Loading...
HomeMy WebLinkAboutAS-966_10748_CA_MRP_20230711 WithersRavenel Our People. Your Success. 115 MacKenan Drive | Cary, NC 27511 t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F-1479 ASHEVILLE | CARY | CHARLOTTE | GREENSBORO | LUMBERTON | PITTSBORO | RALEIGH | SOUTHERN PINES | WILMINGTON GROUNDWATER MONITORING REPORT 221 Sav-A-Stop NCDEQ Incident #10748 UST # AS-966 4613 US Highway 221 North Marion, McDowell County, North Carolina WithersRavenel Project No. 23-0307-G Prepared for: State of North Carolina Department of Environmental Quality Division of Waste Management Underground Storage Tank Section Federal & State Lead Program 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Prepared by: WithersRavenel 115 MacKenan Drive Cary, North Carolina 27511 North Carolina Firm License No. F-1479 July 11, 2023 WithersRavenel Our People. Your Success. 115 MacKenan Drive | Cary, NC 27511 t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F-1479 ASHEVILLE | CARY | CHARLOTTE | GREENSBORO | LUMBERTON | PITTSBORO | RALEIGH | SOUTHERN PINES | WILMINGTON July 11, 2023 State of North Carolina Department of Environmental Quality Federal & State Lead Program Division of Waste Management-Underground Storage Tank Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646 Attn: Ms. Sharon Ghiold Re: Corrective Action Performance Report (Initial) 221 Sav-A-Stop 4613 US Highway 221 North Marion, McDowell County, North Carolina Groundwater Incident Number: 10748 UST Number: AS-966 WR Project Number: 23-0307-G Ms. Ghiold: WithersRavenel, Inc. (WR) has completed this Groundwater Monitoring Report to document groundwater sampling activities completed at the facility in association with our proposal, numbered TA-02, for the above referenced site, approved by the Federal & State Lead Program on May 30, 2023. The enclosed report summarizes results of the recently completed monitoring activities. WR appreciates the opportunity to be of service to the Federal & State Lead Program. Should you have any questions regarding the attached, please contact us at (919) 469-3340. Cordially, WithersRavenel Flora D’Souza, CHMM Elizabeth A. Allyn, P.G. Environmental Project Scientist II Environmental Project Geologist II WithersRavenel Our People. Your Success. 221 Sav-A-Stop– Incident #10748 WR Project # 23-0307-G Groundwater Monitoring Report July 2023 i TABLE OF CONTENTS SECTION A. SITE INFORMATION ..................................................................................................................... 1 SECTION B. EXECUTIVE SUMMARY ................................................................................................................ 3 SECTION C. SITE HISTORY & SOURCE CHARACTERIZATION ................................................................ 5 SECTION D. GROUNDWATER SAMPLING – JUNE 2023 .......................................................................... 7 SECTION E. CONCLUSIONS AND RECOMMENDATIONS ........................................................................ 8 FIGURES Figure 1 General Location Map Figure 2 Site Map Figure 3 Receptor Map TABLES Table B-1 Site History: UST/AST System & Other Release Information Table B-4 Summary of Groundwater Analytical Results Table B-5A Public & Private Water Supply Well Information APPENDICES Appendix A Field Notes and Photographic Record Appendix B Laboratory Report and Chain of Custody Appendix C General Standard Operating Procedures WithersRavenel Our People. Your Success. 221 Sav-A-Stop– Incident #10748 WR Project # 23-0307-G Groundwater Monitoring Report July 2023 1 SECTION A. SITE INFORMATION 1. Site Identification Date of Report: July 11, 2023 Facility I.D.: 00-0-0000013600 Incident No.: 10748 UST No.: AS-966 Site Risk: High Site Rank: H240D Land Use Category: Residential Site Name: 221 Sav-A-Stop Site Location: 4613 US Highway 221 North Nearest City/Town: Marion County: McDowell Description of Geographical Data Point: UST Basin Location Method: UST Database Latitude: 35.738389° Longitude: -82.049226° 2. Contact Information Responsible Party: Robbins Oil Company Address: Post Office Box 207 Phone: Forest City, NC Property Owner: Shams-Aldeen Ghaleb Address: 435 Gun Club Road Bostic, NC 28018 Phone: 828-429-0937 Consultant/Contractor: WithersRavenel Address: 115 MacKenan Drive, Cary, NC 27511 Phone: 919-469-3340 Analytical Laboratory: Waypoint Analytical, Inc. State Certification Number: ENV402 Address: 449 Springbrook Rd., Charlotte, NC 28217 Phone: 704-529-6364 WithersRavenel Our People. Your Success. 221 Sav-A-Stop– Incident #10748 WR Project # 23-0307-G Groundwater Monitoring Report July 2023 3 SECTION B. EXECUTIVE SUMMARY 1. Summary of Activities Associated with Current TA WithersRavenel, Inc. (WR), in association with Task Authorization-02 (TA-02) under North Carolina Department of Environmental Quality (NCDEQ) Contract # N70522-C, performed monitoring activities including gauging, purging, and sampling site monitoring wells (MW) MW-15 and EM-3; and purging and sampling of water supply well (WSW) WSW. 2. Soil, Groundwater, and LNAPL Assessment Information Soils No soil samples were obtained at the property by WR in association with the current TA. WR personnel collected soil samples WR-1 and WR-2 from a depth of 1 to 2 feet below ground surface (bgs) on December 1, 2021. Analytical data for soil samples obtained from WR-1 and WR-2 collected adjacent to EW-2 and MW-15 did not report any compounds at concentrations that exceeded the established soil-to-groundwater maximum soil contaminant concentrations (MSCCs). Groundwater WR collected samples from site monitoring wells MW-15 and EM-3 on June 16, 2023. The groundwater samples from the sampled monitoring wells were submitted for analysis of VOCs by Standard Method (SM) 6200B. Analytical results for the samples collected from site monitoring wells did not indicate targeted VOCs at concentrations exceeding the laboratory’s method detection limits. Water Supply Wells WR collected samples from the on-site water supply well WSW (labeled as WSW-1 on the laboratory report). The samples from the sampled water supply wells were submitted for analysis of VOCs by SM6200B. Analytical results for the samples collected from the water supply wells did not indicate targeted VOCs at concentrations exceeding the laboratory’s method detection limits. LNAPL No light non-aqueous phase liquid (LNAPL) has been measured at the site to date. 3. Receptor Information WR did not perform a receptor update in association with the task authorization for the site; however, WR completed a Receptor survey in March 2021. WR contacted the Town of Marion and McDowell County Public Works and confirmed that no municipal water is available to the subject property or the surrounding area. WithersRavenel Our People. Your Success. 221 Sav-A-Stop– Incident #10748 WR Project # 23-0307-G Groundwater Monitoring Report July 2023 4 WR identified two water supply wells within 500 feet of the subject property (one inactive and one active). An additional twelve water supply wells were identified within 500 to 1,000 feet of the subject property. WR confirmed that the onsite water supply well is still present, but not currently in-use. The subject property and the adjacent property receive potable water from the supply well located at 77 Tom’s Creek Road. According to NCDEQ Source Water Assessment Program (SWAP) Info 2.0 website, a non-community transient water supply well is located approximately 500-feet north and upgradient from the site. The non-community transient water supply well is identified as K G’s Quick Stop Well #2 with PWS ID NC0156555. Per the mapping application, this well is in the vicinity of the water supply well that WR identified as WSW-77 Tom’s Creek which services the site and neighboring property. This non-community transient water supply well is located due west of the K & J Auto Incident, Incident # 3438. Tom’s Creek is located just west of the subject property. According to the National Wetlands Inventory website, Tom’s Creek is listed as a Freshwater Forested/Shrub Wetland habitat with a classification of PSS1A. Tom’s Creek discharges into the Catawba River approximately 2-miles south of the site. An unnamed, culverted, wet-weather ditch is located east of the site across US Hwy 221. The wet-weather ditch discharges into Tom’s Creek south of the subject property. Receptor information is provided on Table B-5A and illustrated on Figure 3. 4. Remediation Activities The following remediation activities have been completed at the site: • As part of the activities associated with this TA, WR along with AST mobilized to the site to complete an interim remedial action at the facility including the installation of ten injection borings (IP-01 through IP-10). Over the course of the injection activities completed at the site, 750 pounds (lb) of BOS200® material were introduced into the ten injection points surrounding MW-15 and EM-3. 5. Recommendations Based on the results of assessment and monitoring activities conducted at the site in association with this TA, WR recommends the following: • The incident manager consider closure of the site incident. WithersRavenel Our People. Your Success. 