Request for AIS Waiver for Type I Reinforcement Fibers in Precast Segment Tunnel Liners for Columbus, Ohio

The following waiver request has been received by EPA. The 15-day public comment period is closed. EPA is currently reviewing the waiver request.

• AIS Waiver Request for Type I Reinforcement Fibers in Precast Segment Tunnel Liners for Columbus, Ohio (pdf) (3.78 MB)