### B-1.1, r. 2 - Construction Code

8.31. An underground tank likely to be subjected to overhead vehicular traffic must be sited
(1)  at a depth not less than 1 m below ground level, be covered with not less than 900 mm of a backfill material referred to in section 8.33 and be covered with not less than 100 mm of bituminous concrete; or
(2)  at a depth of not less than 450 mm, be covered with at least 300 mm of a backfill material referred to in section 8.33 and be covered with a reinforced concrete slab not less than 150 mm thick; the slab must also extend at least 300 mm horizontally beyond the perimeter of the tank.
O.C. 220-2007, s. 1.