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STATE OF <br />DIVISION OF MINERALS AND GEOLOGY <br />Depatlmem of Natural Resources <br />1 411 Sherman St., Room 215 <br />Denver. Colorado 80201 <br />Phone: 11011 866-1567 <br />FAX 11011fl32-fl 106 <br />November 24, 1997 <br />]erry Koblitz <br />Greystone Development Consultants <br />5990 Greenwood Playa Blvd. Suite 104 <br />Englewood, CO 80111 <br />Re: Adequacy Review TR-30, Chimney Roclt Mine, Permit No. C-81-023 <br />Dear Mr. Koblitz: <br />10 <br />II~~~ <br />DEPARTMEN'C OF <br />NATURAL <br />RESOiJIZCES <br />Roy Romer <br />Governor <br />lames S. L«hhead <br />Ewecutive Oirtrw <br />Michael 8. Long <br />D,v~sion Dirttor <br />The Division has completed the review of TR-30 and a few issues need to by resolved prior to approval. <br />The following items require additional information or modification: <br />1. At the rnd of ditch 2S2a, the map shows the water ponding behind the shop, however, there has <br />been a culvert instalkd to drain this area to the AVF area. Designs for this culvert muse be <br />included in the appropriate appendix and the map must be updated to show this change. <br />2. New xgments of ditches have been install az the site without adequate design characteristics for <br />ditch xgments 3Nb and 3Nc. Please update these designs to include velocities and if any <br />armoring is required. <br />3. Pleax indicate in the hydrology section of the permit thaz hydrologic monitoring will recommence <br />2 years prior to an anticipated Phase III bond release request. <br />Should you have any questions or are in need of additional information, please contact me. <br />Sincerely, <br />Harry B. Ranney <br />Environmental Protection Specialist <br />C III 1111111111111111 <br />cc: Michael Keegan, Kaiser Eagle Mountain <br />