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Graph 3 - Concentrations of Hydrocarbons in ell NP-1-22 during C-S ar e System Operation <br /> Former Unocal Service Station No. 0187 437 East Miner Ave. <br /> Stockton, CA <br /> F <br /> i <br /> 30,000 1,400 <br /> I <br /> ff <br /> 25,000 1,200 <br /> 1,000 <br /> 20,000 <br /> 800 Q' <br /> CL <br /> CL <br /> CD15,000 <br /> _ Additional Sparge Points Installed 600 c <br /> 10,000 <br /> 400 <br /> i <br /> 5,000 200 <br /> Began Microsparge <br /> M <br /> 0 0 <br /> Ob O O O ^� 3 "� 3 °'s <br /> ��o °1�0 �o ��o ,��o ,��o �o,��o �o opo o�� o�c ` <br /> �0��►.0��30��.ory rry��ry,���.00�yo�ti���ti �`ry dry `oy��,,��41� ►. <br /> F Sampling date <br /> I <br /> - -TPHg (in ppb) —0 benzene (in ppb) <br />