Lower Issaquah Valley
Issaquah, Washington
Farallon Consulting, L.L.C.
April 3, 2020
Introduction
Farallon Consulting, L.L.C. (Farallon) has prepared this addendum (Addendum) to the Per- And Poly-Fluoroalkyl Substances Characterization Study Work Plan, Lower Issaquah Valley, Issaquah, Washington dated 2018, prepared by Farallon (2018) for Eastside Fire & Rescue (EFR) (Work Plan), to present the work elements and rationale to further characterize the nature and extent of per- and poly-fluoroalkyl substances (PFAS) in soil and groundwater in a portion of the Lower Issaquah Valley in Issaquah, Washington (Figure 1).
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