_INSPECTION - C1994082 ‎(41)‎

• Permit No: C1994082
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 7/15/2009
• Email Name: DTM
• Media Type: D
• Archive: No

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III. COMMENTS-COMPLIANCE
Below are 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.
YPM 6-2. The Division plans to specify the following exclusion area in the proposed
decision for SL-2,which would include most or all of the disturbed land located north of
the YPM 6-2 corridor in the YPM 6-2 and YPM-7 watersheds:
Additional exclusion area would extend from the point where the SCC
exclusion corridor for YPM 6-2 (SL-2 Map Exhibit A) meets the undisturbed
aspen block; from that point northeast along the southeast edge of YPM-7 to
the maintenance road corridor; then along the maintenance road corridor to
the drainage divide between YPM-7 and YPM-8 (approximately
corresponding to the Section 17/20 boundary),then due west to the actual
disturbed area perimeter,then along the SL-2 Map A actual disturbed area
perimeter south and west to the SCC exclusion area boundary east of Pond
012,then along the outer edge of the bond release boundary depicted on SL-2
Map A back to the point of origin.
Pond 13 Watershed
This small watershed includes permanent drainage channels YPM-4, YPM 4-1, YPM 4-2, YPM-
17, and Diversion 13A. These drainages were inspected on 7/15/09. The channels all appeared
to be stable, and properly constructed in accordance with approved design. Photos
#MLT7151051 and#MLT7151054 show typical reaches of YPM-4. #MLT7151124 shows a
typical reach of YPM-17, and#MLT7151117 shows Diversion 13A and Pond 013. One issue of
concern in the Pond 13 watershed is a slide that occurred in early spring 2009, on a steep
hillslope at the upper(east) end of the reclaimed watershed. The primary scarp associated with
the slide was 3 to four feet in height and extended across the slope for approximately 120'. The
slide mass extended over 70' downslope from the scarp and numerous cracks and bulges were
evident. Photo#MLT1865 shows the slide repair project in progress as it appeared during the
SL-2 inspection on 7/15/09. Photo#SLB923155,taken 9/23/09, shows the slide repair area
following completion of remedial grading, topsoiling and seeding. Grading eliminated a segment
of temporary light use road that ran along the crest of the slope, and allowed for a modest
reduction in slope grade through the slide zone. Inclinometer check following completion of
remedial grading on 8/12/09 indicated a slope of 35%, which is in accordance with Exhibit 20-2
PMT. At present, the slope appears to be stable and blends in well to the adjacent terrain.
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