In the I-P district, any process which involves the creation or emission of any odors, gases or other odorous matter shall at all times comply with the standards set by the San Bernardino County air pollution control board. In no event shall odors, gases or other odorous matter be emitted in such quantities as to be readily detectable when diluted in a ratio of one volume of odorous air to four (4) volumes of clear air. The point of measurements shall be at the lot line or at the point of greatest concentration, if further than the lot line. (Ord. 1000 § 28.54(G), 1955)