Regulation 2 Rule 5: New Source Review of Toxic Air Contaminants - 2021 Amendment (Current)

Learn about the Air District's development process for amendments to Regulation 2, Rule 5, which states requirements for air toxics permitting.

Find out about the status of the rule development process. Information on hearings, workshops, and other events is provided below.

Amendments to Regulation 2, Rule 5 (Permits – New Source Review of Toxic Air Contaminants) were adopted by the Air District Board of Directors at a public hearing on December 15, 2021, along with amendments to Regulation 2, Rule 1. The adopted amendments are effective July 1, 2022:

The Air District has created an interactive mapping tool, the Overburdened Communities Map, which allows someone to determine if a project or facility is located within an overburdened community and subject to the more stringent health risk limits, public noticing requirements, and fees.

The Air District developed proposed amendments to specific rules within Regulation 2: Permits that pertain to new and modified sources of air pollution. These rules require permit applicants to apply for and demonstrate compliance with various emissions and exposure requirements to protect Bay Area air quality. In response to concerns regarding localized differences in air quality, the Air District has amended relevant portions of permitting rules to help ensure communities that are overburdened by poor air quality and health vulnerabilities are further protected from sources of air pollution. At a public hearing on December 15, 2021, the Air District amended two rules under the Permitting Regulation - Rules 2-1 and 2-5 - to minimize emissions to the environment and exposure to air pollutants by Bay Area residents.

Information on the rule development process for the amendments to Rules 2-1 and 2-5, including supporting documents, can be found on this page, as well as the Rule 2-1 Amendments web page.

Page Loading

Hearings, Workshops and Other Events

Throughout the rule development process, we provide information on upcoming and past workshops, hearings, and other events.

Page Loading


Supporting materials, such as staff reports, regulatory language, and other technical documents related to rule development, are posted throughout the development process.

Page Loading


The Air District provides opportunities for the public to submit comments throughout the development process, and posts comments received during the open public comment periods.

Page Loading

Contact Us

General Engineering Information


Contact Us

Spare the Air Status

Last Updated: 1/22/2024