Andy Rezendes, Alpha Analytical Labs

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General PrinciplesAmbient Air Samplingwww.alphalab.com• Typically composite or time weighted average (TWA)• Duration should reflect the exposure scenario• Grab sample only if odors are an issue• Must be sampled through 2 micron particulate filter• Field duplicates obtained by co-locating canisters
General PrinciplesSoil Vapor Samplingwww.alphalab.com• Maximum flowrate = 200 mL/min• Use Teflon or polypropylene tubing to connect to soil gasprobe, check w/ lab for size (typically ¼” OD)• Must be sampled through 2 micron particulate filter!!!!• Field duplicate sampling an issue; tee-off co-locate?• Provide screening data on COC if available
Page 1 and 2: Analytical Methods forAir and Vapor
Page 3: www.alphalab.comAnalytical Methods
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Page 8 and 9: www.alphalab.comCanister Sampling D
Page 12 and 13: www.alphalab.comPost - Sampling, wh
Page 14 and 15: Subslab Mitigation Systems andPVC C
Page 16 and 17: MADEP Vapor Intrusion GuidanceWSC#
Page 18 and 19: MADEP Guidance-SamplingIndoor Airww
Page 20 and 21: • “Hybrid method” of TO-15 an
Page 22 and 23: CAM Methods for TO-15and APHwww.alp
Page 24 and 25: CT & RI RSR Criteriawww.alphalab.co

Andy Rezendes, Alpha Analytical Labs

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