 MW-2, facing northeast. Photograph Taken: 3/28/2023 Site Photographs Hub Center Service Station 2805 Old NC Highway 87 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina (919) 871-0999 FAX (737) 207-8261 Photograph Taken By: Chris Hanley Incident # 10740 ATC Project No.: SLC1074004 MW-2 MW-2 and WSW-4 during sampling event. Photograph Taken: 3/28/2023 Site Photographs Hub Center Service Station 2805 Old NC Highway 87 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina (919) 871-0999 FAX (737) 207-8261 Photograph Taken By: Chris Hanley Incident # 10740 ATC Project No.: SLC1074004 MW-2 WSW-4 Sample Spigot WSW-4 ATC Project No. SLC1074004 NCDEQ State Lead Program APPENDIX D LABORATORY ANALYTICAL RESULTS 04/07/23 Technical Report for Atlas Hub Service Center SGS Job Number: LA89170 Sampling Date: 03/28/23 Report to: ATC Group Services LLC. 2725 East Millbrook Road Suite 121 Raleigh, NC 27604 ashley.winkelman@oneatlas.com ATTN: Ashley Winkelman Total number of pages in report: Certifications: LDEQ(2048), LDHH(LA150012), AR(14-045-04), AZ(AZ0805), FL(E87657), IL(200082), KY(#31), NC(487), SC(73004001), NJ(LA007), TX(T104704186-18-16), WV(257) This report shall not be reproduced, except in its entirety, without the written approval of SGS. Test results relate only to samples analyzed. SGS North America Inc. • 500 Ambassador Caffery • Scott, LA 70583 • tel: 337-237-4775 Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Program and/or state specific certification programs as applicable. Client Service contact: Rebecca Hebert 337-237-4775 Kesavalu Bagawandoss General Manager Scott, LA 04/07/23 e-Hardcopy 2.0 Automated Report 48 SGS is the sole authority for authorizing edits or modifications to this document. Unauthorized modification of this report is strictly prohibited. Review standard terms at: http://www.sgs.com/en/terms-and-conditions The results set forth herein are provided by SGS North America Inc. Please share your ideas about how we can serve you better at: EHS.US.CustomerCare@sgs.com 1 of 48 LA89170 Table of Contents -1- Sections: Section 1: Sample Summary ...................................................................................................3 Section 2: Summary of Hits ....................................................................................................4 Section 3: Sample Results ........................................................................................................5 3.1: LA89170-1: MW-2 .......................................................................................................6 3.2: LA89170-2: FIELD BLANK ........................................................................................14 Section 4: Misc. Forms ............................................................................................................17 4.1: Chain of Custody ...........................................................................................................18 Section 5: MS Volatiles - QC Data Summaries .....................................................................23 5.1: Method Blank Summary ................................................................................................24 5.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................27 5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................30 Section 6: MS Semi-volatiles - QC Data Summaries ............................................................33 6.1: Method Blank Summary ................................................................................................34 6.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................38 Section 7: GC Volatiles - QC Data Summaries .....................................................................42 7.1: Method Blank Summary ................................................................................................43 7.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................44 7.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................45 Section 8: GC/LC Semi-volatiles - QC Data Summaries .....................................................46 8.1: Method Blank Summary ................................................................................................47 8.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................48 123456782 of 48 LA89170 SGS North America Inc. Sample Summary Atlas Job No:LA89170 Hub Service Center Sample Collected Matrix Client Number Date Time By Received Code Type Sample ID This report contains results reported as ND = Not detected. The following applies: Organics ND = Not detected above the MDL LA89170-1 03/28/23 10:30 CH 03/30/23 AQ Ground Water MW-2 LA89170-2 03/28/23 10:40 CH 03/30/23 AQ Field Blank Water FIELD BLANK 3 of 48 LA891701 Summary of Hits Page 1 of 1 Job Number:LA89170 Account:Atlas Project:Hub Service Center Collected:03/28/23 Lab Sample ID Client Sample ID Result/ Analyte Qual RL MDL Units Method LA89170-1 MW-2 Naphthalene 0.95 0.50 0.10 ug/l SM 6200B bis(2-Ethylhexyl)phthalate 6.4 5.1 0.17 ug/l EPA 625.1 1-Methylnaphthalene 1.3 0.20 0.17 ug/l EPA 625.1 2-Methylnaphthalene 0.90 0.20 0.053 ug/l EPA 625.1 C9- C12 Aliphatics (Unadj.)644 100 50 ug/l MADEP VPH REV 2.1 C9- C10 Aromatics (Unadj.)164 100 20 ug/l MADEP VPH REV 2.1 C11-C22 Aromatics (Unadj.)1390 370 230 ug/l MADEP EPH REV 2.1 C9-C18 Aliphatics 13500 370 190 ug/l MADEP EPH REV 2.1 C19-C36 Aliphatics 462 370 80 ug/l MADEP EPH REV 2.1 LA89170-2 FIELD BLANK Acetone a 1.2 J 10 1.2 ug/l SM 6200B (a) Confirmed by reanalysis. 4 of 48 LA891702 SGS North America Inc. Sample Results Report of Analysis Scott, LA Section 3 5 of 48 LA891703 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:MW-2 Lab Sample ID:LA89170-1 Date Sampled:03/28/23 Matrix:AQ - Ground Water Date Received:03/30/23 Method:SM 6200B Percent Solids:n/a Project:Hub Service Center File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2K0145514.D 1 04/01/23 02:45 MB n/a n/a V2K4066 Run #2 Purge Volume Run #1 25.0 ml Run #2 VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 6 of 48 LA8917033.1 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:MW-2 Lab Sample ID:LA89170-1 Date Sampled:03/28/23 Matrix:AQ - Ground Water Date Received:03/30/23 Method:SM 6200B Percent Solids:n/a Project:Hub Service Center VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol a ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene 0.95 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 98%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 7 of 48 LA8917033.1 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:MW-2 Lab Sample ID:LA89170-1 Date Sampled:03/28/23 Matrix:AQ - Ground Water Date Received:03/30/23 Method:SM 6200B Percent Solids:n/a Project:Hub Service Center VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 102%70-130% 460-00-4 4-Bromofluorobenzene 117%70-130% (a) Associated CCV outside of control limits high, sample was ND. