Nnnn Report Title

Stoneleigh Park, Warwickshire Flood Risk & Drainage Assessment

Version 1.1 FINAL

May 2014

Kingswood House 80 Richardshaw Lane Pudsey Leeds West Yorkshire LS28 6BN

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

DOCUMENT CONTROL

SIGNATURE SHEET

Report Title Stoneleigh Park, Warwickshire FRA

Client ECUS Ltd.

Date 9th May 2014

Produced by Emily Drake BSc

Checked by Steven McAleer MEng MSc MCIWEM C.WEM CEnv

Authorised by John Jepps BA MSc

FORMAL REVISION HISTORY

Version Date Release Status

V0.1 04/02/14 Draft for internal review

V0.2 06/02/14 Draft for client review

V1.0 09/05/14 Final issue

V1.1 09/05/14 Finall issue, update application area

Formatted for Single / Double Sided Printing

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

CONTENTS

Page Signature Sheet & Revision History i Contents ii List of Tables, Figures & Appendices iii

1 INTRODUCTION ...... 1

2 SITE DESCRIPTION AND BACKGROUND INFORMATION ...... 2 2.1 SITE DESCRIPTION ...... 2 2.2 DEVELOPMENT PROPOSAL ...... 2 2.3 AVAILABLE DATA ...... 3 2.3.1 Design Drawings ...... 3 2.3.2 Environment Agency Flood Risk Map ...... 3 2.3.3 Strategic Flood Risk Assessment ...... 3 2.3.4 British Geological Survey Infiltration SuDS GeoReport ...... 3

3 FLOOD ZONE ...... 4 3.1 FLOOD ZONE ...... 4 3.2 VULNERABILITY ...... 4 3.3 THE SEQUENTIAL TEST ...... 4

4 FLOOD RISK AND CONSEQUENCES ...... 5 4.1 HISTORICAL FLOODNG ...... 5 4.2 ESTUARY / COASTAL FLOODING ...... 5 4.3 FLUVIAL FLOODING ...... 5 4.4 GROUNDWATER FLOODING ...... 5 4.5 SURFACE WATER FLOODING ...... 5 4.6 FLOODING FROM MAN MADE STRUCTURES ...... 6 4.6.1 Canals ...... 6 4.6.2 Reservoirs ...... 6

5 SURFACE WATER MANAGEMENT ...... 8 5.1 BACKGROUND ...... 8 5.2 SITE AREAS ...... 8 5.3 GREENFIELD RUNOFF RATE ...... 8 5.4 SURFACE WATER RUNOFF AND MITIGATION ...... 9

6 SUMMARY ...... 10 6.1 RECOMMENDATIONS ...... 10

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

LIST OF TABLES

Table 1 Permeable and Impermeable Areas ...... 8 Table 2 Allowable Discharge Rates ...... 8 Table 3 Storage at the site to mitigate against an increase in runoff volume ...... 9

LIST OF FIGURES

Figure 1 Site Location ...... 2 Figure 2 EA Flood Zone Map ...... 4 Figure 3 Environment Agency Surface Water Flood Map ...... 6 Figure 4 EA Risk of Flooding from Reservoirs Map ...... 7

LIST OF APPENDICES

Appendix A Topographic Survey Appendix B Site Layout Proposals Appendix C Environment Agency Data Appendix D BGS Infiltration SuDS GeoReport

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

1 INTRODUCTION

Thomas Mackay Ltd has been instructed to provide a Flood Risk Assessment (FRA) for a proposed development near the village of Stoneleigh, Warwickshire. The development is for an Anaerobic Digestion Plant and associated infrastructure on land to the west of, and adjacent to Kings Wood, south of Stoneleigh Lane, Stoneleigh, Warwickshire. The land is currently greenfield, with the exception of an existing storage tank located in King’s Wood.

