The URL can be used to link to this page

Home My WebLink AboutMO-30109_49173_C_UST-12_20230815 August 15, 2023 Mr. Eric McManus D.H. Griffin Wrecking Co. PO Box 7405 Greensboro, North Carolina 27417 Reference: UST Closure Report St. Stephens High School 3205 34th Street NE Hickory, Catawba County, North Carolina 28601 ECS Project No. 49:19784 Dear Mr. McManus: As authorized by your acceptance of our proposal 49:36519P, ECS Southeast, LLP (ECS) is pleased to provide you with this UST Closure Report for the subject site located in Hickory, Catawba County, North Carolina. This report includes a description of the work performed, the results obtained, and our conclusions and recommendations. We appreciate the opportunity to work with you on this project. If you have any questions or require any further information, please feel free to contact us. Sincerely, ECS SOUTHEAST, LLP Don Marlor, P.G. Joseph P. Nestor, P.G., P.E. Environmental Project Manager Environmental Principal dmarlor@ecslimited.com jnestor@ecslimited.com (828) 665-2307 (704) 280-7422 SITE INFORMAITON Facility I.D.: 00-0-0000029167 UST Incident No.: N/A Site Rank: Not Assigned Land Use Category: Commercial/Education Site Name and Location: St. Stephens High School 3205 34th St. Dr. NE Hickory, Catawba County, North Carolina Location Method: Google Earth Latitude and Longitude: 35.772187 by -81.269725 Contacts Operator and Owner of UST: Catawba County Board of Education Current Property Owner: 10 E 25th ST/P.O. BX 1010 Consultant: ECS Southeast, LLP 1900 Hendersonville Road, Suite 10 Asheville, North Carolina 28803 828-785-4183 Attn: Don R. Marlor, P.G. Laboratory: Red Lab, LLC 105 Portwatch Way, Suite F Wilmington, North Carolina 28412 St. Stephens High School – UST Removal 3205 34th St. Dr. NE Hickory, Catawba County, North Carolina ECS Project No. 49-19784 August 15, 2023 TABLE OF CONTENTS 1.0 SITE INFORMATION ............................................................................................................ 2 2.0 OBSERVATION AND SAMPLE COLLECTION ACTIVITIES ............................................................ 2 2.1 UST-2 and UST-3 Form Submittal ......................................................................................... 2 2.2 UST Removal ......................................................................................................................... 2 2.2 Soil Sample Collection Activities ........................................................................................... 2 3.0 LABORATORY ANALYTICAL RESULTS ..................................................................................... 3 3.1 Soil Analytical Results ........................................................................................................... 3 4.0 CONCLUSIONS AND RECOMMENDATIONS ............................................................................ 3 FIGURES Figure 1 USGS Topographic Map Figure 2 Sample Location Map TABLES Table 1 UST Information Table 2 Soil Sample PID Readings Table 3 Summary of UST Closure Soil Sample Results APPENDICES Appendix A UST Notice of Intent Forms Appendix B Liquid and UST Disposal Manifests Appendix C Photo-Documentation Appendix D Laboratory Analytical Data Sheets and Chain of Custody Records St. Stephens High School – UST Removal 3205 34th St. Dr. NE Hickory, Catawba County, North Carolina ECS Project No. 49-19784 August 15, 2023 1.0 SITE INFORMATION The subject property is located at 3205 34th St. Dr. NE, Hickory, Catawba County, North Carolina. An USGS Topographic Map that indicates the site location is provided as Figure 1. It is ECS’ understanding that the 20,000-gallon UST and the 2,000-gallon UST were formerly utilized to store heating oil and supply the boilers at the school. UST information is summarized in Table 1. 