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Protective Surface Casing <br />Concrete Pad <br />Well Centralizers <br />(Every 40') <br />10-20' Length Screen <br />2' Sediment Trap <br />Threaded Bottom Cap <br />131420AI.WP WkC-Vch DI. IIIWW .I -Jo <br />'_ocking Well Cover <br />Figure 3 <br />Well Construction Details <br />Disco Site <br />Stockton, CA <br />I <br />round Surface <br />,ement Grout <br />3" Diameter Borehole or <br />10" Diameter Borehole <br />?" Diameter PVC (Schedule 40) or <br />3" Diameter PVC (Sch 80) <br />2' Bentonite Seal <br />Well Centralizers <br />Filter Pack Sand <br />(Sized from grading analysis) <br />Well Centralizers <br />- a <br />CH2MHILL---j <br />