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The VOC emissions have never <br /> exceeded the 52 lb/day emission <br /> limit for the site. No evidence of Tetrachloroethylene (PCE) was <br /> found during examination of the chromatograms of the samples <br /> taken to the WEGE laboratory <br /> VAPOR SAMPLING <br /> COLLECTING LABORATORY SAMPLES <br /> Influent Sample <br /> The influent sample is obtained from a sample port located after <br /> the system vacuum pump before the REMOX Unit . Sterile poly tubing <br /> is then used to attach a 1 liter tedlar bag, fatted with a <br /> special septum "valve,, and tubing bib, to the sample port The <br /> sample port is on the pressure side of the pump and therefore the <br /> bag will fill without need of a pump Once the tedlar bag is <br /> filled, its valve is- closed and locked; the appropriate label is <br /> placed on the tedlar bag <br /> Effluent Sample <br /> A sample port for the effluent is located in the exhaust stack of <br /> the Remox system The flow pressure from the exhaust is great <br /> enough to fill a tedlar bag Sterile poly tubing is fitted to <br /> the exhaust port and the tedlar bag Then the sample: valve of <br /> the tedlar bag is opened and the bag is filled with the sample <br /> Once the tedlar bag is full, the valve is closed and locked, the <br /> sample port closed, and the appropriate label is placed on the <br /> bag <br /> The labels for both the influent and effluent tedlar bag samples <br /> show the date, time, sample ID# and analyses to be run <br /> Both the influent and effluent tedlar bag samples are then placed <br /> within a cooler, on ice, and are hand delivered to WEGE' s <br /> laboratory that same day <br /> The vapor sample is then infected into an FID (Flame Ionizing <br /> Detector) chromatograph and the resulting chromatogram compared <br /> to standard chromatograms of known TFH (Total Fuel Hydrocarbons, <br /> gasoline) and BTEX (benzene, toluene, ethylbenzene, and xylenes) <br /> concentrations A duel chromatograph comparison is also ran <br /> (Photovac 10550) to evaluate BTEX, TCE, PCE, and DCE <br /> ON SITE ANALYSIS <br /> Besides bag samples collected for the WEGE laboratory some <br /> samples may be run on site using a Photovac lOS50 PTD <br /> chromatograph <br /> page 3 of R603 , 03/21/94 <br />