Tree Services and Consultants

Penn Green House, Birtle Road, Birtle, Bury, Lancashire BL9 6US Telephone 0161 272 0009 info@birtletreeservices.co.uk www. birtletreeservices.co.uk

Arboriculture Report

For proposed works at Hollin Lane, Crawshaw Booth, Rossendale

Produced by

Hilary Birtwistle, FdSc Arb., MArborA., MBA, MCMI

of

Birtle Tree Services Ltd

on behalf of

MSM Construction Ltd

November 2014

Contents

1 Introduction 1

1.1 Instruction and References 1

1.2 Scope and Limitations of the Report 1

2 Tree Survey 2

2.1 Conditions 2

2.2 Topography and Surfaces 2

2.3 Amenity 2

2.4 Tree Survey Data 2

3 Statutory Considerations 4

3.1 Standard of Work 4

3.2 Statutory Controls 4

3.3 Wildlife 4

4 Arboricultural Implications Assessment 4

4.1 Scope and Limitations of Arboricultural Implications Assessment 4

4.2 Assessment Data 4

4.3 Impact Assessment 5

5 Tree Constraints Plan 5

5.1 Protective Fencing 6

5.2 Constraints within the Root Protection Area 6

6 Method Statement 7

6.1 Introduction 7

6.4 Specification for Protection to Existing Trees 8

6.5 Additional Precautions Outside Fenced Areas 8

6.6 Tree Works 9

6.7 Specification for Protection of Trees During Trenching Works 9

6.8 Specification for Construction of Hard Surfaces Within the RPA 10

6.9 Order of Works 10

6.10 Proposed Order of Works Table 10

Appendix 1 Location of property – Google Map

Appendix 2 Image

Appendix 3 Tree Survey Data Explanatory Notes

Appendix 4 Tree Protection Plan

Appendix 5 Scaffolding within RPA

Appendix 6 Specification for Protective Fencing

Appendix 7 Geoweb Supplier information

Terms and Conditions

1

1 Introduction

1.1 Instruction and references

The development site is a green field site that is the continuation of a larger development site upon

which residential properties have been built. The intention of the client is to submit the next phase

of the planning application to continue the development. Within the area under consideration one

tree, T3 (Elm), is within influencing distance of the proposed development. T3 is located to the

south of the site on the boundary with existing dwellings.

Birtle Tree Services Ltd have been instructed by the client MSM Construction Ltd, to undertake the a

survey and an arboricultural report in relation to the trees including an impact assessment,

constraints plan, recommendations of how to mitigate any adverse impact and an Arboricultural

Method Statement;

1.2 Scope and limitations of the report

T3 formed part of a larger survey and report that was undertaken in December 2011. Approval was

given to undertake management works to the tree which was undertaken in April 2012. This report

revisits and updates the information gathered in December 2011 in relation to T3.

The purpose of the report, with reference to BS 5837:2012 Trees in relation to construction –

Recommendations is to identify the impact of the development on the tree and provide guidance to

minimise any adverse impact.

The report is based upon a visual inspection from ground level and no climbing has been undertaken

to gather evidence. The consultant shall not be responsible for events that happen after the date of

the report due to factors that were not apparent at the time, and the acceptance of this report

constitutes an agreement with the guidelines and the terms listed in this report.

Any defects seen by a contractor, agent or the owner that were not apparent to the consultant must

be brought to the consultant’s attention immediately.

The consultant accepts no liability in respect of the tree unless the recommendations of this report

are carried out under his/her responsibility.

Assessing the potential influence of tree upon load bearing soils, beneath existing and proposed

structures resulting from water abstraction by trees or rehydration of shrinkable soils has not been

included in the survey and is therefore not considered in the report. The consultant cannot be held

responsible for damage arising from such action.

Adverse weather conditions can significantly alter circumstances that increase a tree’s potential to

cause harm.

