• When a tank system or secondary containment system has had a leak or spill, or becomes unfit for use, it must be taken out of operation immediately.

When a tank system or secondary containment system has had a leak or spill, or becomes unfit for use, it must be taken out of operation immediately, and the owner or operator must follow release response requirements.

The following release response steps apply even if the release has been contained by the tank’s secondary containment system. Release response steps include:

• Determine the cause of the release.
• Remove any remaining waste from the tank or secondary containment system within 24 hours or at the “earliest practicable time.”
• Prevent further releases to the environment.
• Remove and properly dispose of any contaminated media.
• Immediately notify the National Response Center (800) 424-8802 and the state implementing agency (unless the release is exempted under 264.196(d)(2) and 265.196(d)(2).)
• Submit a follow-up report to the National Response Center and the state within 30 days.
• Repair the tank or secondary containment system or close the tank or secondary containment system so they can no longer be used.
• Have an independent, qualified, registered professional engineer certify any major repairs (264.196(f) and 265.196(f)).