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r <br />• <br />Mr. Dan Matthews <br />March 30, 1983 <br />Page 4 <br />As shown, the runoff from a 10-year, 29-hour event will <br />be contained in the ditch around the perimeter of the <br />Slot Storage. <br />NOTE: Precipitation and <br />obtained from the <br />Station. Also, a <br />80, or 27.78, was <br />Hydraulics Calcul, <br />Page 5. <br />Evaporation Rates were <br />Rangely Monitoring <br />runoff curve number of <br />used as per the Permit <br />stion Sheet H(D) 1-8, <br />In conjunction with the pond analysis, Western Fuels <br />requests a small area exemption for the contributing <br />area east of the Slot Storage, as shown in Drawing <br />#2-83(3). <br />Western Fuels-Utah, Inc. hopes the above information, <br />along with the March 8, 1983, Minor Revision Request - <br />Temporary Coal Stockpile, supplies the needed information <br />for an acceptable sediment control plan at the Slot <br />Storage Area, as in Recommendation 018-83-2 of the <br />March 3, 1983 Inspection Report. If you have any <br />questions, please feel free to contact me. <br />Sincerely, <br />Steve Magnuson <br />Environmental Engineer <br />SM/gh <br />cc: Will Wright <br />Tom Caruso <br />• <br />