AARST_Radon_Reporter_Q42025

THE RADON REPORTER | 11 AARST National Standards Committees Updates The AARST National Standards Committees have continued to make remarkable progress in 2025, strengthening the technical foundation for radon and vapor intrusion (VI) professionals nationwide. Through the collaborative work of volunteer committee members, chairs, and the Consortium Secretariat, Gary Hodgden, the Association is ensuring that standards remain current, science-based, and responsive to industry needs. Progress Toward 2026 Publications Several major standards are slated for publication in 2026, including: • CCAH (Soil Gas Control in New Construction of 1 & 2 Family Dwellings and Townhouses) – Fully revised to incorporate vapor intrusion considerations. The committee worked more than two years to produce this document with harmonization back and forth with CC-1000. The last public review that ended August 4, 2025, received no negative comments. The Consortium Executive Stakeholder Committee (ESC) voted to approve CCAH to be published as a revised ANSI/AARST American National Standard. • CC-1000 (Soil Gas Control Systems in New Construction of Multifamily, School, Commercial, and Mixed-Use Buildings) – The committee worked almost four years to produce several incremental updates that now include harmonization with the new CCAH. The last public review that ended September 1, 2025, received no negative comments. The Consortium ESC voted to approve CC-1000 to be published as a revised ANSI/AARST American National Standard. • SG-OMM (Long-term Stewardship of Radon and Soil Gas Hazards) – A new standard focused on property owners and stewardship responsibilities. These publicationsmark significant progress in harmonizing radon and VI standards and in expanding their applicability across different building types. Mitigation and Measurement Standards Committees continue to work through public comments for the SGM- SF and SGM-MFLB mitigation standards, with incremental updates expected through 2026 and 2027. Likewise, measurement committees are working on revisions to MAH and MA-MFLB , the core protocols for conducting radon and radon decay product measurements in homes, multifamily, and commercial buildings. Updates are also underway for the MS-QA standard to be published in 2026 that include labeling blanks and spikes as “QA/ QC” when sending to analysis labs. An exploratory new project is also underway for MS-PC that entails evaluating performance specifications for consumer grade radon measurement instrumentation. Radon in Water The MW-RN standard (Protocol for the Collection, Transfer, and Measurement of Radon in Water) is undergoing important updates for publication in 2026, alongside new work on RMS-W, which will define radon mitigation practices for water systems. Vapor Intrusion and Integrated Standards The MAVI project (Vapor Intrusion Measurement and Sampling of Indoor Air and Sub-Slab Soil Gas ), which is registered with ANSI, will establish a consistent framework and methodologies to be used in risk assessments, regulatory compliance, and informed decision-making. Leadership and Appreciation Special recognition is due to Gary Hodgden, the Consortium Secretariat, for his exceptional coordination and leadership through another demanding year. The work of volunteer committee chairs, including Shawn Price, Bill Angell, Mike Kitto, Bob Coffee, and others, along with staff support from Kim Steves has been invaluable in keeping projects on track and maintaining high professional standards. The AARST National Standards Committees continue to ensure that radon and vapor intrusion practices are grounded in science, shaped by transparency and collaboration, and dedicated to advancing public health while strengthening trust in the professionals who safeguard indoor environments. STANDARDS