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//~ Kennecott <br />~ . Energry <br />Co(oavyo CoalCompanyL.~ ~ ~~' <br />Memorandum <br />RE~~tVED <br />JUL 17 2002 <br />FOR: File <br />Oiuisian of Minerals and Geology <br />July 10, 2002 <br />Rest Pit Fill Inspection Certification <br />On June 30, 2002, 2 inspected the area in which the West Pit Excess Spoil Fill is <br />being constructed. The purpose of this inspection was to observe the surface <br />rock drain that borders the 3:1 Excess Fill Slope; inspect the areas dumped to <br />final grade below the 7400 dump elevation; inspect the re-vegetation on the fill <br />surface and to inspect the fill for areas of water seepage or surface drainage, <br />inspect the final grade slopes below the 7300 elevation of the Excess Fill Slope, <br />and to satisfy the requirements of CDMG Rule 4.09.1(lla). <br />During the inspection it was observed that the condition of the fill was <br />good, no seeps or springs were noted. The collection ditches at the 6950, 7050 <br />and 7150 elevations all were in relatively good shape. No water of any kind was <br />noted during the inspection. Some standing water was noted by the toe drain. <br />Small cracks were noted above the 7350 elevation on the part of the fill that <br />topsoil has not yet been placed, but appeared minor in nature. <br />I am a mining engineer, registered in the State of Colorado, and <br />experienced in the construction of rock and earthen projects for the purposes of <br />mining activities. <br />To the best of my knowledge, based on my professional expertise the West <br />Pit Excess Spoil Fill has thus far been constructed in conformance with the <br />prudent state-of-the-art methodology for earth and rock fill construction, as <br />specified in pages la-2 through Ia-4, Exhibit 19Ib, and other applicable <br />requirements of the approved permit documents, a portion of CDMG Permit C-81-019. <br />'F~~OSE'ephen R. Hinke~er <br />25436~~ ~° Registered P.E. 25436 <br />~> <br />Date <br />