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Soil vapor extraction is typically used for removing organic vapors to remediate vadose zone <br /> soils and to remove the source of groundwater contamination The primary objective of SVE is <br /> removal of contaminant mass, but regulations may require achieving a stipulated concentration <br /> in the soil The goals for the soil vapor extraction system should consider the nature of the nsk <br /> associated with the site If the primary goal is protection of ground water, the SVE system should <br /> reduce the soil concentrations to levels that would not result in groundwater concentrations <br /> exceeding acceptable risk at an exposure point <br /> 3) References <br /> Coordinate this checklist with the Vapor/Off-gas Blower and Piping, Process Instrumentation <br /> and Control, Environmental Monitoring, Extraction and Monitoring Wells, and if applicable, the <br /> Vapor Phase Carbon checklists The following references may also be helpful <br /> EM 1110-1-4001 ' Soil Vapor Extraction and Bioventing <br /> EPA 600/R-96/041 Diagnostic Evaluation of In-Situ SVE-Based System Performance <br /> EPA 542/R-97/007 Analysis of Selected Enhancements for Soil Vapor Extraction <br /> 4) Data Collection Requirements <br /> Record the following information needed to run performance calculations and to check the <br /> operation of the SVE system Record the appropriate units with each value <br /> a) Describe the objectives for the SVE system (e g , source removal, vapor containment) <br /> b) What is the estimated future operation period or time for remediation? What is the basis for <br /> this estimate? <br /> c) Operating Data <br /> Collect the following SVE system data for the most recent year of operation Any additional <br /> historical data will be helpful Identify any missing data <br /> • Pressure measurements at each well and the barometric pressure at that time <br /> • Vapor flow rate at each well and the vapor flow rate at the blower inlet <br /> • Vapor temperature at each well, and at the blower inlet and outlet <br /> • Relative humidity of the extracted gas (if activated carbon is being used to treat off-gas) <br /> • Volume of liquid in the air-water separator <br /> • Blower amperage, run-time, and on/off cycles <br /> o Vapor contaminant concentrations at each well and monitoring point <br /> 06/07/99 <br /> Page 2 of 8 <br />