Study says wind turbines meet all established noise limits
The following text is taken from pages 5 and 6 of the 34-page report.
The complete report is public record and available on this PSC website link:
“The test engineers did not observe any adverse character or tones from the wind turbines at the measurement locations near residences. The author did not witness any often described ‘whoosh-whoosh’ character except when very close (50 ft) from a turbine. The whoosh-whoosh is observed when each blade visually passes the 9:00 o’clock position.
It is clear from the plots that the Blue Sky Green Field wind turbines do not generate significant LFN.” (low frequency noise)
Based on the presented data and analysis, we conclude that the BSGF wind turbine project meets all established noise limits and design goal for the project. Health effects in the form of sleep interference and low frequency noise level issues are addressed and it is concluded there should not be adverse response caused by these issues. Annoyance to low-level, but audible noise is not predictable and may depend on non-technical factors in addition to measured sound levels.”
Report Prepared by:
Hessler and Associates, Inc.
Consultants in Engineering Acoustics
3862 Clifton Manor Place Suite B
Haymarket, VA 20169