_INSPECTION - C1981019 ‎(28)‎

• Permit No: C1981019
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• From: DRMS
• To: Colowyo Coal Company
• Inspection Date: 12/8/2010
• Email Name: JRS
• Email Name: SB1
• Media Type: D
• Archive: No

December 8, 2010 C-1981-019/Colowyo Coal Mine JRS
Inspection Topic Summary
NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable
N -Air Resource Protection R -Roads
N -Availability of Records N -Reclamation Success
R -Backfill&Grading R -Revegetation
N -Excess Spoil and Dev.Waste N - Subsidence
N -Explosives N - Slides and Other Damage
N -Fish&Wildlife N - Support Facilities On-site
R -Hydrologic Balance N - Signs and Markers
R -Gen. Compliance With Mine Plan N - Support Facilities Not On-site
N -Other N - Special Categories Of Mining
N -Processing Waste R -Topsoil
COMMENTS
This was a partial inspection of the Colowyo Mine conducted on 8 December 2010 by Jim Stark of the Colorado
Division of Reclamation,Mining and Safety. Andy Thompson of Colowyo accompanied me in the early morning
of 8 December 2010 and Kurtis Blunt of Colowyo accompanied me for the rest of the inspection. Kathy Bower
with the Division of Water Resources also accompanied us on part of the inspection. The mine was actively
mining and hauling coal at the time of the inspection. The weather was cold and mostly clear and there was
patchy snow on the ground. The areas that did not have snow were either frozen or very muddy(depending on the
time of day).
BACKFILL and GRADING—Rule 4.14; Contemporaneous Reclamation 4.14.1; Approximate Original Contour
4.14.2; Highwall Elimination 4.14.1(2)(f); Steep Slopes 4.14.2,4.27; Handling of Acid and Toxic Materials
4.14.3; Stabilization of Rills and Gullies 4.14.6:
-Colowyo has completed the backfilling and regrading in the 2010 West Pit area,the R3 coal stockpile area and
the East Pit wedge area. The 2010 East Pit reclamation block was inaccessible at the time of the inspection. The
Division will inspect the 2010 East Pit reclamation block in the spring or early summer of 2011 (as conditions
permit)a look at the backfilling and grading and post-mining topography.
HYDROLOGIC BALANCE -Rule 4.05; Drainage Control 4.05.1,4.05.2,4.05.3; Siltation Structures 4.05.5,
4.05.6; Discharge Structures 4.05.7,4.05.10; Diversions 4.05.4; Effluent Limits 4.05.2; Ground Water
Monitoring 4.05.13; Surface Water Monitoring 4.05.13;Drainage—Acid and Toxic Materials 4.05.8;
Impoundments 4.05.6,4.05.9; Stream Buffer Zones 4.05.18:
-During the inspection Kathy Bower, a water commissioner from the Division of Water Resources,joined us to
look at the stock tanks in the East Pit. As a part of the Partial Phase III Bond Release SL-05, Colowyo is
permitting the stock tanks in the East Pit as permanent,post-mining features. There are eight stock tanks located
in the SL-05 area,A,B,C,D, E,F,L and M. The purpose of Kathy Bowers field visit was to determine if the
stock tanks meet their rules regarding these structures. Stock Tank E contained a small amount of water. The
embankment was well vegetated and stable. Stock Tank F was dry at the time of the inspection. The embankment
Number of Partial Inspection this Fiscal Year: 6
Number of Complete Inspections this Fiscal Year: 2
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