The National Ambient Air Quality Standards

question 141

Multiple Choice

The National Ambient Air Quality Standards:

• A) sets limits on quantities of certain pollutants that are emitted into outdoor air
• B) are to be established taking into account the economic and feasibility of the pollution controls necessary to be implemented to protect the public health and welfare
• C) are postponed by a variance for major emitting facilities if the owner can demonstrate that the standards will pose a significant financial burden
• D) are established by taking into account the public health and welfare taking into account an adequate margin to allow companies to maintain reasonable profits
• E) were met for the basic pollutants by the early 1990s