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Colowyo C-1981-019 26 April 2006 Pg 2/5 ~~ Hydrologic Balance: -The Section 16 Pond contained water approximately six feet below the top of the discharge pipe and was not discharging. The pond embankment was well vegetated and stable and no erosional problems were noted. The emergency spillway is a riprapped channel. The spillway was stable and in good condition. -The wash bay pond contained water approximately six feet below the top of the embankment-and was not discharging. This is a total containment pond and discharge triggers BTEX testing (in addition to regular NPDES testing). The water from this pond is used for watering the roads. The pond embankment was well vegetated and appeared stable at the time of the inspection. No erosional problems were noted on the pond embankment at the time of the inspection. -The work area pond (NPDES 002A) contained water approximately 2 feet below the discharge pipe (and six inches below the weep-hole) and was not discharging. Water was flowing into the pond at a rate of approximately five gallons/minute. 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. -Sump 1 was dry at the time of the inspection. The sump appeared to be stable at the time of the inspection. -Sump 2 contained water approximately two feet below the top 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 at the time of the inspection. The sump was stable at the time of the inspection. -Sump 4 contained water approximately three feet below the top at the time of the inspection. The sump was stable at the time of the inspection. - Sump 5 contained water approximately three feet below the top at the time of the inspection. The sump was stable at the time of the inspection. -The West Pit Pond (NPDES 008A) contained water approximately 8 feet below the discharge pipe (the water level was below that of the discharge pipe structure) and was not discharging. 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.