EXH0508023054

Regulatory Section, Seattle District A Z O U S PO Box 3755 ENw_oN_Esr^L Seattle, WA 98124-2255 s c I E N CE S and Ms. Gail Terzi US Army Corps of Engineers Regulatory Section, Seattle District PO Box 3755 Seattle, WA 98124-2255 RE: Position of Wetland 44a in Relation to Proposed Temporary Interchange at SR509 and S. 176th Street. Dear Ms. Walker and Ms. Terzi, - As you know, I am an independent wetland scientist engaged by the Airport Communities Coalition ("ACC) to review matters relating to the Port of Seattle's proposed Third Runway project, including the SR 509 Temporary Interchange. In the process of reviewing documents and on-going correspondence regarding the Temporary Interchange at SR509 and S. 176th Street, have been monitoring changes in conditions to the extent possible from materials received through public disclosure requests. Several changes to the temporary interchange project have been made. There remains, however, a nagging and potentially serious problem regarding the actual and mapped position of SR509 in relation to Wetland 44a. In addition, there is continuing concern about how construction of the temporary interchange can occur without sedimentary discharges to wetlands, given the close proximity of wetlands 44 and 43 to the proposed ramps. Attached to this letter is a report submitted on June 5, 2000 regarding the discrepancy between the topography shown on the engineering drawings for SR509 by HNTB and what actually exists on the east side of SR509. It is possible that the Corps has received an explanation for…

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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 [...]