Underground Storage Tank Program

The mission of the DEQ's Underground Storage Tanks Program is to protect Oregonian’s right to clean water and all other natural resources by preventing future petroleum UST releases. 

The UST Program handles: 

• Issues related to tank registration and operating certificates
• Installation, operation and removal of USTs, training of system operators
• Financial liability protection for future leaks
• Licensing of contractors working on USTs
• Enforcement of state UST rules

For federal information pertaining to USTs, please refer to the Environmental Protection Agency's Underground Storage Tank page.

Resources at a glance

• Login to Your DEQ Online or Learn how to use the new system. 
• UST Publication Page 
• EPA's Musts for USTs  |  Procedimientos de Cumplimiento de los Tanques Subterráneos de Almacenaje   |  UST के लिए अनिवार्य 
• This 36-page booklet summarizes federal UST requirements for installation, reporting, spill and overfill prevention, corrosion protection, release detection, walkthrough inspections, compatibility, operator training, repairs, financial responsibility, release response, and closure.

New rules webinar

In May, 2025, the Environmental Quality Commission voted to adopt updates to Oregon Administrative Rules Chapter 340, Division 160, the rules that govern the licensing and work of UST service providers and supervisors. These rules came into effect on July 1, 2025. On June 25, DEQ presented a webinar that covers the requirements in the updated rules. There are 3 videos covering this 2½ hour presentation and question and answer session. 

• View the videos