If the ambient air quality in a region is cleaner than mandated by the NAAQSs, the air quality will be allowed to degrade down to the level of the NAAQSs.

Question

Quizplus · Accepted Answer

The National Ambient Air Quality Standards (NAAQSs) serve as minimum requirements for ambient air quality. If the air quality is cleaner than the NAAQSs, it is considered to be in attainment. The goal is to maintain and improve air quality, not allow it to degrade. Therefore, it is false that the air quality will be allowed to degrade down to the level of the NAAQSs.

If the Ambient Air Quality in a Region Is Cleaner