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GROUND ZERO ANALYSIS, LNC. 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 daysZ <br /> (Light Fractions) Water 40 ml glass vial,Teflon-faced silicon septum 14 days' 4'C HCI to pH =2 <br /> 20 daysZ <br /> (Heavy Fractions) Water 1 amber bottles,Teflon seat/silicon septum 14 days' 4'C <br /> 40 days' <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' 4'C HCI to pH = 2 <br /> Ethylbenzene 14 days' <br /> Purgeable Soil 3" stainless steel or brass cylinder 14 days' 4'C <br /> Halocarbons <br /> Water 500 ml glass vial,Teflon seal/silicon septum 14 days' 4'C <br /> Organic Soil 3" 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 3"stainless steel or brass cylinder 14 daysZ 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 daysZ <br /> Hydrocarbons Water 1000 ml amber glass with Teflon seal 7 days' 4°C <br /> 40 days' <br /> Poly-Chlorinated Soil 8 oz. wide mouth glass with Teflon seal 7 days' 4°C <br /> Biphenyls 40 daysZ <br /> ' Water 1000 ml amber glass with Teflon seal 7 days' 4'C <br /> 40 daysZ <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 daysZ 4'C <br /> Water 1000 ml glass 7 daysZ 4'C <br /> N07ES: <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 />