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• � Page 3of3 = <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Fortner ARCO Service Station#4493 <br /> 205 N Center St,Stockton,CA <br /> Ethyl- Ethyl- Xylenes Xylenes <br /> Well Depth Groundwater Groundwater Benzene Benzene Toluene Toluene benzene benzene (total) (total) MtBE MtBE <br /> well Date Elevation to Water Elevation Elevation TPHg (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (8020) (8260) DO <br /> Number Sampled ft,MSL) (ft,TOC) ft,MSL) Change ft (ppb) DHS LU 8260 DHS LU 8260) (DHS LU (8260) (DHS LU (8260) (ppb) (ppb) mg/l <br /> Notes <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MTBE=Methyl tert butyl ether <br /> DO=Dissolved oxygen <br /> ft=feet <br /> MSL=mean sea level <br /> TOC=tap of casing <br /> ppb=parts per billion <br /> m g(L=milligrams per liter <br /> PMP=purged/not purged <br /> 8260=analyzed using EPA Method 8260 <br /> <or ND=below given laboratory detection limit <br /> 8020=Analyzed by EPA Method 8020 <br /> DHS LUFT=Analyzed by Department of Health Services Leaky Underground Fuel Tank Method <br /> NS=Not Surveyed <br /> =not measured/analyzed or not applicable <br /> '=Sample was reanalyzed past the EPA recommended holding bme <br /> `=Hydrocarbon pattern is present in the requested fuel quantification range but does not resemble the pattern of the requested fuel <br /> =The surrogate recovery for this sample cannot be accurately quantified due to Interference form coelutmg organic compoundsresent in the <br /> p sample extract <br /> 1 <br /> Prolects/ARCO/4493/ReportsrTabieslgwtables4493 xls <br />