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t <br /> i <br /> Protective Surface Casing Locking Well Cover <br /> { Concrete Part / Ground Surface <br /> I f <br /> i' <br /> Cement Grout <br /> R <br /> Well Centralizers 6"Diameter Borehole or <br /> (Every 40') 10"Diameter Borehole <br /> 2" Diameter PVC(Schedule 40) or <br /> 6"Diameter PVC (Sch 60) <br /> i' <br /> , <br /> � . <br /> 2' Bentonite Seal <br /> I <br /> I <br /> Well Centralizers <br /> 10-20'Length Screen — Filter Pack Sand <br /> (Sized from grading analysis) <br /> 2'Sediment Trap = <br /> Well Centralizers <br /> Threaded Bottom Cap <br /> Figure 3 <br /> ( g <br /> Well Construction Details <br /> Disco Site <br /> Stockton,CA <br /> M4ft ll.WPwda.YcmDOM=ffWdo CH2MHILL <br />