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. RMC, June 1994.

1.5 Methodology of investigation

Baseline conditions of the water environment have been defined by the collation and analysis of existing data and field observations. The potential effects of the proposed development upon the extant water environment have been assessed by reference to the baseline data and a series of matrices ( Appendix 1038/HIA/A1 ), developed to ensure a rigorous and consistent approach to the assessment of potential impacts. Mitigation measures have been proposed where appropriate.

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

2 BASELINE DATA

2.1 Topography

The site is located within the floodplain of the River Idle and the topography is generally flat with an elevation of around 2 metres above Ordnance Datum (mAOD). A track, known as Slaynes Lane, orientated from southwest to northeast, is located between Newington South and Newington West. Former quarry workings (Newington North) lie to the north of Slaynes Lane, in which restoration to lakes and wetland is currently being completed.

Ground elevations increase gradually to the northwest of the site such that at a distance of approximately 1 km they average 5 mAOD. A break of slope occurs approximately 2 km to the west where elevations increase more rapidly, reaching about 30 mAOD at a distance of 3.5 km from the site. A similar break of slope occurs 1.5 km to the south, where elevations increase to approximately 40 mAOD. Elevations decrease very gradually over distances of several kilometres to the east.

2.2 Hydrology

2.2.1 Rainfall Rainfall data were obtained from the Environment Agency for the closest gauging station to the site, at Wiseton (NGR SK 711 893), which is located approximately 5 km to the southeast.

The annual average rainfall at Wiseton between 1961 and 1990 was 592 mm. Long-term Average (LTA) total monthly rainfall values are shown in Table 1038/HIA/T1.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Rainfall 47 36 46 50 51 54 55 56 48 44 51 54 Table 1038/HIA/T1: Long-term average monthly rainfall at Wiseton (mm)

Additional regional data are available from MAFF Technical Bulletin B4, Climate and Drainage, which provides LTA monthly rainfall, potential evaporation and effective rainfall, reproduced in Table 1038/HIA/T2. These data give an annual average rainfall of 622 mm.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Rainfall 54 42 43 42 52 49 56 65 52 51 62 54 Potential 1 10 32 57 84 93 93 71 44 20 4 1 evaporation Effective 45 26 13 0 0 0 0 0 5 24 47 51 rainfall Table 1038/HIA/T2: Long-term rainfall data from MAFF Technical Bulletin B4 (mm)

2.2.2 Surface water features Watercourses The River Idle is the largest watercourse in the vicinity of the site (Drawing 1038/HIA/02 ). However, the majority of the floodplain of the River Idle, and the river itself, has been subject to extensive improvements and land drainage works which have largely obscured the pre-existing, natural, drainage pattern. As a result, the channel and flow characteristics of the river have been greatly modified, which has resulted in the hydromorphological status of the river under the Water Framework Directive being classed as ‘Artificial’.

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

In the vicinity of the site the river flows in a generally east-northeasterly direction, turning due eastwards approximately 4 km to the northeast. It discharges into the tidal River Trent at West Stockwith, approximately 11.5 km to the east of the quarry. The total catchment area at this point comprises 832 km 2 of predominantly rural land, which is generally flat and low-lying. Numerous man-made drainage channels characterise the area in the vicinity of the site. The confluence of the River Ryton with the River Idle (catchment 249 km 2) occurs 2 km upstream of the site.

The estimated gradient of the river is 1:37,000 (ie 10 cm over 3.7 km) between Bawtry and West Stockwith. This is extremely shallow and reflects the nature of the landform and the water level control measures in operation at West Stockwith.

There are a number of river level gauges on the River Idle within 2 km of the site (Drawing 1038/HIA/02 ), the closest of which (Newington gauge) is immediately adjacent to Newington South at NGR SK 6827 9377. Stage data (as maximum daily level) for this gauge for the period May 1997 to November 2014 were obtained from the EA and are shown on Drawing 1038/HIA/03 .

The nearest flow gauging station on the River Idle is at Mattersey (SK 6901 8952), approximately 10 km upstream of the site and upstream of the confluence with the River Ryton. The nearest flow gauging station on the River Ryton is at Serlby Park (SK 641 897), approximately 8 km upstream of the site. Summary statistics for both gauges taken from the National River Flow Archive (http://www.ceh.ac.uk/data/nrfa/data/search.html) are shown in Table 1038/HIA/T3. The hydrograph for the Mattersey gauge is shown on Drawing 1038/HIA/03 .

Serlby Park (River Statistic Mattersey (River Idle) Ryton) Catchment Area km 2 529 231 Station elevation mAOD 3.8 5.6 Period of Record: 1982 - 2013 1965 - 1978 Percent Complete: % 99 100 Base Flow Index: 0.78 0.7 Mean Flow: m3/s 2.363 1.752 3 95% Exceedance (Q 95 ): m /s 0.833 0.445 3 70% Exceedance (Q 70 ): m /s 1.507 0.98 3 50% Exceedance (Q 50 ): m /s 1.957 1.267 3 10% Exceedance (Q 10 ): m /s 4.071 3.231 Table 1038/HIA/T3: Long-term rainfall data from MAFF Technical Bulletin B4

2.2.3 Drainage Land drainage in the low-lying area along the River Idle is managed by the Isle of Axholme and North Nottinghamshire Water Level Management Board (WLMB). The area covered by the WLMB in the vicinity of the site is indicated on Drawing 1038/HIA/02 . The only drain maintained by the WLMB in the immediate vicinity of the site is Slaynes Drain, which passes between Newington West/North and Newington South.

Slaynes Drain was constructed as part of the Misson West flood storage facility. Inflow to the drain occurs via an 80 m long plate weir, the top of which is at an elevation of 3.72 mAOD,

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 slightly lower than that of the adjacent flood protection bund (Note that in 2008, the Environment Agency reported this elevation as 3.85 mAOD). The Drain runs for approximately 1.6 km in a northeasterly direction before it turns to the southeast and discharges into the River Idle via gravity operated sluice gates located at NGR SK 6884 9453. Comparing the weir level to the gauge levels at the Newington gauge (1.3 km downstream) suggests that the river would have overflowed across the weir in November 2000, June 2007 and December 2012 (Drawing 1038/HIA/03 ). In June/July 2007, Environment Agency records show that the storage area was filled to a level of 3.7 mAOD (Environment Agency letter communication, 22 May, 2008).

The storage facility is designed such that it becomes operational during a storm event when the flow in the River Idle exceeds the capacity of the West Stockwith Pumping Station to pump water into the River Trent.

2.2.4 Flood management Flooding historically occurred due to the relative elevation of the River Idle to that of the River Trent, into which it discharges at West Stockwith. At times of high water within the River Trent discharge from the River Idle was precluded, resulting in flooding due to ‘backing up’. Flood alleviation measures have been put in-place comprising flood bunds along both sides of the River Idle downstream from Bawtry and a pumping station at West Stockwith. The pumping station was installed to allow discharge to the River Trent when relative elevations were such that gravity discharge was precluded.

According to the Environment Agency, the level of the River Idle upstream of the West Stockwith Pumping station is maintained at between 1.7 and 2.3 mAOD. During the winter, the upper limit is reduced to 2.1 mAOD, achieved by either opening the sluice gate, or by pumping if sluicing is not possible. With the sluice closed, pumping will commence at either 2.1 mAOD or 2.3 mAOD. When flood conditions are expected, the river level can temporarily be reduced to 1.2 mAOD in order to increase channel capacity.

The Environment Agency’s Flood Risk Management Strategy for the Isle of Axholme, published in 2013, contained options for cessation of pumping at West Stockwith and relying instead solely on gravity outfall to the River Trent. Refurbishment of the Trent/Idle Tidal Gate was completed in November 2014 and no further capital investment in the pumping station is anticipated before 2021. Any further capital investments after that date will be preceded by a review in-line with the recommendations in the Isle of Axholme Strategy.

2.2.5 Surface water abstractions Details of licensed surface water abstractions within 2 km of the boundary of the site were obtained from the Environment Agency and are presented in Table 1038/HIA/T4. A total of 10 abstractions were identified within the search radius, primarily from the River Idle and mostly for spray irrigation.

Their locations are shown on Drawing 1038/HIA/04. Note that the location of licences where abstraction takes place over a reach are identified using the centre of the designated reach.

ID Licence N o Name NGR (SK) Annual Source Type volume (m 3) 6756 9335 1 03/28/78/0006 G T Wagstaff 6,818 River Idle (P) SI 6640 9355 2 03/28/78/0009 Loveden Estates 694 948 45,460 River Idle (P) SI 677 935 3 03/28/78/0020 B E Bellamy 31,822 River Idle (R) SI 685 936 4 03/28/78/0021 G Shearing Troop 6865 9360 54,554 River Idle (P) SI

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

ID Licence N o Name NGR (SK) Annual Source Type volume (m 3) 6885 9420 5 03/28/78/0028 Arden Farms 60,000 River Idle (R) SI 6739 9360 6 03/28/78/0035 Loveden Estates 6980 9475 15,000 River Idle (P) SI Tunnel Tech 7 03/28/78/0038 6729 9374 73,000 River Idle (P) P (North) Ltd 6870 9380 8 03/28/78/0039 Loveden Estates 272,760 River Idle (R) SI 7250 9660 Drains & ditches, 690 945 9 03/28/78/0040 Loveden Estates 363,680 Everton & Gringley SI 690 915 Carr (A) Tunnel Tech River Idle (P) 10 MD/28/0078/003 98,400 P (North) Ltd 67274 937 Key: SI – Spray irrigation (P) – Point (A) Area P – Process water (R) – Reach Table 1038/HIA/T4: Licensed surface water abstractions

2.3 Sites of ecological interest

2.3.1 Sites of Special Scientific Interest (SSSI) There are two SSSIs within 2 km of the site boundary, Idle Washlands and Barrow Hills Sandpit, as shown on Drawing 1038/HIA/05. The full SSSI citations are included in Appendix 1038/HIA/A2.

Idle Washlands The Idle Washlands SSSI comprises four individual units located along the River Idle, approximately 1 km apart from each other.

Unit 1 (Bawtry), with an area of approximately 51 ha is located on the north side of the River Idle between Bawtry and the village of Newington. Its eastern boundary is 250 m from the proposed Newington West extension, at its closest approach. The unit condition is classed as ‘unfavourable recovering’. According to the Natural England website, ‘To remedy the unfavourable condition of the site, the unit is being brought into an agri-environment scheme to ensure the habitat is appropriate for the needs of the species of interest’.

Unit 2 (Misson West) is located immediately to the south of Newington South and covers an area of approximately 10 ha. The unit condition is classed as ‘unfavourable recovering’. In 2002 one of the reasons for the adverse condition was reported as ‘inappropriate water levels’.

Unit 3 (Misson East) lies 1.5 km directly east (or 2 km downstream) of the site and has an area of 4.6 ha. The unit is reported to be in ‘favourable’ condition.

Unit 4 (Idle Stop) is 3.3 km northeast of the site and considered to be outside any area of influence of the proposed working in the Application Areas.

The main objective of the 2006 Water Level Management Plan (Environment Agency, 2006) was to bring the site into favourable, or unfavourable recovering by 2010. As noted above, all the units are currently meeting this objective.

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

Barrow Hills Sandpit This SSSI lies 1.9 km south of the site at Harwell. The SSSI is located on Glacial sand and gravel deposits at an elevation of around 30 to 40 mAOD, well above the floodplain of the River Idle. According to the SSSI citation, this is not a water-dependent site and is not considered further in the assessment.

2.3.2 Special Area of Conservation (SAC) There are no SAC sites within 2 km of the site.

2.3.3 Non-statutory conservation sites There are 18 Local Wildlife Sites within 2 km of the boundary of the site, as shown on Drawing 1038/HIA/05. Details of the sites are summarised in Table 1038/HIA/T5. Three of the sites, LWS2, LWS7 and LWS11 are within the Idle Washlands SSSI.

Map Site Name NGR Habitat Type ID (SK) 1 5/108 Top Road Sandpit 700 954 Wet depressions; Vegetated Spoil; Scrub; Open sandy habitats 2 2/576 1 North Carr Drain 706 945 Washland habitats (5.8 ha) Washland 3 1/65 Delve Drain (and 694 942 Drains (0.675 ha) associated channel) 4 2/420 Barrier Bank, Newington 666 935 Woodland; Ruderal riverside vegetation (7.26 ha) 5 2/568 Everton Carr Drains 687 936 Species-rich drainage channels (0.402 ha) 6 2/569 Barrier Bank, Misson 690 944 Woodland; Ruderal riverside vegetation (14.435 ha) 7 2/574 1 Newington Washland 656 933 Washland habitats (50.986 ha) 8 2/969 Rugged Butts 678 956 Acid grassland; Woodland (38.039 ha) 9 5/2162 Misson Pumphouse 709 949 Seasonal flash; Farmland Flash 10 5/2164 Slaynes Lane 681 939 Carr; Farmland; Gravel pits prone to winter/spring flooding 11 2/573 1 Slaynes Lane Washland 684 938 Washland habitats (11.921 ha) 12 5/2241 River Idle Everton Carr 682 936 Section of River Idle of interest for water beetle (2.041 ha) 13 1/67 Barrow Hills Sandpit 14 2/578 Barrow Hills Plantation 677 920 Mixed plantation and secondary woodland (48.889 ha) 15 5/106 Everton Carr Woodland Semi-natural deciduous woodland on damp peaty/sand substrate (6.388 ha) 16 5/2223 Toft Hill Lane Drain and Ditches and drain of interest for water beetle (0.154 Pond ha) 17 5/2288 Portland Drain Drain (0.699 ha) 18 Austerfield Sand Pits 1. Form part of the Idle Washlands SSSI

Table 1038/HIA/T5: Local wildlife sites

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

2.4 Geology

2.4.1 Regional The solid geology comprises a sequence of sedimentary strata which dip uniformly and at a low angle to the east. Sandstone of the Triassic Sherwood Sandstone Group is present beneath the site and is in turn underlain by a Permian sedimentary sequence. The regional solid geology, taken from the published British Geological Survey (BGS) sheets 88 and 101, is shown on Drawing 1038/HIA/06 and a summary stratigraphic column is given in Table 1038/HIA/T6.

Age Group Formation Lithology Quaternary Peat Organic material Alluvium Silt or fine sand River Terrace Gravel Glacial sands and Sand and gravel gravels Glacial Till Clayey, sandy, or gravely clay Mercia Mudstone Sneinton Formation Siltstone and fine sandstone Group Permo- Sherwood Nottingham Castle Triassic Sandstone Sandstone Group Sandstone Formation Lenton Formation Sandstone Roxby Formation Calcareous mudstone Brotherton Formation Dolomitic limestone Permian Zechstein Group Edlington Formation Calcareous mudstone Cadeby Formation Dolomitic limestone Table 1038/HIA/T6: Regional geological succession

Data from geological logs held by the BGS indicates that the Sherwood Sandstone is approximately 280 m thick below the site. The sandstone is generally pink or brown, commonly cross-bedded, fine to coarse-grained and locally micaceous. Thin mudstone bands are encountered within the sequence. The sandstone is frequently friable and near the surface, within the weathered zone, may be unconsolidated. The closest Permian formations outcrop 9.5 km to the west of the site and comprise mudstones of the Roxby Formation overlying the Brotherton Formation. Mercia Mudstone outcrops approximately 2 km to the east of the site, the boundary of the outcrop running north - south.

The solid geology is largely concealed beneath superficial deposits of Quaternary and Recent age. Outcrops of Sherwood Sandstone occur at Bawtry, Scrooby and between Scaftworth and Everton. Over the higher ground to the west the superficial deposits comprise Glacial sand and gravel, Glacial clay and head deposits. Across the low-lying floodplain of the River Idle the superficial deposits comprise alluvium, River Terrace deposits and peat. The River Terrace deposits constitute the economic mineral within Newington Quarry.

2.4.2 Local Details of the local geology have been derived principally from the results of mineral evaluation drilling and trial pitting. The near-surface deposits comprise a variable sequence of soils, clay, peat and sand and gravel. The Sherwood Sandstone was encountered at the base of the majority of the mineral evaluation boreholes, where it comprised orange-brown, fine to medium sand, clayey silt or silty sand. The often unconsolidated nature of the weathered sandstone makes identification of an exact drift/sandstone boundary difficult. A generalised stratigraphy is shown in Table 1038/HIA/T7.

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

Lithology Thickness (m) Topsoil 0.2 – 0.6* Peat 1 – 5* Silt, clay or silty sand 1 – 2.5* Sand and gravely sand 2 – 5 Silty sand, silt or clay >0.2* * Horizon absent in some areas Table 1038/HIA/T7: Local stratigraphy

Peat occurred at the surface over much of the site prior to mineral working. It is described in borehole logs as dark brown to black and fibrous and varied in thickness between approximately 0.5 m and 5 m and is thickest adjacent to the River Idle. The economic mineral comprises sand and gravel of the First Terrace and varies in thickness between approximately 2 m and 5 m. Its lithology is variously silty sand to gravelly sand with the gravel content ranging from 0% to 60%, and in general between 30% and 40%. The deposit is described in geological borehole logs as orange-brown, silty, locally clayey, fine to coarse sand and sub-rounded fine to coarse gravel. The thickness of overburden ranges from 2.1 to 2.9 m across the Newington South AWA and from 1.7 to 3.5 m in the Newington West extension. `

2.5 Hydrogeology

2.5.1 Aquifer units Two main aquifer units can be defined, the Sherwood Sandstone bedrock and the superficial deposits, although the complex nature of the superficial deposits and their lateral variations may mean thinner individual units may also occur.

The Sherwood Sandstone is defined as a Principal Aquifer by the Environment Agency and is of regional importance, particularly as a source for public water supply (PWS). The aquifer is unconfined in the vicinity of the site, becoming confined approximately 2 km to the east, where it is overlain by Mercia Mudstone. Groundwater flow through the sandstone occurs via both intergranular and fracture flow. Interbedded horizons of mudstone are thought to limit the vertical hydraulic conductivity within the Sherwood Sandstone.

The superficial deposits in the region are defined as Secondary Aquifers by the Environment Agency, and are laterally extensive in some areas. Sand and gravel of the River Terrace formations are the most important unit. In many places the sand and gravel aquifer lies directly upon the Sherwood Sandstone and is in hydraulic continuity with the top of the sandstone. Studies by Hull University (Lillie and Smith, 2008) suggest that the peat deposits form a separate unit with water levels higher than the underlying sand and gravel deposits.

2.5.2 Groundwater levels Sherwood Sandstone Groundwater levels in the Sherwood Sandstone are monitored by the Environment Agency. The location of nearby observation boreholes are shown on Drawing 1038/HIA/07 and data for these boreholes was obtained from the Environment Agency.

Groundwater level hydrographs at the two closest observation boreholes to the Application Areas are provided on Drawing 1038/HIA/08. The borehole at Misson (NGR SK6854 9512) lies approximately 0.6 km to the north of Newington South and the borehole at GR Stein Refectories (NGR SK 6587 9448) is 1.5 km to the west of Newington West. The GR Stein borehole is also

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 an operational abstraction (Licence N o 03/28/82/010), as is apparent from the rapid changes in groundwater level shown on the hydrograph.

If the short-term abstraction-linked water level variations in the GR Stein borehole are ignored, then a similar pattern of medium-term groundwater level variation can be seen in the two boreholes. The range of medium-term groundwater level variation is smaller in the Misson borehole (0.3 to -1.5 m) when compared to the GR Stein borehole (-1.5 to -5 m), possibly due to the effects of interaction with the surface water system in the low-lying River Idle floodplain. No long-term groundwater level trend is apparent and given that the abstraction PWS boreholes at Austerfield were installed in the 1920s and 1950s, the groundwater system is likely to have stabilised with respect to this abstraction.

Spatially, groundwater levels are strongly influenced by the presence of the large public water supply boreholes at Highfield Lane and Austerfield (Licence N o 03/28/82/012), operated by Yorkshire Water. Regional groundwater level contours have been produced for other studies in the area (Lillie and Smith, 2008) and an extract is reproduced on Drawing 1038/HIA/09 . These show that the regional groundwater flow direction within the Sherwood Sandstone is to the north and northwest at the site, towards public water supply abstractions. It also appears from this that groundwater levels around Newington Quarry have been lowered by around 2 m by the PWS abstraction at Austerfield.

Superficial sand and gravel Outside the site, groundwater levels in the superficial sand and gravel deposits are monitored by the Environment Agency in Unit 1 (Bawtry) and Unit 2 (Misson West) of the Idle Washlands SSSI. Data are available from two boreholes in the Misson West unit (Drawings 1038/HIA/07 and 1038/HIA/10 ), one of which, GWL2, is no longer monitored. In addition, a number of boreholes have been installed around the quarry by Hanson, as shown on Drawing 1038/HIA/10 .

Groundwater levels at the Environment Agency’s observation borehole in the Misson West Unit of the Idle Washlands (Newington GWL1) have been plotted together with levels in the River Idle on Drawing 1767/HIA/11. According to a topographic survey, the ground level within Misson West is generally at or just below 2 mAOD, while along the river bank it varies from 2.1 m to 2.9 mAOD. It is apparent that the water levels recorded in GWL 1 that are above 2.1 mAOD will represent surface water flooding of the Washland. Therefore, above this elevation the GWL 1 hydrograph follows the stage level in the River Idle. Once the river stage falls back into the channel, the groundwater levels drop sharply as the surface water drains away. In the summer months, the water level can be up to 1 m below the river stage level.

