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Home My WebLink AboutMO-6952_27666_CA_SCH_20230309 3502 Hayes Road • Monroe, North Carolina 28110 113 West Firetower Road, Suite G • Winterville, North Carolina 28590 Phone (704) 845-4010 • (888) 870-4133 • Fax (704) 845-4012 March 9, 2023 Mr. Jerren Rogers NCDEQ-UST Section Raleigh Regional Office 1628 Mail Service Center Raleigh, NC 27699-1628 Re: Site Check Report Charlotte Travel Plaza 4601 Sunset Road Charlotte, Mecklenburg County North Carolina Facility ID Number: 0-032107 Incident Number: N/A GRI Project Number: 6378 Dear Mr. Rogers, Please find enclosed the referenced report for the above referenced site. If you have any questions, please contact Joanna Alley at 704-845-4010. Sincerely, Geological Resources, Inc. Leslie Maxtone-Graham Administrative Assistant Enclosure Cc: Mr. Christopher Whittaker; Nisbet Oil Company, file 3502 Hayes Road • Monroe, North Carolina 28110 113 West Firetower Road, Suite G • Winterville, North Carolina 28590 Phone (704) 845-4010 • (888) 870-4133 • Fax (704) 845-4012 Engineering Certification: C-2727 • Geology Certification: C-127 Site Check Report Charlotte Travel Plaza 4601 Sunset Road Charlotte, Mecklenburg County North Carolina Facility ID Number: 0-032107 Incident Number: N/A GRI Project Number: 6378 Prepared for: Christopher Whittaker Nisbet Oil Company 1818 Baxter Street Charlotte, North Carolina 28204 March 9, 2023 Joanna Alley, P.E. Project Manager Eric M. Eubanks, P.G. Report Writer ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Site Check Report Prepared on: March 9, 2023 Charlotte Travel Plaza Project Manager: Joanna Alley, P.E. GRI Project No. 6378 i EXECUTIVE SUMMARY The Charlotte Travel Plaza site is located at 4601 Sunset Road in Charlotte, Mecklenburg County, North Carolina. The property operates as a petroleum retail facility and convenience store. The site is covered by asphalt, concrete, and grass. There are one 10,000-gallon regular gasoline, one 10,000-gallon premium gasoline, and two 20,000-gallon diesel USTs currently in use at the site with twelve associated dispenser islands. During routine compliance testing activities, a non-passing spill bucket was documented for the 10,000- gallon premium gasoline UST. Therefore, a site check was required by NCDEQ. The spill bucket was replaced prior to site check activities. On February 20, 2023, GRI personnel conducted a site check in the vicinity of the 10,000-gallon premium UST spill bucket. A soil sample (SB-9-3’) was collected at a depth of approximately 3 feet BGS adjacent to the premium UST spill bucket. No detectible GRO was present in SB-9-3’. Please note that a previous release was documented at the site in 2003. This incident is currently still open. The previous assessment at the site indicated that one active, potable water supply well was located within 1,000 feet of the source area; as of December 2014, this water supply well was disconnected. Based on the information gathered from the current scope of work, no release has occurred from the spill bucket of the 10,000-gallon premium UST. ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Site Check Report Prepared on: March 9, 2023 Charlotte Travel Plaza Project Manager: Joanna Alley, P.E. GRI Project No. 6378 iii ACRONYMS ACM: Asbestos Containing Materials AFVR: Aggressive Fluid-Vapor Recovery ARR: Acknowledgement of Report Receipt AS: Air Sparging AST: Aboveground Storage Tank ASTM: American Society for Testing and Materials BGS: Below Ground Surface CAP: Corrective Action Plan CFR: Code of Federal Regulations CSA: Comprehensive Site Assessment DPE: Dual Phase Extraction DRO: Total Petroleum Hydrocarbons Diesel Range Organics DWM: Division of Waste Management DWR: Department of Water Resources EPA: Environmental Protection Agency EPH: Extractible Petroleum Hydrocarbons ESA: Environmental Site Assessment GCL: Gross Contamination Level GRI: Geological Resources, Inc. GRO: Total Petroleum Hydrocarbons Gasoline Range Organics LSA: Limited Site Assessment MAC: Maximum Allowable Concentration as specified in T15A NCAC 2L.0202 MADEP: Massachusetts