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Home My WebLink AboutAS-3932_41045_CA_MRP_20200224FEDERAL/STATE LEAD MONITORING REPORT Former Buckner Grocery – Incident No. 41045 2 North Fork Road Barnardsville, Buncombe County, North Carolina February 24, 2020 Terracon Project No. 86149630C Prepared for: North Carolina Department of Environmental Quality Division of Waste Management Raleigh, North Carolina Prepared by: Terracon Consultants, Inc. Greenville, South Carolina TABLE OF CONTENTS A. SITE INFORMATION .......................................................................................................... 1 B. EXECUTIVE SUMMARY .................................................................................................... 2 C. SITE HISTORY AND CHARACTERIZATION ..................................................................... 4 C.1 Site Setting .................................................................................................................... 4 C.2 Release Summary ......................................................................................................... 5 C.3 Previous Investigations ................................................................................................ 5 C.4 Water Supply Wells ....................................................................................................... 7 C.5 Surface Water ................................................................................................................ 8 C.6 Land Use Information .................................................................................................... 8 D. ASSESSMENT INFORMATION ...................................................................................... 8 D.1 Site Geology and Hydrogeology .................................................................................. 8 D.2 Sampling Activities ......................................................................................................10 D.2.1 Free Product Evaluation..............................................................................................10 D.2.2 Groundwater Sampling Activities ................................................................................10 D.2.3 Analytical Results........................................................................................................10 E. CONCLUSIONS AND RECOMMENDATIONS ..............................................................11 EXHIBITS Exhibit 1: Topographic Vicinity Map Exhibit 2: Monitoring Well Location Map Exhibit 3: Petroleum CoCs in Groundwater Map Exhibit 4: Water Supply Well Location Map TABLES Table 1: Monitoring Well Construction Information and Historical Groundwater Elevations Table 2: Summary of Groundwater Analytical Results APPENDICES Appendix A: Laboratory Analytical Results and Chain of Custody Forms Appendix B: Photo Log Appendix C: Field Notes Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 1 FEDERAL/STATE LEAD MONITORING REPORT A. SITE INFORMATION Date of Report: February 24, 2020 NCDEQ Incident No: 41045 Facility ID: 0-0000007010 Site Name: Former Buckner Grocery Site Location: 2 North Fork Road Barnardsville, Buncombe County Latitude: N 35.778448 Longitude: W -82.454418 UST Owner/Operator: NA - NCDEQ State Lead Program Current Property Owner: David Buckner et al c/o Bryan Hyder 236 Chestnut Hill Road Burnsville, NC 28714 Current Property Former Cash and Carry Consignment Shop (vacant) Occupant: and mobile home (David Buckner residence) Consultant: Terracon Consultants, Inc. (Contact: George K. Flores) 72 Pointe Circle Greenville, South Carolina 29615 (864) 292-2901 Laboratory: Shealy Environmental Services, Inc. (NCDEQ No. 329) 106 Vantage Point Drive West Columbia, South Carolina 29172 (803) 791-9700 Release Information: Release Date: Discovered August 14, 2012 Estimated Quantity: Unknown Cause of Release: Underground Storage Tank System Currently Active Tanks: None Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 3 The following constituents were detected above their respective 15A NCAC 2L groundwater standards in well MW-1: Benzene was detected at a concentration of 9.1 micrograms per liter (µg/L) above its 2L groundwater standard (1 µg/L); Naphthalene was detected at a concentration of 210 µg/L above its 2L groundwater standard (6 µg/L). N-propylbenzene was detected at a concentration of 81 µg/L above its 2L groundwater standard (70 µg/L); and 1,2,4- trimethylbenzene was detected at a concentration of 530 µg/L above its 2L groundwater standard (400 µg/L). In addition, C9-C12 aliphatics and C9-C10 aromatics were detected at concentrations above their respective 2L groundwater standards in MW-1. N-butylbenzene, sec-butylbenzene, ethylbenzene, isopropylbenzene, p-isopropyltoluene, toluene, total xylenes, and C5-C8 Aliphatics were detected at concentrations below applicable 2L groundwater standards in MW-1. Analysis of the samples collected from the water supply wells indicated no petroleum constituents were present above the laboratory detection limits. The groundwater analytical results from the monitoring well and water supply wells are summarized in Table 2. Copies of the laboratory analytical reports are provided in Appendix A. Based on information obtained during the completion of Federal/State Lead Monitoring activities, Terracon provides the following conclusions and findings. Benzene, naphthalene, n-propylbenzene, 1,2,4-trimethylbenzene, C9-C12 aliphatics, and C9- C10 aromatics are currently detected at concentrations that exceed their respective NCAC 2L Standards in on-site monitoring well MW-1. N-butylbenzene, sec-butylbenzene, ethylbenzene, isopropylbenzene, p-isopropyltoluene, toluene, total xylenes, and C5-C8 Aliphatics were detected at concentrations below applicable 2L groundwater standards in MW-1. No petroleum constituents were detected in water supply wells WSW-2 and WSW-3 during this event. None of the petroleum constituents were detected above Gross Contamination Levels (GCLs). Measurable free product was not detected in the onsite monitoring well, MW-1. Petroleum constituents in the sample collected from MW-1 were detected at lower levels than during the previous sampling event in September 2017 and exhibit and overall decreasing trend since November 2012. Following sample collection, a bioremediation sock was placed in monitoring well MW-1. Based on the data presented in this report, Terracon recommends that MW-1 be sampled in approximately three months to evaluate groundwater quality. Depending on the results of this event, Terracon may recommend that NCDEQ consider closing the incident with land use restrictions. Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 4 C. SITE HISTORY AND CHARACTERIZATION The purpose of this report is to describe Terracon’s recent field activities and present the current status of the groundwater quality at the former Buckner Grocery site. Terracon completed this report to summarize the findings of assessment activities performed on December 11, 2019 at the former Buckner Grocery located at 2 North Fork Road (Barnardsville Highway) in Barnardsville, Buncombe County, North Carolina (Exhibit 1). This Federal/State Lead Monitoring report was prepared for the site in response to a request by the Incident Manager, Mr. Scott Ryals, with the NCDEQ Division of Waste Management, State Lead Program. The Federal/State Lead Groundwater Monitoring Report was prepared in general accordance with the 15A NCAC 2L .0115 regulations and the NCDEQ Underground Storage Tank (UST) Section Guidelines for Assessment and Corrective Action for UST Releases, dated July 15, 2008, revised December 2013, under the supervision of Mr. George K. Flores, a North Carolina Professional Engineer (North Carolina License No. 24723). C.1 Site Setting The Buckner Grocery site is comprised of 1.46 acres and contains an approximate 2,750 square foot commercial building (former Buckner Grocery) formerly occupied by Cash and Carry Consignment Shop and a 720 square foot manufactured residential home that serves as the residence for Mr. David Buckner. The majority of ground covering at the site consists of grass; however, asphalt and gravel parking areas are located along North Fork Road. The southern portion of the property and land beneath the former Buckner Grocery building pad appears to have been raised to the grade of North Fork Road, with the remainder of the site topography gently sloping downward to the west-northwest in the direction of North Fork Creek. The site location is depicted on Exhibit 1. The site parcel is bordered to the north by North Fork Creek with single-family residences beyond. The adjoining parcels to the east include scattered residential homesteads and wooded and agricultural land. The former Buckner Grocery site is bordered to the south by North Fork Road with residential structures beyond. Properties to the west are predominantly residential with some commercial development (US Post Office). Photographs of selected site features are provided in Appendix B. Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 5 C.2 Release Summary A review of historical documentation provided by the NCDEQ indicates that a petroleum release was discovered on the former Buckner Grocery site in August 2012 during UST closure activities performed by Mountain Environmental Group. Soil samples obtained during the UST closure indicated the presence of petroleum constituents above regulatory action levels. A summary of subsequent assessment activities at the site is provided in the Section C.3. C.3 Previous Investigations In August 2012, two 2,000-gallon gasoline USTs and one 1,000-gallon diesel UST were closed by removal at the former Buckner Grocery by Mountain Environmental Group (Mountain). Prior to removal, approximately 1,630-gallons of residual product and water were removed by a vacuum truck. The UST Closure Report prepared by Mountain stated that the USTs were covered by approximately five feet of overburden material and that only enough soil to allow for tank removal was excavated during the closure activities. According to the Mountain report, petroleum odors were indicated from the excavation. Upon removal of the USTs, one soil sample was collected from the bottom of the UST excavation at approximately 11 feet below ground surface (bgs) and analyzed for total petroleum hydrocarbons for diesel range organics and gasoline range organics (TPH-DRO/GRO); analytical results indicated a concentration of 1,740 milligrams per kilogram (mg/kg) for DRO and 289 mg/kg for GRO. In addition, soil samples were collected at depths of approximately 3 feet bgs at the two dispenser locations (Disp-1 and Disp-2) and one product piping run location (P-1). Analytical results indicated DRO/GRO concentrations of 215/144 mg/kg in Disp-1 and 46.7/<8.8 mg/kg in Disp-2. Detectable concentrations of TPH- DRO/GRO were not reported in sample P-1. In November 2012, Force Environmental Service Company, LLC (Force) performed site assessment activities at the former Buckner Grocery site as reported in the Phase I Limited Site Assessment Report (January 2013). According to the report, on November 23, 2012 Force conducted a monitoring well installation and groundwater sampling event. During this scope of work, monitoring well MW-1 was installed to a depth of 12 feet bgs and a groundwater sample was collected and analyzed by EPA Method 6200B, MADEP VPH, and Lead by Method 3030C. Groundwater was reported as 9.43 feet below top of casing (btoc). Analytical results indicated several constituents that exceeded their respective NCAC 2L Standards, as summarized in Table 2. In addition, a receptor survey was conducted of the site and surrounding area with 44 water supply wells identified within a 1,500-foot radius of the site; a surface water body (North Fork Creek) was also identified approximately 200 feet to the north of the site (see Table 1 and Exhibit 2). Groundwater samples were collected from select water supply wells (WSW-1 through WSW- 7) based on their proximity to the site. Water supply well analytical results indicated that the sample collected from the out-of-service supply well WSW-3 contained petroleum constituents under respective 2L Standards for ethylbenzene (9.8 µg/L) and toluene (323 µg/L). The samples Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 6 collected from water supply wells WSW-1, WSW-2, WSW-4, WSW-5, WSW-6, and WSW-7 had no reported detections of petroleum constituents above the laboratory reporting limits. A Risk Characterization analysis performed by Force indicated the site as having a “High Risk” ranking due to the detection of petroleum constituents at concentrations above 2L Standards and the proximity of receptors to the site. The lack of an alternative water supply source was also noted. In August 2014, Terracon Consultants, Inc. (Terracon) completed a groundwater sampling event at the former Buckner Grocery site as reported in the Federal/State-Lead Monitoring Report (September 2014). Onsite monitoring well MW-1 as well as onsite and offsite water supply wells WSW-1 through WSW-7 were sampled for VOCs by EPA Method 6200 including xylenes, MTBE, EDB and IPE. Monitoring well MW-1 was additionally analyzed by the MADEP VPH method for quantifying aliphatic and aromatic hydrocarbon concentrations. Analytical results indicated that benzene was detected at a concentration above its 15A NCAC 2L groundwater standard (1 µg/L) in well MW-1 (56.9 µg/L). Ethylbenzene was detected at a concentration above its 2L groundwater standard (600 µg/L) in well MW-1 (1,410 µg/L). Naphthalene was detected at a concentration above its 2L groundwater standard (6 µg/L) in well MW-1 (963 µg/L). In addition, isopropylbenzene, n-propylbenzene, 1,2,4-trimethylbenzene, C5- C8 aliphatics, C9-C12 aliphatics, and C9-C10 aliphatics were detected at concentrations above their respective 2L groundwater standards in MW-1. No free phase petroleum product was detected in monitoring well MW-1. Ethylbenzene was detected at a concentration below NCAC 2L standards in the out-of-service water supply well WSW-3, and no petroleum constituents were detected in water supply wells WSW-1, WSW-2, WSW-4, WSW-5, WSW-6 and WSW-7. In February 2015, Terracon completed a groundwater sampling event at the site as reported in the Pre-CAP Monitoring Report (March 2015). Onsite monitoring well MW-1 as well as onsite and offsite water supply wells WSW-1 through WSW-6 were sampled for VOCs by EPA Method 6200 including xylenes, MTBE, EDB and IPE. Water supply well WSW-7 was observed to be inactive; thus, a sample was not collected. The sample collected from monitoring well MW-1 was additionally analyzed by the MADEP VPH method for quantifying aliphatic and aromatic hydrocarbon concentrations. Analytical results indicated that benzene was detected at a concentration above its 2L groundwater standard (1 µg/L) in well MW-1 (61.8 µg/L). Ethylbenzene was detected at a concentration above its 2L groundwater standard (600 µg/L) in well MW-1 (892 µg/L). Naphthalene was detected at a concentration above its 2L groundwater standard (6 µg/L) in well MW-1 (715 µg/L). In addition, 1,2,4-trimethylbenzene, C9-C12 aliphatics, and C9-C10 aliphatics were detected at concentrations above their respective 2L groundwater standards in MW-1. No free phase petroleum product was detected in monitoring well MW-1. Ethylbenzene was detected at a concentration below NCAC 2L standards in the out-of-service water supply well WSW-3, and no petroleum constituents were detected in water supply wells WSW-1, WSW-2, WSW-4, WSW- 5 and WSW-6. Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 7 On September 14, 2017, Terracon mobilized to the site to sample the onsite monitoring well and water supply wells (MW-1 and WSW-1, respectively) and offsite monitoring wells (WSW-2 through WSW-7). Onsite monitoring well MW-1 as well as onsite and offsite water supply wells WSW-1 through WSW-5 were sampled for VOCs by EPA Method 6200 including xylenes, MTBE, EDB and IPE. The sample collected from monitoring well MW-1 was additionally analyzed by the MADEP VPH method for quantifying aliphatic and aromatic hydrocarbon concentrations. Benzene, ethylbenzene, isopropylbenzene, naphthalene, n-propylbenzene, 1,2,4- trimethylbenzene, C5-C8 aliphatics, C9-C12 aliphatics and C9-C10 aromatics were detected at concentrations that exceeded their respective NCAC 2L Standards in on-site monitoring well MW- 1. N-butylbenzene, sec-butylbenzene, p-isopropyltoluene and total xylenes were detected at concentrations below applicable 2L groundwater standards in MW-1. No free phase petroleum product was detected in monitoring well MW-1. No petroleum constituents were detected in water supply wells WSW-1, WSW-2, WSW-3, WSW-4 and WSW-5 during the event. Water supply wells WSW-6 and WSW-7 could not be sampled during the event because Terracon was unable to obtain permission from the respective property owners. C.4 Water Supply Wells Forty-four water supply wells were identified within a 1,500-foot radius of the former Buckner Grocery site by Force in November 2012. During the December 2019 sampling event, groundwater samples were collected from water supply wells WSW-2 and WSW-3 based upon their proximity to the site. Terracon was unable to obtain permission from the owner of water supply well WSW-1 at the time of the sampling event; therefore, this well was not sampled. Water supply well WSW-1 is located onsite approximately 180 feet to the east-northeast and positioned topographically cross-gradient from the presumed source area. The nearest water supply wells (WSW-2 and WSW-3) are located west of the site approximately 120 feet and 50 feet, respectively, and are positioned topographically downgradient from the presumed source area. The construction details of these wells are not known to Terracon. Water supply well WSW-3 was reported as “Out-of-Service” in the Force January 2013 report. The remaining wells (WSW-1 and WSW-2) were indicated as “Active” within the same report. Groundwater samples for water supply wells WSW-1 through WSW-3 were collected by Force on November 23, 2012 and analyzed for VOCs by EPA Method 6200B. Groundwater samples for water supply wells WSW-2 and WSW-3 were collected by Terracon on December 11, 2019 and analyzed for VOCs by EPA Method 6200 (including MTBE, EDB, and IPE). Identified water supply well locations are depicted in Exhibits 2 through 4. Current and historic groundwater sampling results are presented in Table 2. Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 8 C.5 Surface Water According to the USGS topographic map (Exhibit 1), the site and surrounding area is situated within a valley, bounded to the north by John Anders Ridge and to northeast by Razor Mountain, both features trending northeast to southwest; to the east by Burt Mountain which trends east to west; to the south by Carson Mountain and southwest by Wildcat Mountain both features trending south to north. The site is located within the local watershed for Dillingham Creek which is approximately 1,000 feet southwest of the site. In addition, the former Buckner Grocery is bordered to the north by the confluences of North Fork Creek and Poverty Branch. Surface waters are depicted on Exhibit 1. C.6 Land Use Information The site parcel is bordered to the north by North Fork Creek with single-family residences beyond. The adjoining parcels to the east include scattered residential homesteads and wooded and agricultural land. The former Buckner Grocery site is bordered to the south by North Fork Road with residential structures beyond. Properties to the west are predominantly residential with some commercial development (US Post Office). D. ASSESSMENT INFORMATION D.1 Site Geology and Hydrogeology The following resources were reviewed to evaluate site-specific geological and hydrogeological characteristics. Barnardsville Quadrangle, North Carolina, USGS 7.5-minute series topographic map, dated 1998 (Exhibit 1). Geologic Map of North Carolina, dated 1985. The Geology of the Carolinas, Carolina Geological Society Fiftieth Anniversary Volume, edited by J. Wright Horton, Jr., and Victor A. Zullo, The University of Tennessee Press, dated 1991. Soil Survey of Buncombe County, North Carolina, US Department of Agriculture, Natural Resources Conservation Service, Web Soil Survey via the Internet, http://websoilsurvey.nrcs.usda.gov/app/. The site is located within the Blue Ridge Physiographic Province, which is a mountainous area of steep ridges, inter-mountain basins and valleys that intersect at all angles, giving the area its rugged character. Bedrock underlying the Blue Ridge Physiographic Province consists of many different types of metamorphic and igneous rocks that are complexly related. The main rock types are gneiss and schist of various compositions; however, extremely fine-grained rocks, such as phyllite and metamorphosed volcanic tuff, ash, and flows are common in places. Locally, quartzite Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 9 and marble are present. Most of these metamorphic rocks were originally sediments, but some of them were originally igneous or volcanic materials. The degree of heat and pressure to which the original rocks were subjected, coupled with the degree of structural deformation (principally folding and shearing) that they have undergone, has determined the final texture and mineralogy of the rocks. Most of the rocks have undergone several periods of metamorphism. Locally, they contain mineralized zones, some of which are ore bearing. In-place chemical and physical weathering of parent rocks typically form residual soils in the Blue Ridge region. Weathering is facilitated by the presence of fractures, joints, and less resistant minerals in the bedrock. In areas not altered by erosion, alluvial deposition, or the activities of man, the typical residual soil profile consists of clay-rich unconsolidated materials at the surface, transitioning to sandy silts and silty sands at depth. Typically, the boundary between soil and rock is not sharply defined. This transitional zone is termed “partially weathered rock” or saprolite. Information obtained from the Web Soil Survey for Buncombe County depicts soils on the site as predominately Statler Loams, 1-5% slopes (StB). In the Blue Ridge, groundwater generally occurs in pore spaces within soils and in the structural features present in the underlying bedrock (i.e. joints, fractures, and faults). Fractures in the crystalline rocks of the Blue Ridge Physiographic Province traditionally have been described as steeply inclined, intersecting openings that are generally more numerous at shallower depths. Recharge to the water table is primarily by precipitation infiltrating the surficial soils and percolating downward under the influence of gravity to the water table (vadose zone). Typically, the water table is not a level surface, but a subdued reflection of the land surface. The depth to the water table is not consistent and is dependent upon several factors that include the amount of rainfall, permeability of the soil, the extent of fracturing in the underlying rock and the influences of groundwater pumping. Groundwater typically flows in directions parallel to the ground surface and under the influence of gravity, migrates to discharge points such as surface water features, the toes of slopes, or natural springs. Fluctuations in the depth of the water table can be expected depending on variations in precipitation, surface water run-off and other factors not evident at the time of our work. Normally, the highest levels of the water table occur in late winter and spring and the lowest levels occur in the late summer and fall. Based on the observed topographic gradient, shallow groundwater is expected to flow to the west-northwest from the site, toward North Fork Creek. Bedrock at the site is described as muscovite-biotite schist associated with the Ashe Metamorphic Suite. Additional information regarding site-specific geology was not provided to Terracon. Depth to water at the site was gauged at 7.60 feet below TOC in on-site monitoring well MW-1 during the December 2019 sampling event. Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 10 D.2 Sampling Activities D.2.1 Free Product Evaluation Terracon mobilized to the site on December 11, 2019 to conduct the groundwater monitoring assessment activities as requested by the NCDEQ. Terracon gauged well MW-1 for the presence of free product; however, no free product was measured in the well. The approximate location of the well is shown in Exhibit 2. D.2.2 Groundwater Sampling Activities Prior to sampling, MW-1 was purged using low-flow sampling techniques using an Alexis® peristaltic pump and field parameters were monitored using a Horiba® water quality meter. The well was purged until water quality data from three consecutive readings stabilized to within ten- percent. Once sampling was complete, the well was allowed to recharge to within 90 percent of the observed static water level and a bio sock was placed in MW-1. Current and historical groundwater elevation measurements are provided in Table 1. Terracon also sampled onsite and offsite water supply wells. The sample from active water supply well WSW-2 was obtained by allowing water to flow from the spigot for approximately 5 to 10 minutes prior to collecting the sample. Flow from the spigot was reduced when the sample was collected. Samples were collected at or as close as possible to the wellhead. Terracon was unable to obtain permission from the owner of water supply well WSW--1 at the time of the sampling event; therefore, this well was not sampled. During Terracon’s site visit, a groundwater sample was collected from the out-of-service water supply well WSW-3. WSW-3 is completed slightly above grade, with a 6-inch steel casing and a removable well cap. No indications of electrical wiring or plumbing were observed. A sample was collected without purging using a new, disposable bailer. Samples were placed in laboratory-supplied glassware, labeled, and stored in an ice-packed cooler. The samples, along with chain-of-custody documentation, were submitted to Shealy for analysis of VOCs by EPA Method 6200 (including MTBE, IPE, and EDB) and by the MADEP VPH method for measuring aliphatic and aromatic hydrocarbon concentrations (MW-1 only). D.2.3 Analytical Results Based on our review of the laboratory analytical report, petroleum constituents were identified at concentrations above the laboratory reporting limits in monitoring well MW-1, as noted below. Benzene was detected at a concentration of 9.1 µg/L above its 2L groundwater standard (1 µg/L). Naphthalene was detected at a concentration of 210 µg/L above its 2L groundwater standard (6 µg/L). N-propylbenzene was detected at a concentration of 81 µg/L above its 2L groundwater standard (70 µg/L). 