2011-03-31_INSPECTION - C1981022

• Permit No: C1981022
• IBM Index Class Name: Inspection
• Doc Date: 3/31/2011
• Doc Name: Inspection Report
• From: DRMS
• To: Oxbow Mining, LLC
• Inspection Date: 3/23/2011
• Email Name: MPB
• Email Name: SB1
• Media Type: D
• Archive: No

Nlarch 23, 2011 C- 1981- 022/Elk Creek Mine MPH
Inspection Topic Summary
NOTE: Y= Inspected N Not Inspected R=Comments Noted V= Violation Issued NA Not Applicable
Y - Air Resource Protection
R - Availability of Records
Y - Backfill & Grading
NA - Excess Spoil and Dev. Waste
Y - Explosives
Y - Fish & Wildlife
R - Hydrologic Balance
Y - Gen. Compliance With Mine Plan
R -Other
R - Processing Waste
INTRODUCTION:
R - Roads
Y - Reclamation Success
Y - Revegetation
Y -Subsidence
R - Slides and Other Damage
R -Support Facilities On -site
Y -Signs and Markers
Y -Support Facilities Not On -site
NA - Special Categories Of Mining
Y -Topsoil
This was a complete inspection of the Elk Creek Mine conducted by Mike Boulay of the Colorado Division of
Reclamation, Mining and Safety on March 23, 2011. Jun Kiger, Environmental Manager for Oxbow Mining, LLC
(OMLLC) was present during the entire inspection. Weather conditions were cloudy and cool with rain and snow
forecast for later in the day. Ground conditions were wet and muddy in some locations.
AVAILABILITY OF RECORDS —Rule 5.02.4(1):
The availability of records was checked on the afternoon of 3/23. All required records were on file and available
for review at the OMLLC office. No problems were noted with the records review. OMLLC does an excellent
job at maintaining and updating the records file. The records are organized and easily accessible. See the attached
Availability of Records checklist.
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 4.052; 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:
Site Sedimentation Ponds A, B, D, East Yard pond and the Substation No. 3 Pond were inspected. Ponds C & E
were not inspected because the haul road to the West Valley fill and II -West Valley Fill was very muddy and
rutted. All of the ponds inspected were retaining water. The East Yard Pond had been cleaned out since the time
of the last inspection and now has adequate storage volume. The sedimentation ponds are all maintained and
capable of functioning as intended. Pond embankments, inlets and discharge structures were stable and no
problems were noted at any of the sediment pond locations. Some of the rock and soil material from the slide area
described above was stockpiled at Substation No.3 and will be used for fill and leveling of the site (see attached
Photograph No. 1).
Number of Partial Inspection this Fiscal Year: 6
Number of Complete Inspections this Fiscal Year: 3
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