About Rule & Plan Development

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General Information

Air District Rule Development is generally governed by Chapter 6.5 of Part 3 of Division 26 of the California Health & Safety Code (Section 40725-40731). All Regulations and Rules adopted by the Air District are required to undergo a public notice of no less than 30 days (Health & Safety Code 40725), a public hearing (Health & Safety Code 40726) and require certain findings to be made prior to adoption (Health & Safety Code 40727). Special analysis are required in certain situations (Health & Safety Code 40727.2-40728.5). Other state and federal laws may require specific additional findings and/or actions to be taken (For example: 40 CFR 51 Appendix V contains completeness criteria for State Implementation Plan submissions). Plan development requirements vary dependent upon the type of plan and the underlying Federal or State planning requirement (For example 42 U.S.C. 7511a(c)(2) contains provisions regarding Reasonable Further Progress Plans)

A Rule Development Timeline has been developed to show the progression through a standard rule development process.

MDAQMD Rule Development Calendar has been developed to comply with the provisions of Health & Safety Code 40923(a) and to provide an overview of potential upcoming rule development in.

California Environmental Quality Act (CEQA)

CEQA applies to projects undertaken, funded, or permitted by a public agency. The MDAQMD reviews projects for air quality impacts to help prevent significant environmental damage. For more information, please see the MDAQMD CEQA Guidelines Policy, or visit the California Land Use and Climate Innovation website. CEQA documents for projects within the MDAQMD jurisdiction can be submitted to projectview@mdaqmd.ca.gov.

Rule Development

Please see the Governing Board Meeting Agenda for participation information.

Rule 403 - Fugitive Dust Control: MDAQMD Rule 403 – Fugitive Dust Control is now proposed for amendment in order to correct a military exemption, clarify dust control plan (DCP) requirements, and add a definition for wind fencing. This amendment is proposed for the August 24, 2026 Governing Board Meeting. Draft Rule and Staff Report.