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ribbon <br />1 c°°'~. <br />cornpdny~ <br />BLUE RIBBON MINE BENCH STABILIZATION <br />QUARTERLI' CERTIFICATION <br />blue ribbon coal company <br />p.o. box 1352 <br />palisade, Colorado 81528 <br />(303) 464-7951 <br />In accordance with Colorado Mined Land Reclamation's Rule #4.09.1, this certification <br />was prepared to cover the third quarter and the end of the mine bench stabilization <br />project at Blue Ribbon Coal Company. This certification covers the period <br />of time from the last certification, June 17, 1986, to completion of revegetation <br />October 25, 1986. I, Larry M. Reschke, P.E. continued to be Project Engineer <br />for this period of time. <br />The work done during this period of time was as follows: completed 4' of <br />cover, completed rock placement around the toe, installed a drain around <br />the toe and completed seeding and mulching. <br />At the end of the 1985 construction season a small area at the south end <br />of the middle bench remained to be covered with 4' of alluvium. This cover <br />placement was completed between June 26 and July 9, 1986. Material for this <br />cover was moved from a new pond being constructed at the south end of the <br />bench. A D-8 dozer was used to place the approximately 1500 c.y. of material. <br />No topsoil was placed on the alluvium. Diagram 2 is attached to show the <br />final contours. <br />The remaining rock toe was completed once access was no longer needed to <br />the bench outslope. This work included placement of rock in a 20' segment <br />at the south end and a 40' segment at the north end. <br />The underdrains were connected with a ditch around the toe July 11, 1986. <br />This ditch was also designed to collect runoff from the bench outslope and <br />transfer it to the new pond at the south end of the bench. <br />Seeding, fertilizing, mulching and netting was done on the area where new <br />cover was placed in 1986 during the third week in October 1986. Attached <br />is a copy of the shrub seed mix used. The seed was broadcast at a rate of <br />25#/acre. Fertilizer was applied at a rate of 100#/acre for 18-46-0 fertilizer <br />and 50#/acre ammonia sulfate. Oat straw was applied and netted at a rate <br />of 1.5 tons/acre. <br />