Q-2, r. 32 - Regulation respecting hazardous materials

Full text
68. Every underground tank liable to be subjected to overhead vehicular traffic shall be sunk
(1)  to a depth of at least 1 m below ground level, be covered with a layer not less than 90 cm thick of materials referred to in section 67 and a layer of bituminous concrete not less than 10 cm thick; or
(2)  to a depth of at least 45 cm, be covered with a layer of at least 30 cm thick of materials referred to in section 67 and a slab of reinforced concrete not less than 15 cm thick. The slab of reinforced concrete shall extend at least 30 cm beyond the perimeter of the tank.
O.C. 1310-97, s. 68.