2.0 OBSERVATION AND SAMPLE COLLECTION ACTIVITIES 2.1 UST-2 and UST-3 Form Submittal ECS completed an UST-3 Notice of Intent: UST Permanent Closure Form and submitted it to Mr. Brad Newton with the Division of Waste Management Underground Storage Tank Section of NCDEQ on May 2, 2023. ECS completed an UST-2A and UST-2B form following tank removal. The UST-3 and UST-2 forms are included as Appendix A. 2.2 UST Removal On June 1, 2023, ECS mobilized to the site to observe private utility locating services. It was discovered that two electrical lines crossed the 20,000-gallon UST. Due to the presence of the electrical lines, UST removal activities were temporarily postponed until the electrical lines could be abandoned. Following abandonment of the electrical lines, ECS mobilized to the site on July 18, 2023 to conduct soil sampling activities. Representatives of DH Griffin had vacuumed approximately 571 gallons of liquids from the USTs and transported the liquids offsite for disposal. Following the liquid removal, DH Griffin removed the UST from the ground using an excavator. The UST and the liquid disposal manifests are included in Appendix B. ECS observed a fill port and spill bucket at the 20,000-gallon UST. Two sets of product lines were present. Based on previous private utility locating activities and site observations upon UST removal, one smaller diameter set of product lines extended from the northeastern wall of the excavation and daylighted in the retaining wall near the cooling unit to the east. Due to electrical lines, approximately 10 feet of approximately 35 feet of product line was able to be removed. The remainder was crimped and left in place. The second larger diameter set of product lines extended beneath the concrete slab/walkway to south and ran directly adjacent to the building foundation before daylighting in the boiler room. The southern larger product lines were crimped and left in place due to concerns for damaging the building foundation and concrete slab if removed. Approximate excavation dimensions, product line locations, and soil sample locations are depicted on Figure 2. Photo documentation is included in Appendix C. 2.2 Soil Sample Collection Activities Upon removal of the USTs, ECS collected four closure soil samples from soils located with 2 feet of the base of the 20,000-gallon UST (T-1, T-2, T-3, and T-4) at a depth of approximately 13 to 14 feet below ground surface (bgs) and two closure soil samples from soils located with 2 feet of the base of the 2,000- gallon UST (T-1A and T-2A). The closure soil samples were collected by an ECS professional directly beneath the former UST using the bucket of the excavator. Care was taken to obtain samples that did not come in contact with the excavator bucket. Samples were placed directly into laboratory containers. The samples were collected while the St. Stephens High School – UST Removal 3205 34th St. Dr. NE Hickory, Catawba County, North Carolina ECS Project No. 49-19784 August 15, 2023 environmental professional wore a new pair of disposable powder-free nitrile gloves and were screened for evidence of apparent impacts by noting staining, odor, and by collecting volatile organic vapor readings using a flame ionization detector (FID). Soil sample FID