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HomeMy WebLinkAboutMO-7008_27716_CA_MRP_20230508  WithersRavenel Our People. Your Success.    115 MacKenan Drive | Cary, NC 27511  t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F‐1479  Asheville | Cary | Charlotte | Greensboro | Lumberton | Pittsboro | Raleigh | Southern Pines | Wilmington          GROUNDWATER MONITORING REPORT    Springs Road Sporting & Shooting  NCDEQ Incident #27716  UST # MO‐7008  3462 Springs Road NE  Hickory, Catawba County, North Carolina  WithersRavenel Project No. 23‐0307‐EL                                            Prepared for:  State of North Carolina  Department of Environmental Quality  Division of Waste Management   Underground Storage Tank Section  Federal & State Lead Program  1646 Mail Service Center  Raleigh, North Carolina 27699‐1646    Prepared by: WithersRavenel 115 MacKenan Drive  Cary, North Carolina 27511  North Carolina Firm License No. F‐1479  May 8, 2023 .    WithersRavenel Our People. Your Success.        115 MacKenan Drive | Cary, NC 27511  t: 919.469.3340 | f: 919.467.6008 | www.withersravenel.com | License No. F‐1479  Asheville | Cary | Charlotte | Greensboro | Lumberton | Pittsboro | Raleigh | Southern Pines | Wilmington    May 8, 2023    State of North Carolina  Department of Environmental Quality  Federal & State Lead Program  Division of Waste Management‐Underground Storage Tank Section  1646 Mail Service Center  Raleigh, North Carolina 27699‐1646    Attn:  Ms. Kristie Oseguera    Re:  Groundwater Monitoring Report   Springs Road Sporting & Shooting  3462 Springs Road NE  Hickory, Catawba County, North Carolina  Groundwater Incident Number: 27716  UST Number: MO‐7008  WR Project Number:  23‐0307‐EL    Ms. Oseguera:  WithersRavenel, Inc. (WR) has completed a groundwater sampling event and the replacement of  the vault for monitoring well MW‐1 as described in our proposal numbered TA‐01 for the above  referenced site under Contract # N70522‐C, approved on March 15, 2023. The enclosed report  summarizes results of the recently completed activities.       WR appreciates the opportunity to be of service to the Federal & State Lead Program.  Should you  have any questions regarding the attached, please contact us at (919) 469‐3340.    Cordially,  WithersRavenel   Matilynn Maltba  Environmental Geologist I     Elizabeth A. Allyn, P.G.  Environmental Project Geologist II  WithersRavenel Our People. Your Success.      Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 23‐0307‐EL  Groundwater Monitoring Report May 2023  i      TABLE OF CONTENTS     SECTION A.  SITE INFORMATION .................................................................................................................... 1  SECTION B.  EXECUTIVE SUMMARY ............................................................................................................... 3  SECTION C.  SITE HISTORY AND CHARACTERIZATION ........................................................................... 5  SECTION D. GROUNDWATER SAMPLING – MARCH 2023 ..................................................................... 9  SECTION E. CONCLUSIONS AND RECOMMENDATIONS ..................................................................... 10    FIGURES   Figure 1 General Location Map  Figure 2 Site Map  Figure 3 Receptor Map  Figure 4 Groundwater Elevation Contour Map – March 2023  Figure 5 Groundwater Analytical Map – March 2023  Figure 6 Benzene Isoconcentration Contour Map – March 2023  Figure 7 MTBE Isoconcentration Contour Map – March 2023     TABLES   Table B‐1 Site History: UST/AST System & Other Release Information  Table B‐4 Summary of Groundwater Analytical Results  Table B‐4A Summary of Historical Groundwater Analytical Results  Table B‐5A Public and Private Water Supply Well Information  Table B‐7 Monitoring & Remediation Well Construction Information  Table B‐9 Current & Historical Groundwater Elevations     APPENDICES   Appendix A Field Notes and Photographic Record  Appendix B Historical Groundwater Analytical Data   Appendix C Laboratory Analytical Results  Appendix D Standard Operating Procedures  Appendix E GSI Mann‐Kendall Toolkits       WithersRavenel Our People. Your Success.      Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 02172214.93  Monitoring Report May 2023  1      SECTION A.  SITE INFORMATION   1. Site Identification  Date of Report:  May 8, 2023  Facility I.D.: 00‐0‐0000033464  Incident No.: 27716  Site Risk: High   Site Rank: H156D  Land Use Category: Not Determined  Site Name: Springs Road Sporting & Shooting  Site Location: 3462 Springs Road NE  Nearest City/Town: Hickory  County: Catawba  Description of Geographical Data Point:  Center of Current UST Area  Location Method:  Google Earth™  Latitude: 35.765270°  Longitude: ‐81.266534°  2. Contact Information  UST Owner: Newton Oil Co. (Homer L. Newton)  Address: 2070 10th Street Place NW, Hickory, NC 28601  Phone: 828‐345‐0300     UST Operator: Propst Superette #11, LLC (Jeffery T. Propst)  Address: 3462 Springs Road NE, Hickory, NC 28601  Phone:    828‐256‐5720    Property Owner: Marcus Enterprises, Inc.  Address: 3462 Springs Road NE, Hickory, NC 28601  Phone: 828‐256‐5722     Property Occupant: Springs Road Sporting & Shooting  Address: 3462 Springs Road NE, Hickory, NC 28601  Phone: 828‐256‐8430     Consultant/Contractor: WithersRavenel  Address:  115 MacKenan Drive, Cary, NC 27511  Phone:  919‐469‐3340     Analytical Laboratory: Waypoint Analytical, Inc.   State Certification Number: ENV402  Address: 449 Springbrook Rd., Charlotte, NC 28217  Phone: 704‐529‐6364  WithersRavenel Our People. Your Success.  Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 23‐0307‐EL  Groundwater Monitoring Report May 2023  3      SECTION B.  EXECUTIVE SUMMARY    1. Summary of Activities Associated with Current TA    WithersRavenel, Inc. (WR), in association with Task Authorization‐01 (TA‐01) for the site, under  North Carolina Department of Environmental Quality (NCDEQ) Contract # N70522‐C, completed  assessment activities including the replacement of the well vault associated with MW‐1 and the  gauging, purging, and sampling of monitoring wells MW‐1, MW‐2, MW‐3, MW‐4, MW‐13, and  DW‐1 associated with the release at the Springs Road Sporting & Shooting property, located in  Hickory, Catawba County, NC (Site).      2. Soil, Groundwater and LNAPL Assessment Information     Soils  No soil sampling was conducted by WR in the completion of activities associated with TA‐01 for  the site.  Soil samples were collected during site check activities performed in 2005 and 2012.    During the 2005 site check activities, soil samples analytical results indicated Total Petroleum  Hydrocarbons (TPH) – Gasoline Range Organics (GRO) ranging from below the laboratory  detection limit to 63 milligrams per kilogram (mg/kg). Analytical results for TPH – Diesel Range  Organics (DRO) ranged from below the laboratory detection limit to 9,311 mg/kg and indicated a  release had occurred in the vicinity of the kerosene dispenser. As part of the 2005 Limited Site  Assessment activities, four soil samples were obtained during the installation of monitoring well  MW‐1.  None of the concentrations exceeded the laboratory detection limits.   As part of the 2012 site check activities, 26 soil borings were advanced. The soil samples were  below the detection limits for TPH‐GRO with the exception of one soil sample collected along the  product lines.  This sample contained TPH‐GRO at a concentration of 120 mg/kg. The soil samples  collected in 2012 were not analyzed for TPH‐DRO. WR is not aware of additional risk‐based  assessment of soils being undertaken at the site.      Groundwater   WR collected groundwater samples from site monitoring wells MW‐1, MW‐2, MW‐3, MW‐4,  MW‐13, and DW‐1 on March 30, 2023.  The collected groundwater samples were submitted for  laboratory analysis of volatile organic compounds (VOCs) by SM6200B plus oxygenates.  Laboratory analytical results revealed the following:   None of the reported concentrations exceeded the Gross Contamination Levels (GCLs).   Each of the sampled monitoring wells (MW‐1, MW‐2, MW‐3, MW‐4, MW‐13, and DW‐1)  exhibited concentrations exceeding the North Carolina Groundwater Quality Standards (2L  Standards) for one or more compounds in the samples collected in March 2023.    Light Non‐Aqueous Phase Liquid  Light non‐aqueous phase liquid (LNAPL) has not been observed at the site since groundwater  monitoring activities were initiated in 2005.       WithersRavenel Our People. Your Success.  Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 23‐0307‐EL  Groundwater Monitoring Report May 2023  4      3.       Receptor Information    During the April 2021 receptor survey, WR identified twenty‐one (21) water supply wells within  a 1,000‐foot (ft) radius.     Active water supply wells identified by WR include four water supply wells within 500 feet of the  source area (WSW‐3, WSW‐4, WSW‐31, and WSW‐32) and ten water supply wells between 500  and 1,000 feet of the source (WSW‐5, WSW‐6, WSW‐19, WSW‐23, WSW‐46, WSW‐50, WSW‐ 52, WSW‐57, WSW‐64, and WSW‐65).  Additional water supply wells were identified within  1,000‐ft of the source area, but these properties are connected to the City of Hickory municipal  water supply. Water supply well WSW‐2 was abandoned on January 31, 2022.    The Kool Park Mobile Home Park Community Well System (PWS ID NC0118108) is located  approximately 1,100 feet north (upgradient) of the source area.  Although the site is identified in  the Wellhead Protection (WHP) Plan, it is not located within the delineated assessment area.        4. Remediation Activities    Oxygen Releasing Compound (ORC) Advanced socks were placed in monitoring wells MW‐1, MW‐ 3, MW‐4, and MW‐13 in May 2017. The socks were removed on June 25, 2018, according to the  December 2018 Ground Water Monitoring Report prepared by Geological Resources, Inc. (GRI).  However, a remaining ORC sock was found in MW‐1 during the June 2022 sampling event. This  ORC sock was removed prior to sampling MW‐1.    5. Recommendations    Based on the results of assessment and monitoring activities conducted at the site in association  with this TA, WR recommends the following:   Conduct limited semi‐annual sampling of the impacted and downgradient monitoring wells and  wells with “increasing” or “probably increasing” concentration trends (MW‐1, MW‐2, MW‐3,  MW‐4, MW‐13, and DW‐1).   If concentrations exhibit stable or decreasing trends, conduct contaminant fate and transport  modeling to evaluate whether VOCs in site groundwater could potentially impact hydraulically  downgradient receptors.       WithersRavenel Our People. Your Success.  Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 23‐0307‐EL  Groundwater Monitoring Report May 2023  5      SECTION C.  SITE HISTORY AND CHARACTERIZATION    The following information summarizes the site history and characterization.      1. UST Information  The site is situated in a commercial/residential area of Hickory, Catawba County, NC (Figure 1),  addressed as 3462 Springs Road NE.  The site is operating as a convenient store with retail  petroleum sales identified as Propst Superette #11, facility ID 00‐0‐0000033464. The property  also operates as Springs Road Sporting & Shooting. Three 8,000‐gallon gasoline USTs and one  2,000‐gallon kerosene UST are currently in use at the site. Incident number 27716 is associated  with a suspected release from the kerosene pump in May 2004. UST information is included in  Table B‐1 and the current UST locations are shown on Figure 2.  The USTs are owned/operated  by Newton Oil Company, LLC.        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:    • Report of a Phase II Environmental Site Assessment (April 24, 2004) by EnviroAssessments, PLLC.   During the 2004 Phase II Environmental Site Assessment (ESA), four soil borings were  advanced.  Soil and groundwater samples were collected.  Impacts to soil were not noted.  The  groundwater sample collected from a Geoprobe screened sample point located to the south  of the UST basin indicated the presence of benzene above the 2L Standards.  A temporary well  was installed in this point and another groundwater sample was obtained.  This sample also  exceeded the 2L Standard for benzene.    • Site Check Report (May 6, 2005) by Allied Environmental Services, PLLC (AES).  A site check was performed between April 18 and 19, 2005 and included the collection of soil  samples from 19 soil borings, each to 11 feet bgs advanced across the site. The soil samples  were analyzed for TPH‐GRO and/or TPH‐DRO. Analytical results for TPH‐GRO ranged from  below the laboratory detection limit to 63 mg/kg. Analytical results for TPH‐DRO ranged from  below the laboratory detection limit to 9,311 mg/kg and indicated a release had occurred in  the vicinity of the kerosene dispenser. Tank and line testing was performed and the tanks and  lines passed.   • Limited Site Assessment Report (October 25, 2005) by AES.  As part of the Limited Site Assessment (LSA) activities, four shallow monitoring wells (MW‐1  through MW‐4), and one deep well (DW‐1) were installed. Impacts above the current 2L  Standards were noted in each of the five wells. Groundwater flow direction was determined  to be to the east. Forty‐four (44) water supply wells were identified within 1,500 feet of the  site.  A creek was determined to be approximately 400 feet south of the site.  • Comprehensive Site Assessment Report (September 16, 2008) by AES.   As part of the Comprehensive Site Assessment (CSA) activities, eight additional shallow  monitoring wells (MW‐5 through MW‐12) were installed.  Slug testing was performed as part  of the CSA. The average hydraulic conductivity was determined to be 80.3 feet per year.  The  WithersRavenel Our People. Your Success.  Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 23‐0307‐EL  Groundwater Monitoring Report May 2023  6      average transmissivity was determined to be 1,619 feet per year. The average linear flow  velocity was determined to be 0.99 feet per year. AES recommended quarterly or semi‐annual  sampling as a monitoring precaution.   • Groundwater Monitoring Report (February 2, 2009) by AES.  • Groundwater Monitoring Report (June 24, 2009) by AES.  • Groundwater Monitoring Report (January 22, 2010) by AES.  • Groundwater Monitoring Report (August 23, 2010) by AES.  • Groundwater Monitoring Report (February 14, 2011) by AES.  • Groundwater Monitoring Report (January 11, 2012) by AES.  Groundwater monitoring activities were performed on a semi‐annual basis and the horizontal  extent of impacted groundwater was defined.  Impacts above the 2L Standards were identified  in the deep well. In the last Groundwater Monitoring Report, it was recommended that the  UST system be tested and another quarterly sampling event be conducted prior to initiating  remediation at the site.   • Site Check Report (October 30, 2012) by AES.  A site check was requested based on the presence of gasoline compounds in groundwater  samples.  Initially, the release was attributed to the kerosene UST system.  As part of the 2012  site check activities, 26 soil borings were advanced. The soil samples were below the detection  limits for TPH‐GRO with the exception of one soil sample collected along the product lines.   This sample contained TPH‐GRO at a concentration of 120 mg/kg. The soil samples collected  in 2012 were not analyzed for TPH‐DRO.  • Groundwater Monitoring Report (October 31, 2012) by AES.  • Groundwater Monitoring Report (January 15, 2013) by AES.  • Groundwater Monitoring Report (July 25, 2013) by AES.  • Groundwater Monitoring Report (January 13, 2014) by AES, Amended March 13, 2014.   • Groundwater Monitoring Report (July 3, 2014) by AES.   • Groundwater Monitoring Report (August 7, 2015) by GRI.   Groundwater monitoring activities were performed on a semi‐annual basis and the horizontal  extent of impacted groundwater was defined.  Impacts above the 2L Standards were identified  in the deep well. In the last Groundwater Monitoring Report, it was recommended that the  UST system be tested and another quarterly sampling event be conducted prior to initiating  remediation at the site.   • Corrective Action Plan (February 23, 2016) by GRI.   As part of the CAP preparation, one air sparging well (AS‐1), one soil vapor extraction well  (SVE‐1), and two observation wells (OW‐1 and OW‐2) were installed in June 2015. Soil vapor  extraction (SVE) and air sparging (AS) pilot tests were conducted in October 2015. The CAP  recommended a combination of MMPE events to lower concentrations in affected monitoring  wells followed by natural attenuation.  If concentrations are stable and the contaminant plume  is not migrating towards known receptors, fate and transport modeling is recommended. If the  modeling determines receptors are not at risk, the site may be able to be closed through a  Notice of Residual Petroleum.     WithersRavenel Our People. Your Success.  Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 23‐0307‐EL  Groundwater Monitoring Report May 2023  7         Ground Water Monitoring and Fate & Transport Modeling Report (July 20, 2016) by GRI.   Fate and transport modeling was conducted, and the results indicated that benzene and  naphthalene would naturally attenuate in 1 to 25 years and will not reach water supply well  WSW‐3 at concentrations exceeding the Maximum Allowable Concentrations (MACs) as  specified in T15A NCAC 2L .0202. The benzene plume was predicted to migrate off‐site in  approximately 2034.  • Groundwater Monitoring Report (December 30, 2016) by GRI.  • Groundwater Monitoring Report (July 7, 2017) by GRI.  • Groundwater Monitoring Report (January 22, 2018) by GRI.  • Groundwater Monitoring Report (August 1, 2018) by GRI.  • Groundwater Monitoring Report (December 21, 2018) by GRI.  Groundwater monitoring activities were performed on a semi‐annual basis and the horizontal  extent of impacted groundwater was generally defined.  Impacts above the 2L Standards were  identified in the deep well. ORC Advanced socks were placed in monitoring wells MW‐1, MW‐ 3, MW‐4, and MW‐13 in May 2017 and removed in June 2018. However, a remaining ORC  sock was found in MW‐1 during the June 2022 sampling event. This ORC sock was removed  prior to sampling MW‐1 and discarded.   Receptor Survey Update Letter Report (April 13, 2021) by WR.   WR conducted an updated receptor survey. WR identified twenty‐one (21) water supply wells  within a 1,000‐foot (ft) radius. The nearest of these wells (WSW‐2) was located on the east‐ adjacent property and was abandoned on January 31, 2022.  WR spoke with the resident of  the property where water supply well WSW‐3 is located regarding the usage of their well.  The  resident indicated that their well is used for potable purposes.  The City of Hickory confirmed  this property does not have an active municipal water account.   Annual Monitoring Report (August 12, 2021) by WR.   WR conducted a comprehensive groundwater sampling event. Based on groundwater  elevation measurements collected on June 16, 2021, groundwater flow across the site  appeared to be to the southeast which is generally consistent with historical groundwater flow  direction. Monitoring wells MW‐1, MW‐2, MW‐3, MW‐4, and MW‐13 contained  concentrations above the 2L Standards.    Subsequent Monitoring Report (February 21, 2022) by WR.   WR supervised the installation of monitoring well MW‐14, the abandonment of water supply  well WSW‐2, and collected a groundwater sample from MW‐14. Monitoring well MW‐14 did  not contain concentrations above the 2L Standards.    Monitoring Report (August 5, 2022) by WR.   WR conducted a groundwater sampling event. Based on groundwater  elevation measurements collected on June 15, 2022, groundwater flow across the site  appeared to be to the south which is generally consistent with historical groundwater flow  direction. Monitoring wells MW‐1, MW‐2, MW‐3, MW‐4, MW‐13, and DW‐1 exhibited  concentrations exceeding the 2L Standards for one or more compounds in the samples  collected in June 2022.   WithersRavenel Our People. Your Success.  Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 23‐0307‐EL  Groundwater Monitoring Report May 2023  8       Monitoring Report (January 4, 2023) by WR.   WR conducted a groundwater sampling event. Based on groundwater  elevation measurements collected on December 1, 2022, groundwater flow across the site  appeared to be to the south which is generally consistent with historical groundwater flow  direction. Monitoring wells MW‐1, MW‐3, MW‐4, MW‐13, and DW‐1 exhibited  concentrations exceeding the 2L Standards for one or more compounds in the samples  collected in December 2022.     3.  Site Characteristics  The property is located at 3462 Springs Road NE in Hickory, Catawba County, North Carolina  (Figure 2).  The property includes a single‐story slab‐on‐grade concrete block structure, reportedly  constructed in 1987.  The site is currently occupied by a convenient store with retail petroleum  sales, Propst Superette #11, operating three 8,000‐gallon gasoline USTs and one 2,000‐gallon  kerosene UST.  The property also operates as Springs Road Sporting & Shooting.  Surface  coverings at the location include the site structure, asphalt or concrete areas (approximately 60%  of the area) and grass and wooded areas (approximately 40%). The NC PIN for the property is  372420716054, currently zoned as “HC” (Highway Commercial).  Photographs of site conditions  observed during the monitoring well installation and sampling event are included in Appendix A.       4.       Information on Receptors/Potential Receptors  During the April 2021 receptor survey, WR identified twenty‐one (21) water supply wells within  a 1,000‐foot (ft) radius. The nearest of these wells (WSW‐2) was located on the east‐adjacent  property and situated approximately 60‐ft from the source area. This well was abandoned on  January 31, 2022.  WR spoke with the resident of the property where water supply well WSW‐3  is located regarding the usage of their well.  The resident indicated that their well is used for  potable purposes.  The City of Hickory confirmed this property does not have an active municipal  water account.   Active water supply wells identified by WR include four water supply wells within 500 feet of the  source area (WSW‐3, WSW‐4, WSW‐31, and WSW‐32) and ten water supply wells between 500  and 1,000 feet of the source (WSW‐5, WSW‐6, WSW‐19, WSW‐23, WSW‐46, WSW‐50, WSW‐ 52, WSW‐57, WSW‐64, and WSW‐65).  Additional water supply wells were identified within  1,000‐ft of the source area, but these properties are connected to the City of Hickory municipal  water supply.  The Kool Park Mobile Home Park Community Well System (PWS ID NC0118108) is located  approximately 1,100 feet north (upgradient) of the source area.  Although the site is identified in  the WHP Plan, it is not located within the delineated assessment area.        Water supply well information is provided on Table B‐5A, and the locations of the wells are shown  on Figure 3.     5.       Regional and Site Geology and Hydrology  The Geologic Map of North Carolina depicts the site as being underlain by mica schist of the  Cambrian to Late Proterozoic characterized by garnet, staurolite, kyanite, or sillimanite locally;  lenses and layers of quartz schist, micaceous quartzite, calc‐silicate rock, biotite gneiss,  amphibolite, and phyllite. WithersRavenel Our People. Your Success.  Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 23‐0307‐EL  Groundwater Monitoring Report May 2023  9      According to the United States Department of Agricultural (USDA) Natural Resources  Conservation Service (NRCS) Web Soil Survey, the source area is underlain by Clifford sandy loam  (2 to 6 percent slopes).  Clifford sandy loam is well drained, found on interfluve summits, and the  parent material is saprolite derived from granite and gneiss and/or schist.  The boring logs for  monitoring wells MW‐1 through MW‐12, and DW‐1 indicated the predominant soil type at the  site is sandy silt to a depth of approximately 55 feet bgs.  Refusal was encountered during the  installation of monitoring well MW‐14 at a depth of 24 feet bgs. A rock outcrop was noted on the  steep slope to the south of MW‐14.    The 2008 CSA indicated an average hydraulic conductivity value of 1.54 x 10‐4 feet per minute  (0.22 feet per day) and an average linear flow velocity of 0.0027 feet per day or 0.99 feet per year.    SECTION D.  GROUNDWATER SAMPLING – MARCH 2023  On March 30, 2023, WR personnel mobilized to the subject property to sample monitoring wells  MW‐1, MW‐2, MW‐3, MW‐4, MW‐13, and DW‐1. In addition, WR replaced the well vault for  MW‐1. The following paragraphs describe the sampling activities and associated laboratory  analytical results.     Prior to the purging and sampling of site monitoring wells, as described below, WR personnel  opened and gauged each well targeted for sampling with an electronic LNAPL/water level  indicator to determine whether measurable LNAPL was present, and to measure the depth to  groundwater within each of the wells.  In the performance of these activities, no LNAPL was  measured within any of the site monitoring wells.      The depth to groundwater measurements in the monitoring wells gauged at the site on March 30,  2023, the site ranged from 19.38 below the top of casing (BTOC) in monitoring well MW‐3 to  20.11 feet‐BTOC in monitoring well MW‐13.  Based on groundwater elevation measurements  collected on March 30, 2023, groundwater flow across the site appears to be to the south which  is generally consistent with historical groundwater flow direction. The groundwater table contours  are depicted on Figure 4. Monitoring well construction information is included in Table B‐7.  Groundwater elevation measurement data for this and previous events are presented in Table B‐ 9.  Field notes are included in Appendix A.  Following gauging, the monitoring wells were purged and sampled using separate, disposable  polyethylene (PE) bailers for each well.  Samples from the wells were decanted into pre‐preserved  laboratory provided sample containers.  Samples collected from site monitoring wells were  submitted to Waypoint Analytical, Inc. for testing by Standard Method (SM) 6200B plus  oxygenates.    Laboratory Results  Analytical data for groundwater samples obtained from site monitoring wells on March 30, 2023,  indicated:   Monitoring wells MW‐1, MW‐2, MW‐3, MW‐4, and MW‐13 contained at least one  compound above the 2L Standard.  Groundwater analytical results for the March 2023 sampling event are summarized in Table B‐4  and shown on Figure 5. Historical groundwater analytical results are summarized in Table B‐4A.  Historical data tables covering the period between 2005 and 2014 are included in Appendix B.  WithersRavenel Our People. Your Success.  Springs Road Sporting & Shooting – NCDEQ Inc. #27716 WR Project # 23‐0307‐EL  Groundwater Monitoring Report May 2023  10      The laboratory report and chain‐of‐custody associated with these samples are included in  Appendix C.  Standard operating procedures are included in Appendix D.    Trend analysis utilizing the GSI Mann‐Kendall Toolkit indicated benzene trends are “increasing” in  monitoring wells MW‐1, MW‐2, MW‐3, MW‐4, and MW‐13. The methyl tert‐butyl ether (MTBE)  trend is “decreasing” in MW‐13, “increasing” in DW‐1, and “probably increasing” in MW‐4. There  was “no trend” identified for MTBE in monitoring wells MW‐1, MW‐2, and MW‐3. Mann‐Kendall  trend analyses are included in Appendix E.    SECTION E.  CONCLUSIONS AND RECOMMENDATIONS  This report documents the results of field activities conducted at the site for TA‐01 which included  gauging, purging, and sampling monitoring wells MW‐1, MW‐2, MW‐3, MW‐4, MW‐13, and DW‐ 1. In addition, WR replaced the well vault for MW‐1. Based on this sampling event and historical  assessment activities at the site indicate the following:     Fourteen active potable supply wells were identified within 1,000 feet of the site. Municipal  water service is available to the site and surrounding area.   Analytical results for samples collected from site monitoring wells in March 2023 showed one  or more targeted petroleum compounds in samples obtained from MW‐1, MW‐2, MW‐3, MW‐ 4, MW‐13, and DW‐1 at concentrations exceeding the 2L Standards.  No compounds were  reported at concentrations exceeding the GCLs.   Groundwater elevation data recorded on March 30, 2023 indicates a southerly groundwater  flow direction across the site.      Trend analysis utilizing the GSI Mann‐Kendall Toolkit indicated benzene trends are “increasing”  in monitoring wells MW‐1, MW‐2, MW‐3, MW‐4, and MW‐13. The methyl tert‐butyl ether  (MTBE) trend is “decreasing” in MW‐13, “increasing” in DW‐1, and “probably increasing” in  MW‐4. There was “no trend” identified for MTBE in monitoring wells MW‐1, MW‐2, and MW‐ 3.    Based on the results of assessment and monitoring activities conducted at the site in association  with this TA, WR recommends the following:   Conduct limited semi‐annual sampling of the impacted and downgradient monitoring wells and  wells with “increasing” or “probably increasing” concentration trends (MW‐1, MW‐2, MW‐3,  MW‐4, MW‐13, and DW‐1).   If concentrations exhibit stable or decreasing trends, conduct contaminant fate and transport  modeling to evaluate whether VOCs in site groundwater could potentially impact hydraulically  downgradient receptors.  WithersRavenel Our People. Your Success.      FIGURES     MM LA DRAWN BY: 04/20/23 23-0307-EL 1 SUBJECT SITE ±1.55 ACRES SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: SPRINGS ROAD SPORTING & SHOOTING (TF #27716) 3462 SPRINGS ROAD NE HICKORY, CATAWBA 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 MW-12 MW-11 MW-10 MW-3 MW-2 DW-1 MW-7 MW-6 SVE-1 AS-1 MW-1 MW-5 MW-4 MW-8 MW-9 MW-13 S MW-14 SITE BOUNDARY CANOPY W/ CURRENT UST SYSTEM DISPENSERS LEGEND SHALLOW MONITORING WELL LOCATION DEEP MONITORING WELL LOCATION S AIR SPARGE WELL LOCATION SOIL VAPOR EXTRACTION WELL LOCATION NOTES: 1.) AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT. ######1"=40 '4020 80 MMLADRAWN BY:04/20/2323-0307-EL2SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:OAK RIDGE GAS MART(TF #14451)2105 Oak Ridge RoadOak Ridge, Guilford County, NCSITE MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.com0 GRAPHIC SCALE 1 inch = 40 feet 1000 FEET500 FEETW WSW-20 W WSW-17 W WSW-23 W WSW-19 W WSW-31 W WSW-65 W WSW-32W WSW-66 W WSW-60 W WSW-57 W WSW-46 W WSW-52 W WSW-50 W WSW-59 W WSW-2 W WSW-3 W WSW-4 W WSW-5 W WSW-6 W WSW-64 W WSW-35 SITE 1"=200 '200100 400 LEGEND ACTIVE WATER SUPPLY WELL LOCATION INACTIVE WATER SUPPLY WELL LOCATION ABANDONED WATER SUPPLY WELL LOCATION PREVIOUSLY IDENTIFIED WATER SUPPLY WELL LOCATION - NO WELL OBSERVED IN 2021 NOTES: 1.) 