By Jeryl L. Olson, Eric E. Boyd, and Craig B. Simonsen

The U.S. Environmental Protection Agency (EPA) has, in an impressive almost 800 page publication, finalized its fine particulate matter rule to strengthen the National Ambient Air Quality Standard (NAAQS) for fine particles (PM2.5) to 12.0 micrograms per cubic meter (µg/m3). 78 Fed. Reg. 3086 (January 15, 2013). The

Continue Reading EPA Publishes Massive Final Rule on Particulate Matter

By Jeryl L. Olson, Eric E. Boyd, and Craig B. Simonsen

The U.S. Environmental Protection Agency (EPA) will hold two public hearings on its proposed updates to the national ambient air quality standards (NAAQS) for fine particle pollution. 

Concerning the primary standards for fine particles (generally referring to particles less than or equal to 2.5 micrometers (mm) in diameter (PM2.5))

Continue Reading EPA to Hold Public Hearings on Proposed Fine Particulate Matter Standard

By Jeryl L. Olson, Eric E. Boyd, and Craig B. Simonsen

In a not unexpected final rule issued today by the U.S. Environmental Protection Agency (EPA) it has listed the “Chicago-Naperville, IL-IN-WI Nonattainment Area” as marginal nonattainment. 77 Fed. Reg. 34221 (June 11, 2012). The rulemaking promulgates the initial air quality designations for twelve counties in Illinois, Indiana, and Wisconsin

Continue Reading EPA Designates the Chicagoland Area as Marginal Nonattainment for Ozone

By Jeryl J. Olson, Eric E. Boyd, and Craig B. Simonsen

In a September 2, 2011 Presidential statement, President Obama said “after careful consideration, I have requested that Administrator Jackson withdraw the draft Ozone National Ambient Air Quality Standards at this time. Work is already underway to update a 2006 review of the science that will result

Continue Reading Proposed Ozone Standard Withdrawn