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s <br /> <br />Mr. Tan Gillis <br />March 11, 1987 <br />Page 2. <br /> <br />'lb the best of my knowledge, based upon my professional expertise, the <br />permanent refuse structures at the Deserado Mine are being constructed <br />in conformance with the prudent state-of-the-azt of coal processing waste <br />bank construction. Further, the structures are being constructed in <br />compliance with the approved design, as specified within Section III-20 <br />of the approved perndt documents and depicted on Maps 76, 77, 82 and 83. <br />Western Fuels-Utah, Inc., Deserado Mine, located in Rio Blanco County, <br />Colorado, aze being constructed in Compliance with the design approved as <br />a portion of Permit No. C-018-81, issued by the Colorado Mined Land Reclamation <br />Division. <br />I certify, based upon my field observations and professional investigations, <br />as detailed here above, that the permanent refuse disposal structures at <br />i~/~/ <br />Michaal ,?. ~eigan P.E. <br />Chief Fng~zeer/Construction Manager <br />Colorado Registered P.E. No. 19143 <br />cc: Don Deardorff <br />Bob Johnson <br />John Trygstad <br />Tim Chervick <br />MW File <br />MW:ph <br />