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.

Chapter One of the SW-846 Compendium: Project Quality Assurance and Quality Control

The goal of this chapter is to provide an understanding of environmental data and the need for quality. EPA has developed numerous guidance documents on quality assurance. This chapter is not intended to summarize EPA guidance. Instead, this chapter will provide familiarity with regulations and guidance relating to quality assurance and where to find them.

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