statement non- technical summary · summary on behalf of: castell y mynach estate in respect of:...

16
ENVIRONMENTAL STATEMENT NON- TECHNICAL SUMMARY CASTELL Y MYNACH ESTATE LAND SOUTH OF CREIGIAU (LDP ALLOCATION - SITE E)

Upload: others

Post on 02-Aug-2020

0 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

ENVIRONMENTAL STATEMENT NON-TECHNICAL SUMMARY CASTELL Y MYNACH ESTATE

LAND SOUTH OF CREIGIAU (LDP

ALLOCATION - SITE E)

Page 2: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

ENVIRONMENTAL STATEMENT NON-TECHNICAL SUMMARY On behalf of: Castell Y Mynach Estate

In respect of: Land South of Creigiau (LDP Allocation - Site E)

Date: June 2019

Reference: 2999ca

Author: OR / GH

DPP Planning

Sophia House

28 Cathedral Road

Cardiff

CF11 9LJ

Tel: 029 2066 0265

E-mail [email protected]

www.dppukltd.com

CARDIFF LEEDS LONDON MANCHESTER NEWCASTLE UPON TYNE

Page 3: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 3

Introduction

A planning application has been submitted to Cardiff Council by Castell Y Mynach Estate (the applicant) for

a new community of approximately 650 homes on land south of the existing Town of Creigiau (the site).

An Environmental Impact Assessment (EIA) has been undertaken with input from a range of technical

experts and qualified persons. From this, a detailed Environmental Statement (ES) has been prepared to

accompany the planning application which assesses and details any likely significant environmental effects

arising from the development and development process and the measures necessary to reduce and

mitigate any identified impacts.

The ES is set out as per the following structure for ease of navigation:

• Volume 1: Non-Technical Summary (this document) – a summary of the EIA, the likely significant

effects of the proposed development, appropriate mitigation measures and any anticipated

residual effects;

• Volume 2: Main Document – provides the full text of the ES along with associated figures and tables

of relevance; and

• Volume 3: Technical Appendices – contains all technical surveys, reports and supporting

documents referred to in the main text of Volume 2.

The Non-Technical Summary (NTS) provides an overview of the main findings of the ES. The aim is that this

document will help people to understand the main conclusions drawn from the EIA process and provide

the results in a more accessible and summarized format.

Copies of the full ES, along with all the planning application documents, can be inspected at the Council’s

offices at City Hall, Cathays Park, Cardiff, CF10 3ND and on the Council’s online portal

https://planning.cardiff.gov.uk/online-applications/. *

Copies of the full ES are also available for purchase from DPP, the Planning and EIA consultants who are

working on behalf of the applicant by writing to the following address: DPP Planning, Sophia House, 28

Cathedral Road, Cardiff, CF11 9LJ. Additional hard copies of the ES can be obtained at a cost of £XX or

alternatively in XX format for £XX. *

*not available as part of the Consultation.

Page 4: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 4

Site and Surroundings

The site extends to 38.9 hectares and is an irregular in shape. The site is located directly adjacent and to

the south of the village of Creigiau, which is located approximately 10km west of Cardiff City Centre. The

south of the site bounds Llantrisant Road (A4119), beyond which is currently open countryside. The eastern

boundary of the site is formed by Cardiff Road which is one of the main routes from Llantrisant Road into

the village of Creigiau.

Site Location Plan

The site is well located in terms of Llantrisant Road, which is the main route between Cardiff and Llantrisant.

This area, termed the ‘North West Corridor’, is identified as a ‘Strategic Opportunity Area’ under the Wales

Spatial Plan (2008 update).

No buildings are present within the site boundary. The site consists mainly of grassland and wet pasture

with a large area of ancient woodland sitting within the centre of the site. It is bordered to the north by the

southern boundary of Creigiau village, with hedgerows and landscape tree planting providing the majority

of on-site and edge boundaries. The former railway corridor dissects the eastern part of the site and is

raised towards the north of the site and at grade to the south.

