air quality

Only six exceedances of ambient air standards recorded in 2016; none recorded in Muscatine

Only six exceedances of National Ambient Air Quality Standards (NAAQS) were recorded in Iowa during 2016 with none in Muscatine – long the state's hot spot for air pollution.

The Iowa Department of Natural Resource's Air Quality Bureau reported four exceedances of ozone standards and two exceedances of PM 2.5 (fine particulate matter smaller than 2.5 microns) standards for last year.

Grain Processing Corp. air pollution controls appear to be solving Muscatine sulfur dioxide problems

Clean air advocates hailed July 15 as "Clean Air Day for Muscatine" when Grain Processing Corporation (GPC) switched from coal to natural gas to fire its boilers.

The boiler conversion – plus a host of other pollution control improvements at the facility – now appear to be making a big difference in the city's air quality.

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