The Plastic to EcoFuel Team

Vadxx’s leadership team is highly experienced in the energy, manufacturing and technology industries. The team is characterized as having a big-business pedigree mixed with an entrepreneurial spirit.


Jim Garrett


Mr. Garrett has served in various financial, operating and engineering management roles with energy and technology companies for over 30 years. These have included executive officer roles with technology start-ups to Fortune 200 companies. He has worked for Marathon Oil Company, Consolidated Natural Gas (Dominion), American Gas Association and Energy West.; Mr. Garrett has raised substantial capital from equity centers throughout the world and has completed numerous public equity offerings.  Professional credentials include Registered Professional Engineer. Mr. Garrett has a B.S. Engineering and MBA, both from Case Western Reserve University; and has served on various company and nonprofit boards.


Bill Ullom

CTO & Founder

Mr. Ullom is founder and owner of Vadose Environmental Consultants, Inc. Prior to the founding of Vadose Environmental, Mr. Ullom served as President of LOMAK Petroleum (Southwest), Inc., and served as Vice President of Exploration & Development, LOMAK Petroleum, Inc.   Previously, he served as Manager of Frontier Exploration and Manager, Gulf Coast Division of Placid Oil Company, directing exploration of its domestic deep water assets and foreign concessions under direction of the Hunt family after serving Hunt Energy Corporation and the William Herbert Hunt Trust Estate. Mr. Ullom is a member of Adjunct Faculty at Stark State College of Technology in the Environmental Technology Program. Mr. Ullom’s education includes geochemistry and geology and a B.S. Geology from Indiana University.


Jeremy DeBenedictis

VP, Operations & Engineering

Through his 12-year career at General Electric, Mr. DeBenedictis gained an extensive understanding of operational leadership, with a particular focus on driving top and bottom line growth through operational and technical excellence coupled with people development. As the Managing Director for a $50M manufacturing business, he utilized Lean Manufacturing and Six Sigma as the enablers for driving breakthroughs in safety, quality, delivery, and cost. Mr. DeBenedictis earned a Bachelor of Science degree in Chemical Engineering from the University of Dayton and an MBA from Case Western Reserve University with a concentration in Banking and Finance. He is also a GE certified Six Sigma Black Belt and Lean Manufacturing implementation expert.


Stan Prybyla

VP Technology

Dr. Prybyla has 25+ years of industrial chemistry process experience with several firms including positions as a R&D Manager and Program Manager at Goodrich Corporation (formerly BFGoodrich). He is an expert in statistical Design of Experiments (DOE) chemistry, process, and manufacture optimization. Dr. Prybyla is active in the area of petroleum yield process analysis and confirmation. Dr. Prybyla has a B.S. in Physical Chemistry from Worcester State College, and M.S. and Ph.D. degrees in Physical Chemistry from Iowa State University.


Tony Colello

Director of Operational Excellence    



Andy Oster

Manager of Feedstock & Logistics


Shawn Patterson

Site Business Leader


Dominic Rosace

Lead Chemical Engineer


Scott Sass

Senior Project Manager


Lou Suriano


Aaron Swope

Project Manager; Electrical & Controls Systems Engineer


Nicholas VanSuch

Electrical & Controls Project Engineer