Notes
Final Engineering Report for the Seattle-Tacoma International Airport (SEA) Industrial Wastewater Treatment Plant (IWTP) Expansion, prepared by Gresham Smith (Project No. 44846.10) for the Port of Seattle under Port Contract No. P-00320039. Developed in accordance with Washington Administrative Code (WAC) 173-240-130 and submitted to meet requirement S3.B of Waste Discharge Permit #7810-05, effective July 21, 2021. Version 2.1, dated June 7, 2023, signed and sealed by Mark R. Ervin, Professional Engineer, State of Washington (#51253).