Course Module: EV-40 AIR Quality

The U.S. Clean Air Act was signed into law by President Lyndon B. Johnson on December 17, 1963. The act was meant to address air pollution nationally; this formidable task has required several significant amendments since its initial passage.

Air emissions originate from point sources such as large stationary fossil fuel power plants, smelters, industrial boilers, petroleum refineries, and manufacturing facilities and non-point sources such as on-road mobile, non-road mobile, and biogenic. The Texas Commission on Environmental Quality (TCEQ) oversees these types of emissions in Texas.

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