Criteria (Ontario) for Total Suspended Particulate (TSP)
Total Suspended Particulates
Inhalable Particulate Matter (PM )
Sources are numerous and include combustion, incin-
eration, construction, mining, metal smelting and metal
processing. Other sources include motor vehicle
May be directly emitted by a source or formed in the
exhaust, road dust, wind blown soil, and forest fires.
atmosphere by the transformation of gaseous
precursor emissions, such as NOx and SO (Ref.
Respiratory diseases such as asthma are aggravated by
and PM .
exposure to high concentrations of PM
Standards (Michigan) / Criteria (Ontario) for Inhalable Particulate Matter
Michigan (U.S. EPA NAAQS)
Primary (Health Related)
Annual Arithmetic Mean
same as Primary standard
The PM standard is attained when
the expected annual arithmetic mean
concentration is less than or equal to
50 µg/m (three-year average)
The 24-hour standard is attained when
the expected number of days above
150 µg/m is equal to or less than
one per year.
24-hour Interim AAQC
Fine/Respirable Particulate Matter (PM )
Major sources of PM are fossil fuel combustion
by electric utilities, industry, and motor vehicles;
Fine PM (PM ) is derived mainly from combustion
residential fireplaces and wood stoves; vegetation
material that has volatilized and then condensed, or
burning; and the smelting or other processing of
from the condensation or transformation of
emitted gases in the atmosphere, such as sulfur
dioxide (SO ), nitrogen oxides (NOx) and volatile
organic compounds (VOC) (Ref. 12).
Depend on the exposure, concentration and chemi-
cal nature of the particulate. Fine particulates can