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ANALYTICAL METHODS <br /> Benzene — Xylene — Toluene/Volatile Hydrocarbons: (BTX) <br /> A methanol extraction is performed on the sample, which is then analyzed using <br /> the purge and trap technique. Quantitation is performed on a Gas Chromatograph <br /> equipped with a seven foot Carbopack B 60/80 mesh, 1% SP-1000 packed column, <br /> connected to a Photoionization Detector in series with a Flame Ionization <br /> detector. <br /> Positive results were confirmed on a Gas Chromatograph equipped with a six foot <br /> 1. 75% Bentone 34, 5% SP2100 100/200 mesh packed column, connected to a <br /> Photoionization Detector (PID), in series with a Flame Ionization Detector <br /> (FID). <br /> PCB's: (PCB) <br /> Sample extraction is performed according to EPA Method 3540, and analyzed <br /> according to EPA Method 8080 for PCB analysis. Quantitation is performed on a <br /> Gas Chromatograph equipped with an OV-1 packed column and an Electron Capture <br /> Detector (ECD). <br /> Diesel/Total Extractable Hydrocarbons: (DTEH) <br /> Samples are extracted with Methylene Chloride. Quantitation is performed on a <br /> Gas Chromatograph equipped with a 3% SP-2250 packed column to a Flame <br /> Ionization Detector (FID). All detectable peaks within a time period in which <br /> 95% of all recoverable hydrocarbons have eluted, are quanititated verses a #2 <br /> diesel standard. <br />