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Ault Field (including Area 6)

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 (PA) for Ault Field (including the Area 6 Landfill). The PA identified 35 sites with known or potential PFAS releases that should be further evaluated in a Site Inspection (SI). The Navy has completed the SIs for all 35 sites, and 27 of those sites are proceeding to the next step in the CERCLA process, the remedial investigation. These sites include: the Current Fire Training School, Former Runway Fire School (Area 31), Former Area 6 Landfill, Ault Field Airfield (includes 21 sites), and the Ault Field  Wastewater Treatment Area (includes three sites). 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 Sampling and Analysis Plan, Phase I Site Investigation for PFAS, Ault Field, February 2018.pdf
Final Preliminary Assessment for Per- and Polyfluoroalkyl Substances, Ault Field, November 2018.pdf
Final Sampling and Analysis Plan, Phase 2 Site Inspection, Ault Field, November 2019.pdf
Final Technical Memorandum Evaluation of PFAS in Groundwater, Ault Field, March 2019.pdf
Final Sampling and Analysis Plan Site Inspection of PFAS at Area 6, Nov 2017.pdf
Final Technical Memorandum Evaluation for PFAS, 1,4-Dioxane, and Vinyl Chloride at Area 6.pdf
Part 1 of 3 Phase 2 Site Inspection Ault Field Sep 21
PART 2 of 3 Phase 2 Site Inspection Ault Field Sep 21.pdf
PART 3 of 3 Phase 2 Site Inspection Ault Field Sep 21.pdf
Area 31, Former Runway Fire School, PFAS RI SAP, March 2022
Area 6, Former Landfill, PFAS RI SAP, November 2022


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


Mike Welding, NASWI Public Affairs Officer
Office: 360-257-2962
Mobile: 360-914-7915 

Sarah Lincoln, NAVFAC Northwest Public Affairs Officer
Office: 360-396-6387 
Mobile: 360-340-5592

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