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OFFICE OF THE STATE ENGINEER <br />Division at W Ater Resources <br />Department of Naturet Resources <br />1373 Sherman Street, Room 818 <br />Denier. CWOretlo 80203 <br />Phone (303) 886-3581 _ <br />~ <br />A ~~ <br />' <br />P^ ^ C" `` <br />~ <br />l <br />~l <br /> <br />FAX (303)8663589 <br />t~ <br />t;`~~ ~ <br />~ V <br />~, <br />f <br />www.watecstate <br />w <br />us . ~° <br />' <br />. <br />. ~ <br />`;~ MAR 2 9 2006 <br />Dmsron of MlMrau and Gsabgy <br />March 27, 2006 <br />Joseph J Dudash <br />Environmental Protection Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />Re: Bowie Mine No. 2 (Perrrtit No. C-1996-083} <br />Permit Revision Application No. 10 (PR-10) <br />Revised B-seam Mine Plan. Expand Mine Plan to the North <br />Deaz Mr. Dudash: <br />OF ~0/p <br />y~ , <br />~~ <br />. <7\~~ <br />~ role <br />sin Owens <br />Governor <br />Russell George <br />Executive Direrior <br />Hal Simpson <br />State Engineer <br />The Division of Water Resources does not have any concems regazding water issues related to the plan to <br />expand the mine to the north. <br />The Division of Water Resources Dam Safety Group does have concems regazding the proximity of mining <br />and mine produced subsidence to the Bruce Pazk Dam. We would suggest some form of subsidence <br />monitoring to ensure that mining-induced subsidence does not encroach any closer than the planned 1,500 <br />feet of the structure. We would also suggest that a mechanism for notifying the Dam Safety Group be <br />included with the plan in the event that there should be unexpected developments during mining. <br />If you have any questions, feel free to contact me at (303) 866-3581. <br />Sincerely, <br />Michael P. Schaubs <br />Geologist <br />Geotechnical Services Branch <br />Division of Water Resources <br />