Environmental groups spoke out this week against a third attempt to open an 11,600-head cattle feedlot near Monona. The public meeting Monday was over the nutrient management plan submitted by Supreme Beef, owned by Mike Walz, Dean Walz and Jared Walz. The men have been trying to open a feedlot on the site since 2017, but the proposal has met ongoing opposition from some neighbors and environmentalists concerned about the 34.5 million gallons a year of manure coming from the feedlot polluting streams and groundwater.