Whenever a hazardous chemical can be chemically changed to a less dangerous and more stable material, a qualified chemist of the manufacturer shall state in writing the safest and quickest method of changing the total capacity of the tank or tanks in case of a rupture, spillage or other emergency. The owner and/or operator of said tank or tanks shall keep sufficient quantities of the changing agent as hereinbefore determined so as to be readily available in the event of an emergency.
(Prior code § 92-14.4)