(A) It shall be unlawful within the village for any person owning or in charge of any fuel- burning, refuse-burning combustion or process equipment or device, or portable boiler, or stacks, vents or premises, to cause, suffer or allow the emission or discharge of smoke from any single such source into the atmosphere the appearance, density, or shade of which is No. 2 or darker, of the Ringelmann Chart, except when building a new fire, when manually cleaning a fire or when blowing tubes and flues in a power plant, heating plant or domestic heating plant, smoke may be emitted of an appearance, density or shade equal to or darker than No. 2 of the Ringelmann Chart for a period or periods aggregating not more than six minutes in any observed 60 minute period.
(B) The “Ringelmann Chart,” as published and described in the U.S. Bureau of Mines Information Circular 8333, and on which are illustrated graduated shades of gray to black for use in estimating the light obscuring capacity of smoke, shall be the standard for determining the appearance, density or shade of smoke. Observations of smoke emissions under this subchapter shall be made by comparing the observed density of smoke with the Ringelmann Chart numbers.
('81 Code, § 16-1.05) (Ord. 1971-7-18-805, passed 5-17-71) Penalty, see § 10.99