2013 AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT. 2.) ADDITIONAL INFORMATION REGARDING WATER SUPPLY WELLS INCLUDED IN TABLE B-5A.MMLADRAWN BY:04/20/2323-0307-EL3SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:SPRINGS ROAD SPORTING &SHOOTING (TF #27716)3462 SPRINGS ROAD NEHICKORY, CATAWBA COUNTY, NCRECEPTOR MAPWithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comW W W W 0 GRAPHIC SCALE 1 inch = 200 feet MW-12 MW-11 MW-10 MW-3 MW-2 DW-1 MW-7 MW-6 SVE-1 AS-1 MW-1 MW-5 MW-4 MW-8 MW-9 MW-13 S MW-14 SITE BOUNDARY (NM) 80.25 (NM) 80.00(80.11) (80.51) (NM) (NM) (NM) (79.53) 79.75 (NM) (79.60) (79.73) (79.88) (NM) (NM) (NM) 80.50 0 1"=40 'GRAPHIC SCALE 1 inch = 40 ft. 0 4020 80 MMLADRAWN BY:04/20/2323-0307-EL4SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:SPRINGS ROAD SPORTING &SHOOTING (TF #27716)3462 SPRINGS ROAD NEHICKORY, CATAWBA COUNTY, NCGROUNDWATERELEVATION CONTOURMAP - MARCH 2023WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comLEGEND SHALLOW MONITORING WELL LOCATION DEEP MONITORING WELL LOCATION S AIR SPARGE WELL LOCATION SOIL VAPOR EXTRACTION WELL LOCATION GROUNDWATER ELEVATION CONTOUR (FT) - DASHED WHERE INFERRED GROUNDWATER ELEVATION (FT) INFERRED GROUNDWATER FLOW DIRECTION NOTES: 1.) AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT. 2.) DEEP WELL DW-1 NOT USED TO CONTRUCT CONTOURS. (79.53) MW-12 MW-11 MW-10 MW-3 MW-2 DW-1 MW-7 MW-6 SVE-1 AS-1 MW-1 MW-5 MW-4 MW-8 MW-9 MW-13 S MW-14 SITE BOUNDARY 1"=40 '4020 80 MMLADRAWN BY:04/20/2323-0307-EL5SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:SPRINGS ROAD SPORTING &SHOOTING (TF #27716)3462 SPRINGS ROAD NEHICKORY, CATAWBA COUNTY, NCGROUNDWATERANALYTICAL MAP -MARCH 2023WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comLEGEND SHALLOW MONITORING WELL LOCATION DEEP MONITORING WELL LOCATION S AIR SPARGE WELL LOCATION SOIL VAPOR EXTRACTION WELL LOCATION NOTES: 1.) AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT. 0 1 inch = 40 feet GRAPHIC SCALE MW-12 MW-11 MW-10 MW-3 MW-2 DW-1 MW-7 MW-6 SVE-1 AS-1 MW-1 MW-5 MW-4 MW-8 MW-9 MW-13 S MW-14 SITE BOUNDARY (268) (NS) (NS) (NS) (NS) (182) (168) (2,980)(NS) (NS) (465) (2.17) (NS) (NS) (NS) 1 , 0 00 1 0 1"=40 'GRAPHIC SCALE 1 inch = 40 ft. 0 4020 80 LEGEND SHALLOW MONITORING WELL LOCATION DEEP MONITORING WELL LOCATION AIR SPARGE WELL LOCATION SOIL VAPOR EXTRACTION WELL LOCATION DISSOLVED BENZENE ISOCONCENTRATION CONTOUR (UG/L) - DASHED WHERE INFERRED DISSOLVED BENZENE CONCENTRATION (UG/L) NOTES: 1.) AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT. 2.) DEEP WELL DW-1 NOT USED TO CONSTRUCT CONTOURS.MMLADRAWN BY:04/20/2323-0307-EL6SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:SPRINGS ROAD SPORTING &SHOOTING (TF #27716)3462 SPRINGS ROAD NEHICKORY, CATAWBA COUNTY, NCBENZENE ISOCONCENTRATIONCONTOUR MAP (MARCH 2023)WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comS (2.17) MW-12 MW-11 MW-10 MW-3 MW-2 DW-1 MW-7 MW-6 SVE-1 AS-1 MW-1 MW-5 MW-4 MW-8 MW-9 MW-13 S MW-14 SITE BOUNDARY (NS) (38.9) (NS) (NS) (NS)(15) (<100) (24.3) (31.1) (838) 20 (NS) (NS) (NS) (NS) (NS) 0 1"=40 'GRAPHIC SCALE 1 inch = 40 ft. 0 4020 80 LEGEND SHALLOW MONITORING WELL LOCATION DEEP MONITORING WELL LOCATION AIR SPARGE WELL LOCATION SOIL VAPOR EXTRACTION WELL LOCATION DISSOLVED MTBE ISOCONCENTRATION CONTOUR (UG/L) - DASHED WHERE INFERRED DISSOLVED MTBE CONCENTRATION (UG/L) NOTES: 1.) AERIAL OBTAINED FROM THE LOCAL COUNTY GIS DEPARTMENT. 2.) DEEP WELL DW-1 NOT USED TO CONSTRUCT CONTOURS.MMLADRAWN BY:04/20/2323-0307-EL7SCALE:FIGURE NO.:PROJECT NO.:DATE:APPROVED BY:SPRINGS ROAD SPORTING &SHOOTING (TF #27716)3462 SPRINGS ROAD NEHICKORY, CATAWBA COUNTY, NCMTBE ISOCONCENTRATIONCONTOUR MAP (MARCH 2023)WithersRavenelEngineers | Planners | Surveyors115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340license #: F-1479 | www.withersravenel.comS (31.1) WithersRavenel Our People. Your Success.    TABLES       UST IDNumberCurrent/LastContentsPreviousContentsCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofUSTWas release associated with UST System? (Y/N)1 Kerosene Not Listed 2,000 Single Wall Steel 96" x 21'4"Fiberglass Reinforced Plastic4/30/1988 Active Y2 Gasoline Not Listed 8,000 Single Wall Steel 96" x 21'4"Fiberglass Reinforced Plastic4/30/1988 Active Y3 Gasoline Not Listed 8,000 Single Wall Steel 96" x 21'4"Fiberglass Reinforced Plastic4/30/1988 Active Y4 Gasoline Not Listed 8,000 Single Wall Steel 64" x 12'0"Fiberglass Reinforced Plastic4/30/1988 Active YAST IDNumberCurrent/LastContentsPreviousContentsCapacity(in gallons)ConstructionDetailsTankDimensions (diameter x length) (ft)Description ofAssociatedPiping & PumpsDate of TankInstallationStatus ofASTWas release associated with AST System? (Y/N)Facility IDMaterialReleasedDateofReleaseFacility ID #00‐0‐0000033464Kerosene and GasolineDiscovered 5/4/2004Notes:1)Table B‐1Site History:  UST/AST System & Other Release InformationSprings Road Sporting & ShootingIncident Number: 27716Facility ID # 00‐0‐0000033464Information shown hereon from NCDEQ Laserfiche File System, NCDEQ UST Systems Databases and NCDEQ Permits & Inspections Branch Facility Operating Permits Database, and the September 16, 2008 Comprehensive Site Assessment prepared by Allied Environmental Services, PLLC.3462 Springs Road NEHickory, Catawba County, North CarolinaASTs have not been documented at the site.Description of ReleaseA Phase II Environmental Site Assessment identified impacts to groundwater were noted.  These findings were reported to the NCDEQ and a site check was required.  The 2005 site check identified soil impacts exceeding the NCDEQ Action Levels and a release was attributed to the kerosene UST system.  Monitoring wells were installed as part of the subsequent Limited Site Assessment and Comprehensive Site Assessment activities, and in 2012, gasoline compounds were identified in groundwater and another site check was required. A soil concentration exceeding the NCDEQ Action Level was identified in one of the 26 borings.  Page 1 of 1 CalculatedBenzenen‐Butylbenzenesec‐ButylbenzeneEthylbenzeneDi‐isopropyl etherIsopropylbenzene2‐HexanoneMethyl tert‐butyl etherNaphthalenen‐PropylbenzeneTert‐amyl AlcoholTert‐butyl alcoholToluene1,2,4‐Trimethylbenzene1,3,5‐TrimethylbenzeneTotal Xylenes71‐43‐2 104‐51‐135‐98‐100‐41‐108‐20‐98‐82‐8 591‐78‐1634‐04‐91‐20‐3 103‐65‐75‐85‐475‐65‐0 108‐88‐95‐63‐6 108‐67‐NAMW‐13/30/20232,980<50.0 <50.087.9<50.0 <50.0 <100 <100 <100 <50.08,680 2,150 415 50.7<50.0288MW‐23/30/2023465<5.00 <5.0019.2 7.51<5.00 <10.031.1 29.8<5.001,270 1,640 10.8 17.1<5.0052.6MW‐33/30/2023168<0.5000.51 2.08 12 0.844<1.0024.3 1.06<0.500280 162 3.09 4.39 2.87 9.39MW‐43/30/2023268 0.6 0.947 56.2 0.98 6.38<1.0038.9<1.0014.1 361 196 16.3 34.3 32.3 72.2MW‐133/30/2023182<5.00 <5.0042.1 7.65<5.0013.3 15 301 6.69 270 104 93.9 169 53 362DW‐13/30/20232.17<0.500 <0.500 <0.50023.9<0.500 <1.00838<1.00 <0.50069.6<10.0 <0.500 <0.500 <0.500 <0.5001 70 70 600 70 70 40 20 6 70 40 10 600 400 4005005,000 5,900 8,800 80,000 70,000 30,500 40,000 20,000 6,000 26,100 40,000 10,000 260,000 28,500 24,10050,000Notes:1)2)3)NC 2L Standard - North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02LResultResultResult= Result Exceeds NC Gross Contaminant Level for Groundwater NC 2L Standard (μg/L)GCLs for Groundwater (μg/L)All results provided in ug/L (micrograms per liter) or parts per billionCompounds 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. = Result Exceeds Laboratory Detection Limits= Result Exceeds NC 2L Standard for GroundwaterSM6200BSample ID CollectedTABLE B‐4SUMMARY OF GROUNDWATER ANALYTICAL RESULTSSprings Road Sporting & ShootingIncident Number: 277163462 Springs Road NEHickory, Catawba County, North CarolinaLaboratory MethodPage 1 of 1 CalculatedAcetoneBenzenen‐Butylbenzenesec‐ButylbenzeneChloroformEthylbenzeneDi‐isopropyl etherIsopropylbenzenep‐Isopropyltoluene2‐Hexanone2‐Butanone (MEK)Methyl tert‐butyl ether4‐Methyl‐2‐pentanone (MIBK)Naphthalenen‐PropylbenzeneTert‐amyl AlcoholTert‐amyl methyl etherTert‐butyl alcoholTetrachloroetheneToluene1,2,3‐Trichlorobenzene1,2,4‐Trichlorobenzene1,2,4‐Trimethylbenzene1,3,5‐TrimethylbenzeneTotal Xylenes67‐64‐171‐43‐2 104‐51‐135‐98‐67‐66‐3 100‐41‐108‐20‐98‐82‐899‐87‐6 591‐78‐78‐93‐3 1634‐04‐108‐10‐91‐20‐3 103‐65‐75‐85‐4 994‐05‐75‐65‐0 127‐18‐108‐88‐87‐61‐6 120‐82‐95‐63‐6 108‐67‐NA6/24/2015NR152NR NR NR5.9 5.3NR NR NR NR4.6NR0.93NR NR NR NR NR9.8NR NR NR NR33.16/2/2016NR153NR NR NR5.2 3.4NR NR NR NR5.3NR1.2NR NR NR NR NR12.5NR NR NR NR35.612/9/2016NR40.1NR NR NR0.91 1.4NR NR NR NR1.9NR <0.13 NR NR NR NR NR1NR NR NR NR7.5May 20176/19/2017NR33.5NR NR <0.501.1 1.7NR NR NR NR2.5NR <0.13 NR NR NR NR NR2.1NR NR NR NR6.012/18/2017NR0.66NR NR <0.50 <0.131.2NR NR NR NR5.5NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.256/25/2018NR30.7NR NR <0.501.5 1.4NR NR NR NR1.8NR0.20 JNR NR NR NR NR2.7NR NR NR NR7.312/3/2018NR64.3NR NR <2.52.6 1.2 JNR NR NR NR1.5 JNR0.67 JNR1,600NR284NR5.6NR NR NR NR186/16/2021<1001,920<5.00 <5.00 <5.0060.8 19.7<5.00 <5.00 <10.0 <50.0 <10.018.5<10.0 <5.00 <100 <1002,360<5.00280<5.00 <5.0029.6 13.5 1596/15/2022<10001,120<50.0 <50.0 <50.057<50.0 <50.0 <50.0 <100 <500 <100 <100 <100 <50.07250<10001,360<50.0211<50.0 <50.0 <50.0 <50.017412/1/2022<1002,300<5.00 <5.00 <5.0066.3 9.3<5.00 <5.0044.2 331<10.049.5 96.1 6.11<10000 <1001,600<5.00311<5.00 <5.0051.6 17.4 2593/30/2023<10002,980<50.0 <50.0 <50.087.9<50.0 <50.0 <50.0 <100 <500 <100 <100 <100 <50.08680<10002,150<50.0415<50.0 <50.050.7<50.02886/24/2015NR <0.17 NR NR NR <0.15 NR NR NR NR NR0.92NR <0.12 NR NR NR NR NR <0.17 NR NR NR NR <0.436/2/2016NR <0.13 NR NR NR <0.13 NR NR NR NR NR <0.13 NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/16/2021<10.09.5<0.500 <0.500 <0.5001.79 3.72 0.53<0.500 <1.00 <5.0029.9<1.001.18<0.500 <10.0 <10.0423<0.500 <0.500 <0.500 <0.5001.88<0.5006.286/15/2022<10.0419 0.852 1.7<0.50018.7 5.42 2.83 1.35 2.41<5.0033 2.27 15 3.62 2130<10.01540<0.5009.61<0.500 <0.50025.6 2.78 63.23/30/2023<100465<5.00 <5.00 <5.0019.2 7.51<5.00 <5.00 <10.0 <50.031.1<10.029.8<5.001270<1001640<5.0010.8<5.00 <5.0017.1<5.0052.66/24/2015NR6.4NR NR NR0.17 J 98.9NR NR NR NR372NR0.49 JNR NR NR NR NR0.28 JNR NR NR NR0.96 J6/2/2016NR95.3NR NR NR1.6 0.53NR NR NR NR16.3NR <0.13 NR NR NR NR NR0.25 JNR NR NR NR7.412/9/2016NR7.6NR NR NR <0.1362.5NR NR NR NR272NR0.24 JNR NR NR NR NR0.20 JNR NR NR NR0.91 JMay 20176/19/2017NR1NR NR <0.50 <0.1317.3NR NR NR NR55.7NR0.14 JNR NR NR NR NR1.4NR NR NR NR <0.2512/18/2017NR0.64NR NR <0.500.25 J 35.4NR NR NR NR218NR0.15 JNR NR NR NR NR0.54NR NR NR NR1.76/25/2018NR0.70NR NR <0.50 <0.1349.1NR NR NR NR213NR0.36 JNR NR NR NR NR <0.13 NR NR NR NR <0.2512/3/2018NR2.0NR NR <0.50 <0.1354.6NR NR NR NR221NR0.54NR1020NR500NR0.44 JNR NR NR NR0.77 J6/16/2021<10.086.7<0.500 <0.500 <0.50010.3 23.5 0.651<0.500 <1.00 <5.0048.7<1.005.3<0.500 <10.013.6 125<0.5003.41<0.500 <0.50019.4 9.23 266/15/2022<10.06.18<0.500 <0.500 <0.500 <0.5005.04<0.500 <0.500 <1.00 <5.0016.3<1.00 <1.00 <0.500257<10.0302<0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.50012/1/2022<10.067.4<0.500 <0.500 <0.5001.17 9.55 0.678<0.500 <1.00 <5.0021.4<1.00 <1.00 <0.500 <1000 <10.099.9<0.5001.42<0.500 <0.5002.67 1.34 4.973/30/2023<10.0168<0.5000.51<0.5002.08 12 0.844<0.500 <1.00 <5.0024.3<1.001.06<0.500280<10.0162<0.5003.09<0.500 <0.5004.39 2.87 9.396000 1 70 70 70 600 70 70 25 40 4000 20 100 6 70 40 128 10 0.7 600 NL 70 400 4005006,000,000 5,000 5,900 8,800 70,000 80,000 70,000 30,500 11,700 40,000 4,000,000 20,000 100,000 6,000 26,100 40,000 128,000 10,000 700 260,000 NL 24,500 28,500 24,10050,000Notes:1)Result2)Result3)Result4)TABLE B‐4ASUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL RESULTSSprings Road Sporting & ShootingIncident Number: 277163462 Springs Road NEHickory, Catawba County, North CarolinaSM6200BSample ID CollectedCompounds 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 02LGCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for GroundwaterMW‐2= Result Exceeds NC Gross Contaminant Level for GroundwaterLaboratory Method= Result Exceeds Laboratory Detection LimitsORC Socks Installed NC 2L Standard (μg/L)GCLs for Groundwater (μg/L)= Result Exceeds NC 2L Standard for GroundwaterORC Socks InstalledMW‐1All results provided in ug/L (micrograms per liter) or parts per billionMW‐3Page 1 of 4 CalculatedAcetoneBenzenen‐Butylbenzenesec‐ButylbenzeneChloroformEthylbenzeneDi‐isopropyl etherIsopropylbenzenep‐Isopropyltoluene2‐Hexanone2‐Butanone (MEK)Methyl tert‐butyl ether4‐Methyl‐2‐pentanone (MIBK)Naphthalenen‐PropylbenzeneTert‐amyl AlcoholTert‐amyl methyl etherTert‐butyl alcoholTetrachloroetheneToluene1,2,3‐Trichlorobenzene1,2,4‐Trichlorobenzene1,2,4‐Trimethylbenzene1,3,5‐TrimethylbenzeneTotal Xylenes67‐64‐171‐43‐2 104‐51‐135‐98‐67‐66‐3 100‐41‐108‐20‐98‐82‐899‐87‐6 591‐78‐78‐93‐3 1634‐04‐108‐10‐91‐20‐3 103‐65‐75‐85‐4 994‐05‐75‐65‐0 127‐18‐108‐88‐87‐61‐6 120‐82‐95‐63‐6 108‐67‐NATABLE B‐4ASUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL RESULTSSprings Road Sporting & ShootingIncident Number: 277163462 Springs Road NEHickory, Catawba County, North CarolinaSM6200BSample ID CollectedLaboratory Method6/24/2015NR18.3NR NR NR0.36 JNR NR NR NR NR2.0NR <0.12 NR NR NR NR NR <0.17 NR NR NR NR0.99 J6/2/2016NR5.6NR NR NR <0.13 NR NR NR NR NR245NR0.20 JNR NR NR NR NR0.58NR NR NR NR1.4 J12/9/2016NR14.6NR NR NR <0.13 NR NR NR NR NR15.9NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.31May 20176/19/2017NR12.2NR NR <0.500.22 JNR NR NR NR NR9.2NR <0.13 NR NR NR NR NR0.61NR NR NR NR0.75 J12/18/2017NR32NR NR <0.500.30 JNR NR NR NR NR9.2NR <0.13 NR NR NR NR NR1.10NR NR NR NR0.95 J6/25/2018NR2.6NR NR <0.50 <0.13 NR NR NR NR NR0.96NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR0.27 J12/3/2018NR125NR NR <2.56.3NR NR NR NR NR25.7NR <0.63 NR122NR186NR 0.89 JNRNRNRNR206/16/2021<10.026.1<0.500 <0.500 <0.5002.17<0.500 <0.500 <0.500 <1.00 <5.004.39<1.00 <1.00 <0.500 <10.0 <10.025.2<0.5001.03<0.500 <0.5000.739<0.5007.046/15/2022<10.0151<0.5000.637<0.50041.4<0.5004.49<0.500 <1.00 <5.0028.4<1.00 <1.008.91 269<10.0149<0.50013.1<0.500 <0.50015.7 21.6 4812/1/2022<100177<5.00 <5.00 <5.0035<5.00 <5.00 <5.00 <10.0 <50.031.5<10.0 <10.06.58 253<100 <100 <5.0019<5.00 <5.0017.5 12.1 61.23/30/2023<10.0268 0.6 0.947<0.50056.2 0.98 6.38<0.500 <1.00 <5.0038.9<1.00 <1.0014.1 361<10.0196<0.50016.3<0.500 <0.50034.3 32.3 72.26/24/2015NR <0.17 NR NR NR <0.15 <0.16 NR NR NR NR <0.16 NR <0.12 NR NR NR NR NR <0.17 NR NR NR NR <0.436/2/2016NR <0.13 NR NR NR <0.13 <0.13 NR NR NR NR <0.13 NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/16/2021<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/24/2015NR <0.17 NR NR NR <0.15 <0.16 NR NR NR NR <0.16 NR <0.12 NR NR NR NR NR <0.17 NR NR NR NR <0.436/2/2016NR <0.13 NR NR NR <0.13 <0.13 NR NR NR NR <0.13 NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.3112/9/2016NR <0.13 NR NR NR <0.13 <0.13 NR NR NR NR <0.13 NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/19/2017NR <0.13 NR NR <0.50 <0.13 <0.13 NR NR NR NR <0.13 NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.256/16/2021<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/15/2022<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/24/2015NR <0.17 NR NR NR <0.15 <0.16 NR NR NR NR <0.16 NR <0.12 NR NR NR NR NR <0.17 NR NR NR NR <0.436/2/2016NR <0.13 NR NR NR <0.13 <0.13 NR NR NR NR <0.13 NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/16/2021<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006000 1 70 70 70 600 70 70 25 40 4000 20 100 6 70 40 128 10 0.7 600 NL 70 400 4005006,000,000 5,000 5,900 8,800 70,000 80,000 70,000 30,500 11,700 40,000 4,000,000 20,000 100,000 6,000 26,100 40,000 128,000 10,000 700 260,000 NL 24,500 28,500 24,10050,000Notes:1)Result2)Result3)Result4)MW‐5MW‐6MW‐7= Result Exceeds Laboratory Detection Limits= Result Exceeds NC 2L Standard for GroundwaterNC 2L Standard - North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L= Result Exceeds NC Gross Contaminant Level for GroundwaterAll results provided in ug/L (micrograms per liter) or parts per billion NC 2L Standard (μg/L)GCLs for Groundwater (μg/L)GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for GroundwaterCompounds 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. ORC Socks InstalledMW‐4Page 2 of 4 CalculatedAcetoneBenzenen‐Butylbenzenesec‐ButylbenzeneChloroformEthylbenzeneDi‐isopropyl etherIsopropylbenzenep‐Isopropyltoluene2‐Hexanone2‐Butanone (MEK)Methyl tert‐butyl