Camilty Wind Farm - Partnerships for Renewables

Camilty Wind Farm
Chart 8.24: Whistle Lodge - Operational noise assessment
55
50
45
LA90,10min (dB)
40
35
30
25
20
Cumulative operational noise
Prevailing background (Quiet Daytime)
Prevailing background (Night time)
Operational limits (Quiet Daytime)
Operational limits (Night time)
4 5 6 7 8 9 10 11 12
Wind speed (m/s)
8.8.4 The results of the assessment show that, at most locations, the cumulative noise levels will
not exceed the derived operational day and night time limits. The only exception to this is at
the NSR Harburnhead during the daytime.
8.8.5 The closest turbines of the Harburnhead wind farm are in close proximity to this NSR and
therefore the daytime limits at wind speeds around 7-8m/s are predicted to be almost
exclusively taken up by the Harburnhead scheme. Therefore, the daytime limit is exceeded
by the cumulative prediction at these wind speeds. This is the case regardless of whether the
fixed part of the quiet daytime limit is taken to be 40dB(A), as selected by the author of the
Harburnhead ES chapter, or 35dB(A) as selected for the assessment of the Camilty
proposals.
8.8.6 The Harburnhead Wind Farm assessor has set a quiet daytime limit of 40dB(A) at 7m/s. The
predicted Harburnhead wind farm scheme operational level at this location is 39.9dB(A). In
order not to exceed this limit cumulatively, the proposed Camilty wind farm could add only
23.6dB(A), as opposed to the 35.8dB at 7m/s predicted. As Harburnhead is one of the closest
properties to the proposed wind farm at Camilty, this limited contribution is not achievable.
8.8.7 The following Chart 8.25 explores the difference in cumulative noise levels at Harburnhead
should either a combination of Harburnhead wind farm and Camilty wind farm or Fauch Hill
wind farm and Camilty wind farm be consented as opposed to all 3 schemes operating
simultaneously.
March 2013 8-33 ES Chapter 8
Noise
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