Underground Storage Tank (UST) Program

Underground storage tank system illustration

Tank Site Improvement Program

ADEQ's new Underground Storage Tank Site Improvement Program (TSI) provides financial assistance to Underground Storage Tank (UST) owners, operators and property owners of sites with USTs for specific tank site improvements that help prevent future costly remedial activities.  

Reimbursement Funding Is Available Up to $100,0001 per Facility and Includes:

Learn more about site improvements eligible for reimbursement and help prevent future costly cleanups | Learn More >

Application Information

Applicants are responsible for submitting an application for ADEQ approval, acquiring bids, managing and funding contracted work and submitting costs for reimbursement. Once an application is approved by ADEQ, applicants should complete the ADEQ-preapproved work and request reimbursement as soon as possible and no later than one year.2

Now Accepting Applications! | Steps to Apply >


View the most frequently asked questions about the TSI Program | View TSI Program FAQs >
If you need additional information, contact the UST Outreach Coordinator (see sidebar).