ether4‐Methyl‐2‐pentanone (MIBK)Naphthalenen‐PropylbenzeneTert‐amyl AlcoholTert‐amyl methyl etherTert‐butyl alcoholTetrachloroetheneToluene1,2,3‐Trichlorobenzene1,2,4‐Trichlorobenzene1,2,4‐Trimethylbenzene1,3,5‐TrimethylbenzeneTotal Xylenes67‐64‐171‐43‐2 104‐51‐135‐98‐67‐66‐3 100‐41‐108‐20‐98‐82‐899‐87‐6 591‐78‐78‐93‐3 1634‐04‐108‐10‐91‐20‐3 103‐65‐75‐85‐4 994‐05‐75‐65‐0 127‐18‐108‐88‐87‐61‐6 120‐82‐95‐63‐6 108‐67‐NATABLE B‐4ASUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL RESULTSSprings Road Sporting & ShootingIncident Number: 277163462 Springs Road NEHickory, Catawba County, North CarolinaSM6200BSample ID CollectedLaboratory Method6/24/2015NR <0.17 NR NR NR <0.15 <0.16 NR NR NR NR <0.16 NR <0.12 NR NR NR NR NR <0.17 NR NR NR NR <0.436/2/2016NR <0.13 NR NR NR <0.13 <0.13 NR NR NR NR <0.13 NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/16/2021<10.00.926<0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/15/2022<10.00.665<0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/24/2015NR <0.17 NR NR NR <0.150.62NR NR NR NR3.9NR0.17 JNR NR NR NR NR <0.17 NR NR NR NR <0.436/2/2016NR <0.13 NR NR NR <0.13 <0.13 NR NR NR NR <0.13 NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/16/2021<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/24/2015NR <0.17 NR NR NR <0.15 <0.16 NR NR NR NR0.34 JNR <0.12 NR NR NR NR NR <0.17 NR NR NR NR <0.436/2/2016NR <0.13 NR NR NR <0.130.47 JNR NR NR NR2.3NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/16/2021<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/24/2015NR <0.17 NR NR NR <0.151.1NR NR NR NR1NR <0.12 NR NR NR NR NR <0.17 NR NR NR NR <0.436/2/2016NR <0.13 NR NR NR <0.13 <0.13 NR NR NR NR0.43 JNR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/16/2021<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/24/2015NR <0.17 NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR6/2/2016NR <0.13 NR NR NR <0.130.51NR NR NR NR0.49 JNR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/16/2021<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/15/2022<10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <1.00 <5.00 <1.00 <1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/24/2015NR14.1NR NR NR11 109NR NR NR NR160NR4.0NR NR NR NR NR22.2NR NR NR NR1146/2/2016NR14.1NR NR NR23.8 79.7NR NR NR NR119NR12.3NR NR NR NR NR48.7NR NR NR NR18112/9/2016NR33.7NR NR NR89 48.1NR NR NR NR72.7NR11.1NR NR NR NR NR303NR NR NR NR561May 20176/19/2017NR3.8NR NR <0.505.6 45.4NR NR NR NR66.4NR2.00NR NR NR NR NR14.6NR NR NR NR83.612/18/2017NR9NR NR <0.507.8 85.3NR NR NR NR149NR1.7NR NR NR NR NR28.2NR NR NR NR94.86/25/2018NR16.4NR NR <0.5014.7 78.4NR NR NR NR153NR11.8NR NR NR NR NR48.2NR NR NR NR17112/3/2018NR29.2NR NR <2.537.6 83NR NR NR NR158NR43.9NR1390NR339NR75.4NR NR NR NR3906/16/202143.2 26.7 1.48 0.907<0.50042.3 14 2.15 1.3 35.8 40.3 28.6 18.6 543 7.64<10.019.2 154<0.500132<0.500 <0.500167 67.2 3726/15/2022<10.040.9<0.500 <0.500 <0.5005.91 2.4 0.73<0.500 <1.00 <5.004.96<1.0016.2 1.16 98.8<10.027.5<0.50014.9<0.500 <0.50040 17.3 79.712/1/2022<10075.3<5.00 <5.00 <5.006.76<5.00 <5.00 <5.00 <10.0 <50.0 <10.0 <10.029.2<5.00 <100 <100 <100 <5.0014.2<5.00 <5.0041.8 13.3 77.93/30/2023<100182<5.00 <5.00 <5.0042.1 7.65<5.00 <5.0013.3<50.015<10.0301 6.69 270<100104<5.0093.9<5.00 <5.00169 53 3626000 1 70 70 70 600 70 70 25 40 4000 20 100 6 70 40 128 10 0.7 600 NL 70 400 4005006,000,000 5,000 5,900 8,800 70,000 80,000 70,000 30,500 11,700 40,000 4,000,000 20,000 100,000 6,000 26,100 40,000 128,000 10,000 700 260,000 NL 24,500 28,500 24,10050,000Notes:1)Result2)Result3)Result4)= Result Exceeds NC Gross Contaminant Level for Groundwater= Result Exceeds NC 2L Standard for Groundwater= Result Exceeds Laboratory Detection LimitsNC 2L Standard - North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02LMW‐11ORC Socks InstalledMW‐13MW‐12GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater NC 2L Standard (μg/L)GCLs for Groundwater (μg/L)All results provided in ug/L (micrograms per liter) or parts per billionMW‐8MW‐9Compounds 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. MW‐10Page 3 of 4 CalculatedAcetoneBenzenen‐Butylbenzenesec‐ButylbenzeneChloroformEthylbenzeneDi‐isopropyl etherIsopropylbenzenep‐Isopropyltoluene2‐Hexanone2‐Butanone (MEK)Methyl tert‐butyl ether4‐Methyl‐2‐pentanone (MIBK)Naphthalenen‐PropylbenzeneTert‐amyl AlcoholTert‐amyl methyl etherTert‐butyl alcoholTetrachloroetheneToluene1,2,3‐Trichlorobenzene1,2,4‐Trichlorobenzene1,2,4‐Trimethylbenzene1,3,5‐TrimethylbenzeneTotal Xylenes67‐64‐171‐43‐2 104‐51‐135‐98‐67‐66‐3 100‐41‐108‐20‐98‐82‐899‐87‐6 591‐78‐78‐93‐3 1634‐04‐108‐10‐91‐20‐3 103‐65‐75‐85‐4 994‐05‐75‐65‐0 127‐18‐108‐88‐87‐61‐6 120‐82‐95‐63‐6 108‐67‐NATABLE B‐4ASUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL RESULTSSprings Road Sporting & ShootingIncident Number: 277163462 Springs Road NEHickory, Catawba County, North CarolinaSM6200BSample ID CollectedLaboratory Method2/1/2022<10.0 <0.500 <0.500 <0.5001.21<0.500 <0.500 <0.500 <0.500 <1.00 <5.001.62<1.00 <1.00 <0.500 <10.0 <10.0 <10.00.567<0.5004.4 12.1<0.500 <0.500 <0.5006/15/2022<10.0 <0.500 <0.500 <0.5000.716<0.500 <0.500 <0.500 <0.500 <1.00 <5.001.26<1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/24/2015NR <0.17 NR NR NR <0.153.7NR NR NR NR10.5NR <0.12 NR NR NR NR NR <0.17 NR NR NR NR <0.436/2/2016NR0.20 JNR NR NR <0.135.3NR NR NR NR108NR <0.63 NR NR NR NR NR <0.13 NR NR NR NR <0.3112/9/2016NR0.55NR NR NR <0.138.2NR NR NR NR270NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.316/19/2017NR <0.13 NR NR <0.50 <0.136.4NR NR NR NR9.6NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.2512/18/2017NR0.47 JNR NR <0.50 <0.136.7NR NR NR NR123NR <0.13 NR NR NR NR NR <0.13 NR NR NR NR <0.256/25/2018NR2.0NR NR <0.50 <0.137.3NR NR NR NR188NR0.18 JNR NR NR NR NR <0.13 NR NR NR NR0.47 J6/16/2021<10.00.771<0.500 <0.500 <0.500 <0.50021.7<0.500 <0.500 <1.00 <5.001,180<1.00 <1.00 <0.500 <10.0 <10.0 <1000 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/15/2022<10.00.625<0.500 <0.500 <0.500 <0.50011.2<0.500 <0.500 <1.00 <5.00701<1.00 <1.00 <0.500 <10.0 <10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.50012/1/2022<100 <5.00 <5.00 <5.00 <5.00 <5.0023.3<5.00 <5.00 <10.0 <50.01,120<10.0 <10.0 <5.00361<100333<5.00 <5.00 <5.00 <5.00 <5.00 <5.00 <5.003/30/2023<10.02.17<0.500 <0.500 <0.500 <0.50023.9<0.500 <0.500 <1.00 <5.00838<1.00 <1.00 <0.50069.6<10.0 <10.0 <0.500 <0.500 <0.500 <0.500 <0.500 <0.500 <0.5006/7/2012NR <1.0 <1.0 <1.0 NR <1.0 <1.0 <1.0 <1.0 NR NR <1.0 NR <5.0 <1.0 NR NR NR NR <5.0 NR NR <1.0 <1.0 <3.06/11/2013NR <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 NR NR <0.5 NR <0.5 <0.5 NR NR NR NR <0.5 NR NR <0.5 <0.5 <1.06/7/2012NR <1.0 <1.0 <1.0 NR <1.0 <1.0 <1.0 <1.0 NR NR <1.0 NR <5.0 <1.0 NR NR NR NR <5.0 NR NR <1.0 <1.0 <3.06/11/2013NR <0.5 <0.5 <0.5 NR <0.5 <0.5 <0.5 <0.5 NR NR <0.5 NR <0.5 <0.5 NR NR NR NR <0.5 NR NR <0.5 <0.5 <1.06000 1 70 70 70 600 70 70 25 40 4000 20 100 6 70 40 128 10 0.7 600 NL 70 400 4005006,000,000 5,000 5,900 8,800 70,000 80,000 70,000 30,500 11,700 40,000 4,000,000 20,000 100,000 6,000 26,100 40,000 128,000 10,000 700 260,000 NL 24,500 28,500 24,10050,000Notes:1)Result2)Result3)Result4)MW‐14DW‐1WSW‐3(3518 Springs Rd. NE)WSW‐46 (2805 34th St. Pl. NE) NC 2L Standard (μg/L)GCLs for Groundwater (μg/L)GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for GroundwaterAll results provided in ug/L (micrograms per liter) or parts per billion= Result Exceeds Laboratory Detection LimitsCompounds 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. = Result Exceeds NC 2L Standard for GroundwaterNC 2L Standard - North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L= Result Exceeds NC Gross Contaminant Level for GroundwaterPage 4 of 4 Latitude LongitudeWSW‐2 372420718023 3506 Springs Road NE Anita Isenhour and David Smith2055 15th Ave NEHickory, NC 28601‐2927Abandoned 1/31/2022 Active account 69 20‐69 NA Downgradient 35.765006‐81.266299WSW‐3 372420709989 3518 Springs Road NE Killian Rentals LLC2754 34th St. Circle NEHickory, NC 28601‐7746Potable ‐ No municipal account; resident confirmed well usage; well observedNo active account 32 Unknown 325 Upgradient 35.765513‐81.265572WSW‐4 372420811031 3524 Springs Road NE Killian Rentals LLC3554 Springs Rd. NEHickory, NC 28601‐7782Assumed Potable ‐ No municipal account No active account 36 Unknown 400 Upgradient 35.765524‐81.265299WSW‐5 372420812246 3540 Springs Road NE Killian Rentals LLC3554 Springs Rd. NEHickory, NC 28601‐7782Assumed Potable ‐ No municipal account; well observed during 2021 receptor surveyNo active account 32 Unknown 590 Upgradient 35.765889‐81.264768WSW‐6 372420814384 3560 Springs Road NE Dale and Priscilla Crouch3554 Springs Rd. NEHickory, NC 28601‐7782Assumed Potable ‐ No municipal account; well observed during 2021 receptor surveyNo active account Unknown Unknown 825 Upgradient 35.765717‐81.263898WSW‐19 372420813609 3555 Springs Road NE Alex Little Enterprises LLC809 Lenoir‐Rhyne Blvd. SEHickory, NC 28602‐4128Assumed Potable ‐ No municipal account No active account 37 Unknown 800 Upgradient 35.766536‐81.264320WSW‐23 372420810418 3521 Springs Road NE Cam & Cole Properties LLC3531 Springs Rd. NEHickory, NC 28601‐7782Assumed Potable ‐ No municipal account No active account Unknown Unknown 600 Upgradient 35.766359‐81.265136WSW‐31 372419714360 3453 Springs Road NEPerry L. Benfield Living Trust ‐ Trust A2534 44th Ave NEHickory, NC 28601‐7442Assumed Potable ‐ No municipal account No active account 51 Unknown 320 Crossgradient 35.765721‐81.267259WSW‐32 372419712252 3445 Springs Road NE Kenneth and Beverly Lafone3658 Drew Farmer Rd.La Grange, NC 28551‐8717Assumed Potable ‐ No municipal account; well observed during 2021 receptor surveyNo active account 50 Unknown 410 Crossgradient 35.765501‐81.267919WSW‐46 372420705632 2805 34th St. Pl. NE Cynthia Mason2805 34th St. Pl. NEHickory, NC 28601‐7745Potable ‐ No municipal account; homeowner confirmed well usageNo active account Unknown Unknown 550 Downgradient 35.763806‐81.266989WSW‐50 372420800560 2770 34th St. Cir. NE Killian Rentals LLC3554 Springs Rd. NEHickory, NC 28601‐7782Assumed Potable ‐ No municipal account; water meter observed during 2021 receptor surveyNo active account Unknown Unknown 790 Downgradient 35.763214‐81.265659WSW‐52 372420706353 2750 34th St. Pl. NE Gary Davis2750 34th St. Pl. NEHickory, NC 28601‐7744Assumed Potable ‐ No municipal account; well observed during 2021 receptor surveyNo active account Unknown Unknown 750 Downgradient 35.763155‐81.266631WSW‐57 372419702622 3408 Springs Rd. NE Cheryl Tony1315 36th Ave. Dr. NEHickory, NC 28601‐8267Assumed Potable ‐ No municipal account; water meter observed during 2021 receptor surveyNo active account Unknown Unknown 725 Downgradient 35.763929‐81.268368WSW‐60 372419608888 3291 Kool Park Rd. NE TVT Partners LLCP.O. Box 1990Hickory, NC 28603‐1990Connected to municipal water; well observed during 2021 receptor surveyActive account Unknown Unknown 875 Downgradient 35.764207‐81.269325WSW‐64 372419617399 3176 28th Ave. Dr. NE Harvey and Jeanne Lafone3176 28th Ave. Dr. NEHickory, NC 28601‐7731Assumed Potable ‐ No municipal account No active account Unknown Unknown 810 Crossgradient 35.765998‐81.269337WSW‐65 372419619568 3175 28th Ave. Dr. NEBarbara W. Bolton Revocable Declaration of Trust910 Highland Ave.Hickory, NC 28601‐4056Assumed Potable ‐ No municipal account; well observed during 2021 receptor surveyNo active account Unknown Unknown 800 Crossgradient 35.766533‐81.269004WSW‐66 372419712200 3437 Springs Road NEPerry L. Benfield Living Trust ‐ Trust A2534 44th Ave NEHickory, NC 28601‐7442Connected to municipal water;  well observed during 2021 receptor surveyActive account Unknown Unknown 460 Crossgradient 35.765500‐81.268098WSW‐2* 372420718023 3510 Springs Road NE Anita Isenhour and David Smith2055 15th Ave NEHickory, NC 28601‐2927Connected to municipal water; no well observed during 2021 receptor surveyActive account 69 Unknown 60 Crossgradient 35.765167‐81.266329WSW‐17* 372420814732 3569 Springs Road NE Fruth Properties LLC706 3rd St. NEConover, NC 28613‐1791Connected to municipal water; no well observed during 2021 receptor surveyActive account Unknown Unknown 925 Upgradient 35.766700‐81.263704WSW‐20* 372420821428 3551 Springs Road NE Springs Road Drive In3451 Springs Rd. NEHickory, NC 28601‐7781Connected to municipal water; no well observed during 2021 receptor surveyActive account Unknown Unknown 775 Upgradient 35.767250‐81.265594WSW‐35* 372419619340 3210 28th Ave. Dr. NE Elizabeth Vue3210 28th Ave. Dr. NEHickory, NC 28601‐7732Connected to municipal water; no well observed during 2021 receptor surveyActive account Unknown Unknown 720 Crossgradient 35.765722‐81.268944WSW‐59* 372419704970 3450 Springs Rd. NE Gaynell B. Griffin LFI886 Lake Vista LaneTaylorsville, NC 28681‐8017Connected to municipal water; no well observed during 2021 receptor surveyActive account Unknown Unknown 300 Downgradient 35.764862‐81.267545       1.)  Well location addresses and property owner information was obtained from the Catawba County GIS Department, accessed April 24, 3023.  Well ID Property AddressNotes: Well CoordinatesLocation Relative to Groundwater FlowProperty OwnerWell Screen Interval(feet)Well UseWell Distance from Source Area(feet)ParcelNumberWell Depth(feet)Property Owner AddressMunicipal Connection (verified with City of Hickory Public Utilities)       2.)  * = Information regarding the water supply wells' presence and location was obtained from historical reports produced by others, WR did not observe evidence of a well and property is connected to municipal water.TABLE B‐5APUBLIC & PRIVATE WATER SUPPLY WELL INFORMATIONSprings Road Sporting & Shooting3462 Springs Road NEHickory, Catawba County, North CarolinaIncident Number: 27716Page 1 of 1 MW‐1 8/3/2005 2 40.0 20.0 20‐ 40 100.00 3/30/2023 19.89 NM 80.11MW‐2 9/12/2005 2 35.0 15.0 15‐ 35 99.45 3/30/2023 19.72 NM 79.73MW‐3 9/13/2005 2 35.0 15.0 15‐ 35 99.26 3/30/2023 19.38 NM 79.88MW‐4 9/13/2005 2 35.0 15.0 15‐ 35 100.58 3/30/2023 20.07 NM 80.51MW‐5 6/11/2008 2 35.0 15.0 15‐ 35 101.48 NM NM NM NMMW‐6 6/12/2008 2 35.0 15.0 15‐ 35 99.03 NM NM NM NMMW‐7 6/12/2008 2 35.0 15.0 15‐ 35 96.54 NM NM NM NMMW‐8 6/12/2008 2 35.0 15.0 15‐ 35 100.66 NM NM NM NMMW‐9 6/12/2008 2 35.0 15.0 15‐ 35 100.07 NM NM NM NMMW‐10 6/23/2008 2 35.0 15.0 15‐ 35 100.31 NM NM NM NMMW‐11 6/23/2008 2 35.0 15.0 15‐ 35 99.68 NM NM NM NMMW‐12 6/23/2008 2 35.0 15.0 15‐ 35 99.64 NM NM NM NMMW‐13 6/4/2013 2 35.0 15.0 15‐ 35 99.64 3/30/2023 20.11 NM 79.53MW‐14 1/31/2022 2 30.0 15.0 15‐ 30 99.50 NM NM NM NMDW‐1 9/11‐12/2005 2 55.0 50.0 50‐ 55 99.10 3/30/2023 19.50 NM 79.60SVE‐1 6/18/2015 4 15.0 5.0 5‐ 15 NS NM NM NM NMAS‐1 6/18/2015 2 50.0 45.0 45‐ 50 NS NM NM NM NMOW‐1 6/18/2015 2 35.0 15.0 15‐ 35 NS NM NM NM NMOW‐2 6/18/2015235.0 15.0 15‐ 35 NS NM NM NM NM3462 Springs Road NEHickory, Catawba County, North CarolinaTABLE B-7MONITORING & REMEDIATION WELL CONSTRUCTION INFORMATIONSprings Road Sporting & ShootingIncident Number: 27716Well ID Date InstalledWell Casing Diameter(inches)Total Depth     (feet)Well Casing Depth (feet)Screened Interval       (feet)Top‐of‐Casing Elevation      (feet)Date Water Level MeasuredDepth‐to‐Water from Top‐of‐Casing(feet)LNAPL Thickness(feet)GroundwaterElevation         (feet) 2.) The Top-of-Casing elevations are relative to the approximate site elevation feet above mean sea level. 4.) Groundwater elevation calculated by: (Top-of-Casing - Depth-to-Water) + (LNAPL Thickness x 0.8581) 5.) N/A = Not Applicable 6.) NM = Not MeasuredNotes: 1.) Well construction information was obtained from previous consultants reports. 3.) LNAPL = Light Non-Aqueous Phase LiquidPage 1 of 1 Well ID Screened  Interval      (feet) Top‐of‐ Casing  Elevation     (feet) Date Water Level  Measured Depth‐to‐ LNAPL (feet) Depth‐to‐Water Uncorrected (feet) LNAPL Thickness (feet) Depth‐to‐Water Corrected (feet) Groundwater  Surface Elevation          (feet) 6/4/2013 ‐‐‐20.79 ‐‐‐20.79 79.21 6/24/2015 ‐‐‐22.41 ‐‐‐22.41 77.59 6/2/2016 ‐‐‐20.65 ‐‐‐20.65 79.35 12/9/2016 ‐‐‐24.71 ‐‐‐24.71 75.29 6/19/2017 ‐‐‐23.47 ‐‐‐23.47 76.53 12/18/2017 ‐‐‐23.68 ‐‐‐23.68 76.32 6/25/2018 ‐‐‐21.20 ‐‐‐21.20 78.80 12/3/2018 ‐‐‐19.93 ‐‐‐19.93 80.07 6/16/2021 ‐‐‐17.99 ‐‐‐17.99 82.01 6/15/2022 ‐‐‐21.85 ‐‐‐21.85 78.15 12/1/2022 ‐‐‐22.20 ‐‐‐22.20 77.80 3/30/2023 ‐‐‐19.89 ‐‐‐19.89 80.11 6/4/2013 ‐‐‐20.84 ‐‐‐20.84 78.61 6/24/2015 ‐‐‐22.24 ‐‐‐22.24 77.21 6/2/2016 ‐‐‐20.27 ‐‐‐20.27 79.18 6/16/2021 ‐‐‐17.55 ‐‐‐17.55 81.90 6/15/2022 ‐‐‐21.63 ‐‐‐21.63 77.82 3/30/2023 ‐‐‐19.72 ‐‐‐19.72 79.73 6/4/2013 ‐‐‐20.47 ‐‐‐20.47 78.79 6/24/2015 ‐‐‐22.14 ‐‐‐22.14 77.12 6/2/2016 ‐‐‐20.22 ‐‐‐20.22 79.04 12/9/2016 ‐‐‐24.29 ‐‐‐24.29 74.97 6/19/2017 ‐‐‐23.73 ‐‐‐23.73 75.53 12/18/2017 ‐‐‐23.92 ‐‐‐23.92 75.34 6/25/2018 ‐‐‐20.56 ‐‐‐20.56 78.70 12/3/2018 ‐‐‐19.64 ‐‐‐19.64 79.62 6/16/2021 ‐‐‐17.28 ‐‐‐17.28 81.98 6/15/2022 ‐‐‐21.43 ‐‐‐21.43 77.83 12/1/2022 ‐‐‐21.60 ‐‐‐21.60 77.66 3/30/2023 ‐‐‐19.38 ‐‐‐19.38 79.88 6/4/2013 ‐‐‐20.85 ‐‐‐20.85 79.73 6/24/2015 ‐‐‐22.57 ‐‐‐22.57 78.01 6/2/2016 ‐‐‐20.91 ‐‐‐20.91 79.67 12/9/2016 ‐‐‐24.84 ‐‐‐24.84 75.74 6/19/2017 ‐‐‐23.61 ‐‐‐23.61 76.97 12/18/2017 ‐‐‐23.97 ‐‐‐23.97 76.61 6/25/2018 ‐‐‐21.28 ‐‐‐21.28 79.30 12/3/2018 ‐‐‐20.37 ‐‐‐20.37 80.21 6/16/2021 ‐‐‐17.49 ‐‐‐17.49 83.09 6/15/2022 ‐‐‐21.96 ‐‐‐21.96 78.62 12/1/2022 ‐‐‐22.30 ‐‐‐22.30 78.28 3/30/2023 ‐‐‐20.07 ‐‐‐20.07 80.51 6/4/2013 ‐‐‐21.67 ‐‐‐21.67 79.81 6/24/2015 ‐‐‐23.49 ‐‐‐23.49 77.99 6/2/2016 ‐‐‐21.68 ‐‐‐21.68 79.80 6/16/2021 ‐‐‐18.74 ‐‐‐18.74 82.74 6/4/2013 ‐‐‐19.84 ‐‐‐19.84 79.19 6/24/2015 ‐‐‐21.45 ‐‐‐21.45 77.58 6/2/2016 ‐‐‐19.73 ‐‐‐19.73 79.30 12/9/2016 ‐‐‐23.75 ‐‐‐23.75 75.28 6/19/2017 ‐‐‐19.41 ‐‐‐19.41 79.62 6/16/2021 ‐‐‐16.65 ‐‐‐16.65 82.38 6/15/2022 ‐‐‐20.97 ‐‐‐20.97 78.06 6/4/2013 ‐‐‐18.02 ‐‐‐18.02 78.52 6/24/2015 ‐‐‐19.57 ‐‐‐19.57 76.97 6/2/2016 ‐‐‐17.61 ‐‐‐17.61 78.93 6/16/2021 ‐‐‐14.73 ‐‐‐14.73 81.81 15 ‐ 35 99.03 MW‐715 ‐ 35 96.54 MW‐315 ‐ 35 99.26 MW‐415 ‐ 35 100.58 MW‐515 ‐ 35 101.48 MW‐6 MW‐120‐40 100.00 MW‐215 ‐ 35 99.45 TABLE B‐9 CURRENT & HISTORICAL GROUNDWATER ELEVATIONS Springs Road Sporting & Shooting Incident Number: 27716 3462 Springs Road NE Hickory, Catawba County, North Carolina Page 1 of 2 Well ID Screened  Interval      (feet) Top‐of‐ Casing  Elevation     (feet) Date Water Level  Measured Depth‐to‐ LNAPL (feet) Depth‐to‐Water Uncorrected (feet) LNAPL Thickness (feet) Depth‐to‐Water Corrected (feet) Groundwater  Surface Elevation          (feet) TABLE B‐9 CURRENT & HISTORICAL GROUNDWATER ELEVATIONS Springs Road Sporting & Shooting Incident Number: 27716 3462 Springs Road NE Hickory, Catawba County, North Carolina 6/4/2013 ‐‐‐20.61 ‐‐‐20.61 80.05 6/24/2015 ‐‐‐23.39 ‐‐‐23.39 77.27 6/2/2016 ‐‐‐20.55 ‐‐‐20.55 80.11 6/16/2021 ‐‐‐16.85 ‐‐‐16.85 83.81 6/15/2022 ‐‐‐21.59 ‐‐‐21.59 79.07 6/4/2013 ‐‐‐19.75 ‐‐‐19.75 80.32 6/24/2015 ‐‐‐21.71 ‐‐‐21.71 78.36 6/2/2016 ‐‐‐19.72 ‐‐‐19.72 80.35 6/16/2021 ‐‐‐15.94 ‐‐‐15.94 84.13 6/4/2013 ‐‐‐20.45 ‐‐‐20.45 79.86 6/24/2015 ‐‐‐22.12 ‐‐‐22.12 78.19 6/2/2016 ‐‐‐20.31 ‐‐‐20.31 80.00 6/16/2021 ‐‐‐16.70 ‐‐‐16.70 83.61 6/4/2013 ‐‐‐20.71 ‐‐‐20.71 78.97 6/24/2015 ‐‐‐22.25 ‐‐‐22.25 77.43 6/2/2016 ‐‐‐20.40 ‐‐‐20.40 79.28 6/16/2021 ‐‐‐17.22 ‐‐‐17.22 82.46 6/4/2013 ‐‐‐21.96 ‐‐‐21.96 77.68 6/24/2015 ‐‐‐23.55 ‐‐‐23.55 76.09 6/2/2016 ‐‐‐21.39 ‐‐‐21.39 78.25 6/16/2021 ‐‐‐18.66 ‐‐‐18.66 80.98 6/15/2022 ‐‐‐22.58 ‐‐‐22.58 77.06 6/4/2013 ‐‐‐21.14 ‐‐‐21.14 78.50 6/24/2015 ‐‐‐22.72 ‐‐‐22.72 76.92 6/2/2016 ‐‐‐20.98 ‐‐‐20.98 78.66 12/9/2016 ‐‐‐24.99 ‐‐‐24.99 74.65 6/19/2017 ‐‐‐23.04 ‐‐‐23.04 76.60 12/18/2017 ‐‐‐24.08 ‐‐‐24.08 75.56 6/25/2018 ‐‐‐21.07 ‐‐‐21.07 78.57 12/3/2018 ‐‐‐20.38 ‐‐‐20.38 79.26 6/16/2021 ‐‐‐17.72 ‐‐‐17.72 81.92 6/15/2022 ‐‐‐22.06 ‐‐‐22.06 77.58 12/1/2022 ‐‐‐22.50 ‐‐‐22.50 77.14 3/30/2023 ‐‐‐20.11 ‐‐‐20.11 79.53 2/1/2022 ‐‐‐25.55 ‐‐‐25.55 74.09 6/15/2022 ‐‐‐23.48 ‐‐‐23.48 76.16 6/4/2013 ‐‐‐20.55 ‐‐‐20.55 78.55 6/24/2015 ‐‐‐10.01 ‐‐‐10.01 89.09 6/2/2016 ‐‐‐20.94 ‐‐‐20.94 78.16 12/9/2016 ‐‐‐24.40 ‐‐‐24.40 74.70 6/19/2017 ‐‐‐22.29 ‐‐‐22.29 76.81 12/18/2017 ‐‐‐22.82 ‐‐‐22.82 76.28 6/25/2018 ‐‐‐20.24 ‐‐‐20.24 78.86 6/16/2021 ‐‐‐18.55 ‐‐‐18.55 80.55 6/15/2022 ‐‐‐21.52 ‐‐‐21.52 77.58 12/1/2022 ‐‐‐21.80 ‐‐‐21.80 77.30 3/30/2023 ‐‐‐19.50 ‐‐‐19.50 79.60 15 ‐ 35 MW‐12 15 ‐ 35 99.64 MW‐13 15 ‐ 35 99.64 MW‐815 ‐ 35 100.66 50‐ 55 99.10 99.68 MW‐915 ‐ 35 100.07 MW‐10 15 ‐ 35 100.31 MW‐11 MW‐14 15‐30 99.50        3.) Groundwater elevation calculated by: (Top‐of‐Casing ‐ Depth‐to‐Water) + (LNAPL Thickness x 0.8581)        4.) NM = Not Measured        5.) LNAPL = Light Non‐Aqueous Phase Liquid Notes:         1.) Well construction information was obtained from previous consultants reports.        2.) Top‐of‐Casing elevations were determined by previous consultants. DW‐1 Page 2 of 2 WithersRavenel Our People. Your Success.      APPENDIX A    FIELD NOTES & PHOTOGRAPHIC RECORD    WithersRavenel Our People. Your Success.       PHOTO 1  Site building facing south     PHOTO 2  Location of MW‐1 with new well vault  WithersRavenel Our People. Your Success.     PHOTO 3  Location of MW‐3     PHOTO 4  Location of monitoring well MW‐4  WithersRavenel Our People. Your Success.     PHOTO 5  Location of MW‐13     PHOTO 6  Location of DW‐1 and MW‐2      WithersRavenel Our People. Your Success.      APPENDIX B    HISTORICAL GROUNDWATER ANALYTICAL DATA     WithersRavenel Our People. Your Success.    APPENDIX C    LABORATORY ANALYTICAL REPORT AND CHAIN‐OF‐CUSTODY    Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.   4/17/2023 Withers & Ravenel Liz Allyn 115 Mackenan Dr. BUILDING 117 Cary, NC, 27511 Ref: Analytical Testing Lab Report Number: 23-095-0001 Client Project Description: Spring Rd Sporting + Shooting 23-0307-EL Dear Liz Allyn: Waypoint Analytical, LLC (Charlotte) received sample(s) on 4/1/2023 for the analyses presented in the following report. The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method. The analytical data has been validated using standard quality control measures performed as required by the analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136 Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time. Refer to sample analysis time for confirmation of holding time compliance. The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as- received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely, Angela D Overcash Senior Project Manager Page 1 of 40 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202337735State ProgramNorth Carolina 12/31/2023402State ProgramNorth Carolina 07/31/202399012State ProgramSouth Carolina 12/31/202299012State ProgramSouth Carolina Page 1 of 1 00016/23-095-0001 Page 2 of 40 Report Number: Sample Summary Table Client Project Description: 23-095-0001 Spring Rd Sporting + Shooting 23-0307-EL Lab No Client Sample ID Matrix Date Collected Date Received 03/30/2023 11:50Aqueous 92962 MW-1 04/01/2023 13:15 03/30/2023 12:20Aqueous 92963 MW-2 04/01/2023 13:15 03/30/2023 13:30Aqueous 92964 MW-3 04/01/2023 13:15 03/30/2023 14:35Aqueous 92965 MW-4 04/01/2023 13:15 03/30/2023 14:05Aqueous 92966 MW-13 04/01/2023 13:15 03/30/2023 12:55Aqueous 92967 DW-1 04/01/2023 13:15 Page 3 of 40 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 23-095-0001 Report Limit Project:Spring Rd Sporting + Shooting V 92962MW-1 2980 04/12/2023 23:036200BBenzeneµg/L 50.0 87.9 04/12/2023 23:036200BEthylbenzeneµg/L 50.0 2150 04/12/2023 23:036200Btert-Butyl Alcohol (TBA)µg/L 1000 8680 04/12/2023 23:036200Btert-Amyl Alcohol (TAA)µg/L 1000 415 04/12/2023 23:036200BTolueneµg/L 50.0 50.7 04/12/2023 23:036200B1,2,4-Trimethylbenzene µg/L 50.0 66.4 04/12/2023 23:036200Bo-Xylene µg/L 50.0 222 04/12/2023 23:036200Bm,p-Xylene µg/L 100 288 04/12/2023 23:036200BXylene (Total)µg/L 50.0 V 92963MW-2 465 04/12/2023 21:156200BBenzeneµg/L 5.00 7.51 04/12/2023 21:156200BDi-Isopropyl Ether (DIPE)µg/L 5.00 19.2 04/12/2023 21:156200BEthylbenzeneµg/L 5.00 31.1 04/12/2023 21:156200BMethyl tert-butyl ether (MTBE)µg/L 10.0 29.8 04/12/2023 21:156200BNaphthaleneµg/L 10.0 1640 04/12/2023 21:156200Btert-Butyl Alcohol (TBA)µg/L 100 1270 04/14/2023 00:426200Btert-Amyl Alcohol (TAA)µg/L 1000 10.8 04/12/2023 21:156200BTolueneµg/L 5.00 17.1 04/12/2023 21:156200B1,2,4-Trimethylbenzene µg/L 5.00 14.8 04/12/2023 21:156200Bo-Xylene µg/L 5.00 37.8 04/12/2023 21:156200Bm,p-Xylene µg/L 10.0 52.6 04/12/2023 21:156200BXylene (Total)µg/L 5.00 V 92964MW-3 168 04/13/2023 22:266200BBenzeneµg/L 5.00 0.510 04/12/2023 19:536200Bsec-Butyl benzene µg/L 0.500 12.0 04/12/2023 19:536200BDi-Isopropyl Ether (DIPE)µg/L 0.500 2.08 04/12/2023 19:536200BEthylbenzeneµg/L 0.500 0.844 04/12/2023 19:536200BIsopropylbenzeneµg/L 0.500 24.3 04/12/2023 19:536200BMethyl tert-butyl ether (MTBE)µg/L 1.00 1.06 04/12/2023 19:536200BNaphthaleneµg/L 1.00 162 04/12/2023 19:536200Btert-Butyl Alcohol (TBA)µg/L 10.0 280 04/13/2023 22:266200Btert-Amyl Alcohol (TAA)µg/L 100 3.09 04/12/2023 19:536200BTolueneµg/L 0.500 4.39 04/12/2023 19:536200B1,2,4-Trimethylbenzene µg/L 0.500 2.87 04/12/2023 19:536200B1,3,5-Trimethylbenzene µg/L 0.500 1.92 04/12/2023 19:536200Bo-Xylene µg/L 0.500 Page 4 of 40 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 23-095-0001 Report Limit Project:Spring Rd Sporting + Shooting V 92964MW-3 7.47 04/12/2023 19:536200Bm,p-Xylene µg/L 1.00 9.39 04/12/2023 19:536200BXylene (Total)µg/L 0.500 V 92965MW-4 268 04/13/2023 22:536200BBenzeneµg/L 5.00 0.600 04/12/2023 20:206200Bn-Butylbenzene µg/L 0.500 0.947 04/12/2023 20:206200Bsec-Butyl benzene µg/L 0.500 0.980 04/12/2023 20:206200BDi-Isopropyl Ether (DIPE)µg/L 0.500 56.2 04/12/2023 20:206200BEthylbenzeneµg/L 0.500 6.38 04/12/2023 20:206200BIsopropylbenzeneµg/L 0.500 38.9 04/12/2023 20:206200BMethyl tert-butyl ether (MTBE)µg/L 1.00 14.1 04/12/2023 20:206200Bn-Propylbenzene µg/L 0.500 196 04/13/2023 22:536200Btert-Butyl Alcohol (TBA)µg/L 100 361 04/13/2023 22:536200Btert-Amyl Alcohol (TAA)µg/L 100 16.3 04/12/2023 20:206200BTolueneµg/L 0.500 34.3 04/12/2023 20:206200B1,2,4-Trimethylbenzene µg/L 0.500 32.3 04/12/2023 20:206200B1,3,5-Trimethylbenzene µg/L 0.500 16.7 04/12/2023 20:206200Bo-Xylene µg/L 0.500 55.5 04/12/2023 20:206200Bm,p-Xylene µg/L 1.00 72.2 04/12/2023 20:206200BXylene (Total)µg/L 0.500 V 92966MW-13 182 04/12/2023 21:426200BBenzeneµg/L 5.00 7.65 04/12/2023 21:426200BDi-Isopropyl Ether (DIPE)µg/L 5.00 42.1 04/12/2023 21:426200BEthylbenzeneµg/L 5.00 13.3 04/12/2023 21:426200B2-Hexanone µg/L 10.0 15.0 04/12/2023 21:426200BMethyl tert-butyl ether (MTBE)µg/L 10.0 301 04/12/2023 21:426200BNaphthaleneµg/L 10.0 6.69 04/12/2023 21:426200Bn-Propylbenzene µg/L 5.00 104 04/12/2023 21:426200Btert-Butyl Alcohol (TBA)µg/L 100 270 04/12/2023 21:426200Btert-Amyl Alcohol (TAA)µg/L 100 93.9 04/12/2023 21:426200BTolueneµg/L 5.00 169 04/12/2023 21:426200B1,2,4-Trimethylbenzene µg/L 5.00 53.0 04/12/2023 21:426200B1,3,5-Trimethylbenzene µg/L 5.00 141 04/12/2023 21:426200Bo-Xylene µg/L 5.00 221 04/12/2023 21:426200Bm,p-Xylene µg/L 10.0 362 04/12/2023 21:426200BXylene (Total)µg/L 5.00 Page 5 of 40 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 23-095-0001 Report Limit Project:Spring Rd Sporting + Shooting V 92967DW-1 2.17 04/12/2023 19:266200BBenzeneµg/L 0.500 23.9 04/12/2023 19:266200BDi-Isopropyl Ether (DIPE)µg/L 0.500 838 04/14/2023 01:366200BMethyl tert-butyl ether (MTBE)µg/L 100 69.6 04/12/2023 19:266200Btert-Amyl Alcohol (TAA)µg/L 10.0 Page 6 of 40   Client: Withers & Ravenel CASE NARRATIVE Project: Spring Rd Sporting + Shooting Lab Report Number: 23-095-0001 Date: 4/17/2023 Volatile Organic Compounds - GC/MS Method 6200B Analyte: Methylene chloride QC Batch No: V31972/V31971 Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits. Analyte: tert-Amyl alcohol QC Batch No: V32046/V31971 Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits. Page 7 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-1 92962 Matrix: 3/30/2023 11:50 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <1000 µg/L 1000Acetone 100 04/12/23 23:03 6200BANG 2980 µg/L 50.0Benzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Bromobenzene 100 04/12/23 23:03 6200BANG <100 µg/L 100Bromochloromethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Bromodichloromethane 100 04/12/23 23:03 6200BANG <500 µg/L 500Bromoform 100 04/12/23 23:03 6200BANG <100 µg/L 100Bromomethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0n-Butylbenzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0sec-Butyl benzene 100 04/12/23 23:03 6200BANG <200 µg/L 200tert-Butyl benzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Carbon Tetrachloride 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Chlorobenzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Chlorodibromomethane 100 04/12/23 23:03 6200BANG <100 µg/L 100Chloroethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Chloroform 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Chloromethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.02-Chlorotoluene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.04-Chlorotoluene 100 04/12/23 23:03 6200BANG <200 µg/L 2001,2-Dibromo-3-Chloropropane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,2-Dibromoethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Dibromomethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,2-Dichlorobenzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,3-Dichlorobenzene 100 04/12/23 23:03 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 8 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-1 92962 Matrix: 3/30/2023 11:50 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <50.0 µg/L 50.01,4-Dichlorobenzene 100 04/12/23 23:03 6200BANG <500 µg/L 500Dichlorodifluoromethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,1-Dichloroethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,2-Dichloroethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,1-Dichloroethene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0cis-1,2-Dichloroethene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0trans-1,2-Dichloroethene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,2-Dichloropropane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,3-Dichloropropane 100 04/12/23 23:03 6200BANG <200 µg/L 2002,2-Dichloropropane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,1-Dichloropropene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0cis-1,3-Dichloropropene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0trans-1,3-Dichloropropene 100 04/12/23 23:03 6200BANG <20000 µg/L 20000Ethanol 100 04/12/23 23:03 6200BANG 87.9 µg/L 50.0Ethylbenzene 100 04/12/23 23:03 6200BANG <300 µg/L 300Hexachlorobutadiene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Di-Isopropyl Ether (DIPE)100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Isopropylbenzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.04-Isopropyl toluene 100 04/12/23 23:03 6200BANG <100 µg/L 1002-Hexanone 100 04/12/23 23:03 6200BANG <500 µg/L 500Methyl Ethyl Ketone (MEK)100 04/12/23 23:03 6200BANG <200 µg/L 200Methylene Chloride 100 04/12/23 23:03 6200BANG <100 µg/L 100Methyl tert-butyl ether (MTBE)100 04/12/23 23:03 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 9 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-1 92962 Matrix: 3/30/2023 11:50 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <100 µg/L 1004-Methyl-2-Pentanone 100 04/12/23 23:03 6200BANG <100 µg/L 100Naphthalene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0n-Propylbenzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Styrene 100 04/12/23 23:03 6200BANG 8680 µg/L 1000tert-Amyl Alcohol (TAA)100 04/12/23 23:03 6200BANG <1000 µg/L 1000tert-Amyl Methyl Ether (TAME)100 04/12/23 23:03 