The Tree Protection Plan which is shown in Appendix 4 is provided for illustrative purposes only, it is

an estimation and is not intended to replace development plans. Scaling and measurements, whilst

being a close approximation, should not be relied upon for construction purposes.

2

The limitations of this report are restricted to the persons, time, information made available and

purpose for which this report has been prepared.

2 Tree Survey

2.1 Conditions

Hilary Birtwistle carried out the survey and assessment of T3 on 9th December 2011 and after tree

works had been undertaken in April 2012.

The survey is limited to the area shown in Appendix 1.

2.2 Topography and surfaces

The area is a green field site that constitutes a part of a much larger residential development. The

ground levels rise gradually from west to east. The ground around T3 is extremely boggy and

marshy with a run off stream running from the hills to the east between T3 and the houses to the

south of the tree.

2.3 Amenity

T3 is subject to a Tree Preservation Order. The Visual Amenity of the trees is medium. T3 is a

maiden tree within a field at present and as such it is visible from road users along Hollin Way

(North) and residents along the southern edge of the field.

2.4 Tree Survey Data

The following table should be read in conjunction with Appendix 3 (Tree Survey Data Explanatory

Notes) in order to correctly interpret the tree data.

3

Ref

Age and Species

Height (m)

DBH

Approximate Crown

Spread (m)

Notes

Recommendations

Vigor Amenity Value

Physiological Condition

Life Expectancy

(yrs)

Crown Clearance (m)

N

E

S

W

Priority Inspect Freq (yrs)

Structural Condition

Retention Category

T3 Early Mature Elm

(Ulmus)

12.5 71 5.5 5.5 5 4 The tree is located on the southern edge of the development site. The land to the south of the tree is very boggy and will be creating an anaerobic environment for the roots. The tree is protected by TPO No T2/62/T5

No work is required Moderate Good Good

Moderate >40 B1

N

E

S

W

NA

3 years

7 5 5 4

Table 1 Tree Survey Data

4

3 Statutory Considerations

3.1 Standard of Work

All tree work undertaken should be done in accordance with British Standard 3998: 2010 and by

competent arboriculture contractors with public liability insurance cover of at least two million

pounds.

3.2 Statutory Controls

As the trees surveyed are subject to Tree Preservation Orders statutory permission from the Local

Planning Authority (LPA) will be required before any tree works take place on T3.

3.3 Wildlife

All operations should take account of wildlife needs and be planned to take advantage of weather

conditions and time of year for minimum damage and disturbance. If any protected species of

nesting birds are present or discovered while the works are taking place all work should cease until

contact has been made with English Nature for further advice. English Nature can be contacted on

01942 820342 or by e-mail to: northwest@english-nature.org.uk Specific consideration should be

given to the possible presence of roosting bats, which are protected by the Wildlife and Countryside

Act 1981 (schedule 5) and included in schedule 2 of the Conservation Regulations 1994. Ideally, a

survey should be carried out to identify any potential roost sites and if bats are found to be present

advice should be sought from a person qualified and experienced in handling such matters and fully

conversant with the implications of the Act. At the time of survey there was no evidence of nesting

birds. However the best time to undertake any works would be during autumn, winter or before the

nesting season begins in the spring.

4 Arboricultural Implications Assessment

4.1 Scope and Limitations of Arboricultural Implications Assessment

The purpose of this Assessment is to:

Assess the implications, if any, that the proposed development will have on T3;

Advise on arboricultural measures which would be necessary to protect the tree including its root.

The limitations of this report are restricted to the persons, time and information made available and

purposes for which the report has been prepared.

4.2 Assessment Data

The Tree Protection Plan (Appendix 4) shows the tree in relation to the proposed development.

In order to fully assess the impact of the proposals an Implications Table has been created below.

The Implications Table details the Root Protection Area (RPA) in accordance with the British Standard

5837:2012 Trees in relation to construction – Recommendations. This is an area that should be left

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undisturbed in order to provide adequate rooting area for the trees. The Root Protection Area is

illustrated on the Tree Protection Plan in Appendix 4.

