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FIELD PROCEDURES Site Safety Pian This plan describes the safety requirements for field work performed at the site. The site safety plan is applicable to personnel of Smith Technology Corporation who perform the field work. A copy of the site safety plan is available for reference by appropriate parties during the work. The Smith Technology onsite representative of acts as the Site Safety Officer. Groundwater Sampling The static water level in each well is measured to the nearest 0.01 foot with a Solinst or similar electric water-level indicator cleaned with a laboratory-grade non-phosphate detergent and clean tap or deionized water before use in each well. A clean bailer is used to obtain a sample from the surface of the water in the well for subjective analysis of hydrocarbons. The sample is retrieved and examined for floating product, sheen, color, and clarity. Approximately 3 to 5 well volumes are purged from each well with a pre-washed submersible pump or bailer to allow sampling of representative formation water. All down hole equipment is cleaned with a laboratory-grade non-phosphate detergent and water before use in each well. The wells are purged until pH, temperature, and electrical conductivity of the water have stabilized, as measured by portable meters calibrated to a standard buffer and conductivity standard. If the well is pumped or bailed dry during purging, the water level is allowed to recover to at least 80 percent of the initial water level prior to sampling. The groundwater purged during the sampling is temporarily stored in 55-gallon liquid waste drums approved for this use by the DOT until suitable disposal options are selected based on analytical results. Disposal of water at an appropriate disposal facility is the responsibility of the client. A sample of the formation water then is retrieved from the surface of the water in each of the wells with a dedicated disposable bailer and slowly transferred to laboratory-cleaned sample containers. Evaluatine the Groundwater Flow Direction and Gradient The elevation of the monitoring wells are measured within 0.01 foot of the local datum. The horizontal distances are measured to the nearest 0.1 foot. The groundwater elevation for each monitoring well is calculated by subtracting the depth to water from the wellhead elevation. The groundwater elevation information is used to construct a potentiometric surface map, which is used to evaluate the direction of groundwater flow and the magnitude of the groundwater gradient. SHELLSIFLDMTHDS.doc 1