Of the fifteen hazardous air pollutants identified
1,4 dichlorobenzene
by the Detroit-Windsor Board:
Emissions are the result of  its use in chemical manufac-
1.
Five are metals
turing and many consumer solvents.
Arsenic compounds,
beryllium,
Arsenic compounds
cadmium,
chromium and
Emitted from sources of  coal combustion as well as
nickel compounts
utility boilers, waste oil burning, smelters and glass
manufacturing and motor vehicle manufacturing.
2.
One is a Semi-Volatile Organic Compound
(SVOCs)
Benzene
Benzo(a)pyrene
General sources include road vehicles, gasoline market-
3.
Nine are Volatile Organic Compounds (VOCs)
ing, and petroleum refining.  Coke manufacturing and
other steel operations are also major sources.
1,2-dichloroethane,
1,3-butadiene,
1,4-dichlorobenzene,
Benzo(a)pyrene
benzene,
carbon tetrachloride,
Sources include the use of  wood and coal in small
chloroform,
combustion units, coke production, vehicles (diesel), and
formaldehyde,
utilities.
perchloroethylene, and
trichloroethylene
Beryllium
The following is a list of  the fifteen chemicals selected
Coal combustion and cement manufacture.
by the Board and their major emission sources.
Cadmium
1,2-dichloroethane (ethylene dichloride)
Emitters include motor vehicle manufacturing, other
Sources include manufacturing industry, wastewater
steel mill and coke operations, utilities and fuel combus-
treatment plants and other waste disposal and treatment
tion.
operations.
Carbon tetrachloride
1,3 butadiene
Motor vehicle manufacturing, utilities and other com-
Principal emitter is the mobile source sector with some
bustion sources.  Carbon tetrachloride is also emitted
contribution from industrial sources -  prescribed
from wastewater treatment plants and other waste
burning can also contribute.
dispoal and treatment operations.
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