Farm groups routinely see EPA as intruding into agriculture and private property.
The head of the Environmental Protection Agency (EPA) says she will decide in July whether to tighten U.S. controls on dust, an issue that has stirred fear in farm country of costly federal regulation.
Livestock and farm groups say it would be impossible to comply with stricter standards on exposure to dust, which they say is a natural part of farming. EPA regulates dust, formally described as particulate matter, under anti-pollution laws.
"It's my decision to make a final recommendation. That'll happen in July," EPA Administrator Lisa Jackson told reporters on Tuesday after a tour of two farms and a biodiesel plant in central Iowa.
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