Underground Storage Tank
OWNERS/OPERATORS OF SINGLE-WALLED USTS
IMPORTANT INFORMATION: Single-walled underground storage tanks (USTs) must be permanently closed by December 31, 2025. This requirement includes both single-walled tanks and nonexempt single-walled piping per California Health and Safety Code, chapter 6.7, section 25292.05. Single-walled UST systems that are not permanently closed by December 31, 2025 will be out of compliance and cannot be operated. Owners and/or operators will be subject to enforcement actions, including affixing red tags and pursuing civil penalties beginning January 1, 2026. For more information, please see the following Single Walled webpage.
Proposed Closure of Underground Storage Tank (UST) Cases
UST cases that are being considered for closure by either the State Water Resources Control Board or the Executive Director have been posted for a 60-day public comment period.
Comments will be accepted consistent with deadlines stated in the notice for each case.UST Case Closures being proposed for consideration by the State Water Resources Control Board (State Water Board) at a future board meeting are listed below.
These are primarily UST cases that meet closure criteria under the decisional framework in State Water Board Resolution No. 92-49 and other Board orders.
List of Case Closures Proposed for Consideration by the State Water Resources Control Board
Note: Email comments for the above Case Closures to: commentletters@waterboards.ca.gov
UST Case Closures proposed for consideration by the Executive Director pursuant to State Water Board Resolution No. 2012-0061.
These are cases that meet the criteria of the Low-Threat UST Case Closure Policy. After the comment period, if the Executive Director determines that a case should be considered by the State Water Board, it will be noticed for a future board meeting.
List of Case Closures Proposed for Consideration by the Executive Director
Note: Email comments for the above Case Closures to: USTClosuresComments@waterboards.ca.gov.
UST Case Closure Review Denials and Approved Orders.
List of Closure Review Denials and Approved Orders
UST Case Closure Proposed For Consideration by the State Water Resources Control Board
Claim No. / Case No. |
Deadline to Receive Comments 12 Noon |
Site Name |
Site Address |
Documents |
Written Comments Received |
Orders |
Uniform Closure Letter Signed |
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UST Case Closure Proposed For Consideration by the Executive Director
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Claim No. / Case No. |
Deadline to Receive Comments 12 Noon |
Site Name |
Site Address |
Documents |
Written Comments Received |
Closure Denials and Approved Orders Closure Cases Approved/Denied Page |
Uniform Closure Letter Signed Closure Cases Approved/Denied Page |
---|---|---|---|---|---|---|---|
Case No. 083300247T | 2025/21/02 | Mobil #18-D8H | 8690 California Ave, Riverside, CA 92504, Riverside County |
Notice, Draft Final Order, Summary |
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Case No. H05549-003 | 2024/10/18 | Oceanside Golf Course | 825 Douglas Drive, Oceanside, San Diego County |
Notice, Draft Order, Summary |
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Case No. 083003428T | 2024/08/18 | Stop N Shop | 1198 W Ball Rd Anaheim, CA 92802 Orange County |
Notice, Draft Order, Summary |