BS5837:2012 Trees in relation to design, demolition and construction – Recommendations allows a

reduction of 20% of the root protection zone when the area around the tree is conducive to a

healthy growing environment. This has been included in the plan by applying the permitted

reduction to the circumference of the RPA.

Tree Ref

Root Protection Area Identified in Table 2 of BS 5837:2005

Implications

T3 284 m2 = circle with a radius of 7m from tree stem

No construction within RPA. Hard and soft landscaping within RPA must be undertaken by hand only. Hard landscaping to be based on recommendations in Section 7.8

Table 4 Root Protection Area Implications Table

4.3 Impact Assessment

Tree Number

Impact Conditions

T3 Proximity of proposed buildings to tree

No construction should take place within the RPA (see appendix 4) This will have an impact on property number 79 which encroaches significantly into the RPA. Also other properties may have to consider use of scaffolding within the RPA – see Appendix 5 for specification Protective fencing around the RPA will also encompass the canopy spread therefore providing safe movement of plant within the site during development. Ground within RPA to be prepared for resurface either soft of hard landscaping by hand (see Section 7.8) Resurfacing should be of permeable materials (see Section 7.8) The area surrounding the tree is currently very boggy and is a poor environment for the tree as the water will create an anaerobic soil structure. During development it is recommended that additional drainage is installed to reduce the problem. See section 7.7 for information about trench-works within RPA

Table 5 Impact Table

6

5 Tree Protection Plan The Tree Protection Plan (Appendix 4) indicates the Root Protection Area (RPAs) and the position of

the protective fencing which protects the integrity of the RPA.

5.1 Protective Fencing

It is recommended that tree protection fencing is erected around the construction area as per the

Tree Protection Plan (Appendix 4) and that protection fencing is inspected on a daily basis and any

breaches repaired immediately.

Once protective barriers have been erected and ground protection is in place, all weather signage

should be used to indicate “Construction Exclusion Zone – Keep Out”. (Appendix 8)

Once erected barriers should not be removed or altered without prior recommendation by an

arboriculturist and approval of the local planning authority.

All fencing used on the site should fully comply with BS5837:2012 Trees in relation to design,

demolition and construction – Recommendations

The fencing should be strong and suitable for local conditions. It should also take into account the

degree of construction activity on the site.

In this circumstance the location for the protective fencing should be as shown on the Tree

Protection Plan and be a Herras type temporary fencing with the basis pinned to the ground securely

(see appendix 6).

5.2 Constraints within the Root Protection Area

Prior to and throughout the building works the RPA are to remain protected and within the areas:

No materials are to be stored

Mechanical cultivation is not to take place

Soil levels must not be raised or lowered

Cement must not be mixed either in a protected area or in a place where dust or run off

could compromise a protected area

no vehicular access or parking of vehicles

When designing the site layout, account should be taken of the construction method of the access

route in relation to the retained trees. It would be advisable to mark out the optimum position of

the protective fencing on the ground prior to finalisation of any design proposals.

In the design phase the following should be taken into account:

walls or structural slabs should bridge over roots allowing sufficient clearance for secondary

thickening or be designed to distort without cracking; or

pavings and other surfaces should be laid on a flexible base to allow movement and to

facilitate relaying if distortion becomes excessive.

pavings and other surfaces should be of permeable materials in area such as parking areas,

attention is drawn to the use of a solution such as Geotex/Geogrids (Appendix 7) to provide

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a hard surface whilst maintaining a pervious surface through which water and nutrients are

able to pass and the weight of vehicles is distributed to avoid soil compaction.

6 Method Statement

6.1 Introduction

This method statement has been prepared by Birtle Tree Services Ltd on behalf of MSM Construction

Ltd.

It has been prepared to ensure that T9 which is to be retained is properly protected throughout the

development of the site and continues to represent a visual amenity in the future. It instructs all

contractors on methods to avoid damage to the trees.

