EPA Plans To Retool Air Pollution Index

Law360, New York (January 15, 2009, 12:00 AM EST) -- U.S. regulators on Thursday proposed updating air pollution ratings so that the Air Quality Index accurately reflects the dangers high levels of fine particle matter pose to public health.

The U.S. Environmental Protection Agency envisions recalibrating the widely observed index and introducing stricter thresholds, and by extension public safeguards, for fine particle pollution.

The proposed changes, to be adopted depending on the outcome of a 60-day public comment period, revise current concentration thresholds for what is considered harmless, unhealthy for sensitive groups and generally unhealthy....
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