How many days prior must the DEC be notified before permanently closing a UST system?

The requirement to notify the Department of Environmental Conservation (DEC) 30 days prior to the permanent closure of a UST (Underground Storage Tank) system is rooted in the need for proper regulatory oversight and environmental protection. This 30-day notice period allows the DEC to prepare for the closure process, ensuring that all necessary inspections and compliance measures can be effectively carried out.

Notifying the DEC in advance helps to mitigate potential risks associated with the closure, such as leaks or contamination, by allowing time for the implementation of safety protocols and proper assessments of the site. It also ensures that all regulatory requirements are met and that the closure process adheres to state and federal guidelines, thereby protecting public health and the environment.

The other timeframes do not align with the established regulation; therefore, they would not provide the required notice for compliance.