TagWater Quality(478)

This King County map, dated March 15, 2004, identifies Walker Basin environmental projects including Estuary Improvements, Headwater Wetland Purchase and Protection, and Guardrail Painting. The map highlights key natural features such as lakes, ponds, streams, creeks, and wetlands within the Walker Basin boundary. Projects are categorized by type, including habitat and water quality initiatives, and are plotted against major streets and waterways in the area.

This King County map document, dated March 15, 2004, identifies and locates various Miller Creek basin improvement projects in the Seattle area, including flow control, habitat, and water quality initiatives. Featured projects include Estuary Improvements, Ambaum Pond, Miller Creek RDF Improvements, Culvert Modifications, Guardrail Painting and Asphalt Removal, and work at the City Light Property and Hermes Depression sites. The map serves as a visual reference for environmental and stormwater management efforts within the Miller Basin boundary.

This is a public comment form from a March 11, 2004 King County meeting about the Miller, Walker, and Salmon Creek Basin Plan, asking residents for input on salmon restoration efforts and environmental priorities. The form poses questions about whether it is worthwhile to restore fish runs in Salmon Creek given no fish have been seen for roughly 20 years, and how to prioritize restoration of Lake Hicks and related projects. It also asks residents how much they would be willing to contribute through increased taxes and fees to fund these efforts.

This King County map, dated December 8, 2003, identifies Potential Water Quality Regulatory Areas within the Walker Creek Basin, highlighting features such as streams, lakes and ponds, wetlands, potentially regulated parcels, and potentially regulated roads. The map was compiled by King County staff to support water quality planning and regulation in the basin. Note that while this document relates to King County environmental planning, it does not directly address Sea-Tac Airport noise policy.

This is a National Pollutant Discharge Elimination System (NPDES) waste discharge permit issued by the Washington State Department of Ecology to the Port of Seattle for SeaTac International Airport, originally effective October 1, 2003. The permit regulates the discharge of industrial wastewater and stormwater into receiving waters including Puget Sound, Des Moines Creek, Miller Creek, Walker Creek, and other local waterways. It sets effluent limits, monitoring requirements, and operational standards for the airport's Industrial Wastewater System to protect water quality in the surrounding region.

This document is a public responsiveness summary from Washington State's Department of Ecology regarding an NPDES wastewater discharge permit issued to the Port of Seattle for Seattle-Tacoma International Airport. It compiles and responds to comments received during a March 2003 public meeting and hearing, covering concerns about the airport's treated industrial wastewater, stormwater runoff, and construction runoff discharges. The summary addresses feedback from a range of stakeholders, including the Port of Seattle, local legislators, advocacy groups, and individual residents.

The Washington State Department of Ecology held a public workshop and hearing on March 31, 2003, to discuss the proposed reissuance of a water quality permit for Seattle-Tacoma International Airport. The permit covers industrial wastewater discharges to Puget Sound and stormwater runoff to nearby creeks from airport activities such as aircraft maintenance, fueling, washing, and deicing. Written public comments were accepted through April 15, 2003.

Exhibit 137 (AR 018038), WAC 173-201A-050, Title 173 Washington Administrative Code, Washington State Department of Ecology ambient water quality criteria footnotes. Covers dissolved metals criteria, weak acid dissociable cyanide method (Standard Methods 4500-CN I), total recoverable effluent limits, conversion factors, water effects ratio approach (USEPA Water Quality Standards Handbook December 1983), site-specific metals adjustment, seasonal

Book edited by Amanda L. Azous (Azous Environmental Sciences) and Richard R. Horner (Research Associate Professor, Landscape Architecture and Civil and Environmental Engineering, University of Washington, Seattle), published by Lewis Publishers (Boca Raton, London, New York, Washington D.C.). Title: ‘Wetlands and Urbanization: Implications for the Future.’ Administrative Record document AR 014000. Covers wetland ecology, urban

USGS report (Exhibit AR034767) on pesticides detected in urban stream water during rainstorms in King County, Washington, in collaboration with Washington State Department of Ecology and King County. Twenty-three of 98 pesticides sampled were detected across 12 study sites in 10 urban watersheds; concentrations of five insecticides (carbaryl, chlorpyrifos, Diazinon, gamma-HCH/Lindane, Malathion) exceeded NAS/NAE recommended