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HomeMy WebLinkAboutMO-9564_40995_CA_MRP_20241118EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com Excel Civil & Environmental Associates, PLLC 6 2 5 H u n t s m a n C o u r t G a s t o n i a , N o r t h C a r o l i n a 2 8 0 5 4 N C L i c e n s e N o . P - 0 1 2 9 T e l e p h o n e : ( 7 0 4 ) 8 5 3 - 0 8 0 0 F a c s i m i l e : ( 7 0 4 ) 8 5 3 - 3 9 4 9 I n t e r n e t : www.excelengr.com November 18, 2024 Mr. Dan Bowser NCDEQ / DWM / UST Section Mooresville Regional Office 610 East Center Ave, Suite 301 Mooresville, North Carolina 28115 Re: Groundwater Monitoring Report Sam’s Mart 103 (former 715) 3215 Queen City Drive Charlotte, North Carolina Land Use: COMMERCIAL SITE RISK: INTERMEDIATE MO-9564_40995_CA_20241118_GWMonitoringReport EXCEL Project No. 2020004 Dear Mr. Bowser: On behalf of Sam’s Mart LLC, Incorporated, Excel Civil & Environmental Associates, PLLC (Excel) respectfully submits for your review and approval this Groundwater Monitoring Report for the above-referenced facility. If you have any questions, please contact the undersigned. Sincerely yours, EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC Aaron C. Long, P.E. Principal Engineer p.c. Adnan Jazairi / Sam’s Mart, Inc. / Matthews, NC GROUNDWATER MONITORING REPORT SAM’S MART 103 (FORMER 715) 3215 QUEEN CITY DRIVE CHARLOTTE, MECKLENBURG COUNTY, NORTH CAROLINA NCDEQ INCIDENT NO. 40995 NCDEQ FACILITY ID NO. 00-0-0000014954 EXCEL PROJECT NO. 2020004 LATITUDE = 35.240161 / LONGITUDE = (-) 80.918470 Date submitted November 18, 2024 Prepared for Mr. Adnan Jazairi Chief Operating Officer Sam’s Mart, Inc. 7935 Council Place, Suite 200 Matthews, North Carolina 28105 Prepared by Excel Civil & Environmental Associates, PLLC 625 Huntsman Court Gastonia, North Carolina 28054 NC License No. P-0129 www.excelengr.com Aaron C. Long, P.E. Principal Engineer Groundwater Monitoring Report NCDEQ No. 00-0-0000014954 Sam’s Mart 103 (Former 715) Excel No. 2020004 Charlotte, North Carolina Page No. i EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com TABLE OF CONTENTS SECTION NO. PAGE NO. TABLE OF CONTENTS ……………………………………………………………………………………. i 1.0 EXECUTIVE SUMMARY……………………………………………………………………………. 1 2.0 BACKGROUND INFORMATION.……………………………………………………………………. 1 2.1 AREA OF INVESTIGATION.………………………………………………………………….. 1 2.2 RECEPTOR SURVEY.……………………………………………………………………….. 2 2.3 PREVIOUS INVESTIGATIONS.………………………………………………………………. 2 3.0 GEOLOGIC FRAMEWORK.………………………………………………………………………… 2 3.1 REGIONAL GEOLOGY.……………………………………………………………………… 2 3.2 SITE GEOLOGY.…………………………………………………………………………….. 2 4.0 FIELD ACTIVITIES.…………………………………………………………………………………. 3 5.0 LABORATORY ANALYSIS………………………………………………………………………….. 3 6.0 SUMMARY & RECOMMENDATIONS……………………………………………………………….. 4 7.0 LIMITATIONS……………………………………………………………………………………….. 5 8.0 REFERENCES…………………………………………………………………………………….... 5 LIST OF TABLES TABLE 1 – LIQUID LEVEL DATA TABLE 2 – GROUNDWATER SUMMARY DATA TABLE 3 – FIELD MEASUREMENTS OF GROUNDWATER SAMPLES LIST OF FIGURES FIGURE 1 – TOPOGRAPHICAL MAP FIGURE 2 – SITE PLAN FIGURE 3 – WATER TABLE CONTOUR MAP FIGURE 4 - GROUNDWATER CONSTITUENTS MAP LIST OF APPENDICES APPENDIX A – LABORATORY REPORTS & CHAIN OF CUSTODY FORM(S) APPENDIX B – REPORTING TABLES (B-1, B-2, B-6, B-10) Groundwater Monitoring Report NCDEQ No. 00-0-0000014954 Sam’s Mart 103 (Former 715) Excel No. 2020004 Charlotte, North Carolina Page No. ii EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com PROJECT INFORMATION SUMMARY Facility Name: Sam’s Mart #103 Facility Address: 3215 Queen City Drive Charlotte, Mecklenburg County, North Carolina NCDEQ Incident Number: 40995 Facility UST ID Number: MO-9564628 NCDEQ Incident Manger: Daniel Bowser, MRO, UST Section Site Risk / Priority Rank: Intermediate Reason for Risk Classification: Groundwater Contamination exceeding GCLs Land Use Category: Commercial / Residential CONTACT INFORMATION Responsible Party: Sam’s Mart, Inc. 7935 Council Place, #200 Matthews, North Carolina 28105 Phone: (704) 506-6134 Current Property Owner: SAMS INVESTMENTS VI LLC 7935 Council Place, #200 Matthews, North Carolina 28105 Consultant: Excel Civil & Environmental Associates, PLLC 625 Huntsman Court Gastonia, North Carolina 28054 License No. P-0129 Consultant Contact: Aaron C. Long, P.E. Principal Engineer Phone: (704) 853-0800 Email: along@excelengr.com Analytical Laboratory: PACE - ESC Lab Sciences 12065 Lebanon Road Mt. Juliet, TN 37122 Phone: (615) 758-5858 Certification No. ENV375/DW21704/BIO041 RELEASE INFORMATION Date Discovered: January 16, 2020 Estimated Quantity of Release: Unknown Source of Release: Gasoline Underground Storage Tank Lines UST(s) Size & Contents: (5) 10,000-gal Gasoline and Diesel Groundwater Monitoring Report NCDEQ No. 00-0-0000014954 Sam’s Mart 103 (Former 715) Excel No. 2020004 Charlotte, North Carolina Page No. iv EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com 1.0 EXECUTIVE SUMMARY The Sam’s Mart 103 (former 715) facility is located at 3215 Queen City Drive within the incorporated limits of Charlotte, Mecklenburg County, North Carolina (refer to Figure 1). This assessment included a groundwater sampling event following completion of a Mobile Multi- Phase Extraction (MMPE) event in June 2024. Prior activities at the property include a UST line removal performed by Excel in January 2020, a Limited Site Assessment Report completed on March 25, 2020 and to assess soil and groundwater conditions at the site and a Comprehensive Site Assessment was conducted by Excel during May through December 2020. 2.0 BACKGROUND INFORMATION 2.1 AREA OF INVESTIGATION The subject property is located on the southeastern corner of the intersection of Mulberry Church Road and Queen City Drive, located inside the incorporated city limits of Charlotte, North Carolina (refer to Figure 1). The subject property consists of one approximately rectangular parcel of land with an area of approximately 0.843-acres. The property is currently an active gas station and convenience store. The City of Charlotte has designated this property as zoned B-2 General Business. Queen City Drive bounds the property to the north and tracks in an approximate east-west direction and Mulberry Church Road bounds the property to the west and tracks in an approximate north-south direction. I-85 bounds the property to the south and tracks in an approximate east-west direction. The surrounding properties consist of commercial properties with Queen City Drive and a hotel to the north, a restaurant to the east, Interstate 85 to the south and Mulberry Church Road and a restaurant to the west. Line closure activities were conducted at the site in early January 2020. During the closure activities, impacted soils were identified with approximately 235.49 tons removed and temporarily stockpiled. On January 7 and 13, 2020, Henry Nemargut Engineering collected soil samples along the former product piping trenches as outlined in the UST removal guidelines. The lines have since been replaced and backfilled and the property is currently active at this time (refer to Figure 2). A Comprehensive Site Assessment was conducted by Excel during May through December 2020. The assessment included the installation of five soil borings, eight monitoring wells, soil, groundwater and potable well water sampling, laboratory analysis and obtaining a right of entry agreement for an offsite monitor well. The areal extent of benzene, MTBE and naphthalene impacted in groundwater above the NCAC 2L levels was estimated to be approximately 40,000, 30,000 and 25,000 sf, respectively. Groundwater samples collected from monitor well MW-4 exceeded the Gross Contamination Levels (GCLs) for benzene (refer to Table 2). The subject site is located in the Piedmont Physiographic Province. Rocks are, for the most part, metamorphosed and deeply weathered. The 1985 USGS Geologic Map of North Carolina indicates underlying formations in this area of the Piedmont Groundwater Monitoring Report NCDEQ No. 00-0-0000014954 Sam’s Mart 103 (Former 715) Excel No. 2020004 Charlotte, North Carolina Page No. v EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com Physiographic Province consisting of a biotite gneiss and schists. The majority of the site is covered by impervious surfaces such as asphalt and concrete. The general topography of the site is developed to slope to the south with site-specific surface drainage expected to flow towards a detention pond on the southern side of the property. 2.2 RECEPTOR SURVEY Based on a receptor survey completed in March 2020, Excel identified one active potable well within 500 feet of the subject property servicing two residential properties. The water supply well was utilized at 3109 and 3111 Mulberry Church Road, Charlotte, North Carolina. The two properties were connected to public water by Plumbing Connection in October of 2022. The water supply well was abandoned on January 17, 2024. According to the USGS Topographical Map for this area and vehicle reconnaissance, the nearest surface water body, an unnamed tributary of Taggart Creek, is located approximately 2,350 feet to the southeast of the subject property. The site is not located in a designated wellhead protection area. 2.3 PREVIOUS INVESTIGATIONS Line Closure Assessment, Limited Site Assessment and Comprehensive Site Assessment. 3.0 GEOLOGIC FRAMEWORK 3.1 REGIONAL GEOLOGY The subject site is located in the Piedmont Physiographic Province. Rocks are, for the most part, metamorphosed and deeply weathered. The 1985 USGS Geologic Map of North Carolina indicates underlying formations in this area of the Piedmont Physiographic Province consisting of a biotite gneiss and schists. 3.2 SITE GEOLOGY During previous site assessment activities, a tan silty clay material was observed from the ground surface to a depth of approximately sixteen feet below ground surface (fbgl) and a brown sandy clay was located from 16-fbgl to the termination depth of approximately 35-fbgl. The type of soils observed at the property appear to be consistent with the surficial sediments common for this area. During groundwater sampling activities conducted as part of this assessment, groundwater was measured to be an approximate depth of 23 feet below grade level at the site. Groundwater Monitoring Report NCDEQ No. 00-0-0000014954 Sam’s Mart 103 (Former 715) Excel No. 2020004 Charlotte, North Carolina Page No. vi EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com 4.0 FIELD ACTIVITIES On October 2 and 3, 2024, Excel personnel visited the site to collect groundwater samples from all available monitoring wells. During the groundwater monitoring event, monitoring well MW-2 was not located during the sampling event. Prior to groundwater sampling, Excel conducted a Mobile Multi-Phase Extraction (MMPE) event at the Site from June 10-14, 2024. The MMPE event was conducted to reduce constituents of concern in the vicinity of monitor well MW-4R. The event was conducted using an Excel vacuum extraction mobile unit. A total of 1,607 gallons were removed from MW-4R. Fluids recovered were pumped into a mobile tanker unit. Following the measurement of the static groundwater level, a minimum of three well volumes of water were purged from the well using a disposable polyethylene bailer in wells that were to be sampled. The samples were stored on ice and transported under chain-of-custody procedures to Pace Analytical in Mt. Juliet, Tennessee. Each groundwater sample was analyzed for volatile organic compounds (VOCs) using EPA Method 6200B including MTBE, IPE and EDB. 5.0 LABORATORY ANALYSIS Groundwater samples were collected from monitoring wells MW-1, MW-3, MW-4, MW-4R, MW- 5, MW-6, MW-7, MW-8 and VW-1. The laboratory results for the groundwater samples collected for MW-5, MW-6, MW-7 and VW-1 indicate groundwater concentrations below the NCAC 2L standards for all constituents. The laboratory results for the groundwater samples collected for MW-1, MW-3, MW-4R and MW-8 indicated concentrations above NCAC 2L standards for various constituents. The laboratory results for the groundwater samples collected for MW-4R indicated concentrations above NCAC 2L standards for various constituents and exceedance above the applicable NCDEQ Gross Contamination Levels (GCLS) for benzene. The results of the sampling event indicate a slight increase for benzene in monitor well MW-4R from the previous sampling round and an overall reduction of 95.0% from the previous MMPE event conducted in June 2024. The results of the sampling event indicate a decrease in benzene levels for monitor well MW-4 from the initial sampling round and prior to the initial MMPE completed in January 2024 of 53.4% and 25.3%, respectively. Overall, the groundwater constituent levels across the property appear to have decreased since the initial sampling round conducted in July of 2020 indicating natural attenuation may be occurring and the MMPE events are effective. For a summary of groundwater analytical results, refer