arboricultural method statement

8/4/2019 Arboricultural Method Statement

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Judith Moore 18-11-10

Arboricultural Method Statement

Revision - Preliminary

Site 63 Manor Road, Chigwell, Essex, IG7 5HP

Client Mr Imran UmraniContact Mr Imran Umrani, 59 Manor Road, Chigwell, Essex

07956 360331

To be read in conjunction with Tree Constraint Plan Drawing No. IU/MR01Tree Protection Plan Drawing No. IU/MR/03BS5937:2005 Tree Report, 63 Manor Rd, Rev A

Prepared by J M Moore B.Sc (hort) Tech Cert (Arbor A) M.Arbor.A

J M MOOREHope Cottage

40 Scotts Hill

Southminster

Essex CM0 7BG

Tel - 01621 772586

Mob - 07912 617939Email - [email protected]


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Contents

1 Statement of Purpose

2- Arboricultural Impact Assessment

3 Sequence of events

4 Communication and Supervision

5 Works to existing trees

6 Protective Fencing

7 Additional Ground Protection for access

8 Storage

9 - Demolition

10 Ground levels

11 Pile and beams construction

12 Services and Rain Water Harvester

13 Removal of existing drive

14 Construction of new drive

15 Front boundary

16 Soft landscaping

17 General site care

Appendix 1 Protective fence detailAppendix 2 Ground protection


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1 Statement of Purpose

1.1 This Method Statement has been written for Mr Umrani, tosatisfy the requirements of the Local Planning Authority (LPA).They have requested an arboricultural method statement, forconsideration in the discharge of conditions of the planningapproval.

1.2 The purpose of the method statement is to minimise the impactof the development and provide an adequate level of protectionfor the existing trees.

2 Arboricultural Impact Assessment2.1 Details of all trees can be found in appendix 1 of BS5837:2005

Trees in relation to construction report for 63 Manor Rd Rev A2.2 The location of all the trees are shown on drawing number

IU/MR/01 Tree constraints plan. The Root Protection area of alltrees to be retained is also shown.

Treeno.&class.

RPAm/sq

RadiofRPA(M)

Tree implicationsassessment

Mitigation to consider

T1

B

OakQuercus robur

127 6.36 The development works areoutside the RPA (rootprotection area) and crownspread

If the tree is protected inline with BS5837:2005,section 9, it should not beaffected by thedevelopment

T2

B

OakQuercus robur



T3

B

OakQuercus robur



T4

B

OakQuercus robur

132 6.5 The development works areoutside the RPA (rootprotection area) and crown

spread

If the tree is protected inline with BS5837:2005,section 9, it should not be

affected by thedevelopment

T5

B

OakQuercus robur

234 8.6 CrownAccess to the site will be alongthe existing drive, below thecrown spread of T5

RootsThe existing drive, within thecrown spread, will be replaced

CrownRaise the crown on thesouth side by 2.5-3m to 5mabove ground level, toavoid accidental damage tocrown.

RootsDrive way to be constructedas detailed in theArboricultural method

statement (AMS)T6 Cherry Fell due to condition


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RPrunus spp

T7

B

Cuppressusmacrocarpa

489 12.48 RootsThe existing drive within thecrown spread will be replacedand an area of new driveconstructed.

RootsDrive way to be constructedas detailed in theArboricultural method

statement (AMS)T8

R

CypressesCuppressusmacrocarpa

Fell due to condition

T9

C

Goat willowSalix caprea

8.2 1.6 The development works areoutside the RPA (rootprotection area) and crownspread


T10

C



If the tree is protected inline with BS5837:2005,section 9, it should not beaffected by the

developmentT11

C


65 4.5 RootsAn area of new drive will beconstructed within the RPA

RootsDrive way to be constructedas detailed in theArboricultural methodstatement (AMS)

T12

R

OakQuercus robur

Fell due to condition Plant a replacement tree

T13

R



T14

B-C

OakQuercus robur

215 8.3 CrownThe existing building will needto be demolished on theperiphery of the Crown spreadThe new build is outside thecrown spread

RootsThe existing building will needto be demolished within theRPAThe new build will be within theRPA

RootsDemolition should be in linewith the AMSThe new building should beconstructed with a piledfoundation, to avoid therequirement for trenchfootings within the RPA.

