Part One: Spatial Strategy and Policies (Regulation 18)
Provision, retention and protection of trees, woodlands, and hedgerows
11.35 Section 197 of the Town and Country Planning Act 1990 places a duty on the Local Planning Authority to secure the planting of new trees. Dudley Council will secure the planting of new trees in locations where they will complement the surrounding architecture and the local landscape. and ensuring that the species of tree planted is suitable for each location.
11.36 A main theme of the Government's 25-Year Environment Plan is the need to plant more trees. This is to be achieved not only as part of the creation of extensive new woodlands but also in urban areas; this will be accomplished in part by encouraging businesses to offset their emissions in a cost-effective way through planting trees. The national ambition is to deliver one million new urban trees and a further 11 million new trees across the country by 2060.
(10) Policy DLP33 Provision, retention and protection of trees, woodlands, Ancient Woodland, and Veteran trees
Retention and protection of trees and woodland
- Development that would result in the loss of or damage to ancient woodland will not be permitted. Development adjacent to ancient woodland will be required to provide an appropriate landscaping buffer, with a minimum depth of 15m[13] and a preferred depth of 50m.
- Development that would result in the loss of or damage to ancient or veteran trees will not be permitted. Veteran or ancient trees likely to be impacted by development should be protected, by the provision of a buffer around them of a minimum of 15 times the diameter of the tree (as measured in accordance with the appropriate standard). The buffer zone should be 5m from the edge of the tree's canopy if that area is larger than 15 times its diameter[14].
- There will be a presumption against the removal of trees that contribute to public amenity and air quality management unless sound arboricultural reasons support their removal[15]. Where removal is unavoidable, replacement trees must be provided to compensate for their loss, on a site-by-site basis in conjunction with the LPA.
- The planting of new, species diverse, trees and woodlands will be sought, in appropriate locations, to increase the extent of tree canopy cover in Dudley to a minimum of 20%.
Habitat Creation
- All available data on extant tree canopy cover and associated habitat[16] will be considered when making decisions on the proposed loss of trees and woodland to accommodate infrastructure and other development proposals. All major developments must deliver a minimum of 20% canopy cover, with the emphasis on retaining existing established trees.
- In areas where evidence demonstrates that current levels of tree canopy cover are low, proposals that incorporate additional tree planting, to increase existing levels of habitat and urban tree canopy cover to above the required minimum of 20% will be considered positively, as part of the wider contribution to biodiversity net gain, where such planting would not adversely affect areas with recognised ecological or biodiversity value that would be damaged or destroyed by tree planting[17].
- Tree species identified as being resilient to predicted climate change and pests and diseases are to be favoured in landscaping schemes or as replacement planting, to maximise habitats for local wildlife/species and maintain and increase biodiversity. This should be achieved through a mix of native and non-native species to maintain a healthy and diverse tree population.
- Opportunities for increasing tree provision through habitat creation and the enhancement of ecological networks, including connecting areas of ancient woodland, will be maximised, in particular by means of the biodiversity net gain and Nature Recovery Network initiatives (see Policy DLP32).
Trees and development
- Development must be designed around the need to incorporate trees already present on site, using sensitive and well-designed site layouts to maximise their retention. No design work, however conceptual, should start until the tree constraints associated with a development site are well understood.
- An arboricultural survey, carried out to the appropriate standard BS5837:2012 (BS5837:2012 - Trees in relation to Design, Demolition and Construction, BSI: London) should be undertaken prior to removal of any vegetation or site groundworks and used to inform a proposal's layout at the beginning of the design process.
- Existing mature trees[18], trees that are ecologically important, and ancient/veteran trees, must be retained and integrated into the proposed landscaping scheme, recognising the important contribution of trees to the character and amenity[19] of a development site and to local green infrastructure networks.
- In addition to meeting the requirements for replacement trees on sites and biodiversity net gain, new tree planting must be included in all new residential developments and other significant proposals[20], as street trees or as part of landscaping schemes with suitable planting specifications for trees in hard landscapes.
- Development proposals should use large-canopied species where possible, which provide a wider range of health, biodiversity and climate change mitigation and adaptation benefits because of their larger surface area as well as making a positive contribution to increasing overall tree canopy cover [21].
- Consideration must be given to the suitability of planting positions in proximity to adjacent constructions, such as walls and buildings, to avoid the risk of structural damage occurring as trees grow and mature.
- Ensure both existing and new trees have a suitable growing environment with adequate space allowed to reach their mature height and spread without causing nuisance to built structures and their occupants.
- To enable trees to reach their optimum size, a sufficient soil volume must be available to the root system. The soil type, including drainage, must be such that tree roots are able to grow and function adequately.
