Our Story

Deep Isolation was founded through a passion for environmental stewardship, scientific ingenuity, and American entrepreneurship. A remarkable team of experts has been brought together to lead the way in addressing nuclear waste disposal.

Deep Isolation Founders and Officers

Elizabeth Muller, Chief Executive Officer

Co-Founder and CEO of Deep Isolation. Co-Founder and Executive Director of Berkeley Earth. Former Director at Gov3 and Policy Advisor at the OECD. Deep Isolation patents co-author. Environmentalist. Expertise on global warming, stakeholder engagement, strategy, and communications.

Richard Muller, Chief Technology Officer

Co-Founder and CTO of Deep Isolation. Deep Isolation patents co-author who served as a Professor of Physics at UC Berkeley for 34 years. Also served on JASON, an independent group of elite scientists which advises the United States government on matters of science and technology. Winner: MacArthur Prize and Breakthrough Prize.

Jonathon Angell, Chief Financial Officer

Jonathon has executed company strategies leading to increased market share, brand dominance, and return on investment; all leading to the highest valuations for equity holders. Expertise in acquiring capital for growth and guidance to maximize the value of exiting companies. Strengths include Finance and Sales/Business Development; having served as Chief Financial Officer and Chief Revenue Officer in corporate settings. Jonathon holds a Masters Degree in Business Administration (MBA), is a Certified Public Accountant (CPA), is a Certified Financial Manager (CFM), and presently serves on various Boards.

Sophie McCallum, Chief of Staff

Sustainability enthusiast and driven executive experienced in launching companies from the ground up. Passionate about people and start-ups, her expertise lies in growing and scaling companies, bringing teams together and fostering collaboration, and implementing systems and work methods to increase company efficiencies.


The Deep Isolation Team

David Hoffman, VP of Communication

David Hoffman is a communications disruptive innovator (a winner of the Tribeca Disruptive Innovation Award), who uses video in innovative ways to help others reach out to their audiences and motivate them. He had made 88 PBS documentaries, and won 8 Emmys, as well as just about every major national and international film award. He is also a corporate communicator, working with entrepreneurs including Jay Walker (Priceline founder), Jeff Bezos (Amazon founder), and Megan Smith (Obama administration U.S. Chief Technology Officer, former Google VP). He is also considered a YouTube and Google Adwords “guru”, who has helped companies and individual content creators find their audiences on YouTube. He has more than 60 million views on his YouTube channel, where clips from his work are shown.

Zann Aeck, VP of Marketing

Silicon Valley marketing professional who specializes marketing strategy, brand development and in creating digital experiences across multiple channels such as websites, online communities, and social media. Her expertise centers on the data-driven analysis of online behavior and usability to improve the performance of a company’s digital presence in the areas of marketing, support, and ecommerce. Zann also owns and runs a successful pet supply and grooming business near Santa Cruz, California.

Rod Baltzer, Chief Operating Officer

Until early 2018, Rodney (Rod) Baltzer, was President and CEO of Waste Control Specialists LLC (“WCS”), a leading provider of treatment, storage and disposal services for low-level radioactive waste, mixed low-level radioactive waste, and hazardous waste. In January 2018, Rod successfully facilitated the sale of WCS to J.F. Lehman & Company.

Samuel Brinton, Director of Government Affairs

Nuclear engineer who specializes in nuclear waste management policy formation, wicked problem communication projects, and technical information translation. Has written successful legislation as well as managed high level political relationships.

Timothy (Tim) A. Frazier, Senior Advisor Government Affairs

Tim has over 28 years of experience in the nuclear industry, including almost 23 years with the Department of Energy and the Office of Nuclear Energy. He held senior positions at the Department of Energy in the areas of: nuclear energy; nuclear policy; nuclear space power; and, congressional, state, and local communications. While at the Department of Energy, he managed nuclear operations and facilities in the field and from headquarters and while leading large multidisciplinary project teams that included national laboratories and contractors. Tim is a recognized international expert on the backend of the nuclear fuel cycle and has spoken internationally on the subject. He managed the President’s Blue Ribbon Commission on America’s Nuclear Future for the Department of Energy. After leaving federal service Tim was a Senior Advisor at a prestigious D.C. law firm, ran the Bipartisan Policy Center’s a nuclear waste initiative, and established TAFrazier LCC to support other clients.

Betsy Madru, Government Affairs Lead

Betsy is a considered an expert on low-level radioactive waste disposal and the compact system, groundwater conservation districts, and the U.S. Endangered Species Act.  She was the VP of Government and Regulatory Affairs for Waste Control Specialists LLC and executed the company’s strategy for successful business dealings in both regulatory and legislative environments in Texas and Washington, D.C. She has previously had the pleasure to serve as Legislative Director for Texas State Senator Kel Seliger and in the office of Commissioner Larry Soward at the Texas Commission on Environmental Quality. Betsy got her start in California running local district offices and engaging directly with constituents.