Within Newington Quarry, ten groundwater level monitoring boreholes were installed in June 1999. Since then, some of these boreholes have been destroyed during subsequent quarrying operations and others damaged due to farming activities. Several replacements for these have been installed over time, as well as additional boreholes in new locations. Groundwater hydrographs for the Hanson monitoring boreholes have been plotted separately for boreholes located to the north of Slaynes Drain ( Drawing 1767/HIA/12) and south of the Drain ( Drawing 1767/HIA/13). Response to various dewatering activities on the site are annotated on the hydrographs.

Drawing 1767/HIA/14 shows a comparison between groundwater levels in four site boreholes (Nos 4, 5, 8 and 12) located within 40 m of the river and the mean river stage and groundwater levels in the Idle Washlands. Two points are clear:

• Groundwater levels in the site boreholes are significantly below the river level (at least 1 m), despite their proximity to the river. This was also commented on in the 1994 RMC report,

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

which recorded average groundwater levels in three boreholes located within 60 m of the river of 0.72, 0.63 and 0.59 mAOD. • In the summer months the groundwater levels in the Misson West Washlands monitoring boreholes falls to similar levels as seen in the site boreholes. In times of high river level, these boreholes respond to surface water flooding.

This evidence suggests a complex relationship between the river and the shallow aquifers in the superficial deposits. The overall conclusion is that the there is a poor hydraulic connection between the river and the sand and gravel, probably as a consequence of thick silt deposits in the channel.

Groundwater level data are available from 1999, which indicate groundwater levels prior to working at Newington. No dewatering is required at Misson as the quarry floor is above the water table. Groundwater contours inferred from measurements in June 1999 are shown on Drawing 1038/HIA/10 . They indicate a groundwater flow to the northwest at a gradient of around 1 in 0.0021, slightly steeper than that reported in 1994 (1 in 0.0015) in the hydrogeological assessment for RMC (UK) Ltd. Subsequently, the groundwater flow pattern has been altered by dewatering at Newington North and South, as illustrated on Drawing 1038/HIA/15 .

Overburden Investigations undertaken by Hull University (Lillie and Smith, 2008) indicated variable water levels within the peat overburden with the absence of a uniform pattern or similarity with the underlying aquifer.

2.5.3 Aquifer properties Hydraulic conductivity Sand and gravel This was estimated by Leake (2000) based on the results of a wellpoint dewatering test undertaken in April 1990. Calculated values of transmissivity were 78 m 2/d and 81 m 2/d. At the time of the wellpoint test the saturated aquifer thickness averaged approximately 4.5 m thus equivalent hydraulic conductivity values of 17 m/d and 18 m/d were derived.

Peat Falling and rising head tests undertaken by Hull University (Golders Report, 2005) in three shallow piezometers installed within the peat indicate permeabilities in the range 7 x 10 -4 m/d to 0.4 m/d.

Sherwood Sandstone Values of hydraulic conductivity of the Sherwood Sandstone in the locality of the site were obtained from the Environment Agency Publication 8, ‘The physical properties of major aquifers in England and Wales’. Data from the closest locations to the Application Area are summarised in Table 1038/HIA/T8.

Grid reference Name of closest Distance from centre Transmissivity Hydraulic location to of Application Area (m 2/d) conductivity borehole (km) (m/d) 1 SK 6588 9449 Austerfield 2.25 100 2.2* 2 SK 6855 9510 Misson 1 130 2.5 3 SK 6885 9174 Harwell 2.5 n/a 7.1 * based on an estimate of aquifer thickness Table 1038/HIA/T8: Aquifer properties of the Sherwood Sandstone

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

2.5.4 Groundwater abstractions Licensed abstractions Details of licensed abstractions within a 2 km radius of the site boundary were obtained from the Environment Agency. Details of the abstractions are summarised in Table 1038/HIA/T9, and their locations are shown on Drawing 1038/HIA/07 .

ID Licence N o Name NGR (SK) Annual Type volume (m 3) 699 954 1 03/28/78/0003 W H Strawson 699 954 454,600 M 2 03/28/78/0005 G T Wagstaff 665 925 4,773 GFD 3 03/28/78/0025 G T Wagstaff 6679 9307 84,500 S 4 03/28/78/0026 J R & S E Dickinson 6709 9225 20,450 S 5 03/28/78/0027 Tunnel Tech 6734 9412 36,369 GFD 6 03/28/82/0006 Sutcliffe Farmers Ltd 685 969 72,736 S & GFD 7 03/28/82/0008 Sutcliffe Farmers Ltd 683 969 10,453 GFD 8 03/28/82/0010 Bawtry Carbon Int Ltd 659 945 40,914 P 660 954 9 03/28/82/0012 Yorkshire Water 9,955,740 PWS 662 963 1 Key: M – Mineral washing GFD – General agriculture, farming, domestic S – Spray irrigation P – Process water PWS – Potable water supply

Note: 1. The Yorkshire Water source comprises two boreholes, the second of which (Austerfield) is more than 2 km from the site boundary. Table 1038/HIA/T9: Licensed groundwater abstractions with 2 km of the site boundary

The most significant abstraction is the Yorkshire Water public water supply licence comprising two boreholes, Austerfield and Highfield Lane, both shown on Drawing 1038/HIA/07 . The combined licensed abstraction rate is currently 9,955,470 m 3/yr. During the Hull University investigation (Lillie and Smith, 2008) actual abstraction was averaging 80% of this rate. The apportionment of abstraction between the two boreholes is not known.

The closest abstraction is at Tunnel Tech and is approximately 90 m from the edge of the proposed Application Area at Newington West and 300 m from the edge of the proposed working area.

Unlicensed abstractions Details of unlicensed abstractions within a 2 km radius of the site were obtained from Bassetlaw District Council. Only 1 unlicensed source is known in the area and is located at Highwood Farm, Misson, 2.75 km from the boundary of the site.

2.5.5 Source protection zones The site lies within the outer source protection zone (SPZ) of the public supply borehole at Highfield Lane, located 2.5 km to the northwest.

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

2.6 The existing development

2.6.1 Site layout The current layout at Newington Quarry is summarised on Drawing 1038/HIA/16. The site can be divided into two areas:

• Newington North: This area has largely been restored following completion of quarrying in early 2012 and currently comprises low level restoration with two shallow water bodies.

• Newington South: This is the current area of operation, comprising six planned phases of working.

The current access route is off Bawtry Road and passes through Misson Quarry and along the eastern side of Newington North, before crossing Slaynes Drain into Newington South.

2.6.2 Current operations The quarry offices and parking area are located in the northern corner of Newington South, adjacent to the settlement lagoon (Drawing 1038/HIA/16). The current permitted workings comprise six Phases of working. Phases 1, 2 and 3 are completed and Phases 2 and 3 are partially restored. Phase 1 is partially restored and contains the current settlement lagoon and top soil storage. Phase 4 is currently (January 2015) active and overburden removal on Phase 5 has recently commenced.

The operation proceeds such that overburden stripped from a new phase is placed into the worked out area of the previous phase. As well as reducing soil handling this has the benefit of reducing groundwater inflow into previously worked areas, both reducing pumping costs and impacts to groundwater levels outside the site. The base of the workings are between -4.0 and - 4.5 mAOD.

2.6.3 Existing water management The sand and gravel deposit is largely below the water table and dewatering of the working area is required to allow dry working.

The current operational area in Newington South is dewatered by allowing gravity drainage from the working area to a sump at the eastern side of the workings. From there water is pumped up into a settlement lagoon. Water is then pumped, as required, from the lagoon via a pipeline into the River Idle at NGR SK 68920 94480. This discharge is undertaken under Environmental Permit T/78/46242/T/V001, which permits a discharge of 6480 m 3/d.

Daily discharge rates measured by Hanson since May 2013 vary between 80 and 6460 m 3/d, with discharge occurring on 337 out of a total of 607 days (55% of the time). Taking into account non-discharge days, the average discharge was 2496 m 3/d. On a monthly basis the data suggest that discharge has increased from around 60,000 m 3/month (ca 2,000 m 3/d) in May 2013 to 80,000 m 3/month (ca 2,600 m 3/d) in November 2014.

2.7 Conceptual hydrogeology

The site is located on a Secondary Aquifer comprising between 2 and 5 m of River Terrace sand and gravel, which directly overlies a Principal Aquifer, the Sherwood Sandstone. The sand and gravel is overlain by a variable thickness of Peat together with irregular thicknesses of clay and silt.

The sand and gravel is considered to be in hydraulic contact with the underlying sandstone. Groundwater levels are heavily influenced by public water supply abstractions to the northwest at

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

Austerfield and the general direction of groundwater flow is to the northwest, towards these abstractions. Groundwater levels are also considered to have been reduced by the presence of the PWS abstractions.

The peat deposits have a perched water table in relation to the regional water table in the Sherwood Sandstone. The water level in these deposits may have been reduced by increased downward leakage as the regional water level has fallen due to abstraction pressures.

The site lies adjacent to the River Idle, but is separated from it by a flood defence embankment. Under certain conditions, flood water is allowed to flow into Slaynes Drain to allow water to be stored temporarily.

The previous and current phases of quarry working have required dewatering to allow dry working conditions. There is no on-site use of water, apart from dust control, and all the water entering the site is discharged, via settling lagoons, into the River Idle. Modelling undertaken in support of studies by Hull University has indicated that dewatering at Newington has a relatively localised effect in relation to the aggregates extraction, and is contained within the site area. This is largely supported by the groundwater level records collected in the site observation boreholes.

Groundwater level data collected by Hanson and the Environment Agency show that water levels in the sand and gravel are up to 1 m below the level in the River Idle. Groundwater level variation in these boreholes is also very subdued and does not follow river levels, as might be expected in sand and gravel deposits this close to a river. It is therefore considered that the hydraulic connection between the river and the sand and gravel is very poor and the presence of the river may not have a significant impact on groundwater flow into the proposed excavation.

An idealised section through Newington South is shown on Drawing 1038/HIA/17 to illustrate the conceptual understanding at the site.

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

3 THE PROPOSED DEVELOPMENT and RESTORATION

3.1 General

The proposed development comprises two separate Planning Applications, Newington South and Newington West, as described below and shown on Drawing 1038/HIA/18 . It is intended that working in Newington West will only commence towards the end of operations in Newington South and only a short period of overlap is anticipated.

In both areas, as-dug mineral will transported to Hanson’s site at Auckley for processing and there are no requirements for mineral processing water on-site. A small amount of water will be required for dust suppression.

Newington South It is proposed to enlarge currently permitted workings within the existing Planning Permission boundary towards the south into what is known as the Newington South Additional Working Area (AWA).

The Newington South AWA is estimated to contain approximately 150,000 tonnes of sand and would be worked over a period of 12 months in two Phases (Phases 7 and 8 on Drawing 1038/HIA/18 ). These phases lie between the currently permitted area and the flood defence barrier. The workings will have a minimum standoff of 9 m from the toe of the barrier. The area is currently in use as arable farmland and elevations vary from 1.4 to 2.0 mAOD, rising slightly from east to west.

The base of the proposed excavation is expected to be around – 4.0 mAOD and the mineral will be worked in the same manner to that used in the current operational area.

