Modification History
Not Applicable
Unit Descriptor
Unit descriptor |
This unit covers the process of assessing trees to make recommendations on tree health and condition and defines the standard required to consult with clients and provide a service to assess the health of trees; inspect and assess trees for general condition and diseases; diagnose and determine treatment protocols; record assessment data; assess trees for identification of defects and assess risk of harm; document data and recommendations in an assessment report; and maintain assessment data records. |
Application of the Unit
Application of the unit |
This unit applies to the job role of a consulting arborist in the provision of professional services in evaluation of tree pathology and structural tree problems in a wide range of amenity trees and sites in urban and regional settings and to the production of professional documentation to inform and advise a client. |
Licensing/Regulatory Information
Not Applicable
Pre-Requisites
Prerequisite units |
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Employability Skills Information
Employability skills |
This unit contains employability skills. |
Elements and Performance Criteria Pre-Content
Not Applicable
Elements and Performance Criteria
ELEMENT |
PERFORMANCE CRITERIA |
1. Determine tree survey program requirements |
1.1. Scope of survey is identified in line with client needs and statutory requirements. 1.2. All current data research relevant to survey requirements is identified, sourced and recorded. 1.3. Processes for data capture are documented. 1.4. Methods of recording assessment data are prepared. 1.5. Equipment for tree assessment is checked and prepared for use. |
2. Inspect and assess trees |
2.1. Trees are assessed to determine their identification, location, health, growth habit, structure and stability. 2.2. Consideration is given to the tree's age, condition, habitats, wind loading, distribution of foliage, wound size and potential impacts of proposed recommendations. 2.3. Tree locations are identified from a plan according to the size and extent of the project and according to common industry practice. 2.4. Testing equipment is used, where required, to determine age, decay, disease and scope of tree problems. 2.5. Individual trees are assessed and, where required, their value calculated and recorded. 2.6. Observed indications of disease are diagnosed and results recorded. |
3. Assess risk of harm |
3.1. Trees are assessed to determine their identification of defects. 3.2. Trees are assessed to determine their risk potential and suitable controls are recommended to the client or organisation. 3.3. Hazardous trees are assessed to determine their risk of harm. 3.4. Risk controls are documented and recommended to the client or organisation. |
4. Compile a tree assessment report |
4.1. Diagnosis of any tree problem relevant to the scope of survey is documented. 4.2. Specific recommendations of remedial action for tree problems are provided and recorded. 4.3. Identification of hazardous trees, recommendations for appropriate remedial actions and appropriate risk controls are recommended and documented, and applied. 4.4. Tree assessment report incorporates all relevant data from the survey in line with client needs. 4.5. Survey and assessment data are stored and maintained as part of professional practice. 4.6. Client is informed and advised of the content and implications of the report and a copy is presented. |
Required Skills and Knowledge
REQUIRED SKILLS AND KNOWLEDGE |
This section describes the skills and knowledge required for this unit. |
Required skills |
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Required knowledge |
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Evidence Guide
EVIDENCE GUIDE |
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The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package. |
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Overview of assessment |
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Critical aspects for assessment and evidence required to demonstrate competency in this unit |
The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy holistically all of the requirements of the performance criteria and required skills and knowledge and include achievement of the following:
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Context of and specific resources for assessment |
Competency requires the application of work practices under work conditions. Selection and use of resources for some worksites may differ due to the regional or enterprise circumstances. |
Range Statement
RANGE STATEMENT |
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The range statement relates to the unit of competency as a whole. |
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Trees may include: |
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Assessment may include: |
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Assessment reports may include: |
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Unit Sector(s)
Unit sector |
Arboriculture |
Co-requisite units
Co-requisite units |
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Competency field
Competency field |