On December 18, 2019, Andrea Clements and Bob Vanderpool from EPA's Office of Research and Development presented this webinar highlighting Federal Reference Methods/Federal Equivalent Methods and Air Sensors: Complementary Approaches for Determining Ambient Air Quality. The webinar focused on the relative advantages and disadvantages of the regulatory FRM/FEM instruments and of the sensor-based instruments used for non-regulatory monitoring. The complementary nature of these two measurement approaches was discussed for determining ambient air quality based on specific monitoring objectives. 

• FRMs/FEMs and Air Sensors Webinar Slides (PDF)(27 pp, 3 MB)