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PEABODY COAL COMPANY - WESTERN DIVISION <br />MONI70R WELL CONSTRUCTION AND COMPLETION SUMMARY <br />Mine: Seneca 2 - W Monitor Well PJame: Or! -52:.1-15-1~1 <br />Location Coors: SE 1/ 4. SW 1/4. 515. T~J, R88W _ <br />Ground S urface Elev: 7543.38 Total Depth: 340.8 ft. <br />Peabody Personnel: D.Jones Driller: Winnek Drilling Co. <br />Type of Drilling: rotary Drilling Fluid: water <br />Borehole Diameter: to 20 ft. 6.75 inch Completion Date: 9/20/87 <br /> reminder 4. inc <br />Well Construction Diagram ~ Completion Details <br />Depths <br />TOP CAP <br />5 IN. PVC <br />o.o ~= <br />Cement Giros <br />3.0 - <br />2 IN. PVC. <br />I <br />i <br />100.0 - <br />~I <br />blank casing - <br />200.0 <br />Bentonite~pel~ <br />let hole plug <br />300 <br />326.5 - <br />3z7.o - <br />2 Packers <br />Well Screen <br />340.8 -- <br />END CAP <br />'I <br />Details <br />e• <br />a~ <br />e ° <br />o. <br /> <br />., <br />~o ~ <br />~o ' <br />~` <br />--~ -- <br />•o <br /> <br />• <br />Casing Specs: Blank 2 inch schedule 80 pvc, flush threaded <br />Perforated 2 inch schedule BO pvc, 4 colums of <br />-horizontal mill slots with .02 - .025 inch openings <br />Blank Interval (s) 0.0 - 327.0 ft. <br />Perforated Interval(s) 327 -340.5 ft. <br />Packer and/or Cement Basket Set At 2 packers set at 326.5 and <br />327.0 feet. <br />Bentonite Seal From 0.0 ft. To 326.5 ft. <br />Cement Seal From 0.0 ft. To 3.0 ft. <br />Gravel Pack From rrone To <br />Casing Height or MP Above Ground Surface 2.43 ft.- <br />Additional Details- ~~.~ 5 inch_ovc around 2" for too 3 feet, <br />a sn311 aTrnmt of gravel was used to keep the packers expanded and rigid. <br />Development Summary !Jell :~~as developed ~v eailing on <br />10/5/87. <br />:. <br />pee <br />i i <br />'v <br />Comments: *Bentonite hole plug_bridoed during installation <br />after 3 5 bags were poured. <br />B-21 <br />r1 <br />U <br />