Loading...
HomeMy WebLinkAbout25046 Harrelson Ford_Brownfields Assessment Work Plan 20220207 Via Email February 7, 2022 NCDEQ – Division of Waste Management Brownfields Program 1646 Mail Service Center Raleigh, NC 27699-1646 Attn: Mr. Bill Schmithorst Re: Brownfields Assessment Work Plan Harrelson Ford Charlotte, North Carolina Brownfields Project No. 25046-21-060 H&H Project No. ACO-002 Dear Bill: On behalf of TAC Harrelson Ford, LLC, please find the enclosed Brownfields Assessment Work Plan prepared for the Harrelson Ford Brownfields property for your review and approval. Should you have any questions or need additional information, please do not hesitate to contact us at (704) 586-0007. Sincerely, Hart & Hickman, PC Haley Martin, PG Ralph McGee, PG Senior Project Geologist Project Manager Enclosure cc: Mr. Tyson Reilly, Ardent (Via Email) Mr. Sam Lumpkin, McGuireWoods LLP (Via Email) i https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc Brownfields Assessment Work Plan Harrelson Ford 6500 South Boulevard Charlotte, North Carolina H&H Job No. ACO-002 Table of Contents 1.0 Introduction .............................................................................................................................1  1.1 Previous Assessment Activities .............................................................................................2  1.2 Brownfields Activities ...........................................................................................................5  2.0 Additional Brownfields Assessment Activities .....................................................................7  2.1 Soil Sampling Activities ........................................................................................................7  2.2 Sub-Slab and Exterior Soil Gas Sampling Activities ............................................................8  2.3 Quality Assurance – Quality Control ..................................................................................11  2.4 Investigation Derived Waste (IDW) Management ..............................................................12  2.5 Reporting .............................................................................................................................12  List of Tables Table 1 Proposed Sample Summary Table List of Figures Figure 1 Site Location Map Figure 2 Site Map Figure 3 Proposed Sample Location Map 1 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc Brownfields Assessment Work Plan Harrelson Ford 6500 South Boulevard Charlotte, North Carolina H&H Job No. ACO-002 1.0 Introduction On behalf of TAC Harrelson Ford, LLC, Hart & Hickman, PC (H&H) is providing this Brownfields Assessment Work Plan (Work Plan) for the Harrelson Ford property located at 6500 South Boulevard in Charlotte, Mecklenburg County, North Carolina (Site). A Site location map is provided as Figure 1, and the Site and surrounding area are shown in Figure 2. The Site consists of one parcel (Mecklenburg Parcel ID No. 17304204) that totals approximately 10.6 acres of land located in a mixed light industrial, commercial, and residential use area approximately five miles south of uptown Charlotte. The northern portion of the Site is developed with an unoccupied approximate 2,000 square foot (sq ft) warehouse (Building 1), an approximate 9,300 sq ft service garage (Building 2), an unoccupied approximate 20,000 square foot (sq ft) vehicle showroom and service garage (Building 3), and one unoccupied approximate 14,000 sq ft service garage (Building 4). Remaining portions of the Site consist of paved access drives, parking areas, and equipment material staging areas. The Site buildings are shown in Figure 2. Proposed redevelopment of the Brownfields property includes razing the existing Site buildings and leveling the Site for construction of approximately 175 townhome buildings. This Work Plan has been prepared to complete additional assessment activities to further evaluate risks associated with redevelopment of the Site. A summary of background information and previous assessment activities conducted is provided below. 