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r rrr rr 1>rr r r rr r r r r r r r it r r■ r r <br /> • Graph 5 - Concentra y tions of Hydrocarbons incl NP-1-111 during C-Sparge System Operation • <br /> Former Unocal Service Station No. 0187 437 East Miner Ave. <br /> Stockton, CA <br /> 30 <br /> 2,000 <br /> 1,800 <br /> 25 <br /> 1,600 <br /> 1,400 20 <br /> a <br /> 1,200 a <br /> a <br /> CL 15 'Co <br /> C, 1,000 N <br /> 800 <br /> 10 <br /> 600 <br /> Baseline Began Microsparge <br /> 400 5 <br /> Additional Sparge Points Installed <br /> 200 <br /> Popov 0 <br /> 0 <br /> Sampling date <br /> T 7PHg (in ppb) benzene (in ppb) <br />