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TABLE 1 <br /> SAMPLE CONTAINERS, HOLDING TIMES & PRESERVATION <br /> PARAMETER MATRIX CONTAINER HOLDING TIME PRESERVATIONI <br /> Total Petroleum Soil 3"stainless steel or brass 14 days' 4°C <br /> Hydrocarbons cylinder 40 days' <br /> (Light Fractions) Water 40 ml glass vial, teflon- 14 days' 4°C HCI <br /> faced silicon septum 20 days2 to pH =2 <br /> (Heavy Fractions) Water 1 amber bottles, teflon 14 days' 4°C <br /> seat/silicon septum 40 days2 <br /> Benzene Soil 3" stainless steel or brass 14 days' 4°C <br /> Toluene cylinder <br /> Xylenes <br /> Ethylbenzene Water 40 ml glass vial.teflon 7 days' 4°C HCI <br /> seal/silicon 14 days' to pH = 2 <br /> Purgeable Soil 3" stainless steel or brass 14 days' 4°C <br /> Halocarbons cylinder <br /> Water 500 ml glass vial, teflon 14 days' 4°C <br /> seal/silicon septum <br /> Organic Soil 3" stainless steel or brass 14 days' 4°C <br /> Lead cylinder <br /> Water 40 ml glass vial, teflon 14 days' 4°C <br /> seal/silicon septum <br /> Ethylene Soil 3" stainless steel or brass 14 days2 4°C <br /> Dibromide cylinder <br /> Water 40 ml glass vial, teflon 14 days' 4°C <br /> faced silicon septum <br /> Polynuclear Soil 8 oz. wide mouth glass 14 days' 4°C <br /> Aromatic with teflon seal 40 days2 <br /> Hydrocarbons <br /> Water 1000 ml amber glass with 7 days' 4°C <br /> teflon seal 40 days2 <br /> Poly-Chlorinated Soil 8 oz. wide mouth glass 7 days' 4°C <br /> Biphenyls with teflon seal 40 days2 <br /> Water 1000 ml amber glass with 7 days' , 4°C <br /> teflon seal 40 days' <br /> Total Metals Soil 3" stainless steel, or brass 6 months <br /> cylinder <br /> Water 1000 ml plastic 6 months pH<2 <br /> Dissolved Metals Water 1000 ml plastic 6 months pH2, 0.45 Micron <br /> Filtration <br />