Unlike typical industrial noise sources, measurement of noise from wind turbines raises technical challenges. Typical noise measurement protocols call for no wind during noise measurements since background wind will result in inaccurate measurements. However in the case of wind turbines, wind must be present for them to operate.
The current science available for measuring noise emanating from wind turbines is technically challenging, resource intensive and will still result in measurements which are difficult to reproduce and/or interpret.
There is currently no scientifically accepted field methodology to measure wind turbine noise to determine compliance or to determine non compliance with a Certificate of Approval limits.
They admit that they can’t accurately measure or properly monitor noise. Why are rules based on noise levels? Why are methods to decrease setbacks based on noise models? Consultants who created these rules must have known that they were creating criteria that would not be measured. If police believed that since people drive differently in different traffic conditions they had to somehow accommodate for that by showing how the speeder’s speed changes with traffic conditions in order to issue a speeding ticket they would never get their job done either.
The Ministry of the Environment admits they will not enforce the rules. This statement basically absolves them of any responsibility on acting on complaints. This incompetence amounts to criminal neglect of families who are now exhibiting health problems.