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HomeMy WebLinkAboutFA-7659_29956_CA_MRP_20240503  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 | Pittsboro | Raleigh | Southern Pines | Wilmington          MONITORING REPORT      J&J Mart  NCDEQ Incident # 29956  UST # FA‐7659  905 S. Main Street  Star, Montgomery County, North Carolina  WithersRavenel Project No. 23‐0307‐CR                                            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 3, 2024   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 | Pittsboro | Raleigh | Southern Pines | Wilmington          May 3, 2024    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:   Mr. Hassan Osman    Re:   Monitoring Report   J&J Mart  905 S. Main Street  Star, Montgomery County, North Carolina  Groundwater Incident Number: 29956  UST Number: FA‐7659  WR Project Number:  23‐0307‐CR    Mr. Osman,  WithersRavenel, Inc. (WR) has completed this Monitoring Report to document well installation  and groundwater sampling activities completed at the J&J Mart site in association with our  proposal, numbered TA‐03, for the above referenced site, approved by the Federal & State Lead  Program on January 22, 2024.   The enclosed report summarizes the 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     David C. Vail, P.E. Elizabeth A. Allyn, P.G.  Environmental Scientist II Environmental Project Geologist II    WithersRavenel Our People. Your Success.    J&J Mart – NCDEQ Incident #29956 WR Project # 23‐0307‐CR  Monitoring Report May 2024  i    TABLE OF CONTENTS     SECTION A. SITE INFORMATION ..................................................................................................................... 1  SECTION B. EXECUTIVE SUMMARY ................................................................................................................ 3  SECTION C. SITE HISTORY AND CHARACTERIZATION ............................................................................ 5  SECTION D. MONITORING WELL ABANDONMENT/INSTALLATION – FEBRUARY 2024 ............ 8  SECTION E. AFVR EVENT – FEBRUARY 2024 ............................................................................................... 8  SECTION F. GROUNDWATER SAMPLING – MARCH 2024 ...................................................................... 9  SECTION F. CONCLUSIONS AND RECOMMENDATIONS ..................................................................... 10    FIGURES   Figure 1 General Location Map  Figure 2 Site Map  Figure 3 Potential Receptor Map  Figure 4 Groundwater Elevation Contour Map – March 2024  Figure 5 Groundwater Analytical Results Map – March 2024  Figure 6 Benzene Isoconcentration Map – March 2024      TABLES   Table B‐1 Site History: UST/AST System & Other Release Information  Table B‐3 Summary of Soil Analytical Results  Table B‐4 Summary of Groundwater Analytical Results  Table B‐5A Public & Private Water Supply Well Information  Table B‐7 Monitoring Well Construction Information and Liquid Level Data      APPENDICES   Appendix A Field Notes & Photographic Record  Appendix B Boring Logs & Monitoring Well Construction Records  Appendix C AFVR Calculations & Disposal Manifest  Appendix D Laboratory Analytical Report & Chain‐of‐Custody  Appendix E General Standard Operating Procedures  WithersRavenel Our People. Your Success.  J&J Mart – NCDEQ Incident #29956 WR Project # 23‐0307‐CR  Monitoring Report May 2024  1      SECTION A. SITE INFORMATION   1. Site Identification  Date of Report:  May 3, 2024  Facility I.D.: 00‐0‐0000022229  Incident No.: 29956  UST No.: FA‐7659  Site Risk: Intermediate  Site Rank: I225D  Land Use Category: Commercial  Site Name: J&J Mart  Site Location: 905 S. Main Street  Nearest City/Town: Star  County: Montgomery  Description of Geographical Data Point:  On‐site building  Location Method:  Google Earth  Latitude: 35.381840° N  Longitude: 79.778947° W  2. Contact Information  UST Owner: J&J Mart  Address: Not Applicable  Phone: Not Applicable     Property Owner: Jose & Maria Munoz  Address: 208 King Street, Star, NC 27356  Phone: 336‐267‐8590     Property Occupant: Vacant / Pallet Breakdown Shop  Address: 905 S. Main Street, Star, NC 27356  Phone: 336‐460‐3736     Consultant/Contractor: WithersRavenel  Address:  115 MacKenan Drive, Cary, NC 27511  Phone:  919‐469‐3340     Analytical Laboratory: Waypoint Analytical, LLC   State Certification Number: ENV402  Address: 449 Springbrook Rd., Charlotte, NC 28217  Phone: 704‐529‐6364      WithersRavenel Our People. Your Success.  J&J Mart – NCDEQ Incident #29956 WR Project # 23‐03017‐CR  Monitoring Report May 2024  3    SECTION B. EXECUTIVE SUMMARY    1. Summary of Activities Associated with Current TA    WithersRavenel, Inc. (WR) conducted a soil and groundwater sampling event at the J&J Mart site  located at 905 S. Main St. in Star, Montgomery County, North Carolina in association with TA‐03  under NCDEQ Contract #N70522‐C.   The scope of work for this project included the  abandonment of monitoring well MW‐1, installation of replacement MW‐1 and two additional  monitoring wells, the performance of an aggressive fluid and vapor recovery (AFVR) event, and a  groundwater sampling event.    2. Soil, Groundwater and LNAPL Assessment Information     Soils  Soil samples were obtained from direct‐push boring locations in the vicinity of the 10,000‐gallon  compartmentalized UST (two 4,000‐gallon gasoline compartments and one 2,000‐gallon diesel  compartment) on August 25, 2023. Soil samples were collected continuously at four‐foot intervals  with the exception of the interval collected from 20 to 25 feet below ground surface (bgs). Soil  samples were screened using a photoionization detector (PID). From each boring, one sample  between the interval of 0 to 12.5 feet bgs and one sample between the interval of 12.5 and 25  feet bgs exhibiting the highest PID reading were submitted for analysis by Environmental  Protection Agency (EPA) Method 8260D. The two soil samples collected from the boring at the  western end of the UST contained naphthalene above the Residential Maximum Soil Contaminant  Concentration (MSCC). Three of the borings (a total of four samples) contained compounds above  the Soil‐to‐Groundwater MSCCs. None of the compounds exceeded the established  Industrial/Commercial MSCCs.    Groundwater   Laboratory analytical results from the March 13, 2024 sampling event revealed the following:   Monitoring well MW‐1R contained the following compounds above the Gross  Contamination Levels (GCLs): benzene at 34,900 micrograms per liter (g/L), 1,2‐ dibromoethane (EDB) at 256 g/L, and 1,2‐dichloroethane (1,2‐DCA)  at 419 g/L.    Monitoring well MW‐1R also contained the following compounds above the North  Carolina Groundwater Quality Standards (2L Standards): ethylbenzene at 4,310 g/L,  isopropyl ether at 7,790 g/L, isopropylbenzene at 185 g/L, 2‐methyl butyl ketone (MBK)  at 206 g/L, methyl tert‐butyl ether (MTBE) at 9,900 g/L, 4‐methyl‐2‐pentanone (MIBK)  at  110 g/L, naphthalene at 665 g/L, n‐propylbenzene at 436 g/L, toluene at 60,600  g/L, 1,2,4‐trimethylbenzene at 2,890 g/L, 1,3,5‐trimethylbenzene at 720 g/L, and total  xylenes at 21,600 g/L.   Monitoring well MW‐2 contained the following compounds above the 2L Standards:  benzene at 475 g/L, ethylbenzene at 5,460 g/L, isopropylbenzene at 228 g/L,  naphthalene at 775 g/L, n‐propylbenzene at 530 g/L, toluene at 29,300 g/L, 1,2,4‐ trimethylbenzene at 3,520 g/L, 1,3,5‐trimethylbenzene at 849 g/L, and total xylenes at  26,800 g/L.   Monitoring well MW‐3 contained the following compounds above the 2L Standards:  benzene at 18.9 g/L, naphthalene at 6.77 g/L, and toluene at 32,600 g/L.  WithersRavenel Our People. Your Success.  J&J Mart – NCDEQ Incident #29956 WR Project # 23‐03017‐CR  Monitoring Report May 2024  4    Light Non‐Aqueous Phase Liquid (LNAPL)  LNAPL was reportedly detected at a thickness of 4‐inches by a consultant on‐site to provide a  UST removal quote in 2015.      3.       Receptor Information    S&ME previously identified ten water supply wells within 1,000 feet of the source area, one of  which was active, WSW‐6A, located 900 feet west‐northwest of the source area.  Based on the  information obtained during the updated receptor survey, one active water supply well (WSW‐ 6A), one well of unknown usage (WSW‐4), and six inactive wells (WSW‐1, WSW‐2, WSW‐3,  WSW‐6, WSW‐8, and WSW‐9) were identified. Previously identified water supply wells WSW‐5  and WSW‐7 were outside the 1,000‐foot radius as determined from the location of MW‐1.  The  site is not located within a Wellhead Protection Area.        WR inquired with the Town of Star Public Works Department to obtain information regarding the  connection status of the properties within 1,000 ft of the site.  The Town of Star indicated that all  properties within 1,000 feet of the source area were serviced by the municipal water supply and  they were unaware of in‐use water supply wells in the area.  However, the properties addressed  on Alma Drive (WSW‐4 and WSW‐5) and Allen Drive (WSW‐6 and WSW‐6A), both of which are  private roads, do not have municipal connections. The properties where water supply wells WSW‐ 4 and WSW‐5 are located are reportedly vacant. Water supply well WSW‐6 went dry and was  replaced by WSW‐6A which is currently in use.     No additional receptors (streams or wetlands) were identified within 500‐ft of the source area.   There is an unnamed pond approximately 550 feet west of the site.    4. Remediation Activities    Based on currently available information, the following remediation activities have occurred at the  site:   During the removal of two 1,000‐gallon gasoline USTs, approximately 48 cubic yards of  impacted soil was removed.   In February 2024, an AFVR event was conducted which removed 572 gallons of impacted  groundwater and emissions through volatilization of recovered product were calculated to  be approximately 3.56 pounds (0.57 gallons).    5. Recommendations    Based on the results of assessment and monitoring activities conducted at the site in association  with this TA, WR recommends the following:   Consider performing an injection to reduce contaminant concentrations.   Conduct periodic groundwater monitoring.       WithersRavenel Our People. Your Success.  J&J Mart – NCDEQ Incident #29956 WR Project # 23‐03017‐CR  Monitoring Report May 2024  5    SECTION C. SITE HISTORY AND CHARACTERIZATION    The following information summarizes the site history and characterization.      1. UST Information  In May 1994, during the removal of two 1,000‐gallon gasoline USTs installed in the 1960s, a  release was discovered. This release is associated with Smith & Son Garage (NCDEQ incident  number 14008). In September 1995, two 10,000‐gallon gasoline USTs installed in approximately  1976 were removed from the site. A release was not identified during the removal of the two  10,000‐gallon gasoline USTs. In December 1995, one 10,000‐gallon compartmentalized UST was  installed in the vicinity of the former UST excavation areas. In 2015, while conducting a site visit  to prepare a UST removal quote, Blue Ridge Environmental Services discovered four inches of  LNAPL in monitoring well MW‐1. The presence of LNAPL was considered to be a new release and  was assigned NCDEQ Incident #29956 (J&J Mart). A small AST was observed during the site  reconnaissance activities in July 2016.  However, this AST was no longer present during WR’s site  visit in June 2021. The 10,000‐gallon compartmentalized UST was abandoned‐in‐place on  November 27, 2023.  The site location is shown on Figure 1. Figure 2 shows the location of the historical UST systems.  Historical UST and AST information is provided in Table B‐1.      2.       Description of Release/General Assessment History  The following summary of the assessment history is based on WR’s review of historical files for  the subject incident including:  • UST Closure Report and Soil Test Results (August 30, 1994) by Environmental Engineering  Services.  This report was prepared to document the removal of two 1,000‐gallon gasoline USTs for the  Smith & Sons Garage (NCDEQ Incident #14008). Samples collected from beneath the USTs  showed considerable levels of hydrocarbon contamination. TPH‐GRO concentrations ranged  from non‐detect to 15,000 mg/kg and TPH‐DRO ranged from non‐detect to 1,710 mg/kg.  During the removal of the impacted soils, caving of soils beneath the garage building prevented  additional excavation. Approximately 48 cubic yards of impacted soil was stockpiled. The tank  pit was backfilled with clean soils.  • Site Reconnaissance and Receptor Survey (December 1, 2016) by S&ME.  This report documented the results of a receptor survey conducted in July 2016.  The receptor  survey identified ten water supply wells (WSW‐1 through WSW6, WSW‐6A, and WSW‐7  through WSW‐9) within 1,000 feet of the site with one of the water supply wells being active  (WSW‐6A).  The report indicated municipal water was available to the properties within 1,000  feet of the source area.   • Geophysical Survey Report (August 16, 2017) by S&ME.   S&ME completed a geophysical survey using time domain electromagnetics (TDEM) and  ground penetrating radar (GPR) to accurately locate the UST to determine if removal is  WithersRavenel Our People. Your Success.  J&J Mart – NCDEQ Incident #29956 WR Project # 23‐03017‐CR  Monitoring Report May 2024  6    possible. The existing 10,000‐gallon UST was located and pea gravel was determined to be in  the tank pit and was identified within four feet of the building. Based on the proximity of the  UST to the building, S&ME recommended abandoning the UST in place.   • Receptor Survey Update Letter Report (August 13, 2021) by WR.   WR completed an updated receptor survey in July 2021. The Town of Star Public Works  Department indicated that all properties within 1,000 feet of the site are serviced by the  municipal water supply. WR determined that the properties located on Alma Drive (WSW‐4  and WSW‐5) and Allen Drive (WSW‐6 and WSW‐6A), both of which are private roads, do not  have municipal connections. The properties where WSW‐4 and WSW‐5 are located are  reportedly vacant. Water supply well WSW‐6 went dry and was replaced by WSW‐6A which  is currently in use.   • UST Abandonment Bid Requests (January 31, 2022) by WR.   WR prepared a bid request for the abandonment‐in‐place of the 10,000‐gallon  compartmentalized UST located adjacent to the site building. Due to the potential for  contamination to exist beneath the pump island, based on observed contaminant  concentrations in monitoring well MW‐1, WR attempted to contact the property owner  regarding the removal of the canopy associated with the pump island to complete over‐ excavation in this area. However, WR could not reach the property owner.   Monitoring Report (October 2, 2023) by WR.   WR conducted soil sampling around the 10,000‐gallon compartmentalized UST in advance of  the UST abandonment activities. The soil samples collected from the western end of the UST  exhibited concentrations of naphthalene above the Residential MSCC, but not the  Industrial/Commercial MSCC. Monitoring well MW‐1 was sampled and contained benzene  and EDB above the GCLs. Several other petroleum compounds were present above the 2L  Standards.    UST Closure Report (January 22, 2024) by WR.   WR supervised the abandonment‐in‐place of the 10,000‐gallon compartmentalized UST  located adjacent to the site building between November 27 and 28, 2023. As part of the  abandonment activities, the dispensers and associated product piping and vent lines were  removed from the site.       3.  Brief Description of Site Characteristics  The property is located at 905 South Main Street in Star, Montgomery County, North Carolina  (Figure 2). Site photographs are included in Appendix A. The property includes a single‐story slab‐ on‐grade concrete block structure, reportedly constructed in 1950.  The portion of the site building  formerly occupied by the convenient store is currently vacant. The rear of the site is used for pallet  breakdown and storage.             Surface coverings at the location include the site structure, concrete, and gravel areas  (approximately 30% of the area) and grassy areas (approximately 70%). The NC PIN for the  property is 7569 00 74 8767 and the site is approximately 1.65‐acres.    WithersRavenel Our People. Your Success.  J&J Mart – NCDEQ Incident #29956 WR Project # 23‐03017‐CR  Monitoring Report May 2024  7    Surface drainage through the area generally follows topography or is channeled through wet  weather ditches running parallel to South Main Street.  At the site location, surface drainage flows  to the east‐northeast.         4.       Information on Receptors/Potential Receptors  S&ME previously identified ten water supply wells within 1,000 feet of the source area, one of  which was active, WSW‐6A, located 900 feet west‐northwest of the source area.  Based on the  information obtained during the updated receptor survey, one active water supply well (WSW‐ 6A), one well of unknown usage (WSW‐4), and six inactive wells (WSW‐1, WSW‐2, WSW‐3,  WSW‐6, WSW‐8, and WSW‐9) were identified. Previously identified water supply wells WSW‐5  and WSW‐7 were outside the 1,000‐foot radius as determined from the location of MW‐1.      WR inquired with the Town of Star Public Works Department to obtain information regarding the  connection status of the properties within 1,000 ft of the site.  The Town of Star indicated that all  properties within 1,000 feet of the source area were serviced by the municipal water supply and  they were unaware of in‐use water supply wells in the area.  However, the properties addressed  on Alma Drive (WSW‐4 and WSW‐5) and Allen Drive (WSW‐6 and WSW‐6A), both of which are  private roads, do not have municipal connections. The properties where water supply wells WSW‐ 4 and WSW‐5 are located are reportedly vacant. Water supply well WSW‐6 went dry and was  replaced by WSW‐6A which is currently in use. Water supply well information is provided on Table  B‐5A, while locations of the wells are shown on Figure 3.     Although subsurface utilities were identified in the site vicinity, the depth to water at the site is  approximately 30 feet below ground surface.  Therefore, these utilities are not expected to be  pathways for contaminant transport.    No additional receptors (streams or wetlands) were identified within 500‐ft of the source area.   There is an unnamed pond approximately 550 feet west of the site.    The site is not located within a Wellhead Protection Area.        Examination of the U.S. Geological Survey 7.5‐minute series topographic maps of Star and Biscoe  North Carolina Quadrangles, the site is located approximately 610 feet above mean sea level with  a topographic relief to the east‐northeast, towards Cotton Creek approximately 1,200 feet from  the source area (Figure 1).      5.       Regional and Site Geology and Hydrology  The site is located within the Piedmont Physiographic Province of North Carolina. More  specifically, the site is underlain by the Carolina Slate Belt composed of metamorphosed argillite,  mudstone, volcanic sandstone, conglomerate, and volcanic rock of the Cambrian/Late Proterozoic.  According to the United States Department of Agricultural (USDA) Natural Resources  Conservation Service (NRCS) Web Soil Survey, the source area is underlain by the Georgeville‐ Urban land complex (2 to 10 percent slopes).  Georgeville‐Urban land complex is well drained,  WithersRavenel Our People. Your Success.  J&J Mart – NCDEQ Incident #29956 WR Project # 23‐03017‐CR  Monitoring Report May 2024  8    found on interfluves on summits and shoulders and the parent material is residuum weathered  from metavolcanics and/or argillite.      The soil borings completed in August 2023 and well installations completed in February 2024  indicate that the site is mostly underlain by silt and clay.    SECTION D. MONITORING WELL ABANDONMENT/INSTALLATION – FEBRUARY  2024    On February 15 and 16, 2024, WR personnel along with AmeriProbe, LLC (AmeriProbe) mobilized  to the site to install replacement monitoring well MW‐1R as well as MW‐2 and MW‐3 via hollow  stem auger. Each of the 2‐inch diameter monitoring wells were installed to a depth of 50 feet with  20 feet of screen.   Each well was completed with a concrete collar/pad and 8‐inch diameter flush‐mount manway.  Schedule 40 PVC 10‐slot well screen was used for the intervals indicated above and Schedule 40  PVC casing was placed from the ground surface to the depth indicated for the screened  portion.  The boring logs and monitoring well construction records are included in Appendix  B.  The monitoring well locations are shown on Figure 2.  Construction information for the  monitoring wells is included in Table B‐7. Following completion, the wells were developed with a  downhole well pump.  Monitoring well MW‐1 had a bent casing and was abandoned during the monitoring well  installation activities and replaced with MW‐1R. MW‐1 was abandoned through the emplacement  of grout using a tremie pipe until the well was filled to the surface. The flush mounted concrete  well cover was filled with concrete. The well abandonment record (NCDEQ GW‐30) is included as  Attachment B.      SECTION E. AFVR EVENT – FEBRUARY 2024    On February 27, 2024, WR personnel along with Eastern Environmental Management (EEM)  mobilized to the site and proceeded with an AFVR event. Prior to performing the AFVR event, WR  personnel gauged the depth to water in well MW‐1R. LNAPL was not detected in MW‐1R and the  depth to water was 40.68 feet below the top‐of‐casing (BTOC). Depth to water was also measured  in monitoring wells MW‐2 and MW‐3 prior to the AFVR event and was 40.68 and 41.15 feet  BTOC, respectively.  The AFVR event included application of vacuum for eight hours to monitoring well MW‐1R.  Vacuum at the well head averaged 20 inches of mercury.   Air stream concentrations from the  discharge of the blower were measured using a field calibrated RAE Systems™ Mini RAE® 3000  PID. Measured concentrations ranged from 62.4 parts per million (ppm) to 292.1 ppm during the  event.  At the conclusion of the AFVR, approximately 572 gallons of impacted groundwater was  recovered. Emissions through volatilization of recovered product were calculated to be  approximately 3.56 pounds (0.57 gallons).   At the conclusion of the event, depth to water in MW‐1R was 45.10 feet BTOC, the depth to  water in MW‐2 was 40.84 feet BTOC, and the depth to water in MW‐3 remained unchanged.  WithersRavenel Our People. Your Success.  J&J Mart – NCDEQ Incident #29956 WR Project # 23‐03017‐CR  Monitoring Report May 2024  9    LNAPL was not identified in MW‐1R at the conclusion of the AFVR event. The disposal manifest  and AFVR calculations are included in Appendix C and field notes are provided in Appendix A.    SECTION F. GROUNDWATER SAMPLING – MARCH 2024    On March 13, 2024, WR personnel mobilized to the subject property to gauge, purge, and sample  monitoring wells MW‐1R, MW‐2, and MW‐3. The following paragraphs describe the sampling  activities and associated laboratory analytical results.     Groundwater Sampling Activities  Prior to the purging and sampling of the site monitoring well as described below, WR personnel  gauged each of the monitoring wells with an electronic oil‐water interface meter to determine the  depth to LNAPL and groundwater.  During the performance of these activities, LNAPL was not  identified.      The depth to groundwater measurements ranged from 40.27 feet BTOC in MW‐2 to 40.70 feet  BTOC in monitoring well MW‐3. A groundwater elevation contour map is included as Figure 4.  Groundwater flow direction across the site has been determined to be to the north. Groundwater  elevation measurements for this event are presented in Table B‐7.   Field notes are included in  Appendix A.  Following gauging, monitoring wells MW‐1R, MW‐2, and MW‐3 were purged and sampled with  disposable polyethylene (PE) bailers.  The samples were decanted into pre‐preserved laboratory  provided sample containers and submitted to Waypoint Analytical, LLC for testing by Standard  Method (SM) 6200B.    Laboratory Results  Laboratory analytical results from the March 13, 2024, sampling event revealed the following:     Monitoring well MW‐1R contained the following compounds above the Gross  Contamination Levels (GCLs): benzene at 34,900 g/L, EDB at 256 g/L, and 1,2‐DCA at  419 g/L.    Monitoring well MW‐1R also contained the following compounds above the 2L Standards:  ethylbenzene at 4,310 g/L, isopropyl ether at 7,790 g/L, isopropylbenzene at 185 g/L,  MTBE at 9,900 g/L, MBK at 206 g/L, MIBK at 110 g/L, naphthalene at 665 g/L, n‐ propylbenzene at 436 g/L, toluene at 60,600 g/L, 1,2,4‐trimethylbenzene at 2,890 g/L,  1,3,5‐trimethylbenzene at 720 g/L, and total xylenes at 21,600 g/L.   Monitoring well MW‐2 contained the following compounds above the 2L Standards:  benzene at 475 g/L, ethylbenzene at 5,460 g/L, isopropylbenzene at 228 g/L,  naphthalene at 775 g/L, n‐propylbenzene at 530 g/L, toluene at 29,300 g/L, 1,2,4‐ trimethylbenzene at 3,520 g/L, 1,3,5‐trimethylbenzene at 849 g/L, and total xylenes at  26,800 g/L.   Monitoring well MW‐3 contained the following compounds above the 2L Standards:  benzene at 18.9 g/L, naphthalene at 6.77 g/L, and toluene at 32,600 g/L.    WithersRavenel Our People. Your Success.  J&J Mart – NCDEQ Incident #29956 WR Project # 23‐03017‐CR  Monitoring Report May 2024  10    Groundwater analytical results are summarized in Table B‐4 and shown on Figure 5.  A benzene  isoconcentration contour map is included as Figure 6.  Copies of the laboratory analytical report and chain‐of‐custody are included in Appendix D.  WR’s  generalized standard operating procedures are provided in Appendix E.     SECTION F. CONCLUSIONS AND RECOMMENDATIONS    This report documents the results of field activities conducted at the site for TA‐03, which included  the installation of replacement monitoring well MW‐1R and two new monitoring wells (MW‐2 and  MW‐3, the performance of an AFVR event, and a groundwater sampling event. Conclusions based  on observations, analytical data and research relating to the release at the site combined with  historical information include the following:     The portion of the site building formerly occupied by the convenient store is currently  vacant. The rear of the site is used for pallet breakdown and storage.                         Ten water supply wells were identified within 1,000 feet of the site (WSW‐1 through  WSW‐6, WSW‐6A, and WSW‐7 through WSW‐9).  Municipal water is available at the site  and surrounding area.    Replacement monitoring well MW‐1R and new monitoring wells MW‐2 and MW‐3 were  installed.   An AFVR was performed on MW‐1R and recovered 572 gallons of impacted groundwater  and emissions through volatilization of recovered product were calculated to be  approximately 3.56 pounds (0.57 gallons).    Monitoring wells MW‐1R, MW‐2, and MW‐3 were located, gauged, purged and sampled.   Groundwater flow direction across the site was determined to be to the north.   LNAPL was not identified at the site during the March 2024 sampling event but was  detected in September 2015.   Benzene, EDB, and 1,2‐DCA concentrations in groundwater from MW‐1R exceeded the  GCLs.    Numerous targeted compounds exceeded the 2L Standards in MW‐1R, MW‐2, and MW‐ 3.   The AFVR event did not appear to be effective at reducing concentrations.     Based on the results of assessment and monitoring activities conducted at the site in association  with this TA, WR recommends the following:   Consider performing an injection to reduce contaminant concentrations.   Conduct periodic groundwater monitoring.  WithersRavenel Our People. Your Success.           FIGURES      CBM LA DRAWN BY: 03/29/2024 23-0307-CR 1 SUBJECT SITE ±1.65 ACRES SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: J&J MART - NCDEQ INC. 29956 905 S. MAIN STREETSTAR, MONTGOMERY COUNTY, NC GENERAL LOCATION MAP J:\23\0307-CR-JJ Mart\Enviro\CAD\TF29956 Base 03-2024.dwg- March 29, 2024 - ALLYN, LIZ 1"=500 'WithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.com 500250 10000 GRAPHIC SCALE 1 inch = 500 feet S M A I N S T FORMER 1,000 GALLON USTs FORMER 10,000GALLON USTs FORMER AST W W W W W W W W W W W W W W W W MW-1 (ABANDONED) ABANDONED 10,000GALLON UST MW-1R MW-2MW-3 J:\23\0307-CR-JJ Mart\Enviro\CAD\TF29956 Base 03-2024.dwg- March 29, 2024 - ALLYN, LIZ LEGEND TYPE II MONITORING WELL LOCATION NOTES: 1.) 