ATTACHMENTS UNDER SEPARATE COVER Thursday 26 July 2018 · 2018. 9. 20. · Arboricultural Report...

Town of Gawler Council Assessment Panel

ATTACHMENTS UNDER SEPARATE COVER

Thursday 26 July 2018 Item Page No

5.6 Development Application: 490/344/2016 269 Applicant: MADHAWK PTY LTD Address: 46-48 Jane Street WILLASTON 5118 Nature of Development: Land Division (2 into 3)

Attachment 1 –

Attachment 2 –

Attachment 3 –

Attachment 4 –

Application Plans and Documentation

Applicants Arborist Report for Removal of

Regulated Street Tree

Council’s Independent Arborist Report

Applicants Arborist Report for consideration of Tree Protection measures

270 271

281

284

Page 269 of 478

SA Water Contact Details

Michael Zaina

Zaina Stacey Pty Ltd

Phone 8379 7979

F154744

C24627

D20683

D36357

F154720

F154724

D74128

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ZAINA STACEY

D E V E L O P M E N T C O N S U L T A N T S

490 / D020 / 16

Office:

Post:

13 Avenue Road, Frewville SA

PO Box 1000, Torrens Park SA 5062

Phone:

Email:

08 8379 7979

[email protected]

All measurements in metres unless shown otherwise.

Rev. Date Description

23/05/2016

Site Address:

Suburb:

Hundred:

SHEET 1 OF 1 SHEETS

Land division application:

46 and 48 Jane Street

Willaston

Mudla Wirra

Total area of site:

Area of reserve provided:

No. of existing allotments:

3460m²

0m²

2

No. of proposed allotments:

No. of additional allotments:

3

1

Subject land details:

Allotment 73 in D18251

Title(s):

C's.T. 5991 / 17 and 5679 / 263

Annotations:

16146Reference:

Do not scale drawing. Original sheet size is A3.

Original issue

Town of Gawler

NO

RT

H

All measurements are subject to survey and final plan

of division. Always check the current certificate(s) of title

14/12/2017 Boundary of allotments 1 and 48 amendedA

09/07/2018 Boundary of allotments 1 and 48 amendedB

Refer to the building plans for the proposed dwelling(s).

Owner/developer or building designer to advise if the

configuration of the dwellings change in any form.

for any easement(s) and annotations(s) that affect the

within land.

Allotment 100 in D74128

Portion of the allotment 48 marked A is subject to a

service easement to the Council for the area for

drainage purposes.

Attachment 1

70 of 478

AutoCAD SHX Text

73

AutoCAD SHX Text

100

/10 Arboricultural Report for Aspire Himes (Tony Esposito)– Site Address: 46 – 48 Jane Street, Gawler SA 5118 ©The Adelaide Tree Surgery Pty Ltd – A Division of Tree Aware Ref: TATSME00893 - 6/07/2017.

3 Ellemsea Circuit, Lonsdale SA 5160

ABN: 33 099 478 994

Ph: 8371 5955 Mobile: 0408 086 774 Fax: 8371 5955 Email: [email protected]

Arboricultural Assessment/ Report

Prepared for: Aspire Homes Tony Esposito

55 Murray Street Gawler SA 5118

Site located at: 46 – 48 Jane Street Willaston SA 5118

In regards to: Callistemon viminalis (Weeping Bottlebrush)

Prepared by: Mark Elliott Diploma Arboriculture/Consulting Arborist

Attachment 2

Page 271 of 478


3 Ellemsea Circuit, Lonsdale SA 5160

ABN: 33 099 478 994

Ph: 8371 5955 Mobile: 0408 086 774 Fax: 8371 5955 Email: [email protected]

CONTENTS Page No.

1.0 Introduction 3

2.0 Terms of Reference 3

3.0 Limitations and Constraints (Caveat Emptor) 3

4.0 The Site 3

5.0 The Tree 4

6.0 Discussion 5

7.0 Legislative Requirements 6

8.0 Recommendation 8

Appendix A: References 9

Appendix B: Limitations and Disclaimer 10

Page 272 of 478


1.0 INTRODUCTION

1.1 This report has been commissioned by Mr Tony Esposito of Aspire Homes and is in relation to Callistemon viminalis (Weeping Bottlebrush) and proposed development at 46 – 48 Jane Street, Willaston SA 5118.

