Approved Document OPW18-0319 · OPW18/0319

                                                                                     Consult Arborist

5.5       TREE 5 – SWAMP MAHOGANY
 ID          Genus & Species                          Common Name
 5           Eucalyptus robusta                       Swamp Mahogany
 Height                   Crown Spread                [email protected]         Age
 6-8m                     4-5m                        200-300mm               Early-mature
 Health                                               Structure
 Fair with reduced vigour                             Poor - excessive lean
 Target                         Occupancy                             Target Zone
 Residential dwelling           Constant                              Within 1 x height & Dripline
 Comments

 An edge tree growing at an excessive angle with a developing canopy and end-weight loading.
 There is evidence of past pruning and responsive regrowth.

 The tree is targeting the outdoor entrainment area and entrance way of the Unit beneath it.

 The risk matrix has been calculated on total tree failure.

 Likelihood of Failure              Likelihood of Impacting Target       Matrix 1 - Result
 Possible                           High                                 Somewhat Likely
 Consequence of Failure             Matrix 2 – Overall Risk Rating       Work Priority
 Minor                              Low                                  Proactive maintenance within
                                                                         6-12 months
 Recommendations

 Tree 5 is not deemed as a High-risk tree at this time but its suitability for long-term retention beyond
 2-3 years is questionable as the encroachment over the adjacent dwelling increases.

 There is limited opportunity for suitable pruning.

      •     Proactive removal within 6-12 months, prior to an increase risk rating due to encroachment
            and excessive end-weight leading to failure.

 Residual Risk on completion of Mitigation Options
 NA




19_01_24_TRA_RACV Resort _Noosa_V3                                                          Page 14 of 32