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East Taylor Fill Inspection Certification <br />On February 5, 2008, I inspected the area in which the East Taylor Excess Spoil Fill is being <br />constructed. The purpose of this inspection was to observe the completion of the topsoil <br />stripping and the completion of the underdrain trench construction. This inspection is <br />necessary to satisfy the requirements of CDMG Rule 4.09.10 (1 a) and Rule 4.09.1 (1 b). <br />All topsoil stripping within the footprint of the spoil was completed prior to or during the <br />summer and fall of ,2007. During the week of January 28, 2008, the underdrain trench was <br />excavated by dozer. The trench has a bottom width of 24 feet and a depth of at least 9 feet <br />throughout the entire profile. The main valley drain closely matches the design alignment <br />within the area excavated. <br />Design requirements for the spoil pile is addressed in Volume 13, Exhibit 21, Item 1, <br />Introductory Letter. <br />In addition to the main valley drain, a lateral drain to seep 17-143 has been excavated. This <br />lateral drain has also been built to a bottom width of 24 feet <br />On February 5, 2008, following excavation of the underdrain trench, the centerline was <br />surveyed. Field measurements were also taken to verify the bottom width of the trench. The <br />attached Table 1 lists the stationing, coordinates, and elevation for the trench centerline. <br />I am a Registered Professional Engineer in the State of Colorado and a representative of <br />Environmental Solutions, Inc, P. O. Box 2996, Cheyenne, Wyoming. Being familiar with the <br />Colowyo operation and the coal program permitting process in Colorado, the construction <br />activities related to the West Pit Excess Spoil Fill are in conformance, to the best of my <br />knowledge and experience, as specified in the Introductory pages and the associated report <br />found in Volume 13, Exhibit 21, Item 1 and other applicable requirements of the approved <br />permit documents, a portion of CDMG Permit~~~~~~r19. <br />~~~~~PpO L ~ C -•~~i~~ <br />~........~ F <br />o ~.•_ c. pfr~~~oyso <br />32257 Z ~ ~ <br />~!~isS~ONAL ~~~~~ <br /> <br />.E. No. 32257 <br />Zl7lD8 <br />xc: Mr. Kurtis Blunt, Colowyo Coal Company, L. P. <br />cf 17.15.1 <br />cf 24.20 (East Taylor Fill) <br />