Aborist Report 20-10-23 Hoffman Rd (002)

Protection of trees to be retained:
To preserve the retained trees within this site tree exclusion zones must be determined. To
calculate these zones the formula has been used from the Australian Standard AS4970-2009
Protection of trees on development sites. This is the “Tree Protection Zone”.

Any encroachment, disturbance, or compaction of the soil within the Tree Protection Zone
can damage or destroy the fine absorbing roots. Injury caused by cutting, crushing,
suffocation, poisoning, or moisture stress by inundation or dehydration can result in damage
to a tree. The effects of some Injuries may not be apparent for some time.

The following guidelines are minimum standard I recommended for the preservation of these
trees. These guidelines should be incorporated in construction contracts, and the details made
available to all parties involved with work on the site, including equipment operators. Other
guidelines and protective measures may also be appropriate, in addition to those listed below.

     1. Protection Barrier: A suitable protection barrier is to be installed around the trees to
         be preserved. The barrier shall be constructed of durable fencing material, such as
         plastic construction fencing or chain-link fencing. The barrier shall be installed at
         the Tree Protection Zone perimeter. The fencing is to be maintained in good repair
         throughout the duration of the project, and should not be removed, relocated, or
         encroached upon without permission of the consulting arborist.
     2. Storage of Materials: There is to be no storage of materials or supplies of any kind
         within the area of the protection barriers. Concrete and cement materials, block,
         stone, sand and soil are not being placed within any Tree Protection Zones.
     3. Fuel Storage: Fuel storage will not be permitted within 30 meters of any tree to be
         preserved. Refueling, servicing and maintenance of equipment and machinery will
         not be permitted within 30 meters of protected tree.
     4. Debris and Waste Materials: Debris and waste from construction or other activities
         cannot be permitted within the Tree Protection Zones. Wash-down of concrete or
         cement handling equipment, in particular, will not be permitted within 30 meters of
         protected tree.
     5. Altered Site Hydrology: No changes in soil surface hydrology, any grade changes
         proposed that will impact on the Tree Protection Zones should be approved by the
         consulting Arborist before construction begins.
     6. Damages: All precautions should be taken to mitigate any potential injuries to the
        protected trees and any damages or injuries should be reported to the project arborist
        as soon as possible. Severed roots shall be pruned cleanly to healthy tissue, using
        sharp clean pruning tools. Broken branches or limbs are to be pruned in accordance
        with the Australian Standard AS4373-2007 Pruning of Amenity Trees.




Assessed by: David Hawthorne                                              Dip Arb AHC50510
Consulting Arborist AQF5                                                  Dip Hort/Arb RTF50203
                                                                          Dip Hort RTF50103
                                                                          MQAA / ISA QTRA
                                                                          AIH RH0150