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• • iii iiiiiiiiiiiu iii 999 Assessment Conference This assessment conference is being held for NOV C-95-016 which was issued to Mountain Coal Company on May 26, 1995 for three items including: 1. Failure to construct and Maintain appropriate and REQUIRED sediment control measures to reduce erosion and to control sediment 2. Failure to maintain required ditches (channels) to convey runoff from the fill surface 3. Failure to separately remove and segregate all topsoil prior to disturbance of areas affected by mining operations Specifically, for item l a silt fence is required to be installed at the Lone Pine Gulch ventilation shaft and development waste pile to control erosion and treat runoff from this site. A site inspection was conducted on April 25, 1995 which revealed that the silt fence was not properly installed by not being keyed into or anchored into the soil. The operator was informed of this and agreed to properly install the silt fence. During a follow-up inspection conducted on May 10, 1995, the area below the fan site had been re-installed but the waste pile silt fence was still not properly keyed into the soil. Therefore, part one of the violation was issued. PHOTOS Also related to the waste pile, the diversion channels as required by the permit and rule 4.10.3 and 4.09.2(7) were not being properly maintained. These channels are required to safely convey water off of the fill surface. PHOTO The final item in the violation was written for failure to salvage topsoil prior to disturbance. Material that was being disposed of at the pile had been allowed to be placed on an area prior to stripping topsoil. Basically what occurred is that the waste material was spread out over a larger area than had been previously prepared. PHOTO The following permit text and accompanying drawings of the lone pine waste pile illustrate the requirement to have the silt fence and diversions and whF-P thy. s~' fen~• ~ersion channels are to be located.