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CLOSURE REPORT FOR UNDERGROUND STORAGE TANK 827-DlU1 with asbestos and was removed by a State of California registered asbestos abatement contractor,J.D. General and shipped to "General Industrial" (8/26/93; Manifest#92259058: Hazardous Waste Disposal Requisitions#H127243&#H127237). • The low-pressure steam 12ipin,g had been removed by sliding it out of the CMP 8/26/93).,, leaving the CMP in-place. • The fuel lines contained within the CMP were later removed by ABM Mechanical along with the boiler and its inside pumps and day tanks (9/29/93). These sections of pipe were taken off-site by ABM Mechanical(no requisition or manifest). The CMP was left in-place. • Product and vent line piTg(33.5-feet of steel)was removed by PetroTek on 3/11/94 and transported by Erickson to the Erickson facility (Manifest #92884550; Hazardous Waste Disposal Requisition#H131465). Piping sections included one 22-foot by 2-inch diameter,two 3.5-foot by 4-inch diameter,and one 4.5-foot by 2-inch diameter. • During.the more recent tank excavation of UST 827-DZU1 on 6/22/94, Inspector William Snavely visually inspected the inside of the CMP and stated that soil samples from beneath the CMP culvert were not required in order to receive"Closure." The approximately 20 foot long section of CMP remains closed in-place. The excavation end of the CMP was capped,but the building end is open. Type/diameter of aboveground piping: None. Type/diameter of underground piping: Varied from 2-inch to 4-inch. See above for description. Any piping closed in place: [ ]Yes [X]No Describe where the piping was closed in place,and how it was closed(e.g.grouted and capped): N/A 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 corroded. Holes were observed in the bottom and sides of the rusty tank. Photos of the tank were taken by Marion Heaton(3/11/94). The tank and piping were transported by: Erickson,Inc. The tank and piping were disposed of as: Non-RCRA Hazardous Waste, Solid (Empty Containers Last Containing Diesel Fuel with associated piping). Date: 3/11/94 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 the asbestos covered low-pressure steam piping,and UST 827-DlU1 and associated piping,are enclosed as Appendix C. [N/A] UST Disposition Tracking Record enclosed (San Joaquin County Only). SIC Tank#39-1945-08. EXCAVATION INFORMATION: Soil was excavated by: PetroTek. Date: 3/11/94 Shoring was required: [X] Yes [ ] No Type of shoring used: Steel shoring used on the north wall. Soil types encountered within the tank excavation: 0-5 ft. Brown Clay 5-15 ft.6 in. Brownyeclayey silt-stone 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: The soil under the west end of the tank with the hole underneath had a diesel odor. 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 2 2