Regulation 4 Notification
The person in control of a site shall, subject to regulation 10(1), ensure that there is not present at any one time a total quantity of 25 tonnes or more of dangerous substances at the site unless there has been notified in writing to the fire authority and the enforcing authority for this regulation the particulars specified in Part I of Schedule 2.
Where a notification has been made under paragraph (1) and a change specified in Part II of Schedule 2 takes place, the person in control of the site shall forthwith notify that change in writing to the fire authority and the enforcing authority for this regulation.
Where a change specified in paragraph 1 or 2 of Part II of Schedule 2 has been notified under paragraph (2), any resumption in the presence of a total quantity of 25 tonnes or more of dangerous substances at the site shall be subject to a fresh notification under paragraph (1).