2 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc 1.1 Previous Assessment Activities March 2021 Phase I ESA In March 2021, H&H completed Phase I ESA activities and identified the following environmental concerns in connection with historical operations at the Site:  The Site has been utilized for automotive repair and maintenance operations since the early 1970s. Automotive repair operations likely used petroleum products and/or chlorinated solvents. The Site is also listed in the environmental databases as generator of hazardous wastes as early as 1989. There are no release incidents reported in the environmental databases associated with hazardous wastes or historical automotive repair and maintenance operations at the Site. However, H&H observed significant oil staining, degraded surfaces, unlabeled 55-gallon drums and 275-gallon plastic totes of unknown fluids, a wash bay with associated floor drains, and open waste oil pans/containers in multiple areas in and around the Site buildings during the Site reconnaissance. Based on the reported use of hazardous materials and observations at the time of Site reconnaissance activities, the potential for impact from an undocumented release or releases associated with over 40 years of on-Site auto repair operations is considered an environmental concern.  During the Site reconnaissance, H&H observed evidence of four (4) potential underground storage tanks (USTs) within and adjacent to Building 3 (i.e., fill ports and/or vent piping). Aside from the UST removed in 1993 (discussed below), no other USTs are listed for the Site in the environmental databases. The potential for impact from an undocumented release associated with the potential USTs and the potential for additional unidentified USTs is an environmental concern.  H&H observed approximately twenty out-of-use in-ground hydraulic lifts in the service garage of Building 3 and one out-of-use in-ground hydraulic lift in the service garage of Building 2. Details about the in-ground lifts (i.e., installation dates, service records, closure records, etc.) were not available at the time of the Phase I ESA. Based on the lack of reports documenting lift system closure, the potential for impact to the Site from an 3 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc undocumented release from the hydraulic lift systems represents an environmental concern.  A trench drain and oil-water separator system was installed during construction of the southern Site building (Building 4) in the mid- to late-1990s. At the time of Site reconnaissance activities, standing fluids were observed within the trench drains located in the maintenance area of the Site building. Based on the age of the trench drain and oil/water separator (OWS) system and the observed conditions of the trench drain within the building, the potential for impacts to the Site associated with a release from the trench drain and OWS system is considered an environmental concern. A Historical Recognized Environmental Condition (HREC) is generally defined as an environmental concern which involves a past release of hazardous substances or petroleum products that has been addressed to the satisfaction of the applicable regulatory authority and that is not subject to activity and/or use limitations. H&H identified the following HREC in connection with the Site:  Based upon review of available environmental reports, one 3,000-gallon motor oil UST was removed from the Site in February 1993. After removal of the UST, three soil samples were collected for laboratory analysis from the base of the UST basin. Two soil samples were submitted for laboratory analysis of oil and grease by EPA Method 9071 and halogenated solvents by EPA Method 8021 and one soil sample was submitted for metals by toxicity characteristic leachate procedure (TCLP). Soil sample laboratory analytical results indicated that oil and grease (up to 630 milligrams per kilogram {mg/kg}) was detected at concentrations above the North Carolina Department of Environmental Quality (DEQ) UST Section Action Level at the time of 250 mg/kg (Incident No. 13888). Halogenated solvents and metals were not detected in the soil samples at concentrations above the regulatory screening criteria. 4 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc A Site Sensitivity Evaluation (SSE) was completed for the Site to evaluate potential risks associated with residual oil and grease concentrations in soil in the area of the former UST. Results of the SSE indicated that no water supply wells were identified within a 1,500 ft radius of the release incident. Based on results of the SSE, the DEQ UST Section issued a No Further Action (NFA) letter on August 6, 1996. Based on the closed regulatory status of the incident without implementation of land or activity use restrictions, the release associated with the former 3,000-gallon motor oil UST represents a HREC in connection with the Site. 2021 Phase II ESA In August 2021, H&H performed Phase II ESA activities at the Site. Assessment