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*E1 , <br /> WELL CONCENTRATIONS <br /> Shell Oil Products Company <br /> 6131 Pacific Avenue <br /> Stockton,California <br /> WIC#204-7525-0104 <br /> Measured Corrected Total Total Fecal <br /> Sample GW Depth GW Elev SP TPPH B T E X MTBE Lead CoAform Coliform Methanol dO dO Comments <br /> Date (MPN/ (MPN/ <br /> (ft) (ft) (ft) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) 100ml) 100ml) (ug/L) (mg/L) Method <br /> TPPH=Total Purgeable Petroleum Hydrocarbons carbon range C6 to C12 by EPA Method 8015(Modified) <br /> (previously reported as Total Petroleum Hydrocarbons as Gasoline) <br /> BTEX=benzene toluene ethylbenzene,xylenes by EPA Method 8020 <br /> MTBE=methyl-tertiary-butyl ether by EPA Method 8020 <br /> Oxygenates= tertiary-butanol(TBA),methyl tertiary-butyl ether(MTBE),di isopropyl ether(DIPE) ethyl tertiary-butyl ether(ETRE), <br /> and tertiary-amyl methyl ether(TAME)by EPA Method 8260 <br /> Notes <br /> '=Positnre response for petroleum hydrocarbons as gasoline,is due to the presence of an unknown hydrocarbon,not gasoline <br /> =Separate Phase hydrocarbon skimmer in well Measurements collected after skimmer removal <br /> Dissolved Oxygen readings given prior to well purging <br /> 240-0854 6 <br />