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STATE OF COLORADO <br />DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />7373 Sherman St., Room 275 <br />Denver <br />Colorado 80203 C O L O R A D O <br />, DIVISION O F <br />Phone: (303) 866-3567 RECLAMATION <br />FAX: (303) 832106 M I N I N G <br /> - &- <br /> SAEETY <br />February 9, 2007 Bill Owens <br /> Governor <br /> Russell George <br />Mr. Ross Gubka, P.E. E%eCU1iVe D"~`t°` <br />Chief En ineer <br />g Ronald W, Cattany <br />Division Director <br />Western Fuels-Colorado Natural Resource Trustee <br />P.O. Box 628 <br />Nucla, Colorado 81424 <br />Re: New Horizon Mine, Permit No. C-81-008 <br />Technical Revision No. 54 (TR-54) Adequacy Review <br />Dear Mr. Gubka: <br />The Colorado Division of Reclamation Mining and Safety (DBMS) has reviewed <br />Western Fuels -Colorado (WFC's) response to our November 13, 2006 adequacy letter <br />on Technical Revision No. 54. Based on that review, and our meeting with WFC <br />representatives on January 30, 2007 we have the following comments. All of the issues <br />contained in our November 13, 2006 adequacy letter have been resolved with exception <br />of the items listed below. All of the items below are related to the DBMS revised <br />reclamation cost estimate. <br />January 30, 2007 Meeting -numbering follows WFC meeting agenda <br />1. Drill hole reclamation -The Division has revised all drill hole and monitoring <br />well reclamation tasks, consistent with our discussions in the meeting and <br />subsequent information provided by WFC. The cost estimate now includes only <br />those holes which have not been reclaimed or mined through. With the exception <br />of wells N13, N16P1, N43, and N46 which will require positive displacement for <br />sealing, cost estimates for all holes are based on gravity placement (free fall) of <br />bentonite chips. <br />2. Dozer Job Correction Factors -Our comments on correction factors and the <br />Wyoming DEQ Guideline No. 12 are discussed in Item 1 of the General <br />Comments section below. <br />3. Scraper Capacity - <br />a. Scraper tasks have been revised using the latest machine capacities <br />published by Caterpillar. <br />Office of Office of <br />Mined Land Rxlamation Active and Inactive Mines <br />