"5.6.3 Chinchilla Project, Australia According to Linc Energy, Ltd. and Ergo-Exergy, there has been no groundwater contamination from the Chinchilla UCG pilot operation. This was accomplished by optimizing operating conditions such that the pressure in the gasifier was kept lower than pressure in the coal seam and in the surrounding strata (Figure 5-11). As a result, there is no drive for groundwater flow from the gasifier chamber or loss of product or contaminants into the surroundings (Figure 5-12). The site, subject to annual audit, has been in full compliance with the environmental management plan and applicable environmental agency regulations. One key feature of DRAFT 81 the Chinchilla Project was the continuous groundwater monitoring (by 19 monitoring wells) in the vicinity of the project. According to Blinderman (2003a, 2003b), the data showed no groundwater contamination, surface contamination, or subsidence. Figure 5-11: Illustration of UCG process operating at negative pressure. (From Blinderman and Jones, 2002.) Figure"
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