AirToxScreen Risk Drivers
EPA uses several measures to determine which pollutants may contribute most to long-term cancer risks and noncancer health hazards, both nationally and regionally (for example, in certain metropolitan areas). This information helps EPA and state, local and tribal air agencies to better understand which pollutants and sources of pollution that we may need to look at more closely.
To do this, we define “drivers” of risk—pollutants that contribute most to risks and hazards—and “contributors”—pollutants that may also have an impact but are generally less important at these scales, nationally and regionally, than drivers.
The following documents contains these risk drivers and contributors for recent AirToxScreen assessments.
2020 AirToxScreen Risk Drivers (pdf)