BMP - Tree Risk Assessment - 3

Table P1. Guidance on the intended roles of the tree risk manager, tree risk assessor,
and the arborist. In addition, legal counsel can provide advice on duty of care, professional responsibilities, negligence, title and boundary matters, and other issues.
All recommendations should be made in accordance with industry standards and
regulations.
(tree owner, property manager,
controlling authority)

Tree Risk Manager

(unless regulated by controlling
authorities)

Tree Risk Assessor

Arborist/Tree Worker

Duty of care responsibility

Develop or accept scope of
work, including time frame
(shared with risk manager)

Provide requested services:

Define and communicate tree
risk management policies
Determine the need to inspect
the trees in question
Establish the budget
Identify the geographical
limits of the tree inspection
Specify the desired level of
assessment
Determine or accept the scope
of work (shared with risk
assessor)
Decide the level of acceptable
risk
Establish the inspection
frequency
Verify target zone uses and
occupancy rates
Prioritize work
Choose among risk mitigation
options

Identify tree and site
conditions to inspect
Identify significant targets,
estimate occupancy rates and
target zone

Tree work safety review
Pruning
Removal
Support systems
Lightning protection

Assess and classify the
likelihood of a tree failure
impacting a target

Tree health treatments

Assess the potential
consequences of a tree failure
impacting a target

Tree replacement

Analyze tree risk
Consider if advanced
assessments are needed
Develop options for
treatments to mitigate risk
Estimate residual risks
after treatment
Recommend an inspection
frequency
Develop report
Send report to client and
explain findings to the
client, if needed

3

Transplanting

Identify the need for
follow-up treatments



BMP - Tree Risk Assessment

Table of Contents for the Digital Edition of BMP - Tree Risk Assessment

Table of Contents
BMP - Tree Risk Assessment - Cover1
BMP - Tree Risk Assessment - Cover2
BMP - Tree Risk Assessment - i
BMP - Tree Risk Assessment - ii
BMP - Tree Risk Assessment - Table of Contents
BMP - Tree Risk Assessment - iv
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