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HomeMy WebLinkAboutWS-7425_30814_CA_IAR_20131224Initial Abatement Action Report A. Site Information 1. Site Identification ;Date of Report: _12/24/2013 ;Facility I.D.: Not Registered___ UST Incident Number (if known): _Not Known ;Site Name: _Meat Camp Volunteer Fire Department_________________________ ;Site Street Address: _118 Meat Camp Road _______________________________________________ ;City/Town: __Boone_________________Zip Code: _28607__County: _Watauga__________________ ;Description of Geographical Data Point (e.g., diesel fill port): Gasoline UST ;Location Method (GPS, topographical map, other):_GPS ;Latitude (decimal degrees): 36° 16” 11.85” N___ Longitude (decimal degrees): _81° 39’ 23.68”W__ 2. Information about Contacts Associated with the Leaking UST System (Addresses must include street, city, state, zip code and mailing address, if different) ;UST Owner/Operator: __ Meat Camp Volunteer Fire Department Address: c/o Mr. Larry Carrol, 200 Del Coffey Road, Boone, NC 28607_____Tel.: __(828) 264-6206 _______ ;Property Owner: John & Doretha Greene Life Estate_______________________________ Address: 4501 Hwy. 194 N, Boone, NC 28607 Tel.: 828-264-6402 ;Consultant/Contractor: _Geonetics Corporation___________________________________________ Address: _____157 Del Coffey Road, Boone, NC 28607_____Tel: ____(828) 773-3969_______ ;Analytical Laboratory: _Prism Labs, Inc._____________________State Certification No._275____ Address: ____449 Springbrook Road Charlotte, NC 28217_____________Tel: _(704) 529-6364 ______ 3. Information about Release ;Date Discovered: November 20, 2013_____________ ;Estimated Quantity of Release: _Unknown__________________________________________________ ;Cause of Release: _Leaking UST ________________________________________________________ ;Source of Release (Dispenser/Piping/UST): __1,000 gallon Steel Gasoline UST__________ ;Sizes and contents of UST system(s) from which the release occurred): __1,000 gallon Gasoline__ 4. Certification I, _____________________________, a Licensed Geologist for Geonetics Corp., do certify that the information contained in this report is correct and accurate to the best of my knowledge. Geonetics Corp.__ is licensed to practice geology in North Carolina. The certification number of the company or corporation is _C154_________________. B. Site History and Characterization 1. SITE HISTORY Table B- 2 UST Owner/Operator Information UST ID Number Name of Owner or Operator Dates of Ownership / Operation [(m/dd/yy) to (m/dd/yy)] Owner or Operator? 1 Meat Camp VFD Mid 1970s to November 20, 2013 both Address Telephone Number 118 Meat Camp Road Boone, NC 28607 (828) 264-6206 Table B-2 above shows UST Owner/Operator Information. 2. Site History – UST/AST System and Other Release Information Table B-1 Date: 12/23/13 Incident Number and Name: Meat Camp VFD US T ID Current/ Last Contents * Previous Content s * Capacity (in gallons) Construct ion Details ** Tank Dimensio ns Description of Associated Piping and Pumps Date Tank Installed Status of UST *** Was release associate d with the UST System? 1 Gasoline unknown 1000 steel 4’ x 10.5’ Steel product line to dispenser mid 1970s Closed/ Removed Yes Table B-1 lists information about the closed UST system. The location of this UST is shown relative to the former VFD building on Figure 2. 3. There are no known spills or releases at the Meat Camp VFD prior to the release discovered 11/20/13. The former Meat Camp Fire Department was located on a property that contained multiple buildings. One of these buildings was operated as a gas. There was a release documented from the USTs at this gas station. This earlier release is incident #30814, Meat Camp Service Station, at 116 Meat Camp Road. It is our understanding that the earlier release is being managed under the State Lead Federal Trust Fund, excepted on 8/7/2007. 4. Provide a comprehensive description of the release, including date discovered, cause and source (including tank identification number and contents), and the relationship of historical UST releases, non-UST releases, and off-site releases (indicate incident number) to contamination from current release. This 1,000 gallon gasoline UST was not used for many years. The UST was permanently closed by removal on November 20, 2013. Petroleum odors were noted in the UST excavation after removal of the UST. Holes were observed in the UST when it was removed from the excavation. One soil sample was collected from the soil (S-6) excavated around the former UST and petroleum constituents were detected in this soil sample by the TPH GRO method at a concentration of 85 ppm. There are no known spills or releases at this site prior to the release discovered 11/20/13. The Meat Camp VFD gasoline UST is located about 150 feet northwest of the USTs used at the Meat Camp Service Station. The location of the former service station USTs would probably be cross-gradient from a hydrogeology perspective. 