Laserfiche WebLink
<br />002G38 <br /> <br />I. EXECUTIVE SUMMARY <br /> <br />This Completion Report evaluates the completeness of surface remedial action of the inactive <br /> <br /> <br />Durango, Colorado tailings pile and the raffinate ponds area. The final Site Surveillance and <br /> <br /> <br />Maintenance Plan will address criteria for corrective action if the disposal cell does not perform <br /> <br /> <br />in accordance with the design specifications, including compliance with groundwater protection <br /> <br /> <br />provision Subpart A of 40 CFR 192. <br /> <br />The purpose of this completion report is to provide evidence that the final Durango, Colorado <br /> <br /> <br />Processing and Disposal Site property conditions are in accordance with the approved design, <br /> <br /> <br />and thatall Environmental Protection Agency (EPA) standards have been satisfied. Included as <br /> <br /> <br />appendices in order to support the stated conclusions are the design basis memorandums, design <br /> <br /> <br />calculations, as-built drawings and specifications, a summary of geotechnical testing performed, <br /> <br /> <br />Jpplicable permits, a summary of audits conducted during construction, supplemental standards <br /> <br /> <br />applied, photographs of quality control activities, a description of the methodology utiliz,ed to <br /> <br /> <br />obtain the radiological measurements which were used to verify the remedial actions, and the <br /> <br /> <br />pre-remedial action and post-remedial action radiological measurements. <br /> <br />The principal objectives of the remedial action are to isolate and stabilize the tailings and other <br /> <br /> <br />radiologically contaminated materials so as to prevent misuse by man and dispersal by natural <br /> <br /> <br />forces, such as wind, rain and flood waters, to reduce radon emissions from the tailing pile, and <br /> <br /> <br />the elimination of significant exposure to gamma radiation from the tailings pile. The controls <br /> <br /> <br />are designed to be effective for 1,000 years where reasonably achievable, with a minimum <br /> <br /> <br />performance period of 200 years. <br /> <br />_. _ ..._^ ....,..,..'" D~.<)_aro.l' 1'<w:F'/: SUMM"RY "000 1'''lfn <br /> <br />1 <br />