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April 27,2011 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 N -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 N - Support Facilities Not On-site N -Other NA - Special Categories Of Mining NA -Processing Waste N -Topsoil COMMENTS This was a partial inspection of the Seneca II-W Mine based on aerial photographs of the site taken April 27,2011. The photographs were taken by Harry Ranney of DRMS, and reviewed by Susan Burgmaier in the DRMS Denver office on April 29, 2011. Weather conditions for the flight were partly cloudy. Most of the snow from the previous day had melted,but upper areas of the mine remain covered in snow. Ponds 006,016A and 017,the facilities area, the A and B Pits in the Original Permit Area,the Ridgeline Access Road, and South Pit areas were all photographed. HYDROLOGIC BALANCE -Rule 4.0511[]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: Ponds 006,016A,and 017 held water, but it was not apparent whether any of the ponds were discharging. Ponds 016A and 017 were still partially frozen. Most of the pit areas were still snow covered,with only small areas of south facing slopes melted off, so it did not look like major runoff from snowmelt was yet underway. SLIDES and DAMAGE -Rule 4.12: A small slump was observed on the northeast side of the reclamation, south of the site of Topsoil Stockpile AAA and northeast of the shrub enclosure. The extent of the slump and whether any damage outside of the disturbance boundary had occurred were not immediately apparent. When conditions allow,this area will be more closely inspected. The previously identified Pond 016/016A slide area was still covered in snow; it was not apparent whether any additional movement had occurred in the area. Number of Partial Inspection this Fiscal Year: 8 Number of Complete Inspections this Fiscal Year: 3 Page 2 of 8