5. Provide a brief description of site characteristics (including status of facility (active or inactive), land use of site and surrounding area, water supply, topography, vegetation, surface water, wells, buildings, surface cover, soil type, depth to and nature of bedrock, depth to groundwater, direction of groundwater flow, etc.) The Former Meat Camp VFD was located in a building next to a convenience store that previously sold gasoline. The property is used for commercial and residential purposes. There is a water supply well onsite. The well is located about 20 feet south of the former gasoline UST. The property is in the valley of Meat Camp Creek on a relatively level alluvial terrace. Meat Camp Creek is located 450 feet north of the source area (Figure 1). The soil consists of a fine to medium sandy silt at the surface. Alluvial sand and gravel was encountered in the UST excavation down to a depth of about 10 to 12 feet where saprolite was encountered. Bedrock was not encountered and depth to bedrock is unknown. Depth to groundwater is uncertain. There was water in one area of the excavation. It is not know if this is perched water around the UST or the actual water table. Groundwater from the shallow water table should flow north toward Meat Camp Creek. 6. Summarize initial abatement actions, assessment activities, and corrective actions performed to date and list all reports previously submitted. The UST was permanently closed by removal on November 20, 2013. Petroleum odors were noted in the UST excavation after removal of the UST. Holes were observed in the UST when it was removed from the excavation. Contaminated soil was excavated from the base and from four sidewalls of the excavation. Soil samples were collected from the base and sidewalls of the excavation in accordance to NCDENR confirmation soil sampling procedures outlined in the 2008 Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement for UST Releases. The only previous report submitted to NCDENR was the 24-Hour Report. C. Site Check Report A Site Check was not performed at this site. D. UST Closure Report A UST-2 form is included in Appendix 1. 1. Describe preparations for closure including steps taken to notify authorities, permits obtained, and steps taken to clean and purge the tanks. The WSRO of the NC DENR was notified prior to UST closure. Vapors in the UST were checked for explosive vapors with an Explosimeter. The Lower Explosive Limit (LEL) reading for the UST was 20%. 28 pounds of dry ice were placed in the tank on 11/19/13 to displace any oxygen in the UST. The LEL was checked on 11/20/13 and it measured less than 5% LEL. A UST closure permit was obtained from Watauga County Emergency Management. A Health and Safety Plan was prepared for the closure work. A tailgate safety meeting was conducted prior to commencing work and all parties signed the Health and Safety Plan. Geonetics Corporation met with Ms. Karen Hall of the WSRO at the site on 11/20/13 during the closure event. The residual fuel remaining in the tank was pumped into a 55-gallon drum using a hand pump. This drum was to be disposed of by the Meat Camp VFD. 2. Describe the closure procedure referencing site and sampling location maps and cross-sections presented in Section J of this report. Clearly state how the selection of sample types and locations was influenced by the nature of the stored substance, the type of initial alarm or cause for suspicion, the type of backfill, the depth to groundwater, and other factors appropriate for identifying the presence and source of a release. If presence of groundwater or bedrock require the installation and sampling of monitoring well(s), describe the process. The UST was permanently closed by removal on November 20, 2013. Petroleum odors were noted in the UST excavation after removal of the UST. Holes were observed in the UST when it was removed from the excavation. A total of 14.95 tons of contaminated soil was excavated from the tank pit. This soil was loaded into a truck and transported by Darren Moretz Backhoe Service to Environmental Soils in Lattimore NC. One composite soil sample (S-6) was collected from soil piled in the dump truck. This soil sample was analyzed by the TPH GRO method and detected petroleum constituents at a concentration of 85 ppm. Contaminated soil was excavated from the base and from four sidewalls of the excavation. Soil samples were collected from the base and sidewalls of the excavation in accordance to NCDENR confirmation soil sampling procedures outlined in the 2008 Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement for UST Releases. Soil sample S-1 was collected from the base of the excavation using the track hoe bucket from a depth of 12.0 feet. Soil samples S-2 (9.0’), S-3 (7.0’), S-4 (7.8’), and S-5 (8.1’) were collected from the sidewalls of the excavation using decontaminated stainless steel and encore samplers. The