Faculty & Staff

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Harry Allen

Adjunct Professor

Harry Allen is a Federal On-Scene Coordinator (OSC) and Chief of EPA Region 9's Emergency Response Section. His primary focus is readiness for environmental assessment missions associated with large-scale disasters, and data management and analysis in emergency response settings, ranging from residential spills to presidential declared disasters.

Tel:(415) 422-5445
tlbenning@usfca.edu

Tracy Benning

Associate Professor

Dr. Benning's research interests include landscape ecology, biogeochemistry, urban ecology, and resource conservation and management. Her recent research focuses on the application of remote sensing GIS technologies in the study of tropical rainforests in Hawaii and riparian corridors in African savanna.

Tel:(415) 422-5702
callaway@usfca.edu

John Callaway

Professor

Dr. Callaway's research focuses on wetland plant and soil ecology, restoration ecology, exotic species invasions, sediment processes, and potential impacts of sea-level rise. His recent work has focused on wetland restoration in San Francisco Bay and the Tijuana Estuary on the border of Mexico and California.

Tel:(415) 422 - 4712
gccoffman@usfca.edu

Gretchen Coffman

Assistant Professor

Dr. Coffman is a restoration ecologist with research projects on wetland and riparian restoration in Mediterranean-­‐type and tropical climates in coastal southern California, the San Francisco Bay Area, the Central Valley of California, and Southeast Asia. She teaches undergraduate and graduate courses in applied ecology, environmental science, restoration ecology, wetland science, and ecosystem ecology, all involving labs and field studies. 

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Brad Drda

Adjunct Professor

Brad Drda is the environmental manager for Recology San Francisco. With over 20 years of solid waste industry experience, Mr. Drda is responsible for hazardous waste pollution prevention programs at San Francisco's primary recycling and waste handling facilities. He also manages energy efficiency and renewable power projects at Recology San Francisco.

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Gary Floyd

Adjunct Professor

Gary Floyd, an MSEM alumnus, is Vice President of Tetra Tech, Inc.'s San Francisco operations and an Environmental Scientist with a background in natural resources and hazardous waste management, includingenvironmental compliance support to agencies, industry, and private developers.

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Aaron Frank

Adjunct Professor

Aaron Frank's areas of interest include Environmental Law, Environmental Ethics, and Wildlife Policy.  He is the Founder and President of the California Wildlife Center and sits on the Board of the Arava Institute for Environmental Studies. In 2013, Aaron won a USF Distinguished Teaching Award.  

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Kathleen Jennings

Adjunct Professor

Dr. Jennings' background is in water quality, human and ecological risk assessment, and wildlife ecology. She is trained in emergency response for hazardous materials releases and natural resource assessments for shoreline and biological injury.

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Gordon Johnson

Adjunct Professor

Gordon Johnson is an Environmental Engineer for the Shell Oil Refinery. He has extensive experience in energy resources management including renewable energy program development, as well as drinking water and industrial wastewater treatment, groundwater and soil remediation, air pollution compliance and hazardous waste compliance.

Tel:(415) 422-2831
karentzd@usfca.edu

Deneb Karentz

Professor

Dr. Karentz is a marine biologist with expertise in ultraviolet photobiology and plankton ecology. Much of her work has focused on the physiological and ecological consequences of Antarctic ozone depletion.

Tel:(415) 422-5842
karney@usfca.edu

William Karney

Professor

William L. Karney received his Ph.D. in Organic Chemistry from the University of California, Los Angeles.  Dr. Karney's teaching interests lie primarily in the areas of environmental chemistry and organic chemistry.  His research involves the use of computational chemistry to study organic reaction mechanisms, particularly the formation and rearrangements of polycyclic aromatic hydrocarbons.

Tel:(415) 422-5730
lendvay@usfca.edu

John Lendvay

Associate Professor

John M. Lendvay received his Ph.D. in Environmental Engineering from the University of Michigan. Dr. Lendvay's research interests focus primarily on community assessment of regional water quality.

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Cindy Lowney

Adjunct Professor

Dr. Lowney works as a Senior Hydraulic Engineer with Resource Management Associates, involved in ongoing analysis of Army Corps of Engineer projects.  Her specialties include temperature and floodplain dynamics of the San Joaquin and Sacramento Rivers.  Dr. Lowney instructs MSEM Master's Projects, as well as water resources and environmental engineering.

Tel:415-422-4332
aluengen@usfca.edu

Allison Luengen

Assistant Professor

Dr. Luengen's research at USF focuses on the cycling and bioavailability of trace metals. She frequently works in the San Francisco Bay and Delta, an estuary where there are elevated concentrations of many metals, including mercury.

Tel:(415) 422-5895
macdonaldt@usfca.edu

Thomas MacDonald

Associate Professor

Tom MacDonald received his Ph.D. from Stanford University. Dr. MacDonald's research focuses on designing computer simulations of problems of pollution migration and using the results to engineer systems to contain pollutants and prevent further spreading. He has also published his research on the neural network application for bioremediation. Recently he has co-authored papers dealing with environmental risk and the precautionary principle.

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Matt Macko

Adjunct Professor

Matt Macko is a LEED Accredited Professional (O&M), RESNET Energy Rater, Certified Sustainable Building Advisor, Certified Green Building Professional, Certified Energy Plans Examiner and Certified Energy Manager.  He specializes in Life Cycle Costing in construction and green building analysis.

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Amy Merrill

Adjunct Professor

Dr. Merrill is a senior riparian ecologist with Stillwater Sciences, working on restoration planning and design, and watershed management. Her expertise in riparian and wetland systems includes soil and ground water biogeochemistry, plant-soil interactions, and plant community composition in Sierra meadows and riparian systems, and in San Francisco-San Joaquin Delta and Sacramento River systems.

