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Underground Storage Tank (UST) Program

INFORMATION ON ABANDONED STORAGE TANKS

Abandoned UST Initiative

Underground storage tanks (USTs) are considered abandoned when regulated substances are no longer stored within those USTs and/or when monitoring requirements of the Operating Permit, Title 23 of California Code or Regulations, and California Health and Safety Code 25298 are not being implemented. Various risks can arise from abandoned USTs when they are not properly closed in place such as the possibility of leaked hazardous substances and contamination to the environment. Therefore it is important that sites with (possible) presence of abandoned USTs be addressed in order to avoid the consequences.

From April 2013 to November 2016, the California State Water Resources Control Board (State Water Board) and the U.S. Environmental Protection Agency (U.S. EPA) worked to address 327 abandoned UST sites across the State of California, in close collaboration with local Unified Program Agencies (UPAs).

In a letter to the UPAs dated April 2017, the State Water Board provided guidance on the regulation and inspection of abandoned tanks. Additional information on abandoned tanks can be found the the State Water Board FAQ page.

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ABANDONED UST INITIATIVE REPORTS

RESOURCES FOR ABANDONED UST

ABANDONED UST MEDIA COVERAGE

 

To report an abandoned UST, contact the appropriate Unified Program Agency.

 

(Updated 5/1/17)