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Colowyo C-1981-019 26 April 2006 Pg 3/5 ~~ Hydrologic Balance (cont.): -The Rail Loop Pond (NPDES OObA) 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 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 at a rate of approximately 2 GPM through the weep-hole (the flow was so low that it was not measurable on the flume). 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 were noted on the pond embankment. -The Streeter Pond (NPDES 001 A) contained water approximately one foot below the top of the discharge pipe but was discharging through the weep-hole. The discharge appeared to be clear. The pond embankment was well vegetated and appeared to be stable at the time of the inspection. The top of the embankment was in a roughened condition due to the requirement of an MSHA berm for the equipment during last summer's pond cleaning. There were no erosional problems noted on the pond embankment. The CDOT has cleaned the culvert under Colorado Highway 13 so the discharge from the pond is no longer backing up. -The Gulch A Pond (NPDES 004A) contained water approximately three feet below the top of 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. - The Prospect Pond (NPDES 007A) contained water approximately seven feet below the discharge pipe and was not discharging. 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 at the time of the inspection. -All of the culverts at the site were checked during the inspection. The culverts are all larger than required and all of the culverts have a minimum open volume to meet regulatory requirements (for example, culvert O is a 24" culvert but the opening of the culvert is only required to be 16"). Culverts A, B, C, D, E, F, G, H, I, J, L, N, and P were all clean at the time of the inspection. Culvert O contained some sediment but still had the required 20" opening. Culvert K only had a 15" opening (and the required opening is 20") and culvert M is right at its 24" required opening. Culverts K and M need to be cleaned. Additionally, the culverts from the haul road ditches above culverts A and B need some work. The culvert above A is approximately 75% filled and needs to be cleaned. The culvert above B has been crushed and needs to be fixed. Finally, the 10-foot Taylor Creek culvert that runs under the haul road (by the Y to the Gossard Loadout) was clean at the time of the inspection. 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.