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: 081 State: Colorado File Name: C022-081
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 and Methane Degas Wells

Subtask Quantity Cost Total

Degas Wells CBM 1-11
Bottom Plug 11 $ 176.11 $ 1,937.21
Fill Holes with Concrete 3805 $ 8.80 $ 33,484.00
Borehole Marker 11 $ 2.17 $ 23.87
Drill Rig Time 88 $ 170.22 $ 14,979.36
Water Truck Time 88 $ 44.99 $ 3,959.12

Degas Wells B6 and H10
Bottom Plug 2 $ 125.50 $ 251.00
Fill Holes with Concrete 443 $ 8.80 $ 3,898.40
Borehole Marker 2 $ 2.17 $ 4.34
Drill Rig Time 16 $ 170.22 $ 2,723.52
Water Truck Time 16 $ 44.99 $ 719.84

Drill Holes SC 1-4
Bottom Plug 4 $ 125.50 $ 502.00
Fill Holes with Concrete 2070 $ 8.80 $ 18,216.00
Borehole Marker 4 $ 2.17 $ 8.68
Drill Rig Time 32 $ 170.22 $ 5,447.04
Water Truck Time 32 $ 44.99 $ 1,439.68

Borehole at Substation 3
Bottom Plug 1 $ 149.12 $ 149.12
Fill Holes with Concrete 444 $ 8.80 $ 3,907.20
Borehole Marker 1 $ 2.17 $ 2.17
Drill Rig Time 8 $ 170.22 $ 1,361.76
Water Truck Time 8 $ 44.99 $ 359.92

Degas Wells CBM-12 -15
Bottom Plug 4 $ 149.12 $ 596.48
Fill Holes with Concrete 640 $ 8.80 $ 5,632.00
Borehole Marker 4 $ 2.17 $ 8.68
Drill Rig Time 32 $ 170.22 $ 5,447.04
Water Truck Time 32 $ 44.99 $ 1,439.68

,TASK TOTAL $ 106,498.11
jrs Page 1 5/7/2008