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William T. Stringfellow

Director, Ecological Engineering Research Program

Environmental Staff Engineer

Building 084, Room 0132

M/S 74R316C

Phone: 510-486-7903

Fax: 510-486-7152

wstringfellow@lbl.gov

Curriculum Vitae

  • Education
  • Experience
  • Awards
  • Professional Affiliations
  • Boards & Committees
  • Scholarly Service
  • Professional Activities

Biography

William T. Stringfellow, Ph.D., is a Professor and Director of the Ecological Engineering Research Program at the School of Engineering & Computer Science at the University of the Pacific in Stockton, CA.  He also has a joint appointment with the Geochemistry Department, Earth & Environmental Sciences Area at Berkeley Lab, CA. He received his B. S. in Environmental Health from the University of Georgia (Athens, GA) in 1980 and his Master’s Degree in Microbial Physiology and Aquatic Ecology from Virginia Tech (Blacksburg, VA) in 1984. He received his Ph.D. in Environmental Sciences and Engineering from the University of North Carolina at Chapel Hill in 1994 and worked as a Post-Doctoral Fellow in the Civil and Environmental Engineering Department at the University of California at Berkeley.

Dr. Stringfellow is the first author on over 50 journal publications, has been the lead author on numerous government reports, and has made hundreds of presentations on the subjects of water quality, water treatment, and the microbiology of engineered systems.  He has over 35 years research and consulting experience in wastewater treatment and management in both the US and Europe.  Dr. Stringfellow’s research interests include treatment and management of agricultural and industrial wastes. On-going projects include an extensive examination of water and chemical use during oil and gas development and the treatment and reuse of oil-field wastewater. Dr. Stringfellow is currently a member of the Food Safety Advisory Panel examining the beneficial reuse of produced water for irrigation.

Additional Websites

  • LinkedIn
  • Publons (ResearcherID)
  • ResearchGate
  • ORCID
  • Scopus

Research Interests

The major focus of my research is the study of environmental biokinetics. Microbial activity in both natural and engineered systems is dominated by the balance between growth and decay (cell death). In an open system, the state of the microbial community is determined by the physical and chemical conditions of the environment and is rarely, if ever, limited by availability of microorganisms. The microorganism will grow until the limiting condition is met, whether it is nutrient availability, energy supply, toxicity, or physical parameters such as available surface for attachment or washout conditions.

In engineered systems, the parameters controlling microbial activity can typically be manipulated. The condition of the system is a balance between the inputs and the standing microbial biomass in the system. This balance determines the output from the system. For example, in wastewater treatment, the system is typically maintained in a carbon-limited condition (low carbon-mass to biomass ratio) so that the output (effluent) is carbon free. How the system balances over time and responds to changing conditions is a function of the kinetic relationship between the microbial biomass, the system environment, and the growth limiting condition. Experimental techniques and modeling are used to determine fundamental kinetic properties of microorganisms and relate those properties to engineering operations with the purpose of achieving specific environmental objectives.

My current research is focused on biokinetic issues related to achieving water quality management objectives, with a regional focus on the San Joaquin River Basin in the California Central Valley. Water discharged from non-point sources, particularly agricultural areas and wetlands, are being regulated for the first time under a variety of programs, including basin wide management plans referred to as total maximum daily load (TMDL) programs. On-going fundamental and applied studies examine algal growth in the San Joaquin River and tributaries; the biological production of organic carbon in wetlands and agricultural drains; and the environmental fate of pesticides in agricultural ponds and managed wetlands.

Education

  • Ph. D. Environmental Sciences and Engineering (supporting program: Microbial Physiology and Genetics), University of North Carolina at Chapel Hill, 1994
  • M. S. Microbiology (minor: Aquatic Ecology), Virginia Polytechnic Institute and State University, 1984
  • B. S. Environmental Health,, University of Georgia, 1980

Experience

  • Environmental Engineer, Lawrence Berkeley National Laboratory, Energy Geosciences Division, Earth & Environmental Sciences Area, Berkeley, CA, 1996-Present
  • Professor Emeritus, University of the Pacific, School of Engineering & Computer Science, Stockton, CA, 2018-Present
  • Professor & Director, EERP, University of the Pacific, Ecological Engineering Research Program, School of Engineering & Computer Science, Stockton, CA, 2009-2018
  • Associate Professor & Director, EERP, University of the Pacific, Ecological Engineering Research Program, School of Engineering & Computer Science, Stockton, CA, 2004-2009
  • Visiting Professor, University of California, Berkeley, Department of Civil and Environmental Engineering, Berkeley, CA, 2007
  • Postdoctoral Researcher, University of California, Berkeley, Department of Civil and Environmental Engineering, Berkeley, CA, 1994-1996
  • Graduate Research Assistant (Ph.D. Candidate), University of North Carolina at Chapel Hill, Department of Environmental Sciences & Engineering, Chapel Hill, NC, 1990-1994
  • Stagiaire (Visiting Researcher), Institut Pasteur, Departement d'Ecologie, Paris, France, 1988-1989
  • Senior Research Microbiologist, Sybron Chemicals, Inc., Salem Research Facility, Salem, VA, 1983-1988
  • Graduate Research & Teaching Assistant (M.S. Candidate), Virginia Polytechnic Institute and State University, Department of Microbiology and the Center for Aquatic, Ecology, Blacksburg, VA, 1981-1983
  • Hazardous Waste Site Investigator, Ecology and Environment, Inc., Decatur, GA, 1980-1981

