By Alida Pitcher-Murray
Environmental regulation in the United States has been analogized to the architecture of shacks comprised of overlapping boards and tin. One such “board” is the Clean Air Act (“CAA”), which regulates air pollution across the country. Pursuant to the CAA, the U.S. Environmental Protection Agency (“EPA”) has established a regulatory framework that sets National Ambient Air Quality Standards (“NAAQS”) for “criteria” air pollutants: carbon monoxide, lead, nitrogen dioxide, ozone, particle pollution, and sulfur dioxide. Criteria air pollutants, as well as all other sources of outdoor air pollution, not only affect the air we breathe outdoors; they affect our Indoor Air Quality (“IAQ”), seeping into homes, schools, and workplaces via ventilation systems, building materials, and openings in windows and doors. The EPA is responsible for regulating, or setting standards for, many of the pollutants that impact IAQ, such as radon, pesticides, and asbestos, to name a few.