2008-05-09_REVISION - C1981022 ‎(3)‎

• Permit No: C1981022
• IBM Index Class Name: REVISION
• Doc Date: 5/9/2008
• Doc Name: Cost Estimate Memo ‎( 2 of 2)‎
• From: Jim Stark
• To: Marcia Talvitie
• Type & Sequence: PR5
• Email Name: JRS
• Media Type: D
• Archive: No

Task: 084 State: Colorado
Date: 7 May 2008 County: Delta and Gunnison
User: JRS Site: Elk Creek Mine
Permit No. C-1981-022
Permit Action: Permit Renewal 05

Task Description: Plug and Seal Boreholes Associated with TR's 5 4, 56, 57 and 58

Task Dimensions Quantity Cost Total

TR-54 GVB's (11)
Bottom Plug 7" Case 11 $ 149.12 $ 1,640.32
Fill Holes with Cement 7" Case 2622 $ 8.80 $ 23,073.60
Remove Methane Pump NA 11 $ 116.27 $ 1,278.97
Borehole Marker NA 11 $ 2.17 $ 23.87
Drill Rig Time NA 132 $ 170.22 $ 22,469.04
Water Truck Time NA 132 $ 44.99 $ 5,938.68

TR-56 B-Seam Rib Hits 14)
Bottom Plug 9-5/8" Case 4 $ 176.11 $ 704.44
Fill Holes with Cement 9-5/8" Case 2030 $ 8.80 $ 17,864.00
Cut Casing at Surface 9-5/8" Case 4 $ 8.18 $ 32.72
Borehole Marker 9-5/8" Case 4 $ 2.17 $ 8.68
Drill Rig Time NA 12 $ 170.22 $ 2,042.64
Water Truck Time NA 12 $ 44.99 $ 539.88

TR-57 GVB's (2)
Bottom Plug 9-5/8" Case 2 $ 176.11 $ 352.22
Fill Holes with Concrete 9-5/8" Case 860 $ 8.80 $ 7,568.00
Cut Casing at Surface 9-5/8" Case 2 $ 8.18 $ 16.36
Borehole Marker 9-5/8" Case 2 $ 2.17 $ 4.34
Drill Rig Time NA 12 $ 170.22 $ 2,042.64
Water Truck Time NA 12 $ 44.99 $ 539.88

TR-58 GVB's (2)
Bottom Plug 9-5/8" Case 2 $ 176.11 $ 352.22
Fill Holes with Concrete 9-5/8" Case 1016 $ 8.80 $ 8,940.80
Cut Casing at Surface 9-5/8" Case 2 $ 8.18 $ 16.36
Borehole Marker 9-5/8" Case 2 $ 2.17 $ 4.34
Drill Rig Time NA 16 $ 170.22 $ 2,723.52
Water Truck Time NA 16 $ 44.99 $ 719.84

TASK TOTAL $ 98,897.36
jrs Page 1 5/7/2008