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~a _ <br />~"~ <br />Mr. 1tm Gillis <br />Sept. 27, 1965 <br />Page 2 <br />'lb the best of my knowledge, based upon my professional expertise, the permanent <br />refuse structure at the Deserado Mine is being constructed in confonrance with <br />the prudent state~f-the-art of opal processing waste bank construction. Further, <br />the structure is being constructed in crn~liance with the approved design, as <br />specified within section III-20 of the approved permit docwnents and depicted on <br />Maps 76, 77, 82 and 83. <br />I certify, based upon my field observations and professional investigations, as <br />detailed here above, that the permanent refuse disposal structure at F~stern Fuels- <br />Utah, Inc., Deserado Mine, located in Rio Blanco County, Colorado, is being <br />constructn_d in crng~liance with the design approved as a portion of Permit No. <br />C-018-81; issued by the Colorado Mined Land Reclamation Division. <br />Respectfully, ~ <br />i''~ <br />.Michael J. Weigand, P.E. <br />Chief Engineer/Construction Manager <br />Colorado Registered P.E. No. 19143 <br />MJW/rh <br />cc: Don Deardorff <br />Raja [lpadhyay <br />John Trygstad <br />Site File <br />~ ~ <br />~ ~; F. <br />~ <br />": _' O <br />Zs <br />•v 19 143 0' <br />~'.$ ~. r <br /> <br />~~~5~ • V <br />~• <br />•. <br />hG~rV <br />~ l L <br />L <br />