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8 Countryside and Natural Environment
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Introduction
Key Objective
Area of Outstanding Natural Beauty
POLICY CNE1
Landscape Character
Figure 8.1 - Landscape Character Areas
POLICY CNE2
Distinctive Features of the District
POLICY CNE17
The Conversion of Rural Buildings
POLICY CNE3
Countryside Around Settlements
POLICY CNE4
Country Park, South Bridgwater
POLICY CNE18
Protecting the Best Agricultural Land
POLICY CNE5
Agricultural and Equestrian Buildings
POLICY CNE6
Nature Conservation
Internationally Important Sites
Figure 8.2 - Nature Conservation Sites of International Importance
POLICY CNE7
Nationally Important Sites
Figure 8.3 - Nature Conservation Sites of National Importance
POLICY CNE8
Interest on Other Sites
Figure 8.4 - Nature Conservation Sites of Regional or Local Importance
POLICY CNE9
Protected Species and Priority Species
POLICY CNE10
Protecting and Enhancing Locally Accessible Green Space
POLICY CN11
Trees, Hedgerows and Woodlands
POLICY CNE12
Woodland Management
Tree Planting Grants
Tree Planting Schemes
The Water Environment and Flood Risks
Development on Floodplains and in other Flood Risk Locations
Figure 8.5 - Indicative Floodplains
POLICY CNE14
POLICY CNE14A
Land Drainage
POLICY CNE15
Groundwater Source Protection Zones and Aquifers
Figure 8.6 - Aquifers
POLICY CNE16
Coastal Zone Management
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1 Introduction
2 Purpose and Aims
3 Strategy
4 Housing
5 Employment and Economic Development
6 Shopping and Town Centres
7 Transport and Movement
8 Countryside and Natural Environment
9 Built Environment
10 Historic Environment
11 Recreation, Leisure and Tourism
12 Public and Community Services
Appendix 4.1
Appendix 5.1
Appendix 7.1
Appendix 8.1
Appendix 8.2
Appendix 8.3
Appendix 9.1
Appendix 11.1
Appendix 11.2
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Proposals Map
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Terms and Conditions
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8 Countryside and Natural Environment
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Introduction
8.01 The Countryside that exists today has evolved through centuries of change reflecting the interplay between the society of the time and its technology. But in recent decades the English countryside has been changing more rapidly, more dramatically and perhaps with more adverse consequences than ever before.
8.02 One of the core purposes of the system of Town and Country Planning which has been created during the 20th century has been to control urban development in ways which would minimise impact on the countryside. An approach based on “containment”has tried to limit the impacts and spread of urbanisation. But this is a damage limitation strategy which has had to cope with continuing pressures for development.
8.03 Areas of countryside have inevitably continued to be lost to urban growth. The construction of a national motorway network and other major road schemes have had direct impacts on the countryside and have often brought new pressures for development.
8.04 A countryside which might have previously undergone only gradual change and to which the primary threat was urban development, has also experienced significant changes in farming practices and forestry. Landscape features and wildlife which were once common place have been greatly depleted.
8.05 Many concerns about the changing countryside relate to activities which are outside the scope of the planning system. The Plan must aim to play its part in helping to protect the countryside -for the sake of its beauty, the diversity of its landscape and historic character, the wealth of its natural resources and its ecological, agricultural, recreational and archaeological value. But it is also clear that other agencies and landowners may have more significant influence.
8.06 The District is predominantly rural and has a twelve mile coastline on the Bristol Channel. Large tracts of the District are part of the Somerset Levels and Moors, a landscape which has been reclaimed from its natural wetland state.
8.07 Neither the coast nor the Levels and Moors carry any national landscape designation but both include large areas which are of designated National, European and International importance for nature conservation. Much of the Levels and Moors is also an Environmentally Sensitive Area, within which, farmers are eligible for grant-aid if they enter appropriate management agreements.
8.08 The District is bounded to the north by the Mendip Hills and to the south-west by the Quantock Hills, both of which are nationally designated Areas of Outstanding Natural Beauty.
8.09 The District’s countryside and natural environment are not only assets meriting protection in their own right, but are also a major resource for tourism and recreation.
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Key Objective
  To ensure that the new Plan plays its part in ensuring that our countryside and natural environment is effectively managed, including its conservation, protection and enhancement. This broad objective can be translated into a number of supplementary objectives. These are:
  • to safeguard good quality agricultural land;
     
  • to conserve and enhance the quality and character of the District’s countryside, especially areas identified as having particular landscape or nature conservation value;
     
  • to encourage the provision of additional features which contribute towards increasing our stock of natural assets, such as tree planting and the creation of woodland, wetland and other wildlife habitats;
     
  • to conserve and enhance those places and environmental features which contribute to the character of our settlements;
     
  • to improve areas of poor environmental, amenity or visual quality in both our settlements and countryside; and
     
  • to protect and enhance our water environment (including the coast, rivers and other watercourses, wetlands, ponds and ground-water), for their own sake, and for their contribution to nature conservation, the landscape and our water supply.
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Area of Outstanding Natural Beauty
8.10 Area of Outstanding Natural Beauty (AONB) is a statutory landscape designation confirmed at a national level. The primary objective of designation is “conservation of the natural beauty of the landscape”. This objective is pursued by a variety of methods, including the expectation that the landscape impact of new proposals will be a major consideration in development control decisions taken by the District Council.
8.11 In accordance with national guidance the environmental effects of new proposals will be a major consideration although it will also be appropriate to have regard to the economic and social well being of the areas. Particular attention should be paid to the siting, scale, design, materials and landscaping of proposed developments. Buildings, structures and landscaping should be designed with sensitivity to local landscape character and conserve, restore or recreate features which contribute to local distinctiveness.
8.12 National guidance states that proposals for major development in an AONB should be demonstrated to be in the public interest before being allowed to proceed. Consideration of applications should therefore normally include an assessment of:

i) the need for the development, in terms of national considerations and the impact of permitting it or refusing it on the local economy;

ii) the cost and scope for developing else where outside the area or meeting the need for it in some other way; and

iii) any detrimental effect on the environment and landscape and the extent to which that should be moderated.

(PPG7, paragraph 4.8 as amended by the Ministerial Statement on the planning status of AONBs in June 2000, subsequently restated in paragraph 22 of PPS7, July 2004). This is clearly an important guiding principle but neither national guidance nor this Local Plan Policy adopt a standpoint of resisting all forms of development. In particular, we must recognise that the AONBs are not totally undeveloped landscapes and in some circumstances further development may be justified. For example, to meet the needs of an established farming or forestry operation and other rural businesses, local needs housing and conversion of existing buildings.

