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1923: Putting the Lead In

Congress passes the first federal legislation aimed at reducing pollution.

Carbon monoxide, Nitrogen dioxide, Ozone, Sulfur dioxide, Particulate matter with aerodynamic size less than or equal to 10 micrometers (PM-10), and Lead are the six criteria pollutants.

National Academy of Science reported that

leaded gas is the largest source of atmospheric

lead. Sped up the phase-out of leaded gasoline.

Regarded as an innovative approach toward curbing sulfur dioxides (SO2) and nitrogen oxides (NOx)

The U.S. Department of Justice files suit against seven utilities claiming that “repairs” undertaken over the past two decades without corresponding pollution control upgrades violate New Source Review.

2002: NSR Rollback Initiative

EPA will allow companies to avoid updating emission controls if their plant’s equipment has been reviewed at any time within the past decade, and the measures used to calculate emissions levels will be reconfigured.

Communities will now not know when a nearby power plant is increasing the amount of pollutants pumped into their backyards. The new regulations are slated to go into effect in March 2003.

Lead Phase-out

Starting in the 1920s, oil companies began adding tetraethyl lead to (TEL) gasoline to deliver greater power to internal-combustion engines.

Catalytic converters were the answer to improved engine efficiency, and leaded gasoline would not work with them. In 1970, General Motors announced it would make the switch to cleaner gas by 1974 to meet the requirements of the Clean Air Act. The other major auto companies followed suit.

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Sources

http://www.acslpa.org/html/clean_air_act_timeline.html

1990: Clean Air Act Amendments

A report by the Journal of the American Medical Association credits Clean Air Act regulations pertaining to automobile emissions with a reduction in carbon monoxide-related deaths, saving 11,700 lives between 1968-1998.

1999: TV2002: AMA Report

1995: Acid Rain Reductions

2000: Cleaner Air Milestones

1999-2000: DOJ Sues

Almost all the pollutants that contribute to the National Ambient Air Quality Standards have significantly decreased since 1970

Phase I units reduce their SO2 emissions by 45%

1967: Air Quality Act of 1967

Leaded Gas is introduced to the market.

1970: Clean Air Act

1980: Lead Phase-out Gets an Unlikely Boost

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