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<br />APPENDIX- A <br />Attached are work sheets that are obtained as part of Soil Conservation Service, <br />Engineering Division, Technical Release 55, The sheets were used to make <br />calculations of estimates of the runoff of a 10-yr 24-hr storm event from the two <br />subbasins above the planned waste rock dump. A map is included to show the <br />subbasins and the berm segments to be constructed to divert the flows of the two <br />subbasins azound the waste rock pile. Since the outflow of the subbasins intersect the <br />berms at sharp angles, the intersection areas of the berms will be armored with riprap. <br />The channels created by the berms will be approximately 8 ft wide by at least 2 ft <br />deep, which will be capable of handling the calculated estimated peak discharges of: <br />Subbasin 1=0.56 cfs <br />Subbasin 2=1.36 cfs <br /> <br />LJ <br />