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<br />chain link fencing in the quarry portals will be replaced with permanent fencing as described in <br />Exhibit D -Reclamation Plan. <br />(fl Surface Disturbance: The area disturbed from past operations within the affected <br />area is estimated at approximately 3.7 acres. This azea includes the existing waste piles, the <br />entries, and the access road to the south of Entry No. 3 leading to the azea directly to the east of <br />the No. 5 Prospect Tunnel. For an operation lasting 20 years at an average envisioned <br />production rate of 10,000 tons per year, a maximum of approximately 200,000 cubic yazds of <br />waste rock rngy be generated and added to the waste piles. The surface area added to the <br />existing waste piles is estimated at approximately three acres. The approximate fmal limits of <br />the waste piles is shown on Exhibit E -Reclamation Plan Map, and the existing and final <br />topography is shown in Exhibit D -Reclamation Plan (Paragraph "b"). <br />(¢) Roads: There aze no improvements or new roads envisioned for access to the <br />affected azea. Access is via 3 miles of public road fiom the Town of Marble, then via 1800 feet <br />of private road on Sierra controlled private property to the northern edge of the affected azea. <br />Access roads on site already exist from prior operations. These roads lie exclusively on the <br />waste marble piles and are shown on Exhibit E -Mining Plan Map. No significant new roads are <br />envisioned, although existing roads may be relocated slightly or extended as waste is added to <br />the piles. During the summer of 1998, CYMC constructed a new road around the east side of the <br />south waste pile area. The surface of the road was not adequately stabilized before the winter of <br />1998/1999. Sierra plans to stabilize the surface of this road with compaction from tratl'ic, <br />crushed rock, or road base material. <br />(h) Water: The primary non-potable water use at the quarry is for cooling, dust control, <br />and saw cuttings flushing of the diamond wire saws, chain saws, and drills used in the stone <br />cutting operations. Each saw (there aze 6 planned) requires a steady flow of 5 to 10 gallons per <br />minute. The continuous circulation rate is estimated at a maximum of 30 gallons per minute. <br />This rate is not consumptive since the water is reused from settling ponds and sumps in the <br />quarry. Water from seepage into the quarry from surrounding formations is the source of this <br />circulating, non-potable water requirement. Past experience by CYMC indicates the quany <br />generates excess water in the sumps during spring runoffperiods. At these times, some water <br />needs to be discharged (see paragraph "e" above). Shown on the following page is a copy of <br />Sierra's dischazge permit with the Colorado Department of Health. The discharge point <br />approved in this permit is shown on Exhibit E -Mining Plan Map and labeled as "Outfall 001." <br />An initial sample of dischazge water was taken 5/24/99. It showed the discharge water has ~H <br />of 7.72, total suspended solids of 21 mg/l, and total dissolved solids of 137 mg/l. These results <br />are well within acceptable limits established by the Colorado Department of Health. Potable <br />water will be brought to the sight as required. Sanitary waste facilities will be portable toilets <br />17 <br />