Preliminary Arboricultural Impact Assessment€¦ · Protected Species 2.3 Nesting birds are...
Transcript of Preliminary Arboricultural Impact Assessment€¦ · Protected Species 2.3 Nesting birds are...
BARROW LANDSCOMPANY LIMITED
Preliminary Arboricultural Impact Assessment
Prepared by Bowland Tree Consultancy LtdJune 2012
PROPOSED DEVELOPMENT OF LAND TO THE WESTOF WHALLEY ROAD, BARROW, LANCASHIRE
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PRELIMINARY ARBORICULTURAL IMPACT ASSESSMENT LAND OFF WHALLEY ROAD, BARROW
Control sheet
Project No.: BTC272
Project Title: Preliminary Arboricultural Impact Assessment - Land off Whalley Road, Barrow
Client: The Barrow Lands Company Ltd
Agent: David Lock Associates
Local Planning Authority: Ribble Valley Borough Council
Date of Original Survey: March & April 2010
Date of Survey Review: December 2011
Prepared by: Phill Harris MSc BSc(Hons) HND CEnv MArborA MICFor Chartered Arboriculturist
Date of Issue: 28 June 2012
Status: Final
Version No: 1
Revisions: 0
Contact Details
Bowland Tree Consultancy Ltd 21 Meadowside Grindleton Clitheroe Lancashire BB7 4RR
T: 01200 441117 E: [email protected]
DISCLAIMER
Survey Limitations: Unless otherwise stated all trees are surveyed from ground level using non-invasive techniques, in sufficient detail to gather data for and inform the design of the current project only. The disclosure of hidden crown and stem defects, in particular where they may be above a reachable height or where trees are ivy clad or in areas of ground vegetation, cannot therefore be expected. All obvious defects, however, are reported. Detailed tree safety appraisals are only carried out under specific written instructions. Comments upon evident tree safety relate to the condition of said tree at the time of the survey only. Unless otherwise stated all trees should be re-inspected annually in order to appraise their on-going mechanical integrity and physiological condition. It should, however, be recognised that tree condition is subject to change, for example due to the effects of disease, decay, high winds, development works, etc. Changes in land use or site conditions (e.g. development that increases access frequency) and the occurrence of severe weather incidents are also significant considerations with regards tree structural integrity and trees should therefore be re-assessed in the context of such changes and/or incidents and inspected at intervals relative to identified and varying site conditions and associated risks.
Where trees are located wholly or partially on neighbouring private third-party land then said land is not accessed and our inspection is therefore restricted to what can reasonably be seen from within the site. Stem diameters of trees located on such land are estimated. Any subsequent comments and judgments made in respect of such trees are based on these restrictions and are our preliminary opinion only. Recommendations for works to neighbouring third-party trees are only made where a potential risk to persons and/or property has been identified during our survey or, if applicable, where permissible works are required to implement a proposed development. Where significant structural defects of third-party trees are identified and associated management works are considered essential to negate any risk of harm and/or damage then we will first attempt to inform the site occupier of the issues and, if not possible, then inform the relevant Council. Where a more detailed assessment is considered necessary then appropriate recommendations are set out in the Tree Survey Schedule.
Where tree stem locations are not included on the plan(s) provided then they are plotted at the time of the survey using, where appropriate and/or practicable, a combination of measurement triangulation and GPS co-ordination. Where this is not possible then locations are estimated. Restrictions in these respects are detailed in the report.
The potential influence of trees upon buildings or other structures resulting from the effects of their roots abstracting water from shrinkable load-bearing soils is not considered herein. The advice of a structural engineer should be sought with regard to appropriate foundation depths for new buildings with reference to NHBC Standards Chapter 4.2 (NHBC, 2008).
Copyright & Non-Disclosure Notice: The content and layout of this report are subject to copyright owned by Bowland Tree Consultancy Ltd, save to the extent that copyright has been legally assigned to us by another party or is used by Bowland Tree Consultancy Ltd under license. This report may not be copied or used without our prior written agreement for any purpose other than those indicated.
Third Parties: Any disclosure of this document to a third party is subject to this disclaimer. The report was prepared by Bowland Tree Consultancy Ltd at the instruction of and for use by our client, as named. This report does not in any way constitute advice to any third party who is able to access it by any means. Bowland Tree Consultancy Ltd excludes to the fullest extent lawfully permitted all liability whatsoever for any loss or damage arising from reliance on the contents of this report.