extent of the excavation and locations of soil samples are shown on Figure 3. All soil samples were collected while wearing a new pair of disposable latex gloves. The soil samples were collected in laboratory sealed containers and placed on ice. A chain of custody was initiated and the samples were transported to Prism Labs Inc. in Charlotte, NC for analysis. Soil samples were analyzed using EPA Method 8260 and the MADEP VPH method. Darren Moretz Backhoe Service transported the empty 1,000 gallon tank to Zebra Environmental & Industrial services, Inc. in High Point, NC. A Tank Disposal Manifest is included in Appendix B. The selection of sample types and locations was not influenced by the nature of the stored substance. Rather the samples were spaced evenly across the excavation to provide a representative determination of soil quality after the over excavation work was completed. Depth to groundwater is uncertain. There was water in one area of the excavation. It is not know if this is perched water around the UST or the actual water table. The UST excavation was backfilled with a load of clean fill material brought in from offsite. 3. Note the amount of residual material pumped from the tank and describe the storage, sampling and disposal of the residual material and the disposal of the tank, pumps and piping. The volume of residuals pumped from the UST was not measured. The residual fuel remaining in the tank was pumped into a 55-gallon drum using a hand pump. This drum was to be disposed of by the Meat Camp VFD. 4. If a release is determined, document initial response actions. Petroleum odors were noted in the UST excavation after removal of the UST. Holes were observed in the UST when it was removed from the excavation. Contaminated soil was excavated from the base and from four sidewalls of the excavation. Soil samples were collected from the base and sidewalls of the excavation in accordance to NCDENR confirmation soil sampling procedures outlined in the 2008 Guidelines for Site Checks, Tank Closure, and Initial Response and Abatement for UST Releases. A 24-hour report was submitted to NC DENR on 11/25/13. 5. Document any soil excavation activities. A total of 14.95 tons of contaminated soil was excavated from the tank pit. This soil was loaded into a truck and transported by Darren Moretz Backhoe Service to Environmental Soils in Lattimore NC. One composite soil sample (S-6) was collected from soil piled in the dump truck. This soil sample was analyzed by the TPH GRO method and detected petroleum constituents at a concentration of 85 ppm. 6. Document site investigation. Soil samples ranged from a sandy silt to sand. Each soil sample was screened in the field for petroleum vapors with a Photocheck 100 photoionization detector. The photoionization detector is calibrated with a 100-ppm isobutylene calibration gas mixture. Soil samples were placed in sealable plastic bags. The bagged samples were placed in a warm vehicle to allow petroleum vapors to volatize. The headspace in each sample bag was screened with the photoionization detector. The upper one to two feet of soil consisted of a sandy silt. Below this were sand beds with gravel lenses. Saprolite was encountered at a depth of about 10 to 12 feet. Soil sample S-1 was collected from the base of the excavation using the track hoe bucket from a depth of 12.0 feet. Soil samples S-2 (9.0’), S-3 (7.0’), S-4 (7.8’), and S-5 (8.1’) were collected from the sidewalls of the excavation using decontaminated stainless steel spoons and encore samplers. Soil sample S-7 was collected from directly below the former dispenser at a depth of one foot. Soil sample S-8 was collected below the product line at a depth of 1 foot, 5 inches. Both samples S-7 and S-8 were collected with decontaminated hand auger buckets. The extent of the excavation and locations of soil samples are shown on Figure 3. All soil samples were collected while wearing a new pair of disposable latex gloves. The soil samples were collected in laboratory sealed containers and placed on ice. A chain of custody was initiated and the samples were transported to Prism Labs Inc. in Charlotte, NC for analysis. Soil samples were analyzed using EPA Method 8260 and the MADEP VPH method. Location of the soil samples is shown on Figure 3. All soil samples were collected on November 20, 2013. The sample time is listed on the Chain of Custody. Depth to groundwater is uncertain. There was water in one area of the excavation. It is not know if this is perched water around the UST or the actual water table. The stainless steal sampling and auger buckets were decontaminated with non-phosphate detergent, distilled water and isopropyl alcohol. A new pair of disposable latex gloves was worn while collecting each sample. Horizontal and vertical location of the soil samples were identified by measuring with a fiberglass tape, estimating right angles and referencing site features. Soil samples were stored