ARCHIVED REPORTS XR0006539 - Laserfiche WebLink

Home Browse Search

. VAPOR SAMPLING COLLECTING LABORATORY SAMPLES Influent Sample The influent sample is obtained from a sample port located after the system vacuum pump before the REMOX Unit . Sterile poly tubing is then used to attach a 1 later tedlar bag, fitted with a special septum "valve" and tubing bib, to the sample port The sample port is on the pressure side of the pump and therefore the bag will fill without need of a pump Once the tedlar bag is filled, its valve is closed and locked, the appropriate label as placed on the tedlar bag Effluent Sample A sample port for the effluent is located in the exhaust stack of the Remox system The flow pressure from the exhaust as great enough to fail a tedlar bag Sterile poly tubing is fitted to the exhaust port and the tedlar bag Then the sample valve of the tedlar bag as opened and the bag is filled with the sample Once the tedlar bag as full, the valve as closed and locked, the sample port closed, and the appropriate label is placed on the bag The labels for both the influent and effluent tedlar bag samples show the date, time, sample ID# and analyses to be run Both the influent and effluent tedlar bag samples are then placed within a cooler, on ice, and are hand delivered to WEGE' s laboratory that same day The vapor sample as then infected into an FID (Flame Ionizing Detector) ghromatograph and the resulting chromatogram compared to standard chromatograms of known TFH (Total Fuel Hydrocarbons, gasoline) and BTEX (benzene, toluene, ethlybenzene, and xylenes) concentrations A duel chromatograph comparison is also ran (Photovac 10S50) to evaluate BTEX, TCE, PCE, and DCE ON SITE ANALYSIS Besides bag samples collected for the WEGE laboratory some samples may be run on site using a Photovac 30550 PID chromatograph The influent and effluent samples are collected from the same ports as the bag samples but +r-iv cc "are-,ro „o ora tr, r,rl l or+t l�l�� `camr,lA �J and 0 5 cc of the vapor sample are then an3ected directly into the PTD chromatograph. The resulting chromatogram as then compared to a standard calibration run on the same chromatograph prior to the sample run. page 3 of RG03 , 04/29/93 .r...� [ ) _ : L R t,rC.w'✓..r a' i' ai.,T� 5, .. _�.. a. T .