_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

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.
structure based on written documentation from YVEA, included in Tab 20 of the Yoast permit
application package. The power line corridor is included in the SL-2 release request area.
Most of the North Pit Area west of the drainage divide was approved for Phase 1 bond release in
SL-I. Exceptions were a section of upper YPM-10, which required regrading and improved
riprap distribution, a temporary light use road that ran along the north edge of YPM-10, and a
long gully which ran along the southern boundary of the North Pit area from the watershed divide
down to Armand Draw. Narrow corridors associated with these features were excluded from the
Division's SL-1 approval decision. The light use road segment was properly reclaimed, with the
exception of a short lower segment that was subsequently approved as a postmining road (LU2).
The remainder of the light use road was properly reclaimed, as verified during the SL-2
inspection (see previous discussion under"Roads"of this SL-2 inspection report). The entire
length of the YPM-10 channel was walked during the SL-2 inspection, numerous grade checks
were made, and no problems were observed. The channel was stable along its length and
appeared to be consistent with approved design, including the segment that was excluded from
the SL-1 approval. Photo MLT716427 shows a portion of the channel reach that was excluded
from the SL-1 approval; to the right side of the reclaimed light use road corridor. A gully was
noted during the SL-2 inspection, that extends up-slope and to the south from the upper end of
Channel YPM-10 (Photo MLT716444). The erosion apparently resulted from concentration of
flow along a previously reclaimed scraper route. This gully is considered a maintenance item
and will need to be stabilized by the operator in accordance with the Rill and Gully plan of
the approved permit.
Channels YPM-21 and its tributaries YPM-21 A and YPM-21 B were constructed subsequent to
the 2007 SL-1 bond release. These permanent channels were constructed along the length of
gully features that had been noted in the SL-1 inspection. The gullies that were noted where
YPM-21 and YPM-21B are now located were excluded by the Division from the SL-1 approval.
Due to time constraints, these channels were not closely observed during the July SL-2
inspection, but they were walked during the Division's inspection of June 16, 2009. YPM-21
was noted to include a steep riprapped segment along its lower end, with TRM lining along the
lower gradient upper segment, extending to the confluence of YPM-21A and YPM-21B. YPM-
21 was stable along its length and appeared to be in conformance with design specifications.
YPM-21A and YPM-21B were noted to be stable TRM lined channels along their entire lengths,
in apparent conformance with approved design. An intermittent gully was observed that was up
to 12" deep and extended from near the upper end of YPM-21 B up to its apparent source in a
roughened shrub planting area. Low impact hand-crew stabilization measures are warranted
for this gully,in accordance with the Rill and Gully plan of the approved permit.
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