221 Sav-A-Stop– Incident #10748 WR Project # 23-0307-G Groundwater Monitoring Report July 2023 5 SECTION C. SITE HISTORY & SOURCE CHARACTERIZATION The following information summarizes the site history and characterization. 1. UST Information One 8,000-gallon gasoline underground storage tank (UST), one 6,000-gallon gasoline UST, one 4,000-gallon gasoline UST, one 2,000-gallon diesel UST, and one 1,000-gallon diesel UST are currently in use at the subject site. The three gasoline USTs were installed in 1976 and the two diesel USTs were installed in 1985. A release was discovered from the 4,000-gallon gasoline UST during an assessment of the adjacent incident (K&J Auto Sales, Incident #3438) in May 1993. The location of the site as depicted on the United States Geological Survey (USGS) Topographic Map is included as Figure 1. Site improvements, including current USTs and monitoring well locations are depicted on Figure 2. Table B-1 includes information regarding the USTs reportedly located on the property. 2. Description of Release/General Assessment History The following summary of the assessment history is based on WR’s review of historical files for the subject incident including: • Active Remediation Monitoring Report (January 2005) by S&ME A groundwater and soil vapor extraction remediation system that included nine extraction wells began operation on June 11, 1998. The remediation system was turned off in December 2004. Benzene, ethylbenzene, toluene, total xylenes, and MTBE concentrations were 980 micrograms per liter (µg/L), 190 µg/L, 1,300 µg/L, 1,200 µg/L, and 140 µg/L, respectively, in MW-15 in December 1993. When the remediation system was turned off in December 2004, benzene, ethylbenzene, toluene, total xylenes, and MTBE concentrations were 72 µg/L, 31 µg/L, <10 µg/L, 55 µg/L, and <2.0 µg/L, respectively, in MW-15. • In November 2020, WR performed a groundwater sampling event at the site. WR personnel purged and sampled monitoring wells EM-1, MW-14, and MW-15 and the on-site water supply well. Data for groundwater samples showed benzene and naphthalene exceeding 15A NCAC 2L Groundwater Quality Standards (2L Standards) in MW-15. Data for the groundwater samples obtained from monitoring wells MW-14 and EM-1 and supply well WSW did not indicate any compounds reported above the laboratory method detection limits (MDLs). • In March 2021, WR performed a groundwater sampling event at the site and conducted a receptor survey update. WR personnel purged and sampled monitoring well MW-15. Data for groundwater samples showed benzene and naphthalene exceeding 2L Standards in MW-15. Information regarding the receptor survey update is discussed in the Receptor Information and Information on Receptors/Potential Receptors sections. • In December 2021, WR performed a groundwater and soil sampling event at the site. WR personnel purged and sampled monitoring well MW-15 and collected two soil samples (WR-1 and WR-2) to a depth of 3 feet below ground surface (bgs) near monitoring wells MW-15 and EW-2. Data for groundwater samples showed benzene exceeding 2L Standards in MW-15. WithersRavenel Our People. Your Success. 221 Sav-A-Stop– Incident #10748 WR Project # 23-0307-G Groundwater Monitoring Report July 2023 6 Laboratory results for the soil samples WR-1 and WR-2 did not report any compounds at concentrations that exceeded the established soil-to-groundwater MSCCs. • In March 2022, WR personnel purged and sampled monitoring well MW-15. Benzene concentrations exceeded the NC 2L Standards. Several other constituents were detected exceeding laboratory detection limits but below NC 2L Standards. • Between June 14 and 15, 2022, an injection event was completed at the site. These activities were performed by AST employing a track mounted GeoProbe™ Direct-Push-Technology (DPT™) drilling rig. Over the course of the injection activities completed at the site, 750 lb of BOS200® material were introduced into the ten injection points. • In September 2022, WR personnel purged and sampled monitoring wells MW-15 and EM-3 and water supply well WSW. Analytical results for the samples collected from site monitoring wells did not indicate targeted VOCs at concentrations exceeding the laboratory’s method detection limits. • In March 2023, WR personnel purged and sampled monitoring wells MW-15 and EM-3 and water supply well WSW. Analytical results for the samples collected from site monitoring wells did not indicate targeted VOCs at concentrations exceeding the laboratory’s method detection limits. 3. Brief Description of Site Characteristics The property is located at 4613 US Highway 221 in an unincorporated area of mixed use residential and commercial properties within the Town of Marion, McDowell County, North Carolina (Figure 1). The site and surrounding properties are zoned for residential and commercial land use. The site includes a single-story slab-on-grade stone building with wood-framed roof located in the center of the property. The building on site is not currently occupied. Site features, the current UST areas, and monitoring well locations are depicted on Figure 2. The McDowell County Tax Department identifies the property comprising the site as parcel # 0793-00-57-1522, including 1.08 acres of land. The site is currently owned by Shams-Aldeen and Fatima Ghaleb. 4. Information on Receptors/Potential Receptors WR did not perform a receptor update in association with the task authorization for the site; however, WR completed a Receptor survey in March 2021. WR contacted the Town of Marion and McDowell County Public Works and confirmed that no municipal water is available to the subject property or the surrounding area. WR identified two water supply wells within 500 feet of the subject property (one inactive and one active). An additional twelve water supply wells were identified within 500 to 1000 feet of the subject property. WR confirmed that the onsite water supply well is active but not in-use. The subject property and the adjacent property receive potable water from the supply well located at 77 Tom’s Creek Road. WithersRavenel Our People. Your Success. 221 Sav-A-Stop– Incident #10748 WR Project # 23-0307-G Groundwater Monitoring Report July 2023 7 According to NCDEQ SWAP info 2.0 website, a non-community transient water supply well is located approximately 500-feet north and upgradient from the site. The non-community transient water supply well is identified as K G’s Quick Stop Well #2 with PWS ID NC0156555. Per the mapping application, this well is in the vicinity of the water supply well that WR identified as WSW- 77 Tom’s Creek which services the site and neighboring property. This non-community transient water supply well is located due west of the K & J Auto Incident, Incident # 3438. Tom’s Creek is located just west of the subject property. According to the National Wetlands Inventory website, Tom’s Creek is listed as a Freshwater Forested/Shrub Wetland habitat with a classification of PSS1A. Tom’s Creek discharges into the Catawba River approximately 2-miles south of the site. An unnamed, culverted, wet-weather ditch is located east of the site across US Hwy 221. The wet-weather ditch discharges into Tom’s Creek south of the subject property. Receptor information is provided on Table B-5A and illustrated on Figure 3. 5. Regional and Site Geology and Hydrology The Geologic Map of North Carolina depicts the site in the biotite granitic gneiss rocks of the Late to Middle Proterozoic rocks of the Blue Ridge Belt. The Geologic Map of North Carolina indicates the site is underlain by granitic to quartz monzonitic which includes mylonitized orthogneiss and para-gneiss with amphibolite, calc-silicate rock, and marble. According to the United States Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Web Soil Survey, the source area is underlain by Dillard loam (1 to 4 percent slope). Dillard loam is moderately well drained, found on mountain base and base slopes, and the parent material is loamy alluvium. SECTION D. GROUNDWATER SAMPLING – JUNE 2023 On June 16, 2023, WR personnel mobilized to the subject property to perform groundwater sampling activities at the facility in association with TA-02 under NCDEQ Contract # N70522-C. The scope of work for this project included the gauging, purging, and sampling of existing monitoring wells MW-15 and EM-3, water supply well WSW, and a field blank. The groundwater samples collected under TA-02 were submitted for laboratory analysis of VOCs by SM6200B. The following paragraphs describe the sampling activities and associated laboratory analytical results. Groundwater Sampling Activities Prior to the purging and sampling of the site monitoring wells on June 16, 2023, WR personnel opened and gauged those wells targeted for purging and sampling with an electronic water level indicator to determine the depth to groundwater at each well location. The depth to groundwater measurements in the monitoring wells ranged from 6.53 feet (ft) below the top of casing (ft-BTOC) in monitoring well EM-3 to 6.54 ft-BTOC in monitoring well MW-15. Based on historical groundwater elevations, groundwater flow is to the south. WithersRavenel Our People. Your Success. 