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WN <br />J. E. STOVER' & ASSOCIATES, INC. <br />2352 NORTH 7T" STREEET, UNIT B <br />GRAND JUNCTION, COLORADO 81501 <br />PHONE: (970) 245 -4101, FAX: (970) 242 -7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />January 29, 2015 <br />Susan Burgmaier <br />Division of Reclamation, Mining & Safety <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />Re: Bowie Resources, LLC, Bowie No. 2 Mine <br />Technical Revision #91, <br />Drainage /Sediment Control /SAE updates <br />Incidental Permit Boundary Revision <br />Adequacy Response #5 <br />Permit C- 1996 -083 <br />Dear Ms. Burgmaier: <br />CIVIL ENGINEERING <br />CONST. MANAGEMENT <br />RED Z�1VED <br />JAN 3 U Z011 5 <br />DMSION OF RECLP,1ATION <br />MINING AND SAFETY <br />The DRMS' letter dated January 28, 2014 requested additional information. On behalf of Bowie <br />Resources, LLC, enclosed is the revised data. <br />9. DRMS: BRL revised page EXH -8 -31 as requested, to include information for <br />Culvert C -1329. Please revise page EXH -8 -31 to include the minimum culvert <br />diameter information (36 ") for Culvert C -B29. The flow listed on page EXH -8 -31 is <br />inconsistent with the design information on proposed page EXH -8- 32xxxii. Please <br />revise the design information on EXH -8- 32xxxii to be consistent with the table on <br />page EXH -8 -31, which is based on the revised flow value for ditch C -C11. <br />BRL: During the adequacy response it was determined that the installed diameter of <br />culvert B29 is 18 ", and, it is not technically part of the sedimentation control plan. <br />Culvert B29 is the Pond B/C diversion structure and used only during low flow times to <br />divert water from Pond C to Pond B, ie when Pond C is to be cleaned out. Therefore, <br />please remove from consideration the design for culvert B29 page Exh. 8- 32xxxii. A <br />note has been added to page Exh. 8 -31 to describe the purpose and operation of <br />Culvert B29. <br />21. DRMS: There were three separate issues under Item 21, previously not numbered. <br />a. Issue resolved <br />b. Issue resolved <br />