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M <br /> W� WO <br /> 44T <br /> ...... ...... <br /> M NO <br /> TECHNICAL APPROACH <br /> 3. 1 TASK I INITIAL FIELD TESTS AND SYSTEMS DESIGN <br /> The coil vapor petroleum hydrocarbon concentrations from tier coil <br /> vapor extraction walla and the coil vapor tranamiceivity were <br /> tooted on 24 April 1989, an diocuoned above In Chapter 1. The <br /> VETS unit installation outlined In thio proposal is based on that <br /> Initial f1014 toot. <br /> 3.2 TASK 11 - VETS PERMITTING .'ND 114STALLATION <br /> The five onnite vapor extraction wells Vi, V2, V3, V4, and V5 <br /> will be plumbed to a central point in the approximate cantor of <br /> the 5 woJ15, using 2-inch diameter I-VC pipe (Figure 3). The five <br /> vOlIc vIll be manifolded to a "acstech Multimodo combustor unit <br /> consisting of ( 1 ) a 100-cfm vacuum compressor unit (CU) which <br /> inducta the air <br /> flow through the contaminated coil via the vapor <br /> extraction wella, (2) a vapor control proceacor (VCP), an Incin- <br /> orator In which the ext.-acted hydrocarbon vapors are burned above <br /> gas jets. and (3) a catalytic reactor (CAR) where tha remaining <br /> .ow-concentration hydrocarbon vapors are catalyzed to purity with <br /> essentially 99.9 percent efficiency. The Hasstech Holtimode <br /> combusAr specifications and description are Included as Appendi.x <br /> The CU, VCP, and CAR units will bo mounted on a 6-foot by 15-foot <br /> concrete slab located as shown In Figure 4. Power will be <br /> brought onsite from Oxisting utility lines and run underground to <br /> the VFTS. <br /> The flow line from each. vapor extraction well will contain a <br /> f-valve-to-rettrict-or cwTp1etojy-shUt-bff- vapor--floe,--------------- <br /> a <br /> vacuum gauge to measure in-tinct flow vacuum, a flow meter to <br /> measure the amount of <br /> vaP-r flowing through the system, and a <br /> sample port toz r.-ollection of vapor samples. This u7stom <br /> configuration 1% shown In Figure S. <br /> C52/91918/text 5 <br />