- Very few (to date, only six) of the thousands of chemicals emitted into the air by industrial facilities in Canada are subject to federal regulation.
- In June 2000, the federal government added fine particulate matter to its toxic substances list; how, if at all, it will be regulated remains to be seen.
- National ambient air quality objectives exist for only five substances, but these are voluntary goals, in many instances based on outdated science.
- Province governments play the front line role in regulating industrial emitters through permitting systems that vary from province to province.
- Governments officials often have a broad discretion to set permit requirements, and to overlook non-compliance with such requirements.
Various strategies and legal procedures have been used to control and reduce industrial source air pollution. These include:
- air quality objective setting
- air emission permitting regimes
- environmental assessment of new or expanded air emission sources
- voluntary measures including pollution prevention planning and emission reduction programs and emissions trading
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