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Darwin Green Two

www.darwingreen-consultation.co.uk

darwingreen.comdarwingreen.com

WelcomeWelcome to this public exhibition to inform you about the progress on the proposals for the Darwin Green Two development.

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display, please fill out a feedback form and let us know what you think. Members of the project team are on hand to answer

any questions you may have

Darwin Green One

Darwin Green Two

A14

Darwin Green Two


darwingreen.com

Background and constraintsIn January 2010 South Cambridgeshire District Council identified land within South Cambridgeshire and adjoining Darwin Green One for residential development.

The aim is to provide a sustainable, housing-led urban extension which ensures separation from the villages of Girton, Histon and Impington. Barratt Homes has already submitted a Scoping Report to South Cambridgeshire District Council to agree the structure and content of the Environmental Impact Assessment which is required for any application of this nature.

It is anticipated that an outline application will be submitted to South Cambridgeshire District Council in July 2013.

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Notes

Do not scale from this drawing - use figured dimensions only.

All dimensions are in millimetres unless otherwise stated.

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5 N o r t h f i e l d s P r o s p e c t , P u t n e y B r i d g e R o a d , L o n d o n , S W 1 8 1 P E

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M a r k R e e v e s

Barratt Homes Eastern Countiesand the North West Cambridge Consortium of Land Owners

Darwin Green 2Huntingdon Road Cambridge

11 896

Constraints & Opportunities Plan

Preliminary 2500 Feb 2013

SO01

Legend

Referenced Drawings

MRA: 10 896 SK26

Woods Hardwick: 16483-1013 rev C

Edge of existing settlement

Key views

B1049 Cambridge Road/Histon Road (Existing cycle/pedestrian provision)

Proposed vehicular/pedestrian/cycle linksinto site

Potential pedestrian/cycle links onto site

Interface with Darwin Green 2

Darwin Green 2 - Planning Application Boundary

Darwin Green - Land Ownership Boundary

Darwin Green 2 - Allocation Boundary

Orbital Cycle Network

Potential pedestrian links

Proposed Green buffer

Edge of potential development

Existing Footpath to be upgraded

Overhead electric supply constraint (indicative only)

Hedgerow to be retained

Watercourse to be Rerouted

Award Drain to be Rerouted

Award Drain to be Retained

Watercourse to be Retained

Woodland

Trees

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11 896

Constraints & Opportunities Plan


SO01

Legend

Referenced Drawings

MRA: 10 896 SK26


Edge of existing settlement

Key views

B1049 Cambridge Road/Histon Road (Existing cycle/pedestrian provision)

Proposed vehicular/pedestrian/cycle linksinto site

Potential pedestrian/cycle links onto site

Interface with Darwin Green 2




Orbital Cycle Network

Potential pedestrian links

Proposed Green buffer

Edge of potential development

Existing Footpath to be upgraded







Woodland

Trees

The scheme is required by Policy to include:

• Approximately 1100 homes, with a good mix of house types, sizes and tenures, including the provision of affordable housing

• Community facilities and infrastructure, including a secondary school, primary school, local shopping, outdoor sports facilities, open space and allotments, some of which are already being provided in the Cambridge City Darwin Green One development

• Highway capacity on the A14 between Girton and Milton

• Access points on Huntingdon Road and Histon Road as already dealt with through the Darwin Green One development

• Sufficient parking provision in line with Planning Policy

• Use of sustainable transport modes with a strong network of cycle and footpath links to neighbouring areas

• Landscaping that respects the Green Belt setting of Cambridge and view of key features in the City

• A sustainable drainage system which links to the scheme already agreed for Darwin Green One

• Details of a management strategy for services and facilities provided

• Noise and air quality assessments of issues arising from traffic on the A14

• A construction strategy to avoid construction vehicles travelling through existing residential areas of Cambridge and nearby villages

Darwin Green Two


darwingreen.com

Parameter plansC

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© The copyright of the drawings and designs contained therein remains with Mark Reeves Architects.

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M a r k R e e v e sA r c h i t e c t s

Do not scale from this drawing - use figured dimensions only. All dimensions are in millimetres unless otherwise stated.

