Also note that there is a citation for this element. Remember, when you utilize a source ensure that you are acknowledging it in your work through a citation and a matching reference at the end. Further, note that it is a limited number of dates and only the important dates. Using the topic of “The Clean Air Act and its Effect on Business Practices and the Environment” we would approach this first element (using Template 2) like this: PERIOD: (AMS, 2007; Foundation for Clean Air Progress, 2007) 1948 – Deadly smog in Donora, PA Temperature inversion and large amount of industrial mills in the area caused a heavy smog for five days. The air was trapped due to the valley topography 20 deaths, hundreds of illnesses This and similar incidents prompted the creation of the Air Pollution Control Act in 1955. 1952 – Deadly smog in London, England An atmospheric inversion caused smog to settle on city for four days Caused thousands of deaths and thousands of illnesses Prompted Great Britain’s first CAA in 1956 1955 – Air Pollution Control Act of 1955 First federal air pollution law which identified air pollution as a national problem. Mandated research programs to determine the health and welfare effects of air pollution. 1963 – Clean Air Act of 1963 Set emission standards for stationary sources such as industrial plants. 1965 – Amendment included the Motor Vehicle Pollution Control Act 1966 – Amendment expanded local air pollution control programs 1967 – Amendment included The Air Quality Act 1970 – NEPA is signed (1970) The National Environmental Policy Act (NEPA) regulates the activities of building new power plants or highways for the environmental effects. Law grew from public pressures. 1970 – The Clean Air Act of 1970 Addressed: Six main criteria pollutants Mobile pollution sources Air toxics (hazardous pollutants) program Industrial emissions contributing to acid rain Air emissions permits Production and use of chemicals that can damage the ozone layer Citizens can take legal action again violators.
1970 – EPA is created The CAA of 1970, NEPA, and Earth Day helped to prompt this governmental reorganization. 1977 – CAA of 1970 Amendments Established motor vehicle emission standards. 1990 – The Clean Air Act of 1990 Rewritten CAA of 1970 with more categories addressed. Late 1990s Multiple studies show that the benefits of the CAA greatly exceed the costs. In this example you have a time periods that have specifics followed by elaboration through sub-bullet points. This gives the reader a breadth of information and, again, determining how you want to explain your topic will help you to identify which example you want to use. This is a complex topic and without the different timeframes and what ensued it would not give clarity to the reader to understand the topic. Notice how one timeframe builds upon the next and why.
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