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HomeMy WebLinkAboutWS-48_30023_CA_MRP_20221114WithersRavenel    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     Eden Superior Car Wash Incident # 30023 UST# WS-48 102 Boone Road Eden, Rockingham County, North Carolina WithersRavenel Project No. 02172214.09        Prepared for: State of North Carolina  Department of Environmental Quality  Division of Waste Management   Underground Storage Tank Section  Trust Fund Branch  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  November 14, 2022   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          November 14, 2022        Attn: Mr. Herb Berger, P.G.    RE: Groundwater Monitoring Report  Eden Superior Car Wash  102 Boone Road  Eden, Rockingham County, North Carolina  Incident # 30023  UST # WS‐48  WithersRavenel Project No. 02172214.09    Mr. Berger:    WithersRavenel (WR) has completed a groundwater monitoring report for the above‐referenced site. These  activities were approved in the October 4, 2022, Task Authorization (TA)‐04, for Incident Number 30023  under North Carolina Department of Environmental Quality (NCDEQ) Contract # N122019B.     The following report summarizes site activities completed on October 17, 2022.    We appreciate the opportunity to be of service to the Trust Fund Branch. Should you have questions,  comments, or require additional information, please contact WR at 919‐469‐3340.      Sincerely,  WithersRavenel          David C. Vail  Elizabeth A. Allyn, P.G.  Environmental Scientist I  Environmental Project Geologist II            North Carolina Department of Environmental Quality  Division of Waste Management   Underground Storage Tanks Section  Trust Fund Branch  1646 Mail Service Center  Raleigh, North Carolina 27699‐1646   WithersRavenel    Our People. Your Success.  Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  i    Table of Contents  A. Site Information ............................................................................................... 1  B. Executive Summary ......................................................................................... 3  C. Site History & Characterization ..................................................................... 5  D. Site Geology and Hydrogeology ................................................................... 9  E. Site Investigation – October 2022 ............................................................. 10  F. Conclusions and Recommendations ......................................................... 12    FIGURES   Figure 1 General Location Map  Figure 2 Site Map  Figure 3 Groundwater Elevation Map (October 2022)  Figure 4 Groundwater Results Map (October 2022)  Figure 5 Benzene Isoconcentration (October 2022)  Figure 6 Vicinity Map  TABLES   Table 1 Site History: UST/AST System & Other Release Information  Table 2 Additional Receptor Information   Table 3 Monitoring Well Construction and Liquid Level Information  Table 4 Summary of Groundwater Analytical Results  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.    Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  1  A. SITE INFORMATION 1. Site Identification  Date of Report:  November 14, 2022  Facility I.D.: Unknown  Incident No.: 30023  UST No.:   Site Risk:  WS‐48  Intermediate  Site Rank: I150D  Land Use Category: Commercial  Site Name: Eden Superior Car Wash  Site Location: 102 Boone Road  Nearest City/Town: Eden  County: Rockingham  Description of Geographical Data Point:  Former UST Basin  Location Method:  Google Earth  Latitude: 36.504220° N  Longitude: ‐79.758490° W  2. Contact Information  Responsible Party: Unknown  Address: Not Available  Phone: Not Available     Property Owner: Rush Properties, LLC  Address: 675 Westerly Park Road, Eden NC 27288  Phone: 828‐648‐0782 (Disconnected)      Property Occupant: Vacant  Phone: Vacant     Consultant/Contractor: WithersRavenel  Address:  115 MacKenan Drive, Cary, NC 27511  Phone:  919‐469‐3340     Analytical Laboratory: Waypoint Analytical, Inc. (Waypoint)   State Certification Number: ENV402  Address: 449 Springbrook Rd., Charlotte, NC 28217  Phone: 704‐529‐6364       WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  3    B. EXECUTIVE SUMMARY 1. Summary of Activities Associated with Current TA  WithersRavenel, Inc. (WR), in association with Task Authorization‐04 (TA‐04) under North Carolina  Department of Environmental Quality (NCDEQ) Contract # N122019B, performed monitoring activities  including gauging, purging, and sampling site monitoring wells MW‐6, MW‐7, MW‐8, MW‐9, MW‐10, MW‐ 11, MW‐13, and MW‐14 as well as preparing a field blank at the Eden Superior Carwash site located at 102  Boone Road, Eden, Rockingham County, North Carolina.      2. Soil, Groundwater, and Liquid Non‐Aqueous Phase Liquid (LNAPL) Assessment Information  Soil  No soil samples were collected in association with the current TA.   During limited site assessment activities associated with highway improvements to NC Highway 770 and  Bridge Number 75 crossing the Smith River, Solutions Industrial & Environmental Services, Inc., advanced  seven soil borings and collected soil samples at the Eden Superior Car Wash site. Analytical results of soil  samples collected showed total petroleum hydrocarbons (TPH) concentrations exceeding the NCDEQ  Action Level at the time in six of the seven soil samples collected. The highest TPH‐Gasoline Range Organic  (GRO) concentration was 4,700 milligrams per kilogram (mg/kg) and TPH‐Diesel Range Organics (DRO) was  2,200 mg/kg in the sample collected from soil boring B2 near the suspected underground storage tanks  (USTs).  Terraquest collected UST closure soil samples in March 2010. Analysis of the UST closure samples detected  concentrations of petroleum‐typical contaminants above the then Action Limit of 10 mg/kg for GRO.  Additionally, Terraquest personnel collected one soil sample from the base of the excavation (BE). The  analysis of the soil sample detected several targeted constituents exceeding the corresponding Soil‐to‐ Groundwater Maximum Soil Contaminant Concentrations (MSCCs), but below the corresponding  Residential MSCCs.  In December 2017, ECS Southeast, LLP (ECS) collected one soil sample from each of the four soil borings  advanced in the vicinity of the former UST location. Laboratory analysis of the soil samples detected several  petroleum compounds above the Soil‐to‐Groundwater MSCCs, but below the Residential MSCCs in all four  soil samples (SS‐1 through SS‐4). In soil sample SS‐4, C5‐C8 Aliphatics, C9‐C12 Aliphatics, and C9‐C10  Aromatics were detected above the Residential MSCCs, but below the Industrial/Commercial MSCCs.  In July 2021, WR collected one composite soil sample from the cuttings that were generated during the  installation of two Type II monitoring wells (MW‐13 and MW‐14). The analytical results from the soil sample  collected indicated a TPH DRO value of 33.6 mg/kg, below the current NCDEQ Action Level of 100 mg/kg  for TPH DRO and a TPH GRO value of 54.7 mg/kg, above the current NCDEQ Action Level of 50 mg/kg for  TPH GRO.  Groundwater  WR collected samples from site monitoring wells MW‐7 through MW‐11, MW‐13, and MW‐14 on October  17, 2022. WR also prepared a field blank for quality assurance analysis.  The groundwater samples from the  sampled monitoring wells were submitted for analysis of Volatile Organic Compounds (VOCs) by Standard  Method (SM) 6200B.    Laboratory analytical results revealed the following:   The concentration of total xylenes reported in monitoring well MW‐11 exceeded the Gross  Contamination Levels (GCLs).  WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  4     Monitoring wells MW‐7 through MW‐11 and MW‐13 exhibited concentrations exceeding the  North Carolina Groundwater Quality Standards (2L Standards) for one or more targeted compounds.   Monitoring well MW‐14 did not exhibit concentrations exceeding the 2L Standards.   The Field Blank did not contain concentrations of targeted compounds above the laboratory  Method Quantitation Limits (MQLs).     Light Non‐Aqueous Phase Liquid (LNAPL)  LNAPL was measured in monitoring well MW‐6 during the October 2022 monitoring event. The last time  LNAPL was measured in MW‐6 was December 2017. LNAPL has also been historically measured in MW‐7  as recently as December 2016.      3.        Receptor Information   A receptor survey was not performed by WR during the October 2022 event.  Terraquest personnel performed a receptor survey in March 2010 in association with UST removal activities.  No water supply wells were discovered within 1,500 feet of the site. Terraquest identified one surface water  body within 500 feet of the site. Smith River is located along the eastern boundary of the site. According to  the NC Surface Water Classifications website, the Smith River is classified as Class C waters adjoining the  site. The portion of the Smith River located just upstream of the site is classified as a Class WS‐IV Critical  waters.  Terraquest determined that the site and adjoining properties are zoned for industrial use and that  the use of the surrounding vicinity was chiefly industrial and commercial.        4.        Remediation Activities   No remediation activities were performed at the site during the October 2022 event.  After the onsite USTs were removed in March 2010, Terraquest personnel supervised the excavation of  approximately 18 tons of contaminated soil. The vertical depth of the excavation was approximately 9 feet  below the ground surface (BGS). The soil was transported offsite and disposed of by Zebra Environmental.        5. Recommendations  Based on the results of assessment activities conducted at the site in association with the current TA, WR  recommends the following:    WR recommends performing one additional sampling events and completing plume stability analysis  and trends after the second sampling event as a minimum of four sampling events are required to  establish concentration trends using the GSI Environmental Inc. (GSI) Mann‐Kendall Toolkit. If trends  are determined to be stable or decreasing, WR recommends fate & transport modeling.   If additional information regarding potential impacts from the upgradient Spray Exxon release to the  Former Eden Superior Car Wash site is desired, WR recommends installation of a temporary well in the  NCDOT right‐of‐way across Boone Road or forensic analysis of the upgradient and downgradient  monitoring wells.     WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  5    C. SITE HISTORY & CHARACTERIZATION The Eden Superior Car Wash property is located at 102 Boone Road in Eden, Rockingham County, North  Carolina (Figure 1).  The subject property currently consists of a commercial building being used for unknown  purposes. Figure 2 is provided as a site map showing the current conditions of the subject property. The  subject parcel encompasses an approximate total of 0.23 acres.  1. UST Information    A geophysical survey conducted at the site revealed two anomalies suspected to be USTs were found in  front of the onsite building using an EM‐61 ferrous metal locator. Following the geophysical survey, a 1,000‐ gallon gasoline UST was removed in March 2010 after evacuating vapors and residual fluids. A second 550‐ gallon gasoline UST was discovered at this time and removed after evacuating vapors and residual fluids.  The USTs appeared to be in good condition with moderate rust and pitting. Terraquest observed no visible  holes along the surface of the USTs during removal activities. The USTs were then taken offsite and disposed  of by Zebra Environmental. UST information is summarized in Table 1.    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:   An adjacent UST incident is located across (west‐southwest of) Boone Road from the Eden Superior Car  Wash site. This incident is known as the former Spray Exxon located at 103 Boone Road in Eden,  Rockingham County, North Carolina (Incident No.13568). Assessment and cleanup activities are being  performed by the responsible party and their consultant. The site consists of an active automotive  maintenance shop, which stores gasoline and diesel fuel for retail sale in four USTs. A 4,000‐gallon diesel  UST was removed by G & H Oil Equipment, Inc. of Greensboro, North Carolina in July 1990. The diesel  UST was replaced with the existing 3,000‐gallon diesel UST. Legacy Environmental Services, Inc.  (Legacy) submitted a UST Closure Report in December 1998 describing the closure activities that  occurred in 1990 as well as additional activities which occurred in 1998. Apex Environmental, Inc.  previously completed a Corrective Action Plan for NCDEQ Incident No. 13568, dated October 15, 2003.  Although the incident documented at the adjacent site is related to the removal of a diesel fuel UST,  historical groundwater contamination beneath the site reflects a release of gasoline. Therefore, Progress  Environmental, Inc. (Progress) collected groundwater samples for analysis for gasoline related  compounds. Progress noted the presence of an adjacent documented petroleum release (the Eden  Superior Car Wash).     August 28, 2001: During limited site assessment activities associated with highway improvements to  NC Highway 770 and Bridge Number 75 crossing the Smith River, Solutions Industrial & Environmental  Services, Inc., advanced seven soil borings and collected soil samples at the Rush Properties, LLC  property located at 102 Boone Road (i.e., Eden Superior Car Wash site). Prior to the advancement of  soil borings, a geophysical survey was conducted of the area. Two anomalies suspected to be  underground storage tanks (USTs) were found in front of the onsite building using an EM‐61 ferrous  metal locator. Analytical results of soil samples collected showed TPH concentrations exceeding 10  mg/kg in six of the seven soil samples collected.  The highest TPH‐GRO concentration was 4,700 mg/kg  and TPH‐DRO was 2,200 mg/kg in the sample collected from soil boring B2 near the suspected USTs.     April 30, 2010: Terraquest personnel submitted a UST‐3 Notice of Intent form to the NCDEQ‐UST  Section. Prior to removing the UST on March 16, 2010, the remaining product (approximately 252  gallons) in the UST was removed. During the removal of the 1,000‐gallon gasoline UST, a second UST  (550‐gallon gasoline) was discovered. Upon discovery of the second UST, the remaining residual liquid  (approximately 550 gallons) was removed. Terraquest personnel inspected the USTs after removal. The  WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  6    USTs appeared to be in good condition with moderate rust and pitting. Terraquest observed no visible  holes along the surface of the USTs during removal activities. The USTs were then taken offsite and  disposed of by Zebra Environmental. After the USTs were removed, soil samples were collected at  locations prescribed by the NCDEQ UST Section for UST closure. The UST closure samples were  submitted for TPH GRO analysis. Analysis of the UST closure samples detected concentrations of  petroleum‐typical contaminants above the then Action Limit of 10 mg/kg for GRO. Approximately 18  tons of contaminated soil were excavated from the site. The vertical depth of the excavation was  approximately 9 feet BGS. The soil was transported offsite and disposed of by Zebra Environmental.  Terraquest personnel collected one soil sample from the base of the excavation (BE). The sample was  submitted for risk‐based laboratory analysis per EPA Method 8260 and MADEP VPH. The analysis of  the soil sample detected several targeted constituents exceeding the corresponding Soil‐to‐ Groundwater MSCCs, but below the corresponding Residential MSCCs. Based on the analytical results  from the soil sample collected from the base of the excavation, Terraquest recommended that a Limited  Site Assessment (LSA) be conducted to determine if groundwater has been impacted and to formally  establish a risk rank for the site. The Terraquest report makes no mention of product lines or dispensers  being found or removed, nor any samples being associated with these features. Terraquest personnel  performed a receptor survey in March 2010 in association with UST removal activities. No water supply  wells were discovered within 1,500 feet of the site. Terraquest identified one surface water body within  500 feet of the site, the Smith River, located along the eastern boundary of the site. Terraquest  determined that the site and adjoining properties are zoned for industrial use and that the use of the  surrounding vicinity was chiefly industrial and commercial.     