Galloper Wind Farm Project - National Infrastructure Planning

2842_SLVIA
ZTVs and wireframes are used to inform the field study assessment work,
providing additional detail and accuracy to observations made on site. In line
with the SNH guidance, photomontages are produced in order to assist
readers of the assessment in visualising the proposals, should not be used
alone in reaching judgements of effect. In the wireframes and
photomontages, the turbines are facing into the prevailing wind direction
(the way they would most commonly be oriented). This results in a
representative variation in the appearance of the turbines from different
viewing angles.
The following points should be borne in mind in respect of the ZTV study:
� Areas shown as having potential visibility only may have visibility of the
development, local features such as trees, hedgerows, embankments or
buildings could obscure the view.
� Since only the WTG hubs and blade tips have been modelled, this may be
all that is visible - rather than the WTG tower. This is particularly true of
areas near the edges of potential visibility.
A detailed description of the methods by which ZTVs, wireframes and
photomontages are prepared is included within a separate appendix.
8) Assessment Terminology and Judgements
A full glossary of terms is provided as an appendix to the SLVIA. The key
terms used within assessments are Sensitivity, Magnitude and Significance.
Sensitivity to change is assessed for both seascape/landscape receptors such
as regional seascape units, designated areas and landscape character areas,
and for visual receptors (people) at agreed viewpoints. It provides an
indication of the likelihood of unacceptable effects on those receptors from a
development of the type proposed.
A description of how sensitivity is assessed for each receptor type is included
below. It is usually rated on the following scale:
� High - material effects are likely to arise from a development of this
nature.
� Medium - material effects may arise from a development of this nature.
� Low - material effects are unlikely to arise from a development of this
nature.
Sensitivity of landscape character areas is influenced by their characteristics
and is frequently considered within documented landscape character