Iowa Code § 101.12: Aboveground tanks authorized.

1. An aboveground flammable or combustible liquid storage tank may be installed at a retail motor vehicle fuel outlet, subject to rules adopted by the director.

2. Rules adopted by the director pursuant to this section shall be in substantial compliance with the applicable standards of the national fire protection association.

3. The installation of an aboveground flammable or combustible liquid storage tank at a retail motor vehicle fuel outlet shall also be subject to approval by the governing body of the local governmental subdivision which has jurisdiction over the fuel outlet.