to Table 2 and Figure 4. The areal extent of benzene, MTBE and naphthalene impact in groundwater above the NCAC 2L standards is estimated to be approximately 20,500 sf, 22,500 sf and 3,300 sf in the vicinity of MW-1, MW-3 and MW-4, respectively. The areal extent of benzene impact in groundwater above the NCDEQ GCL standards is estimated to be approximately 550 sf in the vicinity of MW-4. The analytical laboratory report for both soil and groundwater sampling activities and associated Chain-of-Custody forms are presented in Appendix A. Groundwater Monitoring Report NCDEQ No. 00-0-0000014954 Sam’s Mart 103 (Former 715) Excel No. 2020004 Charlotte, North Carolina Page No. vii EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com 6.0 SUMMARY & RECOMMENDATIONS Based on the information in this report Excel concludes the following: The areal extent of benzene, MTBE and naphthalene impact in groundwater above the NCAC 2L standards is estimated to be approximately 20,500 sf, 22,500 sf and 3,300 sf in the vicinity of MW-1, MW-3 and MW-4, respectively. The areal extent of benzene impact in groundwater above the NCDEQ GCL standards is estimated to be approximately 550 sf in the vicinity of MW-4; Based on the groundwater sampling event conducted in October 2024, the groundwater sample collected from monitor well MW-4R were found to be below the Gross Contamination Levels (GCLs) for benzene (refer to Table 2); Based on a receptor survey completed in March 2020, Excel identified one active potable well within 500 feet of the subject property servicing two residential properties. The water supply well was utilized at 3109 and 3111 Mulberry Church Road, Charlotte, North Carolina. The two properties were connected to public water by Plumbing Connection in October of 2022. The water supply well was abandoned on January 17, 2024; The results of the sampling event indicate a slight increase for benzene in monitor well MW-4R from the previous sampling round and an overall reduction of 95.0% from the previous MMPE event conducted in June 2024. The results of the sampling event indicate a decrease in benzene levels for monitor well MW-4 from the initial sampling round and prior to the initial MMPE completed in January 2024 of 53.4% and 25.3%, respectively; At this time, we recommend a subsequent MMPE event be conducted at monitoring well MW-4 with a follow up groundwater sampling event for this incident. If MW-4 is found to be dry or inaccessible, than MW-4R will be utilized during the event. Groundwater Monitoring Report NCDEQ No. 00-0-0000014954 Sam’s Mart 103 (Former 715) Excel No. 2020004 Charlotte, North Carolina Page No. viii EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com 7.0 LIMITATIONS This report is based on a limited number of soil and groundwater samples and chemical analyses. The conclusions presented in this report are based only on the observations made during this investigation and data provided by others. Subsurface conditions may vary significantly with time, particularly with respect to groundwater elevations and quality. Conclusions and recommendations set forth herein are applicable only to the facts and conditions described at the time of this report. In performing its professional services, Excel uses that degree of care and skill exercised under similar circumstances by members of the environmental profession practicing in the same or similar locality under similar conditions. The standard of care shall be judged exclusively as of the time these services are rendered and not according to later standards. Excel makes no express or implied warranty beyond its conformance to this standard. Excel shall not be responsible for conditions or consequences arising from relevant facts that were concealed, withheld or not fully disclosed for this report. Excel believes that all information contained in this report is factual, but no guarantee is made or implied. 8.0 REFERENCES Driscoll, “Groundwater and Wells”, 2nd edition, (St. Paul, Minnesota, Johnson Division). R. Perry and C. Chilton, “Chemical Engineer's Handbook”, 5th edition, (New York: McGraw Hill, Inc. 1973). “Guidelines for Assessment and Corrective Action for UST Releases” completed by the UST Section of the NCDEQ, Division of Waste Management dated December 1, 2013 and any applicable amendments. “Initial Abatement Action Report” completed by Excel, dated January 27, 2020. “Limited Site Assessment Report” completed by Excel, dated March 25, 2020. “Comprehensive Assessment Report” completed by Excel, dated January 6, 2021. EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com LIST OF TABLES TABLE 1 – LIQUID LEVEL DATA TABLE 2 – GROUNDWATER SUMMARY DATA TABLE 3 – FIELD MEASUREMENTS OF THE GROUNDWATER SAMPLES Table 1 - Liquid Level Data Sam's Mart 103 (Former 715) 3215 Queen City Drive, Charlotte, North Carolina NCDEQ Incident 40995 Excel Project No. 2020004 WELL NUMBER DATE INSTALLED WELL DEPTH (ft) SCREEN INTERVAL (ft)TOC (ft)DATE MEASURED DTW (ft) WTE (ft) MW-1 26-Feb-20 25 10-25 100.00 21.19 78.81 MW-2 29-Jun-20 25 10-25 102.70 Not Located -- MW-3 29-Jun-20 25 10-25 98.94 21.93 77.01 MW-4 1-Jul-20 25 10-25 100.12 20.11 80.01 MW-4R 2-Nov-23 35 15-35 -- 20.25 -- MW-5 21-Sep-20 25 10-25 96.82 18.34 78.48 MW-6 21-Sep-20 25 10-25 96.11 20.26 75.85 MW-7 6-Oct-20 25 10-25 100.67 20.18 80.49 MW-8 6-Oct-20 25 10-25 100.30 20.66 79.64 VW-1 1-Jul-20 35 30-35 -- 21.30 -- NOTES: Data provided in feet unless otherwise noted NM- Not Measured DTW - Depth to Water WTE - Water Table Elevation TOC elevation for MW-1 set to datum of 100' 10/2/24 & 10/3/24 Table 2 - Groundwater Summary Data Sam's Mart 103 (Former 715) 3215 Queen City Drive, Charlotte, North Carolina NCDEQ Incident 40995 Excel Project No. 2020004 SAMPLE LOCATION MW-2 DATE SAMPLED 28-Feb-20 7-Jul-20 31-May-23 9-Jul-24 3-Oct-24 7-Jul-20 7-Jul-20 8-Jul-24 2-Oct-24 EPH C9 - C18 Aliphatics 53 B J 81 B J NA NA NA 50 B J < 33.3 NA NA -- -- EPH C19 - C36 Aliphatics < 33.3 40.9 J NA NA NA 47.5 J < 33.3 NA NA 10,000 -- EPH C11 - C22 Aromatics 108 132 B NA NA NA 66.5 B J < 33.3 NA NA -- -- VPH C5 - C8 Aliphatics 9,510 10,100 NA NA NA 3,510 1,390 NA NA 400 -- VPH C9 - C12 Aliphatics 2,890 1,870 NA NA NA 85.9 J 178 NA NA -- -- VPH C9 - C10 Aromatics 1,390 981 NA NA NA < 33.3 < 33.3 NA NA -- -- TOTAL C9 - C18 Aliphatics 2,943 1,951 NA NA NA 135.9 < 211.3 NA NA 700 -- TOTAL C9 - C22 Aromatics 1,498 1,113 NA NA NA < 99.8 BDL NA NA 200 -- BENZENE 1,220 1,120 532 182 124 4.97 103 0.11 J < 0.0941 1 5,000 TOLUENE 28.3 28.4 11.8 < 5.56 < 5.56 2.39 2.33 < 0.278 < 0.278 600 260,000 ETHYLBENZENE 845 683 92.5 27.8 15 J 0.806 J 15.9 < 0.137 < 0.137 600 84,500 TOTAL XYLENES 747.5 358.7 74.3 < 12.08 < 12.08 8.99 32.39 < 0.604 < 0.604 500 85,500 MTBE 10,900 5,940 1,040 694 889 < 0.101 159 132 172 20 20,000 NAPHTHALENE 15.9 J 53 4.02 J < 20 < 20 3.62 J < 1 < 1 < 1 6 6,000 N-PROPYLBENZENE 93.7 J 86.7 13.9 4.05 J 2.65 J 0.547 J 3.5 < 0.0993 < 0.0993 70 30,000 1,2,4-TRIMETHYLBENZENE 261 75.9 22.9 < 6.44 < 6.44 4.32 9.29 < 0.322 < 0.322 400 28,500 1,3,5-TRIMETHYLBENZENE < 3.87 9.38 4.41 < 2.08 < 2.08 1.29 0.625 J < 0.104 < 0.104 400 25,000 DI-ISOPROPYL ETHER 174 J 192 173 175 162 < 0.105 6.55 3.25 8.43 70 70,000 sec-BUTYLBENZENE 7.04 J 5.22 4.19 < 2.50 < 2.50 0.466 J 0.652 J < 0.125 < 0.125 70 8,500 ISOPROPYLBENZENE 38.6 29.7 8.36 7.66 J 2.46 J 0.591 J 4.88 < 0.105 < 0.105 70 25,000 p-ISOPROPYLTOLUENE 5.91 J 4.84 2.59 < 2.40 < 2.40 0.339 J 0.381 J < 0.120 < 0.120 25 11,700 NAPHTHALENE 11 19.5 NA NA NA 1.81 0.209 J NA NA 6 6,000 DI-N-BUTYL PHTHALATE 2.68 J < 0.453 NA NA NA < 0.453 < 0.453 NA NA 700 -- DIETHYL PHTHALATE 14.3 < 0.287 NA NA NA < 0.287 < 0.287 NA NA 6,000 -- Me t a l s LEAD 91.1 15.6 NA NA NA 4.38 J 23.4 NA NA 15 15,000 NOTES: Data in ug/l MTBE - Methyl Tert Butyl Ether MADEP - Massachusetts Dept. of Environmental Protection J - Reported value is an estimate EPH - Extractable Petroleum Hydrocarbons B - The same analyte was found in the associated blank VPH - Volatile Petroleum Hydrocarbons NA - Not Analyzed VOC - Volatile Organic Compound Bold data represents constituents above NCAC 2L Standards SVOC - Semi-Volatile Organic Compound Highlighted data represent constituents above GCL Standards Additional Results from July 2020 Sampling Event: Data in ug/l MW-1: 4.58 n-Butylbenzene, 327 TAA, 1,990 TBA, 113 TAME, 0.525 J Acenaphthene, 0.276 J Fluorene, 0.306 J Phenanthrene, 5.65 J Phenol MW-2: 0.687 J Tetrachloroethene, 377 TAA, 33.3 TBA MW-3: 139 TAA, 38.4 TBA, 2.66 TAME MW-4: 10,300 J TAA, 1,170 J TBA, 600 TAME, 0.521 J Acenaphthene, 0.351 J Anthracene, 0.183 J Fluoranthene, 0.707 J Fluorene, 1.01 Phenanthrene, 0.229 J Pyrene, 9.74 J Phenol VW-1: 10.6 Chloroform, 0.589 J Methylene Chloride, 95.9 TAA, 257 TBA, 18.6 TAME VO C s MA D E P SV O C s NCAC 2L GCLMW-1 MW-3 Table 2 - Groundwater Summary Data Sam's Mart 103 (Former 715) 3215 Queen City Drive, Charlotte, North Carolina NCDEQ Incident 40995 Excel Project No. 2020004 SAMPLE LOCATION DATE SAMPLED 7-Jul-20 31-May-23 3-Oct-24 30-Jan-24 9-Jul-24 2-Oct-24 EPH C9 - C18 Aliphatics 11,000 NA NA NA NA NA -- -- EPH C19 - C36 Aliphatics 471 NA NA NA NA NA 10,000 -- EPH C11 - C22 Aromatics 5,360 NA NA NA NA NA -- -- VPH C5 - C8 Aliphatics 112,000 NA NA NA NA NA 400 -- VPH C9 - C12 Aliphatics 32,900 NA NA NA NA NA -- -- VPH C9 - C10 Aromatics 8,690 J NA NA NA NA NA -- -- TOTAL C9 - C18 Aliphatics 43,900 NA NA NA NA NA 700 -- TOTAL C9 - C22 Aromatics 14,050 NA NA NA NA NA 200 -- BENZENE 18,100 11,300 8,440 10,400 206 522 1 5,000 TOLUENE 40,500 21,200 22,100 13,900 609 852 600 260,000 ETHYLBENZENE 3,510 3,350 2,520 1,870 115 204 600 84,500 TOTAL XYLENES 18,580 15,790 9,800 9,210 673 927 500 85,500 MTBE 18,200 4,940 305 J 12,600 69.5 138 20 20,000 NAPHTHALENE 918 J < 500 < 500 540 32.5 J 31.8 J 6 6,000 N-PROPYLBENZENE 329 386 J 194 J 280 18.3 20.1 70 30,000 1,2,4-TRIMETHYLBENZENE 3,090 2,920 1,590 2,320 143 205 400 28,500 1,3,5-TRIMETHYLBENZENE 688 820 413 J 575 38.5 53.4 400 25,000 DI-ISOPROPYL ETHER 1,760 803 204 J 1,600 16.1 29.7 70 70,000 sec-BUTYLBENZENE < 31.3 < 62.5 < 62.5 < 12.5 3.31 J < 2.50 70 8,500 ISOPROPYLBENZENE 121 J 134 J 83.6 J 96 J 7.3 J 7.86 J 70 25,000 p-ISOPROPYLTOLUENE 44.5 J < 60 < 60 < 12 2.52 J < 2.40 25 11,700 NAPHTHALENE 439 NA NA NA NA NA 6 6,000 DI-N-BUTYL PHTHALATE < 0.453 NA NA NA NA NA 700 -- DIETHYL PHTHALATE < 0.287 NA NA NA NA NA 6,000 -- Me t a l s LEAD NA NA NA NA NA NA 15 15,000 NOTES: Data in ug/l MTBE - Methyl Tert Butyl Ether MADEP - Massachusetts Dept. of Environmental Protection J - Reported value is an estimate EPH - Extractable Petroleum Hydrocarbons B - The same analyte was found in the associated blank VPH - Volatile Petroleum Hydrocarbons NA - Not Analyzed VOC - Volatile Organic Compound Bold data represents constituents above NCAC 2L Standards SVOC - Semi-Volatile Organic Compound Highlighted data represent constituents above GCL Standards Additional Results from July 2020 Sampling Event: Data in ug/l MW-1: 4.58 n-Butylbenzene, 327 TAA, 1,990 TBA, 113 TAME, 0.525 J Acenaphthene, 0.276 J Fluorene, 0.306 J Phenanthrene, 5.65 J Phenol MW-2: 0.687 J Tetrachloroethene, 377 TAA, 33.3 TBA MW-3: 139 TAA, 38.4 TBA, 2.66 TAME MW-4: 10,300 J TAA, 1,170 J TBA, 600 TAME, 0.521 J Acenaphthene, 0.351 J Anthracene, 0.183 J Fluoranthene, 0.707 J Fluorene, 1.01 Phenanthrene, 0.229 J Pyrene, 9.74 J Phenol VW-1: 10.6 Chloroform, 0.589 J Methylene Chloride, 95.9 TAA, 257 TBA, 18.6 TAME MA D E P VO C s SV O C s MW-4 MW-4R NCAC 2L GCL Table 2 - Groundwater Summary Data Cont'd Sam's Mart 103 (Former 715) 3215 Queen City Drive, Charlotte, North Carolina NCDEQ Incident 40995 Excel Project No. 2020004 SAMPLE LOCATION DATE SAMPLED 12-Oct-20 31-May-23 2-Oct-24 12-Oct-20 31-May-23 8-Jul-24 2-Oct-24 EPH C9 - C18 Aliphatics 71.8 B J NA NA 182 B NA NA NA -- -- EPH C19 - C36 Aliphatics < 33.3 NA NA < 37.3 NA NA NA 10,000 -- EPH C11 - C22 Aromatics 38.4 B J NA NA 47.2 B J NA NA NA -- -- VPH C5 - C8 Aliphatics < 33.3 NA NA 509 NA NA NA 400 -- VPH C9 - C12 Aliphatics < 33.3 NA NA 55.2 J NA NA NA -- -- VPH C9 - C10 Aromatics < 33.3 NA NA 50.8 J NA NA NA -- -- TOTAL C9 - C18 Aliphatics 71.8 B J NA NA 237.2 B J NA NA NA 700 -- TOTAL C9 - C22 Aromatics 38.4 B J NA NA 98 B J NA NA NA 200 -- BENZENE 0.361 J < 0.0941 < 0.0941 9.43 < 0.0941 < 0.0941 < 0.0941 1 5,000 TOLUENE < 0.278 < 0.278 < 0.278 4.45 < 0.278 < 0.278 < 0.278 600 260,000 ETHYLBENZENE < 0.137 0.372 J < 0.137 1.19 < 0.137 < 0.137 < 0.137 600 84,500 TOTAL XYLENES 1.006 J 0.514 J < 0.604 45.3 < 0.604 < 0.604 < 0.604 500 85,500 MTBE 7.78 < 0.101 < 0.101 851 130 1.40 0.102 J 20 20,000 NAPHTHALENE 1.11 J < 1 < 1 6.82 < 1 < 1 < 1 6 6,000 N-PROPYLBENZENE 0.282 J 0.141 J < 0.0993 0.348 J < 0.0993 < 0.0993 < 0.0993 70 30,000 1,2,4-TRIMETHYLBENZENE 1.56 0.425 J < 0.322 8.14 < 0.322 < 0.322 < 0.322 400 28,500 1,3,5-TRIMETHYLBENZENE 0.425 J < 0.104 < 0.104 0.344 J < 0.104 < 0.104 < 0.104 400 25,000 DI-ISOPROPYL ETHER < 0.105 < 0.105 < 0.105 < 0.105 < 0.105 < 0.105 < 0.105 70 70,000 sec-BUTYLBENZENE < 0.125 < 0.125 < 0.125 