2019 AERIAL OBTAINED FROM NC ONE MAP.1 inch = 40 ft. 4020 80 GRAPHIC SCALE 0 MM LA DRAWN BY: 1"=40 ' 03/29/24 23-0307-CR 2 SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: J&J MART - NCDEQ INC. 29956 905 S. MAIN STREETSTAR, MONTGOMERY COUNTY, NC SITE MAP WithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.com S M A I N S T 1000'RADIUS 500'RADIUS WWSW-7 W WSW-6 W WSW-6A WWSW-5 WWSW-4 WWSW-9WWSW-8 WWSW-2 W WSW-1WWSW-3 W W W W W W W W W W W W W W W J:\23\0307-CR-JJ Mart\Enviro\CAD\TF29956 Base 03-2024.dwg- April 4, 2024 - ALLYN, LIZ LEGEND ACTIVE WATER SUPPLY WELL LOCATION INACTIVE WATER SUPPLY WELL LOCATION UNKNOWN USE WATER SUPPLY WELL LOCATION MUNICIPAL WATER LINE LOCATION NOTES: 1.) 2019 AERIAL OBTAINED FROM NC ONE MAP.1 inch = 300 ft. 300150 600 GRAPHIC SCALE 0 MM LA DRAWN BY: 1"=300 ' 01/05/24 23-0307-CR 3 SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: J&J MART - NCDEQ INC. 29956 905 S. MAIN STREETSTAR, MONTGOMERY COUNTY, NC POTENTIAL RECEPTOR MAP WithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.com W W W W S M A I N S T FORMER 1,000GALLON USTs FORMER 10,000GALLON USTs FORMER AST W W W W W W W W W W W MW-1 (ABANDONED) ABANDONED 10,000GALLON UST MW-1R MW-2MW-3(58.94)(59.37) (59.68) 59.00 59.25 59.50 J:\23\0307-CR-JJ Mart\Enviro\CAD\TF29956 Base 03-2024.dwg- April 1, 2024 - ALLYN, LIZ LEGEND TYPE II MONITORING WELL LOCATION GROUNDWATER ELEVATION (FEET) GROUNDWATER ELEVATION CONTOUR (FEET) ASSUMED GROUNDWATER FLOW DIRECTION NOTES: 1.) 2019 AERIAL OBTAINED FROM NC ONE MAP.1 inch = 40 ft. 4020 80 GRAPHIC SCALE 0 CBM LA DRAWN BY: 1"=40 ' 03/27/2024 23-0307-CR 4 SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: J&J MART - NCDEQ INC. 29956 905 S. MAIN STREETSTAR, MONTGOMERY COUNTY, NCGROUNDWATER ELEVATIONCONTOUR MAP - MARCH 2024 WithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.com (58.94) S M A I N S T FORMER 1,000GALLON USTs FORMER 10,000GALLON USTs FORMER AST W W W W W W W W W W W MW-1 (ABANDONED) ABANDONED 10,000GALLON UST MW-1R MW-2MW-3 J:\23\0307-CR-JJ Mart\Enviro\CAD\TF29956 Base 03-2024.dwg- March 29, 2024 - ALLYN, LIZ LEGEND TYPE II MONITORING WELL LOCATION NOTES: 1.) 2019 AERIAL OBTAINED FROM NC ONE MAP.1 inch = 40 ft. 4020 80 GRAPHIC SCALE 0 CBM LA DRAWN BY: 1"=40 ' 03/29/2024 23-0307-CR 5 SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: J&J MART - NCDEQ INC. 29956 905 S. MAIN STREETSTAR, MONTGOMERY COUNTY, NCGROUNDWATER ANALYTICALRESULTS MAP - MARCH 2024 WithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.com S M A I N S T FORMER 1,000GALLON USTs FORMER 10,000GALLON USTs FORMER AST W W W W W W W W W W W MW-1 (ABANDONED) ABANDONED 10,000GALLON UST MW-1R MW-2MW-3 (34,900) (18.9)(475) 5,000 ug/L 1 ug/L J:\23\0307-CR-JJ Mart\Enviro\CAD\TF29956 Base 03-2024.dwg- April 4, 2024 - ALLYN, LIZ LEGEND TYPE II MONITORING WELL LOCATION BENZENE CONCENTRATION (ug/L) BENZENE ISOCONCENTRATION CONTOUR (ug/L) NOTES: 1.) 2019 AERIAL OBTAINED FROM NC ONE MAP.1 inch = 40 ft. 4020 80 GRAPHIC SCALE 0 CBM LA DRAWN BY: 1"=40 ' 03/27/2024 23-0307-CR 6 SCALE:FIGURE NO.: PROJECT NO.:DATE:APPROVED BY: J&J MART - NCDEQ INC. 29956 905 S. MAIN STREETSTAR, MONTGOMERY COUNTY, NCBENZENE ISOCONCENTRATION MAP- MARCH 2024 WithersRavenel Engineers | Planners | Surveyors 115 MacKenan Drive | Cary, NC 27511 | t: 919.469.3340 | license #: F-1479www.withersravenel.com (34,900) WithersRavenel Our People. Your Success.      TABLES        UST ID Number Capacity (in gallons) Construction Details Tank Dimensions (diameter x length) Description of Associated Piping & Pumps Date of Tank Installation Status of UST Was release associated with UST System? (Y/N) 1 1,000 Single-walled Steel 48" x 126"Steel 3/23/1963 Permanently Closed By Removal (5/17/1994) Y 2 1,000 Single-walled Steel 48" x 126"Steel 3/23/1963 Permanently Closed By Removal (5/17/1994) Y 3 10,000 Single-walled Steel 10'6" x 15'8"Steel 3/19/1976 Permanently Closed By Removal (9/13/1995) N 4 10,000 Single-walled Steel 10'6" x 15'8"Steel 3/19/1976 Permanently Closed By Removal (9/13/1995) N A1 4,000 FRP Composite Steel Fiberglass 12/20/1995 Abandoned In Place (11/27/2023) A1B 4,000 FRP Composite Steel Fiberglass 12/20/1995 Abandoned In Place (11/27/2023) A1C 2,000 FRP Composite Steel Fiberglass 12/20/1995 Abandoned In Place (11/27/2023) AST ID Number Capacity (in gallons) Construction Details Tank Dimensions (diameter x length) (ft) Description of Associated Piping & Pumps Date of Tank Installation Status of AST Was release associated with AST System? (Y/N) 1 Unknown Steel Approx 3' x 5' Unknown Unknown Removed between 2016 and 2021 Unknown Incident Number Material Released Date of Release 14008/ 29956 Petroleum May 1994 Notes: 1) UST Information obtained from the UST database and historical files. Diesel Diesel Diesel Gasoline Gasoline Gasoline Gasoline 8' x 27' TABLE B‐1Site History:  UST/AST System & Other Release Informatio J&J Mar 14008 - Release discovered during the removal of two 1,000-gallon USTs in June 1994. Monitoring wells installed as part of a real estate transaction contained exceedences of GCLs and 2L Standards. 29956 - LNAPL identified in on-site monitoring well during potential UST removal contractor's site visit in September 2015. 905 S. Main StreetStar, Montgomery County, North Carolina Description of Release Incident # 29956 Current/Last Contents Current/Last Contents Unknown Y Ac e t o n e   Be n z e n e   Bu t y l b e n z e n e ,  n‐  Bu t y l b e n z e n e ,  se c ‐  Bu t y l b e n z e n e ,  te r t ‐  Di b r o m o e t h a n e ,  1,2 ‐  Di c h l o r o e t h a n e ,  1, 2 ‐  Et h y l b e n z e n e   Is o p r o p y l  Et h e r   Is o p r o p y l b e n z e n e  (C u m e n e )   Is o p r o p y l t o l u e n e ,  4‐  MB K ,  Me t h y l  Bu t y l  Ke t o n e   (2 ‐He x a n o n e )    ME K  (2 ‐Bu t a n o n e  ) Me t h y l e n e  Ch l o r i d e   Me t h y l ‐te r t ‐Bu t y l  Et h e r   MI B K  (4 ‐Me t h y l ‐2‐ pe n t a n o n e )   Na p h t h a l e n e   Pr o p y l b e n z e n e ,  n‐ To l u e n e   Tr i m e t h y l b e n z e n e ,  1, 2 , 4 ‐  Tr i m e t h y l b e n z e n e ,  1, 3 , 5 ‐ Xy l e n e s ,  m,p ‐  Xy l e n e ,  o‐ Xy l e n es,  to t a l   67‐64‐1 71‐43‐2 104‐51‐8 135‐98‐8 98‐06‐6 106‐93‐4 107‐06‐2 100‐41‐4 108‐20‐3 98‐82‐8 99‐87‐6 591‐78‐6 78‐93‐3 75‐09‐2 1634‐04‐4 108‐10‐1 91‐20‐3 103‐65‐1 108‐88‐3 95‐63‐6 108‐67‐8 108‐38‐3/ 106‐42‐3 95‐47‐6 1330‐20‐7 1/4/2000 1,300 1,000 200 50 570 130 610 3,300 NR 200 27 <400 <400 140 330,000 <400 1700 630 51,000 2,700 1,100 10,000 4,900 14,900 6/23/2021 1,540 33,100 <50.0 <50.0 <200 485 386 5,550 4,640 258 <50.0 606 1,130 <200 2,950 195 891 643 73,900 4,380 1,110 16,200 9,230 25,400 8/25/2023 3,120 44,500 <50.0 <50.0 <200 271 322 4,240 6,290 183 <50.0 355 1,230 <200 3,090 <100 888 421 83,500 3,020 731 15,600 7,850 23,500 11/27/20232/15/2024 MW‐1R 3/13/2024 2,350 34,900 <50.0 <50.0 <200 256 419 4,310 7,790 185 <50.0 206 1,060 <200 9,900 110 665 436 60,600 2,890 720 14,300 7,320 21,600 MW‐2 3/13/2024 <1000 475 <50.0 <50.0 <200 <50.0 <50.0 5,460 <50.0 228 <50.0 <100 <500 <200 <100 <100 775 530 29,300 3,520 849 17,500 9,340 26,800 MW‐3 3/13/2024 <10.0 18.9 <0.500 <0.500 <2.00 <0.500 <0.500 53.7 1.02 1.93 <0.500 9.68 9.1 <2.00 <1.00 4.03 6.77 4.51 32,600 31.6 7.38 179 90.7 270 6000 1 70 70 70 0.02 0.4 600 70 70 25 40 4000 400 20 100 6 70 600 400 400 500 500 500 6,000,000 5,000 5,900 8,800 14,750 50 400 80,000 70,000 30,500 11,700 40,000 4,000,000 400,000 20,000 100,000 6,000 26,100 260,000 28,500 24,100 50,000 50,000 50,000 Notes:1) 2) 3) 4) ResultResultResult Star, Montgomery County, North Carolina TABLE B‐4SUMMARY OF GROUNDWATER ANALYTICAL RESULTS J&J MartIncident # 29956905 S. Main Stree GCLs for Groundwater = NCDEQ UST Section Gross Contamination Levels for Groundwater. Analytical Method SM6200B Sample ID Date Collected NC 2L Standard GCLs for Groundwater All results provided in ug/L (micrograms per liter) or parts per billion. Compounds analyzed for by laboratory but not listed were not detected above laboratory detection limits. See the laboratory report included in the Appendix for a full list of constituents.  NC 2L Standard ‐ North Carolina Groundwater Quality Standard as per NC Administrative Code 15A NCAC 02L. LNAPL at a thickness of 0.28 feet MW‐1 Abandoned ‐ well had bent casing = Result Exceeds NCDEQ Gross Contaminant Level for Groundwate = Result Exceeds Laboratory Detection Limits = Result Exceeds NC 2L Standard for Groundwate Notes: 1)2)3)Distances measured from monitoring well MW‐1 TABLE B‐5A PUBLIC & PRIVATE WATER SUPPLY WELL INFORMATION J&J MartIncident # 29956905 S. Main StreetStar, Montgomery County, North Carolina House is vacant ‐‐‐ Connected to Municipal Water Comments Connected to Municipal Water Connected to  Municipal Water Connected to Municipal Water Tax card lists as storage building ‐‐‐ Inactive Potable ‐ Building is currently vacant and in poor  condition Inactive Potable ‐ Lot is currently vacant Not Determined Unknown Unknown 900 West Inactive ‐ Dry (Connected to Municipal Water) Inactive ‐ Dry Property owner information was obtained from Montgomery County, NC Geographic Information System on 7/19/2021. Well ID Property Address County Property Owner WSW‐2 WSW‐1 Well location address information was obtained from historical reporting for the incident. Well Use Well Depth (feet) Well Screen Interval (feet) Well Distance from Source Area (feet) Location Relative to Groundwater Flow Unknown 200 North Property Owner Address Montgomery 901 S. Main StreetStar, NC(PIN 7569 00 74 7923) 901 S. Main StreetStar, NC 27356 Not Determined P.O. Box 202Star, NC 27356 Unknown Unknown 450 Northwest Montgomery Rental Income LLC P.O. Box 890 Biscoe, NC 27209 Inactive Potable (Connected to  Municipal Water) Not Determined Unknown Unknown 1,075 Northwest Not DeterminedUnaddressed Parcel ‐ S. Main StreetStar, NC (PIN 7569 00 75 0434) Montgomery Not DeterminedInactive Potable (Connected to Municipal Water) Unknown 933 S. Main StreetStar, NC (PIN 7569 00 84 2438) Montgomery Montgomery Victor Estrada 329 Dark Springs Mtn TrailTroy, NC 27371 Unknown Unknown Unknown 220 West Not DeterminedUnknown Unknown Not Determined Unknown Unknown 400 Southeast Unknown Unknown UnknownInactive Potable (Connected to Municipal Water) 912 S. Main Street Star, NC(PIN 7569 00 74 5659) 1,050 Southwest WSW‐6 Unaddressed Parcel ‐ S. Main StreetStar, NC (PIN 7569 00 84 1567) P.O. Box 458Candor, NC 27229 Lois J. Allen 140 Allen DriveStar, NC 27356 202 Alma DriveStar, NC (PIN 7569 00 63 7958) Montgomery Mary Cockman Heirs WSW‐6A Armando ChableWSW‐8 WSW‐3 898 S. Main StreetStar, NC(PIN 7569 00 74 4846)Montgomery Johnny C. and Jane R. Hancock 202 Alma DriveStar, NC 27356 WSW‐4 115 Alma Drive Star, NC(PIN 7569 00 3993)Montgomery Susan H. Allen Tax card lists property as vacant 950 West Not Determined ‐‐‐ WSW‐9 Armando Chable P.O. Box 458Candor, NC 27229 WSW‐5 850 South‐southwest Not Determined Active Potable (replacement  well for WSW‐6)205 64‐205 465 Southeast Unknown Not Determined Unknown 140 Allen Drive Star, NC(PIN 7569 00 74 0865)Montgomery Lois J. Allen 140 Allen DriveStar, NC 27356 WSW‐7 Page 1 of 1 Well ID Date of Installation Screened  Interval  (feet) Total Depth  (feet below ground surface) Well Diameter (inches)Top‐of‐Casing Elevation (feet)Date Water Level Measured Depth‐to‐LNAPL(feet) Depth‐to‐Water Uncorrected(feet) LNAPL Thickness(feet) Groundwater  SurfaceElevation          (feet) 1/4/2000 NM Unknown NM Unknown 9/29/2015 7/28/2016 NM 38.48 NM NM 6/23/2021 NM 31.90 NM NM 8/25/2023 NM 38.94 NM NM 11/27/2023 42.80 43.08 0.28 NM 2/15/2024 MW‐1R 2/15/2024 30‐50 50 2 100.00 3/13/2024 NM 40.32 NM 59.68 MW‐2 2/15/2024 30‐50 50 2 99.64 3/13/2024 NM 40.27 NM 59.37 MW‐3 2/15/2024 30‐50 50 2 99.64 3/13/2024 NM 40.70 NM 58.94 1)2) 3)NM = Not Measured. Consultant on‐site for UST removal bid noted 4" of LNAPL in well Unknown 50 2 NM Abandoned ‐ Well had bent casing TABLE B‐7MONITORING WELL CONSTRUCTION INFORMATION AND LIQUID LEVEL DATA J&J MartIncident # 29956905 S. Main StreetStar, Montgomery County, North Carolina Notes: LNAPL ‐ Light Non‐Aqueous Phase Liquid. Groundwater elevation adjusted for LNAPL is [Top of Casing Elevation ‐ Depth to Water] + [LNAPL Thickness * 0.8581] MW‐1 Unknown Page 1 of 1 WithersRavenel Our People. Your Success.      APPENDIX A   FIELD NOTES & PHOTOGRAPHIC RECORD WithersRavenel Our People. Your Success.       PHOTO 1 General site photograph facing northeast     PHOTO 2 Location of monitoring well MW‐1R  WithersRavenel Our People. Your Success.       PHOTO 3 Location of monitoring well MW‐2     PHOTO 4 Location of monitoring well MW‐3  WithersRavenel Our People. Your Success.       APPENDIX B    BORING LOGS & WELL CONSTRUCTION RECORDS      Job Name: Site Loc.: Driller: PID (ppm) Notes: 4,681 0.0 2,600 2,570 1,912 4,128 4,325 30-50 ft 2" Dia. 0.010-Slot PVC Well Screen 0-30 ft 2" Dia. PVC Casing Red SILTY CLAY 10-50 ft 46 47 48 Red, Brown SILTY CLAY 0-10 ft 28-50 ft Clean-Washed Torpedo SAND 24-28 ft Bentonite 0-24 ft Portland Cement/Bentonite Slurry 0.0 0.0 40 41 42 43 44 45 Page 1 of 1 115 MacKenan Drive Cary, North Carolina 27511 tel:919.469.3340 fax:919.467.6008 www.withersravenel.com 29 30 31 32 33 34 35 36 1.) Boring Terminated at 50' BLS2.) BLS - Below Land Surface = Groundwater Level (Measured at 40.68 feet Beneath TOC)3.) TOC - Top of Casing 27 28 49 50 37 38 39 22 23 24 25 26 17 18 19 20 21 15 16 11 12 13 14 0.0 8 9 10 MW - 1 R 2 3 4 5 1 6 7 Depth in Feet Soil Description (Field USCS Classification) Well Construction 0 Ground Surface Date:February 15, 2024 Star, Montgomery County, NC TOC EL:100.00 WR Rep:S. Powell AmeriProbe GW EL:59.32 WELL CONSTRUCTION LOG Well ID:MW-1R J&J Mart Job #:23-0307-CR WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 2-22-2016 1. Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2. Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3. Well Use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation Non-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop) □Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6. Is(are) the well(s): □Permanent or □Temporary 7. Is this a repair to an existing well: □Yes or □No If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wells drilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′) 10. Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method: (i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 14. WATER ZONES FROM TO DESCRIPTION ft. ft. ft. ft. 15. OUTER CASING (for multi-cased wells) OR LINER (if applicable) FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in. 16. INNER CASING OR TUBING (geothermal closed-loop) FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in. ft. ft. in. 17. SCREEN FROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL ft. ft. in. ft. ft. in. 18. GROUT FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT ft. ft. ft. ft. ft. ft. 19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD ft. ft. ft. ft. 20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.) ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. 21. REMARKS 22. Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 23. Site diagram or additional well details: You may use the back of this page to provide additional well site details or well construction details. You may also attach additional pages if necessary. SUBMITTAL INSTRUCTIONS 24a. For All Wells: Submit this form within 30 days of completion of well construction to the following: Division of Water Resources, Information Processing Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617 24b. For Injection Wells: In addition to sending the form to the address in 24a above, also submit one copy of this form within 30 days of completion of well construction to the following: Division of Water Resources, Underground Injection Control Program, 1636 Mail Service Center, Raleigh, NC 27699-1636 24c. For Water Supply & Injection Wells: In addition to sending the form to the address(es) above, also submit one copy of this form within 30 days of completion of well construction to the county health department of the county where constructed. John Allen 4196 -B AmeriProbe NCDEQ INC. 29956 2/16/24 MW-1R J & J Mart 905 S Main St., Star, NC 27356 Montgomery 35.3816963 79.7789266 50 42 8 1/4'' Auger 3/6/24 42 50 0 30 2''SCH40 PVC 30 50 2''0.010 SCH40 PVC 0 24 28 24 28 50 Neat Cement Bentonite #2 Sand Poured Through Augers Poured Through Augers See Consultant's Logs 2' X 2' Concrete Flushmount Pad Print Form Poured Through Augers Job Name: Site Loc.: Driller: PID (ppm) Notes: 0.0 0.0 0.0 0.0 0.0 0.0 Red SILTY CLAY 0-30 ft Red/Tan SILTY CLAY 30-35 ft Red/Tan SILTY CLAY 35-50 ft 760.7 816.6 722.8 1567 Page 1 of 1 115 MacKenan Drive Cary, North Carolina 27511 tel:919.469.3340 fax:919.467.6008 www.withersravenel.com 1.) Boring Terminated at 50' BLS2.) BLS - Below Land Surface = Groundwater Level (Measured at 40.68 feet Beneath TOC)3.) TOC - Top of Casing 45 46 47 48 49 50 39 40 41 42 43 44 30 30-50 ft 2" Dia. 0.010-Slot PVC Well Screen 31 32 33 34 35 36 37 38 24-28 ft Bentonite25 26 27 28 28-50 ft Clean-Washed Torpedo SAND 29 21 22 23 24 16 17 18 19 20 12 13 14 15 8 9 10 11 MW - 2 0-30 ft 2" Dia. PVC Casing 2 3 4 5 1 0-24 ft Portland Cement/Bentonite Slurry 6 7 Depth in Feet Soil Description (Field USCS Classification) Well Construction 0 Ground Surface Date:February 15, 2024 Star, Montgomery County, NC TOC EL:100.00 WR Rep:S. Powell AmeriProbe GW EL:58.96 WELL CONSTRUCTION LOG Well ID:MW-2 J&J Mart Job #:23-0307-CR WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 2-22-2016 1. Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2. Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3. Well Use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation Non-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop) □Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6. Is(are) the well(s): □Permanent or □Temporary 7. Is this a repair to an existing well: □Yes or □No If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wells drilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′) 10. Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method: (i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 14. WATER ZONES FROM TO DESCRIPTION ft. ft. ft. ft. 15. OUTER CASING (for multi-cased wells) OR LINER (if applicable) FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in. 16. INNER CASING OR TUBING (geothermal closed-loop) FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in. ft. ft. in. 17. SCREEN FROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL ft. ft. in. ft. ft. in. 18. GROUT FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT ft. ft. ft. ft. ft. ft. 19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD ft. ft. ft. ft. 20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.) ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. 21. REMARKS 22. Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 23. Site diagram or additional well details: You may use the back of this page to provide additional well site details or well construction details. You may also attach additional pages if necessary. SUBMITTAL INSTRUCTIONS 24a. For All Wells: Submit this form within 30 days of completion of well construction to the following: Division of Water Resources, Information Processing Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617 24b. For Injection Wells: In addition to sending the form to the address in 24a above, also submit one copy of this form within 30 days of completion of well construction to the following: Division of Water Resources, Underground Injection Control Program, 1636 Mail Service Center, Raleigh, NC 27699-1636 24c. For Water Supply & Injection Wells: In addition to sending the form to the address(es) above, also submit one copy of this form within 30 days of completion of well construction to the county health department of the county where constructed. John Allen 4196 -B AmeriProbe NCDEQ INC. 29956 2/16/24 MW-2 J & J Mart 905 S Main St., Star, NC 27356 Montgomery 35.3817345 79.7787971 50 41 8 1/4'' Auger 3/6/24 41 50 0 30 2''SCH40 PVC 30 50 2''0.010 SCH40 PVC 0 24 28 24 28 50 Neat Cement Bentonite #2 Sand Poured Through Augers Poured Through Augers See Consultant's Logs 2' X 2' Concrete Flushmount Pad Print Form Poured Through Augers Job Name: Site Loc.: Driller: PID (ppm) Notes: Page 1 of 1 115 MacKenan Drive Cary, North Carolina 27511 tel:919.469.3340 fax:919.467.6008 www.withersravenel.com Red, Brown SILTY CLAY 0-5 ft Red SILTY CLAY 5-50 ft 1.) Boring Terminated at 50' BLS2.) BLS - Below Land Surface = Groundwater Level (Measured at 41.15 feet Beneath TOC)3.) TOC - Top of Casing 43 44 45 46 120.6 47 48 49 50 0.0 37 38 39 40 41 0.0 42 30-50 ft 2" Dia. 0.010-Slot PVC Well Screen 31 0.0 32 33 34 35 36 24-28 ft Bentonite25 26 0.0 27 28 28-50 ft Clean-Washed Torpedo SAND 29 30 21 0.0 22 23 24 16 0.0 17 18 19 20 10 11 0.0 12 13 14 15 MW - 3 0-30 ft 2" Dia. PVC Casing 2 3 4 5 6 0.0 1 0.0 0-24 ft Portland Cement/Bentonite Slurry 7 8 9 Depth in Feet Soil Description (Field USCS Classification) Well Construction 0 Ground Surface Date:February 15, 2024 Star, Montgomery County, NC TOC EL:100.00 WR Rep:S. Powell AmeriProbe GW EL:58.49 WELL CONSTRUCTION LOG Well ID:MW-3 J&J Mart Job #:23-0307-CR WELL CONSTRUCTION RECORD (GW-1) For Internal Use Only: Form GW-1 North Carolina Department of Environmental Quality - Division of Water Resources Revised 2-22-2016 1. Well Contractor Information: Well Contractor Name NC Well Contractor Certification Number Company Name 2. Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) 3. Well Use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply) □Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation Non-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation □Aquifer Storage and Recovery □Salinity Barrier □Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop) □Tracer □Geothermal (Heating/Cooling Return) □Other (explain under #21 Remarks) 4. Date Well(s) Completed: Well ID# 5a. Well Location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W 6. Is(are) the well(s): □Permanent or □Temporary 7. Is this a repair to an existing well: □Yes or □No If this is a repair, fill out known well construction information and explain the nature of the repair under #21 remarks section or on the back of this form. 8. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same construction, only 1 GW-1 is needed. Indicate TOTAL NUMBER of wells drilled: 9. Total well depth below land surface: (ft.) For multiple wells list all depths if different (example- 3@200’ and 2@100′) 10. Static water level below top of casing: (ft.) If water level is above casing, use “+” 11. Borehole diameter: (in.) 12. Well construction method: (i.e. auger, rotary, cable, direct push, etc.) FOR WATER SUPPLY WELLS ONLY: 13a. Yield (gpm) Method of test: 13b. Disinfection type: Amount: 14. WATER ZONES FROM TO DESCRIPTION ft. ft. ft. ft. 15. OUTER CASING (for multi-cased wells) OR LINER (if applicable) FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in. 16. INNER CASING OR TUBING (geothermal closed-loop) FROM TO DIAMETER THICKNESS MATERIAL ft. ft. in. ft. ft. in. 17. SCREEN FROM TO DIAMETER SLOT SIZE THICKNESS MATERIAL ft. ft. in. ft. ft. in. 18. GROUT FROM TO MATERIAL EMPLACEMENT METHOD & AMOUNT ft. ft. ft. ft. ft. ft. 19. SAND/GRAVEL PACK (if applicable) FROM TO MATERIAL EMPLACEMENT METHOD ft. ft. ft. ft. 20. DRILLING LOG (attach additional sheets if necessary) FROM TO DESCRIPTION (color, hardness, soil/rock type, grain size, etc.) ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. ft. 21. REMARKS 22. Certification: Signature of Certified Well Contractor Date By signing this form, I hereby certify that the well(s) was (were) constructed in accordance with 15A NCAC 02C .0100 or 15A NCAC 02C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 23. Site diagram or additional well details: You may use the back of this page to provide additional well site details or well construction details. You may also attach additional pages if necessary. SUBMITTAL INSTRUCTIONS 24a. For All Wells: Submit this form within 30 days of completion of well construction to the following: Division of Water Resources, Information Processing Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617 24b. For Injection Wells: In addition to sending the form to the address in 24a above, also submit one copy of this form within 30 days of completion of well construction to the following: Division of Water Resources, Underground Injection Control Program, 1636 Mail Service Center, Raleigh, NC 27699-1636 24c. For Water Supply & Injection Wells: In addition to sending the form to the address(es) above, also submit one copy of this form within 30 days of completion of well construction to the county health department of the county where constructed. John Allen 4196 -B AmeriProbe NCDEQ INC. 29956 2/16/24 MW-3 J & J Mart 905 S Main St., Star, NC 27356 Montgomery 35.3817640 79.7790178 50 42 8 1/4'' Auger 3/6/24 42 50 0 30 2''SCH40 PVC 30 50 2''0.010 SCH40 PVC 0 24 28 24 28 50 Neat Cement Bentonite #2 Sand Poured Through Augers Poured Through Augers See Consultant's Logs 2' X 2' Concrete Flushmount Pad Print Form Poured Through Augers WELL ABANDONMENT RECORD Form GW-30 North Carolina Department of Environmental Quality - Division of Water Resources Revised 2-22-2016 1.Well Contractor Information: Well Contractor Name (or well owner personally abandoning well on his/her property) NC Well Contractor Certification Number Company Name 2.Well Construction Permit #: List all applicable well construction permits (i.e. UIC, County, State, Variance, etc.) if known 3.Well use (check well use): Water Supply Well: □Agricultural □Municipal/Public □Geothermal (Heating/Cooling Supply)□Residential Water Supply (single) □Industrial/Commercial □Residential Water Supply (shared) □Irrigation Non-Water Supply Well: □Monitoring □Recovery Injection Well: □Aquifer Recharge □Groundwater Remediation□Aquifer Storage and Recovery □Salinity Barrier□Aquifer Test □Stormwater Drainage □Experimental Technology □Subsidence Control □Geothermal (Closed Loop)□Tracer□Geothermal (Heating/Cooling Return) □Other (explain under 7g) 4. Date well(s) abandoned: 5a. Well location: Facility/Owner Name Facility ID# (if applicable) Physical Address, City, and Zip County Parcel Identification No. (PIN) 5b. Latitude and longitude in degrees/minutes/seconds or decimal degrees: (if well field, one lat/long is sufficient) N W CONSTRUCTION DETAILS OF WELL(S) BEING ABANDONED Attach well construction record(s) if available. For multiple injection or non-water supply wells ONLY with the same construction/abandonment, you can submit one form. 6a. Well ID#: 6b. Total well depth: (ft.) 6c. Borehole diameter: (in.) 6d. Water level below ground surface: (ft.) 6e. Outer casing length (if known): (ft.) 6f. Inner casing/tubing length (if known): (ft.) 6g. Screen length (if known): (ft.) WELL ABANDONMENT DETAILS 7a. For Geoprobe/DPT or Closed-Loop Geothermal Wells having the same well construction/depth, only 1 GW-30 is needed. Indicate TOTAL NUMBER of wells abandoned: 7b. Approximate volume of water remaining in well(s): (gal.) FOR WATER SUPPLY WELLS ONLY: 7c. Type of disinfectant used: 7d. Amount of disinfectant used: 7e. Sealing materials used (check all that apply): □Neat Cement Grout □Bentonite Chips or Pellets□Sand Cement Grout □Dry Clay □Concrete Grout □Drill Cuttings □Specialty Grout □Gravel □Bentonite Slurry □Other (explain under 7g) 7f. For each material selected above, provide amount of materials used: 7g. Provide a brief description of the abandonment procedure: 8.Certification: Signature of Certified Well Contractor or Well Owner Date By signing this form, I hereby certify that the well(s) was (were) abandoned in accordance with 15A NCAC 02C .0100 or 2C .0200 Well Construction Standards and that a copy of this record has been provided to the well owner. 