December 17, 2014: Progress sampled monitoring wells MW‐1, MW‐2, MW‐3, MW‐4, MW‐5, MW‐7,  and MW‐1D. Monitoring wells MW‐1, MW‐2, MW‐3, MW‐4, and MW‐1D were installed to assess the  Spray Exxon site. Note that monitoring well MW‐6 contained approximately 0.03 feet of LNAPL and,  therefore, was not sampled. Monitoring wells MW‐5, MW‐6, and MW‐7 are located offsite across  Boone Road to the east of the Spray Exxon site. Monitoring well MW‐7 is located on the Eden Superior  Car Wash property, and MW‐6 is located further southeast on a different property (the Circle Mart  property). Monitoring well MW‐7 is located southwest of the UST system formerly located on the Eden  Superior Car Wash site. The consultant handling the Spray Exxon incident has concluded that the LNAPL  hydrocarbons observed in monitoring well MW‐6 may have originated from the Eden Superior Car Wash  site.     December 15, 2016: ECS Southeast, LLP (ECS) gauged monitoring wells MW‐6 and MW‐7 for LNAPL.  using an interface probe to measure the depth to water and LNAPL, if present. The probe measured  0.15 feet of LNAPL in monitoring well MW‐6 and 0.01 feet in monitoring well MW‐7. ECS concluded  that an investigation was needed to determine the extent of LNAPL associated with the release  originating from the UST system located on the Eden Superior Car Wash property.     December 18, 2017: ECS advanced four soil borings (SS‐1 through SS‐4) at the site in the vicinity of the  former UST location and two Type II monitoring wells (MW‐8 and MW‐9) were installed on the site to  a depth of 25 feet BGS, each. On December 19, 2017, ECS personnel collected samples from monitoring  wells MW‐7, MW‐8, and MW‐9. MW‐6 was not sampled due to measurable LNAPL in the monitoring  well. Laboratory analysis of the soil samples detected several petroleum compounds above the Soil‐to‐ Groundwater MSCCs, but below the Residential MSCCs in all four soil samples (SS‐1 through SS‐4). In  soil sample SS‐4, C5‐C8 Aliphatics, C9‐C12 Aliphatics, and C9‐C10 Aromatics were detected above the  Residential MSCCs, but below the Industrial/Commercial MSCCs.     February 5, 2018: ECS observed the installation of two additional Type II monitoring wells (MW‐10 and  MW‐11) on the southern adjoining property (the Circle Mart site). Following installation, monitoring  wells MW‐6 through MW‐11 were horizontally and vertically surveyed using a common datum.  Groundwater flow direction was determined to be to the south under a gradient of 1.84 ft/ft as  calculated between monitoring wells MW‐9 and MW‐11. On February 6, 2018, ECS personnel collected  WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  7    groundwater samples from monitoring wells MW‐10 and MW‐11. Laboratory analysis detected  concentrations of numerous targeted compounds that exceeded the corresponding NC 2L Standards in  monitoring wells MW‐7 through MW‐11. Laboratory analysis of the sample obtained from monitoring  well MW‐11 detected a concentration of benzene above the corresponding GCL. Several other  petroleum related hydrocarbons were detected in the samples above the laboratory reporting limits, but  below the corresponding NC 2L Standards.     February 26, 2019: ECS personnel mobilized to the site to collect groundwater samples from monitoring  wells MW‐6 through MW‐11. Approximately 0.01 feet of LNAPL was detected in monitoring well MW‐ 6; therefore, a sample was not collected. Laboratory analysis detected concentrations of numerous  targeted compounds that exceeded the corresponding NC 2L Standards in monitoring wells MW‐7  through MW‐11; however, the concentrations were reported below the corresponding GCLs. Several  other petroleum related hydrocarbons were detected above the laboratory reporting limits, but below  the corresponding NC 2L Standards.     August 4, 2020: ECS personnel observed KCI Technologies, Inc. (KCI) perform a geophysical survey of  the site utilizing ground penetrating radar (GPR). The survey area encompassed the space west of the  Circle Mart building between MW‐6 and MW‐11. This area was chosen due to MW‐6 historically  containing measurable LNAPL and MW‐11 demonstrating the highest concentrations of targeted VOCs  in the sampled site wells. KCI did not identify any anomalies in the surveyed area. ECS recommended  that an LNAPL adsorbent sock be installed in MW‐6 during the next groundwater monitoring event.     March 4, 2021: WR mobilized to the site to gauge and sample the six site monitoring wells MW‐6  through MW‐11. Site groundwater flow direction was determined to be to the east‐southeast towards  Smith River. This flow direction is consistent with historical groundwater flow directions. No LNAPL was  measured or observed in any of the onsite monitoring wells during the March 2021 monitoring event.  Based on these findings, WR recommended installing an additional monitoring well northwest of the  former USTs basin on the edge of the parking lot, east of the onsite building on the edge of the parking  lot, and south of the Circle Mart building as an attempt to determine the extent of the hydrocarbon  plume as well as continued groundwater monitoring of the site monitoring wells.     July 26, 2021: WR performed monitoring activities including gauging, purging, and sampling site  monitoring wells MW‐6, MW‐7, MW‐8, MW‐9, MW‐10, and MW‐11. WR was not able to gain access  to sample the off‐site wells MW‐2 and MW‐3 at Spray Exxon. WR mailed an access agreement prior to  the site visit and tried to obtain written permission during the site visit but was unsuccessful in obtaining  access in both manners.  WR also subcontracted a utility locating group to mark all sub‐surface utilities  prior to the installation of three new Type‐II monitoring wells at the site (MW‐12, MW‐13, MW‐14).  The proposed location for MW‐12 was directly over a municipal sewer line according to Tammy Amos  with the City of Eden Engineering department. The sewer line had been marked outside of the drilling  area beneath the adjacent sidewalk, however, WR and their driller decided to relocate the monitoring  well location to an area believed to be clear of the sewer line and other utilities. The boring was advanced  to a depth of 15‐ft BGS and bedrock was encountered prior to groundwater. WR offset 5‐ft from this  location and advanced another boring which encountered bedrock at approximately 15‐ft BGS and the  well was not installed. Additional attempts to install this well were not made as it was unknown if  additional subsurface utilities existed outside of the area cleared prior to drilling. As a part of this TA, all  soil cuttings from the well installations were placed into 55‐gallon drums and a composite sample was  taken from the cuttings for waste characterization. After the well installations, the tops‐of‐casings for  the newly installed wells were surveyed. The waste collected in the drums was characterized and  properly disposed of at an appropriately licensed facility by EVO Corporation. No targeted VOCs were  reported at concentrations exceeding the established GCLs in any groundwater samples collected from  monitoring wells MW‐6 through MW‐11, MW‐13, and MW‐14 during the July 2021 sampling event.  However, various 2L Standard exceedances were reported as well as ten times the 2B Surface Water  Standards.  WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  8    June 15, 2022: WR performed a groundwater monitoring event at the site which included the gauging,  purging, and sampling of eight site monitoring wells MW‐6 through MW‐11, MW‐13, and MW‐14.  Analytical results for the samples collected from site monitoring wells indicated several targeted VOCs  at concentrations exceeding the established 2L Standards during the June 2022 sampling event.  Analytical results for the samples collected from monitoring wells MW‐10 and MW‐11 reported toluene  at a concentration exceeding ten times the NCDEQ 2B Standards during the June 2022 sampling event.  No targeted VOCs were reported at concentrations exceeding the established GCLs in any groundwater  samples collected from monitoring wells MW‐6 through MW‐11, MW‐13 and MW‐14 during the June  2022 sampling event. When comparing benzene concentrations in groundwater data from December  2017 to benzene concentrations in groundwater data collected in June 2022, all onsite monitoring wells  have reduced in concentrations by a minimum of 42.67%. When comparing benzene concentrations in  groundwater data from December 2017 to benzene concentrations in groundwater data collected in  June 2022, from offsite monitoring well MW‐11, Total VOCs have increased by 85.24%. Due to these  observations in VOC concentrations in groundwater, WR concluded that upgradient Incident # 13568  may be contributing to Total VOC concentrations observed in MW‐11. LNAPL was not discovered in  any site monitoring well during the June 2022 monitoring event.     3. Brief Description of Site Characteristics    The Eden Superior Car Wash property is located at 102 Boone Road in Eden, Rockingham County, North  Carolina (Figure 1).  The subject property currently consists of a commercial building being used for unknown  purposes. Figure 2 is provided as a site map showing the current conditions of the subject property.  According to the Rockingham County GIS, the subject parcel encompasses an approximate total of 0.23  acres and is identified as Parcel Identification Number (PIN) 707015730287. Photographs of site conditions  observed during the October 2022 sampling event are included in Appendix A.      4.  Information on Receptors/Potential Receptors    Terraquest personnel performed a receptor survey in March 2010 in association with UST removal activities.  No water supply wells were discovered within 1,500 feet of the site. Terraquest identified one surface water  body within 500 feet of the site. Smith River is located along the eastern boundary of the site, approximately  100‐feet east of the source of the release. Additionally, WR has identified the Tackett Branch as being a  potential receptor located approximately 280 feet southwest of the source of the release. According to the  NC Surface Water Classifications website, the Smith River is classified as Class C waters adjoining the site.  The portion of the Smith River located just upstream of the site (northeast of the source) is classified as a  Class WS‐IV Critical waters. Tackett Branch is classified as Class C waters.  Terraquest determined that the  site and adjoining properties are zoned for industrial use and that the use of the surrounding vicinity was  chiefly industrial and commercial.  Potential Receptor information is included in Table 2, a Vicinity Map  depicting the locations of the Smith River and Tackett Branch are located on Figure 6.         WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  9    D. SITE GEOLOGY AND HYDROGEOLOGY The Geologic Map of North Carolina (Department of Natural Resources, Division of Land Resources, North  Carolina Geologic Survey, 1985) indicates materials underlying the site consist of Sedimentary Rocks  described as Conglomerate, sandstone, and mudstone, lenticular and laterally‐gradational bedding.  According to the United States Department of Agriculture (USDA) Natural Resources Conservation Service  (NRCS) Web Soil Survey of Rockingham County, soils underlying the site are classified as Urban land and  Dan River loam, which is a frequently flooded soil with slopes of 0% to 2%. The well construction records  and field notes from boring logs provided in the April 2018 ECS Groundwater Monitoring Report indicated  that soils encountered at the site consisted of clayey silts. Borings logs from the installation of MW‐13 and  MW‐14, as well as the attempted installation of MW‐12 indicated that the soils encountered at the site  consisted of sandy clays, sandy silts, clayey silts, and sandy silts. Rock was encountered in MW‐12 at a depth  of 15’ BGS. An attempt was made to offset the well location; however, rock was encountered again in this  location, thus the depth to bedrock is assumed to range between 15‐ft to at least 30‐ft BGS.  Evaluation of the Eden Northwest, NC Topographic Quadrangle (US Geological Survey, 7.5 Minute Series,  2019) indicates that the subject property is at an approximate elevation of 520 feet above mean sea level  (AMSL) at the location of the former UST basin. A scaled portion of the USGS Quadrangle is included as  Figure 1. Topography at the site slopes slightly to the east‐southeast. Depth to groundwater at the site was  measured between 15.85 feet below the Top of Casing (TOC) in monitoring well MW‐11 and 19.35 feet  below TOC in monitoring well MW‐8 in October 2022. WR measured LNAPL in monitoring well MW‐6 at a  thickness of 0.0104‐ft (0.125‐inches) during the October 2022 monitoring event. LNAPL was not observed  or measured in any of the other monitoring wells that were associated with this TA.  Surface water from the site drains to the east‐southeast toward Smith River along the eastern boundary of  the site.  According to the NC Surface Water Classifications website, the Smith River is classified as WS‐IV  Critical waters just upgradient from the source of the release and as Class C waters adjacent to and south  (downstream) of the source of the release.               WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  10    E. SITE INVESTIGATION – OCTOBER 2022 On October 17, 2022, WR personnel mobilized to the subject property to perform groundwater sampling  activities at the facility in association with TA‐04 under NCDEQ Contract # N122019B.  The scope of work  for this project included the gauging, purging, and sampling of monitoring wells MW‐6 through MW‐11,  MW‐13, and MW‐14 as well as preparing a field blank. Due to the presence of LNAPL in monitoring well  MW‐6, WR was unable to sample this well.   Groundwater Sampling Activities  Prior to sampling the monitoring wells located on the site as described below, each well was opened then  gauged with a decontaminated interface probe to determine the depth of water and measure the thickness  of any LNAPL present in each well. LNAPL was measured at 0.125‐in (0.01‐ft) thick in MW‐6. Depth to  groundwater at the site was measured between 15.85 feet below the TOC in monitoring well MW‐11 and  19.35 feet below TOC in monitoring well MW‐8 in October 2022. Based on the water levels measured  during this event in combination with historical relative TOC elevations reported by previous consultants,  groundwater elevations were determined for each site well. Based on these determined groundwater  elevations, site groundwater flow direction is to the southeast towards Smith River. This flow direction is  consistent with historical groundwater flow directions. Groundwater measurement data for this event and  historical events is included in Table 3, while a groundwater elevation map is included as Figure 3. A copy  of the field notes for the project and a photographic record are included as Appendix A.  Following the gauging of the wells and prior to sampling, the seven pre‐existing site monitoring wells were  purged of at least three volumes of groundwater through the use of new, individual, disposable bailers. The  samples were decanted directly from the dedicated bailers into laboratory‐prepared sample containers  holding appropriate preservative(s) as required. The containers were labeled with appropriate information  and the groundwater samples were transported in an ice‐chilled cooler under proper chain‐of‐custody (CoC)  procedures to Eurofins Environment Testing America, located in Savannah, Georgia for analysis of VOCs by  SM6200B. Copies of field notes associated with monitoring activities are included in Appendix A. A copy of  the CoC can be found in Appendix B. Field work operating procedures are outlined in Appendix C.     Groundwater Analytical Results  Analytical results for the samples collected from site monitoring wells indicated one targeted VOC at a  concentration exceeding the GCL and several targeted VOCs at concentrations exceeding the established  NCDEQ 2L Standards. Exceedances to ten times the NCDEQ 2B Standards was reported in monitoring wells  MW‐7 through MW‐11 and MW‐13 for benzene and MW‐10 and MW‐11 for toluene.      The following change in benzene concentration was observed between June 2022 and October 2022.  Well ID Sample Date Benzene  (ug/L) Sample Date Benzene  (ug/L) Percent Change  MW‐6 06/15/2022 882 10/17/2022 LNAPL Not Applicable  MW‐7 06/15/2022 344 10/17/2022 344 0 %  MW‐8 06/15/2022 188 10/17/2022 183 2.66% Decrease  MW‐9 06/15/2022 153 10/17/2022 146 4.58% Decrease  MW‐10 06/15/2022 1,410 10/17/2022 1,000 29.08% Decrease  MW‐11 06/15/2022 1,240 10/17/2022 1,090 12.10% Decrease  MW‐13 06/15/2022 76.2 10/17/2022 104 36.48% Increase  MW‐14 06/15/2022 <0.500 10/17/2022 0.704 100% Increase* (Levels  still below 2L Standard)  WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  11    The following change in benzene concentration was observed between December 2017 and October 2022.  