US Vereinigte Staaten von Amerika
  • 03 - Dienstleistungen, Betriebswirtschaft, Verwaltung, Qualität, Verkehr, Soziologie
  • 13 - Umwelt, Gesundheitsschutz, Sicherheit
  • 23 - Fluidsysteme und -bauteile
  • 71 - Chemische Verfahrenstechnik
  • 97 - private und kommerzielle Hauswirtschaft, Unterhaltung, Sport

Chemical substances; Quality (ICS 03.120), Environmental protection (ICS 13.020), Ventilators. Fans. Air-conditioners (ICS 23.120), Production in the chemical industry (ICS 71.020), Products of the chemical industry (ICS 71.100), Domestic refrigerating appliances (ICS 97.040.30)

Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program

Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, the Agency is proposing, as an additional option, to list for a limited period of time certain substances in the foamblowing sector, extruded polystyrene: Boardstock and billet end-use, as acceptable, subject to narrowed use limits. This proposal supplements the Agency's 12 June 2020, proposal with respect to the proposed listings in the foam-blowing sector, taking into consideration public comments and information received since issuance of the initial proposal. In the 12 June 2020, proposal, EPA proposed to list three foam blowing agent blends as acceptable. In this supplemental proposal, EPA is proposing an additional approach to list these blends as acceptable, subject to narrowed use limits, in the foam blowing sector, extruded polystyrene: Boardstock and billet end-use, from the effective date of a final rule based on this supplemental proposal until 1 January 2023. The Agency is providing an opportunity for public comment on this additional approach for the listings in the foam blowing sector, as well as reopening the public comment period for the proposed listings in the foam blowing sector in the 12 June 2020, proposal. The Agency is not reopening for comment those other portions of the 12 June 2020, proposal which are addressed in a separate final rule issued 6 May 2021.

DATES: Comments on this supplemental proposal must be received on or before 22 November 2021. Any party requesting a public hearing must notify the contact listed below under FOR FURTHER INFORMATION CONTACT by 5 p.m. Eastern Daylight Time on 12 October 2021. If a virtual hearing is held, it will take place on or before 21 October 2021 and further information will be provided on EPA's Stratospheric Ozone website at