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Table of Contents <br /> I. Introduction ....................................................................................................................4 <br /> II. Soil vapor sampling probes...........................................................................................4 <br /> A. Permanent probes using hollow-stem augers..................................................................4 <br /> B. Permanent and temporary probes using direct-push techniques...................................8 <br /> 1. Direct-push soil vapor sampling probes(implant type).........................................9 <br /> 2. Direct-push soil vapor sampling probes(post-run tubing system,PRT)............. 10 <br /> C. Sub-slab vapor sampling probes......................................................................................l l <br /> III. Soil vapor sampling................................................................................................... 14 <br /> A. Sampling equipment.........................................................................................................15 <br /> B. Field activities prior to sampling/documentation..........................................................17 <br /> C. Equilibration time..............................................................................................................17 <br /> D. Purging............................................................................................................................... 17 <br /> E. Leak testing........................................................................................................................18 <br /> F. Sample collection................................................................................................................ 19 <br /> 1. Sample containers.................................................................................................20 <br /> 2. Vacuum/flow rate and flow regulator/particulatefilter........................................20 <br /> 3. Sample collection.................................................................................................21 <br /> IV. Analytical techniques.................................................................................................22 <br /> A. VOCs/SVOCs.....................................................................................................................23 <br /> B. Fixed gases.........................................................................................................................23 <br /> V. Data reporting .............................................................................................................23 <br /> VI. Additional resources..................................................................................................24 <br /> VII. References.................................................................................................................25 <br /> ETC Soil Vapor Sampling Technical Toolkit 2 <br /> Version 1.4, September 7,2005 <br />