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South Sebastopol
Required Addendum to the Outline ES (Canal Crossing)
March 2011
Waterman Transport & Development Limited
38 Cathedral Road, Cardiff CF11 9LL, United Kingdom www.watermangroup.com
Client Name: Barratt Homes Wales, Taylor Wimpey, Welsh Assembly Government
Document Reference: C 11765 110317 07 ES addendum
Project Number: CIV11765
Our Markets
Property & Buildings Transport & Infrastructure Energy & Utilities Environment
Quality Assurance – Approval Status
This document has been prepared and checked in accordance with Waterman Group‟s IMS (BS EN ISO 9001: 2009 and BS EN ISO 14001: 2004)
Issue Date Prepared by Checked by Approved by
Draft 17.03.2011 Susana Parker Kevin Llewellyn Andrew Wilkinson
Comments
Disclaimer
This report has been prepared for the sole and exclusive use of the Consortium involving Barratt Homes Wales, Taylor Wimpey and the Welsh Assembly Government from whom it was commissioned and has been prepared in
response to their particular requirements and brief.
This report may not be relied upon by any other party.
The Contracts (Rights of Third Parties) Act 1999 shall not apply to this report and the provisions of the said Act are expressly excluded from this report.
This report may not be used for any purpose other than that for which it was commissioned.
This report may not be reproduced and/or made public by print, photocopy, microfilm or any other means without the prior written permission of Waterman Transport & Development Ltd.
The conclusions resulting from this study and contained in this report are not necessarily indicative of future conditions or operating practices at or adjacent to the Site.
Much of the information presented in this report is based on information provided by others. That information has neither been checked nor verified by Waterman Transport & Development Ltd.
South Sebastopol
Project Number: CIV11765
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Contents
1. Introduction .......................................................................................................................................... 1
Preamble ................................................................................................................................................ 1
Legislative Background and Method Statement .................................................................................... 1
2. Project Description .............................................................................................................................. 2
The Site – Context ................................................................................................................................. 2
Site and Surroundings ........................................................................................................................... 2
3. Project Proposal .................................................................................................................................. 3
4. Residual Impacts, Environmental Effects and Management .......................................................... 4
Introduction ............................................................................................................................................ 4
5. Ecology and Nature Conservation ................................................................................................... 13
Introduction .......................................................................................................................................... 13
Legislative and Planning Policy Context .............................................................................................. 13
Assessment Methodology .................................................................................................................... 13
Baseline Conditions ............................................................................................................................. 15
Potential Effects ................................................................................................................................... 15
Residual Effects ................................................................................................................................... 20
Cumulative Effects ............................................................................................................................... 21
Summary .............................................................................................................................................. 21
6. Services (Utilities) ............................................................................................................................. 25
7. Society and Economy ....................................................................................................................... 26
8. Landscape Character and Visual Assessment............................................................................... 27
Introduction .......................................................................................................................................... 27
Planning Policy Context ....................................................................................................................... 27
Assessment Methodology .................................................................................................................... 28
Baseline Conditions ............................................................................................................................. 29
Likely Significant Effects ...................................................................................................................... 29
Mitigation Measures ............................................................................................................................. 33
Residual Effects ................................................................................................................................... 34
Cumulative Effects ............................................................................................................................... 34
Summary .............................................................................................................................................. 34
9. Transportation Assessment (Traffic, Transport and Movement) ................................................. 37
Introduction .......................................................................................................................................... 37
Likely Significant Effects ...................................................................................................................... 37
10. Archaeological, Built and Cultural Heritage ................................................................................... 38
Introduction .......................................................................................................................................... 38
Likely Significant Effects ...................................................................................................................... 38
Mitigation Measures ............................................................................................................................. 40
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Residual Effects ................................................................................................................................... 40
Summary .............................................................................................................................................. 40
11. Ground Conditions (Hydrogeology, Soils and Contaminated Land) ........................................... 42
12. Water Resources (Water Quality, Hydrology, Flood Risk and Drainage Assessment) .............. 43
13. Noise and Vibration Assessment .................................................................................................... 44
14. Air Quality Assessment .................................................................................................................... 45
15. Sustainability ..................................................................................................................................... 46
16. Non-Technical Summary .................................................................................................................. 47
Chapter 5 - Ecology and Nature Conservation .................................................................................... 47
Chapter 8 - Landscape Character and Visual Assessment ................................................................. 48
Chapter 10 - Archaeological Built and Cultural Heritage ..................................................................... 48
Tables
Table 1: Summary of mitigation and monitoring measures ....................................................................... 5
Table 2: Potential and residual effects .................................................................................................... 22
Table 3: Table of Significance – Ecology and Nature Conservation ....................................................... 23
Table 4: Significance Matrix – Landscape Character and Visual Assessment ....................................... 29
Table 5: Table of Significance – Landscape Character and Visual Assessment .................................... 35
Table 6: Significance Matrix – Archaeology, Built and Cultural Heritage ................................................ 39
Table 7: Significance Matrix – Archaeology, Built and Cultural Heritage – assessment of effects ......... 39
Table 8: Table of Significance – Archaeological, Built and Cultural Heritage ......................................... 41
Table 9: Potential and residual effects .................................................................................................... 47
Appendices
A. Location of Southern Canal Bridge Crossing - drawing ref. CIV11765-C-SA-90-008-A01
B. Southern Bridge Crossing – extent of works - drawing ref. CIV11765-C-SA-90-007-A01
C. Highways General Arrangement - drawing ref. CIV11765-C-SA-95-005-A02
D. Figures 8.1 to 8.6A – Photoviewpoint Location Plan and Photoviewpoint images
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1. Introduction
Preamble
1.1. Waterman has been appointed by the Consortium involving Barratt Homes Wales, Taylor Wimpey
and the Welsh Assembly Government (henceforth in this Document referred to as „the Consortium)
to coordinate and collate an Environmental Statement (ES) as part of the EIA process for
residential and ancillary retail and community development at a site known as South Sebastopol,
Cwmbran, Torfaen (see Site Location Plan in Appendix 1.1). The application is in outline with all
matters except means of access to Cwmbran Drive and Lowlands Crescent reserved for future
approval. Access to Oaklands Road is reserved for future approval. The ES prepared in support of
the Outline Application was submitted as part of the Application in January 2011.
1.2. This document (entitled Required Addendum to the Outline ES (Canal Crossing) forms an
addendum to the Environmental Statement (ES) submitted as part of the outline planning
application (i.e. the „Outline ES‟) for the whole of the South Sebastopol site (LPA ref. 01/P/05525).
This addendum has been prepared to consider any additional likely significant effects of the
proposed canal crossing from over the existing canal tunnel to a new location to the south. The
Site Location Plan included in Appendix 1.1 indicates the location of the canal crossing proposed in
the ES for the Outline Application and also the revised location proposed in this addendum to the
ES.
1.3. To avoid unnecessary duplication, the Chapter names and numbers in this Addendum refer to the
same Chapter names and numbers in the Outline ES. Where the content of the Addendum
Chapters remain unchanged from the original Outline ES a short note has been included in this
Addendum to confirm the same. However, specific effects in relation to the following Chapters of
the ES as a result of the new canal crossing proposals are now able to be assessed in further
detail and any mitigation that may be required in order to avoid, reduce or offset any likely
significant adverse impacts are included.
Chapter 5 - Ecology and Nature Conservation,
Chapter 8 - Landscape Character and Visual Assessment,
Chapter 10 - Archaeological Built and Cultural Heritage
1.4. Following review of the other Chapters of the Environmental Statement in support of the Outline
Planning Application it is the view of Waterman that, with the exception of the above three
Chapters and also Chapter 4 (Residual Impacts, Environmental Effects and Management) and
Chapter 16 (Non-Technical Summary), the Chapters as published remain relevant with regard to
this Addendum. Specifically, the revised Highway Route incorporating a new bridge structure
crossing the Monmouthshire / Brecon Canal does not materially affect the information contained
within the other Chapters. Consequently, other than in the case of Chapters 4, 5, 8, 10 and 16
referred to above, no amendments to the contents of the other Chapters of the Outline ES have
been made.
Legislative Background and Method Statement
1.5. Reference should be made to Chapter 1 of the outline ES in relation to issues regarding Legislative
Background and Method Statement.
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2. Project Description
The Site – Context
Site and Surroundings
2.1. Following review of Chapter 2 – Project Description of the Environmental Statement, in support of
the Outline Planning Application for the South Sebastopol Development dated January 2011 it is
considered that the Chapter as published remains relevant with regard to this Addendum.
Specifically, the revised Highway Route incorporating a new bridge structure crossing the
Monmouthshire / Brecon Canal does not materially affect the information contained within the
Chapter. In this case, no amendments to the contents of Chapter 2 of the Outline ES have been
made
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3. Project Proposal
3.1. Following review of Chapter 3 – Project Proposals, of the Environmental Statement in support of
the Outline Planning Application for the South Sebastopol Development dated January 2011, it is
considered that the Chapter as published remains relevant with regard to this Addendum.
Specifically, the revised Highway Route incorporating a new bridge structure crossing the
Monmouthshire / Brecon Canal does not materially affect the information contained within the
Chapter. In this case, no amendments to the contents of Chapter 3 of the Outline ES have been
made
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4. Residual Impacts, Environmental Effects and Management
Introduction
4.1. This chapter of the Addendum ES presents a summary of the mitigation, monitoring measures and
Residual Impacts identified through the EIA process and full details can be found in the respective
chapters in the Outline ES or this Addendum ES.
4.2. Apart from Paragraph 4.1 and Table 1 (Summary of Mitigation and Monitoring Measures) provided
below all other information contained in the Outline ES Chapter 4 are relevant.
4.3. Table 1 provides a revised summary of the mitigation and monitoring measures which results from
the recommendations in the Outline ES and this Addendum ES. The observations and
recommendations in the Addendum ES supersede those observations and recommendations in the
Outline ES.
