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PEABODY COAL COMPANY - WESTERN DIVISION <br />~~ONITOR WELL CONSTRUCTION AND COMPLETION SUMMARY <br />Mine: Yoast Monitor 41e11 Name: YOV25 • <br />Location Coors: S 33768 W1010 Lithologic Unit Monitored: Wadge Overburden <br />Ground S urface Elev: 7560 Total Depth: 90 ft. <br />Peabody Personnel: Driver (USGS) Driller: Arguello <br />Type of Drilling: Rotary Drilling Fluid: Water <br />Borehole Diameter: 6.75 in. Completion Date: 9/8/80 <br />Well Construction Diagram ~ Completion Details <br />Depths Details <br />See Accompanying <br />Well Construction <br />Diagram <br />Casing Specs <br />Blank <br />Perforated <br />4 inch PVC w/ vertical slots <br />Blank Interval(s) 0 to 50 ft. <br />Perforated Interval(s) 50 to 90 ft. <br />Packer and/or Cement Basket Set At 50 ft. <br />Bentonite Seal From To <br />Cement Seal From 41.2 To 50 ft. <br />Gravel Pack From To <br />Casing Height or MP Above Ground Surface <br />Additional Details Unrecorded amount of cement a± surface <br />plug set on top of a packer. Total depth of well measured <br />on 6/22/90 was 47.54 feet. <br />Development Summary <br />Comments: <br />4 inch PVC <br />7-1-78 <br />