Well ID Sample Date Benzene  (ug/L) Sample Date Benzene  (ug/L) Percent Change  MW‐6 12/19/2017 LNAPL  (0.15‐ft) 10/17/2022 LNAPL   (0.01‐ft) Not Applicable  MW‐7 12/19/2017 600 10/17/2022 344 42.67% Decrease  MW‐8 12/19/2017 470 10/17/2022 183 61.06% Decrease  MW‐9 12/19/2017 280 10/17/2022 146 47.86% Decrease  MW‐10 12/19/2017 2,500 10/17/2022 1,000 60.0% Decrease  MW‐11 12/19/2017 8,400 10/17/2022 1,090 87.02% Decrease    Based on the year over year decrease of benzene concentrations in site monitoring wells, some degree of  natural attenuation appears to be occurring throughout the site.  The presence of LNAPL in MW‐6 may be  due to the water level within the screened interval of the monitoring well.    These results are shown on Figure 4 and included in Table 4. A benzene isoconcentration map is provided  as Figure 5. Copies of the laboratory analytical report and CoC are included in Appendix B.     WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  12    F. CONCLUSIONS AND RECOMMENDATIONS This report documents the results of field activities conducted at the site for TA‐04, which included the  gauging, purging, and sampling of eight site monitoring wells MW‐6 through MW‐11, MW‐13, and MW‐14.  MW‐6 was discovered to contain LNAPL at the time of WR’s site visit and therefore was not sampled.  Conclusions based on observations, analytical data, and research relating to the release at the site combined  with historical information include the following:     Based on current and historical groundwater elevation data collected from the site, groundwater flows  in an overall southeasterly direction.   Analytical results for the samples collected from site monitoring wells indicated several targeted VOCs  at concentrations exceeding the established NCDEQ 2L Standards during the October 2022 sampling  event.  o Based on historical and current groundwater data for the site, the extent of groundwater  contamination at the facility has not been defined to levels equivalent to the 2L Standards.    Analytical results for the samples collected from monitoring wells MW‐10 and MW‐11 reported toluene  at a concentration exceeding ten times the NCDEQ 2B Standards during the October 2022 sampling  event.   Total xylenes were reported at concentrations exceeding the established GCLs in the sample collected  from monitoring well MW‐11 during the October 2022 sampling event.   When comparing benzene concentrations in groundwater data from December 2017 to benzene  concentrations in groundwater data collected in October 2022, all onsite monitoring wells have reduced  in concentrations by a minimum of 42.67%.   WR believes upgradient Incident # 13568 may be contributing to LNAPL in MW‐6 and Total VOC  concentrations observed in MW‐11. Based on WR’s review of NCDEQ UST Field Inspection Reports for  the Spray Exxon, the most recent inspection was performed in 2015 and deficiencies were noted with  the cathodic protection system.    LNAPL was discovered in monitoring well MW‐6 during the October 2022 monitoring event. LNAPL  has been historically measured in MW‐6 as recently as December 2017 and MW‐7 as recently as  December 2016.    According to the most recent receptor survey from March 2010, no water supply wells are located  within 1,500 feet of the site. However, Smith River is located within 500 feet of the former USTs basin  along the eastern boundary of the site. In addition, WR observed Tackett Branch within 500 feet of the  former USTs basin to the west‐southwest of the site. Tackett Branch drains into Smith River.   o The Smith River is classified as WS‐IV Critical waters upstream of the site and Class C  waters adjacent to, and downstream of the site.  o Tackett Branch is classified as Class C waters.        Based on the results of assessment and monitoring activities conducted at the site in association with this  TA, WR recommends the following:   WR recommends performing one additional sampling events and completing plume stability analysis  and trends after the second sampling event as a minimum of four sampling events are required to  establish concentration trends using the GSI Environmental Inc. (GSI) Mann‐Kendall Toolkit. If trends  are determined to be stable or decreasing, WR recommends fate & transport modeling.   If additional information regarding potential impacts from the upgradient Spray Exxon release to the  Former Eden Superior Car Wash site is desired, WR recommends installation of a temporary well in the  WithersRavenel Our People. Your Success.      Eden Superior Car Wash (Incident #30023) WR Project # 02172214.09  Groundwater Monitoring Report November 2022  13    NCDOT right‐of‐way across Boone Road or forensic analysis of the upgradient and downgradient  monitoring wells.  WR appreciates the opportunity to be of service in the completion of these assessment activities.  Should  you have questions, comments, or require additional information, please contact WR at your earliest  convenience. Figures DCV EAA DRAWN BY: 10/27/22 02172214.09 1 SUBJECT SITE ±0.23 ACRES SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: EDEN SUPERIOR CAR WASH (INCIDENT #30023) 102 BOONE ROAD EDEN, ROCKINGHAM COUNTY, NC GENERAL LOCATION MAP 1"=500 ' GRAPHIC SCALE 1 inch = 500 ft. 0 500250 1000 WithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 www.withersravenel.com FORMER EDEN SUPERIOR CAR WASH SMITH RIVERCIRCLE MART CITGO GAS STATION NCDEQ INCIDENT # 30032 CIRCLE MART (AKA 2 BROS FOOD MART)JOP'S SPEED SHOP AUTO REPAIR NCDEQ INCIDENT # 13568 FORMER SPRAY EXXON WES T M E A D O W R O A D BOONE ROADSITEFORMER UST / DISPENSER AREA MW-9 MW-10 MW-13 MW-14 MW-11 MW-8 MW-6 MW-7 APPROXIMATE EDGE OF RIVER APPROXIMATE CENTERLINE OF RIVER NCDOT - EDEN TRAFFIC CIRCLE NCDEQ INCIDENT #30022 DCVEAADRAWN BY:10/27/2202172214.092SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:EDEN SUPERIOR CAR WASH(INCIDENT #30023)102 BOONE ROADEDEN, ROCKINGHAM COUNTY, NCSITE MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.com1"=25 'GRAPHIC SCALE 1 inch = 25 ft. 0 2512.5 50 LEGEND TYPE II MONITORING WELL LOCATION FORMER USTs LOCATION NOTES: 1.) LOCATIONS ARE APPROXIMATE AND NOT EXACT. FORMER EDENSUPERIOR CARWASHSMITH RIVER CIRCLE MART CITGO GAS STATIONNCDEQ INCIDENT # 30032CIRCLE MART (AKA 2 BROS FOOD MART)CIRCLE DRIVE INPARKING LOTVACANTWEST MEADOW ROADBOONE ROAD FUELDISPENSERCANOPYSITEMW-8MW-7UST AREAMW-9UST AREAMW-13MW-14MW-6MW-11MW-10APPROXIMATE EDGEOF RIVER82.50(82.58)(80.70)(80.37)(80.49)(82.24)(81.56)(82.67)(81.99)82.0081.5081.0080.508 2 . 5 0 82 . 0 0 81.5 0 81.00 80.50 1"=25 'GRAPHIC SCALE1 inch = 25 ft.02512.550DCVEAADRAWN BY:10/27/2202172214.093SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:EDEN SUPERIOR CAR WASH(INCIDENT #30023)102 BOONE ROADEDEN, ROCKINGHAM COUNTY, NCGROUNDWATERELEVATION MAP(OCTOBER 2022)WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.comLEGENDGROUNDWATER ELEVATION (FEET)GROUNDWATER ELEVATION CONTOUR (FEET)ASSUMED GROUNDWATER FLOW DIRECTIONTYPE II MONITORING WELL LOCATIONFORMER USTs LOCATIONNOTES: 1.) LOCATIONS ARE APPROXIMATE AND NOT EXACT. 2.) GROUNDWATER CONTOURS DASHED WHERE INFERRED(84.00) FORMER EDENSUPERIOR CARWASHSMITH RIVER CIRCLE MART CITGO GAS STATIONNCDEQ INCIDENT # 30032CIRCLE MART (AKA 2 BROS FOOD MART)PARKING LOTVACANTWEST MEADOW ROADBOONE ROAD FUELDISPENSERCANOPYSITEUST AREAUST AREAMW-14MW-11MW-10APPROXIMATE EDGEOF RIVERAPPROXIMATECENTERLINEOF RIVERMW-8MW-7MW-9MW-13MW-6DCVEAADRAWN BY:10/31/2202172214.094SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:EDEN SUPERIOR CAR WASH(INCIDENT #30023)102 BOONE ROADEDEN, ROCKINGHAM COUNTY, NCGROUNDWATER RESULTS MAP(OCTOBER 2022)WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.com1"=25 'GRAPHIC SCALE1 inch = 25 ft.02512.550LEGENDTYPE II MONITORING WELL LOCATIONFORMER USTs LOCATIONNOTES: 1.) LOCATIONS ARE APPROXIMATE AND NOT EXACT. FORMER EDEN SUPERIOR CAR WASH SMITHRIVERCIRCLE MART CITGO GAS STATION NCDEQ INCIDENT # 30032 CIRCLE MART (AKA 2 BROS FOOD MART) CIRCLE DRIVE IN PARKING LOT VACANT WEST M E A D O W R O A D BOONE ROADC H U R C H S T R E E T FUEL DISPENSER CANOPY SITE UST AREA UST AREA MW-14 MW-11 MW-10 APPROXIMATE EDGE OF RIVER APPROXIMATE CENTERLINE OF RIVER MW-8 MW-7 MW-9 MW-13 ESTIMATED EXTENTS OF GROUNDWATER 2L EXCEEDANCES ESTIMATED EXTENT OF GROUNDWATER GCL EXCEEDANCES. JOP'S SPEED SHOP AUTO REPAIR NCDEQ INCIDENT # 13568 FORMER SPRAY EXXON MW-6 ESTIMATED EXTENT OF GROUNDWATER BENZENE CONTAMINATION AT CONCENTRATIONS EXCEEDING NC 2L STANDARD. ESTIMATED EXTENT OF LNAPL. 1"=30 ' GRAPHIC SCALE 1 inch = 30 ft. 0 3015.5 60 DCV EAA DRAWN BY: 10/31/22 02172214.09 5 SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: EDEN SUPERIOR CAR WASH (INCIDENT #30023) 102 BOONE ROAD EDEN, ROCKINGHAM COUNTY, NC BENZENE ISOCONCENTRATION MAP (OCTOBER 2022) WithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479 www.withersravenel.com LEGEND ESTIMATED EXTENT OF GROUNDWATER CONTAMINATION AT CONCENTRATIONS EXCEEDING NC 2L STANDARD(S) ESTIMATED EXTENTS OF GROUNDWATER CONTAMINATION AT CONCENTRATIONS EXCEEDING NC GCL STANDARDS ESTIMATED EXTENT OF GROUNDWATER BENZENE CONTAMINATION AT CONCENTRATIONS EXCEEDING NC 2L STANDARD ESTIMATED EXTENTS OF LNAPL TYPE II MONITORING WELL LOCATION FORMER USTs LOCATION NOTES: 1.) LOCATIONS ARE APPROXIMATE AND NOT EXACT. 2.) ISOCONTOUR LINES ARE DASHED WHERE INFERRED. WEST M E A D O W R O A D CH U R C H S T R E E T BOONE ROADVACANT SMITH RIVERT A C K E T T B R AN CH SITE RIVER DRIVE EARLY A V E N U E THE BOU L E V A R D CHESTNUT STREETMORGAN ROADSHORT MORGAN ROAD1"=200 'GRAPHIC SCALE 1 inch = 200 ft. 0 200100 400 LEGEND NOTES: 1.) LOCATIONS ARE APPROXIMATE AND NOT EXACT. 2.) NO WATER SUPPLY WELLS WERE DISCOVERED WITHIN 1,000 FEET OF THE SITE BY TERRAQUEST DURING A MARCH 2010 RECEPTOR SURVEY.DVLADRAWN BY:07/27/2202172214.096SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:EDEN SUPERIOR CAR WASH(INCIDENT #30023)102 BOONE ROADEDEN, ROCKINGHAM COUNTY, NCVICINITY MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.com Tables UST IDNumberCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofUSTWas release associated with UST System? (Y/N)1 1,000Single Wall Steel3.667 x 12 Unknown UnknownPermanently Closed By Removal (March 2010)Y2 550Single Wall Steel3 x 5 Unknown UnknownPermanently Closed By Removal (March 2010)YAST IDNumberCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofASTWas release associated with AST System? (Y/N)IncidentNumberMaterialReleasedDateofRelease30023 Gasoline August 2001Notes:1)  UST Information obtained from reports completed by previous consultants.N/ATable 1Site History:  UST/AST System & Other Release InformationEDEN SUPERIOR CAR WASHDuring limited site assessment activities in July/August 2001 associated with highway improvements to NC Highway 700 and Bridge Number 75 crossing the Smith River, Solutions Industrial & Environmental Services, Inc., advanced seven soil borings and collected soil samples at the Rush Properties, LLC property located at 102 Boone Road (i.e., Eden Superior Car Wash site). Prior to the advancement of soil borings, a geophysical survey was conducted of the area.  Two anomalies suspected to be underground storage tanks (USTs) were found in front of the building using an EM‐61 ferrous metal locator. Analytical results of soil samples collected showed total petroleum hydrocarbons (TPH) concentrations exceeding 10 milligrams per kilogram (mg/kg) in six of the seven soil samples collected.  The highest TPH‐Gasoline Range Organic (GRO) concentration was 4,700 mg/kg and TPH‐Diesel Range Organics (DRO) was 2,200 mg/kg in the sample collected from soil boring B2 near the suspected USTs. During removal activities in March 2010, moderate rust and pitting, but no visible holes, was observed on the removed USTs. Product line/dispenser feature or associated feature sampling information was not provided in the UST closure report by Terraquest.102 BOONE ROADEDEN, ROCKINGHAM COUNTY, NCDescription of ReleaseINCIDENT # 30023Current/LastContentsGasolineCurrent/LastContentsGasolinePage 1 of 1 Easting Northing001 Smith River Eastern Adjacent N/A N/A 100 Down‐Gradient 1777226.8301 1003233.2601002 Tackett Branch Southwest of Site N/A N/A 280 Cross‐Gradient 1776818.3940 1003143.5135EDEN, ROCKINGHAM COUNTY, NCTABLE 2ADDITIONAL RECEPTOR INFORMATIONEDEN SUPERIOR CAR WASHINCIDENT # 30023102 BOONE ROADLocation Relative to Groundwater FlowLocation of Significant Points(NC State Plane NAD 83 Feet)Notes:        1.)  No additional receptors were identified within 1,000 feet of the source area in the Initial Abatement Action Report dated April 30, 2010 and produced by Terraquest Environmental Consultants       2.)  WR has not performed a receptor survey in association with the subject property and thus the information provided above has not been verified. Receptor IDDescription LocationContactInformationUsageDistance from Source Area(feet) Well ID Date Installed Top of  Casing  Elevation (ft) Well  Diameter  (in) Well Casing  Depth (ft‐BGS) Screen  Interval  (ft‐BGS) Date Water  Level  Measured Depth to  LNAPL  (ft‐BTOC) Depth To Water  (ft‐BTOC) LNAPL  Thickness (ft) Groundwater  Elevation (ft) 12/15/16 18.20 18.35 0.15 81.25 12/19/17 18.32 18.33 0.01 81.15 03/04/21 ‐‐16.14 ‐‐83.33 07/26/21 ‐‐17.30 ‐‐82.17 06/15/22 ‐‐17.60 ‐‐81.87 10/17/22 17.91 17.92 0.01 81.56 12/15/16 17.29 17.30 0.01 82.20 12/19/17 ‐‐17.42 ‐‐82.07 03/04/21 ‐‐15.33 ‐‐84.16 07/26/21 ‐‐16.50 ‐‐82.99 06/15/22 ‐‐16.70 ‐‐82.79 10/17/22 ‐‐16.82 ‐‐82.67 12/19/17 ‐‐19.68 ‐‐80.37 03/04/21 ‐‐17.91 ‐‐82.14 07/26/21 ‐‐18.95 ‐‐81.10 06/15/22 ‐‐18.94 ‐‐81.11 10/17/22 ‐‐19.35 ‐‐80.70 12/19/17 ‐‐17.71 ‐‐82.23 03/04/21 ‐‐15.93 ‐‐84.01 07/26/21 ‐‐17.15 ‐‐82.79 06/15/22 ‐‐17.21 ‐‐82.73 10/17/22 ‐‐17.36 ‐‐82.58 12/19/17 ‐‐18.91 ‐‐81.91 03/04/21 ‐‐16.92 ‐‐83.90 07/26/21 ‐‐18.05 ‐‐82.77 06/15/22 ‐‐18.32 ‐‐82.50 10/17/22 ‐‐18.58 ‐‐82.24 12/19/17 ‐‐17.45 ‐‐80.39 03/04/21 ‐‐13.84 ‐‐84.00 07/26/21 ‐‐19.56 ‐‐78.28 06/15/22 ‐‐15.82 ‐‐82.02 10/17/22 ‐‐15.85 ‐‐81.99 MW‐12 7/27/2021 07/27/21 ‐‐18.10 ‐‐80.84 06/15/22 ‐‐18.20 ‐‐80.74 10/17/22 ‐‐18.57 ‐‐80.37 07/27/21 ‐‐18.45 ‐‐80.99 06/15/22 ‐‐18.61 ‐‐80.83 10/17/22 ‐‐18.95 ‐‐80.49 1) 2) 3) 4) 5) 12/18/2017 MW‐10 8.5‐23.5 TABLE 3 MONITORING WELL CONSTRUCTION AND LIQUID LEVEL DATA EDEN SUPERIOR CAR WASH EDEN, ROCKINGHAM COUNTY, NC 102 BOONE ROAD INCIDENT # 30023 MW‐6 99.498/19/2003MW‐7 10.002.00100.05 Not Installed ‐ Refusal on Rock at 15 ft bgs MW‐11 6‐216.002.0097.842/5/2018 If light non‐aqueous phase liquid (LNAPL) is present in groundwater, elevation is calculated by [TOC‐DTW]+[LNAPL thickness x 0.8581]. NM = Not Measured. BGS ‐ Below Ground Surface. BTOC ‐ Below Top of Casing. Notes:  Top of Casing (TOC) elevations & data provided prior to March 2021 by previous consultants. MW‐9 8‐238.002.0099.478/30/2002 MW‐8 15‐2515.002.00 9‐249.002.0099.9412/18/2017 10‐25 8.502.00 MW‐14 15‐3015.002.0098.947/27/2021MW‐13 10‐2010.002.0099.447/27/2021 100.822/5/2018 Page 1 of 1 CalculatedAcetone Benzene Butylbenzene, n‐Butylbenzene, sec‐ Butylbenzene, tert‐ Chlorobenzene Chloromethane Dibromomethane Dichlorobenzene, 1,4‐ Dichloropropane, 1,2‐ Ethylbenzene Isopropyl Ether (DIPE)Isopropylbenzene (Cumene) Isopropyltoluene, 4‐ MEK (2‐Butanone )Methyl‐tert‐Butyl Ether Naphthalene Propylbenzene, n‐Toluene Trimethylbenzene, 1,2,4‐Trimethylbenzene, 1,3,5‐Xylenes, m,p‐ Xylene, o‐Xylenes, total 67‐64‐171‐43‐2 104‐51‐8 135‐98‐898‐06‐6 108‐90‐774‐87‐374‐95‐3 106‐46‐778‐87‐5 100‐41‐4 108‐20‐398‐82‐899‐87‐678‐93‐3 1634‐04‐491‐20‐3 103‐65‐1 108‐88‐395‐63‐6 108‐67‐8108‐38‐3/106‐495‐47‐6 1330‐20‐712/19/1703/04/21<100858242 106 15.3<5.00 <5.00 <5.00 <5.00 <5.0056.6 220 256 6.74<50.025.2<10.0699 22.8 58.6 27.6 78.7 11.2 89.907/26/21<10099922.2 14.5<20.0 <5.00 <5.00 <5.00 <5.00 <5.0037.4 198 129<5.00 <50.0 <10.010.5 289 24.6 13.2 6.34 47.9<5.0047.906/15/22<10088244.7 22.4<20.0 <5.00 <5.00 <5.00 <5.00 <5.0059.3 145 93.3<5.00 <50.018.4 19.1 250 31.3 15.9 7.2 66.9 7.73 74.610/17/2212/19/17<0.5600NR NR NR NR NR NR NR NR2500 15 130NR NR <0.575 400 82 65 30NR NR39003/04/21<10036230.4 14.8<5.00 <5.00 <5.005.12<5.00 <5.00188 118 66<5.00 <50.055.4<10.0203 31.8<5.00 <5.0052.9 5.91 58.807/26/21<10.050325.4 13.7 2.75<0.500 <0.500 <0.500 <0.500 <0.500191 152 85.2 3.56<5.00 <1.0013.3 243 46 3.45 3.8 76.6 7.71 84.306/15/22<10034437.2 18.6<20.0 <5.00 <5.00 <5.00 <5.00 <5.00269 73.7 122 5.65<50.017.4 14.5 382 32.6 5.5<5.0058.6 5.53 64.110/17/2241.634425.77.271.41<2.00 <2.00 <10.0 <2.00 <2.00207 67.6 57.5 