1,2,4-trimethylbenzene was detected at a concentration of 530 µg/L above its Former Buckner Grocery Barnardsville, North Carolina Project Number 86149630C; Incident No. 41045 February 24, 2020 Responsive ■ Resourceful ■ Reliable 11 2L groundwater standard (400 µg/L). In addition, C9-C12 aliphatics and C9-C10 aromatics were detected at concentrations above their respective 2L groundwater standards in MW-1. N-butylbenzene, sec-butylbenzene, ethylbenzene, isopropylbenzene, p-isopropyltoluene, toluene, total xylenes, and C5-C8 Aliphatics were detected at concentrations below applicable 2L groundwater standards in MW-1. Analysis of the samples collected from the water supply wells indicated no petroleum constituents were present above the laboratory detection limits. The groundwater analytical results from the monitoring well and water supply wells are summarized in Table 2. A copy of the laboratory analytical report is provided in Appendix A. E. CONCLUSIONS AND RECOMMENDATIONS Based on information obtained during the completion of Federal/State Lead Monitoring activities, Terracon provides the following conclusions and findings. Benzene, naphthalene, n-propylbenzene, 1,2,4-trimethylbenzene, C9-C12 aliphatics, and C9- C10 aromatics are currently detected at concentrations that exceed their respective NCAC 2L Standards in on-site monitoring well MW-1. N-butylbenzene, sec-butylbenzene, ethylbenzene, isopropylbenzene, p-isopropyltoluene, toluene, total xylenes, and C5-C8 Aliphatics were detected at concentrations below applicable 2L groundwater standards in MW-1 No petroleum constituents were detected in water supply wells WSW-2 and WSW-3 during this event. Water supply well WSW-1 could not be sampled during this event because Terracon was unable to obtain permission from the respective property owner. None of the petroleum constituents were detected above GCLs. Measurable free product was not detected in the onsite monitoring well, MW-1. Petroleum constituents in the sample collected from MW-1 were detected at lower levels than during the previous sampling event in September 2017 and exhibit and overall decreasing trend since November 2012. Following sample collection, a bioremediation sock was placed in monitoring well MW-1. Based on the data presented in this report, Terracon recommends that MW-1 be sampled in approximately three months to evaluate groundwater quality. Depending on the results of this event, Terracon may recommend that NCDEQ consider closing the incident with land use restrictions. EXHIBITS 7.5 MINUTE SERIES (TOPOGRAPHIC) Project Mngr: Approved By: Checked By: Drawn By: Project No. Scale: Date: File No.Consulting Engineers and Scientists EXHIBITTOPOGRAPHIC VICINITY MAP 1 FEDERAL / STATE LEAD GROUNDWATER MONITORING REPORT FORMER BUCKNER GROCERY, INCIDENT #41045 2 NORTH FORK ROAD BARNARDSVILLE, NC GF RLW GF/MRF GF 86149630C AS SHOWN LMR86149630C-1 DECEMBER 2019 72 Pointe Circle Greenville, SC 29615 (864) 292-2901 (864) 292-6361 *INDICATES WHICH MAP SITE IS LOCATED ON SITE THIS DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSESLEGENDProject Mngr:Approved By:Checked By:Drawn By:Project No.Scale:Date:File No.Consulting Engineers and ScientistsEXHIBITMONITORING WELL LOCATION MAP2FEDERAL / STATE LEAD GROUNDWATER MONITORING REPORTFORMER BUCKNER GROCERY, INCIDENT # 410452 NORTH FORK ROADBARNARDSVILLE, NCGFRLWGF/MRFGF86149630CAS SHOWNLMR86149630C-2DECEMBER 201972 Pointe CircleGreenville, SC 29615(864) 292-2901(864) 292-6361SITEApproximate Scale0(Feet)140MONITORING WELL LOCATIONSWATER SUPPLY WELLNORTH FORK ROADCHURCHI LL DR IVE POVE R T Y B R A N C H R O A D DILLI N G H A M R O A D WOODEDWOODEDWOODEDFORMERBUCKNERGROCERYFORMERUST BASINFORMERDISPENSERSPOST OFFICE(2031)(3737)BARNARDSVILLEBAPTIST CHURCH(615)BARNARDSVILLEUNITED METHODISTCHURCH1,000 GALLON KEROSENE ASTKKDGG1,000 GALLON DIESEL ASTD2,000 GALLON GASOLINE ASTGMW-1WSW-1WSW-2WSW-3WSW-4WSW-5WSW-7WSW-6(1685)(5)(3)BARNARDSVILLE FREEWILLBAPTIST CHURCH(5)NORTH FORKCREEKWELL HOUSEBARNARDSVILLE HIGHWAY(1692) THIS DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSESLEGENDProject Mngr:Approved By:Checked By:Drawn By:Project No.Scale:Date:File No.Consulting Engineers and ScientistsEXHIBITPETROLEUM COC's IN GROUNDWATER MAP3FEDERAL / STATE LEAD GROUNDWATER MONITORING REPORTFORMER BUCKNER GROCERY, INCIDENT # 410452 NORTH FORK ROADBARNARDSVILLE, NCGFRLWGF/MRFGF86149630CAS SHOWNLMR86149630C-3DECEMBER 201972 Pointe CircleGreenville, SC 29615(864) 292-2901(864) 292-6361SITEApproximate Scale0(Feet)140MONITORING WELL LOCATIONSWATER SUPPLY WELL-NO TARGET ANALYTES DETECTEDDILLI N G H A M R O A D WOODEDWOODEDWOODEDFORMERBUCKNERGROCERYFORMERUST BASINFORMERDISPENSERSPOST OFFICE(2031)(3737)BARNARDSVILLEBAPTIST CHURCH(615)BARNARDSVILLEUNITED METHODISTCHURCH1,000 GALLON KEROSENE ASTKKDGG1,000 GALLON DIESEL ASTD2,000 GALLON GASOLINE ASTGMW-1WSW-1WSW-2WSW-3WSW-4WSW-5WSW-7WSW-6(1685)(5)BARNARDSVILLE FREEWILLBAPTIST CHURCH(5)NORTH FORKCREEKWELL HOUSENOTES: VALUES ABOVE 2L STANDARDS ARE IN RED. VALUES WITH DETECTIONS ARE IN BOLD. GROUNDWATER ANALYTICAL DATA COLLECTED ON DECEMBER 11, 2019WATER SUPPLY WELLMW-1BENZENE (µg/L)ETHYLBENZENE (µg/L)ISOPROPYLBENZENE (µg/L)NAPHTHALENE (µg/L)N-PROPYLBENZENE (µg/L)1,2,4-TRIMETHYLBENZENE (µg/L)XYLENES (TOTAL) (µg/L)9.134036210815306.31,2001,500C9-C12 ALIPHATICS (µg/L)C9-C10 AROMATICS (µg/L)NORTH FORK ROADCHURCHILL DR IVE POVE R T Y B R A N C H R O A DBARNARDSVILLE HIGHWAY(1692)(3)TOLUENE (µg/L)0.91(NOT SAMPLED - INACTIVE)SEC-BUTYLBENZENE2.9P-ISOPROPYLTOLUENE2.168 JC5-C8 ALIPHATICS (µg/L)N-BUTYLBENZENE (µg/L)<0.40MTBE (µg/L)<0.401,3,5-TRIMETHYLBENZENE (µg/L)<0.40(COUILD NOT SAMPLED - NO ACCESS)NSNOT SAMPLEDNSNSNS THIS DIAGRAM IS FOR GENERAL LOCATION ONLY, AND IS NOT INTENDED FOR CONSTRUCTION PURPOSES LEGEND Drawn By: Checked By: Approved By: Project Mngr: File No. Date: Scale: Project No. Consulting Engineers and Scientists EXHIBITWATER SUPPLY WELL LOCATION MAP 4 FEDERAL / STATE LEAD GROUNDWATER MONITORING REPORT FORMER BUCKNER GROCERY, INCIDENT # 41045 2 NORTH FORK ROAD BARNARDSVILLE, NC GF RLW GF/MRF GF 86149630C AS SHOWN LMR86149630C-4 DECEMBER 2019 72 Pointe Circle Greenville, SC 29615 (864) 292-2901 (864) 292-6361 Approximate Scale 0 (Feet) 500 SITE 2 3 4 5 7 6 1 1,000 FT. RADIUS NUMBER CORRESPONDS WITH WATERSUPPLY WELL INFORMATION LISTED IN TABLE # 8 9 1011 12 13 14 15 16 17 18 19 20 21 22 2324 25 26 2728 29 30 3132 33 34 35 36 37 38 3940 41 42 43 44 TABLES TABLE 1 Monitoring Well Construction Information and Historic Groundwater Elevations Former Buckner Grocery Barnardsville, North Carolina Terracon Project No. 86149630C NCDEQ Incident No. 41045 Well Id Date Installed Date Water Level Measured Well Casing Depth (ft. BGS) Screened Interval (x to y ft. BGS) Bottom of Well (ft. BGS) Top of Casing Elevation (ft.) Depth to Water from Top of Casing (ft.) Free Product Thickness (ft.) Groundwater Elevation (ft.)Comments 11/23/2012 9.43 -90.57 8/14/2014 9.43 -90.57 2/10/2015 8.95 -91.05 9/14/2017 8.63 -91.37 12/11/2019 7.60 -92.40 Notes: 1. "-" indicates no free product was measured 2. BGS = Below Ground Surface 3. Groundwater elevation data from 11/23/2012 was extracted from the January 2013 Force Environmental Service Company, LLC report 4. Groundwater elevation data recorded on 8/14/2014 was collected by Terracon Type II11/23/2012MW-1 100122-122 Page 1 of 1 TABLE 2 Summary of Groundwater Analytical Results Former Buckner Grocery Barnardsville, North Carolina Terracon Project No. 86149630C NCDEQ Incident No. 41045 3030C Well/Sample I.D. Date Collected (mm/dd/yy) 11/23/2012 69.3 42.1 <5.0 800 59.40 <5.0 30.1 409 179 11.90 1340 180 82.6 1,240 7,090 2,450 15 8/14/2014 56.9 <5.0 <5.0 1410 98.5 <5.0 11.10 963 255 <5.0 2240 <5.0 54.9 548 9,330 2,490 - 2/10/2015 61.8 <5.0 <5.0 892 29.00 <5.0 5.70 715 50.60 7.20 1110 <5.0 26.8 <500 6,630 1,610 - 9/14/2017 11 15 12 1600 120 8.8 J <8.0 1100 290 <8.0 2700 <8.0 41.4 410 J 7,100 5,400 - 12/11/2019 9.1 <0.40 2.9 340 36 2.1 <0.40 210 81 0.91 530 <0.40 6.3 68 J 1,200 1,500 - 11/23/2012 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 8/14/2014 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 2/10/2015 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 9/14/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 12/11/2019 11/23/2012 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 8/14/2014 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 2/10/2015 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 9/14/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 12/11/2019 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 11/23/2012 <0.50 <0.50 <0.50 9.80 <0.50 <0.50 <0.50 <2.0 <0.50 323 <0.50 <0.50 <1.5 ---- 8/14/2014 <0.50 <0.50 <0.50 1.30 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 2/10/2015 <0.50 <0.50 <0.50 0.78 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 