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Table 1: Summary of mitigation and monitoring measures
ES Chapter/ Topic Potential Effect
Nature of Effect
(Permanent/ Temporary)
Significance
(Major/ Moderate/ Minor)
(Beneficial/ Adverse/ Negligible)
Mitigation/ Enhancement Measures
Residual Effects
(Major/ Moderate/ Minor)
(Beneficial/ Adverse/ Negligible)
ECOLOGY AND NATURE CONSERVATION
Construction
Designated Sites Temporary Negligible None Required Negligible
Woodland and Scrub Temporary Minor Adverse Detailed within EMP Negligible
Hedges Permanent /Temporary
Minor Adverse Detailed within EMP Negligible
Grassland Temporary Negligible None Required Negligible
Monmouthshire and Brecon
Canal
Temporary Minor Adverse Detailed within EMP Negligible
Bats Temporary Minor Adverse Detailed within EMP Minor Beneficial
Birds Permanent /Temporary
Minor Adverse Detailed within EMP Minor Beneficial
White-clawed Crayfish Temporary Minor Adverse Detailed within EMP Negligible
Otters and Water Voles Temporary Minor Adverse Detailed within EMP Negligible
Completed Development
Designated Sites Temporary Negligible None Required Negligible
Woodland and Scrub Permanent Minor Adverse Detailed within LEMP Negligible
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Hedges Permanent Minor Adverse Detailed within LEMP Negligible
Grassland Permanent Negligible None Required Negligible
Monmouthshire and Brecon
Canal
Permanent Minor Adverse Detailed within LEMP Negligible
Bats Permanent Minor Adverse Detailed within LEMP Minor Beneficial
Birds Permanent Minor Adverse Detailed within LEMP Minor Beneficial
White-clawed Crayfish Permanent Minor Adverse Detailed within LEMP Negligible
Otters and Water Voles Permanent Minor Adverse Detailed within LEMP Negligible
Cumulative Effects
During the construction and completed development stage of the development there is likely to be a cumulative effect in the local area. It is anticipated however that these impacts as a result of the scheme are minimal due to the geographical context of the site.
Permanent Negligible Site specific mitigation proposed within the EMP and LEMP
Negligible
SERVICES (UTILITIES)
Construction
As Outline ES
Completed Development
As Outline ES
Cumulative Effects
As Outline ES
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SOCIETY AND ECONOMY
Construction
As Outline ES
Completed Development
As Outline ES
Cumulative Effects
As Outline ES
LANDSCAPE CHARACTER AND VISUAL ASSESSMENT
Construction
Landscape Character
As Outline ES
Landscape Features
Brecon and Monmouthshire
Canal Direct, medium
term Minor adverse As outline ES including
specifically:
Alignment of bridge informed by arboricultural report
Erection of tree protection fencing
Adoption of CoCP
Direct, medium-term minor adverse
Visual Amenity
Brecon and Monmouthshire
Canal
Direct, medium-term
Moderate/Major adverse
As above Direct, long-term minor adverse
Five Locks Close Direct, medium-
term Major adverse As above Visual Amenity
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Bryn Farmhouse Direct, medium-
term Minor adverse As above Direct, long-term
moderate adverse
Neighbouring footpaths Direct, medium
term Moderate adverse As above Direct, long-term
moderate/major adverse
Other visual receptors as Outline ES
Completed Development
Landscape Character
Direct, long-term negligible
As Outline ES
Landscape Features
Brecon and Monmouthshire
Canal
Direct, long-term
Minor adverse As outline ES including specifically:
Cladding of bridge facade
Sensitive design and lighting
Landscaping of approach roads
Additional strengthening of boundary vegetation
Direct, long-term minor adverse
Visual Amenity
Brecon and Monmouthshire
Canal Direct, long-
term
Moderate adverse As above
Direct, long-term moderate adverse
Five Locks Close
Direct, long-
term
Moderate/Major adverse
As above Direct, long-term moderate/major
adverse
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Bryn Farmhouse
Direct, long-
term
Minor adverse As above
Direct, long-term negligible
Neighbouring footpaths
Direct, long-
term
Minor adverse As above
Direct, long-term negligible
Other visual receptors as Outline ES
Cumulative Effects
As Outline ES
TRANSPORTATION ASSESSMENT (TRAFFIC, TRANSPORT AND MOVEMENT)
Construction
As Outline ES
Completed Development
As Outline ES
Cumulative Effects
As Outline ES
ARCHAEOLOGY, BUILT AND CULTURAL HERITAGE
Construction
Canal Tunnel – Grade II Listed
(23957)
Permanent Indirect, Minor adverse
Landscape planting will minimise adverse effects on setting. Construction Management plan will limit traffic noise and dust effects.
Indirect, Minor adverse
Milepost – Grade II Listed
(80863)
Temporary Indirect, Minor adverse
Will be protected during the construction phase, unchanged thereafter.
Negligible
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Tyr-Brychiad - Grade II Listed
(80864) - not part of
development plan but adjacent
to main road into site
Permanent Indirect, Minor adverse
Landscape planting will help screen listed buildings from new development and a construction management plan will limit traffic noise and dust effects on the setting of this structure.
Negligible
Wren‟s Nest Barn – Grade II
Listed (80861) - not part of
development plan but adjacent
to main road into site
Permanent Indirect, Minor adverse
As above. Negligible
Canal – setting will be changed
along its route
Permanent Indirect, Minor adverse
Sensitive landscape design and screening. Suitable investigation where directly affected.
Direct or Indirect, Minor adverse
Hedgerows, tracks and field
boundaries
Permanent Direct, Minor adverse
Incorporated as part of design as far as possible.
Indirect, Minor adverse
Buried remains throughout the
site – potential sites
Permanent Direct, Minor to Moderate adverse
Suitable archaeological investigation prior to construction.
Minor adverse
Completed Development
As above As above As above As above As above
Cumulative Effects
No other schemes in locality contributing to a cumulative effect assessment
GROUND CONDITIONS (HYDROGEOLOGY, SOILS AND CONTAMINATED LAND)
Construction
Earthworks
As Outline ES
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Contamination
As Outline ES
Completed Development
As Outline ES
Cumulative Effects
As Outline ES
WATER RESOURCES (WATER QUALITY, HYDROLOGY, FLOOD RISK AND DRAINAGE ASSESSMENT)
Construction
As Outline ES
Completed Development
As Outline ES
Cumulative Effects
As Outline ES
NOISE AND VIBRATION ASSESSMENT
Construction
As Outline ES
Completed Development
As Outline ES
Cumulative Effects
As Outline ES
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AIR QUALITY ASSESSMENT
Construction
As Outline ES
Completed Development
As Outline ES
Cumulative Effects
As Outline ES
SUSTAINABILITY
Construction
As Outline ES
Completed Development
As Outline ES
Cumulative Effects
As Outline ES
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5. Ecology and Nature Conservation
Introduction
5.1. This addendum chapter has been written by Waterman Energy, Environment & Design Ltd
(Waterman) and identifies and evaluates the existing ecology and nature conservation resources
for development in proximity to the proposed development site at South Sebastopol. This
addendum has been prepared to consider any additional likely significant effects of the proposed
canal crossing from over the existing canal tunnel to a new location to the south (hereafter referred
to as the Site) both during the construction phase and following completion of the Development at
the site.
5.2. The chapter forms an addendum to the Environmental Statement (ES) submitted as part of the
outline planning application for the whole of the South Sebastopol site (LPA ref. 01/P/05525).
Therefore, to avoid unnecessary duplication, many of the sections within this addendum chapter
have been summarised from the original Outline ES. However, specific effects in relation to
ecology and nature conservation as a result of the new canal crossing proposals are now able to
be assessed in further detail and any mitigation that may be required in order to avoid, reduce or
offset any likely significant adverse impacts are included.
5.3. Reference should also be made to the most recent ecological reports undertaken by RSK Carter
Ecological Ltd (hereafter referred to as RSK) in 2010. The type and scope of surveys to support the
outline planning application were agreed with the Countryside Council for Wales (CCW) and
Torfaen District Council (TDC). Previous surveys undertaken by ADAS and RPS Chapman Warren
Planning and Environment (hereafter referred to as RPS) were also used to inform this
assessment.
Legislative and Planning Policy Context
5.4. Reference should be made to Chapter 5 of the outline ES in relation to the ecology and nature
conservation legislative and planning policy context, which details all relevant legislation and
planning policies.
Assessment Methodology
5.5. Ecology surveys at the South Sebastopol site have been undertaken over an approximate 10 year
period as agreed with Torfaen County Council (TCC) and the Countryside Council for Wales
(CCW). The list below therefore only lists the most up to date surveys undertaken. The assessment
methodology has comprised the following:
Undertaking of an updated ecology desk-study 2010;
Undertaking of an updated extended phase I habitat survey 2010;
Undertaking of a phase II flora and fauna surveys 2007-2010
Evaluation of the ecological value of the Site; and
Identification and evaluation of potential and residual effects.
5.6. A full description of the methodologies adopted for the relevant surveys are provided in the outline
ES (refer to Chapter 5). The ecology and nature conservation assessments followed best practice
guidance at the time of survey.
This addendum assessment is based on the following plans:
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Southern Bridge Crossing Extent of Works, Waterman (drawing ref. CIV11765-C-SA-90-007-
A01) – see appendix B;
Highways General Arrangement, Waterman (drawing ref. CIV11765-C-SA-95-005-A02) – see
appendix C; and
South Sebastopol Phase 1 Site Access Roads Southern Canal Bridge General Arrangement,
PBA (drawing ref. 11381/150/A).
Evaluation of Ecological Features
5.7. The basis for the evaluation of ecological features is provided by the 2006 Institute of Ecology and
Environmental Management (IEEM) guidelines for Ecological Impact Assessment (EcIA). These
guidelines aim to provide consistency in the approach to evaluating the importance of ecological
features and any effect that a new development would have upon them.
5.8. In accordance with the IEEM EcIA guidelines, the ecological features identified must be assigned a
value. Secondly, the effects of the relevant development should be predicted, taking into account
the different stages and activities within the development process. These identified effects must
then be assessed for their significance. The significance of the effect is a function of the value of
the ecological feature and the type and nature of the effect.
5.9. The value of ecological features is defined according to the following geographical scales:
International value;
UK value;
National value (i.e. England / Northern Ireland / Scotland / Wales);
Regional value;
County / Metropolitan value;
District / Borough value;
Local or Parish value;
Of value within the Site only; and
Negligible.
5.10. IEEMs criteria are broadly similar to those set out in Chapter 2: EIA Methodology with the terms
„Local or Parish‟ and „District / Borough‟ equivalent to the „local‟ scale, and „County / Metropolitan‟
equivalent to the „district‟ scale. The remaining geographical scales are consistent with both
methodologies.
5.11. The following factors are considered in assessing whether ecological effects are significant:
The extent of the effect;
The magnitude of the effect;
The duration of the effect;
The reversibility of the effect; and
The timing and frequency of the effect.
Evaluation of Significance
5.12. In accordance with Chapter 2: EIA Methodology, the potential and residual effects of the
Development upon identified ecological features are expressed as follows:
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Adverse: Detrimental or negative effect on a valued ecological receptor;
Negligible: No significant effect on a valued ecological receptor; and
Beneficial: Advantageous or positive effect on a valued ecological receptor.
5.13. Where adverse or beneficial effects have been identified, these are then assessed against the
following scale:
Minor: Slight, very short or highly localised effect;
Moderate: Limited effect (by extent, duration or magnitude) which may be considered
significant; and
Substantial: Considerable effect (by extent, duration or magnitude) of more than local
significance or in breach of recognised acceptability, legislation, policy or standards.
