No person shall cause, suffer, or allow to be emitted into the open
air from any fuel burning equipment during normal operation, smoke the shade
or density of No. 2 of the Ringelmann Chart, except for three minutes in any
fifteen-minute period which the smoke may be equal to No. 2 Ringelmann Chart,
and except for one minute in any thirty-minute period, during which the smoke
may be greater than No. 2 Ringelmann Chart, and except as hereinafter provided.
A.
Generally. No person shall cause, suffer, or allow to
be emitted into the open air from any fuel-burning equipment during the building
of new fires, except steam locomotives as hereinafter provided, cleaning operations,
reversing gas producer cycles, or equipment breakdowns, smoke the shade or
density of No. 2 Ringelmann Chart except for three minutes in any fifteen-minute
period during which the smoke may be equal to No. 2 Ringelmann Chart, and
except for two minutes in any fifteen-minute period during which the smoke
may be greater than No. 2 Ringelmann Chart.
B.
Steam locomotives. No person shall cause, suffer or allow
to be emitted into the open air from any steam locomotive during the building
of a new fire, smoke the shade or density of No. 2 Ringelmann Chart, except
for three minutes in any fifteen-minute period during which the smoke may
be equal to No. 2 Ringelmann Chart and except for three minutes of which no
period shall exceed two continuous minutes in any 15 minute period of the
first 30 minutes of a new fire during which the smoke may be greater than
No. 2 Ringelmann Chart, and except for two minutes in any fifteen-minute period
of the second 30 minutes of such new fire during which the smoke may be greater
than No. 2 Ringelmann Chart.
