TagMiller Creek(260)

Final meeting notes from July 16, 2001 for the 401 Permit Decision-Making process for Sea-Tac International Airport Third Runway, covering low flow analysis for Miller Creek and Walker Creek. Attendees included Ann Kenny (Dept. of Ecology), Kelly Whiting (King County), Keith Smith (Port of Seattle), Paul Fendt and Robert Farid (Parametrix), Rick Schaefer (EarthTech), and

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, dated July 16, 2001. Attendees included representatives from Washington State Department of Ecology (Ann Kenny), King County (Kelly Whiting), Port of Seattle (Keith Smith), Parametrix, EarthTech, and Aquaterra. Document

Final draft meeting notes from July 5, 2001 technical meeting on 401 Permit Decision-Making for the Sea-Tac Airport Third Runway, prepared by Rachel McCrea of Floyd & Snider Inc. Attendees include Ann Kenny (Dept. of Ecology), Kelly Whiting (King County), Keith Smith (Port of Seattle), Felix Kristanovich (Foster Wheeler), Paul Fendt and Tom Atkins (Parametrix),

Water Resources Consulting LLC submitted technical comments in July 2001 on behalf of the Airport Communities Coalition, challenging the Port of Seattle's stormwater management plans for SeaTac Airport expansion. The document disputes Port claims about impervious surface increases, water diversions affecting Miller, Walker, and Des Moines creeks, and the effectiveness of bioswale filtration systems for removing pollutants such as metals from airport runoff.

This table from a July 2001 Comprehensive Stormwater Management Plan summarizes drainage area measurements and changes in impervious surfaces (such as pavement and rooftops) across Miller Creek, Walker Creek, and Des Moines Creek watersheds at Seattle-Tacoma International Airport (STIA). It compares 1994 baseline conditions to projected 2006 future conditions, showing a total increase of approximately 305.7 acres of impervious area across all drainage basins. The data was compiled from GIS coverage to support stormwater management planning for the airport's master plan update.

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

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.

A biologist from Columbia Biological Assessments submitted a rebuttal in June 2001 challenging the Port of Seattle's environmental justifications for proposed construction improvements at Seattle-Tacoma International Airport. The letter argues that the Port failed to adequately assess impacts on Miller Creek, particularly regarding fish habitat, water temperature, and dissolved oxygen levels in a relocated section of the creek. The author contends that no proper baseline survey of fish and aquatic life was conducted, making regulatory approval of the project scientifically premature.

A biologist with Columbia Biological Assessments submitted a formal rebuttal in June 2001 challenging the Port of Seattle's environmental responses related to proposed Master Plan Update Improvements at Seattle-Tacoma International Airport. The rebuttal argues that the Port failed to adequately assess impacts on Miller Creek, particularly regarding fish habitat, water temperature, and dissolved oxygen levels during summer months. The author contends that no proper baseline survey of fish and aquatic organisms was conducted, making regulatory approval and proposed mitigation measures scientifically insufficient.

FAA Northwest Mountain Region letter dated June 19, 2001, from FAA to Ms. Muffy Walker, U.S. Army Corps of Engineers Regulatory Branch Seattle District Office, following up on May 31, 2001 letter. Addresses three issues raised in April 30, 2001 Memorandum for the Record regarding the Port of Seattle third runway at Seattle-Tacoma International Airport