Nitrogen Dioxide (NO2) Primary Standards - Planning Documents from Current Review

Planning documents in NAAQS reviews generally include the Integrated Review Plan.

IRP for the Primary Nitrogen Oxides NAAQS Review. Volume 1: Background Document (pdf) (1.21 MB, March 2024)

IRP for the Primary Nitrogen Oxides NAAQS Review. Volume 2: Planning for the Review and the Integrated Science Assessment (pdf) (3.61 MB, March 2024)

You may also be interested in other documents from the current nitrogen dioxide NAAQS review.