Approved Document OPW18-0319 · OPW18/0319

                                                                                     Consult Arborist

5.3       TREE 3 – BRUSH BOX
 ID          Genus & Species                        Common Name
 3           Lophostemon confertus                  Brush Box
 Height                    Crown Spread             [email protected]          Age
 12-14m                    4-5m                     200-250mm                Early-mature
 Health                                             Structure
 Good – Fair average vigour                         Fair - Asymmetrical canopy
 Target                            Occupancy                        Target Zone
 Residential dwelling              Constant                         Within 1 x height & Dripline
 Comments
 Tree 3 is located within 2m of the adjacent Unit with a predominant phototrophic lean towards and
 over the roof.

 It is likely that it was retained as a young tree after the main site clearing. A fence has been
 positioned next to the tree's lower trunk and, as it has increased in diameter contact is now starting
 to occur.

 No evidence was found to indicate ground or root plate movement on the tension side.

 With no protection beneath the tree and the canopy protruding beyond the forest edge there is a
 likelihood that this tree is over-exposed to wind loading that will increase as the canopy develops in
 size and spread.

 The risk matrix has been calculated on total tree failure.
 Likelihood of Failure           Likelihood of Impacting Target          Matrix 1 - Result
 Improbable                      High                                    Unlikely
 Consequence of Failure          Matrix 2 – Overall Risk Rating          Work Priority
 Significant                     Low                                     Proactive maintenance within
                                                                         6-12 months
 Recommendations
 Although the tree appears in a suitable condition for retention its location directly adjacent to, and
 directly targeting a Unit is not.

 Tree 3 is not deemed as a High-risk tree at this time but its suitability for long-term retention beyond
 2-3 years is untenable as the encroachment over the adjacent dwelling increases.

      •     Proactive removal within 6-12 months, prior to an increase risk rating due to encroachment
            and size increase.

 Residual Risk on completion of Mitigation Options
 NA




19_01_24_TRA_RACV Resort _Noosa_V3                                                          Page 11 of 32