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I inspected the structure daily to verify the pond's conditions during construction and upon <br />• completion for the as-built. Our consultant, Montgomery Watson, was here to do <br />compaction testing, soil analysis, etc. Messrs. Jay James, Tom Leidich, and John Pellicer <br />were also on the site at several critical occasions during the construction of this pond, as <br />well. Their summary report for this project is located in Addendum 13-5F-D. I, Michael G. <br />Altavilla, am a 1984 graduate in mining engineering and I have been a Registered <br />Processional Engineer in Colorado since August 17, 1992. <br />The purpose of my inspection and certification was to ensure proper construction of <br />Sedimentation Pond 016 and to satisfy the requirements of Rule 4.05.6110) of the <br />Colorado Mined Land Reclamation Board. The material was placed in the embankment to <br />meet or exceed the design specifications (see Addendum 13-5F-E for compaction <br />informationl~ This as-built report confirms the construction of this structure meets or <br />exceeds the Rules and Regulations of the Colorado Mined Land Reclamation Board. The <br />structure is stable, evidencing no indications of slope instability. <br />To the best of my knowledge, based upon my professional expertise, and to the extent <br />possible, Pond 016 at the Seneca II-W Mine was constructed in accordance with the <br />prudent state-of-the-art methods for earthen embankment construction. Further, the <br />structure was constructed in compliance with the approved design, to the extent possible, <br />• as specified in Attachment 13-56 of Seneca Coal Company's approved mine permit. Minor <br />field adjustments in horizontal and vertical alignment were necessary during construction <br />to compensate for unanticipated natural conditions, limit the disturbed area, and construct <br />a structure consistent with the existing and reclaimed topography. <br />To the best of my knowledge and belief, field adjustments made during construction to the <br />structure are in conformance with the Rules and Regulations in the intent of the approved <br />design plans and specification (see Exhibit 13-8A, Sheet 1 of 21. <br />JN 21 2001 <br /> <br />13-5F-3 Revised 06/01 <br />