The site is characterised by a high point to the east (Robin Hill) with levels falling to the north, west and

south from this point. Land to the centre of the ancient woodland similarly has a high point at the centre

with levels falling to the east, north and west. Land between the railway corridor and ancient woodland is

Page 5: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 5

more level. There are two watercourses on the site, one un-named watercourse at the western boundary

of the ancient woodland, and the Nant Henstaff to the east of the woodland. The site does not fall within

an area of flood risk and is classified as low risk in the Cardiff Strategic Flood Risk Consequences Assessment

carried out in 2009.

To the north of the site, the village of Creigiau contains approximately 1,000 homes and has a current

population of approximately 2,400 people. Local amenities include a bilingual primary school, a golf club, a

small Tesco Express convenience shop, a Post Office, a recreation ground managed by village residents, a

pharmacy, and 'The Creigiau Inn' public house. In addition, there are bus stops located along Ffordd Dinefwr

and Cardiff Road just north of the site. The site is therefore accessible by a number of transport modes.

There are no designated cycle routes in proximity to the site. However, it is considered that the moderate

traffic levels and the promotion of low vehicle speeds will result in many cyclists feeling comfortable cycling

on the highway network.

Adopted Local Development Plan

There are a number of policies that provide guidance for social and economic development in the UK, Wales

and at a local authority level. The key documents relevant to this chapter are set out below.

Page 6: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 6

At a national level, Planning Policy Wales (PPW) Edition 10 (December 2018) sets out the land use planning

policies of the Welsh Government (WG). This document is supplemented by a series of Technical Advice

Notes (TANs). Other national documents

to consider include the Wellbeing of

Future Generations (Wales) Act 2015

and the ‘People, Places, Futures’ Wales

Spatial Plan (Welsh Government:

November 2004 and 2008 update).

The Cardiff Local Development Plan

(adopted January 2016) is used to guide

and manage development providing a

basis by which planning applications will

be determined. ‘South of Creigiau’ is

allocated as Strategic site ‘E’ under

Policy KP2 of the Local Development

Plan. This is one of the strategic sites

that Cardiff Council has allocated to help

meet the housing need identified during

the plan period.

The Proposed Scheme

The proposed development is to create a new community in a very well-connected part of the city. The

residential-led scheme is proposed to comprise the following:

• Approximately 650 new homes (Use Class C3);

• Approximately 21 ha of Open Space and Green Infrastructure including:

o 7.8ha Central woodland;

o 0.33ha equipped play;

o 12.68ha other public open space including boundary planting, watercourses, railway corridor);

• Transport Infrastructure including two new access points into the site.

Page 7: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 7

Proposed Indicative Masterplan

The proposal is to be divided into separate development phases as below:

• Phase 1: The Village (western part of the site) – mainly residential units and associated open space;

• Phase 2: Robin Hill – Residential development along with open space provision, vehicular, cyclist

and pedestrian access routes;

• Phase 3: Woodland Edge – mainly residential with large areas of open space.

Residential areas comprise all land use across the site with building heights not exceeding 3-storeys and an

average overall density of around 35 dwellings per hectare. There is a clear hierarchy of density and scale

in the site with higher housing densities proposed around main accesses into the site and reduced densities

further away from these elements. Higher density is also proposed immediately to the east of the woodland

where the land is at its flattest. On the more visually sensitive locations, particularly Robin Hill, density has

purposely been kept lower.

The Green Infrastructure strategy proposes a network of linked open spaces that will be accessible to new

residents and the existing community. The network of green uses will permeate the development and

comprise a range of functions.

