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iii iiiiiiiiiiiiiiii <br />999 <br />UJ~oming Fuel Compon~ <br />Golden Eagle /New Elk Mines <br />10250 Highway 12 • Weston, Colorado 81091 • Telephone (719) 868-2761 <br />Jsnusry 15, 1992 RLV~~ Y ~~ <br />JAN 17 1992 <br />Mr. Joseph Dudssh AAInBd Land <br />Reclsmation Specialist Reclamation Division <br />Mined Land Reclsmation Division <br />1313 Shermsn Street, Room 215 <br />Denver, Colorado 80203 <br />Re: New Elk Mine - Permit No. C-B1-012 <br />Technical Revisions No. 23 <br />Response to Adequscy Review <br />Desr Mr. Dudssh: <br />Wyoming Fuel Compsny has reviecaed the deficiencies relstive <br />to TR-23 listed in the Division correspondence dsted <br />November 8, 1991 snd responds ss follocas: <br />A. EAST PORTAL WATER TANKS <br />1. The Esst portsl taster tank sres will be grsveled <br />with four (~) inches minimum thickness of grsvel in <br />cress thst sre not vegetsted. <br />2. The berm encompssses portions of the down slope <br />perimeter of the canter tsnlc ares. A seasle will be <br />constructed at the top of the road. <br />3. A k fsctor of 0.18 wss derived from the SCS dsta <br />sheets from Trinidsd Colorado. Since the soils in <br />question hsve been reworked, we used s weighted sversge <br />of the k fsctors throughout the soil column. Soil <br />complexes sre composites of seversl soil types, s <br />sversge vslue wss cslculsted from each of the soils in <br />the complex. <br />1. A control prsctice fsctor of 0.11 wss used bssed on <br />an 80 to 85% ground cover with no spprecisble csnopy. <br />This vslue can be found in the SCS report 1977 <br />Procedure for Computing Sheet and Ri11 Erosion on <br />Project .treas. This ground cover will be estsblished <br />either through revegetstion and mulch or the placement <br />of grsvel in cress thst are not vegetated. <br />The vslue of 0.01 wss used in some cases due to <br />rounding to the nearest one hundredth. <br />