US EPA - Hazardous Air Pollutants
Clean Air Act Amendments of 1990 List of Hazardous Air Pollutants
"EPA is required to control 188 hazardous air pollutants. Examples of toxic air pollutants include benzene, which is found in gasoline; perchlorethlyene, which is emitted from some dry cleaning facilities; and methylene chloride, which is used as a solvent and paint stripper by a number of industries. Through appropriate rulemaking, the Clean Air Act list can be modified. A current list of modifications is available. Some clarification on certain pollutant aggregation is also available." List of modifications is at http://www.epa.gov/ttn/atw/pollutants/atwsmod.html
Pharos does not include
- the large and ambiguous radionuclides group (ex radon)
- the large polycyclic organic matter group - only PAHs.
- mineral fiber emissions from facilities manufacturing or processing glass, rock, or slag fibers (or other mineral derived fibers) of average diameter 1 micrometer or less.