Notes
LeighFisher memorandum summarizing airfield simulation modeling conducted for the Port Of Seattle Sustainable Airport Master Plan (SAMP) and follow-on NEPA review at Sea-Tac Airport. Covers TAAM (Total Airport and Airspace Modeller) model development from 2015 through mid-2017, including initial calibration to 2014 activity, FAA-requested recalibration to 2016 activity, maximum sustainable throughput experiments, and revised future-year PAL 2 (2024), PAL 3 (2029), and PAL 4 (2034) modeling. Details five operating scenarios (South VMC, South MMC, South IMC, North VMC, North IMC), runway use assumptions for runways 16C, 16L, 16R, 34R, 34L, Low/Medium/High operational efficiency improvements, and A/B runway use pattern variants — totaling 90 individual TAAM models. Average aircraft delays without mitigation projected to exceed 20 minutes by PAL 4 (~2034).