TagMiller Creek(260)

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 August 2002 permit application by the Port of Seattle outlines proposed Master Plan Update improvements at Seattle-Tacoma International Airport, including the construction of a third runway, expanded taxiways, cargo facilities, and terminal upgrades. The documents map both on-site and off-site wetland mitigation areas required to offset environmental impacts, with retaining walls and creek relocations used to minimize effects on wetlands and Miller Creek. The project spans multiple sections of King County, Washington, and includes detailed plans for stormwater detention, runway safety areas, and property acquisition boundaries.

This document is a legal filing from the Airport Communities Coalition (ACC) submitted to Washington State's Pollution Control Hearings Board in a case against the Washington State Department of Ecology and the Port of Seattle. It lists technical documents and studies relied upon by ACC's expert witnesses, covering topics such as retaining wall and slope alternatives affecting Miller Creek, seismic analysis of reinforced soil walls, and stormwater runoff management near Sea-Tac Airport. The referenced materials include engineering evaluations, water quality research, and stormwater best management practice guidelines relevant to the airport's expansion impacts.

Prefiled testimony (with errata corrections) of Joseph Brascher of AQUA TERRA Consultants submitted to the Pollution Control Hearings Board (PCHB No. 01-160) in the matter of Airport Communities Coalition (ACC) and Citizens Against Sea-Tac Expansion (CASE) v. State of Washington Department of Ecology and Port Of Seattle. Brascher testifies regarding low streamflow hydrologic modeling at

Port Of Seattle submits errata to the Pollution Control Hearings Board (PCHB 01-160) correcting prefiled testimony of James C. Kelley, Ph.D. and Joseph Brascher. Kelley’s testimony contained typographical errors on three pages; Brascher’s testimony omitted the final two lines of paragraph 39 due to computer pagination differences. Corrected testimony addresses wetland delineation, ACOE field review,

Prehearing brief filed by appellant Airport Communities Coalition (ACC) and intervenor-appellant Citizens Against Sea-Tac Expansion (CASE) in PCHB No. 01-160, appealing the Washington Department of Ecology’s August 10, 2001 Section 401 Clean Water Act certification for the Sea-Tac Airport Third Runway project. Documents the Port of Seattle’s proposal to fill a canyon with 20 million

This February 2002 draft document from King County Department of Natural Resources presents technical review comments on the Port of Seattle's December 2001 Low Streamflow Analysis and Summer Low Flow Impact Offset Facility Proposal. The review identifies several deficiencies in the hydrologic modeling for Walker Creek and Miller Creek, including inconsistencies in impervious area calculations, questionable vault-filling timelines, and concerns about the accuracy of observed streamflow data used for calibration. King County recommends additional refinements before approving the revised impact numbers, and suggests that Ecology and the Port establish a formal compliance oversight process.

King County Department of Natural Resources draft review comments (AR034844-034846) on the Port Of Seattle / Parametrix Inc. December 2001 Low Streamflow Analysis – Summer Low Flow Impact Offset Facility Proposal. Review evaluates HSPF hydrologic modeling, impact assessment, and conceptual design of low-flow offset facilities for Miller Creek and Walker Creek against Washington State Department

Parametrix-prepared maps (Sheets 1-3 of 8, AR 053454-053456, dated February 20, 2002) depicting existing and post-project conditions near Sea-Tac Airport, showing wetlands, impacted wetlands, impervious surfaces, stormwater detention facilities, stormwater vaults, mitigation area buffers, permanent impact areas, prior converted cropland, Miller Creek, parcel boundaries, permanent impact lines, MSE wall, and airport navigation aids. Maps cover

AR 053453. Map prepared by Parametrix, Inc. dated February 19, 2002, depicting future subbasins, watersheds, and detention facilities at Sea-Tac Airport. Shows water features including Miller Creek, Old Madres Creek, Walker Creek, detention facilities, proposed stormwater management facilities, reactive low-flow vaults and infiltration facilities, Master Plan impervious surfaces, future watershed boundaries, future subbasin boundaries, discharge