_INSPECTION - C1982057 (15) - Laserfiche WebLink

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November 23, 2011 C-1982-057/Seneca II-W Mine SLB Inspection Topic Summary NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable NA -Air Resource Protection N -Roads N -Availability of Records N -Reclamation Success N -Backfill &Grading N -Revegetation NA -Excess Spoil and Dev.Waste NA - Subsidence NA -Explosives R - Slides and Other Damage N -Fish &Wildlife N - Support Facilities On-site R -Hydrologic Balance N - Signs and Markers Y -Gen. Compliance With Mine Plan NA - Support Facilities Not On-site NA -Other NA - Special Categories Of Mining NA -Processing Waste N -Topsoil COMMENTS This was a partial inspection of the Seneca IIW Mine based on aerial photographs of the site taken by Harry Ranney of CRDMS and reviewed by Susan Burgmaier of CDRMS. The north and south mining areas were photographed. The site was covered with snow, and no activities were apparent in the photos. The Mine Entrance Haul Road and Roads A and J were clear to Pond 016,all other roads were snow covered. It appeared that a vehicle had recently travelled Haul Roads G and K, as there were tracks in the snow. HYDROLOGIC BALANCE -Rule 4.05 Drainage Control 4.05.1, 4.05.2, 4.053; 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: Ponds 006, 016,and 017 and Stock Tanks T5,T18,T20, T26, and T27 all held water. Ponds 006, 016, and 017 appeared to be discharging. The spoil spring at the base of PM2, draining to Pond 016 was flowing. SLIDES and DAMAGE -Rule 4.12: Repair of the Pond 016A slide area appears to be shut down for the season,based on the snow cover. The excavation of the north slope above the former Pond 016A embankment was not yet complete It appeared that the lower segment of PM2 was constructed to through culvert K-1 and down to Pond 016. Pond 016A had been partially filled and regraded;there will be more excavated material from the north slope that will bring the area to final grade. The regraded slides in the vicinity of Pond 006 and the oil well road all appeared to be stable,with no slumps or cracks apparent. It looked like two trench drains had been excavated along the Pit Ramp slide,but it was not apparent whether the drains were in their final configuration. Number of Partial Inspection this Fiscal Year: 9 Number of Complete Inspections this Fiscal Year: 2 Page 2 of 6