Notwithstanding § 39-41-260, or any other provision of law, motor fuel, as defined in § 12-28-110(39), may be dispensed at an unattended service station if the dispensing device has an automatic shut-off valve that is activated when the sale of the motor fuel reaches thirty gallons. In addition, the dispensing device shall be equipped with emergency controls pursuant to Chapter 22, Section 2204.3.3 of the International Fire Code. The service station shall be equipped with a 2A-20B-C fire extinguisher within seventy-five feet of the pump as required in Chapter 22, Section 2205.5 of the International Fire Code.