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OFFICE Of THE STATE ENGINEER <br />Division of Water Resources <br />Department of Natural Resources <br />1 713 Sherman Slree4 Room 818 <br />Denver, Colorado 8020; <br />Phunc U03) 86G-7581 <br />FAX i 3071 8G6~ 3589 <br />• • iii iiiiuiiiiiu iii <br />999 <br />STATE OF COLORADO <br />of cow <br />~~ r <br />s b. <br />0 <br />'•t~l:. <br />toy Rnmcr <br />Governor <br />aF (' E I\! F ~-lames S Lxhhcad <br />f xxuUvc Direchu <br />April 26, 1995 ~ ~9 ~ D s~mP,n~ <br />MAY 0 date F~Ri~ee, <br />Jlvi~,i0n C~ rv~inztd~5 6lUe0bgY <br />Ms. Barbara L. Pavlik <br />Environmental Protection Specialist <br />Division of Minerals 8 Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RE: Eastside Mine (Permit No. C-84-063) <br />Technical Revision No. 12 (Change in Water Monitoring) <br />Dear Ms. Pavlik: <br />With regard to the referenced Technical Revision No. 12 proposal, this office has reviewed <br />the proposal and the hydrology section of the permit application to determine if the proposed <br />technical revision would have adverse water resources impacts; specifically, the following have <br />been reviewed: <br />1) The groundwater modeling done utilizing the "A~UILIS" model to simulate confined/ <br />unconfined aquifer responses to mining. <br />2) The technical revision proposing to reduce but not eliminate groundwater quality monitoring. <br />3) The plan of augmentation decreed in Division 5 Water Court in Water Court Case 91 CW081. <br />This office has no objection to the proposed Technical Revision No. 12 (Change in Water <br />Monitoring) in that no adverse water resource impacts are perceived. <br />Sincerely <br />.~ ~ <br />/. '' <br />Chuck Roberts <br />Professional Engineer III <br />CGR:jmg <br />6386L.cgr <br />.t'c : iii/l,r ~//' JJ-'. s l~/~~: <br />