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Revised FFR Levine Fricke <br /> Tfie SVE conveyance piping will be connected to the blower and emissions control <br /> equipment using PVC piping and heavy-wall flexible tubing All conveyance piping <br /> will be sized adequately to mttumize flow restrictions and pressure losses to the vapor <br /> stream. <br /> 5.4.2 Emissions Control <br /> As discussed in Section 5 3, a commercially available skid-mounted vapor phase carbon <br /> unit will be used for the pilot test w compliance with applicable permits <br /> 5.4.3 Instrumentation and Monitoring <br /> The frequency and type of parameters that will be measured during the SVE tests. and <br /> the mstrumentation typically used to monitor these parameters, ate specified m Table l <br /> These parameters include <br /> air pressure (vacutun) <br /> air flow rate <br /> extracted air temperature <br /> oxygen and carbon dioxide levels <br /> VOC concentration <br /> Descriptions of each type of measurement are presented below <br /> 5.4.3.l Vacuum Pressure Monitoring <br /> The fully screened dual-purpose and partially screened extraction wells will be <br /> i suumer ted with vacuum gauges to measure pressure changes in the unsaturated zone <br /> soils. Each of the surrounding monitoring wells will be equipped with Magnehelic <br /> gauges at the appropriate scale A range of gauges with different scales will be <br /> available during the tests to allow measurement of a range of soil vacuum rates The <br /> maximum gauge sensitivity will be 0 01 m-H2O A barometric pressure transducer and <br /> data logger will be operated just before and during the baseline acid extraction tests to <br /> record potential fluctuations in atmosphem pressures. <br /> The extraction well vacuum w91 be monitored with a Magnehelic gauge connected to a <br /> sample port installed at the wellhead In addition, the vacuum at the blower will be <br /> measured to detect line pressure drop and to monitor the Toads on the blower <br /> 5.4.3.2 Vapor Flow Monitoring <br /> The vapor flow rate of the extraction system will be monitored with a pitot tube and <br /> differential pressure gauge itt.s#alled in the conveyance piping where it exits from the <br /> wp.SVGC::S-Lar1-mv-0s123 roc W Page 17 <br /> 0b/bt d 8IrZ0b9PGOZT 01 906b ZS9 0TS 3>17I63 3NI033-1 23-1 2U BE 9Y Z'0, 60 -nf <br />