5.14. A „valued‟ ecological receptor has been defined as any receptor valued at the Assessment Site
level or above, in accordance with the geographical scales provided above.
5.15. In accordance with IEEM guidelines, where activities associated with the Development could result
in the intentional killing or injury of protected species, this is stated and a level of significance is not
given. This is because such killing or injury must be avoided by law. For other activities that could
lead to an offence but may be permissible under licence or agreement with a government body, the
significance of the effect is assessed according to the significance criteria described previously.
Consultation
5.16. As previously stated consultation with agreement on the scope of the ecological surveys at the Site
and the master plan design have been undertaken with the local Countryside Council for Wales
(CCW) office and Torfaen Borough Council (TBC) throughout the life of the project dating back to
1999.
Baseline Conditions
5.17. The baseline conditions of the site remain as those set out within the outline ES where appropriate
at the Site of the new canal crossing. Reference should be made to the baseline section of Chapter
5.
Potential Effects
5.18. This section considers the effects of the proposals for the new canal crossing on the ecological and
nature conservation of the Site throughout the life-cycle of the development, from construction to
operational phase.
Demolition and Construction
5.19. The Site of the new canal crossing has the potential to result in a number of ecological effects.
Those relevant to the Site include:
Land take and associated habitat loss;
Disturbance due to construction operations, including noise, dust, vibration and changing
habitats throughout construction;
Changes in the pattern of human activity and associated disturbance and/or damage;
Creation of barriers or other obstacles affecting the movement of wildlife;
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Creation of additional habitat for species favouring the urban environment.
5.20. The significance of these potential effects from the new canal crossing is assessed in the following
section. Effects are assessed against the current baseline conditions.
Designated Sites
5.21. There are considered to be no likely effects on any statutory and non-statutory sites owing to their
sufficient separation from the demolition and construction works. It is therefore considered that
there will be a negligible effect on designated sites during the demolition and construction stage.
Woodland and Scrub
5.22. The proposed new canal crossing would retain the existing areas of broadleaved semi-natural
woodland and adjacent scrub habitats to the south. However, in the absence of mitigation
measures, demolition and construction works adjacent to this habitat to the south would result in an
increase in dust, noise and vibration and would result in a temporary, local potential effect of
minor adverse significance to this habitat.
Hedges
5.23. The proposed new canal crossing would cause the loss of approximately 70m of hedgerow –
approximately 35m from each bank running along the canal corridor. The hedgerows to be
severed are however not notable species rich hedgerows that resemble Torfaen local BAP habitat.
In addition, and in the absence of mitigation measures, demolition and construction works to
adjacent hedgerows would result in an increase in dust, noise and vibration. The impacts on
hedgerows during the demolition and construction phase would therefore result in a temporary
and permanent, local potential effect of minor adverse significance to this habitat.
Grassland
5.24. The proposed new canal crossing would result in the loss of 9,900 m2 of grassland. The grassland
habitat to be lost however is grazed agricultural pasture and does not resemble grassland of
UKBAP and Torfaen local BAP value. In addition and in the absence of mitigation measures,
demolition and construction works to adjacent grassland would result in an increase in dust, noise
and vibration. The immediate adjacent grassland however is not of UKBAP and Torfaen local BAP
value. The impacts on grasslands during the demolition and construction phase would therefore
result in a negligible impact.
Monmouthshire and Brecon Canal
5.25. The proposed new canal crossing would result in an additional road crossing of the canal and over
shading of a small section of habitat as a clear span bridge is proposed. In the absence of
mitigation measures, demolition and construction works adjacent to this habitat would result in an
increase in dust, noise and vibration and would result in a temporary, local potential effect of
minor adverse significance to this habitat.
Bats
5.26. The proposed new canal crossing would removal a total of approximately 70m of hedgerows
running along the canal during the demolition and construction stage (approximately 35m on each
bank). However, the proposed open span bridge would provide a structure on which bats can
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echolocate off and continue to commute along the canal. The retained adjacent habitat also
provide excellent green infrastructure for this species across and bordering the Site. In the absence
of mitigation measures, demolition and construction works would create an increase in dust, noise
and vibration and would result in a temporary, county potential effect of minor adverse
significance.
Birds
5.27. The proposed new canal would remove a total of approximately 70m of bird nesting habitat.
However, the retained habitats provide excellent green infrastructure for this species across and
bordering the Site. In the absence of mitigation measures, demolition and construction works would
create an increase in dust, noise and vibration and would result in a permanent and temporary,
county potential effect of minor adverse significance.
White-clawed crayfish
5.28. The proposed new canal crossing would not directly impact on any habitats currently used by
white-clawed crayfish. However, the stream to the south of the Site contains a breeding population
of white-clawed crayfish and there would be an increased risk in the spread of signal crayfish
plague spreading into the canal and this stream, due to vehicle and human movement in the area.
In the absence of mitigation measures, demolition and construction works would create an increase
in dust, noise, vibration and pollution run off into the canal that connect to white-clawed crayfish
habitat. This would result in a temporary, county potential effect of minor adverse significance.
Otters and Water voles
5.29. The proposed development would result in an additional road crossing of the canal and over
shading of a small section of habitat as a clear span bridge is proposed. Given the bridge design it
would not cause any barriers to otter dispersal. In the absence of mitigation measures, demolition
and construction works would create an increase in dust, noise, vibration and pollution run off into
water bodies. Taken the above it is considered that the reinstatement of the stream would be of a
positive impact. This would result in a temporary, district potential effect of minor adverse
significance.
5.30. The Site is considered to be of negligible value to water voles given the survey and consultation
work undertaken. It is therefore anticipated that the demolition and construction phase would give
rise to potential effects of negligible significance to water voles.
Completed Development
Designated Sites
5.31. As previously noted, it is considered that there will be no likely effects on any statutory and non-
statutory sites. As such it is considered that the operation of the proposed development would also
result in a negligible effect on designated sites.
Woodland and Scrub
5.32. The woodland and adjacent scrub habitat to the south is considered to be of district ecological
value and would be retained during demolition and construction. However, in the absence of
mitigation, as a result of the new canal crossing there is likely to be an increase in human pressure
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and traffic and human movements adjacent to the woodland. The effect of the completed
Development on this habitat would be of permanent district minor adverse significance.
Hedges
5.33. The hedgerows to be severed are not notable species rich hedgerows that resemble Torfaen local
BAP habitat. In the absence of mitigation will result in the reduction of this habitat on Site. As such
it is considered that the effect of the completed Development on this habitat would be of
permanent local minor adverse significance.
Grassland
5.34. The impacts on grasslands during the demolition and construction phase is negligible and as such
is considered to be negligible during the completed development phase.
Monmouthshire and Brecon Canal
5.35. The proposed new canal crossing would result in an additional road crossing of the canal and over
shading of a small section of habitat as a clear span bridge is proposed. In the absence of
mitigation, as a result of the development there is likely to be an increase in human and vehicle
pressure on the canal. The effect of the completed Development on this habitat would be of
permanent local minor adverse significance.
Bats
5.36. The proposed new canal crossing would sever a total of approximately 70m of hedgerows running
along the canal (approximately 35m on each bank). The proposed open span bridge would provide
a structure on which bats can echolocate off and continue to commute along the canal. The
retained adjacent habitat also provide excellent green infrastructure for this species across and
bordering the Site. However during the operational stage of the development it is considered that
there would be an increase in lighting, human and vehicle disturbance. In addition in the absence
of mitigation there would also be loss of foraging habitat of ecologically poor hedgerows and
grassland. As such the effect of the completed Development on this species would be of
permanent county minor adverse significance.
Birds
5.37. The proposed new canal would remove a total of approximately 70m of bird nesting habitat. The
retained habitats provide excellent green infrastructure for this species across and bordering the
Site. However, during the operational stage of the development it is considered that there would be
an increase in lighting, human and vehicle disturbance. In addition in the absence of mitigation
there would also be loss of and foraging and nesting habitat (hedgerows only) of ecologically poor
hedgerows and grassland. As such the effect of the completed Development on this species would
be of permanent county minor adverse significance.
White-clawed crayfish
5.38. The proposed new canal crossing would not directly impact on any habitats currently used by
white-clawed crayfish during the completed development phase. However, during the operational
stage of the development it is considered that there would be an increase in lighting human and
vehicle disturbance on the stream. This level of disturbance is likely to be very minimal given the
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steep sided banks and poor accessibility of the crayfish stream to the south east of the Site.
However there would be an increased risk in the spread of signal crayfish plague due to increased
human and vehicle activity in the area. As such the effect of the completed Development on this
habitat would be of permanent local minor adverse significance.
Otters and Water voles
5.39. The proposed development would result in an additional road crossing of the canal and over
shading of a small section of habitat as a clear span bridge is proposed. Given the bridge design it
would not cause any barriers to otter dispersal. However, in the absence of mitigation during the
operational stage of the development, it is considered that there would be an increase in lighting,
human and vehicle disturbance. As such the effect of the completed Development on this habitat
would be of permanent district minor adverse significance.
5.40. The ecological value of the Site for water voles is considered negligible based on the survey work
undertaken. Therefore the potential effects of the completed Development on this habitat would be
of negligible significance.
Mitigation Measures and Recommendations
5.41. This section provides a summary of mitigation measures which would be implemented in order to:
Avoid, mitigate and compensate for the identified potential adverse effects;
Ensure that all works comply with relevant nature conservation legislation; and
Promote biodiversity on the Site.
5.42. The mitigation proposals set out below describe additional mitigation measures which would be
implemented during the demolition and construction and operational phases of the Development.
Demolition and Construction
Environmental Management Plan
5.43. Demolition and site clearance works would be undertaken outside the main bird breeding season
where practicable (i.e. only during September to February inclusive). If these works cannot be
restricted to within this period, an Ecological Watching Brief would be maintained during the main
bird breeding season to ensure that no nesting birds were adversely affected. This would entail
checking all suitable habitats for nesting birds by a suitably qualified ecologist prior to the
commencement of works.
5.44. It is recommended that low level lighting is used during demolition and construction works,
particularly in areas adjacent to broadleaved woodland.
5.45. An Environmental Management Plan (EMP) would ensure that appropriate environmental controls
would be implemented during the demolition and construction works. The EMP would be in
accordance with relevant British Standards Best Practice Guidelines and would include ecological
mitigation such as:
Tree protection measures including protective fencing around the root zones of retained trees,
woodlands and hedgerows during construction to prevent damage from compaction;
Lighting would be controlled in order to ensure there is minimal light spill on to the canal,
broadleaved woodland and connecting features to minimise any potential impacts on foraging or
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commuting bats, otters and other wildlife;
Protection of the retained grassland areas from encroachment of the works through appropriate
fencing;
Protection of the stream to the south from encroachment of works via a suitable fenced buffer;
Measures to prevent the possible spread of signal crayfish disease via control checks of
equipment and machinery on Site, as native white-clawed crayfish Austropotamobius pallipes
are present to the stream to the south;
Measures to minimise dust arising during demolition and construction would, when necessary,
include regular damping down of the Site by spraying with water; and
The EMP would be agreed with TBC and CCW prior to the commencement of demolition and
construction works on the Site, and would be a condition of contract for all contractors.
