Document ID: chunk:federal_register_of_legislation:F2022L00620:body:0:p78
Version: federal_register_of_legislation:F2022L00620
Segment Type: other
Provision Reference: 
Character Range: 212997–215958

arborist with documented experience in assessing and maintaining heritage-significant exotic trees.
While arboricultural works should be undertaken in general conformance with the appropriate Australian Standard, pruning of heritage significant trees is to be conservative in ambition except where required for the protection of public safety or to address other emergency conditions.  Excessive thinning and weight reduction is to be avoided, and these types of actions are only to be undertaken with respect to heritage significant trees based on sound arboricultural advice and planning.
However, pruning of new and replacement trees should be undertaken during establishment and as required thereafter to optimise structural form and aesthetic quality and to correctly integrate new trees into the established canopy.
Aging trees frequently enter a period of deterioration (known as senescence) prior to death, during which structural issues with the tree may multiply to the extent that the tree becomes hazardous to an extent that cannot be mitigated by arboricultural works.  Where retention of a given tree is assessed as no longer feasible, the tree should be removed in its entirety and appropriate replacement trees should be established within the existing structure of the planting scheme.  As far as possible, trees should be replaced with the same species and in comparable position, with reference to both existing conditions and the 1928 planting plan.  Where variation is required, it should be sympathetic to the original planting intent.
A mixed plantation of exotic tree specimens, generally comprised of group plantings in linear rows and perimetric rings, should be maintained to the north and west of West Block, defining the borders and formal landscape arrangements of the place.  Rows and groupings should be arranged using monocultural or alternating species plantings, as appropriate to the intention and established in the 1928 plan of permanent plantings.
The plantation should continue to be comprised of species nominated in the 1928 plan, except where these species are not feasibly employed for reasons of commercial availability, climate suitability or because they are now considered noxious or environmental weeds in the ACT. All new and replacement plantings should be managed as appropriate to ensure successful establishment.  Where it is not feasible for the above reasons to replace an existing tree with the original species when required (i.e. Giant Redwood), an alternate species should be selected which is sympathetic to the original form and design intent of the 1928 planting and responsive to current conditions.
Native plantings should be maintained to the east and south-east of West Block, consistent with the original treatment of Camp Hill.  As noted at Policy 9, the existing native trees to the south-east of West Block are not of individual significance and can be contemplated for removal if required.