1462.18 VISIBLE EMISSIONS.
   (a)   Smoke; Equivalent Opacity.
      (1)   No person shall cause or permit the emission into the atmosphere, from any new source of process or fuel-burning equipment approved for installation after the effective date of this Air Pollution Code (Ordinance 53-70, passed May 25, 1970), of any air contaminant whatsoever which is:
         A.   Of a shade or density darker than that designated as No. 1 on the Ringelmann Chart;
         B.   Of such opacity as to obscure an observer's view to a degree greater than does the smoke designated as No. 1 on the Ringelmann Chart;
         C.   Of a shade or density darker than that designated as No. 2 on the Ringelmann Chart for a period or periods aggregating more than three minutes in any one hour or nine minutes in any eight-hour period; or
         D.   Of such opacity as to obscure an observer's view to a degree greater than does the smoke designated as No. 2 on the Ringelmann Chart for a period or periods aggregating more than three minutes in any one hour or nine minutes in any eight-hour period.
      (2)   No person shall cause or permit the emission into the atmosphere, from any existing source of process or fuel-burning equipment or any open fire approved in accordance with Section 1462.20(b), of any air contaminant whatsoever which is:
         A.   Of a shade or density equal to or darker than that designated as No. 2 on the Ringelmann Chart;
         B.   Of such opacity as to obscure an observer's view to a degree greater than does the smoke designated as No. 2 on the Ringelmann Chart;
         C.   Of a shade or density equal to or darker than that designated as No. 3 on the Ringelmann Chart for a period or periods aggregating more than five minutes in any one hour or fifteen minutes in any eight- hour period; or
         D.   Of such opacity as to obscure an observer's view to a degree greater than does smoke designated as No. 3 on the Ringelmann Chart for a period or periods aggregating more than five minutes in any one hour or fifteen minutes in any eight-hour period.
      (3)   No person shall cause or permit the emission into the atmosphere, from any refuse-burning equipment, of any air contaminant which is:
         A.   Of a shade or density darker than that designated as No. 1 on the Ringelmann Chart; or
         B.   Of such opacity as to obscure an observer's view to a degree greater than does the smoke designated as No. 1 on the Ringelmann Chart.
      (4)   No person shall cause or permit the emission into the atmosphere, from any diesel locomotive or diesel-driven steamship, of any air contaminant which is:
         A.   Of a shade or density darker than that designated as No. I on the Ringelmann Chart;
         B.   Of such opacity as to obscure an observer's view to a degree greater than that designated as No. 1 on the Ringelmann Chart;
         C.   Of a shade or density equal to or darker than the smoke designated as No. 3 on the Ringelmann Chart for a period or periods aggregating more than thirty seconds in any three consecutive minutes or four minutes in any fifteen consecutive minutes; or
         D.   Of such opacity as to obscure an observer's view to a degree equal to or greater than does the smoke designated as No. 3 on the Ringelmann Chart for a period or periods aggregating more than thirty seconds in any three consecutive minutes or four minutes in any fifteen consecutive minutes.
      (5)   The limitations on visible emissions established in subparagraphs (a)(1) through (3) hereof shall not apply:
         A.   To any fire started for the purpose of training or research when such fire is approved by the Commissioner of Air Pollution Control; or
         B.   When the presence of uncombined water is the only reason for the failure of an emission to meet such limitations.
      (6)   All process or fuel-burning equipment existing prior to the effective date of this Air Pollution Code (Ordinance 53-70, passed May 25, 1970) shall be in compliance with the limitations set forth in subparagraph (a)(1) hereof by December 31, 1971.
   (b)   Odors.
      (1)   No person, or his agent or employee, shall cause or permit the emission of odorous matter into the atmosphere so as to cause an objectionable odor, as determined by the Commissioner or his duly authorized representative or as determined in subsection (b)(2) hereof, in any of the following locations:
         A.   On or adjacent to residential, recreational, institutional, retail sales, hotel or educational premises;
         B.   On or adjacent to industrial premises, when air containing such odorous matter is diluted with twenty or more volumes of odor-free air; or
         C.   On or adjacent to premises other than those listed in subparagraphs (b)(1)A. and B. hereof, when air containing such odorous matter is diluted with four or more volumes of odor-free air.
      (2)   An odor shall also be deemed objectionable if not less than thirty percent of a sample of twenty or more persons, or not less than seventy-five percent of a sample of less than twenty persons, exposed to it believe it to be objectionable in usual places of occupancy.
      (3)   After an odor is deemed objectionable as provided herein, the Commissioner shall issue an order for abatement as provided in Section 1462.09.
   (c)   Rendering Plants.
      (1)   As used in this section, "rendering plant" means the land, buildings, machinery, apparatus and fixtures employed in a process by which, through the use of heat or other methods, unsalable, spoiled or contaminated animal, poultry or fish matter is so treated as to convert it into fats and oils, foods for poultry, livestock or pets, fertilizer or other products.
      (2)   No person shall operate or cause to be operated a rendering plant.
         (Ord. 53-70. Passed 5-25-70.)