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INSTRUCTORS:
Jane Clary, P.E., M.ASCE
Jon Hathaway, Ph.D., P.E.
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 fourth webinar will review the most effective non-structural/source control and structural control strategies to reduce FIB and pathogen loading from urban stormwater systems. It will also discuss implementation constraints and costs associated with these strategies, and present recent relevant case studies.

Primary Discussion Topics

• Selection, prioritization, anticipated performance, and cost of non-structural and structural BMPs for addressing FIB in urban stormwater, including both dry and wet weather control strategies
• Nonstructural controls, including urban runoff flow reduction and FIB source control programs
• Microbial source tracking investigation as an advanced IDDE tool and the remedial measures this may prompt
• Structural controls, including flow-through treatment options, infiltration based options, traditional disinfection practices, and novel technologies that are being developed through applied research efforts

Learning Outcomes

• Understand the types of source control
• Learn different treatment strategies that may help to reduce FIB and pathogen loading
• Limitations and costs of these strategies

Webinar Benefits

• Hear about the latest BMP performance analysis findings for structural and non-structural practices for reducing FIB loading
• Learn more about the latest strategies for, and costs associated with, planning and implementing watershed wide controls to address FIB TMDLs

Intended Audience

• Public Works managers and staff
• Attorneys
• Regulators
• Consultants
• Scientists

Webinar Outline

• Source controls and treatment strategies
• Expected effectiveness
• Data gaps
• Practical constraints related to source controls, structural stormwater controls, and disinfection
• Case studies illustrating challenges and approaches to implementing and complying with FIB total maximum daily load (TMDL) requirements in urban areas
• Conclusions and recommendations for additional applied research needs related to pathogens in urban stormwater systems and complying with FIB and/or pathogen TMDLs