CC-1000_2018

Soil Gas Control Systems ANSI/AARST CC-1000 2018 in New Construction of Buildings 1 CC-1000 2018 Soil Gas Control Systems in New Construction of Buildings SECTION 1: SCOPE 1.1. General 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 4,5 in order to reduce occupant exposure to radon and other hazardous soil gases. This standard and informational supplement 6 address 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. 1.2 Significance of use This standard of practice stipulates requirements to: a) ensure buildings are capable of mitigating soil gas entry; b) provide a means for qualified personnel to inspect and evaluate installed mitigation systems; and c) provide responsible practices that can be recommended or adopted for use as requirements of a contract or local jurisdiction. 1.3 Applicability This standard can be adopted as requirements for contractual relationships or as recommendations or requirements of an authority or jurisdiction. Informative— When deciding whether to require or apply practices set forth in this standard, note that: a) Radon and other hazardous soil gas can be found in any location or building site regardless of existing surveys, maps or listed sites; b) Local state radon programs often publish updated information on how often radon has been found locally; and c) An older radon zone map published by EPA (www.epa.gov/radon) can be helpful where local data are not published. 4 As point of reference, see the International Building Code (IBC) (as published by the International Code Council) for occupancy groups A, B, E. F, H, I, M and R unless regulated by the International Residential Code (IRC) (as published by the International Code Council) for 1 & 2 Family Dwellings. 5 For 1 & 2 Family Dwellings, see ANSI/AARST CCAH "Reducing Radon in New Construction of 1 & 2 Family Dwellings and Townhouses” 6 For details on technology and best practices, see the CC- 1000 Companion Guidance Document" 1.4 Non-normative optional provisions A choice of prudent protective options in addition to minimum requirements in this standard are provided in Annexes. Provisions not required unless specifically referenced in an adopted ordinance, contract or design requirements include: Annex A (Compliance inspections); Annex B (Active soil depressurization required); Annex C (Provide radon test kits); and Annex D (Conduct testing prior to occupancy). 1.5 Limitations 1.5.1 1- and 2-family dwellings and townhouses While this standard expands into technological specifics associated with any radon resistant construction effort, more simplistic minimum requirements for dwellings with a footprint of less than 2,500 square feet are provided in other standards 5 . 1.5.2 Action levels and guarantees Compliance with provisions herein do not guarantee reduction of soil gas entry to the degree needed to achieve compliance with federal, state or local jurisdiction action levels for radon or soil gas hazards. 1.5.3 Passive qualities for reducing soil gas entry 1.5.3.1 Informative— Any benefits in reducing soil gas entry with passive systems are negated if a continuous barrier has not been established between soil gas and airspaces within a building. 1.5.3.2 Informative— Building designs intended to optimize passive benefits can require more soil gas vent systems than the minimum requirements herein. In 1994, EPA recommended to rough-in active soil depressurization (ASD) systems during construction of schools and large buildings but did not recommend using passive systems. 7 1.5.4 Alternate mitigation methods Designs that employ heating, cooling or ventilation (HVAC) systems to supplement mitigation shall comply with ANSI/AARST RMS-MF Radon Mitigation Standards for Multifamily Buildings or ANSI/AARST RMS-LB Radon Mitigation Standards for Schools and Large Buildings , as applicable. Effectiveness requires sustained control of complex pressure relationships and air exchange rates within a building at all times a building is occupied over the life of the building. 1.5.5 Hazardous soil gases other than radon While methods and techniques employed in this standard are applicable for most soil gases, this standard does not include all design and safety features that can be required for soil gas or vapors other than radon. For additional health and safety considerations when the purpose of soil gas control is 7 "Radon Prevention in the Design and Construction of Schools and other Large Buildings" EPA/625/R-92/016