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Colowyo C-1981-019 27 September 2007 Pg 3/7 Hydrologic Balance (cont.): -The East Taylor Pond (NPDES Ol OA) contained a small amount of water (to the bottom of the riser pipe at the bottom of the pond) 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 Prospect Pond (NPDES 007A) contained water approximately six inches below the top of the discharge pipe but was not discharging at the time of the inspection. Due to the large amount of water and debris that entered the pond, the weep-hole on the riser pipe plugged up. This has changed the permanent pool elevation of the pond since it is unable to discharge, thereby changing the pond's ability to effectively treat a storm event. Tony indicated that Colowyo would be pumping the pond down that week and cleaning out the weep-hole and riser, if necessary. There was a large amount of new sediment that entered the pond during and after the storm as well. Finally, there was enough runoff going into the pond that water and sediment made it up to the level of the emergency spillway and just entered the spillway. No water, however, discharged through the emergency spillway, as evidenced by the high water mark around the inside of the pond and the emergency spillway. 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. Prior to the recent storms, Colowyo had estimated that there is approximately 4,000 yards of material in the pond that will be cleaned out this year. This amount has increased, as mentioned above. Colowyo was looking at using some of the sediment as "borrow" for the construction of the Section 28 Pond embankment but, due to the material now being saturated (the pond had been dry most of the summer), this may not be possible. If this option is pursued, lab test will need to be performed to verify its suitability for use in the embankment. -The Gulch A Pond (NPDES 004A) contained water approximately two 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. Goodspring Creek was flowing (very muddy) at the time of the inspection. -The Section 16 Pond (NPDES 009) was not inspected. -The Streeter Pond (NPDES 001 A) contained water approximately one foot below the discharge pipe and was discharging through the weep hole 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.