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Skip Navigation LinksDNREC : Tank Management : Aboveground Storage Tank Program

 Aboveground Storage Tank Program


Requirements for ASTs containing Diesel, Kerosene, or Heating Fuel

Requirements for ASTs containing Regulated Substances other than Diesel, Kerosene or Heating Fuel

Requirements for Agricultural/Farm ASTs

ASTs- Agricultural/Farm -Approved Best Management Practices for ASTs less than 40,000 gallons 

AST Sampling Guidance

AST Registration Form

AST Activity Notification Form



    DNREC-TMS) is currently making revisions to the AST Regulations to clarify areas of the AST Regulations that are not specific in nature, updates to
    technical sections to remain current with technology, and inclusion of new industry standards. The proposed revisions will add clarity and will ensure the
    requirements in the AST Regulations are up to date and in line with current industry practices and standards. The following workshops will be held to
    review the draft AST Regulations, proposed changes and obtain public comment:

  • March 10, 2015       10:00am – 12:00pm         DNREC New Castle Office      391 Lukens Drive, New Castle, DE 19720
  • March 12, 2015         6:00pm – 8:00pm           DNREC Dover Office               89 Kings Highway, Dover, DE 19901
  • March 17, 2015       10:00am --12:00pm          DNREC Lewes Office             901 Pilot Town Road, Lewes, DE 19958
    To view the Draft AST Regulations, please click here.      To view the draft letter to AST Owners & Operators, please click here.  

The Tank Management Section implements the Aboveground Storage Tank (AST) program. The AST program is responsible for ensuring the safe operation of over 1,000 regulated AST facilities in the state. All registered ASTs have to comply with Delaware’s Regulations Governing Aboveground Storage Tank Systems (AST Regulations).The AST program conducts inspections at facilities with AST systems to prevent releases to the environment by ensuring that AST systems are properly installed, inspected, tested, and maintained. The AST program also oversees the cleanup of sites which have had releases from AST systems.

AST systems which are subject to the requirements of the AST program can be found at large manufacturing or industrial facilities, hospitals, bulk plants, office building, fueling locations, or transportation facilities.

Information regarding AST system sites is available online using the Delaware Environmental Navigator (DEN). A request for information may be made through the Freedom of Information Act (FOIA).

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

New! Spill Prevention, Control and Countermeasure (SPCC) Plan information:

Not finding what you need on this page?  Try the A-Z list of tank-related documents!

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