PRELIMINARY ARBORICULTURAL IMPACT ASSESSMENT LAND OFF WHALLEY ROAD, BARROW
CONTENTS Page
1.0 INTRODUCTION ........................................................................................................................1Terms of Reference ..................................................................................................................1Scope and Purpose of Report ................................................................................................. 1Site Visit, Data Collection and Tree Impact Plan.................................................................... 1
2.0 STATUTORY PROTECTION IN RESPECT OF TREES AND ASSOCIATED WILDLIFE .........2Tree Preservation Orders and Conservation Area Designations ......................................... 2Protected Species .....................................................................................................................2Felling Licences ........................................................................................................................2
3.0 THE SITE AND THE SURROUNDINGS .................................................................................... 24.0 THE TREE POPULATION .......................................................................................................... 35.0 THE DEVELOPMENT PROPOSAL AND ITS PROJECTED ARBORICULTURAL IMPACTS . 5
Mitigation for Projected Tree Losses as Part of Site Landscaping ...................................... 56.0 RECOMMENDATIONS FOR SUCCESSFUL TREE RETENTION IN THE CONTEXT OF
DEVELOPMENT .........................................................................................................................6Root Protection Areas and Construction Exclusion Zones .................................................. 6Underground Utilities ...............................................................................................................6Arboricultural Method Statement (AMS) and Tree Protection Plan (TPP) ........................... 6
7.0 OTHER RECOMMENDATIONS ................................................................................................. 6Non-Development Related Tree Works and Recommendations .......................................... 6Tree Work Related Consents ................................................................................................... 7Arboricultural Contractors .......................................................................................................7Contractors and Subsequently Identified Tree Defects ........................................................ 7New Tree Planting .....................................................................................................................7Retained Tree Management ..................................................................................................... 7
8.0 SUMMARY AND CONCLUSIONS ............................................................................................. 7REFERENCES ..................................................................................................................................8
APPENDICES APPENDIX ONE: .................................... TREE SURVEY SCHEDULE & BS5837:2005 - TABLE 1 APPENDIX TWO: ................................... TEMPORARY PROTECTIVE FENCING SPECIFICATION
PLANPLAN ONE: ......................................................................................... TREE CONSTRAINTS PLAN PLAN TWO: ..................................................................................... ILLUSTRATIVE MASTERPLAN
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1.0 INTRODUCTION
Terms of Reference
1.1 Bowland Tree Consultancy Ltd is commissioned by the Barrow Lands Company Ltd to: a) Survey, from ground level, all trees having reasonable potential to be adversely affected
by or to affect the proposed site development; b) Prepare a tabulated Tree Survey Schedule based on guidance specified in British
Standard BS5837:2005 - Trees in Relation to Construction – Recommendations; c) Broadly evaluate the tree related impacts and potential design conflicts of the proposal; d) Advise on removal, retention and management options for the trees in the current
context and in the context of the proposed development; e) Assess the tree protection measures required during the proposed development; f) Annotate the site proposal plan to identify tree numbers, retention categories, crown
spreads and Root Protection Areas to indicate tree related constraints in order to produce a Tree Constraints Plan; and
g) Produce an Arboricultural Impact Assessment (AIA) report outlining the main tree related issues and potential tree related impacts in relation to the development proposal and suitable mitigation and/or protection measures.
Scope and Purpose of Report
1.2 By detailing foreseeable tree related issues this report is intended to assist the Local Planning Authority (LPA) in their review of the proposed development and, as such, should be supplied to them in support of the planning application to which it pertains. Essentially, the report provides a preliminary analysis of the impacts that the proposed development would potentially have on trees and offers guidance on suitable tree management, mitigation for losses and appropriate tree protection measures in the context of the proposed development. It should be noted that, although the report is dated June 2012, the surveys relating to the appraisal were carried out during 2010 and 2011, prior to the updated version of the British Standard (BS5837:2012) coming into effect and, as such, is therefore based on the preceding 2005 guidance (BS5837:2005).
Site Visit, Data Collection and Tree Impact Plan
1.3 Further to this instruction I confirm that I initially visited the site during March and April 2010 and carried out an appraisal of trees, as detailed above and in accordance with the preceding disclaimer. A site visit was then made during December 2011 in order to review the initial survey, and the data was subsequently updated accordingly where changes in tree condition had occurred in the interim. All tree data collected on site is set out in the attached tabulated Tree Survey Schedule (TSS) at Appendix One which, for ease of interpretation, should be read alongside the associated BS5837:2005 Table 1.
1.4 During my survey I identified 89 individual trees (prefixed ‘T’), four groups of trees (prefixed ‘G’) and three woodland areas (prefixed ‘W’), and have numbered them accordingly on the appended Tree Constraints Plan (TCP). The TCP is based on a topographical survey plan that was provided in electronic format by the client and, for the purpose of this report, the plan details are presumed to be accurate. The TCP details the existing site with the readily definable tree constraints which, when compared against the Illustrative Masterplan (at Plan Two), allows a preliminary appraisal of the development’s potential impacts on trees (see section 5) and a subsequent evaluation of tree protection requirements, tree work needs and provisions for mitigation. The constraints relating to tree Root Protection Areas (RPAs) and their protection requirements are discussed in detail at paragraphs 6.1 and 6.2.
