Council archive · source document
Response to Information Request - OPW13/0669
\O~
~J
"
- --
. -
T
INTERNATIONAL
HOME BROKERS LIMITED
I lfr"I ~ ~ ~ fi~rl~i1IE ~
\3
Australian Office
2/65 Mary
(PO Box 154)
stref
Noosaville, Que nsland 4566
~~.~
Tel: 61-7547 1 811
Hong Kong 2
Email:
O~ice
Room 446, 4/F, New Henry House
10 Ice House S reet, Central, HK
Mobile: 9029 3 88
nigelclark~bigpond.com ~ (~ ;2Srs-~ ~
www.intemationrlhomebrokers.com
Overseas Mobles:
Manila U.K. +44-789 197 800 3
~~~~
Dubai +971-50 868631 Singapore
v-1, ~-b
ABN 17010838 83 ACN 010 83 883
With C mpfiments I Box: bl.l.~~:Q.. ft: ..J.D...I ~
See the original
The page text is free to read. Viewing or downloading an original file needs an account.
Log in to see the originalFull text of the other 12 pages
Page 2
"{
2/65 Mary Street (PO
Noosaville Old 4566
Australia
Box 154)
’
II
r
r
I Office
+61754741811
Nigel Clark Mobile:
+61 419671 353
\ Managing Director
Hong Kong Mob:
UK Mob:
+ 852 9029
+ 44
EXHIBITIONS held also in
3688
7891978003
email: [email protected] Dubai,
Singapore, Manila,
www.noosaproperties.com.au
Shanghai & Thailand
www.internationalhomebrokers.com
~:.,
Page 3
5\.rborCare
flueensCand
Spec f ts n tlie Care anManaement ofTrees
ConsuCt ng .Jlrbor sts
Qualified and Accredited
Arboriculture, Horticulture & Environment
4 Habitat Place, Noosa Heads
Tree Assessment Report
October 2013
Prepared for
Man Wit !
Chan
C/O Parkland Hotel
Causeway Bay, Hong Kong
@ Rykeba Pty Ltd (T/A ArborCare Queensland)
ABN: 81 109570881
PO Bo 163 Phone: 54457400
Maple n Old 4560 Mobile: 0408 580 256
Email: [email protected] Fax: 5445 7477
Page 4
I
. I
Tree Inspection Report Manyaii Chan
-
Site Address: 4 Habitat Place, Noosa Heads
Client Site Address
fltChan Nigel Clark 4 Habitat Place
C/O rkland Hotel International Home Brokers Noosa Heads
Caus way Bay 2/65 Mary Street Lot Plan Reference: 19RP900664
Hong ong Noosaville Lot Size 2050 square meters
This r port has been undertaken by AQF level 5 Consulting Arborist -
Phil Best (Dip. Arboriculture, Nat. Cert
Hortic Iture) and overseen by Leo Phelan (Dip.Horticulture & Arboriculture MISAAC. MQAA).
Arbor are Queensland has been commissioned
by Nigel Clark to provide an Arboricultural report on one semi
maturr Eucalyptus tereticornis (Forest Red Gum) situated at the rear of 4 Habitat Place, Noosa Heads. The
adjoin ng allotment is an Environmentally Sensitive Area known as Weyba Creek Bushland Reserve South.
ctlon - Tree Protection Status
This te address is classified by the Sunshine Coast Regional Council as a Category 1 lot (A freehold lot of .3
hecta es or less in the prescribed Noosa area of the protected
veget tion overlay area). All vegetation within a Category 1, 2 or 3
are pr tected and therefore subject to Council Approval.
To re ove protected vegetation an IDAS Form 1 and IDAS Form 6
must e submitted to the Sunshine Coast Regional Council. These
forms are available on the Queensland Government website
(http:l www.dsdip.Queensland.gov.au/forms-templates/sara-idas-
forms html) and can be filled out online at
(wwwdsdip.Queensland.gov.au/MyDAS).
