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INSTRUCTOR:
Charles Rowney, Ph.D., P.Eng.
Brandon Steets, P.E.
Sponsored by ASCE Continuing Education and ASCE's Environmental & Water Resources Institute.
Purpose and Background
Protection of recreational beneficial uses is becoming one of the most costly and ubiquitous challenges for stormwater managers in the United States. Multi-tiered approaches, and in some cases multi-billion dollar implementation plans, have been developed to address fecal indicator bacteria (FIB) TMDLs. Due to its nature, FIB presents unique challenges. Recent advances in the state-of-the-practice (e.g., innovative stormwater planning tools) and the state-of-the-science (e.g., for source identification and risk assessment) have created opportunities for innovative and adaptive cost-saving approaches to the protection of recreational beneficial uses. This four-part series will probe those challenges and opportunities, based on the recent ASCE report, Pathogens in Urban Stormwater Systems.
This third webinar will focus on the state-of-the-practice fate and transport processes, data analysis methods, and modeling tools for evaluating (and guiding TMDL implementation activities for) FIB and pathogens in urban stormwater systems and their receiving waters.
Primary Discussion Topics
- Fluid transport mechanisms, including advective and dispersive flow
- Pathogens in the environment, including factors affecting removal and sources
- An introduction to multi-phase flow (sediment/water column partitioning)
- Available models and methods
- Practical examples of simulation results
- Common problems and pitfalls encountered in simulating pathogen movement in streams and water bodies
- Interpretation of results
Learning Outcomes
- Understand the factors affecting movement of pathogens from a source location to a point of interest
- Learn about some of the tools and methods available to simulate pathogen transport in receiving streams and waters
- Understand the limitations in the ability to conduct a meaningful analysis/simulation of pathogen movement in receiving waters
Webinar Benefits
- Understand what factors govern the ability to predict pathogen transport in receiving waters
- Discuss some of the tools and options available to simulate pathogen transport in receiving waters
- Learn about what is and is not presently possible when faced with a need to simulate pathogen transport in receiving waters
Intended Audience
- Public Works managers and staff
- Attorneys
- Regulators
- Consultants
- Scientists
Webinar Outline
- A connecting reference to sources and causes of pathogens, and of regulatory and/or practical factors driving the need to simulate pathogen transport
- Environmental factors affecting persistence of pathogens in the environment
- Sources and fates of pathogens in the environment during transport
- Fundamentals of contaminant transport in fluid media and in porous media, including multiphase transport
- Available tools and models for predicting fluid transport of pathogens
- Limitations of simulation tools for predicting fluid transport of pathogens
- Interpretation and communication of simulation results