No person shall install or maintain any stationary gasoline tank at a retail service station with a capacity of 260 gallons or more which is not equipped for loading through a permanent submerged fill pipe.
 

901.1 Exemptions to Subdivision 901.1:

1. Storage tank that is a pressure tank, floating roof tank, or tank equipped with a vapor recovery system.
2. Storage tanks used exclusively for fueling implements of husbandry, and if they have a capacity of 550 gallons or less.