Underground Storage Tank (UST) Cleanup Case Proposed Closures

New! UST cases that are currently being considered for closure by Santa Ana Regional Water Quality Control Board (Santa Ana Water Board) staff have been posted for a 60-day public comment period (shown in the table below¹). Comments will be accepted consistent with deadlines stated in the notice for each case.

UST Case Closures proposed for consideration pursuant to State Water Resources Control Board (State Water Board) Resolution No. 2012-0061 are listed in the table below. These are cases that meet the criteria of the Low-Threat UST Case Closure Policy. Comments for a specific case may be submitted prior to the deadline listed in the table below. After the comment period closes, comments received will be reviewed and responses will be issued. If no comments are received for a proposed case closure during the comment period, the closure process will continue.

Some leaking petroleum UST Cleanup case closures may be processed at the State Water Board. A list of these proposed petroleum UST closures can be found by clicking on the following link for State Water Board UST Proposed Closures.

 ¹Proposed case closures posted prior to July 1, 2023 can be found on the site-specific GeoTracker database.

Please direct any questions concerning the UST Program to Maile Gee, Supervisor of the UST/SCP Section, at maile.gee@waterboards.ca.gov and (951) 782-4379.