ES101 Lecture Notes - Lecture 5: Sewage Treatment, Air Quality Index, Surface Runoff
15 Jan 2018
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Document Summary
One environmental issue which we hear about daily in the news is the health and environmental risk associated with pollutants in various environments. Pollution as increased levels of substances in air, water, soil and food that will threaten human health or activities. Pollutants can be categorized as either natural or human (anthropogenic). As expected, human pollution is generated where human activity is greatest, near urban and industrial centers. Unfortunately, many pollutants can be carried great distances by air and water and contaminate regions far from their source. The map (figure a-3 on page 113 from the report transboundary air pollution in. Southern ontario) displays the source areas of sulphate that contributed to a pollution event in july 1998. You can see from the map that much of the pollution impacting this region came from sources throughout the central and eastern. Two general sources of pollution: point source localized and stationary pollution source.
