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EXPLANATION Vapor Sampling Manifold <br /> Vacuum Gauge Critical Orifice <br /> Three Way Valve 7 micron Flow Restrictor <br /> �T^ filter (-150mL/min) <br /> V'V Valve <br /> ® Swagelok Fitting <br /> ® Air Tight Fitting <br /> Sample <br /> Summa <br /> Canister <br /> Helium <br /> Tank Rotameter <br /> Air Outlet Flow Gauge <br /> Valve with <br /> Shroud <br /> Sample Adjustable <br /> Summa Valve <br /> Critical Orifice Canister <br /> Purging Assembly <br /> Flow Restrictor <br /> (-150mVmin)� DllutlOn <br /> Teflon Tubing Valve <br /> Shroud <br /> a' <br /> Helium Vacuum <br /> Meter Pum * <br /> *or Summa <br /> Canister <br /> Soil Gas or vacuum <br /> Bentonite or Subslab ProbeChamber <br /> Weather Stripping TBag <br /> 9 <br /> Seal Figure <br /> Probe and Shroud Assembly Vapor Screening Assembly 2 <br /> Subslab Vapor Sampling <br /> 13PAN E A Manifold Schematic <br />