Awards

  • Spot Award for Outstanding Work, SB4 Scientific Investigation of Hydraulic Fracturing in California, Lawrence Berkeley National Laboratory, 2015
  • Spot Award for Outstanding Work, Environmental Impacts of Hydraulic Fracturing on Federal (BLM) Lands in California, Lawrence Berkeley National Laboratory, 2014
  • Outstanding Mentor Award, Department of Energy, 2002
  • Outstanding Mentor Award, Lawrence Berkeley National Laboratory, 2001

Professional Affiliations

  • International Water Association
  • American Chemical Society
  • American Ecological Engineering Society
  • American Geophysical Union
  • Water Environment Federation
  • Association of Environmental Engineering & Science Professors (Inactive)
  • American Society of Agricultural & Biological Engineers (Inactive)
  • Ecological Society of America (Inactive)
  • American Society of Agronomy (Inactive)
  • Society for Environmental Toxicology & Chemistry (Inactive)

Advisory Boards, Committees, and Councils

  • Secretary, Management Committee, Watershed & River Basin Management Specialist Committee, International Water Association, 2014-Present
  • Member, California Council on Science and Technology (CCST) Steering Committee, Evaluation of the utility of SB 1281 data collection for understanding the water cycle for oil & gas production in California, 2019
  • Expert Advisor, Food Safety/Oil Field Wastewater Reuse Expert Panel, Central Valley Regional Water Quality Control Board, Rancho Cordova, CA, 2016-2017
  • Member, Water & Energy Project Executive Council, Lawrence Berkeley National Laboratory, 2015-Present
  • Member, Management Committee, Watershed & River Basin Management Specialist Committee, International Water Association, 2011-2014
  • Member, San Joaquin River Dissolved Oxygen Total Maximum Daily Load Technical Advisory Committee, 2000-2009
  • Member, Real-time Salt and Nutrient Drainage Load Reduction Strategies Technical Advisory Committee, 2005-2009
  • Member, Earth Sciences Division Environmental Health and Safety Committee, 1999-2004
  • Member, Lawrence Berkeley National Laboratory Biological Safety Committee, 2002-2003

Scholarly Service

  • Reviewer, Alfred P. Sloan Foundation, Energy & Environment Program, 2016-Present
  • Reviewer, Environmental Pollution, 2016-Present
  • Reviewer, Canadian Journal of Civil Engineering, 2016-Present
  • Reviewer, Journal of Coastal Research, 2014-Present
  • Reviewer, University of the Pacific Seed Grant Program, 2011-Present
  • Reviewer, Journal of Environmental Management, 2009-Present
  • Reviewer, Agriculture Water Management, 2009-Present
  • Editor, Journal Editorial Board, Clean Technology & Environmental Policy, 2007-Present
  • Reviewer, Grant Program, US Army Office of Research, 2006-Present
  • Reviewer, Clean Technology & Environmental Policy, 2005-Present
  • Reviewer, American Geophysical Union Books, 2001-Present
  • Reviewer, Environmental Science & Technology, 2000-Present
  • Reviewer, Water Science & Technology, 2000-Present
  • Reviewer, Water Environment Research, 1995-Present
  • Reviewer, African Journal of Pure & Applied Chemistry, 2012
  • Reviewer, Grant Program, Oregon Sea Grant, 2007-2010
  • Reviewer, Kuwait Journal of Science & Engineering, 2007
  • Reviewer, Bureau of Reclamation's Science and Technology Program, 2004-2009
  • Reviewer, Waste Management Journal, 2001-2012
  • Reviewer, Applied Biochemistry & Biotechnology, 2001-2009
  • Reviewer, Bioremediation Journal, 1998-2004

Professional Activities

  • Graduate Research Advisor, Department of Civil & Environmental Engineering, University of California Berkeley, 1999-2013
  • Undergraduate Research Advisor, Center for Science & Engineering Education, US Department of Energy, 1998-Present
  • Undergraduate Research Advisor, Environmental Sciences Program, University of California Berkeley, 1997-Present
  • Visiting Professor, Environmental Microbiology, University of California, Berkeley, 2007
  • Adjunct Professor, Hydrologic Analysis and Design, University of the Pacific, 2006
  • Adjunct Professor, Introduction to Environmental Engineering, School of Engineering & Computer Science, University of the Pacific, 2006
  • Lecturer, Water Resources, Department of Civil & Environmental Engineering, University of California Berkeley, 2005
  • Lecturer, Microbiology for Engineers, Department of Civil & Environmental Engineering, University of California Berkeley, 2003-2004
  • Bioremediation and Phytoremediation of Other Contaminants, International Containment and Remediation Technology Conference, Orlando, FL, 2001
  • Natural Attenuation of MTBE, In-Situ and On-Site Bioremediation Sixth International Symposium, San Diego, CA, 2001
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