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Stockton Cineplex Site Bound by East Miner Avenue, North Hunter Street, East Weber Avenue and North El Dorado Street Stockton, California Work plan for Preliminary Risk Assessment and Contaminant Mitigation Prepared For Civic Partners 1.0 PROJECT IDENTIFICATION The Stockton Cineplex project is located in down town Stockton, California in an area bounded to north by East Miner Avenue, to the south by East Weber Avenue, to the east by North Hunter Street, and to the west by North El Dorado Street (Figure 1). The site has historically been used for light industry and is currently undergoing redevelopment Recent uses for the site have been primarily administrative and commercial (Figure 2). Electricity is supplied to the project site by Pacific Gas and Electric (P, G, &E). Potable water is provided by the California Water Service, which obtains imported surface water from the Hogan Reservoir located northeast of Stockton, and from the Melones Reservoir located southeast of Stockton. The City of Stockton Sewer Service provides sanitary sewer service. The proposed Preliminary Risk Assessment has the goal of establishing criteria for the evaluation of potential contaminants that may be encountered during the construction of the Stockton Cineplex. The proposed Preliminary Risk Assessment would be used as a base line to evaluate possible contamination and determine the need for and type of mitigation required for contamination of a similar composition, distribution, and magnitude. Conceptually, if contamination is encountered during construction activities and determined to be of similar character to the modeled releases, corrective actions could be rapidly implemented as required by the Preliminary Risk Assessment. This study will provide a level of assurance to San Joaquin County Public Health Service - Environmental Health Division that all possible threats to health and the environment have been addressed and the appropriate mitigation measures will be implemented. This study will also provide an assurance to the responsible parties that all possible uncertainty about the magnitude and type of corrective action necessary, if contamination is encountered has been removed. The use of the Preliminary Risk Assessment also allows for the fast tracking of the definition and clean up of possible contamination ensuring the project is completed in a timely manner. The type and magnitude of corrective action required to abate a release is directly controlled by the site specific conditions and the nature and toxicity of the contaminant. The site geology, soil and groundwater chemistry, and hydrogeology will be integrated into a conceptual site model of the site conditions at Stockton Cineplex. The specific