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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 />0 <br />8" vented steel casing stick up 2 6' A .. , locking cap <br />3' x 3' x 4" concrete pad with 4 traffic posts <br />• <br />4" stainless steel casing stick up 2 0' <br />40 <br />80 <br />120 <br />160 <br />200 <br />240 <br />280 <br />320 <br />360 <br />400 <br />440 <br />480 <br />_ <br />— <br />_ <br />_ <br />— <br />+2 6' - 10 0' 8" steel surface casin• <br />I ;•. 0 <br />`' <br />by <br />J/ <br />/ <br />, 4 � <br />♦ / J/ <br />f <br />/ //♦ <br />- 50 0' cement <br />cemented in 9 7/8 -inch borehole <br />0' - 40 0' 10" steel surface casing <br />NI <br />cemented in 14 -inch borehole <br />0' - 40 0' cemen <br />$:':'.' <br />s <br />/ / +2.0' - 433.7' 4 -inch diameter <br />50 0' - 391.0' high solids <br />304 stainless steel casing <br />Notes' <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 />setting the seal <br />4) Well casing hung in suspension during well construction <br />'// <br />bentonite grout <br />0' - 441.8' 9 7/8 -inch diameter <br />borehole <br />391.0' - 403.5'• - Enviroplug 1/4" <br />///III <br />y/ <br />/ /!� <br />288.79 btoc' static water level <br />418 5' - 428 5'. 0 020 -inch <br />coated bentonite pellet seal <br />403.5' - 405,5' 10 -20 gradation <br />Quikrete sand <br />405 5' - 441.8' 8 -12 gradation <br />' <br />mill slot 316 stainless steel screen <br />Cameuse Industrial silica sand 428 5 - 433.7' blank 316 stainless steel sump with end cap <br />441.8' total depth 9 7/8 -inch borehole <br />All depths below ground surface unless otherwise noted (not to scale). <br />