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III IIIIIIIIIIIII III <br />999 <br /> STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br /> <br />Denver, Colorado 80203 DIVISION O F <br />Phone: (303) 866-3567 M[ N E RA L S <br />FAX: (303)832-8106 8c <br /> GEOLOGY <br /> RECLAMATION <br /> MINING•SAFETY <br />September 27, 2001 <br /> Bill Owens <br /> Governor <br /> Greg E. Walther <br />Mi. Wllham A. Bear Jr. Execwive Direcor <br />Bowie Resources Limited Michael B. Long <br />Division Director <br />P.O. Box 483 <br />Paonia, Colorado 81428 <br />RE: Technical Revision No. 21, Two Gob Vent De-Gas Holes, Bowie No. 2 Mine, Permit No. <br />C-96-083, Bowie Resources Limited <br />Dear Mr. Bear: <br />The Division has finished its review of the Bowie Resources Limited (BRL) submittal for <br />Technical Revision No. 21. The Division has the following questions or comments. <br />Following installation of the two gob de-gas boreholes, please provide a well completion <br />diagram for each of the boreholes. Well casing and perforated well casing intervals <br />should be included in the completion diagrams. Ln addition, any aquifers or saturated <br />zones encountered during drilling should be depicted on the appropriate completion <br />diagram. <br />2. Please designate, in an appropriate permit text location, which generic sediment control <br />design applies to each of the de-gas holes proposed in TR-21. In addition, please provide <br />similaz information for all of the Bowie No. 2 de-gas holes. <br />3. Attached is the Division's reclamation cost estimate for TR-21. The total liability <br />estimate is $25,153.00, which is $8,491.00 higher than BRL's estimate of $16,662.00. <br />There are several reasons why BRL's estimate is lower than the Division's estimate. First, <br />BRL uses a s[andazd, per acre, value for backfilling and grading. This does not take into <br />account different volumes based on cut and fill requirements for the specific area. In this <br />estimate, each of the regrading tasks was approximately 1/z of the Division's cost. Second, <br />BRL does not include any costs for topsoil replacement on the drill pads or access roads. <br />In the Division's estimate, topsoiling tasks account for $1,645.00 in direct costs. Third, <br />BRL is using old seed costs in their revegetation costs. BRL uses a cost of $1,567.00/acre <br />