8.13 The boundaries of the Areas of Outstanding Natural Beauty are shown on the Proposals Map.
8.14 The Mendip Hills AONB boundary skirts around the main built-up areas of Axbridge, Cheddar, Cross and Shipham, but parts of the commercial area of Cheddar Gorge lie within the AONB, as do a number of residential and business premises on the fringes of Axbridge and Cheddar. Small settlements such as Compton Bishop, Rowberrow, Star and Webbington lie within the AONB and the A38 passes though it. There are also active limestone quarries in the area.
8.15 That part of the Quantock Hills AONB which lies within Sedgemoor District includes some hilltop common land but is primarily a landscape of farmland, woodland and forest. Small settlements such as Aisholt, Broomfield and Over Stowey lie within the AONB and a number of other Villages such as Enmore, Nether Stowey and Spaxton are nearby.
8.16 The particular landscape elements and characteristics which underpin the status of these areas as Areas of Outstanding Natural Beauty are described in separate landscape assessment documents. For the Mendip Hills the relevant documents are “The Mendip Hills Landscape”, published by The Countryside Commission in 1998 which followed, and is based on “Landscape Assessment of the Mendip Hills” a report prepared by Chris Blandford Associates for the Countryside Commission in 1996. “The Quantock Hills Landscape – an assessment of the Area of Outstanding Natural Beauty” was published by the Countryside Agency in 2003, following a study carried out by Land Use Consultants for the Countryside Commission in 1997. Further information may also be found in the “Sedgemoor Landscape Assessment and Countryside Design Summary”.
8.17 Features which make up the special character of the Mendip Hills AONB or the Quantock Hills AONB will be protected where possible under the planning system. However, the planning system cannot directly protect many of the relevant landscape features (eg dry stone walls, heathland, unimproved grassland or other specific land cover) because changes are not subject to planning control. Such matters can be more directly and appropriately addressed through AONB Management Plans and targeted land management advice and assistance which may be available through schemes such as Countryside Stewardship, the Farming and Wildlife Advisory Group and SSSI management. Further guidance can be found in the Mendip Hills AONB Management Plan (Mendip Hills AONB Partnership, 2004) and “The Quantock Hills AONB Management Plan ”(Quantock Hills JAC, 2004).
 

POLICY CNE1
The primary objective of AONB designation is conservation of the natural beauty of the landscape. Development proposed within the Mendip Hills AONB or the Quantock Hills AONB will not be permitted if it would harm the natural beauty, or the exceptional character or quality of the landscape in these areas.

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Landscape Character
8.18 Structure Plan Policy STR6 states that: “Development outside Towns, Rural Centres and Villages should be strictly controlled and restricted to that which benefits economic activity, maintains or enhances the environment and does not foster growth in the need to travel. ”This policy of “strict control” reflects national planning guidance which also embodies a policy that “the countryside should be safeguarded for its own sake”, i.e. “countryside”is a recognised asset in its own right in addition to any associated attributes such as designated wildlife interest or agricultural land quality.
8.19 In addition to a broad policy of “strict control” of development in the countryside, there are many parts of the District’s countryside which are affected by statutory designations for landscape, wildlife or historic importance where policies give even greater priority to restraint. There are also areas where factors such as flood risk or agricultural land quality will constrain development.
8.20 If circumstances are such that the development proposed in the countryside is acceptable in principle, then Policy CNE2 will apply. Applicants should refer to the “Sedgemoor District Landscape Assessment and Countryside Design Summary” (Revised Edition, 2003) for further guidance on how the “character areas” identified by the Countryside Commission and English Nature in “The Character of England”(1996) have been interpreted locally. The aim of this guidance has been to provide a better understanding of the varied character of the English landscape and in particular to foster recognition of the elements which create a sense of place or “local distinctiveness”. Figure 8.1 shows the Landscape Character Areas identified in the Sedgemoor study.
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  Figure 8.1 - Landscape Character Areas

Figure 8.1 - Landscape Character Areas
Figure 8.1 as a PDF file (233kb)

 

POLICY CNE2
Development which adversely affects local landscape character or scenic quality will not be permitted. In particular:

a) siting and landscaping should take account of visibility from publicly accessible vantage points; and

b) the form, bulk and design of buildings should have proper regard to their context in respect of both the immediate setting and the defining characteristics of the wider local area.

In determining planning applications the important characteristics of landscape character areas described in the Sedgemoor Landscape Assessment and Countryside Design Summary and/or AONB Landscape Assessments will be a material consideration.

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Distinctive Features of the District
8.21 Structure Plan Policy 7 on the subject of Landscape Character requires that “particular regard should be had to the distinctive features of the countryside in landscape, cultural heritage and nature conservation terms in the provision for development”. Landscape features of significant local importance vary in scale, from large topographical features, such as the isolated hill of Brent Knoll, the distinctive profile of which is visible across a wide surrounding area, down to small scale natural or man-made features. Some may be significant local landmarks (e.g. church towers, prominent trees) and may be specifically protected under separate legislation (e.g. listed buildings, Tree Preservation Orders) but the importance of other features may simply be that they are one of the characteristic features of the area (e.g. local types of boundary wall, gateways and hedgerows).
8.22 Features such as hedgerows, rhynes, drystone walls, orchards, wildflower meadows, old farm buildings, woodlands, willow trees and ponds are important elements of the local landscape. The removal of many such features is generally not a matter which is subject of planning controls and there has undoubtedly been a significant loss or deterioration of the stock of some such features. Financial and other support from the Department for Environment, Food and Rural Affairs (DEFRA), Countryside Agency, nature conservation bodies and others may safeguard and restore some of these countryside features. The planning system can play a particular part where development is proposed. This may be in the form of seeking the retention or repair of existing site features or by ensuring that a scheme provides replacement or new elements which will be a positive contribution to the stock of distinctive local features. Additional guidance can be found in the “Sedgemoor Landscape Assessment and Countryside Design Summary”.
 

POLICY CNE17
Development which would adversely affect distinctive features of the local landscape (as identified in the AONB Landscape Assessments, Sedgemoor Landscape Assessment and Countryside Design Summary or Village Design Statements) will not be permitted.

Development proposals in the countryside, rural settlements and urban fringes should retain, replace, repair or otherwise add to the stock of features which create local distinctiveness.

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The Conversion of Rural Buildings
8.23  The conversion of rural buildings can make an important contribution to minimising the need for new development and maximising the use of existing resources. In particular, it can help generate new rural employment opportunities. However, buildings in a remote location away from roads and settlements will require particular consideration in terms of the visual intrusion into the landscape of the development, and the access and other services running to it.
8.24 The Council will not permit the subsequent redevelopment or significant extension of a building converted to an alternative use. The purpose of allowing conversion is to bring into positive use a building that would otherwise be unused. Conversion is not acceptable if substantial rebuilding or significant extension is required. New buildings in the countryside are strictly controlled. Redevelopment and significant extension would be inconsistent with this.
8.25 The policy is applicable to all rural buildings. The retention and sensitive conversion of traditional farm buildings will normally be a positive benefit for countryside character. However, the merits of retaining modern agricultural buildings are likely to be less clear and may give rise to legitimate planning objections on environmental or traffic grounds. Re-use may need to be restricted by planning conditions and the Council may seek improvements in the landscaping of such structures when conversion to another use is proposed. In accordance with the advice in Annex G of PPG7 (1997) the Council will carefully examine any applications for re-use of buildings recently erected under agricultural permitted development rights and also consider the use of Section 106 Agreements in respect of farm diversification projects.
 

