Emerging Contaminants Short Course Speakers


Susan T. Glassmeyer, Ph.D. 

Dr. Susan T. Glassmeyer is a research chemist in the US Environmental Protection Agency’s Office of Research Development. Dr. Glassmeyer earned a Bachelor of Science in chemistry from Xavier University, and a Master of Science in Environmental Science and Doctor of Philosophy degrees from Indiana University.  In her 20 years with the USEPA, Dr. Glassmeyer’s research is focused on contaminants of emerging concern (CECs), both chemicals such as pharmaceuticals as well as microorganisms, in the water cycle. She has coordinated several projects examining the occurrence, fate and transport of CECs in wastewater, surface water, ground water and drinking water.

Sarah Yang, Ph.D.

Dr. Sarah Yang is the Groundwater Toxicologist with the Wisconsin Department of Health Services. Her job duties include developing recommendations for groundwater standards, conducting human health risk assessment activities and conducting toxicological surveillance activities relating to health outcomes and chemical exposures. Sarah started at DHS in October 2017. Before that, she was an environmental toxicologist in the Water Quality Bureau for the Wisconsin Department of Natural Resources. Her work at the DNR focused on policy development related to water quality standards. Sarah holds a doctoral degree in Molecular and Environmental Toxicology from the University of Wisconsin – Madison.

Nathan Eklund

Nathan Eklund, PMP

Nathan Eklund, PMP is in his eighth year as the Program Manager for the Pace Analytical Persistent Organic Pollutants (POPs) Laboratory located in Minneapolis, Minnesota. The POPs Lab is part of the Specialty Analytical Services (SAS) Group at Pace Analytical. The POPs Laboratory specializes in the following analysis: PFAS, dioxin/furans, PCB congeners, PBDEs, high-resolution pesticides, and alkylated PAHs. Mr. Eklund has a Bachelor of Science degree in hydrogeology and has over 22 years of professional experience as a program manager, project manager, and hydrogeologist for the environmental consulting and environmental testing industries. Mr. Eklund’s technical experience spans across all environmental disciplines including: site investigation and remediation, water resources, environmental management information systems, geophysical munitions response, compliance, plans and permitting, and site assessments.

John Kelly, Ph.D. 

Dr. John Kelly is a professor in the Department of Biology at Loyola University Chicago. Dr. Kelly received his Bachelors Degree in Biology from Dartmouth College in 1990. He received his Master's Degree in 1995 and his Ph.D. in 1998, both from Rutgers University. From 1998 to 2001, Dr. Kelly was a post-doctoral fellow in the Department of Civil and Environmental Engineering at Northwestern University, and in 2001 he joined the faculty at Loyola. Dr. Kelly’s research examines the impacts of human induced ecosystem changes on microbial communities, with a special focus on emerging contaminants in urban freshwater systems, including pharmaceuticals and personal care products, engineered nanomaterials, and microplastics.

Tanja Rauch-Williams, Ph.D.

Dr. Tanja Rauch-Williams serves as Carollo's Wastewater Innovation Leadand Principal Technologist with more than 20 years of experience in wastewater treatment, water reuse and applied research. Her work has focuses on wastewater treatment optimization for biological nutrient removal and resource recovery, energy optimization, and trace organic removal.

Tanja is Vice-chair of WEF's Publication subcommittee of the municipal resource recovery design committee, Chair of the Rocky Mountain Innovative Water Technologies Committee, and local affiliate of the Leaders Innovation Forum for Technologies (LIFT).

John E. Tobiason, Ph.D., P.E., BCEE

Dr. John E. Tobiason is Professor of Civil and Environmental Engineering at the University of Massachusetts at Amherst where he has been a member of the faculty since 1987. He earned his BS in Civil Engineering from the University of New Hampshire (1976) and MS in Environmental Engineering from the University of North Carolina at Chapel Hill (1979). He then worked as a consulting engineer from 1979 to 1983 and earned his Ph.D. in Environmental Engineering from the Johns Hopkins University (1987). Dr. Tobiason has nearly 40 years of research, teaching and consulting experience in environmental engineering, mostly related to drinking water supply, treatment and distribution, with a focus on coagulation, oxidation, dissolved air flotation, media and membrane filtration, and other physicochemical processes for drinking water treatment. Dr. Tobiason is a past President of the Association of Environmental Engineering and Science Professors and past Chair of the AWWA Water Science Research Division Board of Trustees. He is a past member of the Journal Editorial Board for the Journal American Water Works Association. Dr. Tobiason is a registered Professional Engineer (NH) and is a Board Certified Environmental Engineer by the American Academy of Environmental Engineers and Scientists (AAEES).

Joe Heffron, Ph. D.

Dr. Joe Heffron is a postdoctoral fellow at Marquette University researching virus structure and ecology in engineered systems. Joe received his bachelor's degree in Environmental Science and Policy from Drake University in Des Moines, Iowa. After a decade working in chemical research, environmental outreach and waste management, he earned a Ph.D. in Civil Engineering from Marquette, which he completed last May.


Nicholas Niemuth

Nicholas’ Ph.D. work in Dr. Rebecca Klaper’s lab at UW-Milwaukee is focused on determining the molecular mechanisms of nanoparticle toxicity as environmental contaminants using the midge species Chironomus riparius as a model for sediment-dwelling organisms. His work is part of the Center for Sustainable Nanotechnology, a National Science Foundation-funded Center for Chemical Innovation that has the goal of facilitating nanoparticle redesign through a mechanistic understanding of their interaction with biological systems. His academic background includes a BS in biochemistry (UW-Madison), an MS in molecular biology (University of Michigan), and 4 years as lab manager in Dr. Klaper’s lab at the UW-Milwaukee School of Freshwater Sciences. During his time as lab manager he investigated the impacts of wastewater pharmaceuticals on model aquatic species Pimephales promelas (fathead minnow).

Mark Borchardt, Ph.D.

Dr. Mark Borchardt is a Research Microbiologist for the USDA – Agricultural Research Service and Program Leader for the Laboratory for Infectious Disease and the Environment, US Geological Survey, Upper Midwest Water Science Center. Dr. Borchardt’s expertise is on the measurement, fate, transport and health effects of human and agricultural zoonotic pathogens in the environment. Recently, he received the Dr. John L. Leal award from the American Water Works Association for his work on improving water quality and protecting public health in the United States.

Scott Grieco, Ph.D., P.E.

Dr. Grieco is a Senior Technologist and Global Practice Leader for Emerging Contaminants Treatment with Jacobs.  His area of expertise is treatment of organic and inorganic persistent environmental compounds. He has over 28 years of experience in investigation, treatability testing, system evaluations, process design, and process optimization. Dr. Grieco actively engaged with projects related to the investigation, treatability, and treatment of PFAS, including landfill leachate, impacted groundwater, drinking water, and wastewater.   He has a BS in Chemical Engineering, MS in Environmental Engineering, and PhD in Bioprocess Engineering and is a registered professional engineer licensed in New York.  He also serves as an Adjunct Associate Professor at SUNY College of Environmental Science & Forestry and is a frequent guest lecturer at both SUNY ESF and Syracuse University.