- Plan and sufficiently resource post planting care for three to five years as detailed in BS8545:2014. (British Standard 8545:2014 Trees: from nursery to independence in the landscape – Recommendations. BSI: London).
- Details of instructions for householders regarding their planning liability and maintenance of trees planted in private gardens for major developments must also be provided.
- To show new tree planting has been undertaken in accordance with the approved details and plans; the applicant must submit to the Council a verification document from the landscape consultant confirming the works are completed as approved. This shall include confirmation of tree pits, ground preparation and photographs of the trees after planting. Without such proof of planting, the developer will have a continued obligation to plant or replace any trees in the approved plans.
- All planting proposals must demonstrate that they:
- have been designed to use suitable species.
take account of the need for biosecurity, including control of non-native invasive species; and - ensure all planting stock is supplied free of pests or pathogens.
- have been designed to use suitable species.
- All new major developments must make a minimum contribution of 20% tree canopy cover across the development site (estimated growth 25-years from planting)[22] To be monitored annually using Blueskys National Tree Map and GIS Data
- New houses and other buildings must be carefully designed and located to prevent an incompatible degree of shade[23] being cast by both existing and new trees that might result in future pressure for them to be removed.
- The positioning of trees in relation to streets and buildings should not worsen air quality for people using and living in them. Care should be taken to position trees and / or design streets and buildings in a way that allows for street-level ventilation to occur, to avoid trapping pollution between ground level and tree canopies (see Policy DLP44)
- Where planning permission has been granted that involves the removal of trees, agreed replacement trees of a suitable size and species must be provided onsite. Where sufficient and suitable onsite replacements cannot be provided, off-site planting or woodland enhancement, including support for natural regeneration, in the near vicinity of the removed tree(s) must be provided, in line with the mitigation hierarchy. Appropriate planning conditions will be used to secure timely and adequate alternative provision and ongoing maintenance.
- Replacement trees located off-site must not be planted where they would impact on areas designated as ecologically important unless this has been specifically agreed with the relevant authority and its ecological officers / advisers.
- Trees proposed for removal during development must be replaced commensurate with the size, stature, rarity, and public amenity of the tree(s) to be removed. Where trees to be replaced form a group of amenity value (rather than individual specimens), replacement must also be in the form of a group commensurate with the area covered, size and species of trees and established quality of the original group and, where possible, located in a position that will mitigate the loss of visual amenity associated with the original group[24].
- Where proposed development will impact on the protection, safety and / or retention of a number of trees, or on the character and appearance of trees of importance to the environment and landscape, the use of an Arboricultural Clerk of Works[25] will be required, to be made subject to a condition on the relevant planning permission.
Justification
11.37 It is important to encourage and support the delivery of green infrastructure and ecological networks through urban areas, especially in relation to their role in climate change mitigation and adaptation and to mitigate the health problems associated with air pollution. The provision of new trees and the protection of existing ones throughout the borough will be a key component of this approach.
11.38 The principal aim will be to increase the borough's urban canopy cover to at least 20% over the plan period[26]. If the Canopy Cover Balance on a Major Development site is less than 20%, new canopy must be provided based on data establishing its current levels of provision[27] and identifying opportunities for doing so derived from the Black Country Nature Recovery Network and biodiversity net gain targets.
11.39 Canopy cover area can be calculated in two ways:
- By entering the canopy radius, using cardinal four points of the compass, for individual trees.
- By entering the area for groups of trees using CAD or GIS to measure the area.
11.40 The entire existing canopy for a tree or tree group can be included if it:
- Is entirely within the site.
- Will have no planned tree surgery works.
- The Root Protection Area (RPA) will not be encroached upon by development and associated works.
- and Trees based outside the site must not be included in calculations if their BS5837:2012[2] categorisation is 'U' (those in such a condition that they cannot realistically be retained as living trees in the context of the current land use for longer than 10 years).
11.41 When two or more trees overlap, measurements must ensure that these areas are not double counted.
11.42 On minor developments, the Council will use a fixed number system to secure new trees in replacement for proposed tree removals. This will only be acceptable where the Council is satisfied that the applicant has demonstrated exceptional justification for their proposed removal(s). The requirement will apply to A and B category trees, category C trees will be replaced on a 1:1 basis.
11.43 Table 11.1 is based on a publication by Forest Research and on work by arboriculturists Sharon Durdant-Hollamby and Luke Fay (Hand, K. and Doick, KJ (2021). Ecosystem service provision by urban trees: informing species selection. Farnham, UK: Forest Research).