3.43 16.8 10.6<10.0172 27.9<2.002.05 37.4 4.08 41.512/19/17<0.5470NR NR NR NR NR NR NR NR120 12 270NR NR <0.55.1 690 39 1.5 0.72NR NR3203/04/21<10019666.4 37.3 7.88<5.00 <5.009.99<5.00 <5.0064.9 19.2 215 7.73<50.0 <10.0 <10.0552 20.8<5.00 <5.0014.7<5.0014.707/26/21<10.020536.9 23.1 5.94<0.5001.02<0.500 <0.500 <0.50066.8 23 201 5.34<5.00 <1.002.53 510 20.2 0.952<0.50015.5 3.46 1906/15/22<10018843.1 27.5<20.0 <5.00 <5.00 <5.00 <5.00 <5.0063 16.4 230 6.2<50.0 <10.0 <10.0587 19.7<5.00 <5.0017.1<5.0017.110/17/22<12518324.1 15.8 3.93<5.00 <5.00 <25 <5.00 <5.0053.5 18.7 144<5.00 <1253.69<25358 18.8<5.00 <5.0012.5<2515.312/19/1744280NR NR NR NR NR NR NR NR360 32 180NR NR <0.553 440 34 290 16NR NR28003/04/21<10.01626.45 4.69 1.37<0.500 <0.500 <0.500 <0.5002.96 34.4 52.6 24.6 1.93<5.009.32 10.5 52.5 20.6 30.2 2.89 59.2 6.32 65.507/26/21<10.02184.03 2.78<2.00 <0.500 <0.500 <0.500 <0.500 <0.50039.5 48.3 29.8 1.28<5.00 <1.004.09 67.3 29 11.9 2.88 74.5 8.45 8306/15/22<10.01534.81 5.03 2<0.500 <0.500 <0.500 <0.500 <0.50012.4 48.5 25.8 2.03<5.007.68 3.39 49.4 16.4 7.45 1.56 44.2 5.63 49.810/17/2222.11464.95 3.19 1.41 0.248<1.00 <5.00 <1.00 <1.0013.6 40.8 17.1 1.65 10.2 4.11 3.54 35.6 15.9 6.05 1.24 33.7 3.85 37.602/06/18<0.52,500NR NR NR NR NR NR NR NR2600 110 93NR NR <0.5250 2605701400 510NR NR430003/04/21<10052871.9 36.6 6.2<5.00 <5.00 <5.00 <5.00 <5.00306 95.6 90.2 5.81<50.019.2 24.3 327 77.4 192 75.1 328 38.9 36707/26/21<10.01,07025.4 16.7 3.22<0.500 <0.500 <0.500 <0.500 <0.500554 116 81.1 2.18<5.00 <1.0055.4<0.500168153 53.1 636 54.1 69006/15/22<1001,41021.3 9.51<20.0 <5.00 <5.00 <5.00 <5.00 <5.001310 100 66.5<5.00 <50.0 <10.069.9 191220234 65.3 927 85.6 101010/17/223611,00024.5 10.5<10.0 <10.0 <10.0 <50 <10.0 <10.0842<10.061.9<10.0 <250 <10.0 <50182176106 36.7 530 63.6 59302/06/18<0.58,400NR NR NR NR NR NR NR NR4800 280 300NR NR <0.5220 370130001200 470NR NR1800003/04/21<10002,42057.1<50.0 <50.0 <50.0 <50.0 <50.0 <50.0 <50.07890<50.0317<50.0 <500 <1001220 96622807060 1800‐‐2740007/26/21<10001,330<50.0 <50.0 <200 <50.0 <50.0 <50.0 <50.0 <50.05980<50.0200<50.0 <500 <1001020 58612804510 1070 15700 6180 2190006/15/22<10001,240<50.0 <50.0 <200 <50.0 <50.0 <50.0 <50.0 <50.06530<50.0199<50.0 <500 <100839 4909683900 921 19200 6450 2570010/17/22<50001,090568 143<200 <200 <200 <1000 <200 <20012000<200681<200 <5000 <2002130 226095914500 4260 40800 1250053300MW‐1207/26/2107/27/21<10.018414.1 13.7 5.87 6.58<0.500 <0.5003.03<0.50013.1 21.5 64.9 1.86<5.00 <1.002.25 139 22.6<0.500 <0.50021.7 3.86 25.606/15/22<10.076.2 10.3 10.8 5.76 10.1<0.500 <0.5004.77<0.5005.8 26.8 51.2 1.94<5.00 <1.00 <1.0091.8 12.5<0.500 <0.50011.9 3.07 1510/17/2229.1 104 8.54 6.64 3.57 6.69<1.00 <5.002.78<1.0010.1 28 39.1<1.0013 1.97<5.0071.9 14.8<1.00 <1.0010.6 2.5 13.107/27/21<10.0340<0.5000.642<2.00 <0.500 <0.500 <0.500 <0.500 <0.5001.13 233 13.8<0.500 <5.003.81 2.27 13.5 8.13<0.500 <0.5006.82 3.21 1006/15/22<10.0 <0.500 <0.500 <0.500 <2.00 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006.1<0.500 <0.500 <5.00 <1.00 <1.00 <0.500 <0.500 <0.500 <0.500 <1.00 <0.500 <0.50010/17/22<25.00.704<1.00 <1.00 <1.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.002.76<1.00 <1.00 <25.0 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <5.00 <5.00 <10.0Field Blank 10/17/22<25.0 <1.00 <1.00 <1.00 <1.00 <1.00 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00<1.00 <1.00 <25.0 <1.00 <5.00 <1.00 <1.00 <1.00 <1.00 <5.00 <5.00 <10.06000 1 70 70 70 50 3 NL 6 0.6 600 70 70 25 4000 20 6 70 600 400 400 500 500 500NL11.9NLNLNLNLNLNLNLNLNLNLNLNLNLNLNLNL11NLNLNLNLNL6,000,000 5,000 5,900 8,800 14,750 50,000 3,000 NL 405 600 80,000 70,000 30,500 11,700 4,000,000 20,000 6,000 26,100 260,000 28,500 24,100 50000 50000 50000Notes:1)All results provided in ug/L (micrograms per liter) or parts per billion.2)3)4)GCLs for Groundwater = NCDENR UST Section Gross Contamination Levels for Groundwater.NL=  No Regulatory Limit EstablishedNR= Compound Not Reported by Previous Consultant(s)Result= Result Exceeds Laboratory Detection LimitsResult= Result Exceeds 2L StandardResultResult= Result Exceeds GCL ValueNot Installed ‐ Refusal on RockNC 2L Standard MW‐10MW‐11MW‐6MW‐7MW‐8MW‐9MW‐13MW‐14Not Sampled due to LNAPLNorth Carolina Surface Water Standards= Result Exceeds Ten Times the NC Surface Water StandardsTABLE 4SUMMARY OF GROUNDWATER ANALYTICAL RESULTSEDEN SUPERIOR CAR WASHINCIDENT # 30023102 BOONE ROADCompounds analyzed for by laboratory but not listed were not detected above laboratory detection limits. See the laboratory report included  in the Appendix for a full list of constituents. NC 2L Standard ‐ North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L.EDEN, ROCKINGHAM COUNTY, NCSampleIDDateCollectedAnalytical Method6200B ‐ Volatile Organic CompoundsNot Sampled due to LNAPLGCLs for GroundwaterPage 1 of 1 Appendix A Field Notes and Photographic Record Photographic Record Project Name: Eden Superior Car Wash Project No. 02172214.09 Frame No. 1 Description: Northern elevation of site building (monitoring well MW-9 right side of frame). Frame No. 2 Description: Monitoring well MW-6 located in the northwest portion of the south adjoining property. LNAPL present at 0.0104-ft (0.125-in) in MW-6. Photographic Record Project Name: Eden Superior Car Wash Project No. 02172214.09 Frame No. 3 Description: Monitoring well MW-7 located in the western end of the site. Frame No. 4 Description: Monitoring well MW-8 located in the northern portion of the site adjoining the site building. Photographic Record Project Name: Eden Superior Car Wash Project No. 02172214.09 Frame No. 5 Description: Monitoring well MW-11 located on the south adjoining property. Frame No. 6 Description: Monitoring well MW-13 located in the northeastern portion of the site. Photographic Record Project Name: Eden Superior Car Wash Project No. 02172214.09 Frame No. 7 Description: Monitoring well MW-14 located in the southeastern portion of the site. Appendix B Laboratory Report and Chain of Custody ANALYTICAL REPORT Eurofins Savannah 5102 LaRoche Avenue Savannah, GA 31404 Tel: (912)354-7858 Laboratory Job ID: 680-223491-1 Client Project/Site: Eden Superior Car Wash For: WithersRavenel Inc 115 MacKenan Drive Cary, North Carolina 27511 Attn: David Vail Authorized for release by: 10/27/2022 8:11:53 PM John Andros, Project Manager I (404)944-4744 John.Andros@et.eurofinsus.com The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2 3 4 5 6 7 8 9 10 11 12 Definitions/Glossary Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Qualifiers GC/MS VOA Qualifier Description *+LCS and/or LCSD is outside acceptance limits, high biased. Qualifier E Result exceeded calibration range. F1 MS and/or MSD recovery exceeds control limits. F2 MS/MSD RPD exceeds control limits J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Savannah Page 2 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Sample Summary Client: WithersRavenel Inc Job ID: 680-223491-1 Project/Site: Eden Superior Car Wash Lab Sample ID Client Sample ID Matrix Collected Received 680-223491-1 MW-7 GW 10/17/22 12:20 10/19/22 08:00 680-223491-2 MW-8 GW 10/17/22 12:10 10/19/22 08:00 680-223491-3 MW-9 GW 10/17/22 13:00 10/19/22 08:00 680-223491-4 MW-13 GW 10/17/22 13:30 10/19/22 08:00 680-223491-5 MW-14 GW 10/17/22 13:50 10/19/22 08:00 680-223491-6 MW-10 GW 10/17/22 11:15 10/19/22 08:00 680-223491-7 MW-11 GW 10/17/22 11:30 10/19/22 08:00 680-223491-8 Field Blank Water 10/17/22 14:45 10/19/22 08:00 Eurofins SavannahPage 3 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Case Narrative Client: WithersRavenel Inc Job ID: 680-223491-1 Project/Site: Eden Superior Car Wash Job ID: 680-223491-1 Laboratory: Eurofins Savannah Narrative Job Narrative 680-223491-1 Receipt The samples were received on 10/19/2022 8:00 AM. Unless otherwise noted below, the samples arrived in good condition, and, where required, properly preserved and on ice. The temperature of the cooler at receipt time was 2.1°C GC/MS VOA Method SM6200_B: The following sample was diluted due to the abundance of non-target analytes: MW-8 (680-223491-2). Elevated reporting limits (RLs) are provided. No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page. Eurofins SavannahPage 4 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-1Client Sample ID: MW-7 Matrix: GWDate Collected: 10/17/22 12:20 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds RL MDL 41.6 J 50.0 20.0 ug/L 10/25/22 18:16 2 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Acetone 2.00 0.260 ug/L 10/25/22 18:16 2344Benzene 2.00 1.08 ug/L 10/25/22 18:16 2NDBromobenzene 2.00 0.420 ug/L 10/25/22 18:16 2NDBromochloromethane 2.00 1.00 ug/L 10/25/22 18:16 2NDBromodichloromethane 10.0 0.500 ug/L 10/25/22 18:16 2NDBromoform 2.00 1.96 ug/L 10/25/22 18:16 2NDBromomethane 2.00 0.380 ug/L 10/25/22 18:16 2NDCarbon tetrachloride 2.00 0.300 ug/L 10/25/22 18:16 2NDChlorobenzene 2.00 0.480 ug/L 10/25/22 18:16 2NDChlorodibromomethane 2.00 1.52 ug/L 10/25/22 18:16 2NDChloroethane 2.00 2.00 ug/L 10/25/22 18:16 2NDChloroform 2.00 0.640 ug/L 10/25/22 18:16 2ND*+Chloromethane 2.00 1.14 ug/L 10/25/22 18:16 2ND2-Chlorotoluene 2.00 1.12 ug/L 10/25/22 18:16 2ND4-Chlorotoluene 2.00 0.400 ug/L 10/25/22 18:16 2NDcis-1,2-Dichloroethene 10.0 1.00 ug/L 10/25/22 18:16 2NDcis-1,3-Dichloropropene 10.0 3.00 ug/L 10/25/22 18:16 2ND1,2-Dibromo-3-Chloropropane 2.00 0.460 ug/L 10/25/22 18:16 2ND1,2-Dibromoethane 10.0 0.440 ug/L 10/25/22 18:16 2NDDibromomethane 2.00 1.00 ug/L 10/25/22 18:16 2ND1,2-Dichlorobenzene 2.00 1.08 ug/L 10/25/22 18:16 2ND1,3-Dichlorobenzene 2.00 1.28 ug/L 10/25/22 18:16 2ND1,4-Dichlorobenzene 2.00 1.70 ug/L 10/25/22 18:16 2NDDichlorodifluoromethane 2.00 1.00 ug/L 10/25/22 18:16 2ND1,1-Dichloroethane 2.00 0.380 ug/L 10/25/22 18:16 2ND1,2-Dichloroethane 2.00 1.00 ug/L 10/25/22 18:16 2ND1,1-Dichloroethene 2.00 1.00 ug/L 10/25/22 18:16 2ND1,2-Dichloropropane 2.00 1.00 ug/L 10/25/22 18:16 2ND1,3-Dichloropropane 2.00 1.00 ug/L 10/25/22 18:16 2ND2,2-Dichloropropane 2.00 1.00 ug/L 10/25/22 18:16 2ND1,1-Dichloropropene 2.00 0.400 ug/L 10/25/22 18:16 267.6Di-isopropyl ether (DIPE) 200 48.0 ug/L 10/25/22 18:16 2NDEthanol 2.00 1.00 ug/L 10/25/22 18:16 2207Ethylbenzene 10.0 1.80 ug/L 10/25/22 18:16 2ND*+Hexachlorobutadiene 50.0 2.80 ug/L 10/25/22 18:16 2ND2-Hexanone 2.00 1.06 ug/L 10/25/22 18:16 257.5Isopropylbenzene 2.00 1.42 ug/L 10/26/22 19:37 23.434-Isopropyltoluene 10.0 6.00 ug/L 10/25/22 18:16 2NDMethylene Chloride 50.0 5.20 ug/L 10/25/22 18:16 216.8 JMethyl ethyl ketone (MEK) 50.0 3.60 ug/L 10/25/22 18:16 2ND4-Methyl-2-pentanone 2.00 0.440 ug/L 10/25/22 18:16 210.6Methyl-tert-butyl Ether (MTBE) 10.0 1.26 ug/L 10/25/22 18:16 237.4m,p-Xylene 10.0 6.00 ug/L 10/25/22 18:16 2NDNaphthalene 2.00 1.52 ug/L 10/26/22 19:37 225.7n-Butylbenzene 2.00 1.38 ug/L 10/25/22 18:16 2172n-Propylbenzene 10.0 1.20 ug/L 10/25/22 18:16 24.08 Jo-Xylene 2.00 1.40 ug/L 10/25/22 18:16 27.27sec-Butylbenzene 2.00 2.00 ug/L 10/25/22 18:16 2NDStyrene Eurofins Savannah Page 5 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-1Client Sample ID: MW-7 Matrix: GWDate Collected: 10/17/22 12:20 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 1.41 J 2.00 1.26 ug/L 10/25/22 18:16 2 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier tert-Butylbenzene 2.00 0.320 ug/L 10/25/22 18:16 2ND1,1,1,2-Tetrachloroethane 2.00 1.00 ug/L 10/25/22 18:16 2ND1,1,2,2-Tetrachloroethane 2.00 1.80 ug/L 10/25/22 18:16 2NDTetrachloroethene 2.00 0.820 ug/L 10/25/22 18:16 227.9Toluene 2.00 1.00 ug/L 10/25/22 18:16 2NDtrans-1,2-Dichloroethene 10.0 0.400 ug/L 10/25/22 18:16 2NDtrans-1,3-Dichloropropene 2.00 1.80 ug/L 10/25/22 18:16 2ND*+1,2,3-Trichlorobenzene 2.00 1.64 ug/L 10/25/22 18:16 2ND*+1,2,4-Trichlorobenzene 2.00 0.360 ug/L 10/25/22 18:16 2ND1,1,1-Trichloroethane 10.0 0.420 ug/L 10/25/22 18:16 2ND1,1,2-Trichloroethane 2.00 0.300 ug/L 10/25/22 18:16 2NDTrichloroethene 2.00 1.04 ug/L 10/25/22 18:16 2NDTrichlorofluoromethane 10.0 1.68 ug/L 10/25/22 18:16 2ND1,2,3-Trichloropropane 2.00 1.64 ug/L 10/25/22 18:16 2ND1,2,4-Trimethylbenzene 2.00 1.12 ug/L 10/25/22 18:16 22.051,3,5-Trimethylbenzene 50.0 1.86 ug/L 10/25/22 18:16 2NDVinyl acetate 2.00 1.00 ug/L 10/25/22 18:16 2NDVinyl chloride 20.0 3.20 ug/L 10/25/22 18:16 241.5Xylene (total) 4-Bromofluorobenzene 97 72-119 10/25/22 18:16 2 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 4-Bromofluorobenzene 98 10/26/22 19:37 272-119 Dibromofluoromethane 88 10/25/22 18:16 275-126 Dibromofluoromethane 94 10/26/22 19:37 275-126 Toluene-d8 (Surr)104 10/25/22 18:16 264-132 Toluene-d8 (Surr)97 10/26/22 19:37 264-132 Eurofins Savannah Page 6 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-2Client Sample ID: MW-8 Matrix: GWDate Collected: 10/17/22 12:10 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds RL MDL ND 125 50.0 ug/L 10/25/22 18:41 5 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Acetone 5.00 0.650 ug/L 10/25/22 18:41 5183Benzene 5.00 2.70 ug/L 10/25/22 18:41 5NDBromobenzene 5.00 1.05 ug/L 10/25/22 18:41 5NDBromochloromethane 5.00 2.50 ug/L 10/25/22 18:41 5NDBromodichloromethane 25.0 1.25 ug/L 10/25/22 18:41 5NDBromoform 5.00 4.90 ug/L 10/25/22 18:41 5NDBromomethane 5.00 0.950 ug/L 10/25/22 18:41 5NDCarbon tetrachloride 5.00 0.750 ug/L 10/25/22 18:41 5NDChlorobenzene 5.00 1.20 ug/L 10/25/22 18:41 5NDChlorodibromomethane 5.00 3.80 ug/L 10/25/22 18:41 5NDChloroethane 5.00 5.00 ug/L 10/25/22 18:41 5NDChloroform 5.00 1.60 ug/L 10/25/22 18:41 5ND*+Chloromethane 5.00 2.85 ug/L 10/25/22 18:41 5ND2-Chlorotoluene 5.00 2.80 ug/L 10/25/22 18:41 5ND4-Chlorotoluene 5.00 1.00 ug/L 10/25/22 18:41 5NDcis-1,2-Dichloroethene 25.0 2.50 ug/L 10/25/22 18:41 5NDcis-1,3-Dichloropropene 25.0 7.50 ug/L 10/25/22 18:41 5ND1,2-Dibromo-3-Chloropropane 5.00 1.15 ug/L 10/25/22 18:41 5ND1,2-Dibromoethane 25.0 1.10 ug/L 10/25/22 18:41 5NDDibromomethane 5.00 2.50 ug/L 10/25/22 18:41 5ND1,2-Dichlorobenzene 5.00 2.70 ug/L 10/25/22 18:41 5ND1,3-Dichlorobenzene 5.00 3.20 ug/L 10/25/22 18:41 5ND1,4-Dichlorobenzene 5.00 4.25 ug/L 10/25/22 18:41 5NDDichlorodifluoromethane 5.00 2.50 ug/L 10/25/22 18:41 5ND1,1-Dichloroethane 5.00 0.950 ug/L 10/25/22 18:41 5ND1,2-Dichloroethane 5.00 2.50 ug/L 10/25/22 18:41 5ND1,1-Dichloroethene 5.00 2.50 ug/L 10/25/22 18:41 5ND1,2-Dichloropropane 5.00 2.50 ug/L 10/25/22 18:41 5ND1,3-Dichloropropane 5.00 2.50 ug/L 10/25/22 18:41 5ND2,2-Dichloropropane 5.00 2.50 ug/L 10/25/22 18:41 5ND1,1-Dichloropropene 5.00 1.00 ug/L 10/25/22 18:41 518.7Di-isopropyl ether (DIPE) 500 120 ug/L 10/25/22 18:41 5NDEthanol 5.00 2.50 ug/L 10/25/22 18:41 553.5Ethylbenzene 25.0 4.50 ug/L 10/25/22 18:41 5ND*+Hexachlorobutadiene 125 7.00 ug/L 10/25/22 18:41 5ND2-Hexanone 5.00 2.65 ug/L 10/25/22 18:41 5144Isopropylbenzene 5.00 3.55 ug/L 10/25/22 18:41 5ND*+4-Isopropyltoluene 25.0 15.0 ug/L 10/25/22 18:41 5NDMethylene Chloride 125 13.0 ug/L 10/25/22 18:41 5NDMethyl ethyl ketone (MEK) 125 9.00 ug/L 10/25/22 18:41 5ND4-Methyl-2-pentanone 5.00 1.10 ug/L 10/25/22 18:41 53.69 JMethyl-tert-butyl Ether (MTBE) 25.0 3.15 ug/L 10/25/22 18:41 512.5 Jm,p-Xylene 25.0 15.0 ug/L 10/25/22 18:41 5NDNaphthalene 5.00 3.80 ug/L 10/26/22 20:03 524.1n-Butylbenzene 5.00 3.45 ug/L 10/25/22 18:41 5358n-Propylbenzene 25.0 3.00 ug/L 10/25/22 18:41 5NDo-Xylene 5.00 3.50 ug/L 10/25/22 18:41 515.8sec-Butylbenzene 5.00 5.00 ug/L 10/25/22 18:41 5NDStyrene Eurofins Savannah Page 7 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-2Client Sample ID: MW-8 Matrix: GWDate Collected: 10/17/22 12:10 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 3.93 J 5.00 3.15 ug/L 10/25/22 18:41 5 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier tert-Butylbenzene 5.00 0.800 ug/L 10/25/22 18:41 5ND1,1,1,2-Tetrachloroethane 5.00 2.50 ug/L 10/25/22 18:41 5ND1,1,2,2-Tetrachloroethane 5.00 4.50 ug/L 10/25/22 18:41 5NDTetrachloroethene 5.00 2.05 ug/L 10/25/22 18:41 518.8Toluene 5.00 2.50 ug/L 10/25/22 18:41 5NDtrans-1,2-Dichloroethene 25.0 1.00 ug/L 10/25/22 18:41 5NDtrans-1,3-Dichloropropene 5.00 4.50 ug/L 10/25/22 18:41 5ND*+1,2,3-Trichlorobenzene 5.00 4.10 ug/L 10/25/22 18:41 5ND*+1,2,4-Trichlorobenzene 5.00 0.900 ug/L 10/25/22 18:41 5ND1,1,1-Trichloroethane 25.0 1.05 ug/L 10/25/22 18:41 5ND1,1,2-Trichloroethane 5.00 0.750 ug/L 10/25/22 18:41 5NDTrichloroethene 5.00 2.60 ug/L 10/25/22 18:41 5NDTrichlorofluoromethane 25.0 4.20 ug/L 10/25/22 18:41 5ND1,2,3-Trichloropropane 5.00 4.10 ug/L 10/25/22 18:41 5ND1,2,4-Trimethylbenzene 5.00 2.80 ug/L 10/25/22 18:41 5ND1,3,5-Trimethylbenzene 125 4.65 ug/L 10/25/22 18:41 5NDVinyl acetate 5.00 2.50 ug/L 10/25/22 18:41 5NDVinyl chloride 50.0 8.00 ug/L 10/25/22 18:41 515.3 JXylene (total) 4-Bromofluorobenzene 95 72-119 10/25/22 18:41 5 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 4-Bromofluorobenzene 100 10/26/22 20:03 572-119 Dibromofluoromethane 