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.

Environmental Measurement

Method Validation and Peer Review Policies and Guidelines

All methods of analysis must be validated and peer reviewed prior to being issued. Each EPA office is responsible for ensuring minimum method validation and peer review criteria have been achieved. These documents describe general principles for determining and demonstrating that an analysis method is suitable for its intended purpose (i.e., yields acceptable accuracy for the analyte, matrix and concentration range of concern). 

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