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DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866 -3567 ! <br />FAX: (303) 832 -8106 <br />October 30, 2013 <br />STATE OF COLORADO <br />COLORADO <br />D I V I S I O N- O F <br />RECLAMATION <br />MINING <br />SAFETY <br />John W. Hickenlooper <br />Governor <br />Mr. Mark A. Steen Mike King <br />Gold Hill Mines, IMC. Executive Director <br />957 Reynolds Farm Lane Loretta E. Pifieda <br />Longmont, CO 80503 Director <br />Re: Gold Hill Mill, Permit No. M- 1994 -117, Technical Revision Approval, Revision No. TR -9 <br />Dear Mr. Steen: <br />On October 30, 2013 the Division of Reclamation, Mining and Safety approved the Technical Revision <br />application submitted to the Division on February 15, 2013, addressing the following: <br />Modification of water monitoring plan addressing the following: <br />a) Remove Left Hand Creek water sampling location. <br />b) Cease collecting samples from the Wynona Mine until such time as the mine is used for <br />water storage. <br />c) Remove Hazel A water sampling location. <br />d) Continue water sampling at all four wells (MWI -MW4) located below the tailings <br />impoundment. ` <br />e) Establishment of MWI (mill well) as the compliance point for Gold Hill Mill. <br />t7 The following parameters will be eliminated from the sample suite: Arsenic, Aluminum, <br />Cadmium, Chromium, Cobalt, Copper, Fluoride, Iron, Lead, Lithium, Mercury, Nickel, <br />Selenium, and Vanadium. Sampling of the following parameters will continue: Manganese, <br />Zinc, Sulfate, pH, temp., conductivity and TDS. <br />The terms of the Technical Revision No. 9 approved by the Division are hereby incorporated into Permit <br />No. M- 1994 -117. All other conditions and requirements of Permit No. M -1994 -117 remain in full force and <br />effect. <br />If you have any questions, please contact me at (303)866 -3567 x8116. <br />Sincerely, <br />Michael A. Cunnin ham is C4 <br />Environmental Protection Specialist • 1/� <br />o <br />CC: Tom Kaldenbach, DRMS <br />Office of <br />Mined Land Reclamation Denver • Grand Junction • Durango <br />Office of <br />Active and Inactive Mines <br />