Millstream Lane, Oldham Flood Risk Assessment

Millstream Lane, Oldham

Flood Risk Assessment

March 2021

Assessment | Modelling | Design

Millstream Lane, Oldham Flood Risk Assessment

Project Information

Project: Millstream Lane, Oldham

Report Title: Flood Risk Assessment

Client: Smith Meehan Ltd

The instruction to undertake this Flood Risk Assessment was received from Mark Instruction: Caine of Appeals & Planning Services acting on behalf of the Client.

File Ref: 13597-FRA-01

Approval Record

Author: Ceire McGough BSc (Hons) AMIEnvSc

Checker: Aled Williams BSc (Hons) MCIWEM

Approver: Victoria Griffin BSc (Hon) MSc MIEnvSc CEnv

Document History

Revision Date Comment

01 12/03/2021 First issue

The copyright in this document (including its electronic form) shall remain vested in Waterco Limited (Waterco) but the Client shall have a licence to copy and use the document for the purpose for which it was provided. Waterco shall not be liable for the use by any person of the document for any purpose other than that for which the same was provided by Waterco. This document shall not be reproduced in whole or in part or relied upon by third parties for any use whatsoever without the express written authority of Waterco.

Millstream Lane, Oldham Flood Risk Assessment

Contents Introduction ...... 1

Existing Conditions ...... 1

Development Proposals ...... 2

Flood Zone Classification & Policy Context ...... 2

Consultation ...... 4

Sources of Flooding and Probability ...... 5

Mitigation ...... 8

Flood Warnings and Evacuation ...... 8

Impact on Flood Risk Elsewhere ...... 9

Sequential Test ...... 9

Conclusions ...... 10

Recommendations ...... 10

Appendices Appendix A Location & Aerial Plan

Appendix B LiDAR Extract

Appendix C UU Sewer Plan

Appendix D Proposed Development Plans

Appendix E EA Flood Maps

Appendix F EA Pre-planning Opinion

Appendix G JFLOW Modelled Mapping

Appendix H PFRA Groundwater Map

Millstream Lane, Oldham Flood Risk Assessment

Introduction Waterco has been commissioned to undertake a Flood Risk Assessment in relation to an industrial development at Millstream Lane, Failsworth, Oldham, Manchester, M35 0PB.

The purpose of this report is to outline the potential flood risk to the site, the impact of the proposed development on flood risk elsewhere, and the proposed measures which could be incorporated to mitigate the identified risk. This report has been prepared in accordance with the guidance contained in the National Planning Policy Framework (NPPF) and the National Planning Practice Guidance (NPPG): Flood Risk and Coastal Change.

Existing Conditions The site covers an area of approximately 2,850m2 and is located at National Grid Reference: 389280, 399641. A location plan and an aerial image are included in Appendix A.

Online mapping (including Google Maps / Google Streetview imagery, accessed March 2021) shows that the site comprises a depot and storage yard occupied by Enviroil. The site is bordered by Banbury Road and industrial units to the north, industrial land and the River Medlock to the east, the River Medlock, rough ground and a railway line to the south and Millstream Lane and industrial land to the west. Access to the site is provided from Millstream Lane.

Local Topography Topographic levels to metres Above Ordnance Datum (m AOD) have been derived from a 1m resolution Environment Agency (EA) composite ‘Light Detecting and Ranging’ (LiDAR) Digital Terrain Model (DTM). A review of LiDAR data shows that the site slopes from approximately 62.56m AOD in the south-east to approximately 61.3m AOD in the west.

A LiDAR extract is included in Appendix B.

Ground Conditions Reference to the British Geological Survey (BGS) online mapping (1:50,000 scale) indicates that the site is underlain by superficial deposits of Devensian Till and Alluvium generally comprising clay, silt, sand and gravel. The superficial deposits are identified as being underlain by the Collyhurst Sandstone Formation.

The geological mapping is available at a scale of 1:50,000 and as such may not be accurate on a site-specific basis.

The EA’s ‘Source Protection Zones’ data, viewed from MAGIC’s online mapping [accessed March 2021], indicates that the site is not located within a Groundwater Source Protection Zone.

The Cranfield University ‘Soilscapes’ map (accessed March 2021) indicates that the site is underlain by ‘slowly permeable seasonally wet loamy and clayey soil’.

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Millstream Lane, Oldham Flood Risk Assessment

Local Drainage Public sewer records have been obtained from United Utilities (UU) and are included in Appendix C. The sewer records show that there is a 375mm public combined sewer located immediately north of the site in Banbury Road. The sewer flows west in Banbury Road and proceeds south in Millstream Lane. A 225mm private surface water sewer is located west of the site and flows south in Millstream Lane.

Development Proposals The proposed development is for a biowaste transfer station. The proposal will include a covered enclosure for food waste to be deposited, stored for limited time then collected to be processed elsewhere. The development also includes a weighbridge, covered loading area and waste liquid storage tank.

The site is allocated for waste processing within Oldham’s Unitary Development Plan. Proposed development plans are included in Appendix D.

