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.

Risk-Screening Environmental Indicators (RSEI) Model

Risk-Screening Environmental Indicators (RSEI) Methodology Version 2.3.5

Detailed information on the data and methods used in the Risk-Screening Environmental Indicators (RSEI) Model Version 2.3.5, January 2017.

You may need Adobe Reader to view files on this page. See EPA’s About PDF page to learn more.