_INSPECTION - C1982057 ‎(33)‎

• Permit No: C1982057
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 10/14/2009
• 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.
Channel 006-NE2
006-NE2 is actually a continuation of 006-NE3,beginning at design point RR, near the lower end
of the"woody draw", and continuing down to confluence with 006 Gulch(design point C),just
to the east of the oil well bench. There had been recent intermittent erosion along sections of the
channel upstream of a steep section at the lower end. Maintenance grading had been recently
completed along some sections of the reach(Photo SL2-29),but short segments of narrow gully
incision remain(Photo SL2-30). Gully repair, channel shaping, and riprap installation to design
specification(see Permit Figure 20-1.1) need to be completed along the length of NE2 upstream
from the steep lower segment. Due to the extent of grading work and riprap installation
required, the Division will exclude the channel segment extending from Design Point RR
down to the beginning of the steep lower reach above the 006 confluence from the SL-2
proposed decision (a channel segment approximately 600' in length). The steep reach at the
lower end of the channel appears to be relatively stable,but riprap has been washed out in a
few locations, exposing the fabric underliner, and maintenance is warranted (see Photo
SL2-31).
Channel 006-El
The short reach above (east of) the Ridgeline Access Road has been riprapped and is developing
a good vegetative cover; the channel and adjacent sideslopes appear to be stable (Photo SL2-49).
The entire length of the E-1 channel downstream of the Ridgeline Access Road to its confluence
with 006 Gulch, likewise appears to be a stable riprapped channel. There are a few locations
where past side scour is evident,but the locations appear to be healing. Photo SL2-16 shows a
typical segment above the 006-E2 confluence; Photo SL2-19 shows a lower segment of the
channel,below the 006-E2 confluence.
A hillslope gully enters the upper reach of 006-E1 several hundred feet west of the Ridgeline
Access Road. The gully begins approximately 20 yards below the road and 50 yards north of the
channel, and is 12"-16" deep in some segments (see Photo SL2-15). Further downstream, along
the segment below the E2 confluence, another hillslope gully of similar depth, and approximately
100' in length enters the channel. These gullies will need to be stabilized in accordance with
the approved Rill and Gully Plan. There are a few other locations where old hillslope gullies
enter the channel,but these all appear to be healing over, and maintenance does not appear to be
warranted.
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