A gas pipeline is also proposed to convey generated biogas to connect with the national gas grid near Crewe Farm to the south west of the ADP, or to the connection point to the north of the junction with the A46 with an electricity transmission line and ducting for heat transfer from the ADP to Stoneleigh Park to the south.

The Environment Agency’s Flood Risk Map indicates that the site is within Flood Zone 1 (low probability of flooding from coastal and fluvial sources). However, as the development is over 1ha in size, an FRA is required in accordance with the National Planning Policy Framework. Consequently the FRA will focus on flood risk from surface water runoff and ensuring flood risk does not increase elsewhere as a result of the development.

This assessment has been undertaken with reference to the National Planning Policy Framework1 (NPPF) and the Environment Agency Flood Risk Standing Advice v3.12. In brief this includes:

 Location plan  Plans of the site including the existing site and the development proposals  Site levels  Proposals for surface water management  An indication of surface water runoff rates  An allowance for climate change  Any other potential sources of flooding at the site

This FRA aims to inform the client about the likely risk to the site and provide stakeholders with a description that flooding may have on the proposed development.

1 CLG (2012) National Planning Policy Framework 2 EA ( © Thomas Mackay Ltd 1 13078_FRA_FINAL_V1-1_(Forissue).Docx May 2014

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

2 SITE DESCRIPTION AND BACKGROUND INFORMATION

2.1 SITE DESCRIPTION The site is located to the West of Stoneleigh, Warwickshire and is currently used for agriculture. The National Grid Reference for the site entrance is SP 32246 73254. A map of the location can be seen in Figure 1 below.

Figure 1 Site Location

The site is located in a rural area surrounded by agricultural fields to the south and east. The A46 is located on the north western boundary of the site, with the unclassified Stoneleigh Road to the North. The nearest dwelling to the site is Kingswood Farmhouse on the opposite side of the A46 road; Stoneleigh village is situated approximately 1km to the east of the site. Access to the site is via Stoneleigh Road on the northern boundary. The site is predominantly greenfield agricultural land, with the exception of an existing storage tank located in King’s Wood. .

The site ranges between 76 and 78mAOD in elevation. The land is gently sloping towards the A46 and a detailed topographic survey can be seen in Appendix A. 2.2 DEVELOPMENT PROPOSAL The proposal is to develop an Anaerobic Digestion Plant (ADP), and associated infrastructure on land to the west of, and adjacent to Kings Wood, south of Stoneleigh Lane, Stoneleigh, Warwickshire. Drawings in Appendix B show the location and boundary of the application site. In addition a gas pipeline is proposed to convey generated biogas to connect with the national gas grid near Crewe Farm to the south west of the ADP, or to the connection point to the north of the junction with the A46 and and an electricity transmission line and ducting for heat transfer from the ADP to Stoneleigh Park to the south.

The application site for the proposed ADP is located in a rural setting and lies approximately 0.6 km to the north-west of Stoneleigh Village and approximately 0.8 km to the north of Stoneleigh Park in Warwickshire. The site extends to approximately 3.9 hectares (ha) lying at an elevation of between 76.5 and 78.5 m above Ordnance Datum (AOD) with the land sloping gently to the south-west. Agricultural fields lie to the north, © Thomas Mackay Ltd 2 13078_FRA_FINAL_V1-1_(Forissue).Docx May 2014

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

west and south of the application site, and road access to the proposed development would be taken from Stoneleigh Road approximately 0.1 km to the north which provides wider access to the A46 Kenilworth Bypass located approximately 0.35 km to the west. 2.3 AVAILABLE DATA

2.3.1 Topographic Survey A topographic survey has been produced for this study by On Centre Surveys Ltd in April 2013 and is presented in Appendix A. 2.3.2 Design Drawings Design Drawings showing the development proposals are presented in Appendix B of this report. 2.3.3 Environment Agency Flood Risk Map The Environment Agency’s Flood Risk Map has been used to determine the flood risk at the site from coastal, fluvial and reservoir sources. 2.3.4 Strategic Flood Risk Assessment The Strategic Flood Risk Assessment for Warwickshire has been obtained from the Warwick District Council website. This includes a detailed study of flood risk across the council from all known sources of flooding. 2.3.5 British Geological Survey Infiltration SuDS GeoReport An Infiltration SuDs GeoReport has been obtained from the British Geological Survey to inform a preliminary assessment of the suitability of infiltration drainage systems at the site.

