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~. <br />[ ..l <br />I f. _. n <br />j~~~ ~ <br />Derry Ferguson <br />3333 So. Bannock <br />Englewood, Colorado 80110 <br />FAR No. 761-2362 <br />Ref; Carbon Junction Mine ProjeCL <br />Dear Derry, <br />Aug<iat 20, 1990 <br />I have tabulated t11e calculated volumes to indicate my adjtlst.ments of <br />base to surface. Photo checks of the enlarKed IISGS map indicate the base <br />USGS contours in the fill area a possibly +10 feet of original. terrain datum <br />and reflects my calculated volume - to fill area; also the adjustments of the <br />volumes in the North pit relate to fill area. The adjustment indicates an <br />expansion factor of approximately 30%, Avecage base data + adjusted data = <br />approximately 22%. <br />Salute, <br />C ~ ~ ' <br />~ ~ (, <br />Jack W. ~6~ann <br />90 08120 09:18 <br />• <br />a ooooeao <br />• <br />Alli I'I lllltl !;I IIf VI. ,~". 1'+ til 1)ISnI I Id(~I I'dl I li ll'!(i irn. <br />PHOTOGRAMMETRY & ENGINEERING <br />0.0.00+ ]]]B (]. YIIII Jum Gun, Cul u.eJu B1b0/ / Ph 2/4~G7ti4 <br />02 <br />