Annex G - Hydrology and Hydrogeology Assessment
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NEWINGTON QUARRY Sand & Gravel Extraction Environmental Statement ANNEX G - HYDROLOGY AND HYDROGEOLOGY ASSESSMENT 47072089.ES AECOM March 2015 Hydrological and Hydrogeological Impact Assessment for a proposed extension to Newington Quarry, Nottinghamshire Report ref: 1038/HIA Final v2 February 2015 Report prepared for : Hanson UK Howley Park Quarry Lane DEWSBURY West Yorkshire WF12 7JJ BARKERS CHAMBERS • BARKER STREET • SHREWSBURY • UNITED KINGDOM • S Y 1 1 S B T E L : 01743 355770 FAX: 01743 357771 E M A I L : [email protected] Hydrological and Hydrogeological Impact Assessment for a proposed extension to Newington Quarry, Nottinghamshire Report ref: 1038/HIA Final v2 February 2015 Prepared by: Checked by: L R Brown BSc MSc CGeol C C Leake BSc MSc FGS Hanson UK Newington Quarry, Nottinghamshire: Hydrological and hydrogeological impact assessment Final CONTENTS 1 INTRODUCTION 1 1.1 Background 1 1.2 Location 1 1.3 Scope of assessment 1 1.4 Data sources 1 1.5 Methodology of investigation 2 2 BASELINE DATA 3 2.1 Topography 3 2.2 Hydrology 3 2.2.1 Rainfall 3 2.2.2 Surface water features 3 2.2.3 Drainage 4 2.2.4 Flood management 5 2.2.5 Surface water abstractions 5 2.3 Sites of ecological interest 6 2.3.1 Sites of Special Scientific Interest (SSSI) 6 2.3.2 Special Area of Conservation (SAC) 7 2.3.3 Non-statutory conservation sites 7 2.4 Geology 8 2.4.1 Regional 8 2.4.2 Local 8 2.5 Hydrogeology 9 2.5.1 Aquifer units 9 2.5.2 Groundwater levels 9 2.5.3 Aquifer properties 11 2.5.4 Groundwater abstractions 12 2.5.5 Source protection zones 12 2.6 The existing development 13 2.6.1 Site layout 13 2.6.2 Current operations 13 2.6.3 Existing water management 13 2.7 Conceptual hydrogeology 13 3 THE PROPOSED DEVELOPMENT AND RESTORATION 15 3.1 General 15 3.2 Water management during mineral extraction 15 3.2.1 Newington South AWA 15 3.2.2 Newington West 17 3.3 Proposed restoration 17 4 ASSESSMENT OF IMPACTS 19 4.1 Methodology 19 4.2 Baseline sensitivity 19 4.3 Potential operational impacts 19 4.3.1 Groundwater flow regime 19 4.3.2 Groundwater quality 20 4.3.3 Groundwater levels 20 4.3.4 Sites of ecological interest 21 4.3.5 Surface water flow 21 4.3.6 Surface water quality 22 Page i February 2015 P:\Projects\Newington\Newington 14\Reports\HIA Report\Final\1038_HIA Final 3.0.doc Hanson UK Newington Quarry, Nottinghamshire: Hydrological and hydrogeological impact assessment Final 4.3.7 Groundwater abstractions 22 4.3.8 Surface water abstractions 23 4.3.9 Flooding 23 4.4 Restored site 23 4.4.1 Groundwater flow 23 4.4.2 Groundwater quality 23 4.4.3 Sites of ecological interest 23 4.4.4 Surface water flow and quality 24 4.4.5 Flooding 24 5 WATER FRAMEWORK DIRECTIVE ASSESSMENT 24 5.1 Introduction 24 5.2 River Basin Management Plan and waterbody status 24 5.3 Assessment 25 6 MITIGATION MEASURES 26 6.1 Introduction 26 6.2 Newington North 26 7 CONCLUSIONS 27 TABLES Table 1038/HIA/T1: Long-term average monthly rainfall at Wiseton (mm) 3 Table 1038/HIA/T2: Long-term rainfall data from MAFF Technical Bulletin B4 (mm) 3 Table 1038/HIA/T3: Long-term rainfall data from MAFF Technical Bulletin B4 4 Table 1038/HIA/T4: Licensed surface water abstractions 6 Table 1038/HIA/T5: Local wildlife sites 7 Table 1038/HIA/T6: Regional geological succession 8 Table 1038/HIA/T7: Local stratigraphy 9 Table 1038/HIA/T8: Aquifer properties of the Sherwood Sandstone 11 Table 1038/HIA/T9: Licensed groundwater abstractions with 2 km of the site boundary 12 DRAWINGS Drawing 1038/HIA/01 Location of Application Areas Drawing 1038/HIA/02 Surface water features Drawing 1038/HIA/03 River stage and flow data on the River Idle Drawing 1038/HIA/04 Surface water abstractions Drawing 1038/HIA/05 Sites of ecological interest Drawing 1038/HIA/06 Regional geology Drawing 1038/HIA/07 Groundwater abstractions and Environment Agency observation boreholes Drawing 1038/HIA/08 Groundwater hydrographs for the Sherwood Sandstone Drawing 1038/HIA/09 Sherwood Sandstone: Regional groundwater levels Drawing 1038/HIA/10 Location of site groundwater monitoring boreholes Drawing 1038/HIA/11 Comparison between river stage level and groundwater level in Unit 2 of the Idle Washlands SSSI Drawing 1038/HIA/12 Groundwater hydrographs for Newington Quarry north of Slaynes Drain Drawing 1038/HIA/13 Groundwater hydrographs for Newington Quarry south of Slaynes Drain Drawing 1038/HIA/14 Comparison between river stage level and adjacent groundwater levels Drawing 1038/HIA/15 Inferred groundwater levels during previous phases of working Page ii February 2015 P:\Projects\Newington\Newington 14\Reports\HIA Report\Final\1038_HIA Final 3.0.doc Hanson UK Newington Quarry, Nottinghamshire: Hydrological and hydrogeological impact assessment Final Drawing 1038/HIA/16 Current site layout Drawing 1038/HIA/17 Conceptual model Drawing 1038/HIA/18 Proposed development APPENDICES Appendix 1038/HIA/A1 Assessment methodology Appendix 