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� <br /> 1 BUILDING SB-3 <br /> 87.1' (87.04) , <br /> " FORMER USED <br /> 01L TANK � <br /> � t[ <br /> 87.2' <br /> STATION <br /> BUILDING <br /> -- A <br /> (87 33) <br /> PUMP U/G <br /> ISLANDS TANKS --� <br /> I Q <br /> t J <br /> 11 TH ST. <br /> ' LEGEND <br /> MONITORING WELL <br /> ' SOIL BORING <br /> { ) POTENTIOMETRIC SURFACE ELEVATION (FEET) <br /> (RELATIVE TO ARBITRARY DATUM) <br /> ' —--� POTENTIOMETRIC SURFACE CONTDUR <br /> ESTIMATED GROUNDWATER FLOW <br /> —T DIRECTION AND GRADIENT 0 FEET 30 <br /> ' SCALE <br /> Li`--j® GROUNDWATER 4057 PORT CHICAGO HW POTENTIOMETRIC SURFACE MAP <br /> 1:100TECHNOLOGY CONCORD, CA 94520 (12/14/92) <br /> (stD) 671--2387 <br /> CLIENT LOCATION REV NO I DATE <br /> CHEVRON U.S.A. PRODUCTS CO. 103 1 1 th STREET 0 1/5/93 <br /> SERVICE STATION No. 9-0959 TRACY. CALIFORNIA <br /> PM PE/RG DESIGNED DETAILED ACAD nLE PROJECT NO FIGURE <br /> JF ML PSM01 492/SP1 93 023202673 3 <br /> 1 <br />