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OLF Coupeville On-Base PFAS Investigation



Across the country, the Navy has been conducting base-wide evaluations to identify additional potential PFAS releases. These evaluations are being conducted under the Navy’s Environmental Restoration Program which meets the requirements of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Following CERCLA, the Navy’s base-wide assessments are called preliminary assessments/site inspections, and their purpose is to verify, validate, and update the inventory of PFAS release sites aboard the installation for further investigation and cleanup. 


At NAS Whidbey Island, the Navy has completed preliminary assessment for Outlying Landing Field (OLF) Coupeville. The PA identified 3 sites with potential PFAS releases. A site inspection (SI) will be conducted at each site to determine the presence of PFAS in the soil and groundwater. The SI for OLF Coupeville was conducted in phases. For sites where PFAS is confirmed, a remedial investigation will be conducted. The purpose of a remedial investigation is to delineate the extent of PFAS and conduct human health and ecological risk assessments to determine if a remedial action is required. The Final PA, Sampling and Analysis Plans, technical memorandums, and reports are under ‘Documents’.  More information will be added to this website as it is available.



Final Aquifer Test Data Evaluation and Groundwater Modeling Report, September 2018.pdf

Final Evaluation of Per- and Polyfluoroalkyl Substances in Groundwater, May 2018.pdf

Final Preliminary Assessment for Per- and Polyfluoroalkyl Substances Coupeville, November 2018.pdf

Final SAP Site Inspection for Perfluorinated Compounds in Groundwater, January 2017.pdf

Final SAP Aquifer Testing, Drinking Water and Groundwater Sampling Keystone Hill Well, Dec 2017.pdf

Final SAP Supplemental Site Inspection, Coupeville, August 2019.pdf

OLF Coupeville SSI SAP Addendum, July 2020

Final Supplemental Site Inspection Report, Coupeville, October 2021

OLF Coupeville SSI Report Addendum, Jan 2022

OLF Coupeville PFAS RI SAP, Jan 2022


If you have any questions, please contact one of the Public Affairs Officers listed below.




Mike Welding

     Ken Johnson

Public Affairs Officer 

     Public Affairs Officer 

Naval Air Station Whidbey Island 

     Naval Facilities Engineering Command Northwest 



Office: 360-257-2962 

     Office: 360-396-6387 

Cell: 360-914-7915 

     Cell: 360-340-5592 

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