AARST_Radon_Reporter_July_2023

THE RADON REPORTER | 5 STANDARDS With thanks to the leadership of the AARST Consortium on National Standards, American Association of Radon Scientists and Technologists (AARST) has released the 2023 versions of eight ANSI/AARST Standards. These standards have been revised by their respective all-volunteer committees to, for example, include changes recommended by subject matter experts, make edits necessary to increase clarity, and achieve harmonization across standards. Although the 2023 standards have an effective date of December 1, 2023, they are available on the Consortium website and recommended for immediate use. Consolidations. Two pairs of previously existing standards were consolidated from four to two standards. The standards for measurement of radon in multifamily buildings and in schools and other large buildings, MAMF and MALB, have been merged into the standard titled MA-MFLB 2023 Protocol for Conducting Measurements in Multifamily, School, Commercial, and Mixed-Use Buildings. The standards for mitigation in multifamily buildings and in schools and other large buildings, RMS-MF and RMS-LB, were combined into SGM-MFLB 2023 Soil Gas Mitigation Standards for existing Multifamily, School, Commercial, and Mixed-Use Buildings. New versions of six other standards are also now available: • MAH 2023 Protocol for Conducting Measurements in Homes • MS-QA 2023 Quality Assurance for Radon Measurement Systems • SGM-SF 2023 Soil Gas Mitigation for Existing Homes • CCAH 2020 Rev.5/23 New Construction of One- & Two-Family Dwellings • RRNC 2020 Rev.10/22 Rough-In of Radon Control Components in New Construction • CC-1000 2018 Rev.5/23 Soil Gas Control Systems in New Construction Multifamily, School, Commercial, and Mixed-Use Buildings Soil gas mitigation/control. Consistent with the prior change to the single-family mitigation standard from RMS-SF to SGM-SF, the large building standards for mitigation and new construction were retitled “Soil Gas” to reflect the reality that numerous activities that apply to controlling radon apply to the intrusion of chemical vapor contaminants. As in SGM-SF, a radon mitigation project is not mandated to achieve mitigation of other soil gas unless the scope of work specified the other soil gases, although this result may be a corollary benefit of the mitigation. 2023 ANSI/AARST Standards Released continued on page 6