9/14/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 12/11/2019 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 <0.40 11/23/2012 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 8/14/2014 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 2/10/2015 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 9/14/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 12/11/2019 ----------------- MW-1 WSW-1 WSW-2 WSW-3 COULD NOT SAMPLE - NO ACCESS MADEP VPH C5-C8 AliphaticsC9-C12 AliphaticsC9-C10 AromaticsAnalytical Method 1,2,4-TrimethylbenzeneEthylbenzenen-ButylbenzeneContaminant of Concern →Methyl tert-Butyl Ethyl (MTBE)n-PropylbenzeneVOCs - SM 6200B Xylenes (Total)1,3,5-Trimethylbenzenesec-ButylbenzeneWSW-4 LeadIsopropylbenzeneBenzeneNaphthaleneToluenep-IsopropyltoluenePage 1 of 2 TABLE 2 Summary of Groundwater Analytical Results Former Buckner Grocery Barnardsville, North Carolina Terracon Project No. 86149630C NCDEQ Incident No. 41045 3030C Well/Sample I.D. Date Collected (mm/dd/yy) MW-1 MADEP VPH C5-C8 AliphaticsC9-C12 AliphaticsC9-C10 AromaticsAnalytical Method 1,2,4-TrimethylbenzeneEthylbenzenen-ButylbenzeneContaminant of Concern →Methyl tert-Butyl Ethyl (MTBE)n-PropylbenzeneVOCs - SM 6200B Xylenes (Total)1,3,5-Trimethylbenzenesec-ButylbenzeneLeadIsopropylbenzeneBenzeneNaphthaleneToluenep-Isopropyltoluene11/23/2012 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 8/14/2014 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 2/10/2015 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 9/14/2017 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 12/11/2019 ----------------- 11/23/2012 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 8/14/2014 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 2/10/2015 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 9/14/2017 ----------------- 12/11/2019 ----------------- 11/23/2012 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 8/14/2014 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <2.0 <0.50 <0.50 <0.50 <0.50 <1.5 ---- 2/10/2015 ----------------- 9/14/2017 ----------------- 12/11/2019 ----------------- 1 70 70 600 70 NA 20 6 70 600 400 400 500 400 700 200 15 5000 6900 8500 84500 25000 NA 20000 6000 30000 260000 28500 25000 85500 NA NA NA 15000 Notes: All results presented in micrograms per liter (µg/L) < - denotes less than sample detection limit. ND - denotes not detected "-" denotes not analyzed. Grey shading denotes levels above the 2L standard. Concentrations reported with a "J" qualifier were estimated by the laboratory Yellow shading denotes levels above the GCL. * Groundwater analytical data from 11/23/2012 was extracted from the January 2013 Force Environmental Service Company, LLC report Table provided herein includes consituents with past or recent detections from full list reported as laboratory GCL (ug/L) 2L Standard (ug/L) WSW-5 WSW-6 WSW-7 Page 2 of 2 APPENDIX A LABORATORY ANALYTICAL RESULTS AND CHAIN-OF-CUSTODY FORMS SHEALY ENVIRONMENTAL SERVICES,INC. The electronic signature above is the equivalent of a handwritten signature. This report shall not be reproduced,except in its entirety,without the written approval of Shealy Environmental Services,Inc. Shealy Environmental Services,Inc. 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.shealylab.com Report of Analysis Terracon Consultants,Inc. 72 Point Circle Greenville,SC 29615 Attention:Montgomery Spillane Project Name:Buckners Grocery Project Number:86149630C Lot Number:UL13023 Date Completed:12/26/2019 12/26/2019 10:09 AM Approved and released by: Lab Director -Greenville:Lucas Odom Page 1 of 31 SHEALY ENVIRONMENTAL SERVICES,INC. SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639 Shealy Environmental Services,Inc. 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.shealylab.com Case Narrative Terracon Consultants,Inc. Lot Number:UL13023 This Report of Analysis contains the analytical result(s)for the sample(s)listed on the Sample Summary following this Case Narrative.The sample receiving date is documented in the header information associated with each sample. All results listed in this report relate only to the samples that are contained within this report. Sample receipt,sample analysis,and data review have been performed in accordance with the most current approved NELAC standards,the Shealy Environmental Services,Inc.("Shealy")Quality Assurance Management Plan (QAMP),standard operating procedures (SOPs),and Shealy policies.Any exceptions to the NELAC standards,the QAMP,SOPs or policies are qualified on the results page or discussed below. If you have any questions regarding this report please contact the Shealy Project Manager listed on the cover page. Page 2 of 31 SHEALY ENVIRONMENTAL SERVICES, INC. Sample Summary Terracon Consultants, Inc. Lot Number: UL13023 Sample Number Sample ID Matrix Date Sampled Date Received 001 12/11/2019 170241045-FB-1 Aqueous 12/12/2019 002 12/11/2019 175041045-MW-1 Aqueous 12/12/2019 003 12/11/2019 174041045-WSW-2 Aqueous 12/12/2019 004 12/11/2019 175741045-WSW-3 Aqueous 12/12/2019 (4 samples) 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 3 of 31 SHEALY ENVIRONMENTAL SERVICES, INC. Detection Summary Terracon Consultants, Inc. Lot Number: UL13023 Sample Sample ID Matrix Parameter Method Result Q Units Page 002 41045-MW-1 Aqueous Benzene SM 6200B-9.1 ug/L 7 002 41045-MW-1 Aqueous sec-Butylbenzene SM 6200B-2.9 ug/L 7 002 41045-MW-1 Aqueous Ethylbenzene SM 6200B-340 ug/L 7 002 41045-MW-1 Aqueous Isopropylbenzene SM 6200B-36 ug/L 7 002 41045-MW-1 Aqueous p-Isopropyltoluene (p-SM 6200B-2.1 ug/L 7 002 41045-MW-1 Aqueous Naphthalene SM 6200B-210 ug/L 8 002 41045-MW-1 Aqueous n-Propylbenzene SM 6200B-81 ug/L 8 002 41045-MW-1 Aqueous Toluene SM 6200B-0.91 ug/L 8 002 41045-MW-1 Aqueous 1,2,4-Trimethylbenzene SM 6200B-530 ug/L 8 002 41045-MW-1 Aqueous m+p - Xylenes SM 6200B-2.3 ug/L 8 002 41045-MW-1 Aqueous o - Xylenes SM 6200B-4.0 ug/L 8 002 41045-MW-1 Aqueous C5 - C8 Aliphatics MADEP-VPH-68 J ug/L 8 002 41045-MW-1 Aqueous C9 - C12 Aliphatics MADEP-VPH-1200 ug/L 8 002 41045-MW-1 Aqueous C9 - C10 Aromatics MADEP-VPH-1500 ug/L 9 (14 detections) 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 4 of 31 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Terracon Consultants, Inc. 41045-FB-1 UL13023-001 12/11/2019 1702 12/12/2019 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 12/18/2019 2338 STM 39502 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50 Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50 Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50 Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50 Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50 Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50 n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50 sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50 tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50 Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50 Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50 Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50 Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50 Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50 2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50 4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50 Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50 1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50 Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50 1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50 1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50 1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50 Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50 1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50 cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50 trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50 1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50 1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50 2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50 cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50 trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50 Diisopropyl ether (IPE)108-20-3 SM 6200B-ND 1ug/L0.400.50 Ethylbenzene 100-41-4 SM 6200B-ND 1ug/L0.400.50 Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50 Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50 p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50 Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-ND 1ug/L0.400.50 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 5 of 31 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Terracon Consultants, Inc. 41045-FB-1 UL13023-001 12/11/2019 1702 12/12/2019 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 12/18/2019 2338 STM 39502 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50 Naphthalene 91-20-3 SM 6200B-ND 1ug/L0.400.50 n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50 Styrene 100-42-5 SM 6200B-ND 