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Underground Storage Tanks

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If you own, or are responsible for, an Underground Storage Tank (UST), you must submit the following forms Annually in CERS:

  1. UST Monitoring and Response Plans
  2. UST Response Plans
  3. Change in Owner Form

These forms are located on the State Water Board's website HERE.


An underground storage tank (UST) is defined by law as "any one or combination of tanks, including pipes connected thereto, that is used for the storage of hazardous substances and that is substantially or totally beneath the surface of the ground" (certain exceptions apply).

The purpose of the UST Program is to protect public health and safety and the environment from releases of petroleum and other hazardous substances from tanks.

For more information, please refer to the State Water Resources Control Board's website.