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TABLE 2 - SUMMARY OF RESULTS OF GROUNDWATER SAMPLING <br /> PACIFIC GAS AND ELECTRIC COMPANY <br /> McDONALD ISLAND COMPRESSOR STATION <br /> SAN JOAQUIN COUNTY, CALIFORNIA <br /> ALISTO PROJECT NO. 10-211-15 <br /> SAMPLE DATE OF TPH-G TPH-K TPH-D TPH-MO B T E X LAB <br /> ID SAMPLING (ug/1) (ug/1) (ug/1) (ug/1) (ug/1) (ug/1) (ug/I) (ug/1) <br /> SB-7 6/28/2002 ND<50 ND<5.0 ND<5.0 ND<20 ND<0.5 0.6 ND<0.5 1.2 Argon <br /> SB-8 6/28/2002 ND<50 ND<5.0 ND<5.0 ND<20 ND<0.5 ND<0.5 ND<0.5 ND<1.0 Argon <br /> SB-9 6/28/2002 ND<50 ND<50 ND<500 ND<20 ND<0.5 ND<0.5 ND<0.5 ND<1.0 Argon <br /> SB-10 6/28/2002 ND<50 ND<50 ND<500 ND<20 ND<0.5 ND<0.5 ND<0.5 ND<1.0 Argon <br /> SB-11 6/28/2002 ND<50 ND<50 ND<500 ND<20 ND<0.5 ND<0.5 ND<0.5 ND<1.0 Argon <br /> SB-12 6/28/2002 ND<50 ND<50 ND<500 ND<20 ND<0.5 4.5 ND<0.5 2.0 Argon <br /> SB-13 6/28/2002 ND<50 ND<50 ND<500 ND<20 ND<0.5 0.7 1.2 ND<1.0 Argon <br /> MCL --- --- --- --- --- 1.0 150 700 1750 <br /> ABBREVIATIONS: <br /> TPH-G Total petroleum hydrocarbons as gasoline (C6 to C12) <br /> TPH-K Total petroleum hydrocarbons as kerosene (C8 to C13) <br /> TPH-D Total petroleum hydrocarbons as diesel (C10 to C20) <br /> TPH-MO Total petroleum hydrocarbons as motor oil (C20 to C42) <br /> B Benzene <br /> T Toluene <br /> E Ethylbenzene <br /> X Total xylenes <br /> MCL Maximum Contaminant Level for drinking water(California Department of Health Services) <br /> ug/I Micrograms per liter <br /> --- Not applicable/available <br /> Argon Argon Laboratories <br /> f:\02\10-211\211-15\GW.xls Pagel <br />