Camilty Wind Farm - Partnerships for Renewables
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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 13.2.6 Effects are identified by comparing the baseline hydrological, hydrogeological and ground conditions and how these would change over time without the project occurring (the “donothing”) scenario and how the baseline would likely change as a result of the development. Effects can be either positive (improving the baseline scenario) or adverse (detrimental to the baseline scenario). 13.2.7 Having identified and characterised the potential effects that may arise during the construction, operation and decommissioning of the wind farm, the significance of effect can be assessed by taking into consideration the magnitude of effect predicted in relation to the sensitivity of the baseline. 13.2.8 To determine the likely magnitude of effects, it is necessary to consider the timing, scale, size and duration of the potential activities. For the purposes of this assessment the magnitude criteria are defined as follows in Table 13.2. Table 13.2 Criteria for Defining Magnitude of Effect Magnitude Criteria Description and Example Large Medium Small Negligible Results in loss of attribute Affects integrity of attribute or partial loss of attribute Results in minor effect on attribute Results in an effect on attribute but of insufficient magnitude to affect the use/integrity • Fundamental (long term or permanent) changes to geology, hydrology, water quality and hydrogeology; • Loss of designated Salmonid Fishery; • Loss of national level designated species/habitats; • Changes in WFD water quality status of river reach; • Loss of flood storage/increased flood risk; and • Pollution of potable source of abstraction compared to predevelopment conditions • Material but non-fundamental and short to medium term changes to the geology, hydrology, water quality and hydrogeology; • Loss in productivity of a fishery; • Contribution of a significant proportion of the discharges in the receiving water, but insignificant enough to change its water quality status; and • No increase in flood risk. • Detectable but non-material and transitory changes to the geology, hydrology, water quality and hydrogeology; and • No increase in flood risk. • No perceptible changes to the geology, hydrology, water quality and hydrogeology; • Discharges to watercourse but no reduction in quality, fishery productivity or biodiversity; and • No increase in flood risk. 13.2.9 Once the magnitude of any potential effects are assessed, the results can be compared with the sensitivity of the baseline environment and used to define the Level of the effect as outlined in Table 13.3. March 2013 13-5 Copyright Partnerships for Renewables Development Co. Ltd 2013 © Hydrology, Hydrogeology and Ground Conditions

Camilty Wind Farm Table 13.3 Establishing the Level/ Scale of Effects Magnitude Sensitivity High Medium Low Negligible Large Very substantial or substantial Substantial or moderate Moderate or slight Negligible Medium Substantial or moderate Moderate Slight Negligible Small Moderate or slight Slight Slight or negligible Negligible Negligible Negligible Negligible Negligible Negligible 13.2.10 Potential effects are therefore assessed of being either of negligible, slight, moderate, substantial or very substantial scale. Where the scale/ level of the effects is determined to be moderate or greater, it is considered that these represent significant effects that require mitigation. 13.2.11 The results of the effect assessment are then used to identify what mitigation measures and monitoring schemes are required to ensure that effects are minimised and that action is taken or changes are made to the mitigation in place, if and when required. 13.2.12 The aim of the mitigation measures is to avoid, reduce and, if possible, remedy the significant adverse effects identified. The mitigation measures identified here will be carried through to the Health, Safety and Environmental Management System (HSEMS), an outline structure of which is included at Appendix 4.4. 13.3 Baseline Information Data Sources 13.3.1 Published information sources consulted for the baseline survey are identified in Table 13.4 below. Table 13.4 Baseline Information Sources Baseline Survey Data Source Designations • SNHi information service, Site Link (http://gateway.snh.gov.uk/sitelink/index.jsp) • SEPA, River Basin Management Plans, Web Mapping Application, http://gis.sepa.org.uk/rbmp/MapViewer.aspx Climate • BGS, Hydrogeological Map of Scotland, 1:625,000, 1988 • Flood Estimation Handbook (FEH) CD-ROM Topography Surface Hydrology and Flooding • Ordnance Survey topographic maps, scales 1:10,000; 1:25,000; and 1:50,000 • NextMap digital terrain model (DTM) • Ordnance Survey maps as above • Indicative River & Coastal Flood Map (SEPA) www.sepa.org.uk March 2013 13-6 Copyright Partnerships for Renewables Development Co. Ltd 2013 © Hydrology, Hydrogeology and Ground Conditions

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

Table 13.3 Establishing the Level/ Scale of Effects<br />

Magnitude<br />

Sensitivity<br />

High Medium Low Negligible<br />

Large<br />

Very substantial or<br />

substantial<br />

Substantial or<br />

moderate<br />

Moderate or slight<br />

Negligible<br />

Medium<br />

Substantial or<br />

moderate<br />

Moderate Slight Negligible<br />

Small Moderate or slight Slight Slight or negligible Negligible<br />

Negligible Negligible Negligible Negligible Negligible<br />

13.2.10 Potential effects are there<strong>for</strong>e assessed of being either of negligible, slight, moderate,<br />

substantial or very substantial scale. Where the scale/ level of the effects is determined to be<br />

moderate or greater, it is considered that these represent significant effects that require<br />

mitigation.<br />

13.2.11 The results of the effect assessment are then used to identify what mitigation measures and<br />

monitoring schemes are required to ensure that effects are minimised and that action is taken<br />

or changes are made to the mitigation in place, if and when required.<br />

13.2.12 The aim of the mitigation measures is to avoid, reduce and, if possible, remedy the significant<br />

adverse effects identified. The mitigation measures identified here will be carried through to<br />

the Health, Safety and Environmental Management System (HSEMS), an outline structure of<br />

which is included at Appendix 4.4.<br />

13.3 Baseline In<strong>for</strong>mation<br />

Data Sources<br />

13.3.1 Published in<strong>for</strong>mation sources consulted <strong>for</strong> the baseline survey are identified in Table 13.4<br />

below.<br />

Table 13.4 Baseline In<strong>for</strong>mation Sources<br />

Baseline Survey<br />

Data Source<br />

Designations • SNHi in<strong>for</strong>mation service, Site Link<br />

(http://gateway.snh.gov.uk/sitelink/index.jsp)<br />

• SEPA, River Basin Management Plans, Web Mapping Application,<br />

http://gis.sepa.org.uk/rbmp/MapViewer.aspx<br />

Climate • BGS, Hydrogeological Map of Scotland, 1:625,000, 1988<br />

• Flood Estimation Handbook (FEH) CD-ROM<br />

Topography<br />

Surface Hydrology<br />

and Flooding<br />

• Ordnance Survey topographic maps, scales 1:10,000; 1:25,000; and<br />

1:50,000<br />

• NextMap digital terrain model (DTM)<br />

• Ordnance Survey maps as above<br />

• Indicative River & Coastal Flood Map (SEPA) www.sepa.org.uk<br />

March 2013<br />

13-6<br />

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

Hydrology, Hydrogeology and Ground Conditions

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