_INSPECTION - C1982056 ‎(55)‎

• Permit No: C1982056
• IBM Index Class Name: INSPECTION
• Doc Name: Inspection Report
• From: DRMS
• To: Twentymile Coal Company
• Inspection Date: 7/26/2010
• Email Name: JDM
• Media Type: D
• Archive: No

July 26,Z010 C-1982-056/Foidel Creek Mine JDM
Inspection Topic Summary
NOTE: Y=Inspected N=Not Inspected R=Comments Noted V=Violation Issued NA=Not Applicable
N -Air Resource Protection Y -Roads
N -Availability of Records N -Reclamation Success
N -Backfill&Grading N -Revegetation
NA -Excess Spoil and Dev. Waste N - Subsidence
NA -Explosives NA - Slides and Other Damage
N -Fish&Wildlife: N - Support Facilities On-site
R -Hydrologic Balance N -Signs and Markers
Y -Gen. Compliance With Mine Plan NA -Support Facilities Not On-site
N -Other NA -Special Categories Of Mining
R -Processing Waste N -Topsoil
COMMENTS
HYDROLOGIC BALANCE -Rule 4.05❑El 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:
This partial inspection focused on the condition and functionality of the culverts throughout the main facilities
area. During the inspection a TCC generated Drainage Inspection Map was used to identify the ditch and culverts
throughout the facilities area. All culverts in the main facilities area were in place and designed as permitted with
no major damage and no maintenance issues noted with the exception of the following:
The two eastern 18"culverts of the series of four 18"culverts where RDA-2 ditch flows under the RDA access
road will require —1/2 of sediment clean out at the inlets in order to provide adequate flow as designed.
The 12"CMP culvert located at the sump off of the Pond B which provides flow from the sump to Pond B will
need to be cleared of a blockage at the inlet of the culvert in order to provide adequate flow as designed.
The 24"CMP culvert providing flow from the B-3 ditch under the railway and into Pond B will require— 1/2 of
sediment build-up to be cleared.
The 8"CMP culvert located northeast of the Warehouse and connecting ditches E-4(A)and E-1(B)will need to be
cleared of sediment build-up at the inlet.
The large sediment basin south of Pond B which collects drainage from ditches B-2 before moving to Ditch B-3
will need cleaning to ensure adequate collection of runoff.
The Collection Ditch along the railway south of Pond B (B-3)will require cleaning.
Pond B,Pond D,Pond E and Pond F contained water at the time of the inspection. The embankments were stable
and well vegetated with no problems noted with the exception of the following:
The embankments of:Pond B displayed a substantial amount of Houndstounge which is a B List species on the
Number of Partial Inspection this Fiscal Year: 1
Number of Complete Inspections this Fiscal Year: 0
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