Dr. Joseph K. Lyou
President & CEO

Dr. Joseph K. Lyou serves as President & CEO of the Coalition for Clean Air.  In January 2020 he was appointed to serve on the California Transportation Commission by Assembly Speaker Anthony Rendon. Dr. Lyou also served as the governor’s appointee to the South Coast Air Quality Management District Governing Board from June 2007 to March 2019.

Prior to his work at CCA, he founded the California Environmental Rights Alliance, a public interest group dedicated to working on environmental justice issues. Dr. Lyou has spent 30 years helping community groups and concerned individuals with environmental protection issues, including air and water pollution, the clean-up of contaminated sites, and environmental justice. He previously held management positions with the California League of Conservation Voters Education Fund and Committee to Bridge the Gap. Dr. Lyou received his Ph.D. from UC Santa Cruz in 1990.

Bill Magavern
Policy Director

Bill joined CCA in 2012. Bill has more than 25 years advocating for environmental and public interest causes. He has authored numerous reports and articles on energy and environmental issues, and testifies frequently before the State Legislature, Air Resources Board, and other agencies. From 2000-2011, he represented Sierra Club California on a variety of environmental issues, and was honored in 2003 with the Mary Ferguson Award for outstanding service and in 2011 with the John Zierold Award for outstanding legislative advocacy. Bill was named a Clean Air Champion in 2007 by the Central Valley Air Quality Coalition.

Bill received his A.B in American Civilization, magna cum laude, Phi Beta Kappa, from Brown University and his J.D. magna cum laude, from the State University of New York at Buffalo Law School.

Brian Sheridan
Development Director

Brian has spent the past 17 years leading nonprofit organization’s fundraising and communications efforts. He came to CCA from the Council for Watershed Health, where he spearheaded the growth of outreach, funding and events. Prior to this, he was the Director of Development for Heritage Square Museum. In this role, he oversaw the growth of the museum from a sleepy outpost to one of the Los Angeles’ landmark historic destinations. Brian received his Bachelor of Arts in Political Science from UC San Diego. In his free time, Brian serves on the board of WeTap, a nonprofit organization that improves awareness, access and use of public drinking fountains, reducing dependence on single-use plastic, while improving public health.

Rachelle Arias
Office Manager

Rachelle joined CCA in November 2019. She studied Accounting and Business at Mount Saint Mary’s University. Rachelle brings Accounting, Event Management, and Human Resources knowledge to the table. She has a previous background in fighting for arts education for at-risk youth and worked with the Tule River natives in supporting “Rio Limpio” to educate the community on the importance of clean rivers. Growing up in Tulare County, Rachelle was exposed to bad air quality at a young age and strongly believes in the work CCA carries out. In her spare time, she enjoys creating with flowers, camping, and curating art shows.

Chris Chavez
Deputy Policy Director

Chris joined CCA in 2017, and works on local and state advocacy, disadvantaged communities and electric vehicle deployment. Previously, Chris served as a Legislative Aide for State Senator Fran Pavley (ret.), staffing her on transportation, the state budget and the Senate floor. Additionally, Chris served as a Senate Fellow for then State Senator Alex Padilla and staffed legislation that improved rail service in Southern California. Prior to his time at the Capitol, Chris was a student advocate for California’s public higher education system. Chris has a BA in Political Science from California State University, Long Beach, and is an active member of the Long Beach community.

Trevor Dawn
Communications Manager

Trevor joined the CCA team in August 2018. He brings with him communications experience at nonprofit organizations throughout Los Angeles, working for causes including ending homelessness and animal welfare. Trevor graduated from Pomona College with a degree in politics.


Julia Randolph
Policy and Outreach Associate

Julia joined CCA in 2019. Prior to working with CCA, she did policy, outreach, and environmental work for the California Bicycle Coalition, CA Low Carbon Fuel and Energy Coalition, and with the Governor’s office on the Global Climate Action Summit. Julia has a B.S. in Integrated Science and Technology from James Madison University. She has a strong passion for protecting the environment and loves all things outdoors.

Karin Volpp-Gardela
Events & Development Manager

Karin works out of our Los Angeles office and joined the CCA team in February of 2016. Prior to working with CCA, she spent three years studying in Australia; before that she worked for 10 years as development manager for a local nonprofit providing arts instruction for disadvantaged children and youth. Karin believes that events are an important tool to bring stakeholders together, to create community and to raise the visibility of vitally important issues. She holds a diploma in art therapy and a BA in Business Management.