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March 29,2022 C-1981-019/Colowyo Coal Mine ZTT <br /> Lower portion of Final East Pit Ditch. <br /> Similarly to the ditches associated to the East Pit,portions of ditches associated with the West Pit were inspected. <br /> This included the Buckskin,West Taylor,and East Taylor Ditches. Upper portions were walked and the majority <br /> lengths of the ditches were visually observed from an overlook position above the West Pit highwall.No visible <br /> flow through the ditches were observed but each stock tank associated with the ditches held water.No issues were <br /> observed. <br /> Upper portion of Taylor Ditch. <br /> All currently constructed ditches for the Collom area were also inspected. This included D-1,2,3,4,and D-6 <br /> ditches.Most of the Collom ditches were visually observed from overlook positions that allowed for the entirely or <br /> majority of the ditch to be viewed.All ditches were stable with no issues observed. <br /> The Streeter and Prospect Pond were inspected.These ponds are associated with East Pit.Both ponds held water <br /> Number of Partial Inspection this Fiscal Year. 6 <br /> Number of Complete Inspections this Fiscal Year 3 <br /> Page 4 of 10 <br />