1ug/L0.400.50 1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50 1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50 Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50 Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50 1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50 1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50 1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50 1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50 1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50 Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50 Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50 1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50 1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50 1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 1ug/L0.400.50 Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50 m+p - Xylenes 179601-23-1 SM 6200B-ND 1ug/L0.400.50 o - Xylenes 95-47-6 SM 6200B-ND 1ug/L0.400.50 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 94 70-130 Bromofluorobenzene 97 70-130 Toluene-d8 102 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 6 of 31 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Terracon Consultants, Inc. 41045-MW-1 UL13023-002 12/11/2019 1750 12/12/2019 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 12/19/2019 0133 STM 39502 2 SM 6200B-SM 6200B-2011 10 12/20/2019 0611 STM 39628 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Benzene 71-43-2 SM 6200B-9.1 1ug/L0.400.50 Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50 Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50 Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50 Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50 Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50 n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50 sec-Butylbenzene 135-98-8 SM 6200B-2.9 1ug/L0.400.50 tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50 Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50 Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50 Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50 Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50 Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50 2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50 4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50 Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50 1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50 Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50 1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50 1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50 1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50 Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50 1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50 cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50 trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50 1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50 1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50 2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50 cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50 trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50 Diisopropyl ether (IPE)108-20-3 SM 6200B-ND 1ug/L0.400.50 Ethylbenzene 100-41-4 SM 6200B-340 2ug/L4.05.0 Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50 Isopropylbenzene (Cumene)98-82-8 SM 6200B-36 1ug/L0.400.50 p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-2.1 1ug/L0.400.50 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 7 of 31 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Terracon Consultants, Inc. 41045-MW-1 UL13023-002 12/11/2019 1750 12/12/2019 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 12/19/2019 0133 STM 39502 2 SM 6200B-SM 6200B-2011 10 12/20/2019 0611 STM 39628 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-ND 1ug/L0.400.50 Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50 Naphthalene 91-20-3 SM 6200B-210 2ug/L4.05.0 n-Propylbenzene 103-65-1 SM 6200B-81 1ug/L0.400.50 Styrene 100-42-5 SM 6200B-ND 1ug/L0.400.50 1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50 1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50 Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50 Toluene 108-88-3 SM 6200B-0.91 1ug/L0.400.50 1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50 1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50 1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50 1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50 1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50 Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50 Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50 1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50 1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50 1,2,4-Trimethylbenzene 95-63-6 SM 6200B-530 2ug/L4.05.0 Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50 m+p - Xylenes 179601-23-1 SM 6200B-2.3 1ug/L0.400.50 o - Xylenes 95-47-6 SM 6200B-4.0 1ug/L0.400.50 AcceptanceAcceptanceRun 2Run 1 Surrogate Q % Recovery Limits % Recovery LimitsQ 1,2-Dichloroethane-d4 98 70-130 97 70-130 Bromofluorobenzene 105 70-130 99 70-130 Toluene-d8 102 70-130 103 70-130 MADEP VPH (aliphatics) Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 VPH MADEP-VPH-18-2.1 1 12/17/2019 1454 JJG 39290 2 VPH MADEP-VPH-18-2.1 10 12/22/2019 1742 JJG 39813 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL C5 - C8 Aliphatics MADEP-VPH-68 J 1ug/L1575 C9 - C12 Aliphatics MADEP-VPH-1200 2ug/L150750 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 8 of 31 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Terracon Consultants, Inc. 41045-MW-1 UL13023-002 12/11/2019 1750 12/12/2019 Aqueous AcceptanceAcceptanceRun 2Run 1 Surrogate Q % Recovery Limits % Recovery LimitsQ 2,5-Dibromotoluene (FID)95 70-130 106 70-130 MADEP VPH (aromatics) Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 2 VPH MADEP-VPH-18-2.1 10 12/22/2019 1742 JJG 39812 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL C9 - C10 Aromatics MADEP-VPH-1500 2ug/L50250 AcceptanceRun 2 Surrogate Q % Recovery Limits 2,5-Dibromotoluene (PID)102 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 9 of 31 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Terracon Consultants, Inc. 41045-WSW-2 UL13023-003 12/11/2019 1740 12/12/2019 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 12/19/2019 0156 STM 39502 2 SM 6200B-SM 6200B-2011 1 12/20/2019 0308 STM 39628 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50 Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50 Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50 Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50 Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50 Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50 n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50 sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50 tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50 Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50 Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50 Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50 Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50 Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50 2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50 4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50 Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50 1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50 Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50 1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50 1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50 1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50 Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50 1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50 cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50 trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50 1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50 1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50 2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50 cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50 trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50 Diisopropyl ether (IPE)108-20-3 SM 6200B-ND 1ug/L0.400.50 Ethylbenzene 100-41-4 SM 6200B-ND 2ug/L0.400.50 Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50 Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50 p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 10 of 31 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Terracon Consultants, Inc. 41045-WSW-2 UL13023-003 12/11/2019 1740 12/12/2019 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 12/19/2019 0156 STM 39502 2 SM 6200B-SM 6200B-2011 1 12/20/2019 0308 STM 39628 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-ND 1ug/L0.400.50 Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50 Naphthalene 91-20-3 SM 6200B-ND 2ug/L0.400.50 n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50 