What documentation is required to be kept for UST systems?

The requirement to maintain operation and maintenance manuals, inspection logs, and compliance certificates is essential for Underground Storage Tank (UST) systems to ensure their safe and effective operation. These documents provide crucial information regarding the management and oversight of UST systems, helping to ensure they are consistently compliant with regulatory standards.

Operation and maintenance manuals typically outline the protocols for safely operating and maintaining the UST system, thereby minimizing risks related to leaks or spills. Inspection logs are vital for documenting routine examinations of the system, tracking any irregularities or maintenance needs over time. Compliance certificates are proof that the UST systems meet specific environmental regulations and standards, essential for demonstrating accountability and due diligence in the management of these systems.

In contrast, the other options do not pertain directly to the operational and regulatory requirements of UST systems. Marketing plans and employee files, sales reports, customer feedback, investment portfolios, and financial statements are important for business operations but do not provide the necessary information for the safety and compliance measures specific to UST systems.