This amended closure/post-closure plan describes the proposed closure approach for the former hazardous waste storage area (HWSA) at Building 560, Rickenbacker Air National Guard Base (ANGB), Ohio. The former HWSA is located at the edge of the shop area in the northern section of the base. The HWSA was a permitted storage facility that received wastes generated during base activities from 1983 to 1986. Wastes stored in the HWSA consisted primarily of acids and spent desiccants. Waste was stored in small containers placed on pallets inside Building 560 and in larger, 55-gallon drums outside the building (within the fenced yard). Additionally, 15 underground storage tanks (USTs) were previously located at Building 560/HWSA. These USTs were used for the storage of waste fuel, waste oils, and deicing fluid. The Air Force Base Conversion Agency (AFBCA) has been granted "No Further Response Action Plan" (NFRAP) status for the tanks. Residual contamination in soil and groundwater is addressed as part of the closure approach presented in this closure/post- closure plan. This amended closure/post-closure plan was prepared in compliance with the Ohio Administrative Code (OAC) Chapter 3745 Part 66 and the Code of Federal Regulations (CFR), Title 40 Part 265, Subpart G.

Special edition of the Federal Register, containing a codification of documents of general applicability and future effect ... with ancillaries.