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S <br /> Brick Retaining Wall S 6� <br /> ATR-212.9 <br /> 1 IR-1121 85.58 <br /> 85.73 <br /> :i <br /> 1-ormer Waste <br /> (`►i1 Tank j Pump islands �`c <br /> Location � <br /> ARCO 199 <br /> STATION 2093 1 ' <br /> 4' <br /> t r� t Culp ATR-7/6' A <br /> 85.65 <br /> Vapor � <br /> Lines <br /> G85.79 <br /> -3!10(X) <br /> -; Product`Lines t <br /> '1-Underground <br /> T Storage ranks > <br /> ATR-5/1220 of Fuel <br /> x5;85 <br /> ATR-6/19 <br /> 5.67 <br /> ATR-4/150 <br /> 85.77 <br /> 17 � <br /> .-...--. --. 0 <br /> Clover <br /> Road <br /> Scale: 4"=20' <br /> Contour interval: 0.05 feet 0 10 20 30 1 <br /> ,s5.1()--- Contour Line <br /> ATR-2/2.9 Well Number/Benzene Concentration {p'pb) <br /> 85.58 Groundwater Elevation (feet) Relative to NORTH <br /> Arbitrary 100' Benchmark On-site <br /> Figure I Site Map Showing Monitoring Well Locations, Groundwater <br /> Elevation Contours, and Benzene Concentrations, <br /> ARCO Station 2093, Tracy, California, April 18, 1990 <br /> l <br />