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1. <br />r a <br />18w TOP OPENING <br />CONC. COVER <br />CONCRETE CHRISTY BOX <br />WITH METAL LID <br />1.5w DIAPETER <br />BLANK VC CEMENT/BENTONITE <br />CASING GROUT <br />to <br />DISCHARGE TUBE <br />PRESSURE/VACUUM <br />ZLI-----TUBE <br />LYSIMETER BENTONITE SEAL <br />BODY TUBE <br />POROUS CERAMIC CUP <br />SILICA FLOUR <br />NOT TO SCALE <br />.e. <br />GENERAL LYSIMETER CONSTRUCTION <br />FORWARD, <br />SAN JOAQUIN COUNTY;CALIFORNIA <br />