Track 4 at MuniCon 2025 focuses on Operations & Maintenance (O&M) and Source Control, providing valuable insights into how municipalities can optimize stormwater management practices and meet compliance requirements. With a variety of sessions covering critical topics such as PCB regulations, stormwater asset management, source control BMPs, and emerging contaminants like PFAS, this track is designed for professionals looking to strengthen their stormwater programs and ensure long-term sustainability. Here’s a sneak peek into the exciting sessions lined up: 

Seattle and Bellevue 2030 PCBs in Building Materials 

Emma Dexter (Seattle 2030 District) will cover how polychlorinated biphenyls (PCBs), toxic chemicals found in building materials made before 1979, can enter stormwater systems and the impact they have on Washington’s environment. Learn about the updated source control BMPs in the Stormwater Management Manual for Western Washington and the necessary actions municipalities must take to comply with new regulations around PCBs. Case study examples and resources will be provided. 

Seattle’s Approach to Addressing the New Permit’s PCB Requirements 

Jess Huybregts (City of Seattle, Seattle Public Utilities) will dive deeper into Seattle’s approach for complying with new PCB requirements under the MS4 Permit. The presentation will highlight Seattle’s inventory process, tools used to detect PCBs, and ongoing efforts to prevent these contaminants from entering the stormwater system during activities like building washdowns and renovations. 

Street Sweeping Guidance Manual 

Aimee Navickis-Brasch and Lily Alvarez (Evergreen StormH2O) discuss the development of a street sweeping guidance manual funded by the Washington State 6PPD Proviso. This manual is designed to help municipalities develop or enhance their street sweeping programs to meet the 2024–2029 MS4 Permit requirements. The session will outline how the manual can be used to support clean water initiatives and contribute to Puget Sound recovery efforts. 

Evaluation of Stormwater BMP Maintenance Standards 

James Packman (Herrera Environmental Consultants) and Don McQuilliams (City of Bellevue Utilities) present findings from a Stormwater Action Monitoring (SAM) study on the maintenance standards for stormwater BMPs. This session will evaluate the current maintenance standards in the Stormwater Management Manual for Western Washington and propose adjustments to improve BMP management, reduce effort, and promote other benefits like habitat improvement. 

Stormwater Infiltration and Filtration Lifecycles: Lessons from Municipalities and Applied Research 

Aaron Poresky (Geosyntec Consultants), John Knutson (Aspect Consulting), Jack Wells (Yakima County), and Jeff Wiemer (City of Lewiston) share lessons learned from stormwater infiltration and filtration practices over the years. This panel will highlight applied research, tools for better lifecycle decision-making, and design approaches to optimize long-term costs and effectiveness, covering topics like infiltration SOPs, BMP performance testing, and filtration design guidance. 

City of Olympia Catch Basin Sediment Analysis: Changing Inspection Frequency 

Kane Osstifin and Sue Barclift (City of Olympia) will present how Olympia’s Storm and Surface Water Utility is evaluating catch basin inspection frequency using 8 years of sediment data. Learn how this analysis is improving efficiency in meeting NPDES Permit requirements and preparing for future regulations. 

PFAS in Stormwater | Updates on Research, Regulation, and Treatment Innovations 

Brandon Steets (Geosyntec Consultants) will guide attendees through the latest research, regulations, and treatment innovations for PFAS chemicals in stormwater. This session will cover the risks associated with PFAS, its sources, and the regulatory trends driving the need for stormwater PFAS mitigation. Learn about the effectiveness of various treatment BMPs and how to integrate PFAS mitigation strategies into stormwater management programs. 

Decentralizing Private Stormwater Facility Inspection Responsibility 

Rebecca Casey and Trey George (City of Spokane) discuss Spokane’s Private Stormwater Facility Annual Certification Program, which requires third-party certification of private stormwater facilities. The session will cover how the program works, its successes, and the lessons learned over its four years of operation, offering insights for municipalities exploring similar programs. 

Mobile Business Identification for Stormwater Source Control 

James Packman (Herrera Environmental Consultants) and Alison Schweitzer (King County) will introduce a keyword search tool for identifying mobile businesses of interest to stormwater source control. This tool, developed as part of a SAM study, helps municipalities efficiently identify mobile businesses that need stormwater management attention and offers a practical approach for integrating source control into these businesses’ operations. 

 

Track 4 at MuniCon 2025 is your opportunity to dive deep into stormwater Operations & Maintenance and Source Control strategies that are crucial for compliance and long-term environmental health. From innovative BMPs for managing PCBs and PFAS to practical tools for stormwater maintenance and source control, this track offers essential strategies for managing your stormwater systems effectively. Register today to ensure you don’t miss out on these valuable sessions!