2011-11-16_INSPECTION - C1981019

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November 17, 2011 C -1981- 019 /Colowyo Coal Mine JHB Material is being dumped in the B -B' dump area of the South Taylor Fill. Construction is following the approved plan and no concerns were identified in the South Taylor fill area FISH and WILDLIFE — Rule 4.18: Deer and elk hunting seasons are ongoing, (one season started on 11/16). Elk were observed at the southern end of the mining area near the X -Pod activity. A large herd of elk were observed grazing along the north end of the West Pit fill. A large herd of elk was also observed on the East pit reclamation. HYDROLOGIC BALANCE - Rule 4.05 Drainage Control 4.05.1, 4.05.2, 4.05.3; Siltation Structures 4.05.5, 4.05.6; Discharge Structures 4.05.7, 4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; Drainage — Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: All ponds except Section 16 Pond and the stock ponds on the reclaimed areas were inspected. The embankment and riser repair of the Work Area pond has been completed and the embankment has been backfilled around the repaired riser. CCC has also cleared sediment away from the head gate at the riser and has cleaned sediment from the inlet area of the pond. West Taylor Pond was holding a pool of water. Chip Brown of CCC said that the pond was discharging when he monitored it last week. CCC inquired about a temporary relief of monitoring the West Taylor pond during first quarter months due to the difficulty and safety concerns of access the discharge point. This is an NPDES point in the CPDS permit. CCC will need to request this relief from the CDPHE. East Taylor Pond was discharging was discharging 0.04 on the 30" flume staff gauge. Discharge is visually clear. This pond was cleaned in August but had a TSS exceedances in October. Chip Brown thought that the weep holes had been partially plugged during that event but there was no evidence of such. There were tumbleweeds in the pond but not to a degree to impede the discharge. West Pit pond was holding a mall pool of water. This pool was mostly frozen. Water level appeared to be about 6 feet below the discharge elevation. No problems were noted with this pond. Gossard pond was cleaned of sediment this summer. Due to pipes entering the pond at the southeast corner, that corner was not cleaned. CCC was able to remove sediment from the other portions of the pond. No problems were identified at the Gossard pond. Water level was approximately 4 feet below the discharge elevation. Rail loop pond was cleaned this summer as well. This pond has a small pool of water approximately 4 feet below the riser, and has adequate storage volume. Stoker pond was holding a pool of water and was not discharging. Streeter pond was holding a permanent pool of water that was partially frozen. Waterfowl were present in the pond. Chip noted that beaver tend to dam up Good Spring Creek below the Streeter pond discharge. This area had been cleared of debris and Good Spring Creek was flowing unimpeded through the highway culvert. Streeter Number of Partial Inspection this Fiscal Year: 3 Number of Complete Inspections this Fiscal Year: 2 Page 3 of 10