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:. -- <br />~ ~ III IIIIIIIIIIIIIIII <br />CTLITHOMPSON, INC. <br />CONSULTING GEOTECHNICAL AND MATERIALS ENGINEERS <br />April 25, 1983 <br />Colorado Yampa Coal Company .~ <br />P.O. Box 772129 a:.~J~~.~ ~~p' p <br />Steamboat Springs, Colorado 80477 f Fi'~~ <br />Attention: Mr. Mike Kondelis ~rA Y 3 )983 <br />Subject: Quarterly Inspection MINcp <br />Excess Spoil Disposal Area I Colo rl,~'~hJD Rf,rl.l~~~lplllON <br />Eckman Park Facility Aatllral Resource <br />Job No. 9017A <br />Gentlemen: <br />As you requested, we inspected Excess Spoil Disposal Area Ion <br />April 14, 1983. The purpose of our inspection was to look for evidence <br />of slope instability and to determine if the spoil had been placed in <br />general conformance with the design. <br />There was no evidence of slope failures at the time of our April <br />1983 inspection. No spoil had been placed since our last inspection in <br />January 1983. The benches and outslopes were topsoiled and seeded. <br />Some minor erosion rills were present due to runoff from the recent <br />snowmelt. Placement of rip-rap rock in the diversion ditch to the south <br />of the area was in progress. We understand that final grading, <br />topsoiling and seeding of the top of the spoil pile will be started in <br />the near future. <br />Based upon our inspections of Excess Spoil Disposal Area I, we <br />believe that this facility has been constructed in general conformance <br />with the design. The spoil appears to be stable. <br />If we can be of further service in discussing the contents of this <br />letter or our observations, please call. <br />Very truly yours, <br />CTL/TNOMP~SON~,~I~NCy.-~ /~~ /J ~ ~~.~n~' . <br />Ronald M. McOmber, P.E. <br />~:. , <br />Rev i wed by ~ ~` -. ' <br />` ~ ~ ~ <br />~" o W. Thomp n, P.E. President. <br />RMM:RWT:gI <br />(5 copies sent) <br />1971 WELT 17 r~~mJE NI_I F. DFNVFA CQl npnnn f~U?nq ~ il(1"11 X1750777 <br />