Arboriculture Report and Impact Assessment Countryside Act 1981 (schedule 5) and included in schedule

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  • Land Adjacent to Meadow Avenue, Bacup OL13 8DF January 2013

    Birtle Tree Services Ltd

    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 and Impact Assessment

    For proposed development at

    Land Adjacent to Meadow Avenue, Bacup OL13 8DF

    Produced by

    Hilary Birtwistle, FdSc (Arb), TechArbor A

    of

    Birtle Tree Services Ltd

    On the instruction of

    Mr E McGuiness

    January 2013

  • Land Adjacent to Meadow Avenue, Bacup OL13 8DF January 2013

    Contents

    1 Introduction 1

    1.1 Instruction and references 1

    1.2 Scope and limitations of the report 1

    2 Site Visit 2

    2.1 Weather Conditions 2

    2.2 Topography and Surfaces 2

    3 Statutory Control and Protection in Respect of Trees and Associated Wildlife 2

    3.1 Standard of Work 2

    3.2 Tree Preservation Orders, Conservation Area Designations and

    Issues of Tree Ownership 3

    3.3 Wildlife 3

    4 Tree Survey 3

    4.1 Tree Survey and Data Collection 3

    5 Proposed Development, Impact Assessment and Mitigation Proposals 5

    5.1 Scope and Limitations of Arboricultural Impact Assessment 5

    5.2 Impact Assessment Data 5

    5.3 Root Protection Area and Construction Exclusion Zone 7

    5.4 Protective Fencing 7

    5.5 Specification for protection to trees during installation of utilities 7

    5.6 Constraints within the Root Protection Area 8

    6 Tree Protection Plan and Arboricultural Method Statement 9

    6.1 Tree Protection Plan 9

    6.2 Arboricultural Method Statement 9

    6.3 Specification for the protection of T1, T2 and T3 9

    6.4 Additional Precautions Outside Fenced Areas 11

    7 Soil Survey and British Geographical Society Survey 11

  • Land Adjacent to Meadow Avenue, Bacup OL13 8DF January 2013

    Appendix 1 Approximate location of development site

    Appendix 2 Image of T1, T2 and T3

    Appendix 3 Tree Protection Plan

    Appendix 4 Tree Survey Data Explanatory Notes

    Appendix 5 Scaffolding within Root Protection Area with Protective Fencing

    Appendix 6 No dig driveway and parking surfaces

    Appendix 7 British Geological Society – Natural Subsidence Report

  • Land Adjacent to Meadow Avenue, Bacup OL13 8DF January 2013

    Page 1

    1 Introduction

    1.1 Instruction and references

    The site consists of a derelict land that has in the past been a coal yard. The site is located on the

    corner of Meadow Avenue and Burnley Road, Bacup. The development proposal is to erect 6 semi-

    detached residential properties. Prior to submission for outline planning permission, the local

    authority planning department have requested an arboricultural survey to be undertaken and

    report to be provided in relation to the poplar tree (T1) that is located on the boundary of the

    development site and the adjacent property, 8-10 Gordon Street, with particular reference to the

    steps to be taken to protect the roots of the tree during planning and construction by means of the

    identification of the Root Protection Area, undertaking an impact assessment and providing

    guidance regarding the controls that are to be put in place during development. Whilst the

    planning department have only requested that the poplar tree be included within the report, the

    root protection area of two other trees (T2 and T3) are included within this report as their roots

    require similar protection.

    Mr E McGuiness, joint owner of the land, has instructed Birtle Tree Services Ltd to undertake an

    arboricultural report including an impact assessment and tree protection plan to ensure the trees

    are sufficiently protected during the construction of the extension.

    1.2 Scope and limitations of the report

    The purpose of the report is, having carried out a visit to the development site to survey the tree

    (T1) which is located to the south of the site, to ascertain whether it will be affected by the

    proposed development in accordance with BS 5837:2012 Trees in relation to design, demolition and

    construction – Recommendations

    The two other trees which are of significant size (T2 and T3) have been included in terms of their

    root protection area but as the planning department had not included these trees in their request

    for an arboricultural report a full survey has not been undertaken and is not deemed to be

    necessary,

    Further, the purpose of the report is to identify the impact of the development on the trees and

    provide guidance to minimise and mitigate 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 trees unless the recommendations of this

    report are carried out under his/her responsibility.

    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

  • Land Adjacent to Meadow Avenue, Bacup OL13 8DF January 2013

    Page 2

    advice of a structural engineer should be sought with regard to appropriate foundation depths for

    new buildings with reference to NHBC Standards Chapter 2.3 (NHBC, 2008).

    The tree that has been surveyed does not appear to be potentially hazardous however this report

    should not be seen as a substitute for a full tree risk assessment or management plan which are

    specifically designed to minimise risk and liability associated with responsibility for trees.

    The Tree Protection Area which is shown in the Tree Protection Plan (Appendix 3) 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.

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

    purpose for which this report has been prepared.

    Please note that all trees are at risk of failure through exceptional weather conditions.

    2 Site Visit

    2.1 Weather Conditions

    Hilary Birtwistle carried out the survey and assessment of the trees 4th January 2013.

    The weather conditions at this time were poor with medium rainfall and heavy rainfall had been

    experienced in the region for a prolonged period of time. Visibility was not impaired. The survey is

    limited to the area shown in Appendix 1.

    2.2 Topography and surfaces

    The area slopes upwards from west to east with a culvert at the western edge. The site has

    previously been a coal yard but is now disused and overgrown although there is little evidence of

    the area being colonised by self seeding native trees or by invasive weeds such as Himalayan

    Balsam.

    The south of the site is very water logged with standing water. There has been very high regional

    rainfall over the previous months and the area is evidently beyond field capacity with obvious

    drainage issues in this area. The north, east and west of the site whilst the soil is at field capacity

    does not show the same level of water logging.

    The trees are located along the southern boundary of the site and are raised approximately 1

    meter above the level of the development site.

    The trees are surrounded by lawned and overgrown garden to the west, south and east.

    3 Statutory Control and Protection in Respect of Trees and Associated Wildlife

    3.1 Standard of Work

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

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

    pounds or competent local authority employed arborist.

  • Land Adjacent to Meadow Avenue, Bacup OL13 8DF January 2013

    Page 3

    3.2 Tree Preservation Orders, Conservation Area Designations and Issues of Tree

    Ownership

    A check needs to be undertaken with the local authority to ascertain whether the trees are subject

    to a Tree Preservation Order. If so any and all works undertaken must have the written consent of

    the local authority prior to work commencing.

    Desk research has indicated that the area is not within a designated Conservation Area however it

    is recommended that any work that may be undertaken to the trees should be approved by the

    tree owners prior to works being undertaken. Whilst the legal position relating to branches over

    hanging means