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Home My WebLink AboutWS-27755_47273_CA_SCH_20200609 SITE CHECK BP (AMOCO) FOOD SHOP - GRAHAM 924 EAST HARDEN STREET GRAHAM, ALAMANCE COUNTY, NORTH CAROLINA PREPARED FOR: MR. MICHAEL TOMPKINS MCLEOD OIL COMPANY, INC. PO BOX 100 MEBANE, NORTH CAROLINA 27302 PREPARED BY: PILOT GEOLOGICAL, PLLC PO BOX 128 KERNERSVILLE, NORTH CAROLINA 27285 JUNE 9, 2020 PILOT PROJECT NO. 5837 SITE INFORMATION Site Name and Location BP (Amoco) Food Shop - Graham 924 East Harden Street Graham, North Carolina Incident No. Pending Facility ID: 00-0-0000031886 Latitude and Longitude: 36 03’ 39.87” N; 79 22’ 48.76” W Land Use Category: Commercial Contacts Owner of UST: McLeod Oil Company, Inc. PO Box 100 Mebane, North Carolina 27302 (919) 563-3172 Primary Contact: Mr. Michael Tompkins McLeod Oil Company, Inc. (919) 563-3172 Consultant: Pilot Geological, PLLC PO Box 128 Kernersville, North Carolina 27285 (336) 310-4527 Drilling Contractor: 3D Environmental Investigations, LLC 2157 Mocksville Highway Statesville, North Carolina 28625 (704) 657-7785 Laboratory: Research and Analytical Laboratories, Inc. 106 Short Street Kernersville, North Carolina 27284 (336) 996-2841 Laboratory I.D. # 34 Release Information: Laboratory analysis of a groundwater sample collected on May 26, 2020 during site check activities detected petroleum compounds above the North Carolina 2L Groundwater Quality Standards. The estimated quantity of the release is unknown. Free product was not observed during the assessment activities. Table of Contents 1.0 SITE HISTORY ................................................................................................................................1 1.1 UST Information ......................................................................................................................1 2.0 FIELD ACTIVITIES ..........................................................................................................................1 2.1 Soil Sampling ...........................................................................................................................1 2.2 Groundwater Sampling and Monitoring Well Installation .........................................................1 3.0 LABORATORY ANALYTICAL RESULTS ..............................................................................................2 3.1 Groundwater Sample Analysis .................................................................................................2 4.0 CONCLUSIONS ..............................................................................................................................2 5.0 RECOMMENDATIONS ...................................................................................................................3 6.0 QUALIFICATIONS OF REPORT ........................................................................................................3 DRAWINGS Drawing 1 USGS Topographic Map Drawing 2 Site Map Drawing 3 Sample Location Map TABLE OF CONTENTS (continued) TABLES Table 1 UST Information Table 2 Monitoring Well Construction Information Table 3 Summary of Groundwater Analytical Results APPENDICIES Appendix A Monitoring Well Construction Record Appendix B Laboratory Data Sheets and Chain of Custody Records Site Check 924 East Harden Street Graham, North Carolina Pilot Project 5837 June 9, 2020 1 1.0 SITE HISTORY The site is located at 924 East Harden Street in Graham, North Carolina (Drawings 1 and 2). The site is currently developed with a gasoline station that contains an underground storage tank (UST) system consisting of two 8,000-gallon gasoline USTs and one 10,000-gallon gasoline UST. Pilot was requested to provide site check services related to the Notice of Regulatory Requirements (NORR) issued by the North Carolina Department of Environmental Quality (NCDEQ) dated May 11, 2020 requesting soil sampling in the vicinity of the spill buckets. Project information was provided through conversations between Mr. Michael Tompkins of McLeod Oil Company, Inc. and Mr. Jason Ricks of Pilot. 1.1 UST Information The current active UST system at the site consists of two 8,000-gallon gasoline USTs and one 10,000-gallon gasoline UST. The approximate locations of the USTs are shown on Drawing 3. UST information is summarized in Table 1. 2.0 FIELD ACTIVITIES The field activities were completed by Pilot on May 22 and 26, 2020. The field activities consisted of installing a monitoring well using a Geoprobe® drill rig. The Geoprobe® consists of a hydraulic jack mounted on an ATV (All-Terrain Vehicle) capable of driving various forms of groundwater and soil sampling probes into the ground to depths equivalent of auger refusal. The Geoprobe® subcontractor used for this project was 3D Environmental Investigations, LLC. Prior to initiating the, the Geoprobe® drill rig and associated down-hole equipment were decontaminated with a high-pressure steam cleaner. 