221 Sav-A-Stop– Incident #10748 WR Project # 23-0307-G Groundwater Monitoring Report July 2023 8 Following gauging, monitoring wells were purged and sampled with separate, disposable polyethylene (PE) bailers for each well. Samples from the wells were decanted into pre-preserved laboratory provided sample containers. Samples collected from site monitoring wells were submitted via courier under chain-of-custody procedures to Waypoint Analytical in Charlotte, NC for testing by SM6200B. Laboratory Results Analytical results for the groundwater samples collected on June 16, 2023, did not report any compounds above the method detection limits. SECTION E. CONCLUSIONS AND RECOMMENDATIONS This report documents the results of field activities conducted at the site for TA-02 which included the purging and sampling of monitoring wells MW-15 and EM-3, water supply well WSW, and a field blank. Conclusions based on observations, analytical data and research relating to the release at the site combined with historical information include the following: • The site was occupied by K G’s Quick Stop at the time of the groundwater sampling activities. • Municipal water is not available to the subject property or the surrounding area. Two water supply wells (one inactive and one active) were identified within a 500-foot radius of the release and 12 water supply wells were identified between the 500 and 1,000-foot radius of the release area on the site. • There have been three consecutive sampling events (September 29, 2022, March 8, 2023, and June 16, 2023) with analytical data below the laboratory method detection limits since the injection of BOS200® material in June 2022. Based on the results of assessment and monitoring activities conducted at the site in association with this TA, WR recommends the following: • The incident manager consider closure of the site incident. WithersRavenel Our People. Your Success. FIGURES 500 FT 1,000 FT KBB MJ DRAWN BY: 08/02/2022 23-0307-G 1 SUBJECT SITE ±0.86 ACRE SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: GENERAL LOCATION MAP WithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com 1"=500 ' GRAPHIC SCALE 1 inch = 500 ft. 0 500250 1000 221 Sav-A-Stop TF#10748 4613 US Highway 221 North Marion, McDowell County, NC UST AREA MW-14 MW-15 EW-1 EW-2 EW-9 EM-3 EW-3 EW-4 EW-5 MW-9 MW-13 EW-8 EW-7 EW-6 US HIGHWAY 221MW-6 MW-5 EM-1 UST AREA T OM ' S C R E E K KBB MJ DRAWN BY: 08/02/2022 23-0307-G 2 SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: 221 Sav-A-Stop TF#10748 4613 US Highway 221 North Marion, McDowell County, NC SITE MAPWithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 | www.withersravenel.com 1"=30 ' LEGEND TYPE II MONITORING WELL LOCATION TYPE III MONITORING WELL LOCATION EXTRACTION WELL LOCATION WATER SUPPLY WELL LOCATION UST SYSTEM LOCATIONS NOTES: AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT. MONITORING AND EXTRACTION WELL LOCATIONS BASED ON SITE MAP PREPARED BY S&ME, INC., JULY 29, 2004. 3015 600 GRAPHIC SCALE 1" = 30' 500' 1000' TOM' S C R E E K US HIGHWAY 221TOMS C R E E K R O A D T O M S C R E E K ESTIMATED WATER LINE LOCATION THAT SERVICES SAV-A-STOP SITE AND NEIGHBORING PROPERTY WSW-187 TOMS CREEK WSW-126 MILLER POINT WSW-4805 HWY 221 WSW-4741 HWY 221 WSW-4701 HWY 221 WSW-4710 HWY 221 WSW-77 TOMS CREEK (NON-COMMUNITY TRANSIENT WATER SUPPLY WELL IDENTIFIED AS K G'S QUICK STOP WELL #2 WITH PWS ID NC0156555. WSW-4613 HWY 221 WSW-4582 HWY 221 WSW-4556 HWY 221 WSW-4548 HWY 221 WSW-4480 HWY 221WSW-4506 HWY 221 WSW-4541 HWY 221 WSW-4545 HWY 221 WSW-4476 HWY 221 ACCORDING TO THE TOWN OF MARION AND MCDOWELL COUNT: NO MUNICIPAL WATER AVAILABLE TO THE LOCAL AREA. SITE MJMJDRAWN BY:04/20/2123-0307-G3SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:RECEPTOR MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 license #: F-1479 | www.withersravenel.com1"=200 'GRAPHIC SCALE 1 inch = 200 ft. 0 200100 400 LEGEND TYPE III MONITORING WELL LOCATION SURFACE WATER BODY NOTES: 1.) 2017 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT.221 Sav-A-Stop4613 US Highway 221 NorthMarion, McDowell County, NC WithersRavenel Our People. Your Success. TABLES UST IDNumberCurrent/LastContentsPreviousContentsCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofUSTWas release associated with UST System? (Y/N)1 Gasoline Unknown 8,000 Single Wall Steel Unknown Unknown 5/3/1976 N2 Gasoline Unknown 6,000 Single Wall Steel Unknown Unknown 5/3/1976 N3 Gasoline Unknown 4,000 Single Wall Steel Unknown Unknown 5/3/1976 Y4 Diesel Unknown 2,000 Single Wall Steel Unknown Unknown 9/22/1985 N5 Diesel Unknown 1,000 Single Wall Steel Unknown Unknown 9/22/1985 NAST IDNumberCurrent/LastContentsPreviousContentsCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofASTWas release associated with AST System? (Y/N)IncidentNumberMaterialReleasedDateofReleaseIncident # 10748Gasoline May 1993Notes:1)Table B‐1Site History:  UST/AST System & Other Release Information221 Sav‐A‐StopDuring the assessment of K&J Auto Sales (Incident #3438), monitoring well MW‐15, located near the UST basin with the three gasoline USTs, had elevated concentrations of hydrocarbons.Unknown4613 US HWY 221 NCurrently in useMarion, McDowell County, NCInformation for USTs from historical site information.Incident # 10748Description of ReleasePage 1 of 1 Benzene Ethanol Ethylbenzene Isopropylbenzene (Cumene) Naphthalene Propylbenzene, n‐Toluene Trimethylbenzene, 1,2,4‐ Trimethylbenzene, 1,3,5‐Total Xylenes71‐43‐264‐17‐5 100‐41‐498‐82‐891‐20‐3 103‐65‐1 108‐88‐395‐63‐6 108‐67‐8 1330‐20‐7EM‐1 11/11/2020 <0.048 <27 <0.061 <0.054 <1 <0.087 <0.044 <0.054 <0.076 <0.15 6/14‐15/20229/29/2022 <0.500 <200 <0.500 <0.500 <1<0.500 <0.500 <0.500 <0.500 <0.5003/8/2023 <0.500 <200 <0.500 <0.500 <1<0.500 <0.500 <0.500 <0.500 <0.5006/16/2023 <0.500 NA <0.500 <0.500<2 <0.500 <0.500 <0.500 <0.500 <1MW‐14 11/11/2020 <0.048 <27 <0.061 <0.054 <0.19 <0.087 <0.044 <0.054 <0.076 <0.15 11/11/202012<279.1 0.72 6.2 2<0.044 <0.054 <0.076 1.53/30/202114.6<20058.1 2.03 21.2 5.45 8.72 21.6 3.46 12212/1/20211.47 3.51<3.00 <0.5004.31 0.702<0.5000.615<0.5002.903/15/20224.94 4.4<3.00 <0.5002.43 0.780<0.5000.577<0.500 <0.5006/14‐15/20229/29/2022 <0.500 <200 <0.500 <0.500 <1<0.500 <0.500 <0.500 <0.500 <0.5003/8/2023 <0.500 <200 <0.500 <0.500 <1<0.500 <0.500 <0.500 <0.500 <0.5006/16/2023 <0.500 NA <0.500 <0.500<2 <0.500 <0.500 <0.500 <0.500 <111/11/2020 <0.048 <27 <0.061 <0.054 <0.19 <0.087 <0.044 <0.054 <0.076 <0.15 9/29/2022 <0.500 <200 <0.500 <0.500 <1<0.500 <0.500 <0.500 <0.500 <0.5003/8/2023 <0.500 <200 <0.500 <0.500 <1<0.500 <0.500 <0.500 <0.500 <0.5006/16/2023 <0.500 NA <0.500 <0.500<2 <0.500 <0.500 <0.500 <0.500 <11 4000 600 70 6 70 600 400 400 50051 97 97 250 12 80 11 390 630 6705,000 4,000,000 80,000 30,500 6,000 26,100 260,000 28,500 24,100 50000Notes:1)2)3)4)5)RESULT= Result Exceeds Laboratory Detection LimitsRESULT= Result Exceeds NC 2L StandardRESULT= Result Exceeds Ten Times the NC Surface Water StandardsRESULT= Result Exceeds GCLNA ‐ Not AnalyzedWSWGCLs for Groundwater = NCDEQ Gross Contamination Levels (GCLs) for Groundwater.All results provided in ug/L (micrograms per liter) or parts per billion.NC 2L Standard NC 2L Standard ‐ North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.GCLs for GroundwaterCompounds analyzed for by laboratory but not listed were not found above laboratory detection limits. See the laboratory report included  in  Appendix for a full list of constituents. TABLE B‐4SUMMARY OF GROUNDWATER ANALYTICAL RESULTS221 Sav‐A‐StopIncident # 107484613 US HWY 221 NDateCollectedNorth Carolina Surface Water Standards6200B ‐ Volatile Organic CompoundsMarion, McDowell County, NCAnalytical MethodSampleIDBOS200® InjectionBOS200® InjectionEM‐3MW‐15Page 1 of 1 Site  WSW‐4613 Hwy 221 079300571522 4613 US Hwy 221 McDowell Shams‐Aldeen & Fatima Ghaleb 435 Gun Club RoadBostic, NC 28018 According to  Property Owner:   Well is Inactive Property recieves potable water from 77 Toms Creek Rd Unk Unk 100 Downgradient WSW‐4582 Hwy 221 079300578598 US Hwy 221 McDowell Timothy Washburn PO Box 2327 Marion, NC 28752 Potable Unk Unk 222  (estimated)Cross Gradient WSW‐4548  Hwy 221 079300576204 4548 Hwy 221 N McDowell Calvary Missionary Baptist  Church of McDowell County 1719 Toms Creek Rd Marion, NC 28752 Potable Unk Unk 461 Downgradient WSW‐4506 Hwy 221 079300573091 4506 US Hwy 221 McDowell Robert Peters 570 W 225 NPrinceton, IN 47670‐8537 Unknown Unk Unk 515(estimated)Downgradient WSW‐4480 Hwy 221 079300579162 4480 Hwy 221 N McDowell Lucas Davis 4480 Hwy 221 NMarion, NC 28752 Potable Unk Unk 582 Downgradient WSW‐4556 Hwy 221 079300670306 4556 Hwy 221 N McDowell Michael Mace 4556 US Hwy 221 NMarion, NC 28752 Potable Unk Unk 595 Cross Gradient WSW‐4701 Hwy 221 079300580143 4701 Hwy 221 N McDowell Mary Louise Frick 4701 US Hwy 221 NMarion, NC 28752 Potable Unk Unk 673 Upgradient 079300478900 77 Toms Creek McDowell Joseph Buchanan 77 Toms Creek RdMarion, NC 28752‐6916 Potable Unk Unk 680 Upgradient WSW‐4476 Hwy 221 079300569821 4476 Hwy 221 N McDowell John Ray Davis III 4476 Hwy 221 NMarion, NC 28752 Potable Unk Unk 816 Downgradient WSW‐4741 Hwy 221 079300580341 4741 Hwy 221 N McDowell Melanie Ann Rose 4741 US Hwy 221 NMarion, NC 28752 Potable Unk Unk 845 Upgradient WSW‐4710 Hwy 221 079300584270 4710 Hwy 221 N McDowell Remnant Freewill Baptist Church 4710 US Hwy 221 NMarion, NC 28752 Potable Unk Unk 962 Upgradient WSW‐4805 Hwy 221 079300580438 4805 Hwy 221 N McDowell James Kelly Burnette 4805 US Hwy 221 N Marion, NC 28752 Potable Unk Unk 996 Upgradient WSW‐126 Miller  Point 079300487364 126 Miller Point Drive McDowell Ruby Miller 126 Miller Point Drive Marion, NC 28752 Potable Unk Unk 1000 Upgradient WSW‐187 Tom's  Creek 079300485985 187 Tom's Creek Road McDowell Antelmo Sanchez 187 Tom's Creek Rd Marion, NC 28752 Potable Unk Unk 1000 Upgradient Note:  WSW‐77 Tom's Creek supplies potable water to 77 Tom's Creek Road, 4613 US Hwy 221 (Site) and 4573 US Hwy 221. WSW‐77  Tom's Creek (Non‐ Community Transient Water Supply Well ‐ PWS NC0156555)        1)  Well location address and property owner information was obtained from the County GIS Department and / or historical reporting by others. Well Distance from Source Area(feet) Notes:  PIN Well Depth(feet)Property Owner        3) Site WSW‐4613 Hwy 221 was labeled as WSW‐1 on the laboratory report for the June 16, 2023 sampling event.       