6200BANG 2150 µg/L 1000tert-Butyl Alcohol (TBA)100 04/12/23 23:03 6200BANG <1000 µg/L 1000Ethyl Tertiary Butyl Ether (ETBE)100 04/12/23 23:03 6200BANG <1000 µg/L 1000tert-Butyl formate (TBF)100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Tetrachloroethene 100 04/12/23 23:03 6200BANG 415 µg/L 50.0Toluene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,2,3-Trichlorobenzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,2,4-Trichlorobenzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,1,1-Trichloroethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,1,2-Trichloroethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Trichloroethene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.0Trichlorofluoromethane 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,2,3-Trichloropropane 100 04/12/23 23:03 6200BANG 50.7 µg/L 50.01,2,4-Trimethylbenzene 100 04/12/23 23:03 6200BANG <50.0 µg/L 50.01,3,5-Trimethylbenzene 100 04/12/23 23:03 6200BANG <500 µg/L 500Vinyl Acetate 100 04/12/23 23:03 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 10 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-1 92962 Matrix: 3/30/2023 11:50 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <50.0 µg/L 50.0Vinyl Chloride 100 04/12/23 23:03 6200BANG 222 µg/L 100m,p-Xylene 100 04/12/23 23:03 6200BANG 66.4 µg/L 50.0o-Xylene 100 04/12/23 23:03 6200BANG 288 µg/L 50.0Xylene (Total)100 04/12/23 23:03 6200B Surrogate: 4-Bromofluorobenzene 108 Limits: 70-130%04/12/23 23:03100 ANG V31972 Surrogate: Dibromofluoromethane 96.4 Limits: 70-130%04/12/23 23:03100 ANG V31972 Surrogate: 1,2-Dichloroethane - d4 91.2 Limits: 70-130%04/12/23 23:03100 ANG V31972 Surrogate: Toluene-d8 96.0 Limits: 70-130%04/12/23 23:03100 ANG V31972 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 11 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-2 92963 Matrix: 3/30/2023 12:20 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <100 µg/L 100Acetone 10 04/12/23 21:15 6200BANG 465 µg/L 5.00Benzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Bromobenzene 10 04/12/23 21:15 6200BANG <10.0 µg/L 10.0Bromochloromethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Bromodichloromethane 10 04/12/23 21:15 6200BANG <50.0 µg/L 50.0Bromoform 10 04/12/23 21:15 6200BANG <10.0 µg/L 10.0Bromomethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00n-Butylbenzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00sec-Butyl benzene 10 04/12/23 21:15 6200BANG <20.0 µg/L 20.0tert-Butyl benzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Carbon Tetrachloride 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Chlorobenzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Chlorodibromomethane 10 04/12/23 21:15 6200BANG <10.0 µg/L 10.0Chloroethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Chloroform 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Chloromethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.002-Chlorotoluene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.004-Chlorotoluene 10 04/12/23 21:15 6200BANG <20.0 µg/L 20.01,2-Dibromo-3-Chloropropane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,2-Dibromoethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Dibromomethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,2-Dichlorobenzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,3-Dichlorobenzene 10 04/12/23 21:15 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 12 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-2 92963 Matrix: 3/30/2023 12:20 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <5.00 µg/L 5.001,4-Dichlorobenzene 10 04/12/23 21:15 6200BANG <50.0 µg/L 50.0Dichlorodifluoromethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,1-Dichloroethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,2-Dichloroethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,1-Dichloroethene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00cis-1,2-Dichloroethene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00trans-1,2-Dichloroethene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,2-Dichloropropane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,3-Dichloropropane 10 04/12/23 21:15 6200BANG <20.0 µg/L 20.02,2-Dichloropropane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,1-Dichloropropene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00cis-1,3-Dichloropropene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00trans-1,3-Dichloropropene 10 04/12/23 21:15 6200BANG <2000 µg/L 2000Ethanol 10 04/12/23 21:15 6200BANG 19.2 µg/L 5.00Ethylbenzene 10 04/12/23 21:15 6200BANG <30.0 µg/L 30.0Hexachlorobutadiene 10 04/12/23 21:15 6200BANG 7.51 µg/L 5.00Di-Isopropyl Ether (DIPE)10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Isopropylbenzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.004-Isopropyl toluene 10 04/12/23 21:15 6200BANG <10.0 µg/L 10.02-Hexanone 10 04/12/23 21:15 6200BANG <50.0 µg/L 50.0Methyl Ethyl Ketone (MEK)10 04/12/23 21:15 6200BANG <20.0 µg/L 20.0Methylene Chloride 10 04/12/23 21:15 6200BANG 31.1 µg/L 10.0Methyl tert-butyl ether (MTBE)10 04/12/23 21:15 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 13 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-2 92963 Matrix: 3/30/2023 12:20 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <10.0 µg/L 10.04-Methyl-2-Pentanone 10 04/12/23 21:15 6200BANG 29.8 µg/L 10.0Naphthalene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00n-Propylbenzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Styrene 10 04/12/23 21:15 6200BANG 1270 µg/L 1000tert-Amyl Alcohol (TAA)100 04/14/23 00:42 6200BMSA <100 µg/L 100tert-Amyl Methyl Ether (TAME)10 04/12/23 21:15 6200BANG 1640 µg/L 100tert-Butyl Alcohol (TBA)10 04/12/23 21:15 6200BANG <100 µg/L 100Ethyl Tertiary Butyl Ether (ETBE)10 04/12/23 21:15 6200BANG <100 µg/L 100tert-Butyl formate (TBF)10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,1,1,2-Tetrachloroethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,1,2,2-Tetrachloroethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Tetrachloroethene 10 04/12/23 21:15 6200BANG 10.8 µg/L 5.00Toluene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,2,3-Trichlorobenzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,2,4-Trichlorobenzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,1,1-Trichloroethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,1,2-Trichloroethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Trichloroethene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.00Trichlorofluoromethane 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,2,3-Trichloropropane 10 04/12/23 21:15 6200BANG 17.1 µg/L 5.001,2,4-Trimethylbenzene 10 04/12/23 21:15 6200BANG <5.00 µg/L 5.001,3,5-Trimethylbenzene 10 04/12/23 21:15 6200BANG <50.0 µg/L 50.0Vinyl Acetate 10 04/12/23 21:15 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 14 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-2 92963 Matrix: 3/30/2023 12:20 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <5.00 µg/L 5.00Vinyl Chloride 10 04/12/23 21:15 6200BANG 37.8 µg/L 10.0m,p-Xylene 10 04/12/23 21:15 6200BANG 14.8 µg/L 5.00o-Xylene 10 04/12/23 21:15 6200BANG 52.6 µg/L 5.00Xylene (Total)10 04/12/23 21:15 6200B Surrogate: 4-Bromofluorobenzene 107 Limits: 70-130%04/12/23 21:1510 ANG V31972 Surrogate: Dibromofluoromethane 95.6 Limits: 70-130%04/12/23 21:1510 ANG V31972 Surrogate: 1,2-Dichloroethane - d4 90.4 Limits: 70-130%04/12/23 21:1510 ANG V31972 Surrogate: Toluene-d8 96.6 Limits: 70-130%04/12/23 21:1510 ANG V31972 Surrogate: 4-Bromofluorobenzene 107 Limits: 70-130%04/14/23 00:42100 MSA V32046 Surrogate: Dibromofluoromethane 98.6 Limits: 70-130%04/14/23 00:42100 MSA V32046 Surrogate: 1,2-Dichloroethane - d4 91.4 Limits: 70-130%04/14/23 00:42100 MSA V32046 Surrogate: Toluene-d8 94.4 Limits: 70-130%04/14/23 00:42100 MSA V32046 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 15 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-3 92964 Matrix: 3/30/2023 13:30 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <10.0 µg/L 10.0Acetone 1 04/12/23 19:53 6200BANG 168 µg/L 5.00Benzene 10 04/13/23 22:26 6200BMSA <0.500 µg/L 0.500Bromobenzene 1 04/12/23 19:53 6200BANG <1.00 µg/L 1.00Bromochloromethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Bromodichloromethane 1 04/12/23 19:53 6200BANG <5.00 µg/L 5.00Bromoform 1 04/12/23 19:53 6200BANG <1.00 µg/L 1.00Bromomethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500n-Butylbenzene 1 04/12/23 19:53 6200BANG 0.510 µg/L 0.500sec-Butyl benzene 1 04/12/23 19:53 6200BANG <2.00 µg/L 2.00tert-Butyl benzene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Carbon Tetrachloride 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Chlorobenzene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Chlorodibromomethane 1 04/12/23 19:53 6200BANG <1.00 µg/L 1.00Chloroethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Chloroform 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Chloromethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5002-Chlorotoluene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5004-Chlorotoluene 1 04/12/23 19:53 6200BANG <2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,2-Dibromoethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Dibromomethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,2-Dichlorobenzene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,3-Dichlorobenzene 1 04/12/23 19:53 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 16 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-3 92964 Matrix: 3/30/2023 13:30 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <0.500 µg/L 0.5001,4-Dichlorobenzene 1 04/12/23 19:53 6200BANG <5.00 µg/L 5.00Dichlorodifluoromethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,1-Dichloroethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,2-Dichloroethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,1-Dichloroethene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500cis-1,2-Dichloroethene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500trans-1,2-Dichloroethene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,2-Dichloropropane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,3-Dichloropropane 1 04/12/23 19:53 6200BANG <2.00 µg/L 2.002,2-Dichloropropane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,1-Dichloropropene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500cis-1,3-Dichloropropene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500trans-1,3-Dichloropropene 1 04/12/23 19:53 6200BANG <200 µg/L 200Ethanol 1 04/12/23 19:53 6200BANG 2.08 µg/L 0.500Ethylbenzene 1 04/12/23 19:53 6200BANG <3.00 µg/L 3.00Hexachlorobutadiene 1 04/12/23 19:53 6200BANG 12.0 µg/L 0.500Di-Isopropyl Ether (DIPE)1 04/12/23 19:53 6200BANG 0.844 µg/L 0.500Isopropylbenzene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5004-Isopropyl toluene 1 04/12/23 19:53 6200BANG <1.00 µg/L 1.002-Hexanone 1 04/12/23 19:53 6200BANG <5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 04/12/23 19:53 6200BANG <2.00 µg/L 2.00Methylene Chloride 1 04/12/23 19:53 6200BANG 24.3 µg/L 1.00Methyl tert-butyl ether (MTBE)1 04/12/23 19:53 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 17 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-3 92964 Matrix: 3/30/2023 13:30 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <1.00 µg/L 1.004-Methyl-2-Pentanone 1 04/12/23 19:53 6200BANG 1.06 µg/L 1.00Naphthalene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500n-Propylbenzene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Styrene 1 04/12/23 19:53 6200BANG 280 µg/L 100tert-Amyl Alcohol (TAA)10 04/13/23 22:26 6200BMSA <10.0 µg/L 10.0tert-Amyl Methyl Ether (TAME)1 04/12/23 19:53 6200BANG 162 µg/L 10.0tert-Butyl Alcohol (TBA)1 04/12/23 19:53 6200BANG <10.0 µg/L 10.0Ethyl Tertiary Butyl Ether (ETBE)1 04/12/23 19:53 6200BANG <10.0 µg/L 10.0tert-Butyl formate (TBF)1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Tetrachloroethene 1 04/12/23 19:53 6200BANG 3.09 µg/L 0.500Toluene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,1,1-Trichloroethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,1,2-Trichloroethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Trichloroethene 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.500Trichlorofluoromethane 1 04/12/23 19:53 6200BANG <0.500 µg/L 0.5001,2,3-Trichloropropane 1 04/12/23 19:53 6200BANG 4.39 µg/L 0.5001,2,4-Trimethylbenzene 1 04/12/23 19:53 6200BANG 2.87 µg/L 0.5001,3,5-Trimethylbenzene 1 04/12/23 19:53 6200BANG <5.00 µg/L 5.00Vinyl Acetate 1 04/12/23 19:53 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 18 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-3 92964 Matrix: 3/30/2023 13:30 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <0.500 µg/L 0.500Vinyl Chloride 1 04/12/23 19:53 6200BANG 7.47 µg/L 1.00m,p-Xylene 1 04/12/23 19:53 6200BANG 1.92 µg/L 0.500o-Xylene 1 04/12/23 19:53 6200BANG 9.39 µg/L 0.500Xylene (Total)1 04/12/23 19:53 6200B Surrogate: 4-Bromofluorobenzene 106 Limits: 70-130%04/12/23 19:531 ANG V31972 Surrogate: Dibromofluoromethane 97.6 Limits: 70-130%04/12/23 19:531 ANG V31972 Surrogate: 1,2-Dichloroethane - d4 92.8 Limits: 70-130%04/12/23 19:531 ANG V31972 Surrogate: Toluene-d8 96.6 Limits: 70-130%04/12/23 19:531 ANG V31972 Surrogate: 4-Bromofluorobenzene 108 Limits: 70-130%04/13/23 22:2610 MSA V32046 Surrogate: Dibromofluoromethane 95.0 Limits: 70-130%04/13/23 22:2610 MSA V32046 Surrogate: 1,2-Dichloroethane - d4 91.4 Limits: 70-130%04/13/23 22:2610 MSA V32046 Surrogate: Toluene-d8 95.0 Limits: 70-130%04/13/23 22:2610 MSA V32046 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 19 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-4 92965 Matrix: 3/30/2023 14:35 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <10.0 µg/L 10.0Acetone 1 04/12/23 20:20 6200BANG 268 µg/L 5.00Benzene 10 04/13/23 22:53 6200BMSA <0.500 µg/L 0.500Bromobenzene 1 04/12/23 20:20 6200BANG <1.00 µg/L 1.00Bromochloromethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Bromodichloromethane 1 04/12/23 20:20 6200BANG <5.00 µg/L 5.00Bromoform 1 04/12/23 20:20 6200BANG <1.00 µg/L 1.00Bromomethane 1 04/12/23 20:20 6200BANG 0.600 µg/L 0.500n-Butylbenzene 1 04/12/23 20:20 6200BANG 0.947 µg/L 0.500sec-Butyl benzene 1 04/12/23 20:20 6200BANG <2.00 µg/L 2.00tert-Butyl benzene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Carbon Tetrachloride 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Chlorobenzene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Chlorodibromomethane 1 04/12/23 20:20 6200BANG <1.00 µg/L 1.00Chloroethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Chloroform 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Chloromethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5002-Chlorotoluene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5004-Chlorotoluene 1 04/12/23 20:20 6200BANG <2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,2-Dibromoethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Dibromomethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,2-Dichlorobenzene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,3-Dichlorobenzene 1 04/12/23 20:20 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 20 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-4 92965 Matrix: 3/30/2023 14:35 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <0.500 µg/L 0.5001,4-Dichlorobenzene 1 04/12/23 20:20 6200BANG <5.00 µg/L 5.00Dichlorodifluoromethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,1-Dichloroethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,2-Dichloroethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,1-Dichloroethene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500cis-1,2-Dichloroethene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500trans-1,2-Dichloroethene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,2-Dichloropropane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,3-Dichloropropane 