Restoration Project Leader
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Brian joined PCI at the start of 2023 as a Restoration Project Leader. Brian is a California Licensed Landscape Architect who started his restoration career in the Mid-Atlantic region in the late 1990’s. In 2012 he and his family migrated to California and quickly put down roots in the North Bay. Brian’s experience includes restoring creeks of all sizes, floodplains, seasonal wetlands, vernal pools, riparian areas, oak woodlands and special status species habitat, but his passion lies in restoring all manner of habitats for steelhead, salmon and trout. When he’s not working, he can usually be found on a bike or a pair of skis, with a fishing rod in his hands, fixing something around the house, or dragging his wife and kids on an “adventure.”

Principal Environmental Planner
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Carrie is the PCI principal environmental planner at PCI. Her work focuses on CEQA/NEPA compliance and environmental permitting for a wide range of land management projects including watershed restoration projects, fish passage projects and both large- and small-infrastructure projects. Carrie specializes in the evaluation of environmental impacts in sensitive resource areas and is known for working with project designers, engineers, and resource agency staff to develop creative solutions to avoid impacts and enhance outcomes. She also serves as project manager for a number of PCI’s large projects.  When Carrie is not at work, she enjoys gardening, cooking, reading, and traveling.

Ecologist
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Celia is an ecologist who has spent her career working in a range of habitats including the Sonoran desert, estuaries along the Gulf of California, and northern California settings from the coast to the Sierra. Her work at PCI focuses on surveys for fish and wildlife, monitoring of wildland habitat restoration, vegetation mapping, biological resource assessment, wetland delineation, biological design support, construction monitoring and aquatic species rescue. Celia brings an open and inquisitive mindset to her work; she is always excited to explore and discover landscapes to protect, enhance and restore.

Principal Hydrologist
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Christopher Woltemade, PhD integrates hydrology, geomorphology, and spatial analysis in innovative ways that support watershed enhancement designs to benefit ecological systems and human needs. He has over 30 years of experience with stream and wetland restoration design, hydrologic modeling, geomorphic assessment, flood risk reduction, water quality management, salmonid recovery, and stormwater management. Christopher embraces a “one water” approach to comprehensive watershed management from headwaters to estuary. He thrives on data-driven scientific approaches to complex, multi-disciplinary problems that deliver innovative win-win solutions to clients and the broader public.

Ecologist
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Claire is an ecologist who joined the PCI team in 2021 after working on large-scale riparian restoration projects in the San Joaquin Valley of California. She brings her passion for restoration, native plant knowledge, and spatial analysis skills to the science team where she conducts vegetation and wildlife monitoring, natural resource assessments, and restoration planning and implementation. She is dedicated to protecting natural spaces, to benefit her local community of plants, wildlife, and people. When out of the office, you can often catch Claire on a hike with her dog Blue or experimenting with a new dessert recipe to share with her co-workers.

Landscape Architect
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Diana is a licensed landscape architect who has been a part of the design team at PCI since 2018. She is involved in a wide breadth of projects at PCI which include off-channel and in-stream salmonid habitat; fish passage; riparian, floodplain, and wetland restoration; biotechnical streambank stabilization; natural habitat ponds; erosion control; native species revegetation; habitat enhancement; rainwater catchment and water conservation; and public parks. Her passion lies in stream restoration and habitat enhancement, and she is actively pursuing and deepening her knowledge and experience in the environment restoration field. The skills she brings to her projects are, but not limited to, design, rendering, grading, native plant palettes and revegetation plans, and construction documentation. She is a Sonoma County native who grew up hiking through the redwoods and exploring the banks of the Russian River and its tributaries and feels at home on most project sites. When not working she is surfing, rock climbing, running, hiking, backpacking, cooking, reading and adventuring with her pup and partner. 

