Table 19.7 Example Definitions of the Magnitude Levels for a Generic Receptor Receptor Criteria High Geology


Disturbance or loss to protected geological attributes of a designated conservation site


Soils


Widespread contamination. Multiple sources of pollution identified and multiple linkages to receptors


Human Health


Widespread contamination. High risk of exposure. Multiple sources of pollution identified and multiple linkages to receptors


Hydrogeology


Major change from the baseline conditions. Major permanent or long- term change to groundwater quality or available resource. The quality and / or quantity of the existing resource is impacted beyond repair. Changes to quality or water levels would have a significant impact upon ecological designated sites.


Medium


Minor disturbance or loss to protected geological attributes of a designated conservation site


Low


No changes to protected geological attributes of a designated conservation site


Negligible


No significant changes or large scale loss of geology


Localised contamination.


Localised contamination. Unlikely to affect end users but may affect construction workers in close proximity


Very localised contamination. No perceptible effect (no pollutant linkages)


No contamination. No effect on receptors.


Very localised contamination. No perceptible effect (no pollutant linkages)


No contamination. No effect on receptors.


Changes to the local groundwater regime are predicted to have a slight impact on resource use but not derogate any existing abstractions. Minor impacts on local and regionally important ecological sites may result.


Changes to groundwater quality, levels or yields would only have minor, short- term impact on existing resource use or ecology.


Negligible change to groundwater baseline conditions approximating to a ‘no change’ situation.


Preliminary Environmental Information May 2014


East Anglia THREE Offshore Windfarm


Chapter 19 Soils, Geology and Ground Condition Page 19


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