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 This website is no longer updated and links to external websites and some internal pages may not work.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

Ambient Monitoring Technology Information Center (AMTIC)

Lead Audit Strip Preparation

This page contains information on methods for the preperation of lead (Pb) audit strips for use in the Lead NAAQS monitoring network.  This page is intended to assist state, local, and tribal monitoring agencies as they implement the Pb NAAQS monitoring requirements. 

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