The Method Statement recommends all development within influencing distant of trees is carried

out in accordance with BS5837:2012 Trees in relation to construction – Recommendations. Any

development affecting trees must be supervised by an arboricultural consultant.

6.2 Specifications for protection to existing trees

The recommendations in BS5837:2012 Trees in relation to construction – Recommendations must be

complied with at all times.

No pruning, felling or severance of roots is to take place without prior consent from the local

authority.

Any works to the existing trees are to be carried out by a fully qualified tree surgeon and in

accordance with BS3998 (2010) Recommendations for Tree Works.

The position and detail of the protective fencing must be agreed with the local authority prior to site

works commencing.

The majority of the root system of a tree is in the surface 600mm of the soil, extending radially for

distances frequently in excess of the trees height. Beyond the main structural roots (close to the

base of the trunk), the root system rapidly sub-divides into smaller diameter roots. Off this main

system a mass of fine roots develop.

The shape of the main structural roots system develops in response to the need for the tree to have

physical stability. Beyond these major roots, root growth and development is influenced by the

availability of water and nutrients. Unless conditions are uniform around the tree, which would be

unusual, the extent of the root system will be very irregular and difficult to predict. It will not

generally show the symmetry seen in the branch system.

The parts of the root system which are active in water and nutrient uptake are very fine, typically

less than 0.5 mm diameter. It is essential that conditions in the soil remain conducive to the healthy

growth and maintenance of these fine roots so that the water and nutrients necessary for healthy

tree growth can be absorbed.

8

All parts of the root system, but especially the fine roots, are vulnerable to damage. Once they are

damaged, water and nutrients update will be restricted until new roots have regenerated. Vigorous

young trees will be capable of repaid regeneration but the more mature a tree is the more slowly

they will respond if at all.

In order to live and grow, roots need oxygen from the soil. Respiration by the roots and other soil

organisms depletes this oxygen and increases carbon dioxide levels in the soil; a correct balance of

these gases is normally maintained by diffusion between the soil and the atmosphere. Anything,

which disturbs this balance will affect the condition of the root system.

The factors that most commonly affect this diffusion adversely and therefore damage the roots are

as follows:

Compaction of the ground, which reduces the space between soil particles. This is

particularly important on clay soils. A single passage by heavy equipment on clay soils or

storage of heavy materials can cause significant damage.

Changing soil levels even for a few weeks.

Covering the root area with impervious surfaces.

A rise in the level of the water table. Roots can tolerate submersion for short periods, but a

permanent rise will deplete the soil oxygen.

Serious damage is often caused during preliminary site works by stripping the topsoil. For this

reason such works should be avoided until protective fencing has been erected and within the RPA

only careful digging by hand should be undertaken.

Excavations in the rooting area can sever roots. As the majority of roots are in the surface 600mm,

even shallow excavations can cause damage.

Excavations for foundations, landscaping or service trenches are usually sufficiently deep to sever

most of the roots, and it should therefore be assumed that all parts of the root system beyond the

excavation would no longer serve the tree.

Excavation or soil stripping which sever or damage the roots may impair the stability of the tree and

make it dangerous.

If roots become exposed they need immediately to be wrapped in dry, clean hessian sacking to

prevent desiccation and to protect from rapid temperature changes. Roots smaller than 25mm

diameter may be pruned back to a side branch using a proprietary cutting tool such as bypass

secateurs or handsaws. Roots larger than 25mm should not be severed as they fall within the

restrictions imposed by the Tree Preservation Order and as such are subject to Application to

Undertake Tree Works. Prior to back filling, any hessian wrapping should be removed and retained

roots should be surrounded with sharp sand (builders’ sand should not be used because of its high

salt content which is toxic to trees).

6.3 Additional Precautions Outside Fenced Areas

Oil, bitumen, cement or other materials likely to cause damage to the tree must not be stacked or

discharged within 10m of the tree stem or within the protective area.

9

Concrete mixing and washing will not be carried out within 10m of the trees.