Flood Zone Classification & Policy Context The EA ‘Flood Map for Planning’, included in Appendix E, shows that the northern extent of the site, including the site access, is located within an area outside of the extreme flood extent (Flood Zone 1), meaning it has a less than 0.1% (1 in 1000) annual probability of flooding. The southern extent of the site, and location of the proposed development, is located within Flood Zone 3 – an area considered to be at flood risk with a 1% (1 in 100) or greater annual probability of fluvial flooding. Land adjacent to Flood Zone 3 is shown within Flood Zone 2 – an area considered to be at flood risk with between a 1% and 0.1% annual probability of flooding.

In accordance with Table 2 of the NPPG: Flood Risk and Coastal Change, industrial developments are considered to be ‘less vulnerable’. Table 3 of the NPPG: Flood Risk and Coastal Change, states that ‘less vulnerable’ development is considered appropriate within Flood Zones 1, 2 and 3.

This report details the flood risk to the site and the mitigation measures which could be carried out to ensure that the development will be safe for its lifetime.

Local Policy The Oldham Council Local Development Framework (November 2011) contains the following policies relating to flood risk:

Policy 1 – Climate Change and Sustainable Development

When allocating sites and determining planning applications, the council will: g. promote development away from areas at risk of flooding, reduce surface water run-off and the likelihood of downstream flooding, and protect and improve water resources.

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Millstream Lane, Oldham Flood Risk Assessment

Policy 19 - Water and Flooding

Flooding is a natural process that is influenced by rainfall, geology, topography, rivers and streams and man- made interventions such as flood defences. Flooding can cause disruption to communities and it is therefore important to avoid developing in flood risk areas. Recent flood events across the country have reinforced the importance of considering flooding from all sources such as surface water flooding and the importance of permeable solutions in new development.

The council will ensure development does not result in unacceptable flood risk or drainage problems by directing development away from areas at risk of flooding, and protecting and improving existing flood defences, water resources and quality.

…Development proposals must use PPS25 and the Oldham Strategic Flood Risk Assessment (SFRA) to carry out and pass the Sequential Test and, where necessary, the Exception Test and a site-specific flood risk assessment. Consideration must be given to all sources of flooding and the vulnerability of development. In the case of non allocated sites applicants must demonstrate that other reasonably available sites have been considered. An area of search must be agreed with the council. Evidence must be submitted to demonstrate how the tests have been passed.

Information on flood risk is shown on the proposals map, the Environment Agency's website and the council's website.

Site Specific Flood Risk Assessments

In addition to the requirements of PPS25, and as set out in the Oldham SFRA, a site-specific flood risk assessment must be provided for development proposals:

• over 0.5 hectare within a Critical Drainage Area; or

• at risk of flooding from other sources of flooding; or

• situated behind flood defences; or

• within 20m of the bank top of a Main River, where appropriate; or

• involving any culverting operation or development which controls the flow of any river or stream.

Development proposals must:

a. where identified at risk from surface water flooding, adhere to the guidance in PPS25 and any subsequent additions and the recommendations made in the Oldham SFRA until Surface Water Management Plans (SWMP) are completed; and

b. minimise the impact of development on surface water run-off. The allowable discharge rates must be agreed with the council for all developments, which must where possible be achieved through the implementation of sustainable drainage systems (SUDS); and

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Millstream Lane, Oldham Flood Risk Assessment

c. ensure that culverting or channelisation of watercourses are avoided, unless limited access is required over the watercourse. Developments must remove existing culverts and artificial channels and restore the watercourse to a more natural state or open up and enhance existing culverted or channelised watercourses, where appropriate; and

d. retain a green corridor next to watercourses and rehabilitate and enhance watercourse corridors where possible. Where opportunities arise the council will seek to remove existing buildings that encroach to the bank top of watercourses and detract from the river corridor, prevent access and degrade habitat value; and

e. reduce the consumption of water and have high standards of water efficiency in new developments or incorporate water efficient technologies in existing buildings. Developments must conserve water resources and not adversely affect water quality or quantity and associated biodiversity; and

f. ensure potential capacity issues in the water supply and sewerage treatment works are taken into account through liaising with United Utilities until a River Mersey Water Cycle Study is completed.

The Oldham Council Strategic Hybrid Flood Risk Assessment (SFRA) (January 2010) and the Oldham Council Preliminary Flood Risk Assessment (PFRA) (May 2011 and its 2017 addendum) have been reviewed and inform this report.

Consultation A pre-planning opinion request was submitted to the EA in January 2021. In their response, provided as Appendix F, the EA have stated:

Fluvial Flood Risk Development must be safe and should not increase the risk of flooding… If your proposed development is located within flood zone 2 or 3 you should consult the Flood Risk and Coastal Change pages of the National Planning Policy Guidance (NPPG).

If your proposed development is located within flood zone 2 or 3 and its vulnerability and flood zone are considered acceptable under the NPPG then a site specific Flood Risk Assessment (FRA) is required to support any subsequent planning application. This is required by the National Planning Policy Framework (NPPF).

Contaminated Land The NPPF takes a precautionary approach to land contamination. Before the principle of development can be determined, land contamination should be investigated to see whether it could preclude certain development due to environmental risk or cost of remediation.

