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.

Section 404 of the Clean Water Act

Appendix 2 - Macroinvertebrates

Effects of the activities associated with the Spruce No. 1 Mine on the macroinvertebrate community of receiving streams.

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