“Zone of passage” means an area bordering a mixing zone that is free from pollutants and allows for unobstructed movement of aquatic organisms.

Source. (See Revision Notes #1, #2, and #3 at chapter heading for Env-Wq 1700) #12042, eff 12-1-16; ss by #14203, eff 2-26-25 (formerly Env-Wq 1702.52)