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Apri17, 2021 C-1981-019/Colowyo Coal Mine ZTT <br /> EWE* <br /> Highwall miner at Collom Pit. <br /> ROADS—Rule 4.03 <br /> Construction 4.03.1(3)/4.03.2(3),Drainage 4.03.1(4)/4.03.2(4), Surfacing and Maintenance4.03.1(5)and <br /> (6)/4.03.2(5) and(6),Reclamation 4.03.1(7)/4.03.2(7): <br /> Active watering activities along haul routes were observed. <br /> SLIDES and DAMAGE -Rule 4.12: <br /> The areas adjacent to the confluence of Ditches TD and ETD within the reclaimed portion of the West Pit was <br /> inspected for rilling. In previous years,rills have been observed in this area.No major rills or erosion was <br /> observed during the inspection. One small rill was observed but does not appear to be an issue at this time. This <br /> area was documented by the Colowyo representative for future observations and potential repair work. Generally, <br /> with vegetative cover,these small erosional features self-heal over time. Previous repair work was inspected and <br /> remains stable.Vegetation has not yet established itself along the repaired areas yet.This is mostly attributed to <br /> the extremely dry weather and how relatively recent the repairs were performed. <br /> Number of Partial Inspection this Fiscal Year: 6 <br /> Number of Complete Inspections this Fiscal Year: 3 <br /> Page 6 of 9 <br />