ANSI/AARST CC-1000-2018-0523 (PDF)

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Soil Gas Control Systems in New Construction of Multifamily, School, Commercial and Mixed-Use Buildings – Rev. 5/23

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Description

ANSI/AARST CC-1000-2018-0523

Soil Gas Control Systems in New Construction of Multifamily, School, Commercial and Mixed-Use Buildings – Rev. 5/23

The provisions in this standard provide prescriptive 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. This standard addresses construction of buildings that include, among others, the use of a building or structure, or a portion thereof for multifamily or congregate residential occupancies, educational occupancies, and commercial occupancies. Updates for 2023 This standard of practice was first published in 2017 and experience since that time was considered in many updates made. The title of the standard was changed for clarity and improvements include:

  • Inspections cited during various stages of construction are required rather than optional
  • Clarity on qualified professionals needed to implement diagnostic events and effective designs
  • Clarity on sealing and soil gas retarder products and installation for completing an air barrier between soil and indoor air
  • Integration of existing and improved vapor intrusion design features into sections where items apply.
** While recommended for immediate use, the effective date for compliance with this standard is December 1st, 2023.