2)  Well distance from source area are estimated best on field observations. Location Relative to Groundwater Flow Well Screen Interval(feet)Well UseWell ID Property Owner AddressProperty Address  County TABLE B‐5APUBLIC & PRIVATE WATER SUPPLY WELL INFORMATION 221 Sav‐A‐Stop 4613 US HWY 221 NMarion, McDowell County, NC UST #: AS‐966 Incident Number: Incident # 10748 Page 1 of 1 WithersRavenel Our People. Your Success. APPENDIX A FIELD NOTES & PHOTOGRAPHIC RECORD WithersRavenel Our People. Your Success. PHOTO 1 View of site looking north PHOTO 2 View of EW-3 looking north WithersRavenel Our People. Your Success. PHOTO 3 View of MW-15 looking north PHOTO 4 View of onsite water supply well (WSW) WithersRavenel Our People. Your Success. APPENDIX B LABORATORY ANALYTICAL REPORT & CHAIN OF CUSTODY   Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.   7/7/2023 Withers & Ravenel Flora D'Souza 115 Mackenan Dr. BUILDING 117 Cary, NC, 27511 Ref: Analytical Testing Lab Report Number: 23-172-0007 Client Project Description: 221 Sav-A-Stop 23-0307-G Dear Flora D'Souza: Waypoint Analytical, LLC (Charlotte) received sample(s) on 6/21/2023 for the analyses presented in the following report. The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method. The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance. The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as- received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely, Angela D Overcash Senior Project Manager Page 1 of 24 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202337735State ProgramNorth Carolina 12/31/2023402State ProgramNorth Carolina 07/31/202399012State ProgramSouth Carolina 12/31/202299012State ProgramSouth Carolina Page 1 of 1 00016/23-172-0007 Page 2 of 24 Report Number: Sample Summary Table Client Project Description: 23-172-0007 221 Sav-A-Stop 23-0307-G Lab No Client Sample ID Matrix Date Collected Date Received Method Lab ID 06/16/2023 11:35Aqueous 98905 MW-15 06/21/2023 10:50 6200B 06/16/2023 12:15Aqueous 98906 EM-3 06/21/2023 10:50 6200B 06/16/2023 12:40Aqueous 98907 WSW-1 06/21/2023 10:50 6200B 06/16/2023 13:00Aqueous 98908 Trip Blank 06/21/2023 10:50 6200B : Pace Analytical - Huntersville, NC, Huntersville, NC Page 3 of 24 #=CL# July 07, 2023 LIMS USE: FR - DANYALE LOVE LIMS OBJECT ID: 92674982 92674982 Project: Pace Project No.: RE: Danyale LoveWaypoint Analytical, LLC449 Springbrook RdCharlotte, NC 28217 23-172-0007 (3838EXP) Dear Danyale Love: Enclosed are the analytical results for sample(s) received by the laboratory on June 28, 2023. The results relate only to thesamples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and thelaboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report. The test results provided in this final report were generated by each of the following laboratories within the Pace Network: • Pace Analytical Services - Charlotte Revision 1: Client wants to report without J-Flags. If you have any questions concerning this report, please feel free to contact me. Sincerely, Bonnie Vang for matthew.brainard@pacelabs.com Project Manager Matthew Brainard (704)875-9092 Enclosures cc: Angela Overcash, Waypoint Analytical REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 1 of 19 Page 4 of 24 #=CP# CERTIFICATIONS Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Pace Analytical Services Charlotte South Carolina Laboratory ID: 99006 9800 Kincey Ave. Ste 100, Huntersville, NC 28078 North Carolina Drinking Water Certification #: 37706 North Carolina Field Services Certification #: 5342 North Carolina Wastewater Certification #: 12 South Carolina Laboratory ID: 99006 South Carolina Certification #: 99006001 South Carolina Drinking Water Cert. #: 99006003 Florida/NELAP Certification #: E87627 Kentucky UST Certification #: 84 Louisiana DoH Drinking Water #: LA029 Virginia/VELAP Certification #: 460221 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 2 of 19 Page 5 of 24 #=SA# SAMPLE ANALYTE COUNT Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Lab ID Sample ID Method Analytes Reported LaboratoryAnalysts 92674982001 MW-15 SM 6200B 63 PASI-CLMB 92674982002 EM-3 SM 6200B 63 PASI-CLMB 92674982003 WSW-1 SM 6200B 63 PASI-CLMB 92674982004 TRIP BLANK SM 6200B 63 PASI-CLMB PASI-C = Pace Analytical Services - Charlotte REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC. Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 3 of 19 Page 6 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Sample: MW-15 Lab ID: 92674982001 Collected: 06/16/23 11:35 Received: 06/28/23 17:23 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 06/29/23 18:22 71-43-20.50 1 Bromobenzene ND ug/L 06/29/23 18:22 108-86-10.50 1 Bromochloromethane ND ug/L 06/29/23 18:22 74-97-50.50 1 Bromodichloromethane ND ug/L 06/29/23 18:22 75-27-40.50 1 Bromoform ND ug/L 06/29/23 18:22 75-25-20.50 1 Bromomethane ND ug/L 06/29/23 18:22 74-83-95.0 1 n-Butylbenzene ND ug/L 06/29/23 18:22 104-51-80.50 1 sec-Butylbenzene ND ug/L 06/29/23 18:22 135-98-80.50 1 tert-Butylbenzene ND ug/L 06/29/23 18:22 98-06-60.50 1 Carbon tetrachloride ND ug/L 06/29/23 18:22 56-23-50.50 1 Chlorobenzene ND ug/L 06/29/23 18:22 108-90-70.50 1 Chloroethane ND ug/L 06/29/23 18:22 75-00-31.0 1 Chloroform ND ug/L 06/29/23 18:22 67-66-30.50 1 Chloromethane ND ug/L 06/29/23 18:22 74-87-31.0 1 2-Chlorotoluene ND ug/L 06/29/23 18:22 95-49-80.50 1 4-Chlorotoluene ND ug/L 06/29/23 18:22 106-43-40.50 1 1,2-Dibromo-3-chloropropane ND ug/L 06/29/23 18:22 96-12-81.0 1 Dibromochloromethane ND ug/L 06/29/23 18:22 124-48-10.50 1 1,2-Dibromoethane (EDB) ND ug/L 06/29/23 18:22 106-93-40.50 1 Dibromomethane ND ug/L 06/29/23 18:22 74-95-30.50 1 1,2-Dichlorobenzene ND ug/L 06/29/23 18:22 95-50-10.50 1 1,3-Dichlorobenzene ND ug/L 06/29/23 18:22 541-73-10.50 1 1,4-Dichlorobenzene ND ug/L 06/29/23 18:22 106-46-70.50 1 Dichlorodifluoromethane ND ug/L 06/29/23 18:22 75-71-80.50 1 1,1-Dichloroethane ND ug/L 06/29/23 18:22 75-34-30.50 1 1,2-Dichloroethane ND ug/L 06/29/23 18:22 107-06-20.50 1 1,1-Dichloroethene ND ug/L 06/29/23 18:22 75-35-40.50 1 cis-1,2-Dichloroethene ND ug/L 06/29/23 18:22 156-59-20.50 1 trans-1,2-Dichloroethene ND ug/L 06/29/23 18:22 156-60-50.50 1 1,2-Dichloropropane ND ug/L 06/29/23 18:22 78-87-50.50 1 1,3-Dichloropropane ND ug/L 06/29/23 18:22 142-28-90.50 1 2,2-Dichloropropane ND ug/L 06/29/23 18:22 594-20-70.50 1 1,1-Dichloropropene ND ug/L 06/29/23 18:22 563-58-60.50 1 cis-1,3-Dichloropropene ND ug/L 06/29/23 18:22 10061-01-50.50 1 trans-1,3-Dichloropropene ND ug/L 06/29/23 18:22 10061-02-60.50 1 Diisopropyl ether ND ug/L 06/29/23 18:22 108-20-30.50 1 Ethylbenzene ND ug/L 06/29/23 18:22 100-41-40.50 1 Hexachloro-1,3-butadiene ND ug/L 06/29/23 18:22 87-68-32.0 1 Isopropylbenzene (Cumene) ND ug/L 06/29/23 18:22 98-82-80.50 1 Methylene Chloride ND ug/L 06/29/23 18:22 75-09-22.0 1 Methyl-tert-butyl ether ND ug/L 06/29/23 18:22 1634-04-40.50 1 Naphthalene ND ug/L 06/29/23 18:22 91-20-32.0 1 n-Propylbenzene ND ug/L 06/29/23 18:22 103-65-10.50 1 Styrene ND ug/L 06/29/23 18:22 100-42-50.50 1 1,1,1,2-Tetrachloroethane ND ug/L 06/29/23 18:22 630-20-60.50 1 1,1,2,2-Tetrachloroethane ND ug/L 06/29/23 18:22 79-34-50.50 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 4 of 19 Page 7 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Sample: MW-15 Lab ID: 92674982001 Collected: 06/16/23 11:35 Received: 06/28/23 17:23 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Tetrachloroethene ND ug/L 06/29/23 18:22 127-18-40.50 1 Toluene ND ug/L 06/29/23 18:22 108-88-30.50 1 1,2,3-Trichlorobenzene ND ug/L 06/29/23 18:22 87-61-62.0 1 1,2,4-Trichlorobenzene ND ug/L 06/29/23 18:22 120-82-12.0 1 1,1,1-Trichloroethane ND ug/L 06/29/23 18:22 71-55-60.50 1 1,1,2-Trichloroethane ND ug/L 06/29/23 18:22 79-00-50.50 1 Trichloroethene ND ug/L 06/29/23 18:22 79-01-60.50 1 Trichlorofluoromethane ND ug/L 06/29/23 18:22 75-69-41.0 1 1,2,3-Trichloropropane ND ug/L 06/29/23 18:22 96-18-40.50 1 1,2,4-Trimethylbenzene ND ug/L 06/29/23 18:22 95-63-60.50 1 1,3,5-Trimethylbenzene ND ug/L 06/29/23 18:22 108-67-80.50 1 Vinyl chloride ND ug/L 06/29/23 18:22 75-01-41.0 1 m&p-Xylene ND ug/L 06/29/23 18:22 179601-23-11.0 1 o-Xylene ND ug/L 06/29/23 18:22 95-47-60.50 1Surrogates1,2-Dichloroethane-d4 (S) 91 %06/29/23 18:22 17060-07-070-130 1 4-Bromofluorobenzene (S) 99 %06/29/23 