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DateScale @ A3Barratt Homes Eastern Countiesand the North West Cambridge Consortium of Land Owners


11896

Parameter PlanLand UsePreliminary 5000 Jan 2013

SK10-

T e l: 020 8874 0484 F a x: 020 8877 1250 E m a i l: m a i l @ m r a l a r c h i t e c t s. c o . u k

Legend




Formal and Informal open space zones are liable to flex +/- 15m. Adjacent neighboringresidential land use will flex accordingly. Overall quantum to remain the same.

Predominantly residential zones, including associatedinfrastructure and facilities, such as access roads andplay areasFormal and informal open space zones and Country Park

1.8 ha Primary School

0.5 ha Primary School playing fields

2.5 ha Secondary School

4.0 ha Secondary School playing fields

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Up to 2 storeysminimum height 3m, maximum height 9.7m



Note: Height measurements indicated above include roof heights


Parameter PlanBuilding HeightPreliminary 5000 Jan 2013

SK11-

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Parameter PlanLandscapePreliminary 5000 Jan 2013

SK12 B

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Formal and informal open space zones and Country Park,containing SUDs and surface water drainage network(corridors may be crossed by access roads in places)





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Orbital Cycle Route within Darwin Green 1

Segregated pedestrian route

Indicative alignment of bus route

Darwin Green 1 bus route

Darwin Green 1 / Histon Road link

Proposed pedestrian/cycle route

Darwin Green 1 / Huntington Road link

Formal and informal open space zones and Country Park

Indicative alignment of bus route in Darwin Green 1



11896

Parameter PlanAccessPreliminary 5000 Jan 2013

SK13

Scale @ A3

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11896

Parameter PlanUrban DesignPreliminary 5000 Jan 2013

SK14

Legend




Indicative alignment of bus route

Key buildings

Key building frontages along main routes

Positive building frontages along green spaces

Formal and informal open space zones and Country Park


Land use

Access Urban design

Building heightLandscape

Parameter plans show guiding principles which help define the development:

• Land use - residential, community building, schools and public open space.

• Landscape - formal and informal public open space, retained / rerouted ditches and hedgerows.

• Building heights - three zones up to 2 storeys, 3 storeys and 4 storeys.

• Access - Primary vehicle access / bus route, pedestrian and cycle routes.

• Urban Design - Key / positive building frontages.

Darwin Green Two


darwingreen.com

Emerging landscape strategy Darwin Green Two promotes a significant quantity of public open space. Contained within the public open space are a series of water courses, woodlands, wildflower meadows and habitat corridors which connect with Darwin Green One and the wider landscape.

Within the landscape a variety of sports pitches, play facilities and allotments are further complimented by a generous Country Park for informal recreation. Existing water courses provide enhancement opportunities to promote new ecological habitats and improved biodiversity whilst a potential bund screening the A14 encourages opportunities for new viewpoints of the immediate and broader landscape.

DARWIN GREEN TWO, Cambridge PRELIMINARY POTENTIAL COMPONENTS FOR DISCUSSION Concept Landscape Masterplan SCALE:

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Darwin Green One

Overhead power lines and easement

A14

Primary School

Secondary School

School playing fields

BENCHMARK IMAGES


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Potential extent of A14 CPO



NOTESRecreation facilities and are based on preliminary calculations and •

understanding of SCDC requirements. SCDC to confirm acceptable

mix of provision. Provision is intended to compliment DG1.

The A14 Compulsory Purchase Order (CPO) boundary is illustrated •

as a dashed line for information.

The Landscape Bund is illustrated to accommodate approximate •

topsoil quantities generated from both DG1 and 2.

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KEY SPACES01. Primary Parkland

02. Informal activity areas

03. Wildflower meadows and habitat corridors

04. Woodland glades along bund ridge

05. Woodland

06. Elevated viewpoints

07. Balancing ponds

08. Green corridor links

09. Country park car park

10. New cycle and footpath link across A14

11. Balancing pond/ecological habitats

12. Drainage ditches

RECREATION FACILITIES(PRELIMINARY)

13. Sports pitches

14. LEAP

15. NEAP

16. Allotment

VIEWS Potential views

Retained Girton Gap


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NKEY SPACES01. Primary Parkland




05. Woodland


07. Balancing ponds







13. Sports pitches

14. LEAP

15. NEAP

16. Allotment











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KEY SPACES01. Primary Parkland




05. Woodland


07. Balancing ponds







13. Sports pitches

14. LEAP

15. NEAP

16. Allotment

VIEWS Potential views

Retained Girton Gap

Darwin Green Two


darwingreen.com

Existing ecologyThe habitat map, produced by ecologists assessing the ecological and biodiversity importance of Darwin Green Two, shows that a majority of the site is intensively managed arable land that supports mainly cereal crops, temporary grassland and small areas of fallow arable land.