Newington West Newington West is a new extension containing 350,000 tonnes of sand and would be worked over a period of approximately 2 to 3 years in three Phases, working from south to north (Drawing 1038/HIA/18 ). Only the eastern side of this area will be worked, the northwestern section, adjacent to Bawtry Road and Newington Farm, has no economically workable mineral and will be used for soil and overburden storage. Ground levels are variable across the site. There is a ‘ridge’ of slightly higher ground in the south that rises to 3.8 mAOD, above the surrounding area which varies from 1.7 to 2.3 mAOD. To the northwest the ground rises to over 6 m along the western site boundary.

The base of the excavation is expected to be around -4.0 mAOD and the mineral will be worked in a similar manner to that used in the current operational area of Newington South.

3.2 Water management during mineral extraction

3.2.1 Newington South AWA The Newington South AWA is essentially an expansion of the existing permitted workings and water management will continue in a similar manner to the current operation. Water entering the void will be drained to a sump at the deepest point from where it will be pumped to the existing settling lagoon located adjacent to the site offices. From the settlement lagoon water will be pumped via a pipeline to the existing discharge point on the River Idle.

Rainfall The volumes of rainfall-derived water have been calculated based on the long-term averages provided in Section 2.2 of this report. The mean annual rainfall is 592 mm, assuming a catchment area of 22.4 ha (the maximum extent of current and proposed workings) and that

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

100% of rainfall reaches the quarry floor, the mean daily calculated inflow to the quarry void from rainfall is 364 m3. This equates to a continuous flow rate 4.2 l/s.

Groundwater inflow The previous estimate of groundwater inflow into the maximum extent of the current permitted Newington South working area (Hafren Water, 2008) was 28 l/s. However, based on estimates by Hanson for dewatering volumes from Newington North, the 2008 report suggested that the maximum likely inflow to the workings could be up to 53 l/s (4,579 m 3/d). The current measured average discharge is around 2,600 m3/d (30 l/s), with roughly 60% of the approved working area being dewatered.

The volume of groundwater ingress at the maximum extent of the quarry, ie the current operational area plus the AWA, has been estimated using the steady-state equation for a fully penetrating well in an unconfined aquifer (Dupuit-Forchemier). Details are given in Appendix 1038/HIA/A3. This gives a maximum inflow of approximately 2,900 m 3/d, or 33 l/s. As this is already close to the current inflow rates, it is likely to be an under-estimate of the actual inflow at the maximum extent of the quarry. The following also need to be considered:

• Some inflow from the Sherwood Sandstone aquifer may occur, although this will be limited by the relatively low vertical hydraulic conductivity of the sandstone, • Inflows from the north will be reduced due to the partial removal of sand and gravel in the Newington North workings and replacement with lower permeability restoration materials, • The estimated flow rates are based on the whole working area being open to the aquifer at the maximum extent of the workings. In reality, as mineral extraction progresses the working face of the extraction will be progressively restored and restoration material pushed up the resulting slopes. This will reduce inflows to the working area.

Given the uncertainties noted above, it is considered that an inflow of around 5,000 m 3/d remains a realistic upper limit for the whole of the Newington South area, including the AWA.

As the proposed workings in the AWA are closer to the River Idle, groundwater inflows on the southern quarry face may be greater than those into the current workings. As a consequence of raised river levels in the winter, there may be increased leakage to the aquifer and consequently increased inflow to the workings. It would be possible to compensate for this by scheduling the working area appropriately.

Dewatering volume The total volume of water required to be removed from the operational area equates to the groundwater inflow volume plus the average rainfall ingress volume (4.2 l/s).

The existing Environmental Permit allows for a discharge of 75 l/s (6,480 m 3/d) and this is considered to be sufficient for the enlargement of the workings into the Additional Working Area.

River Idle The closest approach of the River Idle to the working area is at the western end of phase 8, when it will be approximately 30 m away. The edge of the workings will be a minimum of 9 m from the toe of the flood defence embankment. Observation borehole 12 is close to this point and, as with other monitoring points this close to the river, confirms the significant elevation difference between the groundwater and river level, indicating a poor hydraulic connection between the sand and gravel and the river.

Quarry workings close to the River Idle are not unusual and sites operated by other companies have successfully extracted sand and gravel at similar distances.

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

3.2.2 Newington West In Newington West, water entering the void will be drained to the deepest point of the excavation from where it will be pumped to the dewatering lagoon (located in Newington North) for settlement. From there water will be pumped via a pipeline to a discharge point (approximately NGR SK 67680 93700) on the River Idle. A discharge pipeline is already in place, previously used in 2013/14 to pump excess flood water to the River Idle using a temporary discharge permit. When the dewatering is in operation in Newington West it is anticipated that dewatering in the southern area will have been completed and the discharge point of the current consent can be relocated.

Rainfall The volumes of rainfall-derived water have been calculated based on the long-term averages provided in Section 2.2 of this report. The mean annual rainfall is 592 mm, assuming a catchment area of 7.3 ha (the maximum extent of the proposed workings) and that 100% of rainfall reaches the quarry floor, the mean daily calculated inflow to the quarry void from rainfall is 73 m3. This equates to a continuous flow rate only 0.8 l/s.

Groundwater inflow The volume of groundwater ingress at the maximum extent of the quarry has been estimated using the steady-state equation for a fully penetrating well in an unconfined aquifer (Dupuit- Forchemier). Details are given in Appendix 1038/HIA/A3. This gives a maximum inflow of approximately 1,700 m 3/d, or 19.6 l/s, assuming the whole working area is open.

The following also need to be considered: • Some inflow from the Sherwood Sandstone aquifer may occur, although this will be limited by the relatively low vertical hydraulic conductivity of the sandstone, • Inflows from the east will be reduced due to the partial removal of sand and gravel in the Newington North workings and replacement with lower permeability restoration materials, • The estimated flow rates are based on the whole of each are being open to the aquifer at the maximum extent of the workings in each area. In reality, as mineral extraction progresses the cut face of the extraction will be progressively restored and restoration material emplaced against the resulting slopes. This will reduce groundwater inflows to the working area.

Previous estimates by Hanson of dewatering rates from Newington North were around 53 l/s, suggesting that the use of steady-state equations to estimate the dewatering give an under- estimate of inflow in these conditions.

Dewatering volume The total volume of water required to be removed from the operational area equates to the groundwater inflow volume plus the average rainfall ingress volume (0.8 l/s).

The existing Environmental Permit allows for a discharge of 75 l/s (6,480 m 3/d) and this is considered sufficient for this area, provided dewatering has ceased in Newington South. If dewatering would still be operating in Newington south, then a temporary increase may be needed, depending on the actual discharge rates at the time.

3.3 Proposed restoration

The primary purpose of the restoration is to increase the ecological interest and habitat diversity of the area. Details of the proposed restoration are shown on the plans which accompany the Environmental Statement

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

In Newington South, the northern half of the site will be restored to wet and dry grassland with a ditch network. The southern half of the site will be restored to reedbeds and wet grassland. Water levels in the reedbeds and the dich network will be controlled with a series of control structures, ultimately allowing discharge to the River Idle.

Restoration of Newington West will be to wet and dry grassland with reedbeds fringing a number of ponds.

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 ASSESSMENT OF IMPACTS

4.1 Methodology

An assessment of the potential effects of the proposed mineral extraction at Newington Quarry on the water environment within the site and its surrounds has been undertaken.

Potential impacts to the baseline and current conditions were assessed. Short-term (operational) and long-term (post-restoration) phases of site development were considered. The potential for unplanned incidents, such as spillage of hazardous substances, was also taken into account. The following factors were considered:

Magnitude of the impact
Spatial extent of the impact
Frequency of the impacts
Timescale over which the impact may occur
Cumulative impacts
Sensitivity of the receiving environment

Mitigation measures and residual impacts have been considered as part of the assessment. The method of assessment is detailed in Appendix 1038/HIA/A1 together with the matrices used to provide a robust method of assessment. Mitigation measures and residual impacts are discussed in Section 6.

4.2 Baseline sensitivity

The characteristics of the baseline water environment are used to form a basis from which the impact assessment can be undertaken. Details of how the baseline on catchment sensitivity is assessed are provided in Table 1038/HIA/A1.1 of Appendix 1038/HIA/A1 .

The site is located on superficial deposits classed by the Environment Agency as Secondary A Aquifer lying directly over a Principal Aquifer, the Sherwood Sandstone. There are a number of licensed groundwater abstractions within 2 km of the site boundary, including a major public water supply abstraction.

The closest watercourse to the Application Areas is the River Idle. Due to its meandering course at this point, the distance between the river and the proposed excavation areas varies from 250 m (Newington West) to 30 m at the western end of Newington South extension.

There are a number of water-dependent sites of conservation interest within a 2 km radius of the site, including the Idle Washlands SSSI. Unit 2 (Misson West) is only 30 m south of the Newington South AWA, while Unit 1 (Bawtry) is 430 m west of Newington West.

For both Application Areas, the overall catchment sensitivity due to the presence of the designated conservation sites is ‘high’.

4.3 Potential operational impacts

4.3.1 Groundwater flow regime The water management methods detailed within this report will locally modify the groundwater flow regime. The anticipated lateral and vertical extent of such modification is, however, anticipated to be very small in relation to the Sherwood Sandstone aquifer, consequently mitigation measures are not proposed. No consumptive use of water, other than minimal amounts for dust suppression, is proposed and all dewatering water will be discharged to the

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 surface water system. The proposed working will last approximately 4 years and, therefore, any impacts will be temporary.

For both Application Areas, the scale of impacts are considered to be ‘negligible’ in terms of the regional Sherwood Sandstone aquifer, with a significance of ‘minor’.

4.3.2 Groundwater quality Potential to impact upon groundwater quality arises from the operation of mobile plant. The majority of the mineral is situated beneath the watertable therefore the groundwater flow direction will be towards the quarry voids in both Application Areas. In the unlikely event that contaminants were present on the quarry floor they would be precluded from entering the underlying aquifer due to the prevailing groundwater flow direction. Although major public water supply abstractions are at a sufficient distance from the quarry that any detectable impact is unlikely, there is a licensed abstraction for industrial use within 300 m of the proposed Newington West working area.

All fuels, oils and lubricants requiring storage on-site are held within a bunded container, as required under planning Condition 11 for the existing planning permission. In the event of smaller accidental spills from mobile plant within the quarry, spillage containment and clean up kits are held on site at the site offices for rapid response. A site specific emergency response plan is already in place, last updated in September 2009 (Ref: UKCP09.F1).

Due to the precautions in place at the site, accidental spillages of hydrocarbons are considered to have the potential for a ‘negligible’ impact on groundwater with a significance of ‘minor’

4.3.3 Groundwater levels Some impact on groundwater levels is anticipated due to the dewatering that is required to maintain dry working conditions.

Newington South In Newington South, the impact on groundwater levels of extending the current workings into the Additional Working Area will be to extend the area of influence of the quarry further to the south. To provide an estimate of this it has been assumed that the River Idle is largely disconnected hydraulically from the groundwater system (see Section 2.7). An estimate of the radius of influence of dewatering have been made using the Sichardt equation, as given in CIRIA publication 515 ( Appendix 1038/HIA/A3). This gives a radius of influence of 216 m.