18:22 460-00-470-130 1 Toluene-d8 (S) 99 %06/29/23 18:22 2037-26-570-130 1 Sample: EM-3 Lab ID: 92674982002 Collected: 06/16/23 12:15 Received: 06/28/23 17:23 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 06/29/23 18:40 71-43-20.50 1 Bromobenzene ND ug/L 06/29/23 18:40 108-86-10.50 1 Bromochloromethane ND ug/L 06/29/23 18:40 74-97-50.50 1 Bromodichloromethane ND ug/L 06/29/23 18:40 75-27-40.50 1 Bromoform ND ug/L 06/29/23 18:40 75-25-20.50 1 Bromomethane ND ug/L 06/29/23 18:40 74-83-95.0 1 n-Butylbenzene ND ug/L 06/29/23 18:40 104-51-80.50 1 sec-Butylbenzene ND ug/L 06/29/23 18:40 135-98-80.50 1 tert-Butylbenzene ND ug/L 06/29/23 18:40 98-06-60.50 1 Carbon tetrachloride ND ug/L 06/29/23 18:40 56-23-50.50 1 Chlorobenzene ND ug/L 06/29/23 18:40 108-90-70.50 1 Chloroethane ND ug/L 06/29/23 18:40 75-00-31.0 1 Chloroform ND ug/L 06/29/23 18:40 67-66-30.50 1 Chloromethane ND ug/L 06/29/23 18:40 74-87-31.0 1 2-Chlorotoluene ND ug/L 06/29/23 18:40 95-49-80.50 1 4-Chlorotoluene ND ug/L 06/29/23 18:40 106-43-40.50 1 1,2-Dibromo-3-chloropropane ND ug/L 06/29/23 18:40 96-12-81.0 1 Dibromochloromethane ND ug/L 06/29/23 18:40 124-48-10.50 1 1,2-Dibromoethane (EDB) ND ug/L 06/29/23 18:40 106-93-40.50 1 Dibromomethane ND ug/L 06/29/23 18:40 74-95-30.50 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 5 of 19 Page 8 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Sample: EM-3 Lab ID: 92674982002 Collected: 06/16/23 12:15 Received: 06/28/23 17:23 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,2-Dichlorobenzene ND ug/L 06/29/23 18:40 95-50-10.50 1 1,3-Dichlorobenzene ND ug/L 06/29/23 18:40 541-73-10.50 1 1,4-Dichlorobenzene ND ug/L 06/29/23 18:40 106-46-70.50 1 Dichlorodifluoromethane ND ug/L 06/29/23 18:40 75-71-80.50 1 1,1-Dichloroethane ND ug/L 06/29/23 18:40 75-34-30.50 1 1,2-Dichloroethane ND ug/L 06/29/23 18:40 107-06-20.50 1 1,1-Dichloroethene ND ug/L 06/29/23 18:40 75-35-40.50 1 cis-1,2-Dichloroethene ND ug/L 06/29/23 18:40 156-59-20.50 1 trans-1,2-Dichloroethene ND ug/L 06/29/23 18:40 156-60-50.50 1 1,2-Dichloropropane ND ug/L 06/29/23 18:40 78-87-50.50 1 1,3-Dichloropropane ND ug/L 06/29/23 18:40 142-28-90.50 1 2,2-Dichloropropane ND ug/L 06/29/23 18:40 594-20-70.50 1 1,1-Dichloropropene ND ug/L 06/29/23 18:40 563-58-60.50 1 cis-1,3-Dichloropropene ND ug/L 06/29/23 18:40 10061-01-50.50 1 trans-1,3-Dichloropropene ND ug/L 06/29/23 18:40 10061-02-60.50 1 Diisopropyl ether ND ug/L 06/29/23 18:40 108-20-30.50 1 Ethylbenzene ND ug/L 06/29/23 18:40 100-41-40.50 1 Hexachloro-1,3-butadiene ND ug/L 06/29/23 18:40 87-68-32.0 1 Isopropylbenzene (Cumene) ND ug/L 06/29/23 18:40 98-82-80.50 1 Methylene Chloride ND ug/L 06/29/23 18:40 75-09-22.0 1 Methyl-tert-butyl ether ND ug/L 06/29/23 18:40 1634-04-40.50 1 Naphthalene ND ug/L 06/29/23 18:40 91-20-32.0 1 n-Propylbenzene ND ug/L 06/29/23 18:40 103-65-10.50 1 Styrene ND ug/L 06/29/23 18:40 100-42-50.50 1 1,1,1,2-Tetrachloroethane ND ug/L 06/29/23 18:40 630-20-60.50 1 1,1,2,2-Tetrachloroethane ND ug/L 06/29/23 18:40 79-34-50.50 1 Tetrachloroethene ND ug/L 06/29/23 18:40 127-18-40.50 1 Toluene ND ug/L 06/29/23 18:40 108-88-30.50 1 1,2,3-Trichlorobenzene ND ug/L 06/29/23 18:40 87-61-62.0 1 1,2,4-Trichlorobenzene ND ug/L 06/29/23 18:40 120-82-12.0 1 1,1,1-Trichloroethane ND ug/L 06/29/23 18:40 71-55-60.50 1 1,1,2-Trichloroethane ND ug/L 06/29/23 18:40 79-00-50.50 1 Trichloroethene ND ug/L 06/29/23 18:40 79-01-60.50 1 Trichlorofluoromethane ND ug/L 06/29/23 18:40 75-69-41.0 1 1,2,3-Trichloropropane ND ug/L 06/29/23 18:40 96-18-40.50 1 1,2,4-Trimethylbenzene ND ug/L 06/29/23 18:40 95-63-60.50 1 1,3,5-Trimethylbenzene ND ug/L 06/29/23 18:40 108-67-80.50 1 Vinyl chloride ND ug/L 06/29/23 18:40 75-01-41.0 1 m&p-Xylene ND ug/L 06/29/23 18:40 179601-23-11.0 1 o-Xylene ND ug/L 06/29/23 18:40 95-47-60.50 1 Surrogates 1,2-Dichloroethane-d4 (S) 92 %06/29/23 18:40 17060-07-070-130 1 4-Bromofluorobenzene (S) 100 %06/29/23 18:40 460-00-470-130 1 Toluene-d8 (S) 97 %06/29/23 18:40 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 6 of 19 Page 9 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Sample: WSW-1 Lab ID: 92674982003 Collected: 06/16/23 12:40 Received: 06/28/23 17:23 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 06/29/23 18:58 71-43-20.50 1 Bromobenzene ND ug/L 06/29/23 18:58 108-86-10.50 1 Bromochloromethane ND ug/L 06/29/23 18:58 74-97-50.50 1 Bromodichloromethane ND ug/L 06/29/23 18:58 75-27-40.50 1 Bromoform ND ug/L 06/29/23 18:58 75-25-20.50 1 Bromomethane ND ug/L 06/29/23 18:58 74-83-95.0 1 n-Butylbenzene ND ug/L 06/29/23 18:58 104-51-80.50 1 sec-Butylbenzene ND ug/L 06/29/23 18:58 135-98-80.50 1 tert-Butylbenzene ND ug/L 06/29/23 18:58 98-06-60.50 1 Carbon tetrachloride ND ug/L 06/29/23 18:58 56-23-50.50 1 Chlorobenzene ND ug/L 06/29/23 18:58 108-90-70.50 1 Chloroethane ND ug/L 06/29/23 18:58 75-00-31.0 1 Chloroform ND ug/L 06/29/23 18:58 67-66-30.50 1 Chloromethane ND ug/L 06/29/23 18:58 74-87-31.0 1 2-Chlorotoluene ND ug/L 06/29/23 18:58 95-49-80.50 1 4-Chlorotoluene ND ug/L 06/29/23 18:58 106-43-40.50 1 1,2-Dibromo-3-chloropropane ND ug/L 06/29/23 18:58 96-12-81.0 1 Dibromochloromethane ND ug/L 06/29/23 18:58 124-48-10.50 1 1,2-Dibromoethane (EDB) ND ug/L 06/29/23 18:58 106-93-40.50 1 Dibromomethane ND ug/L 06/29/23 18:58 74-95-30.50 1 1,2-Dichlorobenzene ND ug/L 06/29/23 18:58 95-50-10.50 1 1,3-Dichlorobenzene ND ug/L 06/29/23 18:58 541-73-10.50 1 1,4-Dichlorobenzene ND ug/L 06/29/23 18:58 106-46-70.50 1 Dichlorodifluoromethane ND ug/L 06/29/23 18:58 75-71-80.50 1 1,1-Dichloroethane ND ug/L 06/29/23 18:58 75-34-30.50 1 1,2-Dichloroethane ND ug/L 06/29/23 18:58 107-06-20.50 1 1,1-Dichloroethene ND ug/L 06/29/23 18:58 75-35-40.50 1 cis-1,2-Dichloroethene ND ug/L 06/29/23 18:58 156-59-20.50 1 trans-1,2-Dichloroethene ND ug/L 06/29/23 18:58 156-60-50.50 1 1,2-Dichloropropane ND ug/L 06/29/23 18:58 78-87-50.50 1 1,3-Dichloropropane ND ug/L 06/29/23 18:58 142-28-90.50 1 2,2-Dichloropropane ND ug/L 06/29/23 18:58 594-20-70.50 1 1,1-Dichloropropene ND ug/L 06/29/23 18:58 563-58-60.50 1 cis-1,3-Dichloropropene ND ug/L 06/29/23 18:58 10061-01-50.50 1 trans-1,3-Dichloropropene ND ug/L 06/29/23 18:58 10061-02-60.50 1 Diisopropyl ether ND ug/L 06/29/23 18:58 108-20-30.50 1 Ethylbenzene ND ug/L 06/29/23 18:58 100-41-40.50 1 Hexachloro-1,3-butadiene ND ug/L 06/29/23 18:58 87-68-32.0 1 Isopropylbenzene (Cumene) ND ug/L 06/29/23 18:58 98-82-80.50 1 Methylene Chloride ND ug/L 06/29/23 18:58 75-09-22.0 1 Methyl-tert-butyl ether ND ug/L 06/29/23 18:58 1634-04-40.50 1 Naphthalene ND ug/L 06/29/23 18:58 91-20-32.0 1 n-Propylbenzene ND ug/L 06/29/23 18:58 103-65-10.50 1 Styrene ND ug/L 06/29/23 18:58 100-42-50.50 1 1,1,1,2-Tetrachloroethane ND ug/L 06/29/23 18:58 630-20-60.50 1 1,1,2,2-Tetrachloroethane ND ug/L 06/29/23 18:58 79-34-50.50 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 7 of 19 Page 10 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Sample: WSW-1 Lab ID: 92674982003 Collected: 06/16/23 12:40 Received: 06/28/23 17:23 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Tetrachloroethene ND ug/L 06/29/23 18:58 127-18-40.50 1 Toluene ND ug/L 06/29/23 18:58 108-88-30.50 1 1,2,3-Trichlorobenzene ND ug/L 06/29/23 18:58 87-61-62.0 1 1,2,4-Trichlorobenzene ND ug/L 06/29/23 18:58 120-82-12.0 1 1,1,1-Trichloroethane ND ug/L 06/29/23 18:58 71-55-60.50 1 1,1,2-Trichloroethane ND ug/L 06/29/23 18:58 79-00-50.50 1 Trichloroethene ND ug/L 06/29/23 18:58 79-01-60.50 1 Trichlorofluoromethane ND ug/L 06/29/23 18:58 75-69-41.0 1 1,2,3-Trichloropropane ND ug/L 06/29/23 18:58 96-18-40.50 1 1,2,4-Trimethylbenzene ND ug/L 06/29/23 18:58 95-63-60.50 1 1,3,5-Trimethylbenzene ND ug/L 06/29/23 18:58 108-67-80.50 1 Vinyl chloride ND ug/L 06/29/23 18:58 75-01-41.0 1 m&p-Xylene ND ug/L 06/29/23 18:58 179601-23-11.0 1 o-Xylene ND ug/L 06/29/23 18:58 95-47-60.50 1Surrogates1,2-Dichloroethane-d4 (S) 92 %06/29/23 18:58 17060-07-070-130 1 4-Bromofluorobenzene (S) 100 %06/29/23 18:58 460-00-470-130 1 Toluene-d8 (S) 98 %06/29/23 18:58 2037-26-570-130 1 Sample: TRIP BLANK Lab ID: 92674982004 Collected: 06/16/23 13:00 Received: 06/28/23 17:23 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV Benzene ND ug/L 06/29/23 15:04 71-43-20.50 1 Bromobenzene ND ug/L 06/29/23 15:04 108-86-10.50 1 Bromochloromethane ND ug/L 06/29/23 15:04 74-97-50.50 1 Bromodichloromethane ND ug/L 06/29/23 15:04 75-27-40.50 1 Bromoform ND ug/L 06/29/23 15:04 75-25-20.50 1 Bromomethane ND ug/L 06/29/23 15:04 74-83-95.0 1 n-Butylbenzene ND ug/L 06/29/23 15:04 104-51-80.50 1 sec-Butylbenzene ND ug/L 06/29/23 15:04 135-98-80.50 1 tert-Butylbenzene ND ug/L 06/29/23 15:04 98-06-60.50 1 Carbon tetrachloride ND ug/L 06/29/23 15:04 56-23-50.50 1 Chlorobenzene ND ug/L 06/29/23 15:04 108-90-70.50 1 Chloroethane ND ug/L 06/29/23 15:04 75-00-31.0 1 Chloroform ND ug/L 06/29/23 15:04 67-66-30.50 1 Chloromethane ND ug/L 06/29/23 15:04 74-87-31.0 1 2-Chlorotoluene ND ug/L 06/29/23 15:04 95-49-80.50 1 4-Chlorotoluene ND ug/L 06/29/23 15:04 106-43-40.50 1 1,2-Dibromo-3-chloropropane ND ug/L 06/29/23 15:04 96-12-81.0 1 Dibromochloromethane ND ug/L 06/29/23 15:04 124-48-10.50 1 1,2-Dibromoethane (EDB) ND ug/L 06/29/23 15:04 106-93-40.50 1 Dibromomethane ND ug/L 06/29/23 15:04 74-95-30.50 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 8 of 19 Page 11 