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Quality Assurance/Quality Control Plan Page 14 <br /> TABLE 1 <br /> SAMPLE CONTAINERS, HOLDING TIMES & PRESERVATION <br /> PARAMETER MATRIX CONTAINER*:,:,:.,' A16LDING TIME ;PRESERVATION <br /> Total Petroleum Soil 3" stainless steel 14 days'/ <br /> Hydrocarbons or brass cylinder 40 days2/ 4°C <br /> 40 ml glass vial, 14 days'/ 4°C HCI <br /> (Light Fractions) Water teflon-faced silicon <br /> septum 20 days2/ to pH = 2 <br /> 1 amber bottles, 14 days '/ <br /> (Heavy Fractions) Water teflon seal/silicon 40 days2/ 40C <br /> septum <br /> Benzene Soil 3" stainless steel 14 days'/ 4°C <br /> Toluene or brass cylinder <br /> Xylenes 40 ml glass vial, 7 days'/ 4°C HCl <br /> Ethylbenzene Water <br /> teflon seal/silicon 14 days3/ to pH = 2 <br /> Soil 3" stainless steel 14 days'/ 4°C <br /> Purgeable or brass cylinder <br /> Halocarbons 500 ml glass vial, <br /> Water teflon seal/silicon 14 days'/ 4°C <br /> septum <br /> Soil 3" stainless steel 14 days'/ 4°C <br /> Organic or brass cylinder <br /> Lead 40 ml glass vial, <br /> Water teflon seal/silicon 14 days'/ 4°C <br /> septum <br /> Soil 3" stainless steel 14 days2/ <br /> Ethylene 4°C <br /> or brass cylinder <br /> Dibromide 40 ml glass vial, <br /> Water teflon faced silicon 14 days'/ 4°C <br /> septum <br /> 8 oz. wide mouth 14 days'/ <br /> Soil <br /> Polynuclear glass with teflon 40 days2/ 4°C <br /> seal <br /> Aromatic <br /> Hydrocarbons 1000 ml amber <br /> Water glass with teflon 7 days'/ 4°C <br /> seal 40 day S2/ <br />