California Designated Operator Practice Exam

What should a monitoring program for underground storage tanks include regarding interstitial space detection?

1. Visual inspection only

2. Continuous monitoring with an alarm system

3. Monthly manual checks

4. Random sampling of the area

The correct answer is: Continuous monitoring with an alarm system

A monitoring program for underground storage tanks should prioritize the safety and environmental protection provided by continuous monitoring with an alarm system. This approach ensures that any potential leaks or breaches in the interstitial space, which is the area between the inner and outer walls of the tank, can be detected in real time. Continuous monitoring can provide immediate alerts if there are any abnormalities or changes in the conditions that could indicate a leak, allowing for prompt action to be taken to mitigate potential risks to the environment and public safety. Visual inspections and monthly manual checks may not be sufficient, as they can miss leaks or issues that occur between the scheduled inspections. Random sampling lacks the systematic approach required for ongoing vigilance, which is crucial for preventing hazardous leaks. Continuous monitoring, therefore, stands out as the most effective method to ensure the integrity of underground storage tanks and provide a proactive response to safety and environmental concerns.