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2.0 STATUTORY PROTECTION IN RESPECT OF TREES AND ASSOCIATED WILDLIFE
Tree Preservation Orders and Conservation Area Designations
2.1 The Town & Country Planning Act (1990) (the Act) and associated Regulations empower Local Planning Authorities (LPAs) to protect trees in the interests of amenity by making Tree Preservation Orders (TPOs). The Act also affords protection for trees of over 75mm diameter that stand within the curtilage of a Conservation Area (CA). Subject to certain exemptions, an application must be made to the LPA in question to carry out works upon or to remove trees that are subject to a TPO, whilst six weeks’ notice of intention must be given to carry out works upon or to remove trees within a CA that are not protected by a TPO. However, in situations where full planning permission has been granted and protected trees directly affect the implementation of the approved development, then it is permissible to carry out any works necessary to the subject trees in order to implement the development.
2.2 The site does not stand within a CA, and I am not aware of a TPO covering the trees at the site. As such, it is essential to contact the Planning Department of Ribble Valley BC in order to confirm if any statutory protection exists prior to scheduling or carrying out any tree works.
Protected Species
2.3 Nesting birds are afforded statutory protection under the Wildlife & Countryside Act (1981) (as amended) and their potential presence should therefore be considered when clipping hedges, removing climbing plants and pruning and removing trees. Hedges provide valuable nesting sites for many birds and clipping should therefore be avoided during March to July. Trees, hedges and ivy should be inspected for nests prior to pruning or removal and any work likely to destroy or disturb active nests should be avoided until the young have fledged.
2.4 All bat species are protected under Schedule 5 of the Wildlife & Countryside Act (1981) (as amended) and under Schedule 2 of the Conservation of Habitats and Species Regulations 2010. In this respect it should be noted that it is possible that unidentified bat habitat features may be located high up in tree crowns and all personnel subsequently carrying out tree works at the site should therefore be vigilant and mindful of the possibility that roosting bats may be present in trees with such features. If any bat roosts are identified then it is essential that works are halted immediately and that a suitably qualified and experienced ecologist investigates and advises on appropriate action(s) prior to works continuing.
Felling Licences
2.5 Subject to certain exemptions the Forestry Act (1967) requires that a ‘Felling Licence’ be obtained to fell growing trees amounting to specific volumes of timber. Felling Licences are administered by the Forestry Commission and contravention of the associated controls can incur substantial penalties. A Felling Licence is not needed for the removal of trees immediately required for the purpose of carrying out a development authorised by detailed (i.e. full) planning permission granted under the Act (1990). However, I would note that this does not apply to outline planning permission, as sought in this instance.
3.0 THE SITE AND THE SURROUNDINGS
3.1 The site is located within a rural edge area to the south-west of the village of Barrow, Lancashire, approximately 4 kilometres due south of the centre of Clitheroe, the Council’s administrative town. It consists of various fields that are under agricultural usage and divided by ditches, hedgerows and fences, with individual trees and groups of trees throughout and a woodland belt to the north and a woodland belt to the south-east (see Fig.
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1, below). Topography throughout the most of the site is evidently relatively level, although there is a small earth bund of several metres in height within its north-eastern section.
3.2 The site is bordered to the north-east by moderate density residential properties with gardens, to the north by a stream, allotments and open agricultural fields, to the east by Whalley Road with residential and commercial development beyond, to the south by open agricultural fields, and to the west by open agricultural fields and a railway line. A biological heritage site stands immediately adjacent to the south-western corner of the site. Vehicular access is available via three gated farm tracks off Whalley Road, with one in the north-eastern corner of the site, one to the centre and one in the south-eastern corner. A public footpath runs from Whalley Road in the centre of the site in an east/west direction, until close to the western boundary where it turns to run north-east/south-west, exiting the site in the south-western corner. A further public footpath runs along the southern boundary.
Fig 1: The northern section of the site, looking north with woodland belt W3 in view
3.3 A detailed landscape character appraisal of the locality was not carried out as part of this assessment, although I did make a general appraisal of the visual amenity that the trees within the site confer on the locality based on their visual prominence and overall contribution to the landscape, as discussed in paragraph 4.3.
4.0 THE TREE POPULATION
4.1 As noted previously, 89 individual trees, four groups of trees and three woodland areas were surveyed for the purpose of this appraisal, of which the majority are located within the site boundaries. The surveyed individual trees consist of several deciduous broadleaf and evergreen coniferous species, being common oak, ash, common alder, Scot’s pine and goat willow, with oak and ash forming the majority of the numbers. Only a very small percentage of the surveyed trees are of non-native species.
4.2 Tree sizes range from small to very large, with most individuals being moderate to large, and ages from young to post-mature, with the majority being in the early-mature to mature age range. Several trees may be considered to have attained veteran age due to their dimensions and apparent life stages, although I would note that I did not carry out any individual assessments of such status. The trees stand at heights of up to 24.5 metres,
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have maximum diametrical crown spreads of up to 28.5 metres and stem diameters of up to 1.6 metres.
4.3 The trees stand as individuals and as components of wider groups and of woodland belts. Most of the individual trees within the site boundaries, as well as the groups and woodland belts, are visible from the public footpaths and/or from Whalley Road, and form distinct and important landscape features of the local area. In consideration of these factors it is evident that, as a whole, the trees on site confer a high visual amenity in the immediate and the wider local landscape (see Fig. 1, previous page, and Fig. 2, below).
