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SHAD RI I/Ssc <br /> TELESCOPING OR <br /> "r} HINGED COVER <br /> cr KEY PADLOCK 0.3' MA�—.—� <br /> OVERSIZED CAP OR <br /> UNDERSIZED PLUG —PROTECTIVE CASING <br /> *i 'A' DIA. DRAINAGE PORT 2.5'1 <br /> s /COARSE GRAVEL BLANKET <br /> fl'"o�U`o v�;V"R�V"y- '•e3 •..v.'�'J .-, -- <br /> KOe:p�o.eop! D 0.5's <br /> GROUND SURFACEGROUT <br />(ty' INTERNAL MORTAR COLLAR <br /> CENTRALIZER -- <br /> r <br /> COUPLING <br />,P. <br /> � hI —?— <br /> BENTONITE SEAL — 5' MIN. FOR PELLETS <br /> �I OR 5' MAX. FOR SLURRY <br /> WELL SCREEN <br /> FILTER PACK <br /> CAP OR PLUG <br /> 3' MAX. <br /> Figure 4.2.2.1 REMEDIAL INVESTIGATION/IONI <br /> LITY STUDY <br /> TYPICAL WELL CONSTRUCTION Sharpe FEASIBlArmy Depot <br /> Lathrop, California <br /> - -- - o <br /> U.S. Army <br /> Toxic and Hazardous Materials Ager <br /> SOURCE' ESE, 1988. Aberdeen Proving Ground, Mary[ <br /> 4-13 <br />