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significantly different lithological units encountered while boring will be submitted for geotechnical analyses. Samples will be sent using chain-of-custody record to a State-certified laboratory for analysis of TPHg and BTEX by EPA methods 8015/8020, respectively; and MTBE by EPA method 8020. If MTBE is detected in any sample, confirmation by EPA method 8260 will be conducted. Selected soil samples will be analyzed for the following geotechnical analyses: falling head permeability, percent moisture, porosity, dry bulk density, soil pH, percent organic content and carbon to nitrogen to phosphorus (C:N:P) ratios. Following sample collection, each boring will be grouted to the ground surface with neat cement using tremie pipe. Any remaining drill cuttings will be placed in 5-gallon buckets and stored on-site pending laboratory results. A summary report will be prepared for submittal to PHS/EHD. The report will summarize field and laboratory procedures, contain all analytical data, and include recommendations for additional investigation, if necessary. In addition, a survey of all the wells within a half-mile of the site (including construction details)will be conducted, and the results presented in the report. Also, a general health risk assessment which may reveal any receptors to be potentially impacted during assessment or remediation activities will be completed and presented in the report. The general risk assessment will include potential preferential contaminant migration pathways (underground utility trenches), potential recharge areas (canals, surface water collection basins) and similar parameters. The report will be submitted in draft form to the client for review and comment. Soil and Groundwater Disposal To properly handle the soil and groundwater stored in drums on-site one of the following tasks will be completed: • Soil and Groundwater Disposal: This task includes the scheduling of the disposal of the petroleum hydrocarbon contaminated soil (4 drums) and groundwater (7 drums) generated during previous drilling and quarterly groundwater monitoring activities. In addition, this task includes mobilizing to the site, collecting samples from the soil drums, laboratory analysis, supervising the removal of the soil and groundwater from the site, and signing appropriate manifests. • Soil Treatment and Groundwater Disposal: This task includes the construction of a soil aeration cell, soil aeration activities, and disposal of the 7 drums of groundwater. The soil cell will be constructed on 6-mil visquene plastic. Soil from 4 drums will be placed in the cell, and the soil will be turned to promote aeration of the TPHg and BTEX in the soil. A confirmation sample will be collected from the treated soil to confirm the reduction of TPHg and BTEX to concentrations below maximum contaminant levels. The groundwater will be disposed of as described in the previous task. 95113\L.ETrERS\L.adden.&c 2 • SMTH