Many outdoor air contaminants originate from various sources. The PHN recognizes that sources such as gas stations, dry cleaners, commercial building heating and cooling systems, and waste disposal facilities are referred to as:

Question

Quizplus · Accepted Answer

Area sources refer to sources of pollution that are spread over a relatively small area and include facilities like gas stations, dry cleaners, and waste disposal facilities.

Many Outdoor Air Contaminants Originate from Various Sources