2011-07-26_REVISION - M1984014 - Laserfiche WebLink

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Mr. Steve Tarlton July 17, 2011 Page two Please note: (a) density gages currently stored in the yellowcake storage building will be sent offsite for disposal at an appropriate facility; and (b) Cotter will relocate administrative offices outside the restricted area. 3. Cotter will excavate contaminated soils to the interim ALARA goal of 60 AR/hour at a height of one meter for the following: • Footprint of the 1979 Mill; • Soils in the drainage area of the Old Pond Area Survey (SCS) dam; • Boiler /zirconium kiln /demonstration plant area; • Area east of the railroad tracks to OPA; • Ore pads; • OPA area; • Any soils outside of the restricted area, but within risk assessment is not an option. 4. The following buildings and structures will not circumstances warrant their removal: • Guard shack; • Laboratory and change house (incl. leach fields); • Main substation; • All railroad structures (tracks, trestle and foundations); and • Maintenance shop. Radioactive Materials License Impoundments ( "OPA ") to the Soil Conservation Cotter's property boundary, where be demolished until remedial Subject to CDPHE review and approval, Cotter intends to maintain its Radioactive Materials License for the purpose of processing Mount Taylor orc. The use of this license will be maintained via the Timeliness in Decommissioning process specified by 6 CCR 1007 -1 3.16. Cotter intends to retain the use of the surface of the Secondary Impoundment ( "SI ") for heap leaching in the future. The approximate five-acre arca will be closed with the first layer of random fill placed on top. Settlement monitoring stations will be placed in accordance with the Reclamation Plan. The SI dewatering sump will continue to be pumped into the Primary Impoundment ( "PI "). The PI will continue as a repository for demolition debris and contaminated soils. An area will be left open to receive the remaining buildings and structures detailed above. The liner in the southern portion of the P1 will remain in place until final closure at which time it will be placed in the configuration as shown in the Reclamation Plan. The P1 dewatering sump will continue pumping into the PI pool until a new evaporation cell is constructed.