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November 19, 2015 C-1981-019/Colowyo Coal Mine ZTT <br />Containment ditch around reclamation. <br />HYDROLOGIC BALANCE - Rule 4.05 <br />West Pit reclamation. <br />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; <br />Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water Monitoring 4.05.13; Surface Water Monitoring 4.05.13; <br />Drainage — Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: <br />Final touches on sumps within the West Pit reclamation channel have been completed. Rip rap has been finalized <br />and has been extended further into the inlet of the sumps to help reduce cutting along the nick point of the sump <br />inlet. Ditches along the slope have also been constructed to help reduce rills and gullies forming during times of <br />surface runoff. <br />Maintenance on the rills along the East Pit reclamation and cutting along Pond EPI are still scheduled and have <br />not yet to be completed. Ground conditions and weather have not allowed for heavy equipment to reach the areas. <br />Number of Partial Inspection this Fiscal Year: 5 <br />Number of Complete Inspections this Fiscal Year: 2 <br />Page 3 of 7 <br />