activities included the advancement of eight (8) soil borings near areas of concern (i.e., drains, former and suspect USTs, and an OWS), three (3) background soil borings, and twenty-four (24) soil borings adjacent to former in-ground hydraulic lifts for a total of thirty-four (34) soil samples selected for laboratory analysis. Assessment activities also included groundwater sample collection from five (5) temporary monitoring wells. Additionally, fifteen (15) soil gas samples were collected within the footprint of proposed townhome buildings. Soil, groundwater, and soil gas sample locations from the 2021 Phase II ESA are depicted in Figure 2. Results of the soil assessment activities completed in the vicinity of the former in-ground hydraulic lifts identified total petroleum hydrocarbons as diesel range organics (TPH-DRO) concentrations above the DEQ UST Section Action Level at six of the twenty-four lift systems. Hexavalent chromium was detected in samples collected near the former in-ground hydraulic lifts, trench drains associated with the OWS system, and former wash bay floor drain above the DEQ Inactive Hazardous Sites Branch (IHSB) Residential Preliminary Soil Remediation Goals (PSRGs) and background concentrations. No other compounds were detected at concentrations above the DEQ screening criteria in soil samples collected at the Site. Results of groundwater assessment activities completed in upgradient and downgradient portions of the Site and in areas of environmental concern did not identify compounds at concentrations above 2L Groundwater Quality Standards or the DEQ Division of Waste Management (DWM) 5 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc Vapor Intrusion Groundwater Screening Levels (GWSLs). Results of soil gas assessment activities completed within the footprint of the proposed townhome buildings identified several compounds at concentrations above the DEQ DWM Residential and/or Non-Residential Vapor Intrusion Soil Gas Screening Levels (SGSLs). The compounds ethylbenzene was detected in sample SG-7, installed adjacent to Building 3 (Figure 3), at a concentration above the DWM Non-Residential Vapor Intrusion SGSL of 490 µg/m3. Laboratory analytical results for sample SG-7 also detected concentrations of 1,2,4- trimethylbenzene, 1,3,5-trimethybenzene, m&p-xylene, o-xylene, n-heptane, n-hexane, and tetrachloroethene (PCE) exceeding the DWM Residential Vapor Intrusion SGSLs. Risk calculator results using compound concentrations detected in the soil gas samples indicate that the worst-case calculated cumulative lifetime incremental carcinogenic risk (LICR) and hazard index (HI) values exceed the DEQ and EPA acceptable thresholds of 1 x 10-4 and 1.0, respectively. 1.2 Brownfields Activities To address potential environmental concerns associated with historical on-Site and off-Site operations, the Site was entered into the DEQ Brownfields Program and received eligibility in a letter dated October 29, 2021. The PD elected to participate in the Brownfields Program Redevelopment Now option. As part of this process, a kick-off/data gap meeting with PD, environmental counsel for the PD, DEQ Brownfields personnel, and H&H was held on January 13, 2022 to discuss prior Site history, proposed redevelopment plans, previous sampling data, and the proposed schedule for completing the Brownfields Agreement. The purpose of the Brownfields assessment activities described herein are proposed to address DEQ Brownfields Program requests provided in an email dated January 24, 2022 for collection of sub-slab and exterior soil gas samples to further evaluate the potential for structural vapor intrusion. Additional assessment activities also include the collection of one soil sample to further assess the potential risks to Site workers and future Site occupants and to address DEQ Brownfields Program request to evaluate the potential for impacts in the area of a previously 6 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc collected soil gas sample. A summary of the proposed Brownfields assessment activities is provided below. 