John Atkins
Consulting Arborist
11 Blandford Street
Fennell Bay NSW 2283
PH: 02 4959 9411
MOB: 0407 019 076
Fax: 02 4959 8875
treeology@westnet.com.au
ABN 7610 7678 704
Arborists Report
For
Site Address
Ref No:
Date:
Site address
1.
Contents
Arborists Report ......................................................................................................... 1
Site Details .............................................................................................................. 3
1.1. Site location: ................................................................................................ 3
1.2. Site Description ........................................................................................... 3
1.3. Site Inspection Details ................................................................................. 4
2. Recommendations ................................................................................................ 10
Appendix 1 .................................................................................................................. 12
2.
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2. Site Details
2.1.
Site location:
Fig 1. Sketch plan of the site showing the location of the trees referred to in this report.
2.2.
Site Description
The site is a residential property with a relatively large rear yard. A
stormwater drainage channel exists adjacent to the Northern boundary and
the site has a low elevation.
The resident has a number of trees growing in the northern end of the
property.
The trees on site were affected by the June storm event of 2007, with one tree
destabilised but still present.
It is the desire of the owner of the property to remove a large Camphor laurel
tree (Tree1) because of the environmental problems it causes as a weed
species and to improve the amenity of the area by its removal. The owner has
a strong desire to replant with Australian native species and some will be
listed as recommendations of this report.
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2.3.
Site Inspection Details
Tree No
Botanic Name
Common Name
Age
DBH
Height
Spread
North
East
South
West
Structure
Health
SULE (see appendix 1)
1
Cinnamonum camphora
Camphor Laurel
Mature
114 cm
12 metres
Recommendation
Removal and replacement
10 metres
7 metres
6 metres
8 metres
Poor
Good
3C - Trees that may live for more than 15 years but
should be removed to prevent interference with more
suitable individuals or to provide space for new tree
planting
Description of condition
Basal damage at the root crown and minor decay is present.
Heavy lopping of the tree has already been undertaken and the tree now has
a highly asymmetrical form
The tree’s roots and canopy cause some minor interference with adjacent
structures and this is highly likely to occur.
The canopy of the tree extends beyond the northern border of the property
into public open space and there are numerous seedlings growing. The tree
itself may have been self sown. Because of the tendency of the species to
become a chronic urban and environmental weed it should be removed.
Although the tree has a large trunk diameter and therefore falls into the
category of a more significant tree. The position of the tree greatly reduces its
visual significance as it is not prominent in the public view. Regardless of its
age significance, the tree now has very poor structure and is likely to produce
large amounts of poorly attached epicormic regrowth as a result of lopping. It
is recommended for removal and replacement.
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Figure 2 shows the base of Tree 1, the zone of mechanically damaged tissue in the base and
root crown is highlighted by the red oval.
Tree No
Botanic Name
Common Name
Age
DBH
Height
Spread
North
East
South
West
Structure
Health
Recommendation
2
Eucalyptus nicholii
Narrow Leaved Black Peppermint
Mature
63 cm
7 metres
5 metres
4 metres
2 metres
4 metres
Poor
Poor
Removal and replacement elsewhere on
property.
Description of condition
The canopy of the tree is very sparse with most of the foliage now dead. The
tree has been in a gradual state of decline for several years as stated by the
owner and neighbour. The cause of its decline is not known.
The tree has a zone of severe basal damage, that would appear to be due to
either the failure of another large branch or trunk, or due to severe mechanical
damage.
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Due to the poor vigour of the tree and the basal damage, the tree is
recommended for removal and replacement.
Figure 3 shows the view of Tree 2 looking
north east. The sparsity of foliage throughout the canopy can clearly be seen.
Figure 4 shows Tree 2 with the large wound present at the base of the trunk and into the root
crown. The tree has a 5 – 10 degree lean over the fence from the direction of root damage.
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Tree No
Botanic Name
Common Name
Age
DBH
Height
Spread
North
East
South
West
Structure
Health
Recommendation
3
Eucalyptus pilularis
Blackbutt
Semi mature
47 cm
13 metres
6 metres
3 metres
0 metres
3 metres
Poor
Good
Removal and replacement elsewhere
Description of condition
Tree 3 suffered root plate failure in the June long weekend storm. The root
plate now lies partially rotated out of the soil with a small root plate radius that
is currently insufficient to maintain structural stability. The owner has reduced
some of the branch weight to reduce risk of failure. Epicormic shoots have
already sprouted and will continue to grow adding further weight to the
canopy.
The tree should be immediately removed. Replacement elsewhere on the site
is recommended.
Figure 5 shows the root plate of tree 3 with major roots broken and the root plate partially
rotated.
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Tree No
Botanic Name
Common Name
Age
DBH
Height
Spread
North
East
South
West
Structure
Health
Recommendation
4
Eucalyptus botryoides
Bangalay
Mature
54 cm
10 metres
7 metres
6 metres
7 metres
6 metres
Good
Good
Pruning of lower lateral scaffold branches over
adjacent street tree to the south and branches
over residences.
Description of condition
The tree has a low broad form, consistent with other trees in the street. The
lowest lateral branches have grown over the residence and the neighbouring
residence. The roof of the neighbouring residence is made of asbestos
cement tiles and the sweep of the branches when wet would likely be causing
abrasion. It is possible that further damage may occur to this residence. In
addition the branches drape down particularly when wet on the residence at
number 10. Lateral branches to the south suppress a Callistemon salignus
street tree.
Figure 6 showing the low lateral branches over the roofs of No 10 (left) and No 8 (right)
Young St.
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Figure 7 showing the lateral branches on the southern side of Tree 4 and the red lines
indicate the point of proposed pruning to reduce suppression of the street tree.
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2. Recommendations
2.1. Trees 1, 2 and 3 should be removed and the stumps ground to a
depth of 300 mm below the surface.
2.2. Tree 4 shall undergo crown lifting pruning as per Figures 6 & 7 above
2.3. Replacement plantings are strongly recommended and this is in
accord with the owner’s preferences. Currently, there are several
species of Eucalyptus planted that will eventually become very large
and may present risks ad hazards in the future. It is recommended that
a selection from the list below are selected a native trees that will not
be too large eventually, but are suited to the soil type, elevation and
site size.
Common Name
5 veined Paperbark
Willow Leaved Bottlebrush
Eleocarpus reticulatus
Glochidion ferdinandii
Toona australis
Alphitonia excelsa
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Botanic Name
Melaleuca quinquenervia
Callistemon salignus
Blueberry Ash
Cheese Tree
Red Cedar
Red Ash
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This report has been prepared by John Atkins on 21 December 2007.
Contact details
11 Blandford Street
Fennell Bay NSW 2283
Ph:
Mob: 0407 019 076
Qualifications
1.
Cert. Horticulture (1987)
2.
Cert. Tree Surgery (1987)
3.
Assoc. Diploma of Applied
Science (Landscape) 1994
4.
International Society of
Arboriculture Certified Arborist
(2004)
5.
AQF 5 Diploma of Arboriculture
(2011)
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Appendix 1
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