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

3 FLOOD ZONE

3.1 FLOOD ZONE Figure 2 shows an extract from the Environment Agency’s Flood map for the Stoneleigh area of Warwickshire. This shows that the proposed development site is entirely within Flood Zone 1. Table 1 of the NPPF Technical Guidance describes Flood Zone 1 as areas with a low probability of flooding (less than 0.1% risk in any year from fluvial sources). This figure shows the flood extents associated with the Finham Brook to the north west, the River Sowe to the east, and the River Avon to the south. The Finham Brook has its confluence with the River Sowe just to the north of the map extract. Figure 2 EA Flood Zone Map

3.2 VULNERABILITY Table 2 of the Technical Guidance to the NPPF3 states that anaerobic digestion plants are a less vulnerable development type and is considered to be a suitable land use within Flood Zone 1. 3.3 THE SEQUENTIAL TEST The Sequential Test is a key aspect of the hierarchical approach to Flood Risk Assessments and avoiding and managing flood risk. As the site lies within Flood Zone 1 the development passes the Sequential Test in accordance with the NPPF. The Exception Test is not applicable to developments within Flood Zone 1.

3 CLG (2012) Technical Guidance to the National Planning Policy Framework © Thomas Mackay Ltd 4 13078_FRA_FINAL_V1-1_(Forissue).Docx May 2014

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

4 FLOOD RISK AND CONSEQUENCES

4.1 HISTORICAL FLOODNG The SFRA for Warwick District Council4 provides information on historical flood events which have had an impact on the site. The Upper Avon which runs through Stoneleigh is shown to have flooded during an event in February 1979, however the flood extent shows that this flood did not impact the study site. 4.2 ESTUARY / COASTAL FLOODING The site is approximately 100km from the nearest coastline and is around 77 mAOD. Consequently there is no significant risk to the site form coastal flooding. 4.3 FLUVIAL FLOODING The closest watercourse to the site is Finham Brook which is located over 700 m to the north west from the proposed development at its closest point. The Rivers Sowe and Avon are located to the east and south of the site and are over 800 m away at its closest point. The EA Flood Risk Map (Figure 2) indicates that the site is not at risk of fluvial flooding from any of these watercourses.

Environment Agency modelled flood levels have also been obtained for the River Avon at the location of an existing pipe bridge that will be used for the gas connection. These levels are presented in Appendix C with node 5444 being the closest node immediately downstream of the site. Environment Agency modelled flood levels at this location predict the 1 in 1000 year return period event to be 56.3 mAOD, with the equivalent flood level of 56.44mAOD for the closest node (5443) upstream of the site. The pipeline crossing is therefore unlikely to affect or be affected by or contribute to flooding in the River Avon. 4.4 GROUNDWATER FLOODING The site is located on solid geology of sandstone & mudstone as part of the Kenilworth sandstone beds. The BGS data shows that there is no significant drift cover at this location.

The SFRA for Warwick District Council states that there have been some known instances of elevated groundwater levels causing basement flooding in the area. However, no additional detail is provided on the exact location of this.

The proposed development will not include any basement elements. Groundwater is not considered to present a signficant risk as the site is located on top of a spur around which the Finham Brook and River Sowe flows. This means that any groundwater will drain away from the site. 4.5 SURFACE WATER FLOODING The SFRA for Warwick District Council states that there have been some issues with surface water runoff within the Kenilworth area. Anecdotal information from local residents indicates that this was due to ponding and standing water, rather than major flooding events. Kenilworth is remote from the site and therefore this is unlikely to affect the proposed development.

