EXH1310053195

FROM: Michael Kenrick & Reese Hastings, Hart Crowser Inc. RE: Hydrologic Conditions and Wetland Hydrology Borrow Area 1 ch,ca_o 4978-62 Denver INTRODUCTION This memorandum provides an analysisof pre-construction and post-construction surface water and groundwater conditions at Borrow Area 1, which is one of the three proposed on- Fairbanks site borrow areas that are part of the Port of Seattle's Master Plan Update for Sea-Tac International Airport (STIA). The analysisincludes evaluations of changes to local surface water and groundwater conditions, and measures planned by the Port to avoid potential hydrologic impacts to Des Moines Creek and wetland resources. Jersey City The FinalEnvironmental Impact Statement (FEIS)prepared for STIA's Proposed Master Plan Update development actions (FAA 1996) discusseddevelopment of construction fill material borrow areas from eight identified sourceswithin property controlled by the Port. Further study by the Port has focused on the Borrow Areas designated 1, 3, and 4, which Suneau are proposed to provide a combined total of 6.7 million cubic yards of fill material for embankment construction. Drawing 1 - Site and Exploration Plan shows the layout of Borrow Area 1. Development of materials from Borrow Areas 3 and 4 and the mitigation of potential hydrologic impacts to wetlands has been addressed in separate memoranda, Lonq Beach including Sea-TacThird Runway Borrow Area 3 Preservation of Wetlands (Hart Crowser 2000) and the conceptual development and reclamation plan (Hart Crowser 2001). SUMMARY Portland Development of Borrow Area 1 has been planned to avoid disturbing wetlands to the maximum practical extent, and to avoid…

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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 [...]