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 8 of 48 LA8917033.1 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:MW-2 Lab Sample ID:LA89170-1 Date Sampled:03/28/23 Matrix:AQ - Ground Water Date Received:03/30/23 Method:EPA 625.1 EPA 625.1 Percent Solids:n/a Project:Hub Service Center File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 P79668.D 1 04/05/23 20:58 BH 04/03/23 11:00 OP22504 EP3719 Run #2 W58017.D 1 04/06/23 12:47 BH 04/03/23 11:00 OP22504 EW2786 Initial Volume Final Volume Run #1 990 ml 1.0 ml Run #2 990 ml 1.0 ml ABN List for NC, May 2012 CAS No.Compound Result RL MDL Units Q 65-85-0 Benzoic Acid ND 20 2.0 ug/l 59-50-7 4-Chloro-3-methyl Phenol ND 5.1 0.13 ug/l 95-57-8 2-Chlorophenol ND 5.1 0.15 ug/l 120-83-2 2,4-Dichlorophenol ND 5.1 0.16 ug/l 105-67-9 2,4-Dimethylphenol ND 5.1 0.82 ug/l 51-28-5 2,4-Dinitrophenol a ND 20 0.76 ug/l 534-52-1 4,6-Dinitro-o-cresol ND 10 0.15 ug/l 95-48-7 2-Methylphenol ND 5.1 0.27 ug/l 3&4-Methylphenol ND 5.1 0.18 ug/l 88-75-5 2-Nitrophenol ND 5.1 0.23 ug/l 100-02-7 4-Nitrophenol ND 25 0.15 ug/l 87-86-5 Pentachlorophenol ND 10 0.23 ug/l 108-95-2 Phenol ND 5.1 0.15 ug/l 88-06-2 2,4,6-Trichlorophenol ND 5.1 0.23 ug/l 83-32-9 Acenaphthene ND 0.20 0.080 ug/l 208-96-8 Acenaphthylene ND 0.20 0.066 ug/l 120-12-7 Anthracene ND 0.20 0.088 ug/l 56-55-3 Benzo(a)anthracene ND 0.20 0.056 ug/l 50-32-8 Benzo(a)pyrene ND 0.20 0.056 ug/l 205-99-2 Benzo(b)fluoranthene ND 0.20 0.051 ug/l 191-24-2 Benzo(g,h,i)perylene ND 0.20 0.056 ug/l 207-08-9 Benzo(k)fluoranthene ND 0.20 0.049 ug/l 100-51-6 Benzyl Alcohol ND b 10 0.18 ug/l 101-55-3 4-Bromophenyl Phenyl Ether ND 5.1 0.13 ug/l 85-68-7 Butyl Benzyl Phthalate ND 5.1 0.13 ug/l 106-47-8 4-Chloroaniline ND 5.1 0.67 ug/l 111-91-1 bis(2-Chloroethoxy)methane ND 5.1 0.15 ug/l 111-44-4 bis(2-Chloroethyl)ether ND 5.1 0.18 ug/l 108-60-1 2,2'-Oxybis(1-chloropropane)ND 5.1 0.38 ug/l 91-58-7 2-Chloronaphthalene ND 5.1 0.14 ug/l 7005-72-3 4-Chlorophenyl Phenyl Ether ND 5.1 0.13 ug/l 218-01-9 Chrysene ND 0.20 0.066 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 9 of 48 LA8917033.1 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:MW-2 Lab Sample ID:LA89170-1 Date Sampled:03/28/23 Matrix:AQ - Ground Water Date Received:03/30/23 Method:EPA 625.1 EPA 625.1 Percent Solids:n/a Project:Hub Service Center ABN List for NC, May 2012 CAS No.Compound Result RL MDL Units Q 53-70-3 Dibenzo(a,h)anthracene ND 0.20 0.068 ug/l 132-64-9 Dibenzofuran ND 5.1 0.14 ug/l 95-50-1 1,2-Dichlorobenzene ND 5.1 0.15 ug/l 541-73-1 1,3-Dichlorobenzene ND 5.1 0.23 ug/l 106-46-7 1,4-Dichlorobenzene ND 5.1 0.18 ug/l 91-94-1 3,3'-Dichlorobenzidine ND 10 0.49 ug/l 84-66-2 Diethyl Phthalate ND 5.1 0.17 ug/l 131-11-3 Dimethyl Phthalate ND 5.1 0.11 ug/l 84-74-2 Di-n-butyl Phthalate ND 5.1 0.13 ug/l 117-84-0 Di-n-octyl Phthalate ND 5.1 0.13 ug/l 122-66-7 1,2-Diphenylhydrazine ND 5.1 0.17 ug/l 117-81-7 bis(2-Ethylhexyl)phthalate 6.4 5.1 0.17 ug/l 206-44-0 Fluoranthene ND 0.20 0.17 ug/l 86-73-7 Fluorene ND 0.20 0.075 ug/l 118-74-1 Hexachlorobenzene ND 5.1 0.18 ug/l 87-68-3 Hexachlorobutadiene ND 5.1 0.069 ug/l 77-47-4 Hexachlorocyclopentadiene ND 10 0.21 ug/l 67-72-1 Hexachloroethane ND 5.1 0.22 ug/l 193-39-5 Indeno(1,2,3-cd)pyrene ND 0.20 0.055 ug/l 78-59-1 Isophorone ND 5.1 0.14 ug/l 90-12-0 1-Methylnaphthalene 1.3 0.20 0.17 ug/l 91-57-6 2-Methylnaphthalene 0.90 0.20 0.053 ug/l 91-20-3 Naphthalene ND 0.20 0.071 ug/l 98-95-3 Nitrobenzene ND 5.1 0.13 ug/l 621-64-7 N-Nitroso-di-n-propylamine ND 5.1 0.14 ug/l 86-30-6 N-Nitrosodiphenylamine ND 5.1 0.69 ug/l 85-01-8 Phenanthrene ND 0.20 0.19 ug/l 129-00-0 Pyrene ND 0.20 0.17 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 5.1 0.15 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 367-12-4 2-Fluorophenol 37%37%20-75% 4165-62-2 Phenol-d5 26%25%10-60% 118-79-6 2,4,6-Tribromophenol 91%90%38-138% 4165-60-0 Nitrobenzene-d5 80%101%44-132% 321-60-8 2-Fluorobiphenyl 78%73%40-119% 1718-51-0 Terphenyl-d14 88%82%40-127% (a) Associated CCV outside of control limits high, sample was ND. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 10 of 48 LA8917033.1 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:MW-2 Lab Sample ID:LA89170-1 Date Sampled:03/28/23 Matrix:AQ - Ground Water Date Received:03/30/23 Method:EPA 625.1 EPA 625.1 Percent Solids:n/a Project:Hub Service Center ABN List for NC, May 2012 CAS No.Compound Result RL MDL Units Q (b) Result is from Run# 2 ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 11 of 48 LA8917033.1 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:MW-2 Lab Sample ID:LA89170-1 Date Sampled:03/28/23 Matrix:AQ - Ground Water Date Received:03/30/23 Method:MADEP VPH REV 2.1 Percent Solids:n/a Project:Hub Service Center File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 LE041062.D 1 04/04/23 01:19 JB n/a n/a GLE2404 Run #2 Purge Volume Run #1 5.0 ml Run #2 MA VPH list CAS No.Compound Result RL MDL Units Q C5- C8 Aliphatics (Unadj.)ND 100 50 ug/l C9- C12 Aliphatics (Unadj.)644 100 50 ug/l C9- C10 Aromatics (Unadj.)164 100 20 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 615-59-8 2,5-Dibromotoluene 146% a 70-130% 615-59-8 2,5-Dibromotoluene 110%70-130% (a) Outside control limits due to matrix interference. Confirmed by MS/MSD at a dilution. