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GROUND ZERO ANALYSIS,INC. Quality Control/Quality Assurance Plan <br /> TABLE 1 <br /> SAMPLE CONTAINERS, HOLDING TIMES&PRESERVATION SOIL AND GROUNDWATER <br /> PARAMETER MATRIX CONTAINER HOLDING TIME PRESERVATION <br /> Total Petroleum Soil Stainless steel or brass cylinder 14 days' 4°C <br /> Hydrocarbons EnCore Sampler for Gasoline Range 40 days' <br /> (Light Fractions) Water 40 ml glass vial,Teflon-faced silicon septum 14 days' 4°C HCI to pH=2 <br /> 20 days' <br /> (Heavy Fractions) Water 1 liter amber bottles,Teflon seat/silicon 14 days' 4°C <br /> septum 40 days' <br /> Benzene Soil EnCore Sampler 14 days' 4°C <br /> Toluene <br /> Xylenes Water 40 ml glass vial.Teflon seal/silicon 7 days' 4°C HCI to pH=2 <br /> Ethylbenzene 14 days' <br /> Volatile Organic Soil EnCore Sampler 14 days' 4°C <br /> Compounds <br /> Water 500 ml glass vial,Teflon seal/silicon septum 14 days' 4°C <br /> Organic Soil Stainless steel or brass cylinder 14 days' 4°C <br /> Lead <br /> Water 40 ml glass vial,Teflon seal/silicon septum 14 days' 4°C <br /> Ethylene Soil EnCore Sampler 14 days' 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 or 14 days' 4°C <br /> Aromatic stainless steel or brass cylinder 40 days' <br /> Hydrocarbons Water 7 days' 4°C <br /> 1000 ml amber glass with Teflon seal 40 days' <br /> Poly-Chlorinated Soil 8 oz.wide mouth glass with Teflon seal or 7 days' 4°C <br /> Biphenyls stainless steel or brass cylinder 40 days' <br /> Water 7 days' 4°C <br /> 1000 ml amber glass with Teflon seal 40 days' <br /> Total Metals Soil 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 Stainless steel,or brass cylinder 14 days' 4°C <br /> Water 1 1000 ml glass 7 days' 4°C <br /> NOTES: <br /> = Maximum holding time for sample(extract within this time or analyze if extraction is not required). <br /> z = Maximum holding time for extract(analyze within this time). <br /> 3 = Maximum holding time for sample when pH adjusted with HCI. <br />