POLICY CNE3
In the countryside (outside settlement development boundaries), the re-use and adaptation of rural buildings will be permitted, provided that:

a) the building, of permanent and substantial construction, can be converted without significant rebuilding or extension;

b) its form, bulk and general design are in keeping with its surroundings; and

c) conversion does not lead to dispersal of activity on such a scale as to prejudice the vitality of settlements.

Conversions for small-scale industrial, commercial, tourism or recreation uses:

i) should not create environmental nuisances or pollution;

ii) should meet relevant parking standards, without harming the character or appearance of the countryside; and

iii) should contain all industrial and commercial activities and storage wholly or predominantly within building(s).

Conversions to residential use may be permitted where re-use for business purposes is not practicable or feasible and where the creation of a residential curtilage would not harm the countryside.

In all cases, the building should be of a suitable size and character for the intended use, and new building works should respect

that character. In addition, the site should have safe and adequate access, and all proposals should include measures to protect significant nature conservation interests. In determining proposals to convert an agricultural building, account will be taken of the period and extent that the building has been used for its original purpose.

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Countryside Around Settlements
8.26 The previous Local Plans have relied entirely on “Development Boundaries” as the planning policy tool for limiting the expansion of settlements and protecting surrounding countryside. In some instances such boundaries were reinforced by factors such as floodable land, agricultural land quality and AONB boundaries, but other significant attributes of surrounding countryside have not been so explicitly stated.
8.27 Whilst general protection of the countryside “for its own sake“ (irrespective of other designations) is a key element of national planning policy, it is inevitable that some countryside is lost to development as settlements grow. This has consequences not only in terms of “loss of countryside” in general terms, but can also have very particular local impacts. The countryside closest to our Towns and Villages can be important for a variety of reasons:
  • it is most the accessible countryside for local people, providing opportunities for walking, nature watching and other activities which can be enjoyed without having to travel by car;
     
  • it may have special significance as the setting for the settlement; and
     
  • it may contain hedgerows, trees and woodland which are important in helping to absorb the settlement into its surrounding landscape; conversely the absence of such features can be a major deficiency.
8.28 It is important that these functions and the relationship between settlements and their immediately adjacent countryside are given due consideration.
8.29 The Development Boundary around settlements is the primary planning policy tool for containment of urban development during the Plan period. The Council believes it is also important that there is a clear vision of the extent to which some areas of adjacent countryside have very particular significance in terms of:
  • a pattern of urban development which retains links with surrounding countryside, thereby has a positive, visible landscape context and enables townspeople to enjoy reasonable countryside access;
     
  • approach routes and perceptions of a settlement;
     
  • preventing the coalescence of adjacent settlements, a function which in some instances may be better achieved if accompanied by appropriate land management measures, such as the creation of wetland habitats or the planting of trees rather than merely retaining an undeveloped gap;
     
  • the need to protect and enhance significant views; and
     
  • providing natural corridors and habitats for wildlife.
8.30 Those areas of countryside which are the most important and potentially vulnerable in respect of these issues are designated as Green Wedges, Green Edges and Strategic Gaps shown on the Proposals Map. The individual importance of each area is described in Appendix 8.1. The issue of countryside access is also addressed in Chapter 11.
 

POLICY CNE4
Areas of land which have particular importance as Green Wedge, Green Edge or Strategic Gap are defined on the Proposals Map. Whatever their individual character and function, these are predominantly open areas, mostly outside development boundaries, which retain a largely rural character and appearance. Positive land management which benefits the landscape, countryside access, amenity, nature conservation or urban area containment / enhancement functions of these areas will be encouraged and developments which would have a detrimental effect on these functions will not be permitted.

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Country Park, South Bridgwater
8.31 In conjunction with the development of two major housing sites at the southern edge of Bridgwater (Proposal H55, Dawes Farm and Willstock Farm), this intervening low-lying land will be transformed into a Country Park. A mix of facilities and zones is envisaged including play areas, kickabout areas, playing fields, events fields, lakes, ponds and other wetland habitats, wildflower meadows, woodland areas, green corridors, footpath and cycle routes. Most of the site is within the floodplain and will need to serve as a flood water storage area in extreme events. Further details are set out in the Development and Design Guide for South Bridgwater.
 

PROPOSAL CNE18
A Country Park will be created on land at Stockmoor, South Bridgwater (Link to Map 1 Central).

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Protecting the Best Agricultural Land
8.32 Government guidance makes it clear that despite some changes in agricultural policy, the need to protect the basic resource of good quality agricultural land remains a relevant consideration. Agricultural land is classified by the Department for Environment, Food and Rural Affairs (DEFRA), formerly Ministry of Agriculture, Fisheries and Food (MAFF), according to its potential productivity (determined by climate, site and soil factors and the inter-relationship between them). The “best and most versatile” land comprises Grades 1 (excellent), 2 (very good) and 3a (good).
8.33 Unfortunately, the “semi-detailed”survey work which is necessary to distinguish between Grade 3a (good) and Grade 3b (moderate) land has only been carried out in the vicinity of our larger settlements. Elsewhere in the District there are large areas of land which are classified as Grade 3 but with no distinction between 3a and 3b. This situation gives some difficulty for policy interpretation. The Proposals Map shows “best and most versatile” agricultural land on the following basis:

a) where the DEFRA semi-detailed survey is available the notation covers all land in Grade 1, 2 and 3a; and

b) elsewhere the notation on the Proposals Map covers only Grades 1 and 2.

8.34 Settlements where good quality agricultural land is a development constraint include: Axbridge, Berrow, Bridgwater, Cannington,
Cheddar, Chedzoy, Enmore, Goathurst, Middlezoy, North Newton, North Petherton, Othery, Spaxton, Thurloxton, West Huntspill and Westonzoyland.
8.35 The actual grading of individual areas can be checked by reference to the Council’s Geographic Information System which holds mapping supplied in digital form by DEFRA. If more detailed information becomes available, in particular areas, the new grading or boundary information will supersede the Proposals Map, if appropriate.
 

POLICY CNE5
The best and most versatile agricultural land (Grades 1, 2 and 3a) will be protected from development. Planning permission for development affecting such land will only be granted if there is an overriding need for the development and either:

a) sufficient suitably located land of a lower grade (Grades 3b, 4 and 5) is unavailable; or

b) available lower grade land has a wildlife, landscape, amenity, historic, archaeological or other environmental value which outweighs the agricultural considerations.

If best and most versatile land needs to be developed and there is a choice between sites in different grades, land of the lowest grade available should be used, unless other sustainability considerations suggest otherwise.