readings are summarized in Table 2. The soil sample collection location was determined during field activities based on field screening results. One soil sample was collected adjacent to the fill port of each UST (FP-1 and FP-1A). Additionally, ECS collected soil samples beneath the product lines where possible (PL-1 and PL-2). The soil samples were analyzed for Total Petroleum Hydrocarbons (TPH) as Gasoline Range Organics (GRO) and Diesel Range Organics (DRO) via EPA Method 8015C by a North Carolina certified laboratory. Based on field observations and screening with the FID, the soils beneath the UST did not appear impacted from a release from the UST. 3.0 LABORATORY ANALYTICAL RESULTS 3.1 Soil Analytical Results Review of the laboratory analytical results of the soil sample (T-3) collected from beneath the 20,000- gallon UST detected TPH-DRO at a concentration of 12.2 milligrams per kilogram (mg/Kg) below its North Carolina Department of Environmental Quality (NCDEQ) Action Level of 100 mg/Kg. Soil samples T-1, T-4, T-1A, and FP-1A detected concentrations of TPH-DRO less than 0.6 mg/Kg below its NCDEQ Action Level of 100 mg/Kg. Review of the analytical results of the soil samples did not detect TPH-GRO above laboratory reporting limits. A summary of the UST closure samples is included in Table 3. The laboratory report is included in Appendix D. 4.0 CONCLUSIONS AND RECOMMENDATIONS On July 18, 2023, ECS documented the removal of one 20,000-gallon UST and one 2,000-gallon UST from the site and associated petroleum liquids. ECS understands the UST were previously used to store heating oil for the school boilers. Based on the results of the soil analysis previously referenced, concentrations of TPH were not detected above NCDEQ State Action levels. ECS recommends submittal of this report to the NCDEQ UST Section for their review with a request for an approval letter for closure of the USTs. FIGURES FIGURE 1 TOPOGRAPHIC LOCATION MAP ST. STEPHENS HIGH SCHOOL UST REMOVAL 3204 34TH STREET HICKORY, CATAWBA COUNTY, NORTH CAROLINA ECS PROJECT NUMBER 49-19784 SOURCE:USGS TOPOGRAPHIC MAP ACCESSED 7/24/23 SCALE:AS SHOWN SITE FIGURE 2 SAMPLE LOCATION MAP ST. STEPHENS HIGH SCHOOL UST REMOVAL 3204 34TH STREET HICKORY, CATAWBA COUNTY, NORTH CAROLINA ECS PROJECT NUMBER 49-19784 SOURCE: GOOGLE EARTH DATED NOVEMBER 7, 2O22 SCALE: AS SHOWN APPROXIMATE SOIL SAMPLE LOCATION LEGEND APPROXIMATE UST BASIN EXCAVATION LOCATION T-1 13’ BGS T-213’ BGS T-314’ BGS T-4 14’ BGS PL-1 1.5’ BGS FP-1 3’ BGS PL-2 1.5’ BGS FP-1A 2’ BGS T-2A 8’ BGS T-1A8’ BGS APPROXIMATE PRODUCT LINE LOCATION APPROX. BASIN LENGTH =35FT APPROX. BASIN WIDTH =15FT APPROX. BASIN WIDTH =8.5FT APPROX. BASIN LENGTH = 15FT T-414’ BGS APPROXIMATE SAMPLE DEPTH BELOW GROUND SURFACE TABLES Contents Capacity (in Gallons) Construction Details Installation Date Last Used Date Removal Date Release Heating Oil 2,000 Steel 1/1/1970 Unkown 7/18/2023 No Heating Oil 20,000 Steel Unknown Unkown 7/18/2023 No Hickory, Catawba County, North CarolinaECS Project 49-19784 Table 1UST Information 3205 34th St. Dr. NESt. Stephens High School T-1 07/18/23 13 5.37 T-2 07/18/23 13 3.58 T-3 07/18/23 14 6.66 T-4 07/18/23 14 3.02 FP-1 07/18/23 3 4.61T-1A 07/18/23 8 7.93 T-2A 07/18/23 8 4.62 FP-1A 07/18/23 2 2.01 PL-1 07/18/23 1.5 5.56 PL-2 07/18/23 1.5 4.53 ECS Project 49-19784 Notes: FID = Flame Photoionization Detector. Sample ID Date Sampled Approximate Depth (ft) FID Reading (ppm) Hickory, Catawba County, North Carolina Table 2 Soil Sample FID ReadingsSt. Stephens High School3205 