on ice and shipped to Prism Labs in Charlotte, NC on November 21, 2013 via Federal Express. Soil samples were not collected for quality control. TPH GRO constituents were not detected in soil samples S-7 and S-8 at concentrations above the method detection limits. Table B-3 lists the petroleum constituents detected in soil samples S-1 through S-5. These samples did not contain petroleum constituent concentrations above the MSCCs (Table B-3). Soil sample S-6 was a composite sample collected from the dump truck. This sample contained TPH GRO at a concentration of 85 ppm. 7. Present conclusions and recommendations, referencing maps The source of soil contamination was the leaking 1,000 gallon gasoline UST. Excavation limits are shown on Figure 3. Over excavation confirmation soil sampling indicates that petroleum constituents remaining in the soil do not exceed the soil-to-groundwater or the residential Maximum Soil Contaminant Concentrations established by NC DENR (Table B-3). Free product has not been encountered at the site. The former Meat Camp Fire Department is located on a property that included a former gas station where a previous release has been documented. It is our understanding that the earlier release is being managed under the State Lead Federal Trust Fund. The previous release incident is known as the Meat Camp Service Station, Groundwater Incident #30814. . E. Free Product Investigation and Recovery Report Not Applicable F. Groundwater and Surface Water Investigation Not Applicable G. Initial Response and Abatement Action Petroleum odors were noted in the UST excavation after removal of the UST. Holes were observed in the UST when it was removed from the excavation. Contaminated soil was excavated from the base and from four sidewalls of the excavation. Soil samples were collected from the base and sidewalls of the excavation in accordance to NCDENR confirmation soil sampling procedures. A total of 14.95 tons of contaminated soil was excavated from the tank pit. This soil was loaded into a truck and transported by Darren Moretz Backhoe Service to Environmental Soils in Lattimore NC. One composite soil sample (S-6) was collected from soil piled in the dump truck. This soil sample was analyzed by the TPH GRO method and detected petroleum constituents at a concentration of 85 ppm. A 24-hour report was submitted to NC DENR on 11/25/13. H. Excavation of Contaminated Soil Soil samples ranged from a sandy silt to sand. Each soil sample was screened in the field for petroleum vapors with a Photocheck 100 photoionization detector. The photoionization detector is calibrated with a 100-ppm isobutylene calibration gas mixture. Soil samples were placed in sealable plastic bags. The bagged samples were placed in a warm vehicle to allow petroleum vapors to volatize. The headspace in each sample bag was screened with the photoionization detector. The upper one to two feet of soil consisted of a sandy silt. Below this were sand beds with gravel lenses. Saprolite was encountered at a depth of about 10 to 12 feet. Soil sample S-1 was collected from the base of the excavation using the track hoe bucket from a depth of 12.0 feet. Soil samples S-2 (9.0’), S-3 (7.0’), S-4 (7.8’), and S-5 (8.1’) were collected from the sidewalls of the excavation using decontaminated stainless steel spoons and encore samplers. Soil sample S-7 was collected from directly below the former dispenser at a depth of one foot. Soil sample S-8 was collected below the product line at a depth of 1 foot 5 inches. Both samples S-7 and S-8 were collected with decontaminated hand auger buckets. The extent of the excavation and locations of soil samples are shown on Figure 3. All soil samples were collected while wearing a new pair of disposable latex gloves. The soil samples were collected in laboratory sealed containers and placed on ice. A chain of custody was initiated and the samples were transported to Prism Labs Inc. in Charlotte, NC for analysis. Soil samples were analyzed using EPA Method 8260 and the MADEP VPH method. Location of the soil samples is shown on Figure 3. All soil samples were collected on November 20, 2013. The sample time is listed on the Chain of Custody. Depth to groundwater is uncertain. There was water in one area of the excavation. It is not know if this is perched water around the UST or the actual water table. The stainless steal sampling spoons and auger buckets were decontaminated with non-phosphate detergent, distilled water and isopropyl alcohol. A new pair of disposable latex gloves was worn while collecting each sample. Horizontal and vertical location of the soil samples were identified by measuring with a fiberglass tape, estimating right angles and referencing site features. Soil samples were stored on ice and shipped to Prism Labs in Charlotte, NC on November 21, 2013 via Federal Express. Soil samples were not collected for quality control. TPH GRO constituents were not detected in soil samples