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10/15/13 State.co.us Executive Branch Mail - Fwd: Southfield Mine: MWNW & Pond 4 <br />From the Findings of Compliance and Proposed Decision for a Phase I Bond Release and <br />Bond Reduction SL -02 for Energy Fuels Coal, Inc. Southfield Mine Permit No. C -81 -014 <br />page 29 <br />"Sediment Pond 4: Sediment Pond 4 is designed and constructed to treat runoff from a <br />10 year 124 hour storm event and safely pass the runoff from a 25 year 124 hour storm <br />event as required by the Rules. Pond 4 receives the runoff from the refuse pile, the <br />borrow area, the topsoil stockpile and the subsoil stockpile. With the approval of <br />Technical Revision 34 (approved on October 28, 2002, EFCI changed the primary spillway <br />design to be self - deqatering. The Division reviewed the engineering designs and SEDCAD <br />models and determined that the revised spillway design criteria had been met. EFCI <br />submitted engineer certified as -built drawings for Pond 4 as required by the Rules. " <br />Our opinion and request for Pond 4: <br />Because Pond 4 is essential for the runoff from the the refuse pile, the <br />borrow area, the topsoil stockpile and the borrow area, it is important that <br />in the case of a potential catastrophic runoff event ie 10 year /24 hour storm <br />and /or a 25 year /24 hour storm event, we keep Pond 4 as a permanent <br />pond to safely pass the runoff in future years. <br />Also, there were previously naturally occurring low -lying areas of land on our property <br />which provided water collection areas as a natural environment for rangeland and <br />wildlife habitat. <br />Below are the emails exchanged between myself, Janet Binns and George Patterson <br />regarding our position to Pond 4: <br />Paula: <br />Janet Binns corrected me (see message) about all signatures being on one letter. <br />stand corrected. <br />George P <br />---- - - - - -- Forwarded message ---- - - - - -- <br />From: Binns - DNR, Janet <janet.binns @state.co.us> <br />https: / /mail.g oog le.conVmai I /u /0 / ?ui =2 &i Ire29129fcb5 &view = pt &search =i nbox&th =141 bcef852l d94a5 17/20 <br />