TagStormwater(373)

Declaration of William A. Rozeboom, PE, senior engineer at Northwest Hydraulic Consultants, filed in PCHB Case No. 01-133 before the Pollution Control Hearings Board for the State of Washington. Filed on behalf of Airport Communities Coalition (ACC) in support of a motion for stay of Section 401 Certification No. 1996-4-02325 and CZMA concurrency statement issued

A September 2001 internal email summarizes a Stipulated Agreement between the Washington State Department of Ecology and the Port of Seattle regarding the third runway construction at Sea-Tac Airport. The agreement clarifies the scope and duration of water quality certification conditions (401 permit), including perpetual wetland mitigation requirements, 15-year wetland monitoring, and rules governing fill material approval and stormwater management. Key changes also address hydrologic monitoring schedules, buffer requirements, and reporting frequency to ensure environmental protections remain in place during and after construction.

Annual Stormwater Monitoring Report for Seattle-Tacoma International Airport (STIA), prepared by Scott Tobiason, Environmental Management Specialist, Aviation Environmental Programs, Port of Seattle, covering the period July 1, 2000 through June 30, 2001. Report includes NPDES stormwater monitoring data for Sea-Tac Airport storm drainage subbasins, grab and composite sample results for total petroleum hydrocarbons (TPH), fecal

Annual Stormwater Monitoring Report prepared by Port Of Seattle pursuant to Special Condition S2.E of the NPDES permit for Seattle-Tacoma International Airport (STIA), covering July 1, 2000 through June 30, 2001. Report covers 14 outfalls per permit condition S2.B; 61 grab and 59 composite samples from 22 storm events; 7-year cumulative totals exceed 400 samples

This report, prepared by the Port of Seattle in September 2001, presents the findings of annual stormwater monitoring conducted at Seattle-Tacoma International Airport for the period July 1, 2000 through June 30, 2001. It covers water quality sampling results for pollutants including petroleum hydrocarbons, fecal coliforms, suspended solids, metals, and deicing-related contaminants collected from the airport's storm drainage system. The report documents sampling locations, storm events analyzed, and outfall inspections aimed at assessing the airport's environmental impact on surrounding waterways.

Hart Crowser prepared this Final Draft Conceptual Borrow Material Development and Reclamation Plan for Borrow Areas 3 and 4 at Sea-Tac International Airport, City of SeaTac, Washington, for the Port Of Seattle, dated August 15, 2001 (project number 4978-65). The plan covers site preparation, excavation practices, reclamation, revegetation, weed control, stormwater management, and wetland protection

Draft memorandum dated 8/13/01 from Ray Hellwig, Director, to Tom Fitzsimmons, Director, Washington State Department of Ecology, recommending approval of a 401 Water Quality Certification for the Port Of Seattle Sea-Tac International Airport (STIA) Third Runway and related projects. Document AR028003 covers the Port’s proposals to construct an 8,500-foot parallel third runway, two Runway Safety

Washington State Department of Ecology news release (AR027998, dated August 10, 2001) approving the Port Of Seattle’s water-quality certification permit under the federal Clean Water Act for construction of a third runway at Seattle-Tacoma International Airport. The permit covers stormwater management for Des Moines, Miller, and Walker creeks; filling of nearly 20 acres of wetlands;

Dr. Peter Willing, a water resources expert, submitted this declaration opposing the Department of Ecology's water quality certification for Sea-Tac Airport's proposed third runway construction. He argues that the certification relies on vague future performance expectations and unresolved contingency plans that fail to provide reasonable assurance that water quality standards will be met. His key concerns include the Port of Seattle's flawed low streamflow analysis and inadequate stormwater management plans that could perpetuate ongoing water quality violations in nearby Class AA streams.

Confidential discussion draft press release (01-138 DRAFT, dated August 9, 2001) from Washington State Department of Ecology (Ecology) announcing approval of Port Of Seattle’s 401 water-quality certification permit under the federal Clean Water Act to construct a third runway at Seattle-Tacoma International Airport. The permit includes conditions covering stormwater management (15 major ponds and vault