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Forthbank Wind Energy Development
Table 8.11 Exceedences of the ETSU-R-97 Derived Day-time Criterion Curves by the
Predicted L A90,T Wind Farm Noise Immission Levels (dB) at Each Noise Assessment
Location. Exceedences with negative values indicate the immission level is below the limit.
Property
Wind Speed at 10m Height, m/s
3 4 5 6 7 8 9 10 11 12
Park Farm -8.5 -4.9 -3.5 -3.1 -5.3 -8.3 -8.3 -8.3 -8.3 -8.3
Dunmore Home Farm -12.3 -9.7 -8.7 -9.2 -11.9 -13.5 -13.5 -13.5 -13.5 -13.5
13 Riverside View -10.8 -8.5 -6.6 -5.0 -5.0 -5.1 -5.1 -5.1 -5.1 -5.1
Inch of Ferryton -10.0 -6.4 -5.0 -4.7 -6.9 -9.9 -9.9 -9.9 -9.9 -9.9
Craigrie -11.3 -7.7 -6.3 -6.0 -8.2 -11.2 -11.2 -11.2 -11.2 -11.2
Dunmore East -11.4 -8.8 -7.8 -8.3 -11.0 -12.6 -12.6 -12.6 -12.6 -12.6
Dunmore Town -12.5 -9.9 -8.9 -9.4 -12.1 -13.7 -13.7 -13.7 -13.7 -13.7
Bowhouse Gardens -11.8 -9.5 -7.6 -6.0 -6.1 -6.2 -6.2 -6.2 -6.2 -6.2
South Alloa -18.8 -16.5 -14.6 -13.0 -13.0 -13.1 -13.1 -13.1 -13.1 -13.1
12 Riverside View -12.1 -9.9 -8.0 -6.3 -6.4 -6.5 -6.5 -6.5 -6.5 -6.5
Table 8.12 Exceedences of the ETSU-R-97 Derived Night-time Criterion Curves by the
Predicted L A90,T Wind Farm Noise Immission Levels (dB) at Each Noise Assessment
Location. Exceedences with negative values indicate the immission level is below the limit.
Property
Wind Speed at 10m Height, m/s
3 4 5 6 7 8 9 10 11 12
Park Farm -16.5 -12.5 -9.0 -6.0 -5.0 -4.5 -4.5 -4.5 -4.5 -4.5
Dunmore Home Farm -18.4 -14.4 -10.9 -7.9 -6.9 -6.4 -6.4 -6.4 -6.4 -6.4
13 Riverside View -13.2 -9.2 -5.7 -2.7 -1.7 -1.2 -1.2 -1.2 -1.2 -1.2
Inch of Ferryton -18.0 -14.0 -10.5 -7.5 -6.5 -6.0 -6.0 -6.0 -6.0 -6.0
Craigrie -19.3 -15.3 -11.8 -8.8 -7.8 -7.3 -7.3 -7.3 -7.3 -7.3
Dunmore East -17.6 -13.6 -10.1 -7.1 -6.1 -5.6 -5.6 -5.6 -5.6 -5.6
Dunmore Town -18.7 -14.7 -11.2 -8.2 -7.2 -6.7 -6.7 -6.7 -6.7 -6.7
Bowhouse Gardens -14.3 -10.3 -6.8 -3.8 -2.8 -2.3 -2.3 -2.3 -2.3 -2.3
South Alloa -21.2 -17.2 -13.7 -10.7 -9.7 -9.2 -9.2 -9.2 -9.2 -9.2
12 Riverside View -14.6 -10.6 -7.1 -4.1 -3.1 -2.6 -2.6 -2.6 -2.6 -2.6
8.7.4 Tables 8.13 to Table 8.15 respectively show that the predicted wind farm noise immission
levels at Dunmore East, Park Farm and 13 Riverside View meet the day and night-time
ETSU-R-97 derived noise limits in under all wind speeds, based on a lower day-time limit of
35 dB(A).
Table 8.13 Dunmore East Predicted Wind Farm Noise Immission Levels, ETSU-R-97
Day-time and Night-time Limits Derived from Dunmore Home Farm, and the Associated
Immission and Limit Margins (negative margins indicate the immission level is below the
limit). All levels L A90,T
Description
Wind Speed at 10m Height, m/s
3 4 5 6 7 8 9 10 11 12
Predicted noise 25.5 29.5 33.0 36.0 37.0 37.5 37.5 37.5 37.5 37.5
Day-time limit 36.9 38.3 40.8 44.3 48.0 50.1 50.1 50.1 50.1 50.1
Night-time limit 43.0 43.0 43.0 43.0 43.0 43.0 43.0 43.0 43.0 43.0
Day-time limit margin -11.4 -8.8 -7.8 -8.3 -11.0 -12.6 -12.6 -12.6 -12.6 -12.6
Night-time limit margin -17.6 -13.6 -10.1 -7.1 -6.1 -5.6 -5.6 -5.6 -5.6 -5.6
Table 8.14 Park Farm Predicted Wind Farm Noise Immission Levels, ETSU-R-97 Daytime
and Night-time Limits, and the Associated Immission and Limit Margins (negative
margins indicate the immission level is below the limit). All levels L A90,T
Description
Wind Speed at 10m Height, m/s
3 4 5 6 7 8 9 10 11 12
Predicted noise 26.6 30.6 34.1 37.1 38.1 38.6 38.6 38.6 38.6 38.6
Day-time limit 35.0 35.4 37.5 40.2 43.4 46.9 46.9 46.9 46.9 46.9
Night-time limit 43.0 43.0 43.0 43.0 43.0 43.0 43.0 43.0 43.0 43.0
Day-time limit margin -8.5 -4.9 -3.5 -3.1 -5.3 -8.3 -8.3 -8.3 -8.3 -8.3
Night-time limit margin -16.5 -12.5 -9.0 -6.0 -5.0 -4.5 -4.5 -4.5 -4.5 -4.5
November 2010 Chapter 8 Page 18
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