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Colowyo C-1981-019 12 December 2006 Pg 3/s ~~ Hydrologic Balance (cont.): -The West Pit Pond (NPDES 008A) contained a small pool of water and was not discharging at the time of the inspection. There was also a small pool of water in the presettling sump at the inlet of the pond. The pond embankment was well vegetated and appeared to be stable at the time of the inspection. No erosional problems noted on the embankment at the time of the inspection. The emergency spillway is an open, trapezoidal riprapped channel. The spillway was stable and well maintained at the time of the inspection. -The East Taylor Pond (NPDES Ol OA( contained a small pool of water at the bottom 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 noted on the embankment at the time of the inspection. The emergency spillway is an open, trapezoidal riprapped channel. The spillway was stable and well maintained at the time of the inspection. The water that is being pumped from the Section 4 area of the West Pit is being pumped into the riprapped spillway of the East Taylor Pond. The diffuser appears to be working very well as there were no erosional problems noted in the spillway at the time of the inspection. -The Rail Loop Pond (NPDES 006A) contained water approximately two feet below the spillway 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 noted on the embankment at the time of the inspection. The emergency spillway is an open, trapezoidal riprapped channel. The spillway was stable and well maintained at the time of the inspection. This pond was cleaned last month, with 300 cubic yards of sediment removed. There are two large piles of sediment/coal fines at the inlet of the pond from the cleaning of the train tunnel. -The Stoker Siding Pond (NPDES 005A) 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 noted on the embankment at the time of the inspection. The emergency spillway is an open, trapezoidal riprapped channel. The spillway was stable and well maintained at the time of the inspection. This pond was not cleaned this year. - The Prospect Pond (NPDES 007A) contained water approximately six 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 noted on the embankment at the time of the inspection. The emergency spillway is an open, trapezoidal riprapped channel. The spillway was stable and well maintained at the time of the inspection. This pond was cleaned last month, with 1,500 cubic yards of sediment removed. The Streeter Pond (NPDES 001 A) contained water approximately six inches below the discharge pipe and was discharging at the time of the inspection. The discharge appeared to be clear. The pond embankment was well vegetated and appeared to be stable at the time of the inspection. No erosional problems noted on the embankment at the time of the inspection.