of 24 #=AR# ANALYTICAL RESULTS Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Sample: TRIP BLANK Lab ID: 92674982004 Collected: 06/16/23 13:00 Received: 06/28/23 17:23 Matrix: Water Parameters Results Units DF Prepared Analyzed CAS No. QualReport Limit Analytical Method: SM 6200B Pace Analytical Services - Charlotte 6200B MSV 1,2-Dichlorobenzene ND ug/L 06/29/23 15:04 95-50-10.50 1 1,3-Dichlorobenzene ND ug/L 06/29/23 15:04 541-73-10.50 1 1,4-Dichlorobenzene ND ug/L 06/29/23 15:04 106-46-70.50 1 Dichlorodifluoromethane ND ug/L 06/29/23 15:04 75-71-80.50 1 1,1-Dichloroethane ND ug/L 06/29/23 15:04 75-34-30.50 1 1,2-Dichloroethane ND ug/L 06/29/23 15:04 107-06-20.50 1 1,1-Dichloroethene ND ug/L 06/29/23 15:04 75-35-40.50 1 cis-1,2-Dichloroethene ND ug/L 06/29/23 15:04 156-59-20.50 1 trans-1,2-Dichloroethene ND ug/L 06/29/23 15:04 156-60-50.50 1 1,2-Dichloropropane ND ug/L 06/29/23 15:04 78-87-50.50 1 1,3-Dichloropropane ND ug/L 06/29/23 15:04 142-28-90.50 1 2,2-Dichloropropane ND ug/L 06/29/23 15:04 594-20-70.50 1 1,1-Dichloropropene ND ug/L 06/29/23 15:04 563-58-60.50 1 cis-1,3-Dichloropropene ND ug/L 06/29/23 15:04 10061-01-50.50 1 trans-1,3-Dichloropropene ND ug/L 06/29/23 15:04 10061-02-60.50 1 Diisopropyl ether ND ug/L 06/29/23 15:04 108-20-30.50 1 Ethylbenzene ND ug/L 06/29/23 15:04 100-41-40.50 1 Hexachloro-1,3-butadiene ND ug/L 06/29/23 15:04 87-68-32.0 1 Isopropylbenzene (Cumene) ND ug/L 06/29/23 15:04 98-82-80.50 1 Methylene Chloride ND ug/L 06/29/23 15:04 75-09-22.0 1 Methyl-tert-butyl ether ND ug/L 06/29/23 15:04 1634-04-40.50 1 Naphthalene ND ug/L 06/29/23 15:04 91-20-32.0 1 n-Propylbenzene ND ug/L 06/29/23 15:04 103-65-10.50 1 Styrene ND ug/L 06/29/23 15:04 100-42-50.50 1 1,1,1,2-Tetrachloroethane ND ug/L 06/29/23 15:04 630-20-60.50 1 1,1,2,2-Tetrachloroethane ND ug/L 06/29/23 15:04 79-34-50.50 1 Tetrachloroethene ND ug/L 06/29/23 15:04 127-18-40.50 1 Toluene ND ug/L 06/29/23 15:04 108-88-30.50 1 1,2,3-Trichlorobenzene ND ug/L 06/29/23 15:04 87-61-62.0 1 1,2,4-Trichlorobenzene ND ug/L 06/29/23 15:04 120-82-12.0 1 1,1,1-Trichloroethane ND ug/L 06/29/23 15:04 71-55-60.50 1 1,1,2-Trichloroethane ND ug/L 06/29/23 15:04 79-00-50.50 1 Trichloroethene ND ug/L 06/29/23 15:04 79-01-60.50 1 Trichlorofluoromethane ND ug/L 06/29/23 15:04 75-69-41.0 1 1,2,3-Trichloropropane ND ug/L 06/29/23 15:04 96-18-40.50 1 1,2,4-Trimethylbenzene ND ug/L 06/29/23 15:04 95-63-60.50 1 1,3,5-Trimethylbenzene ND ug/L 06/29/23 15:04 108-67-80.50 1 Vinyl chloride ND ug/L 06/29/23 15:04 75-01-41.0 1 m&p-Xylene ND ug/L 06/29/23 15:04 179601-23-11.0 1 o-Xylene ND ug/L 06/29/23 15:04 95-47-60.50 1 Surrogates 1,2-Dichloroethane-d4 (S) 92 %06/29/23 15:04 17060-07-070-130 1 4-Bromofluorobenzene (S) 100 %06/29/23 15:04 460-00-470-130 1 Toluene-d8 (S) 96 %06/29/23 15:04 2037-26-570-130 1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 9 of 19 Page 12 of 24 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. QC Batch: QC Batch Method: Analysis Method: Analysis Description: 783884 SM 6200B SM 6200B 6200B MSV Laboratory: Pace Analytical Services - Charlotte Associated Lab Samples: 92674982001, 92674982002, 92674982003, 92674982004 Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 4065448 Associated Lab Samples:92674982001, 92674982002, 92674982003, 92674982004 Matrix: Water Analyzed 1,1,1,2-Tetrachloroethane ug/L ND 0.50 06/29/23 14:47 1,1,1-Trichloroethane ug/L ND 0.50 06/29/23 14:47 1,1,2,2-Tetrachloroethane ug/L ND 0.50 06/29/23 14:47 1,1,2-Trichloroethane ug/L ND 0.50 06/29/23 14:47 1,1-Dichloroethane ug/L ND 0.50 06/29/23 14:47 1,1-Dichloroethene ug/L ND 0.50 06/29/23 14:47 1,1-Dichloropropene ug/L ND 0.50 06/29/23 14:47 1,2,3-Trichlorobenzene ug/L ND 2.0 06/29/23 14:47 1,2,3-Trichloropropane ug/L ND 0.50 06/29/23 14:47 1,2,4-Trichlorobenzene ug/L ND 2.0 06/29/23 14:47 1,2,4-Trimethylbenzene ug/L ND 0.50 06/29/23 14:47 1,2-Dibromo-3-chloropropane ug/L ND 1.0 06/29/23 14:47 1,2-Dibromoethane (EDB) ug/L ND 0.50 06/29/23 14:47 1,2-Dichlorobenzene ug/L ND 0.50 06/29/23 14:47 1,2-Dichloroethane ug/L ND 0.50 06/29/23 14:47 1,2-Dichloropropane ug/L ND 0.50 06/29/23 14:47 1,3,5-Trimethylbenzene ug/L ND 0.50 06/29/23 14:47 1,3-Dichlorobenzene ug/L ND 0.50 06/29/23 14:47 1,3-Dichloropropane ug/L ND 0.50 06/29/23 14:47 1,4-Dichlorobenzene ug/L ND 0.50 06/29/23 14:47 2,2-Dichloropropane ug/L ND 0.50 06/29/23 14:47 2-Chlorotoluene ug/L ND 0.50 06/29/23 14:47 4-Chlorotoluene ug/L ND 0.50 06/29/23 14:47 Benzene ug/L ND 0.50 06/29/23 14:47 Bromobenzene ug/L ND 0.50 06/29/23 14:47 Bromochloromethane ug/L ND 0.50 06/29/23 14:47 Bromodichloromethane ug/L ND 0.50 06/29/23 14:47 Bromoform ug/L ND 0.50 06/29/23 14:47 Bromomethane ug/L ND 5.0 06/29/23 14:47 Carbon tetrachloride ug/L ND 0.50 06/29/23 14:47 Chlorobenzene ug/L ND 0.50 06/29/23 14:47 Chloroethane ug/L ND 1.0 06/29/23 14:47 Chloroform ug/L ND 0.50 06/29/23 14:47 Chloromethane ug/L ND 1.0 06/29/23 14:47 cis-1,2-Dichloroethene ug/L ND 0.50 06/29/23 14:47 cis-1,3-Dichloropropene ug/L ND 0.50 06/29/23 14:47 Dibromochloromethane ug/L ND 0.50 06/29/23 14:47 Dibromomethane ug/L ND 0.50 06/29/23 14:47 Dichlorodifluoromethane ug/L ND 0.50 06/29/23 14:47 Diisopropyl ether ug/L ND 0.50 06/29/23 14:47 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 10 of 19 Page 13 of 24 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units Blank Result Reporting Limit Qualifiers METHOD BLANK: 4065448 Associated Lab Samples:92674982001, 92674982002, 92674982003, 92674982004 Matrix: Water Analyzed Ethylbenzene ug/L ND 0.50 06/29/23 14:47 Hexachloro-1,3-butadiene ug/L ND 2.0 06/29/23 14:47 Isopropylbenzene (Cumene) ug/L ND 0.50 06/29/23 14:47 m&p-Xylene ug/L ND 1.0 06/29/23 14:47 Methyl-tert-butyl ether ug/L ND 0.50 06/29/23 14:47 Methylene Chloride ug/L ND 2.0 06/29/23 14:47 n-Butylbenzene ug/L ND 0.50 06/29/23 14:47 n-Propylbenzene ug/L ND 0.50 06/29/23 14:47 Naphthalene ug/L ND 2.0 06/29/23 14:47 o-Xylene ug/L ND 0.50 06/29/23 14:47 sec-Butylbenzene ug/L ND 0.50 06/29/23 14:47 Styrene ug/L ND 0.50 06/29/23 14:47 tert-Butylbenzene ug/L ND 0.50 06/29/23 14:47 Tetrachloroethene ug/L ND 0.50 06/29/23 14:47 Toluene ug/L ND 0.50 06/29/23 14:47 trans-1,2-Dichloroethene ug/L ND 0.50 06/29/23 14:47 trans-1,3-Dichloropropene ug/L ND 0.50 06/29/23 14:47 Trichloroethene ug/L ND 0.50 06/29/23 14:47 Trichlorofluoromethane ug/L ND 1.0 06/29/23 14:47 Vinyl chloride ug/L ND 1.0 06/29/23 14:47 1,2-Dichloroethane-d4 (S) % 92 70-130 06/29/23 14:47 4-Bromofluorobenzene (S) % 99 70-130 06/29/23 14:47 Toluene-d8 (S) % 98 70-130 06/29/23 14:47 Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4065449LABORATORY CONTROL SAMPLE: LCSSpike 1,1,1,2-Tetrachloroethane ug/L 18.920 94 60-140 1,1,1-Trichloroethane ug/L 18.620 93 60-140 1,1,2,2-Tetrachloroethane ug/L 18.620 93 60-140 1,1,2-Trichloroethane ug/L 20.120 100 60-140 1,1-Dichloroethane ug/L 19.220 96 60-140 1,1-Dichloroethene ug/L 20.020 100 60-140 1,1-Dichloropropene ug/L 20.120 101 60-140 1,2,3-Trichlorobenzene ug/L 20.920 104 60-140 1,2,3-Trichloropropane ug/L 18.120 90 60-140 1,2,4-Trichlorobenzene ug/L 20.420 102 60-140 1,2,4-Trimethylbenzene ug/L 18.420 92 60-140 1,2-Dibromo-3-chloropropane ug/L 17.120 85 60-140 1,2-Dibromoethane (EDB) ug/L 18.620 93 60-140 1,2-Dichlorobenzene ug/L 19.720 98 60-140 1,2-Dichloroethane ug/L 18.920 94 60-140 1,2-Dichloropropane ug/L 20.120 101 60-140 1,3,5-Trimethylbenzene ug/L 19.020 95 60-140 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 11 of 19 Page 14 of 24 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units LCS Result % Rec Limits Qualifiers% RecConc. 4065449LABORATORY CONTROL SAMPLE: LCSSpike 1,3-Dichlorobenzene ug/L 19.420 97 60-140 1,3-Dichloropropane ug/L 18.820 94 60-140 1,4-Dichlorobenzene ug/L 19.520 97 60-140 2,2-Dichloropropane ug/L 17.920 90 60-140 2-Chlorotoluene ug/L 19.020 95 60-140 4-Chlorotoluene ug/L 18.320 92 60-140 Benzene ug/L 19.020 95 60-140 Bromobenzene ug/L 18.920 95 60-140 Bromochloromethane ug/L 18.220 91 60-140 Bromodichloromethane ug/L 18.120 90 60-140 Bromoform ug/L 18.720 93 60-140 Bromomethane ug/L 14.520 72 60-140 Carbon tetrachloride ug/L 19.520 97 60-140 Chlorobenzene ug/L 19.120 96 60-140 Chloroethane ug/L 19.020 95 60-140 Chloroform ug/L 18.220 91 60-140 Chloromethane ug/L 20.820 104 60-140 cis-1,2-Dichloroethene ug/L 18.920 94 60-140 cis-1,3-Dichloropropene ug/L 19.020 95 60-140 Dibromochloromethane ug/L 18.220 91 60-140 Dibromomethane ug/L 19.820 99 60-140 Dichlorodifluoromethane ug/L 23.420 117 60-140 Diisopropyl ether ug/L 18.920 95 60-140 Ethylbenzene ug/L 18.420 92 60-140 Hexachloro-1,3-butadiene ug/L 20.620 103 60-140 Isopropylbenzene (Cumene) ug/L 19.720 99 60-140 m&p-Xylene ug/L 37.640 94 60-140 Methyl-tert-butyl ether ug/L 18.520 92 60-140 Methylene Chloride ug/L 19.320 97 60-140 n-Butylbenzene ug/L 18.720 93 60-140 n-Propylbenzene ug/L 18.120 90 60-140 Naphthalene ug/L 19.120 96 60-140 o-Xylene ug/L 18.720 93 60-140 sec-Butylbenzene ug/L 18.620 93 60-140 Styrene ug/L 18.920 95 60-140 tert-Butylbenzene ug/L 15.120 76 60-140 Tetrachloroethene ug/L 19.120 95 60-140 Toluene ug/L 17.820 89 60-140 trans-1,2-Dichloroethene ug/L 19.620 98 60-140 trans-1,3-Dichloropropene ug/L 18.720 93 60-140 Trichloroethene ug/L 20.220 101 60-140 Trichlorofluoromethane ug/L 18.420 92 60-140 Vinyl chloride ug/L 17.320 87 60-140 