_INSPECTION - C1981010 (50) - Laserfiche WebLink

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A crack running perpendicular to the hill slope was found along the '9'1", central portion of H-C-04 heading toward H-C-03. It averages about i,-' I —2 inches wide and is approximately 400 feet long. This narrow Ni solitary crack is not a major concern warranting a disturbance to the , 0. surface. However, I would recommend monitoring the site— A especially after significant rainstorm events. Fig.2:H-C-04 crack The drainage channel on the southeastern portion of H-C-03 is showing signs of erosion and down-cutting (see figure 3). This channel has only a few check dams. We discussed excluding the channel and proceeding with Phase I & II release for the surrounding area, but that does not appear to be TMI's preferred £; option. Mr. Luke is concerned about bringing heavy equipment in to the area and would prefer to put brush in the channel to assist its healing process. We discussed the size of the � .�. � watershed, its slope,the channel's curves, and other challenges r TMI faces. We agreed the channel needs work and will be revisited by DRMS (Jason Musick) and, if possible, OSM (Christine Belka) before Phase I &II bond release is ranted. The surrounding area is well-vegetated and appears g g g pp Fig.3:H-C-03 eroding channel stable. H-C-98 and H-B-98 are proposed for Phase III bond release. The areas stand out from surrounding reclamation by the presence of 6-foot tall grasses. The drainage channel has been maintained using brush to help heal downcut areas. This.approach appears largely successful; however, some small areas show signs of erosion. The surrounding area is well-vegetated and stable. Tuesday began in the central region of the proposed bond release area(Map Sheet 2) in the F- AB-05 plot proposed for Phase 1 bond release. Jennifer Miaolo (BLM) accompanied us this day and we briefed her on the bond release process, what we saw on Monday, and seeding/ vegetation sampling methods employed at the Trapper Mine. Vegetation did not establish along the southeast side of F- � � AB-05 (proposed Phase I) and numerous rills are forming ,fR AIR- �� (see figure 4). The designated drainage ditches cutting across the slope collects these rills, but the rills become e,,5 �r= � , larger where the cut through diversion embankments. i g Y b � ' Russian thistle is the predominant plant(weed) in the area with very little grass or other vegetation. This area appears reasonably stable for Phase I bond release. However, it will require special attention before meeting Phase II3 requirements. Figure 4:F-AB-05 no vegetation/rills forming Adjacent areas look significantly better. F-AB-02, F-AB-03, and F-AB-04 are proposed for Phase I& II bond release (F-AB-02 is Phase II only). A distinct vegetation line marks the barrier