ANSI/AARST SGM-MFLB-2023Soil Gas Mitigation Standards for Existing Multifamily, School, Commercial and Mixed-Use Buildings
This standard of practice specifies minimum requirements for methods that mitigate risks to occupants posed by the presence of radon gas and chemical vapors or gas in existing multifamily, school, commercial and mixed-use buildings. SGM-MFLB consolidates radon mitigation standard published as ANSI/AARST RMS-MF (rev. 12/20) and ANSI/AARST RMS-LB (rev. 12/20) into a single publication and is now harmonized for interactive use with ANSI/AARST SGM-SF (Soil Gas Mitigation in Existing Homes). SGM-MFLB provides only: a) content that is in addition to requirements already rendered in SGM-SF b) content not normally associated with mitigation of homes. ** While recommended for immediate use, the effective date for compliance with this standard is December 1st, 2023.