TagACC(1524)

An internal email chain from Washington State Department of Ecology staff discussing recommended language for fill material criteria in a Draft 401 Certification for the Seattle-Tacoma International Airport Third Runway project. Peter Kmet recommends using Table 749-3 ecological screening values, requiring the uppermost 6 feet of fill to be clean natural soil, and applying WAC

An email chain between Washington State Department of Ecology staff discussing acceptable fill criteria language for a Draft 401 Certification related to the Seattle-Tacoma International Airport Third Runway project. Peter Kmet recommends language addressing potential impacts on plants and animals from fill material, including use of Table 749-3 chemical screening values, bioassay testing alternatives, and

An internal email from Peter Kmet to Kevin Fitzpatrick recommending language for a 401 Certification regarding acceptable fill criteria for the Seattle-Tacoma International Airport Third Runway project. The email outlines four elements for ensuring fill material would not cause adverse impacts on plants and animals, including chemical testing requirements, bioassay testing, a clean soil buffer

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,

An internal email from Chung K. Yee to Kevin Fitzpatrick, with a draft document attached, discussing fill criteria language for a 401 water quality certification related to the proposed Third Runway embankment at Sea-Tac Airport. The fill criteria are based on Method A table, 3-phase model protection of ground water and surface water, PQL, natural

An email from Chung K. Yee to Craig E. Thompson and Kevin Fitzpatrick transmitting draft fill criteria requirements for the 401 Water Quality Certification for the SeaTac Third Runway embankment project. The email summarizes the basis for fill criteria developed using Amended MTCA, including Method A soil cleanup levels, three-phase model calculations for ground 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

Final meeting notes from a June 25, 2001 session on low flow analysis for the Sea-Tac International Airport Third Runway 401 Permit Decision-Making process. The meeting covered methodology for evaluating modeling results to determine stream flow impacts and mitigation requirements, vault filling estimates, slice model status, and non-hydrologic effects. Modeling results were not yet available

A June 25, 2001 memorandum from Charles Ellingson of Pacific Groundwater Group to Keith Smith of Port Of Seattle presenting draft interim deliverables for Hydrus/Slice modeling of third runway fill at Sea-Tac Airport. The memo defines areas to be modeled by Hydrus/Slice instead of HSPF in the Miller Creek and Walker Creek basins, calculates effective

Northwest Hydraulic Consultants, retained by the Airport Communities Coalition, provides follow-up comments to the U.S. Army Corps of Engineers and Washington State Department of Ecology on stormwater, hydrology, and hydraulics aspects of the proposed third runway at Sea-Tac Airport. The letter responds to the Port of Seattle’s April 30, 2001 responses to earlier NHC comments