Note: EPA no longer updates this information, but it may be useful as a reference or resource.

Contents

Disclaimer

The Environmental Law Institute (ELI) is a not-for-profit research, training and education organization. ELI does not litigate or lobby. It works to develop and apply environmental and public health strategies that make laws more effective.

This project has been funded wholly or in part by the U.S. Environmental Protection Agency under assistance agreement to the Environmental Law Institute. It has been subjected to the Agency's review. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.

Editor's Note: This on-line version of the printed document reflects minor changes in terminology.

Additional Resources

Additional Indoor Air Quality resources on Asthma, Secondhand Smoke, Schools, Large Buildings and Homes can be found at our Indoor Air Publications site .