EC238 Chapter Notes - Chapter 17: Iso 9000
Document Summary
Chapter 17 air pollution control policy. Ambient air quality targets they are set for the criteria pollutants and to achieve a target level emissions targets for point and nonpoint sources must also be set. Objectives are set at three levels: 1. ) Maximum desirable level is a long-term goal for air quality to protect the population and ecosystems, gives a basis for preventing degradation of air quality in relatively unpolluted parts of the country: 2. ) Maximum acceptable level next lower level of air quality, seen as the level needed to provide adequate protection against adverse effects of air pollutants on human health and comfort, soil, water, vegetations, animals, materials, and visibility: 3. ) Maximum tolerable level represents the lowest boundary before immediate action is required to protect the health of the general population. Point of impingement point where pollutants from a factory stack or other discharge point first encountered the ground, a building, or other object.