9.Site diagram or additional well details: You may use the back of this page to provide additional well site details or wellabandonment details. You may also attach additional pages if necessary. SUBMITTAL INSTRUCTIONS 10a. For All Wells: Submit this form within 30 days of completion of well abandonment to the following: Division of Water Resources, Information Processing Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617 10b. For Injection Wells: In addition to sending the form to the address in 10a above, also submit one copy of this form within 30 days of completion of well abandonment to the following: Division of Water Resources, Underground Injection Control Program, 1636 Mail Service Center, Raleigh, NC 27699-1636 10c. For Water Supply & Injection Wells: In addition to sending the form to the address(es) above, also submit one copy of this form within 30 days of completion of well abandonment to the county health department of the county where abandoned. For Internal Use ONLY: John Allen 4196-B ~ 2.4 AmeriProbe NCDEQ INC. 29956 30 lbs of Neat Cement 2/16/24 Grouted from the bottom up using a 1'' tremie pipe until filled to the surface. Capped the flushmount manhole with concrete at the surface. J & J Mart 905 S Main St., Star, NC 27356 3/6/24 Montgomery 35.3816976 79.7789403 MW-1 50' 2'' 41' WithersRavenel Our People. Your Success.      APPENDIX C   AFVR CALCULATIONS & DISPOSAL MANIFEST      AGGRESSIVE FLUID VAPOR RECOVERY EVENT SITE NAME: INCIDENT NUMBER: DEPTH TO LNAPL/GROUNDWATER: INDICATE AVERAGE HYDRAULIC CONDUCTIVITY (if known):‐ IDENTIFY THE WELL I.D. OF EACH WELL USED FOR AFVR:MW‐1 (2") TOTAL GALLONS OF PRODUCT/WATER RECOVERED IN AFVR TRUCK TANK (gallons):572 gallons (petroleum contaminated water) DRY STANDARD CUBIC FEET PER MINUTE (DSCFM) AIR FLOW CALCULATIONS (Qstd) Date Time Vacuum Velocity Pipe ID Temp Rel Humid Water Qstd(inches of Hg) (ft/min) (in) (°F) (%/100) Vapor (Vol%) (flow)2/27/2024 8:15 20 1068 6 66.8 100 0 2102/27/2024 8:30 19 845 6 81.7 100 0 1622/27/2024 8:45 20 781 6 95.7 100 0 1462/27/2024 9:00 20 1154 6 97.3 100 0 2152/27/2024 9:15 20 618 6 106.1 100 0 1132/27/2024 9:30 20 270 6 108.3 100 0 492/27/2024 9:45 20 868 6 107.4 100 0 1592/27/2024 10:00 20 1174 6 110.2 100 0 2132/27/2024 10:15 20 1155 6 107.5 100 0 2112/27/2024 10:45 20 1116 6 113 100 0 2022/27/2024 11:15 20 1183 6 113.6 100 0 2142/27/2024 11:45 19 1178 6 106.6 100 0 2162/27/2024 12:15 19 1291 6 110.5 100 0 2352/27/2024 12:45 19 1149 6 114.3 100 0 2072/27/2024 13:15 19 1153 6 114.6 100 0 2082/27/2024 13:45 19 1164 6 117.1 100 0 2092/27/2024 14:15 19 1215 6 120.1 100 0 2172/27/2024 14:45 19 1167 6 116 100 0 2102/27/2024 15:15 20 1091 6 118.6 100 0 1952/27/2024 15:45 19 1077 6 118.1 100 0 1932/27/2024 16:15 20 1184 6 115.2 100 0 213 NOTESQstd = Flow at DSCFMVacuum = The level of vacuum being applied should be recorded from the vacuum truck tank (inches of Hg)Velocity = The rate at which air flows is measured at the blower discharge piping (anemometer or pitot tube)Pipe ID = The inside diameter of the blower discharge piping (from the vacuum truck)Temperature = The temperature of the air stream exiting the blower discharge piping (dry bulb temp., in deg.°F)Relative humidity = The % relative humidity of the air stream exiting the blower discharge piping Bwsw = water vapor % by weight, i.e., pounds of water per pound of dry air, derived from the Psychrometric chart (temp Vs relative humidity) Bws = water vapor % by volume EQUATIONS Bws = (Bwsw/18 lb‐mole H20)/[(1/28.84 lb‐mole dry air) + (Bwsw/18 lb‐mole H2O)] Qstd = (1‐Water Vapor) * velocity * (PI * (diameter/24)2) * (528°R/(Temp + 460)) J&J Mart29956 MW‐1 =No LNAPL / 40.68‐ft to GW Page 1 of 2 AGGRESSIVE FLUID VAPOR RECOVERY EVENT SITE NAME: INCIDENT NUMBER: DEPTH TO LNAPL/GROUNDWATER: INDICATE AVERAGE HYDRAULIC CONDUCTIVITY (if known):‐ IDENTIFY THE WELL I.D. OF EACH WELL USED FOR AFVR:MW‐1 (2") TOTAL GALLONS OF PRODUCT/WATER RECOVERED IN AFVR TRUCK TANK (gallons):572 gallons (petroleum contaminated water) J&J Mart29956 MW‐1 =No LNAPL / 40.68‐ft to GW EMISSION CALCULATIONSElapsed Time Flow PPMmeasured PPMwet PPMdry K PPMconc Cc:m Cc PMRc PMRg PMR (min) (DSCFM) (ppm)(#C ‐ gas)(mg/dsm3)(lb/dscf) (lb/hr) (lb/hr) (lb)0 210 62.4 62.4 62 4 250 125 7.7751E‐06 0.10 0.11 015 162 105.4 105.4 105 4 422 210 1.3133E‐05 0.13 0.15 0.0430 146 242.8 242.8 243 4 971 485 3.0253E‐05 0.26 0.31 0.0845 215 256.3 256.3 256 4 1025 512 3.1935E‐05 0.41 0.48 0.1260 113 258.6 258.6 259 4 1034 516 3.2222E‐05 0.22 0.25 0.067549 178.2 178.2 178 4 713 356 2.2204E‐05 0.07 0.08 0.0290 159 270.3 270.3 270 4 1081 539 3.368E‐05 0.32 0.37 0.09105 213 222.4 222.4 222 4 890 444 2.7711E‐05 0.35 0.41 0.10120 211 286.8 286.8 287 4 1147 572 3.5735E‐05 0.45 0.52 0.13150 202 272.9 272.9 273 4 1092 545 3.4004E‐05 0.41 0.48 0.24180 214 269.8 269.8 270 4 1079 538 3.3617E‐05 0.43 0.50 0.25210 216 245.3 245.3 245 4 981 490 3.0565E‐05 0.40 0.46 0.23240 235 200.7 200.7 201 4 803 401 2.5007E‐05 0.35 0.41 0.20270 207 269.5 269.5 270 4 1078 538 3.358E‐05 0.42 0.48 0.24300 208 269.8 269.8 270 4 1079 538 3.3617E‐05 0.42 0.49 0.24330 209 279.5 279.5 280 4 1118 558 3.4826E‐05 0.44 0.51 0.25360 217 278.8 278.8 279 4 1115 556 3.4739E‐05 0.45 0.52 0.26390 210 292.1 292.1 292 4 1168 583 3.6396E‐05 0.46 0.53 0.27420 195 272.4 272.4 272 4 1090 544 3.3941E‐05 0.40 0.46 0.23450 193 296.6 296.6 297 4 1186 592 3.6957E‐05 0.43 0.50 0.25480 213 277.2 277.2 277 4 1109 553 3.4539E‐05 0.44 0.51 0.26Total emissions in pounds 3.56 Gallons of Gasoline Removed: =Gallons = 0.74*8.34lbs/gallon 0.56963 Gallons of Gasoline Removed as Vapor NOTES PPMmeasured = Actual measurements (ppm) taken with a OVA or TVA at the blower discharge piping PPMwet = "wet" concentration PPMdry = "dry" concentration K = Number of carbons in calibration gas:  (Methane K = 1, Propane K = 3, Isobutylene = 4, Hexane K = 6) PPMc= PPMv, Volumetric concentration of VOC emissions as carbon, dry basis at STP Cc:m = mg/dsm3, mass concentration of VOC emissions as carbon Mc = 12.01 mg/mg‐mole, molecular weight of carbon K3 = 24.07 dsm3/106 mg‐mole, mass to volume conversion factor at STP Cc = lb/dcsf, mass concentration of VOC emissions as carbon, dry basis at STP PMRc = lb/hr, pollutant mass removal rate of VOC's as carbon PMRg = lb/hr, pollutant mass removal rate of of VOC's as gasoline PMR = lb, pollutant mass removal of VOC's as gasolineEQUATIONS PPMwet = PPMmeasured Cc = (Cc:m)(62.43x10‐9 lb‐m3/mg‐ft3) PPMdry = (PPMwet)/(1‐Bws)PMRc = (Cc)(Qstd)(60 min/hr) PPMc = (PPMd)(K)PMRg = (PMRc)(Mg/Mcg) Cc:m = (PPMc)(Mc / K3)PMR = (PMRg)(#minutes/60) Page 2 of 2 WithersRavenel Our People. Your Success.      APPENDIX D    LABORATORY ANALYTICAL REPORT & CHAIN OF CUSTODY            Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.   4/2/2024 Withers & Ravenel Liz Allyn 115 Mackenan Dr. BUILDING 117 Cary, NC, 27511 Ref: Analytical Testing Revised Lab Report Number: 24-075-0052 Client Project Description: J&J Mart 23-0307-CR Dear Liz Allyn: Waypoint Analytical, LLC (Charlotte) received sample(s) on 3/15/2024 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 33 Certification Summary Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC State Program Lab ID Expiration Date 07/31/202437735State ProgramNorth Carolina 12/31/2024402State ProgramNorth Carolina 07/31/202499012State ProgramSouth Carolina 12/31/202399012State ProgramSouth Carolina Page 1 of 1 00016/24-075-0052 Page 2 of 33 Report Number: Sample Summary Table Client Project Description: 24-075-0052 J&J Mart 23-0307-CR Lab No Client Sample ID Matrix Date Collected Date Received 03/13/2024 13:40Aqueous 99465 MW-1 03/15/2024 13:30 03/13/2024 14:10Aqueous 99466 MW-2 03/15/2024 13:30 03/13/2024 13:10Aqueous 99467 MW-3 03/15/2024 13:30 Page 3 of 33 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-075-0052 Report Limit Project:J&J Mart V 99465MW-1 2350 03/26/2024 21:136200BAcetoneµg/L 1000 34900 03/27/2024 21:496200BBenzeneµg/L 500 7790 03/26/2024 21:136200BDi-Isopropyl Ether (DIPE)µg/L 50.0 256 03/26/2024 21:136200B1,2-Dibromoethane µg/L 50.0 419 03/26/2024 21:136200B1,2-Dichloroethane µg/L 50.0 4310 03/26/2024 21:136200BEthylbenzeneµg/L 50.0 206 03/26/2024 21:136200B2-Hexanone µg/L 100 185 03/26/2024 21:136200BIsopropylbenzeneµg/L 50.0 1060 03/26/2024 21:136200BMethyl Ethyl Ketone (MEK)µg/L 500 9900 03/26/2024 21:136200BMethyl tert-butyl ether (MTBE)µg/L 100 110 03/26/2024 21:136200B4-Methyl-2-Pentanone µg/L 100 665 03/26/2024 21:136200BNaphthaleneµg/L 100 436 03/26/2024 21:136200Bn-Propylbenzene µg/L 50.0 60600 03/27/2024 21:496200BTolueneµg/L 500 2890 03/26/2024 21:136200B1,2,4-Trimethylbenzene µg/L 50.0 720 03/26/2024 21:136200B1,3,5-Trimethylbenzene µg/L 50.0 7320 03/26/2024 21:136200Bo-Xylene µg/L 50.0 14300 03/26/2024 21:136200Bm,p-Xylene µg/L 100 21600 03/26/2024 21:136200BXylene (Total)µg/L 50.0 V 99466MW-2 475 03/26/2024 21:396200BBenzeneµg/L 50.0 5460 03/26/2024 21:396200BEthylbenzeneµg/L 50.0 228 03/26/2024 21:396200BIsopropylbenzeneµg/L 50.0 775 03/26/2024 21:396200BNaphthaleneµg/L 100 530 03/26/2024 21:396200Bn-Propylbenzene µg/L 50.0 29300 03/27/2024 22:136200BTolueneµg/L 500 3520 03/26/2024 21:396200B1,2,4-Trimethylbenzene µg/L 50.0 849 03/26/2024 21:396200B1,3,5-Trimethylbenzene µg/L 50.0 9340 03/26/2024 21:396200Bo-Xylene µg/L 50.0 17500 03/26/2024 21:396200Bm,p-Xylene µg/L 100 26800 03/26/2024 21:396200BXylene (Total)µg/L 50.0 V 99467MW-3 18.9 03/26/2024 08:286200BBenzeneµg/L 0.500 1.02 03/26/2024 08:286200BDi-Isopropyl Ether (DIPE)µg/L 0.500 53.7 03/26/2024 08:286200BEthylbenzeneµg/L 0.500 9.68 03/26/2024 08:286200B2-Hexanone µg/L 1.00 Page 4 of 33 Summary of Detected Analytes QualifiersAnalyzedUnitsResult Report Number: Client Sample ID Method Parameters Lab Sample ID 24-075-0052 Report Limit Project:J&J Mart V 99467MW-3 1.93 03/26/2024 08:286200BIsopropylbenzeneµg/L 0.500 9.10 03/26/2024 08:286200BMethyl Ethyl Ketone (MEK)µg/L 5.00 4.03 03/26/2024 08:286200B4-Methyl-2-Pentanone µg/L 1.00 6.77 03/26/2024 08:286200BNaphthaleneµg/L 1.00 4.51 03/26/2024 08:286200Bn-Propylbenzene µg/L 0.500 32600 03/26/2024 23:216200BTolueneµg/L 500 31.6 03/26/2024 08:286200B1,2,4-Trimethylbenzene µg/L 0.500 7.38 03/26/2024 08:286200B1,3,5-Trimethylbenzene µg/L 0.500 90.7 03/26/2024 08:286200Bo-Xylene µg/L 0.500 179 03/26/2024 08:286200Bm,p-Xylene µg/L 1.00 270 03/26/2024 08:286200BXylene (Total)µg/L 0.500 Page 5 of 33   Client: Withers & Ravenel CASE NARRATIVE Project: J&J Mart Lab Report Number: 24-075-0052 Date: 4/2/2024 Report Comments Revised Report: Revision One The project name has been updated. Volatile Organic Compounds - GC/MS Method 6200B Analyte: 4-Methyl-2-pentanone QC Batch No: V45424/V45323 Target analyte did not meet calibration verification criteria. Analysis of a low level check demonstrated that there was adequate sensitivity to report this compound at the laboratory reporting limit as non-detect. Analyte: Dichlorodifluoromethane QC Batch No: V45292/V45323 Recovery for the LCS exceeded the upper acceptance limit. However, all sample results associated with the batch are below the MQL, so this high bias had no impact upon the client data. The results are considered to be acceptable. Analyte: Ethanol QC Batch No: V45292/V45323 Relative Percent Difference (RPD) for the duplicate analysis was outside of the allowable QC limits. Analyte: Methylene chloride QC Batch No: V45424/V45323 Target analyte did not meet calibration verification criteria. Analysis of a low level check demonstrated that there was adequate sensitivity to report this compound at the laboratory reporting limit as non-detect. Page 6 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-1 99465 Matrix: 3/13/2024 13:40 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF 2350 µg/L 1000Acetone 100 03/26/24 21:13 6200BMSA 34900 µg/L 500Benzene 1000 03/27/24 21:49 6200BENM <50.0 µg/L 50.0Bromobenzene 100 03/26/24 21:13 6200BMSA <100 µg/L 100Bromochloromethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0Bromodichloromethane 100 03/26/24 21:13 6200BMSA <500 µg/L 500Bromoform 100 03/26/24 21:13 6200BMSA <100 µg/L 100Bromomethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0n-Butylbenzene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0sec-Butyl benzene 100 03/26/24 21:13 6200BMSA <200 µg/L 200tert-Butyl benzene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0Carbon Tetrachloride 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0Chlorobenzene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0Chlorodibromomethane 100 03/26/24 21:13 6200BMSA <100 µg/L 100Chloroethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0Chloroform 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0Chloromethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.02-Chlorotoluene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.04-Chlorotoluene 100 03/26/24 21:13 6200BMSA <200 µg/L 2001,2-Dibromo-3-Chloropropane 100 03/26/24 21:13 6200BMSA 256 µg/L 50.01,2-Dibromoethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0Dibromomethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,2-Dichlorobenzene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,3-Dichlorobenzene 100 03/26/24 21:13 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 7 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-1 99465 Matrix: 3/13/2024 13:40 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <50.0 µg/L 50.01,4-Dichlorobenzene 100 03/26/24 21:13 6200BMSA <500 µg/L 500Dichlorodifluoromethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,1-Dichloroethane 100 03/26/24 21:13 6200BMSA 419 µg/L 50.01,2-Dichloroethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,1-Dichloroethene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0cis-1,2-Dichloroethene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0trans-1,2-Dichloroethene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,2-Dichloropropane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,3-Dichloropropane 100 03/26/24 21:13 6200BMSA <200 µg/L 2002,2-Dichloropropane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,1-Dichloropropene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0cis-1,3-Dichloropropene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0trans-1,3-Dichloropropene 100 03/26/24 21:13 6200BMSA <20000 µg/L 20000Ethanol 100 03/26/24 21:13 6200BMSA 4310 µg/L 50.0Ethylbenzene 100 03/26/24 21:13 6200BMSA <300 µg/L 300Hexachlorobutadiene 100 03/26/24 21:13 6200BMSA 7790 µg/L 50.0Di-Isopropyl Ether (DIPE)100 03/26/24 21:13 6200BMSA 185 µg/L 50.0Isopropylbenzene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.04-Isopropyl