1 04/12/23 20:20 6200BANG <2.00 µg/L 2.002,2-Dichloropropane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,1-Dichloropropene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500cis-1,3-Dichloropropene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500trans-1,3-Dichloropropene 1 04/12/23 20:20 6200BANG <200 µg/L 200Ethanol 1 04/12/23 20:20 6200BANG 56.2 µg/L 0.500Ethylbenzene 1 04/12/23 20:20 6200BANG <3.00 µg/L 3.00Hexachlorobutadiene 1 04/12/23 20:20 6200BANG 0.980 µg/L 0.500Di-Isopropyl Ether (DIPE)1 04/12/23 20:20 6200BANG 6.38 µg/L 0.500Isopropylbenzene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5004-Isopropyl toluene 1 04/12/23 20:20 6200BANG <1.00 µg/L 1.002-Hexanone 1 04/12/23 20:20 6200BANG <5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 04/12/23 20:20 6200BANG <2.00 µg/L 2.00Methylene Chloride 1 04/12/23 20:20 6200BANG 38.9 µg/L 1.00Methyl tert-butyl ether (MTBE)1 04/12/23 20:20 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 21 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-4 92965 Matrix: 3/30/2023 14:35 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <1.00 µg/L 1.004-Methyl-2-Pentanone 1 04/12/23 20:20 6200BANG <1.00 µg/L 1.00Naphthalene 1 04/12/23 20:20 6200BANG 14.1 µg/L 0.500n-Propylbenzene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Styrene 1 04/12/23 20:20 6200BANG 361 µg/L 100tert-Amyl Alcohol (TAA)10 04/13/23 22:53 6200BMSA <10.0 µg/L 10.0tert-Amyl Methyl Ether (TAME)1 04/12/23 20:20 6200BANG 196 µg/L 100tert-Butyl Alcohol (TBA)10 04/13/23 22:53 6200BMSA <10.0 µg/L 10.0Ethyl Tertiary Butyl Ether (ETBE)1 04/12/23 20:20 6200BANG <10.0 µg/L 10.0tert-Butyl formate (TBF)1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Tetrachloroethene 1 04/12/23 20:20 6200BANG 16.3 µg/L 0.500Toluene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,1,1-Trichloroethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,1,2-Trichloroethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Trichloroethene 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.500Trichlorofluoromethane 1 04/12/23 20:20 6200BANG <0.500 µg/L 0.5001,2,3-Trichloropropane 1 04/12/23 20:20 6200BANG 34.3 µg/L 0.5001,2,4-Trimethylbenzene 1 04/12/23 20:20 6200BANG 32.3 µg/L 0.5001,3,5-Trimethylbenzene 1 04/12/23 20:20 6200BANG <5.00 µg/L 5.00Vinyl Acetate 1 04/12/23 20:20 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 22 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-4 92965 Matrix: 3/30/2023 14:35 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <0.500 µg/L 0.500Vinyl Chloride 1 04/12/23 20:20 6200BANG 55.5 µg/L 1.00m,p-Xylene 1 04/12/23 20:20 6200BANG 16.7 µg/L 0.500o-Xylene 1 04/12/23 20:20 6200BANG 72.2 µg/L 0.500Xylene (Total)1 04/12/23 20:20 6200B Surrogate: 4-Bromofluorobenzene 108 Limits: 70-130%04/12/23 20:201 ANG V31972 Surrogate: Dibromofluoromethane 95.4 Limits: 70-130%04/12/23 20:201 ANG V31972 Surrogate: 1,2-Dichloroethane - d4 93.2 Limits: 70-130%04/12/23 20:201 ANG V31972 Surrogate: Toluene-d8 97.4 Limits: 70-130%04/12/23 20:201 ANG V31972 Surrogate: 4-Bromofluorobenzene 107 Limits: 70-130%04/13/23 22:5310 MSA V32046 Surrogate: Dibromofluoromethane 96.2 Limits: 70-130%04/13/23 22:5310 MSA V32046 Surrogate: 1,2-Dichloroethane - d4 91.6 Limits: 70-130%04/13/23 22:5310 MSA V32046 Surrogate: Toluene-d8 95.0 Limits: 70-130%04/13/23 22:5310 MSA V32046 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 23 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-13 92966 Matrix: 3/30/2023 14:05 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <100 µg/L 100Acetone 10 04/12/23 21:42 6200BANG 182 µg/L 5.00Benzene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Bromobenzene 10 04/12/23 21:42 6200BANG <10.0 µg/L 10.0Bromochloromethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Bromodichloromethane 10 04/12/23 21:42 6200BANG <50.0 µg/L 50.0Bromoform 10 04/12/23 21:42 6200BANG <10.0 µg/L 10.0Bromomethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00n-Butylbenzene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00sec-Butyl benzene 10 04/12/23 21:42 6200BANG <20.0 µg/L 20.0tert-Butyl benzene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Carbon Tetrachloride 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Chlorobenzene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Chlorodibromomethane 10 04/12/23 21:42 6200BANG <10.0 µg/L 10.0Chloroethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Chloroform 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Chloromethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.002-Chlorotoluene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.004-Chlorotoluene 10 04/12/23 21:42 6200BANG <20.0 µg/L 20.01,2-Dibromo-3-Chloropropane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,2-Dibromoethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Dibromomethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,2-Dichlorobenzene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,3-Dichlorobenzene 10 04/12/23 21:42 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 24 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-13 92966 Matrix: 3/30/2023 14:05 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <5.00 µg/L 5.001,4-Dichlorobenzene 10 04/12/23 21:42 6200BANG <50.0 µg/L 50.0Dichlorodifluoromethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,1-Dichloroethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,2-Dichloroethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,1-Dichloroethene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00cis-1,2-Dichloroethene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00trans-1,2-Dichloroethene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,2-Dichloropropane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,3-Dichloropropane 10 04/12/23 21:42 6200BANG <20.0 µg/L 20.02,2-Dichloropropane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,1-Dichloropropene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00cis-1,3-Dichloropropene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00trans-1,3-Dichloropropene 10 04/12/23 21:42 6200BANG <2000 µg/L 2000Ethanol 10 04/12/23 21:42 6200BANG 42.1 µg/L 5.00Ethylbenzene 10 04/12/23 21:42 6200BANG <30.0 µg/L 30.0Hexachlorobutadiene 10 04/12/23 21:42 6200BANG 7.65 µg/L 5.00Di-Isopropyl Ether (DIPE)10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Isopropylbenzene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.004-Isopropyl toluene 10 04/12/23 21:42 6200BANG 13.3 µg/L 10.02-Hexanone 10 04/12/23 21:42 6200BANG <50.0 µg/L 50.0Methyl Ethyl Ketone (MEK)10 04/12/23 21:42 6200BANG <20.0 µg/L 20.0Methylene Chloride 10 04/12/23 21:42 6200BANG 15.0 µg/L 10.0Methyl tert-butyl ether (MTBE)10 04/12/23 21:42 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 25 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-13 92966 Matrix: 3/30/2023 14:05 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <10.0 µg/L 10.04-Methyl-2-Pentanone 10 04/12/23 21:42 6200BANG 301 µg/L 10.0Naphthalene 10 04/12/23 21:42 6200BANG 6.69 µg/L 5.00n-Propylbenzene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Styrene 10 04/12/23 21:42 6200BANG 270 µg/L 100tert-Amyl Alcohol (TAA)10 04/12/23 21:42 6200BANG <100 µg/L 100tert-Amyl Methyl Ether (TAME)10 04/12/23 21:42 6200BANG 104 µg/L 100tert-Butyl Alcohol (TBA)10 04/12/23 21:42 6200BANG <100 µg/L 100Ethyl Tertiary Butyl Ether (ETBE)10 04/12/23 21:42 6200BANG <100 µg/L 100tert-Butyl formate (TBF)10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,1,1,2-Tetrachloroethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,1,2,2-Tetrachloroethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Tetrachloroethene 10 04/12/23 21:42 6200BANG 93.9 µg/L 5.00Toluene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,2,3-Trichlorobenzene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,2,4-Trichlorobenzene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,1,1-Trichloroethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,1,2-Trichloroethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Trichloroethene 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.00Trichlorofluoromethane 10 04/12/23 21:42 6200BANG <5.00 µg/L 5.001,2,3-Trichloropropane 10 04/12/23 21:42 6200BANG 169 µg/L 5.001,2,4-Trimethylbenzene 10 04/12/23 21:42 6200BANG 53.0 µg/L 5.001,3,5-Trimethylbenzene 10 04/12/23 21:42 6200BANG <50.0 µg/L 50.0Vinyl Acetate 10 04/12/23 21:42 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 26 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:MW-13 92966 Matrix: 3/30/2023 14:05 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <5.00 µg/L 5.00Vinyl Chloride 10 04/12/23 21:42 6200BANG 221 µg/L 10.0m,p-Xylene 10 04/12/23 21:42 6200BANG 141 µg/L 5.00o-Xylene 10 04/12/23 21:42 6200BANG 362 µg/L 5.00Xylene (Total)10 04/12/23 21:42 6200B Surrogate: 4-Bromofluorobenzene 106 Limits: 70-130%04/12/23 21:4210 ANG V31972 Surrogate: Dibromofluoromethane 98.0 Limits: 70-130%04/12/23 21:4210 ANG V31972 Surrogate: 1,2-Dichloroethane - d4 94.0 Limits: 70-130%04/12/23 21:4210 ANG V31972 Surrogate: Toluene-d8 95.4 Limits: 70-130%04/12/23 21:4210 ANG V31972 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 27 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:DW-1 92967 Matrix: 3/30/2023 12:55 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <10.0 µg/L 10.0Acetone 1 04/12/23 19:26 6200BANG 2.17 µg/L 0.500Benzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Bromobenzene 1 04/12/23 19:26 6200BANG <1.00 µg/L 1.00Bromochloromethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Bromodichloromethane 1 04/12/23 19:26 6200BANG <5.00 µg/L 5.00Bromoform 1 04/12/23 19:26 6200BANG <1.00 µg/L 1.00Bromomethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500n-Butylbenzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500sec-Butyl benzene 1 04/12/23 19:26 6200BANG <2.00 µg/L 2.00tert-Butyl benzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Carbon Tetrachloride 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Chlorobenzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Chlorodibromomethane 1 04/12/23 19:26 6200BANG <1.00 µg/L 1.00Chloroethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Chloroform 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Chloromethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5002-Chlorotoluene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5004-Chlorotoluene 1 04/12/23 19:26 6200BANG <2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,2-Dibromoethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Dibromomethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,2-Dichlorobenzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,3-Dichlorobenzene 1 04/12/23 19:26 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 28 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:DW-1 92967 Matrix: 3/30/2023 12:55 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <0.500 µg/L 0.5001,4-Dichlorobenzene 1 04/12/23 19:26 6200BANG <5.00 µg/L 5.00Dichlorodifluoromethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,1-Dichloroethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,2-Dichloroethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,1-Dichloroethene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500cis-1,2-Dichloroethene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500trans-1,2-Dichloroethene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,2-Dichloropropane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,3-Dichloropropane 1 04/12/23 19:26 6200BANG <2.00 µg/L 2.002,2-Dichloropropane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,1-Dichloropropene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500cis-1,3-Dichloropropene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500trans-1,3-Dichloropropene 1 04/12/23 19:26 6200BANG <200 µg/L 200Ethanol 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Ethylbenzene 1 04/12/23 19:26 6200BANG <3.00 µg/L 3.00Hexachlorobutadiene 1 04/12/23 19:26 6200BANG 23.9 µg/L 0.500Di-Isopropyl Ether (DIPE)1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Isopropylbenzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5004-Isopropyl toluene 1 04/12/23 19:26 6200BANG <1.00 µg/L 1.002-Hexanone 1 04/12/23 19:26 6200BANG <5.00 µg/L 5.00Methyl Ethyl Ketone (MEK)1 04/12/23 19:26 6200BANG <2.00 µg/L 2.00Methylene Chloride 1 04/12/23 19:26 6200BANG 838 µg/L 100Methyl tert-butyl ether (MTBE)100 04/14/23 01:36 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 29 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:DW-1 92967 Matrix: 3/30/2023 12:55 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <1.00 µg/L 1.004-Methyl-2-Pentanone 1 04/12/23 19:26 6200BANG <1.00 µg/L 1.00Naphthalene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500n-Propylbenzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Styrene 1 04/12/23 19:26 6200BANG 69.6 µg/L 10.0tert-Amyl Alcohol (TAA)1 04/12/23 19:26 6200BANG <10.0 µg/L 10.0tert-Amyl Methyl Ether (TAME)1 04/12/23 19:26 6200BANG <10.0 µg/L 10.0tert-Butyl Alcohol (TBA)1 04/12/23 19:26 6200BANG <10.0 µg/L 10.0Ethyl Tertiary Butyl Ether (ETBE)1 04/12/23 19:26 6200BANG <10.0 µg/L 10.0tert-Butyl formate (TBF)1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Tetrachloroethene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Toluene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,1,1-Trichloroethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,1,2-Trichloroethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Trichloroethene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Trichlorofluoromethane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,2,3-Trichloropropane 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,2,4-Trimethylbenzene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.5001,3,5-Trimethylbenzene 1 04/12/23 19:26 6200BANG <5.00 µg/L 5.00Vinyl Acetate 1 04/12/23 19:26 6200BANG Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 30 of 40 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 23-095-0001 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-EL Received : 04/01/2023 Spring Rd Sporting + Shooting Report Date : 04/17/2023 Sample ID : Lab No : Sampled:DW-1 92967 Matrix: 3/30/2023 12:55 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <0.500 µg/L 0.500Vinyl Chloride 1 04/12/23 19:26 6200BANG <1.00 µg/L 1.00m,p-Xylene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500o-Xylene 1 04/12/23 19:26 6200BANG <0.500 µg/L 0.500Xylene (Total)1 04/12/23 19:26 6200B Surrogate: 4-Bromofluorobenzene 106 Limits: 70-130%04/12/23 19:261 ANG V31972 Surrogate: Dibromofluoromethane 96.4 Limits: 70-130%04/12/23 19:261 ANG V31972 Surrogate: 1,2-Dichloroethane - d4 93.4 Limits: 70-130%04/12/23 19:261 ANG V31972 Surrogate: Toluene-d8 96.0 Limits: 70-130%04/12/23 19:261 ANG V31972 Surrogate: 4-Bromofluorobenzene 108 Limits: 70-130%04/14/23 01:36100 MSA V32046 Surrogate: Dibromofluoromethane 95.8 Limits: 70-130%04/14/23 01:36100 MSA V32046 Surrogate: 1,2-Dichloroethane - d4 93.4 Limits: 70-130%04/14/23 01:36100 MSA V32046 Surrogate: Toluene-d8 95.6 Limits: 70-130%04/14/23 01:36100 MSA V32046 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 31 of 40 Quality Control Data 23-095-0001Report No: Project Description: Client ID:Withers & Ravenel Spring Rd Sporting + Shooting QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V31972QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V31971 Associated Lab Samples: 92962, 92963, 92964, 92965, 92966, 92967 LRB-V31971 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 