T15

B

OakQuercus robur

152 6.9 CrownAccess to the site will be alongthe existing drive, below thecrown spread of T5

RootsThe existing drive within thecrown spread will be replaced

CrownRaise the crown on thesouth side by 2.5-3m to 5mabove ground level, toavoid accidental damage tocrown.

RootsDrive way to be constructedas detailed in theArboricultural methodstatement (AMS) Remove

the section of drive to thewithin the northern sector ofthe RPA.


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T16

C

Purple leaved plumPrunus pissardii



T17

B-C

Hornbeam

Carpinus betulus

91.6 5.4 The proposed house is outside

the RPA.

If the tree is protected in

line with BS5837:2005,section 9, it should not beaffected by thedevelopmentAdditional groundprotection will be required,for access to the sideelevation of the houseduring construction.

T18

B

OakQuercus robur

113 6 The proposed house isperipheral but outside theRPA.


developmentAdditional groundprotection will be required,for access to the sideelevation of the houseduring construction.Change the length ofgarden wall shown on thedrawing to fence, to negatethe need to excavate atrench footing through theroot area.

T19 Pear

Pyrus comunis

Fell to facilitate the

developmentT20 Pear

Pyrus comunis

Fell to facilitate thedevelopment

T21

C

AppleMalus domestica

84 5.2 Fell to facilitate thedevelopment

T22

B

Hornbeam 104 5.76 RootsThe existing building will needto be demolished within theRPAThe new build will be within theRPAThere is the potential for the

loss of approximately 9 m sqor 9% of the RPA.

RootsDemolition should be in linewith the AMSThe new building should beconstructed with a piledfoundation, to avoid therequirement for trenchfootings within the RPA.Additional groundprotection will be required,for access to the sideelevation of the houseduring construction, toreduce the area of RPA thatcould be lost.

G1

C

3x hornbeamcarpinus betulus

9 1.6 CrownThe crown of the trees will beclose to the proposedswimming pool room

CrownReduce back the crown onthe south west side by 2m,to reduce the potential foraccidental damage. Thetrees are young and wouldbe expected to recover


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from any punning.

T23

R



T24

B

HornbeamCarpinus betulus

91 5.4 RootsThe new build will be within the

RPAThere is the potential for theloss of approximately 5 m sqor 5% of the RPA.

RootsThe new building should beconstructed with a piledfoundation to avoid therequirement fro trenchfootings within the RPA.Additional groundprotection will be required,for access to the sideelevation of the houseduring construction, toreduce the area of RPA thatcould be lost.

T25

R



T26

R



T27

C




T28

C

Cherry plumPrunus cerasifera


If the tree is protected inline with BS5837:2005,section 9, it should not be


T29

R



T30

B

OakQuercus robur



T31

B

OakQuercus robur

165 7.3 The swimming pool will be inthe RPA and result in the lossof around 20% of the root area

Fell, to facilitate thedevelopment.Plant replacement semi

mature tree of samespecies.

T32

B

OakQuercus robur



T33

B




T34

B-C

Oak

Quercus robur

196 7.9 The development works are

outside the RPA (rootprotection area) and crownspread

If the tree is protected in

line with BS5837:2005,section 9, it should not be


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T35

B

OakQuercus robur



developmentT36

B




T37

B




T38

171

CypressesCuppressus

macrocarpa

171 7.4 The development works areoutside the RPA (root

protection area) and crownspread

If the tree is protected inline with BS5837:2005,

section 9, it should not beaffected by thedevelopment

T39

R

OakQuercus robur

Fell due to condition Plant a replacement tree

T40

B




3 Sequence of Events3.1 Pre- commencement site Meeting3.2 Tree Works and tree removal3.3 Erect permanent tree protection fencing3.4 Installation of additional ground protection3.5 Demolition3.6 Construction of the building3.7 Installation of services3.8 Hard landscaping works3.9 Removal of protective fencing around all other trees

3.10 Soft landscape works

4 Communication and Supervision4.1 Prior to commencement of works, a site meeting between all

relevant parties should take place, to clarify responsibilities andparticular site issues. This meeting should include, but is notlimited to, arboricultural consultant, site manager, tree surgeon,engineer and if applicable the Councils Arboricultural Officer.

