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GUNNISON GRAVEL/ <br />P. O. Box 42 <br />Gunnison, CO 81230 <br />(970)641-3088 <br />(970) 641-5811 FAX <br />(970)209-0442 Mobile <br />Bob Oswald <br />Sally Wilcox, Owner <br />Warren Wilcox, Manager <br />~~~ <br />`'~''~~ ~ <br />O~ <br />`~~ <br />April 16, 2002 P,`~s~ <br />?PC <br />eo~~ <br />o~. <br />aeceW~ <br />MpY 14 2p02 <br />~~~p FieW ~G001o9Y <br />p'rl}6bn of Minerals & <br />Environmental Protection Specialist <br />Division of Minerals and Geology <br />701 Camino del Rio, Room 125 <br />Durango, CO 81301 ~ f ~• <br />Re: Rudibaugh Pit, File No. M-95-057 Technical Revision tr~~. ' t[ ~' <br />Dear Mr. Oswald, <br />This letter is being written to request a technical revision to Exhibit C of the <br />Rudibaugh 110 Pit Permit to allow sand washing operations. Any wash equipment maybe <br />used including, but not limited to a sand screw, a wash plant or a sand classifier. Water to <br />be used from the current irrigation ditch and returned to imgation after passing the <br />settlement basin. A small pump sump about four foot square and 30 inches deep will be <br />incorporated into the irrigation ditch currently in place. The settlement pond will be <br />approximately 14 feet wide by 75 feet long and ab-out 2.5 feet deep.-The overflow from <br />the settlement pond back to the imgation ditch will be either C. M. P. or plastic pipe. <br />Enclosed is a check for $188.00 to cover the technical revision fee. <br />Thanks! <br />~~~~~~~~ <br />Warren O. Wilcox V' <br />