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§ 251.54 Ringelmann Chart
   “Ringelmann Chart” means the chart published and described in the U.S. Bureau of Mine Information Circular 8333, and on which are illustrated graduated shades of grey to black for use in estimating the light obscuring capacity of smoke.
(Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)
§ 251.55 Seal
   “Seal” means any device, tag or marking installed or affixed by the Commissioner of Air Pollution Control or by his or her agents or representatives so as to prohibit use of any process, fuel-burning or control equipment or any incinerator, premise or source causing a violation or from which violations of this Code originate. Sealing may also be accomplished by means of a written order by the Commissioner directed to the owner or operator of such equipment, premise or source instructing such owner or operator that the process, fuel-burning or control equipment or incinerator, premise or source causing a violation shall not be operated until the Commissioner authorizes such use in writing.
(Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)
§ 251.56 Significant Source
   “Significant source” means any stationary source which has potential emissions of more than twenty-five (25) tons per year (25T/YR) of a criteria pollutant which is not located at a facility (plant) which has potential emissions of more than one hundred (100) tons per year (100T/YR) of a criteria pollutant.
(Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)
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