Sarah McKenzie

Tracking air toxins


City leaders are working on several initiatives to improve the city’s air quality as the U.S. Environmental Protection Agency considers setting a new standard for the level of ground-level ozone in the air as part of the Clean Air Act.

Besides ground-level ozone, the EPA sets national air quality standards for particulate matter, carbon monoxide, sulfur oxides, nitrogen oxides and lead. The new standard for ground-level ozone is expected to be reduced from 75 parts per billion (ppb) to 65 or 70 ppb.


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