toluene 100 03/26/24 21:13 6200BMSA 206 µg/L 1002-Hexanone 100 03/26/24 21:13 6200BMSA 1060 µg/L 500Methyl Ethyl Ketone (MEK)100 03/26/24 21:13 6200BMSA <200 µg/L 200Methylene Chloride 100 03/26/24 21:13 6200BMSA 9900 µg/L 100Methyl tert-butyl ether (MTBE)100 03/26/24 21:13 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 8 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-1 99465 Matrix: 3/13/2024 13:40 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF 110 µg/L 1004-Methyl-2-Pentanone 100 03/26/24 21:13 6200BMSA 665 µg/L 100Naphthalene 100 03/26/24 21:13 6200BMSA 436 µg/L 50.0n-Propylbenzene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0Styrene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0 100 03/26/24 21:13 6200BMSA 60600 µg/L 500 1000 03/27/24 21:49 6200BENM <50.0 µg/L 50.01,2,3-Trichlorobenzene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,2,4-Trichlorobenzene 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,1,1-Trichloroethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,1,2-Trichloroethane 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.01,2,3-Trichloropropane 100 03/26/24 21:13 6200BMSA 2890 µg/L 50.01,2,4-Trimethylbenzene 100 03/26/24 21:13 6200BMSA 720 µg/L 50.01,3,5-Trimethylbenzene 100 03/26/24 21:13 6200BMSA <500 µg/L 500Vinyl Acetate 100 03/26/24 21:13 6200BMSA <50.0 µg/L 50.0Vinyl Chloride 100 03/26/24 21:13 6200BMSA 14300 µg/L 100m,p-Xylene 100 03/26/24 21:13 6200BMSA 7320 µg/L 50.0o-Xylene 100 03/26/24 21:13 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 9 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-1 99465 Matrix: 3/13/2024 13:40 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF 21600 µg/L 50.0Xylene (Total)100 03/26/24 21:13 6200B Surrogate: 4-Bromofluorobenzene Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane - d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane - d4 Surrogate: Toluene-d8 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 10 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-2 99466 Matrix: 3/13/2024 14:10 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <1000 µg/L 1000Acetone 100 03/26/24 21:39 6200BMSA 475 µg/L 50.0Benzene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Bromobenzene 100 03/26/24 21:39 6200BMSA <100 µg/L 100Bromochloromethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Bromodichloromethane 100 03/26/24 21:39 6200BMSA <500 µg/L 500Bromoform 100 03/26/24 21:39 6200BMSA <100 µg/L 100Bromomethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0n-Butylbenzene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0sec-Butyl benzene 100 03/26/24 21:39 6200BMSA <200 µg/L 200tert-Butyl benzene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Carbon Tetrachloride 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Chlorobenzene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Chlorodibromomethane 100 03/26/24 21:39 6200BMSA <100 µg/L 100Chloroethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Chloroform 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Chloromethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.02-Chlorotoluene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.04-Chlorotoluene 100 03/26/24 21:39 6200BMSA <200 µg/L 2001,2-Dibromo-3-Chloropropane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,2-Dibromoethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Dibromomethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,2-Dichlorobenzene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,3-Dichlorobenzene 100 03/26/24 21:39 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 11 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-2 99466 Matrix: 3/13/2024 14:10 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <50.0 µg/L 50.01,4-Dichlorobenzene 100 03/26/24 21:39 6200BMSA <500 µg/L 500Dichlorodifluoromethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,1-Dichloroethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,2-Dichloroethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,1-Dichloroethene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0cis-1,2-Dichloroethene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0trans-1,2-Dichloroethene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,2-Dichloropropane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,3-Dichloropropane 100 03/26/24 21:39 6200BMSA <200 µg/L 2002,2-Dichloropropane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,1-Dichloropropene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0cis-1,3-Dichloropropene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0trans-1,3-Dichloropropene 100 03/26/24 21:39 6200BMSA <20000 µg/L 20000Ethanol 100 03/26/24 21:39 6200BMSA 5460 µg/L 50.0Ethylbenzene 100 03/26/24 21:39 6200BMSA <300 µg/L 300Hexachlorobutadiene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Di-Isopropyl Ether (DIPE)100 03/26/24 21:39 6200BMSA 228 µg/L 50.0Isopropylbenzene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.04-Isopropyl toluene 100 03/26/24 21:39 6200BMSA <100 µg/L 1002-Hexanone 100 03/26/24 21:39 6200BMSA <500 µg/L 500Methyl Ethyl Ketone (MEK)100 03/26/24 21:39 6200BMSA <200 µg/L 200Methylene Chloride 100 03/26/24 21:39 6200BMSA <100 µg/L 100Methyl tert-butyl ether (MTBE)100 03/26/24 21:39 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 12 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-2 99466 Matrix: 3/13/2024 14:10 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <100 µg/L 1004-Methyl-2-Pentanone 100 03/26/24 21:39 6200BMSA 775 µg/L 100Naphthalene 100 03/26/24 21:39 6200BMSA 530 µg/L 50.0n-Propylbenzene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Styrene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,1,1,2-Tetrachloroethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,1,2,2-Tetrachloroethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0 100 03/26/24 21:39 6200BMSA 29300 µg/L 500 1000 03/27/24 22:13 6200BENM <50.0 µg/L 50.01,2,3-Trichlorobenzene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,2,4-Trichlorobenzene 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,1,1-Trichloroethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,1,2-Trichloroethane 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.01,2,3-Trichloropropane 100 03/26/24 21:39 6200BMSA 3520 µg/L 50.01,2,4-Trimethylbenzene 100 03/26/24 21:39 6200BMSA 849 µg/L 50.01,3,5-Trimethylbenzene 100 03/26/24 21:39 6200BMSA <500 µg/L 500Vinyl Acetate 100 03/26/24 21:39 6200BMSA <50.0 µg/L 50.0Vinyl Chloride 100 03/26/24 21:39 6200BMSA 17500 µg/L 100m,p-Xylene 100 03/26/24 21:39 6200BMSA 9340 µg/L 50.0o-Xylene 100 03/26/24 21:39 6200BMSA Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 13 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-2 99466 Matrix: 3/13/2024 14:10 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF 26800 µg/L 50.0Xylene (Total)100 03/26/24 21:39 6200B Surrogate: 4-Bromofluorobenzene Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane - d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane - d4 Surrogate: Toluene-d8 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 14 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-3 99467 Matrix: 3/13/2024 13:10 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <10.0 µg/L 10.0Acetone 1 03/26/24 08:28 6200BENM 18.9 µg/L 0.500Benzene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Bromobenzene 1 03/26/24 08:28 6200BENM <1.00 µg/L 1.00Bromochloromethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Bromodichloromethane 1 03/26/24 08:28 6200BENM <5.00 µg/L 5.00Bromoform 1 03/26/24 08:28 6200BENM <1.00 µg/L 1.00Bromomethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500n-Butylbenzene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500sec-Butyl benzene 1 03/26/24 08:28 6200BENM <2.00 µg/L 2.00tert-Butyl benzene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Carbon Tetrachloride 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Chlorobenzene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Chlorodibromomethane 1 03/26/24 08:28 6200BENM <1.00 µg/L 1.00Chloroethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Chloroform 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Chloromethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5002-Chlorotoluene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5004-Chlorotoluene 1 03/26/24 08:28 6200BENM <2.00 µg/L 2.001,2-Dibromo-3-Chloropropane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,2-Dibromoethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Dibromomethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,2-Dichlorobenzene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,3-Dichlorobenzene 1 03/26/24 08:28 6200BENM Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 15 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-3 99467 Matrix: 3/13/2024 13:10 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF <0.500 µg/L 0.5001,4-Dichlorobenzene 1 03/26/24 08:28 6200BENM <5.00 µg/L 5.00Dichlorodifluoromethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,1-Dichloroethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,2-Dichloroethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,1-Dichloroethene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500cis-1,2-Dichloroethene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500trans-1,2-Dichloroethene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,2-Dichloropropane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,3-Dichloropropane 1 03/26/24 08:28 6200BENM <2.00 µg/L 2.002,2-Dichloropropane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,1-Dichloropropene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500cis-1,3-Dichloropropene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500trans-1,3-Dichloropropene 1 03/26/24 08:28 6200BENM <200 µg/L 200Ethanol 1 03/26/24 08:28 6200BENM 53.7 µg/L 0.500Ethylbenzene 1 03/26/24 08:28 6200BENM <3.00 µg/L 3.00Hexachlorobutadiene 1 03/26/24 08:28 6200BENM 1.02 µg/L 0.500Di-Isopropyl Ether (DIPE)1 03/26/24 08:28 6200BENM 1.93 µg/L 0.500Isopropylbenzene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5004-Isopropyl toluene 1 03/26/24 08:28 6200BENM 9.68 µg/L 1.002-Hexanone 1 03/26/24 08:28 6200BENM 9.10 µg/L 5.00Methyl Ethyl Ketone (MEK)1 03/26/24 08:28 6200BENM <2.00 µg/L 2.00Methylene Chloride 1 03/26/24 08:28 6200BENM <1.00 µg/L 1.00Methyl tert-butyl ether (MTBE)1 03/26/24 08:28 6200BENM Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 16 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-3 99467 Matrix: 3/13/2024 13:10 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF 4.03 µg/L 1.004-Methyl-2-Pentanone 1 03/26/24 08:28 6200BENM 6.77 µg/L 1.00Naphthalene 1 03/26/24 08:28 6200BENM 4.51 µg/L 0.500n-Propylbenzene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Styrene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,1,1,2-Tetrachloroethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,1,2,2-Tetrachloroethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500 1 03/26/24 08:28 6200BENM 32600 µg/L 500 1000 03/26/24 23:21 6200BMSA <0.500 µg/L 0.5001,2,3-Trichlorobenzene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,2,4-Trichlorobenzene 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,1,1-Trichloroethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,1,2-Trichloroethane 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.5001,2,3-Trichloropropane 1 03/26/24 08:28 6200BENM 31.6 µg/L 0.5001,2,4-Trimethylbenzene 1 03/26/24 08:28 6200BENM 7.38 µg/L 0.5001,3,5-Trimethylbenzene 1 03/26/24 08:28 6200BENM <5.00 µg/L 5.00Vinyl Acetate 1 03/26/24 08:28 6200BENM <0.500 µg/L 0.500Vinyl Chloride 1 03/26/24 08:28 6200BENM 179 µg/L 1.00m,p-Xylene 1 03/26/24 08:28 6200BENM 90.7 µg/L 0.500o-Xylene 1 03/26/24 08:28 6200BENM Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 17 of 33 , REPORT OF ANALYSISReport Number : Project Information : NC 27511 24-075-0052 01221 Withers & Ravenel 115 Mackenan Dr. BUILDING 117 Liz Allyn Cary 23-0307-CR Received : 03/15/2024 J&J Mart Revised Report Date : 04/02/2024 Original Report Date : 03/29/2024 Sample ID : Lab No : Sampled:MW-3 99467 Matrix: 3/13/2024 13:10 Aqueous Test Results Units MQL By Analytical Method Date / Time Analyzed DF 270 µg/L 0.500Xylene (Total)1 03/26/24 08:28 6200B Surrogate: 4-Bromofluorobenzene Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane - d4 Surrogate: Toluene-d8 Surrogate: 4-Bromofluorobenzene Surrogate: Dibromofluoromethane Surrogate: 1,2-Dichloroethane - d4 Surrogate: Toluene-d8 Qualifiers/ Definitions Method Quantitation LimitMQLDilution FactorDF Page 18 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45292QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45285 Associated Lab Samples: 99467 LRB-V45285 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 03/26/24 00:1310.0< 10.0µg/LAcetone 03/26/24 00:130.500< 0.500µg/LBenzene 03/26/24 00:130.500< 0.500µg/LBromobenzene 03/26/24 00:131.00< 1.00µg/LBromochloromethane 03/26/24 00:130.500< 0.500µg/LBromodichloromethane 03/26/24 00:135.00< 5.00µg/LBromoform 03/26/24 00:131.00< 1.00µg/LBromomethane 03/26/24 00:130.500< 0.500µg/Ln-Butylbenzene 03/26/24 00:130.500< 0.500µg/Lsec-Butyl benzene 03/26/24 00:132.00< 2.00µg/Ltert-Butyl benzene 03/26/24 00:130.500< 0.500µg/LCarbon Tetrachloride 03/26/24 00:130.500< 0.500µg/LChlorobenzene 03/26/24 00:130.500< 0.500µg/LChlorodibromomethane 03/26/24 00:131.00< 1.00µg/LChloroethane 03/26/24 00:130.500< 0.500µg/LChloroform 03/26/24 00:130.500< 0.500µg/LChloromethane 03/26/24 00:130.500< 0.500µg/L2-Chlorotoluene 03/26/24 00:130.500< 0.500µg/L4-Chlorotoluene 03/26/24 00:132.00< 2.00µg/L1,2-Dibromo-3-Chloropropane 03/26/24 00:130.500< 0.500µg/L1,2-Dibromoethane 03/26/24 00:130.500< 0.500µg/LDibromomethane 03/26/24 00:130.500< 0.500µg/L1,2-Dichlorobenzene 03/26/24 00:130.500< 0.500µg/L1,3-Dichlorobenzene 03/26/24 00:130.500< 0.500µg/L1,4-Dichlorobenzene 03/26/24 00:135.00< 5.00µg/LDichlorodifluoromethane 03/26/24 00:130.500< 0.500µg/L1,1-Dichloroethane 03/26/24 00:130.500< 0.500µg/L1,2-Dichloroethane Page 1 of 13Date:04/02/2024 09:11 AM Page 19 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45292QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45285 