**GAO-10-419T**                      Published: Feb 04, 2010. Publicly Released: Feb 04, 2010.                  

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## Highlights

Biomonitoring, which measures chemicals in people's tissues or body fluids, has shown that the U.S. population is widely exposed to chemicals used in everyday products. Some of these have the potential to cause cancer or birth defects. Moreover, children may be more vulnerable to harm from these chemicals than adults. The Environmental Protection Agency (EPA) is authorized under the Toxic Substances Control Act (TSCA) to control chemicals that pose unreasonable health risks. One crucial tool in this process is chemical risk assessment, which involves determining the extent to which populations will be exposed to a chemical and assessing how this exposure affects human health This testimony, based on GAO's prior work, reviews the (1) extent to which EPA incorporates information from biomonitoring studies into its assessments of chemicals, (2) steps that EPA has taken to improve the usefulness of biomonitoring data, and (3) extent to which EPA has the authority under TSCA to require chemical companies to develop and submit biomonitoring data to EPA.

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## Topics

Natural Resources and Environment

Birth defectsChemical exposureChemical researchChemicalsChildrenData collectionEnvironmental monitoringHealth hazardsPesticidesPollution controlPublic healthResearch programsRisk assessmentRisk managementSafety regulationSafety standardsStrategic planningToxic substancesBiomonitoring