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The National Air Pollution Surveillance (NAPS) program is the main source of ambient air quality data in Canada. The NAPS program, which began in 1969, is now comprised of nearly 260 stations in 150 rural and urban communities reporting to the Canada-Wide Air Quality Database (CWAQD). Managed by...

A series of surface climate parameters have been measured by members of the Climate Processes Section at the Borden Forest Research Station (44°19’N, 79°56’W) beginning in January 2006. The initial data included precipitation. In 2007, carbon dioxide fluxes from the soil (soil respiration) began...

Drought projections on seasonal to annual time scales are presented for Canada over the twenty-first century, based on the Standardized Precipitation Evapotranspiration Index (SPEI). Results make use of bias-corrected temperature and precipitation projections from 29 global climate models...

This dataset contains relative trends of annual and monthly regional maximum ocean wave heights in the Arctic, and data for three predictors derived from surface winds and sea ice concentration. It also contains estimates of historical (1979-2205) and future (2081-2100, RCP8.5 scenario) annual...

Atmospheric concentrations and deposition rates of particulate elements are important indicators for determining the potential impacts of the oil sands industries on the local environment. The datasets consist of measured ambient air concentrations (in PM2.5 and PM2.5-10) and estimated deposition...

This notice applied to owners of textile mills that manufactured textile using wet processing, used nonylphenol and its ethoxylates, and discharged their effluents, with a daily flow greater than 30 m3, to an off-site wastewater treatment facility. This notice was in effect from December 4, 2004...

This notice applied to owners of wastewater systems that, as specified in the notice, released effluent to surface water and where the concentration of total residual chlorine in the effluent was greater than 0.02 mg/L. This notice was in effect from December 4, 2004, to June 15, 2010. It is now...

This notice applies to owners of facilities that manufacture or use greater than 100 kg of siloxane D4 per year (alone or in a mixture), release effluents containing siloxane D4, and are involved in the activities specified in the notice. This notice has been in effect since June 2, 2012, for...

This notice applies to owners of dental facilities that perform activities in relation to dental amalgam or elemental mercury. This notice has been in effect since May 8, 2010, for owners of dental facilities. Although the initial facilities subject have completed their obligations, this notice...

This notice applies to owners of facilities that manufacture or use greater than 100 kg of bisphenol A per year (alone or in a mixture), release effluents containing bisphenol A, and are involved in the activities specified in the notice. This notice has been in effect since April 14, 2012, for...