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.

Proposed Rule Actions

Recent Rule Actions

For more detail, or for actions not listed here, please see the approved Governing Board Meeting Minutes.

August 25, 2025

• SIP Cleanup - RCAPCD Rule 56 - Scavenger Plants (1972)

June 09, 2025 

• Amendment - Regulation III - Fees: 301, 302, and 303

April 28, 2025

• SIP Cleanup - Rescission of SCAQMD Rules 1102 - Petroleum Solvent Dry Cleaners, and 1102.1 - Perchloroethylene Dry Cleaning Systems

March 24, 2025

• SIP Cleanup - Rescission of SCAQMD Rule 109 - Recordkeeping for Volatile Organic Compound Emissions
• SIP Cleanup - Rescission of SCAQMD Rule 1120 - Asphalt Pavement Heaters

February 24, 2025

• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1141.1 - Coatings and Ink Manufacturing
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1164 - Semiconductor Manufacturing

January 27, 2025

• Rule 900 - Standards of Performance for New Stationary Sources (NSPS) - Amended 

October 28, 2024

• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1105 - Fluid Catalytic Cracking Units - Oxides of Sulfur
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1119 - Petroleum Coke Calcining Operations – Oxides of Sulfur
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1123 - Refinery Process Turnarounds
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1141 - Control of VOC Emissions from Resin Manufacturing

September 23, 2024 

• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 481 - Spray Coating Operations - Adopted
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1117- Emissions of Oxides of Nitrogen from Glass Melting Furnaces - Adopted

August 26, 2024

• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1148 - Thermally Enhanced Oil Recovery Wells - Adopted
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1158 - Storage, Handling and Transport of Petroleum Coke - Adopted

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