Fires will not be lit beneath the foliage or in a position where the flames could extent to within 5m of

the foliage, branches or trunk. If the fire is large then this may necessitate a distance of at least 20m.

Trees will not be used as anchorage for equipment.

Notice boards, telephone cables or other services will not be attached to any part of the trees.

Care should be taken when using cranes or other equipment near the canopy of the trees.

Scaffolding may only be erected within protected areas if it is done so in accordance with BS5837

(2005) and with prior consent of the local authority (see Appendix 5).

No services under existing tree canopy should be laid without prior approval and proper supervision.

All work in this respect shall be in accordance with the specifications for trenching works within this

method statement (see section 7.7)

6.4 Tree Works

No tree works are required.

6.5 Specification for protection of trees during trenching works

Where possible services should be located outside of the RPA.

Should this not be possible then the guidelines within “NJUG 10” Guidelines for the Planning,

Installation and Maintenance of Utility Services in Proximity to Trees should be adopted.

Any trenching works required to accommodate services shall be dug by hand away from the bole of

the trees.

So as to minimise the damage to the roots of the trees, any trenches that are required are excavated

as narrow as possible.

Topsoil and subsoil excavated from the trench shall be deposited into separate stacks and kept apart

until the backfilling operation commences.

No roots over 25mm in diameter are to be severed without the prior agreement from the local

authority.

Where it is necessary to sever roots below 25mm in diameter, they will be pruned back to a side

branch using a proprietary cutting tool such as bypass secateurs or handsaws to make a clean cut.

Services shall be carefully positioned in the trench without causing any damage to the tree roots.

Once the pipes or cables have been positioned, backfilling shall be carried out by hand using the

subsoil firstly. The subsoil shall be backfilled into the trench in layers of no more than 100mm deep

and each layer shall be gently consolidated by treading the surface. Once the subsoil backfilling has

reached the level of the top of the existing subsoil, topsoil backfilling shall commence. Topsoil

excavated from the trench shall similarly be backfilled into the trench in layers of no more than

10

Erection of Protective Fencing

around tree

Construction of dwellings

Construction of hard surfaces (eg

parking area) with use of permeable

surface solution such as

Geotex/Geogrid/block

paving/permeable tarmac

Remove protective fencing only on

approval from local authority

Landscaping compliant with

guidelines ie hand dig only and

minimal disruption to roots

100mm deep and each layer shall be gently consolidated by treading the surface. Topsoil shall be

backfilled into the trench until original ground level is reached. It is important that no voids are left

and that the soil completely surrounds the roots. When a trench is excavated under a driveway or

parking area, excavation and backfilling shall be undertaken as described here but the attention is

directed to Appendix 8 as the developer will need to acquire the specification for hard surfaced area

construction within root protection areas from the supplier of permeable solutions such as Geotex.

6.6 Specification for the Construction of Hard Surfaces Within the RPA

It is likely that some hard surfaces to be used for parking are to be constructed within the RPA of the

trees within the site. As per other recommendations within this report all removal of vegetation

within the RPA must be undertaken carefully and by hand. The installation of a Geoweb/Geogrid or

similar solution that is installed on a hand dig basis will enable the area to be constructed with

minimal impact on the roots. (See appendix 7)

6.7 Order of Works

11

7.10 Proposed Order of Works Table

Work to be undertaken Tick if relevant

Date Approved

Actions by

1 Protective fending erected Contractor

2 Confirm fencing is acceptable LPA Arb Officer

3 Development begins Developer

4 Fence monitored and repaired if necessary Developer/Arb Contractor

5 Meetings to confirm the site is acceptable (as necessary)

Site Manager/LPA Arb Officer

6 Excavate service trenches (where necessary) Contractor

7 Relocation of protective fence to allow scaffold to be erected or soft/hard landscaping to be undertaken(if necessary)

Developer/Arb Contractor

8 Confirm the relocated protective fences are acceptable (if necessary)

LPA Arb Officer

9 Remove protective fencing Contractor

10 Experts present where problems exist or where special protection measures are required

LPA Officer/ LPA Arb Officer

11 All special protection features supervised by Arboriculturalist

Arboriculturalist

12

Appendix 1 Hollin Way, Rossendale

Image courtesy of Google Earth for the purposes of indicating the location of T3 only

N

T3

13

Appendix 2

Figure 1 – Image of T3

14

Appendix 3

Tree Survey Data Explanatory Notes

This section explains the terms that may be used in the Tree Survey Data within Section 2.4.