The roprietor of 4 Habitat Place Noosa Heads will be lodging an
applic tion to the Sunshine Coast Regional Council for the proposed
remo al of this Eucalyptus tereticornis (Forest Red Gum).
This rboricultural report is to accompany Section 4 Applications for operational work involving landscaping
-
works
MethQdology
ArborCare Queensland has carried out a visual tree assessment on one semi mature Eucalyptus
tereticornis (Forest Red Gum) situated at the rear of 4 Habitat Place, Noosa Heads. An assessment of
the current condition, considering factors relating to the health, vigour, value, useful life expectancy and
the ability to respond to environmental change and an assessment of the structural integrity, assessing
the overall framework of a tree, has been undertaken.
Consulti g Arborist: Phillip Best
Dip. Arb, Nat. Cert. Hort Page 2/10
Page 5
Tree Inspection Report -
Manyaii Chan
Site Address: 4 Habitat Place, Noosa Heads
Identifying and managing risks associated with trees is a subjective process. Tree evaluation involves
examining a tree for structural defects and associating those defects with a known pattern of failure and
rating the degree of risk. By definition, a hazard requires the presence of both a defective tree and a
target. Unless a target is present a tree cannot be hazardous. As a result, assessing hazard is not
limited to evaluating failure potential on its own. Hazard evaluation must consider the potential
presence of a target and its consequence.
Tree Hazard Assessment involves three components
. A tree with the potential to fail
An environment that may contribute to that failure
A person or object that would be injured or damaged
ArborCare Queensland has used the above rationale in establishing an overall perceived risk that this
Eucalyptus tereticornis (Forest Red Gum)currently exhibits.
The Australian Standard AS4970 -2009 Trees on Development Sites outlines minimum requirements to
maintain tree stability and health. ArborCare Queensland considers this standard to be industry best
practice in arboriculture.
An indicative Tree Protection Zone (TPZ)and Structural Root Zone (SRZ)of each tree is established
from the tree diameter measurements measured at 1.4m above ground level for a single leader tree.
The Structural Root Zone (SRZ)is an area required for tree stability and is constantly moving and
flexing as a result of wind and tree dynamics. A larger area is required to maintain a viable tree. There
are many factors that affect the size of the Structural Root Zone (e.g.tree height, crown area, soil type,
soil moisture). The following formula is used to determine the Structural Root Zone
SRZ radius = (D )C 50)0.42 )C 0.64
The Tree Protection Zone (TPZ)is a combination of root area and crown area which contains vital roots
which collect nutrients and moisture for the tree, and must be protected in order for the tree to survive
The TPZ is an exclusion zone which protects trees during construction related activities and is an area
isolated from construction disturbance, so that the tree remains viable. The following formula is used to
define the Tree Protection Zone,
The radius of the TPZ is calculated for the tree by multiplying its DBH )( 12.
TPZ = DBH )C 12
Please refer to the following table below which provides an indicative SRZ and TPZ requirements for
three different tree diameter sizes.
Tree Diameter (m) Structural Root radius (m) Tree Protection Zone radius
em)
I I .4 2.25 5.0
’--_.- -- ..-
.5 2.45 6.0
.6 2.65 7.0
ArborCare Queensland consulted with Charlie Gilbert Plumbing & Draining Coolum Beach, who
installed and repaired in ground rain water harvesting tanks at 4 Habitat Place.
Photographs of key interest areas are contained within this report for your perusal
Cons ting Arborist: Phillip Best
Dip. Arb, Nat. Cert. Hort Page 3/10
Page 6
Tree Inspection Report -
Manyaii Chan
Site Address: 4 Habitat Place, Noosa Heads
Consultin Arborist: Phillip Best
Dip. Arb, Nat. Cert. Hort Page 4/10
Page 7
Tree Inspection Report -
Manyaii Chan
Site Address: 4 Habitat Place, Noosa Heads
~ .