Fig. 2: Oak tree T75, as seen from the south looking north
4.4 Detailed tree dimensions and other pertinent information such as structural defects and physiological deficiencies are included in the Tree Survey Schedule (TSS) at Appendix One. In respect of the TSS it should be noted that tree quality is categorised within the existing context without taking any site development proposals into account. However, recommendations for works included in the TSS take both current site usage into consideration and the proposed site development where there are definable development related issues with regard to specific trees.
4.5 The TSS includes a column (‘Cat. Grade’) listing the trees’ respective retention values, where they are rated either ‘A’, ‘B’, ‘C’ or ‘R’, as per BS5837:2005 Table 1 (Appendix One). ‘A’ category trees are those considered to be of ‘high quality and value’ and, accordingly, the most suitable for retention and ‘B’ category trees are those considered to be of ‘moderate quality and value’. ‘C’ category trees are those considered to be of ‘low quality and value’ which, as stated in BS5837:2005 Table 1, “will usually not be retained where they would pose a significant constraint on development”. In turn, ‘R’ category trees are those that are in relatively poor condition whereby they should be removed for reasons of sound arboricultural management regardless of any plans for development of the site.
4.6 As detailed in Table A (overleaf) 23 trees, three groups and three woodlands were allocated high retention values of ‘A’, 26 trees and one group were allocated moderate retention values of ‘B’ and 25 trees were allocated low retention values of ‘C’. In addition, 15 trees were allocated ‘R’ categorisations due to short projected remaining safe life expectancies for various reasons including poor physiological and/or structural condition, and are therefore recommended for removal regardless of the proposal.
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Table A: BS5837-2005 Retention Categories of the Surveyed Trees Ret.
Cats. Tree/Group/
Woodland Numbers Totals
Trees, groups & woodlands of a moderate or high quality &
value that should be afforded appropriate consideration in the
context of development
'A’ T2, T8, T11, T13, T14, T16, T17, T20,
T26, T28, T29, T32, T36, T40, T42, T50, T70, T71, T73, T75, T77, T81,
T83, G1, G2, G3, W1, W2, W3
23 Trees (25.9%) 3 Groups (75%)
3 Woodlands (100%)
‘B’T4, T7, T10, T18, T19, T24, T33, T35,
T38, T42, T43, T44, T45, T48, T54, T55, T62, T64, T65, T66, T74, T79,
T80, T85, T86, T89, G1
26 Trees (29.2%) 1 Group (25%)
Trees, groups & woodlands of a low quality & value that should
not be considered a material constraint to development
‘C’T3, T5, T9, T12, T15, T21, T22, T25, T30, T31, T34, T37, T39, T46, T51, T52, T53, T56, T60, T67, T72, T76,
T78, T82, T84
25 Trees (28.1%)
Trees, groups & woodlands that should be removed for sound
management reasons regardless of site plans
‘R’ T1, T6, T23, T27, T47, T49, T57, T58, T59, T61, T63, T68, T69, T87, T88 15 Trees (16.8%)
= 89 Trees, 4 Groups & 3
Woodlands in Total
5.0 THE DEVELOPMENT PROPOSAL AND ITS PROJECTED ARBORICULTURAL IMPACTS
5.1 The application is for outline planning permission for a residential development with all matters other than the access reserved. Accordingly, I have been provided with an Illustrative Masterplan (at Plan Two) to that effect, as prepared by Levitt Bernstein Architects and appended at Plan 2. Vehicular access is proposed from three points off Whalley Road to the east, as detailed on the Illustrative Masterplan.
5.2 As the Masterplan is illustrative in nature I have not made a detailed appraisal of the development’s potential impacts on individual trees. However, it is evident that the proposal includes provision and the ability to retain the majority of the large trees on site and incorporate them into areas of public open space or suitably sizeable gardens. It is therefore important that, if outline permission is granted, then the subsequent detailed development proposals should include adequate provision for the incorporation of the ‘A’ and ‘B’ category trees into the design, along with sufficient detail regarding the specifics of how these trees are to be retained successfully (e.g. through the protection of their Root Protection Areas, as discussed in section 6). This could be covered and controlled via a suitably worded planning condition on the outline planning permission.
Mitigation for Projected Tree Losses as Part of Site Landscaping
5.3 Extensive new tree planting should be included as part of any subsequent detailed development proposals and the associated landscape scheme, to be submitted and approved at ‘reserved matters’ stage. In consideration of the character of the surroundinglocal rural landscape it is my opinion that such a scheme should include a substantial percentage of trees of locally native species such as holly, whitebeam, ash, common oak and silver birch. The provision of locally native trees would have numerous benefits including maintaining local landscape character, heritage and conservation value and providing important habitat to a wider range of plants and animals than non-native species. Specific tree planting requirements can be conditioned as part of any planning permission. New tree planting is discussed further in paragraph 7.5.
