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III. COMMENTS -COMPLIANCE <br />Below are comments on the inspection. The comments include discussion of observations made <br />during the inspection. Comments also describe any enforcement actions taken during the <br />inspection and the facts or evidence supporting the enforcement action. <br />Channel "G" had been riprapped, but will require re-work to conform with design channel specifications, <br />incorporating an appropriate mix of smaller sized riprap, proper channel cross-section, etc. Large size <br />riprap currently on-hand will need to be broken up to obtain the desired size gradation; track-hoe rock <br />breaker attachment had not yet been delivered to the site. Additional grading is warranted at the upper <br />end of the channel to ensure that all flow down the undisturbed channel above is captured and funneled <br />into the constructed riprap channel. It was discussed on July 5 that final depth of constructed channels <br />needs to incorporate specified free-board, and that the design specifications the Division will use to <br />assess the construction compliance are listed on the "Ditch Design Summary Master List", permit page <br />M(vii)-1 i. <br />• Subsequent the inspection of June 22, Channel "G" had been further excavated and further extended <br />down slope, as far as could be safely achieved. Large riprap "energy dissipaters" had been set in place <br />at the toe of the channel, and this approach will need to be taken at several of the steep channels that <br />do not fully extend to the native channel at the toe of the slope. <br />All of the permanent channels along the canyon section of the road had been "roughed in" along their <br />lower segments (down-gradient of the backfill bench), with the exception of the lower-most Channel "A", <br />for which excavation had just recently been initiated. Two additional riprap channels will be constructed, <br />based on field conditions which appear to warrant riprap channel installation. The two channels are <br />located between approved Channels "A" and "B", and would be designated "A1"and "A2". Following <br />completion of the grading and channel construction, operator will need to submit a technical revision <br />application with certified "as-built" contours and specifications, addressing any divergences from the <br />approved plan (such as the additional riprap channels, and any changes in channel slope, length, or <br />other design parameters necessitated by field conditions). The "as-built" designs will need to <br />demonstrate compliance with applicable regulatory criteria. <br />Grading work with dozer and track-hoe was continuing along the canyon section of the access road, <br />down the road (west) from Channel "G". West of Channel "G", the top of the compacted backfill bench <br />will be shaped to blend in to the cut slope, to eliminate the "terrace" configuration of the upper-most road <br />segment. Where the cut-slope is not eliminated by the backfill, cut slope crests will be cut back and <br />rounded for blending, to the extent practicable. Similarly, the crest of remnant fill slopes will be rounded <br />off, to eliminate any remaining abrupt slope transitions. <br />Lower Road Areas <br />• Preliminary ripping had been conducted along a section of the lower road. Additional ripping is <br />necessary in the previously ripped sections to provided a properly loosened seedbed along the entire <br />width of the area to be seeded. Ripping will be necessary along the length of the road on BLM property <br />wherever the non-vegetated travel width exceeds 8 feet. <br />• By July 9, the lower road topsoil stockpile area had been properly graded, roughened and bermed; silt <br />fence had not yet been installed. Perimeter livestock fencing yet to be installed. <br />Coal Waste Disposal Area <br />• The waste disposal cell itself had been cover soiled, topsoiled, and extensively roughened. Ditches <br />were in place. The inlet to culvert CMP-2 was partially blocked by loose soil, and needs to be cleaned <br />out. <br />The waste disposal area topsoil and cover soil stockpile areas had also been graded and roughened; <br />final graded portion of the cover soil stockpile area had been topsoiled and roughened. The upper <br />4 <br />