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 www.epa.gov. 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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

A Citizen's Guide to Capping

The Citizen's Guide series is a set of 22 fact sheets that summarizes cleanup methods used at Superfund and other sites. This guide details the remediation approach known as "capping." Capping involves placing a cover over contaminated material such as landfill waste or contaminated soil. Such covers are called "caps." This document can also be accessed at https://semspub.epa.gov/work/HQ/158704.pdf.

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