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• <br />Cow•u~nr~ <br />NvorO WOgi <br />Chories F. Leo f, P. E. <br />MAI LI rJG ADDRESS. <br />L412 EAST MULBEAAY - 173 <br />FORT COLLINS, COLORADO 80521 <br />T[l[~MOwf <br />1 ]O] 1 t ] 1.00!0 <br />OFFICE: <br />311 SOUTH MELDRUM <br />FORT COLLINS, COLORADO 80521 <br />February 27, 1976 <br /> <br />ttr. Jerry tlcPhee <br />Westmoreland Coal <br />P.O. Box 7607 <br />Colorado Springs, <br />Dear Jerry: <br />Company <br />Co]orado 80933 <br />As requested by EPP., I have performed another analysis of required settlino <br />pond storage capacity at Orchard Valley Cline. This analysis is based on the <br />assumption that storm runoff from all disturbed areas would be routed throuclh <br />the settling ponds. <br />The four ponds originally proposed, plus a temporary pond just upstream. from <br />the starter embankment should be adequate to contain sediment from the 10-year, <br />24-hour storm event. The technical besis for this conclusion is presented <br />in the attached report. <br />I will be glad to discuss the report with you at your earliest convenience. <br />S~inc~erely yours, _ <br />G '~~~P-' <br />Charles F. Leaf <br />CFL/jdl <br />'r. S. Appendix II and III of this report can Lz :Duna ~~ <br />nN~endices II and V-A of Iry letter dated Fcl,~•uary 19, i9~c. <br /> <br />