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.

Office of Inspector General

Report: EPA Needs to Direct More Attention, Efforts, and Funding to Enhance Its Speciation Monitoring Program for Measuring Fine Particulate Matter

Report #2005-P-00004February 7, 2005

What Was Found

EPA has made substantial progress in establishing a speciation monitoring network, but still faces a number of challenges in ensuring that the controls are implemented at the right sources.

Report Materials

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