1. Owners and operators of facilities where one hundred pounds or more of explosives or blasting agents as defined in Title 49 of the Code of Federal Regulations, Part 173, Subpart C are temporarily stored shall file such reports as required under section 292.605 whenever such explosive materials are stored in a particular facility for more than fifteen days and each time such explosive materials are relocated to a new site for storage of more than fifteen days duration, except that when such explosive materials are stored in any facility for less than fifteen days such reports shall not be required and the facility owner or operator shall, within twenty-four hours of the arrival of such explosive materials at the facility, notify the local fire department in the jurisdiction where the facility is located that such explosive materials are temporarily stored in that facility and shall describe the contents and amount of the explosive materials stored therein. The provisions of this subsection concerning explosive materials shall apply to owners and operators of facilities where explosives are temporarily stored prior to use at that facility or location and shall not apply to storage by manufacturers and distributors prior to sale or to such material while in transit provided that the transporter is in compliance with the United States Department of Transportation regulation.

2. All facilities required to submit reports under sections 292.600 to 292.625, except those facilities having an emergency response policy or facilities located in a fire protection district or municipality having a fire protection code, shall provide visible markings on the outside of buildings, rooms and containers where hazardous substances are present. These markings shall conform to the National Fire Protection Association Standard Number 704 or with other federal laws or regulations, or in the case of containers, may as an option comply with Safety and Health Administration Hazard Communication Rule, 29 C.F.R. § 1910.1200 (f). To avoid duplication of markings, marking requirements of the United States Department of Transportation shall satisfy the requirements in regard to motor vehicles, rolling stock and aircraft.