Note - The regulations shown here apply to underground storage tanks (USTs) that are greater than 1100 gallons, and are recommended for smaller tanks as well. Check for additional requirements in your state.
REGULATIONS FOR EXISTING USTs: By 22 December 1998, all existing underground storage facilities must comply with one of the following requirements:
Steel tanks must be upgraded with corrosion protection by one of the following methods in accordance with codes developed by a nationally recognized association or independent testing laboratory:
Metal piping that regularly contains product and is in contact with the ground must be cathodically protected according to approved regulations.
All existing underground storage facilities must comply with the new system spill and overfill prevention equipment requirements
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