TagEcology(797)

In July 1998, the Washington State Department of Ecology issued a Water Quality Certification and Coastal Zone Consistency Determination (Order #96-4-02325) to the Port of Seattle for construction of a third runway and other improvements at Seattle-Tacoma International Airport. The project would impact between 8 and 12 acres of wetlands, 980 linear feet of Miller Creek, and 2,280 linear feet of unnamed tributaries, requiring mitigation measures including stormwater management enhancements, stream restoration, floodplain improvements, and construction of 16 to 24 acres of replacement wetlands in Auburn, Washington. The certification was granted with specific conditions and penalties for non-compliance, reflecting concerns about environmental damage to local waterways.

Order #96-4-02325 dated July 20, 1998, from Washington State Department of Ecology (Gordon White, Program Manager, Shorelands and Environmental Assistance Program) to Barbara Hinkle (Port Of Seattle) and Tom Mueller (Corps of Engineers Regulatory Branch). Ecology certifies that proposed work in and adjacent to Miller Creek and Des Moines Creek at Seattle-Tacoma International Airport complies

Washington State Department of Ecology publication (No. 97-112, April 1998), authored by Andy McMillan of the Shorelands & Environmental Assistance Program. Introduces regulatory authority over wetlands, wetland definitions and delineation, wetland characterization and function assessment, wetland mitigation, and buffers. Covers Washington State wetland regulation under state law, published by Ecology’s Shorelands & Environmental Assistance Program,

Discharge Monitoring Report (DMR) for April 1998, permit number WA-002465-1, discharge number 001 (IWS), submitted by Port Of Seattle for Sea-Tac Airport (facility #681), P.O. Box 68727, Seattle WA 98168. Monitoring period covers April 1–30, 1998. Parameters monitored include flow (GPM), pH, oil and grease (mg/L), TSS (mg/L), BOD5 (mg/L), total glycols (mg/L), and TPH

NPDES Waste Discharge Permit No. WA-002465-1 issued by Washington State Department of Ecology (Ecology) to Port Of Seattle for Seattle-Tacoma International Airport, effective March 1, 1998, expiring June 30, 2002. Authorizes discharge of industrial wastewater to Puget Sound (Outfall 001) and stormwater to Des Moines Creek (Outfalls 002-005, 009, 010, 014, 015), Miller Creek (Outfalls

Responsiveness summary for NPDES Permit No. WA-002465-1 issued by Washington State Department of Ecology to Port Of Seattle for Seattle-Tacoma International Airport (Sea-Tac Airport), prepared by Lisa Zinner, P.E., February 20, 1998. Covers discharge of treated industrial wastewater and stormwater; public meeting held November 3, 1997 and public hearing November 10, 1997 at Burien Public

Whole Effluent Toxicity (WET) Program Evaluation prepared by Randall Marshall, WET Coordinator, Washington State Department of Ecology Water Quality Program, February 1998 (Publication #98-03). Evaluates implementation of Washington State’s WET regulation adopted October 1993, covering WET test review, effluent toxicity data, the state’s WET rule (WAC), EPA WET policy, SETAC Pellston Workshop (September 1995), EPA

State of Washington Department of Ecology notice dated 19 December 1997 of application for Water Quality Certification under Section 401 of the federal Clean Water Act of 1977 (PL 95-217), certifying compliance with Sections 301, 302, 303, 306, and 307, and for Certification of Consistency with the Washington State Coastal Zone Management Program under Section

WAC Chapter 173-201A establishes water quality standards for surface waters of the State of Washington under RCW 90.48, including definitions for AKART, background conditions, best management practices (BMP), fecal coliform, mixing zones, pH, turbidity, wetlands, nonpoint source pollution, and trophic state. Covers general water use and criteria classes (Class AA extraordinary), dissolved oxygen standards, fecal

This November 1997 environmental update from Washington State's Department of Ecology covers the Sea-Tac Airport third runway expansion project, detailing the FAA's air quality conformity determination, state environmental certification conditions, and required permits. The Port of Seattle was fined for soil erosion violations during construction of an employee parking lot, and was required to implement stormwater controls, groundwater studies, and erosion management plans. Several permits were under active review at the time, including an NPDES stormwater permit and a 404 wetland permit issued by the Army Corps of Engineers.