Środowisko i energia · 06/08/2004

Office of Research and Development; Ambient Air Monitoring Reference and Equivalent Methods: Designation of One New Reference Method for NO2 and Three New Equivalent Methods for PM2.5

Notice is hereby given that the Environmental Protection Agency (EPA) has designated, in accordance with 40 CFR part 53, one new reference method for measuring concentrations of NO 2 , and three new equivalent methods for measuring concentrations of PM 2.5 in ambient air.