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July 18, 2012 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 />R - Backfill & Grading R - Revegetation <br />R - Excess Spoil and Dev. Waste NA - Subsidence <br />N - Explosives R - 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 />R - Other NA - Special Categories Of Mining <br />NA - Processing Waste N - Topsoil <br />COMMENTS <br />Rob Zuber of DRMS conducted the partial inspection. Kurtis Blunt of Colowyo also participated in the <br />inspection. The ground was dry. The weather was hot, and no precipitation was experienced. <br />Due to a recent fatality on site, there was limited activity in the West and South Taylor Pits. The 102 dragline was <br />moving spoil below the West Pit Spoil Pile. <br />BACKFILL and GRADING — Rule 4.14: <br />The 102 dragline was moving spoil below the West Pit Spoil Pile (aka Hink's Peak) on the northeast side. <br />EXCESS SPOIL and DEVELOPMENT WASTE — Rule 4.09: <br />West Taylor Fill was observed from the road below and no problems were observed. Topsoil has been spread on <br />almost the entire face. The rocks in the side drains still need to be broken into smaller rocks. <br />HYDROLOGIC BALANCE - Rule 4.05: <br />The following ponds were inspected: Stoker Siding, Rail Loop, Gossard, Section 28, Prospect, Gulch A, Streeter, <br />West Taylor, and East Taylor. Streeter, West Taylor and East Taylor were discharging. The discharge water was <br />clear for these ponds. Most of the other ponds were holding water but not discharging. The following were empty: <br />Section 28 and Gulch A. No problems were identified with dams or other structural aspects of the ponds. <br />Other observations concerning the ponds: <br />• Flumes need to be cleaned below three ponds: Stoker Siding Pond (low priority), Prospect Pond, East <br />Taylor Pond. <br />• Large amounts of algae were identified at Stoker Siding and Streeter Ponds. <br />• The Prospect darn is seeing significant vegetation growth on top where it was bare. <br />The South Collector Ditch was observed from the top to Prospect Ditch; no problems were observed. <br />Number of Partial Inspection this Fiscal Year: I <br />Number of Complete Inspections this Fiscal Year: 0 <br />Page 2 of 8 <br />