Sincerely,

Dear Mr. Chairman: Enclosed are the compliance evaluation and the disposal authorization for Solid Waste Storage Area 6 (SWSA-6) low-level waste disposal in Tumulus I, Tumulus II, and the Interim Waste Management Facility (IWMF) at the Oak Ridge Reservation (ORR). The Low-Level Waste Disposal Facility Federal Review Group (LFRG) conducted their review of the performance assessment and the composite analysis and recommended that the Department of Energy authorize the-continued operation of the IWMF in SWSA-6 subject to the conditions in the disposal authorization statement. The Department accepted the LFRG recommendation and signed the disposal authorization statement for the specified low-level waste disposal facilities in SWSA-6 at ORR. The Department has completed the following actions related to commitment