TagSea-Tac Airport(2023)

Hart Crowser draft subsurface conditions data report (project J-4978-18) prepared for Port Of Seattle and HNTB, dated March 20, 2000, covering the North Safety Area Third Runway Embankment at Sea-Tac International Airport. Report includes generalized geologic description, subsurface soil conditions, hydrogeologic conditions, laboratory test results (consolidation, CU triaxial, UU triaxial, direct shear tests), hydraulic conductivity

This March 2000 report, prepared by Washington State health and environmental agencies, addresses community health concerns about air quality around Seattle-Tacoma (Sea-Tac) Airport by examining whether jet engine exhaust emissions can be monitored or modeled using wind and takeoff data. It outlines recommendations for conducting a comprehensive air quality study, including monitoring methods, data analysis approaches, and estimated costs, while also considering health impacts and environmental justice issues for nearby residents. The report was developed in consultation with public health officials, community representatives, the EPA, and local universities.

Letter dated February 1, 2000 from John Strunk, Associated Earth Sciences, Inc. (AESI Project No. BV97016D) to Roger Nye, Washington Department of Ecology Northwest Regional Office, submitting first and second quarter ground water level measurements from the C1 (Qva) aquifer monitoring well network at Seattle-Tacoma International Airport. Reports on six pressure transducers installed in the

Memorandum BV97016D dated January 31, 2000, from John Strunk (Associated Earth Sciences Inc.) and Mike Riley (S.S. Papadopulos & Associates, Inc.) to Roger Nye, Department of Ecology, responding to nine Ecology comments on the Conceptual Flow Model Boundary Presentation for the Seattle-Tacoma International Airport ground water study. Topics addressed include MODFLOW model setup covering approximately

Internal forwarded email chain dated January 28, 2000, from Erik Stockdale to Tom Luster (copying Sarah Suggs original), forwarding a SEPA register entry (Ecology File# 200000524, LA File# 00-02) for an Addendum EIS issued by the Port of Seattle as lead agency. The addendum EIS covers Third Runway Wetland Fill and Temporary Construction at Sea-Tac

Draft modeled till thickness map around the Aircraft Operations & Maintenance Area (AOMA) at Seattle-Tacoma International Airport, WA, prepared by Associated Earth Sciences, Inc. on 01/24/00. Contour map showing till thickness in feet (0–90 ft range) with data points from 01-24-00, depicting existing runways, main SeaTac buildings, tunnels, streets, and streams. Administrative Record document AR

Internal email from Tom Luster to Kevin Fitzpatrick dated January 12, 2000, discussing the legal distinction between Clean Water Act Section 401(d) and Section 402(a) as applied to Sea-Tac Airport water quality (WQ) and State Environmental Policy Act (SEA/SEPA) policies. Email quotes statutory language verbatim: 401(d) uses mandatory ‘shall’ language for effluent limitations and monitoring