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TRAPPER MININGr INC. <br />III IIIIIIIIIIIII III <br />999 <br />August 6, ] 993 <br />~~., <br />Mr. Kent A. Gorham <br />Division of Minerals and Geology aUr ~ :y9~ <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />ialYL.,,.i .. ~.~., ~.. ,.... _ ...- <br />Dear Mr. Gorham: <br />RE: Trapper Mine (Permit No. C-81-010) MR-126 <br />Ashmore Pit Mine Sequence and Diversion Ditch Changes <br />Enclosed please find updated maps M-51 (3 of 4), M-l0A (sheet 6) and M-10B (sheet 6), and updated page 4-174 <br />(Table 4.8.1). This material is provided to illustrate permit changes to the active mining area of Ashmore Pit. <br />Individual permit changes are discussed below: <br />East Pveatt Diversion Ditch 1i3. As discussed in a previous revision (MR-122), enclosed Map M-51 gives a <br />new alignment of the subject diversion ditch from the north side of North A Haulroad to the south side. The <br />new alignment will create 1.0 acre of new disturbance not previously projected. The cost to reclaim this <br />additional 1.0 acre diversion ditch has been calculated at $2,014. The current surety bond for Trapper Mine <br />includes an excess of $119,530 above the worst case scenario for the five year bond term. Hence, $I 17,516 <br />of excess bond still exists. Map M-51 also shows new projected culvert A-9 which has been engineered to <br />safely pass water under the North A Haulroad in accordance with the applicable design storm event (enclosed <br />Table 4.8. l ). <br />2. Ashmore Pit Mining Sequence Chanee. Map M-IOA, enclosed, outlines a small area to be mined in 1993 that <br />was originally projected to be mined in 1994. The area in question is shown as pit disturbance within the <br />1993 topsoil stripping area. (The coresponding area is deleted on the enclosed M-lOB map.) Coal will be <br />mined from this small area in 1993 so that a haulroad can be built across the site later in 1993. This mining <br />sequence change will avoid the necessity of disturbing this haulroad a[ a later date to extract coal from the <br />site. This area of shallow overburden will be mined with scrapers. <br />Please contact me if you have any questions or requve further information concerning this revision. <br />Sincerely, <br />`~ r `.~/ ~ri/i <br />Forest V. Luke <br />Manager of Environmental AtTairs <br />Fvun <br />IDM~wucoel <br />Enclosure <br />c file <br />P.O. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />