Peoria County Zoning Board of Appeals Hearing

The Peoria County Zoning Board of Appeals held a hearing on September 28, 2026, focused primarily on the noise study and compliance related to a wind turbine project. The discussion centered on the sound levels predicted at residential properties, the classification of land use (Class A, B, or C), and whether the project met Illinois Pollution Control Board (IPCB) noise regulations. Key procurement-related topics included the iterative mitigation methods applied to turbines to reduce noise output, such as serrated trailing edges and low-noise operating modes, which impact turbine power output. The witness testified that over 90% of turbines required mitigation to comply with noise limits, and that post-construction monitoring would be necessary to verify compliance, with associated costs borne by the applicant. The hearing also addressed the adequacy of application materials, including maps and tables showing turbine locations and noise contours, with objections raised about late amendments to the application. The board discussed the need for clear documentation and monitoring to ensure ongoing compliance with noise regulations.