TagMaster Plan(55)

This August 2002 document outlines proposed Master Plan Update improvements at Seattle-Tacoma International Airport (Sea-Tac), submitted by the Port of Seattle. It details construction projects including a third runway, runway safety areas, terminal expansions, and air cargo facilities, along with wetland impact mitigation measures in the Miller Creek Basin. The plans include on-site and off-site wetland mitigation areas, MSE retaining walls to minimize environmental impacts, and creek relocations across multiple sections of King County, Washington.

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.

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

Port of Seattle Natural Resource Mitigation Plan figure (AR017604, Exhibit 46, dated 12-20-01) showing Master Plan Update Improvement Projects at Seattle-Tacoma International Airport (STIA). Map depicts Third Runway construction area, Runway Safety Areas (RSAs), MSE retaining walls used to avoid and minimize wetland impacts, relocated section of Miller Creek, Miller Creek Detention Facility, Lora Lake,

Final Natural Resource Mitigation Plan (NRMP) prepared by Parametrix, Inc. for the Port Of Seattle, covering Master Plan Update Improvements at Seattle-Tacoma International Airport (Sea-Tac Airport). Document number 556-2912-001 (03), dated November 2001. Administrative Record document AR 029275–AR 029277.

Report prepared by Parametrix, Inc. for Port Of Seattle regarding the Miller Creek Riparian Corridor and Instream Enhancement Project and Wetland A17 Restoration, part of the Seattle-Tacoma International Airport Master Plan Update Improvements. Document AR 052286 covers wetland mitigation design, Army Corps of Engineers requirements, buffer averaging, hydrology, soils, vegetation, grading, landscape plan, performance standards,

Transmittal form dated July 12, 2001 from Jim Kelley at Parametrix, Inc. (Kirkland, WA) to Ann Kenny at Washington Department of Ecology NW Regional Office (Bellevue, WA), project number 556-2912-001 (03), transmitting materials for the Sea-Tac International Airport Master Plan Update Improvements. Materials include three copies of STIA Wetland Photographs and Maps report, and four

Wetland photographs and maps prepared by Parametrix, Inc. for the Port Of Seattle, documenting wetlands and other Waters of the U.S. in the Miller Creek Basin near Seattle-Tacoma International Airport (STIA) as part of the Master Plan Update Improvements. AR 050379–050381. Includes photo point map showing delineated wetlands verified and not verified by ACOE (Army

Parametrix, Inc. wetland functional analysis forms prepared for the Port Of Seattle Master Plan Update, documenting wetland attributes for wetlands A6-A7-A8 and A12-A13-A18, dated 4/5/01, investigator W.K./Mil. Records presence/absence of wetland attributes including vegetation classes (Cowardin), forested wetland coverage (80%, 30%), impervious surface (>60% urban/runway), buffer conditions, seasonal ponding, emergent vegetation, seeps and springs, flooding

Final Natural Resource Mitigation Plan prepared by Parametrix, Inc. for Port Of Seattle covering Master Plan Update Improvements at Seattle-Tacoma International Airport, dated December 2000. Filed as part of PCHB No. 01-133, Port of Seattle’s memo opposing ACC’s motion for stay, Volume 3 of 3, received by Environmental Hearings Office on October 1, 2001. Includes