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.; <br />J. E. STOVER & ASSOCIATES <br />2768 COMPASS DRIVE, SUITE 101 <br />GRAND JUNCTION, COLORADO 81506 <br />PHONE: (970) 243-4101, FAX 242-7908 <br />MINB SNGINEH2ING <br />MINE RECWMATION <br />December 23, 1996 <br />RECE~vED <br />David A. Berry <br />Division of Minerals & Geology <br />1313 Sherman St., Raom 215 <br />Denver, CO 80203 <br />utti Z 4 1~6 <br />iii iiiiiiiiiiiuiii <br />crvn, nvcmxrxwc <br />CONSI'. MANAGFMrM <br />Division 0~ pi,',1"Lt2',5 a bcoio9Y <br />RE: Bowie No. 2 Mine <br />New Permit Application, Permit C-96-083 <br />Dear Mr. Berry: <br />During our meeting of November 5'" BRL agreed to update the permit document in reflect the <br />Morrison Knudsen Corporation (IvIIC) site design changes. The major change to the permit is in the <br />drainage design because the haul road and benches were rewnSgured by MK. The proposed <br />disturbed area boundary was revised by the MK design so all of the maps that showed this boundary <br />had to be revised. <br />The MK design did not significantly change the areal extent of the planned disturbance. Therefore, <br />sediment ponds B and C did not have to be redesigned to handle the calculated run-off volume and <br />sediment load. The run-off calculations are presented in revised Exhibit 8, Volume III. I perfom-ed <br />the run-off calculations using the same modeling technique that has been reviewed and accepted by the <br />DMG for this permit application. None of the curve numbers were revised <br />A pump house will be located south of old State Highway 133 near the Deer Trail Ditch as shown on <br />the facilities map. This structure will house pumps capable of pumping water up to the portal area <br />This feature was not provided for in previous submittals. <br />I can address a couple of the loose ends in my December 4'" submittal as follows: <br />8a Enclosed is a letter from the SHPO dated December 3, 1996 regazding the recordation of the <br />Bowie Mine SDT.122. The SHPO requested additional photographs of tfie structures to <br />supplement the Level II Documentation of Struchues. The photographs have been taken and <br />should be submitted to the SHPO in early January. The letter from the SHPO should be <br />inserted into Volume VI, Cultwal Resources. <br />13. A number of the hydrologic monitoring sheets submitted December 4'" were missing the <br />laboratory analysis data for the November monitoring event. Enclosed are replacement pages <br />for those monitoring sheets. <br />