T Plant 271-T Cage Closure Unit Group 29 (CUG-29)

[TSD ID#: TS-2-7] Located in Hanford's 200 West Area, T Plant was the first large-scale plutonium separation facility. It performed separations from 1945 to 1956 and is now being used for storage, waste treatment and repackaging activities. Located on the northwest side of the 221-T Canyon Building, and immediately adjacent to the north side of the 271-T Building, the 271-T Cage is an elevated concrete slab enclosed by a wire fencing cage. The 271-T Cage was used to store numerous waste containers over time. The unit was not authorized for permitted storage and is closing. The waste containers have all been removed, but the concrete slab and underlying soil must be clean closed. The concrete slab will be decontaminated and focused soil samples will be taken underneath and to the side of the front edge of the concrete slab.

Enforceable Permit:

Issued in accordance with the applicable provisions of the Hazardous Waste Management Act, Chapter 70A.300 Revised Code of Washington (RCW), and the regulations promulgated there under in Chapter 173‑303 Washington Administrative Code (WAC).

Permit Number: WA7890008967