Board of Directors

Joan Buchanan, Assemblymember (Ret.), President

Michael Frost, 1st Vice President

Michael Frost was born in Redding and grew up fishing the Sacramento River and Pacific Ocean. He settled in the Bay Area after graduating from the University of Oregon in 1998. Michael works in sales in the Silicon Valley and lives with his wife and daughter in San Carlos. Michael is an advocate for the taxpayers of California and promotes the use of 21st century technology, such as data analytics and the smart grid, to help solve some of today’s most pressing problems.

As a member of the engaged philanthropy group, Full Circle Fund, Michael donates his time and money to non-profit organizations benefiting education, the environment, and global economic opportunity.

Fishing has been a lifelong passion for Michael. The California Delta and San Francisco Bay have provided the perfect playground in the Bay Area’s backyard. He has become involved with Restore the Delta after witnessing the rapid decline of the west coast salmon fishery during his short lifetime. The economic value of the Delta’s environment is something that Michael would like to highlight and promote to all Calfornians. This renewable resource is a gift that will keep on giving with proper care.

Michael Machado, 2nd Vice President

Michael J. Machado was a member of the California State Assembly from 1992 to 2000 and a California State Senator from 2000 to 2008. He is an owner and operator of a diversified farming operation in California’s Central Valley. Mr. Machado is a board member of the California State Compensation Insurance Fund (2008 to present), P & M Farms (1985 to present), and PICO Holdings (2013 to present). He is also a member of the nonprofit boards for the San Joaquin Historical Society Board of Trustees (2012 to present). He is a member of the National Association of Corporate Directors and is a Board Leadership Fellow. He received an undergraduate degree in Economics from Stanford University and a master’s degree in Agricultural Economics from the University of California, Davis. As a state legislator in California, Mr. Machado was heavily involved in numerous issues including water, agriculture, banking, and insurance.

Roger S. Mammon, Secretary

Roger Mammon

Roger Mammon was born in San Francisco and grew up in the East Bay. He has resided in Oakley since 1983. A former police officer and manager in the automobile finance industry, Mr. Mammon has fished all his life and took up hunting as a young adult. Mr. Mammon loves both sports as they allow him to be outside and on the water. He is serving in his third two year term as President of the Lower Sherman Island Duck Hunters Association — a group of local sportsmen and women who enjoy hunting in State Wildlife Management Areas. He is also a Board Member of the West Delta Chapter of the California Striped Bass Association, and is a member of the Committee to Save Our Shoreline in Oakley. The City of Oakley has appointed him their unofficial liaison on Delta matters. He has seen a number of changes in the Delta over the past two and a half decades that are disturbing, and he looks forward to helping restore the Delta.

Barbara Barrigan-Parrilla, Executive Committee at Large

See bio below (under Staff).

Natalia Orfanos, Executive Committee at Large

Director of Public Relations, A.G. Spanos Companies.

Larry Ruhstaller, Executive Committee at Large

Larry Ruhstaller is a former San Joaquin County Supervisor and previous Council member of the Delta Stewardship Council (Council). He has more than 15 years of experience as a local elected official working with state and federal agencies on Delta, flood protection, and water resources issues – and as chair of the San Joaquin Flood Control Agency.

Ruhstaller is a graduate of the University of California at Berkeley where he earned his Bachelors of Arts in US History with emphasis in US city planning. He was a Lieutenant JG in the U.S. Navy and a two-term Councilman for the City of Stockton from 1997-2004. His community involvement includes service as Chairman of the Stockton Asparagus Festival, President of the Board of Directors of the Stockton Visitors and Convention Bureau, and is a member of numerous clubs and associations.

E. Robert Wright, Board Member

Bob is an AV Martindale-Hubbell rated lawyer and Counsel for Sierra Club California. His legal career in Fresno and Sacramento started in 1972 and has ranged from being a law firm partner in private practice including representation of groups seeking enforcement of environmental laws to public practice prosecuting environmental and white collar crime. He was Adjunct Professor of Environmental Law at San Joaquin College of Law in Fresno from 1990 to 2003.

