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CLOSURE REPORT FOR UNDERGROUND STORAGE TANKS 879-GlU1&879-G2U1 <br /> Any piping closed in place: [ ]Yes [X]No <br /> Describe where the piping was closed in place,and how it was closed(e.g.grouted and capped): <br /> N/A. The pining was removed. <br /> Underground concrete tank anchoring structure(s)were present: [ ]Yes [X]No <br /> Size and location of the concrete tank anchoring structure(s): N/A <br /> Description of tank and piping condition (corrosion, pitting, holes, etc.): UST 879-GlUl was <br /> rusty in some spots. UST 879-G2U1 showed some areas of deterioration of the fiberglass <br /> exterior. The pig was in good condition. Photographs of the tank were taken by Marion <br /> Heaton 3/28/94). <br /> The tanks and piping were transported by: Erickson,Inc. <br /> The tanks and piping were disposed of as: Non-RCRA Hazardous Waste, Solid (Empty <br /> Containers Last Containing Diesel Fuel*with associated piping). Date: 3/29/94 <br /> *Note: LLNL Hazardous Waste Disosb al Requisitions correctly indicated"unleaded fuel." <br /> Name and address of disposal facility: Erickson Inc. (Hauler Registration No. 0019), <br /> 255 Parr Blvd.Richmond,CA 94801 (510-235-1393). <br /> [X] LLNL Hazardous Waste Disposal Requisitions and Uniform Hazardous Waste Manifests <br /> "TSD Facility to Generator"copy for the tanks and piping are enclosed as Appendix C. <br /> [N/A] UST Disposition Tracking Record enclosed (San Joaquin County Only). <br /> STC Tank#39-1945-19(UST 879-G1U1)and SIC Tank#39-1945-18(UST 879-G2Ul). <br /> EXCAVATION INFORMATION: <br /> Soil was excavated by: PetroTek. Date: 3/17&28/94 <br /> Shoring was required: [ ] Yes [X] No <br /> Type of shoring used: N/A. <br /> Soil types encountered within the tank excavation: <br /> 0- 4 in. Asphalt <br /> 4 -24 in. Gravelly,soil fill material <br /> 24- 222 in. Clayey soil with some gravel(excavation sidewalls) <br /> Describe any potential contaminant pathways such as tree roots or underground utility lines <br /> discovered in the excavation: N/A. <br /> Describe any odors or staining found in the fill material or native soil: N/A. <br /> Soil Disposal Information: <br /> [ ] Not Applicable. (Soil and backfill placed back into the tank excavation and piping trench). <br /> The volume of disposed soil: N/A cubic yards. <br /> The soil was transported by: N/A. <br /> The soil was disposed of as: N/A. Date: N/A <br /> The concrete tank anchoring structure(s)was disposed of with the soil: <br /> [ <br /> ]Yes, [ ]No [ ]Left in the Tank Excavation [X]N/A <br /> If no,describe how the concrete tank anchoring structure(s)was disposed of: N/A. <br /> Name and address of disposal facility: N/A <br /> Additional native soil removed as part of a remedial effort: [ ]Yes [X]No <br /> [N/A] LLNL Hazardous Waste Requisition and Uniform Hazardous Waste Manifest"TSD <br /> Facility to Generator"copy for the soil enclosed. <br /> Volume of native soil removed: N/A cubic yards. <br /> Volume of backfill removed: 150 cubic yards. <br /> Describe how the excavated soil was handled(i.e.how and where it was stored): The excavated <br /> materials were stockpiled on and covered with visaueenolyeth ly ene) and stored by south <br /> station 46&47 at Site 300 <br /> Soil or backfill returned to the tank excavation or piping trench: [ ]Yes [X]No <br /> If yes,volume of soil returned to the excavation: N/A cubic yards <br /> Reason for the return of the soil to the tank excavation or piping trench: N/A. <br /> 2 <br />