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2, - Concentrations o€H � - ar e Hydrocarbons i tell U-10 during CS System Operation 0 <br /> Graph y p g y P <br />:i <br /> Former Unocal Service Station No. 0187 437 East Miner Ave. <br /> Stockton, CA <br /> 800 70.00 <br /> Baseline <br /> 70D 80.00 <br /> 800 <br /> 50.00 <br /> Began Microsparge <br /> 500 -- <br /> 40.00 Q <br /> CL <br /> a <br /> CM aoo <br /> IL <br /> Additional Sparge Points Installed <br /> 30.00 m <br /> 300 -- A <br /> 20.00 I� <br /> -- VA <br /> 200 <br /> 10.00 <br /> 100 <br /> E <br /> d <br /> 0 0.00 <br /> 0 <br /> o� O ry0ry�0 '�b` '"� <oryhO^ �* '°� '`'1� ryry o " O� V* e0 <br /> ry� 00N� ry� N� N� N tiONaN� NO *O �OeY°� *� ►.°� ry <br /> h Z h Qs o� \0 0 0 � � ^ <br /> Sampling date <br /> TPHg (in ppb) +benzene (in ppb) <br />