Conceptual Site Model - Argonne National Laboratory

WVDP Phase 1 CSAPAPPENDIX EWMA 5 PRE-REMEDIATION DATA COLLECTIONE.1 BackgroundWaste Management Area 5 (WMA 5) is approximately 19 acres in size and contains variousbuildings, building pads from buildings previously removed, paved surfaces, open grassland andwetlands, and hardstands historically used for storage (see Figures E.1 and E.2 for maps).Descriptions of the various features of WMA 5 follow, and are taken from the Phase 1 DP,Section 3.1.2:Remote-Handled Waste Facility. The Remote-Handled Waste Facility is located in the westernportion of WMA 5. It is a metal-sided, steel-frame building that includes a Receiving Area, aBuffer Cell, a Work Cell, a Waste Packaging Area, an Operating Aisle, and a Load-Out /TruckBay. The Receiving Area includes a 20-ton bridge crane that also provides access into theadjacent Buffer Cell. The Buffer Cell is an air lock between the Receiving Area and thecontaminated Work Cell. The Work Cell is the primary work area, with provisions for fullyremote handling, surveying, segmenting, decontaminating, and repackaging operations. Thisshielded space is 55 feet by 22 feet by 26 feet high, and is served by a 30-ton bridge crane. Anyspent decontamination solutions generated during operations were transferred to below-gradewastewater storage tanks located in a vault below the building for management before treatment.These tanks and vault will be removed during Phase 1 decommissioning. The Waste PackagingArea includes capability to load both waste drums and boxes. The Operating Aisle houses twowaste processing and packaging work stations and one waste sampling transfer work station.Each work station includes a shield window in the shield wall, and controllers for remotelyoperating facility equipment. This facility and its concrete floor slab will be removed duringPhase 1 decommissioning.Lag Storage Building Slab. The Lag Storage Building was a sheet metal structure built in 1984to store low level waste. It was supported by a clear span frame and anchored to a 140 foot longby 60 foot wide concrete slab foundation. The slab surface was coated with an acid-resistant, two-Rev. 1 E-1