Delta Conservancy Board

Board Members

Mitch Mashburn, Chair
Supervisor, Solano County

Supervisor Mitch Mashburn represents the 5th District of Solano County, including the City of Rio Vista, Elmira, portions of the Cities of Fairfield, Suisun City and Vacaville, as well as the beautiful rolling hills of Eastern Solano County.

The 5th District is the proud home of thousands of airmen and civilian employees at Travis Air Force Base, hundreds of small farms, orchards and ranches, and a portion of the San Francisco Bay Delta – the largest estuary on the west coast of North and South America, and the world’s only inland Delta.

Mitch’s life is rooted deep in the soil of Solano County and reflects a strong commitment to public service. The grandson of field workers and sharecroppers and son of a proud union electrical worker and Navy Veteran, Mitch is committed to creating new opportunities for another generation to succeed here.

A second-generation graduate of Armijo High School, Mitch spent his summers learning the value of hard while work cutting fruit in Suisun Valley. After an injury sidelined him from football at Solano College, Mitch found a new calling, working for the Solano County Sheriff’s Office as a Correctional Officer.

Prior to his retirement in December 2020, then-Facility Commander Lieutenant Mashburn directed the day-to-day operations of the jails, 300 staff and a seven-million-dollar budget, giving him unique insight into problems created by crime and homelessness. In recent years, Mitch directed construction of the Stanton Correctional Facility and the Roark Vocational Training Center, bringing in both projects on-time and under-budget with two of Solano County’s largest Project Labor Agreements to date.

Sparked by an interest in parks and youth programs, Mitch served as a Vacaville Planning Commissioner prior to his successful run for the Vacaville City Council in 2010. As a Councilmember and Vice Mayor for a decade, Mitch focused on neighborhood safety and creating new job opportunities. Even through an economic downturn, Mitch helped guide the adoption of balanced annual budgets totaling nearly $160 million, protecting taxpayers while maintaining Vacaville’s infrastructure, streets, and community parks.

A solution-oriented leader, Mitch is committed to tackling some of Solano County’s biggest challenges – homelessness, supporting our Veterans, preservation of the Delta, public safety, and balanced budgets in a post-COVID economy.

Mitch and his wife, Tonya, live in Vacaville with their three daughters, McKenzie, Olivia, and Brooklyn.

Sandi Matsumoto, Vice-Chair
Appointed Public Member

Sandi Matsumoto was appointed by the Governor to serve on the Delta Conservancy Board. Ms. Matsumoto has been associate director for the California Water Program at the Nature Conservancy since 2015, where she was project director from 2004 to 2015. She was project manager at the Los Angeles Community Design Center from 2003 to 2004 and a project analyst at Mintz Levin from 1997 to 1999. She is a member of the Groundwater Resources Association. Ms. Matsumoto earned a Master of Business Administration degree in finance from the University of California, Los Angeles Anderson School of Management.

Keely Bosler
Director, California Department of Finance

Keely Martin Bosler was appointed as Director of the California Department of Finance by Governor Edmund G. Brown Jr. in August 2018 and reappointed by Governor Gavin Newsom in December 2018. She serves as the Governor’s chief fiscal policy advisor. Prior to her appointment, she served as Cabinet Secretary for Governor Edmund G. Brown, Jr. from 2016-2018. Director Bosler previously served as Chief Deputy Director for Budget at the Department of Finance from 2013 to 2016.

Bosler was Staff Director for the California State Senate Budget and Fiscal Review Committee from 2010 to 2013, where she was a consultant from 2004 to 2009. She also served as Associate Director for fiscal services over the California Department of Corrections and Rehabilitation’s Budget Management Branch from 2009 to 2010. She started her career at the California Legislative Analyst’s Office, where she served as a Fiscal and Policy Analyst from 2000 to 2004.

Bosler is a graduate of California State University, Chico with a bachelor’s degree in Agriculture Business. She also holds a master’s degree in Applied Economics from Cornell University.

