Applications for a permit to organize or conduct an off-road vehicle or motorcycle event shall be in the form of a letter requesting permission to organize and conduct an event. The letter shall describe the proposed event. The Chief of Police shall grant the permit if he determines that the event will apparently be conducted in compliance with all applicable laws and regulations, that the proposed location will be desirable to the public convenience and welfare, that the proposed operation will not create any undue fire hazard, and that such operation is of sufficient distance from occupied areas so as not to cause excessive noise, dust or fumes affecting the occupied areas. The Chief of Police, upon granting of said permit, may attach whatever conditions and terms are necessary or appropriate to carry out the objectives stated in this Section.