EXH0097017822

Subject: Briefing Decision - for the Port of Seattle Sea=Tac International Airport Third Runway Proposals - (F_.xpandedVersion for Tuesday Meeting) Following an extensive and thorough regulatory review and decision-making process, we have reached a recommendation to approve a 401 Water Quality Certification for the Port of Seattle's ('Port) Third Runway and related project proposals. The Port has submitted plans that, together with what we believe are necessary 401 conditions, satisfy requirements pursuant to all pertinent environmental laws and regulations. The Port's Stormwater Management and Low-Flow Management Plans (SMP and LFMP), and Natural Resource Mitigation Plan (NRMP), togetherwith our proposed conditions regarding construction Best Management Practices (BMPs), additional natural resource mitigation, and requirements for clean fill, give us reasonable assurance water quality and other aquatic resources will be protected. Below is a summary of the Port's proposals; known and expected project impacts; permit requirements; agency environmental objectives; mitigation requirements; and major areas of concern surrounding the decision-making process/adequacy of the Port's proposals. THE PORT'S PROPOSAL: Implement selected projects from the Port of Seattle ('POS) Sea-Tac International Airport (STIA) list of Master Plan improvements. Specifically: Construct an 8,500 - f_allel third runway west of existing runways at STIA. Const_e_TRT,,awa.y...._f_SAs) on the north end of existing runways; construct t_.._th Aviation Supp-ort _g'g_ASA) for increased atrpo_.nsuppon and maintenance facilities. LOCATIOn: "-/-- ACe . King County,City of SeaTac. The Green-Duwamish Watershed/Basin, Des Moines Creek, Miller Creek and Walker Creek sub-basins. City of Auburn, is the location for the Port's off-site wetland mitigation. IMPACTS: Implementations development…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]