Any person, firm or corporation violating any provision of this chapter shall be guilty of a misdemeanor and each such person, firm or corporation shall be deemed guilty of a separate offense for each and every day during which any violation is committed, continued or permitted. No person shall be deemed guilty of any violation of this chapter if acting in an investigative capacity pursuant to the request or order of the police chief, city attorney or duly appointed agent of either. (Ord. 890 §1 (part), 1990).