_INSPECTION - C1981019 ‎(40)‎

• Permit No: C1981019
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• Inspection Date: 4/16/2008
• Email Name: JRS
• Media Type: D
• Archive: No

Colowyo C-1981-019
16 April 2008
Pg 2/5
Roads (cont.): - The road in Taylor draw was a bit muddy with some small puddles of
water. The road had some minor rutting from the wet, winter weather but it
appeared to be stable and was in overall good condition.
- The road to the Anson topsoil stripping operation was closed at the time of the
inspection because dirt from the melting snow was sloughing off of the side-slopes
and onto the road. This condition was causing a safety problem, necessitating its
closure. We looked at the road from the haul road above and the road has been
bladed, removing most of the ruts that were there the last few months. The road
appeared to be in much better condition.
Hydrologic Balance: - Culverts K and M were both inspected. Culvert M was clear
but the sump before the culvert was filled in with sediment. Culvert K had some
sediment in it but appeared to still have enough flow room left to meet the required
20". Nonetheless, culvert K will need to be cleaned.
- The wash bay pond (not a NPDES discharge point) contained water approximately
three 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 Gossard Pond (NPDES 003A) contained water approximately four 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.
- The Rail Loop Pond (NPDES 006A) contained only a small amount of water and was
not discharging. There was a lot of sediment in the pond, which will need to be
cleaned out. The pond embankment was well vegetated and appeared to be
stable. No erosional problems were noted on the pond embankment at the time of
the inspection. The emergency spillway was an open channel that appeared to be
stable at the time of the inspection.
- The Prospect Pond (NPDES 007A) contained water to the top of the riser and was
discharging from both the top of the pipe and from the weep hole at the bottom of
the discharge pipe at the time of the inspection. The water in the pond looked
muddy but the discharge looked clear. There already appears to be a good deal
of sediment in the Prospect Pond from the spring runoff. 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
appeared to be stable and well maintained at the time of the inspection.
- The Section 16 Pond (NPDES 009) was inaccessible at the time of the inspection due
to mud. The pond should be accessible in May when the area dries out a bit more.