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1 <br /> feasibility data for initiation of a full scale remediation system and to provide feasibility data <br /> for the installation of an IAS remediation system for groundwater at the site <br /> ' The test was performed using a Remediation Service International (RSI) Spray Aeration <br /> Vacuum Extraction (SAVE) system The vacuum extraction portion of the SAVE system <br /> ' consists of a vacuum pump driven by an internal combustion (IC) engine The vacuum <br /> pump is then connected to an extraction well (in this case, VE-1) The vacuum applied to <br /> the extraction well causes hydrocarbons in the soil to volatilize and flow through the vacuum <br /> ' pump to the IC engine The hydrocarbon vapors are burned as part of the normal <br /> combustion process Emissions from the engine are passed through two catalytic converters <br /> to insure maximum destruction of the extracted hydrocarbon vapors <br /> ' System parameters were measured using Magnehelic vacuum gauges, a Horiba exhaust <br /> analyzer and/or a PID Induced vacuum pressures were monitored at surrounding <br /> ' monitoring points (observation wells) by using Magnehelic vacuum gauges <br /> 3.6 2 Test Procedures <br /> ' P <br /> System stait-u procedures were initiated at appro amately 10 15 am on Saturday, January <br /> Y <br /> 14, 1995 The IC engine stabilized at approximately 1100 ani at 2.100 rpni The unit was <br /> ' shut down at approximately 10 40 ani on Sunday, January 15. 1995 <br /> Magnelielic vacuum gauges were attached to each of the vapor extraction observations wells <br /> as well as N1W-1, MW-3, MW-4 and VW-1 Measurements weie recorded at regular <br /> intervals throughout the test Air flow, vacuum measuiements and spai±?ing measurements <br /> collected 1 thioughout the test are included in Table 4 Field sheets are included in Appendix E <br /> A total of six air samples were collected fioni the inlet of the extraction well to measure <br /> extracted hydrocarbon concentrations The samples were collected in Tedlai bags using a <br /> negative pressure sampler Each sample was then placed in a chilled container (no ice) and <br /> ' transported under chain-of-custody to MAI Eacli sample «,as analyzed within 72 hours for <br /> TPH as gasoline and BTE&X in accordance with EPA methods 8015m and 8020, <br /> respectively <br /> 1 Air sparging was performed by injecting air, via a 12 psi compressor integrated into the <br /> SAVE system, beneath the gioundwater table at a depth of approximately 28 feet The well <br /> ' (AS-1) was designed (see Section 3 3) to provide an air-tight seal in order to force the <br /> injected air into the formation Groundwater depths, air pressure and dissolved oxygen were <br /> measured in each of the observation wells at several intervals during the test <br /> ' Groundwater samples were collected from the sparging observation wells at the termination <br /> of the test (on January 15, 1995) to measure changes in hydrocarbon concentrations <br /> Samples collected during the quarterly monitoring on January 12, 1995, were used as <br /> 5 <br /> 1 CiiApIN Rpj i 5e C 94 lei 7 <br /> CHAPIN FRPlS 95rSC 4�l:10560.' <br /> 1 <br />