Laserfiche WebLink
~N <br />_- = Fl1ELS-tfG1R <br />INC. <br />A Subndiaq• <br />-_ of <br />- - lL'eslern Fuels <br />III IIIIIIIIIIIIIIII <br />[, sss <br />I,t~~I~,CL~ <br />aPR17199: <br />Mined Land <br />Recta-.,,f;n~ r,• . . <br />April 14, 1992 <br />Ms. Janet Binns <br />Reclamation Specialist <br />Colorado Mined Land Reclamation Division <br />1313 Sherman Street <br />Denver, Colorado 80202 <br />RE: MINOR REVISION TO DRILL AN EMERGENCY VENT <br />HOLE #LW5-6B, DESERADO MINE, PERMIT NO. C-81-018 <br />Dear Ms. Binns: <br />This is a follow-up of my telephone conversation today with Mr. Steve Renner, Coal Supervisor - <br />CMLRD. <br />It has become necessary that a new vent hole LW5-6b be drilled immediately to alleviate methane gas <br />build-up al the longwall panel 5 (LW5) face. The existing vent hole LW5-6 has failed to communicate <br />with the gob, and thus is not venting methane. The methane build-up at the face has forced the mine <br />to stop production frequently until the methane level decreases to a legally allowed safe level. Please <br />see the attached Map 138 for the hole location. The proposed hole LW5-6b will be about 1035 feet <br />deep and 8-5/8 inches in diameter. <br />As approved by Mr. Renner, WFU will immediately proceed to construct the drill hole pad. Existing <br />access will be used for transporting the drill rig and crew. Drilling should start at latest by Thursday April <br />16, 1992. The drill pad, about 60' X 60' in area, will be prepared by removing vegetation and topsoil to <br />be used in reclamation. Pits will be dug to contain drill cuttings and fluids produced while drilling. Pits <br />will be pumped out and backfilled and the site recontoured immediately after hole completion. <br />WFU has an adequate bond cushion with CMLRD. Please deduct the performance bond amount as <br />computed by CMLRD from the existing cushion. A copy of the performance bond calculations should <br />be sent to us so we can update the bond calculation pages of the permit. <br />8wte #305 <br />405 Urban Sueet <br />lakeeood, Colorado 80228 <br />Telephone 30i/988-9616 <br />Telecopier i0,Vy8G8147 <br />