TagPort Of Seattle(2405)

This 2000 hydrogeologic study, prepared by Associated Earth Sciences, Inc. for the Port of Seattle, examines groundwater conditions beneath the Industrial Waste System (IWS) plant and lagoons at Seattle-Tacoma International Airport. The report assesses soil geology, groundwater flow direction, and water quality — including levels of volatile organic compounds, petroleum hydrocarbons, and ethylene glycol — near three wastewater lagoons on airport property. It concludes with findings and recommendations related to potential contaminant releases and ongoing groundwater monitoring needs.

In June 2000, the Port of Seattle submitted a formal application to the Washington Department of Ecology to add a new use to an existing groundwater right for a well located on Port property near Seattle-Tacoma International Airport. The well, originally drilled in the late 1940s and previously used to irrigate the Tyee Valley Golf Course, was proposed to also provide flow augmentation and temperature control for Des Moines Creek as part of a jointly funded basin restoration plan. The application addressed the well's ownership history, its continuous use for golf course irrigation since the mid-1960s, and the Port's agreement with Highline Water District confirming the Port's title to the associated water right (Certificate No. 2369).

The Port of Seattle filed an Application for Change/Transfer of Water Right with the Washington State Department of Ecology in June 2000, seeking to add flow augmentation for Des Moines Creek as a purpose of use to an existing well water right (No. 2369) originally used for domestic supply, golf course irrigation, and related uses at Tyee Valley Golf Course in SeaTac. The proposed change would extend the water right beyond 2000 to support creek flow augmentation alongside continued domestic supply and golf course irrigation, covering the Des Moines Creek corridor from the airport property to the creek's mouth at Puget Sound. This application reflects the Port's efforts to manage water resources in connection with environmental and operational responsibilities related to Sea-Tac Airport.

This June 2000 Biological Assessment, prepared by Parametrix, Inc. for the Federal Aviation Administration and Port of Seattle, evaluates the potential environmental impacts of proposed Master Plan Update Improvements at Seattle-Tacoma International Airport on federally listed species. The report examines effects on aquatic resources including Chinook salmon, bull trout, and their critical habitats within nearby waterways such as Miller Creek, Des Moines Creek, and the Green River. It was prepared to support Section 7 consultation under the Endangered Species Act with the U.S. Fish and Wildlife Service and National Marine Fisheries Service.

Email dated June 12, 2000 from Erik Stockdale (Wetlands Specialist, Washington State Department of Ecology) to Jim Kelley (Parametrix) and Elizabeth Leavitt (Port of Seattle), summarizing a June 9, 2000 conversation regarding the Wildlife Hazard Management Plan (WHMP) and its consistency with the Natural Resource Mitigation Plan (NRMP) and 401 water quality certification. Stockdale outlines

Biological Assessment prepared by Parametrix, Inc. for the Federal Aviation Administration and Port Of Seattle regarding reinitiation and initiation of Section 7 ESA consultation for Seattle-Tacoma International Airport Master Plan Update Improvements. Covers ESA-listed species managed by USFWS and NMFS including Chinook salmon, bull trout, and essential fish habitat (EFH). Analyzes hydrologic systems including Miller

Hart Crowser draft subsurface conditions data report (project J-4978.21) prepared for Port Of Seattle and HNTB, June 2000, covering the West MSE (Mechanically Stabilized Earth) Wall for the Third Runway Embankment at Sea-Tac International Airport. Report includes generalized geologic conditions, subsurface soil conditions, consolidation test results, CU and UU triaxial compression test results, hydrogeologic conditions,

Letter dated May 22, 2000 from Elizabeth Leavitt, Manager of Aviation Environmental Programs at Port Of Seattle, to Tom Luster at Washington Department of Ecology (Environmental Coordination Section), withdrawing the December 6, 1999 CZMA Consistency Statement and simultaneously submitting a new one to reset the six-month review period under 33 C.F.R. Sec. 325.2. The withdrawal

Email from Raymond Hellwig to Thomas Fitzsimmons dated May 19, 2000, regarding the SeaTac Third Runway permitting process and July 2000 decision-making timeframe. Discusses King County review of Port Of Seattle stormwater management plan requiring up to 10 more weeks, internal staff meetings to develop a definitive issues list, drafting 401 language for resolved issues,