Where contamination is known or suspected, a desk study, site investigation, remediation and other works may be required to enable safe development. Minimum requirements for submission with a planning application are a preliminary risk assessment, such as a site walkover or desk top study.

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Millstream Lane, Oldham Flood Risk Assessment

Site investigation and remediation strategy reports may be required for submission with a planning application for sensitive land use types or where significant contamination, or uncertainty, is found. When dealing with land affected by contamination, developers should follow the risk management framework provided in the CLR11, Model Procedures for the Management of Land Contamination.

Pollution If the proposed development use has the potential to pollute ground or surface water receptors then an assessment to establish whether the risk of pollution is acceptable or can be satisfactorily mitigated for will be required within any planning application.

Ecology If a Main River is located on or within 8 metres of your proposed development site an ecological survey is required to establish whether development is likely to have a detrimental impact on the biodiversity of the watercourse. We would not support development proposals if there was shown to be a likely detrimental impact on the water environment. In accordance with the NPPF, any development proposal should avoid significant harm to biodiversity and seek to protect and enhance it.

Opportunities to incorporate biodiversity in and around the development will be encouraged.

Your scheme should be designed with a naturalised buffer zone of at least 8 metres from the main river to protect and enhance the conservation value of the watercourse and ensure access for flood defence maintenance.

This buffer zone should be managed for the benefit of biodiversity for example by the planting of locally appropriate, UK native species. The buffer zone should be undisturbed by development with no fencing, footpaths or other structures. This buffer zone will help provide more space for flood waters, provide improved habitat for local biodiversity and allows access for any maintenance requirements.

Sources of Flooding and Probability Fluvial The nearest watercourse is the River Medlock which is located immediately east and south of the site. The River Medlock flows south-west in this location. Other watercourses in the area include an unnamed tributary of the River Medlock which flows south and into two large ponds approximately 55m north-west of the site. A piped outfall connects the ponds to the River Medlock.

Fluvial flooding could occur if the River Medlock overtopped its banks during or following an extreme rainfall event.

The EA ‘Historical Flood Map’ (Appendix E) indicates that there are no records of historical flooding at or near to the site.

As shown by the EA ‘Flood Map for Planning’ (Appendix E) the Flood Zone 2 and 3 extents are limited to the

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Millstream Lane, Oldham Flood Risk Assessment

southern extent of the site. However, as shown on the LiDAR extract (Appendix B), site levels are highest in the southern extent and approximately 1m higher than levels on land in the northern extent of the site which is located in Flood Zone 1.

EA Flood Level Data The EA were consulted to obtain flood level data for the River Medlock in the vicinity of the site. The EA have confirmed that they do not have flood level data (modelled data) in the vicinity of the site. The flood extents shown on the EA ‘Flood Map for Planning’ are therefore derived from the EA generalised national scale modelling approach, known as JFLOW. JFLOW modelling typically provides a conservative estimate of flooding and is limited in its accuracy i.e. does not account for the shape or capacity of the river channel or any flow paths within the floodplain.

The limited accuracy of the JFLOW data is likely the reason why land in the southern extent of the site, which forms a high point on site is within Flood Zone 3, whereby lower lying land in the northern extent is shown in Flood Zone 1 and at very low risk of fluvial flooding. It is likely that the JFLOW data has not accounted for site specific topography and the southern extent of the site forming a local topographical high point.

JFLOW data was obtained from the GOV.UK website. The JFLOW data was used to create flood depth maps for the 1% Annual Exceedance Probability (AEP) and 0.1% AEP flood events. The flood depth mapping is included as Appendix G.

As shown on the ‘Maximum Flood Depth’ maps (Appendix G), according to the JFLOW modelled outputs, flooding is estimated in the south-eastern extent of the site during the 1% AEP, and 0.1% AEP events. The maximum flood depth in the location of the proposed development is 300mm during the 1% AEP event. The maximum flood depth in the location of the proposed development is 225mm during the 0.1% AEP event. However, given the elevation of the southern extent of the site above surrounding land, it is unlikely that the flood depths and extent shown by JFLOW data would be realised.

Land immediately east of the site is shown at flood risk with depths of up to 250mm during the 1% AEP event and 231mm during the 0.1% AEP event. The south-eastern extent of the site is elevated a minimum of 0.4m above land east of the site where flood depths up to 250mm are estimated. As such and based on flood depths less than 250mm on lower lying land east of the site, flood water is unlikely to reach a sufficient height to enter the site.

Land immediately south of the site is shown at flood risk with depths of up to 250mm during the 1% AEP event and 224mm during the 0.1% AEP event. The south-eastern extent of the site is elevated a minimum of 1m above land south of the site where flood depths up to 250mm are estimated. As such and based on flood depths less than 250mm on lower lying land south of the site, flood water is unlikely to reach a sufficient height to enter the site.

Based on a review of JFLOW data and topographical levels, it can be concluded that the risk of fluvial flooding is very low. Land east and south of the site is estimated to flood with depths less than 250mm during both the 1% AEP and 0.1% AEP events. The south-eastern extent of the site, and location of the proposed development, is a minimum of 0.4m above land to the east and south and is elevated above the estimated

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Millstream Lane, Oldham Flood Risk Assessment

flood depths in the adjacent floodplain.

