What must owners and operators do if they permanently close their UST system?

When permanently closing a UST (Underground Storage Tank) system, owners and operators are generally required to remove the tank from the ground. This procedure is essential for several reasons, including safety, environmental protection, and regulatory compliance.

Removing the UST ensures that any potential contamination from residual fuel or hazardous substances is effectively addressed. Leaving the tank in place may pose risks such as leaks or corrosion, which could lead to soil and groundwater contamination over time. Furthermore, regulatory authorities often mandate the removal of tanks to minimize the potential for environmental hazards.

In contrast, the options that involve leaving the system in place, filling it with concrete, or disabling it without removal could lead to ongoing liability issues or environmental concerns, which contradicts the objectives of safe and responsible UST system management. Thus, removing the UST entirely aligns with best practices in ensuring public and environmental safety when the system is no longer in use.