Overview of the Second List of Chemicals for Tier 1 Screening


Source: EPA
Related Topics: Toxic Substances Control Act (TSCA)

EPA published the second list of chemicals for Tier 1 Screening on November 17, 2010 (PDF) (7 pp, 170K, About PDF). This list of 134 chemicals includes a large number of pesticides, two perfluorocarbon compounds (PFCs), and three pharmaceuticals (erythromycin, nitroglycerin, and quinoline).  This list also consists of an array of other chemicals, ranging from those used for industrial manufacturing processes, as plasticizers, or in the production of pharmaceutical and personal care products (PPCPs).

The public should not presume the listing of a chemical or substance indicates it interferes with the endocrine systems of humans or other species simply because it has been listed for screening under the EDSP.  EPA believes that these chemicals or substances should be candidates, at least for screening purposes, under EDSP testing based only on their pesticide registration status and/or because such substances may occur in sources of drinking water to which a substantial population may be exposed.

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