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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 />Memo <br />Date: July 6, 2017 <br />To: Robin Reilly, DRMS <br />From: Tabetha Lynch, DRMS <br />RE: Trapper Mine, Permit C-1981-010 <br />Permit Revision No.8 (PR 8) <br />Adequacy Review Memo <br />Rule: 2.04.5(1)-(3) ❑General Description of Hydrology and Geology <br />An overview of the regional hydrology and geology which meets the required of Rule 2.04.5. This <br />includes: a description of the regional geology in reference to the permit area, a map in accordance with <br />2.10 providing regional hydrological features and drainage areas, and an adequate characterization of <br />surface and groundwater quality and quantity for this section. Geologic Charaterization is primarily <br />refered to Section 2.04.6 and Hydrologic capabiliy is refered to Section 2.04.7 reviewed below. <br />Rule: 2.04.6(1)-(2) ❑Geology Description <br />As part of Stipulation 22, in relation to the geology in the expansion area: <br />(c) A geology description that updates Sections 2.7.2 and 2.7.3 of the Trapper Mine permit application <br />package with the information required by Rule 2.04.6(2)(a) and (b). <br />Trapper is not requesting to mine the PR -7 area with this revision. The operator states that additional <br />geologic information will be provided as a revision at the time the mining plan is submitted. <br />A study of overburden characteristic has been conducted, and a new section added for the Overburden <br />Geochemistry of the PR -7 Expansion Area. Corehole data is provided and map included. <br />Rule: 2.04.7(1)and (3) []Hydrology Description <br />This is a review of the groundwater related sections of the Hydrology Description which include <br />groundwater information, alternative water supply information, and map preparation. Storage <br />and recharge capacites. <br />Additional drainage data has been included into the permit, describing the drainage quanties and <br />water quality characteristics of Deacon Gulch and Jeffway Gulch. <br />QF CQlO <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us <br />John W. Hickenlooper, Governor I Robert Randall, Executive Director I Virginia Brannon, Director * 1876 V` <br />