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Agricultural and Equestrian Buildings
8.36 In the countryside all new development will be strictly controlled (Policy STR3). In some circumstances a proposed new farm building may benefit from “permitted development rights” but the Council must still be notified in advance of the intended exercise of such rights and can require details of siting, design and external appearance to be submitted for approval before work starts. In all other cases agricultural buildings will need to be subject to the normal planning application procedure. The limited circumstances in which equestrian buildings might enjoy “permitted development rights” are outlined in Annex F of PPG7 (1997). Agricultural and equestrian buildings which require planning permission should comply with the criteria in Policy CNE6 and regard should also be had to other Local Plan policies which may be applicable (e.g. Policy CNE1, Policy CNE2, Policy CNE7, Policy CNE8, Policy CNE9, Policy CNE10, Policy CNE12, Policy CNE14, Policy CNE15, Policy CNE16, Policy BE11, Policy HE11); equestrian buildings may also need to comply with Policy RLT13. Agricultural Building Design Guidelines for the Mendip Hills AONB and Guidelines for Horse-related Development in the Mendip Hills AONB are available in separate documents adopted as supplementary planning guidance in 2001 and 2004 respectively. Landscape impact should be minimised through such means as locating within or adjacent to an existing building group, tree planting and use of local materials or cladding, which is non-reflective and neutral-dark in tone and colour.
 

POLICY CNE6
Proposals for new agricultural and equestrian buildings in the countryside will be permitted where all of the following criteria are met:

a) The scale, materials, design and construction of the proposed building are appropriate to its intended function;

b) its siting and design are such as to minimise its effect on the appearance of the countryside and to avoid any harmful effects upon the occupiers of nearby buildings and land;

c) the building will not adversely affect any feature of significant environmental, archaeological or nature conservation interest; and

d) any new access to the highway is safe and respects local countryside character by sensitive design of any new gateways and boundaries.

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Nature Conservation
8.37 PPG9 (Nature Conservation) sets out the Government’s objectives for nature conservation and how it should be taken into account by the planning system. It recognises that nature conservation can be a significant material consideration in planning decisions and that designated sites should be protected, taking into account their relative significance as international, national or locally important sites. Government advice is that statutorily designated sites, ‘are protected from damage and destruction, with their important scientific features conserved by appropriate management’.
8.38 The whole of Sedgemoor’s coastal territory and substantial areas of its countryside have been identified as “Sites of Special Scientific Interest”, (SSSI’s) i. e. sites which are nationally important for their flora, fauna, geological or landform features. Some of these sites have been additionally notified as being of international significance. Four Nature Conservation policies are set out below, dealing in turn with:

a) internationally important sites;

b) nationally important sites;

c) other sites; and

d) protected species.

A district-wide Biodiversity Action Plan (BAP) has been prepared and will be relevant to an appreciation of wildlife and ecology in the wider countryside and item (c) above in particular.
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Internationally Important Sites
8.39 There are three types of “Internationally Important” nature conservation sites:
  • “Ramsar Sites” listed by the Secretary of State under the Ramsar Convention on Wetlands of International Importance, for their wetland wildlife and particularly as water fowl habitats;
     
  • “Special Protection Areas” (SPAs) classified under the EC Directive on the conservation of wild birds (the “Birds Directive”), as the most suitable areas of habitat of threatened bird species which should be conserved in order to ensure their survival and reproduction; and
     
  • “Special Areas of Conservation” (SACs) designated under the EC Directive on the Conservation of Natural Habitats and of Wild Fauna and Flora (‘the Habitats Directive”) are selected for their importance as natural habitat types and as habitats of threatened animal and plant species.
8.40 With the exception of marine sites, all such sites are also (SSSIs) designated under the Wildlife and Countryside Act 1981.
8.41 The extent of land in Sedgemoor District currently affected by Ramsar Site and SPA status is shown on Figure 8.2. Both designations affect all these areas, the coastal/estuarine areas being part of the Severn Estuary site and the inland areas being key sites in the Somerset Levels and Moors. Individual site boundaries can be identified more precisely by reference to the Proposals Map.
  Figure 8.2 - Nature Conservation Sites of International Importance

Figure 8.2 - Nature Conservation Sites of International Importance
Figure 8.2 as a PDF file (166kb)

8.42 In addition to those areas, there are sites in the Mendip Hills, Brean Down and the Quantock Hills which have been put forward to the European Commission as candidate SACs, for example, Mendip Limestone Grasslands, Mendip Woodlands, North Somerset and Mendip Bats and Exmoor and Quantock Oakwoods. These sites are also identified on Figure 8.2. In accordance with the advice at paragraph 13 of PPG9 they must be treated in the same way as a fully designated site if development proposals affecting them are being considered.
8.43 In addition to the classified SPA covering the inter-tidal feeding areas in the Severn Estuary, the marine environment of the whole of the Severn Estuary is also under consideration as a possible SAC. If taken forward as a candidate SAC that marine environment will also be treated as if fully designated, but at present its status is national rather than international importance.
8.44 In considering development proposals affecting SPAs and SACs, first it must be established whether the proposed development is directly connected with site management for nature conservation and whether it is likely to have a significant effect. Taking account of advice from English Nature we must consider whether the effect of the proposal either individually or in combination with other proposals, is likely to be significant in terms of the ecological objectives for which the site was designated.
8.45 English Nature are expected to advise us on a case-by-case basis about a site’s conservation objectives and whether or not a proposal will adversely affect the integrity of the site. English Nature ‘s intention for this is the coherence of its ecological structure and function, across its whole area, that enables it to sustain the habitat, complex of habitats and/or the populations of species for which it was classified.
8.46 Annex C of PPG9 gives further guidance and advises that if it is ascertained that a proposal will adversely affect the integrity of a site and this effect will not be removed by conditions, the Council must not grant planning permission except in the following closely defined circumstances:
a) there are no alternative solutions; and

b) the proposed development has to be carried out for imperative reasons of overriding public interest.
8.47 Landowners and prospective developers should also note that designation as a SPA or SAC may affect permitted development rights granted by the Town and Country Planning (General Permitted Development) Order 1995. In particular, the Habitats Directive prevents any development which is likely to significantly affect such sites from benefiting from permitted development rights unless the District Council has decided that it would not adversely affect the integrity of the site. Such a decision is arrived at after consultation with English Nature. Development in or near such sites should therefore, not proceed without first checking with the District Council and/or English Nature.
 

POLICY CNE7
Development which is likely to have a significant adverse effect on the conservation objectives or the integrity of a site of international importance (i. e. Ramsar sites, potential and classified Special Protection Areas, or candidate and designated Special Areas of Conservation) will not be permitted.