Tree Height Canopy Spread DBH Structural Root Tree Protection
(approx.) (approx.) Diameter Zone Zone
26m 15m 76cm 2.95m 9.12m
-
- -
Description Tree 1
A healthy, vigorous tree, reasonably free of signs and symptoms of disease ./
Tree with slight decline in vigour, small amount of twig dieback
Tree with moderate vigour, moderate twig and small branch dieback, thinning of crown,
3
poor leaf colour, moderate structural defects that might be mitigated with regular care.
Tree in decline, epicormic growth, extensive dieback of medium to large branches,
2
epicormics
Tree in severe decline, dieback of scaffold branches and/or trunk. Most of foliage from
1
epicormics
o
I Dead Tree
Description Tree 1
Good structure and form typical of the species ./
4 Minor structural defects that could be easily rectified
3 Moderate structural defects that might be mitigated with regular care
2 Significant structural defects that cannot be mitigated
1 Extensive structural defects that cannot be mitigated
o
I Dead Tree
Consulti 9 Arborist: Phillip Best
Dip. Arb, Nat. Cert. Hort Page 5/10
Page 8
Tree Inspection Report -
Manyaii Chan
Site Address: 4 Habitat Place, Noosa Heads
-
Description Tree 1
Tree is in reasonably good condition (any minor structural or health problems can
be mitigated) will survive for many years and can recover from injury or respond to
environmental changes. I
Moderate
Tree has health or structural problems that would require considerable treatment,
has a limited life expectancy, or is less desirable for new site use. Such a tree
usually tolerates less impact and requires a larger tree protection zone.
Tree is in poor condition, with significant defects that cannot be mitigated, has a
~ ~
short life expectancy or has low value in the landscape. The tree is expected to
decline regardless of treatment. The species or individual may have characteristics
that are undesirable for landscapes and generally are unsuited for use areas.
I
I
-
Description Tree 1
Sapling tree and/or recently planted. As a guide a tree up to approx. 5 years of age
Tree rapidly increasing in size and yet to achieve expected size in situation ~
Specimen has reached expected size in situation, with reduced incremental growth
I Tree is senescent and in decline
--
- -
Description Tree 1
I Tree is dead, dying or hazardous and should be removed
I Tree unlikely to survive more than 5 years
I Tree may potentially survive from 5 to 10 years
I Tree may potentially survive from 10 to 15 years
I Tree may potentially survive between 15 and 20 years
I Tree may potentially survive between 20 and 25 years
I Tree may potentially survive than 25 years
more l ~ ;’
Consulti g Arborist: Phillip Best
Dip. Arb, Nat. Cert. Hart Page 6/10
Page 9
Tree Inspection Report -
Manyaii Chan
Site Address: 4 Habitat Place, Noosa Heads
Nigel Clark of International Home Brokers has advised ArborCare Queensland that the house was constructed
in Jul 2001, (approx. 12 years ago).
The ustralian Standard AS4970 -2009 Trees on Development was not in affect at the time of this property
devel pment and installation of the rain water harvesting tanks. However despite this fact there was other
inter ationally recognised criteria for managing trees (at this time) such as the British Standard 5837 ’Trees in
Relat on to Construction’.
The on of the proprietor Manyaii Chan was very nearly injured from a branch being shed from this Eucalyptus
tereti ornis (Forest Red Gum) whilst playing in the rear yard earlier this year. ArborCare Queensland was
unable to see where the branch had failed from during our ground based visual tree inspection. An aerial
climbing assessment and consultation with the proprietor Manyaii Chan is required to ascertain the reason
behin this failure.
Ther are a few dead branches (deadwood)within the canopy of this Eucalyptus tereticornis (Forest Red Gum)
whic is a natural characteristic of trees (refer image 5 page 4). Remedial tree pruning can successfully
rem I iate any risk of branch failure and subsequent injury or damage to property.
The t ee is on a slight lean towards the house resulting from phototrophic growth during its development.
Ther are usually more roots on the tension side (back side of the lean) to anchor the tree against the lean.
