TagPort Of Seattle(2609)

In a September 28, 1998 letter from the Port of Seattle to the Washington Department of Ecology, the Port provides a status update on stormwater management efforts at Seattle-Tacoma International Airport, covering detention, treatment, copper loading, and first flush analysis. The letter outlines proposed delivery dates for required reports and explains the complexity of treating stormwater runoff, including challenges related to mandatory FAA-regulated de-icing and anti-icing chemicals used on runways. It also addresses the status of ongoing wetland delineations and water rights reviews connected to the airport's planned third runway construction.

FAA Northwest Mountain Region letter dated September 2, 1998, from FAA to Brian R. Applebury, Chief Operations Division, Seattle District Corps of Engineers, regarding permit application 96-4-02325 for Port Of Seattle Third Runway at Seattle-Tacoma International Airport. Letter addresses compensatory wetland mitigation, bird/aircraft strike hazard, Advisory Circular AC 150/5200-33 ‘Hazardous Wildlife Attractants on or Near

Draft report prepared by Parametrix, Inc. for Port of Seattle regarding the Miller Creek Enhancement Program associated with Seattle-Tacoma International Airport Master Plan Update Improvements. Document AR 041760 covers Miller Creek relocation and enhancement, floodplain compensation, floodplain enhancement, Lora Lake buffer enhancement, and Miller Creek riparian buffer enhancement. Includes ecological assessment of Miller Creek (fish

Draft Revised Off-Site Wetland Mitigation Plan prepared by Parametrix, Inc. for Port Of Seattle regarding Seattle-Tacoma International Airport Master Plan Update Improvements, dated August 18, 1998 (project number 55-2912-01(03)). Document covers rationale for off-site habitat mitigation, mitigation site selection, revised project wetland impacts as of July 14, 1998, and revised mitigation plan design objectives. Includes

Draft Des Moines Creek Flow Augmentation Plan prepared by Parametrix, Inc. for Port Of Seattle, dated August 18, 1998, AR 041729. Document covers proposed design for flow augmentation of Des Moines Creek using existing wells, well upgrades, conveyance system, and stream discharge at Seattle-Tacoma International Airport (Sea-Tac Airport) Master Plan Update Improvements. Includes operational criteria,

This August 1998 email exchange between Ken Ludwa and Doug Henderson of Parametrix, Inc. discusses technical procedures for collecting stormwater samples at the Port of Seattle for metals and toxicity testing. Ludwa asks about required sample volumes, filtration timing, bottle preparation, and transfer procedures when using an autosampler during a storm event. Henderson advises that bioassays require 1 gallon and metals testing requires 2 liters, and provides guidance on sample chilling, glassware cleaning, and handling precautions.

This document maps the Part 150 Noise Monitoring Locations surrounding Seattle-Tacoma International Airport, as prepared by the Port of Seattle in August 1998. It identifies dozens of measurement sites categorized as permanent, semi-permanent, or temporary, spread across communities north and south of the airport including Burien, Des Moines, Normandy Park, Mercer Island, and as far north as the University District. Each site is listed with its specific street address or intersection, providing a detailed geographic record of how aircraft noise was tracked across the wider Seattle-Tacoma region.

A 1998 internal email from Ken Ludwa to Sabina Renn requests a literature search on best management practices (BMPs) for removing copper from stormwater, associated with a Port of Seattle project. The email provides an extensive list of search keywords covering filtration, chemical treatment, and various water-treatment technologies such as ion exchange, electrodialysis, and reverse osmosis. It also asks the library to locate two EPA publications on drinking water treatment for small communities.

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.

A July 1998 draft report prepared by Parametrix, Inc. for the Port of Seattle outlines a Stormwater Quality Management Plan for Sea-Tac International Airport's Master Plan improvements, including the proposed Third Runway. The plan documents why the Port chose bioswales over other Best Management Practice (BMP) alternatives, such as underground vaults, for managing stormwater runoff quality. The document was shared internally via email between Parametrix engineer Ken Ludwa and Jim Thomson for review and comment.