Tel:(415) 422-5986
sbohshita@usfca.edu

Stephanie Ohshita

Associate Professor

Professor Ohshita works on energy-based solutions to multiple environmental problems-from local air pollution to global climate change-and combines engineering with tools from political economy and organizational analysis.  With a geographic focus on China, Japan, and the US, her research and teaching examine energy and carbon saving strategies; policy design and implementation; international cooperation; the diffusion of clean and efficient technology; emissions inventories; and risk management.

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Paul Craig Okamoto

Adjunct Professor

Paul Okamoto has committed his professional architectural career to designing buildings and neighborhoods in ways that optimize environmental and social conditions. With his San Francisco-based firm Okamoto Saijo Architecture, he designs affordable housing developments, community centers, custom passive solar residences, community-based neighborhood plans, all with an emphasis on sustainable design.

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Steven Ritchie

Adjunct Professor

Steven Ritchie specializes in water system planning, operations, and restoration.  He serves as assistant general manager of the San Francisco Public Utilities Commission, overseeing water, lands, and habitat-from Hetch Hetchy to city distribution. He also works with CALFED Bay-Delta Program, among others.

Tel:(415) 422-6380
robertsd@usfca.edu

Diane Roberts

Professor

Diane Roberts engages her students in discussions that address both honorable and unlawful corporate practices, ensuring her students carry a greater awareness of the importance of transparency with them into their future careers. Dr. Roberts is motivated by a deep concern for unethical financial reporting considering the potential for catastrophic events on the environment, community trust, and the global economy.

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Aviva Rossi

Adjunct Professor

Aviva Rossi is a MSEM graduate, field biologist, and project manager with 13 years of experience.  She has worked with research institutions, non-profit organizations, and consulting firms focusing on regulated species (sensitive or invasive) and habitats in the greater San Francisco Bay Area.  She has experience running successful field programs through vegetation and wildlife field surveys, habitat restoration, monitoring projects, and regulatory compliance work.

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Chris Ruehl

Adjunct Professor

Dr. Chris Ruehl works in the Research Division of the California Air Resources Board, studying the emissions of vehicles and off-road engines. His work has focused on both the human health and climate effects of atmospheric particulate matter. He also has experience in water quality, having studied nutrient cycling in streams draining agriculturally-impacted regions of California.

Tel:(415) 422-4316
dssaah@usfca.edu

David Saah

Associate Professor and Director of Geospatial Analysis Lab

Dr. Saah has been trained as an interdisciplinary environmental scientist with research interests in landscape ecology, ecosystem modeling, environmental accounting, remote sensing, and geographic information science (GIS). He has participated in research projects throughout California, Mexico, Hawaii and most recently, South Africa.

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Ana Sandoval

Adjunct Professor

Ana Sandoval is an Air Quality Program Manager at the Bay Area Air Quality Management District. Ana has been with the Air District since 2005, starting as an Environmental Planner, training local governments in greenhouse gas inventories, and now leading the Community Outreach team. Prior to joining the Air District, Ana worked as a strategic planner at VIA Metropolitan Transit in San Antonio.

Tel:(415) 422-5790
tssankalia@usfca.edu

Tanu Sankalia

Associate Professor

Tanu Sankalia received his Master of Urban Design from the University of California, Berkeley. Prof. Sankalia's research interests cover areas of architecture and urbanism from the local context of the San Francisco Bay Area to the global perspective of India. Current projects include a co-edited volume of essays, Urban Reinventions: San Francisco's Treasure Island, which examines future plans for Treasure Island in the context of global, large-scale land development, and against the backdrop of the island's seventy-year urban history.

Tel:415-422-4460
cischmidt@usfca.edu

Calla Schmidt

Assistant Professor

Calla Schmidt received a PhD in Earth Science from the University of California, Santa Cruz. Her research spans physical hydrology and biogeochemistry and aims to understand the connection between hydrology and the biogeochemical cycling of nutrients.

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Ken Schwarz

Adjunct Faculty

Ken Schwarz, Ph.D. is a founding Principal at Horizon Water and Environment.  He is a recognized expert in the fields of geomorphology, hydrology, and watershed management.  For over 20 years, he has directed complex projects throughout California involving erosion and sediment management, flood and stormwater management, stream maintenance and capital programs, land use planning, water rights, habitat conservation, and ecosystem restoration.  

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Laura Seidman

Adjunct Professor

Laura is a BPI certified Building Analyst, Envelope, Heating and Multifamily Professional. Using her Masters Degrees in Urban Design and Education as well as training in Baubiologie, building science and eco-consulting, Laura founded her own Design and Energy consulting company to complement her 25 year teaching career.  She is currently an active designer, building auditor, teacher, and Quality Assurance verifier working throughout the Bay Area and Central Valley.

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Fred Wellington

Adjunct Professor

Fred Wellington specializes in clean energy markets, greenhouse gas mitigation and environmental commodities at Navigant Consulting. Mr. Wellington works with a diverse range of clients including electric utilities, investment firms and corporations on renewable energy procurement and regulatory compliance, investment due diligence, greenhouse gas strategy, emissions trading and renewable energy credit (REC) markets. Prior to joining Navigant, Mr. Wellington led the environmental finance team at the World Resources Institute, and worked in investment banking as a Chartered Financial Analyst (CFA).

Tel:422-5987
mwinslow@usfca.edu

Maggie Winslow

Assistant Professor

Dr. Winslow specializes in ecological economics, macroeconomics, and managerial economics.  Her past research examined the relationship between economics growth, democracy and environmental quality. Her current research focuses on valuing ecosystem services and alternative economics.