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 12 of 48 LA8917033.1 SGS North America Inc. Report of Analysis Page 1 of 1 Client Sample ID:MW-2 Lab Sample ID:LA89170-1 Date Sampled:03/28/23 Matrix:AQ - Ground Water Date Received:03/30/23 Method:MADEP EPH REV 2.1 SW846 3511 Percent Solids:n/a Project:Hub Service Center File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 LZ0022089.D 1 04/05/23 19:41 KM 04/04/23 07:30 OP22508 GLZ479 Run #2 Initial Volume Final Volume Run #1 53.8 ml 4.0 ml Run #2 MAEPH List CAS No.Compound Result RL MDL Units Q C11-C22 Aromatics (Unadj.)1390 370 230 ug/l C9-C18 Aliphatics 13500 370 190 ug/l C19-C36 Aliphatics 462 370 80 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 3386-33-2 1-Chlorooctadecane 87%40-140% 84-15-1 o-Terphenyl 93%40-140% 321-60-8 2-Fluorobiphenyl 80%40-140% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 13 of 48 LA8917033.1 SGS North America Inc. Report of Analysis Page 1 of 3 Client Sample ID:FIELD BLANK Lab Sample ID:LA89170-2 Date Sampled:03/28/23 Matrix:AQ - Field Blank Water Date Received:03/30/23 Method:SM 6200B Percent Solids:n/a Project:Hub Service Center File ID DF Analyzed By Prep Date Prep Batch Analytical Batch Run #1 2K0145504.D 1 03/31/23 22:07 MB n/a n/a V2K4066 Run #2 a 2K0145567.D 1 04/04/23 13:41 MB n/a n/a V2K4068 Purge Volume Run #1 25.0 ml Run #2 25.0 ml VOA Special List CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone b 1.2 10 1.2 ug/l J 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 14 of 48 LA8917033.2 SGS North America Inc. Report of Analysis Page 2 of 3 Client Sample ID:FIELD BLANK Lab Sample ID:LA89170-2 Date Sampled:03/28/23 Matrix:AQ - Field Blank Water Date Received:03/30/23 Method:SM 6200B Percent Solids:n/a Project:Hub Service Center VOA Special List CAS No.Compound Result RL MDL Units Q 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol c ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 17060-07-0 1,2-Dichloroethane-D4 99%97%70-130% ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 15 of 48 LA8917033.2 SGS North America Inc. Report of Analysis Page 3 of 3 Client Sample ID:FIELD BLANK Lab Sample ID:LA89170-2 Date Sampled:03/28/23 Matrix:AQ - Field Blank Water Date Received:03/30/23 Method:SM 6200B Percent Solids:n/a Project:Hub Service Center VOA Special List CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits 2037-26-5 Toluene-D8 103%102%70-130% 460-00-4 4-Bromofluorobenzene 104%98%70-130% (a) Confirmation run. (b) Confirmed by reanalysis. (c) Associated CCV outside of control limits high, sample was ND. ND = Not detected MDL = Method Detection Limit J = Indicates an estimated value RL = Reporting Limit B = Indicates analyte found in associated method blank E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound 16 of 48 LA8917033.2 SGS North America Inc. Misc. Forms Custody Documents and Other Forms Includes the following where applicable: • Chain of Custody Scott, LA Section 4 17 of 48 LA891704 CHAIN OF CUSTODY PAGE OF \ Reou*ted AnrlY.la { roo TE:ST CODE sh66t)Malr x CodesProlect htqlarl{olClhnt, Bopor ng lnfgltllatlo!"'*$l,tg Ce^[o 9ru !164:oa, a-r-95 a t ;a,[-<'+*rL A Bllllno lntofidrlon I ll dLfierent from R.ponlo)ArwI\:L4-7fta l.) <.-'hr^274!'{tul ,,ltu "f),'x*',l"q n1 or- o 3 g ol\\,N =S N\s \ \ -\q. LAB USE ONLY- ) n ) .1! x x x'xC,+A ir-^)tlGlzElo30thr,.r'L( x 2lOt o /HGz*O.ttL Llo, /. (nof, Noter Saople inventory is verified upon receipt in th z-. )o I1 5 :5'\ (ltt 1) I rac) Oala Oei verable lntomalion Co @rcial'C"= R6sulls + OC must b. documontsd b€low oach tlm€ sam 2 E EDD Fom.r 1 E conm.Er.r "a' {Ld.r r) E connorcr.r"B-( LMr 2) -l RECAP fl Fullri (tffir3+.) E $.r. Fom3 E REDrl (Ld.r3+t) D conm.ri.r'c' Cl)i1@.cirl'A. = R6ulG OnlY Commr@l'6': Raulll + OC Summry n$.nd.rd lO Bullnod D.Yt E 5 BGh6r D.r. RU3[ E .6usln@ o.yr RU3H E 3 Bu.h.s. D!y. RU3H ! 2 aBh6! D.Y. Rugtl n I aBlnB. DsYE ERGENCY 4 5 Copy or EHSA-OAC_OO2€-aGFOFM_S.oU _ Standsrd COC-FINAL trNdnld Daed htlpr//www.sgs.com/en/lerms-and-condllions SGS North Am6.ica lnc. - Scott 500 Ambassador Caflory Park\day, Scotl, LA 70583 rEL.337 237.4175 FAX: 337.237 7838 /\ I 6a33 Field lD / Point of collection ll IIjl) I I II I I I I I I I IIII IIII-I IIII I I IIIllI I Ir-I II;---7-, 31 LA89170: Chain of Custody Page 1 of 5 18 of 48 LA8917044.1 SGS NORTH AMERICA INC. LABORATORIES CHAIN OF CUSTODY INSTRUCTIONSnter the company name, address, phone number, and person designated to receive the analytical report. Sampler's full name(s) and phone number neec,sbe entered in case the laboratory discovers a sampling anomaly and needs to make a call. The name(s) will corresponcl with samplar's initials listed in thellection section under sampled by.ill inallthe requested information that js available. This information is critical to matching up specific project and billing information in our LIMS to thejobon the chain. The state of origin must be filled in to ensure thai our repo(ing format meets the requirements of that specific state and to ensure that wecertlfications tor that state.istedLEARLY, w.ite in the sample lO, dates, times and samplers initials. All information must be legible. lJse one line per sample point unless the sample wasat mulliple tim€s for different lests. ln such a case use a separate line for the botlles taken al dilferent tirnes. Enter th6 date, and time of each samplelease note AM and PM or use Milatary time Check this informataon andthe Field lDs against the information recorded onthe bottles. Make surc allnformation matches exactlydatdatiomatritedrightdthaiDWDtikngalerGW.GndateSWSo-SoilsLSIdgSD-SedoloLtQ-othLiqudSOLorhSolidrpeRBeldBlaRBRinsBBEquipaTBTptslaththEntehetotalbottleshplethedrgdistthberofbottlrytvpetheL]soItddPreservaiioheflblakdbefilledfastedativhelastpagethhincustodvcontaansStthnlestsperformedtfthhetheSGSvqpTcoDEditlabedReqstdIysistfthealysotbethpletatelysieadypoibthbyprovidnglhythanddngislappbleXtheboatwithanxsthplestdhechaalysHoLDdnotpUtXhlumthattest,HndhentsctiHHOLDyoubitvtactthlabactivavtlesplacedHoLDdVidatahrst-tieisSaplacedHOLngyspDvbehdfo30dYSafiereportpetiolhe quole.number is known, please wdte the quote number in this field. The bottle order control number is tisted onthe botte order form, which waselivered with the coolols. Please write in the number from this form in this ftetdPlease do !q! write in these fietdsUtxthetotheddtiTdtllculatedingbudaMItiignateSYSptimclerlyhdpecifiplesndtestsUlhSIspeciahIaUthalysthtustedhpleswilalstadardturntimeXthhardcopyreportpackastvpetha1redCoMMAItlyCOMMBNJREDr2(ResItsoCmariespartdata(ResItsoCSumdrawdataNASPRtslv)NASPBdta)CLP(ResuResultsOCSdalIts,OCSdatardgtoCLstatementDeiverablestlectedaljoluretodeliveabtypetdgnateItloganalysisanddshftsample-transfers must be signed and dated by the person relinquishing the samples and the person receiving the samptes. Missing signatures andstodv informalion could invalidate all work donl on tne ;oo Fill i; the c;tody aei number in the section desijnatea at itr! uonom of the chain.flhere are any spocjal instructions, write them in this jieldlf the metals samples are to be tab flltered, document this in the comment section. Metatsples submifted for lab filtration must be unpreservedthasstodvwriteinleft-h22thh2fohpagesubmttedThtoindicaterypalp(JlobassrgofJobdmprschaicustodvisegantlyblbtiteoutentdtape.TaneithglethroughthrrectinforrnationdheinformalioDteanditiaastnkeoutsthehCopy of EHSA-OAC-0026-OO-FORM-SCoII _ Standard COC_F|NAL (i)Rev. Datei 4/10/18FULLTl(Results and QC summaries),data package.LA89170: Chain