Arborist Inspect 3 Werin St Tewantin

                                             ARBORIST INSPECTION 3 WERIN ST TEWANTIN


High:                        Prominent or valued tree with high amenity and low risk.

                             (Trees on neighbouring properties are assigned a 'High' retention value and should be protected regardless of amenity value)

RISK                         The combination of the likelihood of an event and the severity of the potential consequences.

STRUCTURAL ROOT ZONE (SRZ)   The area around the base of a tree required for the tree’s stability in the ground. The woody root growth and soil cohesion in this
                             area are necessary to hold the tree upright. The SRZ is nominally circular with the trunk at its centre and is expressed by its radius in
                             metres. This zone considers a tree’s structural stability only, this is different from the root zone required for a tree’s vigour and long-
                             term viability, which will usually be a much larger area (see TPZ).

STRUCTURE                    Reference to the structural integrity of the tree with consideration of the crown, trunk and roots. Determined using the Visual Tree
                             Assessment (VTA) method (Matheck and Breloer 1994). The failure of small (<60mm calliper) live or dead limbs is normal and not
                             considered here.

Very poor:                   Clear indications that a significant failure is likely soon

Poor:                        Signs of structural weakness obvious and failure likely, one might expect a significant failure event within the next 5 years, possibly
                             tomorrow

Fair:                        Signs of weakness present though not obviously significant, likely to become worse over time

Good:                        No obvious signs of structural weakness

TREE NUMBER                  Identifying number allocated to individual trees or groups of trees, used to locate trees using site plans or tags on trees.

TREE PROTECTION ZONE (TPZ)   An exclusion / protection area measured at ground level nominally circular with the trunk at its centre, expressed by its radius in
                             metres.
                             The TPZ allows for protection of canopy and roots; both the structural roots that give the tree stability and the smaller absorption
                             roots. The radius of the TPZ is normally calculated for each tree by multiplying the DBH × 12. The minimum distance will be 2m and
                             maximum 15 as stipulated in the Australian Standard 4970-2009 – Protection of trees on development sites.

REFERENCE                    Unique identifier assigned to an individual report by the Author

ULE                          Useful Life Expectancy is an estimation of how many years a tree can reasonably be retained in the landscape provided growing
                             conditions do not significantly worsen and any recommended works are completed. It takes into consideration factors such as risk,
                             species, age, health and site conditions.