AEHS Foundation 41st Annual International Conference on Soils, Sediment, Water and Energy

The AEHS Foundation's Annual International Conference on Soils, Sediments, Water and Energy brings together approximately 800 professionals from state and federal agencies, environmental engineering firms, consulting companies, industry leaders, and academia to offer a platform for knowledge sharing within the industry. 
 

 Come visit us at booth B22!

Platform Presentations

Welcome to the Vadose Zone: The Use of Lysimeters in the Evaluation of PFAS Sources at Three Sites in Northern New England

Tuesday, October 21, 11:00 -11:30 am, Room 164
Session 04: PFAS Vadose Zone Fate and Transport

Lysimeters are used to collect samples of pore water in the vadose zone and are useful when considering the potential for leaching of contaminants from soil. Multiple lysimeters were installed by GZA at three sites in New Hampshire during investigations to evaluate potential sources of per- and polyfluoroalkyl substance (PFAS), which had previously been detected in groundwater. The sampling devices were selected to provide site-specific and potentially more representative data for the evaluation of the leaching of PFAS from soils and biosolids-amended soils. The installation and use of lysimeters, along with related technical challenges, will be presented. Data obtained from lysimeter-collected pore water, compared with results from co-located soil, groundwater, and/or Synthetic Precipitation Leaching Procedure leachate, will also be discussed, along with lessons learned from the data analysis, particularly as they relate to the development of future sampling plans.

Presented by Jeremiah Duncan, Ph.D and James Wieck, P.G.

Poster Presentations

Analysis of Commingled PFAS Plumes in a Complex Hydrogeological Setting Utilizing Data Management, Analytics, and Visualization

Wednesday, October 22, 3:00 - 6:00 pm, Campus Center Auditorium

The historical operations at this site included railcar cleaning and refurbishing, followed by automotive salvaging. Additionally, the site is located adjacent to a former uranium ore processing facility from the US DOD Manhattan Project.  The site also has a history of several fires, which were likely extinguished using aqueous film forming foam (AFFF).  Groundwater investigations have identified a suite of PFAS in groundwater, which are not typically associated with AFFF.  Other contaminants identified at the site include gasoline, waste oil, PCBs, metals, chlorinated solvents, and other petroleum products (including tar/free products).

Presented by Stephanie Turkot and Jeremiah Duncan, Ph.D.

Session Chairs 

Session 16: Remediation

Wednesday, October 22, at 1:30 pm - 5:00 pm, Room 176
GZA's Stephanie Turkot and Jeremiah Duncan will co-chair this session.