Abstract

Abstract: The Membrane Interface Probe (MIP) is a rapid, high-resolution in-situ VOC screening technology that provides real-time data about relative VOC concentrations and soil lithology, as well as the presence of ionic contaminants or a salt-water intrusion. The MIP Technology has been successfully utilized on a number of sites for the purposes of DNAPL delineation and characterization. The technology demonstrated good correlation with analytical results and provided significant cost savings by providing real-time information used for the optimization of the groundwater sampling program. Our MIP team has implemented a number or improvements to the design of the MIP equipment that resulted in significant reduction of on-site downtime and improved overall reliability. A set of Standard Operating Procedures (SOP), QA/QC procedures and the guidelines for the interpretation of the MIP system output have been developed during past two years. Direct Sensing tools have been first used for the purposes of subsurface environmental data acquisition by vendors and users of Cone Penetrometer Technology (CPT). A number of systems emerged, including LIF (Laser-Induced Fluorescence), ROS