8.125. A remote intake end of a fill pipe referred to in section 8.124 from an underground tank must be located lower than other outlets from the tank, unless the tank(1) is a tank with an overfill protection device that meets CAN/ULC-S661, Standard for Overfill Protection Devices for Flammable and Combustible Liquid Storage Tanks, published by Underwriters’ Laboratories of Canada, adapted so as to include in the tank the volume of petroleum product that could be contained in the fill pipe without exceeding the maximum filling level of the tank as specified in the Standard; or
(2) is a tank with a backflow device inside the piping connected to other openings.