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Cotter Corporation is submitting an Environmental Protection Plan to be incorporated <br />into the reclamation permit per DRMS rules and regulations that state all uranium mines <br />are to be classified as a Designated Mining Operation (DMO). <br />(1) Introduction <br />Exhibit U <br />Environmental Protection Plan <br />LP -21 Mine Permit Amendment <br />M -1977 -305 <br />The two surface areas determined to have the possibility to impact the surrounding <br />environment by exposing potentially toxic or acid - forming materials are: <br />A. Waste rock pile: Stormwater runoff from the waste pile could potentially leach <br />radium, uranium and other metals resulting in impacts to groundwater and/or <br />surface water. Synthetic Precipitation Leaching Procedure (SPLP) tests were <br />conducted on representative waste rock samples to determine the waste rock's <br />potential for leaching metals and radionuclides. <br />B. Ore stockpile: To ensure that temporary stockpiles of ore will not adversely <br />impact surface water or soil quality, the ore pad will be limited to a 0.25 acre area. <br />Surface drainage structures will be constructed to ensure that as little run on as <br />possible will come in contact with the ore stockpile and that all runoff from the <br />ore stockpile will be contained onsite. Ore is not expected to have any adverse <br />effect on groundwater due to the: <br />(2) Maps <br />a. Limited exposure time the ore is left on the pad, <br />b. Limited precipitation in the area combined with a high clay content in the <br />soil underlying the pad, and <br />c. Low permeability and limited downward mobility through the underlying <br />strata. <br />Maps showing locations of ore and waste rock stockpiles as well as other affected lands <br />can be found in Exhibit C - Maps. Maps showing all stormwater diversion structures can <br />be found in Appendix III - Drainage Design Plan. Maps showing drill hole data, geology <br />of the LP -21 area and soil maps are found in this exhibit. <br />O'Connor Design Group Inc. U - 4 <br />