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The total area to be refurbished is approximately 110,000 square feet, requiring about <br />1800 — 6 to 8 foot split -set rock bolts and several hundred square feet of cyclone wire. <br />Additionally, some areas, including intersections, would require heavier 24 -foot cable <br />type rock bolts, up to 200 total (est.). These estimates are subject to change based on <br />local factors and detailed inspection. <br />Utilities <br />A 2 -inch water line and a 4 -inch compressed air line would be installed to provide water <br />and power for bolting drills. Water would be provided by two 1,000 gallon poly tanks <br />that would be situated just inside the mine at the location labeled "Water Storage" (See <br />attached Site Plan). One or Two lhp electric water pumps would be utilized to pump <br />water from the tanks to the various work areas. Water would be trucked to the site as <br />needed to fill the tanks. An electric powered 450 scfm air compressor would be situated <br />outside the mine portal to supply air to power drills. Electric power would be provided <br />by a 480 volt, 225 amp diesel generator that would be situated outside the mine portal. A <br />self - contained 250 gallon fuel tank may be provided outside the mine to supply fuel to <br />the generator. The fuel tank would be contained within secondary spill containment <br />structure (i.e. galvanized trough or collapsible wall spill berm). Depending on space, <br />anticipated fuel usage and economics, fuel may be trucked to the site as needed rather <br />than maintaining fuel storage onsite. <br />The Red Point Mine is naturally ventilated; however Chevron would install supplemental <br />mechanical ventilation to ensure adequate ventilation for all anticipated activities in <br />accordance with MSHA regulations 30 CFR 57.5000. A 4 -foot diameter, 30hp, 30,000 <br />cfm box fan and controls would be installed at the bulkhead at the top of the ventilation <br />drift (see attached Site Plan for location). Power to the fan would be provided by the <br />aforementioned diesel generator. Electric lines would be run inside 2 -inch PVC conduit <br />and would be installed aboveground to the fan. Control will be routed to the main adit. <br />A smaller local fan with associated flexible ventilation ducts would be used as needed. <br />A small change room with showers would be provided for mine workers at a nearby well <br />pad (SKR- 598- 08 -AV) located in the valley bottom below the mine. Water for this unit <br />would be provided by vault and haul and supplied by Down Valley Septic and Drain, <br />Rifle, CO. Down Valley would also supply and maintain Port-a -Johns outside the mine <br />portal and at the well pad. <br />Mine engineering professionals have determined that a mining contractor crew of 5 -7 <br />men, working five 10 hour per day shifts, could complete the work two months or less. <br />The work proposed is tentatively scheduled to begin in late September or early October <br />with completion scheduled for mid- to late- November. Depending on the timing of <br />Contractor Agreements, procurement of materials and equipment, permitting, and <br />weather; the underground work proposed may be delayed until Spring of 2012. <br />