Closing a Fuel Storage Facility

Note - The comments shown here apply to underground storage tanks (USTs) that are greater than 1100 gallons in Indiana, and should be considered for smaller tanks as well. Check for closing requirements in your state.

Indiana requires that UST closure must be performed by individuals certified by the State Fire Marshals Office. During the actual closure, at least one certified person must be on site at all times.

Both types of facilities require the same basic steps for closure, but underground facilities present added concerns due to the excavation required.

Arrangements for a disposal site should be made before excavation because it may take time to finalize an agreement with a disposal site. A site assessment must be conducted to ensure that the facility being closed is not responsible for any contamination. This must be done before completion of closure activities.

A facility may be closed my removing the tank or by filling with inert material.

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