Rossinver Graveyard Extension Hydrogeological Risk Assessment Desk Study A112235 Envest April 2019 Prepared on behalf of WYG Environmental and Planning (Northern Ireland) Limited 1 Locksley Business Park, Montgomery Road, Belfast, BT6 9UP Tel: +44 (0)28 9070 6000 Fax: +44 (0)28 9070 6050 Email: Website: www.wyg.com WYG Environmental and Planning (Northern Ireland) Limited. Registered in Northern Ireland: Number NI050736 Registered Office: 1 Locksley Business Park, Montgomery Road, Belfast, BT6 9UP Rossinver Graveyard Extension – Hydrogeological Risk Assessment Document Control Hydrogeological Risk Assessment Desk Study Document: Project: Rossinver Graveyard Client: Envest Job Number: A112235 File Origin: G:\Projects\A112\A112235 - Rossinver\P-03 Execution\11 EP\01 Reports Revision: Issue 1 Date: 30th January 2019 Prepared by: Checked by: Approved by: Neil Dickson Conor Lydon Conor Lydon Description Issue to Client of Revision: Revision: Issue 2 Date: 1st February 2019 Prepared by: Checked by: Approved by: Neil Dickson Conor Lydon Conor Lydon Description Report updated following review by Envest of Revision: Revision: Issue 3 Date: 4th February 2019 Prepared by: Checked by: Approved by: Neil Dickson Conor Lydon Conor Lydon Description Report updated following additional review by Envest of Revision: Revision: Issue 4 Date: 5th February 2019 Prepared by: Checked by: Approved by: Neil Dickson Conor Lydon Conor Lydon Description Report updated following review by CST Group of Revision: www.wyg.com creative minds safe hands Rossinver Graveyard Extension – Hydrogeological Risk Assessment Revision: Issue 5 Date: 10th April 2019 Prepared by: Checked by: Approved by: Neil Dickson Conor Lydon Conor Lydon Description Report updated following review by Planning Consultant of Revision: www.wyg.com creative minds safe hands Rossinver Graveyard Extension – Hydrogeological Risk Assessment Contents 1.0 Introduction ............................................................................................................................. 1 1.1 Report Context ........................................................................................................................ 1 1.2 Project Brief ............................................................................................................................ 1 1.3 Report Scope .......................................................................................................................... 2 1.4 Historical Site Investigation Information .................................................................................... 3 1.5 Limitations of Assessment ........................................................................................................ 3 2.0 Site Information ....................................................................................................................... 4 2.1 Site Description ....................................................................................................................... 4 2.1.1 Northern Extension ..................................................................................................... 4 2.1.2 Southern Extension ..................................................................................................... 5 2.2 Site History ............................................................................................................................. 5 2.3 Development Proposals ............................................................................................................ 6 2.3.1 Southern Area ............................................................................................................ 6 2.3.2 Northern Area ............................................................................................................. 6 3.0 Desk Study ................................................................................................................................ 9 3.1 Data Sources ........................................................................................................................... 9 3.2 Soils and Geology Overview ................................................................................................... 10 3.2.1 Bedrock Geology ....................................................................................................... 10 3.2.2 Superficial Deposits ................................................................................................... 10 3.2.3 Shallow Soil Profile .................................................................................................... 10 4.0 Water Environment ................................................................................................................ 12 4.1 General Setting ..................................................................................................................... 12 4.2 Meteorological Information ..................................................................................................... 12 4.2.1 Northern Extension ................................................................................................... 12 4.2.2 Southern Extension ................................................................................................... 13 4.3 Hydrology - Surface Water ..................................................................................................... 13 4.4 Hydrogeology - Groundwater.................................................................................................. 14 4.4.1 General Hydrogeological Setting ................................................................................ 14 4.4.2 Aquifer Classification ................................................................................................. 14 4.4.3 Groundwater Abstraction ........................................................................................... 16 4.4.4 Known Springs in the Vicinity of the Site..................................................................... 16 5.0 Site Investigation Works ........................................................................................................ 17 5.1 Trial Pitting ........................................................................................................................... 17 5.2 Encountered Ground Conditions ............................................................................................. 17 5.2.1 Soil Conditions .......................................................................................................... 17 5.2.2 Topsoil ..................................................................................................................... 18 5.2.3 Quaternary Deposits – Sandy Clayey / Sandy Loam ..................................................... 18 5.2.4 Water Entry .............................................................................................................. 18 6.0 Tier 1 Risk Screening .............................................................................................................. 19 7.0 Conclusions............................................................................................................................. 22 7.1 Northern Extension ................................................................................................................ 22 7.2 Southern Extension ................................................................................................................ 22 7.3 Conclusions ........................................................................................................................... 23 www.wyg.com creative minds safe hands Rossinver Graveyard Extension – Hydrogeological Risk Assessment Tables Table 2.1 Northern Extension Surrounding Land Uses ............................................................................... 4 Table 2.2 Southern Extension Surrounding Land Uses .............................................................................. 5 Table 2.3 Historical Map Review .............................................................................................................. 6 Table 5.1 Encountered Ground Conditions at the Exploratory Positions in Proposed Northern Extension ..... 17 Table 5.2 Encountered Ground Conditions at the Exploratory Positions in Proposed Southern Extension ..... 18 Table 6.1 Groundwater Vulnerability Assessment for Northern Extension .................................................. 20 Table 6.2 Groundwater Vulnerability Assessment for Southern Extension .................................................. 21 Figures Figure 1 – Site Location Plan Figure 2 – Historical Ordnance Survey Maps Figure 3 – Bedrock Geology Map Figure 4 – Superficial Geology Map Figure 5 – Soil Map Figure 6 – National Flooding Hazard Map Figure 7 – Groundwater Wells and Springs Map Appendices Appendix A – Report Conditions Appendix B – Lough Melvin and Ballagh River Water Quality Water Framework Directive Classification Appendix C – Lough Melvin Water Management Unit Action Plan Appendix D – Groundwater Vulnerability Matrix Appendix E – Leitrim County Council Site Investigation Report Appendix F – Anne Carey, Archaeological Consultancy Report Appendix G – Graveyard Risk Assessment Tool www.wyg.com creative minds safe hands Rossinver Graveyard Extension – Hydrogeological Risk Assessment 1.0 Introduction 1.1 Report Context WYG Environmental and Planning (NI) Limited (hereafter referred to as ‘WYG’) were commissioned