2011-06-27_REVISION - C1981022 (3)

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GVB -LW- 4120102 19 -08C 1439318 NE1 /4 S31 T12SR9OW 8140' 2600'/15 9 5/8" Same as 19 -08 Same 19 -08 Notes: Standard CBM well construction involves drilling 15" OR 12.25" borehole to approximately 2300 foot depth and cementing 9 -5/8" casing, then drilling 8 -3/4" borehole into the projected longwall fracture zone and casing the fracture zone with 6 -5/8" slotted casing for methane drainage. Typical GVB well construction involves drilling 12.25" or 9 5/8" borehole to 20' above coal. 9 5/8" casing installed and cemented to 100' above coal. 100' of slotted 7 inch liner to bottom of borehole extending up into the 9 5/8" casing 50'. As noted, new road disturbance may provide access to several wells (existing roads used as noted). Some new road segments may be retained in conjunction with existing ranch roads to provide ongoing access for the surface owner. TR -71 and 72 8 June 2011 GOBVENT/ METHANE DRAINAGE BOREHOLE. DISTURBANCE SUMMARY Well No. Location Depth/ Inclination Borehole Diameter Completion Date /Life Road Disturbance Pad Disturbance Northin s Eastin! Surve Collar Elev. GVB -LW- 4120102 19 -08C 1439318 NE1 /4 S31 T12SR9OW 8140' 2600'/15 9 5/8" Same as 19 -08 Same 19 -08 Notes: Standard CBM well construction involves drilling 15" OR 12.25" borehole to approximately 2300 foot depth and cementing 9 -5/8" casing, then drilling 8 -3/4" borehole into the projected longwall fracture zone and casing the fracture zone with 6 -5/8" slotted casing for methane drainage. Typical GVB well construction involves drilling 12.25" or 9 5/8" borehole to 20' above coal. 9 5/8" casing installed and cemented to 100' above coal. 100' of slotted 7 inch liner to bottom of borehole extending up into the 9 5/8" casing 50'. As noted, new road disturbance may provide access to several wells (existing roads used as noted). Some new road segments may be retained in conjunction with existing ranch roads to provide ongoing access for the surface owner. TR -71 and 72 8 June 2011