1,2-Dichloroethane-d4 (S) %96 70-130 4-Bromofluorobenzene (S) %100 70-130 Toluene-d8 (S) %99 70-130 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 12 of 19 Page 15 of 24 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4065450MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92674674001 4065451 MSD Result MSD % Rec RPD MSDMS Spike Conc. 1,1,1,2-Tetrachloroethane ug/L 20 109 60-140108 120ND21.9 21.6 1,1,1-Trichloroethane ug/L 20 110 60-140111 120ND22.1 22.3 1,1,2,2-Tetrachloroethane ug/L 20 105 60-140103 220ND21.0 20.6 1,1,2-Trichloroethane ug/L 20 114 60-140106 720ND22.7 21.3 1,1-Dichloroethane ug/L 20 113 60-140112 120ND22.7 22.4 1,1-Dichloroethene ug/L 20 123 60-140123 020ND24.6 24.6 1,1-Dichloropropene ug/L 20 121 60-140119 220ND24.2 23.8 1,2,3-Trichlorobenzene ug/L 20 104 60-140108 420ND20.8 21.6 1,2,3-Trichloropropane ug/L 20 103 60-140100 320ND20.7 20.1 1,2,4-Trichlorobenzene ug/L 20 102 60-140108 620ND20.3 21.5 1,2,4-Trimethylbenzene ug/L 20 105 60-140104 1202.3 23.3 23.2 1,2-Dibromo-3-chloropropane ug/L 20 97 60-14095 320ND19.5 19.0 1,2-Dibromoethane (EDB) ug/L 20 107 60-140103 420ND21.4 20.6 1,2-Dichlorobenzene ug/L 20 107 60-140106 120ND21.4 21.2 1,2-Dichloroethane ug/L 20 107 60-140106 120ND21.9 21.7 1,2-Dichloropropane ug/L 20 119 60-140116 320ND23.9 23.2 1,3,5-Trimethylbenzene ug/L 20 110 60-140110 120ND21.9 22.1 1,3-Dichlorobenzene ug/L 20 107 60-140105 120ND21.3 21.0 1,3-Dichloropropane ug/L 20 107 60-140104 320ND21.5 20.8 1,4-Dichlorobenzene ug/L 20 106 60-140104 220ND21.2 20.7 2,2-Dichloropropane ug/L 20 102 60-140101 020ND20.3 20.3 2-Chlorotoluene ug/L 20 106 60-140104 220ND21.2 20.8 4-Chlorotoluene ug/L 20 104 60-140101 220ND20.7 20.3 Benzene ug/L 20 135 60-140123 62015.2 42.2 39.9 Bromobenzene ug/L 20 105 60-140103 220ND20.9 20.5 Bromochloromethane ug/L 20 104 60-140103 020ND20.8 20.7 Bromodichloromethane ug/L 20 104 60-140102 320ND20.9 20.3 Bromoform ug/L 20 106 60-140102 320ND21.1 20.5 Bromomethane ug/L 20 74 60-14076 320ND14.7 15.1 Carbon tetrachloride ug/L 20 116 60-140116 120ND23.2 23.1 Chlorobenzene ug/L 20 110 60-140108 120ND21.9 21.7 Chloroethane ug/L 20 110 60-140108 120ND21.9 21.7 Chloroform ug/L 20 106 60-140105 120ND21.1 21.0 Chloromethane ug/L 20 133 60-140130 220ND26.5 26.1 cis-1,2-Dichloroethene ug/L 20 110 60-140111 020ND22.1 22.2 cis-1,3-Dichloropropene ug/L 20 108 60-140105 320ND21.6 21.0 Dibromochloromethane ug/L 20 103 60-14098 520ND20.7 19.6 Dibromomethane ug/L 20 111 60-140112 120ND22.3 22.4 Dichlorodifluoromethane ug/L M120149 60-140147 120ND29.8 29.4 Diisopropyl ether ug/L 20 110 60-140108 2200.72 22.8 22.3 Ethylbenzene ug/L 20 107 60-140106 1201.6 23.0 22.8 Hexachloro-1,3-butadiene ug/L 20 97 60-140101 420ND19.4 20.2 Isopropylbenzene (Cumene) ug/L 20 113 60-140114 0207.7 30.4 30.5 m&p-Xylene ug/L 40 108 60-140107 1406.3 49.3 49.0 Methyl-tert-butyl ether ug/L 20 106 60-140104 2207.4 28.7 28.2 Methylene Chloride ug/L 20 107 60-140105 220ND21.5 21.0 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 13 of 19 Page 16 of 24 #=QC# QUALITY CONTROL DATA Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result. Parameter Units MS Result % Rec Limits Qual% RecConc. 4065450MATRIX SPIKE & MATRIX SPIKE DUPLICATE: MSSpike Result 92674674001 4065451 MSD Result MSD % Rec RPD MSDMS Spike Conc. n-Butylbenzene ug/L 20 105 60-140108 320ND20.9 21.7 n-Propylbenzene ug/L 20 107 60-140106 1208.3 29.8 29.6 Naphthalene ug/L 20 114 60-140115 02012.9 35.6 35.8 o-Xylene ug/L 20 104 60-140106 2200.73 21.5 21.8 sec-Butylbenzene ug/L 20 101 60-140104 3201.6 21.8 22.5 Styrene ug/L 20 107 60-140106 120ND21.4 21.3 tert-Butylbenzene ug/L 20 85 60-14086 120ND17.1 17.2 Tetrachloroethene ug/L 20 112 60-140112 020ND22.5 22.4 Toluene ug/L 20 104 60-140104 0201.1 21.9 21.9 trans-1,2-Dichloroethene ug/L 20 118 60-140117 120ND23.5 23.3 trans-1,3-Dichloropropene ug/L 20 106 60-140102 320ND21.1 20.5 Trichloroethene ug/L 20 121 60-140118 220ND24.2 23.7 Trichlorofluoromethane ug/L 20 114 60-140113 120ND22.8 22.5 Vinyl chloride ug/L 20 108 60-140107 120ND21.6 21.4 1,2-Dichloroethane-d4 (S) %92 70-13095 4-Bromofluorobenzene (S) %98 70-13099 Toluene-d8 (S) %98 70-13098 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 14 of 19 Page 17 of 24 #=QL# QUALIFIERS Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) DEFINITIONS DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot. ND - Not Detected at or above adjusted reporting limit. TNTC - Too Numerous To Count J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. MDL - Adjusted Method Detection Limit. PQL - Practical Quantitation Limit. RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision andbias for a specific analyte in a specific matrix. S - Surrogate 1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte isa combined concentration. Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. LCS(D) - Laboratory Control Sample (Duplicate) MS(D) - Matrix Spike (Duplicate) DUP - Sample Duplicate RPD - Relative Percent Difference NC - Not Calculable. SG - Silica Gel - Clean-Up U - Indicates the compound was analyzed for, but not detected. Acid preservation may not be appropriate for 2 Chloroethylvinyl ether. A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPAMethod 8260.N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported foreach analyte is a combined concentration.Reported results are not rounded until the final step prior to reporting. Therefore, calculated parameters that are typically reported as"Total" may vary slightly from the sum of the reported component parameters. Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. TNI - The NELAC Institute. ANALYTE QUALIFIERS Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1 REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 15 of 19 Page 18 of 24 #=CR# QUALITY CONTROL DATA CROSS REFERENCE TABLE Pace Project No.: Project: 92674982 23-172-0007 (3838EXP) Lab ID Sample ID QC Batch Method QC Batch Analytical Method Analytical Batch 92674982001 783884MW-15 SM 6200B 92674982002 783884EM-3 SM 6200B 92674982003 783884WSW-1 SM 6200B 92674982004 783884TRIP BLANK SM 6200B REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written consent of Pace Analytical Services, LLC.Date: 07/07/2023 02:46 PM Pace Analytical Services, LLC 9800 Kincey Ave. Suite 100 Huntersville, NC 28078 (704)875-9092 Page 16 of 19 Page 19 of 24 Page 17 of 19 Page 20 of 24 Page 18 of 19 Page 21 of 24 Page 19 of 19 Page 22 of 24 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:23-172-0007 Withers & Ravenel 01221 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:IRT15 1.2C Chain of Custody (COC) present?Yes No Yes No Not Present Yes No Not Present Yes No COC agrees with sample label(s)? Yes No COC properly completed Samples in proper containers? Sample containers intact? Sufficient sample volume for indicated test(s)? All samples received within holding time? Cooler temperature in compliance? Yes No Yes No Yes No Yes No Yes No Yes NoCooler/Samples arrived at the laboratory on ice. Samples were considered acceptable as cooling process had begun. Yes No Yes No N/A Yes No N/A Yes No N/ASoil VOA method 5035 – compliance criteria met Water - Sample containers properly preserved Water - VOA vials free of headspace Yes No N/A Trip Blanks received with VOAs Low concentration EnCore samplers (48 hr) High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d) High concentration container (48 hr) Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Number of coolers/boxes received Yes No 1 Signature:Angelo Norvell Date & Time:06/21/2023 11:10:23 Special precautions or instructions included? Comments: Page 23 of 24 Page 24 of 24 WithersRavenel Our People. Your Success. APPENDIX C GENERAL STANDARD OPERATING PROCEDURES Generalized Standard Operating Procedures (Not All Inclusive) WithersRavenel Our People. Your Success. Soil Sampling, Soil Boring and Monitor Well Installation, Well Development Soil borings are installed utilizing a stainless-steel hand auger, direct-push hydraulic drill or auger rotary drill using either a macro core™ sampler, hollow stem augers, or air rotary roller cone bit. Soil borings are typically sampled at discrete intervals from the bucket of a clean stainless steel hand auger, direct push stainless steel sampler with acetate sleeve, or a split barrel sampler. When appropriate, soil samples may be collected from drill cuttings associated with the boring or well installation. Monitor wells are constructed within select soil borings of one, two, or four-inch inside diameter PVC casing and machine slotted screen in accordance with NCAC Title 15A, Subchapter 02C (Well Construction Standards, Criteria and Standards Applicable to Water Supply and Certain Other Wells). Clean-washed “#2 Torpedo Sand” is typically utilized to fill the boring annulus surrounding the well screen, extending to a minimum of 1-foot above the well screen. A minimum 1-foot thick bentonite clay seal is emplaced above the sand pack and hydrated. Neat cement grout is placed in the remaining annulus space from the upper portion of the bentonite seal to within 1-foot of surface grade. In coastal plain areas where shallow groundwater is encountered, a variance to construction standards may be employed to ensure the upper portion of the well screen intersects