A sneakily fascinating legal response was recently released, in which the State of Vermont Department of Public Service (DPS) responds to request by wind farm neighbor Paul Brouha for relief from noise coming from the Sheffield Wind Farm. Most of the technical back-and-forth amounts to quibbling between sound experts about 1-3dB differences, caused by slightly different monitoring techniques. This minutia matters, in that it may determine whether the Sheffield by project is just barely in compliance or just barely too loud at times; after all, limits are limits. However, as usual in such situations, even if slight adjustments in operations were made to bring the sound levels down 1-3dB, such small changes are unlikely to be change how loud the sounds seems at the home in question (the human ear generally can’t perceive a difference of less than 3dB).
Still, buried in the data at the end of the submission is some interesting data about how often sound levels reach various thresholds in each season. The wind farm company, Vermont Wind, had done some on-the-ground sound monitoring at a location slightly closer than Brouha’s home, and the results shed some light on why some wind farm neighbors may be bothered by the noise.
read more: http://aeinews.org/archives/2919