Academic Credentials
  • M.S., Fishery Management, Frostburg State University, 1982
  • B.S., Biology, York College of Pennsylvania, 1979
  • A.S., Chemistry, York College of Pennsylvania, 1978
Licenses & Certifications
  • 40-Hour Hazardous Waste Operation and Emergency Response Certification (HAZWOPER)
  • Board Certified by the Environmental Scientists Board of American Academy of Environmental Engineers and Scientists
Professional Honors
  • Executive Education Certification, University of Pennsylvania, Wharton School of Business; Philadelphia, Pennsylvania; 2011 - Essentials of Management; 2005-2006; Implementing Strategy; 2006; Leading and Influencing People; 2010; Strategic Persuasion Workshop: The Art and Science of Selling Ideas; 2011
  • Executive Education, Harvard Business School; Boston, Massachusetts; 2008 - Leading Professional Service Firms
  • Professional Recognition
  • American Academy of Environmental Scientists Board of American Academy of Environmental Engineers and Scientists (AAEES), Environmental Committee, 2016 – Present
  • Presidential Award – SETAC, 2021, 2019, 2018, 2015, 2011, 2004, 2001
  • SETAC Exceptional Paper Award – June 2020. Paper title “Scientific Integrity Issues in Environmental Toxicology and Chemistry: Improving Research Reproducibility, Credibility, and Transparency.”
  • Co-Editor-in-Chief, SETAC Globe (monthly international electronic magazine of the Society of Environmental Toxicology and Chemistry), 2014 – 2020
  • SETAC Fellow – November 2015
  • SETAC International Award, Herb Ward Excellence in Service Award, 2011
  • Industrial Chemical Advisory Council, South-Central Pennsylvania, 2002 – Present; Vice-Chairman, 2007–2010; Chairman, 2011 – 2020; Co-Chairman, 2021 – present; advisory committee member.
  • Society of Environmental Toxicology and Chemistry – SETAC World Council (World Board of Directors), 2007 – 2014 and 2018 – 2023; SETAC World Council, Vice President, 2012; President, 2013; Immediate Past President, 2014; Secretary/Treasurer, 2018 – 2023; North America Board of Director, 2004 – 2011 and North America Executive Committee, 2006 – 2011, SETAC – North America-Secretary/Treasurer, 2007 – 2008; North America – Vice President, 2009; North America – President, 2010; North America Immediate Past President, 2011; North America – Finance Committee, 2006 – 2015; World Council – Finance Committee, 2007 – Present; Global Communication Committee – Chairman, 2014 – 2020
  • SETAC North America Endowment Trustee, 2007 – Present
  • Standard Methods Committee and Joint Task Group Member, Standard Methods for the Examination of Water and Wastewater, American Public Health Association, 1985 – 2014
  • Meeting Chairman for the Gulf Oil Spill, Focus Topic Meeting, SETAC, Pensacola Beach, Florida, April 2011
  • Maryland Academy of Science, Standing Science Committee and Young Scientist Award Committee, 2007 – 2009
  • Delegate to “Pellston Workshop” on Biological Field Sampling: In-situ assessments, Portland, OR, November 2006
  • Meeting Chairman for the 26th Annual Meeting of the SETAC, Baltimore, MD, November 2005
  • Chairman of the Awards and Fellowship Subcommittee – SETAC, 2003 – 2006
  • Member of the SETAC Board of Director’s Standing Program Committee, 2001 – 2003
  • Meeting Chairman 22nd Annual Meeting of the SETAC, Baltimore, MD, November 2001
  • Elected to Editorial Board, Environmental Toxicology and Chemistry, 1998 – 2002
  • Awards Committee—SETAC Founders Award, SETAC/EA Jeffrey Black Award, ACC Young Researchers Award, Procter and Gamble Pre-doctoral Award, ICC Significant Achievement Award and ICA/Chris Lee Award for Metals Research, SETAC, 1998 –2012
Professional Affiliations
  • American Academy of Environment Engineers and Scientists (AAEES)
  • American Bar Association (ABA), Associate Member
  • American Chemistry Society (ACS)
  • • Environmental Science Division
  • Chemical Industry Advisory Council
  • • Co-chairman CIAC
  • International Society of Arboriculture (ISA)
  • Society of Environmental Toxicology and Chemistry (SETAC)
  • • SETAC World Council Past President
  • • North America Past President
  • • SETAC-North America Past Treasurer
  • • SETAC-North America and SETAC World Council (SWC) Board of Directors
  • - SWC Past Treasurer
  • • SETAC-Endowment (Trustee)
  • • Sediment Interest Group (SWC)
  • • Metals Interest Group (SWC)
  • - Aquatic Toxicity Testing Interest Group (SWC) – Steering Committee
  • Society of Toxicology (SOT)
  • University of Michigan, Water Center-Advisory Council