A1.1 General Observations

A1.1.1 Numbering system: Each item of vegetation has its own unique number prefixed by a letter such that T1 = Tree 1,

G2 = Group 2, H3 = Hedge 3, W4 = Woodland 4, S5 = Shrub 5

A1.1.2 Age Categories:

Young Usually less than 10 years old.

Semi-Mature Significant future growth to be expected, both in height and crown spread (typically below

30% of life expectancy).

Early Mature Full height almost attained. Significant growth may be expected in terms of crown spread

(typically 30 – 60% of life expectancy).

Mature Full height attained. Crown spread will increase but growth increments will be slight (typically

60% or more of life expectancy).

Veteran A level of maturity whereby significant management may be required in order to keep the

tree in a safe condition.

Over Mature As for veteran trees except management is not considered worthwhile.

A1.1.3 Species: Common names and Latin names are given.

A1.1.4 Height: Measured from ground level to the top of the crown.

A1.1.5 Stem Diameter: Taken at 1.37 m above ground level where possible. On multi-stemmed trees this

measurement may be taken at ground level, though usually an indication of the number of

stems and average diameter is given e.g. 3 x 30cm.

A1.1.6 Crown Spread: Measured N,E,S & W taken from the centre of the stem and usually rounded up to the

nearest meter.

A1.1.7 Observations: If a tree’s position is considered to be relevant it will be commented upon (e.g. overhanging a

children’s play area). Tree form and pruning history are also recorded along with an account

of any significant defects. Defects and descriptive terms are dealt with in more details at the

end of this section.

A1.1.8 Recommendations: Usually based on any defects observed and intended to ensure that the tree is in an

acceptable condition.

A1.1.9 Priority Scale: Depending upon the threat posed by the tree, and the likelihood of failure, recommendations

should be carried out according to the following priority scale:

Urgent To be carried out as soon as possible

Very High To be carried out within 1 month

High To be carried out within 3 months

15

Moderate To be carried out within 1 year

Low To be carried out within 3 years

A1.1.10 Inspection Frequency: An interval of 6 months, 1 year, 1.5 years or 3 years is allocated before the next inspection

is due. Wherever practical, consideration should be given to seasonal changes so that

deciduous trees are not always surveyed in winter when they have no leaves, or in summer

when leaves may obscure branches within the upper crown.

A1.1.11 Vigour: An indication of growth rate and the tree’s ability to cope with stresses;

High Having above average vigour

Moderate Having average vigour

Low Having below average vigour

Very Low Tree is struggling to survive and may be dying

A1.1.12 Physiological Condition

Good Health and no symptoms of significant disease

Fair Disease present or vigour is impaired

Poor Significant disease present or vigour is extremely low

Very Poor Tree is dying

A1.1.13 Structural Condition:

Good Having no significant structural defects

Fair Some defects observed though no high priority works are required

Poor Significant defects found. Tree requires monitoring or remedial works.

Very Poor Major defects which will usually require significant remedial works or tree removal

A1.1.14 Amenity Value:

Very High Exceptional specimen, observable by a large number of people

High Attractive specimen, observable by a significant number of people

Moderate One of the above factors is not applicable

Low Unattractive specimen or largely hidden from view

A1.1.15 Life Expectancy: The estimated number of years before the tree may require removal. Classified as (<10), (10

– 20), (20 – 40), or (40+)

A1.1.16 Retention Category: These are explained in detail in Table 2 Cascade chart for tree quality assessment on the

following page which is taken from BS5837.

