_INSPECTION - C1980005 ‎(24)‎

• Permit No: C1980005
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 5/26/2009
• 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.
Backfilling and Grading
The East Wadge area was inspected by walking from the junction of Roads C and F, to the CSU shrub plot
location, and then down and across slope through the PM-8 watershed to Pond 008. The steep slopes in the
area have been subject to significant erosion and erosion repair efforts in the past, and erosional stability of the
watershed was the focus of my observations. No repairs had been conducted in the area to date this spring. An
upper segment of the PM-8 channel was marked by the operator for repairs on the 2009 rill and gully survey
map. The following observations were made during the walk through the East Wadge area.
• A few short hillslope gullies, 8-12"deep in some locations were noted on slopes in the vicinity of the
shrub plots, upslope of the upper erosion control ditch (V-Ditch#1). Hand work repairs such as small
rock checks, straw wattles, etc., would be appropriate in these locations.
• Similar measures may be warranted in areas of concentrated rill erosion within the unfenced seeded test
plots north of the fenced plots.
• There appeared to be areas of side scour, exposed underliner, and downcutting along various segments
of the PM-8 Channel, extending further down along the length of the channel than identified for repair on
the 2009 R&G survey map. Downcutting was observed at a couple of the transition points where the
erosion control V ditches enter the main PM-8 Channel. Sidecutting was noted in locations where riprap
did not properly extend up the sides of the channel; re-shaping and redistribution of riprap will be
necessary in these areas. Operator should ground check the entire length of PM-8 and repair as
warranted.
• The series of erosion control V ditches in the PM-8 watershed appear to have been effective in
controlling erosion on the steep slopes, and previously repaired rill and gully locations appear to have
held up. The small slide located east of PM-8 near the disturbed area boundary showed no indication of
renewed movement.
Certain other locations where erosion repair or preventive measures are warranted are noted in recent
inspections reports, and include upper PM-6, erosion associated with a temporary diversion above Road F south
of Stock Pond T-30, and a previously repaired gully location subject to concentrated flow from snow drift
locations below Road E-1, south of the upper end of PM-22. These locations are marked on the 2009 R&G
Survey Map.
The Pre-law area that has not been released from bond, and which includes the area of acid affected spoils that
were graded, limed, and seeded in the fall of 2007 were observed. The area appears to have remained stable,
with no significant erosion or instability evident. Vegetation cover remains somewhat patchy and sparse over-all,
but is already improved over conditions prior to remedial treatment. 2008 was only the first growing season, and
growth has only recently initiated this spring.
Revegetation/Reclamation Success
The reclaimed landfill area in the upper PM-10 watershed was topsoiled and seeded last fall. The annual wheat
cover crop seeded with the permanent mix had recently germinated on the topsoiled areas.
Because vegetation establishment was scrutinized over large areas of the permit in the Phase II bond release
last year and observations were documented, vegetation observations during this inspection were focused on
the East Wadge area that was not included in the Phase II release request area, and the CSU shrub
establishment test plots within the East Wadge Area.
Within the test plots, it was noted that the tubeling tall shrub species within the fenced portion of the plots still
appear to be thriving. Within the seeded areas both within and outside of the plot, and in various older stands in
the permit area, it was noted that arrow leaf balsamroot forbs were near peak of flowering, and were quite showy
and surprisingly abundant. Also, it was apparent that growth of seeded shrubs was best within the deep soil (50
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