1.2 The report provides a description of the subject tree and its health and

condition. The report also mentions the proposed development for 46 – 48 Jane Street, Willaston, which is currently vacant.

2.0 TERMS OF REFERENCE

2.1 Email instructions were received in June 2017.

2.2 The instructions requested:

2.2.1 Inspect the Bottlebrush Tree located in council verge area in relation to proposed development.

2.2.2 Current health and condition of the tree

2.2.3 Recommendation

3.0 LIMITATIONS AND CONSTRAINTS

3.1 This is a stage 1 'Ground report'. The tree was inspected from the ground only. A climbing inspection was not recommended or performed.

3.2 The report reflects the tree as found on the day of inspection. Any changes

to site conditions or surroundings, such as construction works or landscape works, may alter the findings of the report.

3.3 No soil samples were taken for laboratory analysis.

3.4 The inspection period to which this report applies is two months from the

date of the report.

3.5 The roots were not inspected below ground. 4.0 THE SITE

4.1 The subject tree is located in the council verge area at the front of 46 – 48 Jane Street, Willaston SA 5118. Jane Street is a highly vegetated street with a large number of street trees growing along the verge area.

4.2 Willaston is located within the boundaries of The Township of Gawler. Gawler is located approximately 50 kilometres north of he Central Business District (CBD).

4.3 Gawler is an old township and the area has a large number of trees

located throughout. These consist of small to very large trees and a variety of species.

Page 273 of 478


5.0 The Tree:

5.1 The subject tree is identified as a Callistemon viminalis (Weeping

Bottlebrush), which has an average combined stem circumference when measured at one metre above natural ground level of .333 meter therefore the Bottlebrush Tree can be classified as a “Regulated Tree” as per Development Regulations 2008.

Figure 1 showing an aerial view of site and the Bottlebrush Tree is highlighted in Red.

Figure 2 shows the subject Bottlebrush Tree located in front of 46 – 48 Jane Street, Willaston SA 5118.

Page 274 of 478


5.2 The tree is located approximately 2 metres from the neighbouring properties boundary line to the left and approximately 4.5 – 5 meters from the neighbouring boundary –line of the right hand side.

5.3 The tree is a multi-stemmed tree that the stems originate from the base of the tree. The tree is an approximate height of 6 – 7 meters and the crown is typical of this species (rounded) with good foliage density.

5.4 There is evidence of included bark/splitting within the main union of the

tree and it appears that there is decay within this main union (Refer Figure 3).

5.5 The crown of the Bottlebrush Tree is showing good density and vigour, which is typical of this species growing within this environment.

6.0 DISCUSSION

6.1 The subject Bottlebrush Tree is a very mature specimen and based on the findings within this report the tree has some concerns based around the trees structural integrity. The structure of this tree is very different to a large number of the other street trees of the same species, which are located along Jane Street. A majority of the trees have better more preferred structure, which is a single trunk originating from ground level before dividing and then the crown forming.

6.2 Unfortunately there are limited remedial options available to remediate a tree of this maturity with the type of union this tree has. Ideally the tree would of benefited with some formative pruning when the tree was at a young age.

6.3 It is also proposed to develop the subject land that this tree is located in front of. Due to the limited street frontage the vacant land processes, it will

Figure 3 shows the Bottlebrush Tree and the main union at the base were there is splitting and signs of decay. The highlighted area is where the splitting within the main union has occurred.

Page 275 of 478


be difficult to develop without entering the Bottlebrushes Tree Protection Zone (TPZ) or Structural Root Zone (SRZ).

6.4 The Tree Protection Zone of the tree has been calculated at 6.12 meter

radius and the Structural Root Zone of the tree has been calculated at 3.09 metre radius.

6.4.1 Plans for proposed Development:

6.5 Fortunately the street is highly vegetated with this species of tree and as

previously mentioned.

6.6 Based on the inspection of the subject tree, I do not believe that the tree has a useful life expectancy worthy or retention and I also believe the tree will prevent reasonable development. Unfortunately sue to the limited frontage that this vacant land has, there is limited opportunities to develop this area.

7.0 LEGISLATIVE REQUIREMENTS

7.1 The inspection of the tree identifies an average stem circumference measurement, when the measurement is greater than .625 metres, therefore the tree is deemed to fulfil the criteria of a “Regulated Tree” as contained within the Development Regulations 2008.

