What is the minimum size for an earthen berm in fuel storage?

The minimum size for an earthen berm in fuel storage is designed to contain potential spills or leaks from the storage tanks. An earthen berm acts as a secondary containment system to ensure that any accidental release of fuel is contained within the bermed area, preventing environmental contamination and fire hazards.

Choosing 1.5 times the contents of the storage tank as the minimum size is appropriate because it allows for a substantial safety margin. This calculation considers potential overfilling and the dynamic factors, such as changes in temperature that may affect the volume of the stored fuel, as well as the potential for precipitation that could add to the liquid volume within the berm. The additional half capacity ensures that there is enough space to contain spills effectively without risking overflow or spreading to unintended areas.

By following the guideline of 1.5 times the tank's capacity, operators can minimize risks associated with fuel storage and comply with environmental regulations that aim to protect soil and water resources.