Notes
Exhibit AR019499 from the PCHB Third Runway EIS administrative record. Section 5 of the Seattle-Tacoma International Airport (STIA) Comprehensive Stormwater Management Plan (SMP), July 2001, document 556-2912-001(28). Covers proposed Master Plan Update (MPU) improvements requiring stormwater management, land use changes, impervious and effective impervious area (EIA) calculations, HSPF modeling, Airport Surveillance Radar (ASR) relocation on west side acquisition area, Level 2 flow controls, GIS database analysis of pervious/impervious surface areas, and stormwater detention facilities. References King County SR 509 interchange, PGIS, and MPU Phases I–IV construction scheduling developed in late 1998.