Ther are no obvious signs of any recent site disturbance within the Weyba Creek Bushland Reserve South,
thus inimising root plate instability.
Chari e Gilbert Plumbing & Draining Coolurn installed three underground rain water harvesting tanks
appro imately 5 to 6 years ago, in accordance with the (former) Noosa Shire Council approval. Each tank is
appro imately 4.5m long by 2.5m wide. ArborCare Queensland’s assessment has measured the distance from
the ra n water harvesting tank lid to the edge of the tree, with the resultant being is 6.5m.
An aPt roximate area of 5.1 m long by 8.5m (refer to image 8 on page 4) was excavated during the installation
proce s and back filled with Mary River Sand due to the clay content of site soil. These excavations has
unfort nately resulted in the Structural Root Zone of this Eucalyptus tereticornis (Forest Red Gum) being
comp omised.
Bas upon the information supplied by Charlie Gilbert Plumbing & Draining Coolum and site layout the
excav tion zone would terminate approximately 1.5m away from the edge of the tree. That is an encroachment
of 1.4 m within the projected Structural Root Zone.
The e ent and severity of damage cannot be quantified from our visual assessment, and would require further
diagn stic investigations to confirm the extent of damage to the root system.
Interf rence or destruction of a trees root system will have a pronounced and visual effect on the trees health,
appe ranee and stability, for example the dying of limbs on the side that was injured, premature leaf fall, death
or simIy fall over.
With ny root damage there is the possibility of fungi entering the tree through damaged roots. Depending
upon he pathogen that enters the damaged root area it may take several or many years before the tree
declin s or fails.
In 2010 Charlie Gilbert Plumbing & Draining Coolum has repaired the tank closest to the rear
boundary due to
the lift ng of the tank from Eucalyptus tereticornis (Forest Red Gum) roots. Charlie advised that he had to cut
Consulti g Arborist: Phillip Best
Dip. Arb, Nat. Cer!. Hor! Page 7/10
Page 10
~
5\r are !}(
Tree Inspection Report -
Manyaii Chan
Site Address: 4 Habitat Place, Noosa Heads
orl’
roots during the repairs (approximately 150mm in diameter). There are no visible signs of canopy decline
result ng from this root pruning; however the onset of decay often takes several years to become apparent.
Root growth and development excelled within the excavated area as a result of back filling the rain water
harvesting tanks area with Mary Valley Sand.
WhilSl
beco
investigating the site characteristics on Sunshine Coast Regional Council My Maps website, it has
e apparent that the immediate environment surrounding 4 Habitat Place has been mapped under the
Noos Plan as a Flood Hazard Area, Minimum Floor Height, Acid Sulphate Soils & Bushfire Hazard. The
adjoi ng allotment Weyba Creek Bushland Reserve South is mapped as a Biodiversity I Environmental Area.
Despi e being mapped as a Bush Fire Hazard area, there is no fire contaminant line (buffer) between the rear
boun aries of Habitat Place properties which adjoin this Weyba Creek Bushland Reserve South Environmental
area.
Acid ulphate Soils will only become an issue in the event that soil is excavated, exposed to the air, which is
highly unlikely considering the fact that the construction phase is complete.
There is a sewer main contained within an easement, (apex in shape) which runs through 4 Habitat Place
(refer 0 aerial imagery on page 2). Image 7 on page 4 shows an estimated projection of this easement with the
manh Ie cover positioned beneath the pool deck. This easement runs through the structural Root Zone of this
Eucal ptus tereticornis (Forest Red Gum) thus making it difficult to maintain easement infrastructure. Based
upon ite projections ArborCare Queensland believes the centre of this easement to be situated approx. 2.2m
to 2.7 from edge of the tree.