11.44 The table is a simplified formula based on the original study; it sets out that the number of replacement trees required is dependent on the length of time it will take the replacement planting to reach the equivalent service provision of each felled tree. The replacement trees are assumed to be 7 years old at planting and planted in the same conditions. Benefit provision is calculated at 10 years post-planting, when the replacement trees are 17 years old. (This does not apply to ancient or veteran trees)
Table 11.1 Replacement Tree Planting Targets for New Developments
Stem Diameter of Tree Proposed for Removal* |
Number of Replacement Trees Required |
150 – 199 mm |
1 |
200 – 299 mm |
2 |
300 – 399 mm |
3 |
400 – 499 mm |
4 |
500 – 599 mm |
5 |
600 – 699 mm |
6 |
700 – 799 mm |
7 |
800 mm + |
8 |
*Measured at 1.5 metres above ground level, in accord with British Standard 5837:2012 "Trees in Relation to Design, Demolition and Construction – Recommendations".
Hedgerows
11.45 The planting of hedgerows not only enhances opportunities for wildlife but can also significantly improve the appearance of new development. It is particularly suitable on frontages and along plot and site boundaries, both softening the appearance of the built form and supplementing the design of the overall scheme.
(11) Policy DLP34 Provision, retention, and protection of Hedgerows
- Under The Hedgerows Regulation 1997 protection is afforded to hedgerows of more than 20 metres in length or which join other hedgerows, provided they adjoin agricultural land, forestry, paddocks, common land, village greens, a site of special scientific interest or a local nature reserve.
- There will be a presumption against the wholesale removal of hedgerows for development purposes, especially where ecological surveys have identified them to be species-rich and where they exist on previously undeveloped land.
- Hedgerow retention and reinforcement will be of particular importance where hedgerows form part of an established ecological network enabling the passage of flora and fauna into and out of rural, peri-urban, and urban areas. If hedgerow removal is needed to accommodate a high-quality site layout, replacement hedgerow planting will be required.
- Protection of hedgerows before and during development must be undertaken. This will include: the provision of landscape buffers where appropriate; protective fencing and temporary ground protection during the construction phase; and careful management of plant and materials on site to avoid damage to the hedgerow(s) and its root system.
- New hedgerows will be sought as part of site layouts and landscaping schemes where appropriate and must include a suitable mixture of species that are able to withstand climate change and promote local biodiversity.
Because of the nature of the sources, set out above, it is expected that updates will become available over the lifetime of this Document. Applicants are expected to be aware of, and work to, any updates of relevant guidance and scientific evidence.
Justification
11.46 Hedgerows are integral to ecological networks, given their linear form, and will be essential elements of habitat linkages within and beyond the Black Country. Planting additional hedgerows will help to support and increase the movement of wildlife and plants through the Black Country. The planting of bare root plants is an economical way of providing green infrastructure on sites.
11.47 Geodiversity and the Black Country UNESCO Global Geopark
11.48 The geology of Dudley and the wider Black Country is very rich in industrial minerals. Limestone, ironstone, fireclay, and coal provided the ingredients to make iron and paved the way for an intense and very early part of the Industrial Revolution to begin in the area.
11.49 The Black Country UNESCO Global Geopark was declared on Friday 10 July 2020. The Executive Board of UNESCO confirmed that the Black Country had been welcomed into the network of Global Geoparks as a place with internationally important geology, because of its cultural heritage and the extensive partnerships committed to conserving, managing and promoting it. The boundary of the Black Country UNESCO Global Geopark is the same as that of the Black Country itself. There are forty five 'Geosites' located across the Black Country with sixteen of these falling within Dudley.
11.50 A UNESCO Global Geopark uses its geological heritage, in connection with all other aspects of the area's natural and cultural heritage, to enhance awareness and understanding of key issues facing society in the context of the dynamics of modern society, mitigating the effects of climate change and reducing the impact of natural disasters. By raising awareness of the importance of the area's geological heritage in history and society today, UNESCO Global Geoparks give local people a sense of pride in their region and strengthen their identification with the area. The creation of innovative local enterprises, new jobs and high-quality training courses is stimulated as new sources of revenue are generated through sustainable geotourism, while the geological resources of the area are protected.
(2) Policy DLP35 Geodiversity and the Black Country UNESCO Global Geopark
- Development proposals should:
- Wherever possible, make a positive contribution to the protection and enhancement of geodiversity, particularly within the boundaries of the Black Country UNESCO Global Geopark and in relation to the Geosites identified within it.
- Be resisted where they would have significant adverse impact on the Geopark Geosites or other sites with existing or proposed European or national designations in accordance with Government guidance.
- Give locally significant geological sites[28] a level of protection commensurate with their importance.
- Take into account, and avoid any disruption to, the importance of the inter-connectivity of greenspace and public access between Geosites within the boundary of the Black Country UNESCO Global Geopark.
- Dudley will through the relevant mechanisms:
- Establish clear goals for the identification of areas of anticipated exceptional geological heritage, for the management of known, identified sites (both individually and as part of a network) to promote access to, appreciation and interpretation of geodiversity.
