Rules Under Development

District Rule Development Efforts

To achieve the District’s mission of improving air quality and public health for all Valley residents, the District has developed and implemented several air quality plans to reduce emissions from stationary sources.  The control strategies outlined in existing District attainment plans include the adoption of nearly 650 of the most stringent rules in the nation, and strong voluntary incentive programs that have invested more than $4.5 billion of combined funds in clean-air projects.  Similarly, the California Air Resources Board (CARB) has adopted regulations for mobile sources.  Together, these efforts represent the nation’s toughest air pollution emissions controls.  Over the past several decades, these air quality improvement efforts have reduced nitrogen oxide (NOx) emissions (primary precursor for both ozone and PM2.5) from mobile and stationary sources by over 75%, including a greater than 93% reduction from stationary sources under the District’s jurisdiction, resulting in significant air quality progress towards meeting the health-based federal ozone and PM2.5 standards.

To achieve the significant emissions reductions necessary for expeditious attainment of federal ambient air quality standards, District staff are actively working on rule development efforts for a suite of rules and projects to be adopted throughout the 2022-2023 period.  Rule development projects will also include an evaluation of District rules to determine whether they meet the State of California Best Available Retrofit Control Technology (BARCT) level of controls, as required under AB 617 and through the adopted Community Emission Reduction Programs. 

District Rules Currently Under Evaluation

Rule Anticipated Action Date
Rule 4402 (Crude Oil Production Sumps) 2023/2024
District Leak Detection and Repair Rules
  • Rule 4401 (Steam-Enhanced Crude Oil Production Wells)
  • Rule 4409 (Components at Light Crude Oil Production Facilities, Natural Gas Production Facilities, and Natural Gas Processing Facilities)
  • Rule 4455 (Components at Petroleum Refineries, Gas Liquids Processing Facilities, and Chemical Plants)
  • Rule 4623 (Storage of Organic Liquids)
  • Rule 4624 (Transfer of Organic Liquid)
Rule 4550 (Conservation Management Practices) 2023

District Rules Recently Adopted/Amended

Rule Action Date
Rules 4460 (Petroleum Refinery Fenceline Air Monitoring) and 3200 (Petroleum Refinery Community Air Monitoring Fees) 2022
Rule 4905 (Natural Gas-Fired, Fan-Type Central Furnaces) 2021
Rule 4354 (Glass Melting Furnaces) 2021
Rule 4352 (Solid Fuel-Fired Boilers, Steam Generators, and Process Heaters) 2021
Rule 4702 (Internal Combustion Engines) 2021
Rule 4311 (Flares) 2020
Rule 4306 (Boilers, Steam Generators, and Process Heaters –Phase 3)

Rule 4320 (Advanced Emission Reduction Options for Boilers, Steam Generators, and Process Heaters Greater than 5.0 MMBtu/hr)
Rule 4692 (Commercial Charbroiling) 2020
2020 Staff Report and Recommendations on Agricultural Burning 2020