0.426 J < 0.125 < 0.125 < 0.125 70 8,500 ISOPROPYLBENZENE 0.124 J < 0.105 < 0.105 2.92 < 0.105 < 0.105 < 0.105 70 25,000 p-ISOPROPYLTOLUENE < 0.12 < 0.120 < 0.120 0.322 J < 0.120 < 0.120 < 0.120 25 11,700 NAPHTHALENE 0.329 J NA NA 0.298 J NA NA NA 6 6,000 DI-N-BUTYL PHTHALATE < 0.453 NA NA < 0.453 NA NA NA 700 -- DIETHYL PHTHALATE < 0.287 NA NA < 0.287 NA NA NA 6,000 -- Me t a l s LEAD < 14.8 NA NA < 2.95 NA NA NA 15 15,000 NOTES: Data in ug/l MTBE - Methyl Tert Butyl Ether MADEP - Massachusetts Dept. of Environmental Protection J - Reported value is an estimate EPH - Extractable Petroleum Hydrocarbons B - The same analyte was found in the associated blank VPH - Volatile Petroleum Hydrocarbons NA - Not Analyzed VOC - Volatile Organic Compound Bold data represents constituents above NCAC 2L Standards SVOC - Semi-Volatile Organic Compound Highlighted data represent constituents above GCL Standards Additional Results from October 2020 Sampling Event: Data in ug/l MW-5: 0.248 J n-Butylbenzene, MW-6: 0.261 J n-Butylbenzene, 7.05 J TAA, 6.88 TAME, 0.308 J Benzo(a)anthracene, 0.327 J Benzo(b)fluoranthene, 0.124 J Benzo(k)fluoranthene, 0.153 J Benzo(g,h,i)perylene, 0.276 J Benzo(a)pyrene, 0.192 J Chrysene, 0.132 J Fluoranthene, 0.188 J Pyrene MW-7: 10.9 MEK, 73 TAA, 7.48 TBA MW-8: 0.244 J n-Butylbenzene, 2.39 J MIBK, 114 TAA, 7.01 TBA, 0.255 J 2,4-Dimethylphenol VO C s SV O C s NCAC 2L GCL MA D E P MW-5 MW-6 Table 2 - Groundwater Summary Data Cont'd Sam's Mart 103 (Former 715) 3215 Queen City Drive, Charlotte, North Carolina NCDEQ Incident 40995 Excel Project No. 2020004 SAMPLE LOCATION DATE SAMPLED 12-Oct-20 31-May-23 8-Jul-24 2-Oct-24 12-Oct-20 9-Jul-24 2-Oct-24 EPH C9 - C18 Aliphatics 78.3 B J NA NA NA 152 B NA NA -- -- EPH C19 - C36 Aliphatics < 33.3 NA NA NA < 33.3 NA NA 10,000 -- EPH C11 - C22 Aromatics 45.8 B J NA NA NA 40.3 B J NA NA -- -- VPH C5 - C8 Aliphatics 1,400 NA NA NA 3,420 NA NA 400 -- VPH C9 - C12 Aliphatics 39.4 J NA NA NA 226 NA NA -- -- VPH C9 - C10 Aromatics < 33.3 NA NA NA 151 NA NA -- -- TOTAL C9 - C18 Aliphatics 117.7 B J NA NA NA 378 B NA NA 700 -- TOTAL C9 - C22 Aromatics 45.8 B J NA NA NA 191.3 B J NA NA 200 -- BENZENE 10.1 3.91 0.796 J 0.358 J 73.6 1.07 1.58 1 5,000 TOLUENE < 0.278 < 0.278 < 0.278 < 0.278 149 < 0.278 1.48 600 260,000 ETHYLBENZENE 0.543 J < 0.137 < 0.137 < 0.137 30.8 < 0.137 < 0.137 600 84,500 TOTAL XYLENES 2.814 J 0.501 J < 0.604 < 0.604 166 < 0.604 < 0.604 500 85,500 MTBE < 0.101 0.133 J < 0.101 0.104 J < 0.101 < 0.101 < 0.101 20 20,000 NAPHTHALENE < 1 < 1 < 1 < 1 10.7 < 1 < 1 6 6,000 N-PROPYLBENZENE 0.222 J < 0.0993 < 0.0993 < 0.0993 3.58 < 0.0993 0.136 J 70 30,000 1,2,4-TRIMETHYLBENZENE < 0.322 0.348 J < 0.322 < 0.322 30.8 < 0.322 < 0.322 400 28,500 1,3,5-TRIMETHYLBENZENE < 0.104 0.114 J < 0.104 < 0.104 1.91 < 0.104 < 0.104 400 25,000 DI-ISOPROPYL ETHER < 0.105 < 0.105 < 0.105 < 0.105 < 0.105 < 0.105 < 0.105 70 70,000 sec-BUTYLBENZENE < 0.125 < 0.125 < 0.125 < 0.125 1.19 0.234 J < 0.125 70 8,500 ISOPROPYLBENZENE 0.547 J 0.123 J < 0.105 < 0.105 3.32 0.299 J 0.126 J 70 25,000 p-ISOPROPYLTOLUENE 0.609 J < 0.120 < 0.120 < 0.120 0.505 B J < 0.120 < 0.120 25 11,700 NAPHTHALENE < 0.159 NA NA NA 8.46 NA NA 6 6,000 DI-N-BUTYL PHTHALATE < 0.453 NA NA NA < 0.453 NA NA 700 -- DIETHYL PHTHALATE 0.428 J NA NA NA < 0.287 NA NA 6,000 -- Me t a l s LEAD 54.1 NA NA NA 23.8 NA NA 15 15,000 NOTES: Data in ug/l MTBE - Methyl Tert Butyl Ether MADEP - Massachusetts Dept. of Environmental Protection J - Reported value is an estimate EPH - Extractable Petroleum Hydrocarbons B - The same analyte was found in the associated blank VPH - Volatile Petroleum Hydrocarbons NA - Not Analyzed VOC - Volatile Organic Compound Bold data represents constituents above NCAC 2L Standards SVOC - Semi-Volatile Organic Compound Highlighted data represent constituents above GCL Standards Additional Results from October 2020 Sampling Event: Data in ug/l MW-5: 0.248 J n-Butylbenzene, MW-6: 0.261 J n-Butylbenzene, 7.05 J TAA, 6.88 TAME, 0.308 J Benzo(a)anthracene, 0.327 J Benzo(b)fluoranthene, 0.124 J Benzo(k)fluoranthene, 0.153 J Benzo(g,h,i)perylene, 0.276 J Benzo(a)pyrene, 0.192 J Chrysene, 0.132 J Fluoranthene, 0.188 J Pyrene MW-7: 10.9 MEK, 73 TAA, 7.48 TBA MW-8: 0.244 J n-Butylbenzene, 2.39 J MIBK, 114 TAA, 7.01 TBA, 0.255 J 2,4-Dimethylphenol MA D E P VO C s SV O C s MW-7 MW-8 NCAC 2L GCL Table 2 - Groundwater Summary Data Cont'd Sam's Mart 103 (Former 715) 3215 Queen City Drive, Charlotte, North Carolina NCDEQ Incident 40995 Excel Project No. 2020004 SAMPLE LOCATION WS-1 DATE SAMPLED 7-Jul-20 20-Jan-23 31-May-23 31-Jan-24 9-Jul-24 3-Oct-24 7-Jul-20 EPH C9 - C18 Aliphatics < 33.3 NA NA NA NA NA NA -- -- EPH C19 - C36 Aliphatics < 33.3 NA NA NA NA NA NA 10,000 -- EPH C11 - C22 Aromatics < 33.3 NA NA NA NA NA NA -- -- VPH C5 - C8 Aliphatics 488 NA NA NA NA NA NA 400 -- VPH C9 - C12 Aliphatics < 33.3 NA NA NA NA NA NA -- -- VPH C9 - C10 Aromatics < 33.3 NA NA NA NA NA NA -- -- TOTAL C9 - C18 Aliphatics BDL NA NA NA NA NA NA 700 -- TOTAL C9 - C22 Aromatics BDL NA NA NA NA NA NA 200 -- BENZENE 10.6 < 0.0941 3.42 < 0.0941 < 0.0941 0.440 J < 0.0941 1 5,000 TOLUENE 0.359 J < 0.278 18.5 < 0.278 < 0.278 1.88 < 0.278 600 260,000 ETHYLBENZENE 1.81 < 0.137 9.22 < 0.137 < 0.137 0.364 J < 0.137 600 84,500 TOTAL XYLENES 1.83 J < 0.604 51 < 0.604 < 0.604 1.38 J < 0.604 500 85,500 MTBE 559 16.8 42.2 0.155 J 0.573 J < 0.101 < 0.101 20 20,000 NAPHTHALENE < 1 < 1 2.33 J < 1 < 1 < 1 < 1 6 6,000 N-PROPYLBENZENE 0.18 J < 0.0993 2.48 < 0.0993 < 0.0993 0.131 J < 0.0993 70 30,000 1,2,4-TRIMETHYLBENZENE 0.48 J < 0.322 25 < 0.322 < 0.322 0.573 J < 0.322 400 28,500 1,3,5-TRIMETHYLBENZENE < 0.104 < 0.104 7.43 < 0.104 < 0.104 0.233 J < 0.104 400 25,000 DI-ISOPROPYL ETHER 47.3 3.08 11.2 < 0.105 < 0.105 < 0.105 < 0.105 70 70,000 sec-BUTYLBENZENE < 0.125 < 0.125 0.401 J < 0.125 < 0.125 < 0.125 < 0.125 70 8,500 ISOPROPYLBENZENE 0.188 J < 0.105 0.938 J < 0.105 < 0.105 < 0.105 < 0.105 70 25,000 p-ISOPROPYLTOLUENE < 0.12 < 0.12 0.329 J < 0.12 < 0.12 < 0.12 < 0.12 25 11,700 NAPHTHALENE < 0.162 NA NA NA NA NA NA 6 6,000 DI-N-BUTYL PHTHALATE < 0.462 NA NA NA NA NA NA 700 -- DIETHYL PHTHALATE < 0.293 NA NA NA NA NA NA 6,000 -- Me t a l s LEAD < 2.95 NA NA NA NA NA NA 15 15,000 NOTES: Data in ug/l MADEP - Massachusetts Dept. of Environmental Protection EPH - Extractable Petroleum Hydrocarbons VPH - Volatile Petroleum Hydrocarbons VOC - Volatile Organic Compound SVOC - Semi-Volatile Organic Compound MTBE - Methyl Tert Butyl Ether J - Reported value is an estimate B - The same analyte was found in the associated blank NA - Not Analyzed Bold data represents constituents above NCAC 2L Standards Highlighted data represent constituents above GCL Standards MA D E P VO C s SV O C s NCAC 2L GCLVW-1 Electrical Conductivity ORP (µS/cm) MW-1 6.58 0.771 42 3.89 21.79 MW-2 MW-3 4.95 0.353 217 2.26 22.04 MW-4 6.90 1.230 85 2.60 21.43 MW-4R 6.05 0.257 147 3.49 22.10 MW-5 5.20 0.176 229 2.65 21.67 MW-6 5.13 1.00 240 2.51 21.71 MW-7 4.89 0.384 208 1.82 22.19 MW-8 5.35 0.522 170 2.99 21.87 VW-1 6.70 0.389 173 4.13 21.14 µS/cm Microsiemens per centimeter NS Not sampled, (Dry, Not Located, Destroyed, etc…) 10/2 & 10/3/24 Not Sampled - Not Located TABLE 3 FIELD MEASUREMENTS OF THE GROUNDWATER SAMPLES Sam's Mart No. 103 3215 Queen City Drive, Charlotte North Carolina Excel Project No. 2020004 Well Identification Sampling Date (su)(0C) Disolved (ppm) EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com LIST OF FIGURES FIGURE 1 – TOPOGRAPHICAL MAP FIGURE 2 – SITE PLAN FIGURE 3 – WATER TABLE CONTOUR MAP FIGURE 4 - GROUNDWATER CONSTITUENTS MAP PREPARED FOR: PROJ. MGR: DATE: DRAWN BY: PROJ. #: Image Provided By EDR USGS Topographic Maps Boundaries are approximate FIGURE 1 - TOPOGRAPHICAL MAP SAM'S MART 1073215 QUEEN CITY DRIVE, CHARLOTTE, NC Sam's Mart Mike Stanforth 1/23/2020 Mike Stanforth 2020004 EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com LIST OF APPENDICES APPENDIX A – LABORATORY REPORTS & CHAIN OF CUSTODY FORM(S) APPENDIX B – REPORTING TABLES (B-1, B-2, B-6, B-10) EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com APPENDIX A LABORATORY REPORTS & CHAIN OF CUSTODY FORM(S) ANALYTICAL REPORT October 23, 2024 Excel Civil & Environmental Associates Sample Delivery Group:L1786012 Samples Received:10/05/2024 Project Number:2020004 Description:Sam's Mart 103 Report To:Aaron Long 625 Huntsman Court Gastonia, NC 28054 Entire Report Reviewed By: October 23, 2024 [Preliminary Report] Heather J Wagner Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 mydata.pacelabs.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 1 of 40 October 23, 2024 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 1 of 40 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 MW-5 L1786012-01 6 MW-6 L1786012-02 8 MW-3 L1786012-03 10 MW-7 L1786012-04 12 MW-8 L1786012-05 14 MW-4R L1786012-06 16 MW-4 L1786012-07 18 MW-1 L1786012-08 20 VW-1 L1786012-09 22 TRIP BLANK L1786012-10 24 Qc: Quality Control Summary 26 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 26 Gl: Glossary of Terms 38 Al: Accreditations & Locations 39 Sc: Sample Chain of Custody 40 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 2 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 2 of 40 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-5 L1786012-01 GW C DeVane 10/02/24 13:10 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2382605 1 10/16/24 15:13 10/16/24 15:13 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-6 L1786012-02 GW C DeVane 10/02/24 13:45 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2381971 1 10/14/24 23:48 10/14/24 23:48 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2382605 1 10/16/24 15:35 10/16/24 15:35 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-3 L1786012-03 GW C DeVane 10/02/24 14:15 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2381971 1 10/15/24 00:08 10/15/24 00:08 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2382605 1 10/16/24 15:56 10/16/24 15:56 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-7 L1786012-04 GW C DeVane 10/02/24 14:40 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2381971 1 10/15/24 00:28 10/15/24 00:28 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2382605 1 10/16/24 16:17 10/16/24 16:17 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-8 L1786012-05 GW C DeVane 10/02/24 15:20 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2382605 1 10/16/24 16:38 10/16/24 16:38 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4R L1786012-06 GW C DeVane 10/02/24 15:55 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2382605 20 10/16/24 17:42 10/16/24 17:42 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-4 L1786012-07 GW C DeVane 10/03/24 10:00 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2383424 500 10/16/24 21:13 10/16/24 21:13 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-1 L1786012-08 GW C DeVane 10/03/24 10:30 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2383424 20 10/16/24 21:34 10/16/24 21:34 ADM Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 3 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 3 of 40 SAMPLE SUMMARY Collected by Collected date/time Received date/time VW-1 L1786012-09 GW C DeVane 10/03/24 11:10 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2383424 1 10/16/24 20:52 10/16/24 20:52 ADM Mt. Juliet, TN Collected by Collected date/time Received date/time TRIP BLANK L1786012-10 GW C DeVane 10/02/24 00:00 10/05/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2381971 1 10/14/24 19:08 10/14/24 19:08 ACG Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 6200B-2011 WG2382605 1 10/16/24 14:31 10/16/24 14:31 ADM Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 4 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 4 of 40 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Heather J Wagner Project Manager 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 5 of 40 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 5 of 40 SAMPLE RESULTS - 01 L1786012 MW-5 Collected date/time: 10/02/24 13:10 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 10/16/2024 15:13 WG2382605 Acrolein U 2.54 50.0 1 10/16/2024 15:13 WG2382605 Acrylonitrile U 0.671 10.0 1 10/16/2024 15:13 WG2382605 Benzene U 0.0941 1.00 1 10/16/2024 15:13 WG2382605 Bromobenzene U 0.118 1.00 1 10/16/2024 15:13 WG2382605 Bromodichloromethane U 0.136 1.00 1 10/16/2024 15:13 WG2382605 Bromoform U 0.129 1.00 1 10/16/2024 15:13 WG2382605 Bromomethane U 0.605 5.00 1 10/16/2024 15:13 WG2382605 n-Butylbenzene U 0.157 1.00 1 10/16/2024 15:13 WG2382605 sec-Butylbenzene U 0.125 1.00 1 10/16/2024 15:13 WG2382605 tert-Butylbenzene U 0.127 1.00 1 10/16/2024 15:13 WG2382605 Carbon tetrachloride U 0.128 1.00 1 10/16/2024 15:13 WG2382605 Chlorobenzene U 0.116 1.00 1 10/16/2024 15:13 WG2382605 Chlorodibromomethane U 0.140 1.00 1 10/16/2024 15:13 WG2382605 Chloroethane U 0.192 5.00 1 10/16/2024 15:13 WG2382605 Chloroform U J4 0.111 5.00 1 10/16/2024 15:13 WG2382605 Chloromethane U 