Citation

84 FR 43741

Canonical document for this Federal Register citation.

Air Plan Approval; Iowa; Revisions to Regional Haze Plan and Visibility Requirements in Infrastructure State Implementation Plans for the 2006 PM2.5, 2012 PM2.5, 2010 NO2, 2010 SO2, 2008 Ozone, and 2015 Ozone NAAQS Thursday, August 22, 2019 84 FR 43741