2.0
REGIONAL REPORTS
2.1.1
Common Air Pollutants
Ambient Concentrations
2.1
Windsor
In Windsor, the Ontario Ministry of  the Environment
The City of  Windsor (population approximately
operates two (urban) ambient air quality monitoring
209,000) lies in close proximity to Detroit, a large
sites: Windsor Downtown (University Ave.) and
metropolitan area which has a population of  approxi-
Windsor West (College St.)(Table 12), and four sites
mately four million people.  Detroit is a major center of
affiliated with various concentrated industrial activities:
the automotive industry for the United States, containing
Wright/Water St., Richmond/Drouillard Rd, Wyandotte
large facilities for Ford, Chrysler and General Motors.
St. and Howard Ave.  Appendix A, Diagram 1 provides
Several ancillary industries are located in Detroit as well
the location of  Windsorís monitoring stations and the
as in Windsor.
pollutants measured at each station.
Windsorís proximity to Detroit, in conjunction with
During the year 2000, the Windsor West (College St.)
dominant westerly winds, often has a negative impact on
site recorded 14 days with an Air Quality Index (AQI)
Windsor air quality.  Emissions from Detroit point, areal
greater than 49 or in the ŇpoorĒ range.  Ten of  these
and mobile sources are carried across the Detroit River
days can be attributed to high levels of  Total Reduced
increases Windsorís susceptibility to poor air quality.
Sulphur (TRS).  Poor air quality associated with TRS
Point sources include steel mills, petroleum refineries,
tends to be a localized, point source problem.  Emis-
and municipal waste and sewage incinerators.  The
sions from the  integrated steel mills and refinery on
operation of  millions of  vehicles in the Greater Detroit
Zug Island in Detroit, as well as the sewage treatment
area also contributes significantly to emissions of criteria
plant located in West Windsor, are the likely source of
and hazardous pollutants.  Also, the long range transport
TRS at this station.
of  ozone and particulate matter adds to the mix of  air
contaminants measured in the Windsor air shed.
In 2000, the Windsor Downtown (University Ave.)
recorded nine days of  poor air quality due to high levels
of  ozone (this station does not measure TRS).  The
frequency of  moderate-to-poor air quality, determined
from the ambient air quality reporting system, was
higher in the second half of the review period (1990-
2001) at the Windsor Downtown (University Ave.) site;
ground level ozone was the pollutant largely responsible
for this trend.  Unlike TRS, ozone levels can be attrib-
uted to contributions from more distant sources.
TABLE 12
Windsor Urban Ambient Monitoring Stations and Pollutants Measured
Ambient Monitoring Station
Pollutants Measured
Windsor Downtown
SO , Suspended Particulates (as Co-efficient of  Haze (COH), Nitrogen Oxide,
2
(University Ave.)
Nitrogen Dioxide, Carbon Monoxide, Total Suspended Particulate, Coarse/
Inhalable Particulate Matter (PM ) and selected metals
10
Windsor West
COH, Total Reduced Sulphur, Sulphur Dioxide, Ozone, Total Suspended
(College St.)
Particulate, Coarse/Respirable Particulate Matter (PM ) Fine/Respirable Particulate
10
Matter (PM )*
2.5
in 2002
*Began monitoring PM
2.5
21