7 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc 2.0 Additional Brownfields Assessment Activities The proposed assessment activities will be performed in general accordance with the DEQ Inactive Hazardous Sites Branch (IHSB) Guidelines for Assessment and Cleanup of Contaminated Sites (Guidelines) dated July 2021, the DEQ Division of Waste Management (DWM) Vapor Intrusion Guidance (VI Guidance) dated March 2018, and most recent versions of the U.S. Environmental Protection Agency (EPA) Region IV Laboratory Services and Applied Science Division (LSASD) Field Branches Quality System and Technical Procedures guidance. Prior to conducting the proposed assessment field activities, H&H will contact North Carolina 811, the public utility locator, to mark subsurface utilities located on the Site. H&H will also contract with a private utility locator to screen proposed sample locations for subgrade utilities that may not be marked by the public locator. Additionally, boring locations will be hand cleared to approximately 5 ft bgs prior to use of mechanical drilling equipment to further screen the boring locations for the presence of subsurface utilities. 2.1 Soil Sampling Activities H&H will conduct soil sampling as part of the Brownfields assessment activities. The purpose of the soil sampling is to address DEQ Brownfields Program request to evaluate the potential for impacts in the vicinity of Phase II ESA soil gas sample SG-7, collected along the northern exterior wall of Building 3. The location of the proposed soil boring is shown in Figure 3. A tabular summary of proposed soil sample depths, objectives, and laboratory analyses are summarized in Table 1. H&H will team with a qualified drilling contractor to advance soil borings at the Site. During boring advancement, soil will be logged for lithological description and field screened for indication of potential impacts by observation for obvious staining, unusual odors, and the presence of volatile organic vapors using a calibrated photoionization detector (PID). One soil boring (SB-9) will be advanced to approximately 10 ft bgs in the vicinity of the soil gas sample SG-7 located north of Building 3. Based upon field observations, one soil sample will be 8 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc collected for laboratory analysis from the depth interval with the highest potential for impacts. If no obvious impacts are observed during field screening, a sample will be collected from the 6-7 ft bgs depth interval. If obvious impacts are observed during field screening, H&H will advance additional borings downgradient of SB-9 to further evaluate the lateral extent of potential impacts. The soil sample selected for laboratory analysis will be placed in dedicated laboratory supplied sample containers, labeled with the sample identification, date, and requested analysis, and placed in a laboratory supplied cooler with ice. The sample will be delivered to a North Carolina certified laboratory under standard chain of custody protocols for laboratory analysis of volatile organic compounds (VOCs) by EPA Method 8260, semi-VOCs (SVOCs) by EPA Method 8270, Resource Conservation and Recovery Act (RCRA) metals by EPA Methods 6020/7471, and hexavalent chromium by EPA Method 7199. Following sampling activities, the soil boring will be properly abandoned and the surface will be repaired similar to pre-drilling conditions. Additionally, the soil sample location will be estimated using a hand-held global positioning system (GPS) unit. 2.2 Sub-Slab and Exterior Soil Gas Sampling Activities To further evaluate the potential for structural vapor intrusion, H&H will collect six (6) sub-slab soil gas samples (SSV-1 through SSV-6) within the existing Site buildings. The approximate locations of the proposed sub-slab soil gas sampling points are shown on Figure 3, and are described further below:  One (1) sub-slab soil gas sample will be collected in Building 2,  three (3) sub-slab soil gas samples will be collected in Building 3, and  two (2) sub-slab soil gas samples will be collected in Building 4. The sub-slab soil gas sample locations shown in Figure 3 may be adjusted to 1) minimize damage to floors or floor coverings, and 2) to analyze sub-slab conditions in areas separated by building footers if indications of building footers are observed during field sample location 9 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc selection. H&H will also install one (1) temporary exterior soil gas sampling point (SG-16) to further evaluate the potential for structural vapor intrusion into proposed townhome buildings in areas located northeast of Building 3. The location of the temporary exterior soil gas sampling point is shown on Figure 3. The sub-slab soil gas sampling points will be installed using a rotary hammer drill and 1½-inch diameter drill bit to advance a pilot hole into the concrete slab to a depth of approximately 1¾ inches below the slab surface. A drill guide will then be placed within the pilot hole, and a 5/8- inch diameter drill bit