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 This website is no longer updated and links to external websites and some internal pages may not work.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

2018 Consolidated Checklist for C6 40 Code of Federal Regulations (CFR) 265

Consolidated Checklist C6 is divided into five separate documents/computer files specifically for ease of handling its printed and electronic versions. Consolidated Checklist C6 remains one checklist. States must adopt all five portions simultaneously to correctly use this Consolidated Checklist. Please note that the prenotes and endnotes associated with each part have been placed with the part they apply to.

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