California Designated Operator Practice Exam

The minimum capacity required for spill containers on new underground storage tanks is five gallons. This requirement is based on regulations aimed at preventing spills during the transfer of fuel, ensuring that any potential spillage is safely contained to minimize environmental hazards and contamination. A five-gallon capacity is considered adequate to capture incidental spills that may occur during the refueling process, thus protecting both the environment and public health. Higher capacities, such as ten gallons, are not the minimum requirement but could be utilized in specific instances or for added safety measures. However, they do not represent the baseline standard mandated by regulatory bodies. Significantly lower capacities, such as two or three gallons, would not be sufficient to accommodate the typical volume of liquid that may spill during a transfer, which is why these options do not meet the minimum standards established for spill containment.