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MORRISON-KNU©SEN COMPANY,INC. <br /> November 16, 1979 <br /> Page Two <br /> _.s <br /> Regrading of the pad area is also required, The PX;stirg pond 4-1 <br /> wi1Z require enlargeTnent to meet- sediment and 10 year flood storage requir- <br /> ments. <br /> The design of sedimentation pond (Plates 5-1 and 5-2) at coal mine 5 requires <br /> new construction of two ponds and a net,;ork of ditches, berars-and swales with <br /> corrugated steel pipe to evert undisturbed area surface runoff fran the pad <br /> areas. <br /> Please call if y0u have any questions. (208) 386-6531. - <br /> Sincerely, <br /> J <br /> Ellery H. Wilson, P.E. <br /> Staff Engineer <br /> Geological Engineer <br /> EHW/gk - <br /> • Attachr4nts <br /> cc: Doug Bowman <br /> 41 <br />