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KEI-F86-032A August 11, 1986 MHT-1 was drilled and completed to a total depth of 25. 0 feet. Free groundwater was encountered at a depth of 16. 0 feet and rose to 14 .5 feet following well completion. No evidence of petroleum p-oduczt odor was found. The well was installed with locking caps and the keys. The well was developed on June 13, 19OL and the water samples were taken on June 17, 1986. The well was checked for depth to water table, presence of odor and floating product. No sheen or free product as well as odor were noted in the well during our investigation. Prior to sampling, the well was purged at least four well-volumes from a surface bailer. Samples were then collected using a Teflon bailer, decanted into VDA bottles and stored on ice until delivered to the laboratory. The results of the analysis and monitoring of the well are in Table 1. HYDROGEOLOGY • Groundwater is present at the site at a depth of 11.0 feet below the surface. The subsurface formations below the site consist of silty clay with silty sand at depths of 16 to 19.5 feet. According to the Department of Water Resources, most of the groundwater in the San Joaquin County is usable. CONCLUSION AND DISCUSSION The analytical results show concentrations of disso?�ed hydrocarbons to be below the detection limit. Since no impact on the groundwater was noted, we recommend no further monitoring at this time unless the Regulatory Agencies request it This letter report, consisting of professional opinions and recommendations, has been made in accordance with generally accepted professional principles and practices existing for such work. This acknowledgment is in lieu of all warranties either express or implied. It should be noted that environmental changes, either naturally-occurring or artificially-induced, may s