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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

NOTICE: Draft Aboveground Storage Tank (AST) Regulations
DNREC Tank Management Section 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. To review:

  • the Draft AST Regulations, please click here;
  • list of changes, please click here; and
  • 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.

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

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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