An official website of the United States government.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Assessing and Managing Chemicals under TSCA

Support Documents for Prohibiting the Use of Hydrofluoric Acid at Oil Refineries Section 21 Petition

Documents supporting the Section 21 petition submitted by the Public Employees for Environmental Responsibility (PEER).

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.