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Evidence Guide: AHCARB403 - Perform a ground-based tree defect evaluation

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

AHCARB403 - Perform a ground-based tree defect evaluation

What evidence can you provide to prove your understanding of each of the following citeria?

Determine evaluation requirements

  1. Confirm trees to be evaluated in accordance with client brief
  2. Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk
  3. Determine targets that need to be considered
  4. Determine tree hazard benchmarks appropriate for project
  5. Record and implement work health, safety, site, environmental and traffic control measures
Confirm trees to be evaluated in accordance with client brief

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine targets that need to be considered

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine tree hazard benchmarks appropriate for project

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record and implement work health, safety, site, environmental and traffic control measures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Examine visual tree indicators

  1. Inspect tree from ground
  2. Determine tree health
  3. Examine tree anatomy and morphology for past failures
  4. Examine tree for outwardly apparent defects
  5. Examine tree for visual indicators of concealed defects
  6. Examine tree for visual indicators of disease leading to structural failure
  7. Examine tree for visual indicators of organisms causing damage leading to structural failure
  8. Determine if failure is likely to result in target being impacted
Inspect tree from ground

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine tree health

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Examine tree anatomy and morphology for past failures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Examine tree for outwardly apparent defects

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Examine tree for visual indicators of concealed defects

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Examine tree for visual indicators of disease leading to structural failure

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Examine tree for visual indicators of organisms causing damage leading to structural failure

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine if failure is likely to result in target being impacted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Undertake basic testing

  1. Sound for cavities suggested by openings and visual indicators
  2. Probe any accessible cavities and openings
  3. Expose root crown where required
  4. Remove loose bark where appropriate
  5. Determine whether tree or tree parts are a hazard in accordance with benchmarks
Sound for cavities suggested by openings and visual indicators

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Probe any accessible cavities and openings

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Expose root crown where required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Remove loose bark where appropriate

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine whether tree or tree parts are a hazard in accordance with benchmarks

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record tree attribute and indicators

  1. Photograph and record tree species and site of tree
  2. Record the health and approximate dimensions of the tree
  3. Record and photograph the defects and visual indicators
  4. Describe, illustrate and indicate on image or device, the approximate location on the tree
  5. Record approximate dimensions of affected tree part and defect
  6. Record results of evaluation
Photograph and record tree species and site of tree

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record the health and approximate dimensions of the tree

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record and photograph the defects and visual indicators

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Describe, illustrate and indicate on image or device, the approximate location on the tree

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record approximate dimensions of affected tree part and defect

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record results of evaluation

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Mitigate risk and document actions

  1. Advise client immediately of evaluation, where a tree poses an imminent threat
  2. Take action as instructed in accordance with work place policies and client brief
  3. Isolate the tree or move target as instructed in accordance with work place policies and client brief
  4. Document immediate actions taken
Advise client immediately of evaluation, where a tree poses an imminent threat

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Take action as instructed in accordance with work place policies and client brief

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Isolate the tree or move target as instructed in accordance with work place policies and client brief

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document immediate actions taken

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document and report hazards and recommendations

  1. Compile hazard evaluation documentation
  2. Recommend further action of including aerial inspection and load testing or seek further advice from a consulting arborist
  3. Determine and document any tree work required to mitigate risks
  4. Submit tree hazard evaluation report to client or employer
Compile hazard evaluation documentation

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Recommend further action of including aerial inspection and load testing or seek further advice from a consulting arborist

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine and document any tree work required to mitigate risks

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Submit tree hazard evaluation report to client or employer

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Determine evaluation requirements

1.1 Confirm trees to be evaluated in accordance with client brief

1.2 Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk

1.3 Determine targets that need to be considered

1.4 Determine tree hazard benchmarks appropriate for project

1.5 Record and implement work health, safety, site, environmental and traffic control measures

2. Examine visual tree indicators

2.1 Inspect tree from ground

2.2 Determine tree health

2.3 Examine tree anatomy and morphology for past failures

2.4 Examine tree for outwardly apparent defects

2.5 Examine tree for visual indicators of concealed defects

2.6 Examine tree for visual indicators of disease leading to structural failure

2.7 Examine tree for visual indicators of organisms causing damage leading to structural failure

2.8 Determine if failure is likely to result in target being impacted

3. Undertake basic testing

3.1 Sound for cavities suggested by openings and visual indicators

3.2 Probe any accessible cavities and openings

3.3 Expose root crown where required

3.4 Remove loose bark where appropriate

3.5 Determine whether tree or tree parts are a hazard in accordance with benchmarks

4. Record tree attribute and indicators

4.1 Photograph and record tree species and site of tree

4.2 Record the health and approximate dimensions of the tree

4.3 Record and photograph the defects and visual indicators

4.4 Describe, illustrate and indicate on image or device, the approximate location on the tree

4.5 Record approximate dimensions of affected tree part and defect

4.6 Record results of evaluation

5. Mitigate risk and document actions

5.1 Advise client immediately of evaluation, where a tree poses an imminent threat

5.2 Take action as instructed in accordance with work place policies and client brief

5.3 Isolate the tree or move target as instructed in accordance with work place policies and client brief

5.4 Document immediate actions taken

6. Document and report hazards and recommendations

6.1 Compile hazard evaluation documentation

6.2 Recommend further action of including aerial inspection and load testing or seek further advice from a consulting arborist