0.960 2.50 1 10/16/2024 15:13 WG2382605 2-Chlorotoluene U 0.106 1.00 1 10/16/2024 15:13 WG2382605 4-Chlorotoluene U 0.114 1.00 1 10/16/2024 15:13 WG2382605 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 10/16/2024 15:13 WG2382605 1,2-Dibromoethane U 0.126 1.00 1 10/16/2024 15:13 WG2382605 Dibromomethane U 0.122 1.00 1 10/16/2024 15:13 WG2382605 1,2-Dichlorobenzene U 0.107 1.00 1 10/16/2024 15:13 WG2382605 1,3-Dichlorobenzene U 0.110 1.00 1 10/16/2024 15:13 WG2382605 1,4-Dichlorobenzene U 0.120 1.00 1 10/16/2024 15:13 WG2382605 Dichlorodifluoromethane U 0.374 5.00 1 10/16/2024 15:13 WG2382605 1,1-Dichloroethane U 0.100 1.00 1 10/16/2024 15:13 WG2382605 1,2-Dichloroethane U 0.0819 1.00 1 10/16/2024 15:13 WG2382605 1,1-Dichloroethene U 0.188 1.00 1 10/16/2024 15:13 WG2382605 cis-1,2-Dichloroethene U 0.126 1.00 1 10/16/2024 15:13 WG2382605 trans-1,2-Dichloroethene U 0.149 1.00 1 10/16/2024 15:13 WG2382605 1,2-Dichloropropane U 0.149 1.00 1 10/16/2024 15:13 WG2382605 1,1-Dichloropropene U 0.142 1.00 1 10/16/2024 15:13 WG2382605 1,3-Dichloropropane U 0.110 1.00 1 10/16/2024 15:13 WG2382605 2,2-Dichloropropane U 0.161 1.00 1 10/16/2024 15:13 WG2382605 Di-isopropyl ether U 0.105 1.00 1 10/16/2024 15:13 WG2382605 Ethylbenzene U 0.137 1.00 1 10/16/2024 15:13 WG2382605 Hexachloro-1,3-butadiene U 0.337 1.00 1 10/16/2024 15:13 WG2382605 Isopropylbenzene U 0.105 1.00 1 10/16/2024 15:13 WG2382605 p-Isopropyltoluene U 0.120 1.00 1 10/16/2024 15:13 WG2382605 2-Butanone (MEK)U 1.19 10.0 1 10/16/2024 15:13 WG2382605 Methylene Chloride U 0.430 5.00 1 10/16/2024 15:13 WG2382605 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/16/2024 15:13 WG2382605 Methyl tert-butyl ether U 0.101 1.00 1 10/16/2024 15:13 WG2382605 Naphthalene U 1.00 5.00 1 10/16/2024 15:13 WG2382605 n-Propylbenzene U 0.0993 1.00 1 10/16/2024 15:13 WG2382605 Styrene U 0.118 1.00 1 10/16/2024 15:13 WG2382605 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/16/2024 15:13 WG2382605 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/16/2024 15:13 WG2382605 Tetrachloroethene U 0.300 1.00 1 10/16/2024 15:13 WG2382605 Toluene U 0.278 1.00 1 10/16/2024 15:13 WG2382605 1,2,3-Trichlorobenzene U 0.230 1.00 1 10/16/2024 15:13 WG2382605 1,2,4-Trichlorobenzene U 0.481 1.00 1 10/16/2024 15:13 WG2382605 1,1,1-Trichloroethane U 0.149 1.00 1 10/16/2024 15:13 WG2382605 1,1,2-Trichloroethane U 0.158 1.00 1 10/16/2024 15:13 WG2382605 Trichloroethene U J4 0.190 1.00 1 10/16/2024 15:13 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 6 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 6 of 40 SAMPLE RESULTS - 01 L1786012 MW-5 Collected date/time: 10/02/24 13:10 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 10/16/2024 15:13 WG2382605 1,2,3-Trichloropropane U 0.237 2.50 1 10/16/2024 15:13 WG2382605 1,2,4-Trimethylbenzene U 0.322 1.00 1 10/16/2024 15:13 WG2382605 1,3,5-Trimethylbenzene U 0.104 1.00 1 10/16/2024 15:13 WG2382605 Vinyl chloride U 0.234 1.00 1 10/16/2024 15:13 WG2382605 o-Xylene U 0.174 1.00 1 10/16/2024 15:13 WG2382605 m&p-Xylenes U 0.430 2.00 1 10/16/2024 15:13 WG2382605 (S) Toluene-d8 98.4 80.0-120 10/16/2024 15:13 WG2382605 (S) 4-Bromofluorobenzene 99.3 77.0-126 10/16/2024 15:13 WG2382605 (S) 1,2-Dichloroethane-d4 102 70.0-130 10/16/2024 15:13 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 7 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 7 of 40 SAMPLE RESULTS - 02 L1786012 MW-6 Collected date/time: 10/02/24 13:45 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 10/14/2024 23:48 WG2381971 Acrolein U 2.54 50.0 1 10/14/2024 23:48 WG2381971 Acrylonitrile U 0.671 10.0 1 10/14/2024 23:48 WG2381971 Benzene U 0.0941 1.00 1 10/14/2024 23:48 WG2381971 Bromobenzene U 0.118 1.00 1 10/14/2024 23:48 WG2381971 Bromodichloromethane U 0.136 1.00 1 10/14/2024 23:48 WG2381971 Bromoform U 0.129 1.00 1 10/14/2024 23:48 WG2381971 Bromomethane U 0.605 5.00 1 10/14/2024 23:48 WG2381971 n-Butylbenzene U 0.157 1.00 1 10/14/2024 23:48 WG2381971 sec-Butylbenzene U 0.125 1.00 1 10/14/2024 23:48 WG2381971 tert-Butylbenzene U 0.127 1.00 1 10/14/2024 23:48 WG2381971 Carbon tetrachloride U 0.128 1.00 1 10/14/2024 23:48 WG2381971 Chlorobenzene U 0.116 1.00 1 10/14/2024 23:48 WG2381971 Chlorodibromomethane U 0.140 1.00 1 10/14/2024 23:48 WG2381971 Chloroethane U 0.192 5.00 1 10/14/2024 23:48 WG2381971 Chloroform U 0.111 5.00 1 10/14/2024 23:48 WG2381971 Chloromethane U 0.960 2.50 1 10/14/2024 23:48 WG2381971 2-Chlorotoluene U 0.106 1.00 1 10/14/2024 23:48 WG2381971 4-Chlorotoluene U 0.114 1.00 1 10/14/2024 23:48 WG2381971 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 10/14/2024 23:48 WG2381971 1,2-Dibromoethane U 0.126 1.00 1 10/14/2024 23:48 WG2381971 Dibromomethane U 0.122 1.00 1 10/14/2024 23:48 WG2381971 1,2-Dichlorobenzene U 0.107 1.00 1 10/14/2024 23:48 WG2381971 1,3-Dichlorobenzene U 0.110 1.00 1 10/14/2024 23:48 WG2381971 1,4-Dichlorobenzene U 0.120 1.00 1 10/14/2024 23:48 WG2381971 Dichlorodifluoromethane U 0.374 5.00 1 10/14/2024 23:48 WG2381971 1,1-Dichloroethane U 0.100 1.00 1 10/14/2024 23:48 WG2381971 1,2-Dichloroethane U 0.0819 1.00 1 10/14/2024 23:48 WG2381971 1,1-Dichloroethene U 0.188 1.00 1 10/14/2024 23:48 WG2381971 cis-1,2-Dichloroethene U 0.126 1.00 1 10/14/2024 23:48 WG2381971 trans-1,2-Dichloroethene U 0.149 1.00 1 10/14/2024 23:48 WG2381971 1,2-Dichloropropane U 0.149 1.00 1 10/14/2024 23:48 WG2381971 1,1-Dichloropropene U 0.142 1.00 1 10/14/2024 23:48 WG2381971 1,3-Dichloropropane U 0.110 1.00 1 10/14/2024 23:48 WG2381971 2,2-Dichloropropane U 0.161 1.00 1 10/14/2024 23:48 WG2381971 Di-isopropyl ether U 0.105 1.00 1 10/14/2024 23:48 WG2381971 Ethylbenzene U 0.137 1.00 1 10/14/2024 23:48 WG2381971 Hexachloro-1,3-butadiene U 0.337 1.00 1 10/14/2024 23:48 WG2381971 Isopropylbenzene U 0.105 1.00 1 10/14/2024 23:48 WG2381971 p-Isopropyltoluene U 0.120 1.00 1 10/14/2024 23:48 WG2381971 2-Butanone (MEK)U 1.19 10.0 1 10/14/2024 23:48 WG2381971 Methylene Chloride U 0.430 5.00 1 10/14/2024 23:48 WG2381971 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/14/2024 23:48 WG2381971 Methyl tert-butyl ether 0.102 J 0.101 1.00 1 10/14/2024 23:48 WG2381971 Naphthalene U 1.00 5.00 1 10/16/2024 15:35 WG2382605 n-Propylbenzene U 0.0993 1.00 1 10/14/2024 23:48 WG2381971 Styrene U J4 0.118 1.00 1 10/14/2024 23:48 WG2381971 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/14/2024 23:48 WG2381971 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/14/2024 23:48 WG2381971 Tetrachloroethene U 0.300 1.00 1 10/14/2024 23:48 WG2381971 Toluene U 0.278 1.00 1 10/14/2024 23:48 WG2381971 1,2,3-Trichlorobenzene U 0.230 1.00 1 10/14/2024 23:48 WG2381971 1,2,4-Trichlorobenzene U 0.481 1.00 1 10/14/2024 23:48 WG2381971 1,1,1-Trichloroethane U 0.149 1.00 1 10/14/2024 23:48 WG2381971 1,1,2-Trichloroethane U 0.158 1.00 1 10/14/2024 23:48 WG2381971 Trichloroethene U 0.190 1.00 1 10/14/2024 23:48 WG2381971 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 8 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 8 of 40 SAMPLE RESULTS - 02 L1786012 MW-6 Collected date/time: 10/02/24 13:45 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 10/14/2024 23:48 WG2381971 1,2,3-Trichloropropane U 0.237 2.50 1 10/14/2024 23:48 WG2381971 1,2,4-Trimethylbenzene U 0.322 1.00 1 10/14/2024 23:48 WG2381971 1,3,5-Trimethylbenzene U 0.104 1.00 1 10/14/2024 23:48 WG2381971 Vinyl chloride U 0.234 1.00 1 10/14/2024 23:48 WG2381971 o-Xylene U 0.174 1.00 1 10/14/2024 23:48 WG2381971 m&p-Xylenes U 0.430 2.00 1 10/14/2024 23:48 WG2381971 (S) Toluene-d8 105 80.0-120 10/14/2024 23:48 WG2381971 (S) Toluene-d8 102 80.0-120 10/16/2024 15:35 WG2382605 (S) 4-Bromofluorobenzene 90.3 77.0-126 10/14/2024 23:48 WG2381971 (S) 4-Bromofluorobenzene 99.4 77.0-126 10/16/2024 15:35 WG2382605 (S) 1,2-Dichloroethane-d4 97.1 70.0-130 10/14/2024 23:48 WG2381971 (S) 1,2-Dichloroethane-d4 102 70.0-130 10/16/2024 15:35 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 9 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 9 of 40 SAMPLE RESULTS - 03 L1786012 MW-3 Collected date/time: 10/02/24 14:15 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 10/15/2024 00:08 WG2381971 Acrolein U 2.54 50.0 1 10/15/2024 00:08 WG2381971 Acrylonitrile U 0.671 10.0 1 10/15/2024 00:08 WG2381971 Benzene U 0.0941 1.00 1 10/15/2024 00:08 WG2381971 Bromobenzene U 0.118 1.00 1 10/15/2024 00:08 WG2381971 Bromodichloromethane U 0.136 1.00 1 10/15/2024 00:08 WG2381971 Bromoform U 0.129 1.00 1 10/15/2024 00:08 WG2381971 Bromomethane U 0.605 5.00 1 10/15/2024 00:08 WG2381971 n-Butylbenzene U 0.157 1.00 1 10/15/2024 00:08 WG2381971 sec-Butylbenzene U 0.125 1.00 1 10/15/2024 00:08 WG2381971 tert-Butylbenzene U 0.127 1.00 1 10/15/2024 00:08 WG2381971 Carbon tetrachloride U 0.128 1.00 1 10/15/2024 00:08 WG2381971 Chlorobenzene U 0.116 1.00 1 10/15/2024 00:08 WG2381971 Chlorodibromomethane U 0.140 1.00 1 10/15/2024 00:08 WG2381971 Chloroethane U 0.192 5.00 1 10/15/2024 00:08 WG2381971 Chloroform U 0.111 5.00 1 10/15/2024 00:08 WG2381971 Chloromethane U 0.960 2.50 1 10/15/2024 00:08 WG2381971 2-Chlorotoluene U 0.106 1.00 1 10/15/2024 00:08 WG2381971 4-Chlorotoluene U 0.114 1.00 1 10/15/2024 00:08 WG2381971 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 10/15/2024 00:08 WG2381971 1,2-Dibromoethane U 0.126 1.00 1 10/15/2024 00:08 WG2381971 Dibromomethane U 0.122 1.00 1 10/15/2024 00:08 WG2381971 1,2-Dichlorobenzene U 0.107 1.00 1 10/15/2024 00:08 WG2381971 1,3-Dichlorobenzene U 0.110 1.00 1 10/15/2024 00:08 WG2381971 1,4-Dichlorobenzene U 0.120 1.00 1 10/15/2024 00:08 WG2381971 Dichlorodifluoromethane U 0.374 5.00 1 10/15/2024 00:08 WG2381971 1,1-Dichloroethane U 0.100 1.00 1 10/15/2024 00:08 WG2381971 1,2-Dichloroethane U 0.0819 1.00 1 10/15/2024 00:08 WG2381971 1,1-Dichloroethene U 0.188 1.00 1 10/15/2024 00:08 WG2381971 cis-1,2-Dichloroethene U 0.126 1.00 1 10/15/2024 00:08 WG2381971 trans-1,2-Dichloroethene U 0.149 1.00 1 10/15/2024 00:08 WG2381971 1,2-Dichloropropane U 0.149 1.00 1 10/15/2024 00:08 WG2381971 1,1-Dichloropropene U 0.142 1.00 1 10/15/2024 00:08 WG2381971 1,3-Dichloropropane U 0.110 1.00 1 10/15/2024 00:08 WG2381971 2,2-Dichloropropane U 0.161 1.00 1 10/15/2024 00:08 WG2381971 Di-isopropyl ether 8.43 0.105 1.00 1 10/15/2024 00:08 WG2381971 Ethylbenzene U 0.137 1.00 1 10/15/2024 00:08 WG2381971 Hexachloro-1,3-butadiene U 0.337 1.00 1 10/15/2024 00:08 WG2381971 Isopropylbenzene U 0.105 1.00 1 10/15/2024 00:08 WG2381971 p-Isopropyltoluene U 0.120 1.00 1 10/15/2024 00:08 WG2381971 2-Butanone (MEK)U 1.19 10.0 1 10/15/2024 00:08 WG2381971 Methylene Chloride U 0.430 5.00 1 10/15/2024 00:08 WG2381971 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/15/2024 00:08 WG2381971 Methyl tert-butyl ether 172 0.101 1.00 1 10/15/2024 00:08 WG2381971 Naphthalene U 1.00 5.00 1 10/16/2024 15:56 WG2382605 n-Propylbenzene U 0.0993 1.00 1 10/15/2024 00:08 WG2381971 Styrene U J4 0.118 1.00 1 10/15/2024 00:08 WG2381971 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/15/2024 00:08 WG2381971 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/15/2024 00:08 WG2381971 Tetrachloroethene U 0.300 1.00 1 10/15/2024 00:08 WG2381971 Toluene U 0.278 1.00 1 10/15/2024 00:08 WG2381971 1,2,3-Trichlorobenzene U 0.230 1.00 1 10/15/2024 00:08 WG2381971 1,2,4-Trichlorobenzene U 0.481 1.00 1 10/15/2024 00:08 WG2381971 1,1,1-Trichloroethane U 0.149 1.00 1 10/15/2024 00:08 WG2381971 1,1,2-Trichloroethane U 0.158 1.00 1 10/15/2024 00:08 WG2381971 Trichloroethene U 0.190 1.00 1 10/15/2024 00:08 WG2381971 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 10 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 10 of 40 SAMPLE RESULTS - 03 L1786012 MW-3 Collected date/time: 10/02/24 14:15 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 10/15/2024 00:08 WG2381971 1,2,3-Trichloropropane U 0.237 2.50 1 10/15/2024 00:08 WG2381971 1,2,4-Trimethylbenzene U 0.322 1.00 1 10/15/2024 00:08 WG2381971 1,3,5-Trimethylbenzene U 0.104 1.00 1 10/15/2024 00:08 WG2381971 Vinyl chloride U 0.234 1.00 1 10/15/2024 00:08 WG2381971 o-Xylene U 0.174 1.00 1 10/15/2024 00:08 WG2381971 m&p-Xylenes U 0.430 2.00 1 10/15/2024 00:08 WG2381971 (S) Toluene-d8 104 80.0-120 10/15/2024 00:08 WG2381971 (S) Toluene-d8 101 80.0-120 10/16/2024 15:56 WG2382605 (S) 4-Bromofluorobenzene 95.4 77.0-126 10/15/2024 00:08 WG2381971 (S) 4-Bromofluorobenzene 101 77.0-126 10/16/2024 15:56 WG2382605 (S) 1,2-Dichloroethane-d4 95.3 70.0-130 10/15/2024 00:08 WG2381971 (S) 1,2-Dichloroethane-d4 101 70.0-130 10/16/2024 15:56 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 11 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 11 of 40 SAMPLE RESULTS - 04 L1786012 MW-7 Collected date/time: 10/02/24 14:40 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 10/15/2024 00:28 WG2381971 Acrolein U 2.54 50.0 1 10/15/2024 00:28 WG2381971 Acrylonitrile U 0.671 10.0 1 10/15/2024 00:28 WG2381971 Benzene 0.358 J 0.0941 1.00 1 10/15/2024 00:28 WG2381971 Bromobenzene U 0.118 1.00 1 10/15/2024 00:28 WG2381971 Bromodichloromethane U 0.136 1.00 1 10/15/2024 00:28 WG2381971 Bromoform U 0.129 