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AARST: American Association of Radon Scientists and Technologists

AARST, the American Association of Radon Scientists and Technologists, is a nonprofit organization headquartered in Fletcher, North Carolina and founded in 1988. AARST has been creating national radon standards with ANSI approval since the early 2000s. AARST does work in Washington, D.C. on public policy, steadily gaining agreement there that radon is the second leading cause of lung cancer. The leadership of the organization is democratically elected by the members. Standards from AARST are available both individually, directly through the ANSI webstore, and as part of a Standards Subscription. If you or your organization are interested in easy, managed, online access to standards that can be shared, a Standards Subscription may be what you need - please contact us at: StandardsSubscriptions@ansi.org or 1-212-642-4980 or Request Proposal Price.

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ANSI/AARST MAH-2019

Protocol for Conducting Measurements of Radon and Radon Decay Products in Homes

This standard of practice specifies procedures and minimum requirements for measuring radon concentrations in single-family residences for determining if radon mitigation is necessary to protect current and future occupants. This standard applies to homeowners, professionals and any other party seeking to determine if radon mitigation is necessary for real estate or non-real-estate purposes. Limitations - This standard does not address all technical aspects of measurement device technology, quality assurance or techniques to specifically identify radon sources such as radon in water supplies, building materials or relative to the possession and handling of radioactive materials.


ANSI/AARST CC-1000-2018

Soil Gas Control Systems in New Construction of Buildings

This standard provides minimum requirements for the construction of any building intended for human occupancy, except for 1 and 2 family dwellings, in order to reduce occupant exposure to radon and other hazardous soil gases. It addresses buildings that include, among others, the use of a structure, or a portion thereof for educational, commercial and multifamily or congregate residential occupancies.


ANSI/AARST MAMF-2017 rev.1-21

Protocol for Conducting Measurements of Radon and Radon Decay Products in Multifamily Buildings

This standard of practice specifies procedures and minimum requirements when measuring radon concentrations in shared structures, or portions of shared structures, used for residential, non-residential or mixed use purposes to determine if radon mitigation is necessary to protect current and future occupants. 1-21 revisions to this publication include harmonization of most provisions to read the same across both ANSI/AARST MAMF and ANSI/AARST MALB.


ANSI/AARST SGM-SF-2017 rev.12-20

Soil Gas Mitigation Standards for Existing Homes

This standard specifies practices, minimum requirements and, general guidance for reducing soil gas entry into existing homes in order to mitigate occupant exposures to certain hazardous soil gases, including radon gas, chemical vapors and other hazardous gases. 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.


ANSI/AARST MALB-2014 rev.1-21

Protocol for Conducting Measurements of Radon and Radon Decay Products in Schools and Large Buildings

This standard of practice specifies procedures and minimum requirements when measuring radon concentrations in shared structures, or portions of shared structures, used for residential, non-residential or mixed use purposes to determine if radon mitigation is necessary to protect current and future occupants. 1-21 revisions to this publication include harmonization of most provisions to read the same across both ANSI/AARST MAMF and ANSI/AARST MALB.


ANSI/AARST RMS-MF-2018 rev.12-20

Radon Mitigation Standards for Multifamily Buildings

This standard specifies practices, minimum requirements and general guidance for mitigation of radon in existing multifamily buildings, including both low-rise and high-rise multifamily 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.


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

Radon Mitigation Standards for Schools and Large Buildings

This standard 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.


ANSI/AARST MS-QA-2019

Radon Measurement Systems Quality Assurance

This standard of practice specifies minimum requirements for quality systems designed to quantify the concentration of 222Rn gas in air by qualified professionals and laboratories, whose data are intended to be used to determine the need for, or success of, radon mitigation. This standard is applicable to the wide variety of radon measurement devices used for indoor measurements, primarily in residential environments or buildings not associated with the possession or handling of radioactive materials.


ANSI/AARST CCAH-2020

Reducing Radon in New Construction of One & Two Family Dwellings and Townhouses

This standard provides minimum requirements for the rough-In of radon control system components in new dwelling units under construction. CCAH also includes minimum requirements for verifying if radon concentrations are below the national action level and, if required, activation of radon control systems. This standard is harmonized to compliment the standard designated as ANSI/AARST RRNC, which replicates construction activities for rough-In components only.


ANSI/AARST RRNC-2020

Rough-in of Radon Control Components in New Construction of 1 & 2 Family Dwellings and Townhouses

This standard provides minimum requirements for the rough-In of radon control system components in new dwelling units under construction. This standard is harmonized with ANSI/AARST CCAH, which additionally addresses requirements for verifying if radon concentrations are below the national action level and, if required, activation of radon control systems.


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