Air Pollution Definition Air pollution is the presence in the air of Air pollution is the presence in the air of substances put there by the acts of man in concentrations sufficient to interfere with: ∙Health ∙Comfort Comfort ∙Safety ∙Full use and enjoyment of property
Harvard University / ENVR E‐101
• • • •
Cost nothing to use Use is not restricted Quality is not diminished by number of users If through actions of other users the value/quality of the public good is diminished, then it is the obligation of a government to then it is the obligation of a government to protect its value
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Air Pollution Sources / John D. Spengler, PhD
10/4/2012
Risk Management Paradigm Regulations
Sources
Transmission
Ambient pollution levels
Exposure
Dose
Health Effects
Risk Management Paradigm S t a n d a r d s
Environmental Management
Regulations
Sources
Transmission
Ambient pollution levels
Exposure
Dose
Health Effects
S t a n d a r d s
Environmental Management
Risk Management Paradigm Regulations
Sources
Transmission
Ambient pollution levels
Exposure
Dose
Health Effects
S t a n d a r d s
Pollutants and Sources
Environmental Management
Harvard University / ENVR E‐101
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Air Pollution Sources / John D. Spengler, PhD
Air Pollutants • Over Over three thousand three thousand (3000) substances have been measured in air • Regulate emissions of very few (