of Custody Page 2 of 5 19 of 48 LA8917044.1 To SllvtPtit "vL: vr-inr- '--SGS SC0TT L'1 t-Eil(rlr rrOBY109 COMMISSION BLVDI.AFAYETTE LA 70508l8ltll 87 - tn,IREF: HIJB CENTERlll llllllllllllllllllillll llil flr[ il 1]il1ilil ll itililil |il ltFedExExpraarTHU - 30 MAR 10PRIORITY Ot,ERNI.,- |--#szoz9ob1 ogbg:30AGHTr. ..T,XH-EF+A.... ' -,-:ililriltilt/ill{}E\_+:|- '70508LA-rj8 LFTLA89170: Chain of Custody Page 3 of 5 20 of 48 LA8917044.1 Job Number:LA89170 Client:ATC Date / Time Received:3/30/2023 9:45:00 AM Delivery Method:FEDEX EXPRESS Project:HUB CENTER SERVICE STATION 4. No. Coolers:1 Airbill #'s: Cooler Security 1. Custody Seals Present: Y or N 2. Custody Seals Intact: 3. COC Present: 4. Smpl Dates/Time OK 2. Thermometer ID: Cooler Temperature Y or N 1. Temp criteria achieved: 3. Cooler media: IR002; Ice (direct contact) Quality Control Preservation Y or N N/A 1. Trip Blank present / cooler: 2. Trip Blank listed on COC: 3. Samples preserved properly: 4. VOCs headspace free: Sample Integrity - Documentation Y or N 1. Sample labels present on bottles: 2. Container labeling complete: 3. Sample container label / COC agree: Sample Integrity - Condition Y or N 1. Sample recvd within HT: 3. Condition of sample: 2. All containers accounted for: Sample Integrity - Instructions 1. Analysis requested is clear: 2. Bottles received for unspecified tests 3. Sufficient volume recvd for analysis: 4. Compositing instructions clear: 5. Filtering instructions clear: Intact Y or N Comments Y or N N/A Cooler Temps (Initial/Adjusted):#1: (3/2.8); SGS Sample Receipt Summary LA89170: Chain of Custody Page 4 of 5 21 of 48 LA8917044.1 Page 2 of 2 Problem Resolution CSR:Response Date: Response: Job Number:LA89170 LA89170: Chain of Custody Page 5 of 5 22 of 48 LA8917044.1 SGS North America Inc. MS Volatiles QC Data Summaries Includes the following where applicable: • Method Blank Summaries • Blank Spike Summaries • Matrix Spike and Duplicate Summaries Scott, LA Section 5 23 of 48 LA891705 Method Blank Summary Page 1 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V2K4066-MB1 2K0145503.D 1 03/31/23 MB n/a n/a V2K4066 The QC reported here applies to the following samples:Method: SM 6200B LA89170-1, LA89170-2 CAS No.Compound Result RL MDL Units Q 67-64-1 Acetone ND 10 1.2 ug/l 71-43-2 Benzene ND 0.50 0.27 ug/l 108-86-1 Bromobenzene ND 0.50 0.18 ug/l 74-97-5 Bromochloromethane ND 0.50 0.12 ug/l 75-27-4 Bromodichloromethane ND 0.50 0.18 ug/l 75-25-2 Bromoform ND 0.50 0.10 ug/l 104-51-8 n-Butylbenzene ND 0.50 0.092 ug/l 135-98-8 sec-Butylbenzene ND 0.50 0.14 ug/l 98-06-6 tert-Butylbenzene ND 0.50 0.16 ug/l 56-23-5 Carbon Tetrachloride ND 0.20 0.092 ug/l 108-90-7 Chlorobenzene ND 0.50 0.16 ug/l 75-00-3 Chloroethane ND 0.50 0.055 ug/l 67-66-3 Chloroform ND 0.50 0.094 ug/l 95-49-8 o-Chlorotoluene ND 0.50 0.16 ug/l 106-43-4 p-Chlorotoluene ND 0.50 0.20 ug/l 124-48-1 Dibromochloromethane ND 0.20 0.075 ug/l 96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 0.13 ug/l 106-93-4 1,2-Dibromoethane ND 0.50 0.24 ug/l 75-71-8 Dichlorodifluoromethane ND 0.50 0.12 ug/l 541-73-1 m-Dichlorobenzene ND 0.50 0.063 ug/l 95-50-1 o-Dichlorobenzene ND 0.50 0.20 ug/l 106-46-7 p-Dichlorobenzene ND 0.50 0.22 ug/l 75-34-3 1,1-Dichloroethane ND 0.50 0.10 ug/l 107-06-2 1,2-Dichloroethane ND 0.20 0.12 ug/l 75-35-4 1,1-Dichloroethylene ND 0.50 0.094 ug/l 156-59-2 cis-1,2-Dichloroethylene ND 0.50 0.11 ug/l 156-60-5 trans-1,2-Dichloroethylene ND 0.50 0.15 ug/l 78-87-5 1,2-Dichloropropane ND 0.30 0.13 ug/l 142-28-9 1,3-Dichloropropane ND 0.50 0.21 ug/l 594-20-7 2,2-Dichloropropane ND 0.50 0.079 ug/l 563-58-6 1,1-Dichloropropene ND 0.50 0.12 ug/l 10061-01-5 cis-1,3-Dichloropropene ND 0.20 0.10 ug/l 10061-02-6 trans-1,3-Dichloropropene ND 0.20 0.056 ug/l 108-20-3 Di-Isopropyl Ether ND 0.50 0.073 ug/l 64-17-5 Ethyl Alcohol ND 50 8.4 ug/l 100-41-4 Ethylbenzene ND 0.50 0.20 ug/l 24 of 48 LA8917055.1.1 Method Blank Summary Page 2 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V2K4066-MB1 2K0145503.D 1 03/31/23 MB n/a n/a V2K4066 The QC reported here applies to the following samples:Method: SM 6200B LA89170-1, LA89170-2 CAS No.Compound Result RL MDL Units Q 591-78-6 2-Hexanone ND 1.0 0.42 ug/l 87-68-3 Hexachlorobutadiene ND 0.20 0.11 ug/l 98-82-8 Isopropylbenzene ND 0.50 0.13 ug/l 99-87-6 p-Isopropyltoluene ND 0.50 0.13 ug/l 74-83-9 Methyl Bromide ND 0.50 0.23 ug/l 74-87-3 Methyl Chloride ND 0.50 0.066 ug/l 74-95-3 Methylene Bromide ND 0.50 0.11 ug/l 75-09-2 Methylene Chloride ND 0.50 0.080 ug/l 78-93-3 Methyl Ethyl Ketone ND 25 0.28 ug/l 108-10-1 4-Methyl-2-pentanone ND 0.50 0.24 ug/l 1634-04-4 Methyl Tert Butyl Ether ND 0.50 0.068 ug/l 91-20-3 Naphthalene ND 0.50 0.10 ug/l 103-65-1 n-Propylbenzene ND 0.50 0.22 ug/l 100-42-5 Styrene ND 0.50 0.13 ug/l 630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 0.18 ug/l 79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 0.12 ug/l 127-18-4 Tetrachloroethylene ND 0.50 0.22 ug/l 108-88-3 Toluene ND 0.50 0.29 ug/l 87-61-6 1,2,3-Trichlorobenzene ND 0.50 0.16 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 0.50 0.17 ug/l 71-55-6 1,1,1-Trichloroethane ND 0.50 0.16 ug/l 79-00-5 1,1,2-Trichloroethane ND 0.30 0.17 ug/l 79-01-6 Trichloroethylene ND 0.50 0.18 ug/l 75-69-4 Trichlorofluoromethane ND 0.50 0.073 ug/l 96-18-4 1,2,3-Trichloropropane ND 0.50 0.023 ug/l 95-63-6 1,2,4-Trimethylbenzene ND 0.50 0.15 ug/l 108-67-8 1,3,5-Trimethylbenzene ND 0.50 0.16 ug/l 108-05-4 Vinyl Acetate ND 0.50 0.069 ug/l 75-01-4 Vinyl Chloride ND 0.10 0.075 ug/l m,p-Xylene ND 1.0 0.34 ug/l 95-47-6 o-Xylene ND 0.50 0.15 ug/l 1330-20-7 Xylene (total)ND 0.50 0.16 ug/l 25 of 48 LA8917055.1.1 Method Blank Summary Page 3 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V2K4066-MB1 2K0145503.D 1 03/31/23 MB n/a n/a V2K4066 The QC reported here applies to the following samples:Method: SM 6200B LA89170-1, LA89170-2 CAS No.Surrogate Recoveries Limits 17060-07-0 1,2-Dichloroethane-D4 101%70-130% 2037-26-5 Toluene-D8 104%70-130% 460-00-4 4-Bromofluorobenzene 105%70-130% 26 of 48 LA8917055.1.1 Blank Spike/Blank Spike Duplicate Summary Page 1 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V2K4066-BS1 2K0145500.D 1 03/31/23 MB n/a n/a V2K4066 V2K4066-BSD1 2K0145501.D 1 03/31/23 MB n/a n/a V2K4066 The QC reported here applies to the following samples:Method: SM 6200B LA89170-1, LA89170-2 Spike BSP BSP BSD BSD Limits CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD 67-64-1 Acetone 50 48.1 96 36.0 72 29 70-130/30 71-43-2 Benzene 20 17.1 86 16.6 83 3 70-130/30 108-86-1 Bromobenzene 20 16.8 84 17.1 86 2 70-130/30 74-97-5 