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 Aboveground Storage Tank Program


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A-Z List of Documents

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 Activity Notification Form

AST Foreclosure Form Notice 

AST Registration Form

AST Sampling Guidance

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).

*UPDATE: DNREC finalized amendments to the AST Regulations effective April 1, 2017. The new regulations are available here.

Annual AST Registration Invoices
Invoices are sent to owners each year in December and include both AST Tank Registration and Vapor Recovery Operating Permit Fees. If you are an AST facility owner and have not received an invoice by the end of the calendar year, the Tank Management Section (TMS) should be notified.
Payments are due on or before Feb. 1 of each calendar year. A 10 percent late fee per tank is assessed after that date. If a facility is sold or there is an owner billing address change, the TMS must be notified.

Click here to pay AST Tank Registration and Operating Vapor Recovery Permit Fees

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

  •     SPCC Rule: 40 CFR Part 112 
  •     EPA SPCC Webpage
  •     Streamlined SPCC Rules for Tier I and Tier II Qualified Facilities. The SPCC rule has streamlined requirements for facilities with smaller oil storage capacity - self-certification is now an optional alternative to Professional Engineer (PE) certification of the Plan. The owner or operator of a "qualified facility" can prepare and self-certify a SPCC Plan, rather than have a PE review and certify the Plan.
  •     SPCC Rule for Agriculture Note: May 10, 2013, was the compliance date for farms to prepare or amend and implement their SPCC Plans.
  •     SPCC Facility Response Plan (FRP) Rule

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

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

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