What are the primary components of a UST system?

The primary components of a UST (Underground Storage Tank) system encompass several critical elements necessary for the safe and effective storage of liquids, primarily petroleum products. The correct answer highlights the importance of the tank itself, where the fuel is stored, along with the piping systems that connect the tank to the dispensing equipment. Containment is vital for preventing leaks and spills, ensuring environmental protection and regulatory compliance. Monitoring systems are essential for detecting leaks, monitoring inventory levels, and ensuring the system operates safely and effectively.

These components work together to provide a secure and regulated method for storing hazardous substances underground, adhering to safety standards and facilitating proper maintenance. This comprehensive view is crucial for UST operators to ensure they can manage the systems efficiently and meet regulatory requirements. The other options do not encapsulate the breadth of components necessary for a complete and functional UST system, focusing instead on more limited or unrelated aspects.