Clean Air Act


Air Quality Act of 1967


Congress passes Air Quality Act in 1967. Since there was no enforcement of whatsoever, it failed to be successful

Clean Air Act


Another try at reducing the air pollution in the USA. The National Ambient Air Quality Standards (NAAQS) was established in order to enforce these laws. The Environmental Protection Agency (EPA) is then needed to set rules for the release of pollutants that could harm humans and animals. There's primary and secondary standards. Primary standards help our health, and secondary help protect welfare such as vegetables.

Lead is Decreased

1976 - 1980

The process of getting lead out of our daily lives begins. The amount of lead in our bodies drop 50% from 1976 to 1980.

Clean Air Act is Revised


The New Source Review (NSR) is enacted. This focuses toward the older factories that were grandfathered in. The old factories ended up polluting more than the newer ones, so then the EPA was required to do assessments, and install pollution controlling technologies.

Lead Levels are Still Dropping


Lead levels in blood has dropped 50% since 1976, and now lead in children has decreased 37%.

Lead Phase-Out


Lead levels in gasoline have decreased to 0.1 grams/gallon

Clean Air Act gets ANOTHER Revision


Changes include:
- acid rain control
-prohibition of leaded gasoline

Decreased Pollutants


Carbon Monoxide = 31% decrease
Sulfur Dioxide = 27% decrease
Particulate Matter = 71% decrease
Lead = 98% decrease

Bush Administration's NSR Rollback


The Bush Administration tries to rollback the NSR. This would allow old factories and industries to not have to follow the strict guidelines. Also, they are not required to make the change public either.