Rural environments such as ours often have low ambient noise levels, often ranging between 25 – 30 dBA at night. Using standard EPA methodology, statistical analysis has shown that a noise limit of 35dBA is necessary to prevent wide spread complaints and potential litigation. This is similar to the noise limits established in several European nations where industrial wind turbines have operated for decades.
Developers in our region have sought 50dBA noise limits, which have proven inadequate in other areas of Michigan. In fact, citizens in Huron Township, Michigan have initiated litigation on this issue and their local government has reduced the limit to 45dBA.
Here is Industrial Noise Consultant, Rob Rand, speaking during his presentation at the IICC seminar: