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round operation, with the exception of early spring and mid-fall <br />~, when ground conditions are unfavorable. Between one and three <br />rotary drill rigs capable of rotary drilling and spot coring the <br />' coal interval of interest will be utilized. The primary <br />circulation medium will be water with drilling mud. In the event <br />that subsurface conditions allow, air or an air/foam medium may <br />be utilized. Water for drilling will be obtained from local <br />' stockponds. Drilling operations are planned to commence <br />immediately upon approval and continue as weather and ground <br />conditions allow. It is currently planned that drilling will be <br />' conducted on a twenty four hour basis in order to minimize the <br />total time required. It is anticipated that access road <br />maintenance will be minimal, as the intent is to conduct the <br />' majority of the exploration efforts during the dry months. In <br />the event that mid-winter drilling is necessary, gates specified <br />by Colorado Division of Wildlife will be kept locked to preclude <br />public use, and any areas of critical winter range for elk will <br />' be avoided, as so directed by CDOW. <br />' Estimated Size and Depth of Holes <br />Holes will be a nominal 6.25" in diameter and vary in depths from <br />' 530 to 2300 feet. The anticipated total depths and location of <br />each hole are presented in Table 1. <br />It is anticipated that the floor, roof, and coal seam of interest <br />will be cored for each hole. These cores will be characterized <br />for coal quality and rock strength parameters. It is <br />anticipated that the majority of holes will extend approximately <br />30 feet below the Wolf Creek Coal Seam with some extending into <br />the top of the Trout Creek Sandstone. <br />' Geophysical Logging <br />Geophysical logging of all drill holes is planned. The suite of <br />' logs run on each hole may include: density, gamma, caliper, <br />neutron, focused electric, sonic, verticality, temperature and <br />conductivity. <br />' Equipment <br />' Rotary drilling and coring at the sites will be completed using a <br />rubber-tired, truck mounted drilling rig. Support equipment may <br />consist of a water truck, pipe truck and/or pipe trailer, rig-up <br />' truck, an air compressor, core trailer, and two or three 4 X 4 <br />pickups for the drill crews and company representatives. This <br />assembly is generally referred to as a "drilling unit". One to <br />' three drilling units may be utilized at any one time during the <br />completion of this project. <br />19 <br /> <br />