A person shall not discharge from any source whatsoever such quantities of air contaminants, including fly ash, dust, fumes, vapors, gases, and other forms of air pollution, as per Section 24243 of the State Health and Safety Code, or other material, which will cause injury, detriment, nuisance, or annoyance to any considerable number of persons or to the public or which endanger the comfort, repose, health or safety of any such persons or the public or which cause or have a natural tendency to cause injury or damage to animals, vegetation, business or property. In no event shall any emission, from any chimney or other source, or any solid or liquid particles in concentrations exceed 0.4 grains per cubic foot of the conveying gas at any point. (Ord. 1212 § 1, 1969; prior code § 33.703 (H)).