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~~III~IIIIIIII~~I~~ <br />MINED LAND RECLAMATION DIVISION <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />303 8663567 <br />FAX~303 832-8106 <br />May 2, 1991 <br />tom. Jim Stover, P,E. <br />Chief Engineer <br />Minrec, Inc. <br />743 Horizon Court, Suite 205 <br />Grand Junction, Colorado 81506 <br />RE: Red Canyon Mine, Permit No. C-81-034, Subsidence Monitoring <br />Dear htr~. Stover: <br />OF ~~f0 <br />1~ = '~~ <br />„~ `~g <br />nG ~:J7, <br />+ ~.,>> ~ <br />' f876' <br />Roy Romer. <br />Governor <br />Fred R. Banta, <br />Division Drtector <br />I am having difficulty tracking down some informs ti on and I hope you <br />can help me. Technical Revision No. 2, with a decision date of <br />December 31, 1986, includes a stipulation for a revised subsidence <br />monitoring program. This program includes "quarterly monitoring and <br />provision that the operator can request a cessation of monitoring at <br />the end of two (2) years if no movement is attributed to subsidence." <br />I have been unable to find any subsidence monitoring data except for. <br />May, 1989, I have seen reference to subsidence data for April, 1986 <br />but am unable to locate that data as well, If you can lead me to the <br />location of these data, please let me know. <br />Sincerely, <br />D~~ <br />oseph J ~Dudash <br />Engineering Aide <br />JJD/eke <br />- °(U <br />STA~ OF COLORADO <br />5328E <br />