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Nationally Important Sites
8.48 Sites of Special Scientific Interest (SSSIs) are designated by English Nature and are sites of national importance for nature conservation, because of their biological, geological or geo-morphological interest. National Nature Reserves (NNRs) are SSSIs which have the additional characteristic of being owned or leased by English Nature or bodies approved by them, or are managed in accordance with Nature Reserve Agreements with landowners and occupiers. The essential characteristic of NNRs is that they are primarily used for nature conservation.
8.49 The extent of land in Sedgemoor currently affected by SSSI or NNR status is shown on Figure 8.3. Site boundaries can be identified more precisely by reference to the Proposals Map. If any additional sites are subsequently notified and confirmed as SSSI these will also be subject to the provisions of this Local Plan Policy.
  Figure 8.3 - Nature Conservation Sites of National Importance

Figure 8.3 - Nature Conservation Sites of National Importance
Figure 8.3 as a PDF file (196Kb)

8.50 The key importance of SSSIs means that development proposals in or likely to affect them must be subject of special scrutiny and we must consult English Nature. Consultation zones around our individual SSSI’s have not be defined by English Nature, but as an interim arrangement the Council is consulting on sites within 750 metres of an SSSI boundary in rural locations. Development proposals within existing settlements are subject of consultation only if the site is within 100 metres of a SSSI.
8.51 Some SSSIs have additional designations conferred on them for specific reasons. Designations which confer “international importance” have been identified under Local Plan Policy CNE7, but the “national importance” of a SSSI is also enhanced if it is either a:
  • National Nature Reserve (NNR);
     
  • Nature Conservation Review (NCR) site; or
     
  • Geological Conservation Review (GCR) site.
8.52 On the advice of English Nature, the Secretary of State will normally call-in for his own decision planning applications with a significant effect on these sites.
8.53 The terms of this Local Plan Policy reflect the guidance in PPG9. Where there is a risk of damage to a SSSI the Council is advised to consider the use of conditions or planning obligations in the interests of nature conservation. Conditions can be used, for example, to require areas to be fenced or bunded off to protect them, or to restrict operations or uses to specific times of year. Planning obligations can accompany permissions in order to secure long-term management, to provide funds for management, or to provide nature conservation features to compensate for any such features lost when development takes place.
8.54 The permission granted by the Town and Country Planning (General Permitted Development) Order 1995 for the temporary use of land for war games, motor sports and clay pigeon shooting does not apply in SSSIs. This means that a planning application is required for all such uses of land within a SSSI, nature conservation and other relevant considerations can, therefore be taken properly into account before the land is so used. It does not mean that no such activities can take place in SSSIs under any circumstances. Some SSSIs are seasonal in their sensitivity, others can accommodate recreational activities without risk to their features of special interest.
 

POLICY CNE8
Development which would have a detrimental effect on a Site of Special Scientific Interest or National Nature Reserve will only be permitted if:

a) it can be subject of conditions that will prevent damaging impacts on wildlife habitats or important physical features; or

b) other material factors are sufficient to override nature conservation considerations.

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Interest on Other Sites
8.55 Government advice in PPG9 recognises that “our natural wildlife heritage is not confined to the various statutory designated sites but is found throughout the countryside and in many urban and coastal areas” (paragraph 14). Paragraph 24 advises that Local Plans should:
  • “identify relevant international, national and local nature conservation interest”; and
     
  • “be concerned not only with designated areas but also with other areas of conservation value and possible provision of new habitats”
8.56 The Council is advised to “have regard to the relative significance of international, national, local and informal designations in considering the weight to be attached to nature conservation interests” and that we “should only apply local designations to sites of substantive nature conservation value”.
8.57 PPG9 recognises three types of site designation which would constitute “sites of regional/local importance”:
a) “Local Nature Reserves” (LNRs) designated by Local Authorities under Section 21 of the National Parks and Access to the Countryside Act 1949;

b) “Non-statutory Nature Reserves” established and managed by a variety of public and private bodies, eg County Wildlife Trusts,

Royal Society for the Protection of Birds; and

c) ‘Sites of Importance for Nature Conservation” or equivalent; the name and status of this type of site varies considerably but they are usually adopted by Local Authorities for planning purposes.
8.58 Within Sedgemoor there are currently two “Local Nature Reserves” and a number of Somerset Wildlife Trust Nature Reserves, i.e. sites recognised in categories a and b in the above list (NB several of these sites are SSSI’s). Sites relevant to the third category are “County Wildlife Sites” and “County Geological Sites” identified by Somerset Environmental Records Centre (SERC). The current extent and location of these “designated sites of Local Nature Conservation Importance” is shown on Figure 8.4. Site boundaries can be identified more precisely by reference to the Proposals Map, but may be subject to change over time. This Local Plan Policy will be applicable to the sites which are identified as a contemporary record at the time when a planning application is being considered.
  Figure 8.4 - Nature Conservation Sites of Regional or Local Importance

Figure 8.4 - Nature Conservation Sites of Regional or Local Importance
Figure 8.4 as a PDF file (230kb)

8.59 County Wildlife Sites are identified by Somerset Environmental Records Centre using selection criteria based on habitats and species. The status of sites is kept under continual review as new information becomes available. The habitats and species are evaluated in a county, national and European context, including reference to the EU Habitats Directive, 1992, National Red Data Book Species and Somerset Notable Species, which in turn take account of county and national rarity. The criteria are consistent with the approach published nationally in the Wildlife Sites Handbook, 2nd Edition, (Wildlife Trusts, 1997).
8.60 The planning system can play a positive part in meeting biodiversity targets for habitat enhancement. The Sedgemoor Biodiversity Action Plan, prepared by Somerset Environmental Records Centre in 1999 and adopted by Sedgemoor provides specific guidance on priority habitats, priority species and Prime Biodiversity Areas. The underlying aim of a Biodiversity Action Plan is to conserve and enhance biological diversity. Sympathetic land management holds the main key and it is the actions of landowners/managers, conservation land-owning organisations and organisations providing financial support for land management which can make the most direct contribution. The planning system will aid the process primarily by safeguarding existing sites of identified nature conservation importance. The District Council will not permit development which would damage or destroy such sites unless there is an overriding need which outweighs the nature conservation value of the site and there is no suitable alternative. Where such development is permitted the impact shall be kept to a minimum and mitigating or compensatory measures provided which would reinstate the nature conservation value of the site.
8.61 The Sedgemoor Biodiversity Action Plan identifies five “Prime Biodiversity Areas” comprising designated wildlife sites and surrounding land which have the greatest potential for species and habitats to increase their range. The Sedgemoor Biodiversity Action Plan also includes habitat action plans for reedbeds, lowland calcareous grassland, coastal sand dunes and coastal/floodplain grazing marsh. However, it also remains the case that there may be worthwhile opportunities throughout the District for sympathetic land management and habitat creation or restoration.
8.62 Where there is a risk of damage to a designated site, the use of conditions or planning obligations in the interests of nature conservation will be considered. Conditions can be used, for example, to require areas to be fenced or bunded off to protect them, or to restrict operations or uses to specific times of year. Planning obligations can accompany permissions in order to secure long-term management, to provide funds for management, or to provide nature conservation features to compensate for any such features lost when development takes place.
8.63 At present there are two local authority-controlled nature reserves in the District, at Berrow Dunes and Screech Owl, Somerset Bridge, Bridgwater. Several other County or District Council sites include County Wildlife Site designations and have been managed or improved with sympathy for local wildlife interest (e.g. Apex Park, Highbridge and Dunwear Ponds, Bridgwater). If appropriate opportunities arise, either in association with development proposals or on Council-owned land, the Council may create additional nature reserves. Site specific advice on such opportunities will be sought from English Nature and Somerset Wildlife Trust and may result in sites which are declared Local Nature Reserves (under the provisions of the National Parks and Access to the Countryside Act 1949) or are managed by another appropriate body such as the Somerset Wildlife Trust.
 