Proposed Landscape Strategy
5.46. The proposed soft landscape strategy around the new canal crossing would seek to create new
habitats to buffer the canal, and provide continuous vegetation links and buffers for wildlife linking
as far as the open span bridge. This would be done using native species and/or species of benefit
to wildlife indicative of the local area. The western bank in particular will be enhanced to provide
potential layup site for otters. The area under the bridge on the western bank will be fenced off to
prevent human disturbance and landscape planting will be designed to provide a secluded area for
otters.
Proposed Nesting/Roosting Opportunities
5.47. Artificial bat roosting opportunities could be provided as part of the new canal crossing on both
sides of the structure itself.
Completed Development
Landscape and Ecological Management Plan
5.48. The landscape and ecological value of the Site would be enhanced by implementing management
regimes on the retained and created habitat on and adjacent to the new canal crossing works area.
These management regimes would be detailed in a Landscape and Ecological Management Plan
(LEMP) for the operational Development. The LEMP would also detail measures to be
implemented to minimise human and vehicle disturbance to habitats, for example:
Existing pathways would be clearly delineated to avoid trampling;
Design and Implementation of a lighting strategy would be undertaken to minimise impacts on
nocturnal species such as bats and otters;
Buffer planting and fencing to prevent human access to the western bank under the new canal
crossing. To provide potential layup sites of otters and foraging and commuting habitat for bats.
Residual Effects
5.49. Residual effects are those remaining effects following the success implementation of mitigation
measures outlined above. It is considered that many local impacts can be reduced as a result of
successful mitigation, particularly during construction.
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5.50. The table at the end of this chapter summarises the significance of effects and residual effects for
both construction and completed development respectively.
Cumulative Effects
5.51. In the local area there are two planning application as part of the Avesta scheme that are
considered likely to have cumulative effects on ecology during the construction and completed
development stage of the scheme. A full application is currently being processed and an approved
reserved matters application has been approved these are for:
10/P/00542(W) – full application – “residential let mixed use development comprising
apartments and housing (amended scheme)” – not yet determined (Barratt Homes)
10/P/00033(W) – reserved matters application – “reserved matters for 209 dwellings” –
approved 31st August (Persimmon Homes)
5.52. In addition to the Avesta scheme, the remainder of the outline application for Sebastopol (LPA
ref01/P/05525) is also considered as part of the cumulative assessment.
5.53. During the construction and completed development stage of the development there is likely to be
a cumulative effect on ecology within the local area. It is anticipated however that these impacts as
a result of the scheme are minimal due to the size of the Site area for the proposed canal crossing,
geographical context of the site, separation caused by the A4051 and best practice and Site
specific mitigation proposed within the EMP and LEMP. During construction and completed
development stage the cumulative effects would be associated with:
Land take and associated habitat loss;
Disturbance due to construction operations, including noise, dust, vibration and changing
habitats throughout construction;
Changes in the pattern of human activity and associated disturbance and/or damage;
Creation of barriers or other obstacles affecting the movement of wildlife;
Creation of additional habitat for species favouring the urban environment.
Summary
5.54. A comprehensive sweep of ecological surveys have been undertaken at and adjacent to the Site
(type and scope agreed with CCW and TBC) have concluded that the Site is currently of negligible
to County ecological value.
5.55. Though there would be change to the existing habitats of ecological value at the Site as a result of
the Development of the new canal crossing, the extent and nature of the proposed enhancement
inherent to the Development design and additional mitigation including the production of an
Ecological Management Plan during construction and a Landscape and Ecological Management
plan post construction would result in a negligible and beneficial effect to the biodiversity of the
Site. This would include the introduction of habitats whilst protecting the existing species of
ecological value.
5.56. A number of potential and residual effects have been identified for the demolition and construction
phases of the Development and once the Development is completed and operational. These are
summarised below in the Table below.
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Table 2: Potential and residual effects
Issue Potential Effect / Significance
Mitigation Measures Residual Effect / Significance
Demolition and Construction
Designated Sites Negligible None Required Negligible
Woodland and Scrub Minor Adverse Detailed within EMP Negligible
Hedges Minor Adverse Detailed within EMP Negligible
Grassland Negligible None Required Negligible
Monmouthshire and Brecon Canal
Minor Adverse Detailed within EMP Negligible
Bats Minor Adverse Detailed within EMP Minor Beneficial
Birds Minor Adverse Detailed within EMP Minor Beneficial
White-clawed Crayfish Minor Adverse Detailed within EMP Negligible
Otter and Water Voles Minor Adverse Detailed within EMP Negligible
Completed Development
Designated Sites Negligible None Required Negligible
Woodland and Scrub Minor Adverse Detailed within LEMP Negligible
Hedges Minor Adverse Detailed within LEMP Negligible
Grassland Negligible None Required Negligible
Monmouthshire and Brecon Canal
Minor Adverse Detailed within LEMP Negligible
Bats Minor Adverse Detailed within LEMP Minor Beneficial
Birds Minor Adverse Detailed within LEMP Minor Beneficial
White-clawed Crayfish Minor Adverse Detailed within LEMP Negligible
Otter and Water Voles Minor Adverse Detailed within LEMP Negligible
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Table 3: Table of Significance – Ecology and Nature Conservation
Potential Effect Nature of Effect
(Permanent/ Temporary)
Significance (Major/ Moderate/
Minor) (Beneficial/ Adverse/
Negligible)
Mitigation/ Enhancement Measures
Geographical Importance*
Residual Effects (Major/ Moderate/
Minor) (Beneficial/ Adverse/
Negligible) I UK W R C D L
Construction
Designated Sites Negligible Negligible None Required Negligible
Woodland and Scrub Temporary Minor Adverse Detailed within EMP * Negligible
Hedges Temporary and Permanent
Minor Adverse Detailed within EMP *
Negligible
Grassland Temporary and Permanent
Negligible None Required *
Negligible
Monmouthshire and Brecon Canal Temporary Minor Adverse Detailed within EMP * Negligible
Bats Temporary and Permanent
Minor Adverse Detailed within EMP *
Minor Beneficial
Birds Temporary and Permanent
Minor Adverse Detailed within EMP *
Minor Beneficial
White-clawed Crayfish Temporary Minor Adverse Detailed within EMP * Negligible
Otter and Water Voles Temporary Minor Adverse Detailed within EMP * Negligible
Completed Development
Designated Sites Negligible Negligible None Required Negligible
Woodland and Scrub Permanent Minor Adverse Detailed within LEMP * Negligible
Hedges Permanent Minor Adverse Detailed within LEMP * Negligible
Grassland Permanent Negligible None Required * Negligible
Monmouthshire and Brecon Canal Permanent Minor Adverse Detailed within LEMP * Negligible
Bats Permanent Minor Adverse Detailed within LEMP * Minor Beneficial
Birds Permanent Minor Adverse Detailed within LEMP * Minor Beneficial
White-clawed Crayfish Permanent Minor Adverse Detailed within LEMP * Negligible
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Otter and Water Voles Permanent Minor Adverse Detailed within LEMP * Negligible
Cumulative Effects
During the construction and completed development stage of the development there is likely to be a cumulative effect in the local area. It is anticipated however that these impacts as a result of the scheme are minimal due to the geographical context of the site.
Permanent Negligible Site specific mitigation proposed within the EMP and LEMP
Negligible
* Geographical Level of Importance
I = International; UK = United Kingdom; W = Wales; R = Regional; C = County; D = District; L = Local
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6. Services (Utilities)
6.1. Following review of Chapter 6 – Services (Utilities), of the Environmental Statement in support of
the Outline Planning Application for the South Sebastopol Development dated January 2011, it is
the view of Waterman Transport and Development that the Chapter as published remains relevant
with regard to this Addendum. Specifically, the revised Highway Route incorporating a new bridge
structure crossing the Monmouthshire / Brecon Canal does not materially affect the information
contained within the Chapter. In this case no amendments to the contents of Chapter 6 of the
Outline ES have been made.
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7. Society and Economy
7.1. Following review of Chapter 7 – Society and Economy of the Environmental Statement in support
of the Outline Planning Application for the South Sebastopol Development dated January 2011, it is
the view of Asbri Planning that the Chapter as published remains relevant with regard to this
Addendum. Specifically, the revised Highway Route incorporating a new bridge structure crossing
the Monmouthshire / Brecon Canal does not materially affect the information contained within the
Chapter. In this case no amendments to the contents of Chapter 7 of the Outline ES have been
made.
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8. Landscape Character and Visual Assessment
Introduction
8.1. This addendum chapter has been written by Waterman Energy, Environment & Design Ltd
(Waterman) to form an addendum to Chapter 8 of the outline Environment Statement (ES) (LPA
ref. 01/P/05525) following amendments to the outline proposals as a result of the relocation of the
southern bridging point over the Brecon and Monmouthshire Canal. Therefore, to avoid
unnecessary duplication, many of the sections within this addendum chapter have been
summarised from the original outline ES. However, specific effects in relation to landscape and
visual amenity as a result of the relocation of the bridge are assessed in further detail for both
construction and operational phases. Mitigation measures that may be required in order to avoid,
reduce or offset any likely significant adverse impacts that may arise to landscape and visual
receptors is also suggested. The red line boundary of the bridging point and extent of works is
shown within Waterman drawing C-SA-90-007-A01 and hereafter referred to as „the site‟.
8.2. Reference should also be made to the arboricultural survey report of the site, produced by
Waterman (ref. E11338-R-2-2-2-101212-BC) in accordance with BS5837:2005 – „Trees In Relation
To Construction‟ and submitted as part of the outline planning application documentation.
Planning Policy Context
8.3. Reference should be made to Chapter 8 of the outline ES and its accompanying Figure 8.1 in
relation to the landscape and visual planning policy context, which details relevant policies from
nation to local level.
8.4. However, of particular pertinence is Policy S2 which designates the site (and areas beyond) as a
General Development Area (ref. S2/2 South Sebastopol). This designation essentially allocates the
land for development and development proposals within this area will be permitted provided they
are in accordance with policy framework of the local plan that seek to protect the integrity of
landscape character and visual amenity of the area, particularly that of the Canal and uplands.
8.5. In additional to local plan policies the adopted South Sebastopol Development Framework (2004)
provides ad hoc guidelines for development of the GDA. Development should seek to:
Make best use of existing features such as woodlands, tree-lined hedgerows, streams and the
canal;
Give residents a sense of place and belonging;
Maintain and enhance the existing character and recreational value of the canal;
Create open space corridors and areas of focal open space throughout the site;
Retain where possible existing important views and create new focal points within the
landscape;
Where possible maintain the alignment of existing public rights of way; and
Reinforce new linkages with surrounding communities.
