From the EPA website:

The Ambient Air Monitoring Group (AAMG), in cooperation with the National Association for Clean Air Agencies (NACAA) and the Association of Air Pollution Control Agencies (AAPCA) will host The National Ambient Air Monitoring Conference,  August 13-16, 2018 in Portland, Oregon. The conference is intended to provide a national and international forum for EPA, state, local, tribal, international and other agencies who are involved in implementing criteria pollutant and air toxicx monitoring programs. This conference will provide a forum for discussing the implementation of ambient air monitoring changes to the monitoring networks as a result of revisions to the NAAQS and ambient air monitoring regulations and a forum for data users to discuss and share information learned as a result of the data analysis and how this data is managed in our Air Quality Data System.

Stop by the Campbell Scientific booth, #215.