ARBORICULTURAL METHOD STATEMENT Central … · ... are the final part of the design phase of the ... 1.3 The Arboricultural Method Statement ... then implemented through inclusion

ARBORICULTURAL METHOD STATEMENT (AMS) (Provisional) Central Sussex College, Crawley Campus Phase III College Road, Crawley, RH10 1NR March 2012

John Cooban CMLI M.Arbor.A 109 Hazelwick Road, Three Bridges, Crawley, West Sussex RH10 1NQ 01293 523863 07730 561171 [email protected]

079: Central Sussex College, Crawley Campus Arboricultural Method Statement (Provisional)

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___________________________________________________________________________________________ John Cooban CMLI M.Arbor.A 2 March 2012

Contents

1.0 Background 2.0 Arboricultural Method Statement (AMS) Appendix A: Tree Protection Schedule Appendix B: Arboricultural Operations Sequence Drawing: 079-02 Tree Protection Plan (TPP) (Provisional) This report should be read with:- Tree Survey Report Tree Survey and Constraints Plan (TCP) BS 5837:2005 Trees in Relation to Construction - Recommendations


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1.0 Background

1.1 Central Sussex College instructed John Cooban CMLI M.Arbor.A to

undertake a tree survey and report in connection with proposed development of land in the southern part of Crawley Campus, College Road, Crawley, RH10 1NR. The tree survey fieldwork was carried out on 20 March 2012.

1.2 The Arboricultural Method Statement (AMS) together with the Tree Protection Plan (TPP) are the final part of the design phase of the overall process described in BS 5837:2005 Trees in relation to construction – Recommendations. The AMS report follows on from the Tree Survey Report and Tree Constraints Plan (TCP), and an arboricultural implications assessment of the client’s development proposals.

1.3 The Arboricultural Method Statement (AMS) incorporating the Tree Protection Plan (TPP) is the documentation which in its final form is intended for submission to discharge a Planning Condition, which is then implemented through inclusion in demolition / construction main contract documentation, and subject to enforcement action by the Local Planning Authority if necessary. The rationale behind construction site tree protection is the probability that accidental or unwitting damage to retained trees or their rooting areas will occur unless measures are designed and put in place physically to prevent or reduce it to acceptable levels.

1.4 Subsequent phases in BS5837: 2005 deal with:- • Construction • Aftercare


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2.0 Arboricultural Method Statement (AMS)

2.1 The AMS follows the recommendations of Section 7 of BS

5837:2005 Trees in relation to construction - Recommendations.

2.2 A Tree Protection Plan has been prepared which shows the trees to be removed, retained and protected.

2.3 Appendix A: Tree Protection Schedule details the removal or protection measures applicable to each tree.

2.3 Appendix B: Arboricultural Operations Sequence outlines the programme for protection measures during the construction phases.

2.4 This AMS is a provisional draft in support of a planning application. A final version may be required to accommodate contractor facilities and detailed amendments for the purpose of discharging planning conditions.

3.0 Summary

3.1 All existing trees are shown as retained except for trees T44, T45 and T46 (all small recently planted Category ‘C’ trees) to be removed due to incompatibility with the layout.

3.2 A combination of contract specified working limits, vertical barriers and ground protection are the general methods to be used for root protection areas (RPAs), trunks and canopies of trees identified for retention.

3.3 An Arboricultural Association approved contractor will be employed for any necessary remedial treework.

3.4 An arboriculturist will monitor the protection scheme for compliance with this Method Statement throughout protection installation, demolition, construction and completion stages.

John Cooban CMLI M.Arbor.A March 2012 This report is valid for the site and tree conditions prevailing at the date of inspection. Its validity is limited to two years from this date, or any earlier event, occurrence or change that might affect tree condition. This report is solely for the purpose of guiding the client’s proposals for existing trees in relation to development. No liability shall be incurred in respect of its use for any other purpose.