4.2 If changes should arise the site manager will inform thearboricultural consultant who will assess the situation and make

the appropriate recommendations. The consultant will liaise with


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and advise the LPA if changes to the method statement arerequired.

4.3 A copy of the method statement will be retained on site and thesite manager will be responsible for ensuring operatives adhereto the methodologies.

5 Removal andworks to existing trees5.1 Trees to be removed.

Due to condition T6, T8, T13, T12, T23, T25, T26 and T36To facilitate the development T19, T20, T21 and T31Trees are to be felled inline with BS3998 and roots are to beremoved using a stump grinder, if they need to be removed.

5.2 Works to existing treesT5 OakRaise the crown on the western side, over the driveway, to aheight of 4m. This will allow access for construction vehicles. Allthe branches are to be cut back to appropriate pruning points.T15 OakRaise the crown on the western side, over the driveway, to aheight of 4m. This will allow access for construction vehicles. Allthe branches are to be cut back to appropriate pruning pointsT18 OakReduce back secondary growth on the south western side of thecrown by 1.5m. This should provide adequate clearance for thescaffold, and reduce the potential for accidental damage to the

crown during the construction process.T22 HornbeamReduce back secondary growth on the south western side of thecrown by 1.5m. This should provide adequate clearance for thescaffold, and reduce the potential for accidental damage to thecrown during the construction process.

Any pruning works required will be carried out by a competentarborist, in line with BS3998:1989

6 Protective Fencing6.1 All trees to be retained will be protected by a total exclusion

zone, the boundaries of which will be defined by protectivefencing. This is to be carried out prior to the developercommencing on site

6.2 The fencing is to be set out in line with drawing numberIU/MR/03, tree protection plan.

6.3 The fencing is to be of 1.8m steel mesh, wired to a framework ofsteel scaffold poles as detailed in BS5837:2005 section 9.3figure 3. (See appendix 1)

6.4 Once erected, the fencing will have all weather notices attached

to the barrier worded Construction Exclusion Zone Keep out6.5 There is to be no access within the protected area, with the


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6.6 The fencing will not be removed until all construction of buildingsand hard surfaces are complete

7 Additional ground protectionsee also drawing number LSI/HG/02

7.1 The area between the eastern wall of the proposed house andtrees, number T17, T18, T22, G1 and T24, will require additionalground protection, for the area that lies within the RPA of thesetrees. For pedestrian access this should be protected with geo-textile, laid over the existing soil level. Over this should be laidabutting scaffold boards, to reduce potential ground compactionfrom pedestrian access, in line with BS5837:2005 section 9figure 3. Scaffold will be required to be erected over this area,adjacent to the outside of the tree protection fencing.

7.2 However, this will also be a main access to the rear of thebuilding during the construction process and, if wheeled ortracked vehicle access is required, the ground protection willneed to be designed by an engineer, to take into considerationthe potential loading of the area.

7.3 An area, between the flank wall of the western wing of the houseand the protective fence around T14, will require additionalground protection, as above, within the RPA of T14.

8 Storage of Materials8.1 There will be adequate room for the storage of material, both to

the front and rear of the property, without encroaching into theRoot Protection Areas

9 Demolition9.1 The buildings will be demolished, where possible, into the

existing foot print of the buildings. Particular care will need to beimplemented when demolishing the main building, adjacent toT14, where the building is close to the periphery of the crown ofthe tree. Netting should be fixed to the outside of the scaffoldsection, running through the crown spread of T14, to minimise

the potential for damage to the trunk from debris.9.2 The western section of the building, within the RPA of T14, will

be demolished to a depth of 250mm below existing ground level.The area above this, out side the foot print of the new building,will be made up with good quality topsoil, to provide asatisfactory rooting environment for T14.

10 Ground levels10.1 For the majority of the root protection areas, ground levels will

not be changed. The exception is the area within the RPA of

trees T5, T7 and T15, where the new driveway will beconstructed. See section 14 and 15 of this document.


