TagThird Runway(1098)

In September 2001, representatives from the Port of Seattle and the Washington Attorney General's office exchanged emails negotiating the language of Condition E(1)(b), which governs fill material criteria for an embankment construction project. The proposed language would allow the Port to use a 'drainage layer cover' design and to demonstrate fill suitability through Synthetic Precipitation Leaching Procedure (SPLP) testing as an alternative to standard fill limitations. Under the proposal, SPLP test results would be submitted to the Washington Department of Ecology at least ten business days before any fill placement.

This September 2001 draft settlement agreement between the Washington State Department of Ecology and the Port of Seattle addresses conditions attached to a Clean Water Act §401 Certification for the construction of a third runway at Seattle-Tacoma International Airport. The agreement clarifies and revises specific environmental conditions — including wetland mitigation, stormwater management, and groundwater monitoring requirements — that would remain in effect during and after construction. The Port agreed to file a formal appeal solely to implement the settlement, after which the parties would jointly request the Pollution Control Hearings Board approve the agreed-upon modifications and dismiss the appeal.

This September 2001 draft settlement agreement between the Washington State Department of Ecology and the Port of Seattle addresses the Port's appeal of a Clean Water Act §401 Certification issued for the construction of a third runway at Seattle-Tacoma International Airport. The agreement clarifies and revises several certification conditions related to wetland mitigation, stormwater management, and groundwater monitoring. Both parties agreed to jointly request that the Pollution Control Hearings Board amend the certification accordingly, after which the Port's appeal would be dismissed.

In August 2001, Washington State's Department of Ecology issued a 401 water quality certification to the Port of Seattle for the proposed SeaTac Third Runway, permitting construction of an 8,500-foot parallel runway involving fill of nearly 20 acres of wetlands and development of 700 acres of upland area. The certification imposed strict stormwater management and wetland mitigation conditions, including 201 acres of wetland creation and riparian restoration. The certification was subsequently appealed by the Airport Communities Coalition on August 23, 2001, with a hearing before the Pollution Control Hearings Board scheduled for March 2002.

This report, prepared by the Port of Seattle in September 2001, presents the findings of annual stormwater monitoring conducted at Seattle-Tacoma International Airport for the period July 1, 2000 through June 30, 2001. It covers water quality sampling results for pollutants including petroleum hydrocarbons, fecal coliforms, suspended solids, metals, and deicing-related contaminants collected from the airport's storm drainage system. The report documents sampling locations, storm events analyzed, and outfall inspections aimed at assessing the airport's environmental impact on surrounding waterways.

Administrative Record AR051194 — Primavera Systems schedule document for the 3rd Runway Program (000683 Master Plan) at Sea-Tac Airport, updated as of 01SEP01. Covers Program Management, Environmental Permitting, West Side Laydown Area CIP, Auburn Wetlands Fill & Mitigation – Grading, and Safety Areas 16R/16L. Activities include site acquisition, noise mitigation, DOE 401 permit, environmental permitting,

This technical memo evaluates whether lead and zinc levels found in cutthroat trout from Miller Creek pose a risk, arguing that standard tissue screening concentrations are not appropriate for trout. Using fish-specific toxicity data and bioconcentration factors, the authors derive alternative thresholds and conclude that measured metal levels in the trout fall well below harmful concentrations. The document recommends using species-specific methods rather than generic screening values when assessing metal risks to fish.

In 2001, the King County Superior Court issued findings of fact and conclusions of law in an eminent domain case where the Port of Seattle condemned a 2.44-acre parcel (Parcel 92) at 15416 Des Moines Memorial Drive in SeaTac to support its Third Runway project, using the land as a flood plain. The property, owned by RST Enterprises and zoned single-family residential (UL-7200), had been used for farming for at least 50 years and fell near the 65-70 LDN aircraft noise contours, making residential financing difficult. The court found that while a commercial rezone was possible long-term, it was not reasonably likely in the near future and would only have occurred due to the presence of the Third Runway.

Confidential discussion draft talking points prepared by Curt Hart (Ecology) for the Third Runway Section 401 water quality certification permit appeal filed by the Airport Communities Coalition (ACC) to the Washington State Pollution Control Hearings Board (PCHB). Document addresses Ecology’s defense of the permit issued to Port Of Seattle for construction of a third runway

The Airport Communities Coalition (ACC) — representing the cities of Burien, Des Moines, Federal Way, Normandy Park, and Tukwila, plus the Highline School District — filed a formal appeal in August 2001 challenging Washington State's approval of environmental permits for Seattle-Tacoma International Airport's proposed third runway. The appeal targets the Department of Ecology's Clean Water Act Section 401 Certification and Coastal Zone Management Act concurrency statement, both issued on August 10, 2001. ACC argued that the Port of Seattle's application contained scientific flaws and insufficient information to protect local waterways such as Des Moines Creek and Miller Creek that run through the surrounding communities.