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EXHIBIT T - DESIGNATED MINING OPERATION ENVIRONMENTAL <br />PROTECTION PLAN <br />1. General Plan <br />The Last Chance Mine is a mine that has been operating intermittently since 1973. This <br />Environmental Protection Plan is being submitted because the project is classified as a <br />Designated Mining Operation by the DRMA because "toxic or acid-forming materials will be <br />exposed or disturbed as a result of mining operations." The potential and temporary generation <br />of "toxic" materials could be from natural precipitation impacting three aspects of the mining <br />plan: (a) disturbance and storage of the waste rock; (b) disturbance and exposure of ore bearing <br />rocks at the mining site; and (c) temporary storage of ore rock at the temporary ore stockpile <br />location. The mining plan is described in Exhibit D and the reclamation in Exhibit E. Waste <br />rocks are currently exposed at the surface, and ore will be exposed for up to two weeks in ore <br />stockpile area during active operations of the mine. The SPLP leach test chemical analyses of <br />each are included in Appendix B. <br />(a) The waste rock stockpile or dump will expand from its current 0.3 acre as mining <br />operations continue to an estimated 0.68 acre. Prior to expanding the ore dump, the topsoil will <br />be removed, stockpiled, seeded and managed as shown on. Maps C-5 and C-6. Also, a <br />compacted earthen berm will be placed at the south side of the mine area to correspond to the <br />natural drainage that exists and to prevent run-on from entering the mine area. Note that most of <br />the drainage from the south is already diverted by the ditches on either side of County Road DD- <br />16. <br />(b) The ore is mined by a modified room and pillar technique and will be shipped as <br />soon as practical after being mined or stored for brief periods of time in the temporary ore <br />storage area at the east end of the permit area which is on the Morrison Salt Wash host rock and <br />above the mine workings. Two sediment traps have been constructed to collect runoff from the <br />waste rock dump with water directed into these ponds by berms. These low areas will <br />effectively function as a sediment trap and any run-off collected may be utilized for dust <br />mitigation or mining purposes. Major storm events will result in discharge over a rip rap outfall <br />and into natural drainage areas. Surface water which follows any major precipitation event will <br />be directed around the mine and that which falls directly on the mine will be contained in the pit <br />sediment trap area before continuing down the slopes as it has done for hundreds of years. <br />(c) The temporary ore stockpile will discharge down the ditches adjacent to the mine <br />haulage road and back into the Last Chance Mine providing total containment. Ore will be <br />shipped as frequently as possible and will not remain in storage for any significant time period. <br />The post-mining site will have little or no ore grade uranium minerals exposed at the surface, and <br />as shown on Map F-l, the reclaimed site will retain the general slopes and configuration of the <br />area. <br />2. Maps <br />The Last Chance Mine Plan of Operations does not include any use of toxic chemicals or acid <br />forming materials as described in Exhibit D, except for the fluids contained in vehicles on <br />Last Chance Mine - April 2009 T-1