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inclinometer were all fairly consistent with design slope information. Only two channel segments had <br />measured slopes substantially greater than the design information. A representative slope of 29% was <br />measured in the upper portion of PM-8, the design for this channel indicates that the slope in the <br />upper portion ranges from I5-22%, and a representative slope of 40% was measured in the steep mid- <br />portion of PM-4; the design for PM-4 indicates slopes range from 31-33%. This is not deemed <br />significant since these were short segments of the overall channels and the instrument used is <br />designed to provide a Feld check only. It was determined that all channels met the minimum design <br />criteria, and many of the channels were overbuilt with regazd to size (bottom width and side slopes), <br />and riprap requirements. <br />All postmine drainage channels (except PM-8, PM-Sa, PM-Sb in the East Wadge Pit area) were <br />determined to be stable and functioning properly. Several post-mine drainage channels will require <br />maintenance to repair erosion or place additional armoring. These locations identified along post- <br />mine drainages aze not deemed significant enough to exclude the azeas from release of Phase I bond <br />liability; however, SCC should repair the erosion to ensure long-term stability of the channels. SCC <br />should use hand maintenance for the erosion azeas to the extent possible to avoid unnecessary <br />equipment impacts to reclaimed areas. As noted in the Phase I bond release inspection report (see <br />inspection report dated August 24, 2006) portions of PM-1, PM-2, PM-4, PM-6, PM-10, PM-22, and <br />PM-23 will require maintenance. <br />One significant azea of concern was identified and will be excluded from the Phase I bond release. <br />This area includes approximately ]25.8 acres and is referred to as the East Wadge Pit azea. The East <br />Wadge Pit was one of the last azeas to be reclaimed at Seneca II Mine. It includes all disturbed <br />ground east of Road C above and below the location of the fenced shrub plot and surrounding shrub <br />plot study azea down to and including Post-Mine Channels PM-8a, PM-8b, and PM-8. A diversion <br />ditch was installed as an alternative sediment control feature above the shrub study area to protect the <br />shrub plot from erosion and to divert water towazds Post-Mine Channel PM-8. The inspection of this <br />area began above the diversion and proceeded down PM-8 to the South Road and then back up PM- <br />8aand PM-8b. The following problems were noted with regard to surface water runoff and sediment <br />control and overall stability of the reclaimed East Wadge Pit. <br />A lazge gully has formed above the diversion, approximately 30 feet long and 2.5 feet deep. Rills are <br />present above and to the east of diversion. Another significant gully has formed from the outflow of <br />the diversion above PM-8, east of the fence and directly through a portion of the unfenced shrub study <br />azea. Significant rills are also forming west of the start of PM-8. A representative slope of 29% was <br />measured in the upper portion of PM-8, the design for this channel indicates that the slope in the <br />upper portion range from 15-22%. Erosion is occurring above PM-8 and depositing sediment in the <br />riprap portion at the start of PM-8. A portion of the channel bank above the intersection with PM-8a <br />is exposed without armoring and is eroding. PM-8a is a meandering roughened spoil design. This <br />channel is not stable with down cutting through the spoil. There is a lazge gully south of PM-8a that <br />begins as high up as the diversion above the shrub study azea. Upper PM-86 is a vegetated channel <br />that drains into lower PM-8b. Lower PM-86 is a roughened spoil meandering channel that was <br />designed to drain into PM-8. The instability and erosion a[ the lower end of the former East Wadge <br />Pit and the final dozer pit locations have been the focus of several previous inspections. In June 2004 <br />13 <br />