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Board adopts floodplain ordinance and clears way for Alliant Energy generator permit
Summary
Des Moines County adopted Floodplain Ordinance #25 and approved Resolution #2026-025, which grants the Land Use Administrator authority to approve Zoning Permit ZDP-26-06 for a natural gas-powered RICE generator at Alliant Energy's Sullivan Slough Road plant following a Major Site Plan Review finding of compliance.
The Des Moines County Board of Supervisors approved the third reading of Floodplain Ordinance #25 and adopted Resolution #2026-025 on April 21, clearing a procedural step for Interstate Power and Light Company's application to site a natural gas-powered reciprocating internal combustion engine (RICE) generator at the Alliant Energy plant on Sullivan Slough Road.
The resolution records that the zoning permit application (ZDP-26-06) is for the generator at 4282 Sullivan Slough Road and states the proposed use is permitted in the county’s I-1 Industrial District only after a Major Site Plan Review. The Des Moines County Zoning Commission conducted that Major Site Plan Review on March 31, 2026, and found the project in compliance with applicable requirements. The board’s resolution grants the Land Use Administrator authority to approve the permit as submitted without imposing additional conditions.
Member Jim Cary moved to approve the third reading of Ordinance #25; Vice Chair Tom Broeker seconded the motion. The board’s action was recorded in Resolution #2026-025.
No conditions or amendments to the permit were imposed by the board in the resolution. The item’s procedural history in the record notes the Zoning Commission’s March 31 review as the basis for the board’s decision.