Mr. William Goodfellow is a Principal Scientist and the Director of Exponent's Ecological and Biological Sciences practice. He is a Board-Certified Environmental Scientist with special emphasis in Environmental Toxicology.

Mr. Goodfellow has more than 35 years of experience in environmental toxicology and causal effect assessments. His technical experience includes environmental assessment of chemical and biological contaminants in air, surface water, groundwater, soil and sediment, and their toxicological risk associated with potential contaminants of concern; performance of environmental compliance assessments and audits; design and performance of Toxicity Reduction Evaluations (TREs) for municipal and industrial discharges; assisting with treatability assessments of contaminated sediments, soils, and wastewater; researching and writing technical documents on federal and state water quality criteria, regulatory policies and other water pollution control issues; and conceptual and experimental evaluations on the toxicity, fate, and effects of chemicals in aquatic and terrestrial ecosystems; assessment of environmental damage resulting from point- and non-point-source discharge; and assessment and remediation of potentially toxic sediment and dredge materials.

Mr. Goodfellow has considerable experience in addressing impacts from physical and chemical stressors such as metals, mercury and organomercury, inorganic salts, dioxin/furans, PCBs, PFAS, PAHs, other chlorinated organics, solvents (TCE, PCE), 6PPD, microplastics, munitions, pesticides/herbicides, surfactants, nutrients, ammonia, dissolved oxygen, pH, temperature, and habitat changes. Many of his projects involve aspects of historic reconstruction of chemical releases, divisibility and apportionment, and injury assessment. His projects involve regulatory drivers including Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), Resource Conservation and Recovery Act (RCRA), National Environmental Policy Act (NEPA), Clean Water Act (CWA), NPDES, Toxic Substances Control Act (TSCA), Endangered Species Act (ESA) and the respective state implementations of these federal initiatives as well as similar initiatives in other countries. Mr. Goodfellow has extensive experience in development, submission, review, and auditing of environmental permits for aquatic discharges and land-use activities.

He has considerable experience in addressing agriculture and land-use management issues through ecological assessments of flora and fauna populations. Mr. Goodfellow's experience includes issues related to agricultural production and farming practices for crops such as rice, sugar cane, strawberry, grapes, cotton, corn, wheat, soybean, beans, peas, pepper, potatoes, tomatoes, tree nuts, shrubs, and turf as well as cattle, dairy, swine, poultry, fish, and shellfish.  He also has extensive experience in addressing nutrient and manure management issues, fertilizer production, land application of biosolids, residuals, and fertilizers, invasive species, and genetically modified organisms (GMO). Mr. Goodfellow has experience in pest management and control practices as well as addressing nuisance pests and animals in housing and dormitory situations.

Mr. Goodfellow is an internationally recognized expert in environmental assessment, toxicology, and TRE technology.  He is a Past President of the international professional society, Society of Environmental Toxicology and Chemistry and a SETAC Fellow. He is an experienced consulting and testifying expert on a range of legal matters in civil and criminal actions involving environmental claims; spills, NRDA, remediation and insurance cost recovery; toxic tort; agricultural issues; and standard of care. Mr. Goodfellow has served on peer-review panels, advisory boards, task forces, and editorial committees for natural resources, environmental assessment, toxicology, and TRE issues, as well as being widely published.