TagPollution Control Hearings Board(1532)

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,

Memorandum dated August 13, 1998 from Jamie Beaver and Allen Jones at Hart Crowser, Inc. to Michael Bailey (Hart Crowser), CC Pete Douglass (Peter M. Douglass, Inc.), project J-4978-01. Presents soil strength parameters for Phase II embankment stability analysis using UTEXAS3 program. Covers SPT N-value correlations for shear strength, friction angle (cohesionless soils including sands

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.

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.

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

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.

King County Superior Court Memorandum Ruling by Judge Robert H. Alsdorf on Application of WAC Chapter 365-195 (Procedural Criteria for Adopting Comprehensive Plans and Development Regulations) in consolidated cases No. 96-2-20357-2 KNT, No. 97-2-13908-2 KNT, No. 97-2-22276-1 KNT, No. 98-2-04911-1 KNT. City of Des Moines, Airport Communities Coalition, and other plaintiff-petitioners argued against the Port