HOW DOES SCORECARD DETERMINE WHETHER HAZARDOUS AIR POLLUTANTS CAN BE ASSESSED FOR SAFETY?
Information about a chemical’s toxicity (known as risk assessment values) and information about exposures are both needed before a scientific risk assessment of a specific chemical can be performed. These are the basic components of chemical safety assessment. Scorecard tracks whether these types of information are publicly available for the 188 toxic chemicals or compounds listed as Hazardous Air Pollutants (HAPs) under Section 112 of the Clean Air Act. If a chemical has publicly available risk assessment values or media quality standards, Scorecard considers it has the toxicity data required for safety assessment. If a chemical has publicly available data that describes its concentration in specific media (i.e., air), Scorecard considers it has the exposure data required for safety assessment. If the relevant data for a chemical are not available, Scorecard indicates that its safety cannot be assessed. Scorecard evaluates safety data availability for HAPs by assessing whether they po
