Project objectives: to obtain a comprehensive set of data regarding the distribution of the jet fuel in the subsurface prior to the injection of Oxygen Release Compound (ORC), a bioenhancing product. The subsurface data were used to achieve precise placement of the ORC.
Technology utilized: Membrane Interface Probe (MIP) – a real-time subsurface logging tool that provides continuous readout of relative VOC concentrations and electrical conductivity of the soil.
Results summary: The use of a rapid site assessment tool such as the MIP allowed the client to obtain crucial contaminant distribution information during only two days immediately prior to the injection of the ORC. The data obtained with the high-resolution MIP system provided a distribution model dramatically different from the previous one based on data collected from the sampling of monitoring wells. The analysis of the data resulted in changes done to the injection work plan, particularly in regards to the total depth of borings and injection interval. It is believed that without such a precise distribution model, significant amounts of the ORC would have been wasted. The MIP logging was performed utilizing the same Geoprobe equipment that was later used for the ORC injection, and was accomplished in one mobilization with the injection crew. This provided ZEBRA’s client with a significant cost reduction. The Membrane Interface Probe (MIP) has been developed by Geoprobe Systems, Salina, KS. ORC is a registered trademark of Regenesis, San Clemente, CA. The field work was performed by crew and equipment provided by ZEBRA Environmental Corporation of Lynbrook, NY.