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6.0 RECOMMENDATIONS FOR SUCCESSFUL TREE RETENTION IN THE CONTEXT OF DEVELOPMENT
Root Protection Areas and Construction Exclusion Zones
6.1 Adequate protection of the Root Protection Areas (RPAs) of retained trees during construction is essential if their long-term viability is to be assured. RPAs, which are calculated through a method provided in BS5837:2005, are ground areas that should be protected by temporary protective fencing as Construction Exclusion Zones (CEZs) throughout the development process, thereby keeping the trees’ root zones free from disturbance. Consequently, the RPA distances, as detailed in the TSS (see 6.2, below), give an idea of the on-site below-ground constraints in respect of tree roots and assist in planning for appropriate tree retention in relation to feasible development. In certain situations, there is a limited degree of flexibility in the RPA and CEZ positioning.
6.2 The TSS includes two columns listing the RPAs of the individually surveyed trees and, where applicable, the largest of the trees in any surveyed groups as overall areas in square metres and as radial distances. The radial RPAs are indicated as magenta coloured circles on the TCP. With regard to CEZs the design, materials and construction of the fencing should be appropriate for the intensity and type of site construction works, should conform to at least section 9 of BS5837:2005 and should be agreed with the LPA, which can be secured by the imposition of a suitably worded planning condition on the outline permission. A temporary protective fencing specification is included at Appendix Two and the extents of the RPAs should dictate locations of the CEZs.
Underground Utilities
6.3 The installation of underground utilities in close proximity to trees can cause serious damage to their roots. As such, utilities should be routed outside RPAs unless there is no other available option. Where RPAs cannot be avoided then guidelines set out in the National Joint Utilities Group publication ‘Volume 4: NJUG Guidelines for the Planning, Installation and Maintenance of Utility Apparatus in Proximity to Trees (Issue 2) – Operatives Handbook’ should be followed (e.g. trenches of a very limited width to be hand dug or the use of directional drilling).
Arboricultural Method Statement (AMS) and Tree Protection Plan (TPP)
6.4 BS5837:2005 recommends that, where considered expedient, an AMS and a TPP be prepared detailing “special mitigation construction”. Essentially, the AMS and TPP describe the procedures, working methods and protective measures to be used in relation to retained trees in order to ensure that they are adequately protected during the construction process. Production of and adherence to an AMS and TPP can be conditioned as part of a planning approval if considered necessary.
7.0 OTHER RECOMMENDATIONS
Non-Development Related Tree Works and Recommendations
7.1 Any general management pruning works for retained trees that are stated to be non-development related, as detailed in the TSS, are recommended in accordance with prudent arboricultural management and should therefore be carried out regardless of any site development proposals and potential changes in land usage. All tree works should be carried out in accordance with BS3998:2010 - Tree Work – Recommendations.
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Tree Work Related Consents
7.2 No tree pruning or removal works should commence on site until necessary consents have been obtained from the LPA as part of a planning approval or in respect of any statutory tree protection or controls that may exist.
Arboricultural Contractors
7.3 All tree works should be carried out by suitably qualified and experienced arboricultural contractors carrying appropriate public liability insurance cover and be implemented to the minimum current CE and UK industry standards and in accordance with industry codes of practice. Only certificated personnel should, in accordance with The Control of Pesticides Regulations, apply any pesticides.
Contractors and Subsequently Identified Tree Defects
7.4 Contractors should be made aware that, should any significant tree defects become apparent during operations that would not have been immediately obvious to the surveyor, then such defects should be notified immediately to the client and subsequently confirmed to the consultant within five working days.
New Tree Planting
7.5 All tree planting at the site should be carried out in accordance with BS4428:1989 - Code of Practice for General Landscape Operations, BS3936-1:1992, Nursery Stock – Part 1: Specification for Trees and Shrubs and BS4043:1989, Transplanting Root-Balled Trees where applicable.
Retained Tree Management
7.6 Any tree risk management appraisal and subsequent recommendations made in this report were based on observations and site circumstances at the time of my survey. Trees are dynamic living organisms whose structure is constantly changing and even those evidently in good condition can succumb to damage and/or stress. In this respect I would note that, under the Occupiers’ Liability Act (1957 & 1984), site occupants have a duty of care to take reasonable steps to prevent or minimise the risk of personal injury and/or damage to property from any tree located within the curtilage of the land they occupy. It is accepted that these steps should normally include commissioning a qualified and experienced arboriculturist to survey their trees in order to identify any risk of harm to persons or damage to property that they may present and, where unacceptable risks are identified, taking suitable remedial action to negate those risks.
8.0 SUMMARY AND CONCLUSIONS
8.1 The site in question, at Whalley Road, Barrow, currently consists of several fields with trees and other landscape features and is located in a mixed usage rural edge area in the village of Barrow. 89 individual trees, four groups of trees and three woodlands were surveyed in respect of an outline proposal for a residential development at the site.
8.2 23 trees, three groups and three woodlands were allocated high retention values, 26 trees and one group were allocated moderate retention values, and 25 trees were allocated low retention values. In addition, 15 trees were classed ‘R’ and would normally therefore be recommended for removal in the short term regardless of the proposal.
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8.3 The trees, of which a substantial number are large in size, stand as individuals and as components of groups and woodlands and, as a whole, confer a high visual amenity on the immediate and the wider local landscape.
