NOTICE: The Tank Site Improvement Program (TSIP) is currently not accepting new applications for UST removal, replacement, modification, or baseline assessments. 

ADEQ anticipates opening another application round spring 2027.  Updated application forms will be available on the ADEQ website approximately one month prior to the opening of any application period. All applications must be submitted using the spring 2027 updated version of the form, once available. 

To receive notifications of future application periods, sign up to the ADEQ UST email list | Subscribe >

Reimbursement requests, including requests for reimbursement of suspected release confirmation work, may still be submitted. All reimbursement requests must be submitted using current ADEQ forms | View Forms >

Leak prevention activities, also known as noncorrective actions, are proactive measures designed to identify releases and to prevent future releases, which can lead to costly cleanups. Eligible UST owners, operators and property owners may request financial assistance from ADEQ through the Tank Site Improvement Program (TSIP).

Noncorrective actions include UST system removals, baseline assessments and sampling to confirm a suspected release, and UST system replacements and modifications to bring UST systems up to current performance standards.

Tank Site Improvement Program

UST owners, operators, and property owners may apply for funding to assist with UST system removal, replacement and modification to bring their UST systems aligned with current performance standards, baseline assessments and suspected release confirmation actions.¹ Qualifying applicants must complete the approved actions and access approved funds by the statutory deadline. Under this program, the applicant is responsible for acquiring bids, managing the action, paying costs and submitting a request for reimbursement | Learn More >

¹In accordance with Arizona Revised Statutes (A.R.S.), TSIP application funding is subject to the availability of monies in the UST revolving fund that have been allocated to the program | View A.R.S. § 49-1071 >