ECM_22343519_v1_Aboricultural Impact Assessment · 132000.200173.1

                                                                                              Consult Arborist

                 8.3 E STABLISHING T REE P ROTECTION / V EG E XCLUSION F LAGGING
                 Figure 15 shows a typical representation of a tree protection system. Tree root systems are
                 generally shallow in nature with most of the roots found within the top 1m of soil and a higher
                 density of roots found closest to the surface where moisture and nutrients are more readily
                 available. The function of the TPZ is to ensure that the tree has a viable root system, so the
                 tree has a functional future as an amenity asset within the development.

                 The structural standing of a tree is linked to critical aspects of roots (found in the TPZ) to bind
                 the soil and create a mass that the tree can anchor to. These roots consist of ‘Secondary roots’
                 (medium size) and ‘Tertiary roots’ (small size).

                 Primary roots (large size) found in the SRZ connect the tree to the anchor system. Primary
                 roots by themselves do not bind enough soil to create a stable anchor system.

                 The shallow nature of tree roots should be taken into consideration when working close to
                 trees and when installing the tree protection fencing for the Tree Protection Zone.




                                       Figure 15: Example of an ideal generic Tree Protection System



                 8.4 TPZ S IGNS
                 The signs identifying the TPZ / ‘No-Go Zone’ are to be placed around the edge of the TPZ in
                 locations visible to the site as per Tree Protection Fencing Standards Australia marketing
                 media AS4970 – 2009.




                 23_02_22_AIA_Adapt_2 Arakoon_2                                                        Page 18 of 25
Document Set ID: 22343519
Version: 1, Version Date: 16/03/2023