Geosyntec Consultants
September 13, 2021
Introduction
Geosyntec Consultants (Geosyntec) has prepared this Groundwater Flow and Per- and Poly- Fluoroalkyl Substances (PFAS) Transport Modeling Report (Report) on behalf of the City of Issaquah (City). Geosyntec performed this work on behalf of the City, Eastside Fire and Rescue (EFR), and the Washington State Department of Ecology (Ecology), collectively referred to as the Issaquah Valley PFAS Partnership (the Partnership). The Partnership is conducting additional investigation of PFAS contamination of the Issaquah Valley Aquifer, through legislative funding provided to Ecology. Farallon Consulting, LLC (Farallon), on behalf of EFR, is the leading consultant for the field investigations that support the model development.