R.R.O. 1990, Reg. 337: AMBIENT AIR QUALITY CRITERIA, Environmental Protection Act, R.S.O. 1990, c. E.19
Environmental Protection Act
Loi sur la protection de l’environnement
R.R.O. 1990, REGULATION 337
AMBIENT AIR QUALITY CRITERIA
Historical version for the period December 16, 1994 to August 30, 2007.
Last amendment: O. Reg. 794/94.
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 April14 |
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.
