Special provision for Use Groups F, G and H
8.  Where any land is intended to be developed for a purpose falling within Use Group F, G or H or the land is zoned in the 1958 Master Plan or, where applicable, the 1982 Master Plan, for a purpose falling within any of those Use Groups, the formulae in rules 3 and 4 shall apply as if all references in that formulae to floor area were substituted with references to the land area of the land.