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Tank Site Improvement Program (TSIP)

TSIP Process Steps

Revised On: Aug. 3rd, 2026 - 05:21 pm

NOTICE: The Tank Site Improvement Program (TSIP) is currently not accepting new applications.

You may still submit reimbursement requests, including requests for reimbursement of suspected release confirmation work. 

You must submit all reimbursement requests using the current ADEQ 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 >