Arboriculture Eastern Portal David Galwey Tree Dimensions
Arboriculture – Eastern Portal Corrections to EES • Tree EP217 represents ~50 Ailanthus trees • Tree EP218 represents ~40 Acacia trees • Therefore there are ~88 more trees than identified individually in the EES • In the EES I refer to “up to 218 trees” being impacted or removed • It is more accurate to state that up to 306 trees may be impacted or removed • These additional trees are self-sown and weedy in nature
Arboriculture – Eastern Portal South Yarra is a densely populated area within the City of Stonnington. Assumption: that all trees within the Eastern Portal precinct will require removal for construction. In fact, some trees may be able to be retained, depending on final design and construction methods. We assessed all trees within the precinct. What would be lost, individually and overall?
Arboriculture – Eastern Portal There are several distinct zones within the precinct. Osborne Street • Linear reserve along Osborne Street • • South Yarra Sidings Reserve • Rail corridors (Davis Avenue) •
Arboriculture – Eastern Portal Osborne Street • 18 trees Mostly Callery Pears • Mostly planted in the naturestrip • along west side of Osborne Street • Amenity, especially for residents along Osborne Street
Arboriculture – Eastern Portal Linear Reserve along Osborne Street • 46 trees Australian native plantings from • 1970s and more recently • Amenity along Osborne Street • Some mature trees have short ULEs and are hazardous
Arboriculture – Eastern Portal Linear Reserve along Osborne Street • 46 trees Australian native plantings from • 1970s and more recently • Amenity along Osborne Street • Some mature trees have short ULEs; some are hazardous
Arboriculture – Eastern Portal South Yarra Siding Reserve • 51 trees Mostly Australian native plantings • Ad hoc plantings: no particular • landscape theme and relatively low amenity value Two large trees of individual • significance toward northern end: Sugar Gum and Canary Islands Date Palm
Arboriculture – Eastern Portal South Yarra Siding Reserve • 51 trees Mostly Australian native plantings • Ad hoc plantings: no particular • landscape theme and relatively low amenity value Two large trees of individual • significance toward northern end: Sugar Gum and Canary Islands Date Palm
Arboriculture – Eastern Portal Rail corridors 191 trees • • Australian native plantings, Peppercorn trees, Elm and Robinia suckers, and Tree of Heaven ( Ailanthus altissima ) which is a declared noxious weed Providing tree canopy along rail • corridor
Arboriculture – Eastern Portal Davis Avenue Plane trees • Not being removed • • Tunnelling beneath and grout injection would not affect trees
Arboriculture – Eastern Portal Summary of trees Others Weedy self- (non-MLTV, MLTV 1 trees sown non-weedy) Total South Yarra Sidings public realm 36 0 15 51 Osborne St and linear reserve public realm 36 1 27 64 Rail corridors non-public realm 25 158 8 191 TOTAL 97 159 50 306 1 Medium and Long Term Viability tree
Arboriculture – Eastern Portal Summary of impacts Removal of trees across the Eastern Portal will result in temporary loss of amenity as well as the loss of ecosystem services. However new plantings could replace this and it would be possible to have no residual loss of either landscape quality or tree canopy cover within 20-30 years. Of course, this relies on the development of high-quality landscape plans that include significant tree planting. The project provides an opportunity to greatly improve the landscape amenity of South Yarra by planning and constructing a landscape that provides access to green space and tree canopy cover.
Arboriculture – Eastern Portal Summary of submissions Issue Submissions Response EPR Temporarily lift and store trees to be MM017 Not suitable for large evergreen trees. Not worth it for NA replanted following construction. small deciduous trees. Retain as many trees as possible. MM091, MM135, Vegetation removal will be minimised where possible. AR1 Minimise amenity loss that may result MM162, MM266, This will depend on construction requirements. Many from loss of open space. MM354 trees in the precinct have low value or short ULEs. Ensure water supply is available to trees; MM091 Supply irrigation for tree root zones, especially during AR2 integrate water harvesting and reuse. their establishment stage. Use WSUD principles where possible. Amend AR2 to include these requirements. Ensure replacement trees are planted. MM266, MM354 There is an opportunity to improve the overall landscape AR3 value of SY Sidings Reserve and Osborne Street, including tree canopy cover. Planting established trees will minimise time required for a mature landscape. Amenity and screening loss for residents MM266 Loss of screening and amenity will be minimised if AR1 along Osborne Street. possible depending on construction requirements. Prepare appropriate tree protection plan MM354 The need for tree protection plans has been identified AR3 to manage and mitigate adverse impacts. and recommended.
Arboriculture – Eastern Portal EPRs Minimise tree removals AR1: During detailed design, review potential tree impacts and provide for maximum tree retention where possible. Prior to construction of main works or shafts, develop and implement a plan in consultation with the relevant local council that identifies all trees in the project area which covers: • Trees to be removed or retained • Condition of the trees to be removed • Options for temporary re -location of palms and reinstatement at their former location or another suitable location.
Arboriculture – Eastern Portal EPRs Provide suitable conditions for establishing new trees AR2: Reinstate quality soils to sufficient volumes to support long-term viable growth of replacement trees. Suggested amendment: Ensure ongoing supply of water to tree root zones, especially during their establishment stage. Employ WSUD principles where possible.
Arboriculture – Eastern Portal EPRs Replant trees to maximise canopy cover AR3: Re-establish trees to replace loss of canopy cover and achieve canopy size equal to (or greater than) healthy, mature examples of the species in Melbourne. Consult with the City of Melbourne, the City of Port Phillip, the City of Stonnington, the Shrine of Remembrance and Shrine Trustees and Heritage Victoria as applicable. Policy documents that must be followed to re- establish trees and valued landscape character include: • The City of Melbourne’s Tree Retention and Removal Policy and Urban Forest Strategy • The City of Port Phillip’s Community Amenity Local Law No. 1 and Greening Port Phillip – An Urban Forest Approach • The City of Stonnington’s General Local Law 2008 (No 1) and City of Stonnington Street Tree Strategy • Any associated precinct plans • Specific policies of the Domain Parklands Conservation Management Plan (CMP), for trees within Domain Parklands • Shrine of Remembrance: Shrine of Remembrance CMP (Lovell Chen, 2010) or any future review and the Shrine of Remembrance Landscape Improvement Plan (rush Wright Associates, 2010) • South African Soldiers Memorial Reserve: Any relevant CMP for the South African Soldiers Memorial • Fawkner Park Conservation Analysis (Hassell, 2002) and the Fawkner Park Masterplan (City of Melbourne, 2005) • The preferred future character of the University of Melbourne, for trees in the grounds of the University of Melbourne.
Arboriculture – Eastern Portal EPRs Protect trees that are retained AR4: Prior to construction commencing of main works or shafts in affected areas, prepare and implement Tree Protection Plans for each precinct in accordance with AS4970-2009 Protection of Trees on Development Sites, addressing the detailed design and construction methodology of the project. Within precincts 1, 4 and 7 a Tree Protection Plan must be developed for each heritage place as relevant to the satisfaction of Heritage Victoria or the responsible authority.
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