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Surface Faciliries As shown in Phase 1 of Map C-6, drainage from the buildings (i.e., shop, dry, and administrative • offices), mine access mad, and pazking azea will be collected in a ditch along County Road 5/10 and diverted to the sediment pond via two 24-inch culverts installed under the road. The water treatment area will be gradually sloped at a grade of about 2 percent toward the sediment pond. Therefore, stormwater runoff and any spills from the treatment azea will be captured in the sediment pond. Surface drainage in the facilities azeas will remain the same through phase 2 and 3 of the project as shown on Map C-6. Ore Pad Initially, the ore pad at the site will be located within a fully bermed area that will contain all direct precipitation. As the lower pad azea is expanded to its full size, a new ore pad will be constructed of compacted waste rock. This pad will be contained within a berm and all drainage will be routed to a concrete sump. The containment berm will be approximately a foot high and will have gradually-sloped sides that will allow for haulage buggies, trucks, and loaders to access the ore stockpile. The sump will be equipped with an overflow that will drain excess water through a 6- . inch HDPE pipe into the Lined Untreated Water Pond. As shown on Map C-6, these drainage controls will remain in place through Phase 2 and 3. Waste Pile Surface drainage controls for the waste pile will be implemented in three phases during mine operations; initial (phase 1), interim (phase 2), and final (phase 3). These three phases aze illustrated on Map C-6. During the initial phase, the existing lower pad will be expanded northward to its final design stage. An initial collection ditch Gla will be constructed along the east toe of the waste pile that will cany runoff from the pile to the sediment pond. This temporary collection ditch will be utilized until such time the interim phase 2 starts. An existing East Diversion Ditch (Tc-1) along the south perimeter of the waste pile will divert surface water runoff around the pile to a small natural channel located east of the waste pile. A second Diversion Ditch (Tde-1) located along ~~ Whirlwind Mine June 07 D-27