Sam Hill Tree Care's Andrew Wimmel selected as ANSI Z133 Task Group Chair


SamHill-headshot-2.pngSam Hill Tree Care Production and Safety Manager Andrew Wimmel has been selected as a Task Group Chair for General Safety Requirements of the American National Standards Institute Z133 Safety Standard by the International Society of Arboriculture.

This section focuses on Emergency Procedures and Readiness; Personal Protective Equipment (PPE); Job Briefing and Worksite Setup; Traffic Control; and Fire Protection.

Wimmel will play an integral role in the evaluation and implementation of revisions to American National Standards Institute Z133 Safety Standard for 2022. This vital industry document contains arboriculture safety requirements for pruning, repairing, maintaining, and removing trees; cutting brush; and for using equipment in such operations. The ANSI Z133 Safety Standard also provides federal, state, and municipal authorities in drafting regulations.

As an ISA Certified Arborist, Andrew brings valuable field experience to this appointment.

"Our crews know the priority Andrew places on working safely and smartly," said Sam Hill Tree Care president Sam Hill. "It's gratifying to see this commitment recognized by our industry as well."


About ISA

The International Society of Arboriculture (ISA) supports tree care research and education around the world. To promote the importance of arboriculture, ISA manages the consumer education web site, which fulfills the association’s mission to help educate the public about the importance and value of proper tree care. Also, as part of ISA’s dedication to the care and preservation of shade and ornamental trees, it offers the only internationally-recognized certifcation program in the industry. For more information on ISA and Certifed Arborists, visit