63. Steel underground tanks that are not protected against corrosion by one of the systems referred to in section 61 must be removed from the ground.
Despite the foregoing, an unprotected tank installed before 1 December 1997 need not be removed immediately from the ground if the assessment of the state of the tank is in zone 2, 3 or 4 of the graph of Schedule 7. In that case, the removal of the tank and the necessary interventions are to be made according to the methods provided for in subparagraphs 2 to 4 of paragraph 3 of that Schedule.
O.C. 1310-97, s. 63; O.C. 677-2013, s. 2.