will be utilized to advance a boring through the concrete slab and approximately 6-inches into the underlying soil. Following borehole advancement, loose concrete cuttings will be removed from each boring, and a Cox-Colvin Vapor PinTM (vapor pin) assembly (brass sampling point and silicone sleeve) will be seated in the borehole using an installation/extraction tool and dead blow hammer to form an air tight seal. The exterior soil gas sampling point will be installed to a depth approximately 5 ft above the water table and no shallower than 5 ft bgs. Based on previous assessment activities completed at the Site, the temporary exterior soil gas sampling point will be installed to a depth of approximately 5.5 ft bgs. The soil gas sampling point boring will be advanced using a decontaminated stainless-steel decontaminated hand auger to approximately 5 ft bgs and a DPT capable drill-rig to depth. An approximate 6-inch stainless steel vapor implant screen attached to Teflon® sample tubing will then be placed at the base of the borehole. Annular space around the vapor implant screen will be filled with filter sand to a depth of approximately 6-inches above the vapor screen. Following installation of the sand, hydrated bentonite will be installed in the boring from the top of the sand to near the ground surface. The soil gas sampling point will be allowed to equilibrate after installation and prior to sample collection. The sub-slab and exterior soil gas samples will be collected utilizing a laboratory supplied batch certified stainless-steel Summa® canister (1-liter or 3-liter canisters depending on laboratory availability) connected to an air-flow regulator calibrated by the laboratory to collect the soil gas sample at a rate of approximately 100 milliliters per minute. Prior to sample collection, a “shut- 10 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc in” test will be conducted on the sampling train and helium leak checks will be conducted at each sampling point. The purpose of the shut-in test and helium leak check is to ensure short circuiting with ambient air does not occur during sampling. A description of the shut-in test and helium leak testing procedures is provided below. The shut-in test will be conducted by connecting the flow regulator with the vacuum gauge to the Summa® canister and sealing the flow regulator with the laboratory provided brass cap. Once the sampling train is “closed”, the sample valve on the Summa® canister will be opened and the reading on the vacuum gauge will be recorded. The Summa® canister sample valve will then be closed and the vacuum gauge will be observed to ensure no vacuum loss occurs. If the vacuum reading remains the same, the shut-in test will be considered successful. If vacuum loss occurs, the flow regulator and/or brass cap will be reseated and the shut-in test will be repeated until the vacuum reading remains stable. Following the shut-in test, the Summa® canister will be connected to the sample point via Teflon® sample tubing using a brass nut and ferrule assembly to create an air tight seal and the leak check will be performed. The leak check will be performed by constructing a shroud over the sample train at each sampling point and flooding the air with helium gas. Helium concentrations inside the shroud will be measured using a calibrated helium gas detector and maintained at concentrations of approximately 15% to 30% for the duration of the leak check. Once helium concentrations stabilize within the shroud, the sample tubing will be purged outside of the shroud using a syringe and a three-way valve to collect purged soil gas into a Tedlar® bag. The purged soil gas will then be analyzed using the helium gas detector to ensure that helium concentrations in the sampling train are less than 10% of the helium concentrations measure within the shroud. Following a successful leak check, the intake valve on the Summa® canister will be fully opened to begin collection of the soil gas sample. Vacuum readings on the Summa® canister will be recorded prior to and following the sampling period to ensure adequate sample volume was collected. A vacuum of approximately 5 inches of mercury or more will be maintained within the canisters at the conclusion of the sampling event in accordance with DEQ DWM guidance. 