615. Marking of sites where dangerous substances are present.

A person in control of a site1 must ensure that there is not present at any one time a total quantity of 25 tonnes or more of a dangerous substance2 at the site unless the specified particulars3 have been notified in writing to the fire authority4 and the enforcing authority5. Where a notification has been so made and a specified change6 takes place, the person in control of the site must forthwith notify that change in writing to the fire authority and the enforcing authority7; and where a cessation or reduction in quantity of the presence of dangerous substances8