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r a <br /> REGAL 603 8/16/91 <br /> valves with sample ports will be used to connect thehetwo <br /> sedimentank <br /> excavation risers, monitor wells MW1, pSW2 and MW3, <br /> tank, and the Air stripping "Convault" that will be connected to <br /> Sam <br /> the vapor extraction manifold. Sample ports will also be <br /> positioned at the influent and effluent ends of the Mower for <br /> obtaining vacuum/pressure and <br /> eraturint.oe thedinq?cinerratorand mplfor <br /> The effluent will then proceed range hydrocarbons produces <br /> destruction. Incineration of gasoline <br /> water vapor and" CO;,. A sample port at the effluent o£ the <br /> will be used for obtaining sample, pressure <br /> incinerator and <br /> After one month of operations (30 days) and <br /> temperature readings. <br /> evaluation as to the effeseevFieure 73 Schematic of Vapor <br /> recovery/destruction will be made, 9 <br /> Recovery System- <br /> 3.3 HYDROCARBON VAPOR SOURCE TEST <br /> A source tperformed on monitor odetermine <br /> available hydrocarbons for vapor This sourcetest was <br /> 1991 and was shut down at 8 <br /> started at 3 PM on Friday, January, lasting for a total of 89 hours <br /> AM Tuesday, January 15, <br /> averaging a removal of 625 pounds of hydrocarbons per day for a <br /> total of 2313 pounds of hydorcarbons as gasoline removed during <br /> the test. 85 gallon acitvated charcoal tub scrubs were used as <br /> ng <br /> emission control and daily mpTetdictngbreakthroughwith a i. The PID <br /> detector (PID) was used to p <br /> indicated that breakthroughmay <br /> be <br /> enoccur <br /> bag sample (tthe ing Mcharcoal onday tand <br /> PM) . bag) effluent at <br /> that time (5 PM) Analysis of this sample was calculated early <br /> Tuesday morning and the sample showed break through had occurred <br /> and the test was shut down at 8 AM that morning. During the <br /> source test, MW10 was disconnected from the blower and the two <br /> connected for a duration of 1/2 hour <br /> risers in the tank field were <br /> to obtain source samples that could he generated from the tank <br /> backfill, see Appendix C. <br /> A bag sample was then obtained and brought back to WestterninGeo- <br /> Engineers portable laboratory in Woodland, California, <br /> late the <br /> evening. T--,e sample vas immediately run the next morning and <br /> determined that breakthrough had occurred. The pilot test WCs <br /> then terminated that day, see Tables 1 and 2 of App <br /> During the source test, bag samples were obtained from monitor <br /> well MW10 and showed a relatively stablevapor <br /> stream cof5isting <br /> of 1.19 to 164 mg/L (3.1,000-42,700 pp gasoline <br /> Fuel Hydrocarbons (TFH} in air along trash lroductionmethane <br /> andstitktis <br /> area is a known basin for natural g P <br /> believed that this methane is produced from the underlying <br /> g <br /> Cretaceous formations and not from a leak in the as main) . <br /> At <br /> the completion of the test the extraction system was connected to <br /> PAGE 8 <br />