EES 1080 Lecture Notes - Lecture 11: Particulates, Surface Mining, Smog
31 Dec 2018
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Document Summary
Foreign matter in the atmosphere: two matters, particulate matter (dust, chemicals. Sources of foreign matter: natural, not considered a pollutant, human activities, considered a pollutant. Smog: relatively high concentration mixture of both chemical and particulate pollutants over an urban area: two types of smog. Industrial: results in acid rain/greenhouse gas emissions: example: sudbury, ontario, canada, operations first opened in 1902, today, world"s 2nd largest nickel producer, worlds 2nd tallest smoke stack, tallest smoke stack in north america. Fallout: particles that settle out of the atmosphere: washout: particles or chemicals that are brought out of the atmosphere by rainfall. Environmental protection agency (epa: agency that determines criteria pollutants . Items posing great threats to human health and welfare . Six criteria pollutants (monitored by epa) review figure 17. 12: carbon monoxide (co, nitrogen oxides (nox, (tropospheric) ozone (o3, sulfur dioxide (so2, particulate matter (pm, lead (pb) Clean air act of 1970: beginning of first wave of strict policies that actually worked.