Mary Woollen, Director of Community Engagement

Mary Woollen has an extensive background in stakeholder engagement for nuclear and nuclear waste issues. She was Government and Community Liaison for the Blue Ribbon Commission on America’s Nuclear Future, and worked on behalf of the Department of Energy to develop a consent-based approach to siting nuclear waste facilities.

Jim Hamilton, Senior Advisor Community Engagement

Jim Hamilton is a Principal at Stakeholder Capital Consulting. In this role, he is responsible for helping companies across the energy spectrum manage stakeholder-driven regulatory and political risks associated with siting, permitting and operating energy infrastructure and decommissioning projects. Jim has over 25 years of experience in the public, private and NGO sectors throughout North, Central and South America. Mr. Hamilton has advised Entergy and Yankee Atomic Electric Company on their decommissioning programs for plants in Connecticut, Vermont and Massachusetts. He was the lead author of the Yankee Rowe Site Closure Project Plan: the first of its kind in the nation and the roadmap for a successful spent fuel management and site closure effort. He has also advised the U.S. Department of Energy on their spent fuel management program. Jim’s additional experience includes supporting energy companies on transmission and storage facility siting efforts. Jim has also worked with Canada’s First Nation’s communities, served as the Americas Vice President of Sustainability for a multinational mining and mineral processor and taught at MIT’s Environmental Policy Program. Jim earned undergraduate and graduate degrees from the University of British Columbia and MIT respectively. His volunteer work includes serving as Co-Chairman of MIT’s Energy, Environment and Sustainability Global Collaboration Committee.

Judy Lamana, Community Outreach Coordinator

With a B.S. in Environmental Studies and Economics from the University of California at Santa Cruz, Judy has been studying environmental policy and climate issues for many years. She is also the founder of International Trade Today, a daily information service and database of U.S. federal actions affecting imports and exports, serving as its president from 1985 – 2012. Most recently, she is the founder of the Warrenton Climate Change Group, and co-leads it today.

Joe H. Payer, Corrosion and Reliability Engineer

Dr. Payer is an internationally recognized expert in corrosion mitigation, materials performance and reliability, and performance assessment. Dr. Payer had a key role in the analysis of materials performance for the long-term disposal of spent nuclear fuel at Yucca Mountain. He provided technical input to the Office of Civilian Radioactive Waste Management, U.S. Department of Energy and served on the Science and Technology Program. He directed the U.S. Department of Energy, multi-university, Corrosion and Materials Performance Cooperative (2004-2009). Findings enhanced the technical basis and performance assessment for the long-term disposal of spent nuclear fuel for time periods to 10,000 years. Dr. Payer chaired the Waste Package Materials Performance Peer Review Panel (Final Report, February 2002), and co-chaired the workshop on Corrosion Issues of Relevance to the Yucca Mountain Waste Repository co-sponsored by the DOE BES and OCRWM in July 2003. He was a member of the Total System Performance Assessment (Viability Assessment) Peer Review Panel (Final Report, February 1988). He has been invited to make presentations on corrosion issues to the NWTRB and ACNW. Dr. Payer is Fellow and past president of NACE International, a Fellow of ASM International, received the ASTM Sam Tour Award for Distinguished Contributions to Research, Development and Evaluation of Corrosion Testing Methods and currently Chief Scientist Emeritus, The National Corrosion Center at The University of Akron.

Jamie Rector, Senior Geoengineer

Founded and sold two borehole geophysics companies, Tomex and Tomoseis. Also founded Berkeley GeoImaging, which developed and currently manages oil and gas assets in the Midcontinent, Rockies, and Gulf of Mexico.

Stefan Finsterle, Hydrogeologist

Founder of Finsterle GeoConsulting. Previously research scientist at the Lawrence Berkeley Laboratory in nuclear waste isolation, geothermal energy production, fracture hydrology, environmental remediation, and oil and gas production. He specializes in inverse modeling, sensitivity analysis, uncertainty quantification, and geostatistics. He is the main developer of the key iTOUGH2 simulation-optimization framework and is the co-developer of the TOUGH suite of nonisothermal multiphase flow and transport codes, used by the US government and others to analyze underground flow. His Ph.D. is in Hydrology from the Swiss Federal Institute of Technology in Zürich.

Steve Mosher, Director for Asia/Pacific

Scientist at Berkeley Earth. He has written and maintains several R packages devoted to analyzing temperature and climate data with open source tools. Steve has recently transitioned to the consumer sector and specializes in bringing new technology to market.

