3.18.5. Requirements following demolition: The following measures shall be taken after demolition:a) cellars and excavations shall be rendered inaccessible to the public by protective walls, unless they have been completely backfilled to grade;
b) streets, sidewalks or public roads shall be free from all temporary obstruction required by the work and shall be returned to their original state; and
c) the demolition site shall be left in such condition that no accident, fire or health hazard has been created.