Environmental Protection Act
Loi sur la protection de l’environnement

R.R.O. 1990, REGULATION 337

AMBIENT AIR QUALITY CRITERIA

Note: This Regulation was revoked on August 31, 2008. See: O. Reg. 518/07, ss. 1, 2.

Last amendment: O. Reg. 518/07.

This Regulation is made in English only.

1. The desirable ambient air quality criteria for each contaminant set out in Column 1 of the Schedule is that amount of concentration or total amount of contaminant set out opposite thereto in Column 3 of the Schedule in the unit of measurement set out opposite thereto in Column 2 of the Schedule for the time set out opposite thereto in Column 4 of the Schedule. R.R.O. 1990, Reg. 337, s. 1.

Schedule

Item / Column 1 / Column 2 / Column 3 / Column 4 / Column 5
Name of Contaminant / Unit of Measurement / Average Amount of Concentration or Total Amount of Contaminant / Period of Time / Approximate Equivalent at 10°C and 760 mm Hg pressure
1. / Arsenic / Micrograms of Arsenic per cubic metre of air / 25 / 24 hours
2. / Cadmium / Micrograms of cadmium per cubic metre of air / 2.0 / 24 hours
3. / Carbon Monoxide / Parts of carbon monoxide per one million parts of air by volume / 30 / 1 hour / 36,200 ug/m3
13 / 8 hours / 15,700 ug/m3
4. / Dustfall / Tons of dustfall per square mile per month / 20 total / 30 days
13 / 1 year
5. / Fluorides (Gaseous) April 15 to October 15 / Parts of fluorides per billion parts of air by volume (Expressed as HF) / 1.0 / 24 hours / 0.86 ug/m3
0.4 / 30 days / 0.34 ug/m3
6. / Total Fluorides (Gaseous and Particulate) April 15 to October 15 / Parts of fluorides per one billion parts of air by volume (Expressed as HF) / 2.0 / 24 hours / 1.72 ug/m3
0.8 / 30 days / 0.69 ug/m3
7. / Total Fluorides (Gaseous and Particulate) October 16 to April 14 / Parts of fluorides per one billion parts of air by volume (Expressed as HF) / 4.0 / 24 hours / 3.44 ug/m3
1.6 / 30 days / 1.38 ug/m3
8. / Fluorides in Forage for Consumption by Livestock / Parts of total fluorides per one million parts forage (dry weight) / 35 / Individual Sample
9. / Fluoridation (total) April 15 to October 15 / Micrograms of total fluorides collected by 100 sq. centimetres of limed filter paper / 40 / 30 days
10. / Fluoridation (total) October 16 to April 14 / Micrograms of total fluorides collected by 100 sq. centimetres of limed filter paper / 80 / 30 days
11. / Hydrogen Sulphide / Parts of hydrogen sulphide per one million parts of air by volume / 0.02 / 1 hour / 30 ug/m3
12. / Lead / Micrograms of lead per cubic metre of air / 2.0 / 24 hours
0.7 arithmetic average / 30 days
13. / Mercaptans / Parts of mercaptans per one million parts of air by volume (Expressed as methyl mercaptan) / 0.01 / 1 hour / 20 ug/m3
14. / Mercury / Micrograms of mercury per cubic metre of air / 2.0 / 24 hours
15. / Nickel / Micrograms of Nickel per cubic metre of air / 2.0 / 24 hours
16. / Nitrogen Dioxide / Parts of nitrogen dioxide per one million parts of air by volume / 0.20 / 1 hour / 400 ug/m3
0.10 / 24 hours / 200 ug/m3
17. / Oxidants (total) / Parts of total oxidants per one million parts of air by volume / 0.10 / 1 hour
18. / Ozone / Parts of ozone per one million parts of air by volume / 0.08 / 1 hour / 165 ug/m3
19. / Soiling / Coefficient of Haze per 1,000 feet of air / 1.0 / 24 hours
0.5 / 1 year
20. / Sulphation / Milligrams of sulphur trioxide per 100 sq. cm of exposed lead peroxide per day / 0.7 / 30 days
21. / Sulphur Dioxide / Parts of sulphur dioxide per one million parts of air by volume / 0.25 / 1 hour / 690 ug/m3
0.10 / 24 hours / 275 ug/m3
0.02 / 1 year / 55 ug/m3
22. / Suspended Particulate Matter / Micrograms of suspended particulate matter per cubic metre of air / 120 / 24 hours
60 geometric mean / 1 year
23. / Vanadium / Micrograms of vanadium per cubic metre of air / 2.0 / 24 hours

R.R.O. 1990, Reg. 337, Sched.; O. Reg. 794/94, s. 1.

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