A swine feedlot proposed for Fillmore County in southeastern Minnesota has generated such intense local reaction that state regulators have reopened the period for public comments and, in an unusual step, scheduled a second public meeting to air new environmental research.
"In my 10 years with the agency, this is the first time I've done a second public information meeting for the same project," said Catherine Rofshus, a spokeswoman for the Minnesota Pollution Control Agency (MPCA).
The proposed swine farrowing operation, with 4,890 pigs, wouldn't be huge by Minnesota standards; the state's largest swine feedlot has five times that number.
But it would be the largest animal feedlot of any kind in Fillmore County in terms of animal units — a measure that takes into account the size of the hogs and the amount of manure produced — and it would be located in a region of the state where concerns about groundwater contamination are particularly keen.
Fillmore County is karst country, with unusually porous rock and sink holes, which means that animal manure from feedlots or the fields where the manure is injected as fertilizer can seep down into drinking water very quickly, even within hours.
The feedlot's size is unprecedented for Fillmore County, said Barb Sogn-Frank, factory farm policy organizer for the Land Stewardship Project, a nonprofit advocacy group.
An estimated 15 percent of the private wells in Fillmore County exceed the safe drinking water standard for nitrate, a chemical associated with fertilizer and livestock manure. That's higher than most areas in the state.
Wrestling with growing concerns over the effects of large animal feedlots on the surrounding communities, the MPCA has been rethinking how it engages with the public, Rofshus said.