Zoning Board of Appeals Hearing

The Peoria County Zoning Board of Appeals held a hearing on September 19, 2026, focused primarily on the sound study and noise impact assessment related to the proposed Four Creeks Wind Farm project. The meeting featured detailed testimony from Gabriel Wager, an acoustics expert from Burns McDonald, who presented sound modeling data, including noise levels at various octave bands and compliance with Illinois Pollution Control Board (IPCB) noise regulations. Discussions included the methodology of sound propagation modeling, mitigation measures such as noise reduction turbine modes and blade modifications, and the classification of land use (Class A residential vs. Class C agricultural) for noise impact assessment. Cross-examination raised concerns about the timing and completeness of submitted mitigation data, the accuracy of noise modeling at property lines, and the potential for noise pollution and annoyance beyond numerical limits. The hearing also addressed procedural matters, scheduling of future sessions, and public comments expressing concerns about enforcement and long-term noise effects. No contract awards or procurement decisions were made during this session.