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L� <br />• <br />0 <br />NEW ELK COAL COMPANY <br />CONSTRUCTION DIAGRAM FOR MONITORING WELL NE -1 -10 <br />Project: New Elk Coal Company, LLC Completion Date: 9/13/2010 <br />Northing: 1,179,572.3' Driller: Stewart Bros. Drilling <br />Easting: 3,161,179.9' Hydrogeologist: S. Effner, Whetstone Associates <br />Ground Elevation: 7,332.3' Screen Interval: 418.5'- 428.5' <br />Casing Elevation: 7,334.3' Formation: Allen coal seam of the Raton Formation <br />Depth <br />(feet) <br />Well Completion <br />8" vented steel casing stick up: 2.6' a locking cap <br />0 <br />Tx Tx 4" concrete pad with 4 traffic posts 4" stainless steel casing stick up: 2.0' <br />+2.6'- 10.0': 8" steel surface cesin <br />cemented in 9 718 -inch borehole <br />0'- 40.0' 10" steel surface casing <br />40 <br />cemented in 14 -inch borehole 0'- 50.0: cement <br />0'- 40.0' cemen <br />-2.0'- 433.7': 4 -inch diameter <br />304 stainless steel casing <br />80 <br />120 <br />Notes: <br />160 <br />1) Stainless steel centralizers installed at top and bottom of screen <br />and at 100 -foot intervals along blank casing. <br />2) All annular materials placed by tremmie pipe. <br />3) Filter pack settled by mechanical agitation prior to <br />200 <br />setting the seal. <br />4) Well casing hung in suspension during well construction. <br />50.0'- 391.0': high solids <br />240 <br />bentonite grout <br />0'- 441.8': 9 7/8 -inch diameter <br />borehole <br />280 <br />288.79 btoc': static water level <br />320 <br />360 <br />391.0'- 403.5': - Enviroplug 1/4" <br />coated bentonite pellet seal <br />400 <br />403.6-405.5% 10-20 gradation <br />Quikrete sand 4118.6-428.5% 0.020 -inch <br />mill slot 316 stainless steel screen <br />440 <br />4055-441.8% 8-12 gradation <br />Cameuse Industrial silica sand 428.5' - 433.7': blank 316 stainless steel sump with end cap <br />441.81: total depth 9 7/8 -inch borehole <br />480 <br />All depths below ground surface unless otherwise noted (not to scale). <br />