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Newlands Cross Upgrade EIS - European Investment Bank

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South Dublin County Council N7 <strong>Newlands</strong> <strong>Cross</strong> <strong>Upgrade</strong><br />

Environmental Impact Statement<br />

Arup Consulting Engineers<br />

made from the proposed plan, section and detail drawings of the scheme and from the written<br />

description of the project.<br />

3.11.2 Assessment Methodology<br />

The system of evaluation normally used in the preparation of the visual and landscape impact<br />

assessment of an Environmental Impact Statement is utilised. The assessment methodology is<br />

therefore based on the following:<br />

• Guidelines on the information to be contained in Environmental Impact Statements<br />

prepared by the Environmental Protection Agency (EPA, 2002) 13 .<br />

• Advice Notes on Current Practice in the preparation of Environmental Impact Statements<br />

(Environmental Protection Agency (EPA), September 2003) 14 .<br />

• NRA Guidelines – ‘A Guide to Landscape Treatments for National Road Schemes in<br />

Ireland’ 15<br />

3.11.3 Definition of Visual Impacts<br />

The following terminology is taken from the EPA Advice Notes on Current Practice and is<br />

used for this visual assessment.<br />

The degree of impact is described as:<br />

Imperceptible: An impact capable of measurement but without noticeable consequences.<br />

Slight: An impact which causes changes in the character of the environment which are not<br />

significant or profound.<br />

Moderate: An impact that alters the character of the environment in a manner that is<br />

consistent with the existing and emerging trends.<br />

Significant: An impact which, by its magnitude, duration or intensity alters an important<br />

aspect of the environment.<br />

Profound: An impact which obliterates all previous characteristics.<br />

The nature of the impact may be described as:<br />

Neutral: Represents a change which does not affect the quality of the environment.<br />

Positive: Represents a change which improves the quality of the environment.<br />

Negative: Represents a change which reduces the quality of the existing environment.<br />

The period of impact is described as:<br />

Temporary Impact: Impact lasting for one year or less.<br />

Short Term Impact: Impact lasting for one to seven years<br />

Medium Term Impact: Impact lasting for seven to fifteen years.<br />

Long Term Impact: Impact lasting fifteen to sixty years<br />

Permanent Impact: Impact lasting over sixty years<br />

December 2007 Page 43

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