BB&E has completed Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Preliminary Assessments (PAs) for Per- and Poly-Fluoroalkyl Substances (PFAS) at 59 USCG Units located throughout Alaska, including several remote locations. BB&E has assessed past and current use/releases of PFAS compounds at various locations including air stations, air operation facilities, bases, former long-range navigation (LORAN) stations, and seasonal access locations. We also provided support for interfacing with regulatory agencies and stakeholders as necessary to respond to PFAS- related inquiries. Tasks included PA research, PA site visits, Site Investigations (SIs) recommendations based on receptor and exposure evaluation, and PA reporting. Reporting followed the relevant aspects of CERCLA Guidance focusing on documentation of records searches, interviews, and site visits; identification of areas where Aqueous Film-Forming Foam (AFFF) may have been used, stored, or released and suspected release volumes; identification of potential receptor exposure pathways to human or ecological receptors and the environment; evaluation of the distance of release locations to the closest drinking water supplies; and path forward recommendations.