8.6. The importance and further potential of the canal as a recreational resource is recognised within
Torfaen Local Plan which encourages enhancement of its recreational amenity under policies L5
and L7.
8.7. It is also of note that the Canal is earmarked as a proposed conservation area although this
aspiration has not yet been formally recognised within planning policy to date.
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Other Statutory Designations
Public Rights of Way (PRoW)
8.8. A National Cycle Route also follows the Canal towpath north to south through the site whilst two
footpaths are present to the north of the site.
Tree Preservation Orders (TPOs)
8.9. There are no TPOs present within the site.
Listed Buildings
8.10. There are no listed buildings or structures within the site. The closest listed structures is the Canal
tunnel and milepost, both Grade II listed, approximately 50m to the north.
Assessment Methodology
8.11. The assessment methodology for the landscape and visual assessment follows best practice as set
out by the Countryside Agency, Landscape Institute and Institute of Environmental Management
and Assessment as detailed in the outline ES (refer to Chapter 8).
8.12. The addendum assessment is based on the following drawings:
Southern Bridge Crossing Extent of Works, Waterman (drawing ref. CIV11765-C-SA-90-007-
A01) – see appendix B;
Highways General Arrangement, Waterman (drawing ref. CIV11765-C-SA-95-005-A02) – see
appendix C; and
South Sebastopol Phase 1 Site Access Roads Southern Canal Bridge General Arrangement,
PBA (drawing ref. 11381/150/A).
Significance Criteria
8.13. The significance of landscape and visual effects are determined by assessing:
The sensitivity of the affected landscape;
The sensitivity of the visual receptor; and
The magnitude of the potential change that will occur.
8.14. Effects may be adverse or beneficial, the significance of which (including residual impacts following
mitigation measures) is shown graphically as a significance matrix in Table 5 using the following
definitions:
Minor – an effect which on its own is likely to have a minor influence on decision making but
when combined with other effects could have a more material influence;
Moderate – an effect which on its own could have some influence on decision making,
particularly when combined with other similar effects; or
Major – an effect which in isolation could have a material influence on the decision making
process.
8.15. In addition, the term negligible is used to describe impacts that would cause very limited changes
to the landscape and/or views, but creates no significant impact.
8.16. The nature of effect is also assessed as being either short-term (less than 5 years), medium-term
(5 - 10 years) or long-term (10 years plus) in timescale. All landscape and visual effects are
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considered to be direct (i.e. a direct consequence of the Development proposals).
8.17. The assessment of the nature of landscape and visual effects will depend on the degree to which
the Development:
Complements, respects and fits into the existing scale, landform and pattern of landscape
context;
Enables enhancement, restoration or retention of the landscape character and visual amenity;
Affects strategic and important views in addition to the visual context of receptors; and
Meets landscape and visual policy aspirations for the area.
Table 4: Significance Matrix – Landscape Character and Visual Assessment
8.18. In addition, the term negligible is used if the development would cause very limited changes to the
landscape and/or views, but creates no significant impact.
Baseline Conditions
8.19. The baseline conditions of the site remain as those set out within the outline ES. Reference should
be made to the baseline section of Chapter 8 and associated Figures 8.3 to 8.18. A short
description specific to the site is also provided below.
8.20. The site is located in the south of the Sebastopol outline application area, approximately 10-20m
north of Five Locks Close. It comprises of the Brecon and Monmouthshire Canal, a small section of
its tree-lined banks and hedgerows and two small areas of rough pastoral grassland beyond. The
sense of enclosure as result of vegetation is strong. The presence of built form at Five Locks Close
is also discernible owing to its proximity.
Likely Evolution of the Baseline
8.21. In landscape and visual terms, the site is likely to remain relatively unchanged in the near future.
However, the designation of the site and wider area between Cwmbran and Sebastopol as a
General Development Area (GDA) within the Torfaen Local Plan means that its development,
resulting in substantial change to the character and visual amenity, is likely in the future.
Likely Significant Effects
8.22. This section considers the effects of the relocation of the bridge on the landscape character and
Sensitivity / Value of
Receptor
Magnitude of Effect
High Medium Low
High
(Wales/UK/International designation/private residents)
Major Major/ Moderate Moderate
Medium
(County/Regional designations/PROW/Outdoor
Recreation)
Major/ Moderate Moderate Moderate/ Minor
Low
(Local/District designations/ Local Road Users)
Moderate Moderate/ Minor Minor
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visual amenity of the receiving environment, from construction to operational phase. The
assessment also identifies the timescale over which these effects will occur, their direct or indirect
nature as well as their potential reversibility. The significance of impact has been identified using
the methodology detailed above and the matrices contained within Table 5. It should be noted that
the all impact significances identified within this section are before the implementation of mitigation
measures. All other impacts will remain as those detailed within the outline ES unless explicitly
stated otherwise.
8.23. In order to support this addendum, additional photoviewpoint locations (A-F) have been identified
and assessment specific to the bridge relocation and should be referred to when reading this
section. The location of these is shown within Figure 8.1 with the corresponding photosheets in
Figures 8.2 – 8.6.
Construction
8.24. The effects of demolition, site preparation works and construction activities are assessed below
and have the potential to affect the landscape character and visual amenity of the site and its
environs in the following ways:
Removal of vegetation along the Canal at crossing point;
Ground excavation works, including levelling and cut and fill activities for approach road to the
crossing;
Movement of heavy plant and material both within and to site;
Erection of construction infrastructure (e.g. scaffolding and mobile cranes) and siting of workers
welfare facilities; and
Construction of new bridge structure.
8.25. The effects identified for the construction phase are short-term in nature, lasting for less than five
years although it should be noted that the construction of the bridge itself will be seen as part of
construction within the wider area as part of the built of the outline site area. Demolition and
construction effects are generally considered to be reversible in landscape and visual terms.
However, some impacts, such as the removal of trees and hedgerows are considered to be
permanent.
Landscape Features
Brecon and Monmouthshire Canal
8.26. The Canal at present is a relatively tranquil and rural environment, forming an attractive aquatic
feature through the spine of the Sebastopol area. Construction of the relocated bridge will,
inevitably, result in the removal of a small section of vegetation lining the eastern and western
banks of the Canal (although this would also be necessary if the existing tunnel crossing was
used). The re-profiling of ground adjacent to the bridge crossing will also cause some intrusion to
character, both visually and audibly. However, owing to the relatively small extents of works
entailed (in relation to the Canal as a whole) and the enclosure of the Canal, disruption, although
substantial in nature, will be limited to the local environs of the bridge. The overall character of the
Canal is therefore unlikely to experience any significant increase in impact on character above and
beyond that identified within the outline ES as a result of the relocation of the bridge. Thus impacts
will be direct, medium-term of minor adverse significance.
8.27. All other impacts to character during construction remain as those detailed within Chapter 8 of the
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outline ES.
Visual Amenity
8.28. As with any new bridging point, construction of the relocated bridge is likely to result in substantial
visual intrusion. In relation to construction within the wider Sebastopol application area this is
relative small, nonetheless the erection of a new structure across the Canal will have considerable
local visual impacts. However, owing to the enclosure of the Canal by adjacent vegetation, this will
be limited to the near vicinity. For the approach roads to the bridge, construction beyond the Canal
will be prominent, particularly from properties in the northeast of Five Locks Close that back on to
Sebastopol outline application area although fortunately these works are not extensive in nature.
Views from the Canal (photoviewpoints A, B and C)
8.29. Construction will be visible from the Canal towpath where it is likely to form a notable feature, the
prominence of which will depend on proximity. The alignment of the Canal creates a long vista
(photoviewpoint A) northward from Five Locks Road although the actual visibility of the bridge at
the this distance will be limited as a result of intervening built form and vegetation. Close to the
bridging point (photoviewpoint B) construction will be highly visible causing considerable intrusion.
Views of construction to the north of the bridging point will also be prominent, however they quickly
become obscured by the curvature of the Canal (photoviewpoint C). Importantly, no view of
construction will be possible from the Canal tunnel itself. Consequently, in is concluded that visual
impacts will be largely limited to approximately 40m north and 60m south of the actual bridging
point. The construction of the new bridging point will cause disturbance to the visual amenity of the
Canal although these are no considered to be significantly greater that those that would arise if the
existing Canal tunnel crossing was used. The impacts to the visual amenity of the Canal are
therefore concluded to remain as direct, medium-term in nature of moderate/major adverse
significance.
Five Locks Close (photoviewpoint B)
8.30. Properties that back on to the Sebastopol outline application that will have the clearest view of
construction. All of these properties are buffered by intervening back gardens and, owing to their
low gable roofs, windows overlooking the site tend to be skylights or small apertures. Nonetheless
construction of the bridge will be prominent, particularly from those dwellings in the far northeast of
Five Locks Close leading to direct, medium-term impacts of major adverse significance.
However, the majority of these dwellings will be unaffected.
Bryn Farmhouse (photoviewpoint F)
8.31. The elevated position of Bryn Farmhouse allows panoramic views over the Afon Lwyd valley. The
Canal is largely sequestered amongst the vegetation and undulations of the area (photoviewpoint
F) and construction of the relocated bridge will be largely hidden from view, with only construction
of the western approach road being discernible. The relocation of the bridge is considered not to
result and additional impact to the visual amenity of this property and as such impacts are
concluded to be direct, medium-term of minor adverse significance. It is also worthy of note
that relocation of the bridge is largely likely to be lost amongst the buildout of the Sebastopol site.
Neighbouring Footpaths (photoviewpoint D and E)
8.32. Intervening vegetation and undulating topography largely screens views of construction from
neighbouring footpaths (photoviewpoint E). Views of construction of the eastern approach road will
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be visible from the footpath from the Canal to Wren‟s Nest Farm (photoviewpoint D) where it will be
form a notable feature of the view. Overall the relocation of the bridge is concluded to result in
direct, medium term impacts of moderate adverse significance and will largely be lost amongst
the build out of the Sebastopol site.
Completed Development
8.33. The completed development will see the erection of a new bridge over the Brecon and
Monmouthshire Canal in the south of the outline application area. This will comprise a two lane
open span bridge with associated approach road, lighting and landscaped areas. The towpath will
remain adjacent to the east bank of the Canal.
Landscape Features
Brecon and Monmouthshire Canal
8.34. The relocation of the bridge will create a prominent, new feature within the character of the Brecon
and Monmouthshire Canal. However, provided the design and façade of the bridge is sensitive to
the Canal and its setting, it is concluded that there is no reason why the bridge cannot be
assimilated successfully into this context. The increase in traffic and lighting will, inevitably result in
some minor increase in intrusion to the rurality of the Canal although this is not considered to be
significantly harmful. Consequently, the impact to the character of the Brecon and Monmouthshire
Canal as a result of the relocation of the bridge is assessed to be direct, long-term of minor
adverse significance.
