INSPEC43035

• Permit No: C1982057
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• Inspection Date: 4/27/2004
• 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.
pond construction would be sufficient to moderate runoff flows and prevent accelerated
erosion of the native channel segment. The 2004 snowmett runoff is the first such runoff
from the entire D Pit regraded watershed area that the channel reach has conveyed. The
Division will periodically monitor the condition of the channel reach, until an effective
permanent vegetation cover has become established over the entire "D" Pit reclaimed area.
Appropriate enforcement may be taken if significant additional channel erosion is
documented.
During this inspection, the same areas of the channel were observed as had been observed
in the fall of 2003, and digital photos were taken in many of the same approximate
locations. Focus of re-inspection was on areas of previous head-cutting, which appeared to
be susceptible to further headword erosion. In the narrative below, italicized text is from
the September 30, 2003 inspection report. Comments based on observations made on
April 27, 2004 are in bold.
The channel currently appears to be relatively stable, but it runs a/ong the toe of a
hillslope to the north that has been subject to landslides in the past, and renewed
downcutting along the channe/ would likely trigger additional sliding. There are a
number of nickpoints a/ong the channel with head-cutting erosion, most of which
looks fair/y o/d, but some evidence of additional cutting in the /ast few years.
Based on observation and comparison of photographs, there appears to have been
relatively minimal additional down-cutting or headword erosion, and no new
landslide activity on slopes adjacent to the channel is evident.
At this /ocation [lower end of the channel segment just upstream from the stock
pond), a road outlet ditch that had eroded and was subsequent/y backfilled last
spring [2003], emptied into the channel.
The short channel reach between the stock pond and the Road G outlet ditch is
depicted on September 2003 Photo #751 and April 2004 Photo #1018. There may
have been minor scour in the segment below the ditch outlet this spring. The road
outlet ditch itself had eroded again this spring, and grading repairs had been
initiated. Riprap will need to be installed along the length of the road outlet ditch,
and should be continued for some distance down the channel segment toward the
stock pond, to prevent undercutting.
There is a notable n/ckpoint approximately 100 yards up the channel from the 751
photo point. At this location there is a steep sided gully segment up to 15 feet
deep, approximately 20 feet in length, varying from 6 inches to 7 feet wide /Photos
752 through 7551.
There may have been some apparently minor additional scour along the previously
entrenched 100 yard segment upstream from the ditch outlet confluehce, but it is
difficult to say with certainty, due to the fact that photo points were not exactly the
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