Zachary Knox Griefen joined the firm as associate counsel in September 2007. Prior to joining Cheney, Brock & Saudek, he served as the senior judicial law clerk for the Honorable Thomas Durkin and the Honorable Merideth Wright at the Vermont Environmental Court. The Vermont Environmental Court has broad jurisdiction over environmental matters, hearing appeals from municipal boards and commissions, appeals from Act 250 decisions, and Agency of Natural Resources, Natural Resources Board, and municipal enforcement cases.

Zachary K. Griefen graduated from Vermont Law School in 2005, where he earned a J.D., cum laude, and a Master of Studies in Environmental Law, magna cum laude. He received his undergraduate degree, cum laude, from the University of New Mexico in 2002. During law school, he was the Vermont Editor of the Vermont Law Review and a student clinician at the Environmental and Natural Resources Law Clinic. In 2004 he worked as a summer associate at the Conservation Law Foundation. He currently serves on the Executive Committee of the Vermont Chapter of the Sierra Club and chairs its Wetlands and Water Quality Committee. 

Zak Griefen is a member of the Vermont and American Bar Associations and is admitted to practice law in Vermont and Massachusetts. Zak is an avid angler and is particularly interested in protecting healthy streams and promoting sustainable land use. He lives with his wife Amé and their two children in Montpelier.