Tidal The site is situated at a minimum of 61.3m AOD and is significantly above sea level. Therefore, there is no risk from tidal flooding.

Surface Water Surface water flooding occurs when rainwater does not drain away through the normal drainage system or soak into the ground. It is usually associated with high intensity rainfall events but can also occur with lower intensity rainfall or melting snow where the ground is saturated, frozen or developed, resulting in overland flow and ponding in depressions in topography. Surface water flooding can occur anywhere without warning. However, flow paths can be determined by consideration of contours and relative levels.

The EA ‘Flood Risk from Surface Water’ map (Appendix E) indicates that the majority of the site, including the location of the proposed development, is at very low risk of surface water flooding, meaning it has a less than 0.1% annual probability of flooding. The north-western extent of the site is identified at low (between a 1% and 0.1% annual probability), medium (between a 3.3% and 1% annual probability) and high (greater than 3.3% annual probability) risk of surface water flooding.

The flood risk identified by the EA mapping is associated with a flood flow route originating from the large pond approximately 55m north-west of the site. The flood flow route encroaches onto the western extent of the site however is generally directed south within Millstream Lane. The flood flow route is unlikely to be realised when the piped overflow from the pond is taken into account.

There are no records of surface water flooding at or near to the site.

It can be concluded that the risk of surface water flooding to the developable area of the site is very low.

Sewer Flooding from sewers can occur when a sewer is overwhelmed by heavy rainfall, becomes blocked, is damaged, or is of inadequate capacity. Flooding is mostly applicable to combined and surface water sewers.

The UU sewer records show that there is a 375mm public combined sewer located immediately north and west of the and a 225mm private surface water sewer located west of the site.

There are no distinct flow routes in the area which would direct any potential flooding arising from the nearby sewers towards the site. Any potential sewer flooding arising in Millstream Lane would be directed south, away from the site, following the local topography.

There are no records of sewer flooding at or near to the site.

It can therefore be concluded that the risk of sewer flooding is low.

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Millstream Lane, Oldham Flood Risk Assessment

Groundwater Groundwater flooding occurs when water levels underneath the ground rise above normal levels. Prolonged heavy rainfall soaks into the ground and can cause the ground to become saturated. This results in rising groundwater levels which leads to flooding above ground.

As described above, the site is underlain by Devensian Till and Alluvium, which is underlain by the Collyhurst Sandstone Formation.

The SFRA states that ‘Oldham is not considered to be at significant risk of groundwater flooding’ and there are no records of groundwater flooding at or near to the site.

The PFRA ‘Areas Susceptible to Groundwater Flooding’ map, provided as Appendix H shows that the site is located within an area with between a 25% and 50% susceptibility of groundwater flooding.

The site is covered by hardstanding which will limit the vertical migration of groundwater.

It can therefore be concluded that the risk of groundwater flooding is low.

Artificial Sources There are no canals within the vicinity of the site. The EA ‘Flood Risk from Reservoirs’ map (Appendix E) shows that the site is not at risk of flooding from reservoirs.

It can therefore be concluded that the risk of flooding from artificial sources is very low.

Summary of Potential Flooding It can be concluded that the risk of flooding from all sources is considered to be low.

Mitigation Whilst the location of the development is identified within Flood Zone 3, the development has been sequentially located in the highest part of the site, thereby minimising the potential flood risk. The positioning of the development in the highest point of the site will ensure that any surface water runoff will flow away from the development and will not flow into the waste storage area. No permanent enclosed buildings are proposed as such no flood risk mitigation measures are considered necessary.

Flood Warnings and Evacuation Flood Warnings and alerts cover this area.

Given the Flood Zone 3 classification and taking a precautionary approach, the site owner should prepare a flood plan to include details of a safe evacuation route to be used during a flood event. Millstream Lane west of the site is shown within Flood Zone 1 and would provide a safe means of access / egress during a flood

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Millstream Lane, Oldham Flood Risk Assessment

event.

Impact on Flood Risk Elsewhere The risk of flooding from all sources is considered to be low. No significant ground modifications are proposed, and the development will not remove flood storage space from the floodplain. As such, the development will not result in an increase in flood risk elsewhere.

Sequential Test The NPPF requires the Local Authority to apply the Sequential Test in consideration of new development. The aim of the Test is to steer new development to areas at the lowest probability of flooding.

The development site is allocated for waste processing within Oldham’s Unitary Development Plan. The development will be sequentially placed within the highest point of the site and an area with the lowest flood risk. As such, the Sequential Test is considered to be passed.

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Millstream Lane, Oldham Flood Risk Assessment

Conclusions The proposed development is for a biowaste transfer station. The proposal will include an enclosure for food waste to be deposited, stored for limited time then collected to be processed elsewhere. The development also includes a weighbridge, covered loading area and waste liquid storage tank.

