85. Every permit holder carrying on an activity under section 70.9 of the Environment Quality Act (chapter Q-2) shall protect, by means of an intrusion detection system, every building storing more than 45,000 kg of one of the categories of materials listed in subparagraphs 1 to 5 or more than 45,000 kg of several categories listed in subparagraphs 1 to 6:
(1) explosive materials;
(2) gaseous materials;
(3) flammable materials;
(4) oxidizing materials;
(5) materials having more than 1,500 mg/kg of total organic halogen; and
(6) liquids containing PCBs.
Where the storage is outside a building, the permit holder shall protect the storage site with an intrusion detection system.