Enmore Park Plan of Management - Land

URBAN FORESTRY AUSTRALIA - TREE MANAGEMENT & CONSULTING ARBORICULTURISTS*RV refers to the retention value of a tree, based on the tree’s Safe Useful Life Expectancy (SULE) and Landscape Significance.The RV is given as a subjective value as follows:Low (L) – The tree is dead, declining, and hazardous and has little or no amenity value.Medium (M) – Generally, the tree has a medium to high LSR and medium to short SULE.High (H) – Generally, the tree has a high LSR and medium to long term SULE, or the tree has a moderate to low LSR, no significant defects but a long term SULE.Note: Where further investigation or testing of trees is required, a retention value cannot be accorded to those trees until these investigations have taken place.*TPZ refers to the optimal tree protection zones for trees of ‘average to excellent vigour’. It is based on Matheny & Clark’s guidelines, as modified from the British Standards Institute 1991.Refer to Appendix A - Terms and Definitions for more detail.Note:o All figures refer to a radial offset in metres, measured from the centre of the tree’s trunk.o The optimal TPZ is calculated using the Matheny and Clark guidelines and converted to metric figures.o The minimum TPZ is calculated by using 10 times the tree DBH (excepting late-overmature of low vigour trees where the optimum TPZ only is to be used).o Trees of poor vigour are generally not considered for retention under this guideline.o Canopy spreads displayed on the survey are not accurately shown in many cases. Where a TPZ is displayed as a smaller diameter than the crown dripline, it is to be given that theTPZ is to be extended to the canopy dripline.o The minimum TPZ for a tree will not be less than 2 metres or greater than 15 metres.o Palms will have a TPZ of 1 metre outside the crown dripline.Arboricultural Audit and Assessment– Enmore Park, Marrickville. January, 2008 33 of 42