New Remediation Insights Presented at 2025 Battelle Sediments Conference

Our team is excited to head to Tampa, Florida for the Battelle Sediments Conference, January 27-30, 2025.

Over the past four years, there have been exciting new developments and ongoing progress in sediment remediation across the nation. This year, we’re excited to host, moderate, and present a comprehensive lineup of topics, from lessons learned to strategies for addressing evolving contamination regulations.

Visit us at booth 418 and join us as we explore the depths of our lakes, rivers, ports, harbors, working to restore their environmental health and economic vitality.

Presentations

• Expediting Cap Design Through Driver COC Identification at the Portland Harbor Superfund Site
  • Presenter Erin Hughes Jan. 28, 3:55 p.m.
  • The River Mile 9 West (RM9W) Project Area of the Portland Harbor Superfund Site (PHSS) in the Lower Willamette River in Portland, Oregon, requires active remediation. Methods include dredging to remove impacted sediment and capping sediment in place to prevent contaminant migration to the biologically active zone and surface water. Learn how a multiple-lines-of-evidence (MLOE) approach for identifying “Cap Design COCs” targets contaminants that should drive cap design, facilitating effective and targeted remediation efforts.
• Lower Fox River Statistical Methodology for Long-Term Monitoring Plan Update
  • Presenter Steve Lehrke, Jan. 28, 5:45 p.m.
  • The Fox River NRDA/PCB Releases Site, located within the 62.7-kilometer Lower Fox River, is divided into five operable units (OUs 1 through 5). Active remediation (dredging, sand cover, and capping) of PCB-contaminated sediments has been completed in OU1, OU3, and OU4, with OU2 and OU5 having a monitored natural attenuation remedy. Long-term monitoring (LTM) is now occurring in all OUs, designed to monitor improvements in water and fish tissue PCB concentrations. Learn how five exit criteria have set the requirements for elimination of monitoring.
• RM9W Sediment Interpolation Model Development, Uncertainty Evaluation, and Delineation of Sediment Management Areas
  • Presenter Steve Lehrke, Jan. 29, 11:20 a.m.
  • The in-river portion of the River Mile 9 West (RM9W) Project Area of the Portland Harbor Superfund Site (PHSS) is an approximately 10-mile reach of the Lower Willamette River in Portland, Oregon. USEPA indicated that additional data collection during remedial design (RD) would be necessary and that future SMA delineation should be conducted in 3D using combined surface and subsurface data. Learn how 3D interpolation modeling incorporating Pre-Design Investigation (PDI) data was performed to update the SMA delineation, and an uncertainty evaluation was completed.
• Assessing the Effectiveness of the Completed Lower Fox River Remedy
  • Presenter Tara Van Hoof, Jan. 29, 2:15 p.m.
  • The Lower Fox River (LFR) extends 39 miles from the outlet of Lake Winnebago over a series of locks and dams northward to the mouth of the river, where it discharges into Green Bay/Lake Michigan. Polychlorinated biphenyls (PCB) were discovered in the LFR in the 1970s. The regulatory process divided the site into five operable units (OUs). Learn about the effectiveness of cost-conscious and environmentally protective remedies.

Session Co-Chairs

• 10 Source ID, Loading Assessment, and Control with Jason Dittman, Jan. 29, 5:45 p.m.
• Monitoring and Evaluating Remedy Effectiveness with Steve Garbaciak, Jan. 29, 1 p.m.
• Innovative Characterization and Assessment Approaches with Alex Johnson, Jan. 29, 10:05 a.m.