Due to the fact that restoration is undertaken continuously as workings proceed, with overburden stripped ahead of the working phase being placed in the void left after the previous phase has been worked, the greatest impact is likely to be limited to the actual working face at any one time.

Newington West The radius of influence of the Newington West workings, at their greatest extent, is estimated to be 195 m.

Specific impacts to abstraction and sites of ecological interest are addressed in the sections below. The impact on groundwater levels from dewatering is using ten (10) groundwater monitoring boreholes within and around the perimeter of the site, as required by the current working scheme approved on 16/10/2002 under PP ref: 1/32/00/18 and varied by PP Ref: 1/32/07/00002. Monitoring are recorded and results forwarded annually to the Mineral Planning Authority.

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

It is considered that the impact of the dewatering on groundwater levels will be ‘negligible’ with a significance of ‘minor’.

4.3.4 Sites of ecological interest Statutory sites Units 1 and 2 of the Idle Washlands SSSI are close to the proposed site. The importance of the River Idle Washlands SSSI is primarily as a wetland area for wintering birds. It is understood that the Environment Agency and Natural England recognise that the site had deteriorated in ecological interest due to a reduction in the frequency of its inundation. More recently the status of the site appears to have shown some recovery.

The proposed mineral working at Newington West will be approximately 500m from the eastern boundary of Unit 1 of the SSSI. This is considered to be at a sufficient distance from the area of dewatering (see above) to be unaffected by the proposal.

Unit 2 is immediately south of the proposed Newington South Additional Working Area and groundwater levels beneath the northern part of this Unit will be temporarily (12 months) lowered. The conservation status of the Unit is linked to the frequency of inundation, rather than groundwater levels. Groundwater levels have already been lowered as a consequence of PWS abstraction and the current workings in Newington South are likely to have had some additional impact. It is possible that further lowering of groundwater levels may result in additional downward leakage from the Peat deposits during prolonged dry periods.

It is considered that the impact of the dewatering on the conservation status of Units 1 and 2 of the Idle Washlands will be ‘negligible’ with a significance of ‘minor’.

Non-statutory sites The previous working areas, the current quarry and proposed working areas are all within the Slaynes Lane Local Wildlife Site. This area has been protected from regular flooding by the flood defence barrier along the River Idle. This alteration to natural water levels and farming activities have degraded the original conservation value of the area. However, parts of the former quarry workings have been restored to a lower level allowing the re-establishment of a wetland conservation area, which should have beneficial effects.

There is potential for water levels in the shallow waterbodies in the restored Newington North area, located immediately adjacent to the proposed Newington West workings, to be lowered as a consequence of dewatering. If this occurred during the bird breeding season there may be impacts on the survival rates of young birds.

Other Local Wildlife sites are considered to be at a sufficient distance from the site as to be unaffected by any local changes in groundwater level. They will also be unaffected by discharge of dewatering water into the River Idle.

It is considered that the impact of the dewatering on non-statutory conservation status will be ‘negligible’ with a significance of ‘minor’. The exception is the potential impact to water levels in shallow lakes in Newington North, this is considered to be ‘low’ magnitude, with a significance of ‘moderate’. Mitigation measures are proposed in Section 6.

4.3.5 Surface water flow Impacts from dewatering The channel of the River Idle will be approximately 30 m from the edge of the proposed Newington South AWA at their closest approach at the western end of Phase 8. Observation borehole 12 is close to this point and indicates that the river/aquifer connection is poor. Due to the short length of the working area that approaches this close to the river and the limited time

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 the workings are likely to be open, significant leakage from the river is not expected. Any leakage that does occur will be compensated by the return of dewatered water into the river.

It should also be noted that there are numerous past sand and gravel workings alongside the River Idle which extracted mineral close to the channel without any adverse impacts.

Newington West is considered to be at a sufficient distance from the River Idle to have insignificant impact on river flows.

It is considered that the impact of the dewatering on surface water flow will be ‘negligible’ with a significance of ‘minor’.

Impacts from dewatering discharge The existing Discharge Consent permits a maximum discharge of 6,480 m 3/d (75 l/s) to the River Idle, although the current measured discharge rate is around 2,600 m 3/d, on average. A maximum suspended solids content of 50 mg/l is permitted. The existing consent should be sufficient for the proposed operations in both Newington South and Newington West. The consent includes a condition requiring a comprehensive record to be kept of discharge, using a flowmeter.

The current average discharge into the River Idle represents less than 1% of the combined mean flow of the Rivers Idle and Ryton (Table 1038/HIA/T3) and approximately 2% of the Q95.

It is considered that the impact of the discharge on surface water flow will be ‘negligible’ with a significance of ‘minor’.

4.3.6 Surface water quality Surface water quality is potentially at risk from the discharge of suspended solids from the site or from hydrocarbons accidentally spilt from mobile equipment operating within the site.

Water from dewatering the workings in both Application Areas will undergo treatment within a settlement lagoon prior to discharge off-site to ensure the maximum suspended solids requirement of 50 mg/l is met.

With this system in place it is considered that impact on surface water quality from fines entrained in the site discharge will be ‘negligible’ with a significance of ‘minor’.

All fuels, oils and lubricants requiring storage on-site are held within a bunded container, as required under planning Condition 11 for the existing planning permission. In the event of smaller accidental spills from mobile plant within the quarry, spillage containment and clean up kits are held on site at the site offices for rapid response. Discharge from either the quarry sump and/or the settlement lagoon can be halted while any clean-up is in progress. A site specific emergency response plan is already in place, last updated in September 2009 (Ref: UKCP09.F1).

Accidental spillages of hydrocarbons are considered to have the potential for a ‘negligible’ impact on surface water with a significance of ‘minor’.

4.3.7 Groundwater abstractions The closest groundwater abstraction (Tunnel Tech) is located approximately 300 m west of the proposed western limit of mineral extraction in the Newington West Application Area. Records of the well are confidential however it is assumed that it derives water from the Sherwood Sandstone.

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

Estimates of the radius of influence of site dewatering on groundwater levels in the shallow sand and gravel aquifer suggest that there will be no impact at the abstraction borehole. In addition, as the borehole is likely to be abstracting at depth in the Sherwood Sandstone, fluctuations in groundwater levels in the superficial sand and gravel are considered unlikely to impact on the abstraction.

There are no groundwater abstractions close enough to the Newington South AWA to be affected by dewatering.

It is considered that the impact of the dewatering on abstraction will be ‘negligible’ with a significance of ‘minor’.

4.3.8 Surface water abstractions Ten licensed abstractions are sourced from surface water within a 2 km radius of the site boundary. Nine of the abstractions are from the River Idle and will thus be unaffected by the proposed development. One is sourced from within an extensive ditch east and southeast of the site. It is located on the opposite bank of the River Idle from the site and therefore the potential for impact is considered to be small.

Impacts on surface water abstraction licences are considered to be ‘negligible’, with a significance of ‘minor’ .

4.3.9 Flooding The impacts of the operational site on flooding have been addressed in the accompanying Flood Risk Assessment.

4.4 Restored site

4.4.1 Groundwater flow The overall groundwater regime in the vicinity of the site is dominated by the impact from the large public water supply abstraction at Austerfield. Groundwater levels have been lowered below their natural level, with a flow direction to the northwest.

After completion of mineral extraction and restoration, the groundwater flow regime will return to a situation which will be similar to that which existed prior to the commencement of mineral extraction in the locality. The presence of surface water bodies within the site may lead to a small reduction in the local groundwater gradient, but this is unlikely to be significant outside the site.

Impacts from the restored site on the groundwater flow regime are considered to be ‘negligible’ with a significance of ‘minor’.

4.4.2 Groundwater quality The site is being restored to a conservation use. Restoration materials are derived from the site itself with some fines from processing the product. No potentially contaminated materials will be imported. No post-restoration activities are proposed that could release contamination.

The potential for adverse impacts on groundwater quality are considered ‘negligible’ with a significance of ‘minor’.

4.4.3 Sites of ecological interest Both Application Areas will be restored to conservation use and this is expected to help maintain, or improve, the conservation status of the adjacent Idle Washlands SSSI.

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

The potential for adverse impacts on conservation sites are considered ‘negligible’ with a significance of ‘minor’.

4.4.4 Surface water flow and quality As noted in Section 4.4.2, neither the restoration materials nor the post-restoration land use have the potential to release contaminants into the surface environment. The site lies within the area protected by the flood defence barrier and, therefore, does not have the potential to impact on flows in the River Idle while the river is contained within the barrier. The removal of sand and gravel will increase the volume available for flood storage within the Misson West flood storage facility.

The restored site will have a negligible impact on the surface water flow system and water quality compared to the pre-development situation, with a significance of ‘minor’.

4.4.5 Flooding The impacts of the restored site on flooding have been addressed in the accompanying Flood Risk Assessment.

5 Water Framework Directive assessment

5.1 Introduction

The Water Framework Directive (WFD) was implemented in England and Wales by The Water Environment (Water Framework Directive) (England and Wales) Regulations 2003. The WFD requires that all countries throughout the EU manage the water environment to consistent standards. These require that each country:

Prevents deterioration in the status of aquatic ecosystems, protect and improve the ecological condition of waters,
Aim to achieve at least ‘good’ status for all waterbodies by 2015. Where this is not possible, and subject to the criteria set out in the Directive, aim to achieve good status by 2021 or 2017,
Meet the requirements of Water Framework Directive Protected Areas,
Promote sustainable use of water as a natural resource,
Conserve habitats and species that directly depend on water,
Reduce or phase out the release of individual pollutants or groups of pollutants that present a significant threat to the aquatic environment,
Progressively reduce the pollution of groundwater and prevent or limit the entry of pollutants,
Contribute to mitigating the effects of floods and droughts.

If a project is shown to result in an adverse impact to a waterbody causing a potential deterioration in status or if it prevents the actions which are required to raise the status of the waterbody, then the project must be assessed and justified with mitigation proposed as is specified in Article 4.7 of the WFD.

Sections 5.2 and 5.3 provide a preliminary assessment of the proposed extension to Newington Quarry in order to determine whether the works are WFD compliant, or will cause an adverse impact.

5.2 River Basin Management Plan and waterbody status

The site lies within the Humber River Basin Management Plan (RBMP). Details of the environmental objectives for the two relevant waterbodies are reproduced in Appendix

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

1038/HIA/A4, taken from Annex B of the River Basin Management Plan for the Humber River Basin District, as updated in January 2011.

Groundwater The relevant groundwater unit is the Idle-Torne PT Sandstone Nottinghamshire & Doncaster Waterbody (ID: GB40401G301500). The current quantitative status is ‘Poor’ and the current chemical quality is ‘Poor’. The objective is to meet good quantitative status and good chemical status by 2027, the justification for not achieving good status by 2015 is that measures are either disproportionately expensive, or technically infeasible.

