Abstract The LNAPL contamination affecting an industrial area of southeastern Sicily (Italy) is reported herein as a case study to analyze some peculiarities on its spatial evolution. free-phase product light hydrocarbons, leaked from tank, deserved investigations due anomalous migration trend, which was not consistent with the static groundwater flow direction area. collection geological and h...

Natural source zone depletion (NSZD) is an emerging technique for sustainable and cost-effective bioremediation of light non-aqueous phase liquid (LNAPL) in oil spill sites. Depending on regulatory objectives, NSZD has the potential to be used as either primary or sole LNAPL management technique. To achieve this goal, rate (i.e., bulk mass depletion) should quantified accurately precisely. cert...

A non-linear, multi-objective optimization method is presented that seeks to maximize free product recovery of light non-aqueous phase liquids (LNAPLs) while minimizing operation cost. This approach combines FEHM (Finite Element Heat and Mass transfer code), a groundwater model that can simulate LNAPL transport in the subsurface, with two evolutionary algorithms: the genetic algorithm (GA) and ...

This paper discusses the verification and application of the three-dimensional (3-D) multiphase flow model presented by Huyakorn et al. (Part I in this issue) for assessing contamination due to subsurface releases of non-aqueous-phase liquids (NAPL's). Attention is focussed on situations involving one-, twoand three-dimensional flow through porous media. The model formulations and numerical sch...

The flow of two immiscible fluids in porous media is ubiquitous particularly in petroleum exploration and extraction. The displacement of one fluid by another immiscible with it represents a very important aspect in what is called enhanced oil recovery. Another example is related to the long-term sequestration of carbon dioxide, CO2, in deep geologic formations. In this technique, supercritical...

Several regulatory agencies recommend screening petroleum vapor intrusion (PVI) sites based on vertical distance between a hydrocarbon source in soil or groundwater and building foundation. U.S. Environmental Protection Agency (U.S. EPA) indicate the risk of PVI is minimal at buildings that are separated by more than 6 feet (1.8 m) from dissolved-phase 15 (4.6 light nonaqueous phase liquid (LNA...

The Groundwater Spatiotemporal Data Analysis Tool (GWSDAT) is a user-friendly, open source software tool used to analyze and report trends in groundwater quality monitoring data. GWSDAT is based on the open source statistical programming language R and Microsoft Excel. GWSDAT’s primary use is for interrogation and interpretation of groundwater monitoring data derived from contaminated sites. It...