Large scale and long term application of bioslurping: the case of a Greek petroleum refinery siteLarge scale and long term application of bioslurping: the case of a Greek petroleum refinery site Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-10-312007enThis paper presents the course and the remediation results of a 4-year application of bioslurping technology on the subsurface of a Greek petroleum refinery, which is still under full operation and has important and complicated subsurface contamination problems, mainly due to the presence of light non-aqueous phase liquids (LNAPL). About 55 wells are connected to the central bioslurping unit, while a mobile bioslurping unit is also used whenever and wherever is necessary. Moreover, there are about 120 additional wells for the monitoring of the subsurface of the facilities that cover a total area of 1,000,000 m(2). An integrated monitoring program has also been developed and applied on the site, including frequent LNAPL layer depth and thickness measurements, conduction of bail-down and recovery tests, sampling and chemical analysis of the free oil phase, etc., so as to evaluate the remediation technique's efficiency and ensure a prompt tracing of any new potential leak. Despite the occurrence of new leaks within the last 4 years and the observed entrapment of LNAPL in the vadoze zone, bioslurping has managed to greatly restrict the original plume within certain and relatively small parts of the refinery facilities.http://creativecommons.org/licenses/by/4.0/Journal of Hazardous Materials1493574-581 Gidarakos Evaggelos Γιδαρακος Ευαγγελος Aivalioti Maria Αϊβαλιωτη Μαρια Elsevier Bioslurping LNAPL Remediation Refinery