The Environment Agency ‘Flood Map for Planning’ shows that the northern extent of the site is located within an area outside of the extreme flood extent (Flood Zone 1). The southern extent of the site, and location of the proposed development is shown to be within Flood Zones 2 and 3. The Flood Zone 2 and 3 extents are associated with out of channel flooding from the River Medlock.

No flood level data is available in this area to make a quantitative assessment of flood risk. However, as shown on the LiDAR extract, site levels are highest in the southern extent (Flood Zone 3) and approximately 1m higher than levels on land in the northern extent of the site which is located in Flood Zone 1.

JFLOW modelled outputs have been obtained and show that land east and south of the site is shown at flood risk during the 1% AEP and 0.1% AEP events with depths of up to 250mm. The south-eastern extent of the site and location of the proposed development is elevated a minimum of 0.4m above land to the south and west of the site and is therefore elevated above surrounding flood levels.

It is likely that the higher southern extent of the site is shown within Flood Zone 3 in error given the limited accuracy of the JFLOW modelling techniques which form the Flood Zone extents.

It is considered that the risk of flooding from all sources is very low and no flood risk mitigation measures are required.

In the event of a flood, safe evacuation is available from Millstream Lane which is shown within Flood Zone 1.

Recommendations 1. Submit this Flood Risk Assessment to the Planning Authority in support of the Planning Application.

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Millstream Lane, Oldham Flood Risk Assessment

Appendix A Location & Aerial Plan

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NOTES: 1) ALL DIMENSIONS ARE IN METRES AND ALL LEVELS IN METRES ABOVE ORDNANCE DATUM UNLESS STATED OTHERWISE ± LEGEND Site Boundary Watercourses / Water Bodies

River Medlock

CLIENT:

SMITH MEEHAN LTD

www.waterco.co.uk

SCHEME: MILLSTREAM LANE, OLDHAM

PLOT TITLE:

LOCATION PLAN

PLOT STATUS: DATE: FINAL 22/01/2021

DRAWN: CHECKED: APPROVED: PLOT SCALE @ A3: CM AW VG 1:1,500 (UNLESS STATED OTHERWISE) 0 15 30 60 90 120 150 PLOT NAME: REV: m 13597-Location_Plan -

CONTAINS OS DATA © CROWN COPYRIGHT (2021)

NOTES: 1) ALL DIMENSIONS ARE IN METRES AND ALL LEVELS IN METRES ABOVE ORDNANCE DATUM UNLESS STATED OTHERWISE ± LEGEND Site Boundary

CLIENT:

SMITH MEEHAN LTD

www.waterco.co.uk

SCHEME: MILLSTREAM LANE, OLDHAM

PLOT TITLE:

AERIAL PLAN

PLOT STATUS: DATE: FINAL 22/01/2021

DRAWN: CHECKED: APPROVED: PLOT SCALE @ A3: CM AW VG 1:1,500 (UNLESS STATED OTHERWISE) 0 15 30 60 90 120 150 PLOT NAME: REV: Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User m 13597-Aerial_Plan - Community CONTAINS OS DATA © CROWN COPYRIGHT (2021)

Millstream Lane, Oldham Flood Risk Assessment

Appendix B LiDAR Extract

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NOTES: 61 1) ALL DIMENSIONS ARE IN METRES AND ALL LEVELS IN METRES 71 64 ABOVE ORDNANCE DATUM UNLESS STATED OTHERWISE 66 63 LEGEND ± 66 62 81 64 Site Boundary 83 65

59 74 67 E Site Levels 66 77 Ground Elevation (mAOD)

78 < 55

82 55 - 60 80 66 60 - 65

79 65 - 70 62 75 64 66 > 70 65 76 E E E 72 E E E 63 73 E E

60 E E 58 65 62

60 71 68 65 70 69 66 66 70 69 72 61 73 72 67 63 62

68 71 63 64 61.718 m 61.833 m E 77 E 64 CLIENT: 78 79 61.628 m 62 E SMITH MEEHAN LTD

58 62.168 m 83 82 61.36 m 61.808 m E E E 61.874 m www.waterco.co.uk E 75 SCHEME: MILLSTREAM LANE,

80 61.722 m 62.565 m OLDHAM E E 85

PLOT TITLE: 80 59 LIDAR ELEVATIONS 87 61 62.333 m 60 1m RESOLUTION

76 E 63 PLOT STATUS: DATE: 86 FINAL 22/01/2021

88 81 PLOT SCALE @ A3: 74 1:500 84 59 DRAWN: CHECKED: APPROVED: PLOT SCALE @ A3: CM AW VG 1:1,500 (UNLESS STATED OTHERWISE) 0 15 30 60 90 120 150 0 5 10 20 30 40 50 PLOT NAME: REV:

m m 58 89 13597-LiDAR -

Appendix C UU Sewer Plan

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Millstream Lane, Oldham Flood Risk Assessment

Appendix D Proposed Development Plans

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REV. DESCRIPTION. DATE. ph ARCHITECTURE Tel: 01457 838801 Mobile: 07967 233507 Fax: 01457 838801 email:[email protected] 7 Larkwood Close, Carrbrook, Stalybridge,Cheshire,SK15 3NL.

