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5 015 <br /> Table 1 <br /> Groundwater Elevation and Ana"cat Data <br /> ARCO Service Station#595 <br /> 6100 N Highway 99 Stockton CA <br /> Well Depth Groundwater Groundwater Ethyl Xylenes MtBE MtBE <br /> Well Date Elevation to Water Elavabon Elevation TPHg Benzene Toluene benzene (total) (EPA 8020) (EPA 8260) DO <br /> Number Sampled (ft MSL) (ft,TOC) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> 0CT8 10~1!2003 — — — — <50 <0.50 <0 50 <0 50 <0 50 — <0 50 — <br /> Notes <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl tort butyl ether =not measured or analyzed <br /> DO=Dissolved oxygen <=below given laboratory detection limit <br /> EPA 8020=analyzed using EPA Method 8020 PINP=purged/not purged <br /> EPA 8260=analyzed using EPA Method 6260 mgA.=milligrams per liter <br /> It=feet ppb=pails per b0ion <br /> MSL=mean sea level TB 1=Trip Blank <br /> TOC=top of castrg WSW=Water supply welt <br /> =Hydrocarbon pattern is present in the requested fuel quantdation range but does not resemble the pattern of requested fuel <br /> (a)=Chromatogram Pattern Gasoline C6 C 10 <br /> (b)=This sample was analyzed beyond the E°A recommended holding time The results may still be useful for their intended purpose <br /> (c)=Discrete peak 0 06 C7 <br /> (d)=Laboratory reports sample with a possible high bias due to the contlnurng calibration verification falling outside acceptance cntena <br /> I <br /> i <br /> I IProfectslARGOW51ReportslTables44O03gwtabtes595 As <br />