Notes
Geotechnical engineering report prepared by Haley & Aldrich, Inc. for Port Of Seattle on the Sea-Tac IWTP (Industrial Wastewater Treatment Plant) AGB Site at Seattle-Tacoma International Airport, SeaTac, Washington, file no. 0204661-002, dated August 2025 (draft). Prepared by Mike Espinoza P.E. and Blake Lytle-Goldstein L.G.; reviewed by Benjamin M. Blanchette P.E., Roy Jensen L.H.G., and Douglas D. Lindquist P.E., LEED AP. Covers regional geology, soil conditions, groundwater conditions, hydraulic properties, Lagoon 3 site subsurface review, seismic parameters and geotechnical hazards, environmental considerations, site preparation and grading, temporary and permanent slopes, embankment design, slope stability, embankment settlement, and support of excavation.