Whitechurch Stream Flood Alleviation Scheme
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WHITECHURCH STREAM FLOOD ALLEVIATION SCHEME Environmental Report MDW0825 Environmental Report F01 06 Jul. 20 rpsgroup.com WHITECHURCH STREAM FAS-ER Document status Version Purpose of document Authored by Reviewed by Approved by Review date A01 For Approval HC PC MD 09/04/20 A02 For Approval HC PC MD 02/06/20 F01 For Issue HC PC MD 06/07/20 Approval for issue Mesfin Desta 6 July 2020 © Copyright RPS Group Limited. All rights reserved. The report has been prepared for the exclusive use of our client and unless otherwise agreed in writing by RPS Group Limited no other party may use, make use of or rely on the contents of this report. The report has been compiled using the resources agreed with the client and in accordance with the scope of work agreed with the client. No liability is accepted by RPS Group Limited for any use of this report, other than the purpose for which it was prepared. RPS Group Limited accepts no responsibility for any documents or information supplied to RPS Group Limited by others and no legal liability arising from the use by others of opinions or data contained in this report. It is expressly stated that no independent verification of any documents or information supplied by others has been made. RPS Group Limited has used reasonable skill, care and diligence in compiling this report and no warranty is provided as to the report’s accuracy. No part of this report may be copied or reproduced, by any means, without the written permission of RPS Group Limited. Prepared by: Prepared for: RPS South Dublin County Council Caitriona Reilly & Howard Cross David Grant Principal Scientist Ecologist Project Resident Engineer West Pier Business Campus South Dublin County Council, County Hall Dun Laoghaire, Co. Dublin A96 N6T7 Tallaght, Dublin 24 T +353 1 488 2900 T +353 1 414 9000 E [email protected] E [email protected] MDW0825 | Environmental Report | F01 | 06 Jul. 20 rpsgroup.com Page i WHITECHURCH STREAM FAS-ER Contents 1 INTRODUCTION ...................................................................................................................................... 1 2 DESCRIPTION OF THE PROPOSED DEVELOPMENT ......................................................................... 3 2.1 Study Area ...................................................................................................................................... 3 2.2 Proposed Development .................................................................................................................. 3 2.2.1 Advance Works ................................................................................................................. 5 2.2.2 Construction Phase .......................................................................................................... 5 2.3 Operational Phase ......................................................................................................................... 8 2.4 Preliminary Construction Environmental Management Plan ......................................................... 9 3 EIA LEGISLATIVE CONTEXT AND GUIDANCE .................................................................................10 3.1 Planning and Development Regulations 2001 (as amended) .....................................................10 3.2 Schedule 5 and EIA Screening ....................................................................................................10 3.2.1 Sub Threshold Development ..........................................................................................10 3.2.2 Schedule 7 and Schedule 7a ..........................................................................................11 3.3 EIA Screening ..............................................................................................................................12 3.4 Scope of the Environment Report ................................................................................................13 3.4.1 Environmental Report Structure .....................................................................................13 4 POPULATION & HUMAN HEALTH ......................................................................................................14 4.1 Introduction ...................................................................................................................................14 4.2 Receiving Environment ................................................................................................................14 4.2.1 Population .......................................................................................................................14 4.2.2 Affluence & Deprivation ..................................................................................................15 4.2.3 Human Health .................................................................................................................15 4.3 Potential for Significant Impact - Construction Phase ..................................................................15 4.4 Potential for Significant Impact – Operational Phase...................................................................15 4.5 Mitigation Measures .....................................................................................................................16 5 BIODIVERSITY ......................................................................................................................................17 5.1 Introduction ...................................................................................................................................17 5.2 Receiving Environment ................................................................................................................17 5.2.1 European Sites ...............................................................................................................17 5.2.2 Nationally Designated Sites ............................................................................................17 5.2.3 Non-Designated Sites .....................................................................................................18 5.2.4 Habitats ...........................................................................................................................18 5.2.5 Invasive Species .............................................................................................................21 5.2.6 Protected Species ...........................................................................................................21 5.3 Potential for Significant Impact – Construction Phase .................................................................25 5.4 Potential for Significant Impact – Operational Phase...................................................................25 5.5 Mitigation Measures .....................................................................................................................25 6 LAND & SOILS ......................................................................................................................................27 6.1 Introduction ...................................................................................................................................27 6.2 Receiving Environment ................................................................................................................27 6.2.1 Geology ...........................................................................................................................27 6.2.2 Soil, Subsoils and Soil Deposits .....................................................................................28 6.2.3 Landslides .......................................................................................................................30 6.2.4 Geological Heritage Sites ...............................................................................................30 6.3 Potential for Significant Impact – Construction Phase .................................................................30 6.3.1 Land ................................................................................................................................30 6.3.2 Soil ..................................................................................................................................31 6.4 Potential for Significant Impact – Operational Phase...................................................................31 6.5 Mitigation Measures .....................................................................................................................31 MDW0825 | Environmental Report | F01 | 06 Jul. 20 rpsgroup.com Page ii WHITECHURCH STREAM FAS-ER 7 WATER (HYDROLOGY & HYDROGEOLOGY) ....................................................................................32 7.1 Introduction ...................................................................................................................................32 7.2 Receiving Environment - Hydrology .............................................................................................32 7.2.1 Marine Environment ........................................................................................................32 7.2.2 Surface Water Environment ............................................................................................32 7.2.3 Surface Water Quality and Risk Characterisation ..........................................................33 7.2.4 Water Quality ..................................................................................................................33