Meeting Information

TRACE - Hawaii

Course Intent

  •  provide tree risk assessment training for urban and urban/rural interface areas using the most     current theory, practice, and technical concepts employed in arboriculture,
  •  set the standard at a high level of competence to ensure those accredited are skilled, knowledgeable, and fully aware of their professional     responsibilities,
  •  promote safety and sound arboriculture as a part of the course.


Program Overview

This course was developed in consultation with the Workers’ Compensation Board of British Columbia (WCB), British Columbia Hydro, Wildlife and Danger Tree Committee of British Columbia, and numerous reviewers around North America. The course is administered by the Pacific Northwest Chapter of the International Society of Arboriculture (PNW-ISA).   The course design work was undertaken by Dr. Julian Dunster of Dunster & Associates Ltd. The effort involved several years of extensive research, testing, and review of the materials. In the summer of 2004, WorkSafe BC recognized the course and credential as an accepted industry standard in British Columbia. After a successful 2005 course launch in British Columbia, nearly 80 courses have been held in the Pacific Northwest ISA and over 900 people have been accredited as PNW-ISA Certified Tree Risk Assessors.  WCISA has contracted with PNW-ISA to bring the course to our area.



Participants will receive the course manual at least four weeks in advance and are strongly encouraged to read and study in detail before attending the course. Candidates are expected to have the ability to identify tree species, native or exotic, and to understand and apply basic biology, mechanics, risk assessment, and risk management concepts.


Successful completion earns 

PNW-ISA Certified Tree Risk Assessor qualification

 This course has limited capacity.  Seats will be filled on a first-come first served basis.


Course Information

           The combination of classroom lectures and field work includes modules on biology, structural mechanics, risk theory and practice, reading tree conditions, assessing and assigning risk levels, and prescribing risk mitigation strategies. Day One lectures cover all material in the course manual. On Day Two, the morning will be spent examining trees and practicing assessment skills and data recording. The exam is held on the afternoon of Day Two (for 2.5 hours).

Upon successful completion of the course and exam, participants will be accredited as PNW-ISA Certified Tree Risk Assessors and meet current industry standards. This training course applies to all work activities in and around trees located in urban and urban/rural interface areas. The closed book exam is 2.5 hours in length. A mark of 85% or better is required to pass. The qualification is valid for four years.


Course Eligibility Requirements

Proof of qualification is required with course registration form.

Applicants must be qualified and in good standing with at least one of the following:


  •  Certified Arborist with the International Society of Arboriculture
  •  Certified Forester with the Society of American Foresters
  •  Registered Consulting Arborist with American Society of Consulting Arborists




Jim Flott is the owner of Community Forestry Consultants, Inc. (CFC).  He

received his B.S. degree in horticulture from Iowa State University and his M.S. degree in forest pathology from the University of Arizona and has over 30 years work experience in the horticulture, urban forestry, and arboriculture industries.   He is a board member of the Pacific Northwest International Society of Arboriculture (PNW-ISA) and the Washington Community Forestry Council; an ISA certified arborist and certified municipal specialist; American Society of Consulting Arborists registered consulting arborist; and a PNW-ISA certified tree risk assessor.