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III IIIIIIIIIIIIIIII <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />DeparlmeN of Natural Resources <br />1513 Sherman 51., Rrwm ?15 <br />Denver, Colorado NO?OJ <br />Phone 1303) 866-3567 <br />FAX: 13(13) A3?-8106 <br />DATE: January 6, 1997 <br />TO: Erica Crosby <br />FROM: Dan Mathews C <br />RE: Munger Cost Estimate Items, TR-11 <br />Permit No. C-81-020 <br />~~~ <br />DEPAR'T'MENT OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />Governor <br />I, men S Lochhead <br />Execulioe Director <br />Michael B Long <br />Drv ismn Director <br />I took some measurements at the Munger Loma Loadout per your <br />request on December 31, 1996, to verify volumes for cost estimate <br />purposes. I concur with the operator's estimate of coal stockpile <br />volume of 236 cubic yards as listed on Task 15, page 17 of the <br />amended application. However, I estimated a total volume of 819 <br />cubic yards of coal fines on the surface of the pad area (based on <br />an area 650'x60', with average coal fines depth of 6", and a second <br />area 350'x30', with an average coal fines depth of 3"). Also, <br />based on a 1 foot surficial layer of coaly material on each of the <br />three ramps, I estimated a total of 314 cubic yards of coaly <br />material on the ramps (Ramp 1: 75'x60', Ramp 2: 60'x40', Ramp 3: <br />45'x35'). <br />In all, I estimate a total volume of 1,369 cubic yards of coaly <br />material, versus 547 cubic yards estimated by the operator. The <br />estimate on page 17 indicates that "gravel exposed after the coal <br />has been removed [from the ramps] will be spread along the siding <br />to provide a firm base for siding users. I estimate a total volume <br />of 645 cubic yards of non-coal material in the three ramps. <br />Please let me know if you have any questions. <br />PS. With respect to the revegetation failure rate, I believe 25$ <br />would be appropriate, given the fact that precipitation ie <br />significantly higher than at other Grand Junction Mines (such a~ <br />Fruita and Roadside), soils are generally of good quality, and the <br />major portion of the revegetation will be on north facing slopes. <br />Previously conducted interim vegetation on the road outslopes and <br />the soil stockpiles has been quite successful. <br />