BMP - Utility Tree Risk Assessment - 23

Data Collected
Specifications for UTRA may define the minimum size of the tree part (e.g.,
branch and stem) of concern as well as other factors, such as species with
high-failure potential, minimum degree of lean, live crown ratio, degree of
taper, or other conditions of concern (see Appendix 3). The tree conditions
of interest would vary based on the type and intensity of the assessment
specified. A Limited Visual assessment would only identify obvious defects
and conditions that would be visible to the utility tree risk assessor, which is
typically one side of the tree.
When a condition of concern is identified, specific information about that
tree should be recorded, which would be specified in the scope of work for
the UTRA assignment and may vary with the intended level and assessment.
Generally, it may include the tree location, species name, tree size, defect or
condition identified, and work priority. Additional information may include
mitigation recommendations, access/directions, landowner name, contact
information, and permits needed. Data can be collected on handwritten
forms, maps, tablet forms, or GIS (geographic information system) based
data collection devices. The chosen data collection method should be compatible with utility systems for ease of transfer and use.
Schedule
The time over which the UTRA assignment should take place, including
expected start date and due date for the report, should be specified.
Risk Ratings and Risk Mitigation
The scope of work for UTRA projects should specify if the utility tree risk
assessor is to include a rating of the current tree risk based on direct consequences of a tree strike on overhead utility infrastructure. The scope of
work should also specify whether risk mitigation recommendations are to be
included.
Method of Reporting
The method of reporting and any documentation required should be defined.
The preferred method for reporting findings and conclusions from an assessment of a large population of trees may include a written summary and
detailed tabular report or spreadsheet and marked-up map or spatial dataset. In general, verbal reports should be supported by a written report if

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BMP - Utility Tree Risk Assessment

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

Table of Contents
BMP - Utility Tree Risk Assessment - Cover1
BMP - Utility Tree Risk Assessment - Cover2
BMP - Utility Tree Risk Assessment - i
BMP - Utility Tree Risk Assessment - ii
BMP - Utility Tree Risk Assessment - Table of Contents
BMP - Utility Tree Risk Assessment - iv
BMP - Utility Tree Risk Assessment - v
BMP - Utility Tree Risk Assessment - vi
BMP - Utility Tree Risk Assessment - vii
BMP - Utility Tree Risk Assessment - viii
BMP - Utility Tree Risk Assessment - ix
BMP - Utility Tree Risk Assessment - x
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BMP - Utility Tree Risk Assessment - Cover4
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