Associated Lab Samples: 99467 LRB-V45285 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 03/26/24 00:130.500< 0.500µg/L1,1-Dichloroethene 03/26/24 00:130.500< 0.500µg/Lcis-1,2-Dichloroethene 03/26/24 00:130.500< 0.500µg/Ltrans-1,2-Dichloroethene 03/26/24 00:130.500< 0.500µg/L1,2-Dichloropropane 03/26/24 00:130.500< 0.500µg/L1,3-Dichloropropane 03/26/24 00:132.00< 2.00µg/L2,2-Dichloropropane 03/26/24 00:130.500< 0.500µg/L1,1-Dichloropropene 03/26/24 00:130.500< 0.500µg/Lcis-1,3-Dichloropropene 03/26/24 00:130.500< 0.500µg/Ltrans-1,3-Dichloropropene 03/26/24 00:13200< 200µg/LEthanol 03/26/24 00:130.500< 0.500µg/LEthylbenzene 03/26/24 00:133.00< 3.00µg/LHexachlorobutadiene 03/26/24 00:130.500< 0.500µg/LDi-Isopropyl Ether (DIPE) 03/26/24 00:130.500< 0.500µg/LIsopropylbenzene 03/26/24 00:130.500< 0.500µg/L4-Isopropyl toluene 03/26/24 00:131.00< 1.00µg/L2-Hexanone 03/26/24 00:135.00< 5.00µg/LMethyl Ethyl Ketone (MEK) 03/26/24 00:132.00< 2.00µg/LMethylene Chloride 03/26/24 00:131.00< 1.00µg/LMethyl tert-butyl ether (MTBE) 03/26/24 00:131.00< 1.00µg/L4-Methyl-2-Pentanone 03/26/24 00:131.00< 1.00µg/LNaphthalene 03/26/24 00:130.500< 0.500µg/Ln-Propylbenzene 03/26/24 00:130.500< 0.500µg/LStyrene 03/26/24 00:130.500< 0.500µg/L1,1,1,2-Tetrachloroethane 03/26/24 00:130.500< 0.500µg/L1,1,2,2-Tetrachloroethane 03/26/24 00:130.500< 0.500µg/L 03/26/24 00:130.500< 0.500µg/L1,2,3-Trichlorobenzene Page 2 of 13Date:04/02/2024 09:11 AM Page 20 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45292QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45285 Associated Lab Samples: 99467 LRB-V45285 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 03/26/24 00:130.500< 0.500µg/L1,2,4-Trichlorobenzene 03/26/24 00:130.500< 0.500µg/L1,1,1-Trichloroethane 03/26/24 00:130.500< 0.500µg/L1,1,2-Trichloroethane 03/26/24 00:130.500< 0.500µg/L 03/26/24 00:130.500< 0.500µg/L 03/26/24 00:130.500< 0.500µg/L1,2,3-Trichloropropane 03/26/24 00:130.500< 0.500µg/L1,2,4-Trimethylbenzene 03/26/24 00:130.500< 0.500µg/L1,3,5-Trimethylbenzene 03/26/24 00:135.00< 5.00µg/LVinyl Acetate 03/26/24 00:130.500< 0.500µg/LVinyl Chloride 03/26/24 00:131.00< 1.00µg/Lm,p-Xylene 03/26/24 00:130.500< 0.500µg/Lo-Xylene 03/26/24 00:134-Bromofluorobenzene (S)99.2 70-130 03/26/24 00:13Dibromofluoromethane (S)103 70-130 03/26/24 00:131,2-Dichloroethane - d4 (S)99.2 70-130 03/26/24 00:13 98.6 70-130 LCS-V45285 LCSD-V45285Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 46.1 11512047.940.0µg/LAcetone 40-160 3.8 20.0 20.1 10110220.420.0µg/LBenzene 70-130 1.4 20.0 19.6 98.010320.620.0µg/LBromobenzene 70-130 4.9 20.0 21.6 10810821.620.0µg/LBromochloromethane 70-130 0.0 20.0 21.2 10610521.020.0µg/LBromodichloromethane 70-130 0.9 20.0 20.3 10210621.220.0µg/LBromoform 70-130 4.3 20.0 Page 3 of 13Date:04/02/2024 09:11 AM Page 21 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45292QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45285 LCS-V45285 LCSD-V45285Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 29.7 149*13827.620.0µg/LBromomethane 60-140 7.3 20.0 19.7 98.510420.720.0µg/Ln-Butylbenzene 70-130 4.9 20.0 20.4 10210621.120.0µg/Lsec-Butyl benzene 70-130 3.3 20.0 20.9 10510721.420.0µg/Ltert-Butyl benzene 70-130 2.3 20.0 23.6 11811923.820.0µg/LCarbon Tetrachloride 70-130 0.8 20.0 20.6 10310420.820.0µg/LChlorobenzene 70-130 0.9 20.0 21.4 10711122.220.0µg/LChlorodibromomethane 70-130 3.6 20.0 24.4 12212525.020.0µg/LChloroethane 60-140 2.4 20.0 21.4 10710621.220.0µg/LChloroform 70-130 0.9 20.0 18.0 90.089.017.820.0µg/LChloromethane 60-140 1.1 20.0 20.5 10310621.120.0µg/L2-Chlorotoluene 70-130 2.8 20.0 20.3 10210621.120.0µg/L4-Chlorotoluene 70-130 3.8 20.0 22.3 11212024.020.0µg/L1,2-Dibromo-3-Chloropropane 70-130 7.3 20.0 20.5 10310621.220.0µg/L1,2-Dibromoethane 70-130 3.3 20.0 20.7 10410520.920.0µg/LDibromomethane 70-130 0.9 20.0 19.9 99.510621.220.0µg/L1,2-Dichlorobenzene 70-130 6.3 20.0 19.6 98.010320.620.0µg/L1,3-Dichlorobenzene 70-130 4.9 20.0 20.0 10010520.920.0µg/L1,4-Dichlorobenzene 70-130 4.4 20.0 30.7 154*149*29.820.0µg/LDichlorodifluoromethane 60-140 2.9 20.0 19.6 98.098.519.720.0µg/L1,1-Dichloroethane 70-130 0.5 20.0 20.5 10310220.320.0µg/L1,2-Dichloroethane 70-130 0.9 20.0 20.2 10110220.320.0µg/L1,1-Dichloroethene 70-130 0.4 20.0 19.0 95.095.519.120.0µg/Lcis-1,2-Dichloroethene 70-130 0.5 20.0 19.4 97.098.519.720.0µg/Ltrans-1,2-Dichloroethene 70-130 1.5 20.0 19.4 97.096.519.320.0µg/L1,2-Dichloropropane 70-130 0.5 20.0 19.7 98.510220.320.0µg/L1,3-Dichloropropane 70-130 3.0 20.0 Page 4 of 13* QC Fail Date:04/02/2024 09:11 AM Page 22 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45292QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45285 LCS-V45285 LCSD-V45285Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 19.5 97.598.519.720.0µg/L2,2-Dichloropropane 70-130 1.0 20.0 21.9 11010721.420.0µg/L1,1-Dichloropropene 70-130 2.3 20.0 20.4 10210320.520.0µg/Lcis-1,3-Dichloropropene 70-130 0.4 20.0 20.6 10310420.820.0µg/Ltrans-1,3-Dichloropropene 70-130 0.9 20.0 322 64.479.4397500µg/LEthanol 60-140 20.8*20.0 19.8 99.010220.420.0µg/LEthylbenzene 70-130 2.9 20.0 21.7 10910921.820.0µg/LHexachlorobutadiene 70-130 0.4 20.0 15.6 78.079.515.920.0µg/LDi-Isopropyl Ether (DIPE)70-130 1.9 20.0 21.1 10610821.520.0µg/LIsopropylbenzene 70-130 1.8 20.0 20.7 10410721.320.0µg/L4-Isopropyl toluene 70-130 2.8 20.0 17.3 86.591.018.220.0µg/L2-Hexanone 60-140 5.0 20.0 19.4 97.010120.120.0µg/LMethyl Ethyl Ketone (MEK)60-140 3.5 20.0 15.8 79.080.016.020.0µg/LMethylene Chloride 70-130 1.2 20.0 21.9 11010921.820.0µg/LMethyl tert-butyl ether (MTBE)70-130 0.4 20.0 16.2 81.082.516.520.0µg/L4-Methyl-2-Pentanone 60-140 1.8 20.0 17.9 89.510220.420.0µg/LNaphthalene 70-130 13.0 20.0 20.2 10110420.820.0µg/Ln-Propylbenzene 70-130 2.9 20.0 20.0 10099.519.920.0µg/LStyrene 70-130 0.5 20.0 21.8 10911021.920.0µg/L1,1,1,2-Tetrachloroethane 70-130 0.4 20.0 18.4 92.094.518.920.0µg/L1,1,2,2-Tetrachloroethane 70-130 2.6 20.0 21.3 10711022.020.0µg/L 70-130 3.2 20.0 18.1 90.510120.220.0µg/L1,2,3-Trichlorobenzene 70-130 10.9 20.0 19.5 97.510621.220.0µg/L1,2,4-Trichlorobenzene 70-130 8.3 20.0 22.7 11411422.720.0µg/L1,1,1-Trichloroethane 70-130 0.0 20.0 20.1 10110220.420.0µg/L1,1,2-Trichloroethane 70-130 1.4 20.0 21.6 10811122.120.0µg/L 70-130 2.2 20.0 Page 5 of 13* QC Fail Date:04/02/2024 09:11 AM Page 23 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45292QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45285 LCS-V45285 LCSD-V45285Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 25.0 12512825.520.0µg/L 60-140 1.9 20.0 19.9 99.510821.520.0µg/L1,2,3-Trichloropropane 70-130 7.7 20.0 20.4 10210621.120.0µg/L1,2,4-Trimethylbenzene 70-130 3.3 20.0 20.6 10310721.420.0µg/L1,3,5-Trimethylbenzene 70-130 3.8 20.0 20.5 10397.019.420.0µg/LVinyl Acetate 60-140 5.5 20.0 22.0 11011021.920.0µg/LVinyl Chloride 60-140 0.4 20.0 42.8 10710843.340.0µg/Lm,p-Xylene 70-130 1.1 20.0 20.6 10310621.120.0µg/Lo-Xylene 70-130 2.3 20.0 1001014-Bromofluorobenzene (S)70-130 103102Dibromofluoromethane (S)70-130 1011001,2-Dichloroethane - d4 (S)70-130 97.4100 70-130 Page 6 of 13Date:04/02/2024 09:11 AM Page 24 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45324QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45323 Associated Lab Samples: 99465, 99466, 99467 LRB-V45323 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 03/26/24 14:2410.0< 10.0µg/LAcetone 03/26/24 14:240.500< 0.500µg/LBenzene 03/26/24 14:240.500< 0.500µg/LBromobenzene 03/26/24 14:241.00< 1.00µg/LBromochloromethane 03/26/24 14:240.500< 0.500µg/LBromodichloromethane 03/26/24 14:245.00< 5.00µg/LBromoform 03/26/24 14:241.00< 1.00µg/LBromomethane 03/26/24 14:240.500< 0.500µg/Ln-Butylbenzene 03/26/24 14:240.500< 0.500µg/Lsec-Butyl benzene 03/26/24 14:242.00< 2.00µg/Ltert-Butyl benzene 03/26/24 14:240.500< 0.500µg/LCarbon Tetrachloride 03/26/24 14:240.500< 0.500µg/LChlorobenzene 03/26/24 14:240.500< 0.500µg/LChlorodibromomethane 03/26/24 14:241.00< 1.00µg/LChloroethane 03/26/24 14:240.500< 0.500µg/LChloroform 03/26/24 14:240.500< 0.500µg/LChloromethane 03/26/24 14:240.500< 0.500µg/L2-Chlorotoluene 03/26/24 14:240.500< 0.500µg/L4-Chlorotoluene 03/26/24 14:242.00< 2.00µg/L1,2-Dibromo-3-Chloropropane 03/26/24 14:240.500< 0.500µg/L1,2-Dibromoethane 03/26/24 14:240.500< 0.500µg/LDibromomethane 03/26/24 14:240.500< 0.500µg/L1,2-Dichlorobenzene 03/26/24 14:240.500< 0.500µg/L1,3-Dichlorobenzene 03/26/24 14:240.500< 0.500µg/L1,4-Dichlorobenzene 03/26/24 14:245.00< 5.00µg/LDichlorodifluoromethane 03/26/24 14:240.500< 0.500µg/L1,1-Dichloroethane 03/26/24 14:240.500< 0.500µg/L1,2-Dichloroethane Page 7 of 13Date:04/02/2024 09:11 AM Page 25 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45324QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45323 Associated Lab Samples: 99465, 99466, 99467 LRB-V45323 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 03/26/24 14:240.500< 0.500µg/L1,1-Dichloroethene 03/26/24 14:240.500< 0.500µg/Lcis-1,2-Dichloroethene 03/26/24 14:240.500< 0.500µg/Ltrans-1,2-Dichloroethene 03/26/24 14:240.500< 0.500µg/L1,2-Dichloropropane 03/26/24 14:240.500< 0.500µg/L1,3-Dichloropropane 03/26/24 14:242.00< 2.00µg/L2,2-Dichloropropane 03/26/24 14:240.500< 0.500µg/L1,1-Dichloropropene 03/26/24 14:240.500< 0.500µg/Lcis-1,3-Dichloropropene 03/26/24 14:240.500< 0.500µg/Ltrans-1,3-Dichloropropene 03/26/24 14:24200< 200µg/LEthanol 03/26/24 14:240.500< 0.500µg/LEthylbenzene 03/26/24 14:243.00< 3.00µg/LHexachlorobutadiene 03/26/24 14:240.500< 0.500µg/LDi-Isopropyl Ether (DIPE) 03/26/24 14:240.500< 0.500µg/LIsopropylbenzene 03/26/24 14:240.500< 0.500µg/L4-Isopropyl toluene 03/26/24 14:241.00< 1.00µg/L2-Hexanone 03/26/24 14:245.00< 5.00µg/LMethyl Ethyl Ketone (MEK) 03/26/24 14:242.00< 2.00µg/LMethylene Chloride 03/26/24 14:241.00< 1.00µg/LMethyl tert-butyl ether (MTBE) 03/26/24 14:241.00< 1.00µg/L4-Methyl-2-Pentanone 03/26/24 14:241.00< 1.00µg/LNaphthalene 03/26/24 14:240.500< 0.500µg/Ln-Propylbenzene 03/26/24 14:240.500< 0.500µg/LStyrene 03/26/24 14:240.500< 0.500µg/L1,1,1,2-Tetrachloroethane 03/26/24 14:240.500< 0.500µg/L1,1,2,2-Tetrachloroethane 03/26/24 14:240.500< 0.500µg/L 03/26/24 14:240.500< 0.500µg/L Page 8 of 13Date:04/02/2024 09:11 AM Page 26 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45324QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45323 Associated Lab Samples: 99465, 99466, 99467 LRB-V45323 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 03/26/24 14:240.500< 0.500µg/L1,2,3-Trichlorobenzene 03/26/24 14:240.500< 0.500µg/L1,2,4-Trichlorobenzene 03/26/24 14:240.500< 0.500µg/L1,1,1-Trichloroethane 03/26/24 14:240.500< 0.500µg/L1,1,2-Trichloroethane 03/26/24 14:240.500< 0.500µg/L 03/26/24 14:240.500< 0.500µg/L 03/26/24 14:240.500< 0.500µg/L1,2,3-Trichloropropane 03/26/24 14:240.500< 0.500µg/L1,2,4-Trimethylbenzene 03/26/24 14:240.500< 0.500µg/L1,3,5-Trimethylbenzene 03/26/24 14:245.00< 5.00µg/LVinyl Acetate 03/26/24 14:240.500< 0.500µg/LVinyl Chloride 03/26/24 14:241.00< 1.00µg/Lm,p-Xylene 03/26/24 14:240.500< 0.500µg/Lo-Xylene 03/26/24 14:244-Bromofluorobenzene (S)97.6 70-130 03/26/24 14:24Dibromofluoromethane (S)94.8 70-130 03/26/24 14:241,2-Dichloroethane - d4 (S)88.6 70-130 03/26/24 14:24 99.0 70-130 LCS-V45323 LCSD-V45323Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 42.5 10611144.440.0µg/LAcetone 40-160 4.3 20.0 19.5 97.598.519.720.0µg/LBenzene 70-130 1.0 20.0 19.0 95.092.518.520.0µg/LBromobenzene 70-130 2.6 20.0 19.4 97.097.019.420.0µg/LBromochloromethane 70-130 0.0 20.0 18.7 93.591.518.320.0µg/LBromodichloromethane 70-130 2.1 20.0 Page 9 of 13Date:04/02/2024 09:11 AM Page 27 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45324QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45323 LCS-V45323 LCSD-V45323Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 18.8 94.095.019.020.0µg/LBromoform 70-130 1.0 20.0 17.6 88.090.018.020.0µg/LBromomethane 60-140 2.2 20.0 19.3 96.596.519.320.0µg/Ln-Butylbenzene 70-130 0.0 20.0 19.8 99.098.019.620.0µg/Lsec-Butyl benzene 70-130 1.0 20.0 20.0 10099.519.920.0µg/Ltert-Butyl benzene 70-130 0.5 20.0 19.2 96.010020.020.0µg/LCarbon Tetrachloride 70-130 4.0 20.0 19.9 99.510120.120.0µg/LChlorobenzene 70-130 1.0 20.0 19.7 98.595.019.020.0µg/LChlorodibromomethane 70-130 3.6 20.0 15.0 75.078.515.720.0µg/LChloroethane 60-140 4.5 20.0 18.4 92.091.018.220.0µg/LChloroform 70-130 1.0 20.0 17.8 89.088.017.620.0µg/LChloromethane 60-140 1.1 20.0 19.7 98.598.019.620.0µg/L2-Chlorotoluene 70-130 0.5 20.0 19.6 98.097.519.520.0µg/L4-Chlorotoluene 70-130 0.5 20.0 23.3 11711522.920.0µg/L1,2-Dibromo-3-Chloropropane 70-130 1.7 20.0 20.0 10098.019.620.0µg/L1,2-Dibromoethane 70-130 2.0 20.0 18.6 93.091.518.320.0µg/LDibromomethane 70-130 1.6 20.0 20.0 10010120.220.0µg/L1,2-Dichlorobenzene 70-130 0.9 20.0 20.2 10197.019.420.0µg/L1,3-Dichlorobenzene 70-130 4.0 20.0 20.1 10199.019.820.0µg/L1,4-Dichlorobenzene 70-130 1.5 20.0 21.3 10710721.420.0µg/LDichlorodifluoromethane 60-140 0.4 20.0 17.7 88.589.017.820.0µg/L1,1-Dichloroethane 70-130 0.5 20.0 15.6 78.076.515.320.0µg/L1,2-Dichloroethane 70-130 1.9 20.0 17.8 89.084.516.920.0µg/L1,1-Dichloroethene 70-130 5.1 20.0 17.4 87.085.517.120.0µg/Lcis-1,2-Dichloroethene 70-130 1.7 20.0 17.4 87.089.017.820.0µg/Ltrans-1,2-Dichloroethene 70-130 2.2 20.0 19.1 95.593.018.620.0µg/L1,2-Dichloropropane 70-130 2.6 20.0 Page 10 of 13Date:04/02/2024 09:11 AM Page 28 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45324QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45323 LCS-V45323 LCSD-V45323Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 19.5 97.596.019.220.0µg/L1,3-Dichloropropane 70-130 1.5 20.0 18.6 93.091.018.220.0µg/L2,2-Dichloropropane 70-130 2.1 20.0 18.7 93.595.019.020.0µg/L1,1-Dichloropropene 70-130 1.5 20.0 18.8 94.092.018.420.0µg/Lcis-1,3-Dichloropropene 70-130 2.1 20.0 18.1 90.589.017.820.0µg/Ltrans-1,3-Dichloropropene 70-130 1.6 20.0 472 94.491.4457500µg/LEthanol 60-140 3.2 20.0 18.7 93.594.518.920.0µg/LEthylbenzene 70-130 1.0 20.0 21.3 10711122.220.0µg/LHexachlorobutadiene 70-130 4.1 20.0 17.0 85.084.016.820.0µg/LDi-Isopropyl Ether (DIPE)70-130 1.1 20.0 19.6 98.097.019.420.0µg/LIsopropylbenzene 70-130 1.0 20.0 19.5 97.510120.220.0µg/L4-Isopropyl toluene 70-130 3.5 20.0 