An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Hazardous Substance Spill Prevention Letter of Intent

Under the Clean Water Act (CWA), EPA has responsibility for the prevention of hazardous substance spills very much like the prevention of oil spills. This letter of intent indicates EPA's intention to initiate a rulemaking pursuant to CWA section 311(j)(l)(C). This section provides that EPA establish "procedures, methods, and equipment and other requirements for equipment to prevent discharges of...hazardous substances from...onshore...facilities and to contain such discharges."

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