4 Warwick District Council(2013) Level 1 Strategic Flood Risk Assessment: Volume 1. © Thomas Mackay Ltd 5 13078_FRA_FINAL_V1-1_(Forissue).Docx May 2014

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

The Environment Agency Surface Water Flood map (Figure 3) indicates that minor ponding of surface water is predicted on the site in its existing state. The proposed development will include the provision of a surface water drainage system which will mitigate this flood risk through the use of positive drainage and attenuation systems. This is discussed further in Section 5 of this report. Figure 3 Environment Agency Surface Water Flood Map

4.6 FLOODING FROM MAN MADE STRUCTURES

4.6.1 Canals The nearest canal to the development site is the Grand Union Canal which at its closest is over 9 km away. Flooding from canals is therefore considered to pose no significant risk to the site. The SFRA indicates that there have been no historical events of canal flooding which have impacted the site, or its surrounding area. 4.6.2 Reservoirs The SFRA for Warwick District Council shows that due to the high maintenance and regular inspections, the risk of flooding from reservoirs is considered to be low within the district. The Environment Agency has produced flood risk maps for reservoir flooding based on a worst case scenario and an excerpt for the development site can be seen below in Figure 4. The map shows that even at its maximum extent the risk of flooding from reservoirs does not impact the site.

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

Figure 4 EA Risk of Flooding from Reservoirs Map

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

5 SURFACE WATER MANAGEMENT

5.1 BACKGROUND New development can lead to an increase in impermeable areas and a resultant increase in surface water runoff. The Environment Agency Standing Advice for Flood Risk states that an FRA should consider existing runoff rates and how these will change as a result of the development, along with options to mitigate flood risk at the site and elsewhere. 5.2 SITE AREAS Impermeable areas for the pre- and post- development scenarios have been calculated using plans for the existing and proposed site layouts (Appendix B). A summary of permeable and impermeable areas for pre and post development areas is provided in Table 1 below:

Table 1 Permeable and Impermeable Areas Surface Pre-development area (ha) Post-development area (ha) Total Permeable area 4.8 3.2 Total Impermeable area 0.1 1.7 Total Site Area 4.9 3.9

Existing impermeable areas on the site consist of an area of concrete hard standing near to Stoneleigh Road and a water tank within Kings Wood. 5.3 GREENFIELD RUNOFF RATE

The Greenfield runoff rate has been calculated using IH124 method which derives QBAR using the equation below based on local soil and rainfall information:

The Greenfield QBAR rate derived from this equation giving an allowable discharge post development of 4.91 l/s/ha (QBAR of 9.35 l/s).

In accordance with the guidelines in ‘Rainfall runoff management for developments’5 regional growth curve factors from FSSR 2 and 14 have been used to calculate the greenfield peak flow rates for 1, 30 and 100 year return periods. These are summarised in Table 2 below.

Table 2 Allowable Discharge Rates Return Period Allowable Discharge (l/s) 1 year 7.9 QBAR 9.4 30 year 18.1 100 year 24.0 100 +CC 24.0

5 DEFRA/EA Report SC030219 Rainfall runoff management for developments (October 2013) © Thomas Mackay Ltd 8 13078_FRA_FINAL_V1-1_(Forissue).Docx May 2014

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

5.4 SURFACE WATER RUNOFF AND MITIGATION Surface water runoff from the new development will be collected and discharged by a positive drainage system. The Building Regulations Approved Document H states that surface water drainage systems should discharge to one of the following, listed in order or priority:  An adequate soakaway or some other adequate infiltration system;  A watercourse;  A sewer.

An ‘Infiltration SuDS GeoReport’ has been obtained from the British Geological Survey to ascertain the likely feasibility of utilising an infiltration drainage system at the site. This report can be seen in Appendix D. The report indicates that the use of infiltration is likely to be constrained by a number of factors, including ground instability issues, vulnerability to contamination, and poorly draining geology. This is supported by the presence of existing ponds on site.

