Health effects expected in rural Canada
Industrial wind turbines are sited in proximity to
Canadian homes to enable access to transmission
infrastructure. Internal correspondence from the
Ontario Ministry of the Environment, obtained
through a freedom-of-information request, states,
“It appears compliance with the minimum setbacks
and the noise study approach currently
being used to approve the siting of WTGs [wind
turbine generators] will result or likely result in
adverse effects ....”
A report commissioned by the Ontario Ministry
of the Environment concluded that the sound from
wind turbines, at the levels experienced at typical
receptor distances in Ontario, was
... expected to result in a non-trivial percentage of persons being
highly annoyed ... research has shown that annoyance associated
with sound from wind turbines can be expected to contribute
to stress related health impacts in some persons.38
Noise annoyance in rural Canada is extremely
low. Canadian communities with populations of
less than 5000 report that about 70% are “not at all
annoyed” by noise outside their home.
Health Canada’s examination of the scientific
literature on noise from IWTs determined the
health effect “conclusively demonstrated” from
exposure to wind turbine noise is an increase of
self-reported general annoyance and complaints
(i.e., headaches, nausea, tinnitus and vertigo).
Members of Health Canada’s Consumer and Clinical
Radiation Protection Bureau propose a sound
limit of 45 dBA for IWTs and predict an increase
in the percentage of Canadians highly annoyed by
noise from IWTs.
A noise immission level of 45 dBA from IWTs
can be expected to result in “... less than 14% of the
exposed population to be highly annoyed indoors by
wind turbines and less than 29% to be highly
annoyed outdoors.”
There is a greater expectation for, and value
placed on, “peace and quiet” in quiet rural settings.
Such settings in Ontario can have ambient
sound levels below 30 dBA. Annoyance from IWT
noise starts at dBA sound pressure levels in the low
30s and rises sharply at 35 dBA. Research suggests
that IWT noise limits should be set at 32 dBA
outside residences. A 2010 memorandum of the
Ontario Ministry of the Environment recommended
Health effects expected in rural Canada
Industrial wind turbines are sited in proximity to
Canadian homes to enable access to transmission
infrastructure. Internal correspondence from the
Ontario Ministry of the Environment, obtained
through a freedom-of-information request, states,
“It appears compliance with the minimum setbacks
and the noise study approach currently
being used to approve the siting of WTGs [wind
turbine generators] will result or likely result in
adverse effects ....”
A report commissioned by the Ontario Ministry
of the Environment concluded that the sound from
wind turbines, at the levels experienced at typical
receptor distances in Ontario, was
... expected to result in a non-trivial percentage of persons being
highly annoyed ... research has shown that annoyance associated
with sound from wind turbines can be expected to contribute
to stress related health impacts in some persons.38
Noise annoyance in rural Canada is extremely
low. Canadian communities with populations of
less than 5000 report that about 70% are “not at all
annoyed” by noise outside their home.
Health Canada’s examination of the scientific
literature on noise from IWTs determined the
health effect “conclusively demonstrated” from
exposure to wind turbine noise is an increase of
self-reported general annoyance and complaints
(i.e., headaches, nausea, tinnitus and vertigo).
Members of Health Canada’s Consumer and Clinical
Radiation Protection Bureau propose a sound
limit of 45 dBA for IWTs and predict an increase
in the percentage of Canadians highly annoyed by
noise from IWTs.
A noise immission level of 45 dBA from IWTs
can be expected to result in “... less than 14% of the
exposed population to be highly annoyed indoors by
wind turbines and less than 29% to be highly
annoyed outdoors.”
There is a greater expectation for, and value
placed on, “peace and quiet” in quiet rural settings.
Such settings in Ontario can have ambient
sound levels below 30 dBA. Annoyance from IWT
noise starts at dBA sound pressure levels in the low
30s and rises sharply at 35 dBA. Research suggests
that IWT noise limits should be set at 32 dBA
outside residences. A 2010 memorandum of the
Ontario Ministry of the Environment recommended
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