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Three compaction tests were performed on sub-area 2/3/4 during March. All areas tested <br />exceeded the required Proctor level of 90%. <br />The topsoil and subsoil piles for sub-areas 1, 2-3, 4 and Sa have been seeded and are stable. <br />Vegetative growth appears adequate to control erosion on [he piles with [Ite exception of the very <br />tops of the Sa soil piles. These piles received additional material this pas[ summer during the <br />enlargement of the sediment ponds and the refuse pit combination. The areas that received the <br />new soil are essentially flat and were left rough to retain moisture. Tltey were seeded this winter <br />and harrowed during March to further stabilize the piles. <br />Quarterly monitoring of RP-4 refuse pond embankment has continued, and to date appears to be <br />stable. <br />To the best of my knowledge, based on my professional expertise, the permanent refuse structures <br />at tfte Deserado mine are being constructed in conformance with the prudent state-of--the-art <br />constnution practices as they relate to coal processing waste bank construction. Further, the <br />sVuc[ures are being constructed in compliance with the approved design, as specified within <br />Section IILB.3 of the approved permit documents and depicted on Maps 76, 77, 82 and 83 and <br />other permit documents or maps as amended from time to time. <br />1 certify, based on my field observations and those observations of my qualified designates and <br />professional investigations, as detailed above, that the permanent refuse disposal structures at <br />Blue Mountain Energy, Inc., Deserado Mine, located in Rio Blanco County, Colorado, are being <br />constructed in compli with the design approved as a portion of Pen»it No. C-018-81, issued <br />by [he Coloradow~~ E1~IL4 _ ~ erals and Geology. <br />Respectful) <br />~'l/ >.~ <br />William C. Lepr . AL~`- <br />Project Engineer <br />Colorado Registered P.E. No. 30263 <br />xc: Murari Shrestha <br />Jeff Dubbert <br />Scott Wansted[ <br />File <br />