Bromochloromethane 20 19.4 97 17.9 90 8 70-130/30 75-27-4 Bromodichloromethane 20 21.1 106 20.6 103 2 70-130/30 75-25-2 Bromoform 20 19.7 99 19.3 97 2 70-130/30 104-51-8 n-Butylbenzene 20 18.3 92 17.8 89 3 70-130/30 135-98-8 sec-Butylbenzene 20 17.5 88 17.2 86 2 70-130/30 98-06-6 tert-Butylbenzene 20 17.2 86 17.1 86 1 70-130/30 56-23-5 Carbon Tetrachloride 20 20.4 102 19.3 97 6 70-130/30 108-90-7 Chlorobenzene 20 17.3 87 17.2 86 1 70-130/30 75-00-3 Chloroethane 20 18.0 90 16.4 82 9 60-140/30 67-66-3 Chloroform 20 17.9 90 17.1 86 5 70-130/30 95-49-8 o-Chlorotoluene 20 17.1 86 16.8 84 2 70-130/30 106-43-4 p-Chlorotoluene 20 17.9 90 17.8 89 1 70-130/30 124-48-1 Dibromochloromethane 20 18.9 95 18.4 92 3 70-130/30 96-12-8 1,2-Dibromo-3-chloropropane 20 17.9 90 17.6 88 2 70-130/30 106-93-4 1,2-Dibromoethane 20 19.8 99 19.6 98 1 70-130/30 75-71-8 Dichlorodifluoromethane 20 19.3 97 16.7 84 14 60-140/30 541-73-1 m-Dichlorobenzene 20 16.7 84 16.7 84 0 70-130/30 95-50-1 o-Dichlorobenzene 20 17.4 87 17.5 88 1 70-130/30 106-46-7 p-Dichlorobenzene 20 17.6 88 17.4 87 1 70-130/30 75-34-3 1,1-Dichloroethane 20 18.1 91 17.3 87 5 70-130/30 107-06-2 1,2-Dichloroethane 20 17.8 89 17.4 87 2 70-130/30 75-35-4 1,1-Dichloroethylene 20 18.1 91 17.6 88 3 70-130/30 156-59-2 cis-1,2-Dichloroethylene 20 17.8 89 17.2 86 3 70-130/30 156-60-5 trans-1,2-Dichloroethylene 20 18.0 90 17.1 86 5 70-130/30 78-87-5 1,2-Dichloropropane 20 18.0 90 17.5 88 3 70-130/30 142-28-9 1,3-Dichloropropane 20 18.3 92 18.0 90 2 70-130/30 594-20-7 2,2-Dichloropropane 20 20.4 102 19.6 98 4 70-130/30 563-58-6 1,1-Dichloropropene 20 18.2 91 17.3 87 5 70-130/30 10061-01-5 cis-1,3-Dichloropropene 20 21.8 109 20.9 105 4 70-130/30 10061-02-6 trans-1,3-Dichloropropene 20 22.1 111 21.7 109 2 70-130/30 108-20-3 Di-Isopropyl Ether 20 19.5 98 18.5 93 5 70-130/30 64-17-5 Ethyl Alcohol 400 441 110 355 89 22 70-130/30 100-41-4 Ethylbenzene 20 17.0 85 17.0 85 0 70-130/30 * = Outside of Control Limits. 27 of 48 LA8917055.2.1 Blank Spike/Blank Spike Duplicate Summary Page 2 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V2K4066-BS1 2K0145500.D 1 03/31/23 MB n/a n/a V2K4066 V2K4066-BSD1 2K0145501.D 1 03/31/23 MB n/a n/a V2K4066 The QC reported here applies to the following samples:Method: SM 6200B LA89170-1, LA89170-2 Spike BSP BSP BSD BSD Limits CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD 591-78-6 2-Hexanone 50 47.4 95 45.1 90 5 70-130/30 87-68-3 Hexachlorobutadiene 20 18.4 92 17.4 87 6 70-130/30 98-82-8 Isopropylbenzene 20 17.3 87 17.3 87 0 70-130/30 99-87-6 p-Isopropyltoluene 20 17.9 90 17.4 87 3 70-130/30 74-83-9 Methyl Bromide 20 17.6 88 17.0 85 3 60-140/30 74-87-3 Methyl Chloride 20 17.7 89 16.3 82 8 60-140/30 74-95-3 Methylene Bromide 20 19.6 98 18.9 95 4 70-130/30 75-09-2 Methylene Chloride 20 18.6 93 17.3 87 7 70-130/30 78-93-3 Methyl Ethyl Ketone 50 46.0 92 42.9 86 7 70-130/30 108-10-1 4-Methyl-2-pentanone 50 52.2 104 50.0 100 4 70-130/30 1634-04-4 Methyl Tert Butyl Ether 20 19.7 99 18.7 94 5 70-130/30 91-20-3 Naphthalene 20 20.9 105 20.3 102 3 70-130/30 103-65-1 n-Propylbenzene 20 17.5 88 17.2 86 2 70-130/30 100-42-5 Styrene 20 19.1 96 19.3 97 1 70-130/30 630-20-6 1,1,1,2-Tetrachloroethane 20 20.2 101 19.7 99 3 70-130/30 79-34-5 1,1,2,2-Tetrachloroethane 20 19.6 98 19.1 96 3 70-130/30 127-18-4 Tetrachloroethylene 20 17.1 86 17.1 86 0 70-130/30 108-88-3 Toluene 20 17.1 86 17.0 85 1 70-130/30 87-61-6 1,2,3-Trichlorobenzene 20 19.1 96 18.1 91 5 70-130/30 120-82-1 1,2,4-Trichlorobenzene 20 19.8 99 18.8 94 5 70-130/30 71-55-6 1,1,1-Trichloroethane 20 19.5 98 18.6 93 5 70-130/30 79-00-5 1,1,2-Trichloroethane 20 18.1 91 17.6 88 3 70-130/30 79-01-6 Trichloroethylene 20 18.9 95 18.4 92 3 70-130/30 75-69-4 Trichlorofluoromethane 20 18.4 92 17.0 85 8 60-140/30 96-18-4 1,2,3-Trichloropropane 20 18.3 92 18.2 91 1 70-130/30 95-63-6 1,2,4-Trimethylbenzene 20 17.5 88 17.3 87 1 70-130/30 108-67-8 1,3,5-Trimethylbenzene 20 18.0 90 17.9 90 1 70-130/30 108-05-4 Vinyl Acetate 20 22.1 111 21.1 106 5 70-130/30 75-01-4 Vinyl Chloride 20 17.4 87 15.9 80 9 60-140/30 m,p-Xylene 40 36.0 90 35.8 90 1 70-130/30 95-47-6 o-Xylene 20 17.4 87 17.5 88 1 70-130/30 1330-20-7 Xylene (total)60 53.4 89 53.3 89 0 70-130/30 * = Outside of Control Limits. 28 of 48 LA8917055.2.1 Blank Spike/Blank Spike Duplicate Summary Page 3 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch V2K4066-BS1 2K0145500.D 1 03/31/23 MB n/a n/a V2K4066 V2K4066-BSD1 2K0145501.D 1 03/31/23 MB n/a n/a V2K4066 The QC reported here applies to the following samples:Method: SM 6200B LA89170-1, LA89170-2 CAS No.Surrogate Recoveries BSP BSD Limits 17060-07-0 1,2-Dichloroethane-D4 105%101%70-130% 2037-26-5 Toluene-D8 101%102%70-130% 460-00-4 4-Bromofluorobenzene 99%101%70-130% * = Outside of Control Limits. 29 of 48 LA8917055.2.1 Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch LA89214-5MS 2K0145519.D 500 04/01/23 MB n/a n/a V2K4066 LA89214-5MSD 2K0145520.D 500 04/01/23 MB n/a n/a V2K4066 LA89214-5 2K0145516.D 100 04/01/23 MB n/a n/a V2K4066 The QC reported here applies to the following samples:Method: SM 6200B LA89170-1, LA89170-2 LA89214-5 Spike MS MS Spike MSD MSD Limits CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD 67-64-1 Acetone ND 25000 22900 92 25000 23200 93 1 70-130/20 71-43-2 Benzene 7240 10000 16800 167* a 10000 16500 164* a 2 70-130/20 108-86-1 Bromobenzene ND 10000 9020 90 10000 8860 89 2 70-130/20 74-97-5 Bromochloromethane ND 10000 10100 101 10000 10100 101 0 70-130/20 75-27-4 Bromodichloromethane ND 10000 11100 111 10000 10800 108 3 70-130/20 75-25-2 Bromoform ND 10000 9540 95 10000 9780 98 2 70-130/20 104-51-8 n-Butylbenzene ND 10000 9720 97 10000 9640 96 1 70-130/20 135-98-8 sec-Butylbenzene ND 10000 9370 94 10000 9260 93 1 70-130/20 98-06-6 tert-Butylbenzene ND 10000 9280 93 10000 9170 92 1 70-130/20 56-23-5 Carbon Tetrachloride ND 10000 10800 108 10000 10700 107 1 70-130/20 108-90-7 Chlorobenzene ND 10000 9310 93 10000 9130 91 2 70-130/20 75-00-3 Chloroethane ND 10000 9800 98 10000 9430 94 4 60-140/20 67-66-3 Chloroform ND 10000 9270 93 10000 8990 90 3 70-130/20 95-49-8 o-Chlorotoluene ND 10000 9000 90 10000 9010 90 0 70-130/20 106-43-4 p-Chlorotoluene ND 10000 9450 95 10000 9390 94 1 70-130/20 124-48-1 Dibromochloromethane ND 10000 9640 96 10000 9750 98 1 70-130/20 96-12-8 1,2-Dibromo-3-chloropropane ND 10000 9260 93 10000 9340 93 1 70-130/20 106-93-4 1,2-Dibromoethane ND 10000 10300 103 10000 10400 104 1 70-130/20 75-71-8 Dichlorodifluoromethane ND 10000 10300 103 10000 9900 99 4 60-140/20 541-73-1 m-Dichlorobenzene ND 10000 8820 88 10000 8680 87 2 70-130/20 95-50-1 