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to exposure or erosion during or after reclamation. All other solid waste (including, but not <br />limited to, tires, hoses, and plastic sheeting) will be disposed of in a roll-off container. The <br />container will be emptied and contents disposed of on a regulaz basis by a mine contractor. All <br />solid waste will be properly disposed of in accordance to state and local regulations. <br />Vent Holes -Denison plans to install five vent holes, T-2 through T-6, between 2007 and 2010. <br />For the purposes of this report, the surface disturbance associated with these vent holes, in <br />conjunction with the expansion of the surface facilities affected area, is referred to as the <br />proposed surface disturbance. The approximate locations of the proposed vent holes will be in <br />the expected areas of mine lateral and room development as indicated on Figure C-3. The exact <br />locations of the proposed vent holes are dependent on the configuration of the future mine <br />workings and future air quality in the mine and, therefore, cannot be determined at this time. <br />When additional ventilation to the mine workings is required, exact locations will be determined <br />and provided to the BLM and DRMS. In general; however, proposed vent holes will be located <br />as close as practicable to existing roads, to minimize additional surface disturbance. Proposed <br />access roads to these vent holes are shown on Figure C-3. The access roads and vent holes will <br />be reclaimed following the closure of the Topaz Mine. <br />Proposed vent holes are expected to be approximately 6 feet in diameter, similar to vent hole T-I . <br />The surface disturbance associated with proposed vent holes alone will be minimal <br />(approximately ~/a acre). The total surface disturbance associated with the vent hole roads will <br />vary based on the proximity of each vent hole to existing roads. Estimated surface disturbance <br />areas for all of the proposed vent hole access roads is estimated to total approximately 2.75 acres, <br />as shown in Table D-1. A metal diffuser will be installed above the proposed opening. The <br />diffusers will be about 4 to 5 feet tall, screened on top to prevent entry, and painted a "Military <br />Olive" color to blend in with the surroundings. <br />Exploration -Exploration drilling will take place concurrent with mine operation. It is <br />anticipated that approximately 50 surface holes will be drilled annually, creating 2 to 3 acres of <br />surface disturbance. Areas disturbed by drilling will be reclaimed immediately following drilling. <br />All exploration will be conducted under astate-wide prospecting bond compliant with the <br />Colorado Mined Land Reclamation Act. Denison submitted astate-wide prospecting bond to <br />DRMS and the BLM on April 25, 2007. <br />5-23-2007 Exhibi[ D Mining Plan D-10 <br />