Page 8: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 8

Green Infrastructure Strategy

Alternative Sites and Development Options

The EIA Regulations require the ES to set out the main alternatives considered by the developer. The project

site is allocated for strategic development in the Cardiff Local Development Plan (Strategic Site ‘E’). For this

reason, the option to ‘do nothing’ would undermine the plan’s strategy as it would create an imbalance

between the supply of houses required and those delivered. Since the site has been considered in detail in

the Cardiff Local Development Plan, it is not necessary to re-assess the potential for alternative sites.

Considering that this allocation in the Cardiff Local Development Plan promotes the principle of the site’s

development for residential, there is no further necessity at this point to consider alternative locations for

the project.

The scale and nature of development is defined by the Cardiff Local Development Plan on the basis of

meeting the housing needs of Cardiff. The total site allocation for ‘Land South of Creigiau’ is for 650 new

homes. Based on the site application area and detailed capacity investigations that have been undertaken,

the site subject to this planning application is proposed to deliver approximately 650 new homes.

Society and Economics

The society and economic assessment considers the current, baseline situation; the potential impact

effects (both positive and negative) arising from the proposed development; and identifies any necessary

Page 9: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 9

mitigation measures. A number of socio-economic benefits are likely to arise as a result of the proposed

development both during site preparation and construction of the development and during operation.

• Provision of new housing – the scheme will deliver market and affordable housing which will assist

in meeting Cardiff’s LDP requirement for provision of 45,415 new homes between 2006 and 2026.

The proposed site contributes towards this need and is considered strategically important in the

delivery of the LDP growth and in an area where there is need and demand for affordable and

family housing.

• Employment and Economy – The development will help support construction firms operating in

the region and provide direct and indirect jobs in the construction industry, as well as the supply

chain. This will contribute towards Cardiff’s LDP target for provision of 40,000 new jobs in Cardiff

between 2006 and 2026.

• Green Infrastructure – the scheme is expected to impact on existing community facilities but will

also benefit new residents and the existing community by providing a significant quantum of new

additional open space and facilities within the proposed development. A varied mix of open space

provision is proposed as part of the development which will meet the demand generated by the

development proposals and will form a network of open spaces.

Possible temporary impacts of construction on the amenity of the residents in the neighbouring residential

areas will be mitigated through the agreement of planning conditions on working practices, including the

agreement of a Construction Environmental Management Plan (CEMP).

The development will generate a need for social and community facilities. This need for, and provision of,

community buildings, education, health and open space facilities within the local area has been assessed

and potential impacts are mitigated through the provision on site and financial contribution, as required.

Transport, Movement and Access

The site is relatively well located in terms of proximity and easy access by foot to a number of local facilities,

using both pavements and PRoWs. Most of Creigiau is within a comfortable 15-minute walk from the

proposed development using the existing pedestrian facilities. Through careful design, the scheme has the

potential to improve accessibility between the site and the village of Creigiau.

The Cardiff Cycling Strategy 2016-2026 sets out the Council’s vision for cycling and refers to the Integrated

Cycle Network. Of these, Policy EW54: South of Creigiau aims to create a segregated cycle route through

the development with spur routes to local centres, and priority at junctions over other transport modes.

There are six bus stops within close proximity to the site and the nearest rail station to the site is Pontyclun

rail station which is located approximately 6km from the site. It serves a significant number of stations

between Maesteg, Cardiff Central and Cheltenham, at an hourly frequency. With regard to the existing

highways network, the proposed development would result in additional traffic on the highway network

external to the application site. However, it is considered that this effect would have a minor, adverse

impact associated with the change in traffic volumes and associated increases in delays.

Page 10: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 10

Ecology and Nature Conservation

Ecological features have been evaluated and the likely effects of the proposed development on them has

been assessed in line with current best practice guidance for ecology.

The Site is dominated by improved and semi-improved grassland, which is where the majority of the

development will be located. Other habitats include plantation and semi-natural woodland (including

ancient woodland), marshy grassland, watercourses and drains, a pond, hedges, scrub and tall ruderal

vegetation. Three SINCs, of county-level ecological importance, are present within or partially within the

Site.

