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Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to 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.

Ambient Monitoring Technology Information Center (AMTIC)

Ambient Air Monitoring Listserv

The Ambient Air Monitoring Group maintains a mailing list or listserv. The purpose of this listserv is to provide improved communication within and among the various EPA Offices, State/Local and Tribal agencies, and others interested in the ambient air monitoring program. We use this listserv to communicate: (1) newsletters; (2) conferences and notes/presentations; (3) work group meetings and notes and; (4) any new information/technology that may be of interest to the ambient air monitoring community.

To join the Ambient Air Monitoring Listserv send an email to

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