Updates to Section 7 of the HEER Office Technical Guidance Manual for soil vapor sample collection have been posted for public review. The updates primarily address the incorporation of Large Volume Purge (LVP) sampling methods for testing of sub-slab vapors and evaluation of vapor intrusion risk. Significant updates are highlighted in yellow in the text. ...
Read More Draft TGM Update, Section 7: Large-Volume Purge Vapor Sampling
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