§ 10.56.270. Visible emissions.

A.

No person shall cause, suffer, allow or permit emission of smoke from any air contaminant source, the shade or appearance of which is as dark or darker than No. 1 of the Ringelmann Smoke Chart.

1.

The provisions of this subsection shall not apply to smoke emitted during the cleaning of a fire, the building of a new fire, or the blowing of soot from boiler surfaces. Under these conditions, smoke not darker than No. 3 of the Ringelmann Smoke Chart may be emitted for a period or periods aggregating no more than five minutes in any sixty consecutive minutes or more than twenty minutes in any twenty-four-hour period.

2.

The provisions of this subsection shall not apply to smoke resulting from any fire ignited for the purpose of training firemen or for research in fire protection or prevention, nor to uncontrollable emissions occasioned by breakdowns of fuel-burning equipment or other failure which is not reasonably preventable, or by the maintaining and repair of air pollution control equipment.

B.

No person shall cause, suffer, allow or permit the discharge into the open air, from any single source of emission whatsoever, of any air contaminant 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 section; provided, that this subsection shall not apply to vision opacity caused by uncombined water droplets.

C.

This section shall not apply to visible emissions from fuel-burning equipment used exclusively for heating a dwelling of less than three dwelling units.

D.

The provisions of this section shall not apply to any steam locomotive or steamboat used for recreational or historical purposes; provided, that such locomotive and steamboat shall operate without any unnecessary or intentional production of smoke.

(Prior code § 4-1-2)