Leigh Creek Energy has proposed a trial underground coal gasification (UCG) plant at Leigh Creek, within the old mine site. UCG is also referred to as in-situ gasification (ISG), for an explanation of UCG see FAQ brochure on the Department of the Premier and Cabinet - Energy Resources Division (DPC-ERD) web site1. This proposed demonstration plant will involve the establishment of a single gasifier chamber and associated above-ground infrastructure to produce synthesis gas (commonly referred to as syngas) for a short period of time (approximately 2-3 months). The trial will test both the syngas composition and process performance. The results will inform a possible commercial development. This report details the Department of the Premier and Cabinet - Energy Resources Division’s (DPC-ERD') review of the Environmental Impact Report and other information to assess this application.