_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.
the SL-2 release request area. Minor, intermittent settling cracks were present for several
hundred feet along the old highwall location on the reclaimed slope west of the channel;
maximum displacement appeared to be 6-12" (Photo#499). The cracks appear to be healing
over and should be monitored,but no further action is recommended at present.
YPM 5-1 is a relatively stable riprapped channel along most of its length. There is one short
segment where riprap has been scoured and re-deposited, resulting in diversion of flow to the
outside of the riprap along the left bank for approximately 40 feet (Photos #504 and#505). The
affected segment is along a steep reach approximately 150 feet upstream of the YPM 5-1A
confluence. This section will need to be monitored to ensure that flow does not escape the
channel and that channel incision does not result along the segment where a flow path is
evident outside of the riprap zone.
A hillslope erosional rill/gully enters the YPM 5-1 channel from the east, a couple hundred feet
downstream from the YPM 5-1A confluence. The feature varies from a shallow rill in some
segments to a gully with maximum depth of 15-18" along other short segments (Photo#503). It
originates along an old scraper route near the top of the ridge and runs for approximately 500-600
feet down to the channel. Appropriate maintenance and repair measures in accordance with
the approved Rill and Gully plan are warranted, including water bars or other measures to
address flow concentrated from the former scraper route.
YPM 5-1A is a short riprapped channel tributary to YPM 5-1, stable along its full length.
YPM 1-2 Drainage
YPM 1-2 is a stable valley channel that extends from Stock Pond T-1 down valley to the junction
with YPM-18, a steep, stable TRM lined tributary from the east(Photo#517). The YPM 1-2
channel is riprapped along the upper reach(Photo#514) and TRM lined along the lower reach
(Photo#516). Channel YPM-2 is a short, stable TRM lined tributary that enters the YPM 1-2
upper reach from the southwest.
YPM-1-3 Drainage
YPM 1-3 continues down the main valley downstream from the YPM-18/YPM 1-2 confluence,
to the junction with YPM-19. YPM 1-3 is a TRM lined channel with minor side scour along its
lower reach; appears to be healing but should be monitored (Photo#518). YPM-19 is another
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