TagWater Quality(475)

Letter dated December 20, 2001 from Ken S. Berg, Manager, Western Washington Fish and Wildlife Office (U.S. Fish & Wildlife Service) to James M. Lynch, Stoel Rives LLP, providing 20 numbered comments on the Monitoring Plan for Embankment Fill Seepage submitted August 10, 2001 under Endangered Species Act consultation 1-3-00-F-1420 (Sea-Tac Airport Master Plan Update).

This December 2001 letter from the U.S. Fish and Wildlife Service's Western Washington office provides detailed comments on a Monitoring Plan for Embankment Fill Seepage related to a Sea-Tac Airport Master Plan Update, reviewed under the Endangered Species Act. The agency requested key revisions, including monitoring both seepage quality and quantity, beginning monitoring when seepage first occurs rather than after embankment completion, and ensuring groundwater wells are considered as a monitoring pathway. The letter also clarified that any exceedances of water quality criteria must be reported promptly, and that the Federal Aviation Administration—not the Port—would be responsible for reinitiating formal consultation.

Email from Jim Kelley (Parametrix, Inc.) to Ann Kenny dated December 19, 2001, transmitting a matrix document summarizing changes made to the Port Of Seattle Natural Resources Mitigation Plan (NRMP) to comply with Water Quality Certification #1996-4-02325 (401 Certification) issued September 21, 2001. The attached matrix details resolutions for required mitigation conditions including: monitoring duration

In December 2001, the Port of Seattle submitted a compliance update to the Washington State Department of Ecology documenting fill material placed at the Sea-Tac Airport third runway embankment during October and November 2001. The report lists all fill sources, quantities, and placement locations and elevations for that period, and corrects a calculation error in a previously submitted October summary table. The documentation was prepared to meet the requirements of Condition E of the 401 Water Quality Certification governing the third runway construction project.

In December 2001, Washington State Department of Ecology drafted a justification to amend its contract with engineering firm Shannon and Wilson, Inc., adding $57,412 to support ongoing review of the Port of Seattle's Natural Resource Mitigation Plan related to the proposed Third Runway project at Sea-Tac Airport. The amendment was needed to cover expert witness testimony before the Pollution Control Hearings Board following an appeal of Ecology's 401 Water Quality Certification, as well as field monitoring of wetland construction and review of revised mitigation documents. Funding for the contract was provided through an interagency agreement with the Port of Seattle and was not approved by the Port Commission until December 11, 2001.

In December 2001, Ann Kenny of the Washington Department of Ecology's Northwest Regional Office drafted a memo requesting that hydrogeologist Ching-Pi Wang review a groundwater and seepage monitoring plan submitted by the Port of Seattle for the proposed third runway at Seattle-Tacoma International Airport. The plan, titled 'Third Runway Embankment Seepage and Groundwater Monitoring Plan,' was submitted on November 16, 2001, and required expert review before Ecology could approve it. Wang was asked to provide written comments on the plan's adequacy and any recommended changes by January 18, 2002.

Letter dated December 5, 2001 from Sarah Suggs, Wetlands Specialist, Washington State Department of Ecology (Northwest Regional Office) to Grant Beck, Director, San Juan County Permit Center, regarding the Ayer property wetland restoration proposal on Orcas Island. Ecology characterizes the proposal as a wetland conversion (not restoration) under Chapter 90.48 RCW and Chapter 173-201A WAC,

This December 2001 technical report, prepared for the Port of Seattle, analyzes low streamflow conditions around Seattle-Tacoma International Airport and proposes a facility to offset the impact of airport Master Plan construction on summer low flows in nearby creeks. It includes hydrologic modeling, water quality design considerations, and an operation and monitoring plan for a stormwater storage and release system intended to maintain stream levels during dry summer months. Note that while archived alongside airport planning documents, this report focuses on water resources and stream impact mitigation rather than noise policy.

Report prepared by Parametrix, Inc. with Aqua Terra Consultants, Earth Tech, Inc., Foster Wheeler Environmental Corporation, HNTB, and Pacific Groundwater Group for Port Of Seattle regarding Sea-Tac Airport Master Plan Update Improvements. Analyzes summer low streamflow impacts to Walker Creek and Des Moines Creek from planned airport projects and proposes an offset facility using underground

Parametrix, Inc. report prepared for Port of Seattle, Seattle-Tacoma International Airport Master Plan Update Improvements, December 2001. AR 052659/052660/052661. Volume 1 includes main text and Appendices B through J. Sub-consultants include Aqua Terra Consultants, Earth Tech Inc., Foster Wheeler Environmental Corporation, HNTB, and Pacific Groundwater Group. Addresses low streamflow analysis and summer low flow impact