Laserfiche WebLink
OXBOW MINING, LLC <br />3737 Hwy 133 P.O. Box 535 Somerset, Colorado 81434 USA Tel (970)929 -5122 Fax <br />(970)929 -5177 <br />June 21, 2011 <br />Mr. Mike Boulay <br />Environmental Protection Specialist <br />Colorado Division of Reclamation, Mining and Safety <br />101 South 3` Suite 301 <br />Grand Junction, CO. 81501 <br />Re: Oxbow Mining LLC, Permit No. C- 1981 -022 <br />TR -72 Application for Additional Gob Vent Boreholes. <br />Dear Mr. Boulay, <br />• Page 1 <br />RECEIVED <br />JUN 2 7 2011 <br />Division of Reclamation, <br />Miring and Safer <br />The purpose of this letter is to request Technical Revision No. 72 to the Oxbow Mining LLC <br />(OMLLC) Permit No. C- 1981 -022. This TR provides for the modification of the presently <br />approved gob vent borehole plan for the three north panels LW -17, LW -18 and LW -19. <br />The Division should recall that Oxbow has previously obtained the major approvals of the <br />present LW -17, LW -18 and 19 during the TR -63, 64 and 65 revisions. Unfortunately, recent <br />ground control and methane gas control issues for the mine have resulted in modified mine plan <br />changes imposed by the Mine Safety and Health Administration (MSHA). Specifically, MSHA <br />has required that large barrier pillars be placed between Panels 17, 18 and 19. The mine plan <br />changes cancelled the ability of many of the presently approved GVB's configuration to <br />effectively vent hazardous mine gasses. The result is that we are submitting this TR to modify <br />many of the GVB pad locations and roads. <br />Many of the GVB modifications will occur on private surface and many of the modifications will <br />be located on surface managed by the USFS within the Springhouse Park IRA. Unfortunately, <br />the speed with which the USFS approves projects in IRAs adds an additional layer of complexity <br />in the revision review and subsequent approval process. This TR -72 will deal exclusively with <br />GVB modifications on the USFS managed lands. We will also be submitting a similar TR -71 to <br />address the modifications made to private surface. <br />The additional sites are shown on the attached Drawing 2.05 -M1, Sheet 6 of 6, "General <br />Facilities, Gob Vent Boreholes." In addition we are submitting revised Exhibit 2.04 -E3, Item 9 — <br />Methane Drainage Well Information. <br />