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Mike Boulay -4- May 22, 2008 <br />CAM - There are no anticipated ventilation shafts during the life of the operation as <br />defined on amended page 2.05-2. <br />10. DRMS - The application did not contain plans for methane degasification if needed. <br />Please update the application with a discussion of methane degasification. If <br />appropriate, the application should be updated with plans for methane de-gas wells. <br />CAM - It is unlikely methane degas wells will be required during the life of the operation <br />as defined on amended page 2.05-2. This is because the coal seam is not saturated. <br />Methane is trapped in the coal under saturated conditions and released as the coal is <br />extracted. In dry conditions, methane escapes from the seam over the eons so less <br />methane is released during mining. <br />11. DRMS - It would be helpful to have a single map showing all of the surface disturbed <br />area in addition to the detailed maps already submitted (15-1 through 15-9). Please <br />update the application with a surface disturbed area map at an appropriate scale <br />(1 "=1000'). <br />CAM - A new map 15-10 was developed to show all of the surface disturbed area. At a <br />1"=600' scale the map shows the arrangement of the surface facilities but not in much <br />detail. Enclosed is new Map 15-10 to be incorporated into the permit application <br />package. <br />Sincerely, <br />J. E. Stover, P.E. <br />Consulting Engineer <br />Enclosures TOC Page iii, Volume I Page 2.05-2, Volume II Book 1 of 2 Map 15-10 <br />Volume III Book 1 of 2 Tab 6 Geochemical Data <br />Volume III Book 2 of 2 Tab 14 Mathews Letter <br />Cc: Mike Boulay, GJ Office <br />Marcia Talvitie, Durango Office <br />OSM <br />BLM