§ 265.01 Visible Emission Limitations from Any Single Source of Emission
   (a)   No person shall discharge into the atmosphere from any single source of emission whatsoever any air contaminant of a shade or density equal to or darker than that designated as No. 1 on the Ringelmann Chart or twenty percent (20%) opacity, except as set forth in the applicable provisions of this chapter and Chapter 277.
   (b)   A person may discharge into the atmosphere from any single source of emission for a period or periods aggregating not more than three (3) minutes in any sixty (60) minutes air contaminants of a shade or density equal to or darker than that designated as No. 1 on the Ringelmann Chart or twenty percent (20%) opacity but not darker than No. 3 on the Ringelmann Chart or sixty percent (60%) opacity.
(Ord. No. 141-79. Passed 12-17-79, eff. 12-19-79)