California ICC UST Inspector Practice Exam

Which of the following scenarios would not require secondary containment testing?

1. Interstitial space hydrostatically monitored

2. Under-dispenser containment

3. Turbine piping sump

4. Secondary piping

The correct answer is: Interstitial space hydrostatically monitored

Secondary containment testing is crucial in the management and regulation of underground storage tanks (USTs) to ensure that any leaks or spills are contained and do not pose a risk to the environment. In this context, the scenario involving interstitial space being hydrostatically monitored does not require additional testing because the monitoring system itself provides a continuous means of detecting leaks. When the interstitial space is actively monitored, it ensures that any potential breaches in the secondary containment can be detected immediately. Hydrostatic monitoring typically entails the use of liquid levels to detect changes that may indicate a leak, effectively providing a built-in safeguard and continuously verifying containment integrity without the need for periodic testing. In contrast, other options involve physical containment systems or components that could hold fluids and thus require testing to assess their integrity and functionality. For instance, under-dispenser containment, turbine piping sump, and secondary piping are typically considered points where potential leaks could occur, necessitating routine testing to confirm they are functioning effectively and preventing environmental contamination.