INSPEC37545

• Permit No: C1981041
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• Inspection Date: 9/20/2006
• 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.
include locations at the 016 Discharge Site SAE (material wind damaged, torn off stakes in some
locations, and one end stake broken off), upper silt fence at "B" substation site (fabric wind damaged,
needs to be replaced), 2-West Portal lower portal (material torn off several of the stakes), 2-W Portal
Substation SAE (one of the silt fence end stakes needs to be re-set), South Fan area (two silt fences
wind damaged and need to be replaced), North Portal Area silt fence functional but material pulled away
from stakes at one end.
Coal Creek permanent diversion segment had been properly regraded, and segment of bank adjacent to the
Pond 10 embankment had been properly protected with riprap prior to the inspection. There was moderate flow
in the channel on the morning of 9/22.
Sediment Ponds 6, 8, 10, 1&2, and the evaporative sewage lagoons contained shallow puddles. Pond 11
contained a pool approximately 7 feet below the level of the embankment; Pond 9 contained a pool at the
approximate level of the primary spillway pipe (valve closed; no discharge). Ponds 7, 13, and the North Decline
SAE sumps were merely muddy, with no standing water. The CBA-1 SAE sump contained a pool of water, but
was being siphoned out with a hose on 9/29; discharge water was clear.
Diversion and collection ditches and berms were in general properly maintained and functional. Most of the
maintenance work necessitated by previous storm events had been completed; work continuing in a few
locations. The East Wing of the North Portal Area upper diversion was silted in along the low gradient
middle segment, in one location depth appeared to be 1 foot or less (design depth is 1.3 feet). The
segment needs to be maintained as warranted to restore design specification.
There was small flow out of the north portal openings at the South Portal Area, which was properly draining into
Pond 8 via the portal bench drain and buried pipe.
Minewater Discharge Site 016 was discharging clear flow, approximately 300 gpm
Backfillina and Gradin
The various backfilled and graded areas were walked, and no slumping, cracking, or other signs of instability
were apparent. One gully which was caused by the intense rainfall in late July is still evident on the
backfill in the North Portal area, in the vicinity of the former portal decline location. This gully needs to
be repaired.
Processino Waste
Most areas of both CRDA waste disposal sites and the RSRDA waste disposal site were walked. There were no
indications of instability or excessive erosion. Diversions, perimeter ditches, and terrace drains appeared to be
properly maintained and functional, with a couple exceptions. Work was nearing completion on cleanout of
the CRDA-2 upper diversion ditch described in recent inspection reports. This work was temporarily
halted due to rain the night of 9/21 and morning of 9/22 that caused excessively muddy conditions, but
completion of repair was projected by 9/30. The riprap energy dissipator structures at the outlets on
both wings of the diversion will also need to be repaired; operator has indicated access for repair of one
of the outlets may be problematic.
On CRDA-1, water from the 9/22 rainfall was noted to have ponded in a couple locations along the upper
terrace drain, on the northwest section of the disposal pile. Ponding was noted along a 50 foot segment
at the upper end of the terrace drain, and along a 150 foot segment at the lower end of the terrace drain,
near the inlet to the NW perimeter collection ditch. This terrace drain needs to be regraded to establish
positive grade to the perimeter collection ditch.
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