Many consultants are confused about the correct way to refer to the Ontario regulation on contaminated sites and records of site condition. As one wrote,
In fact, this is a widespread fallacy. No, the correct reference is still O.Reg. 153/04. O. Reg.511/09 amended O.Reg.153/04, it did not replace it, even though the Soil, Ground Water and Sediment Standards for Use under Part XV.1 of the Environmental Protection Act, April 15, 2011 replaced the 2004 standards.