When Friends of the River challenged the Army Corps of Engineers’ rule prohibiting any vegetation other than grass on all of the nation’s levees and the Corps moved to dismiss, Bob won the decision denying that motion. Other victories include the decision in the national class action that school buildings are damaged by the mere presence of asbestos; and the decision finding that the nationwide U.S. Forest Service anti-wilderness land management planning known as RARE II (roadless area review and evaluation) violated the National Environmental Policy Act. Bob also led the inter-disciplinary planning team that developed the Regional Plan adopted by the California Tahoe Regional Planning Agency in 1975.

Bob obtained a B.S. in Business Administration from the University of California, Berkeley in 1966, and after serving as a Captain in the U.S. Army, obtained a J.D. from Harvard Law School in 1971. He has been a member of the California Bar since 1972.

“After all these years in water policy, one resounding lesson is clear: the more I learn about water, the more I know I don’t know. I’ve lived in the Delta region for most of my life and I deeply care about its future.”

Board Members Emeritus: Bill Jennings, Thomas Keeling PhD, JD

George Miller, U.S. House Representative (Ret.), Honorary Board Member

Restore the Delta Staff Members

Barbara Barrigan-Parrilla

Barbara Barrigan-Parrilla is executive director and a co-founder of Restore the Delta. Over the last 14 years, Ms. Barrigan-Parrilla has worked to grow the campaign from 70 to over 60,000 supporters who seek to ensure a healthy San Francisco Bay-Delta estuary and Delta communities.

Ms. Barrigan-Parrilla has worked to give Delta residents a voice and to ensure that they have a direct impact on water management decisions affecting the water quality and well-being of their communities, while working for the advancement of water sustainability and equity policies for all Californians. Through public education and outreach, advocacy, negotiation, protest, and litigation, Ms. Barrigan-Parrilla has advanced the idea that state and federal government must recognize the Sacramento-San Joaquin Bay Delta as part of California’s natural heritage, deserving of protection, while ensuring the inclusion of the Delta’s environmental justice communities in planning and government processes. Ms. Barrigan-Parrilla has developed and promoted policies, programs, and campaigns to restore the health of the estuary and Delta communities. She has defended the pillars of the Clean Water Act, a fishable, swimmable, drinkable, and farmable San Francisco Bay-Delta Estuary. She has led a coalition that envisions the Sacramento-San Joaquin Delta as a place where a vibrant local economy, tourism, recreation, farming, wildlife, and fisheries thrive as a result of inclusive resident efforts to protect our waterway commons.

Prior to joining the campaign, Ms. Barrigan-Parrilla served as the Business Development Manager for the Planning and Conservation League in Sacramento. Ms. Barrigan-Parrilla has also taught English in the California community college system, served as a field representative for the Oakland local of the California Federation of Teachers, and served as executive director for Manifest Press and Literary Arts Center also in Oakland.

Ms. Barrigan-Parrilla holds a B.A. in English from University of California, Berkeley, and a Masters in Fine Arts in Creative Writing and English Literature, from Mills College, Oakland. Contact Barbara.

Tim Stroshane

Born in Pasadena, California, Tim Stroshane is an urban planner with 33 years’ experience in environmental planning, housing economics and policy, and California water policy. He organized and coordinated environmental water coalition comments on the California WaterFix project and RTD’s case before the State Water Board against the project. He authored the 2016 book, Drought, Water Law, and the Origins of California’s Central Valley Project (University of Nevada Press), and is at work on two more books about water projects and the Delta. He collaborates with Ms. Barrigan-Parrilla on letters to government water agencies about water policy topics, and on RTD reports The Fate of the Delta and Climate Equity and Seismic Resilience for the San Francisco Bay-Delta Estuary. Mr. Stroshane earned his bachelor’s in environmental studies at the University of California at Santa Cruz, and a master’s in city planning from the University of California at Berkeley. He lives with his wife and cats.

Mariah Looney

Mariah Looney is the Campaign Coordinator for Restore the Delta. A sixth generation Stocktonian, Mariah loves the city of Stockton, the Delta area, and the community of amazing people that live here. She is a graduate of the Delta Leadership Training, hosted by the Delta Protection Commission. Mariah represents Restore the Delta as the Non Profit Representative for the Delta Protection Commission’s Delta Protection Advisory Committee. She also represents Restore the Delta on the Stockton AB617 Community Steering Committee. In her free time, Mariah enjoys live music and her dog Jellybean and cat Cake. Contact Mariah.

Climate Water Advocates

View our Climate Water Advocates team here.