EXH0534023626

• Northwest Regional Office, 3190. 160th Ave 5.E. • Bellevue, Washington 9800B.5452 • (425) 649-7000 April 21, 19gg TO: Steve Alexander Section Head TCP - NWRO THROUGH: Joe Hicke_' Unit Sup_ci_or TEC Unit FROM: Roger Nye Project Manager, Sea-Tac Airport Groundwater Study SUBJECT: REQUEST FOR CONTRACT SERVICES The Port of Seattle is conducting an extensive study of groundwater flow and - contaminant transport via groundwater flow at Sea-Tac Airport. The study is being conducted under an Agreed Order with Ecology. The purpose of thegroundwater study is to evaluate whether or not contamination in groundwater at Sea-Tac Airport poses a risk to surface waters and public water wells in the vicinity of the airport. __ The approach of the study is to (1) develop a conceptual model of groundwater at Sea-Tac Airport and surrounding vicinity, (2) perform computer modeling of groundwater flow and contaminant transport, and (3) conduct subsequent field work to verify the modeling and monitor for contamination as appropriate. The purpose of the contract services is to provide technical assistance regarding these elements of the study. The use of contract services is needed because: (1) There is keen interest in this project by state representatives, citizen's groups, communities, and public water districts local to the airport as per the many comments received during the public comment period for the Agreed Order. A significant element of the comments was that Ecology must independently evaluate all work performed by the Port of Seattle and its consultants. (2) The technical aspects of…

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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 [...]