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3.9 Pilot Test Vapor Sampling <br /> Vapor samples from treatment system influent and effluent as well as individual SVE wells will be <br /> collected in Summa canisters and Tedlar bags. A portable vacuum pump will be used to establish a <br /> negative pressure in the vapor stream and a sample will be pulled through the apparatus and into <br /> the Tedlar bag. Samples collected into Summa cannisters will be collected through a flow <br /> regulator. Samples will be collected from individual wells through the associated manifold <br /> sampling ports. <br /> Environmental/LNC/Workplan/Appendix 2.wpd 9 <br />