11 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc Following sample collection, the Summa® canisters will be placed in laboratory supplied shipping containers, properly labeled, and shipped under standard chain-of-custody protocols to a qualified laboratory for analysis of VOCs by EPA Method TO-15. The laboratory will be requested to use reporting limits that are below DEQ DWM Residential Vapor Intrusion SGSLs. After sample collection, the sample locations will be estimated by measuring from known benchmarks within the building (e.g., doors, windows, exterior walls, etc.) or with a hand-held GPS. 2.3 Quality Assurance – Quality Control Non-dedicated equipment and tools will be decontaminated prior to use at each boring or sampling location or following exposure to soil or groundwater. The following samples will be collected for quality assurance/quality control (QA/QC) purposes:  One duplicate soil sample will be collected and analyzed for the same parameters as the parent sample.  One duplicate sub-slab soil gas sample will be collected using a laboratory supplied “t-fitting” which allows for two soil gas samples to be collected from one soil gas monitoring point simultaneously. The duplicate soil gas sample will be submitted for analysis of VOCs by EPA Method TO-15. Laboratory QA/QC procedures will be employed to ensure appropriate sample handling and analysis and to aid in the review and validation of the analytical data. QA/QC procedures will be conducted in accordance with the method protocols and will include regular equipment maintenance, equipment calibrations, and adherence to specific sample custody and data management procedures. Samples will be analyzed in conjunction with appropriate blanks, laboratory duplicates, continuing calibration standards, surrogate standards, and matrix spiking standards in accordance with approved methodologies to monitor both instrument and analyst performance. Laboratory reporting limits for each analyte will be at or below appropriate 12 https://harthick.sharepoint.com/sites/masterfiles-1/shared documents/aaa-master projects/ardent - aco/aco.002 - 6500 south boulevard/brownfields/assessment/work plan/25046 - harrelson ford_brownfields assessment work plan.doc screening criteria, where possible. Additionally, H&H will request that the laboratory include estimated concentrations for compounds that are detected at levels above the laboratory method detection limit, but below the laboratory reporting limit (J flags). The laboratory analytical data report and QA package submitted to and analyzed by the subcontracted laboratory will be provided in an appendix to the final report. Laboratory QA data consistent with Level II documentation will be provided for this project. A copy of the completed chain of custody record and shipping receipt will be appended to the corresponding laboratory analytical report included with the final report. 2.4 Investigation Derived Waste (IDW) Management Investigation derived waste (IDW) generated during the proposed assessment activities is expected to be minimal and will be placed back in the holes or thin spread on-Site. However, if significant impacts are suspected (i.e., free-product) the soil cuttings will be containerized in labeled 55-gallon drums and staged on-Site pending analytical results of a composite IDW sample. Based on laboratory analytical results of IDW samples, the drums will be transported off-Site to a suitable facility. 2.5 Reporting Following completion of the assessment activities and receipt of the analytical data, H&H will document our findings in a Brownfields Assessment Report. The report will include a description of Site activities, rationale for potential deviations from the work plan (if warranted), a figure depicting sample locations, tabular summaries of the data, laboratory analytical data, a discussion of the data in comparison to regulatory screening levels, cumulative risk calculations for sub-slab and exterior soil gas analysis (if warranted based upon the data), and conclusions and recommendations concerning our activities. Table 1Proposed Sample Summary TableHarrelson Ford6500 South BoulevardCharlotte, North Carolina H&H Project No. ACO-002SB-9 Soil GasFurther Evaluate Area of Previous Sample SG-710 6-7 1VOCs (8260), SVOCs (8270), RCRA Metals 6020/7471, Hexavalent Chromium (7199)SSV-1 through SSV-6 Sub-Slab Vapor vapor pin vapor pin 6 VOCs (TO-15)SG-16 Soil Gas 5.5 5.5 1 VOCs ((TO-15)SB-DUP Soil Gas 10 6-7 1VOCs (8260), SVOCs (8270), RCRA Metals 6020/7471, Hexavalent Chromium (7199)SSV-DUP Sub-Slab Vapor vapor pin vapor pin 1 VOCs (TO-15)Notes:The EPA method number follows the laboratory parameter in parenthesis in the table above. VOCs = Volatile Organic Compounds; SVOCs = Semi-VOCs; RCRA = Resource Conservation and Recovery Actft = feet; QA/QC = Quality Assurance/ Quality Control; VI = Vapor Intrusion; NA = Not ApplicableLaboratory AnalysisSample ObjectiveSample TypeApproximate Sample Depth (ft)Evaluation Potential VI RisksQA/QCSample IDsApproximate Boring Depth (ft)Number of Sampleshttps://harthick.sharepoint.com/sites/MasterFiles‐1/Shared Documents/AAA‐Master Projects/Ardent ‐ ACO/ACO.002 ‐ 6500 South Boulevard/Brownfields/Assessment/Work Plan/Tables/Sample Summary Table.xlsxTable 1 (Page 1 of 1)Hart & Hickman, PC USGS The National Map: National Boundaries Dataset, 3DEP ElevationProgram, Geographic Names Information System, National HydrographyDataset, National Land Cover Database, National Structures Dataset,and National Transportation Dataset; USGS Global Ecosystems; U.S.Census Bureau TIGER/Line data; USFS Road Data; Natural Earth Data;U.S. Department of State Humanitarian Information Unit; and NOAANational Centers for Environmental Information, U.S. Coastal ReliefModel. Data refreshed May, 2020. SITE LOCATION MAP HARRELSON FORD6500 SOUTH BOULEVARDCHARLOTTE, NORTH CAROLINA DATE: 6-23-21 JOB NO: ACO-002 REVISION NO: 0 FIGURE. 1 2923 South Tryon Street - Suite 100Charlotte, North Carolina 28203704-586-0007 (p) 704-586-0373 (f)License # C-1269 / # C-245 Geology TITLE PROJECT 0 2,000 4,000 SCALE IN FEET Path: S:\AAA-Master Projects\Ardent - ACO\ACO.002 - 6500 South Boulevard\Figures\Figure-1.mxdN U.S.G.S. QUADRANGLE MAP CHARLOTTE EAST, NORTH CAROLINA 2013CHARLOTTE WEST, NORTH CAROLINA 2013 QUADRANGLE7.5 MINUTE SERIES (TOPOGRAPHIC) SITE REVISION NO. 0 JOB NO. ACO-002 DATE: 2-1-22 FIGURE NO. 2 HARRELSON FORD 6500 SOUTH BOULEVARD CHARLOTTE, NORTH CAROLINA SITE MAP LEGEND BROWNFIELDS PROPERTY BOUNDARY PARCEL BOUNDARY RAILROAD TRENCH DRAIN RECTANGULAR FLOOR DRAIN CIRCULAR FLOOR DRAIN WASTE OIL AST NEW OIL AST FORMER UST CONCRETE SECONDARY CONTAINMENT VENT PIPE OUT-OF-USE IN-GROUND HYDRAULIC LIFT OIL/WATER SEPARATOR 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology PARKING NOTES: 1.PARCEL DATA OBTAINED FROM MECKLENBURG COUNTY GIS, 2021. 2.AERIAL IMAGERY OBTAINED FROM MECKLENBURG COUNTY GIS, 2021.OLD PINEVILLE ROADSOUTH BOULEVARDVICTORY CHRISTIAN CAMPUS (7000 OLD PINEVILLE ROAD) BANNER (6424 SOUTH BOULEVARD) ADAMS CAR SALES AND SERVICE (6501 & 6511 SOUTH BOULEVARD) FISHY FISH MARKET (6531 SOUTH BOULEVARD) AMERICAN AUTO SALES (6535 SOUTH BOULEVARD) LIFT AUTO AND SALES (6543 SOUTH BOULEVARD) SOUTH BOULEVARD CAR WASH CENTER (6547 SOUTH BOULEVARD) GOODWILL (6607 SOUTH BOULEVARD) LA PREFERIDA (6625 SOUTH BOULEVARD) PAVED PARKING (NO ASSIGNED ADDRESS) BUILDING #1 - VACANT WAREHOUSE BUILDING #2 - MULTI-TENANT AUTO REPAIR OFFICES/ STORAGE OFFICES BUILDING #4 - MAINTENANCE BAYS WITH ABOVEGROUND HYDRAULIC LIFTS BUILDING #3 - MAINTENANCE BAYS WITH OUT-OF-USE IN-GROUND HYDRAULIC LIFTS S:\AAA-Master Projects\Ardent - ACO\ACO.002 - 6500 South Boulevard\Brownfields\Assessment\Work Plan\Figures\Figures 20220201.dwg, FIG 2, 2/2/2022 12:22:03 PM, sperry BG-3 BG-2 BG-1 SB-6 SB-7 SB-3 SB-5 SB-4 SB-2 SG-5 SG-1 SG-6 SG-11 SG-12SG-7 SG-2 SG-3 SG-8 SG-13 SG-14 SG-4 SG-9 SG-10 SG-15 TMW-1 TMW-5 TMW-3/SB-8 TMW-4/SB-1 TMW-2 REVISION NO. 0 JOB NO. ACO-002 DATE: 2-1-22 FIGURE NO. 3 HARRELSON FORD 6500 SOUTH BOULEVARD CHARLOTTE, NORTH CAROLINA PROPOSED SAMPLE LOCATION MAP LEGEND BROWNFIELDS PROPERTY BOUNDARY PARCEL BOUNDARY EXISTING BUILDING LOCATION RAILROAD 2' ELEVATION CONTOURS (FT. MSL) TRENCH DRAIN RECTANGULAR FLOOR DRAIN CIRCULAR FLOOR DRAIN FORMER UST VENT PIPE OUT-OF-USE IN-GROUND HYDRAULIC LIFT OIL/WATER SEPARATOR PROPOSED TOWNHOME DEVELOPMENT FORMER MONITORING WELL LOCATION FORMER CO-LOCATED SOIL BORING AND TEMPORARY MONITORING WELL LOCATION FORMER SOIL BORING LOCATION FORMER BACKGROUND SOIL BORING LOCATION FORMER SOIL GAS SAMPLE LOCATION PROPOSED SOIL BORING LOCATION PROPOSED SOIL GAS SAMPLE LOCATION PROPOSED SUB-SLAB SAMPLE LOCATION 2923 South Tryon Street-Suite 100 Charlotte, North Carolina 28203 704-586-0007(p) 704-586-0373(f) License # C-1269 / #C-245 Geology PARKING NOTES: 1.PARCEL DATA OBTAINED FROM MECKLENBURG COUNTY GIS, 2021. 2.PRELIMINARY REDEVELOPMENT PLAN PREPARED BY LAND DESIGN. 3.ELEVATION CONTOURS OBTAINED FROM MECKLEBURG COUNTY LIDAR, 2017. 4.FORMER SOIL, GROUNDWATER, AND SOIL GAS SAMPLES COLLECTED BY H&H IN AUGUST 2021. 5.UST = UNDERGROUND STORAGE TANK FT. MSL = FEET ABOVE MEAN SEA LEVELOLD PINEVILLE ROADSOUTH BOULEVARDBUILDING 1 BUILDING 2 BUILDING 4 BUILDING 3 644 SSV-1 SSV-2 SSV-3 SSV-4 SSV-5 SSV-6 SG-16 SB-9 S:\AAA-Master Projects\Ardent - ACO\ACO.002 - 6500 South Boulevard\Brownfields\Assessment\Work Plan\Figures\Figures 20220201.dwg, FIG 3, 2/2/2022 12:30:02 PM, sperry