Department of Environmental Protection MCC: Maximum Contaminant Concentrations MMPE: Mobile Multi-Phase Extraction NAPL: Non-Aqueous Phase Liquid, “Free Product” NCDEQ: North Carolina Department of Environmental Quality NCDOT: North Carolina Department of Transportation NFA: Notice of No Further Action NORR: Notice of Regulatory Requirements NOV: Notice of Violation NPDES: National Pollutant Discharge Elimination System NRP: Notice of Residual Petroleum O&M: Operation and Maintenance PAHs: Polynuclear Aromatic Hydrocarbons PCA: Pre-Construction Assessment RAL: Regulatory Action Level SCLs: Soil Cleanup Level SPCC: Spill Prevention Control and Countermeasures SVE: Soil Vapor Extraction SVOCs: Semi-Volatile Organic Compounds SWPPP: Stormwater Pollution Prevention Plan TCLP: Toxicity Characteristic Leaching Procedure (EPA Method SW-846 1311) TOC: Top of Casing TPH: Total Petroleum Hydrocarbons USGS: United States Geological Survey UST: Underground Storage Tank UVF: Ultraviolet Fluorescence VOCs: Volatile Organic Compounds VPH: Volatile Petroleum Hydrocarbons ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Site Check Report Prepared on: March 9, 2023 Charlotte Travel Plaza Project Manager: Joanna Alley, P.E. GRI Project No. 6378 TABLE OF CONTENTS EXECUTIVE SUMMARY ....................................................................................................................... i SITE INFORMATION ............................................................................................................................ ii ACRONYMS ....................................................................................................................................... iii A. SITE HISTORY AND CHARACTERIZATION ..............................................................................1 B. SITE CHECK PROCEDURES ....................................................................................................2 C. SITE INVESTIGATION ...........................................................................................................2 D. SUMMARY AND CONCLUSIONS ...........................................................................................2 E. LIMITATIONS ......................................................................................................................3 FIGURES Figure 1: Site Location Map Figure 2: Site Map Figure 3: Soil Quality Map TABLES Table 1: UST Owner/Operator Information Table 2: UST System Information Table 3: Summary of Soil Sample Analytical Results APPENDICES Appendix A: Subsurface Log Appendix B: UVF Analytical Report ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Site Check Report Prepared on: March 9, 2023 Charlotte Travel Plaza Project Manager: Joanna Alley, P.E. GRI Project No. 6378 1 A. SITE HISTORY AND CHARACTERIZATION 1. UST Owner and Operator Information: In accordance with the Site Check Report guidelines, the UST owner and operator information is summarized in the attached Table 1. 2. UST System Information: In accordance with the Site Check Report guidelines, the UST system information has been summarized in the attached Table 2. There are one 10,000-gallon regular gasoline, one 10,000-gallon premium gasoline, and two 20,000-gallon diesel USTs with four associated gasoline and eight diesel dispenser islands. The dispensers are located on the south side of the store building. A copy of the NCDEQ Registered Tank Report is shown below: 3. Non-UST Information: There are currently no ASTs and no known ASTs formerly at the site. 4. Comprehensive Description of the Release: Based on routine compliance testing, a non-passing hydrostatic result was reported for the 10,000-gallon premium gasoline spill bucket. The spill bucket was replaced prior to site check activities. A site check was required according to the NCDEQ. On February 20, 2023, one soil boring (SB-9) was advanced to approximately 3 feet BGS at the end of the premium gasoline UST, adjacent to the non- passing spill bucket. No detectible GRO was present in SB-9-3’. 