Apr 29BlogEPA Proposes Revised Secondary National Ambient Air Quality Standard for SO2 for 1st Time Since ‘71On April 15, EPA proposed to retain the secondary NAAQS for oxides of nitrogen and particulate matter, while revising the SO2 NAAQS.
Feb 20BlogNew Designated Non-Attainment Area for SO2 in Western PA? That’s What EPA's Proposing - But is it Too Late to Make a Difference?The U.S. Environmental Protection Agency (EPA) earlier this month announced a proposal that - if approved - would mean four...