Notes
This document outlines conditions for acceptance of fill materials to be used in construction of the Third Runway and associated Master Plan Update Improvements at Sea-Tac Airport. It details documentation requirements including Phase I and II Environmental Site Assessments, fill source sampling schedules, and specific fill criteria limitations for hazardous substances such as arsenic, lead, chromium, and mercury. The Port of Seattle must submit borrow site clean fill certification to Ecology for review and written approval prior to fill placement.
