Leadership & Experience
Our team has extensive experience across carbon management, engineering, project development, and operations.
We combine technical expertise with real-world execution experience to deliver solutions that work beyond the concept stage to deliver attractive economic and environmental returns.
Erica Chase, PE
President
Erica leads CleanCycleCarbon as President, overseeing strategic growth and project development. She led the planning and execution of the Lewiston Carbon Capture facility, guiding its transformation into a commercial-scale CO₂ recovery operation. With nearly two decades of experience at Stantec prior to joining EFI in 2022, Erica brings deep expertise in infrastructure planning, cross-disciplinary leadership, and delivering large-scale environmental projects.
Jake O’Donnell
Vice President and PE
Jake is a mechanical engineer who has a keen focus on maximizing operational efficiencies. At CleanCycleCarbon, he assisted with the redesign and commissioning of the Lewiston CO₂ capture facility, optimizing system performance and reliability. Jake is listed as an inventor on the patent for CleanCycle’s carbon capture technology. Since joining EFI in 2024, he has played a key role in driving technical execution across CleanCycle’s projects.
Hector Cumba
Director of Process Design, PhD
Dr. Cumba is a recognized innovator in biosystems and process engineering, with a track record of developing cutting-edge environmental technologies. He led the engineering and process design for CleanCycleCarbon’s CO₂ capture system and is an inventor on the system’s patent. An EFI team member since 2008, Hector has authored multiple white papers within the biogas and agricultural industries. His technical leadership continues to shape CleanCycleCarbon’s innovation and project success.
Griff Walker
Business Development Manager
Griff joined CleanCycleCarbon in 2024, supporting both sales, marketing, and procurement. He also plays a key role on the cross-functional delivery team overseeing CO₂ logistics at the Lewiston facility.
Becky Atkinson
Commercial Director
Becky joined CleanCycleCarbon in 2026. She is an environmental sustainability leader with over 25 years of combined industry and consulting experience. Becky held prior roles at ERM, Volvo, and most recently as President of GreenGasUSA; she is an expert in carbon capture and accounting, biogas and renewable natural gas (RNG) development, decarbonization strategies, and corporate sustainability planning. She has led initiatives across agriculture and wastewater sectors. Recognized for securing corporate renewable fuel purchases for Scope 1, delivering measurable emissions reductions, advancing renewable energy adoption, and implementing net-zero roadmaps for complex organizations.
CleanCycle Carbon Board of Directors
Dennis Shanklin
Dennis has over 30 years of experience solving some of the most complex environmental challenges. He is also a veteran of the US Navy.
Shanklin founded Environmental Fabrics Inc in 1993, and built extensive expertise in civil engineering, environmental construction and product manufacturing. That knowledge helped EFI become the leading contractor for environmental containment and the biogas market. Today, EFI provides solutions that reduce air pollution and protect water resources.
For over 30 years, Dennis and EFI have led the industry in containment and bioenergy technologies designed to maximize operational efficiency, improve environmental impact and boost profitability for industrial, municipal and agriculture-based clients across the U.S. and around the world.
Board Member
Marc Fetten
Marc is an entrepreneur and investor with 25 years of experience in building, scaling, and aggregating energy, industrial and infrastructure platforms.
Marc is the Founder and Shareholder of GreenGasUSA, a highly successful renewable natural gas platform, Founder of CleanCycleCarbon, a carbon capture business; and Owner of EFI USA, the leader in environmental containment solutions in the US.
Marc has held global leadership roles in finance and operations in Europe, Asia and the Americas with Bayer AG, and has managed family office and PE backed investment platforms. Over the past decade, he has founded and managed several highly successful businesses from start up through exit in energy, renewables and infrastructure.
Owner and Chairman of the Board
Board Member
Paul Raffle
Paul Raffle oversees all aspects of CleanCycleCarbon’s financial operations and acquisition strategies. With a global background in finance and operations, Paul plays a key role in supporting the ownership group and executive management of the business.
Paul began his career at PricewaterhouseCoopers in the UK, leading audit, corporate finance and transactional support assignments across Europe, the U.S., and Africa. He later served as a partner at Arcadia Publishing, where he led Finance and Operations across offices in the U.S., UK, France, and Germany. Between 2018 and 2025, Paul was as a partner and Chief Financial Officer at GreenGas USA, where he also led the company’s Transportation division.
Backed by Proven Expertise
Though CleanCycleCarbon is a new entrant in the carbon capture space, it is far from a typical startup. As a subsidiary of EFI USA, a leading environmental construction and engineering firm with over 30 years of experience, CleanCycleCarbon benefits from deep operational, technical, and financial support. EFI’s long-standing industry presence, in-house construction teams, and proven track record across large-scale RNG and emissions reduction projects provide the resources and stability to deliver at scale. This unique structure allows CleanCycleCarbon to move quickly like a startup, but execute with the reliability, safety, and rigor of an established firm.