Martinelli Center
3585 Greenville Road, Suite 2
Livermore, CA 94550-6710
P (925) 371-0154
F (925) 960-1550

Alameda County Resource Conservation District Board of Directors

RCD Directors are local citizens who are familiar with local agricultural and natural resource issues. They are appointed by the Alameda County Board of Supervisors to serve four-year terms. A Director must either be a landowner within RCD boundaries or have served as an Associate Director for two years or more.

The Alameda County RCD Board meets the third Monday of every month at 6:00 pm at the RCD office. All Board meetings are open to the public.  View meeting dates and agendas.

Interested in the Board Member Vacancy position?
See here for the Notice of Vacancy Announcement Memo to learn more information and to learn how to apply.

Please contact Marilyn Harvey at 925-371-0154 ext. 113 for more information.


If you are interested in contacting one of our directors, please contact Marilyn Harvey at 925-371-0154 ext 113.

Mark Connolly

Mark Connolly is President of Connolly Ranch Inc., a cow/calf operation located in San Joaquin and Alameda Counties. The  Connolly Ranch is a member of the CA Cattlemen’s Association, the American Grass-Fed Association, the CA Farm Bureau and the San Joaquin Farm Bureau. 
Mark served three terms (13 years) on Tracy Joint Union School District Board of Trustees and is a Director of the CALFAUNA Foundation. Mark also has a civil litigation practice in Tracy and is a graduate of the University of Santa Clara, School of Law, 1982. Mark is a member of the CA Bar Association.

Darrel Sweet 
Vice President

Darrel is a fifth generation California landowner and rancher, who is involved with numerous conservation and rangeland management organizations.  In addition to working as a Resource Conservation District Director for 19 years, Darrel is the past President of the Alameda County Agricultural Advisory Committee, The California Rangeland Trust, the California Cattlemen’s Association, and the Contra Costa—Alameda County Cattlemen’s Association.  Currently serving as Vice President, Darrel has been an active member of the ACRCD board since 2011.

Dan Sachau

A lifelong resident of the Livermore valley, Dan has spent many years managing land in Alameda County.  After receiving his B.S. from Cal Poly, San Louis Obispo in 1976, Dan returned to Livermore to work as a Construction Manager for Lawrence Livermore National Laboratory (LLNL).  In addition to his 30 year career at LLNL, Dan has been an avid cattle rancher and vineyard owner in the region for many years.  Dan has served as the Treasurer since 2012, and in addition to these duties, serves as a member of both the Executive Committee and Finance Committee.

 Bill Hoppes


Born and raised in the Bay Area, Bill’s education and career have taken him across the United States and back again.  Upon completing his M.S. in Environmental Biology at CSU Hayward, he worked as an Environmental Scientist (ES) for the El Paso Natural Gas Company.  After earning his PhD from U.I. Urbana-Champaign, he served on the faculty at SUNY, Plattsburgh, was executive director of a non-profit in the D.C. area, and served as an ES with the EPA.  Bill joined LLNL in 1991, first as an Environmental Scientist  and later as a Water Guidance and Monitoring Group Leader.  Since retiring, he has transitioned to supporting conservation through volunteer roles with the Tri-Valley Conservancy, Ohlone Audubon and the ACRCD.

Laura Mercier


Laura became the Executive Director for Tri-Valley Conservancy (TVC) in 2011, after having held several roles at TVC since 2002.  Prior to joining TVC, she worked 15 years as a Project Manager / Engineer for Boeing in Long Beach, CA. She also consulted as a Project Manager for a wide range of companies including Environmental Education for Kids, Culldez Product Development, and Thermal Press International. In 1998, Laura moved back to Livermore to be closer to family. As Executive Director for TVC, Laura understands what it takes to run all aspects of an organization preserving open space and agriculture land. Laura is excited to assist and support ACRCD to be a strong organization that maintains viable partnerships with the NRCS as well as other public agencies, private landowners and other organizations.

Marilyn Russell

Marilyn is a third generation rancher, now managing her family’s 5,000 acre ranch in Mendocino County.  A retired biology teacher, Marilyn taught Livermore HS students about native flora and fauna for over 30 years.  Marilyn is an avid equestrian, competing in long distance endurance rides, participating in Historic Trails rides, and currently active as the Vice President of the Tri-Valley Trailblazers.  Currently, Marilyn is very involved with the Friends of Tesla Park.  A member of the  CA Rangeland Trust, Mendocino County Farm Bureau, and CA Rangeland Conservation Coalition, Marilyn is extremely active in ranching and conservation organizations in Alameda County, and throughout California. 

Nikki Wente


Associate Directors

Sheila Barry

Natural Resources/Livestock Advisor, UC Cooperative Extension

Chris Costello


Rich Fletcher

Land Manager

Jed Freitas
Owner of Freitas Rangeland Improvements

Kristel Ising

Rancher and Pistachio Grower, Livermore

Jim Robins

Principal Owner of Alnus Ecological