o-Dichlorobenzene ND 10000 9130 91 10000 9130 91 0 70-130/20 106-46-7 p-Dichlorobenzene ND 10000 9130 91 10000 9080 91 1 70-130/20 75-34-3 1,1-Dichloroethane ND 10000 9570 96 10000 9410 94 2 70-130/20 107-06-2 1,2-Dichloroethane ND 10000 9480 95 10000 9310 93 2 70-130/20 75-35-4 1,1-Dichloroethylene ND 10000 9770 98 10000 9690 97 1 70-130/20 156-59-2 cis-1,2-Dichloroethylene ND 10000 9420 94 10000 9290 93 1 70-130/20 156-60-5 trans-1,2-Dichloroethylene ND 10000 9380 94 10000 9320 93 1 70-130/20 78-87-5 1,2-Dichloropropane ND 10000 9630 96 10000 9450 95 2 70-130/20 142-28-9 1,3-Dichloropropane ND 10000 9600 96 10000 9420 94 2 70-130/20 594-20-7 2,2-Dichloropropane ND 10000 9380 94 10000 9630 96 3 70-130/20 563-58-6 1,1-Dichloropropene ND 10000 9650 97 10000 9540 95 1 70-130/20 10061-01-5 cis-1,3-Dichloropropene ND 10000 11100 111 10000 11100 111 0 70-130/20 10061-02-6 trans-1,3-Dichloropropene ND 10000 11000 110 10000 11100 111 1 70-130/20 108-20-3 Di-Isopropyl Ether 766 10000 10900 109 10000 11000 110 1 70-130/20 64-17-5 Ethyl Alcohol ND 200000 261000 131* a 200000 247000 124 6 70-130/20 100-41-4 Ethylbenzene 882 10000 10200 102 10000 10000 100 2 70-130/20 * = Outside of Control Limits. 30 of 48 LA8917055.3.1 Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch LA89214-5MS 2K0145519.D 500 04/01/23 MB n/a n/a V2K4066 LA89214-5MSD 2K0145520.D 500 04/01/23 MB n/a n/a V2K4066 LA89214-5 2K0145516.D 100 04/01/23 MB n/a n/a V2K4066 The QC reported here applies to the following samples:Method: SM 6200B LA89170-1, LA89170-2 LA89214-5 Spike MS MS Spike MSD MSD Limits CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD 591-78-6 2-Hexanone ND 25000 24000 96 25000 24100 96 0 70-130/20 87-68-3 Hexachlorobutadiene ND 10000 9310 93 10000 9340 93 0 70-130/20 98-82-8 Isopropylbenzene 59.8 10000 9450 95 10000 9240 92 2 70-130/20 99-87-6 p-Isopropyltoluene ND 10000 9390 94 10000 9320 93 1 70-130/20 74-83-9 Methyl Bromide ND 10000 8150 82 10000 8770 88 7 60-140/20 74-87-3 Methyl Chloride ND 10000 9290 93 10000 8980 90 3 60-140/20 74-95-3 Methylene Bromide ND 10000 10100 101 10000 10000 100 1 70-130/20 75-09-2 Methylene Chloride ND 10000 9710 97 10000 9610 96 1 70-130/20 78-93-3 Methyl Ethyl Ketone ND 25000 24900 100 25000 24700 99 1 70-130/20 108-10-1 4-Methyl-2-pentanone ND 25000 27300 109 25000 27100 108 1 70-130/20 1634-04-4 Methyl Tert Butyl Ether 2560 10000 12800 128 10000 13000 130 2 70-130/20 91-20-3 Naphthalene 273 10000 11300 113 10000 11300 113 0 70-130/20 103-65-1 n-Propylbenzene 142 10000 9270 93 10000 9230 92 0 70-130/20 100-42-5 Styrene ND 10000 10400 104 10000 10200 102 2 70-130/20 630-20-6 1,1,1,2-Tetrachloroethane ND 10000 10500 105 10000 10700 107 2 70-130/20 79-34-5 1,1,2,2-Tetrachloroethane ND 10000 10000 100 10000 10200 102 2 70-130/20 127-18-4 Tetrachloroethylene ND 10000 8910 89 10000 8820 88 1 70-130/20 108-88-3 Toluene 200 10000 9580 94 10000 9340 92 3 70-130/20 87-61-6 1,2,3-Trichlorobenzene ND 10000 9980 100 10000 9670 97 3 70-130/20 120-82-1 1,2,4-Trichlorobenzene ND 10000 10200 102 10000 10100 101 1 70-130/20 71-55-6 1,1,1-Trichloroethane ND 10000 10400 104 10000 10400 104 0 70-130/20 79-00-5 1,1,2-Trichloroethane ND 10000 9670 97 10000 9520 95 2 70-130/20 79-01-6 Trichloroethylene ND 10000 10200 102 10000 9930 99 3 70-130/20 75-69-4 Trichlorofluoromethane ND 10000 10000 100 10000 9860 99 1 60-140/20 96-18-4 1,2,3-Trichloropropane ND 10000 9640 96 10000 9450 95 2 70-130/20 95-63-6 1,2,4-Trimethylbenzene 45.9 J 10000 9330 93 10000 9150 91 2 70-130/20 108-67-8 1,3,5-Trimethylbenzene 27.2 J 10000 9620 96 10000 9510 95 1 70-130/20 108-05-4 Vinyl Acetate ND 10000 10600 106 10000 10800 108 2 70-130/20 75-01-4 Vinyl Chloride ND 10000 9420 94 10000 9210 92 2 60-140/20 m,p-Xylene 353 20000 20000 99 20000 19700 98 2 70-130/20 95-47-6 o-Xylene 39.4 J 10000 9470 94 10000 9280 92 2 70-130/20 1330-20-7 Xylene (total)392 30000 29500 98 30000 28900 96 2 70-130/20 * = Outside of Control Limits. 31 of 48 LA8917055.3.1 Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch LA89214-5MS 2K0145519.D 500 04/01/23 MB n/a n/a V2K4066 LA89214-5MSD 2K0145520.D 500 04/01/23 MB n/a n/a V2K4066 LA89214-5 2K0145516.D 100 04/01/23 MB n/a n/a V2K4066 The QC reported here applies to the following samples:Method: SM 6200B LA89170-1, LA89170-2 CAS No.Surrogate Recoveries MS MSD LA89214-5 Limits 17060-07-0 1,2-Dichloroethane-D4 103%103%100%70-130% 2037-26-5 Toluene-D8 101%101%103%70-130% 460-00-4 4-Bromofluorobenzene 100%100%107%70-130% (a) Outside control limits due to matrix interference. Blank Spike meets acceptance criteria. * = Outside of Control Limits. 32 of 48 LA8917055.3.1 SGS North America Inc. MS Semi-volatiles QC Data Summaries Includes the following where applicable: • Method Blank Summaries • Blank Spike Summaries • Matrix Spike and Duplicate Summaries Scott, LA Section 6 33 of 48 LA891706 Method Blank Summary Page 1 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22504-MB P79662.D 1 04/05/23 BH 04/03/23 OP22504 EP3719 The QC reported here applies to the following samples:Method: EPA 625.1 LA89170-1 CAS No.Compound Result RL MDL Units Q 65-85-0 Benzoic Acid ND 20 2.0 ug/l 59-50-7 4-Chloro-3-methyl Phenol ND 5.0 0.13 ug/l 95-57-8 2-Chlorophenol ND 5.0 0.15 ug/l 120-83-2 2,4-Dichlorophenol ND 5.0 0.16 ug/l 105-67-9 2,4-Dimethylphenol ND 5.0 0.81 ug/l 51-28-5 2,4-Dinitrophenol ND 20 0.76 ug/l 534-52-1 4,6-Dinitro-o-cresol ND 10 0.14 ug/l 95-48-7 2-Methylphenol ND 5.0 0.27 ug/l 3&4-Methylphenol ND 5.0 0.18 ug/l 88-75-5 2-Nitrophenol ND 5.0 0.22 ug/l 100-02-7 4-Nitrophenol ND 25 0.15 ug/l 87-86-5 Pentachlorophenol ND 10 0.23 ug/l 108-95-2 Phenol ND 5.0 0.14 ug/l 88-06-2 2,4,6-Trichlorophenol ND 5.0 0.23 ug/l 83-32-9 Acenaphthene ND 0.20 0.079 ug/l 208-96-8 Acenaphthylene ND 0.20 0.065 ug/l 120-12-7 Anthracene ND 0.20 0.087 ug/l 56-55-3 Benzo(a)anthracene ND 0.20 0.056 ug/l 50-32-8 Benzo(a)pyrene ND 0.20 0.055 ug/l 205-99-2 Benzo(b)fluoranthene ND 0.20 0.051 ug/l 191-24-2 Benzo(g,h,i)perylene ND 0.20 0.056 ug/l 207-08-9 Benzo(k)fluoranthene ND 0.20 0.049 ug/l 101-55-3 4-Bromophenyl Phenyl Ether ND 5.0 0.13 ug/l 85-68-7 Butyl Benzyl Phthalate ND 5.0 0.13 ug/l 106-47-8 4-Chloroaniline ND 5.0 0.67 ug/l 111-91-1 bis(2-Chloroethoxy)methane ND 5.0 0.15 ug/l 111-44-4 bis(2-Chloroethyl)ether ND 5.0 0.18 ug/l 108-60-1 2,2'-Oxybis(1-chloropropane)ND 5.0 0.38 ug/l 91-58-7 2-Chloronaphthalene ND 5.0 0.14 ug/l 7005-72-3 4-Chlorophenyl Phenyl Ether ND 5.0 0.12 ug/l 218-01-9 Chrysene ND 0.20 0.066 ug/l 53-70-3 Dibenzo(a,h)anthracene ND 0.20 0.068 ug/l 132-64-9 Dibenzofuran ND 5.0 0.13 ug/l 95-50-1 