5. Description of the Site Characteristics: The Charlotte Travel Plaza site is located at 4601 Sunset Road in Charlotte, Mecklenburg County, North ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Site Check Report Prepared on: March 9, 2023 Charlotte Travel Plaza Project Manager: Joanna Alley, P.E. GRI Project No. 6378 2 Carolina. (Figure 1). The property operates as a petroleum retail facility and convenience store. The site is covered by asphalt, concrete, and grass. There are one 10,000-gallon regular gasoline, one 10,000- gallon premium gasoline, and two 20,000-gallon diesel USTs currently in use at the site with four associated gasoline and eight diesel dispenser islands. The surrounding properties are commercial and residential. A Site Map is included as Figure 2. B. SITE CHECK PROCEDURES 1. Results of Tank and Line Tightness Testing: During routine compliance inspection activities, one non-passing UST spill bucket was documented at the site. The non-passing spill bucket was replaced prior to the start of site check activities. 2. Summary of Site Check Procedure: GRI performed a site check on February 20, 2023, that included the collection of one soil sample at the spill bucket associated with the 10,000-gallon premium gasoline UST. The soil sample (SB-9-3’) was collected using a hand auger at a depth of approximately 3 feet BGS. The soil boring log is provided as Appendix A. 3. Soil Excavation Activities: No soil excavation activities were conducted. C. SITE INVESTIGATION 1. Field Screening: Soil sample SB-9-3’, collected on February 20, 2023, was not screened for VOCs with a PID. 2. Soil Sampling Information: Soil sample SB-9-3’ was collected on February 20, 2023, and was analyzed for TPH-GRO using UVF technology. No detectible GRO was present in SB-9-3’. No free product was noted at the site. A soil quality map is presented as Figure 3. A summary of soil sample analytical results is presented in Table 3. The UVF analytical report is provided as Appendix B. A summary of the soil sampling data from the February 2023 Site Check activities is shown below: Sample ID Sample Depth (ft-BGS) Gasoline-Range TPH Diesel-Range TPH RAL (mg/kg) 50 100 Soil to Water MCC (mg/kg) NE NE Residential SCLs (mg/kg) NE NE SB-9-3’ 3 <10 NR 3. Quality-Control Measures: Clean, disposable nitrile gloves were used for the collection of the soil sample. D. SUMMARY AND CONCLUSIONS  The site is commercial, and the surrounding properties are commercial and residential. ___________________________________________________________________________________________ Prepared by: Geological Resources, Inc. Site Check Report Prepared on: March 9, 2023 Charlotte Travel Plaza Project Manager: Joanna Alley, P.E. GRI Project No. 6378 3  During a routine compliance inspection, a non-passing hydrostatic result was documented for the 10,000-gallon premium gasoline UST spill bucket. The non-passing spill bucket was replaced prior to site check activities.  A Site Check was conducted on February 20, 2023, to determine if a petroleum release had occurred.  One soil borings (SB-9) was advanced to approximately 3 feet BGS at the end of the premium gasoline tank, adjacent to the non-passing spill bucket. No detectible GRO was present in SB-9-3’.  Please note that a previous release was documented at the site in 2003. This incident is currently still open. Based on the information gathered from the current scope of work, no release has occurred from the spill bucket of the 10,000-gallon premium UST. E. LIMITATIONS This report has been prepared for the exclusive use of Nisbet Oil Company for the specific application to the referenced site in Mecklenburg County, North Carolina. The assessment was conducted based on the scope of work and level of effort specified by the NCDEQ and with resources adequate only for that scope of work. Our findings have been developed in accordance with generally accepted standards of geology and hydrogeology practices in the State of North Carolina, available information, and our professional judgment. No other warranty is expressed or implied. The data that are presented in this report are indicative of conditions that existed at the precise locations