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Galloper Wind Farm Project - National Infrastructure Planning

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2842_LVIA<br />

57<br />

September 2011<br />

GALLOPER WIND FARM SUBSTATION<br />

7.0 ZTV Study<br />

7.1.1. Figures 06 and 07 show areas from where different parts of the<br />

proposed development might potentially be visible at Years 1 and 15.<br />

The proposed substation site area is a footprint within which<br />

different elements of the substation will be located. The design and<br />

arrangement of these elements has not been determined at this stage,<br />

so the ZTV plan is based on maximum potential heights of elements<br />

within different parts of the site, in accordance with the parameters<br />

shown on Drawing GWF_583_R1 Rev 1 (included in the Landscape<br />

Mitigation Statement in Appendix 4). Buildings and equipment will<br />

not be of a uniform height throughout each area but pieces of<br />

equipment/buildings may be up to the heights shown. Much of the<br />

equipment will be lower than these heights. The tallest building will<br />

be in the <strong>Galloper</strong> compound which will be up to 14m high above<br />

ground level (23mAOD). It will be necessary to include a number of<br />

lightning rods within the development on buildings and other<br />

structures but these will have a height of up to 3m above these<br />

elements and a diameter of up to 50mm. Due to their small diameter,<br />

they will only be visible from close proximity and have, therefore, not<br />

been included in the ZTV studies.<br />

7.1.2. Figures 06 and 07 also show the potential visibility of the cable<br />

sealing compounds and gantries east of the site (in orange). The<br />

design of these has also not been determined as this stage but the ZTV<br />

has been run at their anticipated maximum potential height of 13min<br />

accordance with the levels given in paragraph 1.3.2.<br />

7.1.3. The ZTV model has allowed for the removal of existing woodland<br />

within and to the east of the site which will open up visibility to the<br />

east.<br />

7.1.4. As illustrated on Figures 06 and 07, theoretical visibility towards the<br />

proposed substation development is most prevalent within a 1km<br />

radius of the substation site within a quadrant from east to northwest,<br />

rotating in a clockwise direction. There are also reasonably extensive

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