8.4 An evaluation of the Illustrative Masterplan has indicated that proposed development of the site can be satisfactorily achieved whilst retaining the majority of the large trees on site by incorporating them into areas of public open space or suitably sizeable gardens. It is therefore imperative that any subsequent detailed development proposals include adequate provision for the incorporation of the high and moderate quality trees into the design and that sufficient detail regarding the specifics of how these trees are to be retained and protected successfully is included in support of any such associated reserved matters or further application.
REFERENCES
BS4428:1989 - Code of Practice for General Landscape Operations. BSI British Standards, BS3936-1:1992, Nursery Stock – Part 1: Specification for Trees and Shrubs. BSI British Standards, London. BS3998:2010 - Tree Work - Recommendations. BSI British Standards, London. BS4043:1989 - Transplanting Root-Balled Trees. BSI British Standards, London. BS5837:2005 - Trees in Relation to Construction – Recommendations. BSI, London. National House Building Council (2008). NHBC Standards Chapter 4.2 - Building Near Trees. NHBC, Amersham. National Joint Utilities Group (2007). Volume 4: NJUG Guidelines For The Planning, Installation And Maintenance Of Utility Apparatus In Proximity To Trees (Issue 2) – Operatives Handbook.
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BS58
37:2
005 T
able
1 – C
asca
de C
hart
for T
ree Q
ualit
y Ass
essm
ent
Tree
s for
rem
oval
Cate
gory
and
defin
ition
Cr
iteria
Id
entif
icatio
n on
plan
Ca
tego
ry R
Th
ose i
n suc
h a co
nditio
n tha
t any
ex
isting
value
wou
ld be
lost
withi
n 10
year
s and
whic
h sho
uld, in
the
curre
nt co
ntext,
be re
move
d for
re
ason
s of s
ound
arbo
ricult
ural
mana
geme
nt
�Tr
ees t
hat h
ave s
eriou
s, irr
emed
iable,
stru
ctura
l defe
ct, su
ch th
at the
ir ear
ly los
s is e
xpec
ted du
e to c
ollap
se,
includ
ing th
ose t
hat w
ill be
come
unvia
ble af
ter re
mova
l of o
ther R
categ
ory t
rees
such
as w
here
, for w
hatev
er
reas
on, th
e los
s of c
ompa
nion s
helte
r can
not b
e mitig
ated b
y pru
ning
�Tr
ees t
hat a
re de
ad or
are s
howi
ng si
gns o
f sign
ifican
t, imm
ediat
e, an
d irre
versi
ble ov
erall
decli
ne
�Tr
ees i
nfecte
d with
patho
gens
of si
gnific
ance
to th
e hea
lth an
d/or s
afety
of oth
er tr
ees n
earb
y, for
exam
ple D
utch
Elm
Dise
ase,
or ve
ry low
quali
ty tre
es su
ppre
ssing
adjac
ent tr
ees o
f bett
er qu
ality
Note
– Hab
itat r
einsta
temen
t may
be ap
prop
riate.
For
exam
ple R
categ
ory t
ree u
sed a
s a ba
t roo
st: in
stalla
tion o
f bat
box i
n nea
rby t
ree.
Dark
Red
Tree
s to
be co
nsid
ered
for r
eten
tion
Cate
gory
and
defin
ition
Ca
tego
ry –
Subc
ateg
ories
Id
entif
icatio
n on
plan
1.
Main
ly ar
boric
ultu
ral v
alues
2.
Main
ly lan
dsca
pe va
lues
3.
Main
ly cu
ltura
l valu
es,
inclu
ding
cons
erva
tion
Cate
gory
A
Thos
e of h
igh qu
ality
and v
alue:
in su
ch a
cond
ition a
s to b
e able
to
make
a su
bstan
tial c
ontrib
ution
. A
minim
um of
40 ye
ars i
s sug
geste
d.
Tree
s tha
t are
partic
ularly
good
ex
ample
s of th
eir sp
ecies
, esp
ecial
ly if
rare
or un
usua
l, or e
ssen
tial
comp
onen
ts of
grou
ps, o
r of fo
rmal
or
semi
-form
al Ar
boric
ultur
al fea
tures
for
exam
ple th
e dom
inant
and/o
r prin
cipal
trees
with
in an
aven
ue
Tree
s, gr
oups
or w
oodla
nds w
hich
prov
ide a
defin
ite sc
reen
ing or
softe
ning
effec
t to th
e loc
ality
in re
lation
to vi
ews
into o
r out
of the
site,
or th
ose o
f pa
rticula
r visu
al im
porta
nce f
or ex
ample
av
enue
s or o
ther a
rbor
icultu
ral fe
ature
s as
sess
ed as
grou
ps
Tree
s, gr
oups
or w
oodla
nds o
r sig
nifica
nt co
nser
vatio
n, his
torica
l, com
memo
rativ
e or
other
value
for e
xamp
le ve
teran
tree
s or
wood
-pas
ture
Light
Gree
n
Cate
gory
B
Thos
e of m
oder
ate qu
ality
and
value
: thos
e in s
uch a
cond
ition a
s to
make
a sig
nifica
nt co
ntribu
tion.
