The objective of this Statement of Need was to improve the understanding and management of concrete and asphalt construction materials impacted by historical releases of aqueous film-forming foam containing per- and polyfluoroalkyl substances (PFAS). Specific objectives included:

• Assessment of the leaching potential of PFAS from historically impacted concrete or asphalt either through surface run-off or leaching through impacted materials to soils and groundwater.
• Determination of the magnitude of PFAS loading to the environment from impacted concrete and asphalt.
• Development of methodologies or technologies for in-place management of impacted concrete and asphalt.
• Assessment of the potential for beneficial re-use of impacted materials.

Proposers should have addressed one or more of the objectives. Research proposals could involve laboratory-, bench-, and/or field-scale studies. Construction materials of interest included concrete and asphalt; proposals were required to specify which material would be assessed, although the preference was for both materials to be included in proposed efforts. All analytical work was required to follow Draft Method 1633 (Analysis of Per- and Polyfluoroalkyl Substances (PFAS) in Aqueous, Solid, Biosolids, and Tissue Samples by LC-MS/MS).

Funded projects will appear below as project overviews are posted to the website.