It is therefore proposed that the site drainage will be discharged to a watercourse. This may be directly to the River Avon, or into the existing ditch south of the site, which subsequently discharges to the River Avon. Pipework to facilitate this discharge will follow the same route as the gas pipeline between the development and Stoneleigh Park. Full approvals from EA and local authority for discharge and associated infrastructure (e.g. headwall) will be obtained at the detailed design stage.

To ensure that there is no increase in flood risk elsewhere, surface water will be attenuated on site and discharged at a rate no greater than existing, for all events up to the 1 in 100 year return period, including an allowance for climate change. The development proposals have demonstrate that an area to the south of the site has been reserved for use as a SuDS attenuation pond.

A preliminary estimate of the storage volume required to provide adequate attenuation has been made and are presented in Table 3. The volume requirements of the storage have been calculated using a simple routing model; the inflows have been derived using the FEH rainfall profile for the 6 hour storm with the outflow constrained to the Greenfield runoff rate. These will be refined at the detailed design stage of the development.

The indicative area for the SuDS attenuation pond is approximately 1000 m2. Based on this surface area the depth of storage required is summarised in Table 3. This demonstrates that there is sufficient capacity on site to provide the required magnitude of surface water attenuation. Table 3 Storage at the site to mitigate against an increase in runoff volume Return Period Storage Volume (m3) Approximate Depth (mm) 1 year 1.2 1.2 QBAR 11.9 11.9 30 year 40.4 40.4 100 year 70.8 70.8 100 +CC 144.0 144.0

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

6 SUMMARY Thomas Mackay Ltd has been instructed to complete a Flood Risk Assessment for a proposed Anaerobic Digestion Plant at Stoneleigh Park, Warwickshire and associated gas connection. The site is currently greenfield and extends over an area of approximately 3.9 ha.

The Environment Agency Flood Map shows the site to be within Flood Zone 1. The proposed development is classified as ‘Less Vulnerable’ land use and is a suitable development within Flood Zone 1.

The report has assessed the flood risk from a range of sources, including tidal, fluvial, groundwater, surface water and manmade structures. No significant flood risks to the development have been identified.

The gas connection to Stoneleigh Park will cross the main River Avon by way of an existing pipe bridge. This crossing is set above the 1 in 1000 year flood level and will not significantly impact on flood risk off site.

The development will increase the surface water runoff due to the creation of impermeable areas. A desk study shows that infiltration drainage is unlikely to be suitable at the site, therefore it is proposed that surface water will be discharged to a watercourse at a rate no greater than existing. A preliminary analysis of attenuation storage indicates that there is sufficient space within the development to accommodate the required volume. 6.1 RECOMMENDATIONS

This flood risk assessment recommends the following measures to minimise the risk of flooding:

 A detailed site drainage plan should be agreed with the local authority before development commences. Infiltration drainage should not be implemented unless a detailed geotechnical investigation indicates that it is suitable.  Runoff from the site post development should be restricted to existing greenfield runoff rates.

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

APPENDIX A TOPOGRAPHIC SURVEY

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

APPENDIX B SITE LAYOUT PROPOSALS

Ensure a minimum width 10m for structural planting on this side

PLANT LEGEND

1 - Primary Digester

2 - Post Digester

3 - Storage Tank

4 - Technical Building

2m wide grass margin 5 - Gas Flare

6 - Solid Digestate Removal Area

7 - Feedhopper

8 - Silos

9 - Liquid Digestate Removal Station

10 - Silage Clamp (80m x 20m)

11 - Back Up Generator

12 - Reception Building

13 - Transformer

14 - Concrete Apron 10 15 - Condensate Pit

16 - Weighbridge

10 17 - Existing Storage Tank

18 - ROV Compound

19 - Elster Gas Injection 10 20 - E-Box

21 - Propane Tank Base

22 - Bio Filters 320m (800m)

