On June 20, 2019, the District Board of Directors amended District Rules 361 and 342.
Beginning on January 1, 2020, these rule revisions require all newly installed and modified units to meet the ultra-low oxides of nitrogen (NOx) emission standard. See the amended rules for the emission limits for each fuel type.

Rule Number

Rule Title

Adoption / Amended Date

Rule 342Boilers, Steam Generators, and Process Heaters (5 MMBtu/hr and greater)June 20, 2019 – Amended
Rule 361Boilers, Steam Generators, and Process Heaters (Between 2 – 5 MMBtu/hr)June 20, 2019 – Amended
Rule 1304Part 70 Operating Permits – Issuance, Renewal, Modification and ReopeningOctober 18, 2018 – Amended
Rule 360Boilers, Water Heaters, and Process Heaters (0.075 – 2 MMBtu/hr)March 15, 2018 – Amended

For past rulemaking documents, please see the Past Workshops and Hearings page.

For questions associated with this page, please call the Rules section at (805) 961-8800 or email us at [email protected].