INSPEC25841

• Permit No: C1981019
• IBM Index Class Name: Inspection
• Doc Name: Inspection Report
• Inspection Date: 8/7/2006
• Media Type: D
• Archive: No

Colowyo C-1981-019
7 August 2006
Pg 3/6
Hydrologic Balance (cont.): -The East Taylor Pond (NPDES Ol OA) was dry at the time
of the inspection. The West Pit at Section 4 is blocked and 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. There is
again a good deal of sediment at the inlet of this pond. It will need to be cleaned
this fall.
-The Rail Loop Pond (NPDES OObA) was inaccessible at the time of the inspection due
to a train being loaded.
- The Stoker Siding Pond (NPDES 005A) contained water approximately five 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 were noted on the pond embankment.
-The Prospect Pond (NPDES 007) contained water approximately six feet below the
discharge pipe and was not discharging at the time of the inspection. The pond
embankment was well vegetated and stable and no erosional problems were
noted. The emergency spillway is p riprapped channel. The emergency spillway
was stable and in good condition.
-The Gulch A Pond (NPDES 004) contained water approximately eight feet below the
discharge pipe and was not discharging at the time of the inspection. There was a
small amount of sediment at the pond inlet but this may have been exaggerated
due to the pond's low water level. The pond embankment was well vegetated and
stable and no erosional problems were noted. The emergency spillway is a
riprapped channel. The emergency spillway was stable and in good condition.
-The Streeter Pond (NPDES 001) contained water approximately one and a half feet
below the discharge pipe and the discharge has stopped since the previous
inspection. The pond embankment was well vegetated and stable and no erosional
problems were noted. The emergency spillway is a riprapped channel. The
emergency spillway was stable and in good condition.
-The operator is in the process of pumping water from Section 4 of the West Pit in
preparation for the highwall miner. They are pumping the water into another area of
the West Pit. This water contains asilt/clay that will not settle out if it is pumped into
the East Taylor Pond, thus causing an exceedence of the NPDES permit.
Backfilling and Grading: -The operator continues to finish the regrading work at the
southeast 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. There is still a wedge that needs approximately 2 million cubic yards to fill.
The operator has placed grade stakes along the perimeter to show the final contour.
The dragline was operating at the time of the inspection as well as two CAT Dl 1's.