Permitting Update on Aboveground Storage Tanks and South Coast AQMD Rule 463 (August 27, 2025)

Recent amendments to Rule 463 have introduced new requirements for aboveground storage tanks (ASTs). Some of the new requirements may not be feasible for certain ASTs storing and dispensing gasoline. South Coast AQMD will be initiating rulemaking to resolve the matter. To ensure permit applications are evaluated against appropriate regulatory requirements and to avoid potential compliance issues following project approval, we have temporarily paused processing any permit applications or accepting new permit applications for ASTs affected by these future amendments, until they are approved by the Governing Board.

For questions or the most up-to-date information on Rule 463, please contact Air Quality Specialist Jennifer Wang at jwang@aqmd.gov or 909-396-3098, in the Planning, Rule Development, and Implementation division.

• No. 2025-01 - June 25, 2025 (PDF, 262kb)
  For owners and operators of gasoline dispensing facilities who need to modify their active South Coast AQMD permits to comply with the State Water Resources Control Board deadline of December 31, 2025.

• No. 2024-01 - January 24, 2024 (PDF, 310kb)
  For owners and operators of gasoline dispensing facilities seeking new or modified Permits to Construct/Operate.
  
  

Other Notices

• Online Permitting & Payment Unavailable June 27 & June 30 - June 13, 2025 (PDF, 121kb)
• Important Notice to all Owners/Operators of RECLAIM Equipment Subject to the Carbon Monoxide Requirements of South Coast AQMD Rules 1146 and 1146.1 (PDF, 199kb)

For advisories related to compliance requirements, please visit Compliance Advisories.