sampled and at the time the samples were collected. In addition, the data obtained from samples would be interpreted as being meaningful with respect to parameters indicated in the laboratory report. No additional information can logically be inferred from these data. FIGURES Figure 1 Site Location Charlotte Travel Plaza 4601 Sunset Road Charlotte, North Carolina Mechlenburg County Incident No. 27666 GRI Project No. 6378 1200 M 4000 FT Date: 02/24/2023 Location: 35.307932°N -80.849634°W D a d SITE LOCATION TABLES UST ID Number 1-4 Facility ID Number Owner or Operator? Owner/Operator UST ID Number 1-4 Facility ID Number Owner or Operator? Owner/Operator Unknown Unknown TABLE 1 UST OWNER/OPERATOR INFORMATION CHARLOTTE TRAVEL PLAZA (INCIDENT NO. N/A) Address Telephone Number Name of Owner or Operator Dates of Ownership / Operation 0-032107 Unknown 2/8/1979 to 2/1/1991 0-032107 Name of Owner or Operator Dates of Ownership / Operation NISBET Oil Company 2/1/1991 to present Address Telephone Number 1818 Baxter Street, Charlotte, NC 28204 704-458-8271 Page 1 of 1 Date: 02/23/23 Facility ID #: 0-032107 Was Release Associated with UST System? (Yes / No) 1 Regular Gasoline NA 10,000 2/8/1979 Single Wall Steel Unknown Single Wall FRP Current No 2 Premium Gasoline NA 10,000 2/8/1979 Single Wall Steel Unknown Single Wall FRP Current No 3 Diesel NA 20,000 2/8/1979 Single Wall Steel Unknown Single Wall FRP Current No 4 Diesel NA 20,000 2/8/1979 Single Wall Steel Unknown Single Wall FRP Current No UST ID No. TABLE 2 UST SYSTEM INFORMATION CHARLOTTE TRAVEL PLAZA (INCIDENT NO. N/A) Tank Dimensions Description of Associated Product Piping and Pumps Status of UST Current or Most Recent Contents Previous Contents Capacity (gallons) Date Installed Construction Details Page 1 of 1 Date: 02/24/23 Facility ID #: 0-032107 5030/ 8015D 3550/ 8015C Sample IDDate Collected (mm/dd/yy)Sample Depth(ft-BGS)Gasoline-Range TPHDiesel-Range TPH50 100 NE NE NE NE SB-9-3'02/20/23 3 <10 NR Notes: • Results reported in mg/kg (milligrams per kilograms) • Trip Blank results reported in ug/l (micrograms per liter) • ft-BGS: feet below ground surface. • RAL: Regulatory Action Level. • MCCs: Maximum Contaminant Concentrations (soils). • SCLs: Soil Cleanup Levels. • NE: Not Established • NR: Not Requested. TABLE 3 SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS CHARLOTTE TRAVEL PLAZA (INCIDENT NO. N/A) Analytical Method  • < : Less than the method detection limit specified in the laboratory report • Values in bold face type indicate reported concentrations exceeded the soil-to-water MCCs. • Values in italic type indicate the reported concentrations exceeded the residential SCLs. RAL (mg/kg) Soil to Water MCC (mg/kg) Residential SCLs (mg/kg) Page 1 of 1 APPENDICES Appendix A Subsurface Log Geological Resources, Inc.Phone:(704) 845-4010 3502 Hayes Road Fax:(704) 845-4012 Monroe, NC 28110 SUBSURFACE LOG Project Charlotte Travel Plaza Address 4601 Sunset Road, Charlotte, NC Boring Number SB-9 Date Drilled Sample Method Grab Drilling Method Hand Auger Completion Details Boring terminated @ 3.0' and abandoned w/ native soil Driller Kyle Perry; 4534C Log By Kyle Perry Lab Sample GRO Depth Sample Interval(ft)mg/kg LITHOLOGY 0 2 SB-9-3'3.0 <0.5 4 6 8 10 02/20/23 0.0' - 0.5' topsoil 0.5' - 3.0' tan/red silty CLAY Boring terminated @ 3.0' APPENDIX B UVF Analytical Report 3502 Hayes Road • Monroe, North Carolina 28110 113 West Firetower Road, Suite G • Winterville, North Carolina 28590 Phone (704) 845-4010 • (888) 870-4133 • Fax (704) 845-4012 Engineering Certification: C-2727 • Geology Certification: C-127 UVF Trilogy Analytical Report Samples Collected: February 20, 2023 Samples Analyzed: February 20, 2023 Site Name: Charlotte Travel Plaza Site Address: 4601 Sunset Road, Charlotte, NC GRI Project Number: 6378 February 20, 2023 Kyle Perry: Staff Scientist Operator Technical Procedures Sample Collection and Handling Soil samples may be collected using any acceptable procedure. Sampler must use a clean pair of nitrile gloves for each sample collected. The sample will be placed in a clean, sealable bag (ziplock). Once