A1.2 Evaluation of Defects

A1.2.1 Cavities, wounds, deadwood etc are all evaluated as follows:

Major Such that structural integrity is, or will become, compromised and the

tree is, or will inevitably become, hazardous.

Significant A defect that may over time become a major defect, though not

necessarily so. This will depend on the vigour of the tree and its ability to

deal with decay etc.

Minor A defect that is not likely to compromise the tree’s structural integrity.

16

Cascade chart for tree quality assessment

Category and definition Criteria (including subcategories where appropriate) Identification on plan

TREES UNSUITABLE FOR RETENTION see Note

Category R

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

Trees that have a serious, irremediable, structural defect, such that their early loss is

expected due to collapse, including those that will become unviable after removal of other U

category trees (i.e. where, for whatever reason, the loss of companion shelter cannot be

mitigated by pruning);

Trees that are dead or are showing signs of significant, immediate, and irreversible overall

decline;

Trees infected with pathogens of significance to the health and/or safety of other trees

nearby (e.g. Dutch elm disease or very low quality tree suppressing adjacent trees of better

quality.

NOTE Habitat reinstatement may be appropriate (e.g. R category tree used as a bat roost: installation of bat box in nearby tree).

DARK RED

TREES TO BE CONSIDERED FOR RETENTION

Category and definition Criteria Identification on plan

1 Mainly arboricultural values 2 Mainly landscape values 3 Mainly cultural values, including conservation

Category A

Trees of high quality with an estimated remaining life expectancy of at least 40 years

Trees that are particularly good examples of their species, especially if rare or unusual; or those that are essential components of groups, or formal or semi-formal arboricultural features (e.g. the dominant and/or principal trees within an avenue)

Trees, groups or woodlands of particular visual importance as arboricultural and/or landscape features

Trees, groups or woodlands of significant conservation, historical, commemorative or other value (e.g. veteran trees or wood-pasture)

LIGHT GREEN

Category B

Trees of moderate quality with an estimated remaining life expectancy of at least 20 years

Trees that might be included in category A, but are downgraded because of impaired condition (e.g. presence of significant but remediable defects including unsympathetic past management and storm damage), such that they are unlikely to be suitable for retention for beyond 40 years; or trees lacking the special quality necessary to merit the category A designation

Trees present in numbers, usually growing in groups or woodlands, such that they attract a higher collective rating than they might as individuals, or trees occurring as collectives but situated so as to make little visual contribution to the wider locality

Trees with material conservation or other cultural value

MID BLUE

Category C

Trees of low quality with an estimated remaining life expectancy of at least 10 years, or young trees with a stem diameter below 150mm

Unremarkable trees of very limited merit or such impaired condition that they do not qualifying in higher categories

Trees present in groups or woodlands, but without this conferring on them significantly greater landscape value; and/or trees offering low or only temporary screen benefits

Trees with no material conservation or other cultural benefits

GREY

Taken from BS5837:2012 Trees in relation to design, demolition and construction – Recommendations

17

Appendix 4 Tree Protection Plan

18

Trees

Canopy spread

Root Protection Area (RPA)

Location of Protective Fencing

Boundary Line

Location new buildProperty 76

Property 75

T3

KEY

5m0m 10m

19

Appendix 5 Scaffolding within Root Protection Area

Adapted from BS5837: 2005

20

Appendix 6 Specification for protective fencing

Adapted from BS 5837: 2012

21

Appendix 7 No Dig Driveway and Parking surfaces within the Root Protection Area of Trees – the following may afford a solution

The use of Geowebtm/ Neowebtm or similar, as a cellular confinement system is recommended for No Dig

situations. All details can be obtained from the supplier, Cooper Clarke Group, Ground Engineering Division,

regarding the use of Geoweb tm Tree Root Protection System. Contact details are:

Cooper Clarke Group

Ground Engineering Division

Bloomfield Road

Farnworth

Bolton

BL9 9LP

Telephone 01204 862222

www.civilsandlintels.co.uk

In particular the following brochure provides the necessary design information and the company offers technical

support to potential clients.