Much of the arable land possesses wide margins of uncultivated improved grassland that are often used as vehicle access tracks. Some of the field boundaries have intact hedgerows and/or drainage ditches. The majority of the hedgerows are species-poor, and in general terms the habitats present are of limited botanical and nature conservation value.

Animal species that have been shown to utilise the site include farmland birds such as sky lark, linnet and yellow hammer, and a breeding pair of barn owl that utilise a nest box within the site. Small numbers of badger commute across and forage within the site, and common and soprano pipistrelle bat species make regular use of hedgerows and tree lines for foraging.

Strategies for ecological mitigation and enhancement to minimise adverse development effects and enhance biodiversity are being developed in consultation with the South Cambridgeshire District Ecologist.

Date of survey:

Job reference no:

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Figure 1

Phase I habitat map

10 April 2012

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Broadleaved semi-natural woodland

Mixed plantation woodland

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v v v Species-rich hedge with trees

wwwww Species-rich intact hedge

Species-poor intact hedge

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Dry ditch

Wet ditch/running water

X Scattered scrub

M Target noteStudy area

! Individual tree (Indicative only)

Arable (fallow)

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Figure 1

Phase I habitat map

10 April 2012

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Figure 1

Phase I habitat map

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Darwin Green Two


darwingreen.com

Emerging drainage strategySurface Water

• The surface water strategy for Darwin Green Two is based upon the stringent design parameters used and approved as part of the Darwin Green One development.

• The strategy is based upon a positive drainage system which restricts surface water runoff from the site during peak storm events to less than the natural Greenfield runoff. This is achieved by introducing flow controls in the system that reduce the peak flows during the storm event.

• Given the high ground water levels during certain times of the year, no allowance has been made for any infiltration. The surface water design will improve water quality and manage the flows through the system via a cascade of Sustainable Urban Drainage System facilities known as a treatment train.

• The surface water from the built development will discharge under gravity into Awarded Drain No.1 (164) following the existing topography via a series of drainage techniques consisting of permeable paving (at source), urban channels, traditional pipes and feature attenuation ponds which provide the final part of the treatment train. Awarded Drain 7 (359) located in the northwest corner of the site will be diverted together with the existing ditches within the sports pitch area to enhance the landscape.

• The Darwin Green One attenuation pond will be relocated forming part of the Darwin Green Two, pond 2.

Foul Drainage

• The foul drainage from the Darwin Green Two development will discharge under gravity via upgraded pipework along Blackhall Road to the existing Anglian Water pumping station in Hazelwood Close.

• The existing pumps will be upgraded and a new rising main provided along the Histon Road from the existing pumping station to the final discharge point which is located at the junction of Windsor Road/Histon Road.

• All offsite works will be designed and constructed by Anglian Water with the onsite new and modified works being undertaken by the Developer under S104 and S185 Agreements.

Darwin Green Two


darwingreen.com

Transport Pedestrian Routes

• The routes proposed will provide safe and attractive corridors free of obstacles.

• Pedestrian links will be provided to Girton, Histon and Cambridge via the Darwin Green One links at Blackhall Road, Brownlow Road, the Histon Road Link, Windsor Road, Whitehouse Lane and the Huntingdon Road non-vehicular link. These routes within the development will take priority over motor vehicles that will be restricted to a maximum 20mph speed.

Cycle Routes

• Darwin Green Two will provide direct routes for commuter cyclists to key destinations and direct cycleway linkage to Girton, Histon and Cambridge via the orbital cycleway which forms the boundary between Darwin Green One and Darwin Green Two.

Street Network

• The sites road network will be designed in accordance with Manual for Streets with a target design speed of 20mph (maximum). Vehicle speeds will be limited with the introduction of safe, legible traffic calming features.

