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Notes
| 1. | Drainage areas are natural geographic units defined by the boundaries between river systems. For details on the drainage area framework, please see Data quality, concepts and methodology — Major drainage area and sub-drainage area geography. |
| 2. | Statistics Canada, 2004, Canada e-book, Catalogue no.11-404-X (accessed August 30, 2006). |
| 3. | OECD, 2007, Health at a Glance: OECD Indicators, www.sourceoecd.org/rpsv/health2007/index.htm (accessed November 15, 2007). |
| 4. | Includes only those establishments that derive their primary revenue from transportation activities. This combines the 1997 North American Industry Classification (NAICS) codes 481 to 488. |
| 5. | Statistics Canada, Environment Accounts and Statistics Division. |
| 6. | Environment Canada, 2005, Technical Supplement: Carbon dioxide emissions from fossil fuel use, Canada (1958-95), www.ec.gc.ca/soer-ree/English/Indicators/Issues/Climate/Tech_Sup/ccsup01_e.cfm (accessed August 28, 2006). |
| 7. | Environment Canada, 2006, Fossil Fuels, www.ec.gc.ca/cleanair-airpur/Fuels-WS0E66B313-1_En.htm (accessed September 20, 2006). |
| 8. | Environment Canada, 2007, National Pollutant Release Inventory, Ottawa, Ontario. |
| 9. | Light vehicles are those vehicles weighing less than 4.5 tonnes. |
| 10. | Environment Canada, 2001, Threats to Sources of Drinking Water and Aquatic Ecosystem Health in Canada, NWRI Scientific Assessment Report Series, No. 1, Burlington, Ontario: National Water Research Institute. |