Outdoor Air Quality Standards In the United States

However, there are still approximately 107 million people who live in areas with, unhealthy air quality. The EPA is continuously woddi to set standards and monitor the emission of pollutants that cause acid rain and dam to bodies of water and fish (currently there are over 2000 bodies of water in the United States that are under fish consumption advisories), damage to the stratospheric ozone layer, and damage to our buildings and our national parks. The 

Antimony 6 ppb 6 ppb copper smelting, refining, porcelain plumbing fixtures, petroleum refining, plastics, resins, storage batteries 

Asbestos 7 MX. (million fibers per liter) 7M.L. asbestos products, chlorine, asphalt felts and coating, auto parts, petroleum refining, plastic pipes 

Barium 2 ppm 2 ppm copper smelting, car parts, inorganic pigments, gray ductile iron, steel works, furnaces, paper mills 

Beryllium 4 ppb 4 ppb copper rolling and drawing, nonferrous metal smelting, aluminum foundries, blast furnaces, petroleum refinii  

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