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Groundwater Monitoring Well Construction Diagram <br /> PVC sealing <br /> well cap Steel stovepipe well <br /> vault with locking cover <br /> 2-in. Schedule 40 PVC <br /> blank casing(0-25 ft.) <br /> Cement grout(0-19 ft.) <br /> Bentonite pellets <br /> (19-22 ft.) <br /> Approx.depth <br /> 30 ft bgs <br /> Filter sand <br /> (22-45 ft.) <br /> 2-in.PVC well <br /> screen 0.020"slot <br /> (25-45 ft.) <br /> PVC flush thread <br /> bottom cap <br /> Estimated Total Depth=445 ft. bgs <br /> (all depths subject to revision to accommodate field conditions, including depth <br /> of first encountered water) <br /> Geosynte& <br /> WELL C ON ?U TION OIAGRAAA consultants <br /> WESTERN FARM SERVICE. INC. FIGURE N0. 3 <br /> VERNALIS. CALIFORNIA PROJECT N0. WROS49 <br /> P:\as\wmabW\o7.iay\"-ExpvW*d pW r n_w._a.9"..1 DATE: A <br /> 7 <br />