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<br />There aze no improvements or new roads envisioned for access to the affected azea. <br />Access roads on site already exist from prior operations. These roads lie exclusively on the <br />waste marble piles and aze shown on the Site Sketch. No significant new roads are envisioned, <br />although existing roads may be relocated slightly or extended as waste is added to the piles. No <br />drainage or runoffconveyance is envisioned as the borders of the road base are on the marble <br />waste piles. The waste piles aze quite porous so even dwing heavy rainfall or spring snowmelt <br />periods, water drains through the piles. <br />Potable water will be brought to the sight as required. Sanitary waste facilities will be <br />portable toilets and will not require water. No change room facilities will be located on site and <br />no related water use or discharge is planned. <br />There has been no significant effect on the quantity and quality of ground water or <br />swface water from CYMC's past operations, and none is anticipated with Sierra's operations. <br />The diesel fuel tank is placed within a heavy, membrane lined berm structure whose volume <br />exceeds the capacity of the tank. Operating practice will include keeping the discharge valve of <br />the main tank closed and locked except when refueling equipment or the generator trailer's I00- <br />gallonday tank. All equipment maintenance activities that involve the transfer of oils and <br />lubricants will take place underground. Maintenance activities will generate waste oil and other <br />fluids that will be transported offsite and disposed of in an approved manner. Other refuse will <br />be transported off site and disposed of in an approved manner. The quarry operation generates <br />no acid or toxic materials. Sierra anticipates no processing on site except for marble cutting or <br />polishing operations. Such processing operations will occur underground and involve no process <br />chemicals. <br />After mining is complete, large underground openings aze expected to fill with water, <br />then overflow at the lowest quarry portal dwing high runoffperiods. Since the quarry does not <br />generate large volumes of water, and all runoff from the quarry area feeds into Yule Creek, no <br />significant impacts are anticipated on the hydrologic balance of the area. Once mining is <br />complete, drainage from the quarry will commence when water has filled the existing workings <br />up to the lowest possible exit elevation. This is anticipated to be the main quarry portal. Water <br />that flows from this entry will flow into the existing stormwater ditch and find its way into the <br />Quarry Town azea described above. A 6-inch drainage pipe will be placed in the tunnel before it <br />is backfilled so that water will drain and not allow a buildup of pressure behind the backfill in the <br />tunnel. The pipe will be placed with a slight slope to the surface so that ice will not forni in the <br />pipe to block it. <br />Upon reclamation only minimal fertilization may be required dwing establishment of <br />vegetation, and then only where soil tests indicate nutrient deficiencies for the plant species to be <br />established. Ongoing fertilization is not wnsidered appropriate for creating self-sustaining <br />vegetative growth. No more than one or two fertilizer applications would, in any case, be <br />expected to be necessary. <br />3 <br />