Underground Storage Tank (UST) Program

Underground storage tank system illustration

Tank Site Improvement Program

NOTICE: At this time, the Department is no longer accepting applications because all monies have been awarded for fiscal year 2021. The State Lead Noncorrective Action Program (NCA) and Tank Site Improvement Program (TSIP) programs are available to the extent monies are allocated from the UST revolving fund on an annual basis.

ADEQ's Underground Storage Tank Site Improvement Program (TSIP) 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 cleanup activities.  

Site improvements eligible for reimbursement | Learn More >

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 year2 | Steps to Apply >

Reimbursement Funding Is Available Up to $300,000 per Facility and Includes:

  • Up to $200,000 per site for UST system replacement 
  • Up to $40,000 per event for baseline assessments
  • Up to $25,000 per tank for UST removal and up to $15,000 per site for over-excavation of petroleum contamination, if required 
  • Up to $20,000 per event for suspected release confirmation sampling 


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