DEC.20

1:200 PH SITE PLAN ENVIROIL GREEN LAND FAILSWORTH M35 0PB NORTH

ph ARCHITECTURE Tel: 01457 838801 Mobile: 07967 233507 Fax: 01457 838801 email:[email protected] PROPOSED FOOD RECYCLING UNIT 7 Larkwood Close, Carrbrook, GREEN LAND, FAILSWORTH,M35 0PB PROPOSED LOCATION PLAN 1:1250 Stalybridge,Cheshire,SK15 3NL. FRONT ELEVATION SIDE ELEVATION REAR ELEVATION SIDE ELEVATION

REV. DESCRIPTION. DATE. ph ARCHITECTURE Tel: 01457 838801 Mobile: 07967 233507 Fax: 01457 838801 email:[email protected] 7 Larkwood Close, Carrbrook, Stalybridge,Cheshire,SK15 3NL.

DEC.20

1:200 PH SITE PLAN ENVIROIL GREEN LAND FAILSWORTH M35 0PB ELEVATION

ELEVATION *

LOCATION

60 T COVERED BAY WEIGH

WASH

COVERED LOADING LIQUID

SITE PLAN

OPERATION

GREEN LANE FAILSWORTH MANCHESTER M35 0PB PROPOSED FOOD RECYCLING UNIT Millstream Lane, Oldham Flood Risk Assessment

Appendix E EA Flood Maps

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NOTES: 1) ALL DIMENSIONS ARE IN METRES AND ALL LEVELS IN METRES ABOVE ORDNANCE DATUM UNLESS STATED OTHERWISE ± LEGEND Site Boundary EA Main Rivers EA Flood Zone 3 EA Flood Zone 2

CLIENT:

SMITH MEEHAN LTD

www.waterco.co.uk

SCHEME: MILLSTREAM LANE, OLDHAM

PLOT TITLE: EA FLOOD MAP FOR PLANNING DATA ACCESSED JANUARY 2021

PLOT STATUS: DATE: FINAL 22/01/2021

DRAWN: CHECKED: APPROVED: PLOT SCALE @ A3: CM AW VG 1:1,500 (UNLESS STATED OTHERWISE) 0 15 30 60 90 120 150 PLOT NAME: REV: m 13597-EA_FZ -

CONTAINS OS DATA © CROWN COPYRIGHT (2021) © ENVIRONMENT AGENCY COPYRIGHT AND/OR DATABASE RIGHT 2021. ALL RIGHTS RESERVED. SOME FEATURES OF THIS MAP ARE BASED ON DIGITAL SPATIAL DATA FROM THE CENTRE FOR ECOLOGY AND HYDROLOGY, © NERC (CEH). © CROWN COPYRIGHT AND DATABASE RIGHTS 2004 ORDNANCE SURVEY 100024198 NOTES: 1) ALL DIMENSIONS ARE IN METRES AND ALL LEVELS IN METRES ABOVE ORDNANCE DATUM UNLESS STATED OTHERWISE ± LEGEND Site Boundary Historical Flood Map

NO RECORDS OF HISTORICAL FLOODING

CLIENT:

SMITH MEEHAN LTD

www.waterco.co.uk

SCHEME: MILLSTREAM LANE, OLDHAM

PLOT TITLE: EA HISTORICAL FLOOD MAP

PLOT STATUS: DATE: FINAL 22/01/2021

DRAWN: CHECKED: APPROVED: PLOT SCALE @ A3: CM AW VG 1:1,500 (UNLESS STATED OTHERWISE) 0 15 30 60 90 120 150 PLOT NAME: REV: m 13597-EA_HIST -

CONTAINS OS DATA © CROWN COPYRIGHT (2021) EA FLOODING FROM RESERVOIR DATA © CROWN COPYRIGHT (2021) NOTES: 1) ALL DIMENSIONS ARE IN METRES AND ALL LEVELS IN METRES ABOVE ORDNANCE DATUM UNLESS STATED OTHERWISE ± LEGEND Site Boundary Low (between 0.1% and 1.0%) Medium (between 1.0% and 3.3%) High (3.3% or greater)

CLIENT:

SMITH MEEHAN LTD

www.waterco.co.uk

SCHEME: MILLSTREAM LANE, OLDHAM

PLOT TITLE: EA FLOOD RISK FROM

SURFACE WATER DATA ACCESSED JANUARY 2021

PLOT STATUS: DATE: FINAL 22/01/2021

DRAWN: CHECKED: APPROVED: PLOT SCALE @ A3: CM AW VG 1:1,500 (UNLESS STATED OTHERWISE) 0 15 30 60 90 120 150 PLOT NAME: REV: m 13597-EA_SW -

EA Reservoir Flood Map

AREA AT LOW RISK

CLIENT:

SMITH MEEHAN LTD

www.waterco.co.uk

SCHEME: MILLSTREAM LANE, OLDHAM

PLOT TITLE: EA FLOOD RISK

FROM RESERVOIRS DATA ACCESSED JANUARY 2021

PLOT STATUS: DATE: FINAL 22/01/2021

DRAWN: CHECKED: APPROVED: PLOT SCALE @ A3: CM AW VG 1:1,500 (UNLESS STATED OTHERWISE) 0 15 30 60 90 120 150 PLOT NAME: REV: m 13597-EA_RES -

Appendix F EA Pre-planning Opinion

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Ceire McGough Our ref: SO/2021/120906/01-L01 Waterco Ltd Your ref: 210115/GS44 Eden Court Business Centre Lon Parcwr Industrial Estate Date: 04 February 2021 Ruthin Clwyd LL15 1NJ

Dear Ceire McGough

PRE-PLANNING OPINION - MILLSTREAM LANE, FAILSWORTH, OLDHAM, MANCHESTER M35 0PB

Thank you for contacting us to request our preliminary advice with regard to the above proposed site for development.