23 - Site Oce

24 - Gas to Grid Processing Unit

25 - CHP 9 26 - Attenuation Lagoon SURFACING KEY 6 - Ashpalt 14 3 - Dot Type 1 16 - Concrete

23 - Gravel Footpath

- Structural Landscape Planting Native Scrub + Tree Belt 1

SERVICES KEY

- Proposed Gas Connection

- Proposed Electricity Connection

KEY

9 - Proposed Electricity & Heat Connection 13 - Proposed Gas Pipeline Route 2 11 FOR PLANNING Kings Wood L 09-05-14 OAJ Amended to Suit Comments K 07-05-14 OAJ Amended to Suit Comments J 06-05-14 OAJ Amended to Suit Comments H 01-05-14 OAJ Amended Following Comments 12 G 04-02-14 OAJ Amended Following Comments 24 F 04-02-14 OAJ Entrance Arrangement Amended E 31-01-14 OAJ Amended Following Technology Provider Input D 29-01-14 OAJ Layout Amended C 16-01-14 RPS Legend Amended B 15-01-14 RPS Legend Added A 14-01-14 JRR Issued For Planning Discussion 0 01-05-13 RPS First Issue Access to existing storage tank Rev Date Chkd Description to follow existing cleared route

21 Connaught Road Attleborough Norfolk NR17 2BW Telephone: (01953) 452001 Fax: (01953) 456955 E-mail: [email protected] www.plandescil.co.uk

22 Storage Client Tank Project 17 2m wide grass margin Stoneleigh AD Plant 26 Stoneleigh Road Warwickshire

Drawing Title Figure1.3 Proposed Site Layout - ADP

Scale U.N.O. Date Drawn By 1:1000 (A3) May 2014 RPS This drawing and the works depicted thereon are the copyright of Plandescil Drawing No. Rev Consulting Engineers Ltd. Unauthorised reproduction infringes copyright. 18156/002 L ECUS Ltd FRA – Stoneleigh Park, Warwickshire

APPENDIX C ENVIRONMENT AGENCY DATA

Historic flood map for Stoneleigh Park, Warwickshire Created 27 April 2012 2167/YD

Legend Flood event outlines

Main Rivers April 1998 Jan 1985

Approximate ^` centre of site ^`

- Scale 1:10000

© Crown copyright and database rights 2012 Ordnance Survey 100024198 © Environment Agency copyright and / or database rights 2012. All rights reserved. Use subject to the terms and conditions of the copyright statement and disclaimer. Flood map for Stoneleigh Park, Warwickshire Created 27 April 2012 2167/YD

2 4 4 #0 5 #0 5 5 4 4 4 4 3 1

9 3 4 #0 5 5 4 #0 4 5 4 4 4 #0 0 5 4 4 Legend 5 #0 5 #0 Modelled levels node points 4 #0 4 5 6 4 3 Bank Top ePlanning Tool #0 8 5 Main Rivers 4 4 7 Flood Zone 3 #0 Flood Zone 2 5 4 3 7 Approximate ^` centre of site #0 5 4 3 6

^` 1 3 3 3 4 4 5 5 4 3 #0 #0 4 5 5 4 3 #0 2 5 4 3 5 Flood Map Areas (assuming no defences) Flood Zone 3 shows the area that could be affected by flooding: - from the sea with a 1 in 200 (0.5%) or greater chance of happening each year - or from a river with a 1 in 100 (1%) or greater chance of happening each year. #0 Flood Zone 2 shows the extent of an extreme 5 4 6 flood from rivers or the sea with up to a 1 in 4 #0 1000 (0.1% - 1%) chance of occurring each year 5 4 6 5

