2010-11-17_INSPECTION - C1981019

• Permit No: C1981019
• IBM Index Class Name: INSPECTION
• Doc Date: 11/17/2010
• Doc Name: Inspection Report
• Inspection Date: 11/3/2010
• Email Name: JRS
• Media Type: D
• Archive: No

November 3, 2010 C-1981-019/Colowyo Coal Mine JRS e??
ROADS - Rule 4.03 Construction 4.03.1(3)/4.03.2(3) Drainage 4.03.1(4)/4.03.2(4) Surfacing and
Maintenance4.03.1(5) and (6)/4.03.2(5) and (6) Reclamation 4.03.1(7)/4.03.2(7):
- The main haul road and access road for the mine site is a paved road. The road is stable and well maintained.
- The South Taylor Haul Road was well maintained and stable at the time of the inspection. Colowyo is
continually performing maintenance on the road in the form of blading, watering and surfacing with rock.
Colowyo was actively blading and watering the road at the time of the inspection.
- Colowyo has a network of in-pit roads in the South Taylor Pit area. There roads go to the East and West Taylor
Fills and also link up to the South Taylor Haul Road. These roads are also continually maintained.
- Colowyo has a network of in-pit roads in the East Pit for moving equipment and topsoil in the reclamation areas.
These roads are maintained as needed. The roads are removed within each reclamation block as reclamation is
completed.
TOPSOIL - Rule 4.06 Removal 4.06.2; Substitute Materials 4.06.4(4); Storage and Protection 4.06.3;
Redistribution 4.06.4:
- Colowyo has completed topsoil replacement on the regraded R3 coal stockpile area behind the shop and
warehouse. The area is going to be reseeded as a sagebrush steppe area and, as such, will have four inches of
topsoil. Five topsoil test holes were dug in this area, with an average replacement depth of 4.5 inches being
replaced. The following chart shows the test hole locations and depths.
Hole Depth (in.) Northing Easting
R3-TS-2010-001 5 4460986.8 260889.4
R3-TS-2010-002 5 4461019.0 260936.6
R3-TS-2010-003 3.5 4461110.2 260937.7
R3-TS-2010-004 4 4461176.8 260932.6
R3-TS-2010-005 5 4461071.4 260877.3
- Colowyo has completed topsoil replacement on the majority of the 2010 West Pit reclamation. There are a few
areas on the north edge of the reclamation block (including the portion that was recently regarded, as noted in
"Backfilling and Grading" above) where the topsoil has not been replaced. The total area that still needs topsoil is
less than 10 acres. The West Pit will now have a variable topsoil replacement depth, with depths ranging from
four inches for sagebrush steppe areas to approximately 18 inches in the drainage bottoms. The majority of the
2010 West Pit reclamation area is planned to be seeded as sagebrush steppe and, as such, will have four inches of
topsoil. The following chart shows the test hole locations and depths.
Hole Depth (in.) Northing Easting
WP-TS-2010-001 6 4460055.3 259449.1
WP-TS-2010-002 4 4459943.3 259428.9
WP-TS-2010-003 4 4459790.6 259401.8
WP-TS-2010-004 4 4459642.0 259374.8
WP-TS-2010-005 4 4459512.1 259351.0
WP-TS-2010-006 6 4459386.3 259328.3
WP-TS-2010-007 4 4459336.8 259491.4
Number of Partial Inspection this Fiscal Year: 5
Number of Complete Inspections this Fiscal Year: 2
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