NOTICE: The Tank Site Improvement Program (TSIP) will be accepting application submissions from June 15, 2026, to 5 p.m. on July 31, 2026. 

Only applications received during this timeframe will be accepted for review and prioritization. 

All submissions must be on the appropriate forms | View Forms >

The following steps outline the application and reimbursement process. Need help? Contact the Community Outreach Coordinator — we are here to help (see sidebar).

The process starts when ADEQ has announced an Application Submission or Prioritization Period. This announcement will inform you of the timeframe to submit a TSIP application. All applications must be on the current ADEQ forms. 

Step 1

The applicant prepares and submits the appropriate TSIP application by the submission period deadline | View Forms >

• Verify the information included in your application is correct and complete.
  • You can verify ADEQ’s records for your facility’s address on the Underground Storage Tank (UST) Database | View UST Database >
  • You can verify your company name through Arizona Corporation Commission’s (ACC's) online database | View ACC Database >
  • If applicable for the category of work, you can verify that your ADEQ-certified UST service provider is able to do the proposed work | View Service Provider Listing >
  • If applicable for the category of work, you can verify that your environmental professional has a valid Arizona registration | Licensee Search >
• Check the prioritization score for your facility using the prioritization worksheet | View Worksheet >
• Consider soliciting and evaluating multiple bids to ensure the work being done is a reasonable cost.
• Applicants must be registered in the State’s procurement system to receive reimbursement. To learn more about registration, see: 
  • Arizona Procurement Portal (APP) | View APP >
  • APP’s Help Desk Number: 602-542-7600
• Step-by-step registration guides | View Step 1 > | View Step 2 >

Step 2

ADEQ reviews the applications and prioritization information

• Applications are reviewed to determine eligibility and completeness of necessary information for processing.
• After all applications have been reviewed, applications are ranked by highest priority.
• Funding determinations for applications are issued.

Step 3

The applicant completes the approved actions

• Applicants are responsible for ensuring that all work conducted will meet regulatory requirements.
• If unexpected site conditions are encountered while performing the approved work, notify ADEQ by email | Email >
• We must preapprove any change in the scope of work for costs to be eligible for reimbursement.
• We recommend qualifying applicants complete the work as soon as possible. Work conducted after 545 days from the date of application approval will not be reimbursed.

Step 4

The applicant submits all regulatory reports applicable to work conducted

Step 5

The applicant submits a reimbursement request

• Use the current form with all necessary attachments.
• Reimbursement requests must be submitted within one year of completing the work.
• Applicants may sign up for Direct Deposit through Automated Clearing House for faster payment (recommended).

Step 6

ADEQ reviews the reimbursement request and determines approvable funds

• Reimbursement request is reviewed.
• Processing may be delayed if the reimbursement request does not include all necessary information.

Questions? | View TSIP FAQs >