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1 <br /> ANALYTICAL METHODOLOGY <br /> ' Total Petroleum Y Hydrocarbons b Purge & Trap and GC-FID <br /> Y <br /> ' WATER - DHS Method - Luft Field Manual <br /> ' A 5 ml sample volume, or 5 ml of a suitable dilution, is purged on a suitable purge <br /> and trap system with helium The purged sample is analyzed on a Gas Chromatograph <br /> ' equipped with a Flame Ionization Detector (FID) A packed column is used to <br /> separate the compounds <br /> 1 <br /> SOIL - DHS Method - Luft Field Manual <br /> ' A 10 gram, or other appropriate aliquot of soil, is weighed into a clean VOA vial <br /> Soils received in brass core tubes are sampled by discarding 2-5 centimeters of soil <br /> from each end of the tubes (this is done to reduce the possibility of analyzing a portion <br /> of soil that has been exposed to sampling technique contamination) Equal aliquots of <br /> soil are then removed from each end of the tube and combined in the VOA vial Soil <br /> ' in jars or bags is aliquoted using a similar technique, which discards exposed sample <br /> surfaces A 10 ml, or other appropriate volume of methanol, is added to the soil and <br /> the soil is shaken with the solvent 100 ul of the extract, or a reduced aliquot or <br /> ' volume of a suitable dilution, is injected into 5 ml of laboratory blank water and <br /> analyzed by the same technique used for water samples <br /> 1 <br /> 1 <br /> 1 <br /> IPIC--SNA JES-E-f` --v'SIC . <br />