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    Climbers' CornerTree Academy

    Tree Risk Assessment: Transitioning from TRACE to TRAQ


    With the introduction of ISA’s Tree Risk Assessment Best Management Practices (BMP), there have been significant changes in the way that tree risk assessments should be conducted. This course will describe these changes with a focus on the levels assessment established in the BMP, categorizing likelihood of failure and impact, estimating consequences of tree failures, and using the new matrix to rate risk. This is an ideal starting point for Tree Risk Assessor Course and Exam (TRACE) certified professionals, instructors, and other arborists to transition to the new BMP/ISA Tree Risk Assessment Qualification (TRAQ) methodology.


    E. Thomas Smiley , Ph.D.,Plant Pathologist/Soil Scientist, Bartlett Tree Research Lab, Charlotte, North Carolina, United States

    Dr. Tom Smiley is an arboricultural researcher at the Bartlett Tree Research Laboratory in Charlotte, North Carolina, and an adjunct professor of urban forestry at Clemson University. He received an M.S. in plant pathology from Colorado State University and his doctorate in urban forestry from Michigan State University. Tom is a co-author of the ISA Tree Risk Assessment BMP.

    Nelda Matheny , HortScience, Inc., Pleasanton, California, United States

    Nelda Matheny is president of HortScience, Inc., in Pleasanton, California, a horticultural, arboricultural, and urban forestry consulting firm she started in 1983. She and her partner Jim Clark have authored many articles and four books together, including A Photographic Guide to Hazard Evaluation in Urban Areas and Trees and Development. Their most recent book is The Municipal Specialist Study Guide. Nelda is a co-author of the ISA Tree Risk Assessment BMP.

    Climbers' CornerTree Academy

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