California ICC UST Service Technician Practice Exam

If Statistical Inventory Reconciliation is used for a single-walled tank, what must be accomplished every two years?

1. Product replacement

2. A tank integrity test

3. Leak detection analysis

4. Environmental assessment

The correct answer is: A tank integrity test

In the context of underground storage tank (UST) management, especially for single-walled tanks, a tank integrity test must be conducted every two years when Statistical Inventory Reconciliation (SIR) is employed. This requirement ensures that the tank continues to meet safety and environmental protection standards by verifying that there are no leaks or structural failures. The integrity test involves checking the physical condition of the tank and its components, assessing the effectiveness of the leak detection systems, and ensuring compliance with regulatory standards. Since single-walled tanks are more vulnerable to leaks compared to double-walled systems, regular testing is crucial to prevent potential environmental contamination and to protect public health. In comparison, while other options like product replacement or environmental assessments may be relevant in specific scenarios, they are not mandated as a biennial requirement associated directly with SIR for single-walled tanks. Leak detection analysis is also crucial but typically forms part of the overall integrity testing rather than being a standalone requirement every two years.