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rC*DhR RO '! <br />October 30, 2018 <br />Memo <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 />To: Robin Reilly, DRMS <br />From: Tabetha Lynch, DRMS <br />Re: Williams Fork Mine, LLC (Permit No. C-1980-004) <br />Permit Renewal No. 7 (RN -7) <br />Reclamation Cost Estimate <br />As requested I have updated the cost estimate for Williams Fork Mine. The cost estimate enclosed is based on <br />the Divisions best match to the tasks available in CIRCES, and utilizes Unit Costs last updated by the Division <br />in August of 2018. <br />The cost estimate was last updated with Surety Recuction No. 1 (SR1), approved 3/27/2017. No permitting <br />actions have resulted in a change in liability since the last update. No tasks were added or removed as a result <br />of this update. <br />The current required surety for the Williams Fork Mine is set at $4,586,431.93. Enclosed is the CIRCES cost <br />estimate for RN7. Based on this estimate the total liability is $4,713,447.09. The current bond held for the site <br />is $4,621,000.00. The increased required surety based on this estimate is $92,447.09. <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 Mike King, Executive Director I Virginia Brannon, Director <br />flF'C-0 <br />H <br />I <br />'F1876 <br />