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July 23,2013 C-1981-019/Colowyo Coal Mine RDZ <br /> Inspection Topic Summary <br /> NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable <br /> N -Air Resource Protection N -Roads <br /> N -Availability of Records R -Reclamation Success <br /> N -Backfill& Grading N -Revegetation <br /> R -Excess Spoil and Dev.Waste NA - Subsidence <br /> N -Explosives N - Slides and Other Damage <br /> N -Fish&Wildlife N - Support Facilities On-site <br /> R -Hydrologic Balance N - Signs and Markers <br /> R -Gen. Compliance With Mine Plan NA - Support Facilities Not On-site <br /> N -Other NA - Special Categories Of Mining <br /> NA -Processing Waste R -Topsoil <br /> COMMENTS <br /> On July 23,2013 Harry Ranney flew over Colowyo Coal Mine and took several dozen aerial photographs. The <br /> weather was cool during the inspection. On July 25,2013 Robert Zuber reviewed the photographs. <br /> EXCESS SPOIL and DEVELOPMENT WASTE—Rule 4.09❑ Placement;Drainage Control; Surface <br /> Stabilization: <br /> West Taylor Fill and West Pit Fill were observed, and no gullies or other significant problems were seen. <br /> HYDROLOGIC BALANCE - Rule 4.05❑ Drainage Control 4.05.1,4.05.2,4.05.3; Siltation Structures 4.05.5, <br /> 4.05.6; Discharge Structures 4.05.7,4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water <br /> Monitoring 4.05.13; Surface Water Monitoring 4.05.13; Drainage—Acid and Toxic Materials 4.05.8; <br /> Impoundments 4.05.6,4.05.9; Stream Buffer Zones 4.05.18: <br /> Four ponds with CDPS outfalls were inspected: Prospect,East Taylor,West Taylor,and West Pit. Three <br /> stock tanks in East Pit were also inspected: EPI,EP2, and NTEPI. No problems were identified with spillways, <br /> embankments or other aspects of the ponds. <br /> Several contour ditches were inspected in the East Pit and West Pit areas; none of them were found to have <br /> blowouts. <br /> The following ditches were inspected: Final East Pit Ditch,North Tributary East Pit Ditch,Trib. D,Trib.F,Taylor <br /> Tributary Ditch,East Taylor Ditch,West Taylor Fill side ditches, and the West Pit Fill side ditch. All of the <br /> ditches were found to be stable. <br /> GENERAL MINE PLAN COMPLIANCE: <br /> Mining activities were observed in the South Taylor and West Pits(although the dragline in West Pit may <br /> have been idle when the site was flown). Reclamation was observed at the north end of the West Pit area <br /> ("Hink's Peak"). All of these activities are in compliance with the mine plan in the Colowyo Permit Application <br /> Number of Partial Inspection this Fiscal Year: 2 <br /> Number of Complete Inspections this Fiscal Year: 0 <br /> Page 2 of 8 <br />