Landscape Designer
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Dorae joined PCI in 2025 as a Landscape Designer. With a background in ceramics and horticulture, she approaches landscape design as a creative and artistic act of environmental stewardship and community building, grounded in scientific and cultural understandings of place. Dorae received a Master of Landscape architecture from the University of Oregon, where her research focused on the salvage and reuse of landscape construction materials. Outside the office she spends her time gardening, hiking, and making pottery.

Assistant Engineer
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Ellen is an assistant engineer who joined the PCI team in 2021. She graduated from Oregon State University where she majored in Civil Engineering and Sustainability. This allowed her to combine her interests in engineering with her passion for the natural environment. Her work at PCI includes building hydraulic models for rivers and watersheds, drafting, and design. Ellen spends her free time cycling, hiking, and camping.

Landscape Architect
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Emily is a registered landscape architect on the design team at PCI. She participates in various projects, including regional park masterplans, feasibility studies, private estate and restoration planting plans. Working in the landscape design profession since 2004, Emily brings a diverse range of professional experience to her work that includes multi-family housing, water catchment and working with native plant palettes. In addition to landscape architecture, her multi-faceted background in art history, permaculture design and dance bring a unique perspective that integrates artistic elements with environmental considerations to create distinctive outdoor spaces. Outside of work, you can find her hiking, kayaking and spending time with her family and pup.

Biologist
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Erynn has 12 years of experience in biological research, surveys and assessments. Her work has included assisting with, designing, and leading field research and working on habitat restoration projects. She has experience in settings ranging from California to the Arctic to the Amazon, with numerous organisms including venomous snakes, small mammals, birds, and plants. Erynn brings a broad biological perspective to the science team at PCI where her work includes wildlife surveys, natural resource assessments, construction monitoring, assistance with aquatic species rescue and plant monitoring, and assistance with planning and implementation of habitat restoration projects. She is committed to protecting wildlife, land, and ecological processes so people can responsibly enjoy them for generations to come. On her off days, Erynn enjoys reading, creating, and exploring the outdoors with her rescued greyhound.

Assistant Engineer
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Fiona joined PCI in 2023 as an Assistant Engineer. She recently completed her Master of Science degree in Environmental Systems: Environmental Resources Engineering at Cal Poly Humboldt. During graduate school, she was a student researcher at the Arcata Marsh Research Institute, where she performed regular water quality analyses and pond/wetland surveying and led algal growth pilot projects. Her interdisciplinary thesis focused on quantifying the effectiveness of microplastic removal in natural treatment systems and the impact that microplastics have on sedimentary bacteria and associated nitrogen cycling. She is excited to continue developing her problem-solving and ecological skills at PCI.

Accountant
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Gina joined PCI in 2015. She brings 15 years of accounting experience. Gina processes payroll, oversees accounts payable and accounts receivable tasks, works with project managers for monthly billing and a variety of other accounting responsibilities. Outside the accounting world, she enjoys spending time with her kids and friends, cooking, baking, and traveling. 

Forester
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Harold is a Registered Professional Forester, Certified Professional Soil Erosion and Sediment Control Specialist. He has worked at PCI since 1988. His projects include design and oversight of wetland and riparian revegetation projects as well as erosion control projects, and the development of forestland stewardship plans. Harold is a waterman: surfer, kite surfer, stand up paddle boarder, snow boarder and plays key board in local rock band.

Website Administrator
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Jack is a design student at Parsons in NYC and serves as the remote website administrator for PCI. He manages digital content and helps keep things up to date. In his spare time Jack enjoys drawing, mountain biking and playing golf.

Civil Engineer
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Jasper is a civil engineer and a member of the design team. A Sonoma County native, Jasper joined PCI in 2005 after a high school internship. During his education and training as an engineer, he has worked as a journeyman construction worker and foreman, gaining practical experience and understanding of restoration projects. Jasper’s work includes surveying, construction cost estimates, construction planning and supervision, hydraulic modeling, engineering analysis, drafting and design. He has a passion for the outdoors and cooking. He’s also a rally car race car driver, and often spends his weekends at the race track.