#0 5 4 6 6 - Scale 1:10000

2167/YD Return periods (years), levels (mAOD) Undefended Defended Co-ordinates, m Node FID Ref. UD_100 UD_1000 D_2 D_5 D_10 D_20 D_50 D_75 D_100 D_100cc D_200 D_1000 X Y 5431 57.01 57.92 56.03 56.37 56.58 56.76 57.00 57.12 57.20 57.48 57.38 58.59 433053 271474 5432 56.92 57.74 56.00 56.32 56.52 56.69 56.91 57.01 57.09 57.34 57.25 58.35 433053 271474 5433 56.53 57.15 55.63 55.97 56.16 56.31 56.50 56.59 56.65 56.85 56.78 57.41 432909 271467 5434 56.60 57.21 55.72 56.05 56.24 56.38 56.57 56.66 56.72 56.92 56.85 57.48 432953 271429 5435 56.90 57.72 55.99 56.31 56.51 56.67 56.88 56.99 57.07 57.32 57.23 58.32 432953 271429 5436 56.40 57.01 55.50 55.85 56.03 56.17 56.36 56.44 56.50 56.70 56.63 57.22 432796 271638

5437 River AvonSFRM2010 56.28 56.87 55.38 55.72 55.91 56.05 56.22 56.30 56.36 56.54 56.48 57.04 432724 271813 5438 56.12 56.68 55.24 55.57 55.74 55.88 56.03 56.11 56.16 56.33 56.27 56.75 432729 271998 5439 55.90 56.41 55.07 55.42 55.60 55.74 55.91 55.99 56.05 56.23 56.16 56.74 432644 272188 5440 55.92 56.43 55.03 55.36 55.52 55.63 55.77 55.83 55.86 55.98 55.94 56.15 432647 272186 5441 55.75 56.28 54.87 55.24 55.43 55.58 55.76 55.84 55.90 56.09 56.02 56.61 432490 272330 5442 55.59 56.11 54.73 55.09 55.28 55.42 55.61 55.69 55.74 55.92 55.86 56.44 432376 272335 5443 55.59 56.11 54.73 55.09 55.28 55.42 55.61 55.69 55.74 55.92 55.86 56.44 432379 272336 5444 55.48 55.98 54.67 55.02 55.19 55.32 55.50 55.58 55.63 55.81 55.74 56.30 432205 272213 5445 55.35 55.83 54.59 54.91 55.08 55.20 55.37 55.45 55.50 55.67 55.60 56.14 432136 272141 5446 55.32 55.79 54.56 54.89 55.06 55.18 55.35 55.42 55.47 55.63 55.57 56.09 431821 272025 5447 55.25 55.71 54.50 54.83 55.00 55.12 55.28 55.35 55.40 55.56 55.50 56.01 431675 271924 5464 53.43 53.94 52.22 52.61 52.84 53.05 53.27 53.37 53.43 53.61 53.57 53.94 431829 271151 5465 53.30 53.85 52.12 52.51 52.73 52.93 53.13 53.23 53.30 53.50 53.45 53.85 432014 271076 5466 53.22 53.76 52.01 52.38 52.62 52.84 53.06 53.17 53.22 53.40 53.36 53.75 432192 270937

Mr Andrew Lake Our Ref: ER/C/ 2167/YD Ecus Ltd

[email protected] Your Ref:

Date: 30 April 2012

Dear Andrew

RE: Request for information under the Freedom of Information Act 2000 (FOIA) / Environmental Information Regulations 2004 (EIR)

Flooding Data, Warwickshire

Thank you for your enquiry which was received on 22 March 2012 and subsequent payment received on 24 April 2012.

Requests for information that is recorded are generally governed by the Freedom of Information Act 2000 (FOIA). The information you have requested is environmental and it is therefore exempted from the provisions of FOIA by FOIA s.39 (1). We have therefore considered your request under the provisions of the Environmental Information Regulations 2004 (EIR).

Flood Map

According to our published Flood Map, which provides a general estimate of the likelihood of flooding across England & Wales, part of the site is shown to be within Flood Zone 3. This refers to land where the indicative annual probability of flooding is 1 in 100 years or less from river sources (i.e. it has a 1% or greater chance of flooding in any given year). Please find enclosed a copy of the Flood Map for the area in the vicinity of the property.

