TagStormwater(373)

Handwritten field notebook entries dated 1/28/01 documenting a site visit to Ace Airport View (DM1 – Monitoring Station) near Des Moines, referencing Des Moines Creek, SDS 1 outfall into SW associated wetlands, steep side terrain, oil boom present in unit 2, turbid water, black stones, water from outfall significantly turbid, Dr. Strand took samples at

Port of Seattle technical appendices (Volume 2) to the study examining effects of runway deicing on dissolved oxygen (DO) in receiving waters at Seattle-Tacoma International Airport, covering the 1999-2000 winter season. Includes QA/QC and field methods for Hydrolab instruments, Northwest Ponds DO profile data collection, continuous monitoring data assessment, tracer plots for each monitoring location,

This December 2000 email from Northwest Hydraulic Consultants summarizes technical concerns about Seattle-Tacoma International Airport's Industrial Wastewater System (IWS) and its effects on local waterways. The consultants warn that diverting large areas of stormwater runoff to the IWS is reducing natural water flows to Walker Creek and Des Moines Creek, and that lining the IWS storage lagoons may further diminish groundwater base flows to those streams. Additional concerns include undersized detention facilities, lack of continuous simulation modeling, and unresolved conflicts with FAA wildlife guidelines related to the proposed Third Lagoon expansion.

This December 2000 Comprehensive Stormwater Management Plan, prepared by Parametrix, Inc. for the Port of Seattle, outlines how Seattle-Tacoma International Airport planned to manage stormwater runoff as part of its Master Plan Update improvements. The plan covers water quantity and quality standards, drainage basin conditions, hydrologic modeling, and best management practices for both existing and future airport development areas. It addresses topics such as detention storage, treatment of industrial wastewater, wildlife safety near detention ponds, and protection of nearby waterways including Miller Creek and Des Moines Creek.

The 2000 Puget Sound Water Quality Management Plan, adopted December 14, 2000, outlines coordinated local, state, tribal, and federal actions to restore and protect the health of Puget Sound in Washington State. The plan introduces new programs addressing aquatic nuisance species and Georgia Basin water coordination, while substantially revising existing stormwater, habitat, and wetlands protection programs. It builds on earlier management plans dating back to 1987 and calls for renewed commitment to funding and policy improvements.

Floyd & Snider Inc. meeting notes summary covering Sea-Tac Airport Third Runway 401 Permit negotiations between Port Of Seattle and Washington State Department of Ecology (Ecology), October 2 through December 8, 2000. Documents master list of 401 Permit technical issues including Stormwater Master Plan detention sizing, basin acreage discrepancies, HSPF and KCRTS hydrological models, IWS

Floyd & Snider Inc. meeting notes summary covering 401 Permit negotiations between Port Of Seattle and Washington State Department of Ecology (Ecology) regarding the Sea-Tac Airport Third Runway and Stormwater Master Plan Update, October 2 through December 8, 2000. Document covers wetland issues only and includes a master list of 401 technical issues with resolution

This document summarizes technical negotiation meetings held between October and December 2000 regarding a 401 Water Quality Permit for the Port of Seattle's proposed third runway construction at Sea-Tac Airport. The discussions focused on resolving stormwater management issues, including detention pond sizing, basin hydrology, wetland impacts, and compliance with environmental regulations. A master list of technical issues was maintained jointly by the Port and the Washington State Department of Ecology to track the resolution status of each item prior to permit issuance.

Floyd & Snider Inc. meeting notes summary (draft for review) covering 401 Permit negotiations between the Port Of Seattle and Washington State Department of Ecology (Ecology) regarding the Sea-Tac Airport Stormwater Master Plan Update and third runway construction, October 2 through November 29, 2000. Document ECY00009383/AR029061 covers technical issues including detention sizing, basin acreage discrepancies,

Final draft meeting notes prepared by Kate Snider of Floyd & Snider Inc. from the Sea-Tac Airport Third Runway 401 Permit Negotiations meeting held December 8, 2000. Attendees included representatives from Washington State Department of Ecology (Ray Hellwig, Kevin Fitzpatrick, Ann Kenny, Dave Garland), Port Of Seattle (Elizabeth Leavitt, Michael Cheyne, Keith Smith), King County