collected, the sample must be analyzed immediately or placed on ice. The sample may be kept on ice for up to 48 hours prior to UVF analyses. If the sample cannot be analyzed within 48 hours, the sample may be extracted and kept at 4 degrees C for up to 14 days. Proper chain-of-custody procedures must be followed. Calibration The UVF Trilogy has standard calibrations stored for the following analysis:  GRO  DRO  Total PAH  Target PAH  Heavy PAH Prior to use, calibration standards are used to perform a 5-point verification on the factory stored calibrations for GRO and DRO. The calibration standards used are as follows: GRO  0.5 ppm  1 ppm  3 ppm  5 ppm  10 ppm DRO  0.1 ppm  0.5 ppm  1 ppm  3 ppm  5 ppm Operation Sample Extraction  5mg of soil are weighed into a clean extraction jar  Methanol is added to the extraction jar to create a 2x or 4x dilution o 2x Dilution: 10 mL of methanol o 4x Dilution: 20 mL of methanol  The extraction jar is shaken for several minutes to thoroughly mix the soil with solvent (methanol)  The mixture is allowed to settle for several minutes  A clean syringe is used to draw liquid from the extraction jar  A clean filter is attached to the end of the syringe and the liquid dispensed through the filter into a clean test tube  This liquid is referred to as the extraction  Please note that any samples extracted and/or analyzed offsite require a Chain of Custody documenting the collection, extraction and custody of the sample(s) Technical Procedures Dilution Preparation  An adjustable micropipette is used to precisely measure out the amount of extract needed for the dilution  The measured out amount of the extract is added to a clean test tube and methanol is added to dilute the extract. Examples of dilutions are shown below: Extract Amount 500 μL 200 μL 100 μL 50 μL 25 μL Add Solvent to the 5 mL line 5 mL line 5 mL line 5 mL line 5 mL line 2x Extract Dilution Factor 20x 50x 100x 200x 400x 4x Extract Dilution Factor 40x 100x 200x 400x 800x Sample Analyzation  The dilution is shaken to thoroughly mix, then poured into a clean glass cuvette  The desired module is inserted into the UVF Trilogy and the corresponding factory calibration is selected  “Measure Fluorescence” is pressed on the touchscreen and the reading is recorded  The reading should be between the concentrations of the calibration standards (GRO: 0.5-10 ppm; DRO 0.1-5 ppm) o Reading below the calibration standard range are recorded as below the detection limit  Detection Limit = (lower range of calibration standards range) x dilution factor (i.e. a GRO sample with a 100x dilution factor has a detection limit of 50 ppm) o Readings above the calibration standard range should be further diluted and reanalyzed o Negative readings are an indication of quenching (see below)  The reading is multiplied by the dilution factor to calculate the final concentration  Check suspected contaminated samples for quenching by running additional dilutions o According to the siteLAB Quick Reference Guide: “Quenching” can occur when the detector is swamped by too many hydrocarbons or organic interferences, producing low or negative concentrations. Test the sample at multiple dilutions to confirm results are linear and accurate.” QA/QC Calibration  The UVF Trilogy will be calibrated daily prior to use  The calibration results will be saved and entered into the calibration log Method Blank  A method blank of methanol will be analyzed following calibration and following the last sample analyzed for each day Duplicates  One duplicate will be analyzed for every 20 samples  The duplicate will be prepared from the extract of the sample and diluted to the same factor as the sample analyzed Project Name:Date Collected: Project Number:Date Analysed: Project Manager:Operator: Sample ID Matrix Dilution Factor x GRO Output (ppm) =GRO Value (mg/Kg) Dilution Factor x DRO Output (ppm) =DRO Value (mg/Kg) SB-9-3'Soil 20 <0.5 <10 --------- UVF Analytical Report siteLAB UVF Trilogy 2/20/2023 2/20/2023 Kyle Perry Charlotte Travel Plaza 6378 Joanna Alley Site: Charlotte Travel Plaza Report Date: 2/20/2023 Page: 1 of 1