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Engineering -Consultants <br />o>rthwest Colorado Consultants, Inc. Materials Testing <br />29585 U.S. 40 West, P.O. Box 775228, Steamboat Springs, Colorado 80477 FAX 970-879-7891 <br />970-879-7888 <br /> <br />~u~ .i ; ,,,~a5 <br />C ~~ -6~ <br />July 7, 1995 ~ ~ / ~r/w+- <br />Bower Bros. Construction (/rr fir // <br />595 Taylor Street <br />Craig, CO 816?S <br /> <br />Subject: On-site Inspection, Waste Coal Area, <br />Foidel Creek Mine, Routt County, Colorado. <br />Gentlemen, <br />Attn: Mr. Bud Bower RECEIVED <br />]ob No. 95-2296 JUL 11 ~gg5 <br />Division of Minerals & Geology <br />As requested, Northwest Colorado Consultants, Inc visited [he project site on June 29, 1995 and July 5, <br />1995 to observe and inspect the portion of the Coal Waste Area which was being stripped of topsoil In <br />addition, we observed the excavations for the temporary surface runoff ditch constructed at the upper <br />edge of the stripped azea and the tce buttress being constructed in the northeast corner of the stripped <br />area. <br />At the time of our visit on June 29, 1995, the contractor was in the process of removing the topsoil from <br />the extreme eastern edge of the waste coal pile. The area being stripped ranged from 10 to 50 feet in <br />width and was approximately 350 feet in length. It appeared that the contractor had an azea <br />approximately 50' wide aad 90' long remainineo to remove, a[ the time of our visit. At the time of our <br />inspection on July 5, 1995, the contractor had completed the topsoil removal from this azea. Based on <br />our observations, it appeared [ha[ [he topsoil depth ranged from 18 and 22 incites. Based on our <br />observations, we believe that the portions of the waste coal pile which are noted above have been <br />adequately stripped of topsoil. Photographs of the stripping operatioq taken on June 29, 1995, are <br />attached. The areas which had been stripped and inspected aze shown on the attached Figure #1. <br />In addition, we observed the temporary surface runoff ditch which had been constructed along the <br />uphill side of the areas which had been stripped of topsoil. Based on our observations, it appears that <br />the ditch was constructed in general accordance with the project plans and it should divert surface <br />runoff away from the coal pile adequately. Photographs of the temporary surface runoff ditch, taken <br />on June 29, 1995, aze also enclosed. <br />The contractor had also started to excavate the toe buttress in which the toe drain will be installed. <br />The soils exposed in the excavation generally consisted of very hard shale bedrock. At [he time of our <br />visit, the contractor had the buttress excavation dug approximately 4 feet below the etastitrg ground <br />surface on the eastern edge of the excavation. Due to the presence of very hard shale bedrock, the <br />