Section Definition Findings 70 Development in balance with

preserving regulated trees that demonstrate one or more of the

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Page 276 of 478


following attributes:

a significantly contributes to the character or visual amenity of the locality

Yes – the tree does contribute to the local area but due to the large number of trees growing within this street I don’t believe the tree significantly contributes.

b is indigenous to the local area

No – the tree is not a local indigenous species.

c Rare or endangered species No – the tree is not a rare or endangered species.

d represents an important habitat for native fauna

No – there were no hollows visible at the time of the inspection for the tree to be any value for habitat.

Section

Definition Findings

228

A regulated tree should not be removed or damaged other than where it can be demonstrated that one or more of the following apply:

a

the tree is diseased and its life expectancy is short;

Yes – I believe due to the trees poor structure within the base of the tree I believe the trees life expectancy is limited.

b

the tree represents a material risk to public or private safety;

Yes – I believe the tree will represent risk to public if the tree failed die to poor union.

c

the tree is causing damage to a building;

N/a

d

development that is reasonable and expected would not otherwise be possible;

Yes – I believe the development is reasonable and the tree does have an effect on the proposal.

e

the work is required for the removal of dead wood, treatment of disease, or is in the general interests of the health of the tree.

N/a

Page 277 of 478


8.0 RECOMMENDATIONS

8.1 Based on the findings within this report, I recommend that the subject Bottlebrush Tree be removed. The main reasons that support my decision is that I believe the tree has a limited useful life expectancy and also the tree will prevent reasonable development.

8.2 Consideration should be given to contributing money to the nations tree fund due to the limited amount of space in front of this property and it is also highly recommended that the development is landscape using appropriate trees to maintain the amenity value of the area.

Mark Elliott Consulting Arborist/Diploma Arboriculture .

Page 278 of 478

/10 Arboricultural Survey/Audit for Coopers Brewery, 461 Regency Road, Regency Park ©The Adelaide Tree Surgery Pty Ltd – A Division of Tree Aware Ref: TATSTF018- 6/07/2017.

APPENDIX A: REFERENCES Gawler (CT) Development Plan consolidated 28th April 2016

Mattheck, C. & Breloer, H. (1994) The Body Language of Trees a handbook for failure analysis HMSO, London. The Development Act (1993) South Australian Legislation. The Development Regulations (1998) South Australian Legislation Australian Standards 4373 Pruning amenity trees 2007. Matheny, N.P: & Clark, J.R (1994) Evaluation of Hazard Trees in Urban Areas. ISA Publications.

Page 279 of 478

/10 Arboricultural Survey/Audit for Coopers Brewery, 461 Regency Road, Regency Park ©The Adelaide Tree Surgery Pty Ltd – A Division of Tree Aware Ref: TATSTF018- 6/07/2017.

APPENDIX B: DISCLAIMER This report only covers identifiable defects present at the time of inspection. The author accepts no responsibility and cannot be held liable for any structural defect or unforseen event/situation that may occur after the time of inspection, unless clearly specified timescales are detailed within the report. The author cannot guarantee trees contained within this report will be structurally sound under all circumstances, or that the recommendations made will result in the tree being made safe. Unless specifically mentioned, this report will only be concerned with above ground inspections, undertaken visually from ground level. Trees are living organisms and cannot be declared as safe under any circumstances. The recommendations are made on the basis of what can be reasonably identified at the time of inspection therefore the author accepts no liability for any recommendations made. Care has been taken to obtain all information from reliable sources. However, the author can neither guarantee nor be responsible for the accuracy of information provided by others

Page 280 of 478

D.Nicolle, Review of report, 48 Jane Street Willaston SA, 17th July 2017, Call.Hark 1

CalyptraPtyLtdtradingas

DeanNicollePh.D.;B.Sc.(Hons.)Botany;B.App.Sc.(NaturalResourceManagement)

POBox808MelrosePark,SA5039Phone:0413214303Email:[email protected]:www.dn.com.au

Arboriculture-Botany-Ecology-EucalyptResearch

Review of Tree Report – 48 Jane Street, Willaston, SA

Review of Mark Elliott report regarding a regulated Callistemon ‘Harkness’ (Gawler hybrid bottlebrush) tree

Review of Adelaide Tree Surgery report requested by Scott Twine, Development Assessment Planner at the Town of Gawler Council, on the 14th of July 2017.