2.1 Soil Sampling Soil samples were not collected based on pea gravel being located around each of the three UST spill buckets 2.2 Groundwater Sampling and Monitoring Well Installation Based on the presence of the pea gravel around the UST spill buckets, a permanent monitoring well (MW-1, Drawing 3) was advanced to an approximate depth of 17 feet below ground surface (bgs) for the installation of a permanent monitoring well using direct push technology (DPT). Probe refusal was encountered at approximately 17 feet bgs. The monitoring well was constructed with 1-inch I.D. schedule 40 PVC flushed-threaded casing and screen. The PVC screen and casing were lowered to the bottom of the borehole. A 12-foot length of slotted well screen with machined 0.010-inch slot widths and threaded bottom plug were installed at the bottom of the well. A solid section of PVC casing was placed above the screened interval and extended to a Site Check 924 East Harden Street Graham, North Carolina Pilot Project 5837 June 9, 2020 2 point approximately 0.5 foot below the ground surface. The annular space around the well was filled with washed fine filter sand to approximately one foot above the top of the screen. A minimum 1-foot thick seal of bentonite pellets was placed immediately above the sand pack. The top of the well casing was equipped with a lockable, water-tight well plug and a metal securable cover was placed over the monitoring well. The Monitoring Well Construction Record is included in Appendix A. A groundwater sample was collected the monitoring well using a peristaltic pump and new length of polyethylene tubing. Prior to sampling, approximately three well volumes were purged from the monitoring well. The monitoring well was purged to remove silt and sediment from the groundwater and collect a representative sample of groundwater. After the purging was completed, groundwater a sample was collected in the sample containers provided by the laboratory. Pilot personnel wore a new pair of disposable nitrile gloves during the purging and sampling. Each container was labeled and placed in a cooler containing ice to maintain the samples at approximately 4 Celsius. The samples were then transported to Research and Analytical Laboratories, Inc. (R&A) for chemical analysis. The groundwater samples collected were analyzed for volatile organic compounds (VOCs) using Standard Method 6200B, for volatile petroleum hydrocarbons (VPH) using the MADEP Method, for ethylene dibromide (EDB) using EPA Method 504.1 and for lead. A chain of custody was maintained and is included in Appendix B. 3.0 LABORATORY ANALYTICAL RESULTS 3.1 Groundwater Sample Analysis Laboratory analysis of the groundwater sample collected from monitoring well MW-1 detected targeted compounds above the North Carolina 2L Groundwater Quality Standards (2L Standards). Ethanol was not detected in the groundwater sample. A summary of the groundwater analytical results is presented in Table 3. The laboratory data sheets are included in the Appendix B. 4.0 CONCLUSIONS Based on the results of the Site Check, Pilot concludes the following: Laboratory analysis of the groundwater samples collected from monitoring well MW-1 detected targeted compounds above the 2L Standards. Ethanol was not detected in the groundwater sample. The lack of ethanol and free product appear to indicate that an active release is not occurring. The leak detection systems and annual test have also not indicated that there is an active release. Site Check 924 East Harden Street Graham, North Carolina Pilot Project 5837 June 9, 2020 3 5.0 RECOMMENDATIONS Pilot recommends that the current property owner/responsible party submit a copy of this report to the NCDEQ, UST Section for their review. 6.0 QUALIFICATIONS OF REPORT The activities and evaluative approaches used in this assessment are consistent with those normally employed in assessment projects of this type. Our evaluation of site conditions has been based on our understanding of the site project information and the data obtained during our field activities. DRAWINGS USGS Topographic Map 924 East Harden Street Graham, Alamance County, NC Pilot Project G-5837 Drawing 1 USGS Topographic Map Mebane and Burlington, NC Quadrangles Scale: 1” = 2,000’ LEGEND Site Boundary Site Map 924 East Harden Street Graham, Alamance County, NC Pilot Project G-5837 Drawing 1 Google Earth Interactive Mapping Software Scale : 1”= 175’ LEGEND Site Boundary U. UST System U See Drawing 3 Sample Location Map 924 East Harden Street Graham, Alamance County, NC Pilot Project G-5837 Drawing 3 Google Earth Interactive Mapping Software Scale : 1”= 15’ LEGEND Site Boundary Approximate Monitoring Well Location MW-1 TABLES UST ID NumberOwner Last ContentsPrevious ContentsCapacity (in Gallons)Construction DetailsTank DimensionsInstallation DateStatus ReleaseFRP = Fiberglass Reinforced PlasticFRP N/A 10/16/1990 Active NoTable 1 - UST Information924 East Harden StreetGraham, North Carolina10/16/1990 Active No1Gasoline Gasoline 10,000 FRP N/AMcLeod Oil Company PO Box 100 Mebane, North Carolina 273023Gasoline Gasoline FRP N/A 10/16/1990 Active No8,0002Gasoline Gasoline 8,000 Monitoring Well IDDate InstalledWell Diameter (inches)Elevation (TOC) Total DepthScreened Interval (feet)Sand IntervalBentonite IntervalMW-1 5/22/2020 1 -- 17 5-17 4-17 3-4Table 2 - Monitoring Well Construction Information924 East Harden StreetGraham, North Carolina 504.1Sample IDApproximate Water Level (ft. BGS)Groundwater Elevation (ft.)Sample Collection DateBenzeneEthylbenzeneI-PropylbenzeneNaphthaleneN-ButylbenzeneN-Propylbenzenep-IsopropyltolueneToluene1,2,4-Trimethylbenzene1,3,5-TrimethylbenzeneTotal XylenesEDBLeadC5-C8 AliphaticsC9-C12 AliphaticsC9-C10 AromaticsMW-1 11.29 -- 5/26/2020108 373 40.2 143 22.2 116 27.8 476 1,320 383 2,470BQL16.1 2,640 24,900 11,4001 600 70 6 70 70 25 600 400 400 500 0.02 15 400 700 2005,000 84,500 25,000 6,000 6,900 30,000 11,700 260,000 28,500 25,000 85,500 50 15,000 NS NS NS= Concentration Exceeds the 2L Standard= Concentration Exceeds the GCLsppb = Parts Per BillionBGS = Below Ground SurfaceN/A = Not ApplicableNS = No StandardNC 2L Standard (ppb)GCLs (ppb)Table 3 - Summary of Groundwater Analytical Results924 East Harden StreetGraham, North CarolinaTargeted CompoundsVPH 6200BComparison Criteria APPENDIX A APPENDIX B