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• <br />:~ <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmrm of Nawral Resources <br />1313 Sherman 51., Room ? 15 <br />Denver, Colorado NO'_03 <br />Phone: (3UJ1 N66~3i67 <br />FAX: 13011 A3?-N106 <br />May 17, 2000 <br />Mr. William A. Bear Jr. <br />Bowie Resources Limited <br />P.O. Box 483 <br />Paonia, Colorado 81428 <br />~~' k <br />DIVISION O F <br />MINERALS'I" <br />GEOLOGY <br />RECLAMATION <br />MINING•sAFETY <br />bill Owens <br />Governor <br />Greg E. Walther <br />&ecuovc Director <br />.N;chael A Long <br />Drvieion D~reclor <br />RE: Technical Revision No. 15, Gob Vent Borehole Construction Typical Designs, Bowie <br />No. 2 Mine, Permit No. C-96-083, Bowie Resources Limited <br />Deaz Mr. Beaz: <br />The Division has finished its review of Bowie Resources Limited's (BRL) submittal dated May <br />8, 2000 for Technical Revision No. 15. All of the issues raised by the Division have been <br />answered appropriately by BRL. However, a proposed decision can not be made at this time <br />because the comment period for the public and for other agencies is still open. The Division has <br />the following comments. If other pertinent issues are raised during the comment period, the <br />issues will be forwazded to BRL. <br />Proposed revised pages Exh-8 - 29i and Exh-8 - 80i show designs jor two ditches, <br />designated as GVB-l and GVB-2. However, Map No. 36 shows three ditches, one jor <br />each pad design. Please explain. <br />The Division has no further concems. Revised Map No. 36 and pages Exh-8-29i and <br />Exh-8-80I, dated May 8, 2000, contains the added information. <br />Please explain why the particle size distribution for the silt fence SEDCAD design in TR- <br />1 ~ is different from that used for the Freentatt Gulch vent shaft silt fence SEDCAD <br />design. Soil Map No. =1A appears to show that the soil type should be about the same for <br />TR-14 and TR-l5. <br />The Division has no further concerns. The use of the Absarokee-Work Loam particle size <br />distribution would be appropriate for this project. <br />3. Proposed revised page 2.05-47 contains a discussion on reclamation of the gob vent bore <br />holes once the holes are no longer needed. Please add a discussion on the interim <br />sediment control procedures, such as temporary seeding, that will be used immediately <br />after the drill hole has been constructed. If the topsoil will remain stockpiled jor a fair <br />amount of time, an appropria[e sediment control structure should be installed. The <br />sediment control structure might be a row of bales or a berm could be boil! around the <br />~ III IIIIIIIIIIIII III <br />STATE OF COLORADO <br />