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area below Ditch No. 2 and route this flow to the sediment pond. The ditch <br />follows the contour until it reaches a location where the outlet will drain <br />into the pond. Ditch dimensions are similar to Ditch No. 3. <br />Collection Ditch No. 5 <br />Ditch No. 5 is located above the soil substitute stockpile in the central part <br />of the disturbed area. This ditch is designed to collect runoff above the <br />stockpile and below Ditch No. 2. The head of the ditch begins in a drainage <br />and discharges into the sediment pond after crossing a haul road. Upon <br />construction of the haul road, a 12 inch diameter culvert will be installed to <br />replace the open ditch in this location. Ditch dimensions are similar to <br />Ditch No. 3. <br />Berm <br />To route drainage from the disturbed area into the sediment pond, a berm which <br />forms the outside (east) side of Ditch No. 1 will be constructed. This berm <br />forms a part of the drainage divide for surface drainage within the disturbed <br />area. The typical cross section for the berm is shown on Figure 4, Typical <br />Berm Cross Section. <br />Small Area Exemption <br />Temporary impoundment of runoff and snow melt in the southwest corner of the <br />facilities area will be utilized while mining operations are being conducted. <br /> <br />Revised 9/12/86 <br />8 <br />