TagThird Runway(1068)

HartCrowser report prepared for Port of Seattle, September 21, 2001, project 4978-54. Topsoil Management Plan for Borrow Area 4 at Seattle-Tacoma International Airport (STIA), City of SeaTac, Washington, in support of third runway embankment construction. Documents arsenic contamination in topsoil from ASARCO copper smelter airborne emissions plume (Tacoma smelter plume), chemical analysis results, comparison to

Hart Crowser, Inc. subsurface conditions data report (project 4978-28) prepared for HNTB, dated September 21, 2001, covering Phase 5 Fill and Subgrade Improvement for the Third Runway Embankment at Sea-Tac International Airport, SeaTac, Washington. Report authored by Carsten Becker (E.I.T., Senior Staff Geotechnical Engineer) and Michael J. Bailey (P.E., Project Manager). Covers geologic and hydrogeologic

Researchers tested several filtration media, including leaf compost (CSF®) and soybean hulls, for their ability to remove zinc and reduce toxicity from stormwater runoff at Seattle-Tacoma International Airport. The study was prompted by prior water quality monitoring that linked stormwater toxicity to zinc from building materials in certain airport drainage areas. Results from these controlled laboratory tests were used to select the best-performing media for future on-site stormwater treatment trials at the airport.

Washington State Department of Ecology Water Quality Certification Order #1996-4-02325 (Amended-1), dated September 21, 2001, issued to Port Of Seattle (attention Elizabeth Leavitt) for construction of a third runway and related projects at Seattle-Tacoma International Airport (STIA). Certifies compliance with Clean Water Act Sections 301, 302, 303, 306, and 307, RCW 90.48.260, and WAC 173-201A.

In a September 21, 2001 fax to John Drabek, Permit Manager at the Washington State Department of Ecology's Northwest Regional Office, Greg Wingard of Smith & Lowney followed up on a delayed State Public Disclosure Request concerning environmental monitoring data from construction activities at the airport. The letter clarifies that documents requested as far back as June 5, 2001—including upstream/downstream construction monitoring records and turbidity discharge data—had not yet been produced, despite being roughly three months overdue. Wingard requested that the documents be made available no later than September 25, 2001, and offered to pick them up in person to avoid further delay.

Washington State Department of Ecology Water Quality Certification Order #1996-4-02325 (Amended-1), dated September 21, 2001, issued to Port Of Seattle (Attn: Elizabeth Leavitt) for construction of a third runway and related projects at Seattle-Tacoma International Airport (STIA). Certifies compliance with Clean Water Act Sections 301, 302, 303, 306, and 307; FWPCA Section 401; RCW 90.48.260;

Pollution Control Hearings Board (PCHB) Agreement and Order Re Rescission of 401 Certification, PCHB Case Nos. 01-133 and 01-150, involving Port Of Seattle and Airport Communities Coalition (ACC) as appellants and Washington State Department of Ecology as respondent. The 401 Certification (Ecology Order No. 1996-4-02325) issued August 10, 2001 under Section 401 of the Federal

Letter dated September 19, 2001 from Lowell H. Johnson, Manager, FAA Airports Division, Northwest Mountain Region, to Thomas F. Mueller, U.S. Army Corps of Engineers, Regulatory Branch, Seattle District Office, responding to Mueller’s August 15, 2001 inquiry comparing operational data to SIMMOD model predictions for Sea-Tac Airport (KSEA). Enclosure paper titled ‘Delay at Seattle-Tacoma International

A September 18, 2001 phone call memo from Ann Kenny of the Washington Department of Ecology (WDOE) outlines a legal dispute over the 3rd Runway permit at Sea-Tac Airport, in which the Airport Communities Coalition (ACC) filed a Motion for Stay claiming an imminent environmental threat. WDOE attorneys requested King County provide technical rebuttals to the ACC's expert statements by October 1, 2001, but King County lacked the necessary documents, a contract amendment, and adequate time to respond. WDOE warned it might subpoena County staff if they did not commit to providing the requested support.

This 2001 Natural Resource Mitigation Plan document for Seattle-Tacoma International Airport outlines proposed environmental mitigation actions associated with construction of a new third runway and related facilities. It details a sequenced approach to avoiding, minimizing, and compensating for impacts to wetlands, Miller Creek, Des Moines Creek, and other natural resources. Key measures include constructing retaining walls to protect wetlands, restoring the Vacca Farm floodplain, establishing forested stream buffers, and providing a $300,000 trust fund for fisheries habitat enhancement.