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ii i i ii i ii i iiiiii iii; <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmenl of Natural R?sources <br />1313 Sherman 51., Room ~I S <br />Denver, Colorado 80?03 <br />Phone: 13031 866-1567 <br />FA.1: (303; A3?-8106 <br />DATE: April 29, 1997 <br />TO: Mike Boulay / <br />FROM: Susau Burgmaier <br />RE: West Elk Mine (C-80-007) <br />~'„-- <br />I~~ <br />DEPARTMENT OF <br />NATURAL. <br />RESOURCES <br />Roy Romer <br />Governor <br />lames S. Lochheed <br />Executive Director <br />Michael B. Long <br />Division Dveaor <br />I have reviewed MCC's responses to my second round of adequacy questions. All of their responses <br />were acceptable, with the following exceptions. <br />18. MCC informed DMG that, of the structures shown on the "General Arrangement of Site <br />Layout Showing Sinking Facilities and Services" drawing, only three foundations would have <br />[o be removed (no structures). The foundations noted by MCC include two hoist foundations. <br />The drawing shows two hoists at each of the intake and exhaust shafts, a primary sinking hoist <br />and an emergency hoist. Will there only be concrete foundations at two hoists total, or two <br />a[ each shafr? <br />MCC also states that all other facilities to be removed have been described in information <br />previously submitted. After reviewing [he material, we aze still unable to locate the following <br />information. Please provide the information and include it in the permit application package, <br />or provide its location in previous submittals. <br />a. What are the dimensions of the ventilation fans and standby generators? Will there be <br />foundations and/or footing associated with these structures? <br />b. Are there concrete landings at the stairway bases, and if so, what aze the dimensions? <br />c. Will there be arty footing for the foundations at the shop, compressor, and hoists? <br />d. What is the height and diameter or width and length of the 74 steel columns at the <br />substation? <br />e. Please include the location of the grounding grid location on at least one of the maps <br />which depicts the substation. <br />f What is the diameter of the 6~' poles for the transmission line? What are the base <br />dimensions of the 150' lattice-type steel structures? Wha[ are the base dimensions of <br />the 80' self-supported steel pole structure? <br />g. MCC notes that there will be 5 tons of equipment associated with the distribution line, <br />and 100 tons of equipment at the substation. What sort of equipment will this be, <br />where will it be located, and what support equipment (crane, cherry picker, etc.) might <br />be required to remove it? Would any of this equipment be considered hazardous or <br />require special handling? <br />h. What aze the dimensions of the switchgears which will be housed in the switchgear <br />buildings? <br />i. What are the dimensions of the flocculant storage building? Will there be a foundation <br />or footing? If so, what are the dimensions? <br />Christine Johnston (MCC) gave me all of the shove information by telephone on April 28. 1997, but <br />MCC still needs to include the information in the permit application package. <br />