B038 THE USE OF BOREHOLE RADAR TOMOGRAPHY TO MONITOR A STEAM INJECTION PILOT STUDY IN A CONTAMINATED FRACTURED LIMESTONE (MAINE USA) 1 Colette Grégoire (*) John W. Lane Jr. (**) and Peter K. Joesten (**) (*) KULeuven Department Civil Engineering Kasteelpark Arenberg 40 3001 Leuven Belgium [email protected] (**) U.S. Geological Survey Branch of Geophysics 11 Sherman Place Unit 5015 Storrs Mansfield CT 06269 United States Abstract Steam-enhanced remediation (SER) has been successfully used to remove DNAPL and LNAPL contaminants from porous media. Between August and November of 2002 SER was tested in a fractured limestone at the former Loring Air