_INSPECTION - C1982057 (5) - Laserfiche WebLink

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May 16, 2011 C-1982-057/Seneca 11-W Mine SLB Inspection Topic Summary NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable Y -Air Resource Protection V -Roads N -Availability of Records N -Reclamation Success Y -Backfill&Grading R -Revegetation NA -Excess Spoil and Dev. Waste NA - Subsidence NA -Explosives R - Slides and Other Damage R -Fish&Wildlife Y - Support Facilities On-site R -Hydrologic Balance R -Signs and Markers Y -Gen. Compliance With Mine Plan N -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 11-W Mine conducted by Susan Burgmaier and Brock Bowles(DRMS). Roy Karo of Seneca Coal Company was present during portions of the inspection. Weather varied during the inspection, from sunny and warm to rain and snow showers. Locally,weather patterns continue with cooler temperatures and higher than normal precipitation. The Yampa River basin is at 201%of normal. At the mine site,there is still a considerable amount of snow in the upper Pond 016 and 017 watersheds. FISH and WILDLIFE—Rule 4.18: The Columbian Sharp-Tailed Grouse lek near the intersection of Haul Roads A and J and the Ridgeline Access Road was visited the morning of May 17th,at approximately 6 a.m. There were approximately 20-30 birds dancing and drumming. Harriers,Red-Tailed Hawks, several songbirds, elk,and deer were observed throughout the permit area. HYDROLOGIC BALANCE -Rule 4.05 7-(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: Pond 006 was discharging somewhat cloudy water,but appeared to be well within the 0.5 trd/l settleable solids limitation. The embankment and outfall area of the pond were stable. There was still a good amount of water running down through the 006 Gulch,but snowmelt was nearly complete in this drainage. Pond 009 was discharging fairly clear water. The embankment of Pond 009 was stable,but the emergency spillway still needs supplemental rip rap to meet design criteria. The rock in the spillway has weathered and fractured. Number of Partial Inspection this Fiscal Year: 9 Number of Complete Inspections this Fiscal Year: 3 Page 2 of 15