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. (shown in the tables below) 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 (first table below)

    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 (second table below)

    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

    UST Case Closure Proposed For Consideration by the State Water Resources Control Board
    Claim No. / Case No.
    (Sortable)    		 Deadline to Receive Comments
    12 Noon
    (year/mo/day)
    (Sortable)    		 Site Name
    (Sortable)    		 Site Address
    (Sortable)    		 Documents
    (Not Sortable)    		 Written Comments Received
    (Sortable)    		 Orders
    (Sortable)    		 Uniform Closure Letter Signed
                   

    UST Case Closure Proposed For Consideration by the Executive Director

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    UST Case Closure Proposed For Consideration by the Executive Director
    Claim No. / Case No.
    (Sortable)    		 Deadline to Receive Comments
    12 Noon
    (year/mo/day)
    (Sortable)    		 Site Name
    (Sortable)    		 Site Address
    (Sortable)    		 Documents
    (Not Sortable)    		 Written Comments Received
    (Sortable)    		 Closure Denials and Approved Orders
    Closure Cases Approved/Denied Page    		 Uniform Closure Letter Signed
    Closure Cases Approved/Denied Page
    Case No. 083000298T" 2024/09/13 Norco Delivery Service, Inc. 1555 South State College Boulevard, Anaheim, Orange County Notice,
    Draft Order,
    Summary     		     
    Case No. 97UT021 2024/08/30 Newport Mesa Unified School District 2985A Bear St, Costa Mesa, CA 92626 Notice,
    Draft Order,
    Summary     		     
    Case No. 41-1310 2024/08/16 Bella Mangiata Restaurant 233 Baldwin Ave, San Mateo CA 94401-3914 Notice,
    Draft Order,
    Summary     		     
    Case No. 083002006T 2024/08/09 Pennzoil/Quaker State Facility 336 E. Santa Fe Avenue, Fullerton, CA 92632 Notice,
    Draft Order,
    Summary     		     
    Case No. 86UT178 2024/08/09 Mobil #18-H9N 1199 S Beach Boulevard, La Habra, CA 90631 Notice,
    Draft Order,
    Summary