Camilty Wind Farm - Partnerships for Renewables

Camilty Wind Farm - Partnerships for Renewables Camilty Wind Farm - Partnerships for Renewables

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Camilty Wind Farm Prevailing Background Noise Levels at all Properties to be used as Proxies 8.3.37 Tables 8.2 and 8.3 respectively summarise the results of the quiet daytime and night time baseline noise monitoring (L A90,10min ) undertaken at Parkview Cottages (Charts 8.1 and 8.2 above) as well as the quiet daytime and night time prevailing background noise levels at each wind speed for Harburnhead 3 , Aberlyn 4 and Halfwayhouse 5 extracted from the Harburnhead and Fauch Hill ES Chapters (Appendix 8.6). Table 8.2 Prevailing Quiet Daytime Background Noise Levels (LA90,10min) (dB) Derived from Baseline Noise Surveys Monitoring location Wind speed (m/s) derived to 10 m above local ground height 4 5 6 7 8 9 10 11 12 Parkview Cottages 31 32 34 35 37 40 42 45 47 Harburnhead 28 30 32 35 38 41 44 46 48 Aberlyn 33 35 38 42 46 47 47 47 47 Halfwayhouse 34 34 34 36 37 40 43 47 51 Table 8.3 Prevailing Night Time Background Noise Levels (LA90,10min) (dB) Derived from Baseline Noise Surveys Monitoring location Wind speed (m/s) derived to 10 m above local ground height 4 5 6 7 8 9 10 11 12 Parkview Cottages 27 29 30 33 35 38 41 44 48 Harburnhead 23 25 28 32 35 39 43 46 49 Aberlyn 28 30 34 39 44 47 47 47 47 Halfwayhouse 28 30 32 34 37 39 41 42 42 8.3.38 These prevailing quiet day and night time background noise levels have been used to derive appropriate operational noise limits at each wind speed, against which the predicted scheme and cumulative operational noise levels have been assessed. This assessment is discussed in detail later in this chapter. 8.4 Topic Specific Design Evolution 8.4.1 As described in Chapter 3: Design Evolution, an initial buffer of 750 m was placed on all identified residential properties in order to minimise the likelihood of potential NSRs experiencing significant noise effects from the operational turbines. 3 Harburnhead Windfarm ES Table 12.5 Prevailing background noise levels 4 Harburnhead Windfarm ES Table 12.5 Prevailing background noise levels 5 Fauch Hill Windfarm ES Figures 9.6 & 9.7 March 2013 8-11 ES Chapter 8 Noise Copyright Partnerships for Renewables Development Co. Ltd 2013 ©

Camilty Wind Farm 8.4.2 The proprietary noise modelling software SoundPLAN was used to predict scheme operational noise levels at each of the identified NSR (Table 8.1) at a height of 4 m above local ground height; no topographical information was incorporated into the model and a ground absorption value of G=0 was assumed. The noise immission modelling for Camilty wind farm considers a candidate wind turbine, the Nordex N100 2.5MW of hub height 80 m. 8.4.3 Agreement was reached with WLC on standards for assessment and methodology, particularly with respect to establishing prevailing background noise levels. 8.4.4 A technical workshop was held on 26 July 2012, which incorporated all the views and assessment requirements of the appointed EIA specialists (landscape, cultural heritage, ecology, hydrology and ornithology as well as noise), the purpose of which was to refine the proposals to satisfy all requirements. 8.4.5 This workshop considered not only the environmental effects associated with the proposed scheme but also the cumulative effects of other proposed wind energy development in the vicinity of Camilty wind farm, specifically Harburnhead and Fauch Hill wind farms. 8.4.6 It was found that, at the Harburnhead NSR, the proposed wind farm could comply with the derived limits in isolation. However, it was clear that all three schemes were unlikely to be able to operate simultaneously and meet the limits derived from the baseline information. This cumulative issue was discussed with WLC and it was agreed that the scheme and cumulative information should be presented separately to allow direct comparison between the proposals for each of the 3 adjacent wind farms. This is discussed in more detail later in this Chapter. 8.5 Potential Significant Effects of the Scheme Prior to Mitigation 8.5.1 The proposed development comprises 6 wind turbines, a control building and substation, an anemometry mast, a temporary construction compound and amended vehicular access on to site. A description of the proposed development is presented in Chapter 4: Project Description. 8.5.2 The following sections assess the likelihood of significant effects associated with noise during the construction and operational phases of the development. Construction Effects Construction Traffic 8.5.3 Abnormal loads transporting turbine components (wind turbine blades, nacelles and tower components) will follow a predefined route to the site (see Chapter 7: Traffic and Transport for a description of the abnormal load route). Turbine components will be transported to the site by a specialist heavy haulage contractor. 8.5.4 As identified in Chapter 7: Traffic and Transport, there would be up to 78 abnormal loads transporting turbine components to the proposed wind farm site over the course of the construction period. Although it is inevitable that these heavy vehicle pass-by events will be noticeable in comparison to the composition of existing typical traffic flows, they will be rare and necessary events which will be scheduled along specific routes. On this basis, it is considered that these events will not result in any significant adverse noise effects. March 2013 8-12 ES Chapter 8 Noise Copyright Partnerships for Renewables Development Co. Ltd 2013 ©