1.00 1 10/15/2024 00:28 WG2381971 Bromomethane U 0.605 5.00 1 10/15/2024 00:28 WG2381971 n-Butylbenzene U 0.157 1.00 1 10/15/2024 00:28 WG2381971 sec-Butylbenzene U 0.125 1.00 1 10/15/2024 00:28 WG2381971 tert-Butylbenzene U 0.127 1.00 1 10/15/2024 00:28 WG2381971 Carbon tetrachloride U 0.128 1.00 1 10/15/2024 00:28 WG2381971 Chlorobenzene U 0.116 1.00 1 10/15/2024 00:28 WG2381971 Chlorodibromomethane U 0.140 1.00 1 10/15/2024 00:28 WG2381971 Chloroethane U 0.192 5.00 1 10/15/2024 00:28 WG2381971 Chloroform U 0.111 5.00 1 10/15/2024 00:28 WG2381971 Chloromethane U 0.960 2.50 1 10/15/2024 00:28 WG2381971 2-Chlorotoluene U 0.106 1.00 1 10/15/2024 00:28 WG2381971 4-Chlorotoluene U 0.114 1.00 1 10/15/2024 00:28 WG2381971 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 10/15/2024 00:28 WG2381971 1,2-Dibromoethane U 0.126 1.00 1 10/15/2024 00:28 WG2381971 Dibromomethane U 0.122 1.00 1 10/15/2024 00:28 WG2381971 1,2-Dichlorobenzene U 0.107 1.00 1 10/15/2024 00:28 WG2381971 1,3-Dichlorobenzene U 0.110 1.00 1 10/15/2024 00:28 WG2381971 1,4-Dichlorobenzene U 0.120 1.00 1 10/15/2024 00:28 WG2381971 Dichlorodifluoromethane U 0.374 5.00 1 10/15/2024 00:28 WG2381971 1,1-Dichloroethane U 0.100 1.00 1 10/15/2024 00:28 WG2381971 1,2-Dichloroethane U 0.0819 1.00 1 10/15/2024 00:28 WG2381971 1,1-Dichloroethene U 0.188 1.00 1 10/15/2024 00:28 WG2381971 cis-1,2-Dichloroethene U 0.126 1.00 1 10/15/2024 00:28 WG2381971 trans-1,2-Dichloroethene U 0.149 1.00 1 10/15/2024 00:28 WG2381971 1,2-Dichloropropane U 0.149 1.00 1 10/15/2024 00:28 WG2381971 1,1-Dichloropropene U 0.142 1.00 1 10/15/2024 00:28 WG2381971 1,3-Dichloropropane U 0.110 1.00 1 10/15/2024 00:28 WG2381971 2,2-Dichloropropane U 0.161 1.00 1 10/15/2024 00:28 WG2381971 Di-isopropyl ether U 0.105 1.00 1 10/15/2024 00:28 WG2381971 Ethylbenzene U 0.137 1.00 1 10/15/2024 00:28 WG2381971 Hexachloro-1,3-butadiene U 0.337 1.00 1 10/15/2024 00:28 WG2381971 Isopropylbenzene U 0.105 1.00 1 10/15/2024 00:28 WG2381971 p-Isopropyltoluene U 0.120 1.00 1 10/15/2024 00:28 WG2381971 2-Butanone (MEK)U 1.19 10.0 1 10/15/2024 00:28 WG2381971 Methylene Chloride U 0.430 5.00 1 10/15/2024 00:28 WG2381971 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/15/2024 00:28 WG2381971 Methyl tert-butyl ether 0.104 J 0.101 1.00 1 10/15/2024 00:28 WG2381971 Naphthalene U 1.00 5.00 1 10/16/2024 16:17 WG2382605 n-Propylbenzene U 0.0993 1.00 1 10/15/2024 00:28 WG2381971 Styrene U J4 0.118 1.00 1 10/15/2024 00:28 WG2381971 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/15/2024 00:28 WG2381971 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/15/2024 00:28 WG2381971 Tetrachloroethene U 0.300 1.00 1 10/15/2024 00:28 WG2381971 Toluene U 0.278 1.00 1 10/15/2024 00:28 WG2381971 1,2,3-Trichlorobenzene U 0.230 1.00 1 10/15/2024 00:28 WG2381971 1,2,4-Trichlorobenzene U 0.481 1.00 1 10/15/2024 00:28 WG2381971 1,1,1-Trichloroethane U 0.149 1.00 1 10/15/2024 00:28 WG2381971 1,1,2-Trichloroethane U 0.158 1.00 1 10/15/2024 00:28 WG2381971 Trichloroethene U 0.190 1.00 1 10/15/2024 00:28 WG2381971 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 12 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 12 of 40 SAMPLE RESULTS - 04 L1786012 MW-7 Collected date/time: 10/02/24 14:40 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 10/15/2024 00:28 WG2381971 1,2,3-Trichloropropane U 0.237 2.50 1 10/15/2024 00:28 WG2381971 1,2,4-Trimethylbenzene U 0.322 1.00 1 10/15/2024 00:28 WG2381971 1,3,5-Trimethylbenzene U 0.104 1.00 1 10/15/2024 00:28 WG2381971 Vinyl chloride U 0.234 1.00 1 10/15/2024 00:28 WG2381971 o-Xylene U 0.174 1.00 1 10/15/2024 00:28 WG2381971 m&p-Xylenes U 0.430 2.00 1 10/15/2024 00:28 WG2381971 (S) Toluene-d8 102 80.0-120 10/15/2024 00:28 WG2381971 (S) Toluene-d8 101 80.0-120 10/16/2024 16:17 WG2382605 (S) 4-Bromofluorobenzene 86.0 77.0-126 10/15/2024 00:28 WG2381971 (S) 4-Bromofluorobenzene 100 77.0-126 10/16/2024 16:17 WG2382605 (S) 1,2-Dichloroethane-d4 98.6 70.0-130 10/15/2024 00:28 WG2381971 (S) 1,2-Dichloroethane-d4 101 70.0-130 10/16/2024 16:17 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 13 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 13 of 40 SAMPLE RESULTS - 05 L1786012 MW-8 Collected date/time: 10/02/24 15:20 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone 42.2 J 11.3 50.0 1 10/16/2024 16:38 WG2382605 Acrolein U 2.54 50.0 1 10/16/2024 16:38 WG2382605 Acrylonitrile U 0.671 10.0 1 10/16/2024 16:38 WG2382605 Benzene 1.58 0.0941 1.00 1 10/16/2024 16:38 WG2382605 Bromobenzene U 0.118 1.00 1 10/16/2024 16:38 WG2382605 Bromodichloromethane U 0.136 1.00 1 10/16/2024 16:38 WG2382605 Bromoform U 0.129 1.00 1 10/16/2024 16:38 WG2382605 Bromomethane U 0.605 5.00 1 10/16/2024 16:38 WG2382605 n-Butylbenzene U 0.157 1.00 1 10/16/2024 16:38 WG2382605 sec-Butylbenzene U 0.125 1.00 1 10/16/2024 16:38 WG2382605 tert-Butylbenzene U 0.127 1.00 1 10/16/2024 16:38 WG2382605 Carbon tetrachloride U 0.128 1.00 1 10/16/2024 16:38 WG2382605 Chlorobenzene U 0.116 1.00 1 10/16/2024 16:38 WG2382605 Chlorodibromomethane U 0.140 1.00 1 10/16/2024 16:38 WG2382605 Chloroethane U 0.192 5.00 1 10/16/2024 16:38 WG2382605 Chloroform U J4 0.111 5.00 1 10/16/2024 16:38 WG2382605 Chloromethane U 0.960 2.50 1 10/16/2024 16:38 WG2382605 2-Chlorotoluene U 0.106 1.00 1 10/16/2024 16:38 WG2382605 4-Chlorotoluene U 0.114 1.00 1 10/16/2024 16:38 WG2382605 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 10/16/2024 16:38 WG2382605 1,2-Dibromoethane U 0.126 1.00 1 10/16/2024 16:38 WG2382605 Dibromomethane U 0.122 1.00 1 10/16/2024 16:38 WG2382605 1,2-Dichlorobenzene U 0.107 1.00 1 10/16/2024 16:38 WG2382605 1,3-Dichlorobenzene U 0.110 1.00 1 10/16/2024 16:38 WG2382605 1,4-Dichlorobenzene U 0.120 1.00 1 10/16/2024 16:38 WG2382605 Dichlorodifluoromethane U 0.374 5.00 1 10/16/2024 16:38 WG2382605 1,1-Dichloroethane U 0.100 1.00 1 10/16/2024 16:38 WG2382605 1,2-Dichloroethane U 0.0819 1.00 1 10/16/2024 16:38 WG2382605 1,1-Dichloroethene U 0.188 1.00 1 10/16/2024 16:38 WG2382605 cis-1,2-Dichloroethene U 0.126 1.00 1 10/16/2024 16:38 WG2382605 trans-1,2-Dichloroethene U 0.149 1.00 1 10/16/2024 16:38 WG2382605 1,2-Dichloropropane U 0.149 1.00 1 10/16/2024 16:38 WG2382605 1,1-Dichloropropene U 0.142 1.00 1 10/16/2024 16:38 WG2382605 1,3-Dichloropropane U 0.110 1.00 1 10/16/2024 16:38 WG2382605 2,2-Dichloropropane U 0.161 1.00 1 10/16/2024 16:38 WG2382605 Di-isopropyl ether U 0.105 1.00 1 10/16/2024 16:38 WG2382605 Ethylbenzene U 0.137 1.00 1 10/16/2024 16:38 WG2382605 Hexachloro-1,3-butadiene U 0.337 1.00 1 10/16/2024 16:38 WG2382605 Isopropylbenzene 0.126 J 0.105 1.00 1 10/16/2024 16:38 WG2382605 p-Isopropyltoluene U 0.120 1.00 1 10/16/2024 16:38 WG2382605 2-Butanone (MEK)U 1.19 10.0 1 10/16/2024 16:38 WG2382605 Methylene Chloride U 0.430 5.00 1 10/16/2024 16:38 WG2382605 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/16/2024 16:38 WG2382605 Methyl tert-butyl ether U 0.101 1.00 1 10/16/2024 16:38 WG2382605 Naphthalene U 1.00 5.00 1 10/16/2024 16:38 WG2382605 n-Propylbenzene 0.136 J 0.0993 1.00 1 10/16/2024 16:38 WG2382605 Styrene U 0.118 1.00 1 10/16/2024 16:38 WG2382605 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/16/2024 16:38 WG2382605 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/16/2024 16:38 WG2382605 Tetrachloroethene U 0.300 1.00 1 10/16/2024 16:38 WG2382605 Toluene 1.48 0.278 1.00 1 10/16/2024 16:38 WG2382605 1,2,3-Trichlorobenzene U 0.230 1.00 1 10/16/2024 16:38 WG2382605 1,2,4-Trichlorobenzene U 0.481 1.00 1 10/16/2024 16:38 WG2382605 1,1,1-Trichloroethane U 0.149 1.00 1 10/16/2024 16:38 WG2382605 1,1,2-Trichloroethane U 0.158 1.00 1 10/16/2024 16:38 WG2382605 Trichloroethene U J4 0.190 1.00 1 10/16/2024 16:38 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 14 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 14 of 40 SAMPLE RESULTS - 05 L1786012 MW-8 Collected date/time: 10/02/24 15:20 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 10/16/2024 16:38 WG2382605 1,2,3-Trichloropropane U 0.237 2.50 1 10/16/2024 16:38 WG2382605 1,2,4-Trimethylbenzene U 0.322 1.00 1 10/16/2024 16:38 WG2382605 1,3,5-Trimethylbenzene U 0.104 1.00 1 10/16/2024 16:38 WG2382605 Vinyl chloride U 0.234 1.00 1 10/16/2024 16:38 WG2382605 o-Xylene U 0.174 1.00 1 10/16/2024 16:38 WG2382605 m&p-Xylenes U 0.430 2.00 1 10/16/2024 16:38 WG2382605 (S) Toluene-d8 101 80.0-120 10/16/2024 16:38 WG2382605 (S) 4-Bromofluorobenzene 101 77.0-126 10/16/2024 16:38 WG2382605 (S) 1,2-Dichloroethane-d4 97.4 70.0-130 10/16/2024 16:38 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 15 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 15 of 40 SAMPLE RESULTS - 06 L1786012 MW-4R Collected date/time: 10/02/24 15:55 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 226 1000 20 10/16/2024 17:42 WG2382605 Acrolein U 50.8 1000 20 10/16/2024 17:42 WG2382605 Acrylonitrile U 13.4 200 20 10/16/2024 17:42 WG2382605 Benzene 522 1.88 20.0 20 10/16/2024 17:42 WG2382605 Bromobenzene U 2.36 20.0 20 10/16/2024 17:42 WG2382605 Bromodichloromethane U 2.72 20.0 20 10/16/2024 17:42 WG2382605 Bromoform U 2.58 20.0 20 10/16/2024 17:42 WG2382605 Bromomethane U 12.1 100 20 10/16/2024 17:42 WG2382605 n-Butylbenzene U 3.14 20.0 20 10/16/2024 17:42 WG2382605 sec-Butylbenzene U 2.50 20.0 20 10/16/2024 17:42 WG2382605 tert-Butylbenzene U 2.54 20.0 20 10/16/2024 17:42 WG2382605 Carbon tetrachloride U 2.56 20.0 20 10/16/2024 17:42 WG2382605 Chlorobenzene U 2.32 20.0 20 10/16/2024 17:42 WG2382605 Chlorodibromomethane U 2.80 20.0 20 10/16/2024 17:42 WG2382605 Chloroethane U 3.84 100 20 10/16/2024 17:42 WG2382605 Chloroform U J4 2.22 100 20 10/16/2024 17:42 WG2382605 Chloromethane U 19.2 50.0 20 10/16/2024 17:42 WG2382605 2-Chlorotoluene U 2.12 20.0 20 10/16/2024 17:42 WG2382605 4-Chlorotoluene U 2.28 20.0 20 10/16/2024 17:42 WG2382605 1,2-Dibromo-3-Chloropropane U 5.52 100 20 10/16/2024 17:42 WG2382605 1,2-Dibromoethane U 2.52 20.0 20 10/16/2024 17:42 WG2382605 Dibromomethane U 2.44 20.0 20 10/16/2024 17:42 WG2382605 1,2-Dichlorobenzene U 2.14 20.0 20 10/16/2024 17:42 WG2382605 1,3-Dichlorobenzene U 2.20 20.0 20 10/16/2024 17:42 WG2382605 1,4-Dichlorobenzene U 2.40 20.0 20 10/16/2024 17:42 WG2382605 Dichlorodifluoromethane U 7.48 100 20 10/16/2024 17:42 WG2382605 1,1-Dichloroethane U 2.00 20.0 20 10/16/2024 17:42 WG2382605 1,2-Dichloroethane U 1.64 20.0 20 10/16/2024 17:42 WG2382605 1,1-Dichloroethene U 3.76 20.0 20 10/16/2024 17:42 WG2382605 cis-1,2-Dichloroethene U 2.52 20.0 20 10/16/2024 17:42 WG2382605 trans-1,2-Dichloroethene U 2.98 20.0 20 10/16/2024 17:42 WG2382605 1,2-Dichloropropane U 2.98 20.0 20 10/16/2024 17:42 WG2382605 1,1-Dichloropropene U 2.84 20.0 20 10/16/2024 17:42 WG2382605 1,3-Dichloropropane U 2.20 20.0 20 10/16/2024 17:42 WG2382605 2,2-Dichloropropane U 3.22 20.0 20 10/16/2024 17:42 WG2382605 Di-isopropyl ether 29.7 2.10 20.0 20 10/16/2024 17:42 WG2382605 Ethylbenzene 204 2.74 20.0 20 10/16/2024 17:42 WG2382605 Hexachloro-1,3-butadiene U 6.74 20.0 20 10/16/2024 17:42 WG2382605 Isopropylbenzene 7.86 J 2.10 20.0 20 10/16/2024 17:42 WG2382605 p-Isopropyltoluene U 2.40 20.0 20 10/16/2024 17:42 WG2382605 2-Butanone (MEK)U 23.8 200 20 10/16/2024 17:42 WG2382605 Methylene Chloride U 8.60 100 20 10/16/2024 17:42 WG2382605 4-Methyl-2-pentanone (MIBK)U 9.56 200 20 10/16/2024 17:42 WG2382605 Methyl tert-butyl ether 138 2.02 20.0 20 10/16/2024 17:42 WG2382605 Naphthalene 31.8 J 20.0 100 20 10/16/2024 17:42 WG2382605 n-Propylbenzene 20.1 1.99 20.0 20 10/16/2024 17:42 WG2382605 Styrene U 2.36 20.0 20 10/16/2024 17:42 WG2382605 1,1,1,2-Tetrachloroethane U 2.94 20.0 20 10/16/2024 17:42 WG2382605 1,1,2,2-Tetrachloroethane U 2.66 20.0 20 10/16/2024 17:42 WG2382605 Tetrachloroethene U 6.00 20.0 20 10/16/2024 17:42 WG2382605 Toluene 852 5.56 20.0 20 10/16/2024 17:42 WG2382605 1,2,3-Trichlorobenzene U 4.60 20.0 20 10/16/2024 17:42 WG2382605 1,2,4-Trichlorobenzene U 9.62 20.0 20 10/16/2024 17:42 WG2382605 1,1,1-Trichloroethane U 2.98 20.0 20 10/16/2024 17:42 WG2382605 1,1,2-Trichloroethane U 3.16 20.0 20 10/16/2024 17:42 WG2382605 Trichloroethene U J4 3.80 20.0 20 10/16/2024 17:42 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 16 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 16 of 40 SAMPLE RESULTS - 06 L1786012 MW-4R Collected date/time: 10/02/24 15:55 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 3.20 100 20 10/16/2024 17:42 WG2382605 1,2,3-Trichloropropane U 4.74 50.0 20 10/16/2024 17:42 WG2382605 1,2,4-Trimethylbenzene 205 6.44 20.0 20 10/16/2024 17:42 WG2382605 1,3,5-Trimethylbenzene 53.4 2.08 20.0 20 10/16/2024 17:42 WG2382605 Vinyl chloride U 4.68 20.0 20 10/16/2024 17:42 WG2382605 o-Xylene 246 3.48 20.0 20 10/16/2024 17:42 WG2382605 m&p-Xylenes 681 8.60 40.0 20 10/16/2024 17:42 WG2382605 (S) Toluene-d8 102 80.0-120 10/16/2024 17:42 WG2382605 (S) 4-Bromofluorobenzene 103 77.0-126 10/16/2024 17:42 WG2382605 (S) 1,2-Dichloroethane-d4 95.4 70.0-130 10/16/2024 17:42 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 17 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 17 of 40 SAMPLE RESULTS - 07 L1786012 MW-4 Collected date/time: 10/03/24 10:00 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 5650 25000 500 10/16/2024 21:13 WG2383424 Acrolein U 1270 25000 500 10/16/2024 21:13 WG2383424 Acrylonitrile U 336 5000 500 10/16/2024 21:13 WG2383424 Benzene 8440 47.1 500 500 10/16/2024 21:13 WG2383424 Bromobenzene U 59.0 500 500 10/16/2024 21:13 WG2383424 Bromodichloromethane U 68.0 500 500 10/16/2024 21:13 WG2383424 Bromoform U 64.5 500 500 10/16/2024 21:13 WG2383424 Bromomethane U 303 2500 500 10/16/2024 21:13 WG2383424 n-Butylbenzene U 78.5 500 500 10/16/2024 21:13 WG2383424 sec-Butylbenzene U 62.5 500 500 10/16/2024 21:13 WG2383424 tert-Butylbenzene U 63.5 500 500 10/16/2024 21:13 WG2383424 Carbon tetrachloride U 64.0 500 500 10/16/2024 21:13 WG2383424 Chlorobenzene U 58.0 500 500 10/16/2024 21:13 WG2383424 Chlorodibromomethane U 70.0 500 500 10/16/2024 21:13 WG2383424 Chloroethane U 96.0 2500 500 10/16/2024 21:13 WG2383424 Chloroform U J4 55.5 2500 500 10/16/2024 21:13 WG2383424 Chloromethane U 480 1250 500 10/16/2024 21:13 WG2383424 2-Chlorotoluene U 53.0 500 500 10/16/2024 21:13 WG2383424 4-Chlorotoluene U 57.0 500 500 10/16/2024 21:13 WG2383424 1,2-Dibromo-3-Chloropropane U 138 2500 500 10/16/2024 21:13 WG2383424 1,2-Dibromoethane U 63.0 500 500 10/16/2024 21:13 WG2383424 Dibromomethane U 61.0 500 500 10/16/2024 21:13 WG2383424 1,2-Dichlorobenzene U 53.5 500 500 10/16/2024 21:13 WG2383424 1,3-Dichlorobenzene U 55.0 500 500 10/16/2024 21:13 WG2383424 1,4-Dichlorobenzene U 60.0 500 500 10/16/2024 21:13 WG2383424 Dichlorodifluoromethane U 187 2500 500 10/16/2024 21:13 WG2383424 1,1-Dichloroethane U 50.0 500 500 10/16/2024 21:13 WG2383424 1,2-Dichloroethane U 40.9 500 500 10/16/2024 21:13 WG2383424 1,1-Dichloroethene U 94.0 500 500 10/16/2024 21:13 WG2383424 cis-1,2-Dichloroethene U 63.0 500 500 10/16/2024 21:13 WG2383424 trans-1,2-Dichloroethene U 74.5 500 500 10/16/2024 21:13 WG2383424 1,2-Dichloropropane U 74.5 500 500 10/16/2024 21:13 WG2383424 1,1-Dichloropropene U 71.0 500 500 10/16/2024 21:13 WG2383424 1,3-Dichloropropane U 55.0 500 500 10/16/2024 21:13 WG2383424 2,2-Dichloropropane U 80.5 500 500 10/16/2024 21:13 WG2383424 Di-isopropyl ether 204 J 52.5 500 500 10/16/2024 21:13 WG2383424 Ethylbenzene 2520 68.5 500 500 10/16/2024 21:13 WG2383424 Hexachloro-1,3-butadiene U 169 500 500 10/16/2024 21:13 WG2383424 Isopropylbenzene 83.6 J 52.5 500 500 10/16/2024 21:13 WG2383424 p-Isopropyltoluene U 60.0 500 500 10/16/2024 21:13 WG2383424 2-Butanone (MEK)U 595 5000 500 10/16/2024 21:13 WG2383424 Methylene Chloride U 215 2500 500 10/16/2024 21:13 WG2383424 4-Methyl-2-pentanone (MIBK)U 239 5000 500 10/16/2024 21:13 WG2383424 Methyl tert-butyl ether 305 J 50.5 500 500 10/16/2024 21:13 WG2383424 Naphthalene U 500 2500 500 10/16/2024 21:13 WG2383424 n-Propylbenzene 194 J 49.7 500 500 10/16/2024 21:13 WG2383424 Styrene U 59.0 500 500 10/16/2024 21:13 WG2383424 1,1,1,2-Tetrachloroethane U 73.5 500 500 10/16/2024 21:13 WG2383424 1,1,2,2-Tetrachloroethane U 66.5 500 500 10/16/2024 21:13 WG2383424 Tetrachloroethene U 150 500 500 10/16/2024 21:13 WG2383424 Toluene 22100 139 500 500 10/16/2024 21:13 WG2383424 1,2,3-Trichlorobenzene U 115 500 500 10/16/2024 21:13 WG2383424 1,2,4-Trichlorobenzene U 241 500 500 10/16/2024 21:13 WG2383424 1,1,1-Trichloroethane U 74.5 500 500 10/16/2024 21:13 WG2383424 1,1,2-Trichloroethane U 79.0 500 500 10/16/2024 21:13 WG2383424 Trichloroethene U J4 95.0 500 500 10/16/2024 21:13 WG2383424 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 18 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 18 of 40 SAMPLE RESULTS - 07 L1786012 MW-4 Collected date/time: 10/03/24 10:00 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 80.0 2500 500 10/16/2024 21:13 WG2383424 1,2,3-Trichloropropane U 119 1250 500 10/16/2024 21:13 WG2383424 1,2,4-Trimethylbenzene 1590 161 500 500 10/16/2024 21:13 WG2383424 1,3,5-Trimethylbenzene 413 J 52.0 500 500 10/16/2024 21:13 WG2383424 Vinyl chloride U 117 500 500 10/16/2024 21:13 WG2383424 o-Xylene 3960 87.0 500 500 10/16/2024 21:13 WG2383424 m&p-Xylenes 5840 215 1000 500 10/16/2024 21:13 WG2383424 (S) Toluene-d8 101 80.0-120 10/16/2024 21:13 WG2383424 (S) 4-Bromofluorobenzene 99.7 77.0-126 10/16/2024 21:13 WG2383424 (S) 1,2-Dichloroethane-d4 97.8 70.0-130 10/16/2024 21:13 WG2383424 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 19 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 19 of 40 SAMPLE RESULTS - 08 L1786012 MW-1 Collected date/time: 10/03/24 10:30 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 226 1000 20 10/16/2024 21:34 WG2383424 Acrolein U 50.8 1000 20 10/16/2024 21:34 WG2383424 Acrylonitrile U 13.4 200 20 10/16/2024 21:34 WG2383424 Benzene 124 1.88 20.0 20 10/16/2024 21:34 WG2383424 Bromobenzene U 2.36 20.0 20 10/16/2024 21:34 WG2383424 Bromodichloromethane U 2.72 20.0 20 10/16/2024 21:34 WG2383424 Bromoform U 2.58 20.0 20 10/16/2024 21:34 WG2383424 Bromomethane U 12.1 100 20 10/16/2024 21:34 WG2383424 n-Butylbenzene U 3.14 20.0 20 10/16/2024 21:34 WG2383424 sec-Butylbenzene U 2.50 20.0 20 10/16/2024 21:34 WG2383424 tert-Butylbenzene U 2.54 20.0 20 10/16/2024 21:34 WG2383424 Carbon tetrachloride U 2.56 20.0 20 10/16/2024 21:34 WG2383424 Chlorobenzene U 2.32 20.0 20 10/16/2024 21:34 WG2383424 Chlorodibromomethane U 2.80 20.0 20 10/16/2024 21:34 WG2383424 Chloroethane U 3.84 100 20 10/16/2024 21:34 WG2383424 Chloroform U J4 2.22 100 20 10/16/2024 21:34 WG2383424 Chloromethane U 19.2 50.0 20 10/16/2024 21:34 WG2383424 2-Chlorotoluene U 2.12 20.0 20 10/16/2024 21:34 WG2383424 4-Chlorotoluene U 2.28 20.0 20 10/16/2024 21:34 WG2383424 1,2-Dibromo-3-Chloropropane U 5.52 100 20 10/16/2024 21:34 WG2383424 1,2-Dibromoethane U 2.52 20.0 20 10/16/2024 21:34 WG2383424 Dibromomethane U 2.44 20.0 20 10/16/2024 21:34 WG2383424 1,2-Dichlorobenzene U 2.14 20.0 20 10/16/2024 21:34 WG2383424 1,3-Dichlorobenzene U 2.20 20.0 20 10/16/2024 21:34 WG2383424 1,4-Dichlorobenzene U 2.40 20.0 20 10/16/2024 21:34 WG2383424 Dichlorodifluoromethane U 7.48 100 20 10/16/2024 21:34 WG2383424 1,1-Dichloroethane U 2.00 20.0 20 10/16/2024 21:34 WG2383424 1,2-Dichloroethane U 1.64 20.0 20 10/16/2024 21:34 WG2383424 1,1-Dichloroethene U 3.76 20.0 20 10/16/2024 21:34 WG2383424 cis-1,2-Dichloroethene U 2.52 20.0 20 10/16/2024 21:34 WG2383424 trans-1,2-Dichloroethene U 2.98 20.0 20 10/16/2024 21:34 WG2383424 1,2-Dichloropropane U 2.98 20.0 20 10/16/2024 21:34 WG2383424 1,1-Dichloropropene U 2.84 20.0 20 10/16/2024 21:34 WG2383424 1,3-Dichloropropane U 2.20 20.0 20 10/16/2024 21:34 WG2383424 2,2-Dichloropropane U 3.22 20.0 20 10/16/2024 21:34 WG2383424 Di-isopropyl ether 162 2.10 20.0 20 10/16/2024 21:34 WG2383424 Ethylbenzene 15.0 J 2.74 20.0 20 10/16/2024 21:34 WG2383424 Hexachloro-1,3-butadiene U 6.74 20.0 20 10/16/2024 21:34 WG2383424 Isopropylbenzene 2.46 J 2.10 20.0 20 10/16/2024 21:34 WG2383424 p-Isopropyltoluene U 2.40 20.0 20 10/16/2024 21:34 WG2383424 2-Butanone (MEK)U 23.8 200 20 10/16/2024 21:34 WG2383424 Methylene Chloride U 8.60 100 20 10/16/2024 21:34 WG2383424 4-Methyl-2-pentanone (MIBK)U 9.56 200 20 10/16/2024 21:34 WG2383424 Methyl tert-butyl ether 889 2.02 20.0 20 10/16/2024 21:34 WG2383424 Naphthalene U 20.0 100 20 10/16/2024 21:34 WG2383424 n-Propylbenzene 2.65 J 1.99 20.0 20 10/16/2024 21:34 WG2383424 Styrene U 2.36 20.0 20 10/16/2024 21:34 WG2383424 1,1,1,2-Tetrachloroethane U 2.94 20.0 20 10/16/2024 21:34 WG2383424 1,1,2,2-Tetrachloroethane U 2.66 20.0 20 10/16/2024 21:34 WG2383424 Tetrachloroethene U 6.00 20.0 20 10/16/2024 21:34 WG2383424 Toluene U 5.56 20.0 20 10/16/2024 21:34 WG2383424 1,2,3-Trichlorobenzene U 4.60 20.0 20 10/16/2024 21:34 WG2383424 1,2,4-Trichlorobenzene U 9.62 20.0 20 10/16/2024 21:34 WG2383424 1,1,1-Trichloroethane U 2.98 20.0 20 10/16/2024 21:34 WG2383424 1,1,2-Trichloroethane U 3.16 20.0 20 10/16/2024 21:34 WG2383424 Trichloroethene U J4 3.80 20.0 20 10/16/2024 21:34 WG2383424 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 20 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 20 of 40 SAMPLE RESULTS - 08 L1786012 MW-1 Collected date/time: 10/03/24 10:30 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 3.20 100 20 10/16/2024 21:34 WG2383424 1,2,3-Trichloropropane U 4.74 50.0 20 10/16/2024 21:34 WG2383424 1,2,4-Trimethylbenzene U 6.44 20.0 20 10/16/2024 21:34 WG2383424 1,3,5-Trimethylbenzene U 2.08 20.0 20 10/16/2024 21:34 WG2383424 Vinyl chloride U 4.68 20.0 20 10/16/2024 21:34 WG2383424 o-Xylene U 3.48 20.0 20 10/16/2024 21:34 WG2383424 m&p-Xylenes U 8.60 40.0 20 10/16/2024 21:34 WG2383424 (S) Toluene-d8 104 80.0-120 10/16/2024 21:34 WG2383424 (S) 4-Bromofluorobenzene 99.3 77.0-126 10/16/2024 21:34 WG2383424 (S) 1,2-Dichloroethane-d4 91.0 70.0-130 10/16/2024 21:34 WG2383424 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 21 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 21 of 40 SAMPLE RESULTS - 09 L1786012 VW-1 Collected date/time: 10/03/24 11:10 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 10/16/2024 20:52 WG2383424 Acrolein U 2.54 50.0 1 10/16/2024 20:52 WG2383424 Acrylonitrile U 0.671 10.0 1 10/16/2024 20:52 WG2383424 Benzene 0.440 J 0.0941 1.00 1 10/16/2024 20:52 WG2383424 Bromobenzene U 0.118 1.00 1 10/16/2024 20:52 WG2383424 Bromodichloromethane U 0.136 1.00 1 10/16/2024 20:52 WG2383424 Bromoform U 0.129 1.00 1 10/16/2024 20:52 WG2383424 Bromomethane U 0.605 5.00 1 10/16/2024 20:52 WG2383424 n-Butylbenzene U 0.157 1.00 1 10/16/2024 20:52 WG2383424 sec-Butylbenzene U 0.125 1.00 1 10/16/2024 20:52 WG2383424 tert-Butylbenzene U 0.127 1.00 1 10/16/2024 20:52 WG2383424 Carbon tetrachloride U 0.128 1.00 1 10/16/2024 20:52 WG2383424 Chlorobenzene U 0.116 1.00 1 10/16/2024 20:52 WG2383424 Chlorodibromomethane U 0.140 1.00 1 10/16/2024 20:52 WG2383424 Chloroethane U 0.192 5.00 1 10/16/2024 20:52 WG2383424 Chloroform 0.167 J J4 0.111 5.00 1 10/16/2024 20:52 WG2383424 Chloromethane U 0.960 2.50 1 10/16/2024 20:52 WG2383424 2-Chlorotoluene U 0.106 1.00 1 10/16/2024 20:52 WG2383424 4-Chlorotoluene U 0.114 1.00 1 10/16/2024 20:52 WG2383424 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 10/16/2024 20:52 WG2383424 1,2-Dibromoethane U 0.126 1.00 1 10/16/2024 20:52 WG2383424 Dibromomethane U 0.122 1.00 1 10/16/2024 20:52 WG2383424 1,2-Dichlorobenzene U 0.107 1.00 1 10/16/2024 20:52 WG2383424 1,3-Dichlorobenzene U 0.110 1.00 1 10/16/2024 20:52 WG2383424 1,4-Dichlorobenzene U 0.120 1.00 1 10/16/2024 20:52 WG2383424 Dichlorodifluoromethane U 0.374 5.00 1 10/16/2024 20:52 WG2383424 1,1-Dichloroethane U 0.100 1.00 1 10/16/2024 20:52 WG2383424 1,2-Dichloroethane U 0.0819 1.00 1 10/16/2024 20:52 WG2383424 1,1-Dichloroethene U 0.188 1.00 1 10/16/2024 20:52 WG2383424 cis-1,2-Dichloroethene U 0.126 1.00 1 10/16/2024 20:52 WG2383424 trans-1,2-Dichloroethene U 0.149 1.00 1 10/16/2024 20:52 WG2383424 1,2-Dichloropropane U 0.149 1.00 1 10/16/2024 20:52 WG2383424 1,1-Dichloropropene U 0.142 1.00 1 10/16/2024 20:52 WG2383424 1,3-Dichloropropane U 0.110 1.00 1 10/16/2024 20:52 WG2383424 2,2-Dichloropropane U 0.161 1.00 1 10/16/2024 20:52 WG2383424 Di-isopropyl ether U 0.105 1.00 1 10/16/2024 20:52 WG2383424 Ethylbenzene 0.364 J 0.137 1.00 1 10/16/2024 20:52 WG2383424 Hexachloro-1,3-butadiene U 0.337 1.00 1 10/16/2024 20:52 WG2383424 Isopropylbenzene U 0.105 1.00 1 10/16/2024 20:52 WG2383424 p-Isopropyltoluene U 0.120 1.00 1 10/16/2024 20:52 WG2383424 2-Butanone (MEK)U 1.19 10.0 1 10/16/2024 20:52 WG2383424 Methylene Chloride U 0.430 5.00 1 10/16/2024 20:52 WG2383424 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/16/2024 20:52 WG2383424 Methyl tert-butyl ether U 0.101 1.00 1 10/16/2024 20:52 WG2383424 Naphthalene U 1.00 5.00 1 10/16/2024 20:52 WG2383424 n-Propylbenzene 0.131 J 0.0993 1.00 1 10/16/2024 20:52 WG2383424 Styrene U 0.118 1.00 1 10/16/2024 20:52 WG2383424 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/16/2024 20:52 WG2383424 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/16/2024 20:52 WG2383424 Tetrachloroethene U 0.300 1.00 1 10/16/2024 20:52 WG2383424 Toluene 1.88 0.278 1.00 1 10/16/2024 20:52 WG2383424 1,2,3-Trichlorobenzene U 0.230 1.00 1 10/16/2024 20:52 WG2383424 1,2,4-Trichlorobenzene U 0.481 1.00 1 10/16/2024 20:52 WG2383424 1,1,1-Trichloroethane U 0.149 1.00 1 10/16/2024 20:52 WG2383424 1,1,2-Trichloroethane U 0.158 1.00 1 10/16/2024 20:52 WG2383424 Trichloroethene U J4 0.190 1.00 1 10/16/2024 20:52 WG2383424 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 22 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 22 of 40 SAMPLE RESULTS - 09 L1786012 VW-1 Collected date/time: 10/03/24 11:10 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 10/16/2024 20:52 WG2383424 1,2,3-Trichloropropane U 0.237 2.50 1 10/16/2024 20:52 WG2383424 1,2,4-Trimethylbenzene 0.573 J 0.322 1.00 1 10/16/2024 20:52 WG2383424 1,3,5-Trimethylbenzene 0.233 J 0.104 1.00 1 10/16/2024 20:52 WG2383424 Vinyl chloride U 0.234 1.00 1 10/16/2024 20:52 WG2383424 o-Xylene 0.690 J 0.174 1.00 1 10/16/2024 20:52 WG2383424 m&p-Xylenes 0.690 J 0.430 2.00 1 10/16/2024 20:52 WG2383424 (S) Toluene-d8 