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Fa OENISONI)„ <br />MINES <br />June 5, 2009 <br />Bob Oswald <br />.Cp Division of Reclamation Mining & Safety <br />692 County Road, Unit A2 <br />Durango, Colorado 81301 <br />01 <br />?ety <br />D; M and <br />Denison Mines (USA) Corp. 2 <br />105017th Street, Suite 950 77? <br />Denver, CO 80265 <br />USA <br />Tel : 303 628-7798 <br />Fax : 303 389-4125 <br />T?4ww.deni sonmi nes.com <br /> <br />Rem%V?? <br />,JAN W <br />? <br />0620 <br />09 <br />_.I(, <br />M?4i4g 1)CI clQ/27, <br />Safe °17, <br />k? <br />? <br />Dear Bob: <br />? V/ %/ <br />M- <br />Re: Van 4 Environmental Protection Plan Submittal M-1997-032 <br />Denison Mines (USA) Corp. ("Denison") is please to provide this Environmental Protection Plan (EPP) <br />for the Denison Van 4 Mine. The Van 4 Mine is currently permitted as limited impact operations (110 <br />permits). <br />On February 8, 2008, Denison received Notice of Determination of Designation Mining Operation <br />(DMO) from the State of Colorado Division of Reclamation, Mining and Safety ("the Division") for the <br />Van 4 Mine (Permit M-1997-032) <br />By letter dated March 7, 2008, Denison notified the Division under Rule 7.2.3(1) of the Colorado Mineral <br />Rules and Regulations for Hard Rock, Metal and Designated Mining Operations, that it was not <br />challenging this determination, but that it would proceed to prepare an EPP for the mine in accordance <br />with Rule 7.2.3(2). In those letters, Denison also advised the Division that it believed that in the course of <br />preparing such EPP it may be able to demonstrate that the mine should be considered exempt from the <br />EPP requirements under Rule 1.1(14)(e) or Rule 7.2.6(1). <br />On February 8, 2008, Denison received the formal notice of determination of DMO status from <br />the Division. Due to the complexity and anticipated time necessary for preparing an EPP, <br />Denison requested that the due date be set for 365 days after receipt of the Division's notice. <br />The extended timeframe was approved, and the due date for the EPP was set for February 7, <br />2009. <br />On June 6, 2008, the Division sent a letter to Denison that described the implementation of new <br />legislation (HB 1161) which changed the definition of a DMO, and stated that all uranium <br />operations were now defined as DMOs. The DMO requirements cited in that letter may have