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CENTRAL AVENUE EXPLANATION <br /> + Groundwater monitoring well <br /> 99 99 Groundwater elevation in feet <br /> - - -- -- -- referenced to Dean Sea Level <br /> 1 38 93 U (MSL) <br /> Former <br /> UndergroundI j former 9�fig' Groundwater elevation contour, <br /> I Storage Tanks Underground dashed where inferred <br /> Storage Tanks <br /> IU•4 <br /> I t I <br /> Concrete ( U, I ;38 91 <br /> 1 Island 7 <br /> I o I <br /> 9I I Canopy <br /> C' <br /> Station, 138 81 W Approximate Iromid rani <br /> C' StationForm\v W flow direct+or, at a <br /> 0 1 / I Building <br /> 1 *I H gradient of o 004 ft/fl <br /> U-3 0 <br /> 1 —� *3916 % <br /> Former V0I <br /> I V0 <br /> I <br /> Waste Oil <br /> I Tank � I <br /> I Former <br /> Dispenser <br /> I Island <br /> I <br /> 1 Z <br /> I Asphalt <br /> I Patch I E <br /> � Q ?o <br /> L — — _ — — _ — Approximate Property Boundary — _.. _ <br /> Source Figure Moddied From Drvouig Provided Scole Irl Feet <br /> By NPOS Services Inc <br /> POTENTIOMETRIC MAP FIGURE <br /> 99 Oe War - Ryan Inc. Former Unocal Service Station No 0123 <br /> 8747 sierra Cl, Suite J (925) 551-7555 1034 Central Avenue <br /> Dubin CA 94586 Trac , California <br /> JOB NUMBER REVIEWED BY DATE REVISED DATE <br /> 280047 Se tem r 2$ 1998 <br />