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Figure 2 <br /> Sod Vapor Extraction System Hydrocarbon Concentrations <br /> Unocal Service Station 2859 <br /> 4665 Pacific Avenue <br /> Stockton,California <br /> 3,000 120 <br /> I <br /> 2,500 100 <br /> N <br /> N <br /> d <br /> 2,000 80 <br /> ac <br /> E <br /> � Y m <br /> 0 1,500 ---- - — �- 60 m <br /> N <br /> ca y c <br /> i ♦9Y J v > m <br /> a. fi <br /> r <br /> 1,00o <br /> i <br /> � } Y <br /> 500 — — --{ - 20 <br /> — < <br /> c r <br /> L <br /> t t Y <br /> a v <br /> } <br /> 0 <br /> ' 00 <br /> 1196 2196 3196 4196 5196 6196 7196 7196 8/96 9196 <br /> Hours of Operation <br /> ©TPPH as Gasoline ®Benzene <br /> 31D04D5A13Q96QPR XLSIFIGI A-5 November 8 1996 <br />