1038/HIA/A2 SSSI citations Appendix 1038/HIA/A3 Dewatering calculations Appendix 1038/HIA/A4 Water Framework Directive Waterbody status Page iii February 2015 P:\Projects\Newington\Newington 14\Reports\HIA Report\Final\1038_HIA Final 3.0.doc Hanson UK Newington Quarry, Nottinghamshire: Hydrological and hydrogeological impact assessment Final 1 INTRODUCTION 1.1 Background Hanson Quarry Products Europe Ltd (Hanson) owns and operates Newington Quarry in Nottinghamshire, located approximately 14 km southeast of Doncaster and adjacent to the River Idle. The quarry produces sand and gravel for construction aggregate. Hanson is seeking Planning Permission to enlarge the permitted mineral extraction area to the south of the current workings at ‘Newington South’ and for a new extension to the west of the recently restored area of ‘Newington North’. Mineral processing will not be undertaken on the site and the ‘as dug’ mineral will be transported by road to an existing processing plant at Auckley, which is located 10.5 kilometres (km) from the Application Area. A full description of the development is provided in section 4 of the main Environmental Statement. Two planning applications are being made. The first covers the existing Newington South Quarry and proposes expanding the existing permitted workings to the south, into an area known as Newington South Additional Working Area (AWA). The second, Newington West, is an extension of the area previously worked as Newington North and now partially restored. The Application Areas are shown on Drawing 1038/HIA/01 . The Newington West extension will be restored to a variety of floodplain wetland habitats, while the Newington South AWA will be incorporated into the existing approved restoration plan for the existing permitted working area. Hafren Water has been commissioned to undertake a hydrogeological and hydrological assessment in support of the Planning Applications. 1.2 Location The Application Areas (the ‘site’) are located approximately 1.25 km to the southwest of Misson Village and 3.5 km to the east-northeast of the town of Bawtry in Nottinghamshire, centred on National Grid Reference (NGR) SK 681 942. The site lies between Bawtry Road, which runs between the villages of Misson and Newington, and the River Idle. The site is bisected by Slaynes Drain, alongside which is Slaynes Lane, a Byway Open to All Traffic. 1.3 Scope of assessment The scope of the assessment is based upon knowledge from prolonged involvement of Hafren Water with the quarry over several phases of development, a site visit and a desk study. The objectives of the assessment are summarised as follows: Define baseline conditions for the workings in the proposed Newington West extension and the proposed workings in the AWA in Newington South, relating to all aspects of water and its management. Identify and evaluate current and potential impacts of the proposed development upon the water environment. Propose appropriate mitigation measures, if required. Identify residual effects that may remain after the cessation of mineral extraction and the potential for restoration. 1.4 Data sources The following data sources were used in the preparation of this report: Hanson Quarry Products Europe Ltd February 2015 P:\Projects\Newington\Newington 14\Reports\HIA Report\Final\1038_HIA Final 3.0.doc Hanson UK Newington Quarry, Nottinghamshire: Hydrological and hydrogeological impact assessment Final Geological borehole logs and groundwater level data An investigation of the hydrology and hydrogeology in the vicinity of Newington, Nottinghamshire and an assessment of the potential impacts of the proposed mineral extraction upon the local water environment, C Leake, June 2000 Hydrological and hydrogeological investigation of the area around a proposed extension to Newington Quarry, Nottinghamshire. Hafren Water, September 2005 British Geological Survey (BGS) 1:50,000 scale geological maps, Sheet 88, Doncaster and Sheet 101, East Retford Archived borehole logs from the locality Environment Agency Licensed abstractions Rainfall River stage data for the River Idle Groundwater protection zones Groundwater level monitoring data Idle and Torne Catchment Abstraction Management Strategy, February 2013 Isle of Axholme Flood Risk Management Strategy, 2011 River Idle Washlands SSSI. Water Level Management Plan. December 2006 Environmental Health Department, Bassetlaw District Council Unlicensed groundwater abstraction data Isle of Axholme and North Nottinghamshire Water Level Management Board Details of drainage within the Application Area Natural England SSSI notifications Magic website (Magic.defra.gov.uk) Other Understanding Waterlogged Burial Environments: The Impacts of Aggregates Extraction and De-watering on the Buries Archaeological Resource. Lillie, M and Smith R, February 2008. Hydrogeological assessment of proposed sand and gravel extraction and subsequent restoration adjacent to the River Idle, near Misson, Nottinghamshire.