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+ • TABLE 1 0 <br /> SAMPLE CONTAINERS, HOLDING TIMES <br /> AND PRESERVATION <br /> PARAMETER MATRIX CONTAINER HOLDING TIME PRESERVATION <br /> TPH Soil 3" stainless steel or brass 14 days' 40C <br /> cylinder 40 days <br /> (Light Fractions) Water 40 ml glass vial, teflon- 14 days' 40C HCI to pH <2 <br /> faced silicon septum 20 days' <br /> (Heavy Fractions) Water 1 L amber bottles, teflon 7 days' 40C <br /> seal/silicon septum 40 days' <br /> BTEX Soil 3" stainless steel or brass 14 days' 40C <br /> cylinder <br /> Water 2-40 ml glass vial, teflon 14 days' 40C HCI to pH <2 <br /> seal/silicon 40 days' <br /> Purgeable Halocarbons Soil 3" stainless steel or brass 14 days' 40C <br /> cylinder <br /> Water 2-40 ml glass vial, teflon 14 days' 40C <br /> seal/silicon septum <br /> Organic Lead Soil 3" stainless steel or brass 14 days' 40C <br /> cylinder <br /> Water 2-40 ml glass vial, teflon 14 days' 40C <br /> seal/silicon septum <br /> Ethylene Dibromide Soil 3" stainless steel or brass 14 days' 40C <br /> cylinder <br /> Water 2-40 ml glass vial, teflon 14 days' 40C <br /> seal/silicon septum <br /> Polynuclear Aromatic Soil 8 oz. wide mouth glass 14 days' 40C <br /> Hydrocarbons with teflon seal 40 days' <br /> Water 1000 ml amber glass with 7 days' 40C <br /> teflon seal 40 days' <br /> Polychlorinated Soil 8 oz. wide mouth glass 7 days' 40C <br /> Biphenyls with teflon seal 40 days <br /> Water 1000 ml amber glass with 7 days' 40C <br /> teflon seal 40 days <br /> Total Metals Soil 3" stainless steel or brass 6 months 40C <br /> cylinder <br /> Water 1000 ml plastic 6 months 40C, HNO3 to pH<2 <br /> Dissolved Metals Water 1000 ml plastic 6 months 40C, HNO3 to pH<2, <br /> 0.45 Micron Filtration <br /> Pesticides Soil 3" stainless steel or brass 14 days' 40C <br /> cylinder <br /> Water 1 L glass 7 days' 40C <br /> ' = Maximum holding time for sample (extract within this time or analyze if extraction is not required. <br /> ' = Maximum holding time for extract (analyze within this time). <br /> 3 = Maximum holding time for sample when pH adjusted with HCl. <br /> m:\...\W:\Admin\She I I s\QAQC-98.DOC <br />