Laserfiche WebLink
9'N NICOAL <br />A? COMPANY L.L.C. <br />A Subsidiary of Arch Westem Bituminous Group, LLC <br />February 11, 2010 <br />Mr. Tom Kaldenbach <br />Colorado Division of Reclamation, Mining and Safety <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />West Elk Mine <br />P.O. Box 591 <br />5174 Highway 133 <br />Somerset, CO 81434 <br />(970) 929-2200 <br />Fax(970)929-5050 <br />itec . <br />Fa , Vto <br />n?179 a 0W q, <br />f8 0atlon <br />Re: Mountain Coal Company, LLC, West Elk Mine; Permit No. C-1980-007; Minor <br />Revision No. MR-362, Addition of Emergency Back-up Generator for Mine <br />Ventilation Fan <br />Dear Mr. Kaldenbach: <br />Mountain Coal Company, LLC (MCC) submits this letter, application form and revised Map 53B in <br />application of Minor Revision No. 362 (MR-362) to its Mining and Reclamation Permit No. C-1980- <br />007. This revision is to add an emergency generator system for the mine ventilation fans as <br />required by the Mine Safety and Health Administration to provide back-up power to the forced air <br />ventilation system should there be a loss of electrical power. <br />As shown on the attached map, the generator will be located on the Sylvester Gulch fan shaft <br />bench to the north of the new Nitrogen Supply facility built last year per MR 353. This 2250 kW <br />generator, fuel tank, and transformer and control unit are self-contained skid-mounted steel units <br />that will be set upon a reinforced concrete pad measuring approximately 78' long, 15' wide, and <br />18" thick. The generator unit will be housed in a 31' long, 10'6" wide, and 12'3" high steel box <br />housing set atop the double-walled steel fuel tank unit that will measure 34' long, 10'8" wide and <br />4'10" high. The transformer and control unit for the generator will be set on the slab at the west end <br />of the generator and tank units. The transformer and control equipment will be housed in a 40' <br />long, 8' wide and 9'6" high steel box unit. <br />Another, smaller 50kW control power generator will be mounted on top of a double-walled fuel tank <br />and will measure 10'9" long, 34" wide and 69" high. This unit will be located on a reinforced <br />concrete slab measuring 11' long, 4' wide and 12" thick to the west of the shaft #2 motor control <br />building between the fan intake cones. <br />MCC would appreciate the Division's assistance in providing reclamation estimates and associated <br />bond readjustment calculations for this project. Please contact me at (970) 929-2238 or by e-mail <br />should you have questions regarding this submittal. <br />Sincerely, <br />Kathleen G. Welt, <br />Environmental Engineer I I I <br />cc: Doug Nolte -MCC <br />Availability of Records File <br />Joanne Williams - Gunnison Co.