The Center for Biological Diversity (CBD) and allied groups are petitioning EPA to set “increments,” the maximum allowable increases in pollution, for nitrogen dioxide (NO2) and sulfur dioxide (SO2) under the national ambient air quality standards (NAAQS) for those pollutants, years after the group claims EPA should have done so. In their Oct. 4 petition for rulemaking, CBD, Public Employees for Environmental Responsibility (PEER) and Sierra Club say that EPA must establish the required increments with respect to EPA’s 1-hour…
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