(1) a tank with a capacity of 50,000 litres or less that meets the following requirements:(a) it has an overfill protection device that meets the requirements of CAN/ULC-S661, Standard for Overfill Protection Devices for Flammable and Combustible Liquid Storage Tanks, published by Underwriters’ Laboratories of Canada, and a containment device with a capacity of at least 15 litres that meets the requirements of CAN/ ULC-S663, Standard for Spill Containment Devices for Flammable and Combustible Liquid Aboveground Storage Tank, published by Underwriters’ Laboratories of Canada;
(b) it meets one of the standards referred to in paragraphs 2 to 4 of section 8.24 or, in the case of a double-walled tank, the standard referred to in paragraph 1 of that section;