89 10/25/22 18:41 575-126 Dibromofluoromethane 94 10/26/22 20:03 575-126 Toluene-d8 (Surr)103 10/25/22 18:41 564-132 Toluene-d8 (Surr)99 10/26/22 20:03 564-132 Eurofins Savannah Page 8 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-3Client Sample ID: MW-9 Matrix: GWDate Collected: 10/17/22 13:00 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds RL MDL 22.1 J 25.0 10.0 ug/L 10/25/22 15:19 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Acetone 1.00 0.130 ug/L 10/25/22 15:19 1146Benzene 1.00 0.540 ug/L 10/25/22 15:19 1NDBromobenzene 1.00 0.210 ug/L 10/25/22 15:19 1NDBromochloromethane 1.00 0.500 ug/L 10/25/22 15:19 1NDBromodichloromethane 5.00 0.250 ug/L 10/25/22 15:19 1NDBromoform 1.00 0.980 ug/L 10/25/22 15:19 1NDBromomethane 1.00 0.190 ug/L 10/25/22 15:19 1NDCarbon tetrachloride 1.00 0.150 ug/L 10/25/22 15:19 10.248 JChlorobenzene 1.00 0.240 ug/L 10/25/22 15:19 1NDChlorodibromomethane 1.00 0.760 ug/L 10/25/22 15:19 1NDChloroethane 1.00 1.00 ug/L 10/25/22 15:19 1NDChloroform 1.00 0.320 ug/L 10/25/22 15:19 1ND*+Chloromethane 1.00 0.570 ug/L 10/25/22 15:19 1ND2-Chlorotoluene 1.00 0.560 ug/L 10/25/22 15:19 1ND4-Chlorotoluene 1.00 0.200 ug/L 10/25/22 15:19 1NDcis-1,2-Dichloroethene 5.00 0.500 ug/L 10/25/22 15:19 1NDcis-1,3-Dichloropropene 5.00 1.50 ug/L 10/25/22 15:19 1ND1,2-Dibromo-3-Chloropropane 1.00 0.230 ug/L 10/25/22 15:19 1ND1,2-Dibromoethane 5.00 0.220 ug/L 10/25/22 15:19 1NDDibromomethane 1.00 0.500 ug/L 10/25/22 15:19 1ND1,2-Dichlorobenzene 1.00 0.540 ug/L 10/25/22 15:19 1ND1,3-Dichlorobenzene 1.00 0.640 ug/L 10/25/22 15:19 1ND1,4-Dichlorobenzene 1.00 0.850 ug/L 10/25/22 15:19 1NDDichlorodifluoromethane 1.00 0.500 ug/L 10/25/22 15:19 1ND1,1-Dichloroethane 1.00 0.190 ug/L 10/25/22 15:19 1ND1,2-Dichloroethane 1.00 0.500 ug/L 10/25/22 15:19 1ND1,1-Dichloroethene 1.00 0.500 ug/L 10/25/22 15:19 1ND1,2-Dichloropropane 1.00 0.500 ug/L 10/25/22 15:19 1ND1,3-Dichloropropane 1.00 0.500 ug/L 10/25/22 15:19 1ND2,2-Dichloropropane 1.00 0.500 ug/L 10/25/22 15:19 1ND1,1-Dichloropropene 1.00 0.200 ug/L 10/25/22 15:19 140.8Di-isopropyl ether (DIPE) 100 24.0 ug/L 10/25/22 15:19 1NDEthanol 1.00 0.500 ug/L 10/25/22 15:19 113.6Ethylbenzene 5.00 0.900 ug/L 10/25/22 15:19 1ND*+Hexachlorobutadiene 25.0 1.40 ug/L 10/25/22 15:19 1ND2-Hexanone 1.00 0.530 ug/L 10/25/22 15:19 117.1Isopropylbenzene 1.00 0.710 ug/L 10/26/22 19:10 11.654-Isopropyltoluene 5.00 3.00 ug/L 10/25/22 15:19 1NDMethylene Chloride 25.0 2.60 ug/L 10/25/22 15:19 110.2 JMethyl ethyl ketone (MEK) 25.0 1.80 ug/L 10/25/22 15:19 1ND4-Methyl-2-pentanone 1.00 0.220 ug/L 10/25/22 15:19 14.11Methyl-tert-butyl Ether (MTBE) 5.00 0.630 ug/L 10/25/22 15:19 133.7m,p-Xylene 5.00 3.00 ug/L 10/25/22 15:19 13.54 JNaphthalene 1.00 0.760 ug/L 10/26/22 19:10 14.95n-Butylbenzene 1.00 0.690 ug/L 10/25/22 15:19 135.6n-Propylbenzene 5.00 0.600 ug/L 10/25/22 15:19 13.85 Jo-Xylene 1.00 0.700 ug/L 10/25/22 15:19 13.19sec-Butylbenzene 1.00 1.00 ug/L 10/25/22 15:19 1NDStyrene Eurofins Savannah Page 9 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-3Client Sample ID: MW-9 Matrix: GWDate Collected: 10/17/22 13:00 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 1.41 1.00 0.630 ug/L 10/25/22 15:19 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier tert-Butylbenzene 1.00 0.160 ug/L 10/25/22 15:19 1ND1,1,1,2-Tetrachloroethane 1.00 0.500 ug/L 10/25/22 15:19 1ND1,1,2,2-Tetrachloroethane 1.00 0.900 ug/L 10/25/22 15:19 1NDTetrachloroethene 1.00 0.410 ug/L 10/25/22 15:19 115.9Toluene 1.00 0.500 ug/L 10/25/22 15:19 1NDtrans-1,2-Dichloroethene 5.00 0.200 ug/L 10/25/22 15:19 1NDtrans-1,3-Dichloropropene 1.00 0.900 ug/L 10/25/22 15:19 1ND*+1,2,3-Trichlorobenzene 1.00 0.820 ug/L 10/25/22 15:19 1ND*+1,2,4-Trichlorobenzene 1.00 0.180 ug/L 10/25/22 15:19 1ND1,1,1-Trichloroethane 5.00 0.210 ug/L 10/25/22 15:19 1ND1,1,2-Trichloroethane 1.00 0.150 ug/L 10/25/22 15:19 1NDTrichloroethene 1.00 0.520 ug/L 10/25/22 15:19 1NDTrichlorofluoromethane 5.00 0.840 ug/L 10/25/22 15:19 1ND1,2,3-Trichloropropane 1.00 0.820 ug/L 10/25/22 15:19 16.051,2,4-Trimethylbenzene 1.00 0.560 ug/L 10/25/22 15:19 11.241,3,5-Trimethylbenzene 25.0 0.930 ug/L 10/25/22 15:19 1NDVinyl acetate 1.00 0.500 ug/L 10/25/22 15:19 1NDVinyl chloride 10.0 1.60 ug/L 10/25/22 15:19 137.6Xylene (total) 4-Bromofluorobenzene 96 72-119 10/25/22 15:19 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 4-Bromofluorobenzene 102 10/26/22 19:10 172-119 Dibromofluoromethane 92 10/25/22 15:19 175-126 Dibromofluoromethane 93 10/26/22 19:10 175-126 Toluene-d8 (Surr)103 10/25/22 15:19 164-132 Toluene-d8 (Surr)99 10/26/22 19:10 164-132 Eurofins Savannah Page 10 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-4Client Sample ID: MW-13 Matrix: GWDate Collected: 10/17/22 13:30 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds RL MDL 29.1 25.0 10.0 ug/L 10/25/22 15:45 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Acetone 1.00 0.130 ug/L 10/25/22 15:45 1104Benzene 1.00 0.540 ug/L 10/25/22 15:45 1NDBromobenzene 1.00 0.210 ug/L 10/25/22 15:45 1NDBromochloromethane 1.00 0.500 ug/L 10/25/22 15:45 1NDBromodichloromethane 5.00 0.250 ug/L 10/25/22 15:45 1NDBromoform 1.00 0.980 ug/L 10/25/22 15:45 1NDBromomethane 1.00 0.190 ug/L 10/25/22 15:45 1NDCarbon tetrachloride 1.00 0.150 ug/L 10/25/22 15:45 16.69Chlorobenzene 1.00 0.240 ug/L 10/25/22 15:45 1NDChlorodibromomethane 1.00 0.760 ug/L 10/25/22 15:45 1NDChloroethane 1.00 1.00 ug/L 10/25/22 15:45 1NDChloroform 1.00 0.320 ug/L 10/25/22 15:45 1ND*+Chloromethane 1.00 0.570 ug/L 10/25/22 15:45 1ND2-Chlorotoluene 1.00 0.560 ug/L 10/25/22 15:45 1ND4-Chlorotoluene 1.00 0.200 ug/L 10/25/22 15:45 1NDcis-1,2-Dichloroethene 5.00 0.500 ug/L 10/25/22 15:45 1NDcis-1,3-Dichloropropene 5.00 1.50 ug/L 10/25/22 15:45 1ND1,2-Dibromo-3-Chloropropane 1.00 0.230 ug/L 10/25/22 15:45 1ND1,2-Dibromoethane 5.00 0.220 ug/L 10/25/22 15:45 1NDDibromomethane 1.00 0.500 ug/L 10/25/22 15:45 1ND1,2-Dichlorobenzene 1.00 0.540 ug/L 10/25/22 15:45 1ND1,3-Dichlorobenzene 1.00 0.640 ug/L 10/25/22 15:45 12.781,4-Dichlorobenzene 1.00 0.850 ug/L 10/25/22 15:45 1NDDichlorodifluoromethane 1.00 0.500 ug/L 10/25/22 15:45 1ND1,1-Dichloroethane 1.00 0.190 ug/L 10/25/22 15:45 1ND1,2-Dichloroethane 1.00 0.500 ug/L 10/25/22 15:45 1ND1,1-Dichloroethene 1.00 0.500 ug/L 10/25/22 15:45 1ND1,2-Dichloropropane 1.00 0.500 ug/L 10/25/22 15:45 1ND1,3-Dichloropropane 1.00 0.500 ug/L 10/25/22 15:45 1ND2,2-Dichloropropane 1.00 0.500 ug/L 10/25/22 15:45 1ND1,1-Dichloropropene 1.00 0.200 ug/L 10/25/22 15:45 128.0Di-isopropyl ether (DIPE) 100 24.0 ug/L 10/25/22 15:45 1NDEthanol 1.00 0.500 ug/L 10/25/22 15:45 110.1Ethylbenzene 5.00 0.900 ug/L 10/25/22 15:45 1ND*+Hexachlorobutadiene 25.0 1.40 ug/L 10/25/22 15:45 1ND2-Hexanone 1.00 0.530 ug/L 10/25/22 15:45 139.1Isopropylbenzene 1.00 0.710 ug/L 10/25/22 15:45 1ND*+4-Isopropyltoluene 5.00 3.00 ug/L 10/25/22 15:45 1NDMethylene Chloride 25.0 2.60 ug/L 10/25/22 15:45 113.0 JMethyl ethyl ketone (MEK) 25.0 1.80 ug/L 10/25/22 15:45 1ND4-Methyl-2-pentanone 1.00 0.220 ug/L 10/25/22 15:45 11.97Methyl-tert-butyl Ether (MTBE) 5.00 0.630 ug/L 10/25/22 15:45 110.6m,p-Xylene 5.00 3.00 ug/L 10/25/22 15:45 1NDNaphthalene 1.00 0.760 ug/L 10/26/22 18:44 18.54n-Butylbenzene 1.00 0.690 ug/L 10/25/22 15:45 171.9n-Propylbenzene 5.00 0.600 ug/L 10/25/22 15:45 12.50 Jo-Xylene 1.00 0.700 ug/L 10/25/22 15:45 16.64sec-Butylbenzene 1.00 1.00 ug/L 10/25/22 15:45 1NDStyrene Eurofins Savannah Page 11 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-4Client Sample ID: MW-13 Matrix: GWDate Collected: 10/17/22 13:30 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL 3.57 1.00 0.630 ug/L 10/25/22 15:45 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier tert-Butylbenzene 1.00 0.160 ug/L 10/25/22 15:45 1ND1,1,1,2-Tetrachloroethane 1.00 0.500 ug/L 10/25/22 15:45 1ND1,1,2,2-Tetrachloroethane 1.00 0.900 ug/L 10/25/22 15:45 1NDTetrachloroethene 1.00 0.410 ug/L 10/25/22 15:45 114.8Toluene 1.00 0.500 ug/L 10/25/22 15:45 1NDtrans-1,2-Dichloroethene 5.00 0.200 ug/L 10/25/22 15:45 1NDtrans-1,3-Dichloropropene 1.00 0.900 ug/L 10/25/22 15:45 1ND*+1,2,3-Trichlorobenzene 1.00 0.820 ug/L 10/25/22 15:45 1ND*+1,2,4-Trichlorobenzene 1.00 0.180 ug/L 10/25/22 15:45 1ND1,1,1-Trichloroethane 5.00 0.210 ug/L 10/25/22 15:45 1ND1,1,2-Trichloroethane 1.00 0.150 ug/L 10/25/22 15:45 1NDTrichloroethene 1.00 0.520 ug/L 10/25/22 15:45 1NDTrichlorofluoromethane 5.00 0.840 ug/L 10/25/22 15:45 1ND1,2,3-Trichloropropane 1.00 0.820 ug/L 10/25/22 15:45 1ND1,2,4-Trimethylbenzene 1.00 0.560 ug/L 10/25/22 15:45 1ND1,3,5-Trimethylbenzene 25.0 0.930 ug/L 10/25/22 15:45 1NDVinyl acetate 1.00 0.500 ug/L 10/25/22 15:45 1NDVinyl chloride 10.0 1.60 ug/L 10/25/22 15:45 113.1Xylene (total) 4-Bromofluorobenzene 99 72-119 10/25/22 15:45 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 4-Bromofluorobenzene 99 10/26/22 18:44 172-119 Dibromofluoromethane 90 10/25/22 15:45 175-126 Dibromofluoromethane 93 10/26/22 18:44 175-126 Toluene-d8 (Surr)105 10/25/22 15:45 164-132 Toluene-d8 (Surr)97 10/26/22 18:44 164-132 Eurofins Savannah Page 12 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-5Client Sample ID: MW-14 Matrix: GWDate Collected: 10/17/22 13:50 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds RL MDL ND 25.0 10.0 ug/L 10/25/22 16:10 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Acetone 1.00 0.130 ug/L 10/25/22 16:10 10.704 JBenzene 1.00 0.540 ug/L 10/25/22 16:10 1NDBromobenzene 1.00 0.210 ug/L 10/25/22 16:10 1NDBromochloromethane 1.00 0.500 ug/L 10/25/22 16:10 1NDBromodichloromethane 5.00 0.250 ug/L 10/25/22 16:10 1NDBromoform 1.00 0.980 ug/L 10/25/22 16:10 1NDBromomethane 1.00 0.190 ug/L 10/25/22 16:10 1NDCarbon tetrachloride 1.00 0.150 ug/L 10/25/22 16:10 1NDChlorobenzene 1.00 0.240 ug/L 10/25/22 16:10 1NDChlorodibromomethane 1.00 0.760 ug/L 10/25/22 16:10 1NDChloroethane 1.00 1.00 ug/L 10/25/22 16:10 1NDChloroform 1.00 0.320 ug/L 10/25/22 16:10 1ND*+Chloromethane 1.00 0.570 ug/L 10/25/22 16:10 1ND2-Chlorotoluene 1.00 0.560 ug/L 10/25/22 16:10 1ND4-Chlorotoluene 1.00 0.200 ug/L 10/25/22 16:10 1NDcis-1,2-Dichloroethene 5.00 0.500 ug/L 10/25/22 16:10 1NDcis-1,3-Dichloropropene 5.00 1.50 ug/L 10/25/22 16:10 1ND1,2-Dibromo-3-Chloropropane 1.00 0.230 ug/L 10/25/22 16:10 1ND1,2-Dibromoethane 5.00 0.220 ug/L 10/25/22 16:10 1NDDibromomethane 1.00 0.500 ug/L 10/25/22 16:10 1ND1,2-Dichlorobenzene 1.00 0.540 ug/L 10/25/22 16:10 1ND1,3-Dichlorobenzene 1.00 0.640 ug/L 10/25/22 16:10 1ND1,4-Dichlorobenzene 1.00 0.850 ug/L 10/25/22 16:10 1NDDichlorodifluoromethane 1.00 0.500 ug/L 10/25/22 16:10 1ND1,1-Dichloroethane 1.00 0.190 ug/L 10/25/22 16:10 1ND1,2-Dichloroethane 1.00 0.500 ug/L 10/25/22 16:10 1ND1,1-Dichloroethene 1.00 0.500 ug/L 10/25/22 16:10 1ND1,2-Dichloropropane 1.00 0.500 ug/L 10/25/22 16:10 1ND1,3-Dichloropropane 1.00 0.500 ug/L 10/25/22 16:10 1ND2,2-Dichloropropane 1.00 0.500 ug/L 10/25/22 16:10 1ND1,1-Dichloropropene 1.00 0.200 ug/L 10/25/22 16:10 12.76Di-isopropyl ether (DIPE) 100 24.0 ug/L 10/25/22 16:10 1NDEthanol 1.00 0.500 ug/L 10/25/22 16:10 1NDEthylbenzene 5.00 0.900 ug/L 10/25/22 16:10 1ND*+Hexachlorobutadiene 25.0 1.40 ug/L 10/25/22 16:10 1ND2-Hexanone 1.00 0.530 ug/L 10/25/22 16:10 1NDIsopropylbenzene 1.00 0.710 ug/L 10/25/22 16:10 1ND*+4-Isopropyltoluene 5.00 3.00 ug/L 10/25/22 16:10 1NDMethylene Chloride 25.0 2.60 ug/L 10/25/22 16:10 1NDMethyl ethyl ketone (MEK) 25.0 1.80 ug/L 10/25/22 16:10 1ND4-Methyl-2-pentanone 1.00 0.220 ug/L 10/25/22 16:10 1NDMethyl-tert-butyl Ether (MTBE) 5.00 0.630 ug/L 10/25/22 16:10 1NDm,p-Xylene 5.00 3.00 ug/L 10/25/22 16:10 1NDNaphthalene 1.00 0.760 ug/L 10/25/22 16:10 1ND*+n-Butylbenzene 1.00 0.690 ug/L 10/25/22 16:10 1NDn-Propylbenzene 5.00 0.600 ug/L 10/25/22 16:10 1NDo-Xylene 1.00 0.700 ug/L 10/25/22 16:10 1NDsec-Butylbenzene 1.00 1.00 ug/L 10/25/22 16:10 1NDStyrene Eurofins Savannah Page 13 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-5Client Sample ID: MW-14 Matrix: GWDate Collected: 10/17/22 13:50 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL ND 1.00 0.630 ug/L 10/25/22 16:10 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier tert-Butylbenzene 1.00 0.160 ug/L 10/25/22 16:10 1ND1,1,1,2-Tetrachloroethane 1.00 0.500 ug/L 10/25/22 16:10 1ND1,1,2,2-Tetrachloroethane 1.00 0.900 ug/L 10/25/22 16:10 1NDTetrachloroethene 1.00 0.410 ug/L 10/25/22 16:10 1NDToluene 1.00 0.500 ug/L 10/25/22 16:10 1NDtrans-1,2-Dichloroethene 5.00 0.200 ug/L 10/25/22 16:10 1NDtrans-1,3-Dichloropropene 1.00 0.900 ug/L 10/25/22 16:10 1ND*+1,2,3-Trichlorobenzene 1.00 0.820 ug/L 10/25/22 16:10 1ND*+1,2,4-Trichlorobenzene 1.00 0.180 ug/L 10/25/22 16:10 1ND1,1,1-Trichloroethane 5.00 0.210 ug/L 10/25/22 16:10 1ND1,1,2-Trichloroethane 1.00 0.150 ug/L 10/25/22 16:10 1NDTrichloroethene 1.00 0.520 ug/L 10/25/22 16:10 1NDTrichlorofluoromethane 5.00 0.840 ug/L 10/25/22 16:10 1ND1,2,3-Trichloropropane 1.00 0.820 ug/L 10/25/22 16:10 1ND1,2,4-Trimethylbenzene 1.00 0.560 ug/L 10/25/22 16:10 1ND1,3,5-Trimethylbenzene 25.0 0.930 ug/L 10/25/22 16:10 1NDVinyl acetate 1.00 0.500 ug/L 10/25/22 16:10 1NDVinyl chloride 10.0 1.60 ug/L 10/25/22 16:10 1NDXylene (total) 4-Bromofluorobenzene 94 72-119 10/25/22 16:10 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 89 10/25/22 16:10 175-126 Toluene-d8 (Surr)104 10/25/22 16:10 164-132 Eurofins Savannah Page 14 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-6Client Sample ID: MW-10 Matrix: GWDate Collected: 10/17/22 11:15 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds RL MDL 361 250 100 ug/L 10/24/22 14:15 10 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Acetone 10.0 1.30 ug/L 10/24/22 14:15 101000Benzene 10.0 5.40 ug/L 10/24/22 14:15 10NDBromobenzene 10.0 2.10 ug/L 10/24/22 14:15 10NDBromochloromethane 10.0 5.00 ug/L 10/24/22 14:15 10NDBromodichloromethane 50.0 2.50 ug/L 10/24/22 14:15 10NDBromoform 10.0 9.80 ug/L 10/24/22 14:15 10NDBromomethane 10.0 1.90 ug/L 10/24/22 14:15 10NDCarbon tetrachloride 10.0 1.50 ug/L 10/24/22 14:15 10NDChlorobenzene 10.0 2.40 ug/L 10/24/22 14:15 10NDChlorodibromomethane 10.0 7.60 ug/L 10/24/22 14:15 10NDChloroethane 10.0 10.0 ug/L 10/24/22 14:15 10NDChloroform 10.0 3.20 ug/L 10/24/22 14:15 10NDChloromethane 10.0 5.70 ug/L 10/24/22 14:15 10ND2-Chlorotoluene 10.0 5.60 ug/L 10/24/22 14:15 10ND4-Chlorotoluene 10.0 2.00 ug/L 10/24/22 14:15 10NDcis-1,2-Dichloroethene 50.0 5.00 ug/L 10/24/22 14:15 10NDcis-1,3-Dichloropropene 50.0 15.0 ug/L 10/24/22 14:15 10ND1,2-Dibromo-3-Chloropropane 10.0 2.30 ug/L 10/24/22 14:15 10ND1,2-Dibromoethane 50.0 2.20 ug/L 10/24/22 14:15 10NDDibromomethane 10.0 5.00 ug/L 10/24/22 14:15 10ND1,2-Dichlorobenzene 10.0 5.40 ug/L 10/24/22 14:15 10ND1,3-Dichlorobenzene 10.0 6.40 ug/L 10/24/22 14:15 10ND1,4-Dichlorobenzene 10.0 8.50 ug/L 10/24/22 14:15 10NDDichlorodifluoromethane 10.0 5.00 ug/L 10/24/22 14:15 10ND1,1-Dichloroethane 10.0 1.90 ug/L 10/24/22 14:15 10ND1,2-Dichloroethane 10.0 5.00 ug/L 10/24/22 14:15 10ND1,1-Dichloroethene 10.0 5.00 ug/L 10/24/22 14:15 10ND1,2-Dichloropropane 10.0 5.00 ug/L 10/24/22 14:15 10ND1,3-Dichloropropane 10.0 5.00 ug/L 10/24/22 14:15 10ND2,2-Dichloropropane 10.0 5.00 ug/L 10/24/22 14:15 10ND1,1-Dichloropropene 10.0 2.00 ug/L 10/24/22 14:15 10NDDi-isopropyl ether (DIPE) 1000 240 ug/L 10/24/22 14:15 10NDEthanol 10.0 5.00 ug/L 10/24/22 14:15 10842Ethylbenzene 50.0 9.00 ug/L 10/24/22 14:15 10NDHexachlorobutadiene 250 14.0 ug/L 10/24/22 14:15 10ND2-Hexanone 10.0 5.30 ug/L 10/24/22 14:15 1061.9Isopropylbenzene 10.0 7.10 ug/L 10/24/22 14:15 10ND4-Isopropyltoluene 50.0 30.0 ug/L 10/24/22 14:15 10NDMethylene Chloride 250 26.0 ug/L 10/24/22 14:15 10NDMethyl ethyl ketone (MEK) 250 18.0 ug/L 10/24/22 14:15 10ND4-Methyl-2-pentanone 10.0 2.20 ug/L 10/24/22 14:15 10NDMethyl-tert-butyl Ether (MTBE) 50.0 6.30 ug/L 10/24/22 14:15 10530m,p-Xylene 50.0 30.0 ug/L 10/24/22 14:15 10NDNaphthalene 10.0 7.60 ug/L 10/24/22 14:15 1024.5n-Butylbenzene 10.0 6.90 ug/L 10/24/22 14:15 10182n-Propylbenzene 50.0 6.00 ug/L 10/24/22 14:15 1063.6o-Xylene 10.0 7.00 ug/L 10/24/22 14:15 1010.5sec-Butylbenzene 10.0 10.0 ug/L 10/24/22 14:15 10NDStyrene Eurofins Savannah Page 15 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-6Client Sample ID: MW-10 Matrix: GWDate Collected: 10/17/22 11:15 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL ND 10.0 6.30 ug/L 10/24/22 14:15 10 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier tert-Butylbenzene 10.0 1.60 ug/L 10/24/22 14:15 10ND1,1,1,2-Tetrachloroethane 10.0 5.00 ug/L 10/24/22 14:15 10ND1,1,2,2-Tetrachloroethane 10.0 9.00 ug/L 10/24/22 14:15 10NDTetrachloroethene 10.0 4.10 ug/L 10/24/22 14:15 10176Toluene 10.0 5.00 ug/L 10/24/22 14:15 10NDtrans-1,2-Dichloroethene 50.0 2.00 ug/L 10/24/22 14:15 10NDtrans-1,3-Dichloropropene 10.0 9.00 ug/L 10/24/22 14:15 10ND1,2,3-Trichlorobenzene 10.0 8.20 ug/L 10/24/22 14:15 