The main pressures on groundwater are abstraction for drinking water and contamination from nitrates and pesticides.

Surface water In terms of surface water, the River Idle is within the ‘River Idle from the River Ryton to River Trent’ Waterbody (ID: GB104028058110). This has a hydromorphological status of ‘Artificial’, a current ecological quality of ‘Poor potential’ and chemical quality of ‘Fail’. The objective is to meet good quantitative status and good chemical status by 2027, the justification for not achieving good status by 2015 is that measures are either disproportionately expensive, or technically infeasible.

The key reason for failure for reaching good status is reportedly due to point source discharges from sewage works discharge specifically due to pollution from phosphate.

5.3 Assessment

A described in previous sections, the impact of dewatering is at a local scale and not significant in terms of the groundwater body as a whole. In addition, water pumped from the site is returned to the environment with no consumptive use on site. Operation of the site will not impact on measures taken to reduce public water supply abstraction, or reduce the input of pesticides and nitrate to groundwater.

There is not expected to be any significant increase in leakage from the River Idle to groundwater as a result of the proposed works and if this did occur, it would be mitigated by the return of water to the river. The length of river potentially affected by increased leakage would be less than 1 km. The proposed works would not have any impact on the quality designation with reference to high levels of phosphate. Procedures in place during the site operation will ensure that in the event of an accidental release of hydrocarbons, the impacts will be confined to the site and no contaminants would be released to the river.

The proposed workings will operate for 3 to 4 years in total, with operations expected to be completed in 2019/20. The site will be restored to conservation use with consequent benefits to the environment.

It is considered that the hydrological and hydrogeological assessment has shown that the proposed development will have no impact on the quantitative or qualitative status of either the groundwater or surface water WFD waterbodies.

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

6 MITIGATION MEASURES

6.1 Introduction

The review of sensitive ecological sites has indicated that no impacts on statutory sites from the proposed quarry would be expected and consequently specific mitigation measures are not required.

A potential impact to water levels in the recently restored lakes in Newington North has been identified and mitigation measures are proposed.

6.2 Newington North

A small risk has been identified to lake levels in the restored Newington North area which may be lowered by dewatering in the Newington West extension. The critical period for maintaining appropriate water levels is while birds are nesting (ie spring time).

Appropriate mitigation measures include installation of a level gauge in the lake that would be monitored during the relevant breeding season. If lake levels fall below pre-determined trigger level, clean water would be discharged from the settlement lagoon into the lake instead of to the River Idle. Discharge would cease once the appropriate water level was re-established. This would only have to be operated for the duration of the Newington West workings, anticipated to be 2 to 3 years.

With this measure in place, impacts to the lakes are expected to be ‘negligible’ with a significance of ‘minor’.

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

7 CONCLUSIONS

Hanson UK operates Newington Quarry, located 14 km southwest of Doncaster, for the production of sand and gravel for construction. The company is seeking Planning Permission to expand the current permitted working area within the Newington South planning boundary, southwards into an area known as Newington South Additional Working Area (AWA). In addition a second Planning Permission is sought for a new extension to the west of the restored workings at Newington North, known as Newington West. Both Newington West and Newington South AWA are currently in use as arable farmland.

It is proposed that Newington West will be restored to conservation use, comprising wetlands, reedbeds and wet grassland. Restoration of the Newington South AWA will be incorporated into the restoration to conservation use already approved for the current working area.

Newington Quarry lies on low ground adjacent to the River Idle. The past, current and proposed future extensions are all within the floodplain of the River Isle at elevations between 1.9 and 6 mAOD, but are effectively protected from flooding by a flood defence barrier maintained by the Environment Agency.

The site lies on superficial deposits comprising, peat, clay, silt and sand and gravel, underlain by over 280 m of Sherwood Sandstone.

The superficial deposits form a locally important aquifer, classed by the Environment Agency as a Secondary A Aquifer. The underlying Sherwood Sandstone is classed as a Principal Aquifer and is a major resource for public water supply abstraction. The nearest licensed abstraction is 250 m east of the proposed extension at Newington West, while the closest PWS abstraction is 2.5 km away at Austerfield.

The closest statutory wildlife site is the Idle Washlands SSSI, which comprises 4 individual units. One of these units (Unit 2: Misson West) is immediately south of the Newington South AWA and a second (Unit 1: Bawtry) 500 m to the west of the Newington West extension. It is recognised that the conservation status of the SSSI is largely dependent on frequent flooding from the River Idle.

Groundwater levels beneath the site have been lowered due to the impact from the public water supply abstraction at Austerfield. The gradient is to the northwest, towards this abstraction.

The economic mineral at both Newington South AWA and Newington West is largely below the water table and dewatering will be required to ensure working can be continued in dry conditions, as is currently the case. Groundwater inflow to the voids will be gravity-drained to a sump from where water will be pumped to a settlement lagoon and from there to the River Idle. The current Environmental Permit for the discharge is likely to be suitable for proposed developments.

An assessment of impacts from the proposed extensions has been made with consideration of groundwater and surface water flows and the quality and proximity of local areas of ecological interest and water abstractions. Impacts of the proposed operation have been assessed against the current conditions around the site, while impacts following restoration have been assessed against the pre-development situation.

The sensitivity of the surface and groundwater catchments for both Application Areas has been assessed as being ‘high’ due to the presence of licensed groundwater abstraction and a nearby water-dependent SSSI.

Newington South The potential impacts of the development on surface water, groundwater, sites of ecological

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 interest and surface and groundwater abstraction have been considered. If the development is undertaken in accordance with the scheme and the control measures contained therein, residual impacts are considered to be negligible with a significance of minor.

No adverse impacts from the proposed restoration to conservation use have been identified.

The proposed extension will have no impact on the current or future quantitative status of the relevant surface water or groundwater bodies, as defined under the Water Framework Directive.

Newington West The potential impacts of the development on surface water, groundwater, sites of ecological interest and surface and groundwater abstraction have been considered. If the development is undertaken in accordance with the scheme and the control measured contained therein together with the mitigation measures outlined in Section 6.2, the residual impacts are considered to be negligible with a significance of minor.

No adverse impacts from the proposed restoration to conservation use have been identified.

The proposed extension will have no impact on the current or future quantitative status of the relevant surface water or groundwater bodies, as defined under the Water Framework Directive.

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 DRAFT

DRAWINGS

February 2015

P:\Projects\Newington\Newington 14\Reports\HIA Report\Draft\1038_HIA Draft v3.doc

NEWINGTON Level gauge 4.5

4.0

3.5

3.0

2.5

2.0

Stage elevation (mAOD) elevation Stage 1.5

1.0

0.5 Elevation of Slaynes Drain spill weir 0.0 01-Jan-97 01-Jan-02 01-Jan-07 01-Jan-12

MATTERSEY EM flow gauge 25

20

15

10 Flow (m3/s) Flow

5

0 01 Jan 1997 01 Jan 2002 01 Jan 2007 01 Jan 2012

Contains Environment Agency information © Environment Agency and database right Client: Title: Barkers Chambers, Barker Street, Shrewsbury, Hanson UK River stage and flow on the River Idle Shropshire, UK, SY1 1SB Howley Park Tel: 01743 355770 Quarry Lane, Dewsbury Project: Newington Quarry Date: Feb-15 Fax: 01743 357771 West Yorkshire, WF12 7JJ Drawing: 1038/HIA/03 Scale: n/a

P:\Projects\Newington\Newington 14\Working\Surfer\Water levels

2

0

-2

-4

-6

-8

-10 Groundwater (mAOD) level Groundwater

-12

-14

-16 G.R.STEIN REFRACTORIES MISSON -18 01/01/1976 31/12/1980 31/12/1985 31/12/1990 01/01/1996 31/12/2000 31/12/2005 31/12/2010

Contains Environment Agency information © Environment Agency and database right Client: Title: Barkers Chambers, Barker Street, Shrewsbury, Hanson UK Groundwater hydrographs for the Sherwood Sandstone Shropshire, UK, SY1 1SB Howley Park Tel: 01743 355770 Quarry Lane, Dewsbury Project: Newington Quarry Date: Feb-15 Fax: 01743 357771 West Yorkshire, WF12 7JJ Drawing: 1038/HIA/08 Scale: n/a

P:\Projects\Newington\Newington 14\Working\Surfer\Water levels Site location

Regional groundwater contours (mAOD)

Observation borehole)

Source: Lillie & Smith, 2008 (after Golders, 2006) Barkers Chambers, Barker Street, Client: Title: Sherwood Sandstone: Regional Shrewsbury, Shropshire, UK, Hanson UK SY1 1SB Howley Park groundwater contours Tel: 01743 355770 Quarry Lane, Dewsbury Project:Newington Quarry Date: Feb-15 West Yorkshire, WF12 7JJ www.hafrenwater.com Drawing:1038/HIA/09 Scale: nts

P:\Projects\Newington\Newington 14\Reports\HIA Report\Drawings\Drawing 1038_HIA_09 Sherwood sandstone contours

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5 River Idle NEWINGTON GWL 1 0.0 01-Jan-97 01-Jan-02 01-Jan-07 01-Jan-12

Contains Environment Agency information © Environment Agency and database right Client: Title: Barkers Chambers, Barker Street, Shrewsbury, Hanson UK Comparison between river stage level and groundwater level in Unit 2 Shropshire, UK, SY1 1SB Howley Park of the Idle Washlands SSSI Tel: 01743 355770 Quarry Lane, Dewsbury Project: Newington Quarry Date: Feb-15 Fax: 01743 357771 West Yorkshire, WF12 7JJ Drawing: 1038/HIA/11 Scale: n/a

P:\Projects\Newington\Newington 14\Working\Surfer\Water levels 3.0 Extraction in Newington North (NN) (2002 to March 2012) 2.0

1.0 F 2 2R 0.0 F 6 10 -1.0

-2.0

Groundwater (mAOD) Level Groundwater Response to dewatering

-3.0 Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 Jan-12 Jan-13 Jan-14 Jan-15 3.0 Pumping from Newington North 2.0

1.0 F 1

1R 0.0 3

-1.0 3R 14

Groundwater (mAOD) Level Groundwater -2.0 Water level recovery after pumps at NN switched off F - Site flooded -3.0 Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 Jan-12 Jan-13 Jan-14 Jan-15

Client: Title: Barkers Chambers, Barker Street, Shrewsbury, Hanson UK Groundwater hydrographs for Newington Quarry north of Slaynes Shropshire, UK, SY1 1SB Howley Park Drain Tel: 01743 355770 Quarry Lane, Dewsbury Project: Newington Quarry Date: Feb-15 Fax: 01743 357771 West Yorkshire, WF12 7JJ Drawing: 1038/HIA/12 Scale: n/a

P:\Projects\Newington\Newington 14\Working\GW Level data v2 with corrections 3.0 Extraction commenced NS 2.0

1.0 F F 7

0.0 8

9 -1.0

-2.0 Groundwater (mAOD) Level Groundwater

-3.0 Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 Jan-12 Jan-13 Jan-14 Jan-15

