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MULTIPHASE EXTRACTION(BIOSLURPING) <br /> OF JP4 IMPACTED SOIL AND GROUNDWATER <br /> KANPO PLAIN,JAPAN <br /> ' Ernest H.H. Shih <br /> Brewer Environmental Services, <br /> Honolulu, Hawaii <br /> David E. Griffin <br /> Brewer Environmental Services, <br /> Honolulu,Hawaii <br /> zt <br /> Abstract <br /> Brewer Environmental Services (BES) successfully completed a site investigation and initiated <br /> remediation of a JP-4 release at an aircraft refueling facility on the main island of Honshu, Japan. <br /> This project was unique due to the location, remedial approach selected and depth at which <br /> MPX (biosiurping was applied). <br /> A pilot study was not funded so the remedial approach chosen had to allow for a variety of <br /> possible field conditions. The design criteria for the system was to: remove the JP-4 layer <br /> floating on top of and dissolved in the shallow aquifer groundwater; remove the vapor phase JP-4 <br /> compounds in the vadose zone; provide a cleanup system with the most flexibility, easiest <br /> maintenance, and least impact to facility operations. <br /> BES selected and with Carbtrol inc., designed a containerized Multiphase Extraction (MPX) <br /> system_ The MPX system is designed to recover jet fuel in liquid, vapor and dissolved (in <br /> groundwater) phases via vacuum-pumping which utilizes a high vacuum liquid ring pump. <br /> Currently, JP-4 constituents are recovered from a depth of 50 feet in the nine wells using MPX. <br /> BES designed an innovative MPX wellhead which consists of multiple valving,multiple sampling <br /> ports, an extraction tube and a unique gasketed coupler. The wellhead design allows for the <br /> extraction tube to be adjusted to any length in the field to extract any combination of phases..A <br /> system for dynamic determination of water level was also developed. <br /> The containerized MPX approach allows the system to be shippable and modified to any set of <br /> phases that hydrocarbon contamination can be found, thereby reducing the impact of bypassing a <br /> pilot study phase. Simplicity of the single pump design means that all maintenance equipment <br /> are in the system - not downhole. A telemetry unit allows automatic maintenance callups and <br /> vital system functions to be monitored from anywhere in the world. <br /> E <br /> f 374 <br /> i <br /> t <br />