101 80.0-120 10/16/2024 20:52 WG2383424 (S) 4-Bromofluorobenzene 101 77.0-126 10/16/2024 20:52 WG2383424 (S) 1,2-Dichloroethane-d4 94.5 70.0-130 10/16/2024 20:52 WG2383424 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 23 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 23 of 40 SAMPLE RESULTS - 10 L1786012 TRIP BLANK Collected date/time: 10/02/24 00:00 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 10/14/2024 19:08 WG2381971 Acrolein U 2.54 50.0 1 10/14/2024 19:08 WG2381971 Acrylonitrile U 0.671 10.0 1 10/14/2024 19:08 WG2381971 Benzene U 0.0941 1.00 1 10/14/2024 19:08 WG2381971 Bromobenzene U 0.118 1.00 1 10/16/2024 14:31 WG2382605 Bromodichloromethane U 0.136 1.00 1 10/14/2024 19:08 WG2381971 Bromoform U 0.129 1.00 1 10/14/2024 19:08 WG2381971 Bromomethane U 0.605 5.00 1 10/14/2024 19:08 WG2381971 n-Butylbenzene U 0.157 1.00 1 10/16/2024 14:31 WG2382605 sec-Butylbenzene U 0.125 1.00 1 10/16/2024 14:31 WG2382605 tert-Butylbenzene U 0.127 1.00 1 10/16/2024 14:31 WG2382605 Carbon tetrachloride U 0.128 1.00 1 10/14/2024 19:08 WG2381971 Chlorobenzene U 0.116 1.00 1 10/14/2024 19:08 WG2381971 Chlorodibromomethane U 0.140 1.00 1 10/14/2024 19:08 WG2381971 Chloroethane U 0.192 5.00 1 10/14/2024 19:08 WG2381971 Chloroform U 0.111 5.00 1 10/14/2024 19:08 WG2381971 Chloromethane U 0.960 2.50 1 10/14/2024 19:08 WG2381971 2-Chlorotoluene U 0.106 1.00 1 10/16/2024 14:31 WG2382605 4-Chlorotoluene U 0.114 1.00 1 10/16/2024 14:31 WG2382605 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 10/16/2024 14:31 WG2382605 1,2-Dibromoethane U 0.126 1.00 1 10/14/2024 19:08 WG2381971 Dibromomethane U 0.122 1.00 1 10/14/2024 19:08 WG2381971 1,2-Dichlorobenzene U 0.107 1.00 1 10/16/2024 14:31 WG2382605 1,3-Dichlorobenzene U 0.110 1.00 1 10/16/2024 14:31 WG2382605 1,4-Dichlorobenzene U 0.120 1.00 1 10/16/2024 14:31 WG2382605 Dichlorodifluoromethane U 0.374 5.00 1 10/14/2024 19:08 WG2381971 1,1-Dichloroethane U 0.100 1.00 1 10/14/2024 19:08 WG2381971 1,2-Dichloroethane U 0.0819 1.00 1 10/14/2024 19:08 WG2381971 1,1-Dichloroethene U 0.188 1.00 1 10/14/2024 19:08 WG2381971 cis-1,2-Dichloroethene U 0.126 1.00 1 10/14/2024 19:08 WG2381971 trans-1,2-Dichloroethene U 0.149 1.00 1 10/14/2024 19:08 WG2381971 1,2-Dichloropropane U 0.149 1.00 1 10/14/2024 19:08 WG2381971 1,1-Dichloropropene U 0.142 1.00 1 10/14/2024 19:08 WG2381971 1,3-Dichloropropane U 0.110 1.00 1 10/14/2024 19:08 WG2381971 2,2-Dichloropropane U 0.161 1.00 1 10/14/2024 19:08 WG2381971 Di-isopropyl ether U 0.105 1.00 1 10/14/2024 19:08 WG2381971 Ethylbenzene U 0.137 1.00 1 10/14/2024 19:08 WG2381971 Hexachloro-1,3-butadiene U 0.337 1.00 1 10/16/2024 14:31 WG2382605 Isopropylbenzene U 0.105 1.00 1 10/14/2024 19:08 WG2381971 p-Isopropyltoluene U 0.120 1.00 1 10/16/2024 14:31 WG2382605 2-Butanone (MEK)U 1.19 10.0 1 10/14/2024 19:08 WG2381971 Methylene Chloride U 0.430 5.00 1 10/14/2024 19:08 WG2381971 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 10/14/2024 19:08 WG2381971 Methyl tert-butyl ether U 0.101 1.00 1 10/14/2024 19:08 WG2381971 Naphthalene U 1.00 5.00 1 10/16/2024 14:31 WG2382605 n-Propylbenzene U 0.0993 1.00 1 10/16/2024 14:31 WG2382605 Styrene U J4 0.118 1.00 1 10/14/2024 19:08 WG2381971 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 10/14/2024 19:08 WG2381971 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 10/16/2024 14:31 WG2382605 Tetrachloroethene U 0.300 1.00 1 10/14/2024 19:08 WG2381971 Toluene U 0.278 1.00 1 10/14/2024 19:08 WG2381971 1,2,3-Trichlorobenzene U 0.230 1.00 1 10/16/2024 14:31 WG2382605 1,2,4-Trichlorobenzene U 0.481 1.00 1 10/16/2024 14:31 WG2382605 1,1,1-Trichloroethane U 0.149 1.00 1 10/14/2024 19:08 WG2381971 1,1,2-Trichloroethane U 0.158 1.00 1 10/14/2024 19:08 WG2381971 Trichloroethene U 0.190 1.00 1 10/14/2024 19:08 WG2381971 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 24 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 24 of 40 SAMPLE RESULTS - 10 L1786012 TRIP BLANK Collected date/time: 10/02/24 00:00 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Trichlorofluoromethane U 0.160 5.00 1 10/14/2024 19:08 WG2381971 1,2,3-Trichloropropane U 0.237 2.50 1 10/16/2024 14:31 WG2382605 1,2,4-Trimethylbenzene U 0.322 1.00 1 10/16/2024 14:31 WG2382605 1,3,5-Trimethylbenzene U 0.104 1.00 1 10/16/2024 14:31 WG2382605 Vinyl chloride U 0.234 1.00 1 10/14/2024 19:08 WG2381971 o-Xylene U 0.174 1.00 1 10/14/2024 19:08 WG2381971 m&p-Xylenes U 0.430 2.00 1 10/14/2024 19:08 WG2381971 (S) Toluene-d8 104 80.0-120 10/14/2024 19:08 WG2381971 (S) Toluene-d8 102 80.0-120 10/16/2024 14:31 WG2382605 (S) 4-Bromofluorobenzene 90.0 77.0-126 10/14/2024 19:08 WG2381971 (S) 4-Bromofluorobenzene 103 77.0-126 10/16/2024 14:31 WG2382605 (S) 1,2-Dichloroethane-d4 94.4 70.0-130 10/14/2024 19:08 WG2381971 (S) 1,2-Dichloroethane-d4 98.7 70.0-130 10/16/2024 14:31 WG2382605 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 25 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 25 of 40 QUALITY CONTROL SUMMARYWG2381971 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-02,03,04,10 Method Blank (MB) (MB) R4132930-2 10/14/24 17:58 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Acrylonitrile U 0.671 10.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 Chloromethane U 0.960 2.50 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,2-Dichloropropane U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 2,2-Dichloropropane U 0.161 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 26 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 26 of 40 QUALITY CONTROL SUMMARYWG2381971 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-02,03,04,10 Method Blank (MB) (MB) R4132930-2 10/14/24 17:58 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l 2-Butanone (MEK)U 1.19 10.0 Methylene Chloride U 0.430 5.00 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 n-Propylbenzene U 0.0993 1.00 Styrene U 0.118 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 o-Xylene U 0.174 1.00 m&p-Xylenes U 0.430 2.00 (S) Toluene-d8 102 80.0-120 (S) 4-Bromofluorobenzene 94.5 77.0-126 (S) 1,2-Dichloroethane-d4 98.7 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4132930-1 10/14/24 16:58 • (LCSD) R4132930-3 10/14/24 18:18 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acetone 25.0 28.8 31.6 115 126 19.0-160 J J 9.27 27 Acrolein 25.0 25.1 25.6 100 102 10.0-160 J J 1.97 26 Acrylonitrile 25.0 27.3 29.2 109 117 55.0-149 6.73 20 Benzene 5.00 5.12 5.37 102 107 70.0-123 4.77 20 Bromobenzene 5.00 4.98 5.39 99.6 108 73.0-121 7.91 20 Bromodichloromethane 5.00 5.02 5.24 100 105 75.0-120 4.29 20 Bromoform 5.00 3.99 4.37 79.8 87.4 68.0-132 9.09 20 Bromomethane 5.00 3.88 3.94 77.6 78.8 10.0-160 J J 1.53 25 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 27 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 27 of 40 QUALITY CONTROL SUMMARYWG2381971 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-02,03,04,10 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4132930-1 10/14/24 16:58 • (LCSD) R4132930-3 10/14/24 18:18 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% n-Butylbenzene 5.00 4.10 4.66 82.0 93.2 73.0-125 12.8 20 sec-Butylbenzene 5.00 4.44 4.72 88.8 94.4 75.0-125 6.11 20 tert-Butylbenzene 5.00 4.31 4.75 86.2 95.0 76.0-124 9.71 20 Carbon tetrachloride 5.00 4.48 5.04 89.6 101 68.0-126 11.8 20 Chlorobenzene 5.00 4.57 5.04 91.4 101 80.0-121 9.78 20 Chlorodibromomethane 5.00 4.08 4.88 81.6 97.6 77.0-125 17.9 20 Chloroethane 5.00 4.34 4.81 86.8 96.2 47.0-150 J J 10.3 20 Chloroform 5.00 4.89 5.66 97.8 113 73.0-120 J 14.6 20 Chloromethane 5.00 5.61 6.12 112 122 41.0-142 8.70 20 2-Chlorotoluene 5.00 4.82 4.95 96.4 99.0 76.0-123 2.66 20 4-Chlorotoluene 5.00 4.38 4.59 87.6 91.8 75.0-122 4.68 20 1,2-Dibromo-3-Chloropropane 5.00 3.98 4.75 79.6 95.0 58.0-134 J J 17.6 20 1,2-Dibromoethane 5.00 4.38 4.71 87.6 94.2 80.0-122 7.26 20 Dibromomethane 5.00 4.87 5.40 97.4 108 80.0-120 10.3 20 1,2-Dichlorobenzene 5.00 4.69 5.50 93.8 110 79.0-121 15.9 20 1,3-Dichlorobenzene 5.00 4.96 5.14 99.2 103 79.0-120 3.56 20 1,4-Dichlorobenzene 5.00 4.80 5.10 96.0 102 79.0-120 6.06 20 Dichlorodifluoromethane 5.00 6.82 7.26 136 145 51.0-149 6.25 20 1,1-Dichloroethane 5.00 4.73 5.21 94.6 104 70.0-126 9.66 20 1,2-Dichloroethane 5.00 4.93 5.25 98.6 105 70.0-128 6.29 20 1,1-Dichloroethene 5.00 4.88 5.19 97.6 104 71.0-124 6.16 20 cis-1,2-Dichloroethene 5.00 4.87 5.37 97.4 107 73.0-120 9.77 20 trans-1,2-Dichloroethene 5.00 5.08 5.73 102 115 73.0-120 12.0 20 1,2-Dichloropropane 5.00 4.53 5.03 90.6 101 77.0-125 10.5 20 1,1-Dichloropropene 5.00 5.00 5.15 100 103 74.0-126 2.96 20 1,3-Dichloropropane 5.00 4.97 5.10 99.4 102 80.0-120 2.58 20 2,2-Dichloropropane 5.00 4.64 5.03 92.8 101 58.0-130 8.07 20 Di-isopropyl ether 5.00 5.55 5.81 111 116 58.0-138 4.58 20 Ethylbenzene 5.00 4.27 4.47 85.4 89.4 79.0-123 4.58 20 Hexachloro-1,3-butadiene 5.00 5.27 6.07 105 121 54.0-138 14.1 20 Isopropylbenzene 5.00 3.93 4.35 78.6 87.0 76.0-127 10.1 20 p-Isopropyltoluene 5.00 4.24 4.72 84.8 94.4 76.0-125 10.7 20 2-Butanone (MEK)25.0 30.5 31.0 122 124 44.0-160 1.63 20 Methylene Chloride 5.00 4.36 4.84 87.2 96.8 67.0-120 J J 10.4 20 4-Methyl-2-pentanone (MIBK)25.0 26.6 30.0 106 120 68.0-142 12.0 20 Methyl tert-butyl ether 5.00 4.86 5.10 97.2 102 68.0-125 4.82 20 n-Propylbenzene 5.00 4.47 4.85 89.4 97.0 77.0-124 8.15 20 Styrene 5.00 3.58 3.89 71.6 77.8 73.0-130 J4 8.30 20 1,1,1,2-Tetrachloroethane 5.00 4.51 4.94 90.2 98.8 75.0-125 9.10 20 1,1,2,2-Tetrachloroethane 5.00 5.43 6.02 109 120 65.0-130 10.3 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 28 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 28 of 40 QUALITY CONTROL SUMMARYWG2381971 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-02,03,04,10 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4132930-1 10/14/24 16:58 • (LCSD) R4132930-3 10/14/24 18:18 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Tetrachloroethene 5.00 4.76 5.40 95.2 108 72.0-132 12.6 20 Toluene 5.00 4.67 4.99 93.4 99.8 79.0-120 6.63 20 1,2,3-Trichlorobenzene 5.00 4.48 4.80 89.6 96.0 50.0-138 6.90 20 1,2,4-Trichlorobenzene 5.00 3.66 3.70 73.2 74.0 57.0-137 1.09 20 1,1,1-Trichloroethane 5.00 5.23 5.44 105 109 73.0-124 3.94 20 1,1,2-Trichloroethane 5.00 5.10 5.28 102 106 80.0-120 3.47 20 Trichloroethene 5.00 4.68 4.77 93.6 95.4 78.0-124 1.90 20 Trichlorofluoromethane 5.00 5.96 5.94 119 119 59.0-147 0.336 20 1,2,3-Trichloropropane 5.00 5.46 6.02 109 120 73.0-130 9.76 20 1,2,4-Trimethylbenzene 5.00 4.31 4.73 86.2 94.6 76.0-121 9.29 20 1,3,5-Trimethylbenzene 5.00 4.32 4.87 86.4 97.4 76.0-122 12.0 20 Vinyl chloride 5.00 4.96 5.45 99.2 109 67.0-131 9.41 20 o-Xylene 5.00 4.19 4.46 83.8 89.2 80.0-122 6.24 20 m&p-Xylenes 10.0 8.33 9.27 83.3 92.7 80.0-122 10.7 20 (S) Toluene-d8 90.2 92.2 80.0-120 (S) 4-Bromofluorobenzene 85.7 90.8 77.0-126 (S) 1,2-Dichloroethane-d4 93.9 95.2 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 29 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 29 of 40 QUALITY CONTROL SUMMARYWG2382605 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-01,02,03,04,05,06,10 Method Blank (MB) (MB) R4134673-2 10/16/24 13:10 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Acrylonitrile U 0.671 10.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 Chloromethane U 0.960 2.50 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,2-Dichloropropane U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 2,2-Dichloropropane U 0.161 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 30 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 30 of 40 QUALITY CONTROL SUMMARYWG2382605 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-01,02,03,04,05,06,10 Method Blank (MB) (MB) R4134673-2 10/16/24 13:10 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l 2-Butanone (MEK)U 1.19 10.0 Methylene Chloride U 0.430 5.00 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 Naphthalene U 1.00 5.00 n-Propylbenzene U 0.0993 1.00 Styrene U 0.118 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 o-Xylene U 0.174 1.00 m&p-Xylenes U 0.430 2.00 (S) Toluene-d8 101 80.0-120 (S) 4-Bromofluorobenzene 100 77.0-126 (S) 1,2-Dichloroethane-d4 98.4 70.0-130 Laboratory Control Sample (LCS) (LCS) R4134673-1 10/16/24 12:28 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Acetone 25.0 24.5 98.0 19.0-160 J Acrolein 25.0 20.9 83.6 10.0-160 J Acrylonitrile 25.0 23.1 92.4 55.0-149 Benzene 5.00 5.83 117 70.0-123 Bromobenzene 5.00 4.61 92.2 73.0-121 Bromodichloromethane 5.00 5.84 117 75.0-120 Bromoform 5.00 5.04 101 68.0-132 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 31 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 31 of 40 QUALITY CONTROL SUMMARYWG2382605 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-01,02,03,04,05,06,10 Laboratory Control Sample (LCS) (LCS) R4134673-1 10/16/24 12:28 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Bromomethane 5.00 5.54 111 10.0-160 n-Butylbenzene 5.00 4.59 91.8 73.0-125 sec-Butylbenzene 5.00 4.98 99.6 75.0-125 tert-Butylbenzene 5.00 4.96 99.2 76.0-124 Carbon tetrachloride 5.00 6.22 124 68.0-126 Chlorobenzene 5.00 5.19 104 80.0-121 Chlorodibromomethane 5.00 5.06 101 77.0-125 Chloroethane 5.00 4.65 93.0 47.0-150 J Chloroform 5.00 6.09 122 73.0-120 J4 Chloromethane 5.00 4.49 89.8 41.0-142 2-Chlorotoluene 5.00 4.68 93.6 76.0-123 4-Chlorotoluene 5.00 4.64 92.8 75.0-122 1,2-Dibromo-3-Chloropropane 5.00 4.30 86.0 58.0-134 J 1,2-Dibromoethane 5.00 4.98 99.6 80.0-122 Dibromomethane 5.00 5.40 108 80.0-120 1,2-Dichlorobenzene 5.00 5.30 106 79.0-121 1,3-Dichlorobenzene 5.00 5.17 103 79.0-120 1,4-Dichlorobenzene 5.00 5.14 103 79.0-120 Dichlorodifluoromethane 5.00 5.66 113 51.0-149 1,1-Dichloroethane 5.00 5.42 108 70.0-126 1,2-Dichloroethane 5.00 5.51 110 70.0-128 1,1-Dichloroethene 5.00 5.51 110 71.0-124 cis-1,2-Dichloroethene 5.00 5.73 115 73.0-120 trans-1,2-Dichloroethene 5.00 5.98 120 73.0-120 1,2-Dichloropropane 5.00 5.54 111 77.0-125 1,1-Dichloropropene 5.00 5.60 112 74.0-126 1,3-Dichloropropane 5.00 4.86 97.2 80.0-120 2,2-Dichloropropane 5.00 5.50 110 58.0-130 Di-isopropyl ether 5.00 4.43 88.6 58.0-138 Ethylbenzene 5.00 5.25 105 79.0-123 Hexachloro-1,3-butadiene 5.00 5.87 117 54.0-138 Isopropylbenzene 5.00 5.26 105 76.0-127 p-Isopropyltoluene 5.00 4.88 97.6 76.0-125 2-Butanone (MEK)25.0 22.9 91.6 44.0-160 Methylene Chloride 5.00 5.96 119 67.0-120 4-Methyl-2-pentanone (MIBK)25.0 19.2 76.8 68.0-142 Methyl tert-butyl ether 5.00 5.15 103 68.0-125 Naphthalene 5.00 3.60 72.0 54.0-135 J n-Propylbenzene 5.00 4.73 94.6 77.0-124 Styrene 5.00 4.94 98.8 73.