Principal Ecologist
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Joan is PCI’s principal ecologist. She has worked on native plant research and restoration, and natural resource planning, since 1992. Her current focus is on assessment and planning for parks and preserves around the North Bay and North Coast, habitat restoration in settings from coastal wetlands to interior woodlands, and leading PCI’s team of ecologists and biologists. With practices like addressing climate change in revegetation designs, identifying processes that sustain biodiversity in preserves, and seeking ways to bring varied human interests and sensitive landscapes together to benefit both, Joan brings a broad ecological perspective and collaborative approach to her work. Joan loves spending her free time backpacking and exploring California’s diverse flora.

Hydrologist
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John is a hydrologist specializing in coastal and fluvial hydrology. He is experienced in data acquisition and has led multiple geomorphic, water quality, and biological monitoring projects. John has a background in riverine ecology and has provided field assistance in salmonid life-cycle monitoring and anadromous fisheries management studies. For his master’s thesis, he assessed the significance of physical habitat characteristics in describing macroinvertebrate assemblage structure in a small coastal stream to better understand the potential for riparian management to enhance lotic ecosystem function. In his spare time, John enjoys surfing, fishing, and camping.

Landscape Architect/Foreman
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Justin is a registered landscape architect and QSD/P. He has worked in the environmental restoration field since 1998, when volunteering for AmeriCorps brought him to California from his home state of Pennsylvania. His experience is in designing and managing natural resource conservation projects such as in-stream salmonid habitat enhancement, erosion control, stormwater management, rainwater catchment, water conservation, biotechnical stream stabilization, wetland and riparian enhancement, streamflow enhancement, and native species revegetation. From his time working at the Sonoma Resource Conservation District and American Farmland Trust, Justin gained experience in conservation easement development, landowner and partner outreach, partnership development, community group and advisory committee presentations, and writing and managing grants for projects such as streamflow enhancement, fish habitat, rainwater catchment, and fire recovery. Justin loves to fly fish and designs and carves duck decoys in his spare time.

Environmental Planner
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Kyle joined the PCI team in 2023.  He brings with him experience in local planning, having worked in the Planning and Building Department in the Town of Yountville for two years where he gained experience in residential and commercial development, created online permit application processes, and developed skills in program management. A drone pilot and hobbyist as well as a GIS buff, he is known for taking on challenging roles and responsibilities to expand his skill set and knowledge base while working closely alongside subject matter experts to fully leverage available support and develop quality deliverables. When Kyle isn’t tackling a new assignment, you might find him at the pickle ball courts, playing his guitars, or spending time with his family.

Principal Geomorphologist
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Lauren specializes in stream restoration science and design – overseeing projects from initial envisioning all the way through implementation. During her 20-year career she has focused on applying her knowledge of geomorphology, ecology, hydrology, and hydraulics to develop geomorphically sound and effective restoration projects that respect complex stakeholder needs. Lauren blends technical skills and strong critical thinking with a solution-oriented attitude and interest in collaboration. Since joining PCI in 2003, her projects have ranged from watershed assessments and management plans to flood reduction feasibility studies to salmonid habitat enhancement design. Lauren loves to travel with friends and hosting solar eclipse parties.

Administrative Assistant
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Lisa helps keep all aspects of PCI up and running, assisting the CEO and Financial Controller with various needs. She’s been a longtime Sonoma County resident who loves everything our county has to offer from hiking the beautiful trails to tasting the amazing wine and food created here. Her free time is spent with precious family, friends and her pup, Cleo.

