Exposure monitoring or estimation programs provide information that can be used to estimate the dose of toxic chemicals people take in as a result of breathing polluted air, drinking contaminated water, etc.
WHERE DO SCORECARD'S EXPOSURE DATA COME FROM?
Scorecard identifies chemicals covered by exposure monitoring or estimation projects conducted in seven different media:
Ambient outdoor air - chemicals covered by the National Air Monitoring System, EPA's National-Scale Air Toxics Assessment, EPA's Cumulative Exposure Project, EPA's TRI Environmental Indicators Project, state air toxics monitoring programs and the Urban Air Toxics Monitoring Program
Indoor air - chemicals covered by EPA's Total Exposure Assessment Methodology population-based surveys of indoor and ambient air exposure
Surface water - chemicals covered by Clean Water Act compliance monitoring
Drinking water - chemicals covered by Safe Drinking Water Act compliance monitoring
Biota - chemicals covered by the National Oceanographic and Atmospheric Administration's National Status and Trends Program
Food- chemicals covered by Food and Drug Administration programs monitoring pesticides, metals and other contaminants in the food supply
Tissue - chemicals covered by the National Human Adipose Tissue Survey and/or the National Health and Nutrition Examination Survey
NOTE: Scorecard currently provides online access to ambient air exposure data (see Criteria Air Pollutants or Hazardous Air Pollutants). To ascertain if online access to exposure data in other environmental media are available, follow the links provided in the references for these exposure monitoring programs.