Response to Info Request - Attachment 8 - Arborist Report MCU18-0015 & RAL18-0001 · MCU18/0015

4. Conclusion
On the basis of the above information, discussion and findings, I summarize my conclusions
as follows:

With the current layout of the buildings, driveway and storm water, retention of the three Hoop
pines is viable. The storm water encroaches marginally into the TPZ (tree protection zone) of
Tree 1. The exact layout of the storm water line was not pegged when onsite hence not
knowing the exact intrusion amount into the TPZ.

Tree 2 has the stormwater near or on its SRZ (as per plans, exact layout line is unknown).

Tree 3 appears mainly unaffected by site works.

It should be noted that with clearing of surrounding vegetation the trees will be completely
exposed as well as a potential change in wind shear from surrounding buildings. The trees my
show signs of stress while adapting to the clearing of the surrounding vegetation. If further root
damage occurs then this will further add to the stress and affect their potential for retention.




5. Recommendations
Determine exact position of the storm water infrastructure in relation to the TPZ’s of trees 1
and 2

Remove upper compromised section of Tree 2 to mitigate risk of upper canopy failure.



Provide and implement Tree Protection measures in accordance with Australian Standard
4970 Protection of Trees on Development Sites 2009 (see section 6 Tree Management &
Protection Plan).




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Arborist report- TSA:IPS Attunga Lot 27 RP 89506
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