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Seismic/Anchoring: Seismic/dynamic/hydrostatic load calculations are provided as Attachment 1. The UL licensed double wall AST, was tested in conformance with the Steel Tank Institute's 5th ed. protocol. Seismic/Anchoring Findings: The tank as designed, and operated, and the containment area ( secondary shell) are seismically sound. Safety factor against movement or seismic overturning exceeds 2.0 Initials: Leak Test: 191(g)(9)/192(k)(10) The secondary containment void was examined for leakage from the primary shell as well as the exterior of the tank. No leakage was apparent. Integrity Testing Findings: Based on the above noted integrity test and results obtained from that test, the tank has sufficient integrity for its intended use. Initials: Please reference attachment 1 for dimensions and photos of tank. Design of Containment Area 66264.193(e)(1)(D) and 66264.193(b)(1 & 3) The AST is a double walled steel tank was manufactured by Hoover Manufacturing in early 1990's. The manufacturing and servicing of this tank design was purchased by Containment Solutions in mid 1990's. Secondary containment is provided by the integral exterior 10 gage welded shell. Leak detection is provided by monthly visual observation of entirely visible exterior shell and secondary containment volume. Visual Inspection of Containment Area: 66264.193(e)(1)(C) The tank is located on a Portland cement pad with minimal contained drainage to a central readily visible curbed swale. All materials are compatible with the contained waste oil. AST's integral secondary containment is sufficient. Minor leakage from drummed hazardous waste i.e. drained oil filters and floor sweep would be captured. Merit of additional capacity from curbing versus increased risk of injury when handling stored drums must be considered. Imperial Truck Wash and Repair Waste Oil AST pg.3 of4