http://www.civilsandlintels.co.uk/pdfs_new/Treeguard%20Brochure.pdf

Tensar are manufacturers and suppliers of Geogrid and Geoblock solutions

http://www.tensarinternational.com/housing_development.asp

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Birtle Tree Services Ltd Terms and Conditions

1. Birtle Tree Services Ltd (BTS Ltd) and any appointed service provider agree to undertake any instructions to a

proficient standard to relevant guidelines and standards that might apply. 2. On delivery to the client of a completed

report or completion of any agreed work payment will be due. Any reports shall remain the property of BTS Ltd until

payment is received in full. Unless otherwise stated the estimates or quotations given prior to the commencement

of work do not include VAT which is applied at 20%. BTS Ltd should be notified about complaints and enquiries

within 7 days of the date stated on the invoice. 30 days of credit are normally applied to commercial invoices. 14

days credit to private individuals. Different terms can be discussed with BTS Ltd prior to commencement of

instructions. BTS Ltd reserve the right to charge interest on overdue accounts at the rate of 1% per week applied to

the owed balance. Clients will be liable to reimburse BTS Ltd any costs that are incurred during the process of

recovery of overdue payments. This will include court costs, letters, phone calls, faxes and visits that are necessary

to pursue the recovery. 3. During the course of activities BTS Ltd disclaim liability for damage to underground

services not clearly indicated before work commences. BTS Ltd will of course endeavour to avoid such damage. 4.

Surveys and reports remain the property of BTS Ltd and cannot be shown copied or distributed with our prior or

subsequent written permission. 5. The contents of reports such as tree heights, life expectancies and age of trees

are approximate. Trees are surveyed from the ground only. The findings of reports are preliminary in nature. 6.

Activities such as taking root samples for laboratory analysis are not taken unless by prior arrangement. BTS Ltd

reserves the right to appoint suitable service providers to perform such tasks if deemed necessary by BTS Ltd. 7. A

sketch or non-scale drawing is usually provided with the report for illustration purposes only. 8. Condition

assessments on all trees in any type of survey are usually provided as part of the tree report. 9. Professional

Indemnity Insurance is provided up to £500,000 for each and every claim on any advice or Consultancy given by BTS

Ltd. 10. On instruction BTS Ltd can organise/provide any necessary tree works or other works recommended,

required or necessary that is not a direct BTS Ltd business activity. It should be noted that other service providers

judged by BTS Ltd to be suitable for the task would be appointed in these circumstances. Appointed service

providers will provide their own labour, tools, insurances, Health and Safety policies, supervision and methods

statements etc, independent of BTS Ltd, The client will be expected to comply with any further payment and other

terms and conditions served by the so appointed service provider when notified. Payment for the activities of

service providers will be made direct to BTS Ltd. 11. Quotations or estimates for tree work or other given by BTS Ltd

will provide for one telephone enquire to the Local Authority if deemed necessary by BTS Ltd prior to the

commencement of work. If as a result of the initial telephone enquiry further communication with the Local

Authority is required by BTS Ltd a further charge will be made which will be added to the final invoice made by BTS

Ltd for any work carried out. BTS ltd will endeavour to inform the client if this is required. 12. BTS Ltd cannot be

held responsible for actions, conduct or behaviour of any appointed service provider during the course of the agreed

works. BTS Ltd is satisfied that all appointed service providers work to a high standard and appoints them in good

faith., Genuine complaints about the work or conduct of the appointed service provider will be passed on to

whomever it concerns, Further links between BTS Ltd and the service provider involved will be reviewed in these

circumstances. 13. If BTS Ltd has not been provided with any information to suggest damage is occurring to the

subject property, doubt pertaining to the building structure will need to be referred to a structural engineer. BTS Ltd

cannot provide information on the structural integrity of drains or buildings or the involvement of any tree in

relation to this structural integrity.