EPA has announced the first 10 chemicals it will evaluate for potential risks to human health and the environment under the Toxic Substances Control Act (TSCA). They are: 1,4-Dioxane, 1-Bromopropane, Asbestos, Carbon Tetrachloride, Cyclic Aliphatic Bromide Cluster, Methylene Chloride, N-methylpyrrolidone, Pigment Violet 29, Tetrachloroethylene (also known as perchloroethylene), and Trichloroethylene.