8.35. All other impacts to character as a result of the completed development remain as those detailed
within Chapter 8 of the outline ES.
Visual Amenity
8.36. In visual terms, the completed development will create a prominent new feature in local views of
the Canal. However, the bridge itself will be largely screened from view beyond the Canal by
intervening vegetation and undulating topography, with only the lighting and landscaped areas of
the approach road visible. As with character, provided sensitive design, there is no reason why the
bridge should appear incongruent or alien to the Canal environment although it will be substantially
bigger than other crossings currently extant within the Sebastopol application area.
Views from the Canal (photoviewpoints A, B and C)
8.37. The relocation of the bridge will create a substantive new feature in views from the Canal, the
prominence of which will depend on proximity. In middle distance views (photoviewpoint A) the
bridge is likely to be largely inconspicuous, sequestered amongst the vegetation lining the Canal.
However in close proximity (photoviewpoints B and C) it will dominate the composition. The
structure of the bridge will also result in the loss of the long vista from photoviewpoint C along the
Canal to Five Locks Road. Owing to the curvature of the Canal views from the Canal tunnel will not
be possible. Although the loss of the vista is considered detrimental, changes to the view are
localised relative to the full length of the Canal. Therefore direct, long-term impacts of moderate
adverse significance will occur to receptors of views from the Canal.
Five Locks Close (photoviewpoint B)
8.38. Views of the bridge will also be prominent in views from Five Locks Close although only dwellings
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in the northeast that back on to the Sebastopol application area will be affected. It is also of note
that new dwellings are proposed adjacent to Five Locks Close which will effectively screen views of
the bridge. There will some additional intrusion as a result of increased traffic and lighting but
provided sensitive design these should be nominal. Impacts will therefore be direct, long-term of
moderate/major adverse significance for those dwellings backing onto the site although the
majority of properties at Five Locks Close will not be affected.
Bryn Farmhouse (photoviewpoint F)
8.39. As with views from Five Locks Close, views from Bryn Farmhouse are more likely to be drawn to
the build out of the site rather than that of the relocation of the bridge. The bridge itself will be
largely indiscernible although the western approach road will be visible for a short period until build
out of the Sebastopol site is complete. Impacts to the visual amenity will therefore remain as
identified within the outline assessment as direct, long-term of minor adverse significance.
Neighbouring Footpaths (photoviewpoint D and E)
8.40. The eastern approach road will be visible from photoviewpoint D although the western is largely
screened from photoviewpoint E. In additional, intervening built form of the Sebastopol site will
eventually completely screen views of the relocated bridge from these footpaths. The significance
of impact for visual receptors on these paths is therefore concluded to be direct, long-term minor
adverse significance.
Mitigation Measures
8.41. The following mitigation measures are suggested for the construction phase and completed
development for the relocation of the bridge and should be employed to reduce adverse landscape
and visual effects where they occur, as identified during the course of this assessment.
Construction
8.42. The following mitigation measures should be adopted to reduce adverse impacts as a result of the
construction phase:
Adoption of Code of Construction Practice (CoCP) to ensure good site management and house-
keeping;
Sensitive siting of welfare facilities, plant and material storage areas;
Erection of protective fencing in accordance with BS5837 – Trees in Relation to Construction
around areas of important retained vegetation; and
The exact alignment of the bridge should be informed by the arboriculture report to avoid the
removal of mature tree specimens and hedgerow where possible.
Completed Development
8.43. The following mitigation measures should be adopted to reduce adverse impacts as a result of the
completed development:
Insistence on sensitive, high design of the bridge to respect the character of the Canal and local
context;
Use of local stone cladding to reflect vernacular of existing bridging structures elsewhere along
the Canal;
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Landscaping of approach roads to aid integration and provide important green links for ecology;
Sensitive positioning of lighting to avoid light spill into adjacent areas;
Strengthening of vegetative boundaries to Canal where appropriate to offset for that removed.
Residual Effects
8.44. Residual effects are those remaining effects following the success implementation of mitigation
measures outlined above. It is considered that many local impacts can be reduced as a result of
successful mitigation, particularly during construction.
8.45. Table 6 at the end of this chapter summarises the significance of effects and residual effects for
both construction and completed development respectively
Cumulative Effects
8.46. The relocation of the bridge is not considered to result in any changes to the impacts to landscape
and visual receptors as identified within the outline ES.
Summary
8.47. The relocation of the bridge is envisaged in the south of the Sebastopol outline application area,
approximately 10-20m north of Five Locks Close. It comprises of the Brecon and Monmouthshire
Canal, its tree-lined banks and hedgerows with rough pastoral grassland beyond.
8.48. The relocation of the bridge will result in increased visual and audible intrusion during the
construction phase, However, the extent of these impacts is relatively limited to approximately
within a 100m stretch of the Canal owing the enclosure of the Canal and the vegetation that lines it.
Although impacts will be more apparent locally, they are not considered to result in an increase in
significance from those detailed within the outline ES in relation to the Sebastopol as a whole.
8.49. The relocation of the bridge will create a prominent, new feature within Brecon and Monmouthshire
Canal. However, provided the design and façade of the bridge is sensitive to the Canal and its
setting, it is concluded that there is no reason why the bridge cannot be assimilated successfully
into this context. The increase in traffic and lighting will, inevitably result in some minor increase in
intrusion to the rurality of the Canal although this is not considered to be significantly harmful.
8.50. The structure of the bridge will result in the loss of the long vista along the Canal in this area,
however, owing to the curvature of the Canal, views of the bridge from the Canal tunnel will not be
possible. The bridge itself will be largely screened from view beyond the Canal by intervening
vegetation and undulating topography although it will be substantially bigger than other crossings
currently extant. Although adverse impacts will increase on a local scale this is not considered to
be a significant departure in landscape and visual terms in relation from those identified within the
outline ES.
8.51. No changes to the cumulative effects to landscape character and visual amenity will occur as a
result of the relocation of the bridge.
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Table 5: Table of Significance – Landscape Character and Visual Assessment
Potential Effect
Nature of Effect (short<1 year/
Medium 1-5 years/ long term>5years)
Significance (Major/ Moderate/ Minor)
(Beneficial/ Adverse/ Negligible)
Mitigation/ Enhancement Measures
Geographical Importance* Residual Effects (Major/ Moderate/
Minor) (Beneficial/ Adverse/
Negligible)
I UK W R C D L
Construction
Landscape Features
Brecon and
Monmouthshire Canal
Direct, medium-term Minor adverse As outline ES including specifically:
Alignment of bridge informed by arboricultural report
Erection of tree protection fencing
Adoption of CoCp
* Direct, medium-term minor adverse
Visual Amenity
Brecon and
Monmouthshire Canal
Direct, medium-term Moderate/Major adverse As above * Direct, medium-term moderate adverse
Five Locks Close Direct, medium-term Major adverse As above * Direct, medium-term major adverse
Bryn Farmhouse Direct, medium-term Minor adverse As above * Direct, medium-term negligible
Neighbouring footpaths Direct, medium term Moderate adverse As above * Direct, medium-term negligible
Completed Development
Landscape Features
Brecon and
Monmouthshire Canal
Direct, long-term Minor adverse As outline ES including specifically:
Cladding of bridge facade
Sensitive design and lighting
Landscaping of approach roads
Additional strengthening of boundary vegetation
* Direct, long-term minor adverse
Visual Amenity
Brecon and Direct, long-term
Moderate adverse As above
* Direct, long-term
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Monmouthshire Canal
moderate adverse
Five Locks Close
(properties backing onto
Sebastopol application
area only)
Direct, long-term Moderate/Major adverse
As above * Direct, long-term
moderate/major adverse
Bryn Farmhouse Direct, long-term
Minor adverse As above
* Direct, long-term negligible
Neighbouring footpaths Direct, long-term
Minor adverse As above
* Direct, long-term negligible
Cumulative Effects
No additional effects – refer to outline ES * Geographical Level of Importance I = International; UK = United Kingdom; W = Wales; R = Regional; C = County; D = District; L = Local
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9. Transportation Assessment (Traffic, Transport and Movement)
Introduction
9.1. This chapter is written as an addendum to the chapter on Transportation Assessment (Traffic,
Transport and Movement), submitted as part of the original Environmental Statement in February
2011.
9.2. The addendum was requested in view of a change in the development plan relating to the crossing
over the canal, which is proposed here to be relocated from a crossing over the Canal Tunnel (a
Grade II listed structure) to a new location south of the Canal Tunnel.
9.3. There has been no change to Planning Policy or to the original Assessment Methodology/ Baseline
Conditions since the original Environmental Statement was submitted.
9.4. This chapter will only review the information related to Likely Significant Effects in view of the
change in location for the crossing over the canal.
Likely Significant Effects
9.5. There are no likely significant effects of the change in development plan, to the future baseline
conditions. As such, the identification of significant effects remains consistent with those originally
identified as part of the original Environmental Statement in February 2011.
9.6. It was previously proposed to:
Utilise the Existing Bevans Lane Bridge (albeit potentially upgraded) rather than constructing a
completely new bridge structure a short distance to the north of the existing bridge. (It is noted
that the existing bridge is an adopted structure that is owned by TCBC).
Form the southernmost crossing „at grade‟ over the Existing Canal Tunnel (It is noted that the
Existing Canal Tunnel is a listed structure and therefore a subterranean bridge structure is likely
to be required to ensure that no additional load is transferred to the Canal Tunnel Structure)
An „at-grade‟ Toucan Crossing would be provided at each of these Canal crossings in order to
retain the continuity of the existing towpath.
9.7. Due to a change in the development plan the proposal is now to construct a new bridge structure a
short distance to the south of the Canal Tunnel replacing the one canal crossing at the Canal
Tunnel Structure.
9.8. The network of pedestrian and cycle routes will in general follow the routes set within the Adopted
Development Framework and along the existing right of way alignments. Where new routes are
proposed, these will follow the alignment of existing mature hedgerows.
9.9. Following review of Chapter 9 – Transportation Assessment (Traffic, Transport and Movement) of
the Environmental Statement in support of the Outline Planning Application for the South
Sebastopol Development in January 2011, it is the view of Waterman Transport and Development
that the Chapter as published remains relevant with regard to this Addendum. Furthermore, the
revised Highway Route incorporating a new bridge structure crossing the Monmouthshire / Brecon
Canal, does not materially affect the information contained within the Chapter. Therefore, no
amendments to the contents of Chapter 9 of the Outline Application ES have been made.
