California ICC UST Inspector Practice Exam

Under what condition may the local agency waive the requirement for overfill prevention equipment?

1. When the tank inlet is not observable

2. When the tank system is filled by transfers of no more than 10 gallons

3. When the tank system is filled by transfers of no more than 25 gallons

4. When the spill container has a capacity of five gallons

The correct answer is: When the tank system is filled by transfers of no more than 25 gallons

The local agency may waive the requirement for overfill prevention equipment when the tank system is filled by transfers of no more than 25 gallons. This provision is in place primarily to reduce the risk of overfilling in small-volume transfers, which are less likely to result in significant spills or environmental impact compared to larger volumes. Essentially, for small amounts such as those not exceeding 25 gallons, the risk associated with overfilling is considered manageable, and monitoring can be reasonably achieved through manual observation or immediate responses by personnel conducting the transfer. By allowing this waiver, regulatory bodies aim at balancing safety requirements with practical operational considerations, particularly for smaller facilities that may not have the same infrastructure as larger operations. This approach is consistent with existing regulations that delineate specific conditions under which certain standards can be adjusted to meet operational realities while still maintaining adequate environmental protection.