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OWN] <br />State <br />of <br />Cbloradlo <br />Colowyo RN -06 RCE <br />State.co.us Executive: Branch Mail - Colowyo RN -06 RCE <br />Stark - DNR, Jim <jim.stark @state.co.us> Mon, Mar 18, 2013 at 2:39 PM <br />To: "Tennyson, Tony (Colowyo)" <tennyson @tristategt.org> <br />Cc: Rob Zuber - DNR <rob.zuber @state.co.us >, Alysha Hernandez - DNR <alysha.hernandez @ state.co.us>, Mary <br />Rodriguez - DNR <mary.rodriguez @state.co.us> <br />Tony, <br />just wanted to update you on the progress of the Colowyo RN -06 cost estimate. I recalculated the estimate <br />with the changes we discussed and agreed upon. The first was changing the spoil weight from 2,900 # /LCY to <br />2,572 # /LCY. Second, the Division changed task 065 - Construct Post - Mining Drainage Channels, to eliminate <br />the purchase and hauling of riprap from off -site. The Division did, however, add task 066, which is a task <br />specifically for the segregation of riprap for the sole purpose of the construction of the post- mining drainage <br />channels. This has decreased the overall cost for the construction of these channels from $9,221,073.00 to <br />$1,271,133.00. <br />Overall, based on the above changes, the liability for the Colowyo Mine for Permit Renewal 06 has decreased <br />from $120,229,958.00 (including the $10,666,896.00 for TR -98, which is now included in the RN -06 estimate) to <br />$106,317,988.00, a decrease of almost $14,000,000.00. This liability is before any decreases in liability for SL- <br />06 are included. So, the overall liability for the mine will decrease a bit more when I calculate the SL -06 liability <br />decrease over the next few days. I have attached a copy of the revised RN -06 estimate. Once we agree with the <br />estimate I will reformat it and the Division can get a final copy out to you. Finally, I don't know if Rob mentioned it <br />but, since the Division calculated the estimate and there is now no independent Colowyo estimate for the RN -06 <br />liability, the Division will need to have you resubmit this estimate (once I reformat it) as the RN -06 estimate for <br />Exhibit 13A. <br />Please let me know if you have any questions. Thanks. <br />`` Colowyo Permit Renewal 06 Reclamation Cost Estimate - Version 3 - 18 March 2013.pdf <br />3546K <br />https: / /mail.g oog le.conVmai I /u /0 / ?ui =2 &i Ire29129fcb5 &view= pt &search =i nbox&th= 13d7f3a5c6ff537d 1 /1 <br />