Reference Documents - 5 School Street, Pomona - MCU24/0165 & OPW24/0222

                 1. INTRODUCTION

                 This report has been prepared to assess the impact of the proposed development on existing
                 trees within and adjoining the property. The assessment follows the legislative requirements
                 outlined in Australian Standard AS 4970-2009 – Protection of trees on development sites.
                 Recommendations are provided to ensure compliance with best Arboricultural practices and
                 to mitigate potential impacts on retained trees.

                 2. METHODS AND PROCEDURES

                     •    Visual inspection of all trees from ground level, assessing health, structure, and
                          potential risk factors.
                     •    Non-invasive root zone investigation where necessary, to determine root plate extent
                          and soil profile conditions.
                     •    Referencing AS 4970-2009 and AS 4373-2007 (Pruning of amenity trees) in all tree
                          management recommendations.
                     •    Utilising the International Society of Arboriculture (ISA) Tree Risk Assessment
                          Manual to assess tree risk factors.
                     •    Weather conditions during inspection: fine, low wind and a warm temperature
                     •    Tree positions plotted on the site plan are approximate, and TPZs and SRZs must
                          be set out on-site based on provided dimensions.

                 3. SUMMARY

                     •    The site at Pomona is currently a residential allotment. At the rear and adjacent to the
                          property, there is a community of trees that may be impacted by the proposed
                          development.
                     •    The dominant species within this tree community is Cinnamomum camphora
                          (Camphor Laurel), a declared environmental/invasive weed species in Queensland.
                     •    The area is studded with mature Eucalyptus grandis (Flooded Gum) trees, which
                          form the upper canopy. The protection provided by these trees has facilitated the
                          spread of Camphor Laurel.
                     •    The focus of this report is on these mature native trees, as the Tree Protection Zones
                          (TPZs) of the Eucalyptus grandis encumber the TPZs of the smaller trees and the
                          Camphor Laurel.
                     •    Historical disturbance of the soil profile is evident. However, the mature Eucalyptus
                          species do not appear to have been negatively affected or may have established post-
                          disturbance.
                     •    A young strangler fig (Ficus obliqua), supported by a dead host tree within the
                          property boundary, is unsuitable for retention due to its aggressive root system,
                          which poses risks of structural damage and moisture migration.

                 4. TREE PROTECTION MEASURES

                     •    TPZs for retained trees must be clearly demarcated with fencing in accordance with
                          AS 4970-2009 (Protection of Trees on Development Sites) and AS 4687-2007
                          (Temporary Fencing and Hoardings).




Document Set ID: 23679128
Version: 1, Version Date: 08/04/2025