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TRAFFIC RATED STEEL WELL BOX <br /> GROUND SURFACE <br /> CONCRETESURFACESEAL <br /> LOCKING WELL CAP <br /> 2-IN DIAMETER SCHEDULE 40 PVC <br /> CASING <br /> 4—CEMENT GROUT SEAL <br /> 1-FT THICK \ <br /> 1-FT ABOVE TOP 44 BENTONITE SEAL <br /> OF WELL SCREEN <br /> APPROXIMATE <br /> 10-FT DEPTH <br /> GRADED SAND FILTER PACK <br /> 2-IN DIAMETER SCHEDULE 40 PVC <br /> WELL SCREEN 0 020" SLOT SIZE <br /> 20 FT <br /> - 7-IN DIAMETER BOREHOLE <br /> do 2-IN PVC BOTTOM CAP <br /> APPROXIMATE 30-FT_ NOT TO SCALE <br /> DEPTH <br /> Plate PROPOSED MONITORING WELL CONSTRUCTION DETAIL • <br /> Former Shell Service Station envl�'�s <br /> 1257 Country Club 407 <br /> Stockton, California <br /> Drawn By DML Date 22-Oct-97 Approved by Date <br />