Regarding noise, the report has bad news for wind developers who regularly declare wind
turbine noise limits of 45 or 55 dBA as «safe» and no louder than a library.
In 2011, the Michigan Wind Working Group Technical and Health Committee recommended lowering the state's old
turbine noise limits from 55dBa to 40dBa.
Not exact matches
The consortium points out that the speeds of
turbines on land have to be
limited to minimise
noise, and that the wind flow over water is more constant than over land.
In early March, politicians in Northern Ireland called for better monitoring of
noise as well as
limits on how many wind
turbines could be spread across the landscape.
Lyme, N.Y., Wind Energy Conversion Systems Law [7.5 - MB PDF]-- 1 / 2 - mile setback from property lines, 1 - mile setback from schools, churches, public gathering places; 30 / 35 - dBA +18 - dBC
noise limit at property line Union, Wisc., Large Wind
Turbine Citizens Committee Setback Recommendations Report [24 - MB PDF]
Plympton - Wyoming, Ont.: By - law to provide for the regulation of wind
turbine noise [3.6 - MB PDF]-- infrasound, low - frequency
noise, and amplitude modulation
limits
These include allegations that
turbines cause dizziness, sleeplessness, headaches and other physical symptoms because of the
noise, which is not
limited to audible sound.
Using data without a safety margin, such as mean values for a given
turbine model, measurements from a single
turbine, or «best guess» for future
turbines gives in principle a probability of 50 per cent that the actual erected
turbines will emit more
noise than assumed and that
noise limits will be exceeded.»
He said he believes the township's wind ordinance does not require adequate property - line setbacks or
noise limits for wind
turbines.
Nearby Huron County
limits noise levels from
turbines to an average of 50 decibels from 7 a.m. to 10 p.m. and 45 decibels the rest of the day.
[25] Wind
turbine noise ``... annoyance was found to be statistically related to several self - reporting health effects including, but not
limited to, blood pressure, migraines, tinnitus, dizziness, scores on the PSQI, and perceived stress» as well as related to «measured hair cortisol, systolic and diastolic blood pressure.»
Whilst it is not yet clear that these parameters would adequately protect the health of vulnerable members of the community from the effects of chronic cumulative exposure, why are these
limits for infrasound and low frequency
noise exposure universally ignored by those members of the acoustics profession who have written the wind
turbine noise pollution regulations for governments?