CITY OF CHICAGO, ILLINOIS

AIR POLLUTION CODE

CHAPTER 17

(amended January 1, 1965)

17-22. Open fires other than those covered by section 17-31 of this code, diesel motor vehicles and all fuel burning, combustion or process equipment, incinerators or devices shall meet the requirements of section 17-23. (Amend. Coun. J. 7-1-63, p. 579.)

17-23. It shall be unlawful within the City of Chicago and within one mile of the corporate limits for any person, owner, agent, operator, firm or corporation to permit to cause, suffer or allow the emission of any smoke from any source whatever of a density, shade or opacity equal to or greater than that described as #2 on the Ringelmann chart as published by the United States Bureau of Mines provided that the following exceptions to the provisions of this section shall be permitted for fuel burning equipment.

(1) For a period or periods aggregating 4 minutes in any 30 minutes of a density, shade or opacity equal to but not greater than that described as #2 on the Ringelmann chart.

(2) For a period or periods aggregating 4 minutes in any 60 minutes of a density, shade or opacity equal to but not greater than that described as #3 on the Ringelmann chart when building a new fire. (Amend. Coun. J. 7-1-63, p. 579.)

* Chicago definition of smoke is as follows: Smoke is small gas-borne particles other than water, that forms a visible plume in the air from a source of atmospheric pollution.

CITY OF CLEVELAND, OHIO

AIR POLLUTION CODE

ORDINANCE NO. 428-A-62

CHAPTER 5 - PROHIBITED EMISSIONS

(effective June 20, 1962)

Section 4.0501. SMOKE

No owner, occupant or person in charge, by himself, his agent or employee, shall cause, suffer or allow smoke in excess of the following limitations to be discharged from any stack or vent within the City of Cleveland.

No owner, occupant or person in charge, by himself, his agent or employee, shall cause, suffer or allow any dust or fume having a color other than black to be discharged from any stack or vent within the City of Cleveland in excess of such density or opacity in shade as that designated as No. 2 on the Ringelmann Chart. When the presence of uncombined water is the sole reason for the failure to meet the limitations in this section, these limitations shall not apply.

COUNTY OF LOS ANGELES, CALIFORNIA

AIR POLLUTION CONTROL DISTRICT

RULES AND REGULATIONS

REGULATION IV. PROHIBITIONS

(amended June 1, 1965)

Rule 50. RINGELMANN CHART. A person shall not discharge into the atmosphere from any single source of emission whatsoever any air contaminant for a period or periods aggregating more than three minutes in any one hour which is:

As dark or darker in shade as that designated as No. 2 on the Ringelmann Chart, as published by the United States Bureau of Mines, or

b. of such opacity as to obscure an observer's view to a degree equal to or greater than does smoke described in subsection (a) of this Rule.

CITY OF POUGHKEEPSIE, NEW YORK

AIR POLLUTION CONTROL ORDINANCE

(effective December 1, 1951)

IV. Applicability

A. Sources

B.

Domestic installations; apartment house, office building, school, hotel, loft building, hospital and similar installations; stationery installations; railroad locomotives; building fresh fires; other stationery installations.

Regulated pursuant standards of Table I. /sec. 3/.

Specific Pollutants

1.

Smoke

discharge or emission of smoke shade or density darker than that specified and for duration shown in Table I. /sec. 37.

Ringelmann Chart or other charts of equivalent shades of grey incorporated into ordinance by reference.