10ND1,2,4-Trichlorobenzene 10.0 1.80 ug/L 10/24/22 14:15 10ND1,1,1-Trichloroethane 50.0 2.10 ug/L 10/24/22 14:15 10ND1,1,2-Trichloroethane 10.0 1.50 ug/L 10/24/22 14:15 10NDTrichloroethene 10.0 5.20 ug/L 10/24/22 14:15 10NDTrichlorofluoromethane 50.0 8.40 ug/L 10/24/22 14:15 10ND1,2,3-Trichloropropane 10.0 8.20 ug/L 10/24/22 14:15 101061,2,4-Trimethylbenzene 10.0 5.60 ug/L 10/24/22 14:15 1036.71,3,5-Trimethylbenzene 250 9.30 ug/L 10/24/22 14:15 10NDVinyl acetate 10.0 5.00 ug/L 10/24/22 14:15 10NDVinyl chloride 100 16.0 ug/L 10/24/22 14:15 10593Xylene (total) 4-Bromofluorobenzene 97 72-119 10/24/22 14:15 10 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 99 10/24/22 14:15 1075-126 Toluene-d8 (Surr)87 10/24/22 14:15 1064-132 Eurofins Savannah Page 16 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-7Client Sample ID: MW-11 Matrix: GWDate Collected: 10/17/22 11:30 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds RL MDL ND 5000 2000 ug/L 10/24/22 14:39 200 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Acetone 200 26.0 ug/L 10/24/22 14:39 2001090Benzene 200 108 ug/L 10/24/22 14:39 200NDBromobenzene 200 42.0 ug/L 10/24/22 14:39 200NDBromochloromethane 200 100 ug/L 10/24/22 14:39 200NDBromodichloromethane 1000 50.0 ug/L 10/24/22 14:39 200NDBromoform 200 196 ug/L 10/24/22 14:39 200NDBromomethane 200 38.0 ug/L 10/24/22 14:39 200NDCarbon tetrachloride 200 30.0 ug/L 10/24/22 14:39 200NDChlorobenzene 200 48.0 ug/L 10/24/22 14:39 200NDChlorodibromomethane 200 152 ug/L 10/24/22 14:39 200NDChloroethane 200 200 ug/L 10/24/22 14:39 200NDChloroform 200 64.0 ug/L 10/24/22 14:39 200NDChloromethane 200 114 ug/L 10/24/22 14:39 200ND2-Chlorotoluene 200 112 ug/L 10/24/22 14:39 200ND4-Chlorotoluene 200 40.0 ug/L 10/24/22 14:39 200NDcis-1,2-Dichloroethene 1000 100 ug/L 10/24/22 14:39 200NDcis-1,3-Dichloropropene 1000 300 ug/L 10/24/22 14:39 200ND1,2-Dibromo-3-Chloropropane 200 46.0 ug/L 10/24/22 14:39 200ND1,2-Dibromoethane 1000 44.0 ug/L 10/24/22 14:39 200NDDibromomethane 200 100 ug/L 10/24/22 14:39 200ND1,2-Dichlorobenzene 200 108 ug/L 10/24/22 14:39 200ND1,3-Dichlorobenzene 200 128 ug/L 10/24/22 14:39 200ND1,4-Dichlorobenzene 200 170 ug/L 10/24/22 14:39 200NDDichlorodifluoromethane 200 100 ug/L 10/24/22 14:39 200ND1,1-Dichloroethane 200 38.0 ug/L 10/24/22 14:39 200ND1,2-Dichloroethane 200 100 ug/L 10/24/22 14:39 200ND1,1-Dichloroethene 200 100 ug/L 10/24/22 14:39 200ND1,2-Dichloropropane 200 100 ug/L 10/24/22 14:39 200ND1,3-Dichloropropane 200 100 ug/L 10/24/22 14:39 200ND2,2-Dichloropropane 200 100 ug/L 10/24/22 14:39 200ND1,1-Dichloropropene 200 40.0 ug/L 10/24/22 14:39 200NDDi-isopropyl ether (DIPE) 20000 4800 ug/L 10/24/22 14:39 200NDEthanol 200 100 ug/L 10/24/22 14:39 20012000Ethylbenzene 1000 180 ug/L 10/24/22 14:39 200NDHexachlorobutadiene 5000 280 ug/L 10/24/22 14:39 200ND2-Hexanone 200 106 ug/L 10/24/22 14:39 200681Isopropylbenzene 200 142 ug/L 10/24/22 14:39 200ND4-Isopropyltoluene 1000 600 ug/L 10/24/22 14:39 200NDMethylene Chloride 5000 520 ug/L 10/24/22 14:39 200NDMethyl ethyl ketone (MEK) 5000 360 ug/L 10/24/22 14:39 200ND4-Methyl-2-pentanone 200 44.0 ug/L 10/24/22 14:39 200NDMethyl-tert-butyl Ether (MTBE) 1000 126 ug/L 10/24/22 14:39 20040800m,p-Xylene 1000 600 ug/L 10/24/22 14:39 2002130Naphthalene 200 152 ug/L 10/24/22 14:39 200568n-Butylbenzene 200 138 ug/L 10/24/22 14:39 2002260n-Propylbenzene 1000 120 ug/L 10/24/22 14:39 20012500o-Xylene 200 140 ug/L 10/24/22 14:39 200143Jsec-Butylbenzene 200 200 ug/L 10/24/22 14:39 200NDStyrene Eurofins Savannah Page 17 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-7Client Sample ID: MW-11 Matrix: GWDate Collected: 10/17/22 11:30 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL ND 200 126 ug/L 10/24/22 14:39 200 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier tert-Butylbenzene 200 32.0 ug/L 10/24/22 14:39 200ND1,1,1,2-Tetrachloroethane 200 100 ug/L 10/24/22 14:39 200ND1,1,2,2-Tetrachloroethane 200 180 ug/L 10/24/22 14:39 200NDTetrachloroethene 200 82.0 ug/L 10/24/22 14:39 200959Toluene 200 100 ug/L 10/24/22 14:39 200NDtrans-1,2-Dichloroethene 1000 40.0 ug/L 10/24/22 14:39 200NDtrans-1,3-Dichloropropene 200 180 ug/L 10/24/22 14:39 200ND1,2,3-Trichlorobenzene 200 164 ug/L 10/24/22 14:39 200ND1,2,4-Trichlorobenzene 200 36.0 ug/L 10/24/22 14:39 200ND1,1,1-Trichloroethane 1000 42.0 ug/L 10/24/22 14:39 200ND1,1,2-Trichloroethane 200 30.0 ug/L 10/24/22 14:39 200NDTrichloroethene 200 104 ug/L 10/24/22 14:39 200NDTrichlorofluoromethane 1000 168 ug/L 10/24/22 14:39 200ND1,2,3-Trichloropropane 200 164 ug/L 10/24/22 14:39 200145001,2,4-Trimethylbenzene 200 112 ug/L 10/24/22 14:39 20042601,3,5-Trimethylbenzene 5000 186 ug/L 10/24/22 14:39 200NDVinyl acetate 200 100 ug/L 10/24/22 14:39 200NDVinyl chloride 2000 320 ug/L 10/24/22 14:39 20053300Xylene (total) 4-Bromofluorobenzene 99 72-119 10/24/22 14:39 200 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 97 10/24/22 14:39 20075-126 Toluene-d8 (Surr)89 10/24/22 14:39 20064-132 Eurofins Savannah Page 18 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-8Client Sample ID: Field Blank Matrix: WaterDate Collected: 10/17/22 14:45 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds RL MDL ND 25.0 10.0 ug/L 10/24/22 13:05 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Acetone 1.00 0.130 ug/L 10/24/22 13:05 1NDBenzene 1.00 0.540 ug/L 10/24/22 13:05 1NDBromobenzene 1.00 0.210 ug/L 10/24/22 13:05 1NDBromochloromethane 1.00 0.500 ug/L 10/24/22 13:05 1NDBromodichloromethane 5.00 0.250 ug/L 10/24/22 13:05 1NDBromoform 1.00 0.980 ug/L 10/24/22 13:05 1NDBromomethane 1.00 0.190 ug/L 10/24/22 13:05 1NDCarbon tetrachloride 1.00 0.150 ug/L 10/24/22 13:05 1NDChlorobenzene 1.00 0.240 ug/L 10/24/22 13:05 1NDChlorodibromomethane 1.00 0.760 ug/L 10/24/22 13:05 1NDChloroethane 1.00 1.00 ug/L 10/24/22 13:05 1NDChloroform 1.00 0.320 ug/L 10/24/22 13:05 1NDChloromethane 1.00 0.570 ug/L 10/24/22 13:05 1ND2-Chlorotoluene 1.00 0.560 ug/L 10/24/22 13:05 1ND4-Chlorotoluene 1.00 0.200 ug/L 10/24/22 13:05 1NDcis-1,2-Dichloroethene 5.00 0.500 ug/L 10/24/22 13:05 1NDcis-1,3-Dichloropropene 5.00 1.50 ug/L 10/24/22 13:05 1ND1,2-Dibromo-3-Chloropropane 1.00 0.230 ug/L 10/24/22 13:05 1ND1,2-Dibromoethane 5.00 0.220 ug/L 10/24/22 13:05 1NDDibromomethane 1.00 0.500 ug/L 10/24/22 13:05 1ND1,2-Dichlorobenzene 1.00 0.540 ug/L 10/24/22 13:05 1ND1,3-Dichlorobenzene 1.00 0.640 ug/L 10/24/22 13:05 1ND1,4-Dichlorobenzene 1.00 0.850 ug/L 10/24/22 13:05 1NDDichlorodifluoromethane 1.00 0.500 ug/L 10/24/22 13:05 1ND1,1-Dichloroethane 1.00 0.190 ug/L 10/24/22 13:05 1ND1,2-Dichloroethane 1.00 0.500 ug/L 10/24/22 13:05 1ND1,1-Dichloroethene 1.00 0.500 ug/L 10/24/22 13:05 1ND1,2-Dichloropropane 1.00 0.500 ug/L 10/24/22 13:05 1ND1,3-Dichloropropane 1.00 0.500 ug/L 10/24/22 13:05 1ND2,2-Dichloropropane 1.00 0.500 ug/L 10/24/22 13:05 1ND1,1-Dichloropropene 1.00 0.200 ug/L 10/24/22 13:05 1NDDi-isopropyl ether (DIPE) 100 24.0 ug/L 10/24/22 13:05 1NDEthanol 1.00 0.500 ug/L 10/24/22 13:05 1NDEthylbenzene 5.00 0.900 ug/L 10/24/22 13:05 1NDHexachlorobutadiene 25.0 1.40 ug/L 10/24/22 13:05 1ND2-Hexanone 1.00 0.530 ug/L 10/24/22 13:05 1NDIsopropylbenzene 1.00 0.710 ug/L 10/24/22 13:05 1ND4-Isopropyltoluene 5.00 3.00 ug/L 10/24/22 13:05 1NDMethylene Chloride 25.0 2.60 ug/L 10/24/22 13:05 1NDMethyl ethyl ketone (MEK) 25.0 1.80 ug/L 10/24/22 13:05 1ND4-Methyl-2-pentanone 1.00 0.220 ug/L 10/24/22 13:05 1NDMethyl-tert-butyl Ether (MTBE) 5.00 0.630 ug/L 10/24/22 13:05 1NDm,p-Xylene 5.00 3.00 ug/L 10/24/22 13:05 1NDNaphthalene 1.00 0.760 ug/L 10/24/22 13:05 1NDn-Butylbenzene 1.00 0.690 ug/L 10/24/22 13:05 1NDn-Propylbenzene 5.00 0.600 ug/L 10/24/22 13:05 1NDo-Xylene 1.00 0.700 ug/L 10/24/22 13:05 1NDsec-Butylbenzene 1.00 1.00 ug/L 10/24/22 13:05 1NDStyrene Eurofins Savannah Page 19 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Client Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Lab Sample ID: 680-223491-8Client Sample ID: Field Blank Matrix: WaterDate Collected: 10/17/22 14:45 Date Received: 10/19/22 08:00 Method: SM6200-B - Volatile Organic Compounds (Continued) RL MDL ND 1.00 0.630 ug/L 10/24/22 13:05 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier tert-Butylbenzene 1.00 0.160 ug/L 10/24/22 13:05 1ND1,1,1,2-Tetrachloroethane 1.00 0.500 ug/L 10/24/22 13:05 1ND1,1,2,2-Tetrachloroethane 1.00 0.900 ug/L 10/24/22 13:05 1NDTetrachloroethene 1.00 0.410 ug/L 10/24/22 13:05 1NDToluene 1.00 0.500 ug/L 10/24/22 13:05 1NDtrans-1,2-Dichloroethene 5.00 0.200 ug/L 10/24/22 13:05 1NDtrans-1,3-Dichloropropene 1.00 0.900 ug/L 10/24/22 13:05 1ND1,2,3-Trichlorobenzene 1.00 0.820 ug/L 10/24/22 13:05 1ND1,2,4-Trichlorobenzene 1.00 0.180 ug/L 10/24/22 13:05 1ND1,1,1-Trichloroethane 5.00 0.210 ug/L 10/24/22 13:05 1ND1,1,2-Trichloroethane 1.00 0.150 ug/L 10/24/22 13:05 1NDTrichloroethene 1.00 0.520 ug/L 10/24/22 13:05 1NDTrichlorofluoromethane 5.00 0.840 ug/L 10/24/22 13:05 1ND1,2,3-Trichloropropane 1.00 0.820 ug/L 10/24/22 13:05 1ND1,2,4-Trimethylbenzene 1.00 0.560 ug/L 10/24/22 13:05 1ND1,3,5-Trimethylbenzene 25.0 0.930 ug/L 10/24/22 13:05 1NDVinyl acetate 1.00 0.500 ug/L 10/24/22 13:05 1NDVinyl chloride 10.0 1.60 ug/L 10/24/22 13:05 1NDXylene (total) 4-Bromofluorobenzene 99 72-119 10/24/22 13:05 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane 99 10/24/22 13:05 175-126 Toluene-d8 (Surr)84 10/24/22 13:05 164-132 Eurofins Savannah Page 20 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds Client Sample ID: Method BlankLab Sample ID: MB 400-597471/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 RL MDL Acetone ND 25.0 10.0 ug/L 10/24/22 12:40 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.1301.00 ug/L 10/24/22 12:40 1Benzene ND 0.5401.00 ug/L 10/24/22 12:40 1Bromobenzene ND 0.2101.00 ug/L 10/24/22 12:40 1Bromochloromethane ND 0.5001.00 ug/L 10/24/22 12:40 1Bromodichloromethane ND 0.2505.00 ug/L 10/24/22 12:40 1Bromoform ND 0.9801.00 ug/L 10/24/22 12:40 1Bromomethane ND 0.1901.00 ug/L 10/24/22 12:40 1Carbon tetrachloride ND 0.1501.00 ug/L 10/24/22 12:40 1Chlorobenzene ND 0.2401.00 ug/L 10/24/22 12:40 1Chlorodibromomethane ND 0.7601.00 ug/L 10/24/22 12:40 1Chloroethane ND 1.001.00 ug/L 10/24/22 12:40 1Chloroform ND 0.3201.00 ug/L 10/24/22 12:40 1Chloromethane ND 0.5701.00 ug/L 10/24/22 12:40 12-Chlorotoluene ND 0.5601.00 ug/L 10/24/22 12:40 14-Chlorotoluene ND 0.2001.00 ug/L 10/24/22 12:40 1cis-1,2-Dichloroethene ND 0.5005.00 ug/L 10/24/22 12:40 1cis-1,3-Dichloropropene ND 1.505.00 ug/L 10/24/22 12:40 11,2-Dibromo-3-Chloropropane ND 0.2301.00 ug/L 10/24/22 12:40 11,2-Dibromoethane ND 0.2205.00 ug/L 10/24/22 12:40 1Dibromomethane ND 0.5001.00 ug/L 10/24/22 12:40 11,2-Dichlorobenzene ND 0.5401.00 ug/L 10/24/22 12:40 11,3-Dichlorobenzene ND 0.6401.00 ug/L 10/24/22 12:40 11,4-Dichlorobenzene ND 0.8501.00 ug/L 10/24/22 12:40 1Dichlorodifluoromethane ND 0.5001.00 ug/L 10/24/22 12:40 11,1-Dichloroethane ND 0.1901.00 ug/L 10/24/22 12:40 11,2-Dichloroethane ND 0.5001.00 ug/L 10/24/22 12:40 11,1-Dichloroethene ND 0.5001.00 ug/L 10/24/22 12:40 11,2-Dichloropropane ND 0.5001.00 ug/L 10/24/22 12:40 11,3-Dichloropropane ND 0.5001.00 ug/L 10/24/22 12:40 12,2-Dichloropropane ND 0.5001.00 ug/L 10/24/22 12:40 11,1-Dichloropropene ND 0.2001.00 ug/L 10/24/22 12:40 1Di-isopropyl ether (DIPE) ND 24.0100 ug/L 10/24/22 12:40 1Ethanol ND 0.5001.00 ug/L 10/24/22 12:40 1Ethylbenzene ND 0.9005.00 ug/L 10/24/22 12:40 1Hexachlorobutadiene ND 1.4025.0 ug/L 10/24/22 12:40 12-Hexanone ND 0.5301.00 ug/L 10/24/22 12:40 1Isopropylbenzene ND 0.7101.00 ug/L 10/24/22 12:40 14-Isopropyltoluene ND 3.005.00 ug/L 10/24/22 12:40 1Methylene Chloride ND 2.6025.0 ug/L 10/24/22 12:40 1Methyl ethyl ketone (MEK) ND 1.8025.0 ug/L 10/24/22 12:40 14-Methyl-2-pentanone ND 0.2201.00 ug/L 10/24/22 12:40 1Methyl-tert-butyl Ether (MTBE) ND 0.6305.00 ug/L 10/24/22 12:40 1m,p-Xylene ND 3.005.00 ug/L 10/24/22 12:40 1Naphthalene ND 0.7601.00 ug/L 10/24/22 12:40 1n-Butylbenzene ND 0.6901.00 ug/L 10/24/22 12:40 1n-Propylbenzene ND 0.6005.00 ug/L 10/24/22 12:40 1o-Xylene ND 0.7001.00 ug/L 10/24/22 12:40 1sec-Butylbenzene Eurofins Savannah Page 21 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-597471/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 RL MDL Styrene ND 1.00 1.00 ug/L 10/24/22 12:40 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.6301.00 ug/L 10/24/22 12:40 1tert-Butylbenzene ND 0.1601.00 ug/L 10/24/22 12:40 11,1,1,2-Tetrachloroethane ND 0.5001.00 ug/L 10/24/22 12:40 11,1,2,2-Tetrachloroethane ND 0.9001.00 ug/L 10/24/22 12:40 1Tetrachloroethene ND 0.4101.00 ug/L 10/24/22 12:40 1Toluene ND 0.5001.00 ug/L 10/24/22 12:40 1trans-1,2-Dichloroethene ND 0.2005.00 ug/L 10/24/22 12:40 1trans-1,3-Dichloropropene ND 0.9001.00 ug/L 10/24/22 12:40 11,2,3-Trichlorobenzene ND 0.8201.00 ug/L 10/24/22 12:40 11,2,4-Trichlorobenzene ND 0.1801.00 ug/L 10/24/22 12:40 11,1,1-Trichloroethane ND 0.2105.00 ug/L 10/24/22 12:40 11,1,2-Trichloroethane ND 0.1501.00 ug/L 10/24/22 12:40 1Trichloroethene ND 0.5201.00 ug/L 10/24/22 12:40 1Trichlorofluoromethane ND 0.8405.00 ug/L 10/24/22 12:40 11,2,3-Trichloropropane ND 0.8201.00 ug/L 10/24/22 12:40 11,2,4-Trimethylbenzene ND 0.5601.00 ug/L 10/24/22 12:40 11,3,5-Trimethylbenzene ND 0.93025.0 ug/L 10/24/22 12:40 1Vinyl acetate ND 0.5001.00 ug/L 10/24/22 12:40 1Vinyl chloride ND 1.6010.0 ug/L 10/24/22 12:40 1Xylene (total) 4-Bromofluorobenzene 98 72-119 10/24/22 12:40 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 99 10/24/22 12:40 1Dibromofluoromethane75-126 83 10/24/22 12:40 1Toluene-d8 (Surr)64-132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-597471/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 Acetone 200 290.4 ug/L 145 43-160 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Benzene 50.0 56.47 ug/L 113 70-130 Bromobenzene 50.0 37.42 ug/L 75 70-132 Bromochloromethane 50.0 58.30 ug/L 117 70-130 Bromodichloromethane 50.0 54.42 ug/L 109 67-133 Bromoform 50.0 35.48 ug/L 71 57-140 Bromomethane 50.0 42.77 ug/L 86 10-160 Carbon tetrachloride 50.0 53.53 ug/L 107 61-137 Chlorobenzene 50.0 41.36 ug/L 83 70-130 Chlorodibromomethane 50.0 40.09 ug/L 80 67-135 Chloroethane 50.0 40.85 ug/L 82 55-141 Chloroform 50.0 52.07 ug/L 104 69-130 Chloromethane 50.0 50.23 ug/L 100 58-137 2-Chlorotoluene 50.0 37.35 ug/L 75 70-130 4-Chlorotoluene 50.0 37.78 ug/L 76 70-130 cis-1,2-Dichloroethene 50.0 58.04 ug/L 116 68-130 cis-1,3-Dichloropropene 50.0 58.57 ug/L 117 69-132 Eurofins Savannah Page 22 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-597471/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 1,2-Dibromo-3-Chloropropane 50.0 39.27 ug/L 79 54-135 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 1,2-Dibromoethane 50.0 40.90 ug/L 82 70-130 Dibromomethane 50.0 55.02 ug/L 110 70-130 1,2-Dichlorobenzene 50.0 37.63 ug/L 75 67-130 1,3-Dichlorobenzene 50.0 38.68 ug/L 77 70-130 1,4-Dichlorobenzene 50.0 38.65 ug/L 77 70-130 Dichlorodifluoromethane 50.0 30.77 ug/L 62 41-146 1,1-Dichloroethane 50.0 58.61 ug/L 117 70-130 1,2-Dichloroethane 50.0 54.89 ug/L 110 69-130 1,1-Dichloroethene 50.0 53.99 ug/L 108 63-134 1,2-Dichloropropane 50.0 60.20 ug/L 120 70-130 1,3-Dichloropropane 50.0 40.96 ug/L 82 70-130 2,2-Dichloropropane 50.0 57.60 ug/L 115 52-135 1,1-Dichloropropene 50.0 54.43 ug/L 109 70-130 Di-isopropyl ether (DIPE)50.0 62.88 ug/L 126 64-132 Ethanol 2000 2334 ug/L 117 20-160 Ethylbenzene 50.0 41.29 ug/L 83 70-130 Hexachlorobutadiene 50.0 42.82 ug/L 86 53-140 2-Hexanone 200 184.7 ug/L 92 65-137 Isopropylbenzene 50.0 41.88 ug/L 84 70-130 4-Isopropyltoluene 50.0 40.17 ug/L 80 65-130 Methylene Chloride 50.0 56.75 ug/L 113 66-135 Methyl ethyl ketone (MEK)200 274.8 ug/L 137 61-145 4-Methyl-2-pentanone 200 257.3 ug/L 129 69-138 Methyl-tert-butyl Ether (MTBE)50.0 57.37 ug/L 115 66-130 m,p-Xylene 50.0 40.89 ug/L 82 70-130 Naphthalene 50.0 46.37 ug/L 93 47-149 n-Butylbenzene 50.0 40.80 ug/L 82 67-130 n-Propylbenzene 50.0 39.23 ug/L 78 70-130 o-Xylene 50.0 41.28 ug/L 83 70-130 sec-Butylbenzene 50.0 38.96 ug/L 78 66-130 Styrene 50.0 42.30 ug/L 85 70-130 tert-Butylbenzene 50.0 43.20 ug/L 86 64-139 1,1,1,2-Tetrachloroethane 50.0 40.06 ug/L 80 67-131 1,1,2,2-Tetrachloroethane 50.0 38.51 ug/L 77 70-131 Tetrachloroethene 50.0 40.14 ug/L 80 65-130 Toluene 50.0 40.50 ug/L 81 70-130 trans-1,2-Dichloroethene 50.0 54.09 ug/L 108 70-130 trans-1,3-Dichloropropene 50.0 40.61 ug/L 81 63-130 1,2,3-Trichlorobenzene 50.0 43.23 ug/L 86 60-138 1,2,4-Trichlorobenzene 50.0 41.64 ug/L 83 60-140 1,1,1-Trichloroethane 50.0 53.28 ug/L 107 68-130 1,1,2-Trichloroethane 50.0 40.92 ug/L 82 70-130 Trichloroethene 50.0 56.29 ug/L 113 70-130 Trichlorofluoromethane 50.0 45.95 ug/L 92 65-138 1,2,3-Trichloropropane 50.0 37.44 ug/L 75 70-130 1,2,4-Trimethylbenzene 50.0 38.50 ug/L 77 70-130 1,3,5-Trimethylbenzene 50.0 38.62 ug/L 77 69-130 Vinyl acetate 100 