3. For the purpose of paragraphs 1 and 2, where separate applications are made to operate different parts of a Part A installation–
(a)the date by which applications have been made in relation to all parts of the installation shall be treated as the date on which an application for a permit to operate the installation is made;
(b)an application for a permit to operate the installation shall only be treated as having been duly made if each of the separate applications are duly made;
(c)the determination date for the installation shall be, in relation to each part of the installation which is covered by a separate application, the determination date for that part of the installation.