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 32 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 32 of 40 QUALITY CONTROL SUMMARYWG2382605 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-01,02,03,04,05,06,10 Laboratory Control Sample (LCS) (LCS) R4134673-1 10/16/24 12:28 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% 1,1,1,2-Tetrachloroethane 5.00 5.33 107 75.0-125 1,1,2,2-Tetrachloroethane 5.00 4.62 92.4 65.0-130 Tetrachloroethene 5.00 6.12 122 72.0-132 Toluene 5.00 5.34 107 79.0-120 1,2,3-Trichlorobenzene 5.00 4.50 90.0 50.0-138 1,2,4-Trichlorobenzene 5.00 4.46 89.2 57.0-137 1,1,1-Trichloroethane 5.00 5.79 116 73.0-124 1,1,2-Trichloroethane 5.00 4.99 99.8 80.0-120 Trichloroethene 5.00 6.23 125 78.0-124 J4 Trichlorofluoromethane 5.00 6.02 120 59.0-147 1,2,3-Trichloropropane 5.00 5.03 101 73.0-130 1,2,4-Trimethylbenzene 5.00 4.86 97.2 76.0-121 1,3,5-Trimethylbenzene 5.00 4.87 97.4 76.0-122 Vinyl chloride 5.00 4.93 98.6 67.0-131 o-Xylene 5.00 5.11 102 80.0-122 m&p-Xylenes 10.0 10.5 105 80.0-122 (S) Toluene-d8 101 80.0-120 (S) 4-Bromofluorobenzene 103 77.0-126 (S) 1,2-Dichloroethane-d4 98.5 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 33 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 33 of 40 QUALITY CONTROL SUMMARYWG2383424 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-07,08,09 Method Blank (MB) (MB) R4134675-2 10/16/24 13:10 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Acrylonitrile U 0.671 10.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 Chloromethane U 0.960 2.50 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,2-Dichloropropane U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 2,2-Dichloropropane U 0.161 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 34 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 34 of 40 QUALITY CONTROL SUMMARYWG2383424 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-07,08,09 Method Blank (MB) (MB) R4134675-2 10/16/24 13:10 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l 2-Butanone (MEK)U 1.19 10.0 Methylene Chloride U 0.430 5.00 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 Naphthalene U 1.00 5.00 n-Propylbenzene U 0.0993 1.00 Styrene U 0.118 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 o-Xylene U 0.174 1.00 m&p-Xylenes U 0.430 2.00 (S) Toluene-d8 101 80.0-120 (S) 4-Bromofluorobenzene 100 77.0-126 (S) 1,2-Dichloroethane-d4 98.4 70.0-130 Laboratory Control Sample (LCS) (LCS) R4134675-1 10/16/24 12:28 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Acetone 25.0 24.5 98.0 19.0-160 J Acrolein 25.0 20.9 83.6 10.0-160 J Acrylonitrile 25.0 23.1 92.4 55.0-149 Benzene 5.00 5.83 117 70.0-123 Bromobenzene 5.00 4.61 92.2 73.0-121 Bromodichloromethane 5.00 5.84 117 75.0-120 Bromoform 5.00 5.04 101 68.0-132 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 35 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 35 of 40 QUALITY CONTROL SUMMARYWG2383424 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-07,08,09 Laboratory Control Sample (LCS) (LCS) R4134675-1 10/16/24 12:28 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Bromomethane 5.00 5.54 111 10.0-160 n-Butylbenzene 5.00 4.59 91.8 73.0-125 sec-Butylbenzene 5.00 4.98 99.6 75.0-125 tert-Butylbenzene 5.00 4.96 99.2 76.0-124 Carbon tetrachloride 5.00 6.22 124 68.0-126 Chlorobenzene 5.00 5.19 104 80.0-121 Chlorodibromomethane 5.00 5.06 101 77.0-125 Chloroethane 5.00 4.65 93.0 47.0-150 J Chloroform 5.00 6.09 122 73.0-120 J4 Chloromethane 5.00 4.49 89.8 41.0-142 2-Chlorotoluene 5.00 4.68 93.6 76.0-123 4-Chlorotoluene 5.00 4.64 92.8 75.0-122 1,2-Dibromo-3-Chloropropane 5.00 4.30 86.0 58.0-134 J 1,2-Dibromoethane 5.00 4.98 99.6 80.0-122 Dibromomethane 5.00 5.40 108 80.0-120 1,2-Dichlorobenzene 5.00 5.30 106 79.0-121 1,3-Dichlorobenzene 5.00 5.17 103 79.0-120 1,4-Dichlorobenzene 5.00 5.14 103 79.0-120 Dichlorodifluoromethane 5.00 5.66 113 51.0-149 1,1-Dichloroethane 5.00 5.42 108 70.0-126 1,2-Dichloroethane 5.00 5.51 110 70.0-128 1,1-Dichloroethene 5.00 5.51 110 71.0-124 cis-1,2-Dichloroethene 5.00 5.73 115 73.0-120 trans-1,2-Dichloroethene 5.00 5.98 120 73.0-120 1,2-Dichloropropane 5.00 5.54 111 77.0-125 1,1-Dichloropropene 5.00 5.60 112 74.0-126 1,3-Dichloropropane 5.00 4.86 97.2 80.0-120 2,2-Dichloropropane 5.00 5.50 110 58.0-130 Di-isopropyl ether 5.00 4.43 88.6 58.0-138 Ethylbenzene 5.00 5.25 105 79.0-123 Hexachloro-1,3-butadiene 5.00 5.87 117 54.0-138 Isopropylbenzene 5.00 5.26 105 76.0-127 p-Isopropyltoluene 5.00 4.88 97.6 76.0-125 2-Butanone (MEK)25.0 22.9 91.6 44.0-160 Methylene Chloride 5.00 5.96 119 67.0-120 4-Methyl-2-pentanone (MIBK)25.0 19.2 76.8 68.0-142 Methyl tert-butyl ether 5.00 5.15 103 68.0-125 Naphthalene 5.00 3.60 72.0 54.0-135 J n-Propylbenzene 5.00 4.73 94.6 77.0-124 Styrene 5.00 4.94 98.8 73.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 36 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 36 of 40 QUALITY CONTROL SUMMARYWG2383424 Volatile Organic Compounds (GC/MS) by Method 6200B-2011 L1786012-07,08,09 Laboratory Control Sample (LCS) (LCS) R4134675-1 10/16/24 12:28 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% 1,1,1,2-Tetrachloroethane 5.00 5.33 107 75.0-125 1,1,2,2-Tetrachloroethane 5.00 4.62 92.4 65.0-130 Tetrachloroethene 5.00 6.12 122 72.0-132 Toluene 5.00 5.34 107 79.0-120 1,2,3-Trichlorobenzene 5.00 4.50 90.0 50.0-138 1,2,4-Trichlorobenzene 5.00 4.46 89.2 57.0-137 1,1,1-Trichloroethane 5.00 5.79 116 73.0-124 1,1,2-Trichloroethane 5.00 4.99 99.8 80.0-120 Trichloroethene 5.00 6.23 125 78.0-124 J4 Trichlorofluoromethane 5.00 6.02 120 59.0-147 1,2,3-Trichloropropane 5.00 5.03 101 73.0-130 1,2,4-Trimethylbenzene 5.00 4.86 97.2 76.0-121 1,3,5-Trimethylbenzene 5.00 4.87 97.4 76.0-122 Vinyl chloride 5.00 4.93 98.6 67.0-131 o-Xylene 5.00 5.11 102 80.0-122 m&p-Xylenes 10.0 10.5 105 80.0-122 (S) Toluene-d8 101 80.0-120 (S) 4-Bromofluorobenzene 103 77.0-126 (S) 1,2-Dichloroethane-d4 98.5 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 37 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 37 of 40 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S)Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description J The identification of the analyte is acceptable; the reported value is an estimate. J4 The associated batch QC was outside the established quality control range for accuracy. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 38 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 38 of 40 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 09:16 39 of 40 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: Excel Civil & Environmental Associates 2020004 L1786012 10/23/24 18:31 39 of 40 EXCEL CIVIL & ENVIRONMENTAL ASSOCIATES, PLLC www.excelengr.com APPENDIX B REPORTING TABLES (B-1, B-2, B-6, B-10) 1 Table B‐1: SITE HISTORY – UST/AST SYSTEM and OTHER RELEASE INFORMATION  SAM’S MART 103 (former 715)  3215 QUEEN CITY DRIVE, CHARLOTTE, NORTH CAROLINA  NCDEQ Incident No. 40995  Excel Project No. 2020004    UST ID  Number  Current /  Most‐Recent  Contents*  Previous  Contents*  Capacity (in  gallons)  Construction  Details**  Tank  Dimensions  Description  of Piping  and Pumps   Date Tank  Installed  Status of  UST***  Release  associated  with this UST  System?  1 Gasoline   12,000          5/1/85    Current See Below  2 Kerosene   4,000        3 Gasoline   8,200        4 Gasoline   8,200        5 Diesel   8,200                                                                                    Add additional records as necessary  AST ID  Number  Current /  Most‐Recent  Contents*  Previous  Contents*  Capacity (in  gallons)  Construction  Details**  Tank  Dimensions  Description  of Piping  and Pumps   Date Tank  Installed  Status of  AST***  Release  associated  with this AST  System?                                               Add additional records as necessary  Incident  Number  Material  Released  Date of  Release Description of Release  40995    Line closure activities were conducted at the site in early January 2020.   During the closure  activities, impacted soils were identified with approximately 235.49 tons removed and temporarily  stockpiled.  On January 7 and 13, 2020, Henry Nemargut Engineering collected soil samples along  the former product piping trenches as outlined in the UST removal guidelines.                           Add additional records as necessary  *    Gasoline (unleaded or leaded), diesel, used oil, waste oil, aviation fuel, etc., or pesticides, non‐halogenated or halogenated solvents, etc.  ** Fiberglass (single‐ or double‐walled), steel (single‐ or double‐walled), steel with FRP (single‐ or double‐walled), steel with liner, other, unknown.  *** Currently operational, not in use or temporarily closed (specify date), permanently closed in place (specify date), permanently closed by removal (specify date) TABLE B‐2: SITE HISTORY ‐ UST/AST OWNER/OPERATOR and OTHER RESPONSIBLE PARTY  INFORMATION  SAM’S MART 103 (former 715)  3215 QUEEN CITY DRIVE, CHARLOTTE, NORTH CAROLINA  NCDEQ Incident No. 40995  Excel Project No. 2020004    UST ID Number MO‐9564    Facility ID Number 00‐0‐0000014954    Owner Name (and Contact) Dates of Operation  (mm/dd/yy to mm/dd/yy)  Sam’s Investments VI, LLC (Adnan Jazairi) Nov 1997 ‐ Present  Street Address  7935 Council Place, Suite 200  City State Zip Telephone Number  Matthews NC 28105 704‐563‐3988  Operator Name (and Contact) Dates of Operation  (mm/dd/yy to mm/dd/yy)  Sam’s Investments VI, LLC (Adnan Jazairi) Nov 1997 ‐ Present  Street Address  7935 Council Place, Suite 200  City State Zip Telephone Number  Matthews NC 28105 704‐563‐3988  Other Incidents Onsite or Commingled/In Close Proximity  Incident Number  Date Incident  Occurred   Name of Responsible Party   for Other Incident   Date Incident  Reported    Date Incident Closed  (i/a)   Street Address    City State Zip Telephone Number          Table 6: Adjacent Property Owner Information Incident No. 40995 Name: Sam’s Mart No. 103 (715) Facility ID#: 14954 Tax Parcel Number/ Map ID Owner/ Occupant Name (Last, First MI) Mailing Address / Physical Address 06122301 SME Investments LLC 3309 Queen City Drive, Charlotte NC, 28208 06122503 ( SITE ) Sam’s Investments LLC 7935 Council Place, Matthews, NC 28105 / 3215 Queen City Drive, Charlotte NC, 28208 06122218 Jiayuan LLC 218 Saint Andrews Ln, Chapel Hill, NC 27517 / 3302 Queen City Drive, Charlotte NC, 28208 06122107 Maruti Hospitality LLC P.O. Box 1415 Cornelius, NC 28031 / 3200 Queen City Drive, Charlotte, NC 28208 06122505 Cracker Barrel Old Country Store Inc. P.O. Box 787 Lebanon, TN 37088 / 3203 Queen City Drive, Charlotte, NC 28208 Notes: Revision Date: 3/25/2020 Appendix B Reporting Tables 192 Change 2 Table B-10: Land Use Revision Date: 1/5/2021 Incident Number and Name: 40995 Facility ID#: 14954 Map ID # Date Determined Land Use Feature (include zoning) Location (complete street address if applicable) Distance and Direction from Source Area 06122301 1/5/21 Commercial 3309 Queen City Drive, Charlotte NC, 28208 Adjacent to west 06122503 ( SITE ) 1/5/21 Commercial 7935 Council Place, Matthews, NC 28105 / 3215 Queen City Drive, Charlotte NC, 28208 SITE 06122218 1/5/21 Commercial 218 Saint Andrews Ln, Chapel Hill, NC 27517 / 3302 Queen City Drive, Charlotte NC, 28208 Adjacent to northwest 06122107 1/5/21 Commercial P.O. Box 1415 Cornelius, NC 28031 / 3200 Queen City Drive, Charlotte, NC 28208 Adjacent to north 06122505 1/5/21 Commercial P.O. Box 787 Lebanon, TN 37088 / 3203 Queen City Drive, Charlotte, NC 28208 Adjacent to east