19.2 96.096.519.320.0µg/L2-Hexanone 60-140 0.5 20.0 18.7 93.592.518.520.0µg/LMethyl Ethyl Ketone (MEK)60-140 1.0 20.0 16.1 80.580.516.120.0µg/LMethylene Chloride 70-130 0.0 20.0 19.0 95.091.018.220.0µg/LMethyl tert-butyl ether (MTBE)70-130 4.3 20.0 17.0 85.082.516.520.0µg/L4-Methyl-2-Pentanone 60-140 2.9 20.0 17.1 85.590.518.120.0µg/LNaphthalene 70-130 5.6 20.0 19.6 98.097.019.420.0µg/Ln-Propylbenzene 70-130 1.0 20.0 20.1 10199.519.920.0µg/LStyrene 70-130 1.0 20.0 18.9 94.596.019.220.0µg/L1,1,1,2-Tetrachloroethane 70-130 1.5 20.0 18.9 94.591.518.320.0µg/L1,1,2,2-Tetrachloroethane 70-130 3.2 20.0 20.8 10410320.620.0µg/L 70-130 0.9 20.0 18.8 94.095.019.020.0µg/L 70-130 1.0 20.0 21.0 10512023.920.0µg/L1,2,3-Trichlorobenzene 70-130 12.9 20.0 22.4 11211422.820.0µg/L1,2,4-Trichlorobenzene 70-130 1.7 20.0 18.3 91.591.018.220.0µg/L1,1,1-Trichloroethane 70-130 0.5 20.0 Page 11 of 13Date:04/02/2024 09:11 AM Page 29 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45324QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45323 LCS-V45323 LCSD-V45323Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 18.8 94.091.518.320.0µg/L1,1,2-Trichloroethane 70-130 2.6 20.0 19.4 97.010220.420.0µg/L 70-130 5.0 20.0 16.6 83.088.517.720.0µg/L 60-140 6.4 20.0 18.8 94.093.018.620.0µg/L1,2,3-Trichloropropane 70-130 1.0 20.0 19.2 96.095.519.120.0µg/L1,2,4-Trimethylbenzene 70-130 0.5 20.0 19.5 97.597.519.520.0µg/L1,3,5-Trimethylbenzene 70-130 0.0 20.0 19.7 98.597.519.520.0µg/LVinyl Acetate 60-140 1.0 20.0 14.8 74.075.015.020.0µg/LVinyl Chloride 60-140 1.3 20.0 41.5 10410341.240.0µg/Lm,p-Xylene 70-130 0.7 20.0 19.8 99.099.519.920.0µg/Lo-Xylene 70-130 0.5 20.0 98.096.84-Bromofluorobenzene (S)70-130 94.693.4Dibromofluoromethane (S)70-130 87.488.61,2-Dichloroethane - d4 (S)70-130 100100 70-130 Page 12 of 13Date:04/02/2024 09:11 AM Page 30 of 33 Quality Control Data 24-075-0052Report No: Project Description: Client ID:Withers & Ravenel J&J Mart QC Prep Batch Method: Volatile Organic Compounds - GC/MS 6200B V45424QC Analytical Batch(es): Analysis Method: Analysis Description: 6200 PT QC Prep:V45422 Associated Lab Samples: 99465, 99466 LRB-V45422 Matrix: AQULab Reagent Blank Parameter AnalyzedMQLBlank ResultUnits % Recovery % Rec Limits 03/27/24 12:450.500< 0.500µg/LBenzene 03/27/24 12:450.500< 0.500µg/L 03/27/24 12:454-Bromofluorobenzene (S)96.0 70-130 03/27/24 12:45Dibromofluoromethane (S)101 70-130 03/27/24 12:451,2-Dichloroethane - d4 (S)100 70-130 03/27/24 12:45 103 70-130 LCS-V45422 LCSD-V45422Laboratory Control Sample & LCSD LCSD ResultParameter Max RPD LCSD % Rec LCS %Rec LCS Result Spike Conc.Units % Rec Limits RPD 17.7 88.588.517.720.0µg/LBenzene 70-130 0.0 20.0 18.2 91.092.518.520.0µg/L 70-130 1.6 20.0 97.497.04-Bromofluorobenzene (S)70-130 99.899.4Dibromofluoromethane (S)70-130 1021011,2-Dichloroethane - d4 (S)70-130 105104 70-130 Page 13 of 13Date:04/02/2024 09:11 AM Page 31 of 33 Fed Ex UPS US Postal Client Lab Courier Other : Shipment Receipt Form Customer Number: Customer Name: Report Number:24-075-0052 Withers & Ravenel 01221 Shipping Method Shipping container/cooler uncompromised? Thermometer ID:IRT15 3.8C 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:03/15/2024 09:08:43 Special precautions or instructions included? Comments: Page 32 of 33 Page 33 of 33 WithersRavenel Our People. Your Success.      APPENDIX E   GENERAL STANDARD OPERATING PROCEDURES      Generalized Standard Operating Procedures (Not All Inclusive) WithersRavenel Our People. Your Success. Soil Sampling, Soil Boring and Monitor Well Installation, Well Development Soil borings are installed utilizing a stainless-steel hand auger, direct-push hydraulic drill or auger rotary drill using either a macro core™ sampler, hollow stem augers, or air rotary roller cone bit. Soil borings are typically sampled at discrete intervals from the bucket of a clean stainless steel hand auger, direct push stainless steel sampler with acetate sleeve, or a split barrel sampler. When appropriate, soil samples may be collected from drill cuttings associated with the boring or well installation. Monitor wells are constructed within select soil borings of one, two, or four-inch inside diameter PVC casing and machine slotted screen in accordance with NCAC Title 15A, Subchapter 02C (Well Construction Standards, Criteria and Standards Applicable to Water Supply and Certain Other Wells). Clean-washed “#2 Torpedo Sand” is typically utilized to fill the boring annulus surrounding the well screen, extending to a minimum of 1-foot above the well screen. A minimum 1-foot thick bentonite clay seal is emplaced above the sand pack and hydrated. Neat cement grout is placed in the remaining annulus space from the upper portion of the bentonite seal to within 1-foot of surface grade. In coastal plain areas where shallow groundwater is encountered, a variance to construction standards may be employed to ensure the upper portion of the well screen intersects the upper aquifer surface. Wellheads may be completed with either concrete-set flush mounted traffic-bearing steel skirted manholes with bolt down covers or steel above-ground “stick-up” well protectors set in a concrete pad. The monitoring wells are secured with locking caps. Temporary wells or piezometers may be completed with the PVC riser cut at or above grade, and are abandoned within 24-hours of their installation. Wells may be developed using a bailer, electric submersible pump, pneumatic pump, or peristaltic pump, dependent upon site conditions. When wells are developed by the driller, they may be developed with any of the methods outlined above, in addition to air or water injection. Soil boring logs and well construction details are typically prepared for presentation in a report appendix. Borings completed in bedrock may be drilled using air rotary, coring, or sonic drilling methods. Groundwater Depth to Water Measurements Groundwater level measurements are typically obtained using an electronic water level indicator which registers a tone and/or illuminated light when the probe contacts groundwater. Depth to groundwater measurements are obtained by lowering the probe attached to a cable usually marked in 0.01 foot intervals into the well until the probe of the meter intersects the water surface. The measurement from the top of the riser pipe or top of casing (TOC) to the water level is recorded to the nearest 0.01 foot. The electronic water level indicator probe and exposed probe cable is decontaminated between measurement locations. Generalized Standard Operating Procedures (Not All Inclusive) WithersRavenel Our People. Your Success. Free Product Level Measurements Light Non-Aqueous Phase Liquid (LNAPL) or “free product” present on the water table is measured using an electronic oil/water interface probe. The interface probe has both an audible and illuminating light that indicate when a liquid level is encountered. The oil/water interface probe registers a solid tone and solidly lit light when LNAPL petroleum product is encountered and a beeping tone flashing light when groundwater is encountered. Depth to LNAPL measurements are obtained by lowering the probe attached to a cable marked in 0.01 foot intervals into the well until the probe of the meter intersects the product or groundwater. The measurements from the top of the riser pipe or TOC to the liquid level are recorded to the nearest 0.01 foot. The thickness of LNAPL is calculated by subtracting the depth to LNAPL measurement from the depth to groundwater measurement. The electronic interface probe is decontaminated between measurement locations. Soil Sampling and Field Screening Soil sampling is performed in general accordance with ASTM: 1586-84 where applicable. Sampling procedures are followed to protect the chemical integrity of the soil samples and minimize the potential for cross contamination between sample locations, including discarding of the exterior of the sample which contacts the auger bucket, acetate sleeve, or split barrel sampler, the use of stainless steel sampling equipment, and the thorough decontamination of sampling apparatus prior to use and between sample locations. Soil samples retained as a part of excavation or other intrusive “digging” activities may be collected from the bucket of excavation equipment or using a hand shovel, if appropriate. Care to collect soil samples from excavation equipment includes retrieving native soil from material that has not made contact with the excavating equipment. Samples are collected in sealable bags or by directly filling sample containers as described above. Sampling is performed using new, disposable nitrile gloves for each sample location to ensure sample integrity and minimize the potential for cross contamination or field personnel exposure to contaminants. Sampling equipment such as hand auger extensions and buckets, direct push samplers, split spoons or shovels, are decontaminated prior to their use in the collection of samples. Samples are placed within laboratory grade sample containers provided by the laboratory to which the samples are submitted, labeled, sealed, and placed in an ice filled cooler. An aliquot of the sample is typically placed in a clean sealable bag and allowed to reach ambient air temperature for future screening of volatile vapor content with a photoionization detector (PID), flame-ionization detector (FID) or other portable screening device. Screening of samples with a PID, FID or other field screening device is performed in accordance with device manufacturer specifications for screening, following calibration of the instrument based on manufacturer recommended procedures. Generalized Standard Operating Procedures (Not All Inclusive) WithersRavenel Our People. Your Success. Groundwater Sampling Groundwater samples are generally collected using one of three standard methods – through the use of a dedicated, disposable bailer, a peristaltic pump or submersible electric pump. When sampling with a bailer, a minimum of three well volumes of groundwater are extracted from the well as a means of purging, unless the well is purged to a “dry” state prior to the removal of three volumes of water. Prior to collection of the groundwater sample with the bailer, the water level is allowed to recover to within 80% of the original level measured prior to purging. When sampling with a peristaltic or submersible electric pump, polyethylene (PE) tubing (or equivalent) is emplaced into the screened section of the monitoring well, and the pump is used to extract water through the tubing. When using the either of these methods, general water quality measurements including but not limited to pH, temperature, dissolved oxygen (DO), oxygen reductive potential (ORP), specific conductivity and turbidity may be used as methods for determining when an adequate purge of the well has been conducted. When water quality parameters are measured, the resulting data are included in well purge forms or field notes specific to each site and sampling point. Following the purging of three well volumes of groundwater (in the case of the bailed well) or stability of monitored measurements (in the case of the peristaltic or submersible electric pump), the groundwater sample(s) are introduced directly into sample containers provided by the laboratory to which samples are ultimately submitted for analysis. Any samples requiring chemical preservation are contained in pre-preserved container(s) provided by the laboratory. Sampling is performed using new, disposable nitrile gloves for each sample location to ensure sample integrity and minimize the potential for cross contamination of samples or field personnel exposure to contaminants. Water Supply Well Sampling Sampling of water supply wells is accomplished through the collection of a representative sample from an in-line water tap or other point accessible for sampling. Where possible, the sample is collected from a point prior to any filtration or point of entry (POE) system which might be installed on a well. In some cases, samples will be collected from both pre and post-POE locations. Prior to the collection of samples through an in-place sampling point, the tap or sampling port is cleaned with an Alconox® and deionized water solution, rinsed with deionized water, and again with an isopropyl alcohol (IPA) rinse. In the case of active supply wells (e.g., a well with a useable well pump with an active power supply), the well pump is energized and allowed to run for a minimum of ten (10) minutes time, after which a sample is contained in laboratory grade sample containers as described in the previous section. Water quality parameters may be (but are not necessarily) measured in association with the well purging. Supply wells without active power supplies are not generally sampled, as the well seal cannot be compromised by individuals not certified as a well contractor. However, in the case of a well with no power supply or pump installed, samples could be obtained through the use of a bailer, peristaltic pump or electric submersible pump. Generalized Standard Operating Procedures (Not All Inclusive) WithersRavenel Our People. Your Success. Decontamination Procedures Decontamination procedures employed in the performance of field activities will vary dependent upon the method(s) of sampling performed at any site, but will generally include the following: • Remove excess soil/sludge from any sampling equipment as needed, • Wash and scrub the equipment with a phosphate-free detergent such as Alconox® or Liquinox® in a contaminant-free tap water solution. Use a brush to remove particulate matter and surface films as necessary, • Rinse thoroughly with tap water, • Rinse thoroughly with analyte-free water (deionized water),  Rinse thoroughly with isopropyl alcohol, • Allow the equipment to air dry, • Prevent inadvertent contamination during storage and transport (accomplished through storage of equipment in foil or plastic bags/sheeting). In the case of disposable bailers and tubing utilized for the purging and sampling of wells, these items may be decontaminated prior to their disposal. In general, no decontamination of these items is necessary prior to their use in sampling.