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\ 8 Shut down IC engine and call Modesto <br /> 9 Submit vapor samples to Sequoia Analytical <br /> l LONG TERM VAPOR EXTRACTION TEST (day two) <br /> 1 Pre-test Procedures� ' <br /> 1 Measure depth-to-water in extraction well (VW3) <br /> 1 2 At extraction wellhead VW3, install PVC riser and alIPin ip g to connect to IC engine <br /> 3 Install pitot tube, gauges, temperature gauge, etc for morutoritng influent stream <br /> 4 Install monitoring caps on all observation wells, hookup magnehelic gauges set to zero <br /> 5 Record vacuum or pressure readings at all momtorirng points prior to testing <br /> Vapor Extraction Test Procedures <br /> ` 1 Start up blower, initiate vapor extraction at low flow and step up flow rate/vacuum <br /> throughout the test at 30 to 60 minute intervals if possible <br /> 2 Monitor flow, temperature, influent and effluent concentrations with FID, vacuum, and <br /> pressure for extraction and observation wells at 15 minute intervals <br /> 3 Monitor response in observation wells at 15-minute intervals <br /> 4 Check knockout drum regularly, empty as needed Reduce/flow vacuum if pulling to <br /> much water <br /> r 1 5 Collect an influent and effluent vapor sample after approximately 15 minutes of operation <br /> L for laboratory analysis of TPHg/BTEX by 8015/8020 and MTBE and oxygenates by <br /> 8260 <br /> 6 Collect an mfluent sample at the end of the test for laboratory analysis of TPHg/BTEX by <br /> 8015/8020 and MTBE and oxygenates by 8260 <br /> _ 7 Vapor extract for two to four hours Continue operation as long as possible until field <br /> readings stabilize or a maximum of four hours <br /> IL 8 Shut down IC engine and call Modesto <br /> 9 Submit vapor samples to Sequoia Analytical <br /> I <br />