PCHB078002396

quality and the natural environment are enormous... As the Board itself has acknowledged, "To provide the site for the third runway, the Port9 proposes to flU a canyon on the airport's west side with twenty (20) million cubic yards of fill." According to Ecology, this is equivalent to "40 football fields, each stacked 300 feet high with material.,,3 Underneath the 20 million cubic yards of fill, the Port proposes to construct an enormous rock drainfield to "capture" groundwater and transport it downslope in the hope of supporting the streams and wetlands below which would otherwise be starved of water as a result ....... of the massive fill and construction. The Port proposes several retaining walls to support portions of the fill embankments. The largest of these is a monolithic, mechanically stabilized earth (MSE) wall over 150 feet high and approaching one-third of a mile in length. Dubbed the "Great Wall of SeaTac," the Port proposes to construct the MSE wall on soils subject to liquefaction during earthquakes. 2] The proposed Project's potential impact on water quality and resources cannot be overstated. It would impact over 700 acres, create over 300 acres of new impervious surfaces with associated stormwater runoff, fill all or portions of 50 wetlands and permanently impact an additional twelve. If approved, it would obliterate 980 linear feet of fish-bearing stream, Miller Creek, relocating it in a fabric-lined ditch, and fill hundreds of feet of drainage channels in the 1ThisentirebriefgoestoIssue4. Notioe of Appeal CoyACC of Ecology's August 10,…

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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 [...]