An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Indoor Air Quality (IAQ)

Building Assessment Survey and Evaluation Study: Quality Assurance Project Plan

This supplement describes QA/QC aspects of the implementation of the Office of Radiation and Indoor Air's BASE protocol including: recruitment of study buildings, execution of field studies in each building, and the processing and coordination of each building's ata for final submittal to EPA.

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