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. - oo. o.< ..~ ~ rr<urq ~IVt,. n'tDl tLK M1Nt y/b y1ybCJ50 p. 1 <br />• • III IIIIIIIIIIIII III <br />Mountain Coal Company ' ` <br />West Elk Mine <br />Post OtRce Box 591 <br />Somerset, Cdarado 81434 " <br />Telephone 970 929.5015 <br />Fax 970 929.5595 <br />July 1'7, 1997 <br />1ti7~ <br /> <br />ti <br />Mr. Michael P. Botilay <br />DMSION OF MINERALS AND GEOLOGY <br />Office of Mined Land Rec4uaation <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Re: West Elk Mine, Permit No. C-80-007, Sylvester Gulch Slope Stability Aetion Plan <br />Dear Mike: <br />Per your and Jim Pendleton's request, the following is Mountain Coal Company's (MCC) slope stability <br />action plan for the Sylvester Gulch facilities currntly tmdtt consatction. The Lut two items were added <br />as advised by you and lim during our telephone conversation yesterday afternoon regarding the proposed <br />P~• <br />Aaron Schedule <br />Geotechnical evaluation of failed fill by consulants. Field surveys wmpleted 7/7 - 7/11. <br />wo ' ent consultants retained. rtt Duo 7/] 7 <br />]nstall surface survey monumenu - 3 lines at failed fill and Completed 7/12 <br />l line at substation <br />install inclinometers az failed fill Tae inclinometer ceanpleted 7/l2 <br /> Fill crest inclinometer scheduled for <br /> 7nl <br />Remove material from failed fill sl Sta 62 to 68 Be ~ week of 7/14, C lets b 7R3 <br />instal] tcm diversion i e for S lvester Gulch On hold endi CDMG royal <br />Evaluate stabilisation techniques for head scarp above In Progress. -MCC will select method <br />substation Golder b Sul 22 for installation Au . Ol <br />Evaluate stabilization technique, construction methods and Begin July 16, complett by July 25. <br />cosy for cut slo above shaft #3 site <br />Evaluate redesign of light use maintenance road Sta 6 to In Progress. Complete by July 18 and <br />20 to full width Access/Fiaul Road subatit red to CDMG by Jul 23 <br />Test its and trenches in and below failed fill area Some [imc m Au st <br />Evaluate inclinometer and survey data, recalculate Data collection will be relatively <br />stability and strength parameters, redesign road section. continuous for the next few months. <br /> No attanpt to rebuild the failed section <br /> of road will be made until evaluations <br /> and redr~ign aze completed, and <br /> submitted to CDMG. Approximaze <br /> schedule is October 1997 for submittal <br /> to CDMG. <br />