TagSea-Tac Airport(1855)

NPDES Waste Discharge Permit No. WA-002465-1 issued by Washington State Department of Ecology (Northwest Regional Office) to Port Of Seattle for Seattle-Tacoma International Airport, King County, WA. Permit covers industrial wastewater discharge to Puget Sound (Outfall 001), stormwater discharges to Des Moines Creek (Outfalls 002-005, 009, 010, 014, 015), Miller Creek (Outfalls 006-008, 011), City

Responsiveness summary for NPDES Permit No. WA-002465-1 issued by Washington State Department of Ecology to Port Of Seattle for Seattle-Tacoma International Airport (Sea-Tac Airport), prepared by Lisa Zinner, P.E., February 20, 1998. Covers discharge of treated industrial wastewater and stormwater; public meeting held November 3, 1997 and public hearing November 10, 1997 at Burien Public

Report prepared by Parametrix, Inc. for Port Of Seattle analyzing multiple-day rainfall probabilities at Seattle-Tacoma International Airport (Sea-Tac Airport). AR041556. Contains annual maximum precipitation probability plots for 1-7 day periods, monthly rainfall probability plots for each calendar month, and April-October seasonal rainfall probability plots. Includes appendices with slope and intercept estimates for rainfall-to-probability and probability-to-rainfall

This January 1998 geotechnical engineering report by AGI Technologies provides design recommendations for Phase 1 embankment construction related to the Third Runway Project at Seattle-Tacoma International Airport. The report covers site conditions including subsurface soil layers and groundwater, as well as design concepts addressing embankment stability, settlement, and drainage. It was prepared for HNTB Corporation as part of the engineering groundwork for the airport's runway expansion.

This Winter 1998 newsletter from the Seattle-Tacoma International Airport Noise Abatement Office reports that U.S. airline fleets are transitioning ahead of schedule to quieter Stage 3 aircraft, with 75.5% of U.S. planes and 87% of Sea-Tac flights already meeting the standard required by the year 2000. Alaska Airlines completed hush kit installations on its Boeing 737-200 jets, achieving full Stage 3 compliance two years early, though engine testing caused some community noise concerns. Quarterly reports for mid-1997 also detail nighttime flight restrictions, noise complaint line activity, flight procedure compliance rates, and progress on a home insulation remediation program that had assisted over 7,000 homeowners.

This 1997 Annual Stormwater Monitoring Report, prepared by Scott Tobiason of Port of Seattle Environmental Services, documents water quality data collected from Seattle-Tacoma International Airport's stormwater discharges between July 1, 1996 and May 31, 1997. The report analyzes discharge samples from stormwater outfalls across the airport's drainage basins, comparing results to regional and national benchmarks, and notes that improvements from newly installed Best Management Practices (BMPs) would be evaluated in the following year's report. It was submitted to the Washington Department of Ecology in fulfillment of Special Condition S.9 of the airport's NPDES permit.

This document contains aerial photographs of Seattle-Tacoma International Airport (Sea-Tac) taken in 1997 and 1998 by Walker & Associates, a photogrammetric and GIS services firm based in Seattle, WA. The images show the airport's runways, taxiways, terminal area, and surrounding residential and commercial neighborhoods from above. Accompanying metadata indicates the 1997 photograph was taken on August 31, 1997, at an approximate print scale of 1 inch equals 2,300 feet, under negative number 1197 SeaTac PP-2.

A study commissioned by the Puget Sound Regional Council to assess the financial feasibility of establishing a funding mechanism for acquiring and redeveloping properties adversely impacted by regionally significant essential public facilities. The study examines case study areas near the Auburn Rail Yard, Sea-Tac International Airport, and the proposed Everett 112th Street SE HOV Lanes

June 30, 1997 letter from Washington Governor Gary Locke to U.S. Department of Transportation Secretary Rodney Slater, reaffirming and superseding the December 20, 1996 letter from Ecology Director Mary Riveland to Dennis Ossenkop. Constitutes state certification required under 49 U.S.C. 47101 et seq. that the Sea-Tac Airport third runway development project will comply with applicable

A June 1997 transmittal from the Port of Seattle Engineering Department to Alaska Airlines' Peggy McCloskey forwards final bid bioassay results for the Arco Hoecust Safewing MP IV 1957 Green product. The enclosed Laboratory Report from Bio Research Laboratories, Inc. documents an Acute Oral Rat Toxicity Test performed for MultiChem Analytical Services, testing the Green Safewing MP IV substance at a dose of 5000 mg/kg. The report, dated May 21, 1997, was directed by Warren C. Ladiges, DVM, and signed off by President and Scientific Director John J. Majnarich, Ph.D.