Underground Storage Tank (UST) Program

Underground storage tank system illustration

UST Plan Review (Installation, Modification & Closure)

As of Feb. 1, 2017, ADEQ has taken over plan reviews for installation, modification and closure of underground storage tanks (USTs). UST Plan reviews help ensure that work performed on UST systems meets regulatory and compatibility requirements and is done in accordance with Arizona Revised Statutes1 and Arizona Administrative Code.2 

What Do I Need to Submit for a UST Plan Review?

To submit a plan for review:

  1. Register for an account in myDEQ, ADEQ's online portal, to submit UST Plan Review information | Learn More >
  2. Include a site map as described in the Guidelines for UST Plan Review Submittals | Download Guidelines >
  3. Ensure an ADEQ-certified service provider is used to perform work on the UST system.
  4. Provide all UST Plan Review information and attachments at least 30 days before beginning the installation, the tank system modification, and permanent closure or a change-in-service.
  5. Once you receive plan review approval, schedule an inspection by emailing [email protected] at least 30 days in advance for installation tank set and closures and at least 14 days in advance for modifications and subsequent installation inspections.

Guidelines for UST Plan Review Submittals | Download >
UST Plan Review submittals for installation, closure and modifications (general and lining) are all available in myDEQ | Learn More >

Is There a Fee for the UST Plan Review?

Currently, ADEQ does not have authority to charge for UST plan reviews but is investigating regulatory options for assessing fees. In the meantime, ADEQ will conduct UST plan reviews free of charge and track administrative costs to determine if a fee will be necessary to sustain personnel resources dedicated to this service.