079:Central Sussex College, Crawley Campus Arboircultural Method Statement

Appendix ATree Protection Schedule

Protection Note (See Arboricultural Operations Sequence)R

ef N

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Spe

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T 1 OakQuercus robur

16 1100 13.2 548 66 5

7

2.5 B Yes * * * *

H 2 Elaeagnus, Escallonia

1 C Yes * *T 3 Oak

Quercus robur5 110 1.32 5 1.5

1.5 1.51.5

1.5 C Yes * * * *

T 4 Silver BirchBetula pendula

9 220 2.64 22 33 3

2

2 C Yes * * * *

T 5 Silver BirchBetula pendula

9 250 3 28 23 3

3

2 B Yes * * * *H 6 Mixed groups 1-3 C Yes *S 7 Mixed groups 1-2 C Yes *T 8 Cherry

Prunus sp4 110 1.32 5 3

2 12

1.5 C Yes *

John Cooban CMLI M.Arbor.A Page 1 of 6 March 2012




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T 9 CherryPrunus sp

3 70 0.84 2 11 10.5

1 C Yes *S 10 Mixed groups <1 C Yes *T 11 Cherry

Prunus sp3 60 0.72 2 1

1 11

1 C Yes *T 12 Cherry

Prunus sp2 50 0.6 1 1

1 11

1 C Yes *T 13 Cherry

Prunus sp2.5 50 0.6 1 1

1 11

1 C Yes *

T 14 HollyIlex aquifolium

3 130 1.3 5 11.5 1.5

1

0 C Yes *


13 950 11.4 408 77 7

6

2 B Yes *

H 16 Mixed groups <1 C Yes *





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20 1005 12.1 457 78 9

8

3 B Yes *

S 18 Mixed group <1 C Yes *H 19 Mixed groups Yes *T 20 Portugese Laurel

Prunus lusitanica4.5 400 4 50 3

3.5 3.53

1 C Yes *

H 21 Mixed groups 1-2 C Yes *H 22 Mixed groups 1-2 C Yes * *T 23 Oak

Quercus robur17 1020 12.2 471 8

9 67

5 B/C Yes * * * * * *

S 24 Hazel 1 C Yes * *T 25 Oak

Quercus robur17 950 11.4 408 6

4 88

5 B Yes * * * * *

H 26 Beech 1.5 Yes * *





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T 27 Rowan?Sorbus sp

3.5 30 0.36 0 0.50.5 0.5

0.5

1.5 C Yes * * * *


16 720 8.64 235 46 7

6

5 C Off site *


18 900 10.8 367 68 8

6

5 A Off site * *T 30 Alder

Alnus glutinosa16 450 5.4 92 0

2 74

3 C Off site * *T 31 Oak


7 56

6 B Off site * *T 32 Ash

Fraxinus excelsior

18 700 8.4 222 86 9

7

5 C Off site * *T 33 Oak


7 66

2 A Yes * * * * *T 34 Holly

Ilex aquifolium8 290 3.48 38 5

1 41

C Yes * * * * *





ef N

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1.1

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5837

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15 820 9.84 304 106 9

7

4 A Yes * * * * *


15 425 5.1 82 33 3

6

4 A Yes * * * * * *T 37 Oak


7 47

6 A/B Yes * * * * * *T 38 Oak


2 35

0.5 B/C Yes * * * * * *


20 1284 15 707 139 15

15

4 A/B Yes * * * * * * *


17 1060 12.7 509 99 10

9

3 A Yes * * * * *

T 41 CherryPrunus sp

4 50 0.6 1 11 1

1

1.5 C Yes * * *T 42 Cherry

Prunus sp4 50 0.6 1 1

1 11

1.5 C Yes * * *





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1.1

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4 50 0.6 1 11 1

1

1.5 C Yes * * *T 44 Manna Ash

Fraxinus ornus3.5 40 0.48 1 0.5

0.5 0.50.5

1.5 C No

T 45 Manna AshFraxinus ornus

4 50 0.6 1 0.50.5 0.5

0.5

1.5 C No


4 40 0.48 1 11 1

1

1 C No


4 50 0.6 1 11 1

1

1.5 C Yes * * *


079: Central Sussex College, Crawley Campus Arboricultural Method Statement

Appendix BArboricultural Operations Sequence

Demolition Construction / hard landscape Completion / soft landscape1 Construction Exclusion1.1 Construction Exclusion Zone (CEZ) Erect barrier pre-demolition and

maintainMaintain enclosed ground Remove barrier only to enable soft

landscape work2 Protection Above Ground -

Barriers2.1 Barrier as BS 5837:2005 Figure 2 Erect barrier pre-demolition and

maintainMaintain barrier and enclosed ground

Remove barrier only to enable soft landscape work

2.3 Individual tree protection barrier to detail

Erect barrier pre-demolition and maintain

Maintain barrier and enclosed ground


2.6 Height restriction barrier to tree crown clearance height. Scaffold framework crossbar with hazard warning tape/notices. (Supplementary only to Fig 2 barrier, to enable restricted height access where circumstances permit.)

Erect barrier pre-demolition and maintain

Maintain barrier and enclosed ground


2.8 Other barriersiv. Existing site fencing, retained permanently

Identify pre-demolition. Fix signage. Maintain / repair.

Maintain / repair. Maintain / repair.

PROTECTION NOTES PHASE


079: Central Sussex College, Crawley Campus Arboricultural Method Statement

Appendix BArboricultural Operations Sequence

Demolition Construction / hard landscape Completion / soft landscapePROTECTION NOTES PHASE

3 Ground Protection In RPA (Existing / Interim )

3.4 Existing paving/oversite/slab retained

i. Pending topsoiling Define area pre-demolition. No breaking out or deformation by demolition vehicles.

Maintain defined area free from excavation, deformation or compaction until replaced by final surface.

Remove existing paving by hand excavation only to replace with topsoil. Hand fork to de-compact. Hand-held tools only. Work as BS 5837:2005 11.3.5.

iv. Permanently Define area pre-demolition. No breaking out or deformation by demolition vehicles.

Maintain defined area free from excavation, deformation or compaction.

Maintain defined area free from excavation, deformation or compaction. Clean on completion

5 TreeworkTo BS 3998 by Arboricultural Association approved contractor

Pre-demolition attendance for sectional felling and access facilitation pruning at time of barrier/hoarding erection.

Attendance for access facilitation pruning for piling and scaffolding operations.

Attendance for final remedial treework pre completion

6 MonitoringBy arboriculturist

Pre-demolition inspect barriers, treework

Pre-construction and interim inspection of barriers, ground protection, damage avoidance measures to exposed roots and access facilitation pruning.

Pre-completion and final inspection


Documents

ARBORICULTURAL METHOD STATEMENT Central … · ... are the final part of the design phase of the ... 1.3 The Arboricultural Method Statement ... then implemented through inclusion