§ 1-3-4. VISIBLE EMISSIONS.
   (A)   No person shall cause, suffer, allow or permit the discharge of emissions from any new plant or building other than water in an uncombined form, which are visible to human observers.
   (B)   No person shall cause, suffer, allow or permit the discharge of emissions from any existing or modified bituminous concrete manufacturing installation other than water in an uncombined form, which are visible to human observers.
   (C)   No person shall cause, suffer, allow or permit emissions from any other existing installation, modified installation or building that are darker in shade or appearance than that designated as No. 1 on the Ringelmann Smoke Chart; or of such opacity as to obscure an observer’s view to a degree greater than does smoke designated as No. 1 on the Ringelmann Smoke Chart.
   (D)   Subsections (A), (B) and (C) of this section shall not apply to emissions during the building of a new fire, cleaning of fires, soot blowing, start-up and process modification or adjustment or occasional cleaning of control equipment, the shade or appearance of which is not darker than No. 2 on the Ringelmann Smoke Chart for periods aggregating no more than 4 minutes in any 60 minutes.
   (E)   Subsection (A) of this section shall not apply to emissions of the following:
      (1)   From the burning of wood in fireplaces on premises used for residential or recreational purposes;
      (2)   From open fires (except salamanders) permitted under provisions of § 1-2-3 of this Code.
   (F)   The control officer may grant exceptions to subsections (B) or (C) when the application of such subsections to a residential building housing 2 or less families creates undue economic hardship on individuals residing therein.
   (G)   No person shall cause, suffer, allow or permit visible emissions beyond the lot line of the property on which emissions originate.
(1959 Code, § 41-3) (Ord. 14-23-678, 11-13-2014)