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J. E. STOVER & ASSOCIATES, INC. <br />2352 NORTH 7T" STREET, UNIT B <br />GRAND JUNCTION, COLORADO 81501 <br />PHONE: (970) 245-4101, FAX 242-7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />June 8, 2009 <br />J. J. Dudash <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 />TR-62, Ventilation Fan, Adequacy Response No. 1 <br />Permit C-1996-083 <br />Dear Mr. Dudash: <br />CIVIL ENGINEERING <br />CONST. MANAGEMENT <br />RECEIVED <br />JUN 15 2009 <br />Division or Neclamation, <br />Mining and Safety <br />The DRMS' letter dated May 20, 2009, transmitted its adequacy review for the <br />referenced technical revision. On behalf of Bowie Resources LLC, following are its <br />responses to the DRMS' comments and concerns. <br />1. DRMS - Attached is the reclamation cost estimate for TR-62. The estimate is <br />comprised of two tasks (a summary sheet and task 311) and represents an <br />increase in liability of $15,515.00. Please inform the Division in writing whether or <br />not BRL approves of the Division's reclamation cost estimate. <br />BRL- BRL accepts the reclamation estimate. <br />2. DRMS - In an e-mail dated May 15, 2009, the USDA-Forest Service requested <br />additional information concerning noise and noise abatement measures planned in <br />TR-62. The following is a list of the Forest Service's concerns. Please update <br />Section 2.05.6 concerning mitigation, as needed. <br />A. DRMS - Please discuss the anticipated level of noise that will be <br />generated from the fan and how BRL will mitigate the effects of fan noise <br />on wildlife and recreation uses in Hubbard Canyon. <br />BRL - The applicant purchased the Hubbard Creek Fan from Spendrup <br />Fan Co. Spendrup estimates the fan will produce a sound pressure level <br />of 97 dBA at a distance of 20 feet. Spendrup further estimates the sound <br />level can be reduced to about 82 dBA by installing an outlet silencer and <br />insulating the sides of the fan diffuser. The applicant will install both of <br />the sound mitigation measures.