PSD areas
A) were defined recently by an Executive Order issued by President Obama
B) are those areas defined as 'polluting source designated'
C) face more lenient emissions standards than nonattainment regions
D) are no longer recognized in U.S. policy
E) none of the above

Question

Quizplus · Accepted Answer

PSD areas are Prevention of Significant Deterioration areas and have been recognized in U.S. policy since the 1970s as part of the Clean Air Act. They are areas with air quality that is better than the National Ambient Air Quality Standards but still require protection from significant deterioration due to new industrial development.

PSD Areas