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0 <br /> ZONE A: Surface Layer <br /> Mainly clay and peat <br /> 10 <br /> rn <br /> m ZONE B: Shallow Water-Bearing Zone <br /> 20 <br /> oMainly sand and silty sand <br /> 0 <br /> 3 ZONE C: Aquitard <br /> 0 30- <br /> co <br /> 0m Mainly clay with some silt and sand <br /> CI 0 <br /> Z <br /> � 40 <br /> m ZONE D: Intermediate Water-Bearing Zone <br /> v <br /> o' <br /> C, Sand <br /> 0. <br /> Q <br /> 50 - - -- - - - - - - - - - - - --- - - - - <br /> ZONE E: Aquitard <br /> Mainly clay <br /> HI <br /> CDT <br /> N <br /> fO <br /> C1 <br /> 2 <br /> a Not to scale <br /> Schematic of Hydrostrat igraphic Units <br /> PROJECT NO. <br /> rib <br /> THE Interim Environmental Investigation Work Plan 89-01309.28 <br /> MARK Naval Communications Station (NAVCOMMSTA) Figure No. <br /> GROUP Stockton, California 1 1 <br /> ENGINEERS & GEOLOGISTS. INC. <br />