No person shall operate or cause to be operated upon any street, highway, public place, or private premises within the city any internal combustion engine, while stationary or moving, which emits, from any source of emission whatsoever, any air contaminant for a period aggregating more than three minutes in any one hour which is:
(A) Darker in shade than that designated as No. 1 on the Ringlemann Chart, as published by the United States Bureau of Mines; and
(B) Of an opacity as to obscure an observer’s view to a degree equal to or greater than does smoke described in division (A) above.
(Prior Code, § 102.007) Penalty, see § 95.999