What is the significance of a leak detection system in USTs?

The significance of a leak detection system in underground storage tanks (USTs) lies in its critical role in identifying leaks early, which helps prevent environmental contamination. These systems are designed to monitor for any unauthorized releases of fuel or other hazardous substances from the storage tank. By detecting a leak promptly, it allows for immediate remediation actions to be taken, thereby significantly reducing the risk of soil and groundwater pollution. This proactive measure is essential not only for protecting the environment but also for complying with regulatory requirements aimed at safeguarding public health and safety.

While the other options—ensuring proper tank filling procedures, tracking fuel inventory levels, and enhancing fuel transfer efficiency—are important aspects of UST management, they do not directly address the primary purpose of a leak detection system. Such systems specifically focus on leak prevention and environmental protection, making option C the correct answer.