Spare the air for a healthier future 1955 – 2005 Abstract Air pollution has aggravated mankind for hundreds of years. Its impact is local, regional and sometimes global. Adverse effects include plant damage, lung and eye irritation, and death. Local, state and federal agencies regulate emissions in order to protect the public health. They have needed to exercise ever stricter controls and regulations as human activity has increased its impact on the environment. The Bay Area recorded its worst regional air pollution in 1969. In 2004, the Bay Area enjoyed its best air quality ever. We met nearly all national and state air quality standards. The California ozone standard was exceeded 7 times. The national and California PM2.5 standard was exceeded once. Presented by: Tim Underwood Source Test Principal Engineer BAAQMD May 4, 2005

Source: US Census Data (2000) San Francisco Bay Area 1955 2004 3 Million People 7 Million People 1.7 Million Cars 5.1 Million Cars 35 Million Vehicle 126 Million Vehicle Miles Driven Daily Miles Driven Daily Source: US Census Data (2000)

Most of this color data collected between 1968-1972 This color data is from 2004

Days Exceeding Ozone Standards In BAAQMD