Ten groundwater samples were collected at the Hoe Creek II underground coal gasification site seven years after gasification. The samples were collected from the Felix No. 1 and Felix No. 2 coal seam aquifers along a east-southeasterly trend extending from the burn cavity to 578 feet away. The samples were extracted with methylene chloride through an organophilic-hydrophilic extraction procedure. Organophilic-acid, -base, and-neutral subfractions were analyzed for phenols, low-molecular-weight aromatic hydrocarbons, alkyl-pyridines, and aniline by capillary column gas chromatography. Levels of organic contamination for these compounds were highest in wells located closest to the burn cavity margin and lower in outlying wells. The most predominant organic compounds present in the samples were xylenol isomers and/or ethylphenol isomers, and low-molecular-weight aromatic hydrocarbons such as napthalene and alkylated benzenes. These compounds were similar to those observed in water soluble fractions of UCG by-product tars and oils. A drop in phenol concentration from 10,000 ppb to 2.7 ppb during a six year period was observed in a well located near the Hoe Creek II burn cavity. This change indicated phenol was removed by advective groundwater flow or by biodegradation.