Tom Carpenter – Executive Director
Mary Allison – Operations Director
Liz Mattson – Outreach Director
Nikolas Peterson – Staff Attorney
Angie Malorni – Outreach Coordinator
Audrey Frey – Legal Intern
Tim Feth – Legal Intern
Zoey Kapusinski – Environmental Studies Intern
Jackie Yeh – Outreach Intern


Tom Carpenter, Executive Director


Phone: 206-292-2850 x22
Tom Carpenter Tom Carpenter is the Executive Director of the Hanford Challenge.  He brings decades of experience in organizing, litigating, and policy oversight in the nuclear field, much of it devoted to Hanford.  He is an attorney, a graduate of Antioch School of Law, and has a Masters in Organizational Design and Renewal from Seattle University.

Tom worked as the Director of the Nuclear Oversight  Campaign for the Government Accountability Project from 1985 to 2007.  He founded Cincinnati Alliance for Responsible Energy (CARE) , which challenged plans to open the defect-ridden Zimmer Nuclear Power Plant.  Tom also served on the Cincinnati Mayor’s Environmental Advisory Council.

Through his work at GAP and Hanford Challenge, Tom has visited dozens of nuclear sites in the U.S. and Russia, hosted international conferences on protecting nuclear whistleblowers and examining the legacy of highly-contaminated nuclear facilities, and focusing on the Hanford Nuclear Site in southeastern Washington State.

Tom helped establish and is a Board member of the Hanford Concerns Council  (and its predecessor, the Hanford Joint Council) to mediate and resolve difficult and complicated issues relating to Hanford.

Tom has represented numerous whistleblowers and workers at various nuclear sites around the nation, including at commercial and military nuclear production facilities, such as Hanford, Los Alamos, Knolls Atomic Power Lab, Pantex, Lawrence Livermore, Fernald, Mound and others.  He has authored numerous reports and articles on the effects of nuclear production on workforce health and safety and the environment, and established and participated in independent environmental sampling programs at Hanford, Los Alamos, and Russian nuclear sites.

Mary Allison, Operations Director


Phone: 206-292-2850
Mary Allison has over twenty-five years of senior executive leadership and organizational development experience including financial accomplishment and strategic design expertise in the not for profit, private and public sectors. She is passionate about working with organizations that are experiencing the challenge of meeting their mission during times of economic, social and leadership change. Her work focuses on the creation and implementation of strategic alignment between organizational goals and leadership actions resulting in outcomes that are mission specific, financially productive and personnel supportive.

Her work has included organization and board leadership, strategic goal development, fund raising and conflict resolution. She has Chaired both not-for-profit and for-profit Boards, granting her unique perspective with client staff and volunteer leadership. She has expertise in major donor development and retention as well as capital campaign management.

Prior to becoming a consultant, Ms. Allison served for over twenty years in executive leadership for organizations such as Eddie Bauer, Garden Botanika and Ms. Allison earned her MA degree in Organizational System Design and Renewal from Seattle University, and her BA in Communications from Washington State University.

Ms. Allison’s high energy personality and personal commitment to not for profit service results in client work that anchors alignment between mission, strategy and tactic that is organizationally sustainable and successful. Her unique background allows her to combine the business acumen of a professional manager and executive with the insight of a highly service-oriented leader. She understands the numbers and embraces the human beings. She deeply engages with people around meaning, passion, truth, and achievement.

Liz Mattson, Outreach Director



Phone: 206-292-2850 x21

Liz Mattson Liz Mattson is the Outreach Director for Hanford Challenge. She brings a refreshing spirit of creativity and reflection to the problems posed by Hanford. Liz has worked closely with Hanford workers to address safety and health problems they are facing, particularly from chemical vapors in the tank farms. She meets with state regulatory agencies and site management to influence their approach to safety issues and their response to injured workers with a goal of having workers’ experience respectfully acknowledged and addressed.

Liz is very active on the Hanford Advisory Board (HAB) where she is the chair of the Public Involvement and Communications Committee, encouraging a more strategic approach to public involvement at Hanford. Liz is also involved on the River and Plateau and Tank Waste Committees of the HAB.

Liz helped launch Inheriting Hanford, a regional Hanford mentorship community, empowering young people to become dynamic participants in Hanford cleanup.

She is a strong advocate of working collaboratively to address the problems posed by Hanford. Dealing with decades of contamination will require an intergenerational, multi-stakeholder approach. By building relationships, encouraging openness and trust and working to understand divergent points of view, the broader community of stakeholders will be better equipped to confront the uncertainties and challenges that face remediation efforts.

