Every person is guilty of a misdemeanor who, either by himself, his employee or agent, or as an employee or agent of another, causes, suffers or permits to be discharged from any source whatsoever, any smoke, dust, soot or fumes for a period or periods aggregating more than three minutes in any one hour, which is as follows:
A. Equal to or greater in density than that designated as No. 2 on the Ringleman Chart as published by the United States Bureau of Mines; or
B. So dense as to obscure the passage of light to a degree equal to or greater than does smoke described in subsection A of this section.
(Prior code § 6.04.110 (Ord. 284 § 16, 1947))