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i <br /> GROUND ZERO ANALYSIS, INC. Quality Control/Quality Assurance Plan <br /> TABLE 1 <br /> SAMPLE CONTAINERS HOLDING TIMES & PRESERVATION <br /> PARAMETER MATRIX CONTAINER HOLDING TIME PRESERVATION <br /> Total Petroleum Soil 3" stainless steel or brass cylinder 14 days' 4°C <br /> Hydrocarbons 40 days2 <br /> (Light Fractions) Water 40 ml glass vial, Teflon-faced silicon septum 14 days' 4°C HCI to pH= 2 <br /> 20 days2 <br /> (Heavy Fractions) Water 1 amber bottles,Teflon seat/silicon septum 14 days' 4°C <br /> 40 days2 <br /> Benzene Soil 3" stainless steel or brass cylinder 14 days' 4°C <br /> Toluene <br /> Xylenes Water 40 ml glass vial. Teflon seal/silicon 7 days' 40C HCI to pH= 2 <br /> Ethylbenzene 14 days3 <br /> Purgeable Soil 3" stainless steel or brass cylinder 14 days' 40C <br /> Halocarbons <br /> Water 500 ml glass vial,Teflon seallsilicon septum 14 days' 4°C <br /> Organic Soil 3" stainless steel or brass cylinder 14 days' 40C <br /> Lead <br /> Water 40 ml glass vial,Teflon seal/silicon septum 14 days' 4°C <br /> Ethylene Soil 3" stainless steel or brass cylinder 14 days2 4,C <br /> Dibromide <br /> 40 ml glass vial, Teflon faced silicon septum <br /> Water 14 days' 4°C <br /> Polynuclear Soil 8 oz.wide mouth glass with Teflon seal 14 days' 4,C <br /> Aromatic 40 days2 <br /> Hydrocarbons Water 1000 ml amber glass with Teflon seal 7 days' 4,C <br /> 40 days2 <br /> Poly-Chlorinated Soil 8 oz.wide mouth glass with Teflon seal 7 days' 4,C <br /> Biphenyls 40 days2 <br /> Water 1000 ml amber glass with Teflon seal 7 days' 4,C <br /> 40 days2 <br /> Total Metals Soil 3" stainless steel, or brass cylinder 6 months <br /> Water 1000 ml plastic 6 months PH< 2 <br /> Dissolved Metals Water 1000 ml plastic 6 months pH2, 0.45 Micron Filtration <br /> Pesticides Soil 3" stainless steel, or brass cylinder 14 days2 4°C <br /> Water 1000 ml glass 7 days2 4°C <br /> NOTES: <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 HCI. <br />