green seal staff
Green Seal’s staff works cohesively towards our mission of creating a more sustainable world by providing scientific research and standards, certification, greening partnerships and other services to businesses and institutions.
Arthur B. Weissman, Ph.D. President & CEO
Arthur has over 30 years of experience in environmental programs, policy, standards, and enforcement. He has spent over half that time at Green Seal, which he has led for the past fifteen years. In his sustainability work, he has also served as founding chair of the Global Ecolabeling Network and as international convener for ISO standards. Prior to joining Green Seal, he was responsible for developing national policy and guidance for the Superfund program at the U.S. Environmental Protection Agency. He also served as a Congressional Science Fellow and worked for The Nature Conservancy in Connecticut. He holds a Ph.D. from Johns Hopkins University in physical geography and environmental science, a master’s degree in natural resource management from Yale School of Forestry and Environmental Studies, and a bachelor’s degree from Harvard College. His outside interests include family, music, hiking/walking, birding, reading, writing, and thinking. Email: kdanaher [at] greenseal.org
Mehreteab Masho Chief Financial Officer
Masho joined Green Seal in 1994. He is in charge of all financial and administrative aspects of the organization’s operations. He has over 30 years of experience in diversified accounting, budgeting, and financial forecasting. Prior to joining Green Seal, Masho held various accounting positions, including controller with Inter Systems Inc., a high-tech government contracting firm. Masho received his M.B.A. from the University of the District of Columbia. Email: mmasho [at] greenseal.org
Linda H. Chipperfield Vice President of Marketing & Communications
Linda has over 25 years of experience in creative marketing and guides the brand communication efforts for Green Seal. Prior to joining Green Seal in 2006, she served as Creative Director and Team Leader at Noble Communications, and owned and operated a design and marketing shop in Springfield, Missouri. She earned a B.F.A. in design from Southwest Missouri University and has extensive experience in media communications. Linda serves on the board of directors for the Global Ecolabelling Network and conducts peer reviews of the network members. Linda also served on the executive committee and conservation committee for the Missouri Sierra Club and as a delegate for the regional conservation committee for the National Sierra Club. Email: lchipperfield [at] greenseal.org
Mark T. Petruzzi Senior Vice President of Outreach & Strategic Relations
Mark leads Green Seal’s engagement with purchasers, industry groups, trade associations and other external organizations that share Green Seal’s goal of creating a more sustainable marketplace. Over the last 15 years, in his various roles in the Standards and Certification departments, Mark has conducted research on the life cycle impacts of products and services, developed criteria to address key impacts, and evaluated products and services for compliance with Green Seal’s standards in a wide range of product and service categories. Previously Mark was Vice President of Green Seal’s Certification Program. He holds a B.S. in mechanical engineering and a M.S. in civil and environmental engineering from The George Washington University. Email: mpetruzzi [at] greenseal.org
Andrew Beauchamp Project Coordinator
Andrew joined the Green Seal team in 2007 as an intern and began work full time in 2008 after he graduated from The George Washington University with a B.A. in political science and public policy. Andrew splits his work between the Science and Standards department and the Institutional Greening Program. In the Science and Standards department, he manages stakeholder relations and assists with standard development projects, and in the Institutional Greening Program he leads project development and implementation. Email: abeauchamp [at] greenseal.org
Cerise joined Green Seal in 2009 as an intern with an interest in combining her education and work experiences in hospitality management and environmental policy. She became a staff member in 2010. She provides assistance and expertise to clients pursuing certification of Green Seal’s service-related standards. Originally from the Chicago area, Cerise has spent her adult life in Washington, D.C., where she earned a B.B.A. from Howard University and an M.A. in environmental policy from American University. Email: cbridges [at] greenseal.org
Nesia Brown Receptionist
Nesia joined Green Seal in 2008. She’s responsible for a variety of office work and administrative support. Prior to joining the Green Seal staff Nesia worked in the Office of Legal Counsel at the United States Department of Justice.
Email: nbrown [at] greenseal.org
Liliana Cami Accounting Associate
Liliana joined Green Seal in 2009 as Accounting Associate responsible for accounts payable, accounts receivable, payroll and other related duties. She came to the United States from Albania in 1991 and has a degree from Albania University with a concentration in Business Administration. Prior to joining Green Seal, she worked for 16 years in an administrative/accounting role in the private sector. Liliana is enthusiastic about working together to reach Green Seal’s goal of a better, more sustainable world.
Email: lcami [at] greenseal.org
Kathryn Danaher Executive Assistant to the CEO
Kat, a Virginia native, graduated from the University of North Carolina at Chapel Hill with a B.A. in communication studies. Her professional experience includes over nine years of CEO-level executive support, as well as extensive event planning and logistics. She has enjoyed volunteering with several community-based nonprofits, including animal rescue groups and HIV/AIDS causes. Kat joined Green Seal in 2011.
