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).
The name Riya is of Spanish origin. The meaning of Riya is river. It is also of Hindi origin, where its meaning is singer. Riya is generally used as a girl's name. It consists of 4 letters and 2 syllables and is pronounced Riy-a.