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PEABODY COAL COMPANY - WESTERN DIVISION <br />MONITOR WELL CONSTRUCTION AND COMPLETION SUMMARY <br />~ne• Yoast Monitor 41e11 Name: YGAL18 <br />~ocation Coors: S 43244 W 2521 Lithologic Unit Monitored:Grassy Creek <br />Ground Surface Elev: 7302 Total Depth: 50 feet <br />Peabody Personnel: None Driller: Boyles Brothers Drilling Co. <br />Type of Drilling: Auger Drilling Fluid: None <br />Borehole Diameter: 10.5 inches Completion Date: 8/24/90 <br />Well Construction Diagram ~ Completion Details <br />Depths Details <br />See Accompanying <br />Well Construction <br />Diagram <br />Casing Specs: Blank 4" schedule 40 PVC <br />Perforated 4" schedule 40 PVC w/millslots <br />Blank Interval(s) 0 - 29.3 <br />Perforated Interval(s) 29.3 - 49.0 feet <br />Packer and/or Cement Basket Set At None <br />Bentonite Seal From 0.0 To 29.0 feet <br />Cement Seal From To <br />Gravel Pack From 29.0 To 49.0 feet <br />Casing Height or MP Above Ground Surface <br />Additional Details <br />Development Summary <br />Comments: <br />7-1-39 <br />