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.

Memorandum of Clarification Regarding Use of SW-846 Methods

The purpose of this memorandum is to set forth the guidance as a clarification to SW-846 for reference and distribution to the States and to other interested parties, including laboratories and the regulated community. 

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