Wade Crowfoot
Secretary, California Natural Resources Agency
Wade Crowfoot was appointed California Secretary for Natural Resources by Governor Gavin Newsom in January 2019.

As Secretary, Crowfoot oversees an agency of 19,000 employees charged with protecting and managing California’s diverse resources. This includes stewarding the state’s forests and natural lands, rivers and waterways, coast and ocean, fish and wildlife, and energy development. As a member of the Governor’s cabinet, he advises the Governor on natural resources and environmental issues.

Crowfoot believes effective management of California’s resources allows communities and natural places to thrive and the economy to grow. This includes strengthening the connection between Californians and natural resources by expanding access to parks and natural places. Crowfoot is also prioritizing building California’s resilience to growing challenges from climate-driven threats, including drought, wildfire, flooding and sea-level rise.

Crowfoot brings over two decades of public policy and environmental leadership to the office, with expertise in water, fisheries, climate and sustainability issues. He most recently served as chief executive officer of the Water Foundation, a nonprofit philanthropy that builds shared water solutions for communities, economy, and the environment across the American West. In that role, he developed innovative partnerships among a broad range of partners including agricultural leaders and environmental conservation groups.

Prior to joining the foundation, Crowfoot served in Governor Jerry Brown’s Administration as deputy cabinet secretary and senior advisor to the Governor. In that role he led the administration’s drought response efforts and spearheaded several of the Governor’s priority initiatives to build California’s resilience to climate change. He previously served as West Coast regional director for the Environmental Defense Fund and a senior environmental advisor to then-San Francisco Mayor Gavin Newsom, where he helped to lead many of Mayor Newsom’s nationally-recognized environmental initiatives.

Crowfoot received a bachelor’s degree in political science from the University of Wisconsin-Madison in 1996 and earned a master’s degree in public policy from the London School of Economics in 2004, where he graduated with honors.

A native of Michigan, Crowfoot grew up spending his summers outdoors. Upon moving to California in the mid-1990s, he became an avid hiker and backpacker and marks his first hike in the redwoods as Big Basin State Park as one of his defining California moments. Now, he spends his down time camping and hiking with his wife, Lisa, and their young daughter.

Don Nottoli
Supervisor, Sacramento County

Don was first elected to the Sacramento County Board of Supervisors in November 1994. Prior to his election, Don served as chief assistant to former Fifth District County Supervisor Toby Johnson for 16 years. Don and his wife Brenda are lifelong residents of Sacramento County, and make their home in the community of Galt. Don is a former member of the Galt City Council and served for more than 17 years as a board member with the Galt High School District Board of Trustees. Don graduated from California State University, Sacramento, earning a Bachelor of Arts degree in Government/Journalism. Don is active on many boards including the Delta Protection Commission, Delta Stewardship Council, Sacramento Area Flood Control Agency, and Freeport Regional Water Authority.

Katherine Miller
Supervisor, San Joaquin County

Kathy Miller was elected to the Board of Supervisors in June 2014 and served as Board Chair in 2015. Previously, she served on the Stockton City Council 2009 – 2014, and as Vice Mayor 2009 – 2012. She currently represents San Joaquin County in many capacities, including San Joaquin General Hospital, the Homelessness Task Force, the Children & Youth Task Force, San Joaquin County Employees Retirement Association and as Chair of the San Joaquin Council of Governments.

Kathy continues her leadership on regional water issues with the Five Delta Counties Coalition, San Joaquin Delta Coalition, and as Chair of both the San Joaquin Area Flood Control Agency and the Sacramento-San Joaquin Delta Conservancy. In addition, she previously held leadership positions on the Northeastern San Joaquin County Groundwater Banking Authority and rose to the rank of Second Vice President of the state-wide League of California Cities. Kathy Miller and her husband, Karl, have been married 40 years, have three grown children and two grandchildren.

