National Ambient Air Quality Standards (NAAQS) The Clean Air Act, which was last amended in 1990, requires EPA to set National Ambient Air Quality Standards (40 CFR part 50) for pollutants considered harmful to public health and the environment. The Clean Air Act identifies two types of national ambient air quality standards.
Riya Jain is an actress, known for Apartment: Rent at Your Own Risk (2010).
Wuya (voiced by Susan Silo in the original series, Cree Summer in the second series) is an ancient Heylin witch. She served as the main antagonist of the first series and the principle antagonist against the entire Xiaolin side.