Dan Ma, Intern

Dan is an advocate for environmental progress and justice. He worked on youth-organizing campaigns with Congressman Lou Correa, represented student voices to the Westminster City Council, and connects Berkeley’s student community to environmental issues through the Associated Students of the University of California.

Mike McBride, Legal Counsel

Mike McBride focuses his practice on litigation, arbitration, mediation, and negotiations involving transportation, energy, and environmental issues, as well as nuclear regulatory matters. He is a partner at Van Ness Feldman, LLP.


Community of Advisors

Per Peterson

Nuclear Engineering Professor at UC Berkeley. Prof. Peterson’s research focuses on problems in energy and environmental systems, including high-temperature reactors, high level nuclear waste processing, and nuclear materials management. He also served as a Member of the Blue Ribbon Commission on America’s Nuclear Future which provided a national framework for nuclear waste management strategy.

Scott Tinker

Internationally renowned energy expert and public speaker, Dr. Scott W. Tinker is director of the Bureau of Economic Geology, the State Geologist of Texas, a professor holding the Allday Endowed Chair in the Jackson School of Geosciences at The University of Texas at Austin, and director of the Advanced Energy Consortium. An AAPG Halbouty Leadership Medalist, GCAGS Boyd Medalist, and a Fellow of the Geologic Society of America,  Dr. Tinker has given over 700 invited and keynote lectures in nearly 60 countries. He is co-producer and is featured in the acclaimed documentary, Switch and is currently working on a sequel focused on energy poverty, SwitchOn.

Daniel Metlay

Dr. Daniel Metlay is an independent researcher working on a monograph exploring the technical and institutional challenges of developing a deep-mined, geologic repository for high-activity radioactive waste. Until recently he was a long-time member of the Senior Professional Staff of the U.S. Nuclear Waste Technical Review Board, an independent federal agency charged with evaluating the technical and scientific validity of the Department of Energy’s high-level radioactive waste management program.   Earlier in his career, Dr. Metlay worked in the Carter White House and with the Secretary of Energy on radioactive waste-management issues.

Robert Budnitz

Dr. Robert J. Budnitz has been involved with nuclear-reactor safety and radioactive-waste safety for many years. He recently retired from the University of California’s Lawrence Berkeley National Laboratory, where he worked on nuclear power safety and security and radioactive-waste management. He also served as a Senior Technical Advisor to the Director of the Yucca Mountain Project.

Steven Chu

Nobel Prize in Physics, 12th US Secretary of Energy, former Director of the Lawrence Berkeley National Laboratory, currently Professor of Physics and Professor of Molecular and Cell Physiology at Stanford. Initiated ARPA-E (Advanced Research Projects Agency – Energy). Created the Blue Ribbon Commission on America’s Nuclear Future. Published 260 papers in physics, biophysics, biology, biomedicine, batteries, and holds 10 patents.

Ed Feulner

Founder and former president of The Heritage Foundation, the most influential conservative think tank in the US. Wharton M.B.A., Edinburgh Ph.D. in Political Science. Syndicated columnist, author of 9 books. Numerous awards for contributions to US and world public policy. Presidential Citizens Medal from President Reagan. Ranked by Karl Rove as “sixth most powerful conservative in Washington.”

Arno Penzias

Nobel laureate in physics who is co-discoverer of the cosmic microwave background radiation, which helped establish the Big Bang theory of cosmology. Arno headed Bell Lab’s research organization and served as the company’s Chief Scientist. Joined New Enterprise Associates in 1997, and continues to work there as a Venture Partner.

Shaun Maguire

Partner at Google Ventures as an entrepreneur, investor, and scientist with a broad and eclectic background. As an investor and adviser, Shaun has worked with companies building everything from quantum computers to self-driving cars.

Will Glaser

Founding CTO/COO of Pandora Media (NYSE: P).  CEO of Grabango, a company using computer vision and machine learning to ease everyday consumer experiences.  Mr. Glaser has extraordinary insight into the solutions demanded by users in data-intensive industries, and was recognized by Microtimes Magazine as one of the 100 most influential people in high-technology.

Clay Collier

Clay’s expertise in communication architecture and software development has established him as a leading player in both the geospatial and energy markets. He is also a Mentor at SkyDeck Berkeley which is one of the first research university startup accelerators developed to foster entrepreneurial excellence.

Bill Edwards

Former Managing Director of Directgov, and Director of e-Communications in the UK Office of the e-Envoy, Bill is a global leader in customer-facing government, and was the chief architect of Directgov (www.direct.gov.uk), and the underlying business process for a new customer-focused service delivery model.