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Clean Air World

Welcome to Clean Air World

The National Association of Clean Air Agencies (NACAA, formerly STAPPA/ALAPCO) welcomes you to Clean Air World. Use this web site to learn about air pollution, find the latest news and information on important air topics and link to governmental air pollution control agencies around the world  

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Did You Know?

Running trucks at normal speeds for prolonged periods with inflation pressures just 20 percent under what is recommended can reduce tire mileage by 16% and fuel mileage by 2.5%.