COMPLIANCE INFO_FILE 8 - Laserfiche WebLink

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CLOSURE REPORT FOR UNDERGROUND STORAGE TANK 827-D2U1 Any piping closed in place: [ X ]Yes [ ]No Describe where the piping was closed in place,and how it was closed(e.g.grouted and capped): Fuel contents drained into the tank then the pining at the edge of the concrete slab was cut and capped The pining section from the emergencygenerator to where it went into the concrete pad was also cut and capped Approximately 6-feet of underground piping (fuel supply and return,piling)was left in place under the concrete slab Underground concrete tank anchoring structure(s)were present: [ ]Yes [ X ]No Size and location of the concrete tank anchoring structure(s): N/A Description of tank and piping condition (corrosion,pitting, holes, etc.): The tank was in good condition with some external tank corrosion Photographs of the tank were taken by Marion Heaton(6/22/94) The tank and piping were transported by: Erickson.Inc. The tank and piping were disposed of as: Nan-RCRA Hazardous Waste. Solid (Empty Containers Last Containing Diesel Fuel with associated pining) Date: 6/22/94 Name and address of disposal facility: Erickson Inc. (Hauler Registration No. 0019), 255 Parr Blvd Richmond CA 94801 (510)235-1393 [ X ] Uniform Hazardous Waste Manifest"TSD Facility to Generator' and LLNL Hazardous Waste Disposal Requisition copies for UST 827-D2U1 are enclosed as Appendix C. [N/A] UST Disposition Tracking Record enclosed (San Joaquin County Only). STC Tank#39-1945-08. EXCAVATION INFORMATION: Soil was excavated by: PetroTek. Date: 622 4 Shoring was required: [ ] Yes [ X ] No Type of shoring used: N/A. Soil types encountered within the tank excavation: 0-11 ft. Silty clay with siltygravel lenses several inches thick Describe any potential contaminant pathways such as tree roots or underground utility lines discovered in the excavation: None. Describe any odors or staining found in the fill material or native soil: None. Soil Disposal Information: [ ] Not Applicable. (Soil and backfill placed back into the tank excavation and piping trench). The volume of disposed soil: N/A cubic yards. The soil was transported by: N/A The soil was disposed of as: N/A Date: N/A The concrete tank anchoring structure(s)was disposed of with the soil: [ ]Yes [ ]No [ ]Left in the Tank Excavation [ X ]N/A If no,describe how the concrete tank anchoring structure(s)was disposed of: N/A Name and address of disposal facility: N/A Additional native soil removed as part of a remedial effort: [ ]Yes [ X ]No [N/A] Uniform Hazardous Waste Manifest"TSD Facility to Generator"and LLNL Hazardous Waste Requisition copies for the soil enclosed. Volume of native soil removed: 2* cubic yards. Volume of backfill removed: 8*cubic yards. *(10 cu.yds.comprised of both soil and fill gravel) Describe how the excavated soil was handled (i.e. how and where it was stored): The soil was stockpiled on and covered with visaueen and stored in the B827A area at Site 300 The soil has not been disposed of yet Disposal methods have not yet been determined Disposal will occur when the sample analyses and review prcess has been completed Soil or backfill returned to the tank excavation or piping trench: [ ]Yes [ X ]No If yes,volume of soil returned to the excavation: N/A cubic yards Reason for the return of the soil to the tank excavation or piping trench: N/A. 2