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CPR Staff Bios


Sarah Aird, Co-Director

Sarah joined CPR core staff in 2010. Prior to joining CPR, she was the Executive Director of the Network in Solidarity with the People of Guatemala in Washington D.C., where she also led an anti-gentrification campaign resulting in the preservation of affordable housing in her neighborhood. Since moving back to California, Sarah has worked with Amazon Watch, Friends of the Earth, and as an immigration lawyer and was a Board Member of Amnesty International USA. Sarah earned her law degree from American University and an M.A. in International Affairs from Columbia University. She spent two years working in Chiapas, Mexico, and Guatemala with local human rights organizations and is fluent in Spanish.


Tracey Brieger, Co-Director

Tracey has worked with CPR since 2002. She helped develop and lead the Safe Air for Everyone (SAFE) Campaign and the coalition’s sustainable agriculture work. Before joining CPR, Tracey worked in Canada, Thailand, Laos and India challenging destructive “development” projects funded by international financial institutions and working with local NGOs on organic agriculture projects. Tracey was on the initial Steering Committee of the California Food and Justice Coalition, and served on the CA Department of Pesticide Regulation’s Environmental Justice Advisory Committee. In 2010, Tracey completed the Anne Braden Anti-racist Training Program for white social justice activists. Tracey has an M.S. in Environmental Science, Policy and Management from UC Berkeley.

Stephanie Tidwell, Grants and Communications Manager

Stephanie joined CPR core staff in 2014. Stephanie has more than a decade’s experience as a non-profit leader and fundraiser, most recently as the Foundations Director for Corporate Accountability International. Prior to that, she spent nine years as the Executive Director of the Klamath-Siskiyou Wildlands Center in northern California and southern Oregon. Stephanie has a B.A. in Anthropology from Appalachian State University, an M.A. in Communications from the University of Colorado School of Journalism, and a graduate certificate in Environmental Policy, also from the University of Colorado.

Mark Weller, Community Organizer

Mark joined CPR staff in 2014. He previously worked for 14 years as Projects Director for Monterey Bay-based UNITE HERE Local 483, organizing community and political support for hospitality workers. Mark has a B.A. in Political Science from University of California San Diego, an M.A. in Sociology from San Jose State University, and is co-author of "Dollars and Votes: How Business Campaign Contributions Subvert Democracy."

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Former staff

Many thanks for their years of dedication to and hard work at CPR!

David Chatfield, Former Executive Director
David moved on from CPR in 2011, but was Executive Director of the coalition for 14 years. Prior to joining CPR in 1997, David was California Director of Clean Water Action. He worked for Greenpeace for ten years before that, primarily as the Southwest Regional Executive Director, but also as International Pesticide Coordinator, and, for two years, Chair of the Greenpeace national board of directors. From 1977 to 1985, he was International Director of Friends of the Earth. David worked with the American Friends Service Committee in the 1970's. David is currently Chair of the national Greenpeace Fund Board, and serves on the boards of California Sustainable Agriculture Working Group, the Global Greengrants Fund and California-based Greenaction. He has a BA in International Relations from Occidental College (Los Angeles).

Teresa DeAnda, Former Central Valley Coordinator

In addition to being CPR's coordinator in the San Joaquin Valley from 2003 until 2012, Teresa is the President and Director of El Comite Para el Bienestar de Earlimart, in Earlimart, a small farmworker town in Tulare County, California's Central Valley. El Comite educates local townspeople and those in other rural towns about the dangers of day-to-day pesticide drift and provides information about what residents can do in the case of a pesticide drift emergency. Teresa started the organization as a direct result of a drift accident that occurred in Earlimart in November 1999, when a toxic cloud of pesticides drifted onto her agriculture-surrounded community, making 180 people ill. Teresa has testified many times on the need for adequate response to poisoning events to the California Department of Pesticide Regulation. She spoke at CPR's February, 2003 Drift Conference on the theme, "Absolutely Never Do Nothing." Teresa is on the advisory boards of the Center for Race, Poverty and the Environment and Latino Issues Forum. She is bi-lingual (English/Spanish).