• The detailed geometry will be based upon road cross-sections agreed with Cambridgeshire County Council for Darwin Green One with widening being provided to suit vehicle tracking requirements. The road network will consist of a clear hierarchy of streets linking into Darwin Green One at two locations.

Public Transport

• The proposed direct bus route from Histon Road to the Huntingdon Road running through the Darwin Green One development will be extended into Darwin Green Two utilising the Primary Street Loop. This will provide easy access encouraging its use particularly for the schools which benefit from public transport frontage.

Darwin Green 1

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11 896

Notes



Legend

Referenced Drawings

MRA: 10 896 SK26


Public open space

Acoustic bunding (indicative only)

Balancing ponds / drainage ditches

2FE Primary school

School playing field sites

Secondary school


Proposed pedestrian /cycle route

Darwin Green 2 - Planning application boundary

Darwin Green 2 - Allocation boundary

Building zone (up to 2 storeys - maximum height 9.7m)



Primary frontage

Marker building

Primary street

Secondary street

Tertiary street

Tertiary street shared surface

Darwin Green - Land ownership boundary

Urban swale

A14 widening draft CPO

Optional locations for a community building

Community focal centre

Proposed pedestrian route

Concept Master Plan


SK03.1

Darwin Green 1

A14

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Notes



Legend

Referenced Drawings

MRA: 10 896 SK26


Public open space



2FE Primary school


Secondary school








Primary frontage

Marker building

Primary street

Secondary street

Tertiary street



Urban swale





Concept Master Plan


SK03.1

Public open space

2FE Primary school

Secondary school




Primary street

Secondary street

Tertiary street




Darwin Green Two


darwingreen.com

Noise and air qualityNoise

The site will have an appropriate buffer zone and landscaped bounding separating it from the A14, and it is also largely screened from other local sources of traffic noise, which will minimise noise effects. The new development will also provide additional screening for some existing dwellings against distant noise from the A14.

The site layout will place sensitive garden areas behind the new dwellings, which will further reduce the outdoor noise levels within private amenity areas and enable relevant noise standards to be met.

Internal noise levels will be mitigated using appropriate window designs coupled with acoustic ventilation where necessary, thereby enabling a ‘good’ internal standard as defined by British Standard 8233.

All noise calculations have been based upon worst case 15-year design factor for traffic growth and assume that the existing noise contribution from the A14 will increase.

Air Quality

The allocated land at Darwin Green Two lies entirely outside the Council’s designated Air Quality Management Area (AQMA) alongside the A14, even under worst case weather conditions. Therefore, the air quality on the site is fully acceptable for residential development as all air quality objectives are met across the entire site and there is no requirement for any mitigation measures.

Public footpaths would be acceptable at various locations within the landscaped buffer area, including land within the AQMA, since users of such paths would only be present for relatively short periods of any day and would not be exposed to air pollution over the time periods that air quality objectives might be exceeded, i.e. 1 year in the case of the annual mean nitrogen dioxide (NO2) or 24-hours in the case of particulate matter (PM10).

Darwin Green Two


darwingreen.com

Emerging master planKey features of the master plan:

• Informal and formal public open space, together with large areas of parkland to the north and west

• Pedestrian / cycle access over the A14 to Histon, as well as a link to Girton

• Green corridors through the development linking to Darwin Green One

• Bus route through the development

• Schools and community buildings, including a focal centre

• High, medium and lower density housing providing apartments and homes

• Grid iron layout with perimeter blocks providing surveillance to all streets and public open space

• Housing to include detached, semi-detached and drive-through terraced houses with on-plot car parking to avoid the need for parking courts in housing areas

• Sustainable development including dual aspect houses and apartments to respond to site orientation

• Street hierarchy to create variety and assist legibility

• High quality gateway to Darwin Green on Histon Road frontage

• Creation of new edge to Cambridge City

Darwin Green 1

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Concept Master Plan


SK03.1

Darwin Green 1

A14

Histon R

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Legend

Referenced Drawings

MRA: 10 896 SK26


Public open space



2FE Primary school


Secondary school








Primary frontage

Marker building

Primary street

Secondary street

Tertiary street



Urban swale





Concept Master Plan


SK03.1

Darwin Green Two


darwingreen.com

Health and Community benefitsDarwin Green Two will provide a number of community benefits and facilities both in the development itself and within the wider area which are currently the subject of detailed discussions with South Cambridgeshire District Council. The facilities such as sport pitches, public open space, and well integrated pedestrian and cycle routes will facilitate and encourage residents to maintain an active and healthy lifestyle. The benefits are likely to include the on-site provision of:

