Laserfiche WebLink
J. E. STOVER & ASSOCIATES <br />2768 COMPASS DRIVE, SUITE 101 <br />GRAND JUNCTION, COLORADO 81506 <br />PHONE: (970) 245-4101, FAX 242-7908 <br />MINE ENGINEERING <br />MINE RECLAMATION <br />August 13, 2003 <br />J. J. Dudash <br />Division of Minerals & Geology <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />Re: Bowie No. 2 Mine <br />Application for a Technical Revision - TR-27 <br />Wash Plant <br />Permit C-96-083 <br />Dear Mr. Dudash: <br />CIVIL ENGINEERING <br />CONST. MANAGEMENT <br />RECEIVE® <br />AUG 1 4 2043 <br />Division of Minerals and Geology <br />The DMG's letter dated July 28, 2003 transmitted its adequacy review for the referenced technical <br />revision. Following are BRL's responses to the DMG's comments and concerns. <br />Geotechnical -Roads <br />2. <br />3. <br />4. <br />DMG -Unless in rock, the proposed haul road along the old railroad bed road cuts appear to be <br />too steep in the vicinity of Stations 101 and 105.4 on Map No. 16 [Rule 4.03.1(3)(d)(i)]. Please <br />annotate on Map No. 16 that the in-situ materials of the road cut in the vicinity of these stations is <br />rock, or mitigate these steep slopes as allowed in Rule 4.03.1(3)(d)(i). The north side of this area <br />appears to be an area of fill on Map No. 15-1. Please clarify. In addition, please indicate the <br />contour interval on the plan drawing of Map No. 16. <br />BRL -The problem noted is caused by a lack of the contour interval noted on Map No. 16. The <br />contour interval is 2-feet. The slopes in question, in the vicinity of Stations 101 and 105.4 are <br />2H:1 V slopes. The outslope (south side) of the haul road embankment is also designed with <br />2H:1 V fill slopes. <br />DMG- Please provide a characterization of the materials from the preparation plant project that <br />are to be used in the construction of the old railroad bed haul road that demonstrates compliance <br />with Rule 4.03.1(e)(iii) (i.e., no coal). <br />BRL -The characterization of the materials that can be used in haul road embankments was <br />added to page 2.05-20. <br />DMG -Please provide a representative cross section of the haul road along the old railroad bed in <br />the vicinity of Station 111, or other information, that demonstrates compliance with Rule <br />4.03.1(3)(e)(ix). <br />BRL -The contours on Map 16 were annotated to clearly show that the haul road embankment <br />slopes are not steeper than 2H:1 V. Amended Map 16 is enclosed. <br />DMG -Please include a description of reclamation proposed for the haul road along old railroad <br />bed [Rule 4.03.1(7)]. <br />BRL -Reclamation of proposed haul road is presented on page 2.05-23 <br />