<strong>Camilty</strong> <strong>Wind</strong> <strong>Farm</strong><br />

8.4.2 The proprietary noise modelling software SoundPLAN was used to predict scheme<br />

operational noise levels at each of the identified NSR (Table 8.1) at a height of 4 m above<br />

local ground height; no topographical in<strong>for</strong>mation was incorporated into the model and a<br />

ground absorption value of G=0 was assumed. The noise immission modelling <strong>for</strong> <strong>Camilty</strong><br />

wind farm considers a candidate wind turbine, the Nordex N100 2.5MW of hub height 80 m.<br />

8.4.3 Agreement was reached with WLC on standards <strong>for</strong> assessment and methodology,<br />

particularly with respect to establishing prevailing background noise levels.<br />

8.4.4 A technical workshop was held on 26 July 2012, which incorporated all the views and<br />

assessment requirements of the appointed EIA specialists (landscape, cultural heritage,<br />

ecology, hydrology and ornithology as well as noise), the purpose of which was to refine the<br />

proposals to satisfy all requirements.<br />

8.4.5 This workshop considered not only the environmental effects associated with the proposed<br />

scheme but also the cumulative effects of other proposed wind energy development in the<br />

vicinity of <strong>Camilty</strong> wind farm, specifically Harburnhead and Fauch Hill wind farms.<br />

8.4.6 It was found that, at the Harburnhead NSR, the proposed wind farm could comply with the<br />

derived limits in isolation. However, it was clear that all three schemes were unlikely to be<br />

able to operate simultaneously and meet the limits derived from the baseline in<strong>for</strong>mation.<br />

This cumulative issue was discussed with WLC and it was agreed that the scheme and<br />

cumulative in<strong>for</strong>mation should be presented separately to allow direct comparison between<br />

the proposals <strong>for</strong> each of the 3 adjacent wind farms. This is discussed in more detail later in<br />

this Chapter.<br />

8.5 Potential Significant Effects of the Scheme Prior to Mitigation<br />

8.5.1 The proposed development comprises 6 wind turbines, a control building and substation, an<br />

anemometry mast, a temporary construction compound and amended vehicular access on to<br />

site. A description of the proposed development is presented in Chapter 4: Project<br />

Description.<br />

8.5.2 The following sections assess the likelihood of significant effects associated with noise during<br />

the construction and operational phases of the development.<br />

Construction Effects<br />

Construction Traffic<br />

8.5.3 Abnormal loads transporting turbine components (wind turbine blades, nacelles and tower<br />

components) will follow a predefined route to the site (see Chapter 7: Traffic and Transport<br />

<strong>for</strong> a description of the abnormal load route). Turbine components will be transported to the<br />

site by a specialist heavy haulage contractor.<br />

8.5.4 As identified in Chapter 7: Traffic and Transport, there would be up to 78 abnormal loads<br />

transporting turbine components to the proposed wind farm site over the course of the<br />

construction period. Although it is inevitable that these heavy vehicle pass-by events will be<br />

noticeable in comparison to the composition of existing typical traffic flows, they will be rare<br />

and necessary events which will be scheduled along specific routes. On this basis, it is<br />

considered that these events will not result in any significant adverse noise effects.<br />

March 2013 8-12 ES Chapter 8<br />

Noise<br />

Copyright <strong>Partnerships</strong> <strong>for</strong> <strong>Renewables</strong> Development Co. Ltd 2013 ©

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