Styrene 100-42-5 SM 6200B-ND 1ug/L0.400.50 1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50 1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50 Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50 Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50 1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50 1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50 1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50 1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50 1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50 Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50 Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50 1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50 1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50 1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 2ug/L0.400.50 Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50 m+p - Xylenes 179601-23-1 SM 6200B-ND 1ug/L0.400.50 o - Xylenes 95-47-6 SM 6200B-ND 1ug/L0.400.50 AcceptanceAcceptanceRun 2Run 1 Surrogate Q % Recovery Limits % Recovery LimitsQ 1,2-Dichloroethane-d4 99 70-130 102 70-130 Bromofluorobenzene 100 70-130 101 70-130 Toluene-d8 103 70-130 103 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 11 of 31 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Terracon Consultants, Inc. 41045-WSW-3 UL13023-004 12/11/2019 1757 12/12/2019 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 12/19/2019 0220 STM 39502 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Benzene 71-43-2 SM 6200B-ND 1ug/L0.400.50 Bromobenzene 108-86-1 SM 6200B-ND 1ug/L0.400.50 Bromochloromethane 74-97-5 SM 6200B-ND 1ug/L0.400.50 Bromodichloromethane 75-27-4 SM 6200B-ND 1ug/L0.400.50 Bromoform 75-25-2 SM 6200B-ND 1ug/L0.400.50 Bromomethane (Methyl bromide)74-83-9 SM 6200B-ND 1ug/L0.400.50 n-Butylbenzene 104-51-8 SM 6200B-ND 1ug/L0.400.50 sec-Butylbenzene 135-98-8 SM 6200B-ND 1ug/L0.400.50 tert-Butylbenzene 98-06-6 SM 6200B-ND 1ug/L0.400.50 Carbon tetrachloride 56-23-5 SM 6200B-ND 1ug/L0.400.50 Chlorobenzene 108-90-7 SM 6200B-ND 1ug/L0.400.50 Chloroethane 75-00-3 SM 6200B-ND 1ug/L0.400.50 Chloroform 67-66-3 SM 6200B-ND 1ug/L0.400.50 Chloromethane (Methyl chloride)74-87-3 SM 6200B-ND 1ug/L0.400.50 2-Chlorotoluene 95-49-8 SM 6200B-ND 1ug/L0.400.50 4-Chlorotoluene 106-43-4 SM 6200B-ND 1ug/L0.400.50 Dibromochloromethane 124-48-1 SM 6200B-ND 1ug/L0.400.50 1,2-Dibromoethane (EDB)106-93-4 SM 6200B-ND 1ug/L0.400.50 Dibromomethane (Methylene bromide)74-95-3 SM 6200B-ND 1ug/L0.400.50 1,2-Dichlorobenzene 95-50-1 SM 6200B-ND 1ug/L0.400.50 1,3-Dichlorobenzene 541-73-1 SM 6200B-ND 1ug/L0.400.50 1,4-Dichlorobenzene 106-46-7 SM 6200B-ND 1ug/L0.400.50 Dichlorodifluoromethane 75-71-8 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloroethane 75-34-3 SM 6200B-ND 1ug/L0.400.50 1,2-Dichloroethane 107-06-2 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloroethene 75-35-4 SM 6200B-ND 1ug/L0.400.50 cis-1,2-Dichloroethene 156-59-2 SM 6200B-ND 1ug/L0.400.50 trans-1,2-Dichloroethene 156-60-5 SM 6200B-ND 1ug/L0.400.50 1,2-Dichloropropane 78-87-5 SM 6200B-ND 1ug/L0.400.50 1,3-Dichloropropane 142-28-9 SM 6200B-ND 1ug/L0.400.50 2,2-Dichloropropane 594-20-7 SM 6200B-ND 1ug/L0.400.50 1,1-Dichloropropene 563-58-6 SM 6200B-ND 1ug/L0.400.50 cis-1,3-Dichloropropene 10061-01-5 SM 6200B-ND 1ug/L0.400.50 trans-1,3-Dichloropropene 10061-02-6 SM 6200B-ND 1ug/L0.400.50 Diisopropyl ether (IPE)108-20-3 SM 6200B-ND 1ug/L0.400.50 Ethylbenzene 100-41-4 SM 6200B-ND 1ug/L0.400.50 Hexachlorobutadiene 87-68-3 SM 6200B-ND 1ug/L0.400.50 Isopropylbenzene (Cumene)98-82-8 SM 6200B-ND 1ug/L0.400.50 p-Isopropyltoluene (p-Cymene)99-87-6 SM 6200B-ND 1ug/L0.400.50 Methyl tertiary butyl ether (MTBE)1634-04-4 SM 6200B-ND 1ug/L0.400.50 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 12 of 31 Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Terracon Consultants, Inc. 41045-WSW-3 UL13023-004 12/11/2019 1757 12/12/2019 Aqueous Volatile Organic Compounds by GC/MS Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 SM 6200B-SM 6200B-2011 1 12/19/2019 0220 STM 39502 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Methylene chloride 75-09-2 SM 6200B-ND 1ug/L0.400.50 Naphthalene 91-20-3 SM 6200B-ND 1ug/L0.400.50 n-Propylbenzene 103-65-1 SM 6200B-ND 1ug/L0.400.50 Styrene 100-42-5 SM 6200B-ND 1ug/L0.400.50 1,1,1,2-Tetrachloroethane 630-20-6 SM 6200B-ND 1ug/L0.400.50 1,1,2,2-Tetrachloroethane 79-34-5 SM 6200B-ND 1ug/L0.400.50 Tetrachloroethene 127-18-4 SM 6200B-ND 1ug/L0.400.50 Toluene 108-88-3 SM 6200B-ND 1ug/L0.400.50 1,1,2-Trichloro-1,2,2-Trifluoroethane 76-13-1 SM 6200B-ND 1ug/L0.400.50 1,2,3-Trichlorobenzene 87-61-6 SM 6200B-ND 1ug/L0.400.50 1,2,4-Trichlorobenzene 120-82-1 SM 6200B-ND 1ug/L0.400.50 1,1,1-Trichloroethane 71-55-6 SM 6200B-ND 1ug/L0.400.50 1,1,2-Trichloroethane 79-00-5 SM 6200B-ND 1ug/L0.400.50 Trichloroethene 79-01-6 SM 6200B-ND 1ug/L0.400.50 Trichlorofluoromethane 75-69-4 SM 6200B-ND 1ug/L0.400.50 1,2,3-Trichloropropane 96-18-4 SM 6200B-ND 1ug/L0.400.50 1,3,5-Trimethylbenzene (Mesitylene)108-67-8 SM 6200B-ND 1ug/L0.400.50 1,2,4-Trimethylbenzene 95-63-6 SM 6200B-ND 1ug/L0.400.50 Vinyl chloride 75-01-4 SM 6200B-ND 1ug/L0.400.50 m+p - Xylenes 179601-23-1 SM 6200B-ND 1ug/L0.400.50 o - Xylenes 95-47-6 SM 6200B-ND 1ug/L0.400.50 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 96 70-130 Bromofluorobenzene 100 70-130 Toluene-d8 103 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 13 of 31 QC Summary 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 14 of 31 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:UQ39502-001 39502 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Benzene ND 12/18/2019 22530.50 0.40 ug/L1 Bromobenzene ND 12/18/2019 22530.50 0.40 ug/L1 Bromochloromethane ND 12/18/2019 22530.50 0.40 ug/L1 Bromodichloromethane ND 12/18/2019 22530.50 0.40 ug/L1 Bromoform ND 12/18/2019 22530.50 0.40 ug/L1 Bromomethane (Methyl bromide)ND 12/18/2019 22530.50 0.40 ug/L1 n-Butylbenzene ND 12/18/2019 22530.50 0.40 ug/L1 sec-Butylbenzene ND 12/18/2019 22530.50 0.40 ug/L1 tert-Butylbenzene ND 12/18/2019 22530.50 0.40 ug/L1 Carbon tetrachloride ND 12/18/2019 22530.50 0.40 ug/L1 Chlorobenzene ND 12/18/2019 22530.50 0.40 ug/L1 Chloroethane ND 12/18/2019 22530.50 0.40 ug/L1 Chloroform ND 12/18/2019 22530.50 0.40 ug/L1 Chloromethane (Methyl chloride)ND 12/18/2019 22530.50 0.40 ug/L1 2-Chlorotoluene ND 12/18/2019 22530.50 0.40 ug/L1 4-Chlorotoluene ND 12/18/2019 22530.50 0.40 ug/L1 Dibromochloromethane ND 12/18/2019 22530.50 0.40 ug/L1 1,2-Dibromoethane (EDB)ND 12/18/2019 22530.50 0.40 ug/L1 Dibromomethane (Methylene bromide)ND 12/18/2019 22530.50 0.40 ug/L1 1,2-Dichlorobenzene ND 12/18/2019 22530.50 0.40 ug/L1 1,3-Dichlorobenzene ND 12/18/2019 22530.50 0.40 ug/L1 1,4-Dichlorobenzene ND 12/18/2019 22530.50 0.40 ug/L1 Dichlorodifluoromethane ND 12/18/2019 22530.50 0.40 ug/L1 1,1-Dichloroethane ND 12/18/2019 22530.50 0.40 ug/L1 1,2-Dichloroethane ND 12/18/2019 22530.50 0.40 ug/L1 1,1-Dichloroethene ND 12/18/2019 22530.50 0.40 ug/L1 cis-1,2-Dichloroethene ND 12/18/2019 22530.50 0.40 ug/L1 trans-1,2-Dichloroethene ND 12/18/2019 22530.50 0.40 ug/L1 1,2-Dichloropropane ND 12/18/2019 22530.50 0.40 ug/L1 1,3-Dichloropropane ND 12/18/2019 22530.50 0.40 ug/L1 2,2-Dichloropropane ND 12/18/2019 22530.50 0.40 ug/L1 1,1-Dichloropropene ND 12/18/2019 22530.50 0.40 ug/L1 cis-1,3-Dichloropropene ND 12/18/2019 22530.50 0.40 ug/L1 trans-1,3-Dichloropropene ND 12/18/2019 22530.50 0.40 ug/L1 Diisopropyl ether (IPE)ND 12/18/2019 22530.50 0.40 ug/L1 Ethylbenzene ND 12/18/2019 22530.50 0.40 ug/L1 Hexachlorobutadiene ND 12/18/2019 22530.50 0.40 ug/L1 Isopropylbenzene (Cumene)ND 12/18/2019 22530.50 0.40 ug/L1 p-Isopropyltoluene (p-Cymene)ND 12/18/2019 22530.50 0.40 ug/L1 Methyl tertiary butyl ether (MTBE)ND 12/18/2019 22530.50 0.40 ug/L1 Methylene chloride ND 12/18/2019 22530.50 0.40 ug/L1 Naphthalene ND 12/18/2019 22530.50 0.40 ug/L1 n-Propylbenzene ND 12/18/2019 22530.50 0.40 ug/L1 Styrene ND 12/18/2019 22530.50 0.40 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 15 of 31 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:UQ39502-001 39502 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil 1,1,1,2-Tetrachloroethane ND 12/18/2019 22530.50 0.40 ug/L1 1,1,2,2-Tetrachloroethane ND 12/18/2019 22530.50 0.40 ug/L1 Tetrachloroethene ND 12/18/2019 22530.50 0.40 ug/L1 Toluene ND 12/18/2019 22530.50 0.40 ug/L1 1,1,2-Trichloro-1,2,2-Trifluoroethane ND 12/18/2019 22530.50 0.40 ug/L1 1,2,3-Trichlorobenzene ND 12/18/2019 22530.50 0.40 ug/L1 1,2,4-Trichlorobenzene ND 12/18/2019 22530.50 0.40 ug/L1 1,1,1-Trichloroethane ND 12/18/2019 22530.50 0.40 ug/L1 1,1,2-Trichloroethane ND 12/18/2019 22530.50 0.40 ug/L1 Trichloroethene ND 12/18/2019 22530.50 0.40 ug/L1 Trichlorofluoromethane ND 12/18/2019 22530.50 0.40 ug/L1 1,2,3-Trichloropropane ND 12/18/2019 22530.50 0.40 ug/L1 1,3,5-Trimethylbenzene (Mesitylene)ND 12/18/2019 22530.50 0.40 ug/L1 