Modelled Levels

The nearest main river is the River Avon. There are modelled levels enclosed for the nearest node points to the site (see the Flood Map).

The Bank Top ePlanning Tool

Local Authorities have the responsibility to consult the Environment Agency on any new development falling within 20 metres of the top of the bank of a Main River. The Bank Top Tool allows the Local Planning Authority to determine if new development falls within these areas and triggers the consultation.

Flood Defences

There are no Environment Agency flood defences affecting this site. You may wish to contact the Local Authority to obtain further information regarding localised flooding from drains, culverts and small watercourses, and regarding existing or planned flood defence measures.

Environment Agency, 9 Wellington Crescent, Fradley Park, Lichfield, Staffs, WS13 8RR Customer services line: 03708 506 506 Email: [email protected] www,environment-agency.gov.uk

Record of Flooding

Examination of our records of Historic Flooding (see explanation below) shows that the general area of the site was flooded in 1985 and 1998. Please note that these records show flooding to the land and do not necessarily indicate that properties within the historic flood extents were flooded internally. It is also possible that the pattern of flooding in this area has changed and that this area would now flood under different circumstances

You may also wish to contact your local authority or internal drainage board, to see if they have other relevant local flood information.

What are our records of Historic Flooding?

Our records of Historic Flooding show the extents of known flooding from rivers, the sea, and groundwater. It cannot show all the flooding that may ever have occurred – we can only show flooding where we have adequate records. So, just because an area of land is shown outside the extents of our recorded flooding does not mean it has never flooded. As more data on historic flooding comes to light, and as flood incidents occur, then we will record this where we have adequate information to do so.

I hope that we have correctly interpreted your request. Please see the Standard Notice for details of permitted use.

If you are not satisfied with our response to your request for information you can contact us to ask for our decision to be reviewed. If you are still not satisfied following this, you can then make an appeal to the Information Commissioner, who is the statutory regulator for Freedom of Information.

The address is: Office of the Information Commissioner, Wycliffe House, Water Lane, Wilmslow, Cheshire SK9 5AF. Tel: 01625 545700. Fax: 01625 524 510. E-mail:[email protected]. Website: http//www.informationcommissioner.gov.uk

Yours sincerely

Yvonne Delaney External Relations Officer

For further information please contact External Relations on 01543 404959 Direct e-mail [email protected]

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You must (where you do any of the above): acknowledge the source of the Information by including the following attribution statement: “Contains Environment Agency information © Environment Agency and database right” ensure that you do not use the Information in a way that suggests any official status or that We endorse you or your use of the Information

ensure that you do not mislead others or misrepresent the Information or its source or use the Information in a way that is detrimental to the environment, including the risk of reduced future enhancement

ensure that your use of the Information does not breach the Data Protection Act 1998 or the Privacy and Electronic Communications (EC Directive) Regulations 2003

These are important conditions and if you fail to comply with them the rights granted to you under this licence, or any similar licence granted by us will end automatically.

No warranty The Information is licensed ‘as is’ and We exclude all representations, warranties, obligations and liabilities in relation to the Information to the maximum extent permitted by law. We are not liable for any errors or omissions in the Information and shall not be liable for any loss, injury or damage of any kind caused by its use. We do not guarantee the continued supply of the Information. Governing Law This licence is governed by the laws of England and Wales. Definitions “Information” means the information that is protected by copyright or by database right (for example, literary and artistic works, content, data and source code) offered for use under the terms of this licence. “Commercial” means: offering a product or service containing the Information, or any adaptation of it, for a charge, or Internal Use for any purpose, or offering a product or service based on the Information for indirect commercial advantage, by an organisation that is primarily engaged in trade, commerce or a profession.

ECUS Ltd FRA – Stoneleigh Park, Warwickshire

APPENDIX D BGS INFILTRATION SUDS GEOREPORT