• A country park;

• Green spaces and corridor links;

• Woodland glades and wildflower meadows;

• A primary school;

• A secondary school;

• Allotments;

• Sports facilities including playing pitches;

• Community building

• Bowling Green;

• Formal and informal children’s play facilities;

• Improvements to cycling routes, bus services, pedestrian routes and roads;

• Recycling facilities;

• Public art

Also included will be the off-site provision of:

• Bus services

• Cycle routes

• Pedestrian route improvements

• Road improvements

• Health centre provision

The provision of community benefits for the scheme is emerging work and it is important to understand the needs of local residents and interest groups.

What community facilities do you wish to see

either on Darwin Green Two or in the wider Cambridge area?

What health benefits do you think there will be?

Please give us your views.

Darwin Green One


darwingreen.com

Darwin Green One updateThe Cambridge Fringes Joint Development Control Committee first resolved to grant planning permission for Darwin Green in July 2010.

Although a resolution to grant was given by the Committee in 2010, the planning permissions will not be issued until Barratt Homes, the landowners and the three local authorities sign a Section 106 agreement. Discussions remain ongoing and will be completed imminently.

The outline planning application submitted to Cambridge City Council and the detailed planning application submitted to South Cambridgeshire District Council include:

• 1,593 homes, including 40% affordable homes

• Primary school with Children’s Centre

• Up to six small units for mixed retail / service use

• A centrally located park with open space for both informal use and outdoor sport facilities.

• Allotments

• Vehicular access from Huntingdon Road and Histon Road

• A balancing pond

Following the results of a trenching exercise carried out on the Darwin Green One (NIAB 1) site in early 2008, areas of archaeological interest were identified which would need to be subject to additional investigation.

In September last year, Albion Archaeology began the further investigations across the site. So far the findings have been interesting and include Roman coins, a fully intact Roman pot, a selection of iron and bronze age objects and a few human remains.

Their findings have now been extracted from the site and sent to various specialists around the country for further analysis. This analysis will take some time but will hopefully allow Albion to put together a clearer picture of what life would have been like on the site some 2000 years ago.

ARCHAEOLOGY

Jane Watt has been selected as this artist in residence for Darwin Green One. Jane is an artist who has made work in the public realm for almost twenty years. She is inspired by everyday materials, situations, conversations and spaces.

Past projects include changing the skyline of Shoreditch, East London with a flock of one hundred artificial birds on a city roof, trying to make a straight rainbow on the Pentland Hills in Scotland, creating a taste of summer in mid-winter on the streets of Helsinki and getting hundreds of people to dance under magenta spotlights in forgotten corners of north London.

ARTIST IN RESIDENCE

Darwin Green Two


darwingreen.com

Sustainability The Sustainability strategy for Darwin Green 2 is being developed around a wide range of sustainability issues. Our approach will minimise the environmental impacts during both construction and operational phases of the development whilst ensuring that natural resources are used responsibly:

• All dwellings on the Darwin Green site will be designed to achieve Code for Sustainable Homes level 4.

• The schools will be designed to achieve a minimum of a BREEAM ‘Very Good’ rating.

• The site wide energy strategy will be based on a best practice fabric first approach as follows:

–Minimisation of the energy demand of the scheme through passive design measures, energy efficient building fabric and systems

–Use of the most suitable Low and Zero Carbon systems (LZC) suitable for the scheme. Photovoltaics modules located on unshaded roof areas are expected to be used for most dwellings of the scheme.

–All dwellings will achieve Code for Sustainable Homes level 4 energy standards which is a 25% Improvement over Building Regulations 2010.

• Water efficient fittings and potential use of rainwater harvesting / greywater recycling to minimise potable water use.

• Materials selected based on the BRE Green Guide to Specification to minimise their environmental impact.

• Internal and external recycling bins provided for all dwellings.

• Very good environmental practice at construction site.

• Restoration, protection and enhancement of ecology and biodiversity on site.

• Cycle storage space provided for all dwellings. Safe cycle and pedestrian routes designed along the landscaping strategy.

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