The site supports, or has the potential to support, fauna that could be significantly affected by the

proposals. These include bats, birds, reptiles, and invertebrates. Surveys suggest that otter, water vole,

dormouse, great crested newt and badger are unlikely to be affected by the proposed development.

No bat roosts are likely to be affected, and the effect on commuting / foraging bats is assessed as negligible

– habitat diversity will increase with gardens, improvement of the Nant Henstaff corridor, creation of

drainage features such as shallow vegetation channels, and the planting of buffer habitats around wooded

areas. Higher quality habitats for bats are retained and buffered. An increase in lighting across the Site will

be managed according to a sensitive lighting scheme and key wooded habitats will be protected from

excessive light spill.

The primary features of interest for birds are the woodland habitats. These are retained and enhanced, and

semi-improved grassland will be replaced with suburban gardens, vegetation channels, marshy grassland

and broadleaved plantation woodland with an enhanced structure. As the garden and public green space

vegetation develops in structure, the bird assemblage is likely to change, but is likely to increase in diversity

and numbers. The effect on the bird assemblage is assessed as beneficial at the level of the Site.

The length of Nant Henstaff SINC within the Site will be re-profiled, diversified and incorporated into a

wider drainage strategy for the Site. This will give rise to enhancement of a relatively degraded length of

stream. With mitigation measures in place during construction the Castell-y-Mynach SINC and the

Cadoxton & Trehafod Branch Line SINC are unlikely to be adversely affected and, with the adoption of long-

term protection, enhancement and management measures, the development proposal should give rise to

beneficial effects of significance at the level of the Site in respect of Nant Henstaff and Castell-y-Mynach

SINCs. Long-term effects on the Cadoxton & Trehafod Branch Line SINC are likely to be negligible.

A range of mitigation and enhancement measures have been designed into the development proposals.

These include improvement of the Nant Henstaff corridor, vegetation buffering around Castell-y-Mynach

Wood and alongside the Trehafod and Cadoxton Branch Line, clearly defined access through Castell-y-

Mynach wood to protect sensitive habitat, diversification of the structure and interest of boundary

plantation woodland, and incorporation of replacement marshy grassland, wetland and scrub into the

drainage system.

Page 11: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 11

Additional measures will ensure minimisation of effects during construction and occupation; and a Strategic

Green Infrastructure Strategy will identify long-term management and monitoring provision for mitigation,

compensation and enhancement measures outlined in this chapter.

The measures proposed will minimise the effects of the development on ecological features of importance

and ensure legal compliance in respect of protected species. The development is consistent with relevant

biodiversity planning policy and is considered to contribute to the aims of the Environment (Wales) Act in

maintaining and enhancing biodiversity and promoting the resilience of ecosystems – in particular,

woodland, watercourses, hedges and scrub, marshy grassland and ponds. Local habitat connectivity will be

maintained and there will be an increase in scrub, woodland and wetland habitat.

Landscape and Visual Impact

An assessment of the likely landscape and visual effects of the proposed development has been carried out

in accordance with nationally agreed “best practice” standards of landscape assessment. Various data has

been analysed including historic maps, aerial photographs and planning background information. A detailed

inspection has been made of the site, looking at its present condition and potential development impacts.

Landscape and visual impacts have been assessed for the construction stage, immediately after

construction and after mitigation planting becomes established. The evaluation does take account of the

full range of mitigation measures which are proposed.

The Application Site is located within a low-lying rolling landscape with a mosaic of farmland and woodland

tree cover, with Garth Hill visually dominant to the north. The Site is surrounded on the northern side by

extensive housing estates at Creigiau and enclosed on other sides by woodland or tree belts. The fields

within the Site are of similar scale to those in the surrounding area.