04/12/23 15:2110.0< 10.0µg/LAcetone 04/12/23 15:210.500< 0.500µg/LBenzene 04/12/23 15:210.500< 0.500µg/LBromobenzene 04/12/23 15:211.00< 1.00µg/LBromochloromethane 04/12/23 15:210.500< 0.500µg/LBromodichloromethane 04/12/23 15:215.00< 5.00µg/LBromoform 04/12/23 15:211.00< 1.00µg/LBromomethane 04/12/23 15:210.500< 0.500µg/Ln-Butylbenzene 04/12/23 15:210.500< 0.500µg/Lsec-Butyl benzene 04/12/23 15:212.00< 2.00µg/Ltert-Butyl benzene 04/12/23 15:210.500< 0.500µg/LCarbon Tetrachloride 04/12/23 15:210.500< 0.500µg/LChlorobenzene 04/12/23 15:210.500< 0.500µg/LChlorodibromomethane 04/12/23 15:211.00< 1.00µg/LChloroethane 04/12/23 15:210.500< 0.500µg/LChloroform 04/12/23 15:210.500< 0.500µg/LChloromethane 04/12/23 15:210.500< 0.500µg/L2-Chlorotoluene 04/12/23 15:210.500< 0.500µg/L4-Chlorotoluene 04/12/23 15:212.00< 2.00µg/L1,2-Dibromo-3-Chloropropane 04/12/23 15:210.500< 0.500µg/L1,2-Dibromoethane 04/12/23 15:210.500< 0.500µg/LDibromomethane 04/12/23 15:210.500< 0.500µg/L1,2-Dichlorobenzene 04/12/23 15:210.500< 0.500µg/L1,3-Dichlorobenzene 04/12/23 15:210.500< 0.500µg/L1,4-Dichlorobenzene 04/12/23 15:215.00< 5.00µg/LDichlorodifluoromethane 04/12/23 15:210.500< 0.500µg/L1,1-Dichloroethane 04/12/23 15:210.500< 0.500µg/L1,2-Dichloroethane Page 1 of 7Date:04/17/2023 04:35 PM Page 32 of 40 Quality Control Data 23-095-0001Report No: Project Description: Client ID:Withers & Ravenel Spring Rd Sporting + Shooting QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V31972QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V31971 Associated Lab Samples: 92962, 92963, 92964, 92965, 92966, 92967 LRB-V31971 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 04/12/23 15:210.500< 0.500µg/L1,1-Dichloroethene 04/12/23 15:210.500< 0.500µg/Lcis-1,2-Dichloroethene 04/12/23 15:210.500< 0.500µg/Ltrans-1,2-Dichloroethene 04/12/23 15:210.500< 0.500µg/L1,2-Dichloropropane 04/12/23 15:210.500< 0.500µg/L1,3-Dichloropropane 04/12/23 15:212.00< 2.00µg/L2,2-Dichloropropane 04/12/23 15:210.500< 0.500µg/L1,1-Dichloropropene 04/12/23 15:210.500< 0.500µg/Lcis-1,3-Dichloropropene 04/12/23 15:210.500< 0.500µg/Ltrans-1,3-Dichloropropene 04/12/23 15:21200< 200µg/LEthanol 04/12/23 15:210.500< 0.500µg/LEthylbenzene 04/12/23 15:213.00< 3.00µg/LHexachlorobutadiene 04/12/23 15:210.500< 0.500µg/LDi-Isopropyl Ether (DIPE) 04/12/23 15:210.500< 0.500µg/LIsopropylbenzene 04/12/23 15:210.500< 0.500µg/L4-Isopropyl toluene 04/12/23 15:211.00< 1.00µg/L2-Hexanone 04/12/23 15:215.00< 5.00µg/LMethyl Ethyl Ketone (MEK) 04/12/23 15:212.00< 2.00µg/LMethylene Chloride 04/12/23 15:211.00< 1.00µg/LMethyl tert-butyl ether (MTBE) 04/12/23 15:211.00< 1.00µg/L4-Methyl-2-Pentanone 04/12/23 15:211.00< 1.00µg/LNaphthalene 04/12/23 15:210.500< 0.500µg/Ln-Propylbenzene 04/12/23 15:210.500< 0.500µg/LStyrene 04/12/23 15:2110.0< 10.0µg/Ltert-Amyl Alcohol (TAA) 04/12/23 15:2110.0< 10.0µg/Ltert-Amyl Methyl Ether (TAME) 04/12/23 15:2110.0< 10.0µg/Ltert-Butyl Alcohol (TBA) 04/12/23 15:2110.0< 10.0µg/LEthyl Tertiary Butyl Ether (ETBE) Page 2 of 7Date:04/17/2023 04:35 PM Page 33 of 40 Quality Control Data 23-095-0001Report No: Project Description: Client ID:Withers & Ravenel Spring Rd Sporting + Shooting QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V31972QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V31971 Associated Lab Samples: 92962, 92963, 92964, 92965, 92966, 92967 LRB-V31971 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 04/12/23 15:2110.0< 10.0µg/Ltert-Butyl formate (TBF) 04/12/23 15:210.500< 0.500µg/L1,1,1,2-Tetrachloroethane 04/12/23 15:210.500< 0.500µg/L1,1,2,2-Tetrachloroethane 04/12/23 15:210.500< 0.500µg/LTetrachloroethene 04/12/23 15:210.500< 0.500µg/LToluene 04/12/23 15:210.500< 0.500µg/L1,2,3-Trichlorobenzene 04/12/23 15:210.500< 0.500µg/L1,2,4-Trichlorobenzene 04/12/23 15:210.500< 0.500µg/L1,1,1-Trichloroethane 04/12/23 15:210.500< 0.500µg/L1,1,2-Trichloroethane 04/12/23 15:210.500< 0.500µg/LTrichloroethene 04/12/23 15:210.500< 0.500µg/LTrichlorofluoromethane 04/12/23 15:210.500< 0.500µg/L1,2,3-Trichloropropane 04/12/23 15:210.500< 0.500µg/L1,2,4-Trimethylbenzene 04/12/23 15:210.500< 0.500µg/L1,3,5-Trimethylbenzene 04/12/23 15:215.00< 5.00µg/LVinyl Acetate 04/12/23 15:210.500< 0.500µg/LVinyl Chloride 04/12/23 15:211.00< 1.00µg/Lm,p-Xylene 04/12/23 15:210.500< 0.500µg/Lo-Xylene 04/12/23 15:214-Bromofluorobenzene (S)109 70-130 04/12/23 15:21Dibromofluoromethane (S)95.8 70-130 04/12/23 15:211,2-Dichloroethane - d4 (S)93.4 70-130 04/12/23 15:21Toluene-d8 (S)97.6 70-130 Page 3 of 7Date:04/17/2023 04:35 PM Page 34 of 40 Quality Control Data 23-095-0001Report No: Project Description: Client ID:Withers & Ravenel Spring Rd Sporting + Shooting QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V31972QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V31971 LCS-V31971 LCSD-V31971Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 32.8 82.083.233.340.0µg/LAcetone 40-160 1.5 20.0 21.8 10911122.220.0µg/LBenzene 70-130 1.8 20.0 21.6 10811422.720.0µg/LBromobenzene 70-130 4.9 20.0 21.1 10610621.120.0µg/LBromochloromethane 70-130 0.0 20.0 18.9 94.594.518.920.0µg/LBromodichloromethane 70-130 0.0 20.0 17.6 88.090.018.020.0µg/LBromoform 70-130 2.2 20.0 20.3 10210921.820.0µg/LBromomethane 60-140 7.1 20.0 21.0 10510721.420.0µg/Ln-Butylbenzene 70-130 1.8 20.0 20.7 10410621.120.0µg/Lsec-Butyl benzene 70-130 1.9 20.0 20.1 10110320.520.0µg/Ltert-Butyl benzene 70-130 1.9 20.0 17.7 88.595.019.020.0µg/LCarbon Tetrachloride 70-130 7.0 20.0 20.1 10110721.320.0µg/LChlorobenzene 70-130 5.7 20.0 16.7 83.592.518.520.0µg/LChlorodibromomethane 70-130 10.2 20.0 21.3 10711222.420.0µg/LChloroethane 60-140 5.0 20.0 20.8 10410621.220.0µg/LChloroform 70-130 1.9 20.0 20.6 10310520.920.0µg/LChloromethane 60-140 1.4 20.0 21.4 10710821.520.0µg/L2-Chlorotoluene 70-130 0.4 20.0 21.5 10811122.220.0µg/L4-Chlorotoluene 70-130 3.2 20.0 19.8 99.094.518.920.0µg/L1,2-Dibromo-3-Chloropropane 70-130 4.6 20.0 19.3 96.597.019.420.0µg/L1,2-Dibromoethane 70-130 0.5 20.0 20.5 10310320.620.0µg/LDibromomethane 70-130 0.4 20.0 21.2 10610721.320.0µg/L1,2-Dichlorobenzene 70-130 0.4 20.0 21.0 10510521.020.0µg/L1,3-Dichlorobenzene 70-130 0.0 20.0 20.9 10510821.520.0µg/L1,4-Dichlorobenzene 70-130 2.8 20.0 16.6 83.086.017.220.0µg/LDichlorodifluoromethane 60-140 3.5 20.0 21.0 10510921.720.0µg/L1,1-Dichloroethane 70-130 3.2 20.0 Page 4 of 7Date:04/17/2023 04:35 PM Page 35 of 40 Quality Control Data 23-095-0001Report No: Project Description: Client ID:Withers & Ravenel Spring Rd Sporting + Shooting QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V31972QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V31971 LCS-V31971 LCSD-V31971Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 20.0 10097.019.420.0µg/L1,2-Dichloroethane 70-130 3.0 20.0 19.2 96.098.019.620.0µg/L1,1-Dichloroethene 70-130 2.0 20.0 22.0 11011022.020.0µg/Lcis-1,2-Dichloroethene 70-130 0.0 20.0 20.7 10410721.420.0µg/Ltrans-1,2-Dichloroethene 70-130 3.3 20.0 21.3 10711022.020.0µg/L1,2-Dichloropropane 70-130 3.2 20.0 20.6 10310721.420.0µg/L1,3-Dichloropropane 70-130 3.8 20.0 20.4 10210220.320.0µg/L2,2-Dichloropropane 70-130 0.4 20.0 22.7 11411422.720.0µg/L1,1-Dichloropropene 70-130 0.0 20.0 21.0 10510821.620.0µg/Lcis-1,3-Dichloropropene 70-130 2.8 20.0 20.2 10110621.120.0µg/Ltrans-1,3-Dichloropropene 70-130 4.3 20.0 525 10598.8494500µg/LEthanol 60-140 6.0 20.0 19.7 98.510120.220.0µg/LEthylbenzene 70-130 2.5 20.0 19.2 96.093.518.720.0µg/LHexachlorobutadiene 70-130 2.6 20.0 21.3 10711021.920.0µg/LDi-Isopropyl Ether (DIPE)70-130 2.7 20.0 21.3 10711022.020.0µg/LIsopropylbenzene 70-130 3.2 20.0 20.8 10410621.120.0µg/L4-Isopropyl toluene 70-130 1.4 20.0 18.5 92.594.018.820.0µg/L2-Hexanone 60-140 1.6 20.0 19.0 95.093.518.720.0µg/LMethyl Ethyl Ketone (MEK)60-140 1.5 20.0 22.3 11211322.520.0µg/LMethylene Chloride 70-130 0.8 20.0 20.2 10110320.520.0µg/LMethyl tert-butyl ether (MTBE)70-130 1.4 20.0 21.8 10911022.020.0µg/L4-Methyl-2-Pentanone 60-140 0.9 20.0 19.0 95.097.019.420.0µg/LNaphthalene 70-130 2.0 20.0 21.1 10610721.420.0µg/Ln-Propylbenzene 70-130 1.4 20.0 20.6 10311021.920.0µg/LStyrene 70-130 6.1 20.0 21.9 11010320.520.0µg/Ltert-Amyl Alcohol (TAA)40-140 6.6 20.0 42.8 10710742.740.0µg/Ltert-Amyl Methyl Ether (TAME)40-140 0.2 20.0 Page 5 of 7Date:04/17/2023 04:35 PM Page 36 of 40 Quality Control Data 23-095-0001Report No: Project Description: Client ID:Withers & Ravenel Spring Rd Sporting + Shooting QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V31972QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V31971 LCS-V31971 LCSD-V31971Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 38.6 96.589.035.640.0µg/Ltert-Butyl Alcohol (TBA)40-140 8.0 20.0 43.2 10811043.840.0µg/LEthyl Tertiary Butyl Ether (ETBE)70-130 1.3 20.0 43.0 10810843.040.0µg/Ltert-Butyl formate (TBF)40-140 0.0 20.0 19.4 97.098.519.720.0µg/L1,1,1,2-Tetrachloroethane 70-130 1.5 20.0 21.7 10911222.320.0µg/L1,1,2,2-Tetrachloroethane 70-130 2.7 20.0 19.5 97.597.519.520.0µg/LTetrachloroethene 70-130 0.0 20.0 21.6 10811021.920.0µg/LToluene 70-130 1.3 20.0 19.0 95.010521.020.0µg/L1,2,3-Trichlorobenzene 70-130 10.0 20.0 17.7 88.593.518.720.0µg/L1,2,4-Trichlorobenzene 70-130 5.4 20.0 19.7 98.510120.120.0µg/L1,1,1-Trichloroethane 70-130 2.0 20.0 21.5 10811222.420.0µg/L1,1,2-Trichloroethane 70-130 4.1 20.0 20.7 10410621.220.0µg/LTrichloroethene 70-130 2.3 20.0 18.2 91.094.518.920.0µg/LTrichlorofluoromethane 60-140 3.7 20.0 19.4 97.010220.320.0µg/L1,2,3-Trichloropropane 70-130 4.5 20.0 20.9 10510721.420.0µg/L1,2,4-Trimethylbenzene 70-130 2.3 20.0 21.0 10511021.920.0µg/L1,3,5-Trimethylbenzene 70-130 4.1 20.0 23.3 11711222.320.0µg/LVinyl Acetate 60-140 4.3 20.0 20.5 10310320.620.0µg/LVinyl Chloride 60-140 0.4 20.0 42.2 10610943.540.0µg/Lm,p-Xylene 70-130 3.0 20.0 20.1 10110420.820.0µg/Lo-Xylene 70-130 3.4 20.0 1071064-Bromofluorobenzene (S)70-130 97.896.4Dibromofluoromethane (S)70-130 95.695.01,2-Dichloroethane - d4 (S)70-130 97.295.8Toluene-d8 (S)70-130 Page 6 of 7Date:04/17/2023 04:35 PM Page 37 of 40 Quality Control Data 23-095-0001Report No: Project Description: Client ID:Withers & Ravenel Spring Rd Sporting + Shooting QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V32046QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V32045 Associated Lab Samples: 92963, 92964, 92965, 92967 LRB-V32045 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 04/13/23 19:430.500< 0.500µg/LBenzene 04/13/23 19:431.00< 1.00µg/LMethyl tert-butyl ether (MTBE) 04/13/23 19:4310.0< 10.0µg/Ltert-Amyl Alcohol (TAA) 04/13/23 19:4310.0< 10.0µg/Ltert-Butyl Alcohol (TBA) 04/13/23 19:434-Bromofluorobenzene (S)109 70-130 04/13/23 19:43Dibromofluoromethane (S)96.2 70-130 04/13/23 19:431,2-Dichloroethane - d4 (S)92.0 70-130 04/13/23 19:43Toluene-d8 (S)93.8 70-130 LCS-V32045 LCSD-V32045Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 21.8 10911422.720.0µg/LBenzene 70-130 4.0 20.0 22.2 11111022.020.0µg/LMethyl tert-butyl ether (MTBE)70-130 0.9 20.0 17.4 87.059.511.920.0µg/Ltert-Amyl Alcohol (TAA)40-140 37.5*20.0 39.9 99.790.236.140.0µg/Ltert-Butyl Alcohol (TBA)40-140 10.0 20.0 1071054-Bromofluorobenzene (S)70-130 96.296.0Dibromofluoromethane (S)70-130 92.694.01,2-Dichloroethane - d4 (S)70-130 96.496.0Toluene-d8 (S)70-130 Page 7 of 7* QC Fail Date:04/17/2023 04:35 PM Page 38 of 40 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:23-095-0001 Withers & Ravenel 01221 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:IRT15 1.8C Chain of Custody (COC) present?Yes No Yes No Not Present Yes No Not Present Yes No COC agrees with sample label(s)? Yes No COC properly completed Samples in proper containers? Sample containers intact? Sufficient sample volume for indicated test(s)? All samples received within holding time? Cooler temperature in compliance? Yes No Yes No Yes No Yes No Yes No Yes NoCooler/Samples arrived at the laboratory on ice. Samples were considered acceptable as cooling process had begun. Yes No Yes No N/A Yes No N/A Yes No N/ASoil VOA method 5035 – compliance criteria met Water - Sample containers properly preserved Water - VOA vials free of headspace Yes No N/A Trip Blanks received with VOAs Low concentration EnCore samplers (48 hr) High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d) High concentration container (48 hr) Custody seals intact on shipping container/cooler? Custody seals intact on sample bottles? Number of coolers/boxes received Yes No 1 Signature:Angelo Norvell Date & Time:04/05/2023 09:18:16 Special precautions or instructions included? Comments: Page 39 of 40 Page 40 of 40 WithersRavenel Our People. Your Success.    APPENDIX D    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. WithersRavenel Our People. Your Success.    APPENDIX E    GSI MANN‐KENDALL TOOLKITS  Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-1 MW-2 MW-3 MW-4 MW-13 Sampling Sampling Event Date 1 3-Aug-05 314 0.25 0.25 2 17-Jun-08 0.25 0.25 0.25 3 13-Jan-09 148 0.25 0.25 4 7-May-09 0.25 0.25 0.25 5 24-Jun-10 2.5 0.25 0.25 6 14-Dec-10 2.1 0.25 0.25 7 20-Jun-11 0.98 0.25 0.25 8 6-Dec-11 0.92 0.25 0.25 9 7-Jun-12 2.9 1.5 0.71 10 31-Dec-12 19 0.25 1.7 11 11-Jun-13 81 0.25 3.9 0.25 12 18-Dec-13 130 15 0.25 14 13 30-Jun-14 260 12 14 12 14 24-Jun-15 152 0.085 6.4 18.3 15 2-Jun-16 153 0.065 95.3 5.6 14.1 16 9-Dec-16 40.1 7.6 14.6 33.7 17 19-Jun-17 33.5 1 12.2 3.8 18 18-Dec-17 0.66 0.64 32 9 19 25-Jun-18 30.7 0.7 2.6 16.4 20 3-Dec-18 64.3 2 125 29.2 21 16-Jun-21 1920 9.5 86.7 26.1 26.7 22 15-Jun-22 1120 419 6.18 151 40.9 23 1-Dec-22 2300 67.4 177 75.3 24 30-Mar-23 2980 465 168 268 182 25 Coefficient of Variation:2.01 1.35 2.13 1.97 1.37 Mann-Kendall Statistic (S):119 8 147 204 52 Confidence Factor:99.9%95.8%>99.9%>99.9%100.0% Concentration Trend:Increasing Increasing Increasing Increasing Increasing Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water, 41(3):355-367, 2003. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI Environmental Inc., www.gsi-net.com BENZENE CONCENTRATION (ug/L) 24-Apr-23 Springs Road Sporting & Shooting Benzene GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis WithersRavenel 27716 0.01 0.1 1 10 100 1000 10000 01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (ug/L)Sampling Date MW-1 MW-2 MW-3 MW-4 MW-13 Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-1 MW-2 MW-3 MW-4 MW-13 DW-1 Sampling Sampling Event Date 1 3-Aug-05 314 819 234 17.8 2 17-Jun-08 0.25 0.25 0.25 0.25 3 13-Jan-09 148 208 25 48.9 4 7-May-09 0.25 270 0.25 66.8 5 24-Jun-10 2.5 7.5 13 58.6 6 14-Dec-10 2.1 830 2.6 42 7 20-Jun-11 0.98 66 0.25 28 8 6-Dec-11 0.92 1.4 1400 45 9 7-Jun-12 2.9 1300 0.59 31 10 31-Dec-12 19 3600 12 2.2 11 11-Jun-13 81 3500 0.25 320 2.3 12 18-Dec-13 130 520 0.25 430 0.68 13 30-Jun-14 260 180 2.6 370 1 14 24-Jun-15 4.6 0.92 372 2 1.6 15 2-Jun-16 5.3 0.065 16.3 245 119 10.5 16 9-Dec-16 1.9 272 15.9 72.7 108 17 19-Jun-17 2.5 55.7 9.2 66.4 270 18 18-Dec-17 5.5 218 9.2 149 9.6 19 25-Jun-18 1.8 213 0.96 153 123 20 3-Dec-18 1.5 221 25.7 158 188 21 16-Jun-21 5 29.9 48.7 4.39 28.6 1180 22 15-Jun-22 5 33 16.3 28.4 4.96 701 23 1-Dec-22 5 21.4 31.5 5 1120 24 30-Mar-23 5 31.1 24.3 38.9 15 838 25 Coefficient of Variation:2.05 0.89 1.85 3.28 0.98 1.77 Mann-Kendall Statistic (S):16 6 -47 62 -44 100 Confidence Factor:64.4%88.3%87.2%93.4%99.7%99.4% Concentration Trend:No Trend No Trend No Trend Prob. Increasing Decreasing Increasing Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water, 41(3):355-367, 2003. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. MTBE CONCENTRATION (ug/L) GSI Environmental Inc., www.gsi-net.com GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis 24-Apr-23 27716 Springs Road Sporting & Shooting MTBE WithersRavenel 0.01 0.1 1 10 100 1000 10000 01/04 10/06 07/09 04/12 12/14 09/17 06/20 03/23 12/25Concentration (ug/L)Sampling Date MW-1 MW-2 MW-3 MW-4 MW-13 DW-1