1,2-Dichlorobenzene ND 5.0 0.15 ug/l 541-73-1 1,3-Dichlorobenzene ND 5.0 0.22 ug/l 106-46-7 1,4-Dichlorobenzene ND 5.0 0.18 ug/l 34 of 48 LA8917066.1.1 Method Blank Summary Page 2 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22504-MB P79662.D 1 04/05/23 BH 04/03/23 OP22504 EP3719 The QC reported here applies to the following samples:Method: EPA 625.1 LA89170-1 CAS No.Compound Result RL MDL Units Q 91-94-1 3,3'-Dichlorobenzidine ND 10 0.49 ug/l 84-66-2 Diethyl Phthalate ND 5.0 0.17 ug/l 131-11-3 Dimethyl Phthalate ND 5.0 0.11 ug/l 84-74-2 Di-n-butyl Phthalate ND 5.0 0.13 ug/l 117-84-0 Di-n-octyl Phthalate ND 5.0 0.13 ug/l 122-66-7 1,2-Diphenylhydrazine ND 5.0 0.17 ug/l 117-81-7 bis(2-Ethylhexyl)phthalate ND 5.0 0.17 ug/l 206-44-0 Fluoranthene ND 0.20 0.17 ug/l 86-73-7 Fluorene ND 0.20 0.075 ug/l 118-74-1 Hexachlorobenzene ND 5.0 0.18 ug/l 87-68-3 Hexachlorobutadiene ND 5.0 0.069 ug/l 77-47-4 Hexachlorocyclopentadiene ND 10 0.20 ug/l 67-72-1 Hexachloroethane ND 5.0 0.22 ug/l 193-39-5 Indeno(1,2,3-cd)pyrene ND 0.20 0.055 ug/l 78-59-1 Isophorone ND 5.0 0.14 ug/l 90-12-0 1-Methylnaphthalene ND 0.20 0.17 ug/l 91-57-6 2-Methylnaphthalene ND 0.20 0.053 ug/l 91-20-3 Naphthalene ND 0.20 0.071 ug/l 98-95-3 Nitrobenzene ND 5.0 0.13 ug/l 621-64-7 N-Nitroso-di-n-propylamine ND 5.0 0.14 ug/l 86-30-6 N-Nitrosodiphenylamine ND 5.0 0.68 ug/l 85-01-8 Phenanthrene ND 0.20 0.18 ug/l 129-00-0 Pyrene ND 0.20 0.17 ug/l 120-82-1 1,2,4-Trichlorobenzene ND 5.0 0.15 ug/l CAS No.Surrogate Recoveries Limits 367-12-4 2-Fluorophenol 44%20-75% 4165-62-2 Phenol-d5 28%10-60% 118-79-6 2,4,6-Tribromophenol 95%38-138% 4165-60-0 Nitrobenzene-d5 86%44-132% 321-60-8 2-Fluorobiphenyl 82%40-119% 1718-51-0 Terphenyl-d14 100%40-127% 35 of 48 LA8917066.1.1 Method Blank Summary Page 3 of 3 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22504-MB P79662.D 1 04/05/23 BH 04/03/23 OP22504 EP3719 The QC reported here applies to the following samples:Method: LA89170-1 CAS No.Tentatively Identified Compounds R.T.Est. Conc.Units Q 1576-87-0 Unknown 3.95 10 ug/l JN Total TIC, Semi-Volatile 10 ug/l J 36 of 48 LA8917066.1.1 Method Blank Summary Page 1 of 1 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22504-MB W58013.D 1 04/06/23 BH 04/03/23 OP22504 EW2786 The QC reported here applies to the following samples:Method: EPA 625.1 LA89170-1 CAS No.Compound Result RL MDL Units Q 100-51-6 Benzyl Alcohol ND 10 0.17 ug/l CAS No.Surrogate Recoveries Limits 367-12-4 2-Fluorophenol 42%20-75% 4165-62-2 Phenol-d5 28%10-60% 118-79-6 2,4,6-Tribromophenol 94%38-138% 4165-60-0 Nitrobenzene-d5 97%44-132% 321-60-8 2-Fluorobiphenyl 76%40-119% 1718-51-0 Terphenyl-d14 93%40-127% 37 of 48 LA8917066.1.2 Blank Spike/Blank Spike Duplicate Summary Page 1 of 2 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22504-BS1 P79663.D 1 04/05/23 BH 04/03/23 OP22504 EP3719 OP22504-BSD1 P79664.D 1 04/05/23 BH 04/03/23 OP22504 EP3719 The QC reported here applies to the following samples:Method: EPA 625.1 LA89170-1 Spike BSP BSP BSD BSD Limits CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD 65-85-0 Benzoic Acid 100 32.4 32 35.7 36 10 12-61/34 59-50-7 4-Chloro-3-methyl Phenol 50 43.5 87 46.5 93 7 66-103/19 95-57-8 2-Chlorophenol 50 37.5 75 39.5 79 5 63-93/17 120-83-2 2,4-Dichlorophenol 50 42.2 84 45.2 90 7 70-104/18 105-67-9 2,4-Dimethylphenol 50 37.4 75 41.5 83 10 64-98/20 51-28-5 2,4-Dinitrophenol 50 52.1 104 59.6 119 13 40-138/24 534-52-1 4,6-Dinitro-o-cresol 50 52.2 104 54.0 108 3 57-131/21 95-48-7 2-Methylphenol 50 33.3 67 35.6 71 7 53-83/18 3&4-Methylphenol 50 28.8 58 31.2 62 8 51-77/18 88-75-5 2-Nitrophenol 50 42.3 85 45.7 91 8 67-114/18 100-02-7 4-Nitrophenol 50 16.9 34 18.6 37 10 23-62/28 87-86-5 Pentachlorophenol 50 43.6 87 47.4 95 8 56-113/22 108-95-2 Phenol 50 19.2 38 21.7 43 12 24-50/24 88-06-2 2,4,6-Trichlorophenol 50 42.1 84 45.4 91 8 65-116/19 83-32-9 Acenaphthene 50 41.3 83 45.2 90 9 69-107/18 208-96-8 Acenaphthylene 50 42.3 85 46.2 92 9 67-114/20 120-12-7 Anthracene 50 45.1 90 49.1 98 8 73-109/19 56-55-3 Benzo(a)anthracene 50 43.9 88 47.9 96 9 71-109/19 50-32-8 Benzo(a)pyrene 50 48.8 98 53.4 107 9 73-116/19 205-99-2 Benzo(b)fluoranthene 50 46.0 92 51.7 103 12 73-114/21 191-24-2 Benzo(g,h,i)perylene 50 47.2 94 50.7 101 7 75-113/19 207-08-9 Benzo(k)fluoranthene 50 48.4 97 51.0 102 5 71-118/19 101-55-3 4-Bromophenyl Phenyl Ether 50 46.6 93 50.5 101 8 70-112/20 85-68-7 Butyl Benzyl Phthalate 50 47.1 94 51.8 104 10 72-118/20 106-47-8 4-Chloroaniline 50 35.7 71 38.0 76 6 60-105/17 111-91-1 bis(2-Chloroethoxy)methane 50 43.4 87 46.2 92 6 68-107/19 111-44-4 bis(2-Chloroethyl)ether 50 47.1 94 49.8 100 6 60-109/18 108-60-1 2,2'-Oxybis(1-chloropropane)50 43.8 88 45.9 92 5 48-119/18 91-58-7 2-Chloronaphthalene 50 39.7 79 43.2 86 8 67-106/19 7005-72-3 4-Chlorophenyl Phenyl Ether 50 45.1 90 49.2 98 9 67-115/19 218-01-9 Chrysene 50 44.1 88 48.7 97 10 74-108/19 53-70-3 Dibenzo(a,h)anthracene 50 48.1 96 51.6 103 7 75-115/19 132-64-9 Dibenzofuran 50 42.6 85 47.0 94 10 69-110/19 95-50-1 1,2-Dichlorobenzene 50 34.8 70 37.8 76 8 56-95/19 541-73-1 1,3-Dichlorobenzene 50 33.6 67 36.0 72 7 53-93/20 106-46-7 1,4-Dichlorobenzene 50 32.9 66 35.3 71 7 54-93/19 * = Outside of Control Limits. 38 of 48 LA8917066.2.1 Blank Spike/Blank Spike Duplicate Summary Page 2 of 2 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22504-BS1 P79663.D 1 04/05/23 BH 04/03/23 OP22504 EP3719 OP22504-BSD1 P79664.D 1 04/05/23 BH 04/03/23 OP22504 EP3719 The QC reported here applies to the following samples:Method: EPA 625.1 LA89170-1 Spike BSP BSP BSD BSD Limits CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD 91-94-1 3,3'-Dichlorobenzidine 50 44.0 88 48.6 97 10 67-114/19 84-66-2 Diethyl Phthalate 50 46.5 93 50.2 100 8 72-115/19 131-11-3 Dimethyl Phthalate 50 45.1 90 50.0 100 10 71-114/19 84-74-2 Di-n-butyl Phthalate 50 49.6 99 53.2 106 7 74-113/20 117-84-0 Di-n-octyl Phthalate 50 48.5 97 52.1 104 7 69-118/20 122-66-7 1,2-Diphenylhydrazine 50 46.8 94 51.6 103 10 70-114/19 117-81-7 bis(2-Ethylhexyl)phthalate 50 52.4 105 57.8 116 10 69-118/20 206-44-0 Fluoranthene 50 47.3 95 51.1 102 8 73-113/20 86-73-7 Fluorene 50 44.0 88 47.7 95 8 70-112/19 118-74-1 Hexachlorobenzene 50 46.0 92 50.5 101 9 71-111/20 87-68-3 Hexachlorobutadiene 50 32.1 64 35.4 71 10 45-101/21 77-47-4 Hexachlorocyclopentadiene 50 30.1 60 34.1 68 12 36-109/25 67-72-1 Hexachloroethane 50 32.4 65 35.5 71 9 47-94/20 193-39-5 Indeno(1,2,3-cd)pyrene 50 49.1 98 52.8 106 7 75-114/19 78-59-1 Isophorone 50 45.7 91 48.7 97 6 67-111/18 90-12-0 1-Methylnaphthalene 50 38.4 77 41.4 83 8 67-102/19 91-57-6 2-Methylnaphthalene 50 38.6 77 42.0 84 8 67-102/18 91-20-3 Naphthalene 50 37.2 74 39.7 79 7 66-100/18 98-95-3 Nitrobenzene 50 44.5 89 46.2 92 4 69-109/18 621-64-7 N-Nitroso-di-n-propylamine 50 44.7 89 47.4 95 6 62-113/18 86-30-6 N-Nitrosodiphenylamine 50 45.8 92 49.8 100 8 69-110/20 85-01-8 Phenanthrene 50 43.7 87 48.1 96 10 73-106/20 129-00-0 Pyrene 50 45.8 92 49.5 99 8 74-111/18 120-82-1 1,2,4-Trichlorobenzene 50 35.8 72 37.8 76 5 57-99/19 CAS No.Surrogate Recoveries BSP BSD Limits 367-12-4 2-Fluorophenol 46%49%20-75% 4165-62-2 Phenol-d5 29%32%10-60% 118-79-6 2,4,6-Tribromophenol 98%105%38-138% 4165-60-0 Nitrobenzene-d5 85%90%44-132% 321-60-8 2-Fluorobiphenyl 81%87%40-119% 1718-51-0 Terphenyl-d14 94%102%40-127% * = Outside of Control Limits. 