Settlement in the Study Area is generally rural and scattered, but there are larger areas such as Creigiau

which are suburban in character, and major landscape changes are in progress with the construction of the

Junction 33 mixed used development just to the south of the site. The development will form a natural

extension of the existing settlement of Creigiau with the enclosing boundary vegetation largely screening

it from wider views in the landscape.

A Green Infrastructure and Landscape Strategy have been developed which substantially retain and

enhance the existing boundary planting and introduce new area of planting within the development. The

site will retain a strong green edge when seen from the surrounding land. Parts of the existing residential

areas in Creigiau on the adjacent edges of the site will experience significant visual impacts. However, no

significant visual impacts have been identified for other settlements.

There will be minimal visual effects on road users when the development is complete, except for localised

effects at the locations of the proposed new accesses off the A4119 and Cardiff Road. No significant residual

effects have been identified on the local public footpath system. Some parts of the open access land on

Garth Hill may have distant glimpsed views of parts of the development, but effects at all stages of

development will not be significant.

Page 12: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 12

No significant additional residual effects have been identified when the additional effects of the Application

Site are considered along with the known proposals for Strategic Sites C and D. The overall conclusion is

that the proposed development at the Application Site at Creigiau will be a natural extension to the

settlement and will fit comfortably within the wider landscape.

Hydrology and Drainage

The long-term impact of the proposed development with regards to hydrology and drainage is considered

to be neutral or slight if mitigation measures are carried out. In particular, these relate to a robust and

monitored CEMP to mitigate potential impacts during construction and the implementation of the

proposals outlined in the drainage strategy to manage surface water runoff volumes, rates and water

quality. The drainage strategy measures have the potential to provide a positive impact on the water quality

of the watercourses on site through improvements to physical waterbody habitat features.

The outline drainage strategy for the proposed development would generate runoff rates and volumes are

restricted to pre-development greenfield rates for both development sites. Collectively the drainage

strategies can be regarded as tertiary mitigation, meaning that it would be unlikely that there would be any

significant cumulative effects on surface water flooding. Similarly, both developments are likely to need to

contribute towards upgrades to the Coslech Wastewater Treatment Works, and so it would be unlikely that

there would be significant cumulative effects arising from combined foul flows.

Ground Conditions

Potential On-Site Sources of Contamination have been identified as follows:

• Made Ground possibly including metals, metalloids, asbestos, polycyclic aromatic hydrocarbons

(PAH) and petroleum hydrocarbons associated with the construction and use of the railway line.

• Atmospheric fallout of coal dust from colliery trains along the alignment of the railway line,

resulting in metals, metalloids and PAH contamination of near-surface soils.

• The site is in a Radon Affected Area where greater than 10% of homes are above the action level.

With appropriate mitigation it is considered that the above impacts can be mitigated, however, in order to

confirm the actual risks to receptors and confirm the ground conditions with respect to potential

geotechnical and geo-environmental risks, an appropriate intrusive ground investigation will need to be

undertaken. Based on the current data, this site investigation is likely to comprise:

• The excavation of trial pits to allow collection of samples for geotechnical and chemical

analysis, to assess trench stability, over break potential and “diggability” and allow soil

infiltration rate testing to be undertaken. Trial pits should be positioned to provide general

coverage and to target potential areas of uncertainty, i.e. suspected areas of Made Ground;

• The undertaking of soil infiltration testing;

• TRL Dynamic Cone Penetration tests to correlate to CBRs for pavement design;

• Geotechnical testing of soils and rock; and

• Contamination analyses of soil and groundwater.

Page 13: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 13

• Boreholes and groundwater monitoring may also be necessary to provide suitable

geotechnical recommendations for retaining wall design.

• Targeted investigation is recommended in the east of the site to determine if there is

significant contamination from the historical railway line that could affect the development.

• Excavation should also be carried out in the area of the former quarry in the southeast of the

site to confirm the suspected absence of significant infill materials.