Fluvial Flood Risk

Development must be safe and should not increase the risk of flooding. You can view a site's flood zone on the Flood Map for Planning on our website: http://apps.environment-agency.gov.uk/wiyby/37837.aspx

If your proposed development is located within flood zone 2 or 3 you should consult the Flood Risk and Coastal Change pages of the National Planning Policy Guidance (NPPG) http://planningguidance.communities.gov.uk/blog/guidance/flood-risk-and- coastalchange/

Here you can determine whether the flood risk vulnerability of your proposed development and the flood zone are compatible. You can also establish if there are flood risk sequential test and exception test requirements for your proposed development.

Environment Agency Richard Fairclough House Knutsford Road, Warrington, WA4 1HT. Customer services line: 03708 506 506 www.gov.uk/environment-agency Cont/d..

Guidance on the content of a site specific FRA can be found on the NPPG and the .gov website: https://www.gov.uk/guidance/flood-risk-assessment-for-planning- applications

The majority of our data is now open sourced and can be located at; https://data.gov.uk/publisher/environment-agency

However, if you need more detailed flood risk modelling data to help you produce a FRA then please contact our Customers and Engagement team at Greater Manchester Merseyside and Cheshire - [email protected]

Contaminated Land

The NPPF takes a precautionary approach to land contamination. Before the principle of development can be determined, land contamination should be investigated to see whether it could preclude certain development due to environmental risk or cost of remediation.

Pollution

If the proposed development use has the potential to pollute ground or surface water receptors then an assessment to establish whether the risk of pollution is acceptable or can be satisfactorily mitigated for will be required within any planning application.

Ecology

If a Main River is located on or within 8 metres of your proposed development site an ecological survey is required to establish whether development is likely to have a detrimental impact on the biodiversity of the watercourse. We would not support development proposals if there was shown to be a likely detrimental impact on the water environment. In accordance with the NPPF, any development proposal should avoid significant harm to biodiversity and seek to protect and enhance it.

Cont/d.. 2

Opportunities to incorporate biodiversity in and around the development will be encouraged.

To identify any Main Rivers in proximity to your proposed development please see our Main Rivers Consultation Map: http://apps.environment-agency.gov.uk/wiyby/151293.aspx

Water Framework Directive (WFD)

With any development alongside watercourses, consideration should be given to the requirements of the Water Framework Directive (WFD) http://ec.europa.eu/environment/water/water-framework/ .

This includes preventing overall deterioration in water quality and promoting improvement in the ecological status of any water body. Actions to achieve this are listed in the North West River Basin Management Plan (RBMP). https://www.gov.uk/search?q=River Basin Management Plans.

Where appropriate, a WFD Assessment should assess any potential impacts on the watercourse and demonstrate that the required enhancements will be delivered. In some cases the requirements of a WFD assessment can be incorporated into an Environmental Impact Assessment. Any development that has the potential to cause deterioration in classification under WFD or that precludes the recommended actions from being delivered in the future is likely to be considered unacceptable to us; http://planningguidance.communities.gov.uk/blog/guidance/water-supplywastewater- and-water-quality/water-supply-wastewater-and-water-qualityconsiderations- for-planning-applications/

Environmental Permitting Regulations

To see if your proposed development requires an Environmental Permit under the Environment Permitting Regulations please refer to our website: https://www.gov.uk/guidance/check-if-you-need-an-environmental-permit Permanent structures in, over, under or within 8m of a main river may require an Environmental Permit.

The Environmental Permitting (England and Wales) Regulations 2016 require a permit to be obtained for any activities which will take place: • on or within 8 metres of a main river (16 metres if tidal) • on or within 8 metres of a flood defence structure or culvert (16 metres if tidal) • on or within 16 metres of a sea defence

• involving quarrying or excavation within 16 metres of any main river, flood Cont/d.. 3

defence (including a remote defence) or culvert • in a floodplain more than 8m from the river bank, culvert or flood defence structure (16 metres if it’s a tidal main river) and you don’t already have planning permission.

For further guidance please visit https://www.gov.uk/guidance/flood-risk- activitiesenvironmental-permits or contact our National Customer Contact Centre on 03702 422 549. The applicant should not assume that a permit will automatically be forthcoming once planning permission has been granted, and we advise them to consult with us at the earliest opportunity.

Please note

This document is a response to a pre-application enquiry only and does not represent our final view in relation to any future planning application made in relation to any site.

You should seek your own expert advice in relation to technical matters relevant to any planning application before submission.