S-7 and S-8 at concentrations above the method detection limits. Table B-3 lists the petroleum constituents detected in soil samples S-1 through S-5. These samples did not contain petroleum constituent concentrations above the MSCCs (Table B-3). Soil sample S-6 was a composite sample collected from the dump truck. This sample contained TPH GRO at a concentration of 85 ppm. I. Conclusions The source of soil contamination was the leaking 1,000 gallon gasoline UST. Excavation limits are shown on Figure 3. Over excavation confirmation soil sampling indicates that petroleum constituents remaining in the soil do not exceed and soil-to-groundwater or the residential Maximum Soil Contaminant Concentrations established by NC DENR. Free product has not been encountered at the site. The former Meat Camp Fire Department is located on a property that has multiple buildings. One of these buildings was operated as a former gas station. An earlier release has been documented at the service station as incident #30814, Meat Camp Service Station, at 116 Meat Camp Road. It is our understanding that the earlier release is being managed under the State Lead Federal Trust Fund, excepted on 8/7/2007. The Meat Camp VFD gasoline UST is located about 150 feet northwest of the USTs used at the Meat Camp Service Station. The location of the former service station USTs would probably be cross-gradient from a hydrogeology perspective. E. Table B-3 and Figures Table B- 3 Summary of Soil Sampling Results Date: 12/17/13 Incident Name: Meat Camp VFD Incident #: Not Registered • • Analytical results reported in ppm • NA = Not analyzed • -- = Petroleum constituent not detected at or above minimum quantification limits Analytical Method  8015 TPH EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B EPA 8260B Sample ID Contaminant of Concern  TPH GRO Butylbenzene n- Butylbenzene sec- Acetone Ethyl Benzene Isopropylbenzene Naphthalene Propylbenzene-n Toluene Trimethylbenzene 1,2,4- Trimethylbenzene 1,3,5- Xylenes 4-Iosopropyltoluene Methyl Ethyl Ketone C5-C8 Aliphatics C9-C18 Aliphatics C9-C22 Aromatics Date Collected (m/dd/yy) Depth (ft BGS) S-1 11/20/13 12.0 NA -- -- 0.0063 0.0081 -- 0.0057 0.0048 -- 0.026 0.0091 0.0068 -- 0.0068 -- 2.9 1.6 S-2 11/20/13 9.0 NA -- -- 0.051 -- -- 0.0015 0.093 -- -- -- -- 0.0031 -- -- -- -- S-3 11/20/13 7.0 NA 0.031 0.016 0.017 0.012 0.022 0.064 -- 0.016 0.10 0.15 -- 0.012 -- 0.56 4.5 0.65 S-4 11/20/13 7.8 NA -- -- 0.016 -- -- 0.0022 -- -- 0.0029 -- -- 0.0029 -- -- -- \-- S-5 11/20/13 8.1 NA 0.0097 0.0048 0.075 0.020 0.0062 0.024 0.024 0.0084 0.15 0.046 0.0024 0.0096 0.0024 1.8 1.1 S-6 11/20/13 Truck 85 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA S-7 11/20/13 1.0 85 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA S-8 11/20/13 1.45 85 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Soil to groundwater MSCC (ppm) 4.3 3.3 24 4.9 1.7 0.16 1.7 4.3 8.5 8.3 4.6 0.12 16 68 540 31 Residential MSCC (ppm) 626 626 14000 1560 1564 313 626 1200 782 782 3129 100 9385 939 1500 469 Industrial/Commercial MSCC (ppm) 16350 16350 360000 40000 40880 8176 16350 32000 20440 20440 81760 4000 245280 24528 40000 12264 NC DENR Action Level (ppm) 10 10000 Feet Meat Camp VFD (Former) Geonetics Corporation 135 Del Coffey Road Boone, NC Source: Map provided by the U.S. Geological Survey National Map Site Location Map N Figure 1 Appendix A Laboratory Reports and Chain of Custody Appendix B Soil Disposal Manifest Tank Disposal Manifest Appendix C Standard Operating Procedures The WSRO of the NC DENR was notified prior to UST closure. Vapors in the UST were checked for explosive vapors with an Explosimeter. The Lower Explosive Limit (LEL) reading for the UST was 20%. 28 pounds of dry ice were placed in the tank on 11/19/13 to displace any oxygen in the UST. The LEL was checked on 11/20/13 and it measured less than 5% LEL. A UST closure permit was obtained from Watauga County Emergency Management. A Health and Safety Plan was prepared for the closure work. A tailgate safety meeting was conducted prior to commencing work and all parties signed the Health and Safety Plan. Soil sample S-7 and S-8 was collected using decontaminated auger buckets. Soil sample S-1 was collected from the Backhoe bucket. Soil samples S-2 through S-5 were collected from the excavation using decontaminated stainless steel spoons and encore samplers. The spoons and auger bucket were decontaminated with non-phosphate detergent, distilled water and isopropyl alcohol. Soil samples collected for laboratory analysis were placed in sample jars with Teflon-lined lids, chilled and Chain-of-Custody record was initiated. Soil samples were transported to Prism Labs Inc. in Charlotte, North Carolina for analyses. A new pair of disposable latex gloves was worn while collecting each sample. Horizontal and vertical locations of the soil samples were identified by measuring with a fiberglass tape, estimating right angles and referencing site features.