California ICC UST Inspector Practice Exam

When is an inspection required for a UST that is placed into temporary closure?

1. At least once every month

2. At least once every 2 months

3. At least once every 6 months

4. At least once every 3 months

The correct answer is: At least once every 3 months

For a UST (Underground Storage Tank) that has been placed into temporary closure, inspections are mandated to occur at least once every three months. This requirement is in place to ensure that the tank remains in a safe and compliant condition, even while not in active use. During these inspections, various aspects of the UST system are evaluated, including monitoring for leaks or any environmental impacts that may arise from the tank being out of service. Regular inspections help to identify any issues early on, safeguarding public health and the environment, as well as ensuring compliance with regulatory standards. While other intervals such as monthly, bi-monthly, or semi-annual inspections may seem plausible, they do not align with the specific regulation governing temporary closures. This regulation is designed to balance oversight with the reduced risk associated with tanks not in use, thereby establishing a three-month inspection cycle as both practical and effective. This is why the three-month inspection period is prescribed as the correct timeframe for inspections of temporarily closed USTs.