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To date, a total of 2,031,237 tons of refuse have been placed in sub-area 2-3, a total of 1,600,220 <br />tons of refitse have been placed on sub-area 4, and a total of 417,829 tons of refuse have been <br />placed itt sub-area Sa. <br />No compaction tests were conducted this quarter as only stockpiling of refuse occurred. <br />Spreading of refuse and compaction will be conducted when conditions are more conducive to <br />obtaining optimum compaction. <br />The topsoil and subsoil piles for sub-areas I, 2-3, 4 and Sa have been seeded and are stable. <br />Vegetative growth appears adequate to control erosion. <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 the Deserado mine are being constructed in conformance with the prudent state-of--the-art <br />construction practices as they relate to coal processing waste bank construction. Further, the <br />structures are being constructed in compliance with the approved design, as specified within <br />Section III-20 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, Ittc., Deserado Mine, located in Rio Blanco County, Colorado, are being <br />constructed in compliance with the design approved as a portion of Permit No. C-O18-81, issued <br />by [he Colorado Division of Minerals and Geology. <br />Respectfully, <br />- ~~/_/ - - s/~~~ <br />%'-_ bVillialn C'Lepro, P.E. <br />-~! -- Project Engineer <br />., ti-..-. <br />-. ---Colorado Registered P.E. No. 30263 <br />xc: Murari Shrestha <br />Jeff Dubbert <br />Scott Wanstedt <br />File <br />