107.6 ug/L 108 26-160 Eurofins Savannah Page 23 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-597471/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 Vinyl chloride 50.0 42.89 ug/L 86 59-136 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Xylene (total)100 82.17 ug/L 82 70-130 4-Bromofluorobenzene 72 -119 Surrogate 95 LCS LCS Qualifier Limits%Recovery 101Dibromofluoromethane 75 -126 82Toluene-d8 (Surr)64 -132 Client Sample ID: Matrix SpikeLab Sample ID: 400-227674-A-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 Acetone ND 200 168.9 ug/L 84 43-150 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 50.0 44.05 ug/L 88 56-142 Bromobenzene ND 50.0 33.46 ug/L 67 59-136 Bromochloromethane ND 50.0 46.67 ug/L 93 64-140 Bromodichloromethane ND 50.0 42.85 ug/L 86 59-143 Bromoform ND 50.0 34.06 ug/L 68 50-140 Bromomethane ND 50.0 35.83 ug/L 72 10-150 Carbon tetrachloride ND 50.0 40.82 ug/L 82 55-145 Chlorobenzene ND 50.0 35.69 ug/L 71 64-130 Chlorodibromomethane ND 50.0 36.56 ug/L 73 56-143 Chloroethane ND 50.0 40.21 ug/L 80 50-150 Chloroform ND 50.0 40.91 ug/L 82 60-141 Chloromethane ND 50.0 47.02 ug/L 94 49-148 2-Chlorotoluene ND 50.0 33.22 ug/L 66 53-134 4-Chlorotoluene ND 50.0 31.90 ug/L 64 54-133 cis-1,2-Dichloroethene ND 50.0 45.54 ug/L 91 59-143 cis-1,3-Dichloropropene ND 50.0 45.19 ug/L 90 57-140 1,2-Dibromo-3-Chloropropane ND 50.0 34.36 ug/L 69 45-135 1,2-Dibromoethane ND 50.0 36.96 ug/L 74 64-132 Dibromomethane ND 50.0 43.28 ug/L 87 63-138 1,2-Dichlorobenzene ND 50.0 32.72 ug/L 65 52-137 1,3-Dichlorobenzene ND 50.0 32.57 ug/L 65 54-135 1,4-Dichlorobenzene ND 50.0 31.94 ug/L 64 53-135 Dichlorodifluoromethane ND 50.0 29.27 ug/L 59 16-150 1,1-Dichloroethane ND 50.0 46.23 ug/L 92 61-144 1,2-Dichloroethane ND 50.0 42.61 ug/L 85 60-141 1,1-Dichloroethene ND 50.0 41.77 ug/L 84 54-147 1,2-Dichloropropane ND 50.0 47.93 ug/L 96 66-137 1,3-Dichloropropane ND 50.0 37.34 ug/L 75 66-133 2,2-Dichloropropane ND 50.0 45.20 ug/L 90 42-144 1,1-Dichloropropene ND 50.0 42.28 ug/L 85 65-136 Di-isopropyl ether (DIPE)ND 50.0 60.07 ug/L 120 60-144 Ethanol ND F2 F1 2000 2656 ug/L 133 10-150 Ethylbenzene ND 50.0 35.47 ug/L 71 58-131 Hexachlorobutadiene ND F2 50.0 30.26 ug/L 61 31-149 Eurofins Savannah Page 24 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 400-227674-A-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 2-Hexanone ND 200 152.5 ug/L 76 65-140 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Isopropylbenzene ND 50.0 34.60 ug/L 69 56-133 4-Isopropyltoluene ND 50.0 32.08 ug/L 64 48-139 Methylene Chloride ND 50.0 44.75 ug/L 90 60-146 Methyl ethyl ketone (MEK)ND 200 181.3 ug/L 91 55-150 4-Methyl-2-pentanone ND 200 190.1 ug/L 95 63-146 Methyl-tert-butyl Ether (MTBE)ND 50.0 44.88 ug/L 90 59-137 m,p-Xylene ND 50.0 35.47 ug/L 71 57-130 Naphthalene ND 50.0 36.92 ug/L 74 25-150 n-Butylbenzene ND 50.0 32.50 ug/L 65 41-142 n-Propylbenzene ND 50.0 32.97 ug/L 66 51-138 o-Xylene ND 50.0 35.26 ug/L 71 61-130 sec-Butylbenzene ND 50.0 32.51 ug/L 65 50-138 Styrene ND 50.0 35.27 ug/L 71 58-131 tert-Butylbenzene ND F2 50.0 30.44 ug/L 61 54-146 1,1,1,2-Tetrachloroethane ND 50.0 36.33 ug/L 73 59-137 1,1,2,2-Tetrachloroethane ND 50.0 35.88 ug/L 72 66-135 Tetrachloroethene ND 50.0 33.98 ug/L 68 52-133 Toluene ND 50.0 36.52 ug/L 73 65-130 trans-1,2-Dichloroethene ND 50.0 42.56 ug/L 85 61-143 trans-1,3-Dichloropropene ND 50.0 36.64 ug/L 73 53-133 1,2,3-Trichlorobenzene ND 50.0 34.86 ug/L 70 43-145 1,2,4-Trichlorobenzene ND 50.0 32.80 ug/L 66 39-148 1,1,1-Trichloroethane ND 50.0 41.39 ug/L 83 57-142 1,1,2-Trichloroethane ND 50.0 37.54 ug/L 75 66-131 Trichloroethene 2.49 50.0 45.51 ug/L 86 64-136 Trichlorofluoromethane ND 50.0 44.59 ug/L 89 54-150 1,2,3-Trichloropropane ND 50.0 34.39 ug/L 69 65-133 1,2,4-Trimethylbenzene ND 50.0 33.24 ug/L 66 50-139 1,3,5-Trimethylbenzene ND 50.0 32.71 ug/L 65 52-135 Vinyl acetate ND 100 97.54 ug/L 98 26-150 Vinyl chloride ND 50.0 39.42 ug/L 79 46-150 Xylene (total)ND 100 70.74 ug/L 71 59-130 4-Bromofluorobenzene 72 -119 Surrogate 97 MS MS Qualifier Limits%Recovery 95Dibromofluoromethane 75 -126 90Toluene-d8 (Surr)64 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 400-227674-A-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 Acetone ND 200 174.7 ug/L 87 43-150 3 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 50.0 47.21 ug/L 94 56-142 7 30 Bromobenzene ND 50.0 40.22 ug/L 80 59-136 18 30 Bromochloromethane ND 50.0 48.59 ug/L 97 64-140 4 30 Eurofins Savannah Page 25 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 400-227674-A-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 Bromodichloromethane ND 50.0 45.69 ug/L 91 59-143 6 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Bromoform ND 50.0 37.62 ug/L 75 50-140 10 30 Bromomethane ND 50.0 38.72 ug/L 77 10-150 8 50 Carbon tetrachloride ND 50.0 44.34 ug/L 89 55-145 8 30 Chlorobenzene ND 50.0 42.29 ug/L 85 64-130 17 30 Chlorodibromomethane ND 50.0 41.01 ug/L 82 56-143 11 30 Chloroethane ND 50.0 40.98 ug/L 82 50-150 2 30 Chloroform ND 50.0 44.41 ug/L 89 60-141 8 30 Chloromethane ND 50.0 48.81 ug/L 98 49-148 4 31 2-Chlorotoluene ND 50.0 39.22 ug/L 78 53-134 17 30 4-Chlorotoluene ND 50.0 40.26 ug/L 81 54-133 23 30 cis-1,2-Dichloroethene ND 50.0 48.92 ug/L 98 59-143 7 30 cis-1,3-Dichloropropene ND 50.0 48.58 ug/L 97 57-140 7 30 1,2-Dibromo-3-Chloropropane ND 50.0 37.11 ug/L 74 45-135 8 30 1,2-Dibromoethane ND 50.0 41.74 ug/L 83 64-132 12 30 Dibromomethane ND 50.0 45.84 ug/L 92 63-138 6 30 1,2-Dichlorobenzene ND 50.0 40.42 ug/L 81 52-137 21 30 1,3-Dichlorobenzene ND 50.0 41.02 ug/L 82 54-135 23 30 1,4-Dichlorobenzene ND 50.0 40.43 ug/L 81 53-135 23 30 Dichlorodifluoromethane ND 50.0 31.47 ug/L 63 16-150 7 31 1,1-Dichloroethane ND 50.0 48.92 ug/L 98 61-144 6 30 1,2-Dichloroethane ND 50.0 45.51 ug/L 91 60-141 7 30 1,1-Dichloroethene ND 50.0 42.86 ug/L 86 54-147 3 30 1,2-Dichloropropane ND 50.0 51.09 ug/L 102 66-137 6 30 1,3-Dichloropropane ND 50.0 41.29 ug/L 83 66-133 10 30 2,2-Dichloropropane ND 50.0 47.99 ug/L 96 42-144 6 31 1,1-Dichloropropene ND 50.0 44.97 ug/L 90 65-136 6 30 Di-isopropyl ether (DIPE)ND 50.0 54.17 ug/L 108 60-144 10 30 Ethanol ND F2 F1 2000 4073 E F1 F2 ug/L 204 10-150 42 40 Ethylbenzene ND 50.0 42.52 ug/L 85 58-131 18 30 Hexachlorobutadiene ND F2 50.0 44.59 F2 ug/L 89 31-149 38 36 2-Hexanone ND 200 163.9 ug/L 82 65-140 7 30 Isopropylbenzene ND 50.0 42.82 ug/L 86 56-133 21 30 4-Isopropyltoluene ND 50.0 42.59 ug/L 85 48-139 28 30 Methylene Chloride ND 50.0 48.44 ug/L 97 60-146 8 32 Methyl ethyl ketone (MEK)ND 200 189.2 ug/L 95 55-150 4 30 4-Methyl-2-pentanone ND 200 196.4 ug/L 98 63-146 3 30 Methyl-tert-butyl Ether (MTBE)ND 50.0 47.17 ug/L 94 59-137 5 30 m,p-Xylene ND 50.0 41.94 ug/L 84 57-130 17 30 Naphthalene ND 50.0 46.55 ug/L 93 25-150 23 30 n-Butylbenzene ND 50.0 42.74 ug/L 85 41-142 27 31 n-Propylbenzene ND 50.0 41.79 ug/L 84 51-138 24 30 o-Xylene ND 50.0 42.10 ug/L 84 61-130 18 30 sec-Butylbenzene ND 50.0 41.80 ug/L 84 50-138 25 30 Styrene ND 50.0 42.53 ug/L 85 58-131 19 30 tert-Butylbenzene ND F2 50.0 46.54 F2 ug/L 93 54-146 42 30 1,1,1,2-Tetrachloroethane ND 50.0 41.53 ug/L 83 59-137 13 30 1,1,2,2-Tetrachloroethane ND 50.0 40.14 ug/L 80 66-135 11 30 Tetrachloroethene ND 50.0 40.88 ug/L 82 52-133 18 30 Eurofins Savannah Page 26 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 400-227674-A-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 597471 Toluene ND 50.0 41.82 ug/L 84 65-130 14 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD trans-1,2-Dichloroethene ND 50.0 45.58 ug/L 91 61-143 7 30 trans-1,3-Dichloropropene ND 50.0 40.86 ug/L 82 53-133 11 30 1,2,3-Trichlorobenzene ND 50.0 41.93 ug/L 84 43-145 18 30 1,2,4-Trichlorobenzene ND 50.0 42.27 ug/L 85 39-148 25 30 1,1,1-Trichloroethane ND 50.0 44.95 ug/L 90 57-142 8 30 1,1,2-Trichloroethane ND 50.0 41.61 ug/L 83 66-131 10 30 Trichloroethene 2.49 50.0 49.88 ug/L 95 64-136 9 30 Trichlorofluoromethane ND 50.0 41.39 ug/L 83 54-150 7 30 1,2,3-Trichloropropane ND 50.0 38.14 ug/L 76 65-133 10 30 1,2,4-Trimethylbenzene ND 50.0 41.11 ug/L 82 50-139 21 30 1,3,5-Trimethylbenzene ND 50.0 40.97 ug/L 82 52-135 22 30 Vinyl acetate ND 100 107.5 ug/L 108 26-150 10 33 Vinyl chloride ND 50.0 42.79 ug/L 86 46-150 8 30 Xylene (total)ND 100 84.04 ug/L 84 59-130 17 30 4-Bromofluorobenzene 72 -119 Surrogate 96 MSD MSD Qualifier Limits%Recovery 93Dibromofluoromethane 75 -126 91Toluene-d8 (Surr)64 -132 Client Sample ID: Method BlankLab Sample ID: MB 400-597674/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 RL MDL Acetone ND 25.0 10.0 ug/L 10/25/22 09:33 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.1301.00 ug/L 10/25/22 09:33 1Benzene ND 0.5401.00 ug/L 10/25/22 09:33 1Bromobenzene ND 0.2101.00 ug/L 10/25/22 09:33 1Bromochloromethane ND 0.5001.00 ug/L 10/25/22 09:33 1Bromodichloromethane ND 0.2505.00 ug/L 10/25/22 09:33 1Bromoform ND 0.9801.00 ug/L 10/25/22 09:33 1Bromomethane ND 0.1901.00 ug/L 10/25/22 09:33 1Carbon tetrachloride ND 0.1501.00 ug/L 10/25/22 09:33 1Chlorobenzene ND 0.2401.00 ug/L 10/25/22 09:33 1Chlorodibromomethane ND 0.7601.00 ug/L 10/25/22 09:33 1Chloroethane ND 1.001.00 ug/L 10/25/22 09:33 1Chloroform ND 0.3201.00 ug/L 10/25/22 09:33 1Chloromethane ND 0.5701.00 ug/L 10/25/22 09:33 12-Chlorotoluene ND 0.5601.00 ug/L 10/25/22 09:33 14-Chlorotoluene ND 0.2001.00 ug/L 10/25/22 09:33 1cis-1,2-Dichloroethene ND 0.5005.00 ug/L 10/25/22 09:33 1cis-1,3-Dichloropropene ND 1.505.00 ug/L 10/25/22 09:33 11,2-Dibromo-3-Chloropropane ND 0.2301.00 ug/L 10/25/22 09:33 11,2-Dibromoethane ND 0.2205.00 ug/L 10/25/22 09:33 1Dibromomethane ND 0.5001.00 ug/L 10/25/22 09:33 11,2-Dichlorobenzene ND 0.5401.00 ug/L 10/25/22 09:33 11,3-Dichlorobenzene Eurofins Savannah Page 27 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-597674/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 RL MDL 1,4-Dichlorobenzene ND 1.00 0.640 ug/L 10/25/22 09:33 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.8501.00 ug/L 10/25/22 09:33 1Dichlorodifluoromethane ND 0.5001.00 ug/L 10/25/22 09:33 11,1-Dichloroethane ND 0.1901.00 ug/L 10/25/22 09:33 11,2-Dichloroethane ND 0.5001.00 ug/L 10/25/22 09:33 11,1-Dichloroethene ND 0.5001.00 ug/L 10/25/22 09:33 11,2-Dichloropropane ND 0.5001.00 ug/L 10/25/22 09:33 11,3-Dichloropropane ND 0.5001.00 ug/L 10/25/22 09:33 12,2-Dichloropropane ND 0.5001.00 ug/L 10/25/22 09:33 11,1-Dichloropropene ND 0.2001.00 ug/L 10/25/22 09:33 1Di-isopropyl ether (DIPE) ND 24.0100 ug/L 10/25/22 09:33 1Ethanol ND 0.5001.00 ug/L 10/25/22 09:33 1Ethylbenzene ND 0.9005.00 ug/L 10/25/22 09:33 1Hexachlorobutadiene ND 1.4025.0 ug/L 10/25/22 09:33 12-Hexanone ND 0.5301.00 ug/L 10/25/22 09:33 1Isopropylbenzene ND 0.7101.00 ug/L 10/25/22 09:33 14-Isopropyltoluene ND 3.005.00 ug/L 10/25/22 09:33 1Methylene Chloride ND 2.6025.0 ug/L 10/25/22 09:33 1Methyl ethyl ketone (MEK) ND 1.8025.0 ug/L 10/25/22 09:33 14-Methyl-2-pentanone ND 0.2201.00 ug/L 10/25/22 09:33 1Methyl-tert-butyl Ether (MTBE) ND 0.6305.00 ug/L 10/25/22 09:33 1m,p-Xylene ND 3.005.00 ug/L 10/25/22 09:33 1Naphthalene ND 0.7601.00 ug/L 10/25/22 09:33 1n-Butylbenzene ND 0.6901.00 ug/L 10/25/22 09:33 1n-Propylbenzene ND 0.6005.00 ug/L 10/25/22 09:33 1o-Xylene ND 0.7001.00 ug/L 10/25/22 09:33 1sec-Butylbenzene ND 1.001.00 ug/L 10/25/22 09:33 1Styrene ND 0.6301.00 ug/L 10/25/22 09:33 1tert-Butylbenzene ND 0.1601.00 ug/L 10/25/22 09:33 11,1,1,2-Tetrachloroethane ND 0.5001.00 ug/L 10/25/22 09:33 11,1,2,2-Tetrachloroethane ND 0.9001.00 ug/L 10/25/22 09:33 1Tetrachloroethene ND 0.4101.00 ug/L 10/25/22 09:33 1Toluene ND 0.5001.00 ug/L 10/25/22 09:33 1trans-1,2-Dichloroethene ND 0.2005.00 ug/L 10/25/22 09:33 1trans-1,3-Dichloropropene ND 0.9001.00 ug/L 10/25/22 09:33 11,2,3-Trichlorobenzene ND 0.8201.00 ug/L 10/25/22 09:33 11,2,4-Trichlorobenzene ND 0.1801.00 ug/L 10/25/22 09:33 11,1,1-Trichloroethane ND 0.2105.00 ug/L 10/25/22 09:33 11,1,2-Trichloroethane ND 0.1501.00 ug/L 10/25/22 09:33 1Trichloroethene ND 0.5201.00 ug/L 10/25/22 09:33 1Trichlorofluoromethane ND 0.8405.00 ug/L 10/25/22 09:33 11,2,3-Trichloropropane ND 0.8201.00 ug/L 10/25/22 09:33 11,2,4-Trimethylbenzene ND 0.5601.00 ug/L 10/25/22 09:33 11,3,5-Trimethylbenzene ND 0.93025.0 ug/L 10/25/22 09:33 1Vinyl acetate ND 0.5001.00 ug/L 10/25/22 09:33 1Vinyl chloride ND 1.6010.0 ug/L 10/25/22 09:33 1Xylene (total) Eurofins Savannah Page 28 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-597674/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 4-Bromofluorobenzene 93 72-119 10/25/22 09:33 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 91 10/25/22 09:33 1Dibromofluoromethane75-126 103 10/25/22 09:33 1Toluene-d8 (Surr)64-132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-597674/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 Acetone 200 265.3 ug/L 133 43-160 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Benzene 50.0 55.20 ug/L 110 70-130 Bromobenzene 50.0 56.94 ug/L 114 70-132 Bromochloromethane 50.0 51.19 ug/L 102 70-130 Bromodichloromethane 50.0 50.11 ug/L 100 67-133 Bromoform 50.0 53.62 ug/L 107 57-140 Bromomethane 50.0 49.73 ug/L 99 10-160 Carbon tetrachloride 50.0 52.23 ug/L 104 61-137 Chlorobenzene 50.0 56.28 ug/L 113 70-130 Chlorodibromomethane 50.0 49.07 ug/L 98 67-135 Chloroethane 50.0 54.12 ug/L 108 55-141 Chloroform 50.0 52.43 ug/L 105 69-130 Chloromethane 50.0 68.88 *+ug/L 138 58-137 2-Chlorotoluene 50.0 57.15 ug/L 114 70-130 4-Chlorotoluene 50.0 58.04 ug/L 116 70-130 cis-1,2-Dichloroethene 50.0 52.62 ug/L 105 68-130 cis-1,3-Dichloropropene 50.0 50.15 ug/L 100 69-132 1,2-Dibromo-3-Chloropropane 50.0 50.10 ug/L 100 54-135 1,2-Dibromoethane 50.0 50.19 ug/L 100 70-130 Dibromomethane 50.0 49.47 ug/L 99 70-130 1,2-Dichlorobenzene 50.0 57.80 ug/L 116 67-130 1,3-Dichlorobenzene 50.0 60.12 ug/L 120 70-130 1,4-Dichlorobenzene 50.0 57.70 ug/L 115 70-130 Dichlorodifluoromethane 50.0 71.81 ug/L 144 41-146 1,1-Dichloroethane 50.0 53.49 ug/L 107 70-130 1,2-Dichloroethane 50.0 48.54 ug/L 97 69-130 1,1-Dichloroethene 50.0 49.97 ug/L 100 63-134 1,2-Dichloropropane 50.0 53.84 ug/L 108 70-130 1,3-Dichloropropane 50.0 49.13 ug/L 98 70-130 2,2-Dichloropropane 50.0 48.94 ug/L 98 52-135 1,1-Dichloropropene 50.0 55.27 ug/L 111 70-130 Di-isopropyl ether (DIPE)50.0 49.23 ug/L 98 64-132 Ethanol 2000 1347 ug/L 67 20-160 Ethylbenzene 50.0 58.75 ug/L 117 70-130 Hexachlorobutadiene 50.0 77.69 *+ug/L 155 53-140 2-Hexanone 200 188.3 ug/L 94 65-137 Isopropylbenzene 50.0 60.16 ug/L 120 70-130 4-Isopropyltoluene 50.0 65.60 *+ug/L 131 65-130 Methylene Chloride 50.0 52.05 ug/L 104 66-135 Eurofins Savannah Page 29 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-597674/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 Methyl ethyl ketone (MEK)200 213.5 ug/L 107 61-145 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 4-Methyl-2-pentanone 200 186.2 ug/L 93 69-138 Methyl-tert-butyl Ether (MTBE)50.0 47.44 ug/L 95 66-130 m,p-Xylene 50.0 56.22 ug/L 112 70-130 Naphthalene 50.0 69.90 ug/L 140 47-149 n-Butylbenzene 50.0 74.61 *+ug/L 149 67-130 n-Propylbenzene 50.0 59.16 ug/L 118 70-130 o-Xylene 50.0 54.23 ug/L 108 70-130 sec-Butylbenzene 50.0 62.48 ug/L 125 66-130 Styrene 50.0 53.96 ug/L 108 70-130 tert-Butylbenzene 50.0 67.78 ug/L 136 64-139 1,1,1,2-Tetrachloroethane 50.0 52.66 ug/L 105 67-131 1,1,2,2-Tetrachloroethane 50.0 53.28 ug/L 107 70-131 Tetrachloroethene 50.0 59.88 ug/L 120 65-130 Toluene 50.0 54.85 ug/L 110 70-130 trans-1,2-Dichloroethene 50.0 54.67 ug/L 109 70-130 trans-1,3-Dichloropropene 50.0 49.21 ug/L 98 63-130 1,2,3-Trichlorobenzene 50.0 73.16 *+ug/L 146 60-138 1,2,4-Trichlorobenzene 50.0 75.55 *+ug/L 151 60-140 1,1,1-Trichloroethane 50.0 51.86 ug/L 104 68-130 1,1,2-Trichloroethane 50.0 50.00 ug/L 100 70-130 Trichloroethene 50.0 56.28 ug/L 113 70-130 Trichlorofluoromethane 50.0 48.11 ug/L 96 65-138 1,2,3-Trichloropropane 50.0 46.42 ug/L 93 70-130 1,2,4-Trimethylbenzene 50.0 60.32 ug/L 121 70-130 1,3,5-Trimethylbenzene 50.0 60.30 ug/L 121 69-130 Vinyl acetate 100 97.93 ug/L 98 26-160 Vinyl chloride 50.0 55.82 ug/L 112 59-136 Xylene (total)100 110.4 ug/L 110 70-130 4-Bromofluorobenzene 72 -119 Surrogate 93 LCS LCS Qualifier Limits%Recovery 90Dibromofluoromethane 75 -126 99Toluene-d8 (Surr)64 -132 Client Sample ID: Matrix SpikeLab Sample ID: 680-223578-B-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 Acetone ND 200 190.4 ug/L 95 43-150 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 50.0 50.55 ug/L 101 56-142 Bromobenzene ND 50.0 52.60 ug/L 105 59-136 Bromochloromethane ND 50.0 48.13 ug/L 96 64-140 Bromodichloromethane ND 50.0 46.75 ug/L 94 59-143 Bromoform ND 50.0 51.22 ug/L 102 50-140 Bromomethane ND 50.0 50.16 ug/L 100 10-150 Carbon tetrachloride ND 50.0 44.51 ug/L 89 55-145 Eurofins Savannah Page 30 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 