Nikolas Peterson, Staff Attorney



Phone: 206-292-2850 x25

Nikolas PetersonNikolas Peterson returned to Hanford Challenge in 2013 after completing his studies at Seattle University School of Law. Nikolas interned with Hanford Challenge as the 2011 Matthew Henson Environmental Law Fellow where he worked with nuclear whistleblowers. While at Seattle University School of Law, Nikolas also served as the Research & Technical Editor of the Seattle Journal for Social Justice, represented at-risk youth in King County Juvenile Court, and authored an article on Human Trafficking in Washington state.

Nikolas earned his B.A. in History from Walla Walla University (Senior Thesis: U.S. Dept. of Energy & Washingtonians: A Toxic Dose of Mistrust) and his J.D., cum laude, from Seattle University School of Law. Nikolas was born and raised in Walla Walla, WA and feels great responsibility to those who call the Pacific Northwest home to help ensure a safe and effective cleanup of Hanford. In his free time, Nikolas enjoys playing pickup soccer games, gardening, traveling, cooking, and playing bass guitar.

Angie Malorni, Outreach Coordinator


Phone: 206-292-2850 ext. 26
Angie Malroni - Outreach CoordinatorAngie Malorni joined Hanford Challenge in 2015 as the Outreach Coordinator.

She completed a B.S. in Social Psychology at The Ohio State University in 2011, where she studied the psychology of prejudice and discrimination. She researched the impact of implicit bias on behaviors in accountability processes/structures. She completed her M.P.A at the Evans School of Public Affairs (University of Washington) in 2013. She studied policy analysis, program evaluation and qualitative/quantitative methods. Her degree project led to the development of participatory evaluation methods for Seattle Parks and Recreation’s Youth Employment and Service Learning (YESL) unit. She went on to coordinate service-learning and empowerment programs for teens with the City of Seattle. She developed and facilitated a youth-led research team for young people to assess how well public teen programs are addressing complex social problems and develop skills for taking action.

She is also a dedicated labor and tenant rights organizer for a local grassroots organization. Her favorite holiday is International Workers’ Day. In her free time she enjoys spending time with Arthur (her dog), hiking, reading, biking, and drawing/painting.

Angie is excited about participating on the Hanford Advisory Board and aims to foster meaningful opportunities for young people to engage with sustainable Hanford nuclear cleanup and worker advocacy.

Audrey Frey, Legal Intern


Phone: 206-292-2850
Audrey Frey - Legal InternAudrey Frey is currently a 2L at the University of Washington School of Law (Class of 2016), where she is involved with the Environmental Law Society and the ACLU. Audrey earned her B.A. in English and Philosophy at the University of California, Berkeley, where she worked with the UC Berkeley Public Service Center and directed the Cal in Local Government Program.

She enjoys being on the water and paddling outrigger canoes and dragonboats in her free time.

Tim Feth, Legal Intern


Phone: 206-292-2850
Tim Feth - Legal InternTim Feth is a 2L at the University of Washington School of Law. He grew up in Benton City, Washington, just outside of the Tri-Cities. He received his Bachelor’s Degree in Philosophy from Central Washington University in 2013. Other than the law, his interests include playing basketball and soccer and rooting for Seattle’s sports teams.

Zoey Kapusinski, Environmental Studies Intern


Phone: 206-292-2850

Zoey 2014Zoey Kapusinski is a rising junior at Whitman College, just a short hop away from the Hanford Nuclear Site. She is majoring in Environmental Studies with a focus in Biology and is looking forward to studying abroad in Tanzania this fall.

This summer, Zoey is conducting research for Hanford Challenge on environmental monitoring of water, food, and animals.  She is also assisting with web-based outreach and summer event planning.  In addition to working with Hanford Challenge, she enjoys rock climbing, reading, and spending time with her friends while they’re home for summer break.

Jackie Yeh, Outreach Intern


Phone: 206-292-2850

Jackie YehJackie Yeh is a senior at Charles Wright Academy.  She is currently an intern at Hanford Challenge focusing on outreach and research.

Jackie has been an active member of the Hanford Challenge team for two summers now and remains committed to our mission of securing human health and safety, improving accountability, and promoting a sustainable environmental legacy.  For four years, she has been an active volunteer in Tacoma with her own website,, which provides links for volunteer opportunities for teens.  Jackie also enjoys playing golf, embarassing herself on YouTube, and bringing about civic and social change.





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