Review prepared by Dean Nicolle following a site visits and tree inspections on the 7th of November 2013 and the 27th of March 2015.

Review dated the 17th of July 2017.

Attachment 3

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BACKGROUND I have twice assessed and provided an arboricultural report to Council regarding the subject tree, in reports dated the 7th of November 2013 and the 27th of March 2015. Both of my reports concluded that the tree is regulated (as defined by the Development Act 1993), and recommended that the subject tree be retained. Subsequently, Mark Elliott of Adelaide Tree Surgery has provided Council with an undated arboricultural report on the subject tree. The Town of Gawler Council has asked me to provide comment on this report, with my comments provided below. REVIEW OF THE UNDATED MARK ELLIOT REPORT Species identification In sections 1.1 and 5.1, the Mark Elliott report identifies the tree as a ‘Callistemon viminalis (Weeping Bottlebrush)’. I disagree with this identification. The tree is actually a Callistemon ‘Harkness’ (Gawler Hybrid bottlebrush), which is a characteristic species of many streets in Gawler and Willaston, including Jane Street. Useful Life Expectancy In section 6.6, the Mark Elliott report states ‘I do not believe that the tree has a useful life expectancy worthy of retention…’ I disagree with this statement. My report dated the 27th of March 2015 states a life expectancy of 10 to 20+ years. Tree Protection Zone (TPZ) In section 6.4, the Mark Elliott report states ‘The Tree Protection Zone of the tree has been calculated at 6.12 meter [sic] radius…’ Neither methodology nor calculations are provided for this TPZ. I believe the TPZ provided by Mark Elliot is too large. My report dated the 27th of March 2015 recommends a TPZ of 5.3 metres radius. Tree structure In section 5.4, the Mark Elliott report states ‘…it appears that there is decay within this main union’. I disagree with this statement. I could not identify any decay in the tree. In section 6.1, the Mark Elliott report states ‘The structure of this tree is very different to a large number of the other street trees of the same species, which are located along Jane Street.’ I disagree with this statement. The structure of the tree, whilst not ideal, is typical of the species and is typical of other trees of the species growing as street trees in Jane Street.

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In section 6.2, the Mark Elliott report states ‘Unfortunately there are limited remedial options available to remediate a tree of this maturity with the type of union this tree has.’ While this statement in itself is true, it suggests that remedial actions are necessary, whereas in my opinion remedial actions are not necessary in this tree. Addressing the Development Plan Section 7.0 of the Mark Elliott addresses the Town of Gawler Development Plan. My comments, where differing from the opinion of those stated by Mark Elliott, are tabulated below.

Section Criterion Findings of Mark Elliott My comments 228 (a) The tree is diseased

and its life expectancy is short;

‘Yes – I believe due to the trees poor structure within the base of the tree I believe the trees life expectancy is limited.’

I disagree with this finding. In my opinion, the tree has the potential to live for another 10 to 20+ years.

228 (b) The tree represents a material risk to public or private safety;

‘Yes – I believe the tree will represent risk to public if the tree failed die [sic] to poor union.’

I disagree with this finding. In my opinion, the tree represents a low and acceptable level of risk to safety.

228 (c) The tree is causing damage to a building;

‘N/a’ I disagree that this criterion is not applicable. It is applicable, and the tree is not causing damage to a building.

228 (d) Development that is reasonable and expected would not otherwise be possible;

‘Yes – I believe the development is reasonable and the tree does have an effect on the proposal.’

An arborist is not qualified to assess this criterion. A planner should assess this criterion.

Recommendations In section 8.1, the Mark Elliot report states ‘…I recommend that the subject Bottlebrush Tree be removed. The main reasons that support my decision is that I believe the tree has a limited useful life expectancy and also the tree will prevent reasonable development’. I disagree with this recommendation, and the justification used for the recommendation. My report dated the 27th of March 2015 states a life expectancy of 10 to 20+ years. Whether the tree prevents reasonable development or not is a question for a qualified planner, not an arborist. I thank you for the opportunity to provide this arboricultural review. If you require further information or clarification please contact me for assistance.

Dean Nicolle Ph.D.; B.Sc. (Hons.) Botany; B.App.Sc. (Natural Resource Management).

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