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1 <br /> <br /> <br />1 <br /> <br />1 <br />1 <br />1 <br /> <br /> <br />1 <br />1 <br /> <br />1 <br /> <br /> <br />Exhibit C - Site Description - Water Information <br />Runoff on the site occurs as overland flow, The volume of runoff <br />intercepted within the area to be mined has not been historically <br />significant. Drainage to the outside of the mine bench will be controlled <br />by periodic waterbars and small ditches, as necessary, diverting water to <br />the adjacent slopes, and by riprap or bales of hay where the runoff is <br />directed in order to minimize incision and sedimentation potential. The <br />overall effect of runoff is not expected to be problemsome since the <br />catchment area and slope lengths are limited, which in turn affects the <br />capacity of the resultant runoff. Evidence from older existing fill slopes <br />on site provides an indication of expected slope processes. Erosion of the <br />steep (1.3:1 to 1.5:1) outslopes of the existing old overburden dumps <br />around the site has not been pronounced and has not produced gullying or <br />rilling to any extent. These slopes have existed for a number of decades. <br />The main access road, and small historic roads, traverse the slope <br />below the existing mine workings. The road can be effectively used to <br />capture and direct runoff. Ditches, waterbars and culverts will be <br />constructed along the access road as needed to control surface flow. <br />Concentrated runoff will be routed along the access road to a temporary <br />sediment trap or shallow basin to be located on the east side of the site. <br />This sediment trap will remain on site until vegetation has been <br />established with sufficient cover to prevent accelerated erosion. <br />No other surface watercourses are present in the area to be mined, and <br />ground water will not be intercepted. No water will be used in the <br />' operation and no water, beyond atmospheric moisture, will be required in <br /> reclamation. Since there will be no discharge, a NPDES permit is <br />1 <br /> <br />