Email: kdanaher [at] greenseal.org
Susan Heaton Director of National Accounts Development
Cassie Johnson Environmental Engineer II
Susan has over 15 years of experience in sales and marketing. Prior to joining Green Seal in 2010, she worked as a raw material manager for Procter & Gamble. During her 15 years there, she was a member of many new product launch teams. As a member of the Outreach and Strategic Relations team, Susan is responsible for new business development and client relations. Susan holds a B.S. in business administration from North Carolina Wesleyan College.
Email: sheaton [at] greenseal.org
Stacey Koch Senior Environmental Engineer
Cassie began working with Green Seal in 2009 as an environmental engineer and focuses her time on performing product reviews in the Certification Program. Prior to joining Green Seal, she was an environmental engineer with RMT, Inc. for 10 years, where she specialized in project management, technical coordination, environmental compliance, and environmental design, including defining and remediating soil, groundwater, and sediment contamination. She also worked in state government for five years, focusing on air, wastewater, and health regulation compliance. She holds a B.S. in civil and environmental engineering from the University of Wisconsin-Madison. Her personal interests include gardening, hiking, and traveling. Email: cjohnson [at] greenseal.org
Anne Maynard Certification Coordinator
Stacey has been working with Green Seal since 2007 and was recently appointed acting director of the science and standards department. Her other duties have included managing certification projects and assisting with the development of Green Seal standards. Prior to joining Green Seal, she was a lead environmental engineer with RMT, Inc. for 12 years, where she specialized in environmental design and management of projects, including industrial wastewater treatment, soil and groundwater remediation, surface water contaminant fate and transport, and sediment remediation. She holds a Master of Science in civil and environmental engineering from the University of Washington and a Bachelor of Science in civil and environmental engineering from the University of Wisconsin-Madison. She also maintains her Professional Engineer license in the State of Wisconsin. Her personal interests include reading, hiking, golfing, canoeing, and gardening. Email: skoch [at] greenseal.org
Watson Millison Associate Certification Coordinator
Anne joined the Green Seal Certification team in 2010. She coordinates the certification evaluation and monitoring process and works with clients to ensure continued compliance with the Green Seal standards. Before coming to Green Seal, she worked at The Center for a New American Dream as the responsible purchasing network membership coordinator. Anne graduated with a B.A. in economics and environmental studies from The College of William and Mary.
Email: amaynard [at] greenseal.org
Watson joined the Certification Team in 2010. He coordinates the application process for certification and assists with Compliance Monitoring reviews. Prior to Green Seal, he worked at B Lab, where he certified B Corporations and handled administrative and finance matters. Watson graduated from Haverford College, receiving a B.A. in growth and structure of cities with an environmental studies concentration. Email: wmillison [at] greenseal.org
Daniel Pedersen, Ph.D. Director of Science and Standards
Mary B. Swanson Vice President of the Certification Program
Daniel provides scientific and technological expertise and leads the creation and revision of Green Seal’s standards. He has over 20 years of experience in environmental science, research, fieldwork, chemical analysis, certification, laboratory accreditation and education. Previously he worked as Director of Environment and Sustainability at a private Certification Body, with clients in the industrial, private, public and academic sectors. Previously he taught Atmospheric Chemistry at the college level, lectured widely on environmental issues, and directed air quality research at Hebrew University, Jerusalem. He is a certified lead auditor for ISO 9001, 14001 & 17025, studied in M.I.T’s Technology & Policy Program, and holds a Ph.D. in Environmental Engineering from M.I.T and a Bachelor of Science in Engineering from Swarthmore College. His personal interests include family, cycling, gourmet cooking, singing, and stage performance. Email: dpedersen [at] greenseal.org
Mary is director of certification and the technical lead for product certification. Prior to joining Green Seal, Mary worked as a research scientist with the University of Tennessee’s Center for Clean Products and Clean Technologies. Mary has 25 years of experience in environmental research and consulting, with a focus on evaluating the fate and effects of chemicals released to the environment, developing tools for evaluating cleaner products and cleaner technologies, and hazardous waste site remediation. She has a Master of Science degree in environmental engineering from the University of Minnesota and a Bachelor of Science degree in natural resources/water chemistry from the University of Wisconsin-Stevens Point. In her spare time, she enjoys gardening, artwork, and long walks in the woods. Email: mswanson [at] greenseal.org
Brie H. Welzer Marketing & Communications Associate
Brie joined the Green Seal Marketing Team in 2012. She supports the strategic communications, graphic design, and online engagement initiatives. Prior to joining Green Seal, Brie provided mission support to the U.S. Environmental Protection Agency, and helped to develop innovative science communication programs in a partnership project with the American Association for the Advancement of Science (AAAS). She graduated with a B.S. in Environmental Science from the University of Rochester, and recently finished her Masters in Sustainable Business from Marylhurst University in Portland, Oregon. Email: bwelzer [at] greenseal.org
Some photography contributed by Laura Burt, www.burtla.smugmug.com