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i • • <br /> TABLE 4 <br /> GROUNDWATER TREATMENT SYSTEM DATA <br /> Thrifty Oil Station# 172, Stockton, CA ; <br /> Discharge Average I N L E T (4L)) OUTLET fL) <br /> DATE Totalizer Discharge COMMENTS <br /> Reading Flog TPHg $ T E % MTBE TPHg B T X MTBE <br /> (gallons) (gaUday) <br /> 211!02 78,932 0 - - - - - - - - GW system shut down <br /> 216102 78932 0 37,700 5,120 5,000 103 2,860 1,360 <50 2 1 <018 1 <024 After sampling shut down again <br /> 3128102 78,932 0 - - - - - - - - - - - System still off carbon changeout <br /> NOTE Total Petroleum Hydrocarbons(TPH)analyzed by EPA Method 8015 modified for gasoline <br /> BTEX and MTBE analyzed by EPA Method 8021 B <br /> 172TAB5 GW System Page 2 of 2 4122102 <br />