680-223578-B-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 Chlorobenzene ND 50.0 51.17 ug/L 102 64-130 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Chlorodibromomethane ND 50.0 48.62 ug/L 97 56-143 Chloroethane ND 50.0 49.44 ug/L 99 50-150 Chloroform ND 50.0 48.88 ug/L 98 60-141 Chloromethane ND *+50.0 57.84 ug/L 116 49-148 2-Chlorotoluene ND 50.0 44.88 ug/L 90 53-134 4-Chlorotoluene ND 50.0 46.40 ug/L 93 54-133 cis-1,2-Dichloroethene ND 50.0 48.80 ug/L 98 59-143 cis-1,3-Dichloropropene ND 50.0 46.82 ug/L 94 57-140 1,2-Dibromo-3-Chloropropane ND 50.0 50.47 ug/L 101 45-135 1,2-Dibromoethane ND 50.0 50.38 ug/L 101 64-132 Dibromomethane ND 50.0 48.69 ug/L 97 63-138 1,2-Dichlorobenzene ND 50.0 52.00 ug/L 104 52-137 1,3-Dichlorobenzene ND 50.0 53.33 ug/L 107 54-135 1,4-Dichlorobenzene ND 50.0 51.11 ug/L 102 53-135 Dichlorodifluoromethane ND 50.0 61.25 ug/L 123 16-150 1,1-Dichloroethane ND 50.0 48.34 ug/L 97 61-144 1,2-Dichloroethane ND 50.0 46.52 ug/L 93 60-141 1,1-Dichloroethene ND 50.0 41.77 ug/L 84 54-147 1,2-Dichloropropane ND 50.0 50.50 ug/L 101 66-137 1,3-Dichloropropane ND 50.0 51.03 ug/L 102 66-133 2,2-Dichloropropane ND 50.0 42.24 ug/L 84 42-144 1,1-Dichloropropene ND 50.0 47.70 ug/L 95 65-136 Di-isopropyl ether (DIPE)ND 50.0 46.44 ug/L 93 60-144 Ethanol ND 2000 1310 ug/L 66 10-150 Ethylbenzene ND 50.0 51.21 ug/L 102 58-131 Hexachlorobutadiene ND *+50.0 56.75 ug/L 114 31-149 2-Hexanone ND 200 200.3 ug/L 100 65-140 Isopropylbenzene ND 50.0 50.38 ug/L 101 56-133 4-Isopropyltoluene ND *+50.0 52.58 ug/L 105 48-139 Methylene Chloride ND 50.0 49.07 ug/L 98 60-146 Methyl ethyl ketone (MEK)ND 200 195.0 ug/L 98 55-150 4-Methyl-2-pentanone ND 200 195.3 ug/L 98 63-146 Methyl-tert-butyl Ether (MTBE)ND 50.0 45.14 ug/L 90 59-137 m,p-Xylene ND 50.0 49.50 ug/L 99 57-130 Naphthalene ND 50.0 69.84 ug/L 140 25-150 n-Butylbenzene ND *+50.0 57.49 ug/L 115 41-142 n-Propylbenzene ND 50.0 48.08 ug/L 96 51-138 o-Xylene ND 50.0 47.94 ug/L 96 61-130 sec-Butylbenzene ND 50.0 50.75 ug/L 101 50-138 Styrene ND 50.0 48.44 ug/L 97 58-131 tert-Butylbenzene ND 50.0 56.16 ug/L 112 54-146 1,1,1,2-Tetrachloroethane ND 50.0 49.95 ug/L 100 59-137 1,1,2,2-Tetrachloroethane ND 50.0 52.95 ug/L 106 66-135 Tetrachloroethene ND 50.0 51.32 ug/L 103 52-133 Toluene ND 50.0 50.50 ug/L 101 65-130 trans-1,2-Dichloroethene ND 50.0 47.42 ug/L 95 61-143 trans-1,3-Dichloropropene ND 50.0 48.68 ug/L 97 53-133 1,2,3-Trichlorobenzene ND *+50.0 66.33 ug/L 133 43-145 Eurofins Savannah Page 31 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 680-223578-B-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 1,2,4-Trichlorobenzene ND *+50.0 66.95 ug/L 134 39-148 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,1,1-Trichloroethane ND 50.0 45.81 ug/L 92 57-142 1,1,2-Trichloroethane ND 50.0 51.10 ug/L 102 66-131 Trichloroethene ND 50.0 48.75 ug/L 98 64-136 Trichlorofluoromethane ND 50.0 40.29 ug/L 81 54-150 1,2,3-Trichloropropane ND 50.0 47.06 ug/L 94 65-133 1,2,4-Trimethylbenzene ND 50.0 50.82 ug/L 102 50-139 1,3,5-Trimethylbenzene ND 50.0 49.74 ug/L 99 52-135 Vinyl acetate ND 100 94.83 ug/L 95 26-150 Vinyl chloride ND 50.0 49.18 ug/L 98 46-150 Xylene (total)ND 100 97.44 ug/L 97 59-130 4-Bromofluorobenzene 72 -119 Surrogate 92 MS MS Qualifier Limits%Recovery 92Dibromofluoromethane 75 -126 105Toluene-d8 (Surr)64 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 680-223578-B-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 Acetone ND 200 182.9 ug/L 91 43-150 4 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 50.0 46.73 ug/L 93 56-142 8 30 Bromobenzene ND 50.0 49.42 ug/L 99 59-136 6 30 Bromochloromethane ND 50.0 44.97 ug/L 90 64-140 7 30 Bromodichloromethane ND 50.0 43.99 ug/L 88 59-143 6 30 Bromoform ND 50.0 48.86 ug/L 98 50-140 5 30 Bromomethane ND 50.0 46.35 ug/L 93 10-150 8 50 Carbon tetrachloride ND 50.0 42.27 ug/L 85 55-145 5 30 Chlorobenzene ND 50.0 46.71 ug/L 93 64-130 9 30 Chlorodibromomethane ND 50.0 45.24 ug/L 90 56-143 7 30 Chloroethane ND 50.0 48.11 ug/L 96 50-150 3 30 Chloroform ND 50.0 45.77 ug/L 92 60-141 7 30 Chloromethane ND *+50.0 57.17 ug/L 114 49-148 1 31 2-Chlorotoluene ND 50.0 42.05 ug/L 84 53-134 7 30 4-Chlorotoluene ND 50.0 45.40 ug/L 91 54-133 2 30 cis-1,2-Dichloroethene ND 50.0 45.43 ug/L 91 59-143 7 30 cis-1,3-Dichloropropene ND 50.0 44.57 ug/L 89 57-140 5 30 1,2-Dibromo-3-Chloropropane ND 50.0 48.78 ug/L 98 45-135 3 30 1,2-Dibromoethane ND 50.0 46.72 ug/L 93 64-132 8 30 Dibromomethane ND 50.0 45.96 ug/L 92 63-138 6 30 1,2-Dichlorobenzene ND 50.0 47.90 ug/L 96 52-137 8 30 1,3-Dichlorobenzene ND 50.0 46.98 ug/L 94 54-135 13 30 1,4-Dichlorobenzene ND 50.0 45.67 ug/L 91 53-135 11 30 Dichlorodifluoromethane ND 50.0 59.45 ug/L 119 16-150 3 31 1,1-Dichloroethane ND 50.0 45.77 ug/L 92 61-144 5 30 1,2-Dichloroethane ND 50.0 43.76 ug/L 88 60-141 6 30 Eurofins Savannah Page 32 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 680-223578-B-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 597674 1,1-Dichloroethene ND 50.0 40.08 ug/L 80 54-147 4 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,2-Dichloropropane ND 50.0 47.35 ug/L 95 66-137 6 30 1,3-Dichloropropane ND 50.0 45.91 ug/L 92 66-133 11 30 2,2-Dichloropropane ND 50.0 39.58 ug/L 79 42-144 6 31 1,1-Dichloropropene ND 50.0 44.44 ug/L 89 65-136 7 30 Di-isopropyl ether (DIPE)ND 50.0 44.18 ug/L 88 60-144 5 30 Ethanol ND 2000 1281 ug/L 64 10-150 2 40 Ethylbenzene ND 50.0 45.22 ug/L 90 58-131 12 30 Hexachlorobutadiene ND *+50.0 54.34 ug/L 109 31-149 4 36 2-Hexanone ND 200 180.0 ug/L 90 65-140 11 30 Isopropylbenzene ND 50.0 44.70 ug/L 89 56-133 12 30 4-Isopropyltoluene ND *+50.0 47.88 ug/L 96 48-139 9 30 Methylene Chloride ND 50.0 46.01 ug/L 92 60-146 6 32 Methyl ethyl ketone (MEK)ND 200 180.5 ug/L 90 55-150 8 30 4-Methyl-2-pentanone ND 200 183.2 ug/L 92 63-146 6 30 Methyl-tert-butyl Ether (MTBE)ND 50.0 44.92 ug/L 90 59-137 0 30 m,p-Xylene ND 50.0 43.55 ug/L 87 57-130 13 30 Naphthalene ND 50.0 68.74 ug/L 137 25-150 2 30 n-Butylbenzene ND *+50.0 50.61 ug/L 101 41-142 13 31 n-Propylbenzene ND 50.0 44.14 ug/L 88 51-138 9 30 o-Xylene ND 50.0 42.61 ug/L 85 61-130 12 30 sec-Butylbenzene ND 50.0 47.20 ug/L 94 50-138 7 30 Styrene ND 50.0 42.95 ug/L 86 58-131 12 30 tert-Butylbenzene ND 50.0 52.38 ug/L 105 54-146 7 30 1,1,1,2-Tetrachloroethane ND 50.0 45.04 ug/L 90 59-137 10 30 1,1,2,2-Tetrachloroethane ND 50.0 51.99 ug/L 104 66-135 2 30 Tetrachloroethene ND 50.0 45.50 ug/L 91 52-133 12 30 Toluene ND 50.0 46.50 ug/L 93 65-130 8 30 trans-1,2-Dichloroethene ND 50.0 44.33 ug/L 89 61-143 7 30 trans-1,3-Dichloropropene ND 50.0 44.94 ug/L 90 53-133 8 30 1,2,3-Trichlorobenzene ND *+50.0 62.16 ug/L 124 43-145 6 30 1,2,4-Trichlorobenzene ND *+50.0 62.10 ug/L 124 39-148 8 30 1,1,1-Trichloroethane ND 50.0 42.79 ug/L 86 57-142 7 30 1,1,2-Trichloroethane ND 50.0 48.43 ug/L 97 66-131 5 30 Trichloroethene ND 50.0 44.36 ug/L 89 64-136 9 30 Trichlorofluoromethane ND 50.0 40.30 ug/L 81 54-150 0 30 1,2,3-Trichloropropane ND 50.0 46.15 ug/L 92 65-133 2 30 1,2,4-Trimethylbenzene ND 50.0 47.47 ug/L 95 50-139 7 30 1,3,5-Trimethylbenzene ND 50.0 45.99 ug/L 92 52-135 8 30 Vinyl acetate ND 100 93.17 ug/L 93 26-150 2 33 Vinyl chloride ND 50.0 46.45 ug/L 93 46-150 6 30 Xylene (total)ND 100 86.15 ug/L 86 59-130 12 30 4-Bromofluorobenzene 72 -119 Surrogate 97 MSD MSD Qualifier Limits%Recovery 93Dibromofluoromethane 75 -126 102Toluene-d8 (Surr)64 -132 Eurofins Savannah Page 33 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Sample Results Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method: SM6200-B - Volatile Organic Compounds (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-597934/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 597934 RL MDL 4-Isopropyltoluene ND 1.00 0.710 ug/L 10/26/22 17:04 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier ND 0.7601.00 ug/L 10/26/22 17:04 1n-Butylbenzene 4-Bromofluorobenzene 96 72-119 10/26/22 17:04 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 101 10/26/22 17:04 1Dibromofluoromethane75-126 100 10/26/22 17:04 1Toluene-d8 (Surr)64-132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-597934/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 597934 4-Isopropyltoluene 50.0 57.01 ug/L 114 65-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits n-Butylbenzene 50.0 59.09 ug/L 118 67-130 4-Bromofluorobenzene 72 -119 Surrogate 100 LCS LCS Qualifier Limits%Recovery 96Dibromofluoromethane 75 -126 96Toluene-d8 (Surr)64 -132 Client Sample ID: Matrix SpikeLab Sample ID: 400-227749-A-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 597934 4-Isopropyltoluene ND F2 50.0 26.31 ug/L 53 48-139 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits n-Butylbenzene ND F2 50.0 24.79 ug/L 50 41-142 4-Bromofluorobenzene 72 -119 Surrogate 104 MS MS Qualifier Limits%Recovery 98Dibromofluoromethane 75 -126 99Toluene-d8 (Surr)64 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 400-227749-A-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 597934 4-Isopropyltoluene ND F2 50.0 37.53 F2 ug/L 75 48-139 35 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD n-Butylbenzene ND F2 50.0 38.07 F2 ug/L 76 41-142 42 31 4-Bromofluorobenzene 72 -119 Surrogate 102 MSD MSD Qualifier Limits%Recovery 96Dibromofluoromethane 75 -126 97Toluene-d8 (Surr)64 -132 Eurofins Savannah Page 34 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 QC Association Summary Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash GC/MS VOA Analysis Batch: 597471 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch GW SM6200-B680-223491-6 MW-10 Total/NA GW SM6200-B680-223491-7 MW-11 Total/NA Water SM6200-B680-223491-8 Field Blank Total/NA Water SM6200-BMB 400-597471/4 Method Blank Total/NA Water SM6200-BLCS 400-597471/1002 Lab Control Sample Total/NA Water SM6200-B400-227674-A-1 MS Matrix Spike Total/NA Water SM6200-B400-227674-A-1 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 597674 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch GW SM6200-B680-223491-1 MW-7 Total/NA GW SM6200-B680-223491-2 MW-8 Total/NA GW SM6200-B680-223491-3 MW-9 Total/NA GW SM6200-B680-223491-4 MW-13 Total/NA GW SM6200-B680-223491-5 MW-14 Total/NA Water SM6200-BMB 400-597674/4 Method Blank Total/NA Water SM6200-BLCS 400-597674/1002 Lab Control Sample Total/NA Water SM6200-B680-223578-B-3 MS Matrix Spike Total/NA Water SM6200-B680-223578-B-3 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 597934 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch GW SM6200-B680-223491-1 MW-7 Total/NA GW SM6200-B680-223491-2 MW-8 Total/NA GW SM6200-B680-223491-3 MW-9 Total/NA GW SM6200-B680-223491-4 MW-13 Total/NA Water SM6200-BMB 400-597934/4 Method Blank Total/NA Water SM6200-BLCS 400-597934/1002 Lab Control Sample Total/NA Water SM6200-B400-227749-A-1 MS Matrix Spike Total/NA Water SM6200-B400-227749-A-1 MSD Matrix Spike Duplicate Total/NA Eurofins Savannah Page 35 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Lab Chronicle Client: WithersRavenel Inc Job ID: 680-223491-1 Project/Site: Eden Superior Car Wash Client Sample ID: MW-7 Lab Sample ID: 680-223491-1 Matrix: GWDate Collected: 10/17/22 12:20 Date Received: 10/19/22 08:00 Analysis SM6200-B JE10/25/22 18:162 EET PEN597674 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID:Argo Analysis SM6200-B 2 597934 10/26/22 19:37 WPD EET PENTotal/NA 5 mL 5 mL CH_CONANInstrument ID: Client Sample ID: MW-8 Lab Sample ID: 680-223491-2 Matrix: GWDate Collected: 10/17/22 12:10 Date Received: 10/19/22 08:00 Analysis SM6200-B JE10/25/22 18:415 EET PEN597674 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID:Argo Analysis SM6200-B 5 597934 10/26/22 20:03 WPD EET PENTotal/NA 5 mL 5 mL CH_CONANInstrument ID: Client Sample ID: MW-9 Lab Sample ID: 680-223491-3 Matrix: GWDate Collected: 10/17/22 13:00 Date Received: 10/19/22 08:00 Analysis SM6200-B JE10/25/22 15:191 EET PEN597674 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID:Argo Analysis SM6200-B 1 597934 10/26/22 19:10 WPD EET PENTotal/NA 5 mL 5 mL CH_CONANInstrument ID: Client Sample ID: MW-13 Lab Sample ID: 680-223491-4 Matrix: GWDate Collected: 10/17/22 13:30 Date Received: 10/19/22 08:00 Analysis SM6200-B JE10/25/22 15:451 EET PEN597674 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID:Argo Analysis SM6200-B 1 597934 10/26/22 18:44 WPD EET PENTotal/NA 5 mL 5 mL CH_CONANInstrument ID: Client Sample ID: MW-14 Lab Sample ID: 680-223491-5 Matrix: GWDate Collected: 10/17/22 13:50 Date Received: 10/19/22 08:00 Analysis SM6200-B JE10/25/22 16:101 EET PEN597674 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID:Argo Eurofins Savannah Page 36 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Lab Chronicle Client: WithersRavenel Inc Job ID: 680-223491-1 Project/Site: Eden Superior Car Wash Client Sample ID: MW-10 Lab Sample ID: 680-223491-6 Matrix: GWDate Collected: 10/17/22 11:15 Date Received: 10/19/22 08:00 Analysis SM6200-B WPD10/24/22 14:1510 EET PEN597471 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID:Brutus Client Sample ID: MW-11 Lab Sample ID: 680-223491-7 Matrix: GWDate Collected: 10/17/22 11:30 Date Received: 10/19/22 08:00 Analysis SM6200-B WPD10/24/22 14:39200 EET PEN597471 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID:Brutus Client Sample ID: Field Blank Lab Sample ID: 680-223491-8 Matrix: WaterDate Collected: 10/17/22 14:45 Date Received: 10/19/22 08:00 Analysis SM6200-B WPD10/24/22 13:051 EET PEN597471 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID:Brutus Laboratory References: EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Savannah Page 37 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Accreditation/Certification Summary Client: WithersRavenel Inc Job ID: 680-223491-1 Project/Site: Eden Superior Car Wash Laboratory: Eurofins Pensacola All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report. Authority Program Identification Number Expiration Date Alabama State 40150 06-30-23 ANAB ISO/IEC 17025 L2471 02-23-23 Arkansas DEQ State 88-0689 09-01-23 California State 2510 06-30-23 Florida NELAP E81010 06-30-23 Georgia State E81010(FL)06-30-23 Illinois NELAP 200041 10-09-23 Kansas NELAP E-10253 10-31-22 Kentucky (UST)State 53 06-30-23 Kentucky (WW)State KY98030 12-31-22 Louisiana (All)NELAP 30976 06-30-23 Louisiana (DW)State LA017 12-31-22 Maryland State 233 09-30-23 Michigan State 9912 06-30-23 North Carolina (WW/SW)State 314 12-31-22 Oklahoma NELAP 9810 08-31-23 Pennsylvania NELAP 68-00467 01-31-23 South Carolina State 96026 06-30-23 Tennessee State TN02907 06-30-23 Texas NELAP T104704286 09-30-23 US Fish & Wildlife US Federal Programs A22340 06-30-23 USDA US Federal Programs P330-21-00056 05-17-24 Virginia NELAP 460166 06-14-23 West Virginia DEP State 136 03-31-23 Eurofins Savannah Page 38 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Method Summary Job ID: 680-223491-1Client: WithersRavenel Inc Project/Site: Eden Superior Car Wash Method Method Description LaboratoryProtocol SMSM6200-B Volatile Organic Compounds EET PEN SW8465030BPurge and Trap EET PEN Protocol References: SM = "Standard Methods For The Examination Of Water And Wastewater" SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 Eurofins Savannah Page 39 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Page 40 of 44 10/27/2022 1234567 8 9 10 11 12 Page 41 of 44 10/27/2022 1234567 8 9 10 11 12 Page 42 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Login Sample Receipt Checklist Client: WithersRavenel Inc Job Number: 680-223491-1 Login Number: 223491 Question Answer Comment Creator: Padayao, Abigail List Source: Eurofins Savannah List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. TrueSample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded. TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. FalseContainers are not broken or leaking.Containers recd broken. Sufficient sample in remaining containers for analysis. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. TrueSample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Savannah Page 43 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 Login Sample Receipt Checklist Client: WithersRavenel Inc Job Number: 680-223491-1 Login Number: 223491 Question Answer Comment Creator: Roberts, Alexis J List Source: Eurofins Pensacola List Creation: 10/22/22 10:13 AMList Number: 2 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. N/AThe cooler's custody seal, if present, is intact. N/ASample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded.1.5°C IR8 TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC.Sample 2 only had 1 of the 3 containers arrive TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Savannah Page 44 of 44 10/27/2022 1 2 3 4 5 6 7 8 9 10 11 12 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.