Bruce Abelli-Amen has lived in Petaluma for over 25 years, raising a family and working as a Professional Geologist and Certified Hydrogeologist for an environmental consulting firm. He has a bachelor’s degree from UC Santa Barbara and a master’s degree from Humboldt State University, both in Geological Sciences. His work has focused on CEQA review of proposed development projects, including aggregate mining, infrastructure, water supply tunnels, wastewater treatment plants, and levee projects. He has also managed numerous groundwater monitoring well networks and conducted water quality investigations.

John J. Nagle grew up in western Sonoma County, where he raised his family and has worked in the environmental field for 30 years; managing land use issues, farming and industrial environmental regulatory risks. He serves as 5th District representative on the advisory committee of the Sonoma County Agricultural Preservation and Open Space District and the Santa Rosa Plains Basin Advisory Panel.

Walter Ryan, Jr. grew up in Sonoma County in both the Bodega and Santa Rosa area and graduated from Santa Rosa High School. After earning a degree in Mechanical Agriculture from Cal Poly, Walter assisted his family part-time on the family ranch in Bodega while working as a supervisor in the field of public works. He was active for many years dedicating his time to agricultural youth education, serving on the Santa Rosa High School Foundation, was Chair of the Santa Rosa High School Ag Advisory and additionally served as Chair to the Ag Boosters. Walter formerly served on the Sonoma County Farm Bureau Board and sat on the Santa Rosa Basin Plan advisory representing the Farm Bureau and its constituency. He left the public sector in 2002 to manage full-time the ranch where his family has been raising livestock for over five generations.

Ron Rolleri, born in Berkeley, earned an AE in electronics engineering and worked at UC Berkeley for four years before moving to Sonoma County in 1971 working as an engineer. After studying agriculture and viticulture at SRJC Ron started his contracting business in 1980 specializing in irrigation and vineyard management, xeriscape, native plants, and planted Hidden Springs Vineyard and winery. Ron served on the Sonoma Co. Vineyard Technical Group board for 8 years and helped develop the first draft of the hillside erosion control guidelines. Ron has served the SRCD since 1998 and the California State Association of RCDs for over ten years.

Beth was born and raised in Northern California, and has had ties to Sonoma County agriculture for over 35 years. For the past 10 years, she has managed her family’s cattle business, 5B Ranches. She has three grown children, and splits her time between Sonoma Valley and Bodega.

Earle W. Cummings graduated from Sonoma State University in Biology and has an MS in Ecology from UC Davis. As a former employee of the State of California in a number of environmental agencies, in both a technical and administrative capacity, Earle has experience in Wildlife Biology, Water Rights, Water Quality, Environmental Regulation, Timber Harvest Plan review, Endangered Species Act compliance, and California Environmental Quality Act and National Environmental Policy Act document preparation. Living near Lake Sonoma, Earle is from a fourth generation Sonoma County family.

Ariana Reguzzoni was born and raised in Oakland, CA and has lived in Sonoma County for almost a decade.  She is a journalist and communications professional and currently works for the Sonoma County Regional Parks and TrimTab Media.  Her documentary film work has aired on cable television and local and national PBS stations and her print work has appeared in multiple publications including Civil Eats, Grist, Made Local Magazine and the Press Democrat newspaper.  She has worked as a Communications Coordinator for California FarmLink and co-owned a small organic cut flower farm in Petaluma, CA.  Ariana has a master’s degree in journalism from UC Berkeley, a bachelor’s degree in community studies from UC Santa Cruz and a certificate in ecological horticulture from UC Santa Cruz. 

Delmar Friedrichsen was born and raised in Petaluma. He took over his parents’ poultry (Friedrichsen Egg Ranch) and sheep ranch, producing eggs and lambs. Delmar’s family is involved in agriculture and assists him with the ranching. He also serves as a board director for Two Rock Fire Department.

Valerie has over thirteen years’ experience in the field of natural resources and has developed a strong background in ecology, water quality, agricultural conservation, and public policy. Valerie began her service at the RCD in 2008. Over the years she played many different roles on the team, gaining experience in all program areas as well as operations, finance, and fundraising, and in 2017 she was selected to serve at the RCD’s Executive Director. In this role, Valerie oversees the RCD’s day-to-day functions while providing strategic direction for the future, building partnerships, and advocating for the RCD at the local, state, and federal levels. She serves at the direction of the RCD’s Board of Directors, and works in partnership with the entire RCD team. A life-long Sonoma County resident, Valerie holds a B.S. in Biology from Sonoma State University, and is very active in her community, including serving as Vice Chair of the North Coast Regional Water Quality Control Board.

Adrienne is a finance and operations professional with more than a decade of experience in the nonprofit, higher education, government, and private sectors. She has spent six years working with environmental conservation organizations in NY and CA and currently serves on the Regional Climate Protection Authority’s Climate Action Advisory Committee. As the Director of Finance at the RCD, Adrienne leads the agency’s financial, human resources, and risk management functions. She earned a B.A. in Psychology from Lehigh University and has expertise in nonprofit accounting, budgeting, and grants and contracts administration.

Wendi has 30 years of experience in accounting and finance, including two decades in the airline and hotel industries in Hawaii and Nevada, and—for the last 13 years—in the wine industry in Sonoma County. Over the course of her career, Wendi has overseen budgeting, monthly close, audit coordination with multiple government agencies, and human resources, including payroll and employee benefits. After retiring from the wine industry, Wendi decided to put her skills to use with mission-driven nonprofit and government entities. She’s especially excited to directly benefit her community through her work at the RCD.

