2. Any description of a process includes any other process carried on at the same location by the same person as part of that process; but this rule does not apply in relation to any two or more processes described in different sections of Schedule 1 which, accordingly, require distinct authorisation. For the purposes of this paragraph, two or more processes which are described in Part A of different Sections of Chapter 4 of Schedule 1 shall be treated as if they were described in the same section.