September 2022


This month, EM considers some of the challenges for the U.S. Environmental Protection Agency (EPA) during its review of the secondary standards for oxides of nitrogen and sulfur.


 Inside This Month's Issue


Secondary Standards for Oxides of Nitrogen and Sulfur

by Susan S.G. Wierman

Progress Toward Revision of the Secondary Standards for SO2 and NO2
by George M. Hidy

Secondary Standards for NOx and SOx Can Help Protect Natural Resources on Federal Lands

Michael D. Bell, Emmi Felker-Quinn, Linda H. Pardo, Bret A. Schichtel, John C. Vimont, and Jennifer L. Wilkening

Ambient Total Oxidized Nitrogen Monitoring in New York State 

Kevin L. Civerolo, Oliver V. Rattigan, H. Dirk Felton, and James J. Schwab

Chesapeake Bay Program
Karl Blankenship

Also This Month...

PM File: Securities and Exchange Commission Proposes Environmental, Social, and Governance Regulations
by David Elam, Jr.

Message from the President: Connecting with Our Communities

by Nancy E. Meilahn Fowler

In Memoriam: Robert L. Eisenbach, Jr. (1929–2022)

EPA Research Highlights: A Roundup of the Latest U.S. Environmental Protection Agency (EPA) Research

What’s on Tap for 2022?

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