DEEP: Underground Storage Tanks

Underground Storage Tanks (USTs)

Alternate Life Expectancy for Certain Underground Storage Tanks
On June 22, 2016, pursuant to section 22a-449(d)-111(d) of the Regulations of Connecticut State Agencies (RCSA), the Commissioner of Energy and Environmental Protection issued an Approval of an Alternative Life Expectancy For Certain Underground Storage Tanks (Approval).  For underground storage tanks (USTs) subject to RSCA section 22a-22a-449(d)-101 et seq., that satisfy eligibility criteria and certain terms and conditions, this Approval extends the life expectancy of a tank to forty (40) years from the date of installation. Prior to this approval most USTs had a life expectancy of 30 years.
Eligible USTs that meet the terms and conditions of the Approval must send a Notice of Alternate Life Expectancy for USTs to the department. Also available in PDF.
If you need assistance in determining if your USTís are eligible for this extension, or it is in your interest to meet and maintain the terms and conditions to maintain eligibility, it is recommended you consult with your UST equipment service provider, fuel supplier, or industry group.

 Paperless forms are required with DEEP's ezFile!



First Time Users:

  • Set up User Accounts with usernames and passwords
    (Creating your ezFile Acct Tutorial) for
    • Owner/Operator
    • Subscribers
    • Class A and Class B Operators
    • Tank Installers.
  • Create a Subscriber Agreement (SA) electronically in ezFile. (SA Tutorial)
  • Print Subscriber Agreement (SA).
  • Get "wet" signatures on Subscriber Agreement. (Owner/Operator and any Subscribers)
  • Mail Subscriber Agreement to DEEP and wait for email approval.
  • Complete your Notifications and have them ready to file beginning August 1st.
Returning Users:
  • Log into ezFile with your username and password.
  • Select approved facility filings and renew, making any required changes.
  • Create new filings for facilities not previously submitted through ezFile.
  • Submit Notification and Fee Payment between August 1st and October 10th.

For questions or assistance regarding ezFile, please contact the Storage Tank Enforcement Unit at 860-424-3374 or e-mail Moises Torrent at

Public Act No. 15-1 requires all communication with the DEEP to be electronic.  An exception must be granted by DEEP for any paper notification.  This exception must be requested by completing the Hardship Request form, DEEP-UST-Paper Filing-Hardship Request Form.

UST Notification, Compliance and Release Prevention

Content last updated July 2016