DescriptionANSI/AARST SGM-SF-2017 – REV. 12/20 Soil Gas Mitigation Standards for Existing Homes This standard specifies practices, minimum requirements and, general guidance for reducing soil gas entry into existing homes in order to mitigate occupant exposures to certain hazardous soil gases, including radon gas, chemical vapors and other hazardous gases. 12/20 revisions to this publication include updates to Sections 6, 7 and 8, relative to active soil depressurization (ASD), where most provisions have been harmonized to read the same across ANSI/AARST SGM-SF, RMS-MF and RMS-LB. For compliance purposes, the effective date of this publication is 9/1/2021.
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