Membership

2030 Z133 Committee Members

ISA received many qualified applicants to serve on the Z133 Committee for the 2030 cycle. There are a limited number of seats available. The Z133 Committee’s Nomination Task Group made selections to ensure a balance of interest categories were represented on the 2030 committee. We are pleased to announce the members of the 2030 Z133 Committee below.

While there are limited seats on the Z133 Committee, participation in the Z133 standards process is open to all parties who are directly and materially interested in the standard. Participation is available through voting membership on the consensus committee, through membership on task groups, through service as chair or vice chair, by meeting participation as an interested party, or by public review and comment.

2030 Z133 Membership_2025-4-15.pdf

2030 ASC Z133 Leaders

CHAIR

Gerry Breton

Lucas Tree Experts

VICE CHAIR

Alex Julius

The Davey Tree Expert Company

Gerry is the Director of Safety & Training and one of the company partners at Lucas Tree Experts. Previously he was owner/operator of a safety consulting business. He also worked in power generation for Central Maine Power Co. and Florida Power Light (FPL Energy) for 18 years. Gerry is a Certified Treecare Safety Professional by the Tree Care Industry Association, a Certified Safety Management Practitioner by the Institute of Hazardous Materials Management, and a Certified Utility Safety Professional by USOLN. He is also a US Navy Veteran and has a Bachelor of Science degree in industry engineering technology from the University of Southern Maine with a minor in safety and ergonomics. He resides in Cumberland, Maine, with his wife and has two grown children.

Alex is Project Manager at The Davey Tree Expert Company. She is an ISA Board Certified Master Arborist®, ISA Certified Tree Climber®, Tree Risk Assessment Qualified, and a TCIA Certified Treecare Safety Professional. Alex’s interest in and passion for the Z133 extends back to her time in graduate school, when she wrote her thesis on compliance with the standard and its correlation with credentialing.

2030 Task Group Chairs

Task group chairs have already been selected for the 2030 cycle, and task group work is well underway. Task group rosters are provided with the meeting agendas for those attending the biannual in-person committee meetings. More on task groups follows:

Task Groups

The task group chair and members of the task group shall be appointed by the chair and confirmed by the committee.
The scope, duties, and membership of all task groups shall be reviewed by the committee annually.
The task group chair and members of a task group need not be members of the committee.

Task Group Chair

Managing the task group and its meetings in a manner that is efficient and in compliance with Z133 policies
Completing task group responsibilities in a timely manner, including reviewing draft(s)
Acting as liaison between the committee and his/her task group
Performing other functions as required by the Z133 policies or by request of the task group members
Document task group work and decisions.

Thank you to the Z133-2026 developers, contributors and committee members!

The Z133-2026 is now approved and published! A big thank you to our 2026 Accredited Standards Committee for their dedication and work!

A special thank you goes to Dave Scharfenberger (2026 Chair) and Cary Shepherd (2026 Vice Chair) for their years of service and dedication to the Z133 Committee and the overall development and promotion of the industry safety standard.

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