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NEW ELK COAL COMPANY <br />CONSTRUCTION DIAGRAM FOR MONITORING WELL NE -6 -10a <br />Project: New Elk Coal Company, LLC Completion Date: 11/15/2010 <br />Northing: 1,183,658 Driller: Stewart Brothers Drilling - Milan, NM <br />Easting: 3,167,370 Hydrogeologist: S. Effner, Whetstone Associates <br />Ground Elevation: 7,367.0' Screen Interval: 715.2' to 735.2' <br />Casing Elevation: 7,370.9' Formation: Apache coal seam of the Raton Formation <br />Depth <br />(feet) <br />Well Completion <br />8" vented steel casing stick up 3 9' locking cap <br />0 <br />3' x 3' x 10" concrete pad with 4 traffic posts 4" stainless steel casing stick up 3 4' <br />' <br />+3 9' - 15 8' 8" steel surface casin• <br />cemented in 9 7/8 -inch borehole <br />60 <br />' <br />+3,4' - 715.2' 4 -inch diameter <br />304 stainless steel casing <br />120 <br />0' - 749,7' 9 7/8 -inch diameter <br />borehole •" <br />180 <br />1 <br />240 <br />)) S tainless steel centralizers installed at top and bottom of screen <br />' <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 />300 <br />setting the seal. <br />4) Well casing hung in suspension during well construction <br />0' - 701 3' cement seal <br />360 <br />1 <br />420 <br />' <br />' <br />Mi <br />480 <br />540 <br />563 80 btoc' static water level <br />600 <br />701 T-712 6' - Enviroplug 3/8" <br />660 <br />coated bentonite pellet seal <br />' <br />712 6' - 744 0' 8 -12 gradation tifigl 715 2' - 735 2' 0 020 -inch <br />Cameuse Industrial silica sand mill slot 316 stainless steel screen <br />720 <br />'' <br />744 0' - 749 7' - Enviroplug 3/8" <br />' <br />coated bentonite pellets �735,2' - 740.2' blank 316 stainless steel sump with end cap <br />I <br />749.7' - 797 0' borehole cuttings 749.7' total depth 9 7/8 -inch borehole <br />fill to bottom of 5 1/4" borehole s':. e ..rd All depths below ground surface unless otherwise noted (not to scale). <br />