As of 1998, what is the minimum capacity for which spill buckets are required for UST/AST systems?

The requirement for spill buckets in Underground Storage Tank (UST) and Aboveground Storage Tank (AST) systems is established to prevent environmental contamination from spills during the transfer of liquid products. As of 1998, the established minimum capacity for spill buckets is 25 gallons. This capacity is deemed important as it is large enough to contain any potential accidental spills during the filling process, thereby minimizing the risk of leaks into the surrounding environment.

Choosing 25 gallons as the minimum is significant because it strikes a balance between being adequately sized to handle typical spills that might occur during transfer operations and manageable enough to install and maintain within the confines of UST/AST systems. Spill buckets that meet this capacity standard ensure that operators have a reliable safeguard to protect against spills, hence supporting the overall integrity of the UST/AST systems and compliance with environmental regulations.