Removal Actions and Investigations, Chernofski Harbor Supply and Storage FUDS, Chernofski Harbor, Unalaska, Alaska

Brice is performing a complex remedial investigation (RI) and removal action (RA) at several areas of concern (AOCs) located across the Chernofski Harbor Supply and Storage Formerly Used Defense Site (FUDS). The contract is a Containerized Hazardous, Toxic, and Radioactive Waste (CON/HTRW) project conducted in accordance with the National Environmental Policy Act (NEPA) and State of Alaska regulations and guidance.

At project kickoff, we performed a comprehensive site visit to support the preparation of CERCLA pre-decisional planning documents for investigations at six sites located across the FUDS, a background metals evaluation, and RAs for nine FUDS projects. The site visit included a cultural resources evaluation; well installation and sampling and transducer installation; soil sampling; and a baseline drone survey. We also evaluated site access and logistics by inspecting the access roads and paths and performing visual inspections.

Brice performed two types of investigations: investigations involving the drill rig, and all other investigations. Drill rig investigations include Ultra-Violet Optical Screening Tool (UVOST) screening and direct push borings (soil borings, monitoring wells, and temporary well points. We collected soil, sediment, groundwater, surface water, and porewater samples. In accordance with the project goals and objectives, DQOs, and regulatory requirements, we are evaluating the data with different screening criteria depending on the task and stage of the cleanup process. Brice then excavated and packaged 2,700 tons of POL- and lead-contaminated soil from multiple excavations.

Performance Highlights

• Received all Exceptional and Very Good ratings in a PPQ dated May 2022
• Commended by Ron Broyles, USACE Alaska Environmental Engineering/COR, “…the work that Brice has completed to date has been very good. The USACE Alaska District team is very pleased with the fieldwork progress to date. The contractor’s PM is very detail-oriented and is able to stay on top of a very complicated project.”