Inverse moderling to estimate LNAPL plume release timing

摘要

Methodologies are presented for dating releases of light nonaqeous phase liquids (LNAPLs) using an inverse modeling approach with simple anlaytical models. Models for LNAPL plume migration are presented to predict LNAPL plume velocity in the unsaturated and saturated zones as a function of basic soil and fluid properties. A relative in the unsaturated and saturated zones as a function of basic soil and fluid properties. A relative mobility factor is introduced for LNAPL movemnt at the water table that depends primarily on the van Genuchten n parameter (related to the breadth of the soil pore size distribution) and the magnitude of water table fluctuations.