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AQUEOUS SAMPLE ANALYTICAL METHODS, CONTAINERS and HOLDING TIMES <br /> Parameter Analytical Method Container Holding Time <br /> TPH (gasoline) EPA Modified 8015 40 ml. vial, 14 days <br /> cool 4 C., pH <2-HCI <br /> BTEX EPA 8020 40 ml. vial, 14 days <br /> cool 4 C., pH <2-HCI <br /> i <br /> TPH (diesel) EPA Modified 8015 1 liter amber 14/40 days ;. <br /> cool 4 C. <br /> Non-polar SM 503E (5520F) 1 liter amber 28 days <br /> oil & grease cool 4 C., pH <2-HCI <br /> Total oil & SM 503A (552013) 1 liter amber 28 days <br /> grease cool 4 C., pH <2-HCI <br /> TRPH EPA 418.1 1 liter amber 28 days <br /> (Non-polar) cool 4 C., pH <2-HCI <br /> Halogenated EPA 8010 40 ml. vial, 14 days <br /> Vol. Organics cool 4 C. <br />' Volatile EPA 8240 40 ml. vial, 14 days <br /> Organics cool 4 C., pH <2-HCI <br /> Semi-volatile EPA 8270 1 liter amber 7/40 days <br /> Organics cool 4 C. <br /> Pesticide/PCB EPA 8080 1 liter amber 7/40 days <br /> cool 4 C. <br /> Holding times are listed as days to complete extraction/days to complete analysis. <br />