_INSPECTION - C1980005 ‎(9)‎

• Permit No: C1980005
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 7/14/2009
• 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.
were performed in the fall of 2007, with some additional slope scarification and seeding in the
fall of 2008.
Photo No. 7, of the Division's 8/24/06 inspection for SL-1 bond release, is an aerial view of the
East Wadge Area as it appeared on August 22, 2006, prior to implementation of TR-41 designs
and associated remedial work. Photo HBR0038 attached to this (SL-4) report is an aerial view of
the site taken after TR-41 designs were implemented, on 10/28/08. Various points of reference
are identified on the photo; perspective view is to the northwest.
Problems noted in Division inspection reports prior to TR-41 implementation included hillslope
and permanent channel erosion along Channel PM-8, PM-8 tributaries, and adjacent slopes as
referenced previously(see August 2006 through October 2007 inspection reports). A small
slump occurred in early spring 2008 near the permit disturbance perimeter north of Pond 008,
east of the PM-8 channel (see inspection reports of May and October 2008 documenting the
slump and its subsequent repair). A remnant"corridor" of concentrated rill erosion was noted on
the reclaimed hillslope between V-Ditch 3 and V-Ditch 4 on a 10/15/08 site inspection; repair by
slope roughening and seeding was noted in an aerial inspection of 10/28/08. A site inspection of
5/26/09 noted that the V-Ditches appeared to have been largely successful in controlling erosion,
and previously repaired areas had remained stable. The same report noted a few short segments
of minor erosion on hillslope areas, with hand repair maintenance recommended, and also noted
concerns with sidecutting erosion along a segment of Channel PM-8 and downcutting at one
location where a V-Ditch entered the PM-8 channel.
The SL-4 inspection of the East Wadge Area was begun by driving along a two-track route from
the intersection of permanent roads "C" and "F", to a location up-slope of V-Ditch#1, above and
southwest of the CSU shrub establishment test plots. The portion of the East Wadge area up-
slope from V-Ditch#1 is characterized by an excellent cover of perennial vegetation, with no
indications of excessive erosion or instability. The reclaimed slopes down-gradient from this
starting point(generally to the south)had been the focus of previous erosional stability concerns,
as well as drainage re-construction and associated remedial grading, roughening, and seeding.
From the starting point, participants walked down the reclaimed slope, in a zig-zag meandering
pattern, following along the length of each of the V-Ditches as well as the length of Channel PM-
8 within the release request parcel.
Slope measurements were made using an inclinometer along various segments of Channel PM-8
and each of the tributary V-Ditches. Ditch and channel approximate dimensions, type and
4