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ANR <br />CO AAf <br />COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, Co 80203 <br />John W. Hickenlooper <br />Governor <br />Robert W. Randall <br />Executive Director <br />Ginny Brannon <br />Director <br />INTEROFFICE MEMORANDUM <br />TO: Robin Reilley <br />FROM: Clayton Wein a411 <br />DATE: 6118.'2018 <br />SUBJECT: Seneca II West, Permit No. C-1982-057 <br />Midterm Review No. 7 Adequacy <br />Rabin, <br />As requested, 1 have reviewed the Seneca I[ West (S2W) permit sections relating to the <br />hydrology, geology, reclamation plan and mitigation of impacts from mining. Review of these <br />sections has determined that they are in compliance with the Rules and Regulations. Please see <br />the information below for more details, any text in bold is an item that was found to be <br />inadequate. <br />Rule: <br />2.04.5(1)-(3) — General Description of Geology and Hydrology <br />Tab 6 and Tab 7 of the S2W permit contain the descriptions of the general geology and <br />hydrology of the permit area and the regional area that the permit resides in. The Tab 7 <br />description contains the lithologic units, stratigraphy and geologic structure and how the <br />hydrology is affected by the geology. The description contains information detailing the age of <br />the geologic units in which the coal to be mined is contained; as well as, the hydraulic <br />capabilities of the geologic units. Maps and tables are included in the text to help illustrate the <br />information. Information on regional and site specific information is included on surface and <br />groundwater. Surface water and groundwater quality and quantity ae discussed in Tab 7. <br />oora <br />1313 Sherman Street, Room 215, Denver, CO 80203 F 303.866.3567 F 303.832.8106 http*//rnining.state.co.us <br />John W. Hickenlooper, Governor I Robert W. Randall, Executive Director I Virginia Brannon, Director **** <br />* 1876 41` <br />