A mi
nimum
of 20
year
s is s
ugge
sted.
Tree
s tha
t migh
t be i
nclud
ed in
the
high c
atego
ry, bu
t are
down
grad
ed
beca
use o
f impa
ired c
ondit
ion.
Exam
ples i
nclud
e the
pres
ence
of
reme
diable
defec
ts inc
luding
un
symp
atheti
c pas
t man
agem
ent a
nd
mino
r sto
rm da
mage
Tree
s pre
sent
in nu
mber
s, us
ually
as
grou
ps or
woo
dland
s, so
they
form
dis
tinct
lands
cape
featu
res w
hich a
ttrac
t a h
igher
colle
ctive
ratin
g tha
n the
y migh
t as
indiv
iduals
. But
which
are n
ot,
indivi
duall
y, es
senti
al co
mpon
ents
of for
mal o
r sem
i-form
al ar
boric
ultur
al fea
tures
. For
exam
ple, tr
ees o
f mod
erate
qu
ality
withi
n an a
venu
e tha
t inclu
des
bette
r, A
categ
ory s
pecim
ens.
Or tr
ees
which
are i
ntern
al to
the si
te, th
erefo
re
indivi
duall
y hav
ing lit
tle vi
sual
impa
ct on
the
wide
r loca
lity
Tree
s with
clea
rly id
entifi
able
cons
erva
tion o
r othe
r cult
ural
bene
fits
Mid B
lue
Cate
gory
C
Thos
e tre
es of
low
quali
ty an
d valu
e: cu
rrentl
y in a
dequ
ate co
nditio
n to
rema
in un
til ne
w pla
nting
could
be
estab
lishe
d - a
mini
mum
of 10
ye
ars i
s sug
geste
d - or
youn
g tre
es
with
a stem
diam
eter b
elow
150 m
m
Tree
s not
quali
fying
in hi
gher
ca
tegor
ies
Tree
s pre
sent
in gr
oups
or w
oodla
nds,
but w
ithou
t this
confe
rring
on th
em
signif
icantl
y gre
ater la
ndsc
ape v
alue,
and/o
r tre
es of
fering
low
or on
ly tem
pora
ry sc
reen
ing be
nefit
Tree
s with
very
limite
d co
nser
vatio
n or o
ther c
ultur
al be
nefits
Grey
Note
– Whil
st C
categ
ory t
rees
will
usua
lly no
t be r
etaine
d whe
re th
ey w
ould
impo
se a
signif
icant
cons
traint
on
deve
lopme
nt, yo
ung t
rees
with
a ste
m dia
meter
of le
ss th
an 15
0mm
shou
ld be
cons
idere
d for
reloc
ation
APPENDIX TWO:
TEMPORARY PROTECTIVE FENCING & GROUND PROTECTION SPECIFICATION
Construcdetailed b1. be pr
Fenciapplic
2. be erthe du
3. preclu4. preclu
workspartie
5. precluadditi
Any incur
Tempora1. Temp
agreeplywo
2. The pbelow
3. The sno lesdiago
4. The twwith 3
5. The dangleshall
6. No fixdama
7. A 6001, ove
8. On coor deProte
Tempora1. Any n
overle2. The G
geotemater
3. Side-4. Prior
and m5. The T
only r
ction Exclbelow and trotected throing Construcable, as derected prior uration of thude any delude all cons and any oes; and ude the storves, cemenrsion into C
ary Protectporary proteement with ood boards.panels shalw.scaffold framss than 0.6
onal poles fiwo horizont3 no. clampdiagonal scae and extenbe driven nxing shall bage to tree r0mm x 300merleaf) shallompletion aelivery of pective Fenci
ary Groundnecessary Teaf).Ground Pro
extile membrial such asbutting scafto any dem
materials, thTemporaryremoved fol
- TEMPOGROUNusion Zon
to be agreedoughout theuction’ sectefined by ar
to any conhe project; livery of site
nstruction reother works
rage of all dnt and/or anEZs must b
tive Fencinective fencthe LPA, b
l butt toget
mework sha6 metres intxed to the utal rail poless to each joaffold pole sd back intoo less than
be made toroots when mm warningl be fixed to
and prior to plant and mng.
