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Y b <br /> Christy box <br /> Ground surface <br /> 0 <br /> Neat cement <br /> Volclay seal: <br /> 5 . <br /> 6-inch layer of bentonite <br /> Static water level ;; chips or pellets <br /> 17 ' <br /> •` flinch-diameter 0.030-inch slot <br /> 10 - •: :, schedule 40 circum-slot screen <br /> Target dewatering <br /> m level. <br /> Lonestar 8 mesh sand <br /> lT-- 01 ' <br /> w Approximate pump ±` 10-inch-diameter boring <br /> 015 intake level <br /> 4-inch-diameter, schedule 40 <br /> 1 a. c• screen, possibly 0.020-inch slot <br /> circum-slot screen <br /> 20 '' Filter pack likely Lonestar#2/16 <br /> =" (to be determined after drilling) <br /> 23' End cap <br /> 25 Total depth <br /> 25 feet <br /> Notes: <br /> 1).Wells will have either screen or blank casing between <br /> 18 and 23 feet, depending on stratigraphy. <br /> 2) Surface completion details will depend on extraction <br /> system design. <br /> PRELIMINARY SOIL VAPOR AND . Figure <br /> GROUNDWATER EXTRACTION WELL DESIGN 2 <br /> OEOMATRIX - Corral Hollow and Grant Line Road ?ro,ect No. <br /> Tracy, California 3958 <br /> >.sse.co, <br />