If you have any questions please contact the Greater Manchester Merseyside Cheshire Sustainable Places team: [email protected]

Further pre-application options

We are able to provide detailed and bespoke advice and answer technical questions for a charged fee which equates to £100 per hour VAT.

If you are interested in finding out more about this service, please email: [email protected]

We can explain this service and provide you with a bespoke quote for further pre application advice that you may require.

Yours sincerely

Mrs SYLVIA WHITTINGHAM Planning Advisor

Direct dial 0203 0251059 Direct e-mail [email protected]

End 4

Millstream Lane, Oldham Flood Risk Assessment

Appendix G JFLOW Modelled Mapping

13597-FRA-01

66 NOTES:

75 64 1) ALL DIMENSIONS ARE IN METRES AND ALL LEVELS IN METRES 72 65 ABOVE ORDNANCE DATUM UNLESS STATED OTHERWISE 59 74 71 LEGEND ± 66 69 66 Site Boundary 73 (! Flood Depths Maximum Flood Depth (m) 66 0 - 0.3 0.3 - 0.6 64

66 65 0.6 - 1.2

(! 1.2 - 2.4 (! (! > 2.4 70 (! 63 ! (! (! (

68 (! ! (! 60 ( (! 58 (! (! 66 (! (! 65 61

62 67 63 62 66 64 69 63 72 72 70 60

65 71

73 67 68 63 64

0.061 m (! 64 76 0.102 m 77 (! 79 74 78 62 0.085 m (! CLIENT: 58 0.25 m 59 (! 0.198 m SMITH MEEHAN LTD 57 83 (! 82 0.051 m 0.19 m (! (!

0.236 m 59 75 0.133 m (! 0.112 m (! (! 80 0.257 m www.waterco.co.uk (! SCHEME: MILLSTREAM LANE, 80 0.299 m 0.293 m 60 87 (! (! 58 OLDHAM

PLOT TITLE: 0.115 m 0.249 m 85 88 (! (! 86 MAXIMUM FLOOD DEPTH 1% AEP FLUVIAL EVENT 81 JFLOW MODELLING DATA

PLOT STATUS: DATE: FINAL 09/03/2021 62 89 PLOT SCALE @ A3: DRAWN: CHECKED: APPROVED: PLOT SCALE @ A3: 1:500 CM AW VG 1:1,500 61 62 (UNLESS STATED OTHERWISE) 0 15 30 60 90 120 150 0 5 10 20 30 40 50 90 PLOT NAME: REV: 85 63 m 84 m 64 13597-JFLOW_Modelled _Outputs - CONTAINS OS DATA © CROWN COPYRIGHT (2021) © ENVIRONMENT AGENCY COPYRIGHT AND/OR DATABASE RIGHT (2021). ALL RIGHTS RESERVED. 66 NOTES:

66 (! 65 0.6 - 1.2 (! (! 1.2 - 2.4 (! (! (! (! > 2.4 70 (! 63 (! (! (! (! 68 (! ! (! 60 ( (! (! 58 (! (! 66 (! (! 65 61

62 67 63 62 66 64 69 63 72 72 70 60

65 71

0.066 m 73 (! 67 68 63 64 0.108 m (! 0.16 m (! 64 76 0.206 m 77 (! 79 74 78 62 0.059 m 0.089 m 0.126 m (! (! (! CLIENT: 58 0.231 m 59 (! 0.191 m SMITH MEEHAN LTD 57 83 (! 82 0.154 m 0.148 m 0.144 m (! (! (!

0.202 m 59 75 0.215 m (! 0.211 m (! (! 80 0.225 m www.waterco.co.uk 0.146 m (! (! SCHEME: MILLSTREAM LANE, 80 0.224 m 0.218 m 60 87 (! (! 58 OLDHAM

PLOT TITLE: 0.214 m 0.224 m 85 88 (! (! 86 MAXIMUM FLOOD DEPTH 0.1% AEP FLUVIAL EVENT 81 JFLOW MODELLING DATA

Appendix H PFRA Groundwater Map

13597-FRA-01

North Location Plan

Oldham Council

Legend Oldham PFRA Study Area RISK >= 75% >= 50% <75% >= 25% <50% < 25%

Bank Quay House Sankey Street Warrington WA1 1NN United Kingdom www.jbaconsulting.co.uk t +44 (0)1925 570876 f +44 (0)4588 627772 e [email protected]

Other offices at Atherstone, Doncaster, Edinburgh, Haywards Heath, Limerick, Newcastle upon Tyne, Newport, Northallerton, Saltaire, Skipton & Tadcaster

for OLDHAM COUNCIL PRELIMINARY FLOOD RISK ASSESSMENT

Areas Susceptible to Groundwater Flooding

This document is the property of Jeremy Benn Associates Ltd. It shall not be reproduced in whole or in part, nor disclosed to a third party, without the permission of Jeremy Benn Associates Ltd.

Drawn by: Ed Blackburn Scale: Date: 09/05/2011 Not to scale Status: FINAL

File Name: N:\Graphical Data\ArcView\

Drawing Number: Figure 5-2

Original @ A3