This section has no associated Executive Note
3. The Health and Safety Executive where the development is within an area which has been notified to the planning authority by the Health and Safety Executive for the purpose of this provision because of the presence within the vicinity of toxic, highly reactive, explosive or inflammable substances and which involves the provision of–
(1) residential accommodation;
(2) more than 250 square metres of retail floor space;
(3) more than 500 square metres of office floor space; or
(4) more than 750 square metres of floor space to be used for an industrial process,
or which is otherwise likely to result in a material increase in the number of persons working within or visiting the notified area.