Karen Mitchoff
Supervisor, Contra Costa County

Supervisor Karen Mitchoff was sworn in as Contra Costa County District IV Supervisor in January of 2011. She began her service to the County in the office of former Sheriff-Coroner Richard Rainey. She also worked as a fiscal and administrative analyst for the county’s Employment and Human Services Department, and as Chief of Staff for former Supervisors Sunne Wright McPeak and Mark DeSaulnier. Supervisor Mitchoff served on the Pleasant Hill City Council from 2008 to 2010, and as Mayor in 2010. Supervisor Mitchoff was appointed to the Pleasant Hill Recreation and Park District Board of Directors in 2003 and was elected to that Board in 2004 and 2006. She served as Chair in 2005 and 2006, and served on a variety of committees during her tenure there. Supervisor Mitchoff was appointed to the Pleasant Hill Citizens’ Advisory Committee on Redevelopment in 1988, and also served on the Planning Commission from 1992-1996.

Jim Provenza
Supervisor, Yolo County

Jim Provenza first entered public office in 2003 as a Member of the Davis Joint Unified Board of Education, where he served as President of the Board of Education from 2006-2007. Jim’s priorities are to preserve and protect open space and farm land in Yolo County, to promote services for seniors, children, crime victims, and the disabled, and to insure that Yolo County is able to provide essential law enforcement services and public safety protection. He has 29 years of county and state government experience, and a long career in public interest law. For the past 15 years, Jim worked as a special assistant district attorney.

Appointed Public Member

This position is currently vacant.

Dolores (Dolly) Sandoval
Appointed Public Member

Dolly Sandoval was appointed by the Governor to serve on the Delta Conservancy Board. Sandoval currently serves as Vice-Chair of the Valley Transportation Authority (VTA) Board of Directors and as a Board member of West Valley Community Services. She served two terms on the Cupertino City Council, 1996-2004 and three terms on the Foothill-DeAnza College Board in 1992-2004. She has served on the VTA Policy Advisory Committee, the VTA Citizens Advisory Committee, and on the Board of Directors for the Foothill-DeAnza Colleges Foundation, Council on Higher Education Accreditation and Friends of the River. She is a graduate of University of California, Santa Cruz and the Leadership Development Program of Mexican-American Legal Defense & Education Fund. She also leads whitewater rafting trips as a volunteer guide for Friends of the River. She currently works as a high school math teacher.

Leo Winternitz
Appointed Public Member

Mr. Winternitz currently works for GEI Consultants Inc. as a senior project manager and has most recently served as the Co-Chair to the state and federal Collaborative Science and Adaptive Management Program since its establishment in 2013.

Prior to joining GEI, Mr. Winternitz held several positions in the California water resources arena, most recently, as Delta Program Director and Senior Advisor for The Nature Conservancy. Prior to this, Mr. Winternitz served as Deputy Director for the CALFED Bay-Delta Program, which focused on water and environmental management activities in the Sacramento-San Joaquin region. He also served as the Executive Director for the Sacramento Water Forum a diverse group of 40 stakeholder organizations representing business, agriculture, citizens’ groups, environmentalists and water managers who have collaboratively negotiated a regional water supply and environmental protection agreement for the American River watershed to the year 2030. Mr. Winternitz has also served in public office as a director and past-President of the Arcade Water District, and is currently on the board, and has served as president to the American River Parkway Foundation.

Ex-Officio Members

Senator Bill Dodd
State Senate District 3

Assemblymember Timothy Grayson
State Assembly District 14

Liaison Advisors

Brooke White
U.S. Bureau of Reclamation, Mid Pacific Region

Steve Chappell
Suisun Resource Conservation District

Jessica Fain
San Francisco Bay Conservation and Development Commission

Jessica Davenport
California Coastal Conservancy

Marge Kolar
Yolo Basin Foundation

Maria Rea
U.S. National Marine Fisheries Service

Paul Souza
U.S. Fish and Wildlife Service

Stu Townsley
U.S. Army Corps of Engineers, South Pacific Division

Michael Villines
Central Valley Flood Protection Board

Bruce Blodgett
Delta Protection Commission