As used in this article, the term Hazardous Material shall mean any material or combination of materials that, because of its quantity, concentration or physical, chemical, biological or infectious characteristics, poses a substantial present or potential hazard to human health or safety or the environment if released into the workplace or environment or when improperly treated, stored, transported or disposed of or otherwise managed.

The provisions of this article shall not apply to any container that shall have a capacity of 150 gallons or less that shall be used for the purpose of supplying fuel for the vehicle on which it is mounted. These provisions shall also not apply to vehicles, trailers, containers or tanks containing anhydrous ammonia or other material prin1arily used by farmers for fertilizer purposes when such vehicles, trailers, containers or tanks are parked or housed upon property designated for the placement of such vehicle, trailer, container or tank by any farmers cooperative, elevator company or farm supply store located within the city limits.

Except as provided in section 14-304 of this article, it shall be unlawful for any person, firm, corporation or other entity to transport any hazardous material upon any street, avenue, highway, road, alley or any other public right-of-way in the city.

The provisions of section 14-303 of this article shall apply to all streets, avenues, highways, roadways, alleys or other public rights-of-way within the city, except those specified within this section where transportation of hazardous materials shall be allowed. Transportation of hazardous materials shall be allowed upon the streets, avenues, highways or roadways as determined by the city.

(a)   Except as provided in subsections (b) and (c) below, it shall be unlawful for any person, firm, corporation or other entity to park any vehicle, trailer or semi-trailer carrying any hazardous material within any city zoning districts as defined in Chapter 16 of this code.

(b)   Subsection (a) above shall not apply to vehicles, trailers or semi-trailers parked for continuous periods of time not to exceed one hour where such vehicles, trailers or semi-trailers are parked along those routes specified in section 14-304 of this article.

(c)   Subsection (a) above shall not apply to any vehicle, trailer or semi-trailer carrying any hazardous material where such vehicle, trailer or semi-trailer is not parked within 500 feet of any structure used for human habitation.

If any vehicle, trailer or a semi-trailer is found parked in violation of the provisions of this article, the Fire Chief or Assistant Chief or any law enforcement officer may require the owner, operator or lessee of the trailer to move it within two hours. If such removal is not accomplished on the order of any such officer, it may be accomplished by any such officer, by any reasonable means, if the continued presence of the trailer or semi-trailer at its parked location constitutes, adds to or prevents correction of a situation threatening imminent injury or damage to persons or property.