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w A <br /> TANK 830"D1 U1 CLOSURE <br /> Scone of Work• <br /> 1. Empty any liquid from the tank and lines, if applicable,with approved recycler. <br /> 2. Provide venting of fumes from the tank and lines, prevent static discharge. <br /> 3. Remove concrete and excavate overburden stockpile per LLNL Field Inspector. <br /> Do not dispose of overburden. <br /> 4. Disconnect the fill spout, supply return, vent and any other pipelines from the <br /> tank. <br /> 5. Remove and cap pipelines. NOTE: The tank venting must be maintained. Drill a <br /> 1/8"hole in one cap on the tank. <br /> 6. Piping within and beneath concrete will be drained, capped and closed in place. <br /> All other accessible piping will be removed. <br /> 7. Unbolt tank from concrete pad (if applicable). <br /> 8. Lift and remove the tank. The tank shall be scrapped by a certified scrapper. <br /> 9. Remove the concrete pad below the tank (f applicable). <br /> 10. Test for contamination per the Closure Plan. LLNL to provide approval and <br /> location for soil. <br /> 11. Backfill with excavated or engineered/select soil,compact in 8"layers at 95% <br /> relative compaction. <br /> 12. Finished surface to match existing. <br /> 13. Protect all existing structures and utilities against damage during construction. <br /> Repair or replace all damaged structures, utilities and landscaping. <br /> General Notes: <br /> A. Construction personnel shall follow all appropriate safety rules and regulations as <br /> associated with work on fuel tank systems. See the"Closure Plan"and <br /> reference API 1604"Removal of Petroleum UST". All required procedures and <br /> regulatory requirements for tank closure shall be followed and coordinated with <br /> the Tank Assessments and Guidance Group(TAGG) of the Environmental <br /> Protection Department. <br /> B. Method of construction will be by Plant Engineering- "Strop". <br /> C. For reference only see Sketch SKM93-830-002A. <br /> RLE WWE:SM-09.0WC <br /> JENNINGS ,E 5 19 93Lawrence Livermore National Laboratory <br /> oEsSHONEELD _ �",E 5/19Z93 Livermore, CA 94550 <br /> N" J ' -1U1AEv no.0 <br /> pm No. TNK-92-012 scAu NO SCALE SKETCH N0. SKM93-830-001 A <br />