When must underground storage tanks be upgraded to meet current standards?

The requirement for upgrading underground storage tanks (USTs) to meet current standards stems from regulations aimed at improving environmental safety and preventing leaks that could contaminate groundwater. The date of December 31, 1998, was significant because it marked a deadline for many older tanks that were in operation prior to the enactment of newer UST regulations.

This deadline was established as a part of California's commitment to compliance with federal environmental mandates. Tanks that did not meet the upgraded standards for secondary containment, leak detection, and corrosion protection by this date were deemed a higher risk for leaks, thus necessitating upgrades to comply with the latest safety regulations.

This targeted approach aimed not only to protect public health and the environment but also to ensure that older infrastructure was brought into line with modern safety practices. As a result, meeting the December 31, 1998 deadline was crucial for operators to avoid potential fines or operational restrictions.