RAPT™ – Rapid Assessment of PFAS Transport

The properties of PFAS compounds and their range of concentrations present unique challenges to understanding PFAS transport and fate in groundwater. Single digit or low parts per trillion cleanup goals require a dense model mesh to produce reliable simulation results when source area concentrations can be 6 to 9 orders of magnitude higher than the cleanup goals.

HGL developed a mass-conserved particle tracking module to permit rapid assessment of PFAS transport within groundwater models without the need for a dense model mesh. Compound-specific transport properties are assigned to particles, which are then simulated within the groundwater flow system to provide an understanding of PFAS transport and to support decisions pertaining to the investigation and remediation of PFAS-impacted groundwater.