3.0

2.0 4 F 1.0 4R F 5 0.0 12

-1.0 13 Pumping to dewater NN workings for restoration -2.0

Groundwater (mAOD) Level Groundwater F - Site flooded -3.0 Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 Jan-12 Jan-13 Jan-14 Jan-15

Client: Title: Barkers Chambers, Barker Street, Shrewsbury, Hanson UK Groundwater hydrographs for Newington Quarry south of Slaynes Shropshire, UK, SY1 1SB Howley Park Drain Tel: 01743 355770 Quarry Lane, Dewsbury Project: Newington Quarry Date: Feb-15 Fax: 01743 357771 West Yorkshire, WF12 7JJ Drawing: 1038/HIA/13 Scale: n/a

P:\Projects\Newington\Newington 14\Working\GW Level data v2 with corrections 4.0

3.5

3.0

2.5

2.0

1.5 Elevation Elevation (mAOD)

1.0

0.5 Site Flooded Site Flooded Site

0.0 NEWINGTON GWL 1 River Idle: Mean stage level 4 5 8 12 -0.5 01-Jan-97 01-Jan-02 01-Jan-07 01-Jan-12

Contains Environment Agency information © Environment Agency and database right Client: Title: Barkers Chambers, Barker Street, Shrewsbury, Hanson UK Comparison between river stage level and adjacent groundwater Shropshire, UK, SY1 1SB Howley Park levels Tel: 01743 355770 Quarry Lane, Dewsbury Project: Newington Quarry Date: Feb-15 Fax: 01743 357771 West Yorkshire, WF12 7JJ Drawing: 1038/HIA/14 Scale: n/a

P:\Projects\Newington\Newington 14\Working\Surfer\Water levels

Newington North Newington South (Restored)

R. Idle

Flood defence barrier Slaynes Drain

Discharge Peat/Topsoil Poor connection between river and aquifer (low leakage rate) Sand Clayey Silt Silty sand Peat Clay

silt Quaternary gravelly sand

Approx - 5.5mAOD Sherwood Sandstone

Overburden material Local groundwater Regional groundwater flow flow into quarry void towards PWS abstractions

Barkers Chambers, Client: Title: Barker Street, Shrewsbury, Hanson UK Conceptual model Shropshire, UK, SY1 1SB Howley Park Tel: 01743 355770 Quarry Lane, Dewsbury Project: Newington Quarry Date: Feb-2015 Fax: 01743 357771 West Yorkshire, WF12 7JJ Drawing: 1038/HIA/17 Scale: n/a

P:\Projects\Newington\Newington 14\Reports\HIA Report\Drawings\Drawing 1038_HIA_17 Conceptual model

Hanson UK Newington Quarry, Nottinghamshire: Hydrological and hydrogeological impact assessment Final

APPENDIX 1038/HIA/A1

Assessment methodology

February 2015

P:\Projects\Newington\Newington 14\Reports\HIA Report\Final\1038_HIA Final 1.0.doc

Hanson UK Newington Quarry, Nottinghamshire Final

Method of assessment

The method of assessment of hydrological and aquatic effects has involved:

Characterisation of the baseline environment
Determination of the sensitivity of key catchments and watercourses
Evaluation of the significance of predicted effects taking account of the magnitude of effects (before and after mitigation)
Evaluation of the sensitivity of the baseline environment affected

A rigorous and consistent approach to the assessment has been adopted using matrices to help classify sensitivity of the resource, and determine the scale and significance of effects.

Baseline sensitivity

The characterisation of the baseline water environment has involved the review of data and identification of sensitivities. The characterisation of catchment sensitivities has been guided by the matrix presented in Table 1038/HIA/A1.1 which lists indicative criteria.

The criteria for sensitivity are based approximately on hierarchy of factors relating to the quality of the aquatic environment. The criteria have been used to guide the analysis of the sensitivity of the baseline hydrological, hydrogeological and water quality environment.

Sensitivity Sensitivity criteria category Adjacent to Application Area Downstream/in catchment High sensitivity SSSI or Aquatic Natura 2000 Aquatic Natura 2000 site or site SSSI immediately Wetland/watercourse habitat of downstream/ adjacent to site particular ecological importance Highly vulnerable groundwater Significant peat deposits on sloping ground Medium Wetland watercourse habitat of Aquatic Natura 2000 site or sensitivity particular ecological importance SSSI further downstream of Moderately vulnerable the catchment. groundwater Sensitive locally designated Significant peat deposits site of ecological interest Low sensitivity Low vulnerability groundwater Superficial peat deposits Not sensitive No aquatic habitats or watercourses present No significant groundwater present Table 1038/HIA/A1.1: Catchment sensitivity classification

A1.1 February 2015

P:\Projects\Newington\Newington 14\Reports\HIA Report\Appendices\Appendix 1038_HIA_A1.docx

Hanson UK Newington Quarry, Nottinghamshire Final

Impact prediction and evaluation

The prediction and assessment of effects on hydrology, hydrogeology and other aquatic resources has been undertaken using a series of tables to document the various potential impacts from aspects of the proposed project. Impacts have been predicted for the proposed development based on the guideline criteria for impact magnitudes set out in Table 1038/HIA/A1.2.

Impact Guideline criteria magnitude High Total loss of, or alteration to, key features of the baseline resource such that post-development characteristics or quality would be fundamentally and irreversibly changed, eg watercourse realignment Medium Total loss of, or alteration to, key features of the baseline resource such that post-development characteristics or quality would be partially changed, eg in- stream permanent bridge works Low Small changes to the baseline resource which are detectable but the underlying characteristics or quality of the baseline situation would be similar to pre-development conditions, eg culverting of very small watercourses Negligible A very slight change from baseline conditions, which is barely distinguishable and approximates to the ‘no change’ situation, eg short-term compaction from plant movements Table 1038/HIA/A1.2: Impact magnitude

Using these criteria a series of generic impacts have been predicted for the proposed development. Residual effects have been predicted taking into account site-specific mitigation.

The significance of the predicted effects has been assessed in relation to the sensitivities of the baseline resource. A matrix of significance was developed to provide a consistent framework for evaluation and is presented in Table 1038/HIA/A1.3. Guideline criteria for the various categories of effect are included in Table 1038/HIA/A1.4 .

Magnitude Sensitivity High Medium Low Negligible High Major Major Moderate Minor Medium Major Moderate Minor Minor Low Moderate Minor Minor None Negligible Minor Minor None None Table 1038/HIA/A1.3: Significance matrix

Significance Definition Guideline criteria None No detectable change to No effects on drainage patterns, the environment surface and groundwater quality or aquatic habitat

A1.2 February 2015

P:\Projects\Newington\Newington 14\Reports\HIA Report\Appendices\Appendix 1038_HIA_A1.docx

Hanson UK Newington Quarry, Nottinghamshire Final

Significance Definition Guideline criteria Minor A small but detectable Localised changes in drainage patterns change to the environment or groundwater flows, or changes resulting in minor and reversible effects on surface and groundwater quality or aquatic habitats Moderate A larger, but non- Changes in water quality or quantity fundamental change to the affecting part of a catchment or environment groundwaters of moderate vulnerability, or changes resulting in loss of conservation value to aquatic habitats or designated areas Major A fundamental change to Changes in water quality or quantity the environment affecting widespread catchments or groundwater reserves of strategic significance, or changes resulting in substantial loss of conservation value to aquatic habitats and designations Table 1038/HIA/A1.4: Significance of effects categories

In the above classification, fundamental changes are those which are permanent, detrimental and would result in widespread change to the baseline environment.

The matrices used to guide the assessment have been applied with a degree of flexibility since the evaluation of effects would always be subject to particular location-specific characteristics which need to be taken into account. For this reason, the evaluation of impact significance, in particular, would not always correlate exactly with the cells in the relevant matrix where professional judgement and knowledge of local conditions may result in a slightly different interpretation of the impact concerned. Cumulative effects have been taken into account through prediction and evaluation of effects at a catchment-wide level.

A1.3 February 2015

P:\Projects\Newington\Newington 14\Reports\HIA Report\Appendices\Appendix 1038_HIA_A1.docx

Hanson UK Newington Quarry, Nottinghamshire: Hydrological and hydrogeological impact assessment Final

APPENDIX 1038/HIA/A2

SSSI Citations

February 2015

P:\Projects\Newington\Newington 14\Reports\HIA Report\Final\1038_HIA Final 1.0.doc

COUNTY: NOTTINGHAMSHIRE/SOUTH YORKSHIRE SITE NAME: RIVER IDLE WASHLANDS DISTRICT: BASSETLAW/DONCASTER Status: Site of Special Scientific Interest (SSSI) notified under Section 28 of the Wildlife and Countryside Act 1981. Local Planning Authority: BASSETLAW DISTRICT COUNCIL, Doncaster Metropolitan Borough Council National Grid Reference: (Area 1) SK 662 936 (Area 1) 50 (ha.) 123.6 (ac.) (Area 2) SK 685 937 (Area 2) 10.6 (ha.) 26.2 (ac.) (Area 3) SK 706 945 (Area 3) 5.1 (ha.) 12.7 (ac.) (Area 4) SK 720 963 (Area 4) 22.8 (ha.) 56.6 (ac.) Total – Notts 51.9 (ha.) 128.4 (ac.) Total – S. Yorks 36.7 (ha.) 90.6 (ac.) Ordnance Survey Sheet 1:50,000: 111, 112 1:10,00: SK 69 SE, SK 79 SW, SK 79 Date Notified (Under 1949 Act): 1972 Date of Last Revision: 1981 Date Notified (Under 1981 Act): 1983 Date of Last Revision: – Other Information: The site boundary has been amended. Parts of the site are managed as nature reserves. Reasons for Notification: The site comprises good examples of wet grassland plant communities, and attracts large numbers of wintering and passage waterfowl. Biology The site combines the best remaining washland grasslands along the River Idle floodplain. Characteristically the grassland swards are dominated by marsh foxtail Alopecurus geniculatus in a community which contains such wet meadow herbs as la smock Cardamine pratensis and great burnet Sanguisorba officinalis. In wetter areas the vegetation is dominated by stands of reed sweet-grass Glyceria maxima which has also colonised the internal drains although, locally, a more varied wetland plant community occurs which includes such plant species as meadow rue Thalictrum flavum. There are occasional stands of common reed Phragmites australis notably between an artificial scrape and the River Idle in Area 3.

