SITE INFORMATION AND CORRESPONDENCE

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• • September 25, 2002. The purpose of the RI Plan was to identify activities that will be performed to determine the nature and extent of potential VOC impacts to soil and groundwater. The RI site activities will be completed in a phased approach commencing the week of November 4, 2002. It is expected that all fieldwork activities will be complete by March 31, 2002, subject to weather conditions and agency permit approvals. Upon completion of field activities, TRC will prepare a RI report to summarize the findings from the field investigation. This will include findings regarding the nature and extent of soil and groundwater impacts, and geologic and hydrogeologic conditions. The need for any additional investigations will also be presented in the RI report. The RI investigation will be performed in the following phases: • Sample six existing groundwater monitoring wells • Complete soil vapor survey Complete sewer video survey • Complete up to 11 soil borings Install up to 4 monitoring wells Collect and analyze soil vapor, soil and groundwater samples Report findings from RI COMMUNITY INVOLVEMENT The TRC RI report, along with investigation reports, fact sheets, and background materials for ongoing investigations in the nearby area, are available at the Lodi Public Library for review by the community. GLOSSARY OF TERMS Groundwater: Underground water that fills pores between particles of soil, sand, and gravel or openings in rocks to the point of saturation. Remedial Investigation (RI): A process in which the nature and extent of soil and groundwater impacts is evaluated to help guide the selection of viable remedial alternatives. Soil Vapor: Vapor, present in void spaces in soil between the groundwater and the surface of the ground, which may contain chemicals. Volatile Organic Compounds (VOCs): An organic compound (carbon containing) that evaporates (volatilizes) at room temperature. 2