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 Tank Management Section


The Division of Waste and Hazardous Substances' Tank Management Section (TMS) regulates the installation, operation, maintenance, and closure of Underground Storage Tank and Aboveground Storage Tank (UST and AST) systems in order to prevent contamination of soils and groundwater. The staff also permits the installation and operation of Vapor Recovery (VR) equipment, inspects Boilers and Pressure Vessels to protect public safety, and oversees the cleanup of releases from both UST and AST systems. The TMS prevents leaks to the environment by conducting inspections at regulated UST and AST facilities to ensure equipment is properly installed and maintained. These inspections take place at different types of facilities including gas stations, facilities that have large tank systems, and industrial or manufacturing sites located in Delaware. The TMS Program Manager is Alex Rittberg. He can be reached at 302-395-2500. The TMS office is located in DNREC's Lukens Drive Field Office building at: 391 Lukens Drive, New Castle, DE 19720 (Map & Driving Directions).    

UPDATESenate Bill 233 with proposed changes to Delaware's Regulations Governing Aboveground Storage Tanks was signed by Governor Jack Markell on July 13, 2016. For more information on the legislation and changes to the regulations, please visit:

NOTE: Comments on the Draft Regulations Governing Aboveground Storage Tanks can be emailed to and will be accepted until Wednesday, July 27.

New!! UNDERGROUND STORAGE TANK ADVISORY COMMITTEE- DNREC is forming a new underground storage tank advisory committee and will hold the first meeting on Oct. 26th from 10:00am to 12 noon.  The purpose of the meeting is to exchange ideas with, and solicit feedback from, stakeholders on environmental matters concerning underground storage tanks in Delaware. The meeting will take place at DNREC - Lukens Drive Offices, Conference Room A, 391 Lukens Dr., New Castle, DE 19720.  For additional information, or to RSVP for the meeting, please contact Alex Rittberg at 302-395-2500, or by email at:  For more information on the event, please visit:

ADVISORY: Effective Feb. 11, 2016, amendments were made to Administrative Code 1351: Regulations Governing Underground Storage Tank Systems (UST Regulations) or printable version. The amendments address changes to the cleanup liability associated with a release from a UST. The amendments to the regulations are found in Part E, Sections 6 and 7 of the UST Regulations. The 2016 UST Regulations can be found here. A fact sheet for owners and operators of UST facilities that explains the changes to cleanup liabilitycan be found here. A PowerPoint presentation that describes the changes can be found here.  For questions regarding the amendments to the UST regulations, please contact Alex Rittberg, Administrator, Tank Management Section, by email at: or by phone at (302) 395-2500.

UST CLOSURE ASSISTANCE: DNREC's Heating Fuel Underground Storage Tank Closure Assistance Program for heating fuel UST systems of 1,100 gallons or less used to store fuel to heat the premises where they are located.


Quick links for frequent users:

UST Program AST Program
Underground Storage Tank Owner/Operator                    Financial Responsibility/Insurance
Homeowner Realtor


UST Operator Training
View Scanned Facility Files A-Z List of Documents
Contractor Information

To report a release, please call: 1-800-662-8802

The Tank Management Section also oversees or conducts the investigation and clean up of petroleum and chemical contamination when spills and releases occur on properties with UST or AST systems. The TMS maintains and makes available upon request information stored in paper files and electronic databases relating to USTs, ASTs, and Boilers. Additionally, the TMS provides financial assistance through various programs for the removal of tanks and required cleanup. This includes managing the use of state funds dedicated to the removal and cleanup of UST systems where the owner cannot be found, refuses to perform the work, or does not have the ability to pay.

The Boiler Safety Program is also part of the TMS, ensuring public safety in all public and municipal buildings through inspections of boilers and pressure vessels and by providing education on the operation, maintenance, and repair of boilers and pressure vessels in the State of Delaware.

The TMS staff provides outreach and education by phone, newsletter, website, and presentations to specific groups regarding program activities and requirements.   

To sign up for the Tank Management Section's ListServe, please send a blank email to: 

For more information on the Tank Management Section's Notification and Soil Sampling Guidance, effective Oct. 1, 2012, please visit: Think Tank


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