California ICC UST Inspector Practice Exam

An Automatic Tank Gauge must be capable of detecting a release of how many gallons per hour?

1. 0.5

2. 0.2

3. 1.0

4. 2.0

The correct answer is: 0.2

An Automatic Tank Gauge (ATG) is an integral part of the monitoring system for underground storage tanks (USTs), ensuring compliance with safety and regulatory standards. The regulation for leak detection systems, including ATGs, stipulates the minimum requirements for detecting leaks to safeguard both the environment and public health. The correct capacity for a leak detection system, such as an ATG, is established based on the need to promptly identify potentially harmful releases. A detection capacity of 0.2 gallons per hour is set as a standard because it allows for the early identification of leaks before they escalate into more significant issues. This ensures that any product loss is minimized and potential contamination risks are mitigated. Other values provided in the choices also signify leak detection capabilities, but 0.2 gallons per hour is specifically aligned with the regulatory requirements that prioritize environmental protection and effective monitoring. Larger thresholds, such as those indicating 0.5, 1.0, or 2.0 gallons per hour, would not offer the same level of preventative action to catch leaks promptly.