EXH AR023626: Contract Services Request — STIA Groundwater Study

In April 1999, the Washington State Department of Ecology requested contract services to independently review a groundwater study being conducted by the Port of Seattle at Sea-Tac Airport. The study aimed to determine whether groundwater contamination at the airport posed a risk to nearby surface waters and public water wells. Contract experts were needed to evaluate the Port's conceptual groundwater models, three-dimensional MODFLOW computer simulations, and proposed field monitoring work.

Notes

Memorandum dated April 21, 1999 from Roger Nye, Project Manager for the Sea-Tac Airport Groundwater Study, Washington State Department of Ecology (Ecology) Northwest Regional Office, to Steve Alexander, Section Head TCP-NWRO, through Joe Hickey, Unit Supervisor TEC Unit. Requests contract services to provide independent technical assistance evaluating Port Of Seattle groundwater contamination study conducted under an Agreed Order with Ecology. Scope covers evaluation of conceptual groundwater model, three-dimensional MODFLOW computer modeling, contaminant transport modeling, independent simulations, and fieldwork verification. Study purpose is to assess whether groundwater contamination at Sea-Tac Airport poses risk to surface waters and public water wells in the airport vicinity. Administrative Record numbers AR 023626–AR 023627.

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