3(1)The enterprises, activities, projects, structures, works or programs specified in Schedule A are designated by this Regulation as enterprises, activities, projects, structures, works or programs that may, in the opinion of the Lieutenant-Governor in Council, result in a significant environmental impact.

3(2)The enterprises, activities, projects, structures, works or programs specified in Schedule A, and any modification, extension, abandonment, demolition or rehabilitation of them are undertakings for the purposes of this Regulation.

3(3)The undertakings with respect to which this Regulation applies include any undertaking which is a modification, an extension, an abandonment, a demolition or a rehabilitation of an undertaking commenced before the coming into force of section 31.1 of the Act.