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TABLE 1.1 <br /> FIRST SEMIANNUAL 2011 <br /> GROUNDWATER MONITORING AND ANALYTICAL DATA <br /> Former Unocal#0187 <br /> Chevron Site ID 306415 <br /> 437 East Miner Avene <br /> Stockton,California <br /> Sample TPH-DRO with Total <br /> Well ID Date TPH-ORO silica gel TPH-GRO Benzene Toluene Ethylbenzene Xylenes 1,2-DCA <br /> (pg/L) (pg/L) (pg/L) (pg/L) pg/L) (pg/!-) (pg/L) (pg/L) <br /> PNP-2-22 02118/11 110 <50 73 <0.5 <0.5 <0.5 <0.5 – <br /> 05/1Z71 140 86 44 <0.5 <0.5 <0.5 <0.5 <0.5 <br /> NP-2-60 05/12111 250 27 7 5 8 <0.5 <br /> l 4— <br /> 08/10/11 130 21 3 2 <br /> Notes: <br /> TPH-DRO Total petroleum hydrocarbons quantified as diesel range organics(C10-C28). <br /> TPH-GRO Total petroleum hydrocarbons quantified as gasoline range organics(C6-C72). <br /> 1,2-DCA 1,2-Dicholorethane. <br /> pg/L Microgram per liter. <br /> <0.5 Not detected at or above the laboratory method detection limit shown. <br /> – Not available or not applicable. <br /> G1Aproject\ENV\CHEVRON1306415aiser62 Communip ion\Conespondence\Conespondence Client\Summary\Tables 1 1 through 1 5xlsz 2 of 2 <br />