T Plant 221-T Railroad Cut Closure Unit Group 41 (CUG-41)

[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 west of the north end of the 221-T Canyon Building, the 221-T Railroad Cut is a fenced-in gravel covered area surrounding railroad tracks. The outdoor storage area 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 soil underlying the unit must be clean closed. Statistical grid soil samples will be taken from the soil covering the unit.

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