TagACC(1534)

Published opinion filed November 15, 1999, Washington Court of Appeals Division One, No. 43100-5-I. Cities of Des Moines, Burien, Federal Way, Normandy Park, Tukwila, Highline School District No. 401, and Airport Communities Coalition (appellants) v. Puget Sound Regional Council, Port Of Seattle, and Commissioners of the Port Of Seattle (respondents). Consolidated with related cases including

Washington Court of Appeals Division One published opinion (No. 42306-1-I, filed November 15, 1999) in City of Des Moines, City of Burien, City of Federal Way, City of Normandy Park, City of Tukwila, Highline School District No. 401, and Airport Communities Coalition v. Puget Sound Regional Council, Executive Board of PSRC, Port of Seattle, and

Parametrix, Inc. prepared this Supplemental Airport Site Wetland and Stream Analysis for Port Of Seattle, dated November 12, 1999 (AR 043120). The report analyzes wetland and stream conditions at three supplemental airport candidate sites — Arlington, Lake Sawyer, and Frederickson — comparing 1994 MSA study findings with 1998 field-verified wetland boundary data. Includes tables comparing

Hart Crowser subsurface conditions data report (J-4978-16) prepared for HNTB and Port Of Seattle, dated November 12, 1999, regarding Phase 3 Fill for the Third Runway embankment at Seattle-Tacoma International Airport. Report covers generalized geologic and subsurface soil conditions, hydrogeologic conditions, field explorations (auger borings HC99-B61, HC99-B63, HC99-B65, HC99-B71, HC99-B73), test pits HC99-TP26 through HC99-TP44,

Addendum to the Des Moines Creek Regional Capital Improvement Project Preliminary Design Report, prepared November 1, 1999 by King County Capital Improvement Project Design Team for the Des Moines Creek Basin Committee. Prepared for Tim Heydon (City of Des Moines), Tom Hubbard (Port Of Seattle), David Masters (King County), Don Monaghan (City of SeaTac), and

This October 1999 draft document outlines resolved and unresolved regulatory issues related to a Sea-Tac Airport expansion project, focusing primarily on stormwater management, wetland mitigation, and water quality concerns. Key unresolved issues include compliance with Ecology and King County Stormwater Manuals, the role of a proposed Regional Detention Facility (RDF) in wetlands, de-icing impacts on dissolved oxygen levels, and instream flow reductions in Des Moines Creek. Additional concerns involve NPDES permit compliance, clean fill criteria, legal proceedings before the Pollution Control Hearings Board, and whether a shoreline permit is needed for an Auburn mitigation site.

A October 1999 laboratory analysis report from Aquatic Research Incorporated details water sample testing conducted for Parametrix/Port of Seattle. One water sample collected on October 8-11, 1999 was tested for total suspended solids, petroleum hydrocarbons (diesel and motor oil), and total metals including cadmium, copper, lead, and zinc. Results showed low levels of contaminants, with zinc detected at 0.102 mg/l and copper at 0.0070 mg/l, while diesel and motor oil levels fell below detection limits.

Dissolved Oxygen Deicing Study prepared by Cosmopolitan Engineering Group for Port Of Seattle Sea-Tac International Airport (AR042698, August 1999), examining impacts of de-icing agents from airport stormwater runoff on Miller Creek and Des Moines Creek, including BOD5 discharges to NW Ponds and Lake Reba. Accompanied by Washington State Department of Ecology (NWRO) response letter dated

In this October 1999 letter, the Washington State Department of Ecology reviewed a study by the Port of Seattle examining how de-icing chemicals used at Sea-Tac International Airport affect water quality in Miller and Des Moines Creeks. Ecology found significant deficiencies in the study, including incorrect water quality classifications, too few de-icing events sampled, and inadequate monitoring methods, concluding that dissolved oxygen levels in both creeks frequently failed to meet applicable standards. The agency requested that the Port resubmit the study with corrections before a determination could be made about whether de-icing operations were being properly managed to protect local waterways.

In this October 1999 internal memo, Washington State Department of Ecology staffer Tom Luster describes a meeting with his supervisor Paula regarding the agency's water quality review of Sea-Tac Airport expansion. Luster explains that he cannot yet provide 'reasonable assurance' that the Port of Seattle's proposal will meet water quality standards for Des Moines Creek, citing inadequate stormwater treatment plans and the Port's removal of flow augmentation measures from its mitigation plan. He expresses concern that management pressure to approve the project quickly could compromise the integrity of the regulatory review process.