Styrene Concerns for lining Culverts and Sewer Systems

Dennis Pivin and Dr. Mark Knight discuss the environmental and safety concerns surrounding styrene discharge during CIPP lining of culverts. They examine past fish kill incidents and explain how hot water—not styrene—was the true culprit. The episode offers actionable best practices for contractors, including water temperature controls, clean site protocols, and proper curing. Mark also breaks down the chemistry of different resin types and the importance of understanding what’s actually being released—and how to safely manage it.