POLICY CNE9
The nature conservation value of land outside nationally designated sites will be a material consideration. Development which would damage:

a) the nature conservation interest of a County Wildlife Site, County Geological Site, Local Nature Reserve or non-statutory Nature Reserve, or

b) natural features such as watercourses, hedgerows, trees, copses and ponds which provide wildlife corridors, links or stepping stones from one habitat to another, will not be permitted unless the need for the development in that location is unavoidable and of overriding importance.

Where planning permission is sought for development which would damage the nature conservation value of a site, such damage should be kept to a minimum and mitigation or compensation measures provided.

Developers are encouraged to make positive provision for wildlife through appropriate habitat creation/restoration and subsequent management. If appropriate opportunities arise, the District Council will establish additional Local Nature Reserves and/or support other bodies in establishing additional nature reserves.

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Protected Species and Priority Species
8.64 Certain plant and animal species, including all wild birds are protected under the 1981 Wildlife and Countryside Act. Additional legislation protects badgers and bats. The protection offered by such legislation is additional to that offered by the planning system, but the presence of protected species is a material planning consideration. In addition to legally protected species there are other wild plants and animals identified in the UK Biodiversity Steering Group Report as “priority species”. Further information on which “priority species” are found locally is available in the Sedgemoor Biodiversity Action Plan. The presence of a “priority species” will be a material consideration when considering proposals which would be likely to result in harm to the species or its habitat. The Sedgemoor Biodiversity Action Plan records the presence of 59 legally protected species and 43 priority species, 13 of which are common to both lists. The Council will expect to be guided by English Nature not only in respect of protected species but also on the appropriate protection or mitigation strategy for any affected priority species.
8.65 Where there is a known or suspected protected or priority species likely to be affected by proposed development the District Council will consult with English Nature. Similarly, if a landowner or prospective developer suspects that there is a protected or priority species on a site, then English Nature should be contacted as soon as possible for advice. English Nature can provide advice on how best to treat protected or priority species. Often, they can be accommodated within development proposals. The necessary accommodation measures should normally be an integral part of the proposal and secured by appropriate planning conditions or planning obligations if necessary.
 

POLICY CNE10
Development proposals which would harm protected or priority species, or their habitats, will only be permitted if the proposal would:

a) facilitate the survival of a sustainable population of the affected species;

b) reduce disturbance to affected species to an acceptable minimum; and/or

c) provide adequate alternative habitats, preferably in situ, to sustain at least the current population levels of affected species.

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Protecting and Enhancing Locally Accessible Green Space
8.66 Policies concerning sites with identified nature conservation importance have been set out above and Policies relating to the recreational value of open spaces are set out in Chapter 11 of the Local Plan, but open spaces take many forms and fulfil a range of functions which require us to look at development and conservation in a more holistic way.
8.67 Over half of the District’s residents live in the Towns of Bridgwater, Burnham-on-Sea and Highbridge. Open spaces and other areas of greenspace in our Towns include:
  • parks and gardens;
  • playing fields, sports grounds and children’s play areas;
  • allotments;
  • churchyards;
  • woodland, hedgerows and individual trees;
  • grass verges and landscaped areas;
  • rivers and river banks;
  • ponds (former brick pits or borrow pits) and associated margins;
  • commons and greens;
  • canal and railway margins, embankments and cuttings;
  • and sand dunes and beaches (at Burnham-on-Sea).
These places have a mix of amenity, recreation, conservation, wildlife and historical value and can make a significant contribution to quality of urban life. Some of the sites are of designated nature conservation importance, but even those which carry no official designation can have a part to play in meeting important local needs. As the South-West Regional Biodiversity Action Plan (1997) observes: “Biodiversity in urban areas is important in its own right for its ecological value, but also brings other environmental, social and economic benefits. Trees can help to clear up airborne pollution, working on practical conservation projects can pull local communities together, being able to see natural landscapes has been shown to help people recover more quickly from illness. People in urban areas benefit from daily contact with wildlife, the quiet enjoyment of nature provides a break from the stresses of modern city life and can increase people’s feeling of well-being and pride in their local area”.
8.68 The revised version of PPG17 “Planning for Open Space, Sport and Recreation” (July 2002) advocates that local authorities should undertake robust assessments of need and audits of existing open space and recreational facilities. The Annex to PPG17 includes a typology which illustrates the broad range of open spaces that may be of public value and recognises that many areas can perform multiple functions. The types of space identified at paragraph 8.67 are consistent with that typology. Policy CNE11 was conceived before the suggestion of comprehensive assessment and audit was introduced in PPG17 and no such assessment for Sedgemoor has yet been undertaken, but on an interim basis the Policy is considered to be broadly consistent with the new PPG17.
8.69  The Council will:

a) expect the landscaping of new developments (whether on greenfield or brownfield sites) to make a positive contribution to future urban greenspace and habitat through such measures as the use of native trees and shrubs, and the retention of hedgerows and watercourses as wildlife corridors; and

b) seek land and/or other appropriate contributions for the creation of new (or improvement of existing) wildlife areas or natural greenspace.

 

POLICY CNE11
Development within and around settlements should respect the amenity, recreation, conservation, wildlife or historical value of existing greenspace and where possible enhance the stock of such environmental assets by:

a) appropriate restoration, enhancement and management of existing sites; and/or

b) improving public access; and/or

c) creating new greenspace sites.

These considerations will be particularly important within and around the urban areas of Bridgwater, Burnham-on-Sea and Highbridge but may also be relevant elsewhere in the District.

