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Robert Jarrett emphasized the necessity to minimize the number of <br /> constrictions and bends built into the reconstructed channel . <br /> These types of conditions would enhance the potential of a debris <br /> flow to overtop the reconstructed channel, causing a new channel to <br /> form. Mr. Jarrett also emphasized that special attention must be <br /> paid to dropping the Dutch Creek flow into the Coal Creek channel . <br /> It will be necessary to build a number of drop structures in this <br /> area to safely convey the flow from Dutch Creek into Coal Creek. <br /> My notes indicate that once the point of diversion is established, <br /> the OSM Western Support Center will provide engineering support for <br /> the design phase of this project. <br /> Regarding reclamation of the highwalls, the Division and OSM <br /> requested that Mid-Continent provide more cross sections and more <br /> documentation regarding the availability and utilization of <br /> additional backfill material . Mid-Continent responded to this <br /> request by providing this office and the OSM additional <br /> information. If your office intends to submit any comments, please <br /> direct them to this office. <br /> Regarding the road reclamation plan, I met with Mid-Continent <br /> Resources and the U. S. Forest Service at the mine on July 6 and 7, <br /> 1994. At that time, I informed the company that no road <br /> reclamation work could occur until a formal plan had been accepted <br /> by the State. The general reclamation concept is to construct a <br /> stable bench configuration which averages 22 feet in width over the <br /> mine site, with revegetated inslope, backfill , bench and outslope <br /> surfaces . As we have previously discussed, the State and the OSM <br /> are using a backfill figure of 6 cubic yards per linear foot of <br /> road surface for purposes of arriving at a reclamation cost <br /> estimate figure. After walking much of the road system, it is <br /> apparent that in some areas , backfilling of the road inslope will <br /> leave a bench much less than 22 feet, and in others , the bench may <br /> be over 22 feet in width. Therefore, the 22 feet wide average <br /> width appears to be a realistic reclamation goal . I have devised <br /> a segment by segment road reclamation plan for the Number 5 Mine <br /> fan access road which will be available for review shortly. The <br /> Road G (Number 5 Mine haul road) plan is near completion, following <br /> one more site visit. This plan will also be available for review <br /> shortly. <br /> The overall reclamation concept for the roads is to handle runoff <br /> from the roads in such a manner so that erosion and resultant <br /> sedimentation are minimized, while attempting to achieve the <br /> average 22 feet wide bench configuration. The majority of the <br /> roads will be sloped to the outside in order to promote immediate <br /> drainage of run-on while minimizing the concentration of water into <br /> specific channels. Large drainage structures , termed cut outs, <br /> will be constructed at regular intervals on steeper gradient roads <br /> in order that water not be concentrated for long intervals. These <br /> treatments will provide for minimal water retention time on the <br /> benches, thus reducing the potential for continued large scale <br /> erosion. In places where overland flow is undesirable, a channel <br /> will be built to convey water to a natural drainage . The benches, <br />