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Trees and development
The following criteria should be addressed in a report by an experienced qualified arborist:
- Accurately survey, identify and evaluate all the trees greater than two metres high existing on the site and on adjoining properties that may be impacted by the development.
- Accurately survey, identify and evaluate all nature strip trees.
Identify every tree greater than two metres high on the site plan with a number.
Relevant information on all trees related to tree species, height, canopy spread, trunk calliper (at 1.5 metres above existing ground level), health, condition, form, structure and local landscape significance of all trees identified on the site plan.
- Identify the trees suitable for preservation, based on considerations such as:
- tolerance to construction impacts and current tree condition;
- tree protection zone specifications for tree protection fencing, root pruning, mulching and tree watering requirements;
- identify optimal tree preservation distances to restrict tree damage of the tree/s to be retained, including nature strip trees and trees on adjoining properties. Methany & Clark, Coder or British Standards methodologies should be used.
- Review all plans for potential impact on trees.
- Provide recommendations regarding footing and driveway construction methods sympathetic to tree root systems. Consideration should be given to alternative footing systems such as: pier and beam, bored piles or screw piers and/or cantilevered or waffle slab construction.
- Provide recommendations and strategies for long-term tree preservation.
- Proposed utility service locations (e.g. gas, electricity, telecommunications, water, stormwater and sewerage) and how these services are to be installed having regard to tree protection zones on site.
- Alternative hard surface paving methods to reduce tree root damage.
- Throughout the construction phase, determine the timing to inspect and assess any impact on the trees to be retained by a qualified experienced arborist.
- Council's Planning Investigations Arborists review all arborist reports.
17-Apr-2009
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