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Trees, Hedgerows and Woodlands
8.70 Trees and hedgerows are important for their intrinsic beauty, their contribution to the landscape or townscape, their role in absorbing carbon dioxide, screening eyesores or softening the appearance of new development and their value for wildlife. It is important that trees, hedgerows and woodlands are protected especially as new tree planting takes many years to make a significant effect on the landscape. The Council’s development control powers can be used to secure new planting and the retention of existing trees and hedgerows where appropriate on a new development site. Tree Preservation Order powers are also available beyond development sites. Concerns about the lack of control over the removal of hedgerows in the countryside led to new legislation in 1997, but the Council’s powers to issue a Hedgerow Retention Notice are limited to those circumstances where a hedgerow meets specific criteria for historic or wildlife importance. Issues relating to the management of hedgerows in general are outside the scope of the planning system but positive management is encouraged through other initiatives such as the work of the Somerset Farming and Wildlife Advisory Group (FWAG) and the Somerset Hedge Group, both of which are supported by the District Council. The Council will therefore, expect proposals for development and redevelopment of land to include appropriate measures for retention of existing vegetation.
8.71 Where existing trees or hedgerows form a significant feature of development or redevelopment sites, the Council will:

a) require a survey showing their position, size and species (in accordance with the provisions of Standard BS.5837);

b) expect plans for new development to provide for the retention of existing suitable trees and hedgerows;

c) where appropriate, serve Tree Preservation Orders to ensure the continuing protection of important trees; and

d) impose conditions on planning permissions to ensure that adequate protection is given to retained trees and hedgerows during site clearance and building operations (in accordance with Standard BS.5837).

8.72 Landscape design as an element of the design and layout of development sites is dealt with in the Built Environment Chapter (Policy BE9, Policy BE10, Policy BE11, Policy BE12).
8.73 In the context of this policy “important”trees and hedgerows may include those that have an intrinsic value for landscape, townscape, historical or nature conservation reasons and/or have significance in a development context by providing amenity or screening. New planting should have regard to location, ground conditions and local landscape context and should normally be comprised of native, locally-occurring trees and shrubs or suitable introduced species (see Appendix 8.2  for a guide to potentially suitable species). If the removal of trees or hedgerows is permitted as part of a development, a planning condition may require that an equivalent number of appropriate trees and shrubs be planted on or near the site.
 

POLICY CNE12
In considering proposals for development, the Council will seek to protect important trees and hedgerows. Planning permission may be refused where these would not be retained, or acceptably replaced. The Council will also encourage the planting and proper management of new trees and shrubs.

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Woodland Management
8.74 It is essential that woodlands are not only protected from development but are properly managed in order to enhance their amenity and nature conservation value and in appropriate cases, their commercial value. The District Council will use its powers to make Tree Preservation Orders where trees and woodland of amenity value are under threat and will take action against anyone destroying or damaging a protected tree. Protection is also afforded to trees and woodlands by the Forestry Acts and Regulations.
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Tree Planting Grants
8.75 The Forestry Authority’s Woodland Grant Scheme provides the main grant aid to encourage all woodland establishment and management. Where resources are available, the District Council offers grants for planting native trees on local authority or privately owned land. To qualify for grant aid the scheme must have public benefit, usually this means it should be visible from a public right of way or from the highway. The District Council will ensure that proposed planting schemes do not conflict with nature conservation and archaeological interests.
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Tree Planting Schemes
8.76 New tree planting will be encouraged in both urban and rural areas to enhance the local environment, with particular priority to improving the extent and quality of tree cover in the following areas:
  • where a serious tree loss has occurred and needs to be replaced;
     
  • where the environmental quality of new development would be enhanced;
     
  • where local amenity requires protection and/or screening from major development projects, main communication arteries and ‘ bad neighbour’ industries and activities; and
     
  • where a significant contribution can be made to improving the scenic, visual or wildlife quality of a landscape area or historic heritage area or feature, or a countryside leisure or recreation facility.
8.77 New tree planting should comprise broad-leaved species appropriate to the area, be well sited and designed relative to its surroundings and setting, facilitate subsequent care and management, and have no adverse affect on the conservation of the natural environment and historic and architectural heritage.
8.78 The District Council has identified a number of locations where opportunities for tree planting and structural landscaping schemes may be targeted during the Plan period:

a) approaches to Towns and landscape improvements to major roundabouts including Edithmead Roundabout (M5 Junction 22) and Dunball Roundabout (M5 Junction 23);

b) screening of existing industrial development on land near to the M5 north-east of Bridgwater and Walrow Estate, Highbridge;

c) in the vicinity of proposed new roads at Bridgwater (Northern Distributor Road) and Cheddar;

d) areas of countryside where serious tree loss has occurred due to the impact of Dutch Elm Disease; and

e) in the vicinity of caravan and camping sites at Brean and Berrow.

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The Water Environment and Flood Risks
Development on Floodplains and in other Flood Risk Locations
8.79 Planning Policy Guidance Note 25 (PPG25) ‘Development and Flood Risk’ provides guidance on how flood risk should be considered at all stages of the planning and development process in order to reduce future damage to property and loss of life. This includes applying a risk-based approach through a sequential test which takes account of the level of risk at different levels of flood zone hierarchy (Zones 1, 2 and 3 of PPG25 Table 1). PPG25 recognises that the Environment Agency has not fully defined such flood zones. Floodplain mapping shown on Figure 8.5 represents information available from the Environment Agency at the time of the Local Plan Public Inquiry/Modifications stage.
  Figure 8.5 - Indicative Floodplains

Figure 8.5 - Indicative Floodplains
Figure 8.5 as a PDF file (134kb)

8.80 Environment Agency flood risk mapping is continuing to evolve. Indicative floodplain mapping was previously shown on the Local Plan Proposals Map but now the preferred approach is to rely upon electronic mapping provided by the Environment Agency and installed on the Council’s Geographic Information System. This information will be updated periodically; to check the latest flood map data visit the Agency’s website:- www.environment-agency.gov.uk and follow the flood map link or telephone the Agency on 08708 506506.
8.81 Substantial areas of Bridgwater, Burnham-on-Sea and Highbridge are in the tidal floodplain but the standard of existing defences gives most of these areas protection against all but the most severe floods (0.5% annual probability of occurrence). In the event of these defences being overtopped or breached, flooding could be extensive but relatively shallow and the Environment Agency have advised that all new buildings should have suitably raised floor levels in order to reduce water inundation problems, which might arise if defences are overtopped or breached. Raised floor levels and other flood resistant construction measures are also likely to be required in other floodplain locations. In accordance with the advice in PPG25 (paragraph 60 and Appendix F) applicants should carry out an assessment of flood risk and the run-off implications of their proposals that is appropriate to the scale and nature of the development and the risks involved and submit this with the planning application.
8.82 Predicted sea level rises and increased storminess arising from global warming and climatic change pose a particularly serious threat to Sedgemoor. This is because of a naturally soft coastline and the extent of low-lying land which is below high tide level. The area was seriously affected by tidal flooding in December 1981 and despite subsequent improvements of the sea defences, the existing defences do not provide complete protection to the new “once in 200 years” standard. The current sea defence strategy was decided as a component of the Bridgwater Bay to Bideford Bay Shoreline Management Plan (June 1998) prepared by consulting engineers on behalf of the Environment Agency and the relevant coastal Local Authorities. Extracts from a consultation leaflet published in 1998 describing the strategy for sections of our coast are reproduced at Appendix 8.3. Any detailed queries should be referred to the Council’s Land Drainage Manager.
8.83 From a Development Plan perspective, the Shoreline Management Plan Strategy aims to generally protect existing land uses, with “possible retreat” being considered only on undeveloped frontages between Stolford and Steart Point. However, the risk of serious flooding in extreme conditions clearly affects extensive areas and will be a development constraint.
 

