22.6.1.4.2Converter station 125. Soil will be excavated for the foundations of the converter station. It is anticipated that all excavated material will be used in the creation of bunds around the converter station and there will be no offsite disposal. The magnitude of the impact is therefore considered to be medium. The soils identified at the indication converter station location are considered to be of low environmental value and thus of low sensitivity. Therefore the impact significance is predicted to be minor adverse.
22.6.1.5 Impact 5: Potential spread of disease 126. This section considers the potential spread of disease that could be caused by construction works. For potential impacts of construction to invasive non-native species, please see Chapter 23 Ecology.
22.6.1.5.1 Landfall and onshore cable route 127. The nearest incidence of a notified scheduled disease (for potato cyst nematode) to the landfall was more than 5km west of the landfall. There are three incidences of potato cyst nematode along the onshore cable route. These are located at Kirton Lodge and Kembroke Hall (between Kirton and Newbourne) and at Sycamore Farm (south of Little Blakenham) (Figure 22.5).
128. The sensitivity of the potato cyst nematode to the potential impacts of construction is considered to be high since this source of contamination is recognised as such at a national level (Table 22.7), however the instances of these sources of contamination are few, as one location is located approximately 300m away from the onshore cable route, while two other locations cross the route. Embedded mitigation includes adhering to good practice construction and agricultural practices, thus minimising the transfer of any plant and animal diseases. These are outlined in Table 22.3. Additional mitigation is suggested in Table 22.13 below.
129. A pre-construction survey would be undertaken to obtain up-to-date information on the status of non-native invasive species within the landfall and onshore cable route; this can be combined with other pre-construction ecological surveys (see Chapter 23 Ecology).
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 22 Land Use Page 41
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