EXH0464022955

5808 Lake Washington Blvd. NE, Suite 200 Kirk]and,Washington 98033-7350 '"_ Aqu_Terra Consultants 6140 CapitalBlvd. SE, Suited Tumwater, Washington 98501 Earth Tech, Inc. 10800NE 8_ Street, Seventh Hoor Bellevue, Washington 98004 Foster Wheeler Environmental Corporation 12100/fie 195_ Street, Suite200 Bothell, Washin'gton 98011 600 I08_ Avenue NE, Suite 400 Bellevne, Washington 98004 Pacific Groundwater Group 2377 Eastlake Avenue East Seattle,Washington98102 556-2912-001 (28]3) EXHIBITNO._.,_I q-at.o.z I M.Green i ! ...... AR 022955 EXECUTIVE SUMMARY "" ) This report presents the analyses performed to estimate the timing and volume of discharges to local receiving streams and wetlands during low-flow periods from Seattle-Tacoma International Airport (STIA) eonslderin 8 improvements defined in the Port of Seattle's Master Plan Update. This report also presents a Flow Impact Offset FaGility Plan, weigh is the Port'_ proposal to offs_ impacts to flows in the receiving waters during annual low-streamf!ow periods, typically experienced in late summer/early fall The plan is based on a detailed evaluation of the hydrologic impacts of the proposed third nmway embankment and associated non-hydrologic impacts (cessation of water use and removal of septic tanlr_on properties purchased by the Port) on streamflow in Miller, Walker, and Des Moines Creeks. This report is submitted in response to condition 1.1 of the Water Quality Certification (#1996-4-02325 [Amended - 1]) issued by the W_h_ngton State Department of Ecology (Ecology) on September 21, 2001. The report builds upon previous reports by Earth Teeh (December 2000), Pacific Groundwater Group (June 2000, August 2001), and Parametfix (December 2000, July 2001). Earth Tech, Pacific…

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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 [...]