For the purposes of this chapter the following words and phrases
shall have the meanings respectively ascribed to them by this section:
Ringelmann's smoke chart as published and used by the
United States Bureau of Mines.
All solids, including coke (partly burned fuel), soot and
fly ash, formed as a result of the combustion of fuel, which is carried
in the gas stream so as to reach the external air.
The exhalation, visible vapor, or substance that escapes
or is expelled in combustion from a burning substance.
Any chimney or smokestack or other structure whether of brick,
tile, concrete, metal or other material or a combination of any of
these materials intended for the emission of the products of combustion
from the burning of any fuel or material. Smokejacks attached to locomotive
roundhouses shall be deemed stacks and a part of whatever locomotive
is beneath them for the time being.
Chimneys or smokestacks, hereinafter known as stacks, defined in section 19-1 shall be classified as follows:
Class 1 includes all fixed or stationary stacks having an inside
area at the top not exceeding the area of a circle five feet in diameter.
Class 2 includes all fixed or stationary stacks having an inside
area at the top greater than the area of a circle five feet in diameter
but not exceeding the area of a circle 10 feet in diameter.
Class 3 includes all fixed or stationary stacks having an inside
area at the top greater than the area of a circle 10 feet in diameter.
Class 4 includes all stacks on steam locomotives.
(a)Â
The emission of smoke of a degree of darkness or density equal to
No. 2 of the chart or greater for more than six minutes in any one
hour from stacks of class 1 and class 2; or of a degree equal to No.
3 of the chart or greater for more than three minutes in any one hour
from stacks of class 2; or of a degree equal to No. 2 of the chart
or greater for more than 25 minutes in any one hour from stacks of
class 3; or of a degree equal to No. 3 of the chart or greater for
more than five minutes in any one hour from stacks of class 3; or
of a degree equal to No. 3 of the chart or greater for more than 20
seconds in any one period of five minutes from stacks of class 4,
is hereby prohibited.
The emission of cinders or other residue, from stacks of any
class, in such quantities as to cause annoyance to the public or injury
to business or property is hereby prohibited. Whenever special considerations
make necessary the operation of equipment which inherently cannot
avoid the generation of cinders or other residue, the smoke flues
serving such equipment shall be provided with cinder catchers or fly
ash and soot collectors of such design and installation as may be
approved by the chief of the fire department.
The chief of the fire department shall enforce the provisions
of this chapter.
