ANSI AARST RMS-LB-2018 rev.12-20

ANSI/AARST RMS-LB-2018 rev.12-20 specifies practices, minimum requirements and general guidance for mitigation of radon in existing schools and large buildings, including both low-rise and high-rise schools and large buildings. 12/20 revisions harmonize Sections 6, 7 and 8 across ANSI/AARST SGM-SF, RMS-MF and RMS-LB. While recommended for immediate use, the effective date of this revised standard for compliance purposes is Sept. 1st, 2021.