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10. Archaeological, Built and Cultural Heritage
Introduction
10.1. This chapter is written as an addendum to the chapter on Archaeology, Built and Cultural Heritage,
submitted as part of the original Environmental Statement in February 2011.
10.2. The addendum was requested in view of a change in the development plan relating to the crossing
over the canal, which is proposed here to be relocated from a crossing over the Canal Tunnel (a
Grade II listed structure) to a new location south of the Canal Tunnel.
10.3. The addendum assessment is based on the following drawings:
Location of Southern Canal Bridge Crossing, Waterman (drawing ref. CIV11765-C-SA-90-008-
A01) – see appendix A;
Southern Bridge Crossing Extent of Works, Waterman (drawing ref. CIV11765-C-SA-90-007-
A01) – see appendix B; and
Highways General Arrangement, Waterman (drawing ref. CIV11765-C-SA-95-005-A02) – see
appendix C.
10.4. There has been no change to Planning Policy or to the original Assessment Methodology/ Baseline
Conditions since the original Environmental Statement was submitted.
10.5. This chapter will only review the information related to Likely Significant Effects in view of the
change in location for the crossing over the canal.
10.6. Mitigation Measures and Residual effects, as well as the Significance Matrix are overviews of all
heritage.
Likely Significant Effects
10.7. The likely significant effects of the Proposed Development are considered here in relation to the
future baseline conditions. The identification of significant effects covers all potential effects before
any mitigation measures. The significance matrix within Table 6 defines the level of significance of
effects and uses the following terms:
Beneficial or Adverse:
Beneficial – advantageous or positive effect to an environmental resource or receptor; or
Adverse – detrimental or negative effects to an environmental resource or receptor.
10.8. Where an effect is considered to be not significant or have no influence, irrespective of other
effects, this is classified as negligible.
10.9. Minor, Moderate or Major – this is the level of significance after mitigation where effects are
beneficial or adverse:
Minor – an effect which on its own is likely to have a minor influence on decision making but
when combined with other effects could have a more material influence;
Moderate – an effect which on its own could have some influence on decision making,
particularly when combined with other similar effects; or
Major – an effect which in isolation could have a material influence on the decision making
process.
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10.10. Short, Medium or Long Term – short to medium term effects are considered to be those
associated with the construction phase, and long term effects are those associated with the
completed development, when it is occupied and occupational.
10.11. Effects of the completed development have not been considered, as all likely significant effects will
occur from during the construction phase, and all therefore all effects considered on Table 43
below are long term.
10.12. Direct (for example, demolition) and indirect (for example, impact on setting).
10.13. The scale of effect e.g. Local level (on Application Site or neighbouring sites); District level (within
Pontypool/ Cwmbran area); County level (within Torfaen); Regional level (South Wales); Wales
level; UK level; International level.
Table 6: Significance Matrix – Archaeology, Built and Cultural Heritage
Sensitivity / Value of
Receptor
Magnitude of Effect
High Medium Low
High
(Wales/UK/International) Major Major/ Moderate Moderate
Medium
(County/Regional) Major/ Moderate Moderate Moderate/ Minor
Low
(Local/District) Moderate Moderate/ Minor Minor
Table 7: Significance Matrix – Archaeology, Built and Cultural Heritage – assessment of effects
PRN Description
Sensitivity/
Value
Magnitude
of Effect
Impact before
mitigation
00102g Tyr-Brychiad - Grade II Listed
(80864)
(farmhouse) – not part of
development plan but adjacent to
main road into site
Medium Minor Indirect, Minor
adverse
03263.73g Canal Tunnel –- Grade II Listed
(23957)
Medium Minor Indirect, Minor
adverse
--- Milepost –- Grade II Listed
(80863)
Medium Minor Indirect, Minor
adverse
07660g Wren‟s Nest Barn – not part of
development plan but adjacent to
main road into site - Grade II
Listed (80861
Medium Minor Indirect, Minor
adverse
3263g
(linear)
Canal – setting will be changed
along its route.
Medium Moderate Indirect, Minor
adverse
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PRN Description
Sensitivity/
Value
Magnitude
of Effect
Impact before
mitigation
Buried remains throughout the
site – potential sites
Low to
medium
Major Direct, Minor to
Moderate
adverse
Hedgerows, tracks and field
boundaries
Low Moderate Direct, Minor
adverse
Mitigation Measures
10.14. Landscape planting will help screen listed buildings from new development and a construction
management plan will limit traffic noise and dust effects on the setting of all structures including the
Canal Tunnel.
10.15. Interpretation panels along the canal towpath will disseminate information about the area gained
from research to date and future investigation.
Residual Effects
10.16. Residual impacts will be negligible if the mitigation measures set out above is implemented.
Summary
10.17. A number of listed buildings are identified as lying close to or surrounded by the site. A Canal
Tunnel in the centre of the site is also listed, Grade II. The setting and fabric of these designated
heritage receptors would be safeguarded.
10.18. A number of hedgerows and lanes survive within the site and are likely to be of some age. These
are incorporated as far as practical within the new master plan for development.
10.19. The undesignated remains of the old Pontrhydyrun Railway Station House survive within the site as
does a ruined cottage and a stone and brick water feature which may have been part of now
degraded parkland in the south of the site. All these structures will be retained, but if they have to
be removed as part of development, a full record should be made of their fabric, as agreed with the
Council and their advisors.
10.20. There are no significant remains of earlier than post-medieval date known within the site area and
the records for the surrounding area suggest relatively low archaeological potential. However, the
paucity of hitherto recorded remains may reflect the dominance of pasture across the site and the
absence of past archaeological investigation. Further archaeological investigation will be completed
in advance of construction in order to minimise any adverse impact of the proposals.
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Table 8: Table of Significance – Archaeological, Built and Cultural Heritage
Potential Effect Nature of Effect
(Permanent/ Temporary)
Significance (Major/ Moderate/
Minor) (Beneficial/ Adverse/
Negligible)
Mitigation/ Enhancement Measures
Geographical Importance*
Residual Effects (Major/ Moderate/
Minor) (Beneficial/ Adverse/
Negligible) I UK W R C D L
Construction Phase and Completed Development
Canal Tunnel –- Grade II Listed
(23957)
Permanent Indirect, Minor adverse . Landscape planting will minimise adverse effects on setting. Construction Management plan will limit traffic noise and dust effects.
* Indirect, Minor adverse
Milepost – Grade II Listed (80863) Temporary Indirect, Minor adverse Will be protected during the construction phase, unchanged thereafter.
* Negligible
Tyr-Brychiad - Grade II Listed
(80864) - not part of development
plan but adjacent to main road into
site
Permanent Indirect, Minor adverse Landscape planting will help screen listed buildings from new development and a construction management plan will limit traffic noise and dust effects on the setting of this structure.
* Negligible
Wren‟s Nest Barn – Grade II Listed
(80861) - not part of development
plan but adjacent to main road into
site
Permanent Indirect, Minor adverse As above. * Negligible
Canal – setting will be changed along
its route
Permanent Indirect, Minor adverse Sensitive landscape design and screening. Suitable investigation where directly affected.
* Direct or Indirect, Minor adverse
Hedgerows, tracks and field
boundaries
Permanent Direct, Minor adverse Incorporated as part of design as far as possible.
* Indirect, Minor adverse
Buried remains throughout the site –
potential sites
Permanent Direct, Minor to Moderate adverse
Suitable archaeological investigation prior to construction.
* Minor adverse
* Geographical Level of Importance I = International; UK = United Kingdom; W = Wales; R = Regional; C = County; D = District; L = Local
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11. Ground Conditions (Hydrogeology, Soils and Contaminated
Land)
11.1. Following review of Chapter 11 – Ground Conditions (Hydrogeology, Soils and Contaminated
Land), of the Environmental Statement in support of the Outline Planning Application for the South
Sebastopol Development dated January 2011, it is the view of Waterman Transport and
Development that the Chapter as published remains relevant with regard to this Addendum.
Specifically, the revised Highway Route incorporating a new bridge structure crossing the
Monmouthshire / Brecon Canal does not materially affect the information contained within the
Chapter. In this case no amendments to the contents of Chapter 11 of the Outline ES have been
made.
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12. Water Resources (Water Quality, Hydrology, Flood Risk and
Drainage Assessment)
12.1. Following review of Chapter 12 – Water resources (Water Quality, Flood Risk and Drainage
Assessment), of the Environmental Statement in support of the Outline Planning Application for the
South Sebastopol Development dated January 2011, it is the view of Waterman Transport and
Development that the Chapter as published remains relevant with regard to this Addendum.
Specifically the revised Highway Route incorporating a new bridge structure crossing the
Monmouthshire / Brecon Canal does not materially affect the information contained within the
Chapter. In this case no amendments to the contents of Chapter 12 of the Outline ES have been
made.
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13. Noise and Vibration Assessment
13.1. Following review of Chapter 13 – Noise and Vibration Assessment, of the Environmental Statement
in support of the Outline Planning Application for the South Sebastopol Development dated
January 2011, it is the view of Waterman Energy, Environment and Design that the Chapter as
published remains relevant with regard to this Addendum. Specifically the revised Highway Route
incorporating a new bridge structure crossing the Monmouthshire/ Brecon Canal, does not
materially affect the information contained within the Chapter. In this case no amendments to the
contents of Chapter 13 of the Outline ES have been made.
45 South Sebastopol
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14. Air Quality Assessment
14.1. Following review of Chapter 14 – Air Quality Assessment, of the Environmental Statement in
support of the Outline Planning Application for the South Sebastopol Development dated January
2011, it is the view of Waterman TD that the Chapter as published remains relevant with regard to
this Addendum. The review included discussions with Torfaen CBC following which it was
confirmed that no further assessment work would be required (beyond that covered in the ES
prepared in support of the Outline Planning Application). Specifically the revised Highway Route
incorporating a new bridge structure crossing the Monmouthshire/ Brecon Canal does not
materially affect the information contained within the Chapter. In this case no amendments to the
contents of Chapter 14 of the Outline ES have been made.
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15. Sustainability
15.1. Following review of Chapter 15 – Sustainability, of the Environmental Statement in support of the
Outline Planning Application for the South Sebastopol Development dated January 2011, it is the
view of Waterman Energy, Environment and Design that the Chapter as published remains
relevant with regard to this Addendum. Specifically the revised Highway Route incorporating a new
bridge structure crossing the Monmouthshire / Brecon Canal does not materially affect the
information contained within the Chapter. In this case no amendments to the contents of Chapter
15 of the Outline ES have been made.
47 South Sebastopol
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16. Non-Technical Summary
16.1. Chapter 16 of the Outline ES provides a Non-Technical Summary in respect of the other Chapters
in the Outline ES. As mentioned previously this Addendum ES has review all of the Chapters in
the Outline ES in view of the proposed revision to the Canal Crossing. In this respect it has been
assessed that there are three technical Chapters and two summary Chapters (in the Outline ES)
which are potentially materially affected by the proposed change in location of the Canal Crossing.