Principal Civil Engineer
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Luke Walton, Principal Civil Engineer at PCI since 2007, brings a wealth of experience and a deep connection to the landscapes of Northern California. Growing up in the remote hills of coastal Sonoma County, Luke developed an early appreciation for natural ecosystems, which now informs his extensive work on stream restoration projects. His portfolio includes fish passage design, bank repair, habitat and Large Woody Debris enhancements, stream daylighting, dam removal, flood control and wetland design. Beyond ecological restoration, Lucas has also led the design of natural parks, trails, bridges, and parking lots for public access projects. His practical approach stems from hands-on experience as a construction foreman, equipment operator, and stream restoration specialist for various PCI projects. When he's not shaping landscapes, Lucas enjoys surfing and free diving along the rugged north coast or backpacking to explore remote streams with a fly rod in hand.

Financial Controller
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Nancy joined PCI in 2025 and has over 20 years of accounting experience.  Transitioning from the technology to the environmental /green industry has been one of her most rewarding career moves.

Nancy is a 4th generation Californian and comes from a family of wildland fire fighters and nature enthusiasts so has grown up experiencing, appreciating and respecting all aspects of nature.

After getting her fill of spreadsheets and finances, Nancy enjoys traveling, gardening, cooking and spending time with her kids, family and dog, Duke.

Environmental Planner
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Samantha joined the PCI team in 2023 as a Senior Environmental Planner. Having started her planning career in Sonoma County, Samantha brings almost a decade of local and regional planning experience throughout Northern California within the non-profit, private, and public sectors. Her experience includes CEQA/NEPA compliance, environmental permitting, community planning, and public policy. She is known for working on a variety of multi-disciplinary projects – alongside engineers, geologists, biologists, architects, local tribes, city and county planning staff, and resource agency staff in order to find the best solution to the problem at hand in a manner that takes into account social and ecological impacts. When she doesn’t have her head buried in a planning document, you can usually find Samantha lifting weights in her home gym, walking/hiking with her malamute-husky mix (preferably on “cooler days”), and traveling.

Landscape Architect
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Solange Guillaume is a senior landscape architect at PCI whose fascination with the interface between urban and ecological design has led her to a wide variety of public and private projects. Prior to PCI, Solange was a landscape architect in the public sector in San Francisco, designing urban spaces with ecological restoration and public access at their core, including the Twin Peaks Promenade, Ocean Beach Climate Change Adaptation Plan, Yosemite Creek, and McLaren Park. Her collaboration with community groups in San Francisco led to the development of the Sunset Boulevard Biodiversity Master Plan and established the construction of native plant pilot blocks on Sunset Boulevard. Solange has experience delivering projects from analysis and conceptual design through project construction, striving to bring designs that capture the elegance and nature of a space into being. Outside of work, Solange loves playing piano and singing in a local blues band and hiking and climbing with friends and family.

Staff Accountant
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Stella joined PCI in 2025 as a Staff Accountant, bringing eight years of civil accounting experience and dual certifications in bookkeeping and payroll. Known for her attention to detail, reliability, and collaborative mindset, Stella administers payroll, accounts payable, and constantly develops efficient processes to ensure accurate, organized, and timely information to support all areas of PCI. When she's not crunching numbers, Stella and her husband proudly support their two teenagers’ diverse pursuits - from the Sonoma Land Trust’s Conservation Council program to the Santa Rosa Symphony Youth Orchestra, Ballroom Dance, and more.

Founding Principal
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Steven brings over 35 years of experience in taking projects from a conversation all the way through to healthy, on-the-ground habitat. In recent years, his work has ranged from leading restoration of a 40-acre quarry in the Sierra foothills to on-site supervision of redwood log placement in Napa Creek to providing principal level leadership on many of PCI’s design and environmental compliance projects. He is adept at resolving complex permitting and constructibility issues and practiced at organizing effective teams. In his downtime, Steven likes to take long walks in the Willow Creek watershed and can always be found working on his property.

COO (Chief Observation Officer)

CTO (Chief Treat Officer)

Security

CMO (Chief Morale Officer)

Snack Technician II

Water Quality Specialist

Waste Management Inspector

Construction Supervisor

Excavation Specialist

NIT (Napper In Training)