No person shall cause, suffer, allow or permit
particles to be emitted from any stack or chimney into the outdoor
air, the shade or appearance of which is greater than twenty-percent
opacity, exclusive of water vapor.
The provisions of this article shall not apply:
A.
To the emission of particles the shade or appearance
of which is greater than twenty-percent opacity, exclusive of water
vapor, for a period of not longer than three minutes in any consecutive
thirty-minute period.
B.
To source operations issued a variance in accordance
with Chapter 7, Section 5, of the State Air Pollution Control Code.
C.
To indirect heat exchangers.
D.
To incinerators.
E.
For a period of five years from the date of issuance
of a valid permanent certificate to operate to a source operation
equipped with control apparatus for which a valid permit to construct
or the permanent certificate to operate was issued by the State Department
of Environmental Protection during the period from June 15, 1967 to
the effective date of this article.
