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.

Residual Risk Assessment for the Industrial Process Cooling Towers Source Category

The purpose of this memorandum is to describe the methodology and results of the residual risk assessment performed for the Industrial Process Cooling Towers (IPCT) source category. The results of this analysis will assist EPA in determining whether a residual risk rule for this source category is appropriate. 

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