California UST System Operator Practice Test

The requirement for notifying the EPA before permanently closing underground storage tanks (USTs) is established to ensure proper decommissioning procedures are followed and to allow for any necessary inspections or oversight. Owners and operators must notify the EPA at least 30 days prior to the permanent closure of USTs. This timeframe is crucial because it enables regulatory agencies to monitor the closure process, assess potential environmental impacts, and ensure compliance with all federal and state regulations. This notification process allows for a thorough review, especially in cases where the USTs may have implications for soil and groundwater safety. By providing a 30-day notice, the agency can coordinate with the owners and operators to ensure that all measures are in place to address any potential risks associated with the removal or closure of the tanks.