- Ensure geological sites of international, national or regional importance are clearly identified.
- Proposals affecting geological features should also refer to policy DLP52 The Borough's Geology.
Justification
11.51 The NPPF requires local authorities to protect sites of geological value, "… in a manner commensurate with their statutory status or identified quality in the development plan". The Overarching National Policy Statement for Energy[29] states that development should aim to avoid significant harm to geological conservation interests and identify mitigation where possible; effects on sites of geological interest should be clearly identified.
11.52 Areas of geological interest also form significant facets of the industrial landscapes of the borough and the wider Black Country. They reflect the area's history of mining and extraction and will often co-exist with, and form part of the setting of, protected / sensitive historic landscapes. In many cases they also form an intrinsic part of the green infrastructure network, contributing to landscape and ecological diversity as part of the wider natural environment.
11.53 As part of this strategic network of green infrastructure, Geosites should be retained wherever possible and their contribution to green infrastructure recognised and taken into account when development is proposed that would affect the areas, they form part of.
11.54 New development should have regard to the conservation of geological features and should take opportunities to achieve gains for conservation through the form and design of development.
11.55 Where development is proposed, that would affect an identified geological site, the approach should be to avoid adverse impact to the existing geological interest. If this is not possible, the design should seek to retain as much as possible of the geological interest and enhance this where achievable, for example by incorporating permanent sections within the design, or creating new interest of at least equivalent value by improving access to the interest.
11.56 The negative impacts of development should be minimised, and any residual impacts mitigated.
UNESCO Global Geoparks
11.57 A UNESCO Global Geopark[30] is a single, unified geographical area where sites and landscapes of international geological significance are located. It is an area of geological significance, managed with three main objectives in mind:
- to protect the geological landscape and the nature within it;
- to educate visitors and local communities; and
- to promote sustainable development, including sustainable tourism.
11.58 All the UNESCO Global Geoparks contain internationally significant geology and are managed through community-led partnerships that promote an appreciation of natural and cultural heritage while supporting the sustainable economic development of the area.
11.59 UNESCO Global Geopark status is not itself a Statutory Designation, although a number of the Geosites are designated heritage assets e.g. Red House Glass Cone, Saltwells and Wrens Nest and Castle Hill are Scheduled Monuments.
Evidence
- Black Country Global Geopark
- Black Country Historic Landscape Characterisation Study (2019)
Delivery
- Geopark Management Team, delivering aims of the Geopark
[13] Natural England and Forestry Commission guidance, January 2022
[14] Natural England and Forestry Commission guidance, January 2022
[15] The tree is a clearly identified and immediate threat to human safety; disease is significantly impacting the tree's longevity and safety; the tree is causing clearly evidenced structural damage to property where remedial works cannot be undertaken to alleviate the problem; the tree is creating a clearly identified danger or causing significant damage to the adopted highway / footpath network.
[16] e.g. from the local ecological records centre
[17] See also Local Nature Recovery Network Strategy
[18] Health and status as assessed in a report produced by an accredited arboriculturist
[19] National planning guidance identifies trees worthy of retention on amenity grounds (through use of a TPO) as those that are visible in part or whole from a public place and / or those with individual, collective, and wider impact (in terms of size, form, future potential, rarity, cultural / historic value, landscape contribution and / or contribution to a conservation area). Other factors such as value for nature conservation and climate change may also be considered.
[20] E.g., new infrastructure, non-residential development, town centre regeneration and other similar schemes
[21] The area of ground covered by trees when seen from above.
[22] England's Urban Forests; Using tree canopy cover to secure the benefits of the urban forest – Urban Forest and Woodland Advisory Committee Network
[23] This will be in the context of the requirements outlined in policies elsewhere in this plan on the role of trees in mitigating climate change and providing appropriate levels of shade and cooling.
[24] I.e., as close as possible to the site of the removed trees.
[25] The Arboricultural Clerk of Works is a suitably qualified arboriculturist acting on behalf of the developer. They will be engaged to monitor and oversee the implementation of the works required within the protection area of a retained tree / trees.
[26] See also the Woodland Trust's Emergency Tree Plan 2020 - How Trees Fight Climate Change
[27] Tree cover in Dudley is currently around 17% of the total area - Source National Tree Map Data
[28] Many of which are identified as Sites of Local Importance for Nature Conservation (SLINCs) or Sites of Importance for Nature Conservation (SINCs) – see policy DLP31, and / or lie within areas of significant historic value, such as conservation areas, registered parks and gardens or other parts of Dudley's historic landscape – see Policy DLP55 - Historic Character and Local Distinctiveness of Dudley.
[29] Paragraph 5.3.7