d ProtectionTemporary
otection Arbrane whichs woodchip. ffold boards
molition or che ArboriculGround Prllowing rece
ORARY PD PROTEnes (CEZsd with the Le developmtion below rea on the Tnstruction, d
e accommoelated activ
s to be carri
developmenny other delebe by prior a
g Construccing panelsbe either we
ther and be
all compriseto the grouuprights, ass shall be aoint.struts be cla
o the CEZ a0.5m into t
o any tree alocating pog sign read
o every 10.0any demolimaterials, t
nGround Pro
ea shall beh shall, in tu
s shall then constructiontural Consu
rotection sheipt of writte
Page 1 of 3
PROTECECTION), enclosed
Local Plannment proces
and detaileTree Protectdemolition o
dation and/vity, with thied out und
nt related meterious suarrangemen
ctions shall be eldmesh "H
e securely f
e of uprightund at maxis per 4 to 5 attached to t
amped to thand clampethe ground.and all possts. ing "TREE
0 metre lengition or conthe Consu
otection sha
e left undisurn, be cove
be fitted to works, site
ultant shall ihall remain en permissio
CTIVE FESPECIFI
d by Temping Authorit
ss, as specied in BS58tion Plan (Tor excavatio
/or materialshe sole excder supervis
materials andbstance. nt, following
of at leasHeras" pane
fixed to a s
poles of atmum 3.0 mbelow.the uprights
he top rail od to a 0.7 m
ssible preca
PROTECTgth of protecstruction wlting Arbor
all conform
sturbed andered by a c
cover the Ge preparatioinspect the in place unon from the
ENCING &ICATIONporary Proty (LPA), shfied in the 37:2005 Fi
TPP); on works an
s and/or plaception of ssion that ha
d substance
g consultatio
st 2.1 metrels or 18mm
scaffold fram
t least 3.0 mmetre centre
s at heights
of the scaffometre lengt
autions sha
ION AREA ctive fencinorks, site pist shall in
to Figure 3
d covered compressibl
Ground Proon, excavatiTemporary
ntil complet LPA.
&N - otective Fehall: ‘Temporaryg. 2 (overle
nd remain
ant machinespecified arave been ag
es including
on with the
res in heigm thick ext
mework, as
metres in lees with hor
s of 0.6 and
old framewoth of scaffo
all be taken
KEEP OUTg.
preparation, nspect the
3 of BS5837
by a semie layer con
otection Areion or deliv
y Ground Prtion of the
encing, as
y Protectiveeaf) and, if
in place for
ery; rboriculturalgreed by all
g fuels, oils,
LPA.
ght and, interior grade
s per 3 to 5
ngth drivenrizontal and
1.8 metres
ork at a 45ºld tube that
to prevent
T" (see Fig.
excavationTemporary
7:2005 (see
-permeablensisting of a
a. ery of plantrotection.project and
s
ef
r
ll
,
ne
5
nd
s
ºt
t
.
ny
e
ea
t
d
F
12
345678
F
Fig. 1: CEZ W
1. Scaffold p2. Uprights d
appropriat3. Wooden p4. Weldmesh5. Scaffold c6. Wire twiste7. Ground le8. Scaffold p
Fig. 2: BS583
– CO
THE TPL
PRESE
THE FOLL� THE P� NO P
ZONE� NO M
EXCL� NO M� NO S� NO E� NO F
ANY INCWRITT
Warning Sign
poles. driven into grote. panels securedh "Heras" type
clamps. ed and securevel.
poles driven ap
37:2005 Temp
ONSTR
(TOWTREES EN
LANNING CERVATION
LE
LOWING MPROTECTI
PERSON SHE
MACHINE, PLUSION ZOMATERIALSSPOIL SHALEXCAVATIO
IRES SHAL
CURSION ITEN PERM
und at a maxi
d with wire tiese clamped to u
ed to inside fa
pproximately 0
orary Protectiv
RUCTIOKE
WN & COUNCLOSED B
CONDITIONORDER’, T
EAD TO CR
MUST BE OVE FENCIN
HALL ENTE
PLANT OR ONES SHALL BLL BE DEP
ON SHALL LL BE LIT I
INTO THE MISSION OF
Page 2 of 3
mum 3.0m sp
s or scaffold cuprights and h
ace of fencing.
0.6m into the g
ve Fencing –
ON EXCEEP OUNTRY PLANBY THIS FENS AND/ORTHE CONTRRIMINAL PR
OBSERVEDNG MUST NER THE CO
VEHICLES
BE STOREDPOSITED INOCCUR ININ THE EXC
EXCLUSIOF THE LOC
pacing with cro
clamps where orizontals.
ground.
Recommende
CLUSIOUT!NNING ACTENCE ARE R SUBJECTRAVENTIOROSECUTI
BY ALL PNOT BE MOONSTRUCT
S SHALL E
D IN THE EXN THE EXCN THE EXCLCLUSION Z
ON ZONE MCAL PLANN
oss members a
necessary.
ed Constructio
ON ZON
T 1990) PROTECTE
TS OF A ‘TRON OF WHIC
ON
ERSONNEOVEDTION EXCL
NTER THE
XCLUSIONLUSION ZOLUSION ZOZONE
MUST BE WNING AUTH
and brace as
on
NE –
ED BY REECH MAY
L:
LUSION
E
N ZONE ONE ONE
WITH THE HORITY
Fig. 3: BS55837:2005 Temporary Grou
Page 3 of 3
und Protectionn – Recommennded Construcction
DAVID LOCK ASSOCIATES LIMITED50 NORTH THIRTEENTH STREET, CENTRAL MILTON KEYNES, MK9 3BPTEL: 01908 666276 FAX: 01908 605747 EMAIL: [email protected]