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CAMBRIA <br /> Table 1 Groundwater Extraction System Analytical Results,Shell branded Service Station 2575 Country Club Boulevard Stockton Cabfortua <br /> Influent Midnuenl t Mtdfluent 2 Mldfluent 3 EMueni <br /> Sample TPHg Benzene MTBE TPHg Benzene MTBE TPHg Benzene MTBE TPHg Benzene MTBE TPHg Benzene MTBE TPH PH <br /> Date Cone Cone Cone Cone Cone Cone Conc Conc Cone Colic Cone Cone Cone Cone Conc Colic <br /> (mrnldd ) ( b) (ppb) (ppb) ( b) ( b) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb). ( b) (ppb) (ppb) ( b) <br /> 09rM13 17,000 2,500 10,000 x2,500 <25 3,100 4,300 <13 31 <250 <1$ 33 <50 <0 50 <0 50 NS 7 0 <br /> Abbreviations&Nates <br /> i <br /> TPHg=Total purgeable hydrocarbons as gasolnna <br /> MTBE=Methyl telt butyl ether <br /> Conc-Concentration <br /> ppb=Pans per bkWN equivalent to ygA <br /> TPHg benzene,and MTBE analyzed by EPA Method 8260 <br /> i <br /> TPH(hexane extractable a oil and grease)analyzed by EPA Method 1664 <br /> PH analyzed by EPA Method 150 1 <br /> Discharge Lirrats TM=100 mg/l.benzene=0 5 ing/l,MTBE-0 5µg/L,PH=5 0<x<10 0 <br /> I <br /> NS=Not sainpied <br /> NA w Not analyzed <br /> N/A=Not appbeable <br /> TPH and PH wme munpled on 2M 03 net 2121103 <br /> The sample collected on 7)10103 was a confirimuon scoop a after the addition of the fourth carbon vessel. The effluent was captured in th transfer lank <br /> STL San Frmtnsco analyzed the pH sample collected on 9110!03 out of hold time <br /> Page 2 of 2 <br /> 0783 <br />