Some Kansas farmers and lawmakers say they are concerned how a federal review of dust emissions might affect the family farm. The Environmental Protection Agency is reviewing airborne pollutant standards, which includes dust, as required by the Clean Air Act. A draft released by the EPA in July would tighten air particle standards from 150 micrograms per cubic meter to between 65 and 85 micrograms. Mark Smith, president of the Kansas Livestock Association, tells The Hutchinson News that it would be nearly impossible for farmers to meet such low levels. The American Lung Association is among those supporting stricter dust limits.