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