Arborists Report
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John Atkins Consulting Arborist 11 Blandford Street Fennell Bay NSW 2283 PH: 02 4959 9411 MOB: 0407 019 076 Fax: 02 4959 8875 [email protected] ABN 7610 7678 704
Arborists Report For
Site Address
Ref No: Date: Site address
1.
Contents Arborists Report...... 1 2. 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
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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 1 Botanic Name Cinnamonum camphora Common Name Camphor Laurel Age Mature DBH 114 cm Height 12 metres Spread North 10 metres East 7 metres South 6 metres West 8 metres Structure Poor Health Good SULE (see appendix 1) 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 Recommendation Removal and replacement
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 2 Botanic Name Eucalyptus nicholii Common Name Narrow Leaved Black Peppermint Age Mature DBH 63 cm Height 7 metres Spread North 5 metres East 4 metres South 2 metres West 4 metres Structure Poor Health Poor Recommendation 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 3 Botanic Name Eucalyptus pilularis Common Name Blackbutt Age Semi mature DBH 47 cm Height 13 metres Spread North 6 metres East 3 metres South 0 metres West 3 metres Structure Poor Health Good Recommendation 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 4 Botanic Name Eucalyptus botryoides Common Name Bangalay Age Mature DBH 54 cm Height 10 metres Spread North 7 metres East 6 metres South 7 metres West 6 metres Structure Good Health Good Recommendation 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 Botanic Name 5 veined Paperbark Melaleuca quinquenervia Willow Leaved Bottlebrush Callistemon salignus Eleocarpus reticulatus Blueberry Ash Glochidion ferdinandii Cheese Tree Toona australis Red Cedar Alphitonia excelsa Red Ash
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This report has been prepared by John Atkins on 21 December 2007.
Contact details Qualifications
11 Blandford Street 1. Cert. Fennell Bay NSW 2283 Horticulture (1987) Ph: Mob: 0407 019 076 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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