6.3 Determine and document any tree work required to mitigate risks

6.4 Submit tree hazard evaluation report to client or employer

Required Skills and Knowledge

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Determine evaluation requirements

1.1 Confirm trees to be evaluated in accordance with client brief

1.2 Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk

1.3 Determine targets that need to be considered

1.4 Determine tree hazard benchmarks appropriate for project

1.5 Record and implement work health, safety, site, environmental and traffic control measures

2. Examine visual tree indicators

2.1 Inspect tree from ground

2.2 Determine tree health

2.3 Examine tree anatomy and morphology for past failures

2.4 Examine tree for outwardly apparent defects

2.5 Examine tree for visual indicators of concealed defects

2.6 Examine tree for visual indicators of disease leading to structural failure

2.7 Examine tree for visual indicators of organisms causing damage leading to structural failure

2.8 Determine if failure is likely to result in target being impacted

3. Undertake basic testing

3.1 Sound for cavities suggested by openings and visual indicators

3.2 Probe any accessible cavities and openings

3.3 Expose root crown where required

3.4 Remove loose bark where appropriate

3.5 Determine whether tree or tree parts are a hazard in accordance with benchmarks

4. Record tree attribute and indicators

4.1 Photograph and record tree species and site of tree

4.2 Record the health and approximate dimensions of the tree

4.3 Record and photograph the defects and visual indicators

4.4 Describe, illustrate and indicate on image or device, the approximate location on the tree

4.5 Record approximate dimensions of affected tree part and defect

4.6 Record results of evaluation

5. Mitigate risk and document actions

5.1 Advise client immediately of evaluation, where a tree poses an imminent threat

5.2 Take action as instructed in accordance with work place policies and client brief

5.3 Isolate the tree or move target as instructed in accordance with work place policies and client brief

5.4 Document immediate actions taken

6. Document and report hazards and recommendations

6.1 Compile hazard evaluation documentation

6.2 Recommend further action of including aerial inspection and load testing or seek further advice from a consulting arborist

6.3 Determine and document any tree work required to mitigate risks

6.4 Submit tree hazard evaluation report to client or employer

The candidate must be assessed on their ability to integrate and apply the performance requirements of this unit in a workplace setting. Performance must be demonstrated consistently over time and in a suitable range of contexts.

The candidate must provide evidence for and demonstrate:

confirming trees to be evaluated in accordance with client brief

undertaking a site-specific risk assessment by identifying work health and safety hazards and assessing risk

determining targets that need to be considered

determining tree hazard benchmarks appropriate for project

recording and implementing work health, safety, site, environmental and traffic control measures

inspecting tree from ground

determining tree health

examining tree for past failures

examining tree for visual indicators of outwardly apparent defects

examining tree for visual indicators of concealed defects

examining tree for visual indicators of disease leading to structural failure

determining if failure is likely to result in target being impacted

sounding for cavities suggested by openings and visual indicators

probing any accessible cavities and openings

exposing root crown where required

removing loose bark where appropriate

determining if tree exceeds tree hazard benchmarks for project

photographing and recording tree species and site of tree

recording health and approximate dimensions of the tree

recording and photographing defects and visual indicators

describing, illustrating and indicating on image or device, the approximate location on the tree

recording approximate dimensions of affected tree part and defect

recording results and advising client of evaluation

advising client immediately of evaluation where a tree poses an imminent threat

taking action as instructed in accordance with work place policies and client brief

isolating the tree or move target as instructed in accordance with work place policies and client brief

documenting immediate actions taken.

compiling hazard evaluation documentation

recommending further action of aerial inspection and load testing or seek further advice from a consulting arborist

determining and documenting any tree work required to mitigate risks

submitting tree hazard evaluation report to client or employer

use of industry standard terminology to describe hazard evaluation.

The candidate must demonstrate knowledge of:

client briefs

site-specific risk assessment

work health and safety hazards and assessing risk

targets and the role of targets in tree risk assessment

tree hazard benchmarks

work health, safety, site, environmental and traffic control measures

tree inspections

tree health

methods of determining tree health

tree anatomy and morphology for past failures

tree examinations for outwardly apparent defects

tree examinations for visual indicators of concealed defects

tree examinations for visual indicators of disease leading to structural failure

tree examinations for visual indicators of organisms causing damage leading to structural failure

likelihood of target impaction

cavity sounding and probing techniques

visual indicators of root crowns and bark

determination whether tree or tree parts are a hazard in accordance with benchmarks

photography and recording of tree species, site of tree, approximate location of trees, and defects and visual indicators

health and approximate dimensions of the tree and affected tree part and defect

imminent threat

tree isolation methods

methods of moving targets

documentation of hazard evaluation

risk mitigation

recommendations of aerial inspection and load testing

advice from a consulting arborist

presentation of reports.

Range Statement