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1Ak <br /> Protective Steel Outer Casing <br /> ' Measuring Point on Top of PVC Casing <br /> Ground Surface <br /> ' 5%Bentonite Cement Grout <br /> 2-inch Diameter Schedule 40 PVC <br /> Bentonite Seal <br /> Approximate 2 feet Thick <br /> 3 to 5 feet [ <br /> 10-feet of 2-inch Diameter <br /> 0.020-inch Slotted PVC Casing <br /> (Screened Between 6 and 20 ft bgs) <br /> No.3 Monterey Sand Filter Pack <br /> 8-inch Diameter Hole Threaded PVC End Cap <br /> FIGURE 7 <br /> SCHEMATIC DIAGRAM OF <br /> PROPOSED PIEZOMETERS <br /> KOPPEL STOCKTON TERMINAL <br /> STOCKTON,CALIFORNIA <br /> anv-oozFes <br /> CH2MHILL <br />