_INSPECTION - C1982057 (74) - Laserfiche WebLink

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July 18,2011 C-1982-057lSeneca H-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 R -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 DRMS, and reviewed by Susan Burgmaier in the DRMS Denver office. Weather conditions at the time of the flight were clear. There was a heavy monsoon period at the site between July 71h and 151h,2011. HYDROLOGIC BALANCE -Rule 4.050[]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 006,016,016A,and 017 were photographed. All of the ponds were full of water to the top of the discharge structures. The north area drainages(reclaimed Pits A,B,C,and D)were in good condition,and it did not appear that recent storms had caused any damage in this area. There was considerable damage to several postmining channels in the South Extension Area. ROADS—Rule 4.03❑❑Construction 4.03.1(3)/4.03.2(3)CI C]Drainage 4.03.1(4)/4.03.2(4)❑❑Surfacing and Maintenance4.03.1(5)and(6)/4.03.2(5)and(6)❑❑Reclamation 4.03.1(7)/4.03.2(7): Earthwork was continuing along the Mine Entrance Haul Road and Haul Road A to reclaim the road to the approved post-mining configuration. Topsoil had been redistributed along the Mine Entrance Haul Road reclamation,and Haul Road A in the facilities vicinity. SLIDES and DAMAGE-Rule 4.12: No new areas of instability were identified,and it did not appear that there was significant recent movement in any of the previously identified slide areas. Earthwork was underway in the vicinity of Pond 006, moving Haul Road A to more stable ground and reclaiming the road surface in excess of the approved post-mining width. Number of Partial Inspection this Fiscal Year: 2 Number of Complete Inspections this Fiscal Year: 0 Page 2 of 7