Regulacje i polityka gospodarcza · 08/12/2009

EPA Proposes Revised Sulfur Dioxide Air Quality Standard

The Environmental Protection Agency (EPA) is proposing to revise the primary national ambient air quality standard for sulfur dioxide (SO2) to provide adequate protection of public health with a margin of safety, setting a new standard of 50-100 parts per billion (ppb) based on 1-hour daily maximum concentrations.