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GCC <br />Energy "Safety as a Value" <br />October 21, 2015 <br />State of Colorado <br />Division of Reclamation, Mining & Safety <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />Attn: Robin Reilley, Environmental Protection Specialist <br />GCC Energy, LLC <br />Telephone: 970.385.4528 6473 County Road 120 <br />Facsimile: 970.385.4638 Hesperus, CO 81326 <br />Re: GCC Energy, LLC <br />King II Mine <br />CDRMS Permit # C-81-035 <br />Technical Revision #25 - Surface Hydrologic Features Update <br />Adequacy Review #1 Response <br />Dear Ms. Reilley: <br />This submittal is in response to your letter of September 8, 2015, "King Coal II Adequacy <br />Review of TR -25". <br />The Division's adequacy comments are listed in bold text. GCC Energy's responses to those <br />comments are listed in underlined italics. <br />King Coal II Adequacy Review of TR -25 <br />Reviewed with respect to the following rules <br />Sections 2.05.3(4) Operation Plan and Permit Area: 2.10 mans and Plans: 4.03.1 Roads <br />Drainaae, Culverts: 4.05.2 Water Oualitv Standards: 4.05.3 Convevance of Overland Flow and <br />4.05.9 Impoundments <br />Rule: 2.05.3 (4)(a)(i)(iii)Ooeration Plan/ Permit Area <br />The requirements of these sections of the Rule 2.05.3(4) have been adequately met in the permit. <br />1. Please verify the following elevations: <br />a. Bottom of sediment pond <br />The bottom of sediment pond elevation has been added to Map Kina II -007 C. <br />b. Top of sediment pond embankment <br />The top of sediment pond elevation has been added to Map Kina II -007 C. <br />2. Please indicate if there will be any additional surface disturbance that was not previously <br />permitted. <br />No additional surface disturbance is anticipated. <br />3. On Cover letter you indicate the detention pond has the necessary volume to store the 25 year 24 <br />hour storm event. Please also indicate the modeled volume of rainfall. <br />The modelled volume of rainfall is listed in the SedCad run paaes as 2.20 inches. <br />