An official website of the United States government.

We've made some changes to EPA.gov. 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.

ATTAINS-How to Apply TMDL Action to Assessments

This explains how to apply an Action to an Assessment.  The example uses a TMDL Action, and applies it so that the Assessment Unit and Parameter combination calculates as EPA IR Category 4a.  The steps for applying other types of Actions are the same, but the EPA IR Category result may be different. 

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