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An analysis of the American/Canadian Wind Energy Association report regarding effects of turbine sound on human health
January 11, 2010
by The Society for Wind Vigilance
Wind Turbine Sound and Health Effects, An Expert Panel Review (A/CanWEA Panel Review) was prepared for and sponsored by the American Wind Energy Association
(AWEA) and the Canadian Wind Energy Association (CanWEA).
In response, an analysis was conducted by The Society for Wind Vigilance of the A/CanWEA Panel Review. Details of the analysis are explained in this report. For convenience the remainder of the analysis and critique is done in a tabulated format of point - counterpoint. The volume of material necessitated this approach and hopefully will enhance the clarity of the critique being put forward.
The method utilized was to excerpt each of the claims and place it in the context of authoritative and contrary information. In addition an effort has been made to identify the errors of omission as well as those of commission.
Highland County Supervisors liable for non-compliance with Endangered Species Act - letter
December 28, 2009
by James T. Rodier
Wood Rogers PLC, the Roanoke law firm representing Highland Citizens, has advised the Highland County Board of Supervisors that allowing Highland New Wind Development to proceed without the Incidental Take Permit (ITP) required by the Endangered Species Act will place the county in legal jeopardy. The letter by Attorney James T. Rodier which details the supporting law can be accessed by clicking on the link(s) at the bottom of this page.
In his letter dated Dec. 22, 2009 Vermont Fish and Wildlife community ecologist Eric Sorenson details why the Vermont Community Wind Farm proposed for western Vermont would have "an undue adverse effect" on the area. The project could have as many as 45 wind turbines sited along several ridgelines.
On December 10, 2009, Attorney Rufus Brown made this filing to the Maine Board of Environmental Protection in the appeal of the Record Hill Wind Project. ...As part of this filing, Attorney Brown submits newly discovered evidence of correspondence between Dora Mills, M.D., Director of the Maine Center for Disease Control ("MCDC") and the Maine DEP, which he states suggests "the review input from MCDC in the Record Hill permitting process was tainted with a political agenda rather than being from an objective evaluation for the protection of public health."
In 2006 the UK Government published a crucial report on wind turbine noise and its effects on nearby residents. The study, conducted by acoustics noise and vibration consultants Hayes McKenzie Partnership (HMP), has since been used to support the position that existing Government wind farm noise guidelines were adequate and that there are no health ramifications of turbine noise at neighbouring dwellings. Mr. Mike Hulme of the Den Brook Judicial Review Group, a group of local residents opposing a wind turbine development close to their houses in Devon in the UK, submitted a Freedom of Information (FOI) request asking to see all draft versions of the Hayes McKenzie Partnership (HMP). The documents were finally released to Mr. Hulme and they reveal that the final published report silently removed earlier recommendations on noise. A summary of Mr. Hulme's findings, including three drafts of the study report can be accessed by clicking on the links at the bottom of this page.
Causes of bat fatalities at wind turbines: Hypotheses and Predictions
November, 2009
by Paul M. Cryan and Robert M. R. Barclay
Thousands of industrial-scale wind turbines are being built across the world each year to meet the growing demand for sustainable energy. Bats of certain species are dying at wind turbines in unprecedented numbers. Species of bats consistently affected by turbines tend to be those that rely on trees as roosts and most migrate long distances. Although considerable progress has been made in recent years toward better understanding the problem, the causes of bat fatalities at turbines remain unclear. In this synthesis, we review hypothesized causes of bat fatalities at turbines. Hypotheses of cause fall into 2 general categories—proximate and ultimate. Proximate causes explain the direct means by which bats die at turbines and include collision with towers and rotating blades, and barotrauma. Ultimate causes explain why bats come close to turbines and include 3 general types: random collisions, coincidental collisions, and collisions that result from attraction of bats to turbines. The random collision hypothesis posits that interactions between bats and turbines are random events and that fatalities are representative of the bats present at a site. Coincidental hypotheses posit that certain aspects of bat distribution or behavior put them at risk of collision and include aggregation during migration and seasonal increases in flight activity associated with feeding or mating. A surprising number of attraction hypotheses suggest that bats might be attracted to turbines out of curiosity, misperception, or as potential feeding, roosting, flocking, and mating opportunities. Identifying, prioritizing, and testing hypothesized causes of bat collisions with wind turbines are vital steps toward developing practical solutions to the problem.
The expressions “Environmental Sustainability” and “Resource Management” may seem to be synonymous. In the original concept this could have been the intent, but now that we have in operation a number of alternative energy sources to offset the use of fossil fuels, unforeseen emissions may be affecting local communities in the vicinity with the possibility of public health being compromised. Wind farms are an alternative energy source and the effects of noise emissions on the health of people living within several kilometres of the wind farms is becoming a concern. The noise level from a wind farm may be quite low, but its characteristics compared to that of the normal background sound make it stand out as something quite different, and its ability to excite room resonances makes it an irritant causing severe loss of sleep and extreme annoyance. Often the sounds are heard more clearly indoors than outside. New Zealand Standard 6808 on the noise from wind turbines has been reviewed and a new draft standard produced for public comment. The draft differs little from the existing standard and closely follows that used in Britain and parts of Europe, even though there are clear indications that the criteria to be met do not fully conform with World Health Organization recommendations, and the methodology used is likely mathematically, scientifically and ethically wrong. The draft and similar standards across the world are clearly biased towards wind farm development for as little cost as possible, and it appears public health concerns are not being given enough attention.
USFWS comments on Pinnacle Wind Power Project
November 6, 2009
by Deborah Carter, USFWS Field Supervisor
US Fish and Wildlife Service, Wet Virginia field office, issued these comments regarding the Pinnacle wind power project proposed for ridgelines in Mineral County, WV. The comments pertain to the Habitat Characterization and Assessment of Rare, Threatened, and Endangered Species for the Pinnacle Wind Farm (BHE Environmental 2009a); the Avian Risk Assessment for the Pinnacle Wind Power Project (Kerlinger 2009); and the Bat Risk Assessment: Pinnacle Wind Farm (BHE Environmental 2009b). Excerpts of the letter are provided below. The full report can be accessed by clicking on the link at the bottom of the page.
The WHO Regional Office for Europe launched these updated Night noise guidelines for Europe. The guidelines provide ground-breaking evidence on how exposure to night noise can damage people's health, and recommends guideline levels to protect health.
The new limit is an annual average night exposure not exceeding 40 decibels (dB), corresponding to the sound from a quiet street in a residential area. Sleepers that are exposed to higher levels over the year can suffer mild health effects, such as sleep disturbance and insomnia. Long-term average exposure to levels above 55 dB, similar to the noise from a busy street, can trigger elevated blood pressure and heart attacks. One in five Europeans is regularly exposed to such noise levels. A summary of the findings is provided below. Click on the link to access the full document.
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