POLICY CNE14
Development will not be permitted on “high risk” floodplain land unless:

a) an appropriate flood risk assessment has demonstrated that the level of risk is lower than that implied by the indicative floodplain mapping; or

b) flood water would not adversely affect the development; and

     i) the capacity of available flood storage would not be reduced;

     ii) the flood water and flows would not be impeded; and

     iii) the flooding risks elsewhere would not be increased; or

c) there is no suitable alternative location and proposal includes appropriate and environmentally acceptable flood protection measures; or

d) the proposal is itself an appropriate and environmentally acceptable flood protection scheme to protect existing development.

 

POLICY CNE14A
All new development proposals within identified floodplains or other flood risk locations should be subject of an appropriate flood risk assessment. Any new properties built within a floodplain (including areas of floodplain protected by flood defence schemes) should have finished floor levels set at least 0.5 metres above surrounding ground levels and any other necessary additional flood mitigation measures.

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Land Drainage
8.84 Much of Sedgemoor District is formed by the low-lying “Levels and Moors”, drained by a complex network of semi-natural and man-made watercourses. Responsibility for land drainage and flood protection is shared between the Environment Agency, Internal Drainage Boards and to a lesser extent the District Council:
  • the Environment Agency is responsible for those waterways which are part of the designated “main river” system;
     
  • a Drainage Board has powers to undertake works and to control works carried out by third parties on any watercourse within its district other than “‘main river”, but it is usually concerned with those watercourses on which it carries out regular maintenance.
    These are known as “viewed rhynes” and form the major network into which other “field”ditches (maintained by the riparian owners) and surface water sewers can successfully drain; and
     
  • the District Council has similar powers to Drainage Boards under land drainage legislation in respect of watercourses outside a Drainage District.
8.85 The Drainage Authorities have to manage an often-complex system. Large parts of the District are dependent on effective land drainage for both developed and agricultural land use. Water levels and flows are managed to meet a range of agricultural, conservation and recreational interests and controlled to minimise the risk of flood damage.
8.86 It is important to ensure that new development does not create or exacerbate flood risks. Whilst the low-lying parts of the District are perhaps most vulnerable, the potential risks from intensified surface water run-off could be a significant issue elsewhere either because of a localised problem or because of the threat to land downstream which may be some distance away. The Council will consult with the Environment Agency and the Council’s Land Drainage Manager, who will additionally refer applications to the relevant Drainage Board as appropriate. In particular, it will be necessary to ensure that:

a) development does not impede access to carry out necessary watercourse maintenance work (Drainage Board bylaws commonly specify a minimum margin);

b) surface water run-off is dealt with in ways which minimise the risk of flooding and pollution; and

c) nature conservation and landscape issues are taken into account.

8.87 Surface water run-off from urban development has in the past tended to be drained directly to a piped drainage system and discharged to an available watercourse. In some instances it has been necessary to undertake major off-site works (e.g. enlarged culverts) to improve the capacity of receiving watercourses or create flood lagoon sites for temporary retention of storm water and flow attenuation. “Best practice” approaches which deal with rainfall as a resource rather than as a problem which needs to be disposed of, will be encouraged, e.g.:

a) soakaway drainage and permeable surfacing of hardstandings to recharge ground water;

b) rainwater storage for garden watering; and

c) treating ponds, open watercourses and wetlands as multi-purpose features performing not only drainage functions but also providing a landscape and habitat resource.

Further guidance on a range of sustainable drainage system options which may be practicable is set out in Appendix E of PPG25 “Development and Flood Risk”. The choice of appropriate measures will have to take account of local drainage and ground conditions. In some instances, development may necessitate substantial changes to existing drainage channels or the creation of new watercourses. Prospective developers are advised to contact the Council’s Coastal and Land Drainage Manager, the relevant Internal Drainage Board and the Environment Agency for advice at an early stage.
8.88 Proposals should also consider how contaminated surface water will be dealt with, the natural cleansing capability of reed beds may be particularly appropriate and again could be part of a multi-purpose approach to the landscape treatment of development sites.
 

POLICY CNE15
Development will not be permitted if:

a) it would increase the risk of flooding as a result of changes in surface water run-off; or

b) adversely affect water quality.

Groundwater Source Protection Zones and Aquifers
8.89 Groundwater Source Protection Zones have been defined by the Environment Agency in order to prevent contamination of groundwater which feeds an aquifer. If such water resources become contaminated rehabilitation can be extremely difficult or even impossible. A restrictive development control policy is therefore necessary and the zones are shown on the Proposals Map (in the Mendip Hills above Axbridge and Cheddar and a small area near Nether Stowey).
8.90 Groundwater Source Protection Zones are the particularly vulnerable areas in which development could cause a hazard to important water sources. In addition to these zones, the Environment Agency advise that developments which involve potential disturbance of other aquifers must also be given careful consideration. Major and minor aquifers as defined by the Environment Agency, and reflecting underlying geology, are shown in Figure 8.6. These aquifers are not shown on the Proposals Map but potential relevance to individual sites can be checked via the Council’s Geographic Information System.
  Figure 8.6 - Aquifers

Figure 8.6 - Aquifers
Figure 8.6 as a PDF file (180kb)

8.91 All planning applications in the defined zones will be referred to the Environment Agency for their advice, but prospective applicants should also seek guidance from the Environment Agency prior to submission of a planning application. Examples of developments which would need particular careful consideration are:
  • septic tanks;
     
  • storage tanks for hydrocarbons or other chemicals;
     
  • the manufacture, storage or use of organic chemicals; and
     
  • any development which could give rise to contaminated surface water and/or foul or treated sewage effluent.
 

POLICY CNE16
Development will not be permitted within a defined Groundwater Source Protection Zone or on a major or minor aquifer unless safeguards are provided against the possible contamination of groundwater and/or interference with groundwater flows and levels.

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Coastal Zone Management
8.92 Sedgemoor’s coastline is part of the Severn Estuary that is one of Britain’s largest estuaries and has the second highest tidal range in the world. A large proportion of the estuary is of designated International Nature Conservation Importance, but the coast is also important for tourism and recreational activities. The surrounding urban and industrial developments add demands and pressures on the coastal area. An estuary management project, the “Severn Estuary Strategy” was set up in 1995 and is working towards providing a non-statutory management framework for the Severn Estuary in line with integrated coastal management principles. The project is proceeding in partnership with the Environment Agency and it is anticipated that the completed “Strategy for the Severn Estuary” and associated “Action Plans” will be produced jointly with the Environment Agency and serve as the “Local Environment Agency Plan” documents for the Severn Estuary. As a separate but related exercise English Nature are co-ordinating the preparation of a management scheme for the Severn Estuary in anticipation of its designation as a European Marine Site. This will help the wide range of relevant authorities meet responsibilities that arise if the Estuary is also designated.
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