Noise

The noise and vibration assessment address the potential constraints from existing and potential future

sources of noise and vibration on the external and internal noise environments within the Proposed

Development and where necessary sets out the types of mitigation measures that would be adopted to

overcome these constraints as well as the proposed development's potential impacts and likely effects of

noise and vibration on existing and future sensitive receptors during the demolition and construction

works, as well as from operational noise.

During the operational phase, changes in the road traffic flows experienced at existing receptors brought

about by the Proposed Development may introduce a change in the operational noise impact. This change

in road traffic noise due to the operation of the Proposed Development would result in magnitude impacts

that are of medium beneficial impact, negligible impact and a medium adverse impact at three different

test locations. During the construction phase, there is predicted to be a high magnitude of impact,

immediately adjacent to the works, however, this is expected to be short-term.

Magnitudes of impact for the typical 200m construction noise on the Site are low for all phases except

internal works, where the magnitude is negligible. Proposed mitigation and residual impacts are not

required for operational or construction phases. However, minor measures for mitigation of slightly

elevated outdoor living area noise levels such as careful orientation of gardens and fencing will need to be

implemented.

Air Quality

The construction works have the potential to create dust. During construction, it will therefore be necessary

to apply a package of mitigation measures to minimise dust emissions. With these measures in place, it is

expected that any residual effects will be ‘not significant’.

The operational impacts of increased traffic arising from the additional traffic on local roads, due to the

development, have been assessed. For nitrogen dioxide, a sensitivity test has also been carried out which

considers the potential under-performance of emissions control technology on future diesel cars and vans.

It is concluded that concentrations of both nitrogen dioxide and particulates will remain below objectives,

taking into account the worst-case sensitivity test, with or without the proposed development.

The additional traffic generated by the proposed development will affect air quality along the local road

network. The assessment has demonstrated that the increases in annual mean concentrations of nitrogen

dioxide will range from 0% to 3% and the impacts will be mostly mainly negligible with a few minor adverse

Page 14: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 14

taking into account the worst-case sensitivity test. The effects of local traffic on the air quality for future

residents have been shown to be acceptable, with concentrations below the air quality objectives.

The overall operational air quality effects of the proposed development are judged to be ‘not significant’.

This conclusion takes account of the uncertainties in future projections for nitrogen dioxide and a number

of assumptions in the assessment. It is based on annual mean nitrogen dioxide concentrations at existing

receptors being just below the objective at three existing receptors (approximately 20 residential

properties), and the impacts here being minor adverse, while the impacts elsewhere are all negligible. Air

quality conditions for future residents of the development itself will be acceptable.

Cultural Heritage and Archaeology

The archaeological assessment has identified the potential direct and indirect effects of the proposed

development together with an assessment of the setting and significance of high value heritage assets. A

total of 25 heritage assets have been identified within the study area. A single linear heritage asset, the

Barry-Trehafod Railway, has been identified within the development area and assessed as having a Low

magnitude of direct effect, with the significance of direct effect assessed as Slight Significance. It has been

assessed that there will be no direct impact on the remaining 24 heritage assets with the study area. For

the purposes of the assessment of setting and significance of heritage assets a much larger study area of

between 0.5km to 18km was applied. With no Registered Parks and Gardens in the proposed development

area, Craig Y Parc is the 0.3km to the east. A total of three Historic Landscapes were considered (The

Rhonda; Merthyr Mawr, Kenfig & Margam Burrows; Gwent Levels but lie a considerable distance outside

the study area. There are no Scheduled Ancient Monuments or Listed Buildings within the proposed

development area and only three listed buildings within the wider study area. The closest and arguably

most important historic building within the study area is the medieval and Grade II* Listed Castell-Y-Mynach

manor house, located immediately to the north of the proposed development area. The study area contains

two further listed buildings, the Grade II Listed 15th century Pant-y-gored farmhouse and the Arts and

Crafts Creigiau village/church hall.

