8.64. A contractor or owner-builder may not install a tank used to store a Class 1 petroleum product, except if access to the roof of the tank and to the shut-off valve controls is situated higher than the height of the dike if(1) the height of the dike exceeds 3.5 m; or
(2) the distance between the tank and the top inside edge of the dike wall is lower than the height of the dike.