A su y drawing of 4 Habitat Place, Noosa Heads classifies the soil type as a Silt Clay Soil. Typically clay soil
types re associated with a
phenomena called expandable clays (Shrink Swells)
Shrink Swell occurs as a result of changes in the moisture content of clay-rich soils. This is reflected in a
chang in volume of the ground through shrinking or swelling. Swelling pressures can cause heaving, or lifting,
of stru tures whilst shrinkage can cause differential settlement.
The by which the ground can shrink and I or swell is determined by the water content in the near
and th
arount
surfac and the type of clay. Considering the size and stature of this Eucalyptus tereticornis (Forest Red Gum)
current environmental weather conditions there is the possibility that this phenomena may become a
proble as the tree matures and weather patterns change.
Consultin Arborist: Phillip Best
Dip. Arb, Nat. Cert. Hort Page 8/10
Page 11
Tree Inspection Report -
Manyaii Chan
Site Address: 4 Habitat Place, Noosa Heads
anopy of this Eucalyptus tereticornis (Forest Red Gum) can be successfully pruned to mitigate I
iate the risk of branch failure. However when considering the information at hand pertaining to
exca tions within the structural root zone, costs associated with undertaking diagnostic assessments (using
an ai pick and vacuum excavation equipment) and subsequent impact to the condition (health) of this
Eucal ptus tereticornis (Forest Red Gum), and proximity to underground infrastructure, ArborCare Queensland
would support the removal of this tree subject to the validity of information provided to ArborCare Queensland.
FIGURE 81 STRUCTURE OF A TREE IN A NORMAL GROWING ENVIRONMENT
Consulti g Arborist: Phillip Best
Dip. Arb, Nat. Cert. Hort Page 9/10
Page 12
Dlsc~sure Statement
Arborists are tree specialists who use their education, knowledge, training and experience to examine trees,
recommend measures to enhance the beauty and health of trees and attempt to reduce the risk of living near
trees. Clients may choose to accept or disregard the recommendations of the Arborist, or to seek additional
advice.
Arborists cannot detect every condition that could possibly lead to the structural failure of a tree. Trees are living
organisms that fail in ways we do not fully understand. Conditions are often hidden within trees and below
ground. Arborists cannot guarantee that a tree will be healthy or safe under all circumstances, or for a specified
period of time. likewise. remedial treatments cannot be guaranteed.
Treatment, pruning and removal of trees may involve considerations beyond the scope of the Arborists services,
such as property boundaries and ownership, disputes between neighbours. sight lines. landlord-tenant matters
and related. Arborists cannot take such issues into account unless complete and accurate information is given to
them. likewise the Arborist cannot accept any responsibility for the authorization or non-authorization of any
recommended treatment or remedial measure.
Trees can be managed. but they cannot be controlled. To live or work near a tree involves some degree of risk.
The only way to eliminate all risks associated with a tree is to eliminate the tree.
All written reports must be read in their entirety. At no time shall part of the assessment be referred to unless
taken in full context of the written report.
If this report is to be used in a Court of Law or in any legal situation. ArborCare Queensland must be advised in
writing prior to the written assessment being presented in any form.
Leo Phelan
ArborCare Queensland
Diploma Horticulture & Arboriculture MISMC. MQM
Consulting Arborist: Phil Best
Dip. Arboriculture, Nat Cert Hort. Page 10 of 10
Page 13
Ml’\
’"Q~
~
~~,. :) ., .
\~e-od ’N0’J\.l\Q
D
02.
~c.- MC J - o M
’i<~
:
Ot>w
l:!>{or.k’9
QG:>
J+-
-:
0::5
7: J-
s~
(PO Q~\
[OCR of page images]
. =
mh
Mone!
es
S
oe
tie
a
ronal
ie
QO
ee.
:
»
C
=
were
ie.
se
a :
oes
Oz
A\e
OPW
inf
Ob
69
\
=
Seo
WSS
R
Used in these records
Response to Information Request - OPW13/0669Related documentApplication case desk ↗
About this file
- File size
- 8.1 MB (large file)
- File type
No other editions are linked here.
Original file
Log in to download the original file
The download may take up to a minute.