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TANK 614-D1 U1 CLOSURE Scope of Work• 1. Empty any liquid from the tank and lines, if applicable,with approved recycler. 2. Provide venting of fumes from the tank and lines, prevent static discharge. 3. Remove concrete and excavate overburden stockpile per LLNL Field Inspector. Do not dispose of overburden. 4. Disconnect the fill spout, supply return, vent and any other pipelines from the tank. 5. Remove and cap pipe lines. NOTE: The tank venting must be maintained. Drill a 1/8"hold in one cap on the tank. 6. Unbolt tank from concrete pad (if applicable). 7. Lift and remove the tank. The tank shall be scrapped by a certified scrapper. 8. Remove the concrete pad below the tank (if applicable). 9. Test for contamination per the Closure Plan LLNL to provide approval and location for soil. 10. Backfill with excavated or engineered/select soil, compact in 8"layers at 95% relative compaction. 11. Finished surface to match existing. 12. Protect all existing structures and utilities against damage during construction. Repair or replace all damaged structures, utilities and landscaping. General Notes: A. Construction personnel shall follow all appropriate safety rules and regulations as associated with work on fuel tank systems. See the "Closure Plan"and reference API 1604"Removal of Petroleum UST". All required procedures and regulatory requirements for tank closure shall be followed and coordinated with the Tank Assessments and Guidance Group(TAGG) of the Environmental Protection Department. B. Method of construction will be by Plant Engineering- "Shops". C. For reference only see Sketch SKM93-814-002A. FILE WWE:SM-09.OWG �,„ JENNIN'GS WE 5 19 93 �® Lawrence Livermore National Laboratory Sh NF _��Q--- 19 93 Livermore, CA 94550 APMW. 0 TNK-92-012 scm, NO SCALE SKETCH N0. SKM93-814-001 A L