RADON: New HUD Requirements

Multifamily Accelerated Processing (MAP) Guidance Update

Proficiency Program (NRPP) or the National Radon Safety Board (NRSB). All testing is still required to be conducted in accordance with the AARST Protocol for Conducting Measurements of Radon and Radon Decay Products in Multifamily Buildings (ANSI-AARST-MAMF-2017).

ASTI’s staff are NRSB-certified and all sampling is conducted according to ANSI-AARST-MAMF-2017. We can help you navigate and implement the newest version of the 2021 MAP guidance. For help with your project, please contact David Amir, ASTI's Director of Site Redevelopment Services at damir@asti-env.com or 800-395-ASTI.

The United States Department of Housing and Urban Development (HUD) released the newversion of the Multifamily Accelerated Processing (MAP) guidance in March of this year. This guidance applies to all projects except those that are “categorically excluded not subject to related laws and authorities” (CENST), although radon testing is still encouraged for these excluded projects.

Section 9.6.3.2 of the 2021 MAP guidance now requires radon testing in 100% of ground contact units and 10% of the units on each floor above ground level. Previously, only a minimum of 25% of ground contact units were required to be tested.

All testing is still required to be conducted by a radon professional certified by the American Association of Radon Scientists and Technologists (AARST), National Radon

Tech-Bits is intended to provide information concerning current environmental issues, and is not intended to provide technical or legal advice regarding any particular situation. Specific questions should be addressed to your environmental professional. © 2021 by ASTI Environmental

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