How long should as-built drawings or photos of underground piping be maintained according to PEI RP300?

• A. Indefinitely
• B. For at least 5 years
• C. For at least 10 years
• D. As long as the UST is in service

Answer: (D)

As-built drawings or photos of underground piping should be maintained for as long as the underground storage tank (UST) is in service. This requirement is crucial for ensuring safety and compliance in environmental management. Maintaining these records allows for effective inspections, maintenance, and repairs to be conducted on the UST system. In the event of a leak or failure, having access to accurate as-built documentation is essential for understanding the configuration and condition of the piping, which can significantly aid in troubleshooting and remediation efforts.

Having these records available during the operational life of the UST ensures that any modifications, upgrades, or issues can be properly addressed with the correct historical context, and contributes to overall risk management. Thus, the longevity of these records aligns with the operational integrity and environmental safety associated with USTs.