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III. COMMENTS -COMPLIANCE Below aze comments on the inspection. The comments include discussion of observations made during the inspection. Comments also describe any enforcement actions taken during the inspection and the facts or evidence supporting the enforcement action. long-term stability of Post-Mine Channel PM-13. A photograph of the unstable area southeast and directly adjacent to PM-13 is shown in Photograph No. 6. These unstable areas associated with the PM-13 channel will be excluded from the Phase I bond release. At the upper section of PM-10 the channel does not have a trapezoidal configuration with 3.0:1 sideslopes as indicated by the design. There is too much riprap stockpiled on the uphill side of the channel preventing water from flowing into the channel. This has resulted in gully formation on the uphill side of the channel which has been repaired in the past. PM-10 should be reconstructed to a trapezoidal configuration with appropriately placed riprap to allow water to flow into the channel more easily. Photographs of upper PM-10 are shown in Photograph Numbers 7 and 8. This small section of the upper PM-10 channel should be reconstructed and will be excluded from the Phase I bond release. Backfill & Gradin The majority of the reclaimed area of the North Pit was stable. Surface runoff control appears adequate; however, there are several areas where rills and gullies have formed and should be monitored and hand repaired. There aze three specific areas that are erosionally unstable and will be excluded from the Phase I bond release as discussed below. These locations are in addition to the excluded areas described above for the light-use road, PM-10 and PM-13. Observations were made throughout the inspection with regard to approximate original contour and erosional stability of the reclaimed landscape. Based on observations made during this and previous inspections, the reclaimed areas have been restored to the approximate original contour of the pre-mining landscape. Comparison of the post- mining topography map (Exhibit 20-2) with USGS 7.5 minute Quadrangle Map of Mount Hams, Colorado indicates that two pre-mining drainages existed and were reconstructed in the appropriate locations. These are the locations of PM-9 and PM-10. Some differences were noted between original ground surface and post-mining topography at both PM-9 and PM-10 in that the final configuration of each of these channels was deeper than the original elevation of the pre-existing intermittent drainages. This elevation difference can be seen on Exhibit DPost-Mine Cross-Sections but is not considered a significant alteration of the approximate original contour since the drainages were restored in the approximately the same place as they existed prior to mining. Prior to this inspection the 2006 Rill and Gully Survey was reviewed and all areas idenitified on the survey were inspected during this and previous inspections. One feature is identified as a Settlement Crack located along the south facing north highwall.