Attachment 3 - Koala Impact Assesssment

Table 1. Tree retention under the current proposal (from Consult Arborist).


 Tree Value                                Remove              Retain           % Retain
 High Retention Value                        29                 175                86
 Medium Retention Value                      46                  92                55
 Low Retention Value                         24                  9                 28
 Total                                       99                 276                74
 Tree Species
 Eucalypts                                    20                 127                86
 Paperbark                                    29                  66                31
 Other                                        50                  83                58
 Total Trees Recorded                         99                276



Impacts and their mitigation


A complete tree survey of the whole site was conducted in March 2022,
individually identifying and describing 375 trees. Of these, 135 were identified
as Eucalyptus robusta, and four as E. tereticornis – key food species for koalas
at this location. Importantly, the tree survey also inspected each tree for
maturity, form, and health, noting the presence of invasive weeds and decaying
limbs.


Previous proposals that were considered for this site envisaged a significant
proportion of the extant trees be removed; as part of the actions to mitigate and
avoid impacts, the present proposal foreshadows (subject to detailed design –
see Table 1) the removal of approximately twenty E. robusta, i.e. the retention
of most of the available fodder species on site. This is an appropriate effort
retain as much habitat, and to do so as part of a strategic approach - retaining
spatially strategic trees to retain connectivity rather than simply retaining trees
where convenient.


Importantly, the status of the trees on site was carefully examined during the
tree survey, and significant health concerns were identified for many of them. A
key problem facing this site is the infestation of weeds, particularly climbing
                                                                                           10

                     Lot 3 on SP 126203 Report prepared for Aspect Architects June 2022