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CAMBRIA _ <br /> Table 1 Groundwater Extraction System Analytical Results,Shell-branded SerVkCe Station 2575 Country Club Boulevard Stockton,California <br /> Abbreviations&Notes <br /> TPHg=Total purgeable hydrocarbons as gasoline <br /> MTBE=Methyl tert butyl ether <br /> Cone =Concentration <br /> ppb=pans per billion equivalent to ggA <br /> TPHg benzene and MTBE analyzed by EPA Method 8260 <br /> TPH(hexane extractable=oil and grease)analyzed by EPA Method 1664 <br /> PH analyzed by EPA Method 150 1 <br /> Discharge Limits TPH=100 mg/L benzene=0 5 mg/L MTBE=0 5µg1L pH=5 0<x<10 0 <br /> NS=Not sampled <br /> NA=Not analyzed <br /> 'TPH and pH were sampled on 2125/03 not 2121/03 <br /> Page 2 of 2 <br /> 0783 <br />