You will need to notify the agency if you are in control or management of an underground, partially underground or fully mounded tank that was used to store flammable gases / liquids, which:
- has not been used in the past 2 years
- has ceased operation and will not be used to store flammable gases / liquids in the future.
The tank / storage system must be:
- removed, if reasonably practicable
- made safe with no risk to health and safety if removal is not reasonably practicable.