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Colowyo C-1981-019 25 July 2006 ~- Pg 3/7 Hydrologic Balance (cont.): -work area pond (cont.): 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. There was some sediment at the inlet of the pond but it does not appear to be a problem at this time. -Sump 2 contained water approximately one foot below the top of the sump at the time of the inspection. The sump was stable at the time of the inspection. -Sump 3 contained water approximately two feet below the top of the sump at the time of the inspection. The sump was stable at the time of the inspection. -Sump 4 contained water approximately two feet below the top of the sump at the time of the inspection. The sump was stable at the time of the inspection. -Sump 5 contained water approximately one foot below the top of the sump at the time of the inspection. The sump was stable at the time of the inspection. -The West Pit Pond (NPDES 008A) was dry at the time of the inspection. The presettling basin at the inlet of the pond contained water about three feet 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 OlOA) was dry at the time of the inspection. The West Pit at Section 4 is blocked and 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 need to be cleaned this fall. - The Rail Loop Pond (NPDES OO6A) was inaccessible at the time of the inspection due to a train being loaded. -The Stoker Siding Pond (NPDES OOSA) contained water approximately four feet below the discharge pipe and was not discharging at the time of the inspection. 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 backup. It is recommended that these piles of dirt at the edges of culverts K and M be moved to the pit. If there are any other of these piles at any of the other culverts, they should be moved as well.