the upper aquifer surface. Wellheads may be completed with either concrete-set flush mounted traffic-bearing steel skirted manholes with bolt down covers or steel above-ground “stick-up” well protectors set in a concrete pad. The monitoring wells are secured with locking caps. Temporary wells or piezometers may be completed with the PVC riser cut at or above grade, and are abandoned within 24-hours of their installation. Wells may be developed using a bailer, electric submersible pump, pneumatic pump, or peristaltic pump, dependent upon site conditions. When wells are developed by the driller, they may be developed with any of the methods outlined above, in addition to air or water injection. Soil boring logs and well construction details are typically prepared for presentation in a report appendix. Borings completed in bedrock may be drilled using air rotary, coring, or sonic drilling methods. Groundwater Depth to Water Measurements Groundwater level measurements are typically obtained using an electronic water level indicator which registers a tone and/or illuminated light when the probe contacts groundwater. Depth to groundwater measurements are obtained by lowering the probe attached to a cable usually marked in 0.01 foot intervals into the well until the probe of the meter intersects the water surface. The measurement from the top of the riser pipe or top of casing (TOC) to the water level is recorded to the nearest 0.01 foot. The electronic water level indicator probe and exposed probe cable is decontaminated between measurement locations. Generalized Standard Operating Procedures (Not All Inclusive) WithersRavenel Our People. Your Success. Free Product Level Measurements Light Non-Aqueous Phase Liquid (LNAPL) or “free product” present on the water table is measured using an electronic oil/water interface probe. The interface probe has both an audible and illuminating light that indicate when a liquid level is encountered. The oil/water interface probe registers a solid tone and solidly lit light when LNAPL petroleum product is encountered and a beeping tone flashing light when groundwater is encountered. Depth to LNAPL measurements are obtained by lowering the probe attached to a cable marked in 0.01 foot intervals into the well until the probe of the meter intersects the product or groundwater. The measurements from the top of the riser pipe or TOC to the liquid level are recorded to the nearest 0.01 foot. The thickness of LNAPL is calculated by subtracting the depth to LNAPL measurement from the depth to groundwater measurement. The electronic interface probe is decontaminated between measurement locations. Soil Sampling and Field Screening Soil sampling is performed in general accordance with ASTM: 1586-84 where applicable. Sampling procedures are followed to protect the chemical integrity of the soil samples and minimize the potential for cross contamination between sample locations, including discarding of the exterior of the sample which contacts the auger bucket, acetate sleeve, or split barrel sampler, the use of stainless steel sampling equipment, and the thorough decontamination of sampling apparatus prior to use and between sample locations. Soil samples retained as a part of excavation or other intrusive “digging” activities may be collected from the bucket of excavation equipment or using a hand shovel, if appropriate. Care to collect soil samples from excavation equipment includes retrieving native soil from material that has not made contact with the excavating equipment. Samples are collected in sealable bags or by directly filling sample containers as described above. Sampling is performed using new, disposable nitrile gloves for each sample location to ensure sample integrity and minimize the potential for cross contamination or field personnel exposure to contaminants. Sampling equipment such as hand auger extensions and buckets, direct push samplers, split spoons or shovels, are decontaminated prior to their use in the collection of samples. Samples are placed within laboratory grade sample containers provided by the laboratory to which the samples are submitted, labeled, sealed, and placed in an ice filled cooler. An aliquot of the sample is typically placed in a clean sealable bag and allowed to reach ambient air temperature for future screening of volatile vapor content with a photoionization detector (PID), flame-ionization detector (FID) or other portable screening device. Screening of samples with a PID, FID or other field screening device is performed in accordance with device manufacturer specifications for screening, following calibration of the instrument based on manufacturer recommended procedures. Generalized Standard Operating Procedures (Not All Inclusive) WithersRavenel Our People. Your Success. Groundwater Sampling Groundwater samples are generally collected using one of three standard methods – through the use of a dedicated, disposable bailer, a peristaltic pump or submersible electric pump. When sampling with a bailer, a minimum of three well volumes of groundwater are extracted from the well as a means of purging, unless the well is purged to a “dry” state prior to the removal of three volumes of water. Prior to collection of the groundwater sample with the bailer, the water level is allowed to recover to within 80% of the original level measured prior to purging. When sampling with a peristaltic or submersible electric pump, polyethylene (PE) tubing (or equivalent) is emplaced into the screened section of the monitoring well, and the pump is used to extract water through the tubing. When using the either of these methods, general water quality measurements including but not limited to pH, temperature, dissolved oxygen (DO), oxygen reductive potential (ORP), specific conductivity and turbidity may be used as methods for determining when an adequate purge of the well has been conducted. When water quality parameters are measured, the resulting data are included in well purge forms or field notes specific to each site and sampling point. Following the purging of three well volumes of groundwater (in the case of the bailed well) or stability of monitored measurements (in the case of the peristaltic or submersible electric pump), the groundwater sample(s) are introduced directly into sample containers provided by the laboratory to which samples are ultimately submitted for analysis. Any samples requiring chemical preservation are contained in pre-preserved container(s) provided by the laboratory. Sampling is performed using new, disposable nitrile gloves for each sample location to ensure sample integrity and minimize the potential for cross contamination of samples or field personnel exposure to contaminants. Water Supply Well Sampling Sampling of water supply wells is accomplished through the collection of a representative sample from an in-line water tap or other point accessible for sampling. Where possible, the sample is collected from a point prior to any filtration or point of entry (POE) system which might be installed on a well. In some cases, samples will be collected from both pre and post-POE locations. Prior to the collection of samples through an in-place sampling point, the tap or sampling port is cleaned with an Alconox® and deionized water solution, rinsed with deionized water, and again with an isopropyl alcohol (IPA) rinse. In the case of active supply wells (e.g., a well with a useable well pump with an active power supply), the well pump is energized and allowed to run for a minimum of ten (10) minutes time, after which a sample is contained in laboratory grade sample containers as described in the previous section. Water quality parameters may be (but are not necessarily) measured in association with the well purging. Supply wells without active power supplies are not generally sampled, as the well seal cannot be compromised by individuals not certified as a well contractor. However, in the case of a well with no power supply or pump installed, samples could be obtained through the use of a bailer, peristaltic pump or electric submersible pump. Generalized Standard Operating Procedures (Not All Inclusive) WithersRavenel Our People. Your Success. Decontamination Procedures Decontamination procedures employed in the performance of field activities will vary dependent upon the method(s) of sampling performed at any site, but will generally include the following: • Remove excess soil/sludge from any sampling equipment as needed, • Wash and scrub the equipment with a phosphate-free detergent such as Alconox® or Liquinox® in a contaminant-free tap water solution. Use a brush to remove particulate matter and surface films as necessary, • Rinse thoroughly with tap water, • Rinse thoroughly with analyte-free water (deionized water),  Rinse thoroughly with isopropyl alcohol, • Allow the equipment to air dry, • Prevent inadvertent contamination during storage and transport (accomplished through storage of equipment in foil or plastic bags/sheeting). In the case of disposable bailers and tubing utilized for the purging and sampling of wells, these items may be decontaminated prior to their disposal. In general, no decontamination of these items is necessary prior to their use in sampling.