_INSPECTION - C1981019 (48) - Laserfiche WebLink

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Colowyo C-1981-019 20 May 2008 Pg 2/5 Roads (cont.): - The haul roads in the Bower project area (topsoil removal) are well maintained and appear to be stable. These roads are in the Taylor Draw and along the west edge of the Section 16 Pit. There is also a haul road that was constructed just south of the existing Section 16 Pit. This road is for continued topsoil removal operations in advance of the mining in the South Taylor area (the box-cut area). No erosional problems were noted on the roads. Hydrologic Balance: - The wash bay pond (not a NPDES discharge point) contained water approximately two feet below the top of the embankment and was not discharging. This is a total containment pond and discharge into the Work Area Pond triggers BTEX testing (in addition to regular NPDES testing). The operator and the contractors use this pond for water for their water trucks. 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. - The work area pond (NPDES 002A) contained water approximately two 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 embankment at the time of the inspection. - 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 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 a 12" culvert. There is sediment in the pond that will need to be cleaned out. The sump at the inlet of the pond seems to be functioning as designed, as it has trapped a fair amount of sediment (coal fines). - Sump 2 has been cleaned out. The sump contained water approximately four feet below the top and appeared to be stable at the time of the inspection. - Sump 3 appears to have been cleaned out. The sump contained water approximately one foot below the top and appeared to be stable at the time of the inspection. - Sump 4 has been cleaned out. The sump contained very muddy water approximately three feet below the top and appeared to be stable at the time of the inspection. - Sump 5 was full at the time of the inspection. It was unclear whether or not the sump had been cleaned out. - The Rail Loop Pond (NPDES 006A) was inaccessible at the time of the inspection due to a train being loaded. - The West Taylor Pond was inaccessible at the time of the inspection due to water on the road. Please see "Roads" above for more details on the road conditions. - The Section 16 Pond (NPDES 009) was inaccessible at the time of the inspection due to mud. It should be accessible in June.