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11 Pile and beam construction.11.1 The foundations for the eastern wall of the extension, are to be a

pile and beam construction as detailed by the structuralengineer. This will negate the need for a trench footing within

the RPA of T14.11.2 The foot print of the new house is outside the crown spread of

all the retained trees.11.3 The pile machine will be the smallest practicable machine, to

access the site under the crowns of T5 and T15. It should be atracked vehicle, to reduce ground pressure, and is not toencroach within the protected RPA area.

11.4 Pile and beam will negate the need to excavate deep trenchfootings at this close proximity to tree T14. The maximumexcavation will be 300mm for the ground beam.

12 Service Trenches and Rain Water Harvester12.1 A rain water harvester will be installed, out side the RPA of any

tree. However, if any of the access pipes encroach into the RPAof a tree, the excavation must comply with the following.

12.2 The exact service runs are not known at the time of thisstatement. Again, if there is the need for access into any existingservice runs that are within the RPA of any tree, it must complywith the following.

12.3 The drain will be carefully excavated by hand. Any roots over50mm, which can practically be retained and dug under, will be

retained and protected by wrapping in damp Hessian. Any rootsover 25mm in diameter, which can not be preserved, will bepruned cleanly with a sharp saw or seceteurs by a suitablyqualified person. Exposed roots will be covered with dampHessian and sharp sand.

12.4 The drains will be plastic pipe work, with the minimum possiblenumber of connections within the RPA. The trench will be linedwith a root barrier, to reduce the potential for root encroachmentinto the drains. This will be a proprietary flexible barrier, such asthe Terram root guard or Greenleaf Reroot materials, or similar,installed inline with the manufacturers specification.

13 Removal of existing driveway13.1 The existing driveway is higher than the surrounding soft

landscape areas. Removal of the existing drive way hardsurfacing, within the RPA of T5, T7, T14 and T15, will be carriedout using hand tools only.

13.2 Excavations will extend no deeper than the existing depth of subbase. A hand held pneumatic breaker will be used to break upthe surface. All spoil will be removed from the area in wheelbarrows along scaffold boards, to avoid unnecessary ground

compaction.


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13.3 Any roots over 25mm in diameter will be pruned cleanly with asharp saw or secutuers by a suitable, qualified person. Exposedroots will be covered with damp Hessian and sharp sand, untilthe new base is laid.

14 Construction of new Driveway14.1 The new drive way will encroach into the RPA of T5, T15, T7

and T14. It will be a no dig construction, with a porous surfacetreatment.

14.2 For the areas that are existing grass, existing ground vegetationwill be killed using a translocated, glyphosate based herbicide.The dead vegetation will be removed by hand.

14.3 The drive will be laid on a geo-grid base, backfilled with MOTtype 1, with no fines or similar. This should not be tipped on tothe grid but spread from one end, by hand. The surfacetreatment should be a porous tarmac or block paving, designedby an engineer to meet loading requirements.

14.4 All edging for these areas should be tanilised timber edging,secured with wooden stakes, as concrete kerb edgings wouldrequire damaging excavations into the root area.

15 Front boundary15.1 The front boundary is to be railings, supported on brick piers.

The footings for the piers will be dug within the RPA of the trees,along the front boundary with Manor Road.

15.2 The footings for the piers will be hand dug, to minimise the

damage to the root area.

16 Proposed Landscape Works16.1 Cultivation under the crown spread of protected trees is to be

carried out by hand only, and care paid not to damage existingroots. No mechanical cultivation is to be permitted within the rootprotection areas.

16.2 There is to be no change in soil levels within the RPA of theretained trees.

16.3 New 18-20cm extra heavy standard oak trees (quercus robur)

will be planted as replacements for T14, T31 and T36. They willbe planted in the locations shown on landscape drawing numberIU/MR/02.

17 General Site Care17.1 Site offices will not be located within 3m of the protective fencing17.2 No materials will be stored within 2m of the protective fencing17.3 No transferring of fuels will be permitted within 5m of the

protective fencing.17.4 No fires are permitted within 2m of the protectivefencing.


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Judith

Moore

18-11-10

Appendix1Treeprotectionfencing


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Judith

Moore

18-11-10

Appendix2Groundprote

ctionforpedestrianac

cess

arboricultural method statement

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