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Figure 4 <br /> Schematic of Monitoring Well Construction <br /> to Test the Upper Aquifer <br /> MW-2R and MW-4 - 9 <br /> Water Tight Lid <br /> Ground Suface <br /> Locking Cap <br /> Well Box <br /> Cement Grout <br /> (5'-Surface) <br /> Well Casing <br /> 7 <br /> Bentonite Annular Seal <br /> (8-5') <br /> V Ground Water Level <br /> #3 Sand Filter Pack <br /> (TD-8') <br /> Perforated Casing <br /> (TD-10') <br /> Aquifer <br /> Borehole <br /> End Cap <br /> Clay (Aquitard) TD-25' <br />