Class I Area

Meaning, Term, and Glossary Definition - What is Class I Area?

Under the Clean Air Act. a Class I area is one in which visibility is protected more stringently than under the national ambient air quality standards; includes national parks, wilderness areas, monuments, and other areas of special national and cultural significance.

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Abatement Debris   Absorption   Absorption Barrier   Accident Site   Acclimatization   Acequia   Acid   Acid Aerosol   Acid Deposition   Acid Mine Drainage   
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Analytical testing dots