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• <br />• <br />• <br />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 />Well Completion <br />(feet) <br />8" vented steel casing stick up: 3.9' <br />locking cap <br />0 <br />3'x 3'x 10" concrete pad with 4 traffic posts <br />4" stainless steel casing stick up: 3.4' <br />-3.9'- 15.8': 8" steel surface casin <br />cemented in 9 7/8 -inch borehole <br />60 <br />-3.4'- 715.2': 4 -inch diameter <br />304 stainless steel casing <br />120 <br />V-749.7% 97/8-inch diameter <br />borehole -� <br />180 <br />Notes: <br />240 <br />1) Stainless steel centralizers installed at top and bottom of screen <br />and at 100 -fool 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 />420 <br />480 <br />540 <br />563.80 bloc': static water level <br />600 <br />701.3'- 712.6: - Enviroplug 3/8" <br />660 <br />coated bentonile pellet seal <br />712.6-744.0% 8 -12 gradation <br />7152-7352: 0.020 -inch <br />Cameuse Industrial silica sand <br />mill slot 316 stainless steel screen <br />720 <br />744.0'- 749.7': - Enviroplug 3/8" <br />coated bentonite pellets <br />735.2' - 740.2': blank 316 stainless steel sump with end cap <br />H I <br />749.7'- 797.0': borehole cuttings <br />749.7': total depth 9 7/8 -inch borehole <br />fill to bottom of 5 1/4" borehole <br />All depths below ground surface unless otherwise noted (not to scale). <br />