Limits of concentration of gas proposed in work environments and in arenas37
| CO (ppm) | |||
|---|---|---|---|
| 1 h | 8 h | NO2 (ppm) 8 h | |
| DSC, Departements de Santé Communautaire; CHUL, Centre Hospitalier de l'Université Laval. | |||
| Work environment: | |||
| American Conference of Government Hygienists56 | – | 50 | 3 |
| Building Code of Québec37 | 400 | 50 | 3 |
| Oatman and Zetterlund31 | 200 | 35 | 5 |
| Arenas: | |||
| Luckhurst and French (Department of Health and Social Development, Winnipeg, Manitoba)29 | 25 | 12 | – |
| MHPC, Québec37 | 30 | 13 | – |
| Kwok, (Community Health Dept., Etobicoke, Ontario)24 | 25 | 13 | – |
| Ontario Arenas Association57 | 35 | – | – |
| King County Health Department, Seattle, Washington21 | 25 | – | – |
| British Columbia Ministry of Labor58 | 25 | – | – |
| Lévesque et al, DSC, CHUL, Québec2728 | 20 | – | – |
| Coueffin, Simon Fraser Health Unit, British Columbia58 | 25 | 12 | – |
| Minnesota Department of Health35 | – | – | 0.5 |
| National primary ambient air quality standards59 | 13 | 9 | 0.14 |
| DSC and of Québec37 | 20 | – | 0.5 |