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Page 1 of 1 <br /> TABLE 2 <br /> SUMMARY OF ANALYTICAL METHODS,HOLDING TIME PERIODS,AND PRESERVATIVES <br /> QUARTERLY GROUNDWATER MONITORING <br /> SHELL OIL <br /> SHELL CORDES RANCH <br /> TRACY,CALIFORNIA <br /> JULY 2013 <br /> Parameter Method' Matrix Holding Tinne Pmseroation <br /> VOC-BTEX SW-846 8260B Water 14 days from sample preservation to completion of analysis Iced,4 t 2°C <br /> TPH Crude Oil C6-C44/SGC SW-846 8015 Water 7 days from sample collection to extraction Iced,4 t 2°C <br /> 40 days from extraction to completion of analysis <br /> Notes: <br /> SW-846 "Test Methods for Evaluating Solid Waste,Physical/Chemical Methods",SW-846,3rd Edition,and Promulgated updates,November 1986 <br /> BTEX Benzene,toluene,ethylbenzene,xylenes. <br /> TPH Total petroleum hydrocarbons. <br /> VOC Volatile organic compound. <br /> a <br /> CRA O6V2].9Mvno-13-lbts <br /> r <br />