The technical Chapters affected are as follows: -
Chapter 5 - Ecology and Nature Conservation
Chapter 8 - Landscape Character and Visual Assessment
Chapter 10 - Archaeological Built and Cultural Heritage
16.2. The summary Chapters affected are as follows: -
Chapter 4 - Residual Impacts, Environmental Effects and Management
Chapter 16 - Non-Technical Summary
16.3. In this respect the sections of the Non-Technical Summary (Chapter 16) of the Outline ES are still
valid except for the sections relating to Chapters 4, 5, 8 and 10. Revised Non Technical
Summaries in respect of Chapters 5, 8 and 10 are provided below.
Chapter 5 - Ecology and Nature Conservation
16.4. A comprehensive sweep of ecological surveys have been undertaken at and adjacent to the Site
(type and scope agreed with CCW and TBC) have concluded that the Site is currently of negligible
to County ecological value.
16.5. Though there would be change to the existing habitats of ecological value at the Site as a result of
the Development of the new canal crossing, the extent and nature of the proposed enhancement
inherent to the Development design and additional mitigation including the production of an
Ecological Management Plan during construction and a Landscape and Ecological Management
plan post construction would result in a negligible and beneficial effect to the biodiversity of the
Site. This would include the introduction of habitats whilst protecting the existing species of
ecological value.
16.6. A number of potential and residual effects have been identified for the demolition and construction
phases of the Development and once the Development is completed and operational. These are
summarised below in the Table below.
Table 9: Potential and residual effects
Issue Potential Effect / Significance
Mitigation Measures Residual Effect / Significance
Demolition and Construction
Designated Sites Negligible None Required Negligible
Woodland and Scrub Minor Adverse Detailed within EMP Negligible
Hedges Minor Adverse Detailed within EMP Negligible
Grassland Negligible None Required Negligible
Monmouthshire and Brecon Canal
Minor Adverse Detailed within EMP Negligible
Bats Minor Adverse Detailed within EMP Minor Beneficial
48 South Sebastopol
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Issue Potential Effect / Significance
Mitigation Measures Residual Effect / Significance
Birds Minor Adverse Detailed within EMP Minor Beneficial
White-clawed Crayfish Minor Adverse Detailed within EMP Negligible
Otter and Water Voles Minor Adverse Detailed within EMP Negligible
Completed Development
Designated Sites Negligible None Required Negligible
Woodland and Scrub Minor Adverse Detailed within LEMP Negligible
Hedges Minor Adverse Detailed within LEMP Negligible
Grassland Negligible None Required Negligible
Monmouthshire and Brecon Canal
Minor Adverse Detailed within LEMP Negligible
Bats Minor Adverse Detailed within LEMP Minor Beneficial
Birds Minor Adverse Detailed within LEMP Minor Beneficial
White-clawed Crayfish Minor Adverse Detailed within LEMP Negligible
Otter and Water Voles Minor Adverse Detailed within LEMP Negligible
Chapter 8 - Landscape Character and Visual Assessment
16.7. The relocation of the bridge is envisaged in the south of the Sebastopol outline application area,
approximately 10-20m north of Five Locks Close. It comprises of the Brecon and Monmouthshire
Canal, its tree-lined banks and hedgerows with rough pastoral grassland beyond.
16.8. The relocation of the bridge will result in increased visual and audible intrusion during the
construction phase. However, the extent of these impacts is relatively limited to approximately
within a 100m stretch of the Canal owing the enclosure of the Canal and the vegetation that lines it.
Although impacts will be more apparent locally, they are not considered to result in an increase in
significance from those detailed within the outline ES in relation to the Sebastopol as a whole.
16.9. The relocation of the bridge will create a prominent, new feature within Brecon and Monmouthshire
Canal. However, provided the design and façade of the bridge is sensitive to the Canal and its
setting, it is concluded that there is no reason why the bridge cannot be assimilated successfully
into this context. The increase in traffic and lighting will, inevitably result in some minor increase in
intrusion to the rurality of the Canal although this is not considered to be significantly harmful.
16.10. The structure of the bridge will result in the loss of the long vista along the Canal in this area,
however, owing to the curvature of the Canal, views of the bridge from the Canal tunnel will not be
possible. The bridge itself will be largely screened from view beyond the Canal by intervening
vegetation and undulating topography although it will be substantially bigger than other crossings
currently extant. Although adverse impacts will increase on a local scale this is not considered to
be a significant departure in landscape and visual terms in relation from those identified within the
outline ES.
16.11. No changes to the cumulative effects to landscape character and visual amenity will occur as a
result of the relocation of the bridge.
Chapter 10 - Archaeological Built and Cultural Heritage
16.12. A number of listed buildings are identified as lying close to or surrounded by the site. A Canal
Tunnel in the centre of the site is also listed, Grade II. The setting and fabric of these designated
heritage receptors would be safeguarded.
49 South Sebastopol
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16.13. A number of hedgerows and lanes survive within the site and are likely to be of some age. These
are incorporated as far as practical within the new master plan for development.
16.14. The undesignated remains of the old Pontrhydyrun Railway Station House survive within the site as
does a ruined cottage and a stone and brick water feature which may have been part of now
degraded parkland in the south of the site. All these structures will be retained but if they have to
be removed as part of development, a full record should be made of their fabric, as agreed with the
Council and their advisors.
16.15. There are no significant remains of earlier than post-medieval date known within the site area and
the records for the surrounding area suggest relatively low archaeological potential. However, the
paucity of hitherto recorded remains may reflect the dominance of pasture across the site and the
absence of past archaeological investigation. Further archaeological investigation will be completed
in advance of construction in order to minimise any adverse impact of the proposals.
South Sebastopol
Project Number: CIV11765
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APPENDICES
A. Location of Southern Canal Bridge Crossing - drawing ref. CIV11765-C-SA-
90-008-A01
South Sebastopol
Project Number: CIV11765
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B. Southern Bridge Crossing – extent of works - drawing ref. CIV11765-C-SA-
90-007-A01
South Sebastopol
Project Number: CIV11765
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C. Highways General Arrangement - drawing ref. CIV11765-C-SA-95-005-A02
South Sebastopol
Project Number: CIV11765
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D. Figures 8.1 to 8.6A – Photoviewpoint Location Plan and Photoviewpoint
images
Project Details
Figure Ref
Date
Figure Title
File Location
Figure 8.1: Photoviewpoint Location Plan
\\nt-lnpg2\weedl\projects\e11338\100\graphics\lvia\issued figures
E11338-100_GR_LVIA_8.1A
March 2011
E11338-100: South Sebastopol
www.watermangroup.com
Energy, Environment & Design
F
D
E
A
B
C
Site boundary
Photoviewpoint Locations
N
Reproduced from the Ordnance Survey maps with the permission of the Controller of Her Majesty’s Stationery Office,© Crown copyright, Waterman Energy, Environment & Design, Versailles Court, 3 Paris Garden, London SE1 8ND. Licence number 100048868.
© WATERMAN ENERGY, ENVIRONMENT & DESIGN
F
Photoviewpoint A: View from the Brecon and Monmouthshire Canal towpath adjacent to the lock at Five Locks Close looking north toward the site. An attractive vista is formed by the canal which stretches to the middle distance. The whitewashed Lock Keepers Cottage and dwellings at Five Locks Close can be seen to west with the lower foothills of Mynydd Twyn-glas beyond.
Photoviewpoint B: View from the Brecon and Monmouthshire Canal towpath adjacent to Five Locks Close looking north toward the site. Vegetation lining the canal is apparent within this view whilst the curvature of the canal itself limits the length of the vista in this location. A gap in the hedgerow allows localised views over adjacent land to the east.
Five Locks Close
Lock Keeper’s Cottage
Canal Towpath
Five Locks Close
Project Details
Figure Ref
Date
Figure Title
File Location
Figure 8.2: Photoviewpoints A & B
\\nt-lnpg2\weedl\projects\e11338\100\graphics\lvia\issued figures
E11338-100_GR_LVIA_8.2A
March 2011
E11338-100: South Sebastopol
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Energy, Environment & Design
Photoviewpoint C: View from the Brecon and Monmouthshire Canal towpath looking south within the site. A long vista to Five Locks Road is created along the Canal although views beyond this are limited by aligning vegetation. Filtered views to dwellings at Five Locks Close to the west are also possible.
Project Details
Figure Ref
Date
Figure Title
File Location
Figure 8.3: Photoviewpoint C
\\nt-lnpg2\weedl\projects\e11338\100\graphics\lvia\issued figures
E11338-100_GR_LVIA_8.3A
March 2011
E11338-100: South Sebastopol
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Energy, Environment & Design
Five Locks Road Five Locks Close
Photoviewpoint D: View from footpath running east from the Brecon and Monmouthshire Canal to Wren’s Nest Farm looking southeast across the site. The undulating topography of this area is apparent in the view, screening the dwellings of Wren’s Nest Farm in the middle ground. Continued > Vegetation following the Stream 6 is also visible, filtering views to Five Locks Close.
< Continued
Project Details
Figure Ref
Date
Figure Title
File Location
Figure 8.4: Photoviewpoints D
\\nt-lnpg2\weedl\projects\e11338\100\graphics\lvia\issued figures
E11338-100_GR_LVIA_8.4A
March 2011
E11338-100: South Sebastopol
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Energy, Environment & Design
Wren’s Nest Farm
Canalside Day Centre
Stream 6
Five Locks Close
Photoviewpoint E: View from the footpath running west from the Brecon and Monmouthshire Canal to Bryn Farmhouse looking southwest. The land rises steeply from the Canal westward to Mynydd Twyn-glas with Bryn Farmhouse prominent in the middle ground. Continued > Hedgerows and wooded brooks serve to filter views within the site.
< Continued
Project Details
Figure Ref
Date
Figure Title
File Location
Figure 8.5: Photoviewpoint E
\\nt-lnpg2\weedl\projects\e11338\100\graphics\lvia\issued figures
E11338-100_GR_LVIA_8.5A
March 2011
E11338-100: South Sebastopol
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Energy, Environment & Design
Bryn Farmhouse
Photoviewpoint F: View from Bryn Farmhouse within the site looking southeast. The elevated location affords views over the site and beyond. The vegetative network of the site is apparent in the view although filtered views of dwellings at Five Locks Close are possible from this location. Continued >
< Continued
Project Details
Figure Ref
Date
Figure Title
File Location
Figure 8.6: Photoviewpoint F
\\nt-lnpg2\weedl\projects\e11338\100\graphics\lvia\issued figures
E11338-100_GR_LVIA_8.6A
March 2011
E11338-100: South Sebastopol
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Energy, Environment & Design
Five Locks Close
Five Locks Close
Canal
Knauf Insulation Works
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