39 of 48 LA8917066.2.1 Blank Spike/Blank Spike Duplicate Summary Page 1 of 1 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22504-BS2 P79665.D 1 04/05/23 BH 04/03/23 OP22504 EP3719 OP22504-BSD2 P79666.D 1 04/05/23 BH 04/03/23 OP22504 EP3719 The QC reported here applies to the following samples:Method: EPA 625.1 LA89170-1 Spike BSP BSP BSD BSD Limits CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD CAS No.Surrogate Recoveries BSP BSD Limits 367-12-4 2-Fluorophenol 51%47%20-75% 4165-62-2 Phenol-d5 34%31%10-60% 118-79-6 2,4,6-Tribromophenol 102%96%38-138% 4165-60-0 Nitrobenzene-d5 86%85%44-132% 321-60-8 2-Fluorobiphenyl 82%80%40-119% 1718-51-0 Terphenyl-d14 105%98%40-127% * = Outside of Control Limits. 40 of 48 LA8917066.2.2 Blank Spike/Blank Spike Duplicate Summary Page 1 of 1 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22504-BS1 W58014.D 1 04/06/23 BH 04/03/23 OP22504 EW2786 OP22504-BSD1 W58015.D 1 04/06/23 BH 04/03/23 OP22504 EW2786 The QC reported here applies to the following samples:Method: EPA 625.1 LA89170-1 Spike BSP BSP BSD BSD Limits CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD 100-51-6 Benzyl Alcohol 50 32.2 64 34.9 70 8 57-90/17 CAS No.Surrogate Recoveries BSP BSD Limits 367-12-4 2-Fluorophenol 42%46%20-75% 4165-62-2 Phenol-d5 28%30%10-60% 118-79-6 2,4,6-Tribromophenol 100%110%38-138% 4165-60-0 Nitrobenzene-d5 102%104%44-132% 321-60-8 2-Fluorobiphenyl 72%82%40-119% 1718-51-0 Terphenyl-d14 87%91%40-127% * = Outside of Control Limits. 41 of 48 LA8917066.2.3 SGS North America Inc. GC Volatiles QC Data Summaries Includes the following where applicable: • Method Blank Summaries • Blank Spike Summaries • Matrix Spike and Duplicate Summaries Scott, LA Section 7 42 of 48 LA891707 Method Blank Summary Page 1 of 1 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch GLE2404-MB2 LE041061.D 1 04/04/23 JB n/a n/a GLE2404 The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1 LA89170-1 CAS No.Compound Result RL MDL Units Q C5- C8 Aliphatics (Unadj.)ND 100 50 ug/l C9- C12 Aliphatics (Unadj.)ND 100 50 ug/l C9- C10 Aromatics (Unadj.)ND 100 20 ug/l CAS No.Surrogate Recoveries Limits 615-59-8 2,5-Dibromotoluene 110%70-130% 615-59-8 2,5-Dibromotoluene 110%70-130% 43 of 48 LA8917077.1.1 Blank Spike/Blank Spike Duplicate Summary Page 1 of 1 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch GLE2404-BS2 LE041059.D 1 04/03/23 JB n/a n/a GLE2404 GLE2404-BSD2 LE041060.D 1 04/04/23 JB n/a n/a GLE2404 The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1 LA89170-1 Spike BSP BSP BSD BSD Limits CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD C5- C8 Aliphatics (Unadj.)120 109 91 111 92 2 70-130/25 C9- C12 Aliphatics (Unadj.)120 113 94 108 90 5 70-130/25 C9- C10 Aromatics (Unadj.)40 40.1 100 40.5 101 1 70-130/25 CAS No.Surrogate Recoveries BSP BSD Limits 615-59-8 2,5-Dibromotoluene 108%110%70-130% 615-59-8 2,5-Dibromotoluene 109%111%70-130% * = Outside of Control Limits. 44 of 48 LA8917077.2.1 Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 1 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch LA89170-1MS LE041064.D 10 04/04/23 JB n/a n/a GLE2404 LA89170-1MSD LE041065.D 10 04/04/23 JB n/a n/a GLE2404 LA89170-1 LE041062.D 1 04/04/23 JB n/a n/a GLE2404 The QC reported here applies to the following samples:Method: MADEP VPH REV 2.1 LA89170-1 LA89170-1 Spike MS MS Spike MSD MSD Limits CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD C5- C8 Aliphatics (Unadj.)ND 2400 1030 43* a 2400 1030 43* a 0 70-130/50 C9- C12 Aliphatics (Unadj.)644 3200 870 7* a 3200 849 6* a 2 70-130/50 C9- C10 Aromatics (Unadj.)164 800 395 29* a 800 396 29* a 0 70-130/50 CAS No.Surrogate Recoveries MS MSD LA89170-1 Limits 615-59-8 2,5-Dibromotoluene 130%130%146%* b 70-130% 615-59-8 2,5-Dibromotoluene 110%112%110%70-130% (a) Outside control limits due to matrix interference. Blank Spike meets acceptance criteria. (b) Outside control limits due to matrix interference. Confirmed by MS/MSD at a dilution. * = Outside of Control Limits. 45 of 48 LA8917077.3.1 SGS North America Inc. GC/LC Semi-volatiles QC Data Summaries Includes the following where applicable: • Method Blank Summaries • Blank Spike Summaries • Matrix Spike and Duplicate Summaries Scott, LA Section 8 46 of 48 LA891708 Method Blank Summary Page 1 of 1 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22508-MB LZ0022075.D 1 04/05/23 KM 04/04/23 OP22508 GLZ479 The QC reported here applies to the following samples:Method: MADEP EPH REV 2.1 LA89170-1 CAS No.Compound Result RL MDL Units Q C11-C22 Aromatics (Unadj.)ND 370 240 ug/l C9-C18 Aliphatics ND 370 190 ug/l C19-C36 Aliphatics ND 370 80 ug/l CAS No.Surrogate Recoveries Limits 3386-33-2 1-Chlorooctadecane 89%40-140% 84-15-1 o-Terphenyl 86%40-140% 321-60-8 2-Fluorobiphenyl 78%40-140% 47 of 48 LA8917088.1.1 Blank Spike/Blank Spike Duplicate Summary Page 1 of 1 Job Number:LA89170 Account:ATCNCR Atlas Project:Hub Service Center Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch OP22508-BS LZ0022079.D 1 04/05/23 KM 04/04/23 OP22508 GLZ479 OP22508-BSD LZ0022083.D 1 04/05/23 KM 04/04/23 OP22508 GLZ479 The QC reported here applies to the following samples:Method: MADEP EPH REV 2.1 LA89170-1 Spike BSP BSP BSD BSD Limits CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD C11-C22 Aromatics (Unadj.)7870 5940 75 6010 77 1 40-140/30 C9-C18 Aliphatics 2780 2330 84 2340 85 0 40-140/30 C19-C36 Aliphatics 3700 3000 81 2980 81 1 40-140/30 CAS No.Surrogate Recoveries BSP BSD Limits 3386-33-2 1-Chlorooctadecane 81%81%40-140% 84-15-1 o-Terphenyl 83%84%40-140% 321-60-8 2-Fluorobiphenyl 79%79%40-140% Sample Compound Col #1 Col #2 Breakthrough Limit OP22508-BS 2-Methylnaphthalene 381 ND 0.0%5.0 OP22508-BS Naphthalene 366 ND 0.0%5.0 OP22508-BSD 2-Methylnaphthalene 390 ND 0.0%5.0 OP22508-BSD Naphthalene 372 ND 0.0%5.0 * = Outside of Control Limits. 48 of 48 LA8917088.2.1