TagThird Runway(1098)

The Port of Seattle recorded this Declaration of Restrictive Covenants to permanently protect the Tyee Valley Golf Course Mitigation Area as a natural wetland, as required by the Washington State Department of Ecology and the U.S. Army Corps of Engineers in connection with the construction of Sea-Tac Airport's third runway. The declaration prohibits clearing, grading, filling, and construction within the mitigation area, with limited exceptions for approved wildlife management, monitoring, maintenance, and stormwater infrastructure. It was established to satisfy federal Clean Water Act requirements and state water quality standards by preserving and enhancing wetland and riparian habitat displaced by airport expansion.

Internal email chain dated June 27, 2001 among Peter Kmet, Kevin Fitzpatrick, Chung K. Yee, and others at Washington State Department of Ecology regarding acceptable fill criteria language for the Draft 401 Certification for the Seattle-Tacoma International Airport Third Runway Master Plan improvements. Kmet recommends against restricting fill to naturally occurring uncontaminated soils and proposes

This 2001 email chain among Washington State Department of Ecology staff discusses recommended criteria for fill material to be used in the Seattle-Tacoma International Airport Third Runway project. Staff member Peter Kmet proposed requiring fill material to meet ecological screening values from Table 749-3, with the uppermost six feet consisting of clean, naturally occurring soil free of manmade organic compounds and metals above natural background levels. The discussion also covers the applicability of the Model Toxics Control Act (MTCA) standards and the need to address potential impacts on plants, animals, groundwater, and aquatic organisms.

Final draft meeting notes prepared by Rachel McCrea of Floyd & Snider Inc. for 401 Permit Decision-Making technical meetings on June 25 and June 27, 2001, regarding Sea-Tac International Airport Third Runway. Attendees included Ann Kenny and John Drabek (Dept. of Ecology), Kelly Whiting (King County), Keith Smith (Port of Seattle), Paul Fendt and Tom

Internal email chain dated June 27, 2001 from Peter Kmet (Ecology HQ/TCP) to Kevin Fitzpatrick, cc Chung K. Yee, marked ‘Deliberative Document Currently Exempt From Public Disclosure.’ Kmet recommends language for fill material criteria in the Draft 401 Certification for the Seattle-Tacoma International Airport Third Runway project, including: requiring the uppermost 6 feet of fill

Email from Chung K. Yee to Kevin Fitzpatrick (cc: Craig E. Thompson, Ann Kenny), dated June 26, 2001, transmitting draft clean fill criteria language for the 401 Certification related to the proposed Third Runway embankment at Sea-Tac Airport. Fill criteria based on Method A table, 3-phase model protection of ground water and surface water, PQL,

Email dated June 26, 2001 from Chung K. Yee to Craig E. Thompson and Kevin Fitzpatrick (Ecology) transmitting draft fill criteria requirements for the 401 Water Quality Certification for the SeaTac Third Runway Embankment project. Attachments include: draft clean fill criteria, spreadsheets deriving surface water quality criteria and ground water cleanup levels using three-phase model

Email from Chung K. Yee to Kevin Fitzpatrick, cc Craig E. Thompson and Ann Kenny, dated June 26, 2001, transmitting draft fill criteria language for a 401 Certification related to the Port Of Seattle Third Runway embankment project. Fill criteria are based on Method A table, 3-phase model protection of ground water and surface water,

Final meeting notes prepared by Kate Snider of Floyd & Snider Inc. for the 401 Permit Decision-Making process for the Sea-Tac International Airport Third Runway project, covering Low Flow Analysis discussions held June 25, 2001. Attendees included representatives from Washington State Department of Ecology (Ann Kenny, John Drabeck), King County (Kelly Whiting), Port of Seattle

A June 2001 technical memo from Pacific Groundwater Group to the Port of Seattle outlines groundwater modeling work related to the proposed Sea-Tac Airport third runway construction. The memo defines areas to be analyzed using Hydrus/Slice modeling software instead of the standard HSPF model, focusing on how new runway fill in the Miller Creek and Walker Creek basins will affect groundwater recharge. It also describes the selection of three representative hydrogeologic cross sections and methods for calculating effective recharge, accounting for runoff from impervious runway surfaces into surrounding pervious fill areas.