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. 

Rule Development

Please see the Governing Board Meeting Agenda for participation information.

Proposed Rule Actions

SIP Cleanup: SC 1141 - Control of VOC Emissions from Resin Manufacturing. The 4/3/1992 version of SCAQMD 1141 has remained in the SIP for the entire jurisdiction, including the Blythe/Palo Verde Valley area in Riverside County, following the Blythe/Palo Verde Valley joining the MDAQMD, and following multiple Federal Negative Declarations that the MDAQMD has no facilities subject to the provisions of this rule.  Therefore, the MDAQMD by this action will officially request that the 4/3/1992 version of SCAQMD 1141 be officially removed from the Riverside County portion of the MDAQMD . This SIP Cleanup is proposed for the October 28, 2024 Governing Board Meeting. Draft Staff Report.

SIP Cleanup: SC Rules 1105 - Fluid Catalytic Cracking Units - Oxides of Sulfur; 1119 - Petroleum Coke Calcining Operations – Oxides of Sulfur; and 1123 - Refinery Process Turnarounds. The March 2^nd, 1979 version of SCAQMD 1119, the September 1^st, 1984 version of SCAQMD 1105 and the December 7^th, 1990 version of SCAQMD 1123 remain in the SIP for the Riverside County portion of the MDAQMD. Each of these rules regulate operations or processes which occur at petroleum refineries. The MDAQMD has adopted on a number of occasions a Federal Negative Declaration certifying that the petroleum refinery industry is not present within its jurisdiction.  The MDAQMD has, in previous SIP Clean Up actions, requested the removal of subsidiary rules applicable to the petroleum refinery industry (SC1173, 4/22/2024; SC1102, 6/26/2023). This action will continue the SIP cleanup for this source category by requesting the removal of SCAQMD Rules 1105, 1119 and 1123 and acknowledgement that the approved Federal Negative Declarations are adequate for SIP purposes within the MDAQMD. This SIP Cleanup is proposed for the October 28, 2024 Governing Board Meeting. Draft Staff Report

Recent Rule Actions

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

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

June 10 & June 24, 2024 

• Regulation III - Fees: Rules 301, 302, and 303 - Adopted
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1153 – Commercial Bakery Ovens - Adopted
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1159 – Nitric Acid Units - Oxides of Nitrogen - Adopted

April 22, 2024

• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1173 – Control of VOC Leaks and Releases from Components at Petroleum Facilities and Chemical Plants - Adopted
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rules: 1107 – Miscellaneous Metal Parts, Products and Coating Operations, 1125 – Metal Container, Closure and Coil Coating Operations, and 1126 – Magnet Wire Coating Operations - Adopted
• SIP Cleanup - Rescission of South Coast Air Quality Management District Rule 1103 — Pharmaceuticals & Cosmetics Manufacturing Operations - Adopted

March 25, 2024

• Rule 1160.2 - Large Engines in Pipeline Transportation of Natural Gas - Withdrawn
• SIP Cleanup: Rescission of SCAQMD Rules 1115 - Motor Vehicle Assembly Line Coating Operations, and 1151 - Motor Vehicle & Mobile Equipment Non-Assembly Line Coating Operations - Adopted
• Regulation XIII*: Rules 1301 - New Source Review Definitions, Rule 1302 - New Source Review Procedure, Rule 1303 - New Source Review Requirements, Rule 1304 - New Source Review Emissions Calculations, Rule 1305 - New Source Review Emissions Offsets - Amended. 
  *This action did not include Rule 1300 - General, nor 1306 - Electric Energy Generating Facilities 
• MDAQMD Federal 75 PPB Ozone Attainment Plan (Western Mojave Desert Ozone Nonattainment Area)  - Amended

February 25, 2024

• SIP Cleanup: Rescission of SCAQMD Rule 1136 – Wood Products Coatings  - Adopted
• SIP Cleanup: Rescission of SCAQMD Rules 1122 - Solvent Metal Cleaners (Degreasers), and 1171 - Solvent Cleaning Operations - Adopted

January 22, 2024

• Rule 900 - Standards of Performance for New Stationary Sources (NSPS) - Amended 
• SIP Cleanup: Rescission of SCAQMD Rules 1108 – Cutback Asphalt and 1108.1 – Emulsified Asphalt - Adopted

October 23, 2023 

• Rule 401 -  Visible Emissions - Amended
• Rule 114 - Registration Program for Compression Ignition Engines Used In Small Agricultural Facilities - Amended
• Rule 1121 - Natural Gas-Fired Water Heaters - Adopted

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