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Colowyo C-1981-019 19 June 2006 Pg 3/6 Hydrologic Balance (cont.): -Sump 5 contained a small puddle of water at the time of the inspection. The sump was stable at the time of the inspection. - The West Pit Pond (NPDES 008A) contained a small puddle of water and was not discharging at the time of the inspection. The presettling basin at the inlet of the pond contained water about one foot below the spillway to the West Pit Pond. The pond embankment was well vegetated and stable at the time of the inspection. No erosional problems were noted on the embankment at the time of the inspection. The emergency spillway is a riprapped channel. The spillway was stable and in good condition. -The East Taylor Pond (NPDES O1 OA) contained a small pool of water at the bottom of the pond and was not discharging. The West Pit contains all of the water from this pond's watershed. The pond embankment was well vegetated and stable at the time of the inspection. No erosional problems were noted on the embankment at the time of the inspection. The emergency spillway is a riprapped channel. The spillway was stable and in good condition. -The Gossard Pond (NPDES 003A) contained water approximately three feet below the riser pipe and was not discharging at the time of the inspection. The pond embankment was well vegetated and stable and there were no erosional problems noted at the time of the inspection. The emergency spillway is a 12" culvert. There is again a good deal of sediment at the inlet of this pond. It will probably need to be cleaned this fall. -The Rail Loop Pond (NPDES OObA) contained water approximately three feet below the discharge pipe and was not discharging at the time of the inspection. The pond embankment was well vegetated and stable at the time of the inspection. No erosional problems were noted on the embankment. -The Stoker Siding Pond (NPDES OOSA) contained water approximately four feet below the discharge pipe but was discharging just a trickle through the weep-hole (the flow was so low that it was not measurable on the flume). The pond embankment was well vegetated and appeared to be stable at the time of the inspection. No erosional problems were noted on the pond embankment. - Culverts K and M were checked, as these are the two culverts that seem to constantly need cleaning. Both culverts were clean. One possible problem, however, is that there are large piles of dirt at the edge of these culverts. During a storm event this dirt could go back into these culverts and plug them back up. It is recommended that these piles of dirt at the edges of culverts K amn M be moved to the pit. If there are any other of these piles at any of the other culverts, it should be moved as well. Backfilling and Grading: -The operator continues to finish the regrading work at the south east portion of the East Pit. The operator is recontouring this area, pulling spoil up from the bottom of the ridge and grading it to its final, approved topography with a dragline. At the time of the inspection the 101 dragline was moving spoil from the east edge of the pit to the southeast edge of the pit, along the low wall area. The operator is completing this work as time permits.