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~ 111111 IIIIIIIIIIIII III ~ <br />~' a GEC MINERALS, INC. <br />FLORENCE, COLORADO 81226 303/784-6891 <br />P.O. BOX 225 <br />September 22, 1983 <br />~~:: <br />Ms. Carol Russell ~~I` ~® <br />Reclamation Specialist Jtr <br />Mined Land Reclamation Division ~ ~ 1983 <br />1313CShermanaStBeetdl ng MIA~Fp ~ ~ vn RE~IAMAiION DIVISION <br />Denver, Colorado 80203 a.uralResources <br />RE: Topographic Survey for GEC Minerals, Inc. East Pit- <br />Fremont County, Colorado, August 12, 1983 <br />Dear Carol: <br />Enclosed please find one copy of the letter sent to GEC by American West <br />Mineral Consultants, Inc. (AWMCI) indicating that an error of 32,000 cu. <br />yds. was made and found by GEC during the preparation of the East Pit <br />volume calculations. However, due to the assumptions used by AWMCI was <br />based on U.S.G.S., 7.5 minute Rockvale, Colorado, topographic map, and the <br />gradient of the intermittent stream bed, which was not in compliance with <br />the approved post-mining contour map in the East Pit area. A re-evaluation <br />was made by GEC by using the modified post-mining information to eliminate <br />most of the unnecessary cut for the backfilling of the East Pit, resulting <br />in a volume of 357,143 cu. yds. rather than 725,000 cu. yds.. <br />Should you have any questions regarding the above matter, please let me know. <br />Sincerely y u s, <br />L.K. en <br />VP-Mine Planning/Engineering <br />LKC:deMc <br />Enclosure <br />cc: S. Layton <br />