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AWW 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 />Memorandum <br />Date: July 11, 2016 <br />To: Tabetha Lynch, DRMS <br />From: Jared Ebert, DRMS <br />RE: Trapper Mine, C-1981-010; SL -17; Vegetation Review and Liability Reduction Amount <br />I have completed my review of the vegetation monitoring reports submitted with the SL -17 bond <br />release application that Trapper Mining, Inc. (TMI) uses to demonstrate they have met their <br />revegetation success standards. Based on my review of this data, the bond release blocks in <br />question have been reclaimed to meet the revegetation success standards as outlined in section 4.4 <br />of the TMI's permit and the applicable sections of Rule 4.15. The following discussion has been <br />drafted to be used in your findings document to explain why the bond release blocks have been <br />sampled and analyzed to demonstrate that they have been reclaimed to meet the revegetation <br />success standards. <br />Reve2etation Success Sampling and Results <br />TMI sampled vegetation in the summer of 2014 and the summer of 2015. The Operator hired <br />IME consulting firm from Yampa, Colorado to assess the revegetation success. Two bond <br />release blocks were sampled. One bond release block consisted of parcels reclaimed in the D, F, <br />and Z pits that are within range site A and B. The second bond release block consists of parcels <br />reclaimed in the A, D, and H pits that are within range site C. The bond release blocks were <br />sampled for vegetative cover, productivity, species diversity, woody plant density and shrub <br />clump survival. The range site AB bond release block was compared to the approved success <br />standard for range site A and the range site C bond release block was compared to the <br />revegetation success standards for Range Site C as approved in section 4.4 of TMI's permit. <br />Trapper achieved vegetative success for rangeland cover, productivity, diversity, woody plant <br />density and shrub clump survival. Due to non -parametric data distribution of rangeland <br />productivity and woody plant density data, TMI demonstrated reclamation success of these two <br />parameters by using the reverse null hypothesis per rule 4.15.11(2)(c). <br />Two revegetation monitoring reports were submitted with the SL -17 application for areas <br />sampled in 2014 and 2015. These reports outline the methods used to measure vegetative cover, <br />productivity, species diversity, and woody plant density/shrub clump survival. The sampling <br />methods used meet the criteria outlined in Rule 4.15.11 (1) and the permit application. <br />Revegetation monitoring transects were randomly located throughout the bond release blocks. <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us I *� <br />John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director x 1876 + <br />