Barr provided assessment and remediation services to the site owner of a 100-acre, former wood-treating facility where creosote and pentachlorophenol had contaminated soil and groundwater. Working with state and federal regulatory agencies and agency partners to identify and select the most cost-effective soil and groundwater remedies, we conducted soil, groundwater, and site remedial investigations; evaluated human-health and ecological risks; studied the feasibility of remedial alternatives; supported the site owner in complex regulatory negotiations; and prepared plans and specifications for the proposed cleanup. Barr also helped the client prepare a submittal to the National Remedy Review Board and developed a supplemental feasibility study to evaluate alternatives further based on modified soil volumes.
For this project, more than 470 acres of aquatic and terrestrial habitat were investigated and 390 samples (water, sediment, soils, wild rice, plants, fish mussels, crayfish, and earthworms) were analyzed for contaminants such as dioxins, metals, semi-volatile compounds, and polychlorinated biphenyl (PCB) congeners. In all, Barr has analyzed more than 6,000 samples from this site since 1980.
The U.S. EPA is developing a Record of Decision based on the remedial investigations and feasibility studies that Barr developed for the site.