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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 <br /> enough to fill a tedlar bag, e Poly is great <br /> Sterily tubing is fitted to the <br /> exhaust port and the tedlar bag. Then the sample valve of the <br /> tedlar bag is opened and the bag is filled with the sample. Once <br /> the tedlar bag is full, the valve is closed and locked, the sample <br /> Port closed, and the appropriate label is placed on the 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 laboratory <br /> that same day. <br /> The vapor sample is then injected into an FID (Flame Ionizing <br /> Detector) chromatograph and the resulting chromatogram compared to <br /> 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 1OS50) to evaluate BTEX, TCE, PCE, and DCE. <br /> ON SITE ANALYSIS <br /> . Besides bag samples collected for the WEGE laboratory some samples <br /> may be run on site using a Photovac 10550 PID chromatograph. <br /> The influent and effluent samples are collected from the same ports <br /> as the bag samples but 50 cc syringes are used to collect the sample <br /> and 0 5 cc of the vapor sample are then injected directly into the <br /> PTD chromatograph. The resulting chromatogram is then compared to a <br /> standard run on the same chromatograph prior to the sample run. <br /> During the initial month of operation, three effluent samples were <br /> obtained during the day and analyzed using the 1OS50 chromatograph <br /> The highest value is used to calculate the VOC <br /> produced Presentl poundage per day <br /> obtained upon arrivalftoathe�site . Ad�ustmentsand an eareuthen madelto the <br /> vapor extraction system- removal of liquids from the condensation <br /> traps; closing the air dilute valve to maximize vapor removal, <br /> without causing the REMOX Unit to shut down due to high temperature <br /> shut off (greater than 15500F) , and closing the pump bypass to <br /> create maximum flow and vacuum from the wells . Once, these <br /> ad3ustments have been completed and the system has stabilized, <br /> influent and effluent samples are again obtained, along with samples <br /> from the individual extraction orifices (wells) . The site is then <br /> secured until the next visit . <br /> page 3 of R503 , 09/14/93 <br />