1,2,4-Trimethylbenzene ND 12/18/2019 22530.50 0.40 ug/L1 Vinyl chloride ND 12/18/2019 22530.50 0.40 ug/L1 m+p - Xylenes ND 12/18/2019 22530.50 0.40 ug/L1 o - Xylenes ND 12/18/2019 22530.50 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 97 70-130 Bromofluorobenzene 102 70-130 Toluene-d8 100 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 16 of 31 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:UQ39502-002 39502 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date % Rec LimitDil(ug/L)(ug/L) Benzene 50 12/18/2019 20481005070-1301 Bromobenzene 51 12/18/2019 20481035070-1301 Bromochloromethane 50 12/18/2019 2048995070-1301 Bromodichloromethane 51 12/18/2019 20481035070-1301 Bromoform 55 12/18/2019 20481095070-1301 Bromomethane (Methyl bromide)52 12/18/2019 20481045060-1401 n-Butylbenzene 54 12/18/2019 20481085070-1301 sec-Butylbenzene 52 12/18/2019 20481055070-1301 tert-Butylbenzene 53 12/18/2019 20481055070-1301 Carbon tetrachloride 54 12/18/2019 20481085070-1301 Chlorobenzene 50 12/18/2019 20481005070-1301 Chloroethane 47 12/18/2019 2048955042-1631 Chloroform 51 12/18/2019 20481035070-1301 Chloromethane (Methyl chloride)49 12/18/2019 2048975020-1581 2-Chlorotoluene 51 12/18/2019 20481025070-1301 4-Chlorotoluene 50 12/18/2019 20481015070-1301 Dibromochloromethane 54 12/18/2019 20481075070-1301 1,2-Dibromoethane (EDB)50 12/18/2019 20481005070-1301 Dibromomethane (Methylene bromide)49 12/18/2019 2048975070-1301 1,2-Dichlorobenzene 51 12/18/2019 20481025070-1301 1,3-Dichlorobenzene 51 12/18/2019 20481025070-1301 1,4-Dichlorobenzene 49 12/18/2019 2048975070-1301 Dichlorodifluoromethane 50 12/18/2019 20481015060-1401 1,1-Dichloroethane 50 12/18/2019 20481005070-1301 1,2-Dichloroethane 50 12/18/2019 20481005070-1301 1,1-Dichloroethene 51 12/18/2019 20481025070-1301 cis-1,2-Dichloroethene 51 12/18/2019 20481035070-1301 trans-1,2-Dichloroethene 51 12/18/2019 20481025070-1301 1,2-Dichloropropane 49 12/18/2019 2048995070-1301 1,3-Dichloropropane 49 12/18/2019 2048985070-1301 2,2-Dichloropropane 53 12/18/2019 20481055070-1301 1,1-Dichloropropene 51 12/18/2019 20481025070-1301 cis-1,3-Dichloropropene 53 12/18/2019 20481055070-1301 trans-1,3-Dichloropropene 52 12/18/2019 20481045070-1301 Diisopropyl ether (IPE)50 12/18/2019 20481005070-1301 Ethylbenzene 51 12/18/2019 20481015070-1301 Hexachlorobutadiene 50 12/18/2019 20481015070-1301 Isopropylbenzene (Cumene)53 12/18/2019 20481055070-1301 p-Isopropyltoluene (p-Cymene)52 12/18/2019 20481055070-1301 Methyl tertiary butyl ether (MTBE)50 12/18/2019 20481015070-1301 Methylene chloride 50 12/18/2019 20481005070-1301 Naphthalene 53 12/18/2019 20481065050-1401 n-Propylbenzene 53 12/18/2019 20481065070-1301 Styrene 53 12/18/2019 20481065070-1301 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 17 of 31 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:UQ39502-002 39502 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date % Rec LimitDil(ug/L)(ug/L) 1,1,1,2-Tetrachloroethane 52 12/18/2019 20481045070-1301 1,1,2,2-Tetrachloroethane 51 12/18/2019 20481025070-1301 Tetrachloroethene 50 12/18/2019 2048995070-1301 Toluene 49 12/18/2019 2048985070-1301 1,1,2-Trichloro-1,2,2-Trifluoroethane 52 12/18/2019 20481035070-1301 1,2,3-Trichlorobenzene 52 12/18/2019 20481035070-1301 1,2,4-Trichlorobenzene 51 12/18/2019 20481025070-1301 1,1,1-Trichloroethane 51 12/18/2019 20481025070-1301 1,1,2-Trichloroethane 49 12/18/2019 2048975070-1301 Trichloroethene 49 12/18/2019 2048995070-1301 Trichlorofluoromethane 47 12/18/2019 2048945060-1401 1,2,3-Trichloropropane 49 12/18/2019 2048985070-1301 1,3,5-Trimethylbenzene (Mesitylene)53 12/18/2019 20481055070-1301 1,2,4-Trimethylbenzene 53 12/18/2019 20481065070-1301 Vinyl chloride 48 12/18/2019 2048965060-1401 m+p - Xylenes 50 12/18/2019 20481005070-1301 o - Xylenes 50 12/18/2019 20481015070-1301 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 93 70-130 Bromofluorobenzene 102 70-130 Toluene-d8 98 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 18 of 31 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:UQ39628-001 39628 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Ethylbenzene ND 12/19/2019 22560.50 0.40 ug/L1 Naphthalene ND 12/19/2019 22560.50 0.40 ug/L1 1,2,4-Trimethylbenzene ND 12/19/2019 22560.50 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 102 70-130 Bromofluorobenzene 103 70-130 Toluene-d8 102 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 19 of 31 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:UQ39628-002 39628 SM 6200B-2011 Analytical Method:SM 6200B-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date % Rec LimitDil(ug/L)(ug/L) Ethylbenzene 51 12/19/2019 20561015070-1301 Naphthalene 47 12/19/2019 2056955050-1401 1,2,4-Trimethylbenzene 52 12/19/2019 20561045070-1301 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 93 70-130 Bromofluorobenzene 105 70-130 Toluene-d8 97 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 20 of 31 MADEP VPH (aliphatics) - MB Batch:Prep Method: Sample ID:UQ39290-001 39290 VPH Analytical Method:MADEP-VPH-18-2.1 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil C5 - C8 Aliphatics ND 12/17/2019 11157515ug/L1 Surrogate Q % Rec Acceptance Limit 2,5-Dibromotoluene (FID)98 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 21 of 31 MADEP VPH (aliphatics) - LCS Batch:Prep Method: Sample ID:UQ39290-002 39290 VPH Analytical Method:MADEP-VPH-18-2.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date % Rec LimitDil(ug/L)(ug/L) C5 - C8 Aliphatics 140 12/17/2019 10469415070-1301 Surrogate Q % Rec Acceptance Limit 2,5-Dibromotoluene (FID)101 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 22 of 31 MADEP VPH (aromatics) - MB Batch:Prep Method: Sample ID:UQ39812-001 39812 VPH Analytical Method:MADEP-VPH-18-2.1 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil C9 - C10 Aromatics ND 12/22/2019 1325255.0 ug/L1 Surrogate Q % Rec Acceptance Limit 2,5-Dibromotoluene (PID)109 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 23 of 31 MADEP VPH (aromatics) - LCS Batch:Prep Method: Sample ID:UQ39812-002 39812 VPH Analytical Method:MADEP-VPH-18-2.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date % Rec LimitDil(ug/L)(ug/L) C9 - C10 Aromatics 24 12/22/2019 1229962570-1301 Surrogate Q % Rec Acceptance Limit 2,5-Dibromotoluene (PID)102 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 24 of 31 MADEP VPH (aromatics) - LCSD Batch:Prep Method: Sample ID:UQ39812-003 39812 VPH Analytical Method:MADEP-VPH-18-2.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD % Rec Limit % RPD LimitDil(ug/L)(ug/L) C9 - C10 Aromatics 25 12/22/2019 12571002570-1304.1 251 Surrogate Q % Rec Acceptance Limit 2,5-Dibromotoluene (PID)106 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 25 of 31 MADEP VPH (aliphatics) - MB Batch:Prep Method: Sample ID:UQ39813-001 39813 VPH Analytical Method:MADEP-VPH-18-2.1 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil C9 - C12 Aliphatics ND 12/22/2019 13257515ug/L1 Surrogate Q % Rec Acceptance Limit 2,5-Dibromotoluene (FID)115 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 26 of 31 MADEP VPH (aliphatics) - LCS Batch:Prep Method: Sample ID:UQ39813-002 39813 VPH Analytical Method:MADEP-VPH-18-2.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date % Rec LimitDil(ug/L)(ug/L) C9 - C12 Aliphatics 170 12/22/2019 12299418070-1301 Surrogate Q % Rec Acceptance Limit 2,5-Dibromotoluene (FID)108 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 27 of 31 MADEP VPH (aliphatics) - LCSD Batch:Prep Method: Sample ID:UQ39813-003 39813 VPH Analytical Method:MADEP-VPH-18-2.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD % Rec Limit % RPD LimitDil(ug/L)(ug/L) C9 - C12 Aliphatics 170 12/22/2019 12579718070-1303.0 251 Surrogate Q % Rec Acceptance Limit 2,5-Dibromotoluene (FID)116 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteriaP = The RPD between two GC columns exceeds 40% + = RPD is out of criteria_DL = Detection Limit LOD = Limit of Detection 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 28 of 31 Chain of Custody and Miscellaneous Documents 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 29 of 31 SHEALY ENVIRONMENTAL SERVICES, INC. 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 30 of 31 SHEALY ENVIRONMENTAL SERVICES, INC. 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.shealylab.com Shealy Environmental Services, Inc. Page 31 of 31 APPENDIX B PHOTOGRAPHS Former Buckner Grocery (Incident # 41045) 2 North Fork Road, Barnardsville, NC Terracon Project No. 86149630C Sampling Date: December 11, 2019 Photo #1 View looking northwest towards the front of the former Buckner Grocery building Photo #2 View of on-site monitoring well MW-1 Photo #3 View of four empty on-site ASTs Photo #4 View looking north towards on-site supply well WSW-1 Photo #5 View looking west towards supply well WSW-2 on the adjacent property Photo #6 View of out-of-service supply well WSW-3 APPENDIX C FIELD NOTES