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rP ..~` • . III III'll'II IIII III <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmenl of Nalu ml Resources <br />1313 Sherman 51 , Room 215 <br />Denver, Colorado 80'07 <br />Phone: 11031 R66 3567 <br />FA%. (3031 B32~A106 <br />DATE: MAY 28, 1996 <br />TO: DAVE BERRY <br />V <br />RE: BOWIE #2 HYDROLOGY ADEQUACY REVIEW <br />FROM: JOE DIIDAEIH V U <br />dames S. Lnchhead <br />F.enmve Dirraor <br />.wchael B Long <br />Divi>iun Dveclor <br />This is a second set of questions that I have concerning hydrology <br />at the Bowie ~2 Mine. The first set of my questions was contained <br />in a memo to you, dated May 13, 1996. <br />2.05.3 OPERATION PLAN - PERMIT AREA <br />2.05.3(4) PONDS, IMPOUNDMENTS AND DIVERSIONS <br />1. Maps nos. 21-1 and 21-2 show many culverts which will outflow <br />into relatively steep terrain. As explained in question No. 3 <br />below, several of these culverts are intended to be left as <br />permanent structures. How does the operator plan on <br />controlling erosion at these culvert outlet locations, both <br />during mining and after final reclamation? <br />2.05.3(5) TOPSOIL <br />2. Please provide a map that shows the full extent of the <br />coverfill stockpile. Map no. 15-1, Mine Facilities, shows only <br />a portion of that stockpile. <br />2.05.E RECLAMATION PLAN <br />3. Referring to map No. 18, Postmining Topography, and map no. <br />17, Premining Topography, it appears that there will be <br />several culverts which will be installed by the operator which <br />will be left as permanent structures after reclamation. These <br />culverts appear to be associated with new and old road <br />construction. It appears that some of these new roads also <br />will remain as permanent structures. According to Rule <br />4.03.1(7)(a), these roads and culverts can be retained as <br />permanent structures only if the structures are compatible <br />STATE OF COLORADO <br />~~ <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />Governor <br />