00000nam 2200000za 4500 9.544346 CaOODSP 20220621135747 ta 150406|2007||||xxc||||| f|0| 0 eng d 978-0-662-69727-5 CaOODSP eng eng fre n-cn--- En49-2/7-38-1 Canada. Environment Canada. Environmental Protection Service. National Air Pollution Surveillance (NAPS) Network, annual data summary for 2004 / [Issued by] Environmental Science and Technology Centre. Revision of Report 7/AP/38 (March 2006) Environment Canada. Update March 2007. xvi, 201p. : coloured maps, tables ; 28 cm. Report EPS 7/AP/38 35th report. This statistical report summarizes air pollution measurements from air monitoring stations across Canada. Monitored pollutants include sulphur dioxide, carbon monoxide, nitrogen dioxide, and ozone, as well as particulate lead and sulphate matter. Toxic organic compounds such as benzene, toluene, and tetrachloroethylene are also reported. The report compares the data with national air quality objectives, and includes Canada-wide standards for particulate matter and ozone. Includes maps showing monitoring stations. Issued also in electronic format. Softcover 07-22 2007-06-01 Air pollution gcpds Réseau national de surveillance de la pollution atmosphérique (RNSPA), sommaire des données annuelles pour 2004 / fre (CaOODSP)9.544347 Report ; EPS 7/AP/38 (CaOODSP)9.509278