The washlands are important as feeding and roosting sites for populations of wintering and passage waterfowl including Bewick’s, whooper and mute swans, wigeon, teal, pochard, snipe and a variety of other wildfowl and wading birds. Additional interest is provided by the breeding bird community which includes snipe and redshank. COUNTY: NOTTINGHAMSHIRE SITE NAME: BARROW HILLS SANDPIT DISTRICT: BASSETLAW Status: Site of Special Scientific Interest (SSSI) notified under Section 28 of the Wildlife and Countryside Act 1981 as amended. Local Planning Authority: Bassetlaw District Council National Grid Reference: SK 683917 Area: 1.93 (ha.) 4.77 (ac.) Ordnance Survey Sheet 1:50,000: No 111 1:10,000: SK 96 SE Date Notified (Under 1949 Act): 1981 Date of Last Revision: – Date Notified (Under 1981 Act): 1983 Date of Last Revision: – Other Information: Description: The site comprises a fine example of species-rich grassland and scrub developed on freely-draining unconsolidated sands of glacial origin and is representative of grassland developed on base-rich sandy soils in the North Midlands. Biology: A series of sandy soils of varying base-status has been exposed by old sand workings into the south-facing slope of part of the Barrow Hills. On the upper soils of the quarries, where the leached sandy soils are acidic in character, the ground vegetation is dominated by common bent Agrostis tenuis, bracken Pteridium aquilinum and sheep’s sorrel Rumex acetosella and contains such typical heathland plants as heath bedstraw Galium saxatile. Areas of acid scrub including patches of gorse Ulex europaeus and broom Sarothamnus scoparius also occur. Lower down quarrying has exposed mineral sandy soils containing abundant chips, pebbles and nodules of limestone. Here rabbit grazing maintains areas of herb-rich short sward dominated by silver hair grass Aira caryophyllea and sheep’s fescue Festuca ovina and containing such characteristic sandland plants as common stork’s-bill Erodium cicutarium, buck’s-horn plantain Plantago coronopus, hoary cinquefoil Potentilla argentea, biting stonecrop Sedum acre, common whitlow grass Erophila verna, lesser hawkbit Leontodon taraxacoides, restharrow Ononis repens and viper’s-bugloss Echium vulgare. Parts of the sandpit consist of areas of bare sand, while others have been colonised by scrub which is characterised by the abundance of privet Ligustrum vulgare, rose Rosa spp, hawthorn Crataegus monogyna and ash Fraxinus excelsior together with a few specimens of buckthorn Rhamnus catharticus. The mix of habitats present is ideally suited to support a diverse invertebrate fauna. Hanson UK Newington Quarry, Nottinghamshire: Hydrological and hydrogeological impact assessment Final

APPENDIX 1038/HIA/A3

Dewatering calculations

February 2015

P:\Projects\Newington\Newington 14\Reports\HIA Report\Final\1038_HIA Final 1.0.doc

Hanson UK Hydrogeological Impact Assessment, Newington Quarry Appendix A3

1. Radius of influence calculated using Sichardt equation (CIRIA 515 1)

= L0 C.hs k

Where: Lo = Radius of influence (m) C = Constant, taken as 3000 for radial flow and between 1500 and 2000 for flow to a trench hs = Drawdown in the excavation (H – hw) (m) k = Hydraulic conductivity (m/s)

The following assumptions apply to this equation:

the aquifer is unconfined
the aquifer has infinite areal extent
the aquifer is homogeneous, isotropic and of uniform thickness
flat initial watertable
the aquifer is pumped at a constant discharge rate
the pumping well is fully penetrating, therefore receiving water from the entire saturated thickness of the aquifer
the flow to the well is in a steady state

Radius of influence at boundary of working area

C 1750 (midpoint of range: 1500 – 2000 H Saturated thickness (assuming base of sand and gravel at -4.5 mAOD)

hw 0.5 (assumption) k 18 m/d, from analysis by Leake (2000)

Newington South H = 5.5 m hs = 5 m L0 = 216 m

Newington West H = 5 m hs = 4.5 m L0 = 195 m

Note : In Newington West, the saturated thickness in the north of the proposed working area is 4.2 m and the drawdown 3.75. However, the larger values for the south have been used as a conservative estimate.

1 CIRIA, Publication 515. Groundwater control – Design and practice A3.1 February 2015

Appendix 1038_HIA_A3 dewatering calcs v2 Hanson UK Hydrogeological Impact Assessment, Newington Quarry Appendix A3

2. Groundwater inflow rates estimated using Dupuit-Forcheimer equation

= π [( 2 − 2 ) ( )] Q k ho hw ln/ ro / rw

Where Q = groundwater ingress rate (m 3/d) k = hydraulic conductivity ho = maximum saturated aquifer thickness hw = saturated thickness after drawdown + h s hs = seepage face in working rw = radius of working area re = rw + radius of influence(r o) (m)

The following assumptions apply to this equation:

the aquifer is unconfined
the aquifer has infinite areal extent
the aquifer is homogeneous, and of uniform thickness
there is only a small watertable gradient
groundwater flow is horizontal

Groundwater inflow estimates

The following additional assumptions have been made:

• Hydraulic conductivity is uniform across the site and differences due to restoration in Newington North have been ignored.

• The whole of the working area is open.

Newington South k = 18 m/d (from analysis by Leake (2000)) ho = 5.5 m (Site data) hw = saturated thickness after drawdown + h s hs = 0.5 m (assumed) rw = 267 m (Calculated from measured area of 22.44 ha)

re = rw + radius of influence(r o) (m) (ro = 216 m, from section 1)

Q = 2,857.3 m 3/d, or 33.1 l/s

Newington West k = 18 m/d (from analysis by Leake (2000)) ho = 5 m (Site data) hw = saturated thickness after drawdown + h s hs = 0.5 m (assumed) rw = 152 m (Calculated from measured area of 22.44 ha)

re = rw + radius of influence(r o) (m) (ro = 195 m, from section 1)

Q = 1,969 m 3/d, or 19.6 l/s

A3.2 February 2015

Appendix 1038_HIA_A3 dewatering calcs v2 Hanson UK Newington Quarry, Nottinghamshire: Hydrological and hydrogeological impact assessment Final

APPENDIX 1038/HIA/A4

Water Framework Directive Waterbody status

February 2015

P:\Projects\Newington\Newington 14\Reports\HIA Report\Final\1038_HIA Final 1.0.doc

RBD: 4

Waterbody Category and Map Code.: Groundwater - G31 Waterbody ID and Name: GB40401G301500 Idle Torne - PT Sandstone Nottinghamshire&Doncaster Current Overall Status Poor Status Objective (Overall): Good by 2027 Status Objective(s): Good Quantitative Status by 2027, Good Chemical Status by 2027 Justification if overall objective is Disproportionately expensive, Technically infeasible not good status by 2015: Protected Area Designation: Drinking Water Protected Area, Nitrates Directive

Groundwater body has an upward trend in pollutant concentrations: Yes

Quantitative Status Current Status (and confidence in Poor (High) this assessment)

Quantitative elements

Element Current status (and Predicted Status by Justification for not achieving confidence) 2015 good status by 2015

Impact on Wetlands Good (Low) Good Impact On Surface Waters Poor (High) Poor Disproportionately expensive (GQ5b) Saline Intrusion Good (Low) Good Water Balance Poor (High) Poor Disproportionately expensive (GQ5a) Chemical Status Current Status (and confidence Poor (High) in this assessment)

Chemical elements

Element Current status (and Predicted Status by Justification for not achieving confidence) 2015 good status by 2015

Drinking Water Protected Poor (High) Poor Disproportionately expensive Area (GC4a) General Chemical Test Poor (Low) Poor Disproportionately expensive (GC4a) Impact on Wetlands Good (Low) Good Impact On Surface Waters Poor (Low) Poor Technically infeasible (GC1a) Saline Intrusion Good (Low) Good

Environment Agency, Annex B Humber River Basin District, December 2009 1724 RBD: 4 Pressures and Risks

Pressures Risk Category Element against which assessed Hazardous Substances and other pollutants Urbanisation General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test Nutrients Nitrate General Chemical Test, GWDTE Test, DrWPA Test Nutrients Phosphate General Chemical Test, GWDTE Test, GW- SW Test Hazardous Substances and other pollutants Pesticides General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test Hazardous Substances and other pollutants Chlorinated Solvents General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test Nutrients Trends in Nitrate GWDTE Test, DrWPA Test

Nutrients,Hazardous Substances and other GWDTE (chemical) GWDTE Test pollutants Hazardous Substances and other pollutants, DrWPA DrWPA Test Nutrients, Abstraction and other artificial flow pressures

Environment Agency, Annex B Humber River Basin District, December 2009 1725 Catchment: Idle and Torne RBD: 4

Waterbody Category and Map Code.: River - R33 Surveillance site: Yes Waterbody ID and Name: GB104028058110 River Idle from River Ryton to River Trent National Grid Reference: SK 69183 94760 Current Overall Potential Poor Status Objective (Overall): Good by 2027 (For Protected Area Objectives see Annex D) Status Objective(s): Good Ecological Potential by 2027, Good Chemical Status by 2027 Justification if overall objective is Disproportionately expensive, Technically infeasible not good status by 2015: Protected Area Designation: Freshwater Fish Directive, Nitrates Directive, Urban Waste Water Treatment Directive

SSSI (Non-N2K) related: No Hydromorphological Designation: Artificial Reason for Designation: Land Drainage

Downstream Waterbody ID: GB530402609200

Ecological Potential Current Status (and certainty Poor (Very Certain - WoE) that status is less than good) Biological elements

Element Current status (and Predicted Status by Justification for not achieving certainty of less than 2015 good status by 2015 good) Fish Poor (Very Certain) Poor Disproportionately expensive (HR2a) Invertebrates Good Good Macrophytes Poor (Very Certain) Poor Disproportionately expensive (HR2a) Phytobenthos Poor (Very Certain) Poor Technically infeasible (P2b)

Supporting elements

Element Current status (and Predicted Status by Justification for not achieving certainty of less than 2015 good status by 2015 good) Ammonia (Phys-Chem) High High Dissolved Oxygen High High pH High High Phosphate Poor (Very Certain) Poor Technically infeasible (P2b) Temperature High High Arsenic High High Copper High High Iron High High Zinc High High Ammonia (Annex 8) High High

Supporting conditions

Element Current status (and Predicted Status by Justification for not achieving certainty of less than 2015 good status by 2015 good) Quantity and Dynamics of Does not Support Good Does not Support Disproportionately expensive Flow (Uncertain) Good (HR2a)

Environment Agency, Annex B Humber River Basin District, December 2009 980 Catchment: Idle and Torne RBD: 4

Ecological Potential Assessment

Element Current status Predicted Status by Justification for not achieving 2015 good status by 2015 Mitigation Measures Moderate Moderate Technically infeasible (M3c) Assessment Mitigation Measures that have defined Ecological Potential

Mitigation Measure Status Appropriate techniques to align and attenuate flow to limit detrimental effects of these features In Place (drainage) Sediment management strategies (develop and revise) In Place Appropriate timing (vegetation control) In Place Appropriate vegetation control technique In Place Selective vegetation control regime In Place Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and In Place riparian zone Increase in-channel morphological diversity In Place Operational and structural changes to locks, sluices, weirs, beach control, etc Not In Place Structures or other mechanisms in place and managed to enable fish to access waters upstream Not In Place and downstream of the impounding works. Chemical Status Current Status (and certainty Fail (Quite Certain) that status is less than good)

Environment Agency, Annex B Humber River Basin District, December 2009 981