In this video, we welcome Molly Alar, senior consultant at Parametrix, as she presents a real-world case study of a facility struggling to meet the requirements of Washington’s Industrial Stormwater General Permit (ISGP).-Molly walks us through how her team supported a food manufacturing site that faced multiple benchmark exceedances, including copper, zinc, turbidity, and visible oil and grease. You’ll hear how they addressed issues such as poor BMP implementation, missed sampling, and gravel storage yards by implementing targeted operational changes, which led to significant improvements in stormwater quality. For more resources and training materials, visit: www.wastormwatercenter.org
Document Tag: research
Scientific or technical studies related to stormwater quality or treatment
ISGP Case Study: Responding to 60-day Notice of Intent to Sue
In this video, we welcome Stacy Paterson, senior consultant from Parametrix, as she presents a real-world case study about a facility navigating a third-party Clean Water Act lawsuit under Washington’s Industrial Stormwater General Permit (ISGP).-Stacy walks through how her team assessed compliance, uncovered critical gaps in documentation and BMP implementation, and helped the facility avoid more severe consequences. The site had to respond quickly to a 60-day notice of intent to sue€”this presentation details what they did, what they discovered, and how they brought the facility into compliance. For more resources and training materials, visit: www.wastormwatercenter.org
ISGP Case Study- Mixed Media Filtration with Monitoring
In this Case Study, Joel Prock, Senior Environmental Engineer with Boeing, discusses the use of mixed media filtration systems to reduce stormwater-related risk on an industrial facility. Joel also details the importance of maintaining these systems and showcases the monitoring dashboard he uses to make informed maintenance decisions. To learn more about stormwater best management practices for your industrial facility, please visit https://www.wastormwatercenter.org/permit-assistance/isgp-assistance/
6PPD Policy Talk
Presenter: Tanya Williams, Ecology
In 2020, researchers in the Pacific Northwest identified 6PPD-quinone as the long-sought cause of coho salmon deaths during spawning runs. This chemical—formed when 6PPD, a common tire additive, reacts with ozone—is now recognized as the second most toxic substance to aquatic life worldwide. The discovery has sparked a global effort to address its impacts. Federal, State, Tribal, and Local governments, along with researchers and community partners, are working to restrict 6PPD use in tires and advance stormwater control technologies that can reduce or remove 6PPD-quinone before it reaches waterways. Ecology’s 6PPD lead agency planner and stormwater engineer will share Washington State’s legislative directive to accelerate solutions that protect salmon and the ecosystems that depend on them. The session will review emerging Tribal, federal, and state actions to restrict the use of 6PPD in tires and present the latest results from stormwater best management practice research aimed at reducing 6PPD-quinone exposure in sensitive watersheds to protect aquatic life from harm.
