2009-09-03_REVISION - C1981019

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 9/3/2009
• Doc Name: Summary Sheet & Cost Estimate
• From: DRMS
• To: File
• Type & Sequence: RN5
• Email Name: JRS
• Media Type: D
• Archive: No

Task: 090 State: Colorado
Date: 31 May 2009 County: Moffat
User: JRS Site: Colowyo Mine

Permit Renewal 05

Task Description: Plug and Seal Boreholes

Subtask Length Quantity Cost Total

WELLS TC-1 and TC-3 (10.5")
Bottom Plug 2 $ 28.28 $ 56.56
Fill Holes with Cement 3,109' 935 $ 8.62 $ 8,059.70
Cut Casing at Surface 10.5" 6 $ 2.38 $ 14.28
Borehole Marker 2 $ 3.72 $ 7.44
Drill Rig Time 20 $ 151.98 $ 3,039.60
Water Truck Time 20 $ 67.56 $ 1,351.20

Wells NGSW, A3, A6, A7 and A8 (3")
Bottom Plug 5 $ 59.77 $ 298.85
Fill Holes with Cement 256' 8 $ 8.62 $ 68.96
Cut Casing at Surface 3" 5 $ 2.38 $ 11.90
Borehole Marker 5 $ 3.72 $ 18.60
Drill Rig Time 10 $ 151.98 $ 1,519.80
Water Truck Time 10 $ 67.56 $ 675.60

Active 2" Piezometers (3)
Bottom Plug 3 $ 28.28 $ 84.84
Fill Holes with Cement 708' 7 $ 8.62 $ 60.34
Cut Casing at Surface 2" 2 $ 2.38 $ 4.76
Borehole Marker 2 $ 3.72 $ 7.44
Drill Rig Time 10 $ 151.98 $ 1,519.80
Water Truck Time 10 $ 67.56 $ 675.60

Collapsed 2" Piezometers (2)
Redrill Hole 600' 12 $ 151.98 $ 1,823.76
Bottom Plug 2 $ 28.28 $ 56.56
Fill Holes with Cement 600' 7 $ 8.62 $ 60.34
Cut Casing at Surface 2" 2 $ 2.38 $ 4.76
Borehole Marker 2 $ 3.72 $ 7.44
Drill Rig Time 4 $ 151.98 $ 607.92
Water Truck Time 16 $ 67.56 $ 1,080.96

Section 16 Piezometer (7.875")
Bottom Plug 1 $ 151.78 $ 151.78
Fill Holes with Cement 72' 12 $ 8.62 $ 103.44
Cut Casing at Surface 7.875" 1 $ 11.91 $ 11.91
Borehole Marker 1 $ 3.72 $ 3.72
Drill Rig Time 4 $ 151.98 $ 607.92
Water Truck Time 4 $ 67.56 $ 270.24
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