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January 7, 1994 <br />363.879-9048 <br />_ __=.F <br />III IIIIIIIIIIIII III : , <br />33 <br />3 <br />1~~~~11i~rJ <br />JAN 1 J 1994 <br />Mr. Wallace Erickson <br />Department of IV~inerals and Geology P~• ~c c" c. i... ,~," M <br />1313 Sherman Stt'eet, Room 215 .-- `--~ <br />Denver, Colorado 80203 <br />Re: Energy Fuels Mining Company {EFMC) Raton Creek Mine Pond Certification <br />(Permit No. C-82055) <br />Dear Wallace: <br />" Accompanying Chis letter for your review, is the As-Built Map showing the current conEigura[ion <br />_ ~ of the sedimen[ation pond. $xcavation of the pond was completed on December 30, 1993 and the <br />- - survey was conducted January 4, 1994. As shown on the As-Bull[ Map, the capacity of the existing <br />f pond is both adequa[e and consis[ent wi[h design requ{rements. However, a few minor changes are <br />:. required. A minor depression at the nor[h end of the embankment needs to be raised approximately <br />` 0.4 feet to an elevation of 6352.4 feet, the invert of the.emergency spillway also needs ro be lowered <br />0.5 feet ro an elevation of 6350.5 feet, and the invert of [he principal spillway needs to be lowered <br />to an elevation of 6342.1 fee[. <br />These changes should be complete by January 11, 1994. Upon completion of these changes and <br />following your review of [he As-Built Map and receipt:of any comments, a certified copy of the map <br />will be subrriitted by January 5, 1994. Please feel free to contact me if you have any questions or <br />require further information. <br />Sincerely, <br />TerraMatrix/ACZ Inc. <br />~~ ~~~~9 <br />Thomas E. Leidich "'- <br />Projett Engineer <br />cc: Ai Weaver <br />J. Nettleton <br /> <br />