Craig Y Parc Registered Park and Garden and Castell-Y-Mynach were assessed as having a ‘Very Slight’

indirect effect as the ‘key views and/or essential lines of sight to and from the heritage assets could be

noticeable by the proposed development but resulting in little discernible severance of cultural heritage

links’. Further assessment of the setting of these heritage assets established no indirect effect from the

proposed development as the ‘key views and/or essential lines of sight to and from the heritage assets are

not noticeable resulting in no severance of cultural heritage links’. The proposed development being

constructed away from any significant views from the registered park and garden with no resultant change

to its significance or setting. Likewise, the views to and from Craig Y Parc Iron Age Camp, located inside the

registered park and garden, towards the proposed development area are currently obscured by the

woodland with no resultant change to the significance or setting of the monument. Castell-Y-Mynach is

now engulfed in 20th century residential housing estates, severing any connection with its original

agricultural landscape lying in the proposed development area resulting in no change to the significance or

setting of the historic asset.

Page 15: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

Castell Y Mynach Estate

Land South of Creigiau (LDP Allocation - Site E) 15

A series of mitigation measures are proposed to reduce the potential effect of the proposed development

on the archaeological resource. Provided these are implemented, then the residual effect of the proposed

development on the archaeological resource will be reduced to none.

Cumulative Effects

Allowing for mitigation, the predicted impacts for each of the factors investigated in this EIA range from

negligible to slight adverse, however, in many cases, the impact is none or negligible/not significant.

The main cumulative impacts would be from a visual impact perspective, albeit this has been assessed as

being slight adverse. There will be middle and long-distance views down across the 3 strategic sites from

elevated viewpoints on the higher ground to the north and north east. The extent of the existing

hedgerows and tree cover, combined with the new landscape structure planting, will do much to assimilate

the developments, and little will be visible of Strategic Site E in particular. Where, parts of Strategic Site E

are visible, they will appear as a modest expansion of the Creigiau urban area.

Summary & Conclusion

The proposed development has been properly considered and carefully designed to ensure that the

proposed development reflects the site’s environment and landscape, site accessibility and site conditions.

Significant inherent mitigation is embedded in the proposals for the site (as illustrated on the Indicative

Masterplan). This includes the provision of informal and formal open spaces, the retention of existing

woodland and hedgerows and a landscaping strategy, which includes supplementary buffering, are a core

part of the scheme.

The ES has comprehensively assessed the potential for environmental effects from the proposed

development and development process. It has identified areas where there is a potential for both positive

and negative impacts. It will be important to manage the development process on the site so that effects

can be limited in duration, magnitude or extent (especially during construction). Mitigation measures will

be implemented in accordance with best practice to either remove or reduce these impacts.

Given the current condition and position of the site, the development proposals capture the potential to

deliver an extension to Creigiau through the provision of new housing and open space to meet the

identified need for new homes (as recognised in the LDP).

There are very limited significant adverse impacts predicted to result from the development, which

primarily relate to short term and minor impacts during the construction phase of the development. There

will be some short adverse impacts on ecology and landscape which will be reduced as the proposed

vegetative screening and landscape framework matures and assists in integrating the proposed

development into the landscape. The proposed development retains and provides new habitats at a similar

scale to some of the ecological habitats to be lost (i.e. hedgerow, woodland, ponds and watercourses) and

this, combined with appropriate management would maintain, and enhance the biodiversity of the site.

Page 16: STATEMENT NON- TECHNICAL SUMMARY · SUMMARY On behalf of: Castell Y Mynach Estate In respect of: Land South of Creigiau (LDP Allocation - Site E) Date: June 2019 Reference: 2999ca

DPP Planning

Sophia House

28 Cathedral Road

Cardiff

CF11 9LJ

Tel: 029 2066 0265

E-mail: [email protected]

www.dppukltd.com

CARDIFF LEEDS LONDON MANCHESTER NEWCASTLE UPON TYNE