2012-05-29_INSPECTION - C1994082

• Permit No: C1994082
• IBM Index Class Name: Inspection
• Doc Date: 5/29/2012
• Doc Name: Inspection Report
• From: DRMS
• To: Roy Karo
• Inspection Date: 5/21/2012
• Email Name: SLB
• Email Name: SB1
• Media Type: D
• Archive: No

May 21, 2012 C- 1994- 082/Yoast Mine
Inspection Topic Summary
NOTE: Y= Inspected N =Not Inspected R= Comments Noted V =Violation Issued NA Applicable
NA -Air Resource Protection
R -Availability of Records
Y - Backfill & Grading
NA - Excess Spoil and Dev. Waste
NA - Explosives
R - Fish & Wildlife
R - Hydrologic Balance
Y - Gen. Compliance With Mine Plan
NA - Other
NA - Processing Waste
Y -Roads
Y - Reclamation Success
R - Revegetation
NA - Subsidence
R - Slides and Other Damage
NA - Support Facilities On -site
Y -Signs and Markers
NA - Support Facilities Not On -site
Y - Special Categories Of Mining
Y - Topsoil
COMMENTS
This was a complete inspection of the Yoast Mine conducted by Susan Burgmaier of DRMS. In addition to the
ground inspection on May 21, 2012, aerial photographs of the site were taken on May 21, 2012 and reviewed and
discussed herein.
AVAILABILITY OF RECORDS Rule 5.02.4(1):
Records were inspected on May 23, 2012, and found to be in compliance. See attached records checklist
for details.
FISH and WILDLIFE Rule 4.18:
There were two mallards on the water of Pond 012 and on Pond 014 and numerous songbirds in the
vicinity Ponds 010, 011, 012, and 014. There were two deer between Ponds 013 and 014. There were two
pronghorns east of the Pond 013 slide, and one each in the north pit and at the top of the neck pit. There was a
large jackrabbit in the north pit area, and a marmot near Pond 010.
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:
Ponds 010 and 012 were discharging clear water, Ponds 011, 011A, 013 and 014 held water below the
discharge level. Pond 012A was dry. ST -1 and the surge structure at the top of the neck pit were both dry. There
was a very low flow (trickle) through the northern underdrain of the Pond 012 slide; the main Pond 012 underdrain
was flowing about 10 -15 gpm.
The outslopes and spillways of all of the sediment ponds were stable and in good repair.
South area drainages were stable and in good repair. The section of YPM -6 that crosses LU 3)A near Pond 012A
Number of Partial Inspection this Fiscal Year: 12
Number of Complete Inspections this Fiscal Year: 4
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