Aaron has over fifteen years of experience in the environmental restoration/enhancement field. His expertise includes development and project management of projects including bioengineering and sediment reduction techniques for bank stabilization, in-stream large woody debris installations, fish habitat enhancement structures, road improvement techniques, and riparian enhancement projects. Aaron also has experience in stream habitat-typing on tributaries of the Russian River watershed, spawning surveys, erosion surveys, and grant writing. At the RCD, he works with landowners, volunteers, consultants, contractors, and multiple agency personnel to develop and Implement LandSmart On-the-Ground projects including stream enhancement and rainwater catchment. He also works with ranchers to develop LandSmart Plans. Aaron received a B.A. in Environmental Science from Willamette University and an M.S. in Environmental Science, with a Watershed Management focus, from Washington State University.

Erica is a licensed civil engineer whose experience includes the design and construction of water quality projects on dairies, livestock water developments, rainwater catchment systems, grading and drainage, retaining walls, and industrial, commercial and residential developments with an emphasis on using Low Impact Development (LID) design principals. As a Qualified Stormwater Pollution Prevention Plan (SWPPP) Developer (QSD), she has experience overseeing construction stormwater monitoring programs and making BMP recommendations to contractors and landowners. Her background also includes a variety of field work including environmental remediation projects, water quality sampling and hydropower dam inspections. As Partner Engineer, Erica is responsible for overseeing and performing a variety of complex professional field and office engineering work in connection with the mission of the Sonoma, Gold Ridge and Marin Resource Conservation Districts (RCDs). Erica is originally from the Bay Area and received a B.S. in Civil and Environmental Engineering from the University of California, Berkeley. In her spare time Erica teaches an Introduction to Engineering class at the Santa Rosa Junior College.

Jessica has been working as a civil engineer for over eleven years both in California and internationally. Her experience consists of site design, grading and drainage, roadway design, erosion and sediment control, rainwater catchment, flood studies, creek restoration, and stormwater mitigation across a wide variety of projects including residential and commercial development, wineries and vineyards, schools, and public parks. She has been managing, designing, and implementing projects in Sonoma County for the past six years.  At the RCD, Jessica manages and designs a multitude of projects requiring professional engineering design and expertise.  Jessica is originally from Ukiah, California and has a B.S. in Civil Engineering from Cal Poly San Luis Obispo, with a focus in Water Resources and a Minor in Ethnic Studies.  She is a licensed Civil Engineer in the State of California.  Jessica is an active volunteer with Engineers Without Borders – Sonoma County Professional Chapter and is the Vice President of Local Projects.

Keith has been active in agriculture for over thirty years as a producer and advocate of sustainable agriculture. His expertise includes water use efficiency and management, farm management, soil health, hedgerow design and implementation, and grower outreach and education. At the RCD, Keith assists growers to evaluate irrigation system performance, and improve irrigation scheduling. Keith helps promote vineyard soil health by organizing workshops, writing articles, developing carbon farm plans, conducting soil health tests and running a research project to investigate the impact of different tillage practices on soil health and moisture availability. He also works with growers to prioritize multiple conservation goals through LandSmart Plans. Keith graduated from the University of California, Santa Cruz in 1990 with a B.A. in Environmental Studies, emphasizing agricultural ecology.

Katie has over six years’ experience in the biology field focused on fisheries and wildlife. Her experience ranges from working with marine mammals and marine ecology, to her main focus of fisheries biology. In the fisheries field her experience ranges in salmonid field and hatchery work as well as watershed education, permitting, watershed cartography, and salmonid surveys and habitat monitoring. At the RCD, Katie’s work is focused on assisting with the suite of LandSmart programming: Planning, On-the-Ground projects, Water Resources and Education. Katie earned her B.S. in Biology with a concentration in Ecology and Evolutionary from Sonoma State University. Her senior thesis at Sonoma State focused on the effects of precipitation and temperature on Tule Elk population growth and decrease in the Point Reyes National Seashore.

As Program Assistant, Shannon provides support for all RCD LandSmart program areas, in pursuit of multiple resource goals such as water quality, drought and fire resilience, soil heath, and climate-beneficial farming. Shannon first discovered her passion for conservation in high school while volunteering at the Monterey Bay Aquarium. She further explored biodiversity and ecology while studying science at Cal Poly San Luis Obispo and interning at Sonoma Ag + Open Space. Her research throughout college centered on optimizing cultivation of microalgae for biofuels and animal feed, and her senior project investigated the applications of algae and other microbes in the biological treatment of dairy wastewater. Shannon recently graduated from Cal Poly with a B.S. in Biological Sciences and a minor in Spanish. She was born and raised in Santa Rosa. 

Kari has over twelve years’ experience in the field of water quality that has included reviewing water quality certification applications for the North Coast Regional Water Quality Control Board and investigating underground storage tank sites for an environmental consulting company. Kari has experience in stormwater permitting and compliance on construction and industrial facilities as well as conducting environmental assessments on ranchland and open space properties. Graduating with a bachelor’s degree in Environmental Studies from Sonoma State University, Kari also earned a Master of Science in Environmental Management at the University of San Francisco. At the RCD, Kari’s work is focused on LandSmart™ Planning and  LandSmart™ On-the-Ground projects within the Laguna de Santa Rosa watershed, with an emphasis on dairies, livestock and water quality offsets/trading.

Jacob is an AmeriCorps Member, serving through a new initiative Grizzly Corps, working to increase climate resiliency and support implementation of regenerative agriculture practices among Sonoma RCD partners. He holds a B.S. in Environmental Science from Evergreen State College in Olympia, WA where interdisciplinary learning allowed him to research agricultural soils, and study botany, mycology, and ecology. Jacob combines theses skills with five years of experience working on diversified organic farms with both produce and livestock.