34th St. NE Gasoline Range Organics (GRO) Diesel Range Organics (DRO)T-1 <0.56 0.56 07/18/23 Beneath 20,000-gallon tank T-2 <0.58 <0.58 07/18/23 Beneath 20,000-gallon tank T-3 <0.56 12.2 07/18/23 Beneath 20,000-gallon tank T-4 <0.6 0.6 07/18/23 Beneath 20,000-gallon tank FP-1 <0.52 <0.52 07/18/23 Adjacent to the fill port (20,000- gallon tank) T-1A <0.28 <0.28 07/18/23 Beneath 2,000-gallon tank T-2A <0.37 <0.37 07/18/23 Beneath 2,000-gallon tank FP-1A <0.54 0.54 07/18/23 Adjacent to the fill port (2,000- gallon tank) PL-1 <0.53 <0.53 07/18/23 Product line from 20,000-gallon UST PL-2 <0.56 <0.56 07/18/23 Product line from 20,000-gallon UST NCDEQ Action Level (mg/kg) 50 100 Notes: Results report in milligrams per kilogram (mg/Kg) Sample ID Table 3Summary of UST Closure Soil Sample ResultsSt. Stephens High School3205 34th St. Dr. NEHickory, Catawba County, North CarolinaECS Project 49-19784 Total Petroleum Paramaters Collection Date Location APPENDIX A UST Notice of Intent Forms APPENDIX B Liquid and UST Disposal Manifests APPENDIX C Photo-Documentation Photo 1 – View of smaller UST removed. Photo 2 – View of large UST basin after removal. PHOTO DOCUMENTATION ST. STEPHENS HIGH SCHOOL – UST REMOVAL 3204 34TH STREET HICKORY, CATAWBA COUNTY, NORTH CAROLINA ECS PROJECT NUMBER: 49:19784 Photo 3 – View of large UST after removal. Photo 4 – View of small UST Basin and proximity to building. PHOTO DOCUMENTATION ST. STEPHENS HIGH SCHOOL – UST REMOVAL 3204 34TH STREET HICKORY, CATAWBA COUNTY, NORTH CAROLINA ECS PROJECT NUMBER: 49:19784 APPENDIX D Laboratory Analytical Data Sheets and Chain of Custody Records Hydrocarbon Analysis Results Client:ECS Samples taken Tuesday, July 18, 2023 Address:CHARLOTTE, NC Samples extracted Tuesday, July 18, 2023 Samples analysed Thursday, July 20, 2023 Contact:DON MARLOR Operator TORI KELLY Project:ST. STEPHENS-19784 10 T03308 Matrix Sample ID Dilution used BTEX (C6 - C9) GRO (C5 - C10) DRO (C10 - C35) TPH (C5 - C35) Total Aromatics (C10-C35) 16 EPA PAHs BaP HC Fingerprint Match % light % mid % heavy s T-1 NA NA <0.56 0.56 0.56 NA NA NA NA NA NA NA s T-2 NA NA <0.58 <0.58 <0.58 NA NA NA NA NA NA NA s T-3 NA NA <0.56 12.2 12.2 NA NA NA NA NA NA NA s T-4 NA NA <0.6 0.6 0.6 NA NA NA NA NA NA NA s FP-1 NA NA <0.52 <0.52 <0.52 NA NA NA NA NA NA NA s T-1A NA NA <0.28 <0.28 0.2 NA NA NA NA NA NA NA s T-2A NA NA <0.37 <0.37 <0.37 NA NA NA NA NA NA NA s FP-1A NA NA <0.54 0.54 0.54 NA NA NA NA NA NA NA s PL-1 NA NA <0.53 <0.53 <0.53 NA NA NA NA NA NA NA s PL-2 NA NA <0.56 <0.56 <0.56 NA NA NA NA NA NA NA Initial Calibrator QC check OK Final FCM QC Check OK 91.6 % Results generated by a QED HC-1 analyser. Concentration values in mg/kg for soil samples and mg/L for water samples. Soil values are not corrected for moisture or stone content Fingerprints provide a tentative hydrocarbon identification. The abbreviations are:- FCM = Results calculated using Fundamental Calibration Mode : % = confidence for sample fingerprint match to library (SBS) or (LBS) = Site Specific or Library Background Subtraction applied to result : (PFM) = Poor Fingerprint Match : (T) = Turbid : (P) = Particulate present Ratios QED Hydrocarbon FingerprintsProject:ST. STEPHENS-19784 ################## 2210 T-1 : V.Deg.PHC 72.5%,(FCM),(BO) 700 T-2 : PHC not detected 20007 T-3 : Pyrogenic HC 75.5%,(FCM) 1418 T-4 : V.Deg.PHC 73.1%,(FCM),(BO) 1407 FP-1 : PHC not detected,(BO),(P) 1203 T-1A : Residual HC,(BO) 700 T-2A : ,(FCM) 1735 FP-1A : V.Deg.PHC 64.2%,(FCM),(BO) 700 PL-1 : PHC not detected 700 PL-2 : Residual HC