On July 13, 2020, the U.S. Environmental Protection Agency (EPA) proposed to retain, without revision the primary and secondary ozone National Ambient Air Quality Standards (NAAQS). The standards, established in 2015, are currently set at 70 parts per billion (ppb), in terms of a 3-year average of the annual fourth-highest daily maximum 8-hour average ozone concentrations. EPA’s proposal is based on its judgement that the current NAAQS protect the public health, including the health of at-risk populations with asthma, and protect the public welfare from adverse effects. NTAA recommends that the EPA set the standards to 60 ppb.
The deadline for comment is October 01, 2020 11:59pm ET and is published in the Federal Register as Docket ID No. EPA-HQ-OAR-2018-0279-0044
NTAA NAAQS for Ground Level Ozone Fact Sheet
NTAA Tribal Template Comment Letter for Ozone NAAQS to help you respond to this proposal
NTAA also partnered with the California Air Resources Board to host an informational webinar for Tribes on EPA’s Proposed NAAQS Review of Ground Level Ozone on September 15th at 2pm ET. Click the link below to download the presentation slides.
NTAA Informational Webinar Presentation on Ozone NAAQS Review 9.15.20
You can view a recording of the webinar here: