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Craig Semmelmeyer, President
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19
Sep
2026
Rotary District 5170 Collaborative Impact Summit
Sep 19, 2026 9:00 AM - 5:00 PM

District 5170 is sponsoring the Rotary Collaborative Impact Summit 2026 on September 19 at the San Jose McEnery Convention Center.  The summit will feature inspirational speakers, multicultural entertainment, and more than 200 Rotary and community projects, all in one unforgettable day. 

The cost is $70 prior to September 8 and then $90.  The Club will pay the cost.

Click here to register for this outstanding District 5170 event.

22
Sep
2026
Mariellen Faria, Director, Eden Township Health D
Sep 22, 2026 12:00 PM - 1:30 PM

Mariellen Faria, Director, Eden Township Health District

Presentation Summary:

Director Faria will introduce Club members and guests to the Eden Township Healthcare District and provide an update on past and current services provided by the District.

Bio:

Director Faria is a Registered Nurse with over 30 years of healthcare experience both as a caregiver and an administrator. She has been the Director of Nursing at St. Rose Hospital, San Leandro Hospital, and Kaiser Permanente San Leandro. Her degrees are in Nursing and Sociology. She possesses a Masters Degree in Nursing Administration. She was instrumental in establishing the Silva Pediatric Clinic and the Chabot Student Clinic. As a lifelong resident of Hayward, she is active in the community.

She is currently a Planning Commissioner for the City of Hayward, a former Human Services Commissioner and is a Board Member for the Hayward Area Historical Society. She is a member of the Hayward Chamber of Commerce. She volunteers with the New Start Tattoo Removal Program and South Hayward Parish food giveaway program.

29
Sep
2026
Legislative Update from State Senator Tim Grayson
Sep 29, 2026 12:00 PM - 1:30 PM

Legislatuive Updae from State Senator Tim Grayson

Presentation Summary:

 

Senator Grayson will describe highlights of the past Legislative Session, share his thoughts looking forward to the 2027 session, and describe some of his work related to the Green Empowerment Zone in Contra Costa County, or economic development more generally.

Bio:

Senator Tim Grayson represents us in the California Senate. He previously served the public in the California Assembly, and as the Mayor of Concord.   He is the son of a Teamster father and his mother was a public transit worker. He is the first in his family to earn a college degree. Senator Grayson has been the Concord Police Department’s Critical Response Chaplain since 2007, providing emotional support and counseling to first responders, victims, and their families during and after traumatic events. He has also maintained a license as a general building contractor since 1997. Tim lives in Concord where he raised his two kids with his wife of more than 35 years, Tammy.

As a co-founder of the Contra Costa Family Justice Center, Grayson has a long and proven history of advocating for victims of domestic violence, human trafficking, and child and elder abuse. He has authored laws that help that higher education is both accessible and affordable.  He was at the forefront of creating a new budget reserve to complement the constitutionally-capped Rainy Day Fund, and helped secure an initial deposit of $1.75 billion, in the hope that we will be able to avoid devastating and debilitating cuts to education and social and government services should a recession strike again. Since being elected to the Legislature, forty of the bills Grayson authored have been signed into law.

06
Oct
2026
Dr. Peter Gleick, Ph.D., Water, Conflict & Peace
Oct 06, 2026 12:00 PM - 1:30 PM

Water, Conflict, and Peace

Presentation Summary:

Violence over freshwater resources is on the rise, with water and water systems as triggers, casualties, and weapons of conflict. This talk will address the long history of water from ancient Mesopotamia to the time of Leonardo da Vinci and Machiavelli to the present violence in the Middle East and Ukraine, as well as how we might move from water conflicts to peace and cooperation over our most precious natural resource.

Bio:

Dr. Peter Gleick is a leading scientist and communicator on water, climate, and environmental security issues. He co-founded the Pacific Institute in Oakland, California in 1987, an independent research center creating and advancing solutions to the world’s most pressing water challenges. His work has focused on the human right to water, the consequences of climate change for the hydrologic cycle, and water, peace, and security issues, including defining, categorizing, and developing solutions for water-related violence and conflict. Gleick is a MacArthur Fellow and an elected member of both the U.S. National Academy of Sciences and the American Academy of Arts and Sciences. In 2018 he was awarded the Carl Sagan Prize for Science Popularization. Gleick is the author or editor of many scientific papers and fourteen books, including the Bottled and Sold: The Story Behind Our Obsession with Bottled Water; The Three Ages of Water; and his newest book, When the Well is Dry: How Water Fuels Violence and Shapes Peace (The New Press, New York).

13
Oct
2026
Jaime Orfanos, Civic & Economic Development
Oct 13, 2026 12:00 PM - 1:30 PM

Presentation Summary:

Jaime Orfanos, Assistant Director of the Civic and Economic Development Departmentn for Alameda County, will discuss What the Department and Doesn't Do as well as curent efforts .

Bio:

Jaimie Orfanos is a UC Davis graduate with five years of private‑sector experience in facility, project, and construction management, followed by 24 years of dedicated public service with Alameda County. Her work has centered on advancing economic development, supporting small businesses, and delivering capital and infrastructure improvements that strengthen local communities in the unincorporated areas of Alameda County. She also leads and coordinates public events that foster civic engagement and promote regional growth.

 

 

20
Oct
2026
October Pizza Mixer at Three Crosses Church
Oct 20, 2026 5:30 PM - 7:00 PM

Share an evening of friendship and pizza with Castro Valley Rotarians, family, friends, colleagues and community members.  More specific details will be posted closer to the event. 

27
Oct
2026
Professor Christian Roessler, Economist, CalState
Oct 27, 2026 12:00 PM - 1:30 PM

Presentation Summary:

"Do the Machines Need Us? How AI Changes the Way We Work and Learn

This talk briefly traces how we got to AI and highlights its main challenge via a true story that once baffled observers. We’ll get into the likely impact on businesses, innovation, and humans - and what employers should be looking for from an education today.

Bio:

Professor Roessler is an economist at Cal State East Bay, with previous appointments at the National University of Singapore, the University of Queensland (Australia), Erasmus University (Netherlands), the University of Vienna, as well as Rice University (TX) and Brown University (RI). A competitive chess player in his youth, Professor Roessler specializes in game theory, the study of strategic interactions. His research has been published in the “top five” economics journals, a distinction won only by a small fraction of professors in the field. His PhD is from the University of Melbourne (Australia); his recent interests include the economics of AI and decentralized networks.

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