Owners/operators must maintain records of site closure for how long after closure?

Owners and operators of underground storage tanks (USTs) are required to maintain records of site closure for three years after the closure. This requirement is in place to ensure that there is a documented history of the site, which can be crucial for any future investigations, management of residual contamination, or if there are questions